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Sample records for purple glove syndrome

  1. Purple Urine Bag Syndrome

    PubMed Central

    Al Montasir, Ahmed; Al Mustaque, Ahmed

    2013-01-01

    Purple urine bag syndrome (PUBS) is rare disease entity, occurs predominantly in constipated women, chronically catheterized and associated with bacterial urinary infections that produce sulphatase/phosphatase. The etiology is due to indigo (blue) and indirubin (red) or to their mixture that becomes purple. We present a case report of this rare phenomenon occurring in an 86-year-old woman. PMID:24479059

  2. Purple urine bag syndrome.

    PubMed

    Al Montasir, Ahmed; Al Mustaque, Ahmed

    2013-01-01

    Purple urine bag syndrome (PUBS) is rare disease entity, occurs predominantly in constipated women, chronically catheterized and associated with bacterial urinary infections that produce sulphatase/phosphatase. The etiology is due to indigo (blue) and indirubin (red) or to their mixture that becomes purple. We present a case report of this rare phenomenon occurring in an 86-year-old woman.

  3. Purple Urine Bag Syndrome

    PubMed Central

    Abubacker, Naufal Rizwan Taraganar; Jayaraman, Senthil Manikandan Thirumanilayur; Sivanesan, Magesh Kumar; Mathew, Renu

    2015-01-01

    Purple urine bag syndrome (PUBS) is a rare disorder seen in elderly persons, wherein the urinary bag and the tubing turn in to purple colour. It is usually seen in patients who are on urinary catheters for a long time. Purple coloured urine occurs due to the accumulation of indigo and indirubin, which are the end products of tryptophan metabolism due to the action of sulfatases and phosphatases formed by bacteria like Providencia, Citrobacter, Enterobacter, Klebsiella etc. We present this interesting phenomenon of purple urine in a young male who was on prolonged urinary catheterization. The urine culture was positive for Providencia and constipation was an added risk factor for the purple urine. The urinary catheter and tubing was changed along with a course of antibiotics which lead to the normalization of the urine colour. PMID:26435987

  4. [Purple urine bag syndrome].

    PubMed

    Fain-Ghironi, Nathalie; Le Gonidec, Patricia; Schaeffer, Mathilde

    2003-06-14

    The report of purple discoloration in a urinary drainage system, known as Purple Urine Bag Syndrome (P.U.B.S.) is rarely described in the literature. In an 85 year-old woman, with permanent indwelling urinary catheter, the appearance of purple coloration in the urine collecting bag, without change in the colour of the urine, was observed four times in one year. During these different episodes, a Gram negative lower urinary infection diagnoses. The germs identified were Providencia stuartii and Citrobacter koseri. Symptoms resolved completely after treatment with ceftriaxone. The clinical and biological symptoms usually described in cases of P.U.B.S. are observed in the medical history of this elderly woman: indwelling catheter with delay before onset of coloration greater than 15 days following catheterization, alkaline urinary pH, Gram negative lower urinary tract infection. However, during one of the episodes of PUBS in our patient, Citrobacter koseri was identified, germ not mentioned, as far as we know, in the literature. Moreover, in the published cases, Proteus species was identified as potentially associated with P.U.B.S., but a Proteus mirabilis urinary infection with was diagnosed in our patient, without any purple coloration of the urine in the collection bag.

  5. Case report: purple urine bag syndrome.

    PubMed

    Ribeiro, Joaquim Palmeiro; Marcelino, Paulo; Marum, Susan; Fernandes, Ana Paula; Grilo, Ana

    2004-06-01

    Purple urine bag syndrome (PUBS) was first reported in 1978. PUBS is rare, occurs predominantly in constipated women, chronically catheterized and associated with some bacterial urinary infections that produce sulphatase/phosphatase. The etiology is due to indigo (blue) and indirubin (red) or to their mixture that becomes purple. A chain reaction begins in the gastrointestinal tract with tryptophan as described in the article.

  6. An update on purple urine bag syndrome.

    PubMed

    Hadano, Yoshiro; Shimizu, Taro; Takada, Shimon; Inoue, Toshiya; Sorano, Sumire

    2012-01-01

    Purple urine bag syndrome is characterized by the urinary drainage bag turning purple in patients on prolonged urinary catheterization, especially those in the bedridden state. It is associated with bacterial urinary tract infections caused by indigo-producing and indirubin-producing bacteria, usually affects women, and is associated with alkaline urine, constipation, and a high bacterial load in the urine. Almost all patients with purple urine bag syndrome are catheterized due to significant disability, and the urinary pH is 7.0 or more. In general, intensive treatment with antibiotics is not recommended. Purple urine bag syndrome per se almost always appears to be asymptomatic and harmless. However, caution is needed, because some cases have been reported to show progression to severe disease states, so further research into the morbidity and mortality of this infection is warranted.

  7. Case report: Purple urine bag syndrome

    PubMed Central

    Ribeiro, Joaquim Palmeiro; Marcelino, Paulo; Marum, Susan; Fernandes, Ana Paula; Grilo, Ana

    2004-01-01

    Purple urine bag syndrome (PUBS) was first reported in 1978. PUBS is rare, occurs predominantly in constipated women, chronically catheterized and associated with some bacterial urinary infections that produce sulphatase/phosphatase. The etiology is due to indigo (blue) and indirubin (red) or to their mixture that becomes purple. A chain reaction begins in the gastrointestinal tract with tryptophan as described in the article. PMID:15153241

  8. Purple Urine Bag Syndrome- An Alarming Situation

    PubMed Central

    Faridi, M S; Mibang, Naloh; Shantajit, N; Somarendra, Khumukchum

    2016-01-01

    Purple urine bag syndrome (PUBS) is an uncommon condition that occurs mainly in chronically catheterized patient and associated with urinary tract infection. It is characterised by purple discolouration of urine bag which leads to significant stress and anxiety to patient, care takers and health workers, so awareness regarding this condition is of utmost importance. In our report, an old gentleman with Benign Prostate Hyperplasia (BPH) on per urethral catheter (PUC) with past history of recurrent urinary tract infection developed burning micturition of urine with purple discoloration of urine bag. After proper antibiotic and catheter changed, discoloration subsided. In India, as life expectancy and geriatric care is improving, more patients are on PUC for various diseases. So, the incidence of PUBS will increase and awareness is required about the condition and its management. PMID:27042522

  9. An association of purple urine bag syndrome with intussusception.

    PubMed

    Pillai, Rekha Neelakanta; Clavijo, Jorge; Narayanan, Manjith; Zaman, Kashif

    2007-10-01

    We report a case of an elderly lady with a long-term suprapubic catheter who developed purple discoloration of urine around the same time as she developed intussusception. Purple urine bag syndrome is a benign condition known to be associated with intestinal stasis. However, this association with intussusception should be kept in mind before the patient is reassured.

  10. Purple urine bag syndrome in an elderly patient from Colombia.

    PubMed

    Mondragón-Cardona, Alvaro; Jiménez-Canizales, Carlos Eduardo; Alzate-Carvajal, Verónica; Bastidas-Rivera, Fabricio; Sepúlveda-Arias, Juan Carlos

    2015-07-30

    A 71-year-old woman in a nursing home, with indwelling urinary catheter, bedridden, presented with a purple urine collector bag. The purple urine bag syndrome is a rare condition associated with the metabolism of tryptophan by overgrowth of intestinal bacteria. The purple color is formed by a combination of indigo and indirubin produced as a result of phosphatase and sulfatase enzymatic activity of bacteria on indoxyl sulfate, under alkaline pH of the urine. We present the second case of this syndrome reported in Colombia detailing the management of this rare syndrome associated with urinary tract infection. Several conditions should be considered in the differential diagnose of diseases that cause discoloration of the urine.

  11. Purple urine bag syndrome in a hemodialysis patient.

    PubMed

    Wang, I-Kuan; Ho, Dong-Ru; Chang, Hung-Yu; Lin, Chun-Liang; Chuang, Feng-Rong

    2005-08-01

    Purple urine bag syndrome (PUBS) is an uncommon disorder, in which the plastic disposable urinary catheter bag turns purple or blue following hours or days of urinary catheterization. The purple discoloration results from indirubin dissolved in the plastic mixing with indigo in the urine. Bacteria possessing indoxyl sulfatase degrade indoxyl sulfate into indirubin and indigo. Indoxyl sulfate is derived from the metabolism of tryptophan. PUBS usually occurs in chronic catheterized elderly women who are constipated and poorly ambulant. The clinical course is benign and rarely causes sepsis. This investigation reports a 61-year-old female diabetic patient with end-stage renal disease on maintenance hemodialysis, who had two episodes of blue or purple urine bag discoloration. The urine culture of the first episode yielded Klebsiella pneumoniae, whereas that of the second episode yielded Escherichia coli, Enterococcus faecalis, and Proteus vulgaris. Both episodes resolved following oral antibiotics treatment and placement of new foley catheters. To our knowledge, this is the first recorded case of PUBS in a dialysis patient.

  12. A unilateral purple urine bag syndrome in a patient with bilateral nephrostomy tubes.

    PubMed

    Karim, Adil; Abed, Firas; Bachuwa, Ghassan

    2015-12-23

    A change in the colour of urine is always of clinical significance, and a source of concern for the patient and his physician. Among the different urine colours observed, purple is the least common. Although purple discolouration of a catheter and a urine bag is an uncommon finding, it was reported in the literature as early as 1978, by Barlow and Dickson. We present a unique case of purple urine bag syndrome in a patient with bilateral nephrostomy tubes (NT) and associated urine bags (UB) with only the left nephrostomy tube and urine bag exhibiting the purple colour, which resolved with a course of appropriate antibiotics eradicating the causative bacterial pathogen, and change of NT and UB.

  13. Effect of ceramic-impregnated "thermoflow" gloves on patients with Raynaud's syndrome: randomized, placebo-controlled study.

    PubMed

    Ko, Gordon D; Berbrayer, David

    2002-08-01

    To determine the efficacy of ceramic impregnated gloves in the treatment of Raynaud's syndrome. Double-blind, placebo-controlled study. Teaching hospital outpatient clinic. Ninety-three patients meeting the "Pal" criteria for Raynaud's syndrome. Treatment period of three months with use of ceramic-impregnated gloves. Primary end points: Pain visual analogue scale ratings and diary; Disabilities of the Arm, Shoulder, Hand questionnaire; Jamar grip strength; Purdue board test of hand dexterity. Secondary end points: Infrared skin temperature measurements; seven-point Likert scale rating of treatment. In 60 participants with complete data, improvements were noted in the visual analogue scale rating (p=0.001), DASH score (p=0.001), Jamar grip strength (p=0.002), infrared skin fingertip temperature (p=0.003), Purdue hand dexterity test (p=0.0001) and the Likert scale (p=0.001) with ceramic gloves over the placebo cotton gloves. The ceramic-impregnated "thermoflow" gloves have a clinically important effect in Raynaud's syndrome.

  14. Monolateral purple urine bag syndrome in a patient with bilateral nephrostomy tubes.

    PubMed

    Sheehan, Michael

    2014-01-01

    Purple urine bag syndrome (PUBS) is a constellation of findings resulting in purple discoloration of the urine and/or urine drainage bag(s) occurring in patients with long-term urinary indwelling catheters. Other causative factors may include constipation, female gender, the presence of bacteria containing sulphatase and phosphatase enzymes, and alkaline urine. While the contributing factors for PUBS are linked with high morbidity, PUBS itself is a benign condition. A case study of monolateral PUBS in a patient with bilateral nephrostomy tubes (NTs) is presented.

  15. Anti-vibration gloves?

    PubMed

    Hewitt, Sue; Dong, Ren G; Welcome, Daniel E; McDowell, Thomas W

    2015-03-01

    For exposure to hand-transmitted vibration (HTV), personal protective equipment is sold in the form of anti-vibration (AV) gloves, but it remains unclear how much these gloves actually reduce vibration exposure or prevent the development of hand-arm vibration syndrome in the workplace. This commentary describes some of the issues that surround the classification of AV gloves, the assessment of their effectiveness and their applicability in the workplace. The available information shows that AV gloves are unreliable as devices for controlling HTV exposures. Other means of vibration control, such as using alternative production techniques, low-vibration machinery, routine preventative maintenance regimes, and controlling exposure durations are far more likely to deliver effective vibration reductions and should be implemented. Furthermore, AV gloves may introduce some adverse effects such as increasing grip force and reducing manual dexterity. Therefore, one should balance the benefits of AV gloves and their potential adverse effects if their use is considered.

  16. Purple urine bag syndrome in nursing homes: Ten elderly case reports and a literature review

    PubMed Central

    Lin, Chi-Hung; Huang, Hsien-Te; Chien, Chia-Chang; Tzeng, Dong-Sheng; Lung, For-Wey

    2008-01-01

    Purple urine bag syndrome (PUBS) is a rare occurrence, in which the patient has a purple-colored urine bag following urinary catheterization for hours to days. Most of authors believe it is a mixture of indigo (blue) and indirubin (red) that becomes purple. Previous study showed that PUBS occurred predominantly in chronically catheterized, constipated women. We collected 10 elderly patients with PUBS in two nursing homes. The first two cases were identified by chart review in 1987 and 2003, and then later eight cases (42.1%) were collected among 19 urinary catheterized elderly in the period between January 2007 and June 2007. In the present report, PUBS probably can occur in any patients with the right elements, namely urinary tract infection (UTI) with bacteria possessing these enzymes, diet with enough tryptophan, and being catheterized. Associations with bed-bound state, Alzheimer’s, or dementia from other causes are reflections of the state of such patients who are at higher risk for UTI, and hence PUBS occurred. Although we presented PUBS as a harmless problem, prevention and control of the nosocomial catheter-associated UTIs (CAUTIs) has become very important in the new patient-centered medical era. Thus, we should decrease the duration of catheterization, improve catheter care, and deploy technological advances designed for prevention, especially in the elderly cared for in nursing homes. PMID:19281065

  17. Purple urine bag syndrome in nursing homes: ten elderly case reports and a literature review.

    PubMed

    Lin, Chi-Hung; Huang, Hsien-Te; Chien, Chia-Chang; Tzeng, Dong-Sheng; Lung, For-Wey

    2008-01-01

    Purple urine bag syndrome (PUBS) is a rare occurrence, in which the patient has a purple-colored urine bag following urinary catheterization for hours to days. Most of authors believe it is a mixture of indigo (blue) and indirubin (red) that becomes purple. Previous study showed that PUBS occurred predominantly in chronically catheterized, constipated women. We collected 10 elderly patients with PUBS in two nursing homes. The first two cases were identified by chart review in 1987 and 2003, and then later eight cases (42.1%) were collected among 19 urinary catheterized elderly in the period between January 2007 and June 2007. In the present report, PUBS probably can occur in any patients with the right elements, namely urinary tract infection (UTI) with bacteria possessing these enzymes, diet with enough tryptophan, and being catheterized. Associations with bed-bound state, Alzheimer's, or dementia from other causes are reflections of the state of such patients who are at higher risk for UTI, and hence PUBS occurred. Although we presented PUBS as a harmless problem, prevention and control of the nosocomial catheter-associated UTIs (CAUTIs) has become very important in the new patient-centered medical era. Thus, we should decrease the duration of catheterization, improve catheter care, and deploy technological advances designed for prevention, especially in the elderly cared for in nursing homes.

  18. Glove 101

    NASA Technical Reports Server (NTRS)

    Ross, Amy

    2008-01-01

    This presentation addressed the question "What is a spacesuit glove?" - a highly specialized mobility system. It is an excellent basic tutorial on the design considerations of a spacesuit glove and the many facets of developing a glove that provides good mobility and thermal protection.

  19. Wearing gloves in the hospital

    MedlinePlus

    Infection control - wearing gloves; Patient safety - wearing gloves; Personal protective equipment - wearing gloves; PPE - wearing gloves; Nosocomial infection - wearing gloves; Hospital acquired infection - wearing gloves

  20. A Case of Purple Urine Bag Syndrome in a Spastic Partial Quadriplegic Male

    PubMed Central

    Khan, Salman; Dave, Atman; Morrison, Amelia Jane A; Jain, Swapna; Hermanns, David

    2016-01-01

    Purple bag urine syndrome (PUBS) is a benign and unique phenomenon of the urine turning a deep violet color within the urinary catheter tubing and bag. This phenomenon is commonly encountered in patients indicated with long-term catheter placement or, in certain conditions like chronic constipation, alkaline urine, limited ambulation, and, in terms of gender distribution, the female sex, predominates. PUBS gets its name from a unique phenomenon that takes places inside the gut where tryptophan (an amino acid) is metabolized, producing blue and red hues which together emanate a deep violet color. Here, the case of a middle-aged male patient with a suprapubic catheter in situ, following trauma causing spastic partial quadriplegia, is being presented with PUBS due to UTI secondary to Proteus vulgaris. The risk factors, in this case, include chronic constipation and recurrent urinary tract infections (UTIs).​ PMID:27182466

  1. GLOVE BOX ATTACHMENT

    DOEpatents

    Butts, H.L.

    1962-02-13

    This invention comprises a housing unit to be fitted between a glove box port and a glove so that a slidable plate within the housing seals off the glove box port for evacuation of the glove box without damage to the glove. The housing and the glove may be evacuated without damage to the glove since movement of the glove is restricted during evacuation by the slidable plate. (AEC)

  2. Enzymatic degradation of urinary indoxyl sulfate by Providencia stuartii and Klebsiella pneumoniae causes the purple urine bag syndrome.

    PubMed Central

    Dealler, S F; Hawkey, P M; Millar, M R

    1988-01-01

    The etiology of the purple urine bag syndrome (PUBS), in which the urinary catheter bag of some elderly patients develops intense purple coloration, was studied. The purple was found to be a mixture of indirubin dissolved in the plastic and indigo on its surface. Six patients with PUBS were studied, and Providencia stuartii was isolated from the urine of five and Klebsiella pneumoniae was isolated from the urine of one. These strains produced indigo in 7.9 mM indoxyl sulfate-containing agar. One hundred and fifty isolates of 41 species of bacteria were tested for their ability to produce indigo on agar containing indoxyl sulfate, but only 17 of 27 strains of P. stuartii, a single strain of Klebsiella pneumoniae, and Enterobacter agglomerans were positive. All of the indigo-producing bacteria had an indoxyl phosphatase with a pI of 6.4. This enzyme also possessed indoxyl sulfatase activity and was not present in strains that were unable to produce indigo from indoxyl sulfate. We conclude that PUBS results from the decomposition of urinary indoxyl sulfate to indigo and indirubin by bacteria (notably P. stuartii). As elderly catheterized patients often have high urinary indoxyl sulfate levels and colonization of their urinary tract with P. stuartii, the condition is most commonly seen in them. Images PMID:2846640

  3. Improved Gloves for Firefighters

    NASA Technical Reports Server (NTRS)

    Tschirch, R. P.; Sidman, K. R.; Arons, I. J.

    1983-01-01

    New firefighter's gloves are more flexible and comfortable than previous designs. Since some firefighters prefer gloves made of composite materials while others prefer dip-coated gloves, both types were developed. New gloves also find uses in foundries, steelmills, and other plants where they are substituted for asbestos gloves.

  4. Improved Gloves for Firefighters

    NASA Technical Reports Server (NTRS)

    Tschirch, R. P.; Sidman, K. R.; Arons, I. J.

    1983-01-01

    New firefighter's gloves are more flexible and comfortable than previous designs. Since some firefighters prefer gloves made of composite materials while others prefer dip-coated gloves, both types were developed. New gloves also find uses in foundries, steelmills, and other plants where they are substituted for asbestos gloves.

  5. Comprehension Strategy Gloves.

    ERIC Educational Resources Information Center

    Newman, Gayle

    2002-01-01

    Describes the idea of creating a glove for each of the comprehension strategies for use with different text structures. Notes that the gloves serve as a multisensory approach by providing visual clues through icons on each finger and the palm. Discusses three different gloves: the prereading glove, the narrative text structure glove, and the…

  6. Purple urine bag syndrome: Case report from a nursing home resident with a false alarm of urosepsis.

    PubMed

    Mohamed Faisal, A H; Shathiskumar, G; Nurul Izah, A

    2015-08-01

    Purple urine bag syndrome (PUBS), as the name implies produces purplish discoloration of the urine. It is commonly observed among elderly women with constipation, and individuals with long term catheter in the setting of urinary tract infection (UTI). From the literature research, there were no publications on PUBS in Malaysia; however we believe that it is underreported. We present a unique case of this rare condition occurring in a 68-year-old man, a nursing home resident on long term urinary catheter. The urine cleared after hydration, antibiotic therapy and replacement of the catheter.

  7. Pityriasis Rosea, Gianotti-Crosti Syndrome, Asymmetric Periflexural Exanthem, Papular-Purpuric Gloves and Socks Syndrome, Eruptive Pseudoangiomatosis, and Eruptive Hypomelanosis: Do Their Epidemiological Data Substantiate Infectious Etiologies?

    PubMed Central

    Zawar, Vijay; Sciallis, Gabriel F.; Kempf, Werner; Lee, Albert

    2016-01-01

    Many clinical and laboratory-based studies have been reported for skin rashes which may be due to viral infections, namely pityriasis rosea (PR), Gianotti-Crosti syndrome (GCS), asymmetric periflexural exanthem/unilateral laterothoracic exanthem (APE/ULE), papular-purpuric gloves and socks syndrome (PPGSS), and eruptive pseudo-angiomatosis (EP). Eruptive hypomelanosis (EH) is a newly discovered paraviral rash. Novel tools are now available to investigate the epidemiology of these rashes. To retrieve epidemiological data of these exanthema and analyze whether such substantiates or refutes infectious etiologies. We searched for articles published over the last 60 years and indexed by PubMed database. We then analyzed them for universality, demography, concurrent patients, temporal and spatial-temporal clustering, mini-epidemics, epidemics, and other clinical and geographical associations. Based on our criteria, we selected 55, 60, 29, 36, 20, and 4 articles for PR, GCS, APE/ULE, PPGSS, EP, and EH respectively. Universality or multiple-continental reports are found for all exanthema except EH. The ages of patients are compatible with infectious causes for PR, GCS, APE/ULE, and EH. Concurrent patients are reported for all. Significant patient clustering is demonstrated for PR and GCS. Mini-epidemics and epidemics have been reported for GCS, EP, and EH. The current epidemiological data supports, to a moderate extent, that PR, GCS, and APE could be caused by infectious agents. Support for PPGSS is marginal. Epidemiological evidences for infectious origins for EP and EH are inadequate. There might be growing epidemiological evidence to substantiate or to refute our findings in the future. PMID:27103975

  8. Power assist EVA glove development

    NASA Technical Reports Server (NTRS)

    Main, John A.; Peterson, Steven W.; Strauss, Alvin M.

    1992-01-01

    The design of the EVA glove is examined, emphasizing the development of a more flexible metacarpophalangeal (MCP) joint for the EVA glove. The analysis of the EVA glove MCP joint is reviewed and the glove design process is recapitulated. Experimental tests of the glove are summarized.

  9. EV space suit gloves (passive)

    NASA Technical Reports Server (NTRS)

    Fletcher, E. G.; Dodson, J. D.; Elkins, W.; Tickner, E. G.

    1975-01-01

    A pair of pressure and thermal insulating overgloves to be used with an Extravehicular (EV) suit assembly was designed, developed, fabricated, and tested. The design features extensive use of Nomex felt materials in lieu of the multiple layer insulation formerly used with the Apollo thermal glove. The glove theoretically satisfies all of the thermal requirements. The presence of the thermal glove does not degrade pressure glove tactility by more than the acceptable 10% value. On the other hand, the thermal glove generally degrades pressure glove mobility by more than the acceptable 10% value, primarily in the area of the fingers. Life cycling tests were completed with minimal problems. The thermal glove/pressure glove ensemble was also tested for comfort; the test subjects found no problems with the thermal glove although they did report difficulties with pressure points on the pressure glove which were independent of the thermal glove.

  10. Whole glove permeation of cyclohexanol through disposable nitrile gloves on a dextrous robot hand and comparison with the modified closed-loop ASTM F739 method 1. No fist clenching.

    PubMed

    Mathews, Airek R; Que Hee, Shane S

    2017-04-01

    The aim was to develop a whole glove permeation method for cyclohexanol to generate permeation parameter data for a non-moving dextrous robot hand (normalized breakthrough time tb, standardized breakthrough time ts, steady state permeation rate Ps, and diffusion coefficient D). Four types of disposable powderless, unsupported, and unlined nitrile gloves from the same producer were investigated: Safeskin Blue and Kimtech Science Blue, Purple, and Sterling. The whole glove method developed involved a peristaltic pump for water circulation through chemically resistant Viton tubing to continually wash the inner surface of the test glove via holes in the tubing, a dextrous robot hand operated by a microprocessor, a chemically protective nitrile glove to protect the robot hand, an incubator to maintain 35°C temperature, and a hot plate to maintain 35°C at the sampling point of the circulating water. Aliquots of 1.0 mL were sampled at regular time intervals for the first 60 min followed by removal of 0.5 mL aliquots every hour to 8 hr. Quantification was by the internal standard method after gas chromatography-selective ion electron impact mass spectrometry using a non-polar capillary column. The individual glove values of tb and ts differed for the ASTM closed loop method except for Safeskin Blue, but did not for the whole glove method. Most of the kinetic parameters agreed within an order of magnitude for the two techniques. The order of most protective to least protective glove was Blue and Safeskin, then Purple followed by Sterling for the whole gloves. The analogous order for the modified F739 ASTM closed loop method was: Safeskin, Blue, Purple, and Sterling, almost the same as for the whole glove. The Sterling glove was "not recommended" from the modified ASTM data, and was "poor" from the whole glove data.

  11. Glove box shield

    DOEpatents

    Brackenbush, Larry W.; Hoenes, Glenn R.

    1981-01-01

    According to the present invention, a shield for a glove box housing radioactive material is comprised of spaced apart clamping members which maintain three overlapping flaps in place therebetween. There is a central flap and two side flaps, the side flaps overlapping at the interior edges thereof and the central flap extending past the intersection of the side flaps in order to insure that the shield is always closed when the user withdraws his hand from the glove box. Lead loaded neoprene rubber is the preferred material for the three flaps, the extent of lead loading depending upon the radiation levels within the glove box.

  12. Glove box shield

    DOEpatents

    Brackenbush, L.W.; Hoenes, G.R.

    A shield for a glove box housing radioactive material is comprised of spaced apart clamping members which maintain three overlapping flaps in place therebetween. There is a central flap and two side flaps, the side flaps overlapping at the interior edges thereof and the central flap extending past the intersection of the side flaps in order to insure that the shield is always closed when the user wthdraws his hand from the glove box. Lead loaded neoprene rubber is the preferred material for the three flaps, the extent of lead loading depending upon the radiation levels within the glove box.

  13. Glove box shield

    SciTech Connect

    Brackenbush, L.W.; Hoenes, G.R.

    1981-02-17

    According to the present invention, a shield for a glove box housing radioactive material is comprised of spaced apart clamping members which maintain three overlapping flaps in place therebetween. There is a central flap and two side flaps, the side flaps overlapping at the interior edges thereof and the central flap extending past the intersection of the side flaps in order to insure that the shield is always closed when the user withdraws his hand from the glove box. Lead loaded neoprene rubber is the preferred material for the three flaps, the extent of lead loading depending upon the radiation levels within the glove box. 2 figs.

  14. The effects of vibration-reducing gloves on finger vibration

    PubMed Central

    Welcome, Daniel E.; Dong, Ren G.; Xu, Xueyan S.; Warren, Christopher; McDowell, Thomas W.

    2015-01-01

    Vibration-reducing (VR) gloves have been used to reduce the hand-transmitted vibration exposures from machines and powered hand tools but their effectiveness remains unclear, especially for finger protection. The objectives of this study are to determine whether VR gloves can attenuate the vibration transmitted to the fingers and to enhance the understanding of the mechanisms of how these gloves work. Seven adult male subjects participated in the experiment. The fixed factors evaluated include hand force (four levels), glove condition (gel-filled, air bladder, no gloves), and location of the finger vibration measurement. A 3-D laser vibrometer was used to measure the vibrations on the fingers with and without wearing a glove on a 3-D hand-arm vibration test system. This study finds that the effect of VR gloves on the finger vibration depends on not only the gloves but also their influence on the distribution of the finger contact stiffness and the grip effort. As a result, the gloves increase the vibration in the fingertip area but marginally reduce the vibration in the proximal area at some frequencies below 100 Hz. On average, the gloves reduce the vibration of the entire fingers by less than 3% at frequencies below 80 Hz but increase at frequencies from 80 to 400 Hz. At higher frequencies, the gel-filled glove is more effective at reducing the finger vibration than the air bladder-filled glove. The implications of these findings are discussed. Relevance to industry Prolonged, intensive exposure to hand-transmitted vibration can cause hand-arm vibration syndrome. Vibration-reducing gloves have been used as an alternative approach to reduce the vibration exposure. However, their effectiveness for reducing finger-transmitted vibrations remains unclear. This study enhanced the understanding of the glove effects on finger vibration and provided useful information on the effectiveness of typical VR gloves at reducing the vibration transmitted to the fingers. The new

  15. GLOVEBOX GLOVE CHARACTERIZATION SUMMARY

    SciTech Connect

    Korinko, P.

    2012-05-14

    A task was undertaken to determine primarily the permeation behavior of various glove compounds from four manufacturers. As part of the basic characterization task, the opportunity to obtain additional mechanical and thermal properties presented itself. Consequently, a total of fifteen gloves were characterized for permeation, Thermogravimetric Analysis, Puncture Resistance, Tensile Properties and Dynamic Mechanical Analysis. Detailed reports were written for each characterization technique used. This report contains the summary of the results.

  16. Cooling Glove Study

    DTIC Science & Technology

    2007-03-01

    10 12. Melcor Model HT6-12T-4 thermoelectric cooler... Input Digital PC Relay Vacuum Pump Vent Solenoid Valve Common Vac Calorimeter 12V 12V 5V 118.3 KΩ Glove Glove Pressure Sensor in out J-2729 Thermistor... Melcor . This device can operate with a hot-side temperature as high as 150C, though devices that can operate at up to 225C are available from Melcor

  17. [The gloves of love].

    PubMed

    Mikić, Zelimir

    2010-01-01

    Thin rubber gloves were used for the first time in the history of medicine at the end of 1889. On the occasion of the 120th anniversary of that event at the end of 2009, the great importance of that discovery for the development of surgery in general should be emphasized once again. The surgical gloves were invented and introduced by a famous American surgeon Dr. William Halsted from Johs Hopkins Hospital in Baltimore (USA). DR. WILLIAM HALSTED AND MISS CAROLINE HAMPTON: This significant innovation actually occured thanks to the romance between Dr. W. Halsted and his scrub nurse Miss Caroline Hampton, later his wife, Mrs C. Halsted. According to the antiseptic practice of that hospital the hands of the operating personnel had to be desinfected in mercuric chloride which damaged the skin of nurse Caroline who developed a bad case of dermatitis, and because of that she considered abandoning the hospital. This prompted Dr. Halsted to contract Goodyear Rubber Company to produce thin rubber gloves to protect Caroline's hands and to keep her in his vicinity. They proved to be very satisfactory and soon Dr. Halsted's assistants too began to wear sterilized rubber gloves routinely. Although it was not until later that the importance of rubber gloves in preventing infection was realized these "gloves of love" soon entered into general surgical practice and proved to be of the greatest importance for the development of asepsis and aseptic surgical work.

  18. 6. VIEW OF INTERIOR GLOVE BOX DURING CONSTRUCTION. GLOVE BOXES ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    6. VIEW OF INTERIOR GLOVE BOX DURING CONSTRUCTION. GLOVE BOXES CONTAINED ALL PRODUCTION OPERATIONS AND WERE INTERCONNECTED BY CONVEYORS. (9/21/59) - Rocky Flats Plant, Plutonium Fabrication, Central section of Plant, Golden, Jefferson County, CO

  19. Can the design of glove dispensing boxes influence glove contamination?

    PubMed

    Assadian, O; Leaper, D J; Kramer, A; Ousey, K J

    2016-11-01

    Few studies have explored the microbial contamination of glove boxes in clinical settings. The objective of this observational study was to investigate whether a new glove packaging system in which single gloves are dispensed vertically, cuff end first, has lower levels of contamination on the gloves and on the surface around the box aperture compared with conventional glove boxes. Seven participating sites were provided with vertical glove dispensing systems (modified boxes) and conventional boxes. Before opening glove boxes, the surface around the aperture was sampled microbiologically to establish baseline levels of superficial contamination. Once the glove boxes were opened, the first pair of gloves in each box was sampled for viable bacteria. Thereafter, testing sites were visited on a weekly basis over a period of six weeks and the same microbiological assessments were made. The surface near the aperture of the modified boxes became significantly less contaminated over time compared with the conventional boxes (P<0.001), with an average of 46.7% less contamination around the aperture. Overall, gloves from modified boxes showed significantly less colony-forming unit contamination than gloves from conventional boxes (P<0.001). Comparing all sites over the entire six-week period, gloves from modified boxes had 88.9% less bacterial contamination. This simple improvement to glove box design reduces contamination of unused gloves. Such modifications could decrease the risk of microbial cross-transmission in settings that use gloves. However, such advantages do not substitute for strict hand hygiene compliance and appropriate use of non-sterile, single-use gloves. Copyright © 2016 The Healthcare Infection Society. All rights reserved.

  20. System and method for changing a glove attached to a glove box

    DOEpatents

    Aluisi, Alan

    2001-01-01

    A system for changing the gloves of a glove box. The system requires the use of a new glove and a glove change ring to form a temporary secondary barrier to the exchange of atmospheres between the inner glove box and the room in which the glove box is operated. The system describes specific means for disengaging a used glove from the glove box port. The means for disengaging the used glove include use of a glove change hook and use of a glove with an attached tab for use in removal. A method for changing the gloves of a glove box is also described.

  1. PHYSX Glove Test

    NASA Technical Reports Server (NTRS)

    1995-01-01

    A mock-up of the stainless-steel Pegasus Hypersonic Experiment (PHYSX) Projects experimental 'glove' undergoes hot-loads tests at NASA's Dryden Flight Research Center, Edwards, California. The thermal ground test simulates heats and pressures the wing glove will experience at hypersonic speeds. Quartz heat lamps subject this model of a Pegasus booster rocket's right wing glove to the extreme heats it will experience at speeds approaching Mach 8. The glove has a highly reflective surface, underneath which are hundreds of temperature and pressure sensors that will send hypersonic flight data to ground tracking facilities during the experimental flight. Pegasus is an air-launched space booster produced by Orbital Sciences Corporation and Hercules Aerospace Company (initially; later, Alliant Tech Systems) to provide small satellite users with a cost-effective, flexible, and reliable method for placing payloads into low earth orbit. Pegasus has been used to launch a number of satellites and the PHYSX experiment. That experiment consisted of a smooth glove installed on the first-stage delta wing of the Pegasus. The glove was used to gather data at speeds of up to Mach 8 and at altitudes approaching 200,000 feet. The flight took place on October 22, 1998. The PHYSX experiment focused on determining where boundary-layer transition occurs on the glove and on identifying the flow mechanism causing transition over the glove. Data from this flight-research effort included temperature, heat transfer, pressure measurements, airflow, and trajectory reconstruction. Hypersonic flight-research programs are an approach to validate design methods for hypersonic vehicles (those that fly more than five times the speed of sound, or Mach 5). Dryden Flight Research Center, Edwards, California, provided overall management of the glove experiment, glove design, and buildup. Dryden also was responsible for conducting the flight tests. Langley Research Center, Hampton, Virginia, was

  2. Permeation of limonene through disposable nitrile gloves using a dextrous robot hand.

    PubMed

    Banaee, Sean; S Que Hee, Shane

    2017-03-28

    The purpose of this study was to investigate the permeation of the low-volatile solvent limonene through different disposable, unlined, unsupported, nitrile exam whole gloves (blue, purple, sterling, and lavender, from Kimberly-Clark). This study utilized a moving and static dextrous robot hand as part of a novel dynamic permeation system that allowed sampling at specific times. Quantitation of limonene in samples was based on capillary gas chromatography-mass spectrometry and the internal standard method (4-bromophenol). The average post-permeation thicknesses (before reconditioning) for all gloves for both the moving and static hand were more than 10% of the pre-permeation ones (P≤0.05), although this was not so on reconditioning. The standardized breakthrough times and steady-state permeation periods were similar for the blue, purple, and sterling gloves. Both methods had similar sensitivity. The lavender glove showed a higher permeation rate (0.490±0.031 μg/cm(2)/min) for the moving robotic hand compared to the non-moving hand (P≤0.05), this being ascribed to a thickness threshold. Permeation parameters for the static and dynamic robot hand models indicate that both methods have similar sensitivity in detecting the analyte during permeation and the blue, purple, and sterling gloves behave similarly during the permeation process whether moving or non-moving.

  3. Permeation of limonene through disposable nitrile gloves using a dextrous robot hand

    PubMed Central

    Banaee, Sean; S Que Hee, Shane

    2017-01-01

    Objectives: The purpose of this study was to investigate the permeation of the low-volatile solvent limonene through different disposable, unlined, unsupported, nitrile exam whole gloves (blue, purple, sterling, and lavender, from Kimberly-Clark). Methods: This study utilized a moving and static dextrous robot hand as part of a novel dynamic permeation system that allowed sampling at specific times. Quantitation of limonene in samples was based on capillary gas chromatography-mass spectrometry and the internal standard method (4-bromophenol). Results: The average post-permeation thicknesses (before reconditioning) for all gloves for both the moving and static hand were more than 10% of the pre-permeation ones (P≤0.05), although this was not so on reconditioning. The standardized breakthrough times and steady-state permeation periods were similar for the blue, purple, and sterling gloves. Both methods had similar sensitivity. The lavender glove showed a higher permeation rate (0.490±0.031 μg/cm2/min) for the moving robotic hand compared to the non-moving hand (P≤0.05), this being ascribed to a thickness threshold. Conclusions: Permeation parameters for the static and dynamic robot hand models indicate that both methods have similar sensitivity in detecting the analyte during permeation and the blue, purple, and sterling gloves behave similarly during the permeation process whether moving or non-moving. PMID:28111415

  4. EVA Glove Research Team

    NASA Technical Reports Server (NTRS)

    Strauss, Alvin M.; Peterson, Steven W.; Main, John A.; Dickenson, Rueben D.; Shields, Bobby L.; Lorenz, Christine H.

    1992-01-01

    The goal of the basic research portion of the extravehicular activity (EVA) glove research program is to gain a greater understanding of the kinematics of the hand, the characteristics of the pressurized EVA glove, and the interaction of the two. Examination of the literature showed that there existed no acceptable, non-invasive method of obtaining accurate biomechanical data on the hand. For this reason a project was initiated to develop magnetic resonance imaging as a tool for biomechanical data acquisition and visualization. Literature reviews also revealed a lack of practical modeling methods for fabric structures, so a basic science research program was also initiated in this area.

  5. Glovebox plug for glove changing

    DOEpatents

    Carlson, David O.; Shalkowski, Jr., Edward

    1992-01-01

    A plug for use in plugging a glove opening of a glovebox when the glove is eplaced. An inflated inner tube which is retained between flat plates mounted on a threaded rod is compressed in order to expand its diameter to equal that of the inside of the glove opening.

  6. [The advent of surgical gloves].

    PubMed

    Germain, M A

    2003-09-01

    The advent of surgical gloves had a double evolution. Evolution of the material: cecum of a sheep, cotton, silk, leather, rubber. Originally introduced to protect theatre staff's hands from corrosive solutions, subsequent use was to protect the patient from contamination by theatre staff. Many surgeons contributed to the evolution of the surgical gloves. The use of gloves was truly part of an evolutionary process than a discovery. The turning of surgical gloves is now incontestable, and their use more and more important. Surgical gloves must secure a crossing protections between surgeon and patient.

  7. Power assist EVA glove development

    NASA Technical Reports Server (NTRS)

    Main, John A.; Peterson, Steven W.; Strauss, Alvin M.

    1992-01-01

    Structural modeling of the EVA glove indicates that flexibility in the metacarpophalangeal (MCP) joint can be improved by selectively lowering the elasticity of the glove fabric. Two strategies are used to accomplish this. One method uses coil springs on the back of the glove to carry the tension in the glove skin due to pressurization. These springs carry the loads normally borne by the glove fabric, but are more easily deformed. An active system was also designed for the same purpose and uses gas filled bladders attached to the back of the EVA glove that change the dimensions of the back of the glove and allow the glove to bend at the MCP joint, thus providing greater flexibility at this joint. A threshold control scheme was devised to control the action of the joint actuators. Input to the controller was provided by thin resistive pressure sensors placed between the hand and the pressurized glove. The pressure sensors consist of a layer of polyester film that has a thin layer of ink screened on the surface. The resistivity of the ink is pressure dependent, so an extremely thin pressure sensor can be fabricated by covering the ink patch with another layer of polyester film and measuring the changing resistance of the ink with a bridge circuit. In order to sense the force between the hand and the glove at the MCP joint, a sensor was placed on the palmar face of the middle finger. The resultant signal was used by the controller to decide whether to fill or exhaust the bladder actuators on the back of the glove. The information from the sensor can also be used to evaluate the effectiveness of a given control scheme or glove design since the magnitude of the measured pressures gives some idea of the torque required to bend a glove finger at the MCP joint. Tests of this actuator, sensor, and control system were conducted in an 57.2 kPa glove box by performing a series of 90 degree finger bends with a glove without an MCP joint assembly, a glove with the coil spring

  8. Microgravity Science Glovebox - Glove

    NASA Technical Reports Server (NTRS)

    1997-01-01

    This photo shows a rubber glove and its attachment ring for the Microgravity Science Glovebox (MSG) being developed by the European Space Agency (ESA) and NASA for use aboard the International Space Station (ISS). Scientists will use the MSG to carry out multidisciplinary studies in combustion science, fluid physics and materials science. The MSG is managed by NASA's Marshall Space Flight Center (MSFC). Photo Credit: NASA/MSFC

  9. Gloves, extra gloves or special types of gloves for preventing percutaneous exposure injuries in healthcare personnel.

    PubMed

    Mischke, Christina; Verbeek, Jos H; Saarto, Annika; Lavoie, Marie-Claude; Pahwa, Manisha; Ijaz, Sharea

    2014-03-07

    Healthcare workers are at risk of acquiring viral diseases such as hepatitis B, hepatitis C and HIV through exposure to contaminated blood and body fluids at work. Most often infection occurs when a healthcare worker inadvertently punctures the skin of their hand with a sharp implement that has been used in the treatment of an infected patient, thus bringing the patient's blood into contact with their own. Such occurrences are commonly known as percutaneous exposure incidents. To determine the benefits and harms of extra gloves for preventing percutaneous exposure incidents among healthcare workers versus no intervention or alternative interventions. We searched CENTRAL, MEDLINE, EMBASE, NHSEED, Science Citation Index Expanded, CINAHL, NIOSHTIC, CISDOC, PsycINFO and LILACS until 26 June 2013. Randomised controlled trials (RCTs) with healthcare workers as the majority of participants, extra gloves or special types of gloves as the intervention, and exposure to blood or bodily fluids as the outcome. Two authors independently assessed study eligibility and risk of bias, and extracted data. We performed meta-analyses for seven different comparisons. We found 34 RCTs that included 6890 person-operations as participating units and reported on 46 intervention-control group comparisons. We grouped interventions as follows: increased layers of standard gloves, gloves manufactured with special protective materials or thicker gloves, and gloves with puncture indicator systems. Indicator gloves show a coloured spot when they are perforated. Participants were surgeons in all studies and they used at least one pair of standard gloves as the control intervention. Twenty-seven studies also included other surgical staff (e.g. nurses). All but one study used perforations in gloves as an indication of exposure. The median control group rate was 18.5 perforations per 100 person-operations. Seven studies reported blood stains on the skin and two studies reported self reported

  10. [Surgical glove use in France].

    PubMed

    Caillot, J L

    2005-01-01

    Since the end of the 19th century, surgeons have used gloves to prevent infectious complications to the patient. The AIDS epidemic of the 1980's sparked the use of universal precautions to protect the surgeon from infection and vice-versa. The interface between surgeon and patient is in effect a two-way street. Surgical techniques must be modified and barrier protection optimized to minimize these risks. A single layer glove is a fragile barrier to blood exposure; unrecognized glove perforations may lead to unrecognized and prolonged exposure. Double gloving, though far from being a widespread practice in France, seems to be the best protection from pathogen exposure. Glove powder and latex allergies have their own inherent risks to both surgeon and patient in the form of latex allergies and adhesive peritonitis. New institutional protocols will be necesssary in order to make powder-free non-latex gloves available to French surgeons.

  11. Gianotti-Crosti syndrome, pityriasis rosea, asymmetrical periflexural exanthem, unilateral mediothoracic exanthem, eruptive pseudoangiomatosis, and papular-purpuric gloves and socks syndrome: a brief review and arguments for diagnostic criteria

    PubMed Central

    Chuh, Antonio; Zawar, Vijay; Law, Michelle; Sciallis, Gabriel

    2012-01-01

    Several exanthems including Gianotti-Crosti syndrome, pityriasis rosea, asymmetrical periflexural exanthem, eruptive pseudoangiomatosis, and papular-purpuric gloves and socks syndrome are suspected to be caused by viruses. These viruses are potentially dangerous. Gianotti-Crosti syndrome is related to hepatitis B virus infection which is the commonest cause of hepatocellular carcinoma, and Epstein-Barr virus infection which is related to nasopharyngeal carcinoma. Pityriasis rosea has been suspected to be related to human herpesvirus 7 and 8 infections, with the significance of the former still largely unknown, and the latter being a known cause of Kaposi's sarcoma. Papular-purpuric gloves and socks syndrome is significantly associated with human B19 erythrovirus infection which can lead to aplastic anemia in individuals with congenital hemoglobinopathies, and when transmitted to pregnant women, can cause spontaneous abortions and congenital anomalies. With viral DNA sequence detection technologies, false positive results are common. We can no longer apply Koch's postulates to establish cause-effect relationships. Biological properties of some viruses including lifelong latent infection, asymptomatic shedding, and endogenous reactivation render virological results on various body tissues difficult to interpret. We might not be able to confirm or refute viral causes for these rashes in the near future. Owing to the relatively small number of patients, virological and epidemiology studies, and treatment trials usually recruit few study and control subjects. This leads to low statistical powers and thus results have little clinical significance. Moreover, studies with few patients are less likely to be accepted by mainstream dermatology journals, leading to publication bias. Aggregation of data by meta-analyses on many studies each with a small number of patients can theoretically elevate the power of the results. Techniques are also in place to compensate for

  12. Small, Lightweight, Collapsible Glove Box

    NASA Technical Reports Server (NTRS)

    James, Jerry

    2009-01-01

    A small, lightweight, collapsible glove box enables its user to perform small experiments and other tasks. Originally intended for use aboard a space shuttle or the International Space Station (ISS), this glove box could also be attractive for use on Earth in settings in which work space or storage space is severely limited and, possibly, in which it is desirable to minimize weight. The development of this glove box was prompted by the findings that in the original space-shuttle or ISS setting, (1) it was necessary to perform small experiments in a large general-purpose work station, so that, in effect, they occupied excessive space; and it took excessive amounts of time to set up small experiments. The design of the glove box reflects the need to minimize the space occupied by experiments and the time needed to set up experiments, plus the requirement to limit the launch weight of the box and the space needed to store the box during transport into orbit. To prepare the glove box for use, the astronaut or other user has merely to insert hands through the two fabric glove ports in the side walls of the box and move two hinges to a locking vertical position (see figure). The user could do this while seated with the glove box on the user fs lap. When stowed, the glove box is flat and has approximately the thickness of two pieces of 8-in. (.20 cm) polycarbonate.

  13. Gloved Human-Machine Interface

    NASA Technical Reports Server (NTRS)

    Adams, Richard (Inventor); Olowin, Aaron (Inventor); Hannaford, Blake (Inventor)

    2015-01-01

    Certain exemplary embodiments can provide a system, machine, device, manufacture, circuit, composition of matter, and/or user interface adapted for and/or resulting from, and/or a method and/or machine-readable medium comprising machine-implementable instructions for, activities that can comprise and/or relate to: tracking movement of a gloved hand of a human; interpreting a gloved finger movement of the human; and/or in response to interpreting the gloved finger movement, providing feedback to the human.

  14. Phase VI Glove Durability Testing

    NASA Technical Reports Server (NTRS)

    Mitchell, Kathryn

    2011-01-01

    The current state-of-the-art space suit gloves, the Phase VI gloves, have an operational life of 25 -- 8 hour Extravehicular Activities (EVAs) in a dust free, manufactured microgravity EVA environment. Future planetary outpost missions create the need for space suit gloves which can endure up to 90 -- 8 hour traditional EVAs or 576 -- 45 minute suit port-based EVAs in a dirty, uncontrolled planetary environment. Prior to developing improved space suit gloves for use in planetary environments, it is necessary to understand how the current state-of-the-art performs in these environments. The Phase VI glove operational life has traditionally been certified through cycle testing consisting of International Space Station (ISS)-based EVA tasks in a clean environment, and glove durability while performing planetary EVA tasks in a dirty environment has not previously been characterized. Testing was performed in the spring of 2010 by the NASA Johnson Space Center (JSC) Crew and Thermal Systems Division (CTSD) to characterize the durability of the Phase VI Glove and identify areas of the glove design which need improvement to meet the requirements of future NASA missions. Lunar simulant was used in this test to help replicate the dirty lunar environment, and generic planetary surface EVA tasks were performed during testing. A total of 50 manned, pressurized test sessions were completed in the Extravehicular Mobility Unit (EMU) using one pair of Phase VI gloves as the test article. The 50 test sessions were designed to mimic the total amount of pressurized cycling the gloves would experience over a 6 month planetary outpost mission. The gloves were inspected periodically throughout testing, to assess their condition at various stages in the test and to monitor the gloves for failures. Additionally, motion capture and force data were collected during 18 of the 50 test sessions to assess the accuracy of the cycle model predictions used in testing and to feed into the

  15. Phase VI Glove Durability Testing

    NASA Technical Reports Server (NTRS)

    Mitchell, Kathryn C.

    2010-01-01

    The current state-of-the-art space suit gloves, the Phase VI gloves, have an operational life of 25 - 8 hour Extravehicular Activities (EVAs) in a clean, controlled ISS environment. Future planetary outpost missions create the need for space suit gloves which can endure up to 90 - 8 hour traditional EVAs or 576 - 45 minute suit port-based EVAs in a dirty, uncontrolled planetary environment. Prior to developing improved space suit gloves for use in planetary environments, it is necessary to understand how the current state-of-the-art performs in these environments. The Phase VI glove operational life has traditionally been certified through cycle testing consisting of ISS-based tasks in a clean environment, and glove durability while performing planetary EVA tasks in a dirty environment has not previously been characterized. Testing was performed in the spring of 2010 by the NASA Johnson Space Center Crew and Thermal Systems Division to characterize the durability of the Phase VI Glove and identify areas of the glove design which need improvement to meet the requirements of future NASA missions. Lunar simulant was used in this test to help replicate the dirty lunar environment, and generic planetary surface EVA tasks were performed during testing. A total of 50 manned, pressurized test sessions were completed in the Extravehicular Mobility Unit (EMU) using one pair of Phase VI gloves as the test article. The 50 test sessions were designed to mimic the total amount of pressurized cycling the gloves would experience over a 6 month planetary outpost mission. The gloves were inspected at periodic intervals throughout testing, to assess their condition at various stages in the test and to monitor the gloves for failures. Additionally, motion capture and force data were collected during 18 of the 50 test sessions to assess the accuracy of the cycle model predictions used in testing and to feed into the development of improved cycle model tables. This paper provides a

  16. Glutaraldehyde permeation: choosing the proper glove.

    PubMed

    Jordan, S L; Stowers, M F; Trawick, E G; Theis, A B

    1996-04-01

    Six different gloves were tested with five different aqueous glutaraldehyde formulations to determine each glove's resistance to permeation. When tested against 2% or 3.4% glutaraldehyde solutions, nitrile rubber, butyl rubber, a synthetic surgical glove, and polyethylene were each impermeable for at least 4 hours. The two latex gloves tested showed glutaraldehyde breakthrough at 45 minutes. When the latex gloves were doubled, the time to first breakthrough increased to 3 to 4 hours. With 50% glutaraldehyde, only butyl rubber and nitrile rubber were impermeable for extended periods. The surgical synthetic glove had breakthrough at 1 hour, whereas polyethylene and the two latex gloves had breakthrough in less than 1 hour.

  17. Interchangeable breech lock for glove boxes

    SciTech Connect

    Lemonds, David Preston

    2015-11-24

    A breech lock for a glove box is provided that may be used to transfer one or more items into the glove box. The breech lock can be interchangeably installed in place of a plug, glove, or other device in a port or opening of a glove box. Features are provided to aid the removal of items from the breech lock by a gloved operator. The breech lock can be reused or, if needed, can be replaced with a plug, glove, or other device at the port or opening of the glove box.

  18. Purple urine bags.

    PubMed

    Dealler, S F; Belfield, P W; Bedford, M; Whitley, A J; Mulley, G P

    1989-09-01

    Purple urine drainage bags were found in 7 of 71 chronically catheterized elderly women. The purple staining of the bags is due to a violet discoloration (indirubin) of the plastic of the catheter bag and fine blue crystals of indigo in the urine. The colors are formed from the substrate indoxyl sulfate (indican) and all 7 patients had bacteria in the urine that would produce blue colonies on agar enriched with the urine (filter sterilized) of the patients involved. Organisms identified were Providencia or Klebsiella species. Indican excretion was higher in patients with purple urinary catheter bags than in controls.

  19. Barrier breach of surgical gloves.

    PubMed

    Beck, W C

    1994-01-01

    The barrier properties of natural rubber latex gloves have been of clinical interest since the concept of using an integrity monitor was introduced by me over 30 years ago. Although surgeons expect their gloves to serve as an effective barrier during use, products can and do fail. Failure is often unrecognized, resulting in the wearer's exposure to potential pathogens and the patient to microorganisms shed by surgical team members. Although a variety of solutions have been suggested (double gloving, cut-resistant gloves), these remedies do not alert the surgeon to a breach of barrier, the cost and consequences of which are astronomical to the health system. As a result, some form of breach detection device is now recommended to minimize the likelihood of exposure, infection, and/or allergy.

  20. Trimethoprim-Sulfamethoxazole–Induced Rhabdomyolysis; Gabapentin-Induced Hypoglycemia in Diabetic and Nondiabetic Patients; Purple Glove Syndrome After Oral Phenytoin Administration; Acute Dystonic Reaction After Methylphenidate Initiation; Serotonin Syndrome with Vilazodone Monotherapy; Cabozantinib-Associated Dermatologic Adverse Reactions

    PubMed Central

    Mancano, Michael A.

    2015-01-01

    The purpose of this feature is to heighten awareness of specific adverse drug reactions (ADRs), discuss methods of prevention, and promote reporting of ADRs to the US Food and Drug Administration’s (FDA’s) MedWatch program (800-FDA-1088). If you have reported an interesting, preventable ADR to MedWatch, please consider sharing the account with our readers. Write to Dr. Mancano at ISMP, 200 Lakeside Drive, Suite 200, Horsham, PA 19044 (phone: 215-707-4936; e-mail: mmancano@temple.edu). Your report will be published anonymously unless otherwise requested. This feature is provided by the Institute for Safe Medication Practices (ISMP) in cooperation with the FDA’s MedWatch program and Temple University School of Pharmacy. ISMP is an FDA MedWatch partner. PMID:26715798

  1. Purple loosestrife volunteers

    USGS Publications Warehouse

    Middleton, Beth A.

    2004-01-01

    Purple loosestrife (Lythrum salicaria) is a perennial plant native to Eurasia where it grows along streams, rivers, and wet seepage areas (fig. 1). Seeds were inadvertently brought to North American territories in the ballast water of ships. Purple loosestrife was also intentionally planted throughout North America for its ornamental flowers but has since escaped cultivation to spread to wetlands.Some purple loosestrife plants release millions of seeds during the summer season, and these seeds readily disperse to new wetlands via water, animals, and even on people’s shoes. In addition, both its roots and stem fragments can sprout and begin new plants.When purple loosestrife invades a wetland, the species sometimes becomes more dominant than the original native wetland species, such as cattails and sedges. While many people think that purple loosestrife reduces the value of wetlands for wildlife, these claims are disputed. Most people agree, however, that purple loosestrife grows more prolifically in North America than elsewhere, probably because the species has left its native enemies behind in Eurasia and Australia. Although we do not understand how well the species grows in various climates, there is some thought that purple loosetrife may never fully invade the southern United States. Studies looking at the species’ response to temperature and analyses of its growth patterns across latitudes can help us determine its future threat to uninvaded portions of the United States. This is where volunteers come in.Volunteers in North America, Eurasia, and Australia are helping assess purple loosestrife growth in their regions (fig. 2). The program is part of Dr. Beth Middleton’s project to compare the role of purple loosestrife in its native and invasive habitats. Anyone can participate, and volunteers currently include high school and college students, retirees, professionals from all disciplines, agency personnel, and university faculty. Volunteers collect data

  2. Nitrile versus Latex for Glove Juice Sampling.

    PubMed

    Landers, Timothy F; Dent, Anthony

    2014-01-01

    The objective of this study was to explore the utility of nitrile gloves as a replacement for latex surgical gloves in recovering bacteria from the hands. Two types of nitrile gloves were compared to latex gloves using the parallel streak method. Streaks of Klebsiella pneumoniae and Staphylococcus aureus were made on tryptic soy agar plates, and the zones of inhibition were measured around pieces of glove material placed on the plates. Latex gloves produced a mean zone of inhibition of 0.28 mm, compared to 0.002 mm for nitrile gloves (p<.001). While the parallel streak method is not intended as a quantitative estimate of antimicrobial properties, these results suggest that nitrile may be a viable alternative to latex in glove juice sampling methods, since nitrile avoids the risk of latex exposure.

  3. Evaluation of a Hybrid Elastic EVA Glove

    NASA Technical Reports Server (NTRS)

    Korona, F. Adam; Akin, David

    2002-01-01

    The hybrid elastic design is based upon an American Society for Engineering Education (ASEE) glove designed by at the Space Systems Laboratory (SSL) in 1985. This design uses an elastic restraint layer instead of convolute joints to achieve greater dexterity and mobility during EVA (extravehicular activity). Two pilot studies and a main study were conducted using the hybrid elastic glove and 4000-series EMU (extravehicular activity unit) glove. Data on dexterity performance, joint range of motion, grip strength and perceived exertion was assessed for the EMU and hybrid elastic gloves with correlations to a barehanded condition. During this study, 30 test subjects performed multiple test sessions using a hybrid elastic glove and a 4000- series shuttle glove in a 4.3psid pressure environment. Test results to date indicate that the hybrid elastic glove performance is approximately similar to the performance of the 4000-series glove.

  4. ISS Update: Robonaut Glove Test (Part 2)

    NASA Image and Video Library

    NASA Public Affairs Officer Brandi Dean interviews Chris Ihrke, General Motors Lead Engineer for the Robo-Glove Project, about the Robonaut glove test. Questions? Ask us on Twitter @NASA_Johnson an...

  5. Evaluation of a Hybrid Elastic EVA Glove

    NASA Technical Reports Server (NTRS)

    Korona, F. Adam; Akin, David

    2002-01-01

    The hybrid elastic design is based upon an American Society for Engineering Education (ASEE) glove designed by at the Space Systems Laboratory (SSL) in 1985. This design uses an elastic restraint layer instead of convolute joints to achieve greater dexterity and mobility during EVA (extravehicular activity). Two pilot studies and a main study were conducted using the hybrid elastic glove and 4000-series EMU (extravehicular activity unit) glove. Data on dexterity performance, joint range of motion, grip strength and perceived exertion was assessed for the EMU and hybrid elastic gloves with correlations to a barehanded condition. During this study, 30 test subjects performed multiple test sessions using a hybrid elastic glove and a 4000- series shuttle glove in a 4.3psid pressure environment. Test results to date indicate that the hybrid elastic glove performance is approximately similar to the performance of the 4000-series glove.

  6. Nitrile versus Latex for Glove Juice Sampling

    PubMed Central

    Landers, Timothy F.; Dent, Anthony

    2014-01-01

    The objective of this study was to explore the utility of nitrile gloves as a replacement for latex surgical gloves in recovering bacteria from the hands. Two types of nitrile gloves were compared to latex gloves using the parallel streak method. Streaks of Klebsiella pneumoniae and Staphylococcus aureus were made on tryptic soy agar plates, and the zones of inhibition were measured around pieces of glove material placed on the plates. Latex gloves produced a mean zone of inhibition of 0.28 mm, compared to 0.002 mm for nitrile gloves (p<.001). While the parallel streak method is not intended as a quantitative estimate of antimicrobial properties, these results suggest that nitrile may be a viable alternative to latex in glove juice sampling methods, since nitrile avoids the risk of latex exposure. PMID:25333880

  7. A prototype power assist EVA glove

    NASA Technical Reports Server (NTRS)

    Main, John A.; Peterson, Steven W.; Strauss, Alvin M.

    1991-01-01

    The most recent generation of space suit EVA gloves has addressed the problem of loose fit and stiffness in the fingers, but it remains difficult to build a glove assembly with low metacarpophalangeal joint stiffness. Fatigue due to constantly displacing the glove from a neutral position has been reported as the limiting factor in some EVA activities. This paper outlines an actuation system that uses gas filled bladders attached to the back of the EVA glove to provide the necessary force to bend the glove at the metacarpal joint, thus providing greater endurance during finger grasping tasks. A simple on-off controller senses hand movement through small pressure sensors between the finger and the glove restraint. The controller then fills or exhausts the bladders on the back of the glove to effectively move the neutral position of the glove as the hand inside moves.

  8. DEVELOPMENT OF A NEW GLOVE FOR GLOVE BOXES WITH HIGH-LEVEL PERFORMANCES

    SciTech Connect

    Blancher, J.; Poirier, J.M.

    2003-02-27

    This paper describes the results of a joint technological program of COGEMA and MAPA to develop a new generation of glove for glove boxes. The mechanical strength of this glove is twice as high as the best characteristics of gloves available on the market. This new generation of product has both a higher level of performance and better ergonomics.

  9. Surgical glove related contact dermatitis.

    PubMed

    Weesner, B W

    1991-01-01

    With increased emphasis on infection control in the dental office has come an increase in complaints of adverse reactions to surgical gloves. A review of the literature reveals latex allergy problems not to be confined to gloves, but to involve articles of clothing, rubber dam material, and other latex-containing products. Life-threatening cases have been reported. The dental profession may be faced with compromising reactive possibilities in patients who have been previously sensitized. There is a need for development of alternative protective products for the dental office.

  10. Glove box for water pit applications

    DOEpatents

    Mills, William C.; Rabe, Richard A.

    2005-01-18

    A glove box assembly that includes a glove box enclosure attached to a longitudinally extending hollow tube having an entranceway, wherein the portion of the tube is in a liquid environment. An elevator member is provided for raising an object that is introduced into the hollow tube from the liquid environment to a gas environment inside the glove box enclosure while maintaining total containment.

  11. Latex medical gloves: time for a reappraisal.

    PubMed

    Palosuo, Timo; Antoniadou, Irini; Gottrup, Finn; Phillips, Peter

    2011-01-01

    Many hospitals have implemented policies to restrict or ban the use of devices made of natural rubber latex (NRL) in healthcare as precautionary measures against the perceived risk of NRL allergy. Changes in glove technology, progress in measuring the specific allergenic potential of gloves and a dramatic decrease in the prevalence of NRL allergies after interventions and education prompted us to revisit the basis for justifiable glove selection policies. The published Anglophone literature from 1990 to 2010 was reviewed for original articles and reviews dealing with the barrier and performance properties of NRL and synthetic gloves and the role of glove powder. The review shows that NRL medical gloves, when compared with synthetic gloves, tend to be stronger, more flexible and better accepted by clinicians. The introduction of powder-free gloves has been associated with reductions in protein content and associated allergies. Recently, new methods to quantify clinically relevant NRL allergens have enabled the identification of gloves with low allergenic potential. The use of low-protein, low-allergenic, powder-free gloves is associated with a significant decrease in the prevalence of type I allergic reactions to NRL among healthcare workers. Given the excellent barrier properties and operating characteristics, dramatically reduced incidences of allergic reactions, availability of specific tests for selection of low-allergen gloves, competitive costs and low environmental impact, the use of NRL gloves within the hospital environment warrants reappraisal.

  12. Investigation of natural latex rubber gloves

    SciTech Connect

    Vessel, E.M.

    1993-03-19

    Seventy five percent of natural latex rubber gloves used in laboratories at the Savannah River Site are not reused. A cost analysis performed by the SRS Procurement Department determined that a net savings of $1,092,210 could be achieved annually by recycling latex rubber gloves. The Materials Technology Section, at the request of the Procurement Department, examined some mechanical and chemical properties of latex rubber gloves manufactured by Ansell Edmont, which had been purchased by the site specifications for protective clothing. It also examined mechanical properties of re-cycled gloves purchased by specifications and of {open_quotes}off the shelf{close_quotes} gloves manufactured by North Brothers Company. Finally, water vapor transmission studies, simulating tritium permeation, were performed on gloves from both manufacturers. These studies were performed to determine whether latex rubber gloves can be recycled or whether using only new, unwashed gloves is required in areas where tritium exposure is a possibility. The results of these studies indicate that the acceptable glove characteristics, required in the WSRC Manual 5Q1.11, Protective Clothing Specifications, are not adversely affected after washing and drying the gloves manufactured by Ansell Edmont for seven cycles. Results also indicate that natural latex rubber gloves manufactured by North Brothers comply with most of the acceptable glove characteristics specified in the WSRC Manual 5Q1.11. Statistical analysis of the water vapor permeation data show that there is no correlation between permeation rates and the manufacturer.

  13. Gloves Reprocessing: Does It Really Save Money?

    PubMed

    Arora, Pankaj; Kumari, Santosh; Sodhi, Jitender; Talati, Shweta; Gupta, Anil Kumar

    2015-12-01

    Gloves are reprocessed and reused in health-care facilities in resource-limited settings to reduce the cost of availability of gloves. The study was done with the aim to compute the cost of reprocessing of gloves so that an economically rationale decision can be taken. A retrospective record-based cross-sectional study was undertaken in a central sterile supply department where different steps during reprocessing of gloves were identified and the cost involved in reprocessing per pair of gloves was calculated. The cost of material and manpower was calculated to arrive at the cost of reprocessing per pair of gloves. The cost of a reprocessed pair of surgical gloves was calculated to be Indian Rupee (INR) 14.33 which was greater than the cost of a new pair of disposable surgical gloves (INR 9.90) as the cost of sterilization of one pair of gloves itself came out to  be INR 10.97. The current study showed that the purchase of sterile disposable single-use gloves is cheaper than the process of recycling. Reprocessing of gloves is not economical on tangible terms even in resource-limited settings, and from the perspective of better infection control as well as health-care worker safety, it further justifies the use of disposable gloves.

  14. Tool-specific performance of vibration-reducing gloves for attenuating palm-transmitted vibrations in three orthogonal directions

    PubMed Central

    Dong, Ren G.; Welcome, Daniel E.; Peterson, Donald R.; Xu, Xueyan S.; McDowell, Thomas W.; Warren, Christopher; Asaki, Takafumi; Kudernatsch, Simon; Brammer, Antony

    2015-01-01

    Vibration-reducing (VR) gloves have been increasingly used to help reduce vibration exposure, but it remains unclear how effective these gloves are. The purpose of this study was to estimate tool-specific performances of VR gloves for reducing the vibrations transmitted to the palm of the hand in three orthogonal directions (3-D) in an attempt to assess glove effectiveness and aid in the appropriate selection of these gloves. Four typical VR gloves were considered in this study, two of which can be classified as anti-vibration (AV) gloves according to the current AV glove test standard. The average transmissibility spectrum of each glove in each direction was synthesized based on spectra measured in this study and other spectra collected from reported studies. More than seventy vibration spectra of various tools or machines were considered in the estimations, which were also measured in this study or collected from reported studies. The glove performance assessments were based on the percent reduction of frequency-weighted acceleration as is required in the current standard for assessing the risk of vibration exposures. The estimated tool-specific vibration reductions of the gloves indicate that the VR gloves could slightly reduce (<5%) or marginally amplify (<10%) the vibrations generated from low-frequency (<25 Hz) tools or those vibrating primarily along the axis of the tool handle. With other tools, the VR gloves could reduce palm-transmitted vibrations in the range of 5%–58%, primarily depending on the specific tool and its vibration spectra in the three directions. The two AV gloves were not more effective than the other gloves with some of the tools considered in this study. The implications of the results are discussed. Relevance to industry Hand-transmitted vibration exposure may cause hand-arm vibration syndrome. Vibration-reducing gloves are considered as an alternative approach to reduce the vibration exposure. This study provides useful information

  15. Purple Pelisse: a specialty fingerling potato with purple skin and purple flesh

    USDA-ARS?s Scientific Manuscript database

    Purple Pelisse is a specialty fingerling potato with purple skin and dark purple flesh. It has medium maturity and sets a large number of smooth, small, fingerling-shaped tubers. The tubers have medium specific gravity and high levels of antioxidants. This potato variety is mainly intended for the f...

  16. Barrier isolator/glovebox glove dexterity study.

    PubMed

    Park, Young H; Pines, E; Cournoyer, M E

    2010-01-01

    In response to new, stricter safety requirements set out by the federal government, compounding pharmacists are investigating applications and processes appropriate for their facilities. One application, currently used by many industries, was developed by Los Alamos National Laboratories in the early days of defense work. A barrier isolator or "glovebox" is a containment device that allows work within a sealed space while providing protection for people and the environment. The operations at Plutonium Facility (TA-55) in Los Alamos National Laboratories involve various amounts of plutonium. Gloveboxes are used to handle plutonium, and glovebox gloves are the weakest part of this engineering control. Currently a lead-loaded glove made from Hypalon is used. The lead-loaded gloves are compared to unleaded gloves with respect to dexterity and its effect on the outcome of any task performance. Experiments have been conducted on two models of unleaded gloves (15-mil thick Hypalon gloves and 30-mil thick Hypalon gloves), as well as 30-mil thick lead-loaded gloves. The objective of this research is to study the effect of lead-loaded gloves versus unleaded gloves on task performance. We use inferential statistical analysis of this data to support scientific judgment of the probability that the observed difference between tested gloves is dependable or that any difference noted might have happened by chance.

  17. Get ready for ergo-centric gloves.

    PubMed

    DeBecker, Luc G

    2002-09-01

    All occupational safety professionals are dedicated to reducing injuries. Gloves play an essential role in this pursuit. With the diverse selection of gloves on the market, there is no longer any excuse to perform a hazardous task without the correct hand protection. The keys to success are identifying a glove style that will protect and at the same time be comfortable enough to wear, ensuring an adequate supply of gloves and providing employee training so every worker will know what the correct glove is for each task. Manufacturers are doing their part to provide new and innovative solutions. By involving workers in the glove selection process, employers can take a huge step in increasing glove use and consequently, in reducing hand injuries. It's well worth the time.

  18. FY13 High Performance EVA Glove (HPEG) Collaboration: Glove Injury Data Mining Effort - Training Data Overview

    NASA Technical Reports Server (NTRS)

    Reid, Christopher; Benson, Elizabeth; England, Scott; Charvat, Jacqueline; Norcross, Jason; McFarland, Shane; Rajulu, Sudhakar

    2014-01-01

    From the time hand-intensive tasks were first created for EVAs, discomforts and injuries have been noted.. There have been numerous versions of EVA gloves for US crew over the past 50 years, yet pain and injuries persist. The investigation team was tasked with assisting in a glove injury assessment for the High Performance EVA Glove (HPEG) project.center dot To aid in this assessment, the team was asked to complete the following objectives: - First, to develop the best current understanding of what glove-related injuries have occurred to date, and when possible, identify the specific mechanisms that caused those injuries - Second, to create a standardized method for comparison of glove injury potential from one glove to another. center dot The overall goal of the gloved hand injury assessment is to utilize ergonomics in understanding how these glove injuries are occurring, and to propose mitigations to current designs or design changes in the next generation of EVA gloves.

  19. Thermal and Mechanical Testing of Neoprene Gloves Used in a Space Shuttle Microgravity Glove Box Experiment

    NASA Technical Reports Server (NTRS)

    Wingard, Charles Doug; Munafo, Paul M. (Technical Monitor)

    2001-01-01

    Neoprene gloves are used in a Space Shuttle Microgravity Glove Box (MGBX) experiment. In 1999, significant corrosion was observed in the work area and on the outer surface of the left glove ring. Analysis of the corrosion products showed that they contained chlorine. The Neoprene gloves used in this glove box were obtained in 1995, with a recommended shelf life of 3 years. After storage of these gloves in a cabinet drawer until 1999, significant signs of corrosion were also observed in the drawer. Mechanical and thermal properties were determined on samples cut from the finger and sleeve areas of the "good" and "bad" gloves. This data showed significant aging of the left-hand glove, particularly in the sleeve area. Thermal analysis data by DSC and TGA was complimentary to tensile data in showing this aging. However, this test data did not pinpoint the cause of the left-hand glove aging, or of the corrosion products.

  20. High Performance EVA Glove Collaboration: Glove Injury Data Mining Effort

    NASA Technical Reports Server (NTRS)

    Reid, C. R.; Benson, E.; England, S.; Charvat, J.; Norcross, J. R.; McFarland, S. M.; Rajulu, S.

    2015-01-01

    Human hands play a significant role during Extravehicular Activity (EVA) missions and Neutral Buoyancy Lab (NBL) training events, as they are needed for translating and performing tasks in the weightless environment. Because of this high frequency usage, hand and arm related injuries are known to occur during EVA and EVA training in the NBL. The primary objectives of this investigation were to: 1) document all known EVA glove related injuries and circumstances of these incidents, 2) determine likely risk factors, and 3) recommend interventions where possible that could be implemented in the current and future glove designs. METHODS: The investigation focused on the discomforts and injuries of U.S. crewmembers who had worn the pressurized Extravehicular Mobility Unit (EMU) spacesuit and experienced 4000 Series or Phase VI glove related incidents during 1981 to 2010 for either EVA ground training or in-orbit flight. We conducted an observational retrospective case-control investigation using 1) a literature review of known injuries, 2) data mining of crew injury, glove sizing, and hand anthropometry databases, 3) descriptive statistical analyses, and finally 4) statistical risk correlation and predictor analyses to better understand injury prevalence and potential causation. Specific predictor statistical analyses included use of principal component analyses (PCA), multiple logistic regression, and survival analyses (Cox proportional hazards regression). Results of these analyses were computed risk variables in the forms of odds ratios (likelihood of an injury occurring given the magnitude of a risk variable) and hazard ratios (likelihood of time to injury occurrence). Due to the exploratory nature of this investigation, we selected predictor variables significant at p=0.15. RESULTS: Through 2010, there have been a total of 330 NASA crewmembers, from which 96 crewmembers performed 322 EVAs during 1981-2010, resulting in 50 crewmembers being injured inflight and 44

  1. Electrical conductivity as a test for the integrity of latex gloves

    SciTech Connect

    Stampfer, J.F.; Kissane, R.J.; Schauer, S.M.

    1993-02-01

    Surgical latex gloves have been used to protect patients against bacterial infections introduced by health-care workers. As a result of the Acquired Immune Deficiency Syndrome (AIDS) epidemic, the concern has shifted, with more emphasis on the protection of the health-care worker from the patient. These gloves often have defects, holes, which allow bacteria to penetrate. There are a number of methods to test the integrity of these gloves before they are donned. The present standard test is to fill the glove with 1000 ml of water and visually inspect the exterior for water leaks. Another method allows the gloves to be tested while being worn. This is done by measuring the electrical conductivity through the latex, from the hand to an external conductive solution. We have investigated the use of electrical conductivity to test sterile latex gloves, both with and without holes. We have studied various phenomena associated with this testing and conducted simultaneous electrical and viral penetration tests. Our conclusions are as follows. (1) Electrical conductivity test method for gloves while they are being worn is very dependent on the specific glove being tested, primarily on the conductivity of the intact glove. (2) In the best of cases, reliable results could be expected for only about one hour of wear and for holes larger than 10s of {mu}ms. (3) There are practical problems that may disqualify the electrical conductivity test for routine use. (4) The test may prove to be valuable as a QA test procedure for nonconductive materials and garments made from these materials because it has greater sensitivity than presently used methods. (5) The effective sizes of holes in latex increase much faster when the latex is stretched than would be predicted from the elongation of the latex.

  2. Electrical conductivity as a test for the integrity of latex gloves

    SciTech Connect

    Stampfer, J.F.; Kissane, R.J.; Schauer, S.M.

    1993-02-01

    Surgical latex gloves have been used to protect patients against bacterial infections introduced by health-care workers. As a result of the Acquired Immune Deficiency Syndrome (AIDS) epidemic, the concern has shifted, with more emphasis on the protection of the health-care worker from the patient. These gloves often have defects, holes, which allow bacteria to penetrate. There are a number of methods to test the integrity of these gloves before they are donned. The present standard test is to fill the glove with 1000 ml of water and visually inspect the exterior for water leaks. Another method allows the gloves to be tested while being worn. This is done by measuring the electrical conductivity through the latex, from the hand to an external conductive solution. We have investigated the use of electrical conductivity to test sterile latex gloves, both with and without holes. We have studied various phenomena associated with this testing and conducted simultaneous electrical and viral penetration tests. Our conclusions are as follows. (1) Electrical conductivity test method for gloves while they are being worn is very dependent on the specific glove being tested, primarily on the conductivity of the intact glove. (2) In the best of cases, reliable results could be expected for only about one hour of wear and for holes larger than 10s of [mu]ms. (3) There are practical problems that may disqualify the electrical conductivity test for routine use. (4) The test may prove to be valuable as a QA test procedure for nonconductive materials and garments made from these materials because it has greater sensitivity than presently used methods. (5) The effective sizes of holes in latex increase much faster when the latex is stretched than would be predicted from the elongation of the latex.

  3. CHARACTERIZATION OF TENSILE STRENGTH OF GLOVEBOX GLOVES

    SciTech Connect

    Korinko, P.; Chapman, G.

    2012-02-29

    A task was undertaken to compare various properties of different glovebox gloves, having various compositions, for use in gloveboxes at the Savannah River Site (SRS). One aspect of this project was to determine the tensile strength (TS) of the gloves. Longitudinal tensile samples were cut from 15 different gloves and tensile tested. The stress, load, and elongation at failure were determined. All of the gloves that are approved for glovebox use and listed in the glovebox procurement specification met the tensile and elongation requirements. The Viton{reg_sign} compound gloves are not listed in the specification, but exhibited lower tensile strengths than permissible based on the Butyl rubber requirements. Piercan Polyurethane gloves were the thinnest samples and exhibited the highest tensile strength of the materials tested.

  4. Contact urticaria due to polyethylene gloves.

    PubMed

    Sugiura, Keiji; Sugiura, Mariko; Shiraki, Rika; Hayakawa, Ritsuko; Shamoto, Mikihiro; Sasaki, Kazumi; Itoh, Akira

    2002-05-01

    We report a rare case of contact urticaria due to polyethylene gloves. The patient, a 46-year-old cook, had had had chronic urticaria since 1985, and first visited our hospital in June 2000. We began by prescribing antihistamine and antiallergenic drugs for him, but his condition did not improve. From a detailed interview, we established that when he put on polyethylene gloves at work, his condition worsened. We suspected some component of his gloves to be the cause of his symptoms. Prick and scratch tests with a solution extracted from his gloves showed a wheal-and-flare reaction at 15 min. We advised him to wear a cotton shirt under his clothes in daily life, and to put on cotton gloves under his polyethylene gloves while at work. Subsequently, the size and the number of wheals were markedly smaller and the subject's symptoms were reduced.

  5. THERMOGRAVIMETRIC CHARACTERIZATION OF GLOVEBOX GLOVES

    SciTech Connect

    Korinko, P.

    2012-02-29

    An experimental project was initiated to characterize mass loss when heating different polymer glovebox glove material samples to three elevated temperatures, 90, 120, and 150 C. Samples from ten different polymeric gloves that are being considered for use in the tritium gloveboxes were tested. The intent of the study was to determine the amount of material lost. These data will be used in a subsequent study to characterize the composition of the material lost. One goal of the study was to determine which glove composition would least affect the glovebox atmosphere stripper system. Samples lost most of the mass in the initial 60 minutes of thermal exposure and as expected increasing the temperature increased the mass loss and shortened the time to achieve a steady state loss. The most mass loss was experienced by Jung butyl-Hypalon{reg_sign} at 146 C with 12.9% mass loss followed by Piercan Hypalon{reg_sign} at 144 C with 11.4 % mass loss and Jung butyl-Viton{reg_sign} at 140 C with 5.2% mass loss. The least mass loss was experienced by the Jung Viton{reg_sign} and the Piercan polyurethane. Unlike the permeation testing (1) the vendor and fabrication route influences the amount of gaseous species that is evolved. Additional testing to characterize these products is recommended. Savannah River Site (SRS) has many gloveboxes deployed in the Tritium Facility. These gloveboxes are used to protect the workers and to ensure a suitable environment in which to handle tritium gas products. The gas atmosphere in the gloveboxes is purified using a stripper system. The process gas strippers collect molecules that may have hydrogen or its isotopes attached, e.g., waters of hydration, acids, etc. Recently, sulfur containing compounds were detected in the stripper system and the presence of these compounds accelerates the stripper system's aging process. This accelerated aging requires the strippers to be replaced more often which can impact the facility's schedule and

  6. EVA Glove Sensor Feasbility II Abstract

    NASA Technical Reports Server (NTRS)

    Melone, Kate

    2014-01-01

    The main objectives for the glove project include taking various measurements from human subjects during and after they perform different tasks in the glove box, acquiring data from these tests and determining the accuracy of these results, interpreting and analyzing this data, and using the data to better understand how hand injuries are caused during EVAs.1 Some of these measurements include force readings, temperature readings, and micro-circulatory blood flow.1 The three glove conditions tested were ungloved (a comfort glove was worn to house the sensors), Series 4000, and Phase VI. The general approach/procedure for the glove sensor feasibility project is as follows: 1. Prepare test subject for testing. This includes attaching numerous sensors (approximately 50) to the test subject, wiring, and weaving the sensors and wires in the glove which helps to keep everything together. This also includes recording baseline moisture data using the Vapometer and MoistSense. 2. Pressurizing the glove box. Once the glove box is pressurized to the desired pressure (4.3 psid), testing can begin. 3. Testing. The test subject will perform a series of tests, some of which include pinching a load cell, making a fist, pushing down on a force plate, and picking up metal pegs, rotating them 90 degrees, and placing them back in the peg board. 4. Post glove box testing data collection. After the data is collected from inside the glove box, the Vapometer and MoistSense device will be used to collect moisture data from the subject's hand. 5. Survey. At the conclusion of testing, he/she will complete a survey that asks questions pertaining to comfort/discomfort levels of the glove, glove sizing, as well as offering any additional feedback.

  7. Electrical-conductivity testing of latex gloves

    SciTech Connect

    Stampfer, J.F.; Salazar, J.A.; Trujillo, A.G.; Harris, T.; Berardinelli, S.P.

    1994-11-01

    There is an increasing awareness in the healthcare field that gloves worn for protection from hazards associated with body fluids do not always afford the protection desired. Gloves may have defects, such as holes, as they come from the manufacturer or distributor, or they may become defective during storage or use. While the numbers vary widely, failure rates for new gloves, defined as detectable holes in gloves prior to use, for unused examination gloves are reported as high as 58%. Rates as high as 7% have been reported for sterile latex gloves. Incidences of breaching the latex barrier during use vary with procedure but have been reported as high as 50%. In recent years, a number of devices have been developed to detect holes in latex gloves as they are being worn. Detection of increased electrical conductivity that takes place through the holes in the gloves is used to activate an audible alarm. The primary purpose of this research was to investigate the validity of this method for hole detection. This evaluation was accomplished with both basic laboratory equipment and commercially available instruments. We did not evaluate or critically compare the individual devices. We also investigated the use of electrical conductivity as a quality assurance (QA) procedure, and the degradation of latex gloves due to storage and exposure to laboratory atmospheres and disinfectants.

  8. PUNCTURE TEST CHARACTERIZATION OF GLOVEBOX GLOVES

    SciTech Connect

    Korinko, P.; Chapman, G.

    2012-02-29

    An experiment was conducted to determine the puncture resistance of 15 gloves that are used or proposed for use in the Tritium Facility at Savannah River Site (SRS). These data will serve as a baseline for characterization and may be incorporated into the glove procurement specification. The testing was conducted in agreement with ASTM D120 and all of the gloves met or exceeded the minimum requirements. Butyl gloves exhibited puncture resistance nearly 2.5 times the minimum requirements at SRS while Polyurethane was nearly 7.5x the minimum.

  9. Detection of Purple Sulfur Bacteria in Purple and Non-purple Dairy Wastewaters.

    PubMed

    Dungan, Robert S; Leytem, April B

    2015-09-01

    The presence of purple bacteria in manure storage lagoons is often associated with reduced odors. In this study, our objectives were to determine the occurrence of purple sulfur bacteria (PSB) in seven dairy wastewater lagoons and to identify possible linkages between wastewater properties and purple blooms. Community DNA was extracted from composited wastewater samples, and a conservative 16S rRNA gene sequence within and genes found in both purple sulfur and nonsulfur bacteria was amplified. Analysis of the genes indicated that all of the lagoons contained sequences that were 92 to 97% similar with . Sequences from a few lagoons were also found to be similar with other PSB, such as sp. (97%), (93-100%), and (95-98%). sequences amplified from enrichment and pure cultures were most similar to (93-96%). Carotenoid pigment concentrations, which were used as an indirect measure of purple bacteria levels in the wastewaters, were found to be positively correlated with salinity, nitrogen, total and volatile solids, and chemical oxygen demand; however, salinity could be the dominant factor influencing purple blooms. Due to the detection of PSB sequences in all lagoons, our findings suggest that the non-purple lagoons may have been purple in the past or may have the potential to become purple in the future.

  10. High Performance EVA Glove Collaboration: Glove Injury Data Mining Effort

    NASA Technical Reports Server (NTRS)

    Reid, C. R.; Benosn, E.; England, S.; Norcross, J. R.; McFarland, S. M.; Rajulu, S.

    2014-01-01

    Human hands play a significant role during extravehicular activity (EVA) missions and Neutral Buoyancy Lab (NBL) training events, as they are needed for translating and performing tasks in the weightless environment. It is because of this high frequency usage that hand- and arm-related injuries and discomfort are known to occur during training in the NBL and while conducting EVAs. Hand-related injuries and discomforts have been occurring to crewmembers since the days of Apollo. While there have been numerous engineering changes to the glove design, hand-related issues still persist. The primary objectives of this study are therefore to: 1) document all known EVA glove-related injuries and the circumstances of these incidents, 2) determine likely risk factors, and 3) recommend ergonomic mitigations or design strategies that can be implemented in the current and future glove designs. METHODS: The investigator team conducted an initial set of literature reviews, data mining of Lifetime Surveillance of Astronaut Health (LSAH) databases, and data distribution analyses to understand the ergonomic issues related to glove-related injuries and discomforts. The investigation focused on the injuries and discomforts of U.S. crewmembers who had worn pressurized suits and experienced glove-related incidents during the 1980 to 2010 time frame, either during training or on-orbit EVA. In addition to data mining of the LSAH database, the other objective of the study was to find complimentary sources of information such as training experience, EVA experience, suit-related sizing data, and hand-arm anthropometric data to be tied to the injury data from LSAH. RESULTS: Past studies indicated that the hand was the most frequently injured part of the body during both EVA and NBL training. This study effort thus focused primarily on crew training data in the NBL between 2002 and 2010. Of the 87 recorded training incidents, 19 occurred to women and 68 to men. While crew ages ranged from

  11. Permeation of chemicals through glove-box glove materials

    SciTech Connect

    Vahdat, N,; Johnson, J.S.; Neidhardt, A.; Cheng, J.; Weitzman, D.

    1994-06-30

    The resistance of two commercial gloves to 20 chemicals commonly used in glove boxes was studied. The chemicals were inorganic acids/bases/salts, organic acids, alcohols, glycols, halogen compounds, sulfur compounds, and hydrocarbons. The ASTM cell was used to study permeation of volatile organic compounds through protective clothing materials using air, flame ionization detector/gas chromatography; a modified version of the cell was used with isopropanol for the nonvolatile organic compounds. Permeation of inorganic compounds through the elastomers was studied using the ASTM cell with water, conductivity meter. A Teflon cell was used with HF and ammonium hydrofluoride. Results: Hypalon protects against all chemicals except trichloroethylene (TCE) and CCl{sub 4}. Acetic acid and ethanol permeated through neoprene, which also did not protect against TCE and CCl{sub 4}. Sulfuric acid dissolved neoprene in 5 h. Kerosene permeated through neoprene in 5 h. Although neoprene showed good resistance to cutting oil, TCE in cutting oil broke through in 61 min. Neoprene showed good protection against all the other chemicals with no breakthrough before 6 h.

  12. Glove Perforation Rate in Surgery: A Randomized, Controlled Study To Evaluate the Efficacy of Double Gloving.

    PubMed

    Makama, Jerry Godfrey; Okeme, Ibrahim Mohammed; Makama, Elizabeth Jerry; Ameh, Emmanuel Adoyi

    2016-08-01

    The risk of exposure of either the patient or the surgeon to communicable disease when the surgical glove is perforated is important. Both patients and the surgical team need to be protected from this risk. Therefore, we intended to determine the efficacy of double gloving in our center. This was a prospective cohort study, involving (randomly selected) surgeons, who wore single or double latex surgical gloves during procedures. Gloves were collected and evaluated for perforations (using air insufflation and water leak methods). A total of 1,536 gloves were collected (512 single gloves and 1,024 double gloves), with 78 of 512 gloves perforated, giving a rate of 15.2%. Perforation rate was 15.2% in single gloves, 14.4% in double gloves, 15.5% in emergency operations, and 14.3% in elective surgery. It was highest (30.8%) among registrars in training, particularly when doing any deep (16.0%) surgery. Glove perforation rate was highest (17.4%) among general surgery procedures as opposed to pediatric surgery (14.6%), urology (13.9%), neurosurgery (11.7%), and plastic surgery (10.6%), with (42.1%) index finger injury. In unused (control group) gloves, the rate of perforation was (0.8%). There was a substantial difference in the overall perforation rate between single and double glove sets (15.2% versus 14.4%) (X(2) = 1748, p < 0.0001). However, among the double set, total gloves [outer and inner set] analysis revealed a perforation rate of 27.5% (141 of 512). Of this set, the number of inner gloves that perforated as a result of a through and through puncture from outer to the inner gloves gave a rate of 1.17% (six of 512). Thus, the protection offered by double gloves was 98.83% (X(2) = 280.9, p < 0.0001) even if the outer gloves were perforated. The use of double gloves has more than 90% protection to patient and the surgeon. Therefore, wearing double gloves should be encouraged in surgery.

  13. 21 CFR 878.4460 - Surgeon's glove.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 21 Food and Drugs 8 2010-04-01 2010-04-01 false Surgeon's glove. 878.4460 Section 878.4460 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GENERAL AND PLASTIC SURGERY DEVICES Surgical Devices § 878.4460 Surgeon's glove....

  14. 21 CFR 878.4460 - Surgeon's glove.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 21 Food and Drugs 8 2014-04-01 2014-04-01 false Surgeon's glove. 878.4460 Section 878.4460 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GENERAL AND PLASTIC SURGERY DEVICES Surgical Devices § 878.4460 Surgeon's glove....

  15. 21 CFR 878.4460 - Surgeon's glove.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 21 Food and Drugs 8 2012-04-01 2012-04-01 false Surgeon's glove. 878.4460 Section 878.4460 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GENERAL AND PLASTIC SURGERY DEVICES Surgical Devices § 878.4460 Surgeon's glove....

  16. 21 CFR 878.4460 - Surgeon's glove.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 21 Food and Drugs 8 2011-04-01 2011-04-01 false Surgeon's glove. 878.4460 Section 878.4460 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GENERAL AND PLASTIC SURGERY DEVICES Surgical Devices § 878.4460 Surgeon's glove....

  17. 21 CFR 878.4460 - Surgeon's glove.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 21 Food and Drugs 8 2013-04-01 2013-04-01 false Surgeon's glove. 878.4460 Section 878.4460 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GENERAL AND PLASTIC SURGERY DEVICES Surgical Devices § 878.4460 Surgeon's glove....

  18. Abrasion resistance of medical glove materials.

    PubMed

    Walsh, Donna L; Schwerin, Matthew R; Kisielewski, Richard W; Kotz, Richard M; Chaput, Maria P; Varney, George W; To, Theresa M

    2004-01-15

    Due to the increasing demand for nonlatex medical gloves in the health-care community, there is a need to assess the durability of alternative glove materials. This study examines durability characteristics of various glove materials by abrasion resistance testing. Natural rubber latex (latex), polyvinyl chloride (vinyl), acrylonitrile butadiene (nitrile), polychloroprene (neoprene), and a styrene-ethylene/butylene-styrene block copolymer (SEBS) were tested. All test specimens, with the exception of the vinyl, were obtained from surgical gloves. Unaged out-of-the-box specimens as well as those subjected to various degrees of artificial aging were included in the study. After the abrasion sequence, the barrier integrity of the material was assessed through the use of a static leak test. Other traditional tests performed on these materials were viral penetration to validate the abrasion data and tear testing for comparative purposes. The results indicate that specific glove-material performance is dependent upon the particular test under consideration. Most notably, abrasion, even in controlled nonsevere conditions, may compromise to varying degrees the barrier integrity of latex, vinyl, SEBS, nitrile, and neoprene glove materials. However, as evidenced by the results of testing three brands of neoprene gloves, the abrasion resistance of any one glove material may be significantly affected by variations in production processes.

  19. The Efficacy of Anti-vibration Gloves

    PubMed Central

    Hewitt, Sue; Dong, Ren; McDowell, Tom; Welcome, Daniel

    2016-01-01

    Anyone seeking to control the risks from vibration transmitted to the hands and arms may contemplate the use of anti-vibration gloves. To make an informed decision about any type of personal protective equipment, it is necessary to have performance data that allow the degree of protection to be estimated. The information provided with an anti-vibration glove may not be easy to understand without some background knowledge of how gloves are tested and does not provide any clear route for estimating likely protection. Some of the factors that influence the potential efficacy of an anti-vibration glove include how risks from hand–arm vibration exposure are assessed, how the standard test for a glove is carried out, the frequency range and direction of the vibration for which protection is sought, how much hand contact force or pressure is applied and the physical limitations due to glove material and construction. This paper reviews some of the background issues that are useful for potential purchasers of anti-vibration gloves. Ultimately, anti-vibration gloves cannot be relied on to provide sufficient and consistent protection to the wearer and before their use is contemplated all other available means of vibration control ought first to be implemented. PMID:27582615

  20. Remote tactile sensing glove-based system.

    PubMed

    Culjat, Martin O; Son, Ji; Fan, Richard E; Wottawa, Christopher; Bisley, James W; Grundfest, Warren S; Dutson, Erik P

    2010-01-01

    A complete glove-based master-slave tactile feedback system was developed to provide users with a remote sense of touch. The system features a force-sensing master glove with piezoresistive force sensors mounted at each finger tip, and a pressure-transmitting slave glove with silicone-based pneumatically controlled balloon actuators, mounted at each finger tip on another hand. A control system translates forces detected on the master glove, either worn by a user or mounted on a robotic hand, to discrete pressure levels at the fingers of another user. System tests demonstrated that users could accurately identify the correct finger and detect three simultaneous finger stimuli with 99.3% and 90.2% accuracy, respectively, when the subjects were located in separate rooms. The glove-based tactile feedback system may have application to virtual reality, rehabilitation, remote surgery, medical simulation, robotic assembly, and military robotics.

  1. Randomized controlled trial of glove perforation in single- and double-gloving in episiotomy repair after vaginal delivery.

    PubMed

    Punyatanasakchai, Piyaphan; Chittacharoen, Apichart; Ayudhya, Nathpong Israngura Na

    2004-10-01

    The aims of the study presented here were to compare the rate of glove perforation between single-gloving and double-gloving methods, and the time of operation and level of surgeon in episiotomy repair after vaginal delivery. A prospective randomized controlled trial was performed from the beginning of May to the end of December, 2002 at Ramathibodi Hospital. A comparison of glove perforation between single-gloving and double-gloving methods was performed. Glove perforations were tested by filling each glove with water. Glove perforation rate, position of perforation, time of operation and surgeon level of experience were analyzed. One hundred and fifty sets of double-gloving method and 150 sets of single-gloving method were evaluated. The glove perforation rates were 4.6 and 18% in double-inner gloves and single-gloves, respectively, with statistical difference (P < 0.05). There was no significant difference between glove perforation rates in double-outer gloves (22.6%) and single-gloves (18%). There was matched perforation of the same finger of both outer and inner gloves in 2% of all double-inner gloves. The frequency of glove perforation was classified by the surgeon's level of experience and time of operation was no difference in each level. The double-gloving method significantly reduced the risk of exposure of the surgeon's hand to the patient's blood, when compared with the single-gloving method in episiotomy repair. There were no differences in the rate of glove perforations compared to the time of operation and level of surgeon.

  2. Thermodynamic properties of purple membrane.

    PubMed Central

    Marque, J; Eisenstein, L; Gratton, E; Sturtevant, J M; Hardy, C J

    1984-01-01

    We measured the density, expansivity, specific heat at constant pressure, and sound velocity of suspensions of purple membrane from Halobacterium halobium and their constituent buffers. From these quantities we calculated the apparent values for the density, expansivity, adiabatic compressibility, isothermal compressibility, specific heat at constant pressure, and specific heat at constant volume for the purple membrane. These results are discussed with respect to previously reported measurements on globular proteins and lipids. Our data suggest a simple additive model in which the protein and lipid molecules expand and compress independently of each other. However, this simple model seems to fail to describe the specific heat data. Our compressibility data suggest that bacteriorhodopsin in native purple membrane binds less water than many globular proteins in neutral aqueous solution, a finding consistent with the lipid surround of bacteriorhodopsin in purple membrane. PMID:6498271

  3. Performance analysis of exam gloves used for aseptic rodent surgery.

    PubMed

    LeMoine, Dana M; Bergdall, Valerie K; Freed, Carrie

    2015-05-01

    Aseptic technique includes the use of sterile surgical gloves for survival surgeries in rodents to minimize the incidence of infections. Exam gloves are much less expensive than are surgical gloves and may represent a cost-effective, readily available option for use in rodent surgery. This study examined the effectiveness of surface disinfection of exam gloves with 70% isopropyl alcohol or a solution of hydrogen peroxide and peracetic acid (HP-PA) in reducing bacterial contamination. Performance levels for asepsis were met when gloves were negative for bacterial contamination after surface disinfection and sham 'exertion' activity. According to these criteria, 94% of HP-PA-disinfected gloves passed, compared with 47% of alcohol-disinfected gloves. In addition, the effect of autoclaving on the integrity of exam gloves was examined, given that autoclaving is another readily available option for aseptic preparation. Performance criteria for glove integrity after autoclaving consisted of: the ability to don the gloves followed by successful simulation of wound closure and completion of stretch tests without tearing or observable defects. Using this criteria, 98% of autoclaved nitrile exam gloves and 76% of autoclaved latex exam gloves met performance expectations compared with the performance of standard surgical gloves (88% nitrile, 100% latex). The results of this study support the use of HP-PA-disinfected latex and nitrile exam gloves or autoclaved nitrile exam gloves as viable cost-effective alternatives to sterile surgical gloves for rodent surgeries.

  4. Performance Analysis of Exam Gloves Used for Aseptic Rodent Surgery

    PubMed Central

    LeMoine, Dana M; Bergdall, Valerie K; Freed, Carrie

    2015-01-01

    Aseptic technique includes the use of sterile surgical gloves for survival surgeries in rodents to minimize the incidence of infections. Exam gloves are much less expensive than are surgical gloves and may represent a cost-effective, readily available option for use in rodent surgery. This study examined the effectiveness of surface disinfection of exam gloves with 70% isopropyl alcohol or a solution of hydrogen peroxide and peracetic acid (HP–PA) in reducing bacterial contamination. Performance levels for asepsis were met when gloves were negative for bacterial contamination after surface disinfection and sham ‘exertion’ activity. According to these criteria, 94% of HP–PA-disinfected gloves passed, compared with 47% of alcohol-disinfected gloves. In addition, the effect of autoclaving on the integrity of exam gloves was examined, given that autoclaving is another readily available option for aseptic preparation. Performance criteria for glove integrity after autoclaving consisted of: the ability to don the gloves followed by successful simulation of wound closure and completion of stretch tests without tearing or observable defects. Using this criteria, 98% of autoclaved nitrile exam gloves and 76% of autoclaved latex exam gloves met performance expectations compared with the performance of standard surgical gloves (88% nitrile, 100% latex). The results of this study support the use of HP–PA-disinfected latex and nitrile exam gloves or autoclaved nitrile exam gloves as viable cost-effective alternatives to sterile surgical gloves for rodent surgeries. PMID:26045458

  5. The WPI space glove design project

    NASA Technical Reports Server (NTRS)

    Durgin, W. W.; Hoffman, A. H.; Ault, H. K.; Lutz, F. C.

    1985-01-01

    Worcester Polytechnic Institute (WPI) was one of four colleges and universities awarded NASA grants for student design and development of an improved glove for space suits. This paper traces the design, development and testing of the WPI prototype glove. Test results showed that the glove did not significantly limit hand and finger motion when pressurized at 8 psi, except in the spherical grip mode. This project demonstrated that problems originating from space technology provide excellent vehicles for student learning and can generate creative solutions.

  6. EVALUATION OF GLOVEBOX GLOVES FOR EFFECTIVE PERMEATION CONTROL

    SciTech Connect

    Korinko, P.

    2012-02-29

    A research and development task was undertaken to determine the permeabilities of hydrogen and dry air through different polymeric glove materials that are used to maintain the integrity of glovebox secondary containment. Fifteen different glove samples were obtained from four different manufacturers and samples cut from these gloves were tested. The gloves included baseline butyl rubber, Viton{reg_sign}, Dupont{reg_sign} Hypalon{reg_sign}, polyurethane, as well as composite gloves. The testing indicated that all of the vendor's butyl rubber gloves and the Jung Viton{reg_sign} gloves performed comparably in both gases.

  7. RoboGlove: Initial Work Toward a Robotically Assisted EVA Glove

    NASA Technical Reports Server (NTRS)

    Rogers, Jonathan

    2015-01-01

    The RoboGlove is a device designed to provide additional grip strength or endurance for a user. In applying this Robonaut 2 spinoff technology to the Phase VI Space Suit glove, the project is using robotic tendons and actuators to regain some of the hand performance that is lost when wearing a pressurized glove. An array of sensors embedded into the finger softgoods provides input to the control system which retracts the tendons, helping to close the user's hand. While active, this system provides augmentation, but is nonintrusive to glove usage when disabled.

  8. Dexterity Testing of Chemical Defense Gloves.

    DTIC Science & Technology

    1986-05-01

    Ij.’" ing the Nomex overglove, probably due in large part to a decrease in mobility caused by wearing three layers of gloves. Of the three remaining...upper ranges of * ’ the size distribution, which probably explains why no large gloves were selected. Since this study was concerned with differences...Crotch 3 Nelgh: ____ ____ Digit 4 Girt base _____ ____ Crotch 4. Haigh : ____ ____ Digit 4 Cirt hlr _____ ____ Digit I Leogt, ____ __ Digit 5 Girc base

  9. Improved Chemical Protective Gloves Using Elastomeric Nanocomposites

    DTIC Science & Technology

    2002-11-14

    available with 25-30 mil thick butyl rubber gloves. Neoprene nanocomposites were developed in Phase 1 and will be combined with Neoprene substrate in...protection currently available with 25-30 mil thick butyl rubber gloves. Neoprene nanocomposites were developed in Phase 1 and will be combined with... nanocomposite coated substrates or multilayer structures can have better flame resistance than butyl rubber as measured by vertical flame testing

  10. Glove box on vehicular instrument panel

    DOEpatents

    Atarashi, Kazuya

    1985-01-01

    A glove box for the upper surface of an automobile dashboard whereby it may be positioned close to the driver. The glove box lid is pivotally supported by arms extending down either side to swing forwardly for opening. A hook is pivotally support adjacent an arm and weighted to swing into engagement with the arm to prevent opening of the lid during abrupt deceleration. A toggle spring assists in maintaining the lid in either the open or closed position.

  11. Influence of orthopedic reinforced gloves versus double standard gloves on contamination events during small animal orthopedic surgery.

    PubMed

    Hayes, Galina; Singh, Ameet; Gibson, Tom; Moens, Noel; Oblak, Michelle; Ogilvie, Adam; Reynolds, Debbie

    2017-07-08

    To determine the influence of orthopedic reinforced gloves on contamination events during small animal orthopedic surgery. Prospective randomized controlled trial SAMPLE POPULATION: Two hundred and thirty-seven pairs of orthopedic gloves (474 gloves) and 203 pairs of double standard gloves (812 gloves) worn during 193 orthopedic procedures. Primary and assistant surgeons were randomized to wear either orthopedic reinforced gloves or double gloves. Gloves were leak tested to identify perforations at the end of procedures. Perforations detected intraoperatively or postoperatively were recorded. A contamination event was defined as at least one perforation on either hand for orthopedic reinforced gloves, or a perforation of both the inner and outer glove on the same hand for double gloves. Baseline characteristics between the 2 intervention groups were similar. There was no difference in contamination events between the double-gloved and orthopedic gloved groups (OR = 0.95, 95% CI = 0.49-1.87, P = .89). The same percentage of contamination events (8% glove pairs used) occurred in the double gloved group (17 contamination events) and in the orthopedic gloved group (19 contamination events). The odds of a contamination event increased by 1.02 (95% CI 1.01-1.03, P < .001) with each additional minute of surgery. Orthopedic reinforced gloves and double standard gloving were equally effective at preventing contamination events in small animal orthopedic procedures. Surgeons reluctant to double glove due to perceptions of decreased dexterity and discomfort may safely opt for wearing orthopedic gloves, which may improve their compliance. © 2017 The American College of Veterinary Surgeons.

  12. Minimizing Glovebox Glove Breaches: PART II.

    SciTech Connect

    Cournoyer, M. E.; Andrade, R.M.; Taylor, D. J.; Stimmel, J. J.; Zaelke, R. L.; Balkey, J. J.

    2005-01-01

    As a matter of good business practices, a team of glovebox experts from Los Alamos National Laboratory (LANL) has been assembled to proactively investigate processes and procedures that minimize unplanned breaches in the glovebox, e.g., glove failures. A major part of this effort involves the review of glovebox glove failures that have occurred at the Plutonium Facility and at the Chemical and Metallurgy Research Facility. Information dating back to 1993 has been compiled from formal records. This data has been combined with information obtained from a baseline inventory of about 9,000 glovebox gloves. The key attributes tracked include those related to location, the glovebox glove, type and location of breaches, the worker, and the consequences resulting from breaches. This glovebox glove failure analysis yielded results in the areas of the ease of collecting this type of data, the causes of most glove failures that have occurred, the effectiveness of current controls, and recommendations to improve hazard control systems. As expected, a significant number of breaches involve high-risk operations such as grinding, hammering, using sharps (especially screwdrivers), and assembling equipment. Surprisingly, tasks such as the movement of equipment and material between gloveboxes and the opening of cans are also major contributions of breaches. Almost half the gloves fail within a year of their install date. The greatest consequence for over 90% of glovebox glove failures is alpha contamination of protective clothing. Personnel self-monitoring at the gloveboxes continues to be the most effective way of detecting glovebox glove failures. Glove failures from these tasks can be reduced through changes in procedures and the design of remote-handling apparatus. The Nuclear Materials Technology Division management uses this information to improve hazard control systems to reduce the number of unplanned breaches in the glovebox further. As a result, excursions of contaminants

  13. Disposable non-sterile gloves: a policy for appropriate usage.

    PubMed

    Raybould, L M

    Since the implementation of universal precautions, the use of disposable gloves has become part of everyday clinical practice. Guidance has been published to advise healthcare workers of the risks of latex allergies associated with the wearing of powdered latex gloves. The literature supports the use of gloves when contact with blood or body fluids is likely. However, an audit of glove usage indicated that practitioners were wearing gloves inappropriately, i.e. to wash patients (20%). The results of this study also demonstrated that a small percentage of staff (20%) were wearing vinyl gloves to deal with blood spillages and for venepuncture (13%) and cannulation (10%). A glove policy and a flow chart to assist staff in the selection of gloves were introduced. An educational programme for all hospital staff was commenced. These measures can assist healthcare workers in making an informed choice regarding glove usage.

  14. Cross Contamination: Are Hospital Gloves Reservoirs for Nosocomial Infections?

    PubMed

    Moran, Vicki; Heuertz, Rita

    2017-01-01

    Use of disposable nonsterile gloves in the hospital setting is second only to proper hand washing in reducing contamination during patient contact. Because proper handwashing is not consistently practiced, added emphasis on glove use is warranted. There is a growing body of evidence that glove boxes and dispensers available to healthcare workers are contaminated by daily exposure to environmental organisms. This finding, in conjunction with new and emerging antibiotic-resistant bacteria, poses a threat to patients and healthcare workers alike. A newly designed glove dispenser may reduce contamination of disposable gloves. The authors investigated contamination of nonsterile examination gloves in an Emergency Department setting according to the type of dispenser used to access gloves. A statistically significant difference existed between the number of bacterial colonies and the type of dispenser: the downward-facing glove dispenser had a lower number of bacteria on the gloves. There was no statistically significant difference in the number of gloves contaminated between the two types of glove dispensers. The study demonstrated that contamination of disposable gloves existed. Additional research using a larger sample size would validate a difference in the contamination of disposable gloves using outward or downward glove dispensers.

  15. 76 FR 28308 - Compliance Policy Guide: Surgeons' Gloves and Patient Examination Gloves; Defects-Criteria for...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-05-17

    ... HUMAN SERVICES Food and Drug Administration 21 CFR Part 800 Compliance Policy Guide: Surgeons' Gloves and Patient Examination Gloves; Defects--Criteria for Direct Reference Seizure AGENCY: Food and Drug Administration, HHS. ] ACTION: Notice of availability. SUMMARY: The Food and Drug Administration (FDA) is...

  16. Disinfection of gloves: feasible, but pay attention to the disinfectant/glove combination.

    PubMed

    Scheithauer, S; Häfner, H; Seef, R; Seef, S; Hilgers, R D; Lemmen, S

    2016-11-01

    Compliance with hand hygiene is complicated by indications for hand disinfection in rapid succession during the care of one patient. In such situations, disinfection of gloves could facilitate better workflow and optimize compliance rates. We analysed the efficacy of disinfecting gloves by comparing an individual effect of five different hand disinfectant solutions in combination with three different glove types. The investigation was performed in accordance with DIN EN 1500:2013. For all combinations, ten analyses were performed, including (1) right/left-hand examination disinfection efficacy after the first and fifth contamination with E. coli K12 NCTC 10538, (2) recovery rates after contamination, (3) reduction efficacy, (4) fingertip immersion culture, and (5) check for tightness. Disinfection of the ungloved hands was taken as an additional benchmark. The disinfection efficacy for all disinfectant/glove combinations was better with rather than without gloves. For eight combinations, the disinfection efficacy was always >5.0 log10. There were significant differences within the gloves (P=0.0021) and within the disinfectant product (P=0.0023), respectively. In detail, Nitril Blue Eco-Plus performed significantly better than Vasco Braun (P=0.0017) and Latex Med Comfort (P=0.0493). Descoderm showed a significantly worse performance than Promanum pure (P=0.043). In the check for tightness, only the Vasco Braun gloves showed no leaks in all samples. There were relevant qualitative differences pertaining to the comfort of disinfecting gloves. The disinfection efficacy for the different disinfectant/glove combinations was greater than for the ungloved hands. However, various disinfectant/glove combinations produce relevant differences as regards disinfection efficacy. Copyright © 2016 The Healthcare Infection Society. Published by Elsevier Ltd. All rights reserved.

  17. A moving robotic hand system for whole-glove permeation and penetration: captan and nitrile gloves.

    PubMed

    Phalen, Robert; Hee, Shane Que

    2008-04-01

    The aim of this study was to develop a robotic hand to test the influence of hand movement on the permeation/penetration of captan through disposable nitrile rubber gloves. An available robotic hand was modified to within one standard deviation of the anthropometric 50th percentile male hand. Permeation tests used a nylon inspection glove interposed between medium-size outer and inner nitrile gloves, the latter protected the hand. Permeation of an aqueous emulsion (217 mg/mL) of captan was conducted at 35 degrees C +/- 0.7 degrees C. A new surface wipe technique facilitated collection of captan from the inner surface of the exposed nitrile gloves, a technique favored above rinse methods that extracted captan from within the glove. With hand movement, the permeated mass of captan collected after 8 hr ranged from 1.6 to 970 microg (Brand A) and 8.6 +/- 1.2 microg (Brand B). Without hand movement, the corresponding masses ranged from 1.4 to 8.4 microg (Brand A) and 11 +/- 3 mg (Brand B). These results were not significantly different at p < or = 0.05 using parametric and nonparametric statistical tests but indicated that hand movement could influence the precision of permeation (F-test p < or = 0.05). One glove exhibited failure after 2 hr with movement, in comparison with 0.5 to 9.9 microg captan with no movement. Hand movement did not appear to significantly affect the permeation of captan through nitrile gloves. However, hand movement did influence physical and/or chemical degradation, resulting in glove failures. The robotic hand simulated normal hand motions, was reliable, and could be used to assess the influence of hand movement on the permeation of nonvolatile components through gloves. Future research should continue to investigate the influence of hand movement and additional work factors on the permeation, penetration, and physical integrity of protective gloves.

  18. Factors that influence the selection of sterile glove brand: a randomized controlled trial evaluating the performance and cost of gloves.

    PubMed

    Johnson, Rebecca L; Smith, Hugh M; Duncan, Christopher M; Torsher, Laurence C; Schroeder, Darrell R; Hebl, James R

    2013-07-01

    To determine whether glove use modifies tactile and psychomotor performance of health care providers when compared with no glove use and to evaluate factors that influence the selection of sterile glove brand. Forty-two anesthesia providers (nine anesthesiologists, seven nurse anesthetists, 20 residents, six student nurse anesthetists) enrolled in and completed this cross-over randomized trial from May 2010 until August 2011. Participants underwent standardized psychomotor testing while wearing five different types of protective gloves. Assessments of psychomotor performance included tactile, fine motor/dexterity, and hand-eye coordination tests. Subjective ratings of glove comfort and performance were reported at the completion of each glove trial. The manufacturer's suggested retail price was collected for each glove tested. There were statistically significant differences in touch sensitivity for all nerve distributions, with all glove types resulting in less sensitivity than a bare hand. When compared with the non-sterile glove, only the thickest glove tested (Ansell Perry Orthopaedic) was found to have less touch sensitivity. Fine motor dexterity testing revealed no statistically significant differences in time to completion amongst glove types or bare handed performance. In hand-eye coordination testing across treatment conditions, the thickest glove tested (Ansell Perry(®) Orthopaedic) was the only glove to show a statistically significant difference from a bare hand. There were statistically significant differences in glove comfort ratings across glove types, with latex-free, powder-free (Cardinal Esteem(®)), and latex powder-free (Mölnlycke-Biogel(®)) rated highest; however, there were no statistically significant differences in subjective performance ratings across glove types. Given the observed similarities in touch sensitivity and psychomotor performance associated with five different glove types, our results suggest that subjective provider

  19. Constructing Gloved wings for aerodynamic studies

    NASA Technical Reports Server (NTRS)

    Bohn-Meyer, Marta R.

    1988-01-01

    Recently, two aircraft from the Dryden Flight Research Facility were used in the general study of natural laminar flow (NLF). The first, an F-14A aircraft on short-term loan from the Navy, was used to investigate transonic natural laminar flow. The second, an F-15A aircraft on long-term loan from the Air Force, was used to examine supersonic NLF. These tests were follow-on experiments to the NASA F-111 NLF experiment conducted in 1979. Both wings of the F-14A were gloved, in a two-phased experiment, with full-span(upper surface only) airfoil shapes constructed primarily of fiberglass, foam, and resin. A small section of the F-15A right wing was gloved in a similar manner. Each glove incorporated provisions for instrumentation to measure surface pressure distributions. The F-14A gloves also had provisions for instrumentation to measure boundary layer profiles, acoustic environments, and surface pitot pressures. Discussions of the techniques used to construct the gloves and to incorporate the required instrumentation are presented.

  20. Occult glove perforation during ophthalmic surgery.

    PubMed Central

    Apt, L; Miller, K M

    1992-01-01

    We examined the latex surgical gloves used by 56 primary surgeons in 454 ophthalmic surgical procedures performed over a 7-month period. Of five techniques used to detect pinholes, air inflation with water submersion and compression was found to be the most sensitive, yielding a 6.80% prevalence in control glove pairs and a 21.8% prevalence in postoperative study glove pairs, for a 15.0% incidence of surgically induced perforations (P = 0.000459). The lowest postoperative perforation rate was 11.4% for cataract and intraocular lens surgery, and the highest was 41.7% for oculoplastic procedures. Factors that correlated significantly with the presence of glove perforations as determined by multiple logistic regression analysis were oculoplastic and pediatric ophthalmology and strabismus surgical procedures, surgeon's status as a fellow in training, operating time, and glove size. The thumb and index finger of the nondominant hand contained the largest numbers of pinholes. These data suggest strategies for reducing the risk of cross-infection during ophthalmic surgery. PMID:1494836

  1. The development and evaluation of an ergonomic glove.

    PubMed

    Muralidhar, A; Bishu, R R; Hallbeck, M S

    1999-12-01

    The primary intent of this study was to determine if a hand glove could be designed on a criterion of selective protection. Force distribution patterns on the palmar side of hand were obtained from various studies to develop zones of hand that needed protection. A new design for gloves was developed based on the principle of selective protection, where protective material is introduced in varying levels over different parts of the glove, in order to provide protection where it is most needed, and at the same time preserve the desirable dexterity and strength capabilities of the barehand, optimizing the trade-off between protection and performance. Two pairs of prototype gloves incorporating different levels of protection were fabricated and tested using a battery of performance tests and an algometer test for pressure sensitivity. The test battery comprising four dexterity tasks and a maximal voluntary grip strength task was used to assess a number of glove conditions, including the two prototype gloves developed. The results indicate that the performance of the prototype gloves are comparable, and that the performance times for the double glove and the two prototype gloves tested were not significantly different. For the grip strength, the two prototype gloves were better than the double glove. The assembly task performance for the prototype II (laminar glove) was significantly lower than that of the other glove types tested. It appears that gloves of variable thickness can be developed to afford adequate protection at zones of most need. Glove manufacturers are recommended to use an ergonomic approach in the design of gloves. Such an approach, besides protecting the safety objective of gloves, could enhance productivity considerably.

  2. Purple is the new Orange

    USDA-ARS?s Scientific Manuscript database

    Blood orange and Cara cara-like citrus varieties with purple or red fruit color, increased antioxidants and modified flavor could be the next generation of cultivars produced via genetic engineering. These varieties are being developed by enhancing the presence of anthocyanin and lycopene pigments...

  3. Method for forming a glove attachment

    NASA Technical Reports Server (NTRS)

    Dawn, Frederic S. (Inventor); Guy, Walter W. (Inventor); Kosmo, Joseph (Inventor); Drennan, Arthur P. (Inventor); Tschirch, Richard P. (Inventor)

    1995-01-01

    An attachment principally for the palm of an astronaut glove to enhance the gripping area of the palm without detracting from the flexibility and utility of the glove is presented. The attachment is a composite construction formed from a layer of silicone rubber having an outer surface with a friction configuration and another layer of silicone rubber in which a Nomex Aramid mesh fabric is embedded prior to curing. The method of construction involves the use of a mold with a friction configuration surface. A first layer of silicone rubber or sealant is disposed in the mold and allowed to set for an hour. A second layer of silicone rubber or sealant is layered over the first layer and leveled. A Nomex Aramid mesh fabric is embedded into the second layer and the composite is permitted to cure. When cured, a configured area of the composite construction is glued or stitched to the palm area of the glove.

  4. A glove-likeability study of specially-treated gloves in the detonator manufacturing and packaging industry

    DOE PAGES

    Cournoyer, Michael E.; Lawton, Cindy M.; Lounsbury, James B.; ...

    2016-03-22

    We use hand gloves (hereafter referred to as gloves) in the detonator manufacturing and packaging operations. As part of a process improvement program, new glove formulations have been considered that lower the overall risk of detonator operations by reducing ergonomic injury factors. Gloves with a specially treated surface for extra grip and control are now commercially available and have been recommended for use in detonator operations. A Glove Likeability Study demonstrated that detonator manufacturing and packaging workers prefer gloves with a specially treated surface over currently approved gloves made from latex and nitrile formulations. Glove material compatibility tests indicate thatmore » the recommended gloves are as compatible if not more compatible as the currently approved gloves for working with secondary explosives. Thus, these gloves with a specially treated surface for extra grip and control are now available for tasks where sensitivity and fingertip control are crucial. Replacement of the current gloves with gloves with a specially treated surface improves the safety configuration of detonator manufacturing and packaging operations.« less

  5. A glove-likeability study of specially-treated gloves in the detonator manufacturing and packaging industry

    SciTech Connect

    Cournoyer, Michael E.; Lawton, Cindy M.; Lounsbury, James B.; Armijo, Mark A.

    2016-03-22

    We use hand gloves (hereafter referred to as gloves) in the detonator manufacturing and packaging operations. As part of a process improvement program, new glove formulations have been considered that lower the overall risk of detonator operations by reducing ergonomic injury factors. Gloves with a specially treated surface for extra grip and control are now commercially available and have been recommended for use in detonator operations. A Glove Likeability Study demonstrated that detonator manufacturing and packaging workers prefer gloves with a specially treated surface over currently approved gloves made from latex and nitrile formulations. Glove material compatibility tests indicate that the recommended gloves are as compatible if not more compatible as the currently approved gloves for working with secondary explosives. Thus, these gloves with a specially treated surface for extra grip and control are now available for tasks where sensitivity and fingertip control are crucial. Replacement of the current gloves with gloves with a specially treated surface improves the safety configuration of detonator manufacturing and packaging operations.

  6. Design options for improving protective gloves for industrial assembly work.

    PubMed

    Dianat, Iman; Haslegrave, Christine M; Stedmon, Alex W

    2014-07-01

    The study investigated the effects of wearing two new designs of cotton glove on several hand performance capabilities and compared them against the effects of barehanded, single-layered and double cotton glove conditions when working with hand tools (screwdriver and pliers). The new glove designs were based on the findings of subjective hand discomfort assessments for this type of work and aimed to match the glove thickness to the localised pressure and sensitivity in different areas of the hand as well as to provide adequate dexterity for fine manipulative tasks. The results showed that the first prototype glove and the barehanded condition were comparable and provided better dexterity and higher handgrip strength than double thickness gloves. The results support the hypothesis that selective thickness in different areas of the hand could be applied by glove manufacturers to improve the glove design, so that it can protect the hands from the environment and at the same time allow optimal hand performance capabilities.

  7. Ballast system for maintaining constant pressure in a glove box

    NASA Technical Reports Server (NTRS)

    Shlichta, Paul J. (Inventor)

    1990-01-01

    A ballast system for a glove box including a fixed platform on which is mounted an inflatable bag on top of which resides a cover and a weight. The variable gas volume of the inflatable bag communicates with that of the glove box via a valved tube. The weight and gas volume are selected to maintain a relatively constant pressure in the glove box despite variations in the glove box volume while avoiding the use of complicated valving apparatus.

  8. Improved Chemical Protective Gloves Using Elastomeric Nanocomposites

    DTIC Science & Technology

    2006-02-06

    40000 50000 60000 70000 80000 90000 100000 0 3 6 9 12 15 18 21 24 Hours ng /c m ^2 Best Butyl HD thermaprene HD MAPA neo HD Ansell TNT HD Ansell Solvex HD...Mustard Gas Permeation Property Comparisons Glove Thicknessa Lag Timeb Slopec D/Dbutyl S/Sbutyl P/Pbutyl Butyl rubber 30 15 2200 Neoprene ( MAPA ) 30...ngrams/m2-hour). Starting with the calculated diffusion constant and solubility for the 30 mil MAPA neoprene glove [12] we show the calculated flux

  9. The effects of vibration-reducing gloves on finger vibration.

    PubMed

    Welcome, Daniel E; Dong, Ren G; Xu, Xueyan S; Warren, Christopher; McDowell, Thomas W

    2014-01-01

    Vibration-reducing (VR) gloves have been used to reduce the hand-transmitted vibration exposures from machines and powered hand tools but their effectiveness remains unclear, especially for finger protection. The objectives of this study are to determine whether VR gloves can attenuate the vibration transmitted to the fingers and to enhance the understanding of the mechanisms of how these gloves work. Seven adult male subjects participated in the experiment. The fixed factors evaluated include hand force (four levels), glove condition (gel-filled, air bladder, no gloves), and location of the finger vibration measurement. A 3-D laser vibrometer was used to measure the vibrations on the fingers with and without wearing a glove on a 3-D hand-arm vibration test system. This study finds that the effect of VR gloves on the finger vibration depends on not only the gloves but also their influence on the distribution of the finger contact stiffness and the grip effort. As a result, the gloves increase the vibration in the fingertip area but marginally reduce the vibration in the proximal area at some frequencies below 100 Hz. On average, the gloves reduce the vibration of the entire fingers by less than 3% at frequencies below 80 Hz but increase at frequencies from 80 to 400 Hz. At higher frequencies, the gel-filled glove is more effective at reducing the finger vibration than the air bladder-filled glove. The implications of these findings are discussed.

  10. 30 CFR 77.606-1 - Rubber gloves; minimum requirements.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 30 Mineral Resources 1 2012-07-01 2012-07-01 false Rubber gloves; minimum requirements. 77.606-1... COAL MINES Trailing Cables § 77.606-1 Rubber gloves; minimum requirements. (a) Rubber gloves (lineman's... be used and tested in accordance with the provisions of §§ 77.704-6 through 77.704-8. (b)...

  11. 30 CFR 77.606-1 - Rubber gloves; minimum requirements.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 30 Mineral Resources 1 2011-07-01 2011-07-01 false Rubber gloves; minimum requirements. 77.606-1... COAL MINES Trailing Cables § 77.606-1 Rubber gloves; minimum requirements. (a) Rubber gloves (lineman's... be used and tested in accordance with the provisions of §§ 77.704-6 through 77.704-8. (b)...

  12. 30 CFR 77.606-1 - Rubber gloves; minimum requirements.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 30 Mineral Resources 1 2010-07-01 2010-07-01 false Rubber gloves; minimum requirements. 77.606-1... COAL MINES Trailing Cables § 77.606-1 Rubber gloves; minimum requirements. (a) Rubber gloves (lineman's... be used and tested in accordance with the provisions of §§ 77.704-6 through 77.704-8. (b)...

  13. 30 CFR 77.606-1 - Rubber gloves; minimum requirements.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 30 Mineral Resources 1 2014-07-01 2014-07-01 false Rubber gloves; minimum requirements. 77.606-1... COAL MINES Trailing Cables § 77.606-1 Rubber gloves; minimum requirements. (a) Rubber gloves (lineman's... be used and tested in accordance with the provisions of §§ 77.704-6 through 77.704-8. (b)...

  14. 30 CFR 77.606-1 - Rubber gloves; minimum requirements.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 30 Mineral Resources 1 2013-07-01 2013-07-01 false Rubber gloves; minimum requirements. 77.606-1... COAL MINES Trailing Cables § 77.606-1 Rubber gloves; minimum requirements. (a) Rubber gloves (lineman's... be used and tested in accordance with the provisions of §§ 77.704-6 through 77.704-8. (b)...

  15. 21 CFR 880.6250 - Patient examination glove.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 21 Food and Drugs 8 2010-04-01 2010-04-01 false Patient examination glove. 880.6250 Section 880... Devices § 880.6250 Patient examination glove. (a) Identification. A patient examination glove is a... contamination between patient and examiner. (b) Classification. Class I (general controls)....

  16. Durable Tactile Glove for Human or Robot Hand

    NASA Technical Reports Server (NTRS)

    Butzer, Melissa; Diftler, Myron A.; Huber, Eric

    2010-01-01

    A glove containing force sensors has been built as a prototype of tactile sensor arrays to be worn on human hands and anthropomorphic robot hands. The force sensors of this glove are mounted inside, in protective pockets; as a result of this and other design features, the present glove is more durable than earlier models.

  17. Detection of purple sulfur bacteria in purple and non-purple dairy wastewaters

    USDA-ARS?s Scientific Manuscript database

    Purple sulfur bacteria (PSB) in livestock wastewaters use reduced sulfur compounds and simple volatile organics as growth factors. As a result, the presence of PSB in manure storage ponds or lagoons is often associated with reduced odors. In this study, our objectives were to use molecular- and cult...

  18. "The dirty hand in the latex glove": a study of hand hygiene compliance when gloves are worn.

    PubMed

    Fuller, Christopher; Savage, Joanne; Besser, Sarah; Hayward, Andrew; Cookson, Barry; Cooper, Ben; Stone, Sheldon

    2011-12-01

    Wearing of gloves reduces transmission of organisms by healthcare workers' hands but is not a substitute for hand hygiene. Results of previous studies have varied as to whether hand hygiene is worse when gloves are worn. Most studies have been small and used nonstandardized assessments of glove use and hand hygiene. We sought to observe whether gloves were worn when appropriate and whether hand hygiene compliance differed when gloves were worn. Observational study. Healthcare workers in 56 medical or care of the elderly wards and intensive care units in 15 hospitals across England and Wales. We observed hand hygiene and glove usage (7,578 moments for hand hygiene) during 249 one-hour sessions. Observers also recorded whether gloves were or were not worn for individual contacts. Gloves were used in 1,983 (26.2%) of the 7,578 moments for hand hygiene and in 551 (16.7%) of 3,292 low-risk contacts; gloves were not used in 141 (21.1%) of 669 high-risk contacts. The rate of hand hygiene compliance with glove use was 41.4% (415 of 1,002 moments), and the rate without glove use was 50.0% (1,344 of 2,686 moments). After adjusting for ward, healthcare worker type, contact risk level, and whether the hand hygiene opportunity occurred before or after a patient contact, glove use was strongly associated with lower levels of hand hygiene (adjusted odds ratio, 0.65 [95% confidence interval, 0.54-0.79]; P < .0001). The rate of glove usage is lower than previously reported. Gloves are often worn when not indicated and vice versa. The rate of compliance with hand hygiene was significantly lower when gloves were worn. Hand hygiene campaigns should consider placing greater emphasis on the World Health Organization indications for gloving and associated hand hygiene. National Research Register N0256159318.

  19. Wearing ambidextrous vinyl gloves does not impair manual dexterity.

    PubMed

    Drabek, Tomas; Boucek, Charles D; Buffington, Charles W

    2013-01-01

    Universal precautions mandate that health care workers wear gloves to prevent the unintended spread of bloodborne pathogens. Gloves may affect manual dexterity, generally delaying task completion. Our previous study showed that wearing the wrong size latex surgical glove degraded manual dexterity. The use of non-sterile and non-latex gloves may limit certain risks and be more cost-effective. However, such gloves may produce different results. We hypothesized that ambidextrous vinyl examination gloves would degrade manual dexterity compared with bare hands. We studied 20 random subjects from a medical environment. Subjects performed a standard battery of Grooved Pegboard tasks while bare-handed, wearing ambidextrous non-sterile vinyl gloves that were their preferred size, a size too small, and a size too large. The order was randomized with a Latin Square design to minimize the effects of time, boredom, and fatigue on the subjects. Subjects were also invited to comment on the fit of different size gloves. Wearing vinyl gloves of both the preferred size and a size up or down failed to affect manual dexterity vs. bare hands on time to insert pegs, and pegs dropped during insertion or removal. In contrast, the time to remove pegs was reduced by wearing preferred size vinyl gloves compared with performing the task with bare hands (P<0.05). Subjects reported a generally poor fit in all sizes. Vinyl gloves that were too small caused significant hand discomfort. Vinyl gloves surprisingly do not degrade manual dexterity even when worn in ill-fitting sizes. Wearing a preferred size vinyl glove vs. bare hands may improve dexterity in selected tasks. Choosing a comfortable, large size seems the best strategy when the preferred size is unavailable. Thinner vinyl gloves may improve grip and may not degrade touch as much as latex surgical gloves and may thus represent a reasonable choice for selected tasks.

  20. Bacterial migration through punctured surgical gloves under real surgical conditions

    PubMed Central

    2010-01-01

    Background The aim of this study was to confirm recent results from a previous study focussing on the development of a method to measure the bacterial translocation through puncture holes in surgical gloves under real surgical conditions. Methods An established method was applied to detect bacterial migration from the operating site through the punctured glove. Biogel™ double-gloving surgical gloves were used during visceral surgeries over a 6-month period. A modified Gaschen-bag method was used to retrieve organisms from the inner glove, and thus-obtained bacteria were compared with micro-organisms detected by an intra-operative swab. Results In 20 consecutive procedures, 194 gloves (98 outer gloves, 96 inner gloves) were examined. The rate of micro-perforations of the outer surgical glove was 10% with a median wearing time of 100 minutes (range: 20-175 minutes). Perforations occurred in 81% on the non-dominant hand, with the index finger most frequently (25%) punctured. In six cases, bacterial migration could be demonstrated microbiologically. In 5% (5/98) of outer gloves and in 1% (1/96) of the inner gloves, bacterial migration through micro-perforations was observed. For gloves with detected micro-perforations (n = 10 outer layers), the calculated migration was 50% (n = 5). The minimum wearing time was 62 minutes, with a calculated median wearing time of 71 minutes. Conclusions This study confirms previous results that bacterial migration through unnoticed micro-perforations in surgical gloves does occur under real practical surgical conditions. Undetected perforation of surgical gloves occurs frequently. Bacterial migration from the patient through micro-perforations on the hand of surgeons was confirmed, limiting the protective barrier function of gloves if worn over longer periods. PMID:20594293

  1. COLOR PRESCRIPTION FORM FOR COSMETIC GLOVES

    DTIC Science & Technology

    A technique is described for achieving more custom-like coloring of cosmetic gloves. The method involves the use of a color prescription form which...can be used to describe in greater detail the characteristics of those portions of the human hand of greater cosmetic significance.

  2. Improved flexibility of an EVA glove

    NASA Technical Reports Server (NTRS)

    Eggeman, G. W.; Held, J. J.

    1986-01-01

    A student design contest was held between four universities. The project was to improve the flexibility of the NASA extra-vehicular activities (EVA) glove with the internal pressure increased from 4 psi to 8 psi. The Kansas State University team used an experimental design methodology and an industrial management scheme. This approach succeeded in making Kansas State University the winner of the competition.

  3. Methyl methacrylate permeability of dental and industrial gloves.

    PubMed

    Thomas, Sebastian; Padmanabhan, T V

    2009-01-01

    Our study was undertaken to measure the amount and time it took for methyl methacrylate monomer (MMA) to permeate latex, vinyl and industrial neoprene gloves and to compare the results to obtain a rating of the permeability of each of the gloves studied to MMA. The monomer, permeated under static conditions, was measured using a spectrophotometer. Latex and vinyl clinical gloves became permeable to MMA in a very short amount of time. Neoprene industrial gloves remained impervious for 25 minutes. Dentists and dental technicians should be aware of the toxic effects of MMA and understand that clinical gloves do not afford protection from MMA.

  4. High Risk of Surgical Glove Perforation From Surgical Rotatory Instruments.

    PubMed

    Goldman, Ashton H; Haug, Emanuel; Owen, John R; Wayne, Jennifer S; Golladay, Gregory J

    2016-11-01

    Surgical gloves can be damaged during the course of a procedure, which can place the surgeon and patient at risk. Glove perforation may not always be readily apparent, and determining the risk factors for glove perforation can aid the surgeon in deciding when a glove change is advisable. Time of wear and needle sticks have been well studied; however, other mechanisms including mechanical stress from surgical equipment have had limited evaluation to date. We evaluated the risk of glove perforation in gloves that were caught in a surgical rotatory device (such as drills and reamers). The aims of our study were (1) to determine the percentage of undetected microperforations after entanglement on a rotatory tool during orthopaedic procedures, (2) to determine which kinds of rotatory devices most commonly cause such microperforations, and (3) to assess whether time of wear had an effect on the risk of perforation. From July 2014 to September 2015, 33 gloves were obtained from all orthopaedic subspecialties at our Level I trauma center if they were caught in a rotatory device greater than one revolution. Time of glove wear and location of the glove that was caught in a rotatory device were recorded. After an evaluation for macroperforations (≥ 5 mm), the gloves were evaluated for microperforations (< 5 mm) via the American Society for Testing and Materials (ASTM) one-liter load test. Time of wear was compared among gloves with macroperforations, microperforations, and no perforations. The 33 gloves obtained came from 33 procedures. Seventeen of 33 (52 %) gloves had perforations. Seven of the 17 perforated gloves had macroperforations while 10 had microperforations. Eleven of 33 entanglements were caught by drills, nine by reamers, eight by K-wires, and the remaining five gloves were caught by various other instruments. Eight of 17 perforations were caused by drills, three by reamers, three by K-wires, and three by various other instruments. The average time of wear was

  5. Purple martins in oak woodlands

    Treesearch

    Brian D. C. Williams

    2002-01-01

    Purple martins are cavity-nesting swallows that once nested fairly widely in California’s oak woodlands but are now rare in that habitat. The old oaks of the Tehachapi Range (southern Sierra Nevada) may now host the last martins that nest in oak woodlands, with approximately 100-200 pairs or about 15 percent of the California population. In summer of 2000, we found 57...

  6. Spacesuit glove manufacturing enhancements through the use of advanced technologies

    NASA Technical Reports Server (NTRS)

    Cadogan, David; Bradley, David; Kosmo, Joseph

    1993-01-01

    The sucess of astronauts performing extravehicular activity (EVA) on orbit is highly dependent upon the performance of their spacesuit gloves.A study has recently been conducted to advance the development and manufacture of spacesuit gloves. The process replaces the manual techniques of spacesuit glove manufacture by utilizing emerging technologies such as laser scanning, Computer Aided Design (CAD), computer generated two-dimensional patterns from three-dimensionl surfaces, rapid prototyping technology, and laser cutting of materials, to manufacture the new gloves. Results of the program indicate that the baseline process will not increase the cost of the gloves as compared to the existing styles, and in production, may reduce the cost of the gloves. perhaps the most important outcome of the Laserscan process is that greater accuracy and design control can be realized. Greater accuracy was achieved in the baseline anthropometric measurement and CAD data measurement which subsequently improved the design feature. This effectively enhances glove performance through better fit and comfort.

  7. Spacesuit glove manufacturing enhancements through the use of advanced technologies

    NASA Astrophysics Data System (ADS)

    Cadogan, David; Bradley, David; Kosmo, Joseph

    The sucess of astronauts performing extravehicular activity (EVA) on orbit is highly dependent upon the performance of their spacesuit gloves.A study has recently been conducted to advance the development and manufacture of spacesuit gloves. The process replaces the manual techniques of spacesuit glove manufacture by utilizing emerging technologies such as laser scanning, Computer Aided Design (CAD), computer generated two-dimensional patterns from three-dimensionl surfaces, rapid prototyping technology, and laser cutting of materials, to manufacture the new gloves. Results of the program indicate that the baseline process will not increase the cost of the gloves as compared to the existing styles, and in production, may reduce the cost of the gloves. perhaps the most important outcome of the Laserscan process is that greater accuracy and design control can be realized. Greater accuracy was achieved in the baseline anthropometric measurement and CAD data measurement which subsequently improved the design feature. This effectively enhances glove performance through better fit and comfort.

  8. Purple Pelisse: A specialty fingerling potato with purple skin and flesh and medium specific gravity

    USDA-ARS?s Scientific Manuscript database

    Purple Pelisse is a specialty fingerling potato with purple skin and dark purple flesh. It has medium maturity and sets a large number of smooth, small, fingerling-shaped tubers. The tubers have medium specific gravity and high levels of antioxidants. This potato variety is mainly intended for the f...

  9. Do clinical examination gloves provide adequate electrical insulation for safe hands-on defibrillation? I: Resistive properties of nitrile gloves.

    PubMed

    Deakin, Charles D; Lee-Shrewsbury, Victoria; Hogg, Kitwani; Petley, Graham W

    2013-07-01

    Uninterrupted chest compressions are a key factor in determining resuscitation success. Interruptions to chest compression are often associated with defibrillation, particularly the need to stand clear from the patient during defibrillation. It has been suggested that clinical examination gloves may provide adequate electrical resistance to enable safe hands-on defibrillation in order to minimise interruptions. We therefore examined whether commonly used nitrile clinical examination gloves provide adequate resistance to current flow to enable safe hands-on defibrillation. Clinical examination gloves (Kimberly Clark KC300 Sterling nitrile) worn by members of hospital cardiac arrest teams were collected immediately following termination of resuscitation. To determine the level of protection afforded by visually intact gloves, electrical resistance across the glove was measured by applying a DC voltage across the glove and measuring subsequent resistance. Forty new unused gloves (control) were compared with 28 clinical (non-CPR) gloves and 128 clinical (CPR) gloves. One glove in each group had a visible tear and was excluded from analysis. Control gloves had a minimum resistance of 120 kΩ (median 190 kΩ) compared with 60 kΩ in clinical gloves (both CPR (median 140 kΩ) and non-CPR groups (median 160 kΩ)). Nitrile clinical examination gloves do not provide adequate electrical insulation for the rescuer to safely undertake 'hands-on' defibrillation and when exposed to the physical forces of external chest compression, even greater resistive degradation occurs. Further work is required to identify gloves suitable for safe use for 'hands-on' defibrillation. Copyright © 2013 Elsevier Ireland Ltd. All rights reserved.

  10. [A case of Williams syndrome who exhibited fetishism].

    PubMed

    Noguchi, Masayuki; Kato, Satoshi

    2004-01-01

    Williams syndrome is a rare congenital disease in which the etiological locus is a micro-deletion in chromosome 7. Here, we describe the case of a 22-year-old male who was diagnosed with Williams syndrome at the age of 3 years. As a child, the patient exhibited patterns of behavior characteristic of this syndrome including hyperactivity, attention deficit, and over-friendliness. He also showed persistent interest in construction vehicles, playgrounds, and gloves. He became interested in gloves after watching a television program in which the heroine fought her enemies while wearing gloves. Watching pornographic movies allowed him to attach strong sexual significance to gloves when he was 19 years old. Since that time, he has assaulted women wearing gloves four times to rob them of the gloves. The current paper discusses both the role of the cognitive profile unique to Williams syndrome and that of environmental factors in the development of fetishism in this case.

  11. Therapy gloves for patients with rheumatoid arthritis: a review

    PubMed Central

    Troynikov, Olga; Massy-Westropp, Nicola

    2014-01-01

    Rheumatoid arthritis is a chronic inflammatory disease that causes pain, joint stiffness and swelling leading to impaired hand function and difficulty with daily activities. Wearing therapy gloves has been recommended by occupational therapists as one of the alternative treatment methods for rheumatoid arthritis. This study aims to review the available literature on the effects of wearing therapy gloves on patients’ hand function and symptoms as well as to discuss the attributes of gloves that might influence the glove performance. An electronic databases search of MEDLINE, Physiotherapy Evidence Database, Occupational Therapy Systematic Evaluation of Evidence, Wiley Online Library, ScienceDirect and Cochrane Central Register of Controlled Trial was performed. Eight articles met the inclusion criteria, and covered seven clinical trials and one case study. Seven outcome measures were identified from the included studies and were then classified into two categories: hand function and hand symptoms. The hand symptoms such as pain, stiffness and swelling improve substantially when the therapy gloves are used. However, marginal or no improvement in hand function (with the exception of grip strength) linked to the use of therapy gloves is being reported. Further research is needed to quantify the effectiveness of therapy gloves, especially in improvement of hand function and in patients’ interest in wearing therapy gloves. Furthermore, future studies should include parameters which might influence therapy gloves’ performance, such as duration of trials, interface pressure generated by the gloves on the underlying skin and tissue, glove fit and construction, as well as thermophysiological comfort. PMID:25435925

  12. [Old and new types of sanitary gloves: what has improved?].

    PubMed

    Belleri, L; Crippa, Michela

    2008-01-01

    During the eighties a large increase in latex gloves production was observed because of the high demand of gloves in health care settings. In this period a low compliance to minimal quality standard was detected and the poor glove quality was associated with an increase of both irritant and allergic glove-related diseases. Since the second half of nineties health care workers and manufacturers paid more attention to these problems and a trend to a gradual, even if slow, quality improvement was observed. Most frequently powder-free gloves and synthetic gloves were offered on the market. The aim of this study was to highlight what has improved about materials and types of sanitary gloves during the last ten years. The information are based on a review of the scientific literature and practical experiences. Today a large selection of gloves made of different materials are available and they should be addressed to specific tasks. The review of the scientific literature and the analysis of many technical sheets provided by the manufacturers pointed out a trend to a better latex gloves quality (less chemical additives and generally a lower total protein content); sometimes data about a lower extractable latex allergens content are also available. Unfortunately detailed information on glove composition are not usually provided by the manufacturers; purchasers should require the manufacturing company to give comprehensive information and verify their reliability. Moreover the regulation in force should be adapted to higher quality standards. Powder-free and synthetic gloves consumption has improved but the use of synthetic rubber gloves should be further enhanced since some materials (e.g. neoprene and nitrile rubber) have a good biocompatibility and seem to have physical properties and protective efficacy similar to latex. Moreover allergic reactions to synthetic gloves (some chemical additives) are only occasional.

  13. F-14 VSTFE - gloves #1 and #2

    NASA Image and Video Library

    1987-04-22

    NASA 834, an F-14 Navy Tomcat, seen here in flight, was used at Dryden in 1986 and 1987 in a program known as the Variable-Sweep Transition Flight Experiment (VSTFE). This program explored laminar flow on variable sweep aircraft at high subsonic speeds. An F-14 aircraft was chosen as the carrier vehicle for the VSTFE program primarily because of its variable-sweep capability, Mach and Reynolds number capability, availability, and favorable wing pressure distribution. The variable sweep outer-panels of the F-14 aircraft were modified with natural laminar flow gloves to provide not only smooth surfaces but also airfoils that can produce a wide range of pressure distributions for which transition location can be determined at various flight conditions and sweep angles. Glove I, seen here installed on the upper surface of the left wing, was a "cleanup" or smoothing of the basic F-14 wing, while Glove II was designed to provide specific pressure distributions at Mach 0.7. Laminar flow research continued at Dryden with a research program on the NASA 848 F-16XL, a laminar flow experiment involving a wing-mounted panel with millions of tiny laser cut holes drawing off turbulent boundary layer air with a suction pump.

  14. Dexterity testing of chemical-defense gloves. Technical report

    SciTech Connect

    Robinette, K.M.; Ervin; Zehner, G.F.

    1986-05-01

    Chemical-defense gloves (12.5-mil Epichlorohydron/Butyl, 14-mil Epichlorohydron/Butyl, and 7-mil Butyl with Nomex overgloves) were subjected to four dexterity tests (O'Connor Finger Dexterity Test, Pennsylvania Bi-Manual Worksample-Assembly, Minnesota Rate of Manipulation Turning, and the Crawford Small Test). Results indicated that subjects performances were most impaired by the 7-mil Butyl with Nomex overglove. Though differences between the other three gloved conditions were not always statistically significant, subjects performed silghtly better while wearing the Epichlorohydron/Butyl gloves, no matter which thickness, than they did while wearing the 15-mil butyl gloves. High negative correlation between anthropometry and gloved tests scores of subjects suggested that poor glove fit may also have affected subjects performances.

  15. Smart glove: hand master using magnetorheological fluid actuators

    NASA Astrophysics Data System (ADS)

    Nam, Y. J.; Park, M. K.; Yamane, R.

    2007-12-01

    In this study, a hand master using five miniature magneto-rheological (MR) actuators, which is called 'the smart glove', is introduced. This hand master is intended to display haptic feedback to the fingertip of the human user interacting with any virtual objects in virtual environment. For the smart glove, two effective approaches are proposed: (i) by using the MR actuator which can be considered as a passive actuator, the smart glove is made simple in structure, high in power, low in inertia, safe in interface and stable in haptic feedback, and (ii) with a novel flexible link mechanism designed for the position-force transmission between the fingertips and the actuators, the number of the actuator and the weight of the smart glove can be reduced. These features lead to the improvement in the manipulability and portability of the smart glove. The feasibility of the constructed smart glove is verified through basic performance evaluation.

  16. Evaluating Utility Gloves as a Potential Reservoir for Pathogenic Bacteria.

    PubMed

    Grant, Kathy L; Naber, E Donald; Halteman, William A

    2015-08-01

    This pilot study sought to determine the rate and degree to which gram-negative Klebsiella pneumoniae, Escherichia coli and Pseudomonas aeruginosa and gram-positive Staphylococcus aureus occurred on the inside of utility gloves used at University of Maine at Augusta, Dental Health Programs' dental hygiene clinic. Five steam autoclave utility gloves were randomly selected to serve as control and a convenience sample of 10 used utility gloves were selected from the sterilization area. A sample was collected from a predetermined surface area from the inside of each steam autoclave utility glove and used utility glove. Each sample was used to inoculate a Petri plate containing 2 types of culture media. Samples were incubated at 37° C for 30 to 36 hours in aerobic conditions. Colony forming units (CFU) were counted. Confidence intervals (CI) estimated the rate of contamination with gram-negative K. pneumoniae, E. coli and P. aeruginosa on the inside of steam autoclave utility gloves to be n=33 95% CL [0.000, 0.049], used utility gloves to be n=70, 95% CL [0.000, 0.0303]. Data estimated the rate of contamination with gram-positive S. aureus on the inside of steam autoclave utility gloves to be n=35, 95% CL [0.233, 0.530], used utility gloves to be n=70, 95% CL [0.2730, 0.4975]. Culture media expressed a wide range of CFU from 0 to over 200. The risk of utility glove contamination with gram-negative bacteria is likely low. The expressed growth of S. aureus from steam autoclave utility gloves controls raises questions about the effectiveness and safety of generally accepted sterilization standards for the governmentally mandated use of utility gloves. Copyright © 2015 The American Dental Hygienists’ Association.

  17. Glove Testing for Performance Against Flying Glass Shards

    DTIC Science & Technology

    2014-09-01

    detonation . A range of gloves were selected with low, medium, and high cut resistance all of varying dexterity. The goal was to determine if gloves with...against glass from accidental detonation or explosion in a glass chemical apparatus or beaker, a series of gloves were purchased and tested. The main...the fingers, would offer the best protection for the wearer. Please note that full protection from the detonation or blast overpressure was not the

  18. Development of Wireless RFID Glove for Various Applications

    NASA Astrophysics Data System (ADS)

    Lee, Changwon; Kim, Minchul; Park, Jinwoo; Oh, Jeonghoon; Eom, Kihwan

    Radio Frequency Identification is increasingly popular technology with many applications. The majority of applications of RFID are supply-chain management. In this paper, we proposed the development of wireless RFID Glove for various applications in real life. Proposed wireless RFID glove is composed of RFID reader of 13.56 MHz and RF wireless module. Proposed Gloves were applied to two applications. First is the interactive leaning and second is Meal aid system for blind people. The experimental results confirmed good performances.

  19. Allergen profiles of natural rubber latex (NRL) proteins on gloves and glove powders.

    PubMed

    Tomazic-Jezic, Vesna J; Sanchez, B A

    2005-01-01

    The contributing role of glove powder in sensitization to natural rubber latex (NRL) proteins has been well documented in laboratory studies and through clinical evaluations. However, the quantitative relationship of the respiratory and topical exposures in the sensitization process remains unknown because the relative levels of protein on the glove powders in relation to the total levels of protein on NRL gloves have not been determined. In NRL allergens--Hev b 1, Hev b 3, Hev b 5, and Hev b 6.02--on randomly selected surgical and examination NRL gloves. We also examined the binding pattern of the four allergens to several glove powders that showed a different affinity to NRL proteins. The level of powder-bound protein was determined by the ELISA Inhibition Assay (ASTM D6499 standard method). Two cross-linked corn starch powders, one sample of cooking corn starch and one oat starch sample, were exposed to ammoniated (AL) or nonammoniated (NAL) raw NRL protein extracts. The levels of individual allergens were determined using the NRL allergen kit. In the NRL glove extracts we observed a wide range in the total allergen levels and a great diversity in the proportion of the four allergens. On the other hand, the evaluated starches had similar ratios of four individual allergens, regardless of the differences in their total allergen levels. The exposure of starches to NRL proteins with different allergen profiles did not affect the allergen ratio. All samples demonstrated a selective affinity for binding Hev b 1 and Hev b 5 allergens and a lesser affinity for the Hev b 6.02 allergen. Allergen Hev b 6.02 made up about 60% of the total allergen in the NAL extract, but only 12-30% of Hev b 6.02 was bound to starches. In contrast, there was only 3-7% of Hev b 1 allergen in the NAL extract, but powders had 35-45% of Hev b 1. These findings indicate that allergenic properties of NRL gloves and respective glove powders may be different.

  20. Computational Optimization of a Natural Laminar Flow Experimental Wing Glove

    NASA Technical Reports Server (NTRS)

    Hartshom, Fletcher

    2012-01-01

    Computational optimization of a natural laminar flow experimental wing glove that is mounted on a business jet is presented and discussed. The process of designing a laminar flow wing glove starts with creating a two-dimensional optimized airfoil and then lofting it into a three-dimensional wing glove section. The airfoil design process does not consider the three dimensional flow effects such as cross flow due wing sweep as well as engine and body interference. Therefore, once an initial glove geometry is created from the airfoil, the three dimensional wing glove has to be optimized to ensure that the desired extent of laminar flow is maintained over the entire glove. TRANAIR, a non-linear full potential solver with a coupled boundary layer code was used as the main tool in the design and optimization process of the three-dimensional glove shape. The optimization process uses the Class-Shape-Transformation method to perturb the geometry with geometric constraints that allow for a 2-in clearance from the main wing. The three-dimensional glove shape was optimized with the objective of having a spanwise uniform pressure distribution that matches the optimized two-dimensional pressure distribution as closely as possible. Results show that with the appropriate inputs, the optimizer is able to match the two dimensional pressure distributions practically across the entire span of the wing glove. This allows for the experiment to have a much higher probability of having a large extent of natural laminar flow in flight.

  1. Extra-Vehicular Activity (EVA) glove evaluation test protocol

    NASA Technical Reports Server (NTRS)

    Hinman-Sweeney, E. M.

    1994-01-01

    One of the most critical components of a space suit is the gloves, yet gloves have traditionally presented significant design challenges. With continued efforts at glove development, a method for evaluating glove performance is needed. This paper presents a pressure-glove evaluation protocol. A description of this evaluation protocol, and its development is provided. The protocol allows comparison of one glove design to another, or any one design to bare-handed performance. Gloves for higher pressure suits may be evaluated at current and future design pressures to drive out differences in performance due to pressure effects. Using this protocol, gloves may be evaluated during design to drive out design problems and determine areas for improvement, or fully mature designs may be evaluated with respect to mission requirements. Several different test configurations are presented to handle these cases. This protocol was run on a prototype glove. The prototype was evaluated at two operating pressures and in the unpressurized state, with results compared to bare-handed performance. Results and analysis from this test series are provided, as is a description of the configuration used for this test.

  2. Handling chemotherapy drugs-Do medical gloves really protect?

    PubMed

    Landeck, Lilla; Gonzalez, Ernesto; Koch, Olaf Manfred

    2015-10-15

    Due to their potential mutagenic, carcinogenic and teratogenic effects occupational exposure to chemotherapy drugs should be kept to a minimum. Utilization of personnel protective devices, especially the use of protective medical gloves, is a mainstay to avoid skin contact. The choice of appropriate gloves is of outstanding importance. For optimal protection in the oncology setting it is essential to establish general guidelines evaluating appropriate materials and defining quality standards. Establishing these guidelines can facilitate better handling and avoid potential hazards and late sequelae. In Europe there are no specific requirements or test methodologies for medical gloves used in the oncology environment. The implementation of uniform standards for gloves used while handling chemotherapy drugs would be desirable. In contrast, in the US medical gloves used to handle chemotherapy drugs have to fulfill requirements according to the ASTM International (American Society of Testing and Materials) standard D 6978-05. Nitrile or natural rubber latex is a preferred basic glove material, while vinyl is considered inappropriate because of its generally increased permeability. For extended exposure to chemotherapy drugs, double gloving, the use of thicker gloves and the frequent change of gloves increases their protective power.

  3. Initial Work Toward a Robotically Assisted EVA Glove

    NASA Technical Reports Server (NTRS)

    Rogers, J.; Peters, B.; McBryan, E.; Laske, E.

    2016-01-01

    The Space Suit RoboGlove is a device designed to provide additional grasp strength or endurance for an EVA crew member since gloved hand performance is a fraction of what the unencumbered human hand can achieve. There have been past efforts to approach this problem by employing novel materials and construction techniques to the glove design, as well as integrating powered assistance devices. This application of the NASA/GM RoboGlove technology uses a unique approach to integrate the robotic actuators and sensors into a Phase VI EVA glove. This design provides grasp augmentation to the glove user while active, but can also function as a normal glove when disabled. Care was taken to avoid adding excessive bulk to the glove or affecting tactility by choosing low-profile sensors and extrinsically locating the actuators. Conduits are used to guide robotic tendons from linear actuators, across the wrist, and to the fingers. The second generation of the SSRG includes updated electronics, sensors, and actuators to improve performance. The following discusses the electromechanical design, softgoods integration, and control system of the SSRG. It also presents test results from the first integration of a powered mobility element onto a space suit, the NASA Mark III. Early results show that sensor integration did not impact tactile feedback in the glove and the actuators show potential for reduction in grasp fatigue over time.

  4. The use of various handwashing agents to decontaminate gloved hands.

    PubMed

    Douglas, C W; Millward, T A; Clark, A

    1989-07-22

    It has been suggested that gloved hands could be washed between patient treatments in the dental surgery and gloves re-used, provided they are undamaged. A series of experiments are described, which evaluate the effectiveness of four handwashing agents at removing defined bacterial inoculae from two types of latex rubber glove, a dedicated dental procedure glove (Regent Biogel D) which has a rough surface and a smooth-surfaced examination glove (Microtouch). The four agents tested were povidone iodine (Betadine), chlorhexidine (Hibiscrub), 60% iso-propyl alcohol, and a detergent triclosan preparation (Kleenex washcream). The Biogel D gloves required slightly shorter washing times to eradicate organisms than the Microtouch gloves. It was found that washing with water alone reduced the organisms on gloves by 300-1000-fold, but a minimum washing time of 20 seconds with povidone iodine or chlorhexidine was required to eradicate all the organisms inoculated, except bacterial spores, from both glove surfaces. Povidone-iodine and chlorhexidine were more effective washing agents than iso-propyl alcohol and triclosan soap.

  5. A randomised trial of the durability of non-allergenic latex-free surgical gloves versus latex gloves.

    PubMed Central

    Newsom, S. W.; Smith, M. O.; Shaw, P.

    1998-01-01

    A prospective randomised trial was performed to compare the robustness of a new non-latex surgical glove with a standard latex glove when worn by four general surgeons in a district general hospital. Gloves were retrieved after surgery and examined using the European Standard Test for punctures. The overall puncture rate was 10.1%, and there was no significant difference in the rates between the two types of glove, although punctures in the non-latex glove tended to be larger and more readily noted by the wearer. The increase in latex allergy among health care staff dictates the need for gloves made from other materials, which may also be useful for operations on latex-allergic patients. PMID:9771234

  6. Permeability of latex and polyvinyl chloride gloves to 20 antineoplastic drugs.

    PubMed

    Laidlaw, J L; Connor, T H; Theiss, J C; Anderson, R W; Matney, T S

    1984-12-01

    Permeability of latex and polyvinyl chloride (PVC) gloves to 20 injectable antineoplastic drugs was studied. Four types of gloves were evaluated: latex surgical gloves, latex examination gloves, and PVC gloves in two thicknesses. Each glove material was exposed to each drug for 90 minutes, and permeation was tested using a mutagenicity assay. Individual fingertips of thin PVC gloves and latex surgical gloves were tested for permeability at five time points (2-30 minutes) using a doxorubicin coloration assay. All drugs permeated the thin PVC gloves. Latex surgical gloves were definitely permeable to two drugs (carmustine and thiotepa) and exhibited borderline permeability to mechlorethamine hydrochloride. The thick PVC gloves were definitely permeable to four drugs (carmustine, thiotepa, mechlorethamine hydrochloride, and daunorubicin hydrochloride) and exhibited borderline permeability to two drugs (doxorubicin and mercaptopurine). The latex examination gloves were permeable to carmustine, thiotepa, mechlorethamine hydrochloride, and cyclophosphamide. Doxorubicin permeation of individual fingertips of thin PVC gloves varied in time and amount. Doxorubicin did not permeate the latex surgical glove material, but testing with thiotepa showed that individual fingertips of this material also varied in permeability. Glove thickness was a major determinant of permeability; latex surgical gloves were the least permeable and thin PVC gloves the most permeable to the antineoplastic drugs tested. Within individual gloves and glove types, time and amount of permeation were not uniform.

  7. Glove use among hairdressers: difficulties in the correct use of gloves among hairdressers and the effect of education.

    PubMed

    Oreskov, Katia W; Søsted, Heidi; Johansen, Jeanne D

    2015-06-01

    Hand eczema is frequent among Danish hairdressers, and they are advised to use gloves as protection. However, studies indicate that a significant proportion use gloves inappropriately. To determine whether hairdressers and apprentices use protective gloves in the correct way, and to determine whether a demonstration of correct use could cause an improvement. Forty-three hairdressers and apprentices were asked to perform a hair wash while wearing gloves. The shampoo used was contaminated with an ultraviolet (UV) trace material. Two rounds of hair washing were carried out by each person, interrupted by a demonstration of how to use gloves correctly. Photographs were taken to compare UV contamination before and after the demonstration. All of the participants (100%) had their hands contaminated during the first round; the area ranged between 0.02 and 101.37 cm(2) (median 3.62 cm(2)). In the second round, 55.8% were contaminated (range 0.00-3.08 cm(2) ; median 0.01 cm(2)). The reduction in contaminated skin areas was statistically significant (p < 0.001), proving an effect of the glove demonstration. There were no significant differences between hairdressers and apprentices. Hairdressers and apprentices lack knowledge on how to handle gloves correctly. A short demonstration of correct glove use made a significant difference in the skin protection provided by gloves. © 2015 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.

  8. Binding and measuring natural rubber latex proteins on glove powder.

    PubMed

    Tomazic-Jezic, Vesna J; Lucas, Anne D; Sanchez, Beatriz A

    2004-01-01

    Cornstarch used as a donning powder on natural rubber latex (NRL) gloves adsorbs NRL proteins. During glove use, powder-carried proteins can be aerosolized and can cause allergic reactions in NRL sensitized individuals. The amount of NRL proteins bound to glove powder and its relative relationship to the total amount of proteins on the glove has not been studied, due to the difficulty in measuring proteins on powder. Using the ELISA inhibition assay for NRL proteins [Standard test method for the immunological measurement of antigenic protein in natural rubber and its products. In: The Annual Book of ASTM Standards; ASTM: West Conshohocken, PA, 2000; ASTM D 64-0] we have investigated possible protocol modifications in order to include measurement of proteins bound to glove powder, as well as the water-extractable glove proteins. Possible interference of the starch itself was evaluated by adding clean cornstarch to the assay. No significant interference was observed with powder concentrations below 5 mg/mL. We analyzed 19 extracts of powdered surgical and examination gloves before and after removal of the particulate component. Comparison of NRL glove extracts with, and without, the cornstarch powder fraction indicated significant variations in the ratios of powder-bound protein and corresponding water-extractable protein. The ratios did not appear to correlate with either the total protein on the glove, the glove weight, or the total amount of powder on the glove. However, when virgin glove powders were exposed to NRL proteins, binding was proportional to the protein concentration in the suspension. Temperature in the range from 4 degrees C to 37 degrees C, did not affect binding intensity, while a higher pH resulted in a higher level of protein associated with, or bound to, the starch. The major differences in the propensity for NRL protein binding were observed among different glove powders. The data indicate that the amount of protein that binds to glove powder

  9. Integrity of disposable nitrile exam gloves exposed to simulated movement.

    PubMed

    Phalen, Robert N; Wong, Weng Kee

    2011-05-01

    Every year, millions of health care, first responder, and industry workers are exposed to chemical and biological hazards. Disposable nitrile gloves are a common choice as both a chemical and physical barrier to these hazards, especially as an alternative to natural latex gloves. However, glove selection is complicated by the availability of several types or formulations of nitrile gloves, such as low-modulus, medical grade, low filler, and cleanroom products. This study evaluated the influence of simulated movement on the physical integrity (i.e., holes) of different nitrile exam glove brands and types. Thirty glove products were evaluated out-of-box and after exposure to simulated whole-glove movement for 2 hr. In lieu of the traditional 1 L water-leak test, a modified water-leak test, standardized to detect a 0.15 ± 0.05 mm hole in different regions of the glove, was developed. A specialized air inflation method simulated bidirectional stretching and whole-glove movement. A worst-case scenario with maximum stretching was evaluated. On average, movement did not have a significant effect on glove integrity (chi-square; p=0.068). The average effect was less than 1% between no movement (1.5%) and movement (2.1%) exposures. However, there was significant variability in glove integrity between different glove types (p≤0.05). Cleanroom gloves, on average, had the highest percentage of leaks, and 50% failed the water-leak test. Low-modulus and medical grade gloves had the lowest percentages of leaks, and no products failed the water-leak test. Variability in polymer formulation was suspected to account for the observed discrepancies, as well as the inability of the traditional 1 L water-leak test to detect holes in finger/thumb regions. Unexpectedly, greater than 80% of the glove defects were observed in the finger and thumb regions. It is recommended that existing water-leak tests be re-evaluated and standardized to account for product variability.

  10. Integrity of Disposable Nitrile Exam Gloves Exposed to Simulated Movement

    PubMed Central

    Phalen, Robert N.; Wong, Weng Kee

    2011-01-01

    Every year, millions of health care, first responder, and industry workers are exposed to chemical and biological hazards. Disposable nitrile gloves are a common choice as both a chemical and physical barrier to these hazards, especially as an alternative to natural latex gloves. However, glove selection is complicated by the availability of several types or formulations of nitrile gloves, such as low-modulus, medical-grade, low-filler, and cleanroom products. This study evaluated the influence of simulated movement on the physical integrity (i.e., holes) of different nitrile exam glove brands and types. Thirty glove products were evaluated out-of-box and after exposure to simulated whole-glove movement for 2 hr. In lieu of the traditional 1-L water-leak test, a modified water-leak test, standardized to detect a 0.15 ± 0.05 mm hole in different regions of the glove, was developed. A specialized air inflation method simulated bidirectional stretching and whole-glove movement. A worst-case scenario with maximum stretching was evaluated. On average, movement did not have a significant effect on glove integrity (chi-square; p=0.068). The average effect was less than 1% between no movement (1.5%) and movement (2.1%) exposures. However, there was significant variability in glove integrity between different glove types (p ≤ 0.05). Cleanroom gloves, on average, had the highest percentage of leaks, and 50% failed the water-leak test. Low-modulus and medical-grade gloves had the lowest percentages of leaks, and no products failed the water-leak test. Variability in polymer formulation was suspected to account for the observed discrepancies, as well as the inability of the traditional 1-L water-leak test to detect holes in finger/thumb regions. Unexpectedly, greater than 80% of the glove defects were observed in the finger and thumb regions. It is recommended that existing water-leak tests be re-evaluated and standardized to account for product variability. PMID:21476169

  11. Firefighter Hand Anthropometry and Structural Glove Sizing: A New Perspective

    PubMed Central

    Hsiao, Hongwei; Whitestone, Jennifer; Kau, Tsui-Ying; Hildreth, Brooke

    2015-01-01

    Objective We evaluated the current use and fit of structural firefighting gloves and developed an improved sizing scheme that better accommodates the U.S. firefighter population. Background Among surveys, 24% to 30% of men and 31% to 62% of women reported experiencing problems with the fit or bulkiness of their structural firefighting gloves. Method An age-, race/ethnicity-, and gender-stratified sample of 863 male and 88 female firefighters across the United States participated in the study. Fourteen hand dimensions relevant to glove design were measured. A cluster analysis of the hand dimensions was performed to explore options for an improved sizing scheme. Results The current national standard structural firefighting glove-sizing scheme underrepresents firefighter hand size range and shape variation. In addition, mismatch between existing sizing specifications and hand characteristics, such as hand dimensions, user selection of glove size, and the existing glove sizing specifications, is significant. An improved glove-sizing plan based on clusters of overall hand size and hand/finger breadth-to-length contrast has been developed. Conclusion This study presents the most up-to-date firefighter hand anthropometry and a new perspective on glove accommodation. The new seven-size system contains narrower variations (standard deviations) for almost all dimensions for each glove size than the current sizing practices. Application The proposed science-based sizing plan for structural firefighting gloves provides a step-forward perspective (i.e., including two women hand model–based sizes and two wide-palm sizes for men) for glove manufacturers to advance firefighter hand protection. PMID:26169309

  12. Mobility of an elastic glove for extravehicular activity without prebreathing.

    PubMed

    Tanaka, Kunihiko; Ikeda, Mizuki; Mochizuki, Yosuke; Katafuchi, Tetsuro

    2011-09-01

    The current U.S. extravehicular activity (EVA) suit is pressurized at 0.29 atm, which is much lower than the pressures of sea level and inside a space station. Higher pressure can reduce the risk of decompression sickness (DCS), but mobility would be sacrificed. We have demonstrated that a glove and sleeve made of elastic material increased mobility when compared with those made of nonelastic material, such as that found in the current suit. We hypothesized that an elastic glove of 0.65 atm that has no risk of DCS also has greater mobility compared with a non-elastic glove of 0.29 atm. The right hands of 10 healthy volunteers were studied in a chamber with their bare hands at normal ambient pressure, after donning a non-elastic glove with a pressure differential of 0.29 atm, and after donning an elastic glove with a pressure differential of 0.29 and 0.65 atm. Range of motion (ROM) of the index finger and surface electromyography (EMG) amplitudes during finger flexion were measured. ROM with gloves was significantly smaller than that of bare hands, but was similar between conditions of gloves regardless of elasticity and pressure differentials. However, EMG amplitudes with the elastic glove of 0.29 and 0.65 atm were significantly smaller than those with the non-elastic glove of 0.29 atm. The results suggest that mobility of the elastic glove of 0.65 atm may be better than that of the non-elastic glove of 0.29 atm, similar to that used in the current EVA suit.

  13. Transcriptomic analysis of purple leaf determination in birch.

    PubMed

    Lin, Lin; Mu, Huaizhi; Jiang, Jing; Liu, Guifeng

    2013-09-10

    'Purple Rain', a purple cultivar of Betula pendula, has dark purple leaves throughout the vegetative period. In this study, B. pendula 'Purple Rain' was found to have a higher anthocyanidin level compared with B. pendula, Transcriptome analysis revealed numerous changes in gene expression that could be attributed to color change, including the upregulation of 2467 unigenes and the downregulation of 2299 unigenes in 'Purple Rain'. Furthermore, anthocyanidin synthesis and transcriptional regulation were altered in 'Purple Rain', which may have contributed to phenotypic changes. These results provide unique molecular insights into the biochemical pathways and regulatory networks that function in a purple variety of B. pendula.

  14. Anthropomorphic Robot Hand And Teaching Glove

    NASA Technical Reports Server (NTRS)

    Engler, Charles D., Jr.

    1991-01-01

    Robotic forearm-and-hand assembly manipulates objects by performing wrist and hand motions with nearly human grasping ability and dexterity. Imitates hand motions of human operator who controls robot in real time by programming via exoskeletal "teaching glove". Telemanipulator systems based on this robotic-hand concept useful where humanlike dexterity required. Underwater, high-radiation, vacuum, hot, cold, toxic, or inhospitable environments potential application sites. Particularly suited to assisting astronauts on space station in safely executing unexpected tasks requiring greater dexterity than standard gripper.

  15. Anthropomorphic Robot Hand And Teaching Glove

    NASA Technical Reports Server (NTRS)

    Engler, Charles D., Jr.

    1991-01-01

    Robotic forearm-and-hand assembly manipulates objects by performing wrist and hand motions with nearly human grasping ability and dexterity. Imitates hand motions of human operator who controls robot in real time by programming via exoskeletal "teaching glove". Telemanipulator systems based on this robotic-hand concept useful where humanlike dexterity required. Underwater, high-radiation, vacuum, hot, cold, toxic, or inhospitable environments potential application sites. Particularly suited to assisting astronauts on space station in safely executing unexpected tasks requiring greater dexterity than standard gripper.

  16. Automating the Purple Crow Lidar

    NASA Astrophysics Data System (ADS)

    Hicks, Shannon; Sica, R. J.; Argall, P. S.

    2016-06-01

    The Purple Crow LiDAR (PCL) was built to measure short and long term coupling between the lower, middle, and upper atmosphere. The initial component of my MSc. project is to automate two key elements of the PCL: the rotating liquid mercury mirror and the Zaber alignment mirror. In addition to the automation of the Zaber alignment mirror, it is also necessary to describe the mirror's movement and positioning errors. Its properties will then be added into the alignment software. Once the alignment software has been completed, we will compare the new alignment method with the previous manual procedure. This is the first among several projects that will culminate in a fully-automated lidar. Eventually, we will be able to work remotely, thereby increasing the amount of data we collect. This paper will describe the motivation for automation, the methods we propose, preliminary results for the Zaber alignment error analysis, and future work.

  17. 21 CFR 878.4470 - Surgeon's gloving cream.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 21 Food and Drugs 8 2010-04-01 2010-04-01 false Surgeon's gloving cream. 878.4470 Section 878.4470 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GENERAL AND PLASTIC SURGERY DEVICES Surgical Devices § 878.4470 Surgeon's gloving...

  18. 21 CFR 878.4470 - Surgeon's gloving cream.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 21 Food and Drugs 8 2012-04-01 2012-04-01 false Surgeon's gloving cream. 878.4470 Section 878.4470 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GENERAL AND PLASTIC SURGERY DEVICES Surgical Devices § 878.4470 Surgeon's gloving...

  19. 21 CFR 878.4470 - Surgeon's gloving cream.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 21 Food and Drugs 8 2011-04-01 2011-04-01 false Surgeon's gloving cream. 878.4470 Section 878.4470 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GENERAL AND PLASTIC SURGERY DEVICES Surgical Devices § 878.4470 Surgeon's gloving...

  20. 21 CFR 878.4470 - Surgeon's gloving cream.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 21 Food and Drugs 8 2013-04-01 2013-04-01 false Surgeon's gloving cream. 878.4470 Section 878.4470 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GENERAL AND PLASTIC SURGERY DEVICES Surgical Devices § 878.4470 Surgeon's gloving...

  1. 21 CFR 878.4470 - Surgeon's gloving cream.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 21 Food and Drugs 8 2014-04-01 2014-04-01 false Surgeon's gloving cream. 878.4470 Section 878.4470 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES GENERAL AND PLASTIC SURGERY DEVICES Surgical Devices § 878.4470 Surgeon's gloving...

  2. 3. VIEW OF CHAINVEYOR. AN ENCLOSED CHAIN CONVEYOR CONNECTED GLOVE ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    3. VIEW OF CHAINVEYOR. AN ENCLOSED CHAIN CONVEYOR CONNECTED GLOVE BOXES WITHIN AND BETWEEN MODULAR WORK AREAS. LEADED GLOVES WERE AFFIXED TO PORTS ALONG THE CHAINVEYOR PATHWAY TO ALLOW OPERATOR ACCESS. (1/25/93) - Rocky Flats Plant, Plutonium Manufacturing Facility, North-central section of Plant, just south of Building 776/777, Golden, Jefferson County, CO

  3. 9. VIEW, LOOKING WEST, OF GLOVE BOXES ASSOCIATED WITH THE ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    9. VIEW, LOOKING WEST, OF GLOVE BOXES ASSOCIATED WITH THE ANION EXCHANGE PROCESS IN ROOM 149. THE GLOVE BOXES ON THE LEFT CONTAIN MIXER STIRRERS THAT AID IN THE DISSOLUTION PROCESS THAT OCCURRED PRIOR TO ANION EXCHANGE. (6/20/60) - Rocky Flats Plant, Plutonium Recovery & Fabrication Facility, North-central section of plant, Golden, Jefferson County, CO

  4. 12. VIEW OF THE INSPECTION MODULE (MODULE D). THE GLOVE ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    12. VIEW OF THE INSPECTION MODULE (MODULE D). THE GLOVE BOX IN THE FOREFRONT OF THE PHOTOGRAPH CONTAINS A DRILL PRESS; OTHER GLOVE BOXES ARE USED FOR PARTS INSPECTION. (5/70) - Rocky Flats Plant, Plutonium Manufacturing Facility, North-central section of Plant, just south of Building 776/777, Golden, Jefferson County, CO

  5. Haptic Glove Technology: Skill Development through Video Game Play

    ERIC Educational Resources Information Center

    Bargerhuff, Mary Ellen; Cowan, Heidi; Oliveira, Francisco; Quek, Francis; Fang, Bing

    2010-01-01

    This article introduces a recently developed haptic glove system and describes how the participants used a video game that was purposely designed to train them in skills that are needed for the efficient use of the haptic glove. Assessed skills included speed, efficiency, embodied skill, and engagement. The findings and implications for future…

  6. The Use of Latex Gloves in the School Setting

    ERIC Educational Resources Information Center

    Purcell, Cathy Koeppen

    2006-01-01

    In 1987, when the U.S. Centers for Disease Control and Prevention recommended the use of universal precautions in response to the HIV/AIDS epidemic, the demand for medical gloves dramatically increased. Unfortunately, the manufacturing techniques for the most widely-used gloves--natural rubber latex--also changed, in order to expedite production.…

  7. Evaluation of Polyurethane as a Cosmetic Glove Material.

    DTIC Science & Technology

    Polyurethane latex was evaluated for possible use as a cosmetic glove material. A two component latex system was used with a number of films and a... cosmetic glove being fabricated and evaluated with varying amounts of the two components. The mechanical properties indicate that the material is

  8. Transmission of vibration through gloves: effects of contact area.

    PubMed

    Md Rezali, Khairil Anas; Griffin, Michael J

    2017-01-01

    For three samples of material (12.5, 25.0 and 37.5 mm diameter) from each of three gloves, the dynamic stiffnesses and the vibration transmissibilities of the materials (to both the palm of the hand and the thenar eminence) were measured at frequencies from 10 to 300 Hz. Additional measurements showed the apparent masses of the hand at the palm and the thenar eminence were independent of contact area at frequencies less than about 40 Hz, but increased with increasing area at higher frequencies. The stiffness and damping of the glove materials increased with increasing area. These changes caused material transmissibilities to the hand to increase with increasing area. It is concluded that the size of the area of contact has a large influence on the transmission of vibration through a glove to the hand. The area of contact should be well-defined and controlled when evaluating the transmission of vibration through gloves. Practitioner Summary: The transmission of vibration through gloves depends on both the dynamic stiffness of glove material and the dynamic response of the hand. Both of these depend on the size of the contact area between a glove material and the hand, which should be taken into account when assessing glove transmissibility.

  9. The Use of Latex Gloves in the School Setting

    ERIC Educational Resources Information Center

    Purcell, Cathy Koeppen

    2006-01-01

    In 1987, when the U.S. Centers for Disease Control and Prevention recommended the use of universal precautions in response to the HIV/AIDS epidemic, the demand for medical gloves dramatically increased. Unfortunately, the manufacturing techniques for the most widely-used gloves--natural rubber latex--also changed, in order to expedite production.…

  10. 5. VIEW OF A GLOVE BOX FIREWALL DETAIL. THE FIREWALL ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    5. VIEW OF A GLOVE BOX FIREWALL DETAIL. THE FIREWALL WAS A SAFETY FEATURE TO PREVENT THE SPREAD OF FIRE BETWEEN INTERCONNECTED GLOVE BOXES. PLUTONIUM IS PYROPHORIC, AND MAY IGNITE IN THE PRESENCE OF OXYGEN. (5/8/70) - Rocky Flats Plant, Plutonium Manufacturing Facility, North-central section of Plant, just south of Building 776/777, Golden, Jefferson County, CO

  11. A System for Cooling inside a Glove Box

    ERIC Educational Resources Information Center

    Sanz, Martial

    2010-01-01

    An easy, efficient, reliable, and low-cost method of constructing a cooling system using a simple circulating pump is described. The system is employed in conjunction with an inert atmosphere glove box to achieve the synthesis of air- and moisture-sensitive compounds inside the glove box at controlled, low temperatures without contaminating the…

  12. Light transmission and air used for inspection of glovebox gloves.

    SciTech Connect

    Castro, J. M.; Steckle, W. P. , Jr.; Macdonald, J. M.

    2002-01-01

    Various materials used for manufacturing the glovebox gloves are translucent material such as hypalon, rubbers, and neoprene. This means that visible light can be transmitted through the inside of the material. Performing this test can help to increase visualization of the integrity of the glove. Certain flaws such as pockmarks, foreign material, pinholes, and scratches could be detected with increased accuracy. An analysis was conducted of the glovebox gloves obscure polymer material using a inspection light table. The fixture is equipped with a central light supply and small air pump to inflate the glove and test for leak and stability. A glove is affixed to the fixture for 360-degree inspection. Certain inspection processes can be performed: (1) Inspection for pockmarks and thin areas within the gloves; (2) Observation of foreign material within the polymer matrix; and (3) Measurements could be taken for gloves thickness using light measurements. This process could help reduce eyestrain when examining gloves and making a judgment call on the size of material thickness in some critical areas. Critical areas are fingertips and crotch of fingers.

  13. Construct-a-Glove. Science by Design Series.

    ERIC Educational Resources Information Center

    Pulis, Lee

    This book is one of four books in the Science-by-Design Series created by TERC and funded by the National Science Foundation (NSF). It offers high school students a challenging, hands-on opportunity to compare the function and design of many types of handwear from a hockey mitt to a surgical glove, and design and test a glove to their own…

  14. A System for Cooling inside a Glove Box

    ERIC Educational Resources Information Center

    Sanz, Martial

    2010-01-01

    An easy, efficient, reliable, and low-cost method of constructing a cooling system using a simple circulating pump is described. The system is employed in conjunction with an inert atmosphere glove box to achieve the synthesis of air- and moisture-sensitive compounds inside the glove box at controlled, low temperatures without contaminating the…

  15. Assessment of Protective Gloves for Use with Airfed Suits.

    PubMed

    Millard, Claire E; Vaughan, Nicholas P

    2015-10-01

    Gloves are often needed for hand protection at work, but they can impair manual dexterity, especially if they are multilayered or ill-fitting. This article describes two studies of gloves to be worn with airfed suits (AFS) for nuclear decommissioning or containment level 4 (CL4) microbiological work. Both sets of workers wear multiple layers of gloves for protection and to accommodate decontamination procedures. Nuclear workers are also often required to wear cut-resistant gloves as an extra layer of protection. A total of 15 subjects volunteered to take part in manual dexterity testing of the different gloving systems. The subjects' hands were measured to ensure that the appropriate sized gloves were used. The gloves were tested with the subjects wearing the complete clothing ensembles appropriate to the work, using a combination of standard dexterity tests: the nine-hole peg test; a pin test adapted from the European Standard for protective gloves, the Purdue Pegboard test, and the Minnesota turning test. Specialized tests such as a hand tool test were used to test nuclear gloves, and laboratory-type manipulation tasks were used to test CL4 gloves. Subjective assessments of temperature sensation and skin wettedness were made before and after the dexterity tests of the nuclear gloves only. During all assessments, we made observations and questioned the subjects about ergonomic issues related to the clothing ensembles. Overall, the results show that the greater the thickness of the gloves and the number of layers the more the levels of manual dexterity performance are degraded. The nuclear cut-resistant gloves with the worst level of dexterity were stiff and inflexible and the subjects experienced problems picking up small items and bending their hands. The work also highlighted other factors that affect manual dexterity performance, including proper sizing, interactions with the other garments worn at the time, and the work equipment in use. In conclusion, when

  16. Assessment of Protective Gloves for Use with Airfed Suits

    PubMed Central

    Millard, Claire E.

    2015-01-01

    Gloves are often needed for hand protection at work, but they can impair manual dexterity, especially if they are multilayered or ill-fitting. This article describes two studies of gloves to be worn with airfed suits (AFS) for nuclear decommissioning or containment level 4 (CL4) microbiological work. Both sets of workers wear multiple layers of gloves for protection and to accommodate decontamination procedures. Nuclear workers are also often required to wear cut-resistant gloves as an extra layer of protection. A total of 15 subjects volunteered to take part in manual dexterity testing of the different gloving systems. The subjects’ hands were measured to ensure that the appropriate sized gloves were used. The gloves were tested with the subjects wearing the complete clothing ensembles appropriate to the work, using a combination of standard dexterity tests: the nine-hole peg test; a pin test adapted from the European Standard for protective gloves, the Purdue Pegboard test, and the Minnesota turning test. Specialized tests such as a hand tool test were used to test nuclear gloves, and laboratory-type manipulation tasks were used to test CL4 gloves. Subjective assessments of temperature sensation and skin wettedness were made before and after the dexterity tests of the nuclear gloves only. During all assessments, we made observations and questioned the subjects about ergonomic issues related to the clothing ensembles. Overall, the results show that the greater the thickness of the gloves and the number of layers the more the levels of manual dexterity performance are degraded. The nuclear cut-resistant gloves with the worst level of dexterity were stiff and inflexible and the subjects experienced problems picking up small items and bending their hands. The work also highlighted other factors that affect manual dexterity performance, including proper sizing, interactions with the other garments worn at the time, and the work equipment in use. In conclusion, when

  17. Development of a test protocol for evaluating EVA glove performance

    NASA Technical Reports Server (NTRS)

    Hinman, Elaine M.

    1992-01-01

    Testing gloved hand performance involves work from several disciplines. Evaluations performed in the course of reenabling a disabled hand, designing a robotic end effector or master controller, or hard-suit design have all yielded relevant information, and, in most cases, produced performance test methods. Most times, these test methods have been primarily oriented toward their parent discipline. For space operations, a comparative test which would provide a way to quantify pressure glove and end effector performance would be useful in dividing tasks between humans and robots. Such a test would have to rely heavily on sensored measurement, as opposed to questionnaires, to produce relevant data. However, at some point human preference would have to be taken into account. This paper presents a methodology for evaluating gloved hand performance which attempts to respond to these issues. Glove testing of a prototype glove design using this method is described.

  18. RoboGlove - A Robonaut Derived Multipurpose Assistive Device

    NASA Technical Reports Server (NTRS)

    Diftler, Myron; Ihrke, C. A.; Bridgwater, L. B.; Davis, D. R.; Linn, D. M.; Laske, E. A.; Ensley, K. G.; Lee, J. H.

    2014-01-01

    The RoboGlove is an assistive device that can augment human strength, endurance or provide directed motion for use in rehabilitation. RoboGlove is a spinoff of the highly successful Robonaut 2 (R2) system developed as part of a partnership between General Motors and NASA. This extremely lightweight device employs an actuator system based on the R2 finger drive system to transfer part or the entire grasp load from human tendons to artificial ones contained in the glove. Steady state loads ranging from 15 to 20 lbs. and peaks approaching 50 lbs. are achievable. The technology holds great promise for use with space suit gloves to reduce fatigue during space walks. Tactile sensing, miniaturized electronics, and on-board processing provide sufficient flexibility for applications in many industries. The following describes the design, mechanical/electrical integration, and control features of the glove.

  19. The 757 NLF glove flight test results

    NASA Technical Reports Server (NTRS)

    Runyan, L. Jim; Bielak, G. W.; Behbehani, R. A.; Chen, A. W.; Rozendaal, Roger A.

    1987-01-01

    A major concern in the application of a laminar flow wing design to commercial transports is whether laminar flow can be sustained in the presence of the noise environment due to wing mounted turbofan engines. To investigate this issue, a flight test program was conducted using the Boeing 757 flight research airplane with a portion of the wing modified to obtain natural laminar flow. The flight test had two primary objectives. The first was to measure the noise levels on the upper and lower surface of the wing for a range of flight conditions. The second was to investigate the effect of engine noise on laminar boundary layer transition. The noise field on the wing and transition location on the glove were then measured as a function of the engine power setting at a given flight condition. The transition and noise measurement on the glove show that there is no apparent effect of engine noise on the upper surface transition location. On the lower surface, the transition location moved forward 2 to 3 percent chord. A boundary layer stability analysis to the flight data showed that cross flow disturbances were the dominant cause of transition at most flight conditions.

  20. Indications and the requirements for single-use medical gloves

    PubMed Central

    Kramer, Axel; Assadian, Ojan

    2016-01-01

    Aim: While the requirements for single-use gloves for staff protection are clearly defined, the conventional medical differentiation between “sterile surgical gloves” used during surgical procedures and “single-use medical gloves” used in non-sterile medical areas does not adequately define the different requirements in these two areas of use. Sterilization of single-use medical gloves is not performed if sterility is not required; thus, another terminology must be found to identify the safety quality of non-sterile single-use medical gloves. Therefore, the labeling of such gloves should reflect this situation, by introducing the term “pathogen-free” single-use glove. The hygienic safety of such a glove would be attainable by ensuring aseptic manufacturing conditions during manufacturing and control of pathogen load of batch controls after fabrication. Proposed recommendation: Because single-use gloves employed in non-sterile areas come into contact not only with intact skin but also with mucous membranes, no potential pathogens should be detectable in 100 mL of rinse sample. In order to declare such gloves as pathogen-free we suggest absence of the indicator species S. aureus and E. coli. In addition, the total CFU count should be evaluated, since a high load indicates lack of optimal hygiene during the manufacturing process. Based on the requirements for potable water and findings obtained from investigations of the bacterial load of such gloves after manufacturing, the here suggested limit for the total bacterial count of <102 CFU/mL of rinse sample per glove seems realistic. PMID:26816673

  1. Statistical analysis of barrier isolator/glovebox glove failure.

    PubMed

    Park, Young H; Pines, E; Ofouku, M; Cournoyer, M E

    2007-01-01

    In response to new, stricter safety requirements set out by the federal government, compounding pharmacists are investigating applications and processes appropriate for their facilities. One application, cutrrently used by many industries, was developed by Los Alamos National Laboratories for defense work. A barrier isolator or "glovebox" is a containment device that allows work within a sealed space while providing protection for people and the environment. Though knowledge of glove box use and maintenance has grown, unplanned breaches (e.g., glove failures) remain a concern. Recognizing that effective maintenance procedures can minimize breaches, we analyzed data drawn from glove failure records of Los Alamos National Laboratory's Nuclear Materials Technology Division to evaluate current inventory strategy in light of actual performance of the various types of gloves. This report includes a description of the statistical methods employed. The results of our analysis pinpointed the most frequently occurring causes of glove failure and revealed a significant imbalance between the current glove replacement schedule and the rate of glove failures in a much shorter period. We concluded that, to minimize unplanned breaches, either the replacement period needs to be adjusted or causes of failure eliminated or reduced.

  2. A human factors evaluation of Extravehicular Activity gloves

    NASA Technical Reports Server (NTRS)

    O'Hara, John M.; Briganti, Michael; Cleland, John; Winfield, Dan

    1989-01-01

    One of the major problems faced in Extravehicular Activity (EVA) glove development has been the absence of concise and reliable methods to measure the effects of EVA gloves on human-hand capabilities. NASA has sponsored a program to develop a standardized set of tests designed to assess EVA-gloved hand capabilities in six performance domains: Range of Motion, Strength, Tactile Perception, Dexterity, Fatigue, and Comfort. Based upon an assessment of general human-hand functioning and EVA task requirements, several tests within each performance domain were developed to provide a comprehensive evaluation. All tests were designed to be conducted in a glove box with the bare hand, an EVA glove without pressure, an EVA glove at operation pressure. Thus, the differential effect on performance of the glove with and without pressure was tested. Bare hand performance was used to 'calibrate' the effects. Ten subjects participated in the test setup as a repeated-measures experimental design. The paper will report the results of the test program.

  3. Investigation of various clean room gloves for cleanliness

    NASA Astrophysics Data System (ADS)

    Lobmeyer, Lynette; Pirkey, Mike

    2012-10-01

    The donning of gloves is an essential handling requirement for minimizing aerospace hardware contamination. . Glove manufacturers frequently tout particle cleanliness, aqueous extractables, and pin holes in their literature. However, t comfort, dexterity, the level of non-volatile residue, and other characteristics are also important characteristics to consider when dealing with contamination sensitive, high-value hardware. In this paper, Ball Aerospace and Technologies (BATC) reports on its s investigation of several readily available gloves for use in the aerospace manufacturing environment and has developed a method of selection, testing, and analysis to ensure that gloves donned are ready for service. The testing method used do not necessarily comply any with any industry standards. The original tests fell into several categories. One of these was a non-volatile residue (NVR) test which examined contamination on the surface of the glove. A number of lots from several manufacturers were evaluated which provided insights into the cleanliness levels of gloves from potential. This has allowed us to track the lot to lot variability of the cleanliness level of gloves we receive from approved vendors.

  4. Development and Test of Robotically Assisted Extravehicular Activity Gloves

    NASA Technical Reports Server (NTRS)

    Rogers, Jonathan M.; Peters, Benjamin J.; Laske, Evan A.; McBryan, Emily R.

    2017-01-01

    Over the past two years, the High Performance EVA Glove (HPEG) project under NASA's Space Technology Mission Directorate (STMD) funded an effort to develop an electromechanically-assisted space suit glove. The project was a collaboration between the Johnson Space Center's Software, Robotics, and Simulation Division and the Crew and Thermal Systems division. The project sought to combine finger actuator technology developed for Robonaut 2 with the softgoods from the ILC Phase VI EVA glove. The Space Suit RoboGlove (SSRG) uses a system of three linear actuators to pull synthetic tendons attached to the glove's fingers to augment flexion of the user's fingers. To detect the user's inputs, the system utilizes a combination of string potentiometers along the back of the fingers and force sensitive resistors integrated into the fingertips of the glove cover layer. This paper discusses the development process from initial concepts through two major phases of prototypes, and the results of initial human testing. Initial work on the project focused on creating a functioning proof of concept, designing the softgoods integration, and demonstrating augmented grip strength with the actuators. The second year of the project focused on upgrading the actuators, sensors, and software with the overall goal of creating a system that moves with the user's fingers in order to reduce fatigue associated with the operation of a pressurized glove system. This paper also discusses considerations for a flight system based on this prototype development and address where further work is required to mature the technology.

  5. Next Generation Life Support: High Performance EVA Glove

    NASA Technical Reports Server (NTRS)

    Walsh, Sarah K.

    2015-01-01

    The objectives of the High Performance EVA Glove task are to develop advanced EVA gloves for future human space exploration missions and generate corresponding standards by which progress may be quantitatively assessed. New technologies and manufacturing techniques will be incorporated into the new gloves to address finger and hand mobility, injury reduction and durability in nonpristine environments. Three prototypes will be developed, each focusing on different technological advances. A robotic assist glove will integrate a powered grasping system into the current EVA glove design to reduce astronaut hand fatigue and hand injuries. A mechanical counter pressure (MCP) glove will be developed to further explore the potential of MCP technology and assess its capability for countering the effects of vacuum or low pressure environments on the body by using compression fabrics or materials to apply the necessary pressure. A gas pressurized glove, incorporating new technologies, will be the most flight-like of the three prototypes. Advancements include the development and integration of aerogel insulation, damage sensing components, dust-repellant coatings, and dust tolerant bearings.

  6. Grip force and muscle activity differences due to glove type.

    PubMed

    Kovacs, Kimberly; Splittstoesser, Riley; Maronitis, Anthony; Marras, William S

    2002-01-01

    The purpose of this study was to investigate the effects of different types and sizes of gloves on external grip force and muscle activity. Twenty-one male and seven female volunteers served as subjects. Each subject performed two maximum voluntary grip contractions while wearing each of the 10 glove types. Results indicated significant differences in the effects of different glove types on the peak force, ratio of peak force to normalized flexor muscle EMG activity, and the ratio of peak force to coactivity.

  7. Sterile versus non-sterile glove use and aseptic technique.

    PubMed

    Flores, Ashley

    There is evidence indicating that improvements in infection control practice can reduce the incidence of healthcare-associated infection. This article explores the evidence base for glove use and aseptic technique. There is a lack of evidence regarding the influence of sterile versus clean gloves in clinical care. Therefore in practice, clean and aseptic techniques are often used interchangeably. Nurses must learn to select clean or aseptic technique, and therefore clean or sterile gloves, using a risk assessment protocol. Regular audits of aseptic technique and education are needed to improve care.

  8. Design of an Analytical System for the Evaluation of Gloves for Protection of Personnel Handling XCSM

    DTIC Science & Technology

    1993-05-13

    protective gloves during the handling of CSM and XCSM is required for personal safety. Although the use of gloves tested for their resistance to CSM is...absence of specific permeation data for XCSM. In order to better define glove needs for XCSM work, the USAMRDC tasked the MREF to test various glove ...materials for XCSM permeation . In preparing for this, parameters needed to test the gloves were evaluated, along with the methods currently used to

  9. The Purple Rose of Virgo

    NASA Astrophysics Data System (ADS)

    2007-03-01

    Until now NGC 5584 was just one galaxy among many others, located to the West of the Virgo Cluster. Known only as a number in galaxy surveys, its sheer beauty is now revealed in all its glory in a new VLT image. Since 1 March, this purple cosmic rose also holds the brightest stellar explosion of the year, known as SN 2007af. Located about 75 million light years away towards the constellation Virgo ('the Virgin'), NGC 5584 is a galaxy slightly smaller than the Milky Way. It belongs, however, to the same category: both are barred spirals. ESO PR Photo 16/07 ESO PR Photo 16/07 The Purple Rose of Virgo Spiral galaxies are composed of a 'bulge' and a flat disc. The bulge hosts old stars and usually a central supermassive black hole. Younger stars reside in the disc, forming the characteristic spiral structures from which the galaxies get their name. Barred spirals are crossed by a bright band of stars. In 2000, using ESO's Very Large Telescope, astronomers discovered the smallest, faintest, and most massive spirals (see ESO PR 12/00 and 25/00). In this amazing new image of NGC 5584 two dominant spiral arms are clearly visible, while the others are deformed, probably due to interactions with other galaxies. Luminous patches are spread all over the disc, indicating that stars are being formed in this gigantic rose at a frantic pace. Something even brighter, however, catches the eye in this picture. Any image taken before the end of February would not have shown the luminous spot located at the lower right of the galaxy's centre. As can be seen, the newly found object is much brighter than the centre of the galaxy itself. Its name? SN 2007af, the 32nd supernova discovered this year. Its presence signals the dramatic death of a star with a mass comparable to that of the Sun. SN 2007af, the brightest supernova of the year (so far), was discovered on 1 March by the Japanese supernova hunter Koichi Itagaki. He pointed his 60-centimetre telescope towards the Virgo constellation

  10. PERMEATION OF MULTIFUNCTIONAL ACRYLATES THROUGH SELECTED PROTECTIVE GLOVE MATERIALS

    EPA Science Inventory

    In support of the Premanufacture Notification (PMN) program of the Environmental Protection Agency's Office of Toxic Substances, the resistance of three glove materials to permeation by multifunctional acrylate compounds was evaluated through a program for the Office of Research ...

  11. 16. VIEW OF GLOVE BOX WORKSTATIONS WITHIN THE PLUTONIUM BUTTON ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    16. VIEW OF GLOVE BOX WORKSTATIONS WITHIN THE PLUTONIUM BUTTON BREAKOUT ROOM. (9/82) - Rocky Flats Plant, Plutonium Recovery Facility, Northwest portion of Rocky Flats Plant, Golden, Jefferson County, CO

  12. 7. Process areas room. Incinerator and glove boxes (hoods) to ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    7. Process areas room. Incinerator and glove boxes (hoods) to the right. Filter boxes to the left. Looking south. - Plutonium Finishing Plant, Waste Incinerator Facility, 200 West Area, Richland, Benton County, WA

  13. 8. Front (east) side of incinerator and glove boxes. Ash ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    8. Front (east) side of incinerator and glove boxes. Ash canning hood to the left, combustion chamber in the middle, incinerator hood to the right. Looking west. - Plutonium Finishing Plant, Waste Incinerator Facility, 200 West Area, Richland, Benton County, WA

  14. Transparent Plastic Incubator for the Anaerobic Glove Box

    PubMed Central

    Balish, Edward; Brown, James F.; Wilkins, Tracy D.

    1977-01-01

    An incubator designed for use inside an anaerobic glove box is described. The incubator is made of transparent plastic material, has sliding plastic doors, and can be made in various sizes from readily available materials. Images PMID:16345202

  15. Efficacy and tolerability of ClO2-generating gloves.

    PubMed

    Barza, Michael

    2004-03-15

    The transmission of pathogenic microorganisms by the hands of workers continues to be a problem in the medical field and the food industry. Compliance with hand hygiene is often poor, and gloves may be contaminated after being donned and may transmit microorganisms. A novel, patented technology allows materials to be impregnated with microspheres that, when activated by light or moisture, generate ClO2 at sustained rates to produce a disinfecting microatmosphere. Gloves that were seeded with bacteria and then exposed to light were able to reduce the numbers of Staphylococcus aureus, Escherichia coli, Salmonella serotype Typhimurium, and Listeria monocytogenes by 1-3 logs within 20 min, both on the gloves and on the hands of wearers. The gloves look and feel like their standard counterparts and were well tolerated in the Draize test. This technology holds promise for reducing cross-contamination and the transmission of pathogens in the medical and food handling environments.

  16. Energy evaluation of protection effectiveness of anti-vibration gloves.

    PubMed

    Hermann, Tomasz; Dobry, Marian Witalis

    2017-09-01

    This article describes an energy method of assessing protection effectiveness of anti-vibration gloves on the human dynamic structure. The study uses dynamic models of the human and the glove specified in Standard No. ISO 10068:2012. The physical models of human-tool systems were developed by combining human physical models with a power tool model. The combined human-tool models were then transformed into mathematical models from which energy models were finally derived. Comparative energy analysis was conducted in the domain of rms powers. The energy models of the human-tool systems were solved using numerical simulation implemented in the MATLAB/Simulink environment. The simulation procedure demonstrated the effectiveness of the anti-vibration glove as a method of protecting human operators of hand-held power tools against vibration. The desirable effect is achieved by lowering the flow of energy in the human-tool system when the anti-vibration glove is employed.

  17. Double gloves reduce contamination of dry box atmosphere

    NASA Technical Reports Server (NTRS)

    Herbell, T. P.; Quantinetz, M.; Reinhardt, G.

    1965-01-01

    Pair of encased low permeability hand gloves between which an inert gas circulates reduces dry box contamination. This innovation is applicable to dry boxes using radioactive and alkali metal compounds, submicron powders, and liquid metals.

  18. 21. NBS SUIT LAB. THREE GLOVES, HELMET, AND SCREW DRIVER ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    21. NBS SUIT LAB. THREE GLOVES, HELMET, AND SCREW DRIVER TORQUE WRENCH FOR ASSEMBLY AND REPAIR OF BOTH. - Marshall Space Flight Center, Neutral Buoyancy Simulator Facility, Rideout Road, Huntsville, Madison County, AL

  19. PERMEATION OF MULTIFUNCTIONAL ACRYLATES THROUGH SELECTED PROTECTIVE GLOVE MATERIALS

    EPA Science Inventory

    In support of the Premanufacture Notification (PMN) program of the Environmental Protection Agency's Office of Toxic Substances, the resistance of three glove materials to permeation by multifunctional acrylate compounds was evaluated through a program for the Office of Research ...

  20. 16. Rear (west) side of incinerator. Glove boxes to the ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    16. Rear (west) side of incinerator. Glove boxes to the left. Metal catwalk in the middle. Incinerator control panel to the right. Looking south towards scrubber cell. - Plutonium Finishing Plant, Waste Incinerator Facility, 200 West Area, Richland, Benton County, WA

  1. Glove accumulation of pesticide residues for strawberry harvester exposure assessment.

    PubMed

    Li, Yanhong; Chen, Li; Chen, Zhenshan; Coehlo, Joe; Cui, Li; Liu, Yu; Lopez, Terry; Sankaran, Gayatri; Vega, Helen; Krieger, Robert

    2011-06-01

    We investigated the accumulation of pesticide residues on rubber latex gloves that are used by strawberry harvesters to protect their skin, reduce pesticide exposure and promote food safety. Gloves accumulated residues of 16 active ingredients including azoxystrobin, bifenthrin, boscalid, captan, cyprodinil, fenhexamid, fenpropathrin, fludioxonil, hexythiazox, malathion, methomyl, naled, propiconazole, pyraclostrobin, quinoline, and quinoxyfen at different times. Glove residue accumulation (t(½) 2.8-3.7 d) was very similar to the dissipation of DFRs (t(½) 2.1-3.0 d) during the first 3 weeks after malathion applications. Dermal malathion dose was 0.2 mg/kg at the preharvest interval and declined to trace levels during the following 3 months. Glove accumulation of malathion indicated trace surface residue availability and was used to assess the relationship between dislodgable foliar residues and potential hand exposure.

  2. Control of a Glove-Based Grasp Assist Device

    NASA Technical Reports Server (NTRS)

    Bergelin, Bryan J (Inventor); Ihrke, Chris A. (Inventor); Davis, Donald R. (Inventor); Linn, Douglas Martin (Inventor); Sanders, Adam M (Inventor); Askew, R. Scott (Inventor); Laske, Evan (Inventor); Ensley, Kody (Inventor)

    2015-01-01

    A grasp assist system includes a glove and sleeve. The glove includes a digit, i.e., a finger or thumb, and a force sensor. The sensor measures a grasping force applied to an object by an operator wearing the glove. The glove contains a tendon connected at a first end to the digit. The sleeve has an actuator assembly connected to a second end of the tendon and a controller in communication with the sensor. The controller includes a configuration module having selectable operating modes and a processor that calculates a tensile force to apply to the tendon for each of the selectable operating modes to assist the grasping force in a manner that differs for each of the operating modes. A method includes measuring the grasping force, selecting the mode, calculating the tensile force, and applying the tensile force to the tendon using the actuator assembly.

  3. [Latex and synthetic polymers gloves: protective effectiveness against biological risk].

    PubMed

    Balbiani, Lara; Sossai, D

    2008-01-01

    The quick evolution of knowledge about latex and, especially, its effectiveness as protection against biological risks on one hand, and, on the other hand, as trigger of cutaneous, respiratory and sistemic allergic diseases, required a marked distinction between conditions in which latex is necessary and conditions in which latex could be substituted by syntetic polymers. The aim of this study is to verify protective effectiveness of gloves made of syntetic polymers against biological risks compared with latex gloves which until now have been considered as the best protection. Literature review. The most recent studies seem to consider neoprene gloves as the safest protection to replace latex in working activities with high biological risk exposure. The literature review marked the lack of studies exclusively focused on glove permeability towards biological agents. It seems therefore necessary to investigate this topic to validate results and to guarantee a suitable protection to workers daily exposed to biological risk.

  4. EVA space suit Evaporative Cooling/Heating Glove System (ECHGS)

    NASA Technical Reports Server (NTRS)

    Coss, F. A.

    1976-01-01

    A new astronaut glove, the Evaporative Cooling/Heating Glove System (ECHGS), was designed and developed to allow the handling of objects between -200 F and +200 F. Active heating elements, positioned at each finger pad, provide additional heat to the finger pads from the rest of the finger. A water evaporative cooling system provides cooling by the injection of water to the finger areas and the subsequent direct evaporation to space. Thin, flexible insulation has been developed for the finger areas to limit thermal conductivity. Component and full glove tests have shown that the glove meets and exceeds the requirements to hold a 11/2 inch diameter bar at + or - 200 F for three minutes within comfort limits. The ECHGS is flexible, lightweight and comfortable. Tactility is reasonable and small objects can be identified especially by the fingertips beyond the one half width active elements.

  5. Fire and nitrogen effects on purple threeawn invaded plant communities

    USDA-ARS?s Scientific Manuscript database

    Purple threeawn (Aristida purpurea) is a native grass capable of rapidly increasing on rangelands, forming near monocultures, and arresting ecological succession. Productive rangelands throughout the Great Plains and Intermountain West have experienced increases in purple threeawn abundance, leadin...

  6. An Approach for Performance Based Glove Mobility Requirements

    NASA Technical Reports Server (NTRS)

    Aitchison, Lindsay; Benson, Elizabeth; England, Scott

    2015-01-01

    The Space Suit Assembly (SSA) Development Team at NASA Johnson Space Center has invested heavily in the advancement of rear-entry planetary exploration suit design but largely deferred development of extravehicular activity (EVA) glove designs, and accepted the risk of using the current flight gloves, Phase VI, for exploration missions. However, as design reference missions mature, the risks of using heritage hardware have highlighted the need for developing robust new glove technologies. To address the technology gap, the NASA Space Technology Mission Directorate's Game-Changing Development Program provided start-up funding for the High Performance EVA Glove (HPEG) Element as part of the Next Generation Life Support (NGLS) Project in the fall of 2013. The overarching goal of the HPEG Element is to develop a robust glove design that increases human performance during EVA and creates pathway for implementation of emergent technologies, with specific aims of increasing pressurized mobility to 60% of barehanded capability, increasing the durability in on-pristine environments, and decreasing the potential of gloves to cause injury during use. The HPEG Element focused initial efforts on developing quantifiable and repeatable methodologies for assessing glove performance with respect to mobility, injury potential, thermal conductivity, and abrasion resistance. The team used these methodologies to establish requirements against which emerging technologies and glove designs can be assessed at both the component and assembly levels. The mobility performance testing methodology was an early focus for the HPEG team as it stems from collaborations between the SSA Development team and the JSC Anthropometry and Biomechanics Facility (ABF) that began investigating new methods for suited mobility and fit early in the Constellation Program. The combined HPEG and ABF team used lessons learned from the previous efforts as well as additional reviews of methodologies in physical and

  7. An Approach for Performance Based Glove Mobility Requirements

    NASA Technical Reports Server (NTRS)

    Aitchison, Lindsay; Benson, Elizabeth; England, Scott

    2016-01-01

    The Space Suit Assembly (SSA) Development Team at NASA Johnson Space Center has invested heavily in the advancement of rear-entry planetary exploration suit design but largely deferred development of extravehicular activity (EVA) glove designs, and accepted the risk of using the current flight gloves, Phase VI, for exploration missions. However, as design reference missions mature, the risks of using heritage hardware have highlighted the need for developing robust new glove technologies. To address the technology gap, the NASA Space Technology Mission Directorate's Game-Changing Development Program provided start-up funding for the High Performance EVA Glove (HPEG) Element as part of the Next Generation Life Support (NGLS) Project in the fall of 2013. The overarching goal of the HPEG Element is to develop a robust glove design that increases human performance during EVA and creates pathway for implementation of emergent technologies, with specific aims of increasing pressurized mobility to 60% of barehanded capability, increasing the durability in on-pristine environments, and decreasing the potential of gloves to cause injury during use. The HPEG Element focused initial efforts on developing quantifiable and repeatable methodologies for assessing glove performance with respect to mobility, injury potential, thermal conductivity, and abrasion resistance. The team used these methodologies to establish requirements against which emerging technologies and glove designs can be assessed at both the component and assembly levels. The mobility performance testing methodology was an early focus for the HPEG team as it stems from collaborations between the SSA Development team and the JSC Anthropometry and Biomechanics Facility (ABF) that began investigating new methods for suited mobility and fit early in the Constellation Program. The combined HPEG and ABF team used lessons learned from the previous efforts as well as additional reviews of methodologies in physical and

  8. An Approach for Performance Assessments of Extravehicular Activity Gloves

    NASA Technical Reports Server (NTRS)

    Aitchison, Lindsay; Benosn, Elizabeth

    2014-01-01

    The Space Suit Assembly (SSA) Development Team at NASA Johnson Space Center has invested heavily in the advancement of rear-entry planetary exploration suit design but largely deferred development of extravehicular activity (EVA) glove designs, and accepted the risk of using the current flight gloves, Phase VI, for unique mission scenarios outside the Space Shuttle and International Space Station (ISS) Program realm of experience. However, as design reference missions mature, the risks of using heritage hardware have highlighted the need for developing robust new glove technologies. To address the technology gap, the NASA Game-Changing Technology group provided start-up funding for the High Performance EVA Glove (HPEG) Project in the spring of 2012. The overarching goal of the HPEG Project is to develop a robust glove design that increases human performance during EVA and creates pathway for future implementation of emergent technologies, with specific aims of increasing pressurized mobility to 60% of barehanded capability, increasing the durability by 100%, and decreasing the potential of gloves to cause injury during use. The HPEG Project focused initial efforts on identifying potential new technologies and benchmarking the performance of current state of the art gloves to identify trends in design and fit leading to establish standards and metrics against which emerging technologies can be assessed at both the component and assembly levels. The first of the benchmarking tests evaluated the quantitative mobility performance and subjective fit of two sets of prototype EVA gloves developed ILC Dover and David Clark Company as compared to the Phase VI. Both companies were asked to design and fabricate gloves to the same set of NASA provided hand measurements (which corresponded to a single size of Phase Vi glove) and focus their efforts on improving mobility in the metacarpal phalangeal and carpometacarpal joints. Four test subjects representing the design-to hand

  9. Mapping From an Instrumented Glove to a Robot Hand

    NASA Technical Reports Server (NTRS)

    Goza, Michael

    2005-01-01

    An algorithm has been developed to solve the problem of mapping from (1) a glove instrumented with joint-angle sensors to (2) an anthropomorphic robot hand. Such a mapping is needed to generate control signals to make the robot hand mimic the configuration of the hand of a human attempting to control the robot. The mapping problem is complicated by uncertainties in sensor locations caused by variations in sizes and shapes of hands and variations in the fit of the glove. The present mapping algorithm is robust in the face of these uncertainties, largely because it includes a calibration sub-algorithm that inherently adapts the mapping to the specific hand and glove, without need for measuring the hand and without regard for goodness of fit. The algorithm utilizes a forward-kinematics model of the glove derived from documentation provided by the manufacturer of the glove. In this case, forward-kinematics model signifies a mathematical model of the glove fingertip positions as functions of the sensor readings. More specifically, given the sensor readings, the forward-kinematics model calculates the glove fingertip positions in a Cartesian reference frame nominally attached to the palm. The algorithm also utilizes an inverse-kinematics model of the robot hand. In this case, inverse-kinematics model signifies a mathematical model of the robot finger-joint angles as functions of the robot fingertip positions. Again, more specifically, the inverse-kinematics model calculates the finger-joint commands needed to place the fingertips at specified positions in a Cartesian reference frame that is attached to the palm of the robot hand and that nominally corresponds to the Cartesian reference frame attached to the palm of the glove. Initially, because of the aforementioned uncertainties, the glove fingertip positions calculated by the forwardkinematics model in the glove Cartesian reference frame cannot be expected to match the robot fingertip positions in the robot

  10. Benchmarking Evaluation Results for Prototype Extravehicular Activity Gloves

    NASA Technical Reports Server (NTRS)

    Aitchison, Lindsay; McFarland, Shane

    2012-01-01

    The Space Suit Assembly (SSA) Development Team at NASA Johnson Space Center has invested heavily in the advancement of rear-entry planetary exploration suit design but largely deferred development of extravehicular activity (EVA) glove designs, and accepted the risk of using the current flight gloves, Phase VI, for unique mission scenarios outside the Space Shuttle and International Space Station (ISS) Program realm of experience. However, as design reference missions mature, the risks of using heritage hardware have highlighted the need for developing robust new glove technologies. To address the technology gap, the NASA Game-Changing Technology group provided start-up funding for the High Performance EVA Glove (HPEG) Project in the spring of 2012. The overarching goal of the HPEG Project is to develop a robust glove design that increases human performance during EVA and creates pathway for future implementation of emergent technologies, with specific aims of increasing pressurized mobility to 60% of barehanded capability, increasing the durability by 100%, and decreasing the potential of gloves to cause injury during use. The HPEG Project focused initial efforts on identifying potential new technologies and benchmarking the performance of current state of the art gloves to identify trends in design and fit leading to establish standards and metrics against which emerging technologies can be assessed at both the component and assembly levels. The first of the benchmarking tests evaluated the quantitative mobility performance and subjective fit of four prototype gloves developed by Flagsuit LLC, Final Frontier Designs, LLC Dover, and David Clark Company as compared to the Phase VI. All of the companies were asked to design and fabricate gloves to the same set of NASA provided hand measurements (which corresponded to a single size of Phase Vi glove) and focus their efforts on improving mobility in the metacarpal phalangeal and carpometacarpal joints. Four test

  11. An Example of a Human Topological Rubber Glove Act

    NASA Astrophysics Data System (ADS)

    Chai Toong, Yock; Yung Wang, Shih

    1997-04-01

    A hitherto unreported human body narcissistic inversion which is an example of the rubber glove act has been uncovered from a Chinese acrobatic performance. This inversion is related to the unimolecular enantiomerizations of chiral molecules, a topological figure and a rubber glove via chiral pathway. The possible mechanism of enantiomerization of an unknown cyclopolypetide based on this finding is suggested. The importance of chemical topology in biomolecules is stressed.

  12. Usage of gloves for hair shampooing in German hairdressing salons.

    PubMed

    Dulon, Madeleine; Kähler, Björn; Kirvel, Sandra; Schlanstedt, Günter; Nienhaus, Albert

    2015-01-01

    Occupational skin disease caused by wet work is particularly common in employees in hairdressing salons. The objective of this paper was to determine the frequency of glove use for hair shampooing. Data on the usage of gloves for hair shampooing were collected by covert observations in four cross-sectional surveys of newly opened hairdressing salons located in Cologne. Measurements were conducted between 2009 and 2012. A team of five trained observers were involved in the measurements. As a second assessment method, salon owners of other newly opened salons from five districts of Germany were interviewed by telephone at three of the four measurement points. Trend analysis was performed with the Mantel-Haenszel test for trends and simple linear regression. Differences in proportions of glove use between the two assessment methods were compared by chi-squared tests. In total, 435 hair shampoos were observed and 630 salon owners interviewed. Gloves were worn in 14 % of the observed hair shampoos. Proportions of glove use differed significantly according to assessment measurement. Proportions of glove use assessed by covert observation increased from 10.5 % to 18.5 % (ptrend = 0.044) whereas the proportions obtained by telephone interview decreased over the study period from 84 % to 76 % (ptrend = 0.037). No trend was found for the intensity of glove use (ptrend = 0.204). Gloves were worn in less than 20 % of hair shampoos. This rate is much lower than values reported from other written or verbal surveys. Future measures for skin protection in hairdressing salons should take this into account.

  13. Secret Service wears gloves when gay officials come to visit.

    PubMed

    1995-06-30

    Secret Service security guards donned rubber gloves on June 13, 1995 to usher in forty gay and lesbian elected officials for a briefing by the Clinton administration at the Executive Office Building. A city councilman and a state representative attending the meeting asked the guards about the gloves and were told that they were for protection. The officials inferred that the guards were concerned about becoming infected with HIV. Several guests said the presence of the gloves was offensive. A spokesman for the Secret Service's uniformed division rejected the suggestion that the guards were concerned about HIV infection, but conceded that gloves are not normally worn when delegations of other elected officials come to the Executive Office Building. He also stated that the Secret Service gives rubber gloves to all uniformed security guards, and the guards have the prerogative of using them whenever they wish. A spokesman for National AIDS Policy Coordinator Patsy Fleming called the use of the gloves inappropriate, appalling and rude.

  14. Transmission of vibration through gloves: effects of material thickness.

    PubMed

    Md Rezali, Khairil Anas; Griffin, Michael J

    2016-08-01

    It might be assumed that increasing the thickness of a glove would reduce the vibration transmitted to the hand. Three material samples from an anti-vibration glove were stacked to produce three thicknesses: 6.4, 12.8 and 19.2 mm. The dynamic stiffnesses of all three thicknesses, the apparent mass at the palm and the finger and the transmission of vibration to the palm and finger were measured. At frequencies from 20 to 350 Hz, the material reduced vibration at the palm but increased vibration at the finger. Increased thickness reduced vibration at the palm but increased vibration at the finger. The measured transmissibilities could be predicted from the material dynamic stiffness and the apparent mass of the palm and finger. Reducing the dynamic stiffness of glove material may increase or decrease the transmission of vibration, depending on the material, the frequency of vibration and the location of measurement (palm or finger). Practitioner Summary: Transmission of vibration through gloves depends on the dynamic response of the hand and the dynamic stiffness of glove material, which depends on material thickness. Measuring the transmission of vibration through gloves to the palm of the hand gives a misleading indication of the transmission of vibration to the fingers.

  15. Can double gloves improve surgeon-patient barrier efficiency?

    PubMed

    Sadat-Ali, Mir; Al-Habdan, Ibrahim; AlBluwi, Mohammed; Corea, J Ran; Al-Othman, Abdallah; Shriyan, Devidas; Moussa, Mohammed; AlDhakheel, Dhakheel; AlOmran, Abdallah

    2006-01-01

    The aim of this study was to compare double gloves (DGs) with single gloves (SGs) during orthopedic and trauma surgery in prevention of blood contact between patients and surgeons. DGs and SGs were collected after orthopedic operations, tested for size, site, and number of perforations. Medical records were reviewed for age, sex, type of operation, duration, and postoperative wound infection. Data were compared using t-test with level of statistical significance at P < 0.05. Five hundred seven operations yielded 1204 DGs and 830 pairs SGs. In DGs, perforations were detected in 220 outer glove and 39 inner glove (10.7%). In SGs, 226 perforations were detected (13.3%). The incidence of perforations in inner gloves of the double indicator glove was 1.6% (P < 0.001). During surgery, perforations were recognized in DGs in 67% compared with 12% in SGs (P < 0.005). This study confirms that DGs form an efficient barrier between patients and surgeons.

  16. Protective gloves on manual sugar cane cutting are really effective?

    PubMed

    Abrahão, R F; Gonzaga, M C; Braunbeck, O A

    2012-01-01

    Problems related to the use of personal protective equipment (PPE), specially the use of protective gloves for the manual sugar cane cutting, motivated this research, made possible by a tripartite negotiation involving the Ministry of Labor, the Union of Rural Workers and the Employer's Association of sugarcane agribusiness. The main objective was to evaluate, from an ergonomics perspective, the impact of use of the gloves during the manual cane sugar cutting, raising questions on safety, effectiveness and comfort. The research was carried in a sugarcane industry of São Paulo for two seasons involving 47 workers who made a qualitative analysis of acceptance of four models of protective gloves. The methodology included the use of semi-structured interviews, questionnaires and field observations and the experimental determination of the coefficient of static friction developed between the gloves and the surfaces of the machete handle. The main results indicate the general inadequacy of the gloves currently used forcing the employees to improvise. Workers found the glove of leather and nylon scraping the best reported for comfort in use. The overall results highlight the problem of detachment of test standards for the manufacture of PPE, ignoring users and the activity to be performed.

  17. [Shielding ability of lead loaded radiation resistant gloves].

    PubMed

    Kawano, T; Ebihara, H

    1990-02-01

    The shielding ability of radiation resistant gloves was examined. The gloves are made of lead loaded (as PbO2) polyvinyl chloride resin and are about 0.4 mm in thickness (70 mg/cm2). Eleven test pieces were sampled from each of three gloves (total 33) and the transmission rates for radiations (X-ray or gamma-ray) through the test pieces were measured with radiation sources, 99mTc, 57Co, 133Ba, 133Xe and 241Am. The differences of the transmission rates for radiations by the positions of the gloves were smaller than 15%, and the differences by three gloves were smaller than 5% in the case of 60 keV and 141 keV radiations. The average transmission rates for radiations in the 33 test pieces were about 40% for 30 keV radiation, about 90% for 80 keV and 140 keV radiations. The shielding characteristic of the gloves is equivalent to about 0.026 mm thick lead plate.

  18. Washington State hospital survey 2000: gloves, handwashing agents, and moisturizers.

    PubMed

    Marino, C; Cohen, M

    2001-12-01

    Hand dermatitis as a result of frequent exposure to water and cleansing agents is a significant problem in the health care industry. In developing prevention efforts to address this problem, it is necessary to make appropriate recommendations for moisturizers that are compatible with latex gloves and/or handwashing agents that contain chlorhexidine gluconate (CHG). Infection control personnel or employee health nurses in all 106 Washington hospitals were interviewed to determine what types of gloves, handwashing agents, and moisturizers are in current use in the hospital setting. The interview also addressed awareness of skin care issues involving the compatibility of moisturizers with latex gloves and handwashing agents that contain CHG. Latex gloves were available in 90% of the hospitals. Handwashing agents containing CHG were available in 33% of the hospitals. Moisturizers were supplied for the nursing personnel in 61% of the hospitals; most of these moisturizers were compatible with latex gloves and agents containing CHG. Seventy-four percent of the infection control personnel were aware of the compatibility issues of petroleum-based moisturizers with latex gloves, and 48% were aware of the need to avoid the use of anionic moisturizers in combination with CHG handwashing agents.

  19. Allergologically relevant rubber accelerators in single-use medical gloves.

    PubMed

    Knudsen, B B; Hametner, C; Seycek, O; Heese, A; Koch, H U; Peters, K P

    2000-07-01

    To prevent contact with specific rubber accelerators, sensitized patients have to know in which glove brands these accelerators are present. Additionally, quantitative measurements of the bioavailable amounts of accelerators are needed to assist consumers in selecting gloves with the lowest possible amount of residual rubber accelerators. The aim of the study was to develop an analytical method by which residuals of rubber accelerators in single-use medical gloves could be determined qualitatively and quantitatively. 19 different glove brands were analysed for content of accelerators, and the results were compared to manufacturers' ingredient claims of the identical gloves. ZDEC, ZDBC, ZMBT and ZPC were the most frequently detected chemicals. In 9 of 15 gloves discrepancies were found, usually minor, between content of accelerators declared by manufacturers to be present and accelerators detected by analysis. Both phosphate buffer and acetone were tested as extraction media. No accelerators were detectable with the described chemical analysis in phosphate extracts, whereas acetone was demonstrated to be a technically suitable medium for extraction. However, more kinetic studies of the extraction procedure and studies of skin penetration are needed to document that the extraction procedure simulates the clinical situation.

  20. 21 CFR 800.20 - Patient examination gloves and surgeons' gloves; sample plans and test method for leakage defects...

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... infectious diseases. The Centers for Disease Control (CDC) recommend that health care workers wear medical gloves to reduce the risk of transmission of HIV and other blood-borne infectious deseases. The CDC...

  1. Assessment of skin exposure to N,N-dimethylformamide and methyl ethylketone through chemical protective gloves and decontamination of gloves for reuse purposes.

    PubMed

    Chao, Keh-Ping; Wang, Ping; Chen, Chen-Peng; Tang, Ping-Yu

    2011-02-15

    N,N-dimethylformamide (DMF) and methyl ethylketone (MEK) are the hazardous chemicals commonly used in the synthetic leather industries. Although chemical protective gloves provide adequate skin exposure protection to workers in these industries, there is currently no clear guideline or understanding with regard to the use duration of these gloves. In this study, the permeation of DMF/MEK mixture through neoprene gloves and the desorption of chemicals from contaminated gloves were conducted using the ASTM F739 cell. The acceptable use duration time of the gloves against DMF/MEK permeation was estimated by assuming a critical body burden of chemical exposure as a result of dermal absorption. In a re-exposure cycle of 5 days, decontamination of the gloves by aeration at 25°C was found to be inadequate in a reduction of breakthrough time as compared to a new unexposed glove. However, decontamination of the gloves by heating at 70 or 100°C showed that the protective coefficient of the exposed gloves had similar levels of resistance to DMF/MEK as that of new gloves. Implications of this study include an understanding of the use duration of neoprene gloves and proper decontamination of chemical protective gloves for reuse.

  2. Glove-Enabled Computer Operations (GECO): Design and Testing of an Extravehicular Activity Glove Adapted for Human-Computer Interface

    NASA Technical Reports Server (NTRS)

    Adams, Richard J.; Olowin, Aaron; Krepkovich, Eileen; Hannaford, Blake; Lindsay, Jack I. C.; Homer, Peter; Patrie, James T.; Sands, O. Scott

    2013-01-01

    The Glove-Enabled Computer Operations (GECO) system enables an extravehicular activity (EVA) glove to be dual-purposed as a human-computer interface device. This paper describes the design and human participant testing of a right-handed GECO glove in a pressurized glove box. As part of an investigation into the usability of the GECO system for EVA data entry, twenty participants were asked to complete activities including (1) a Simon Says Games in which they attempted to duplicate random sequences of targeted finger strikes and (2) a Text Entry activity in which they used the GECO glove to enter target phrases in two different virtual keyboard modes. In a within-subjects design, both activities were performed both with and without vibrotactile feedback. Participants mean accuracies in correctly generating finger strikes with the pressurized glove were surprisingly high, both with and without the benefit of tactile feedback. Five of the subjects achieved mean accuracies exceeding 99 in both conditions. In Text Entry, tactile feedback provided a statistically significant performance benefit, quantified by characters entered per minute, as well as reduction in error rate. Secondary analyses of responses to a NASA Task Loader Index (TLX) subjective workload assessments reveal a benefit for tactile feedback in GECO glove use for data entry. This first-ever investigation of employment of a pressurized EVA glove for human-computer interface opens up a wide range of future applications, including text chat communications, manipulation of procedureschecklists, cataloguingannotating images, scientific note taking, human-robot interaction, and control of suit andor other EVA systems.

  3. Glove-Enabled Computer Operations (GECO): Design and Testing of an Extravehicular Activity Glove Adapted for Human-Computer Interface

    NASA Technical Reports Server (NTRS)

    Adams, Richard J.; Olowin, Aaron; Krepkovich, Eileen; Hannaford, Blake; Lindsay, Jack I. C.; Homer, Peter; Patrie, James T.; Sands, O. Scott

    2013-01-01

    The Glove-Enabled Computer Operations (GECO) system enables an extravehicular activity (EVA) glove to be dual-purposed as a human-computer interface device. This paper describes the design and human participant testing of a right-handed GECO glove in a pressurized glove box. As part of an investigation into the usability of the GECO system for EVA data entry, twenty participants were asked to complete activities including (1) a Simon Says Games in which they attempted to duplicate random sequences of targeted finger strikes and (2) a Text Entry activity in which they used the GECO glove to enter target phrases in two different virtual keyboard modes. In a within-subjects design, both activities were performed both with and without vibrotactile feedback. Participants' mean accuracies in correctly generating finger strikes with the pressurized glove were surprisingly high, both with and without the benefit of tactile feedback. Five of the subjects achieved mean accuracies exceeding 99% in both conditions. In Text Entry, tactile feedback provided a statistically significant performance benefit, quantified by characters entered per minute, as well as reduction in error rate. Secondary analyses of responses to a NASA Task Loader Index (TLX) subjective workload assessments reveal a benefit for tactile feedback in GECO glove use for data entry. This first-ever investigation of employment of a pressurized EVA glove for human-computer interface opens up a wide range of future applications, including text "chat" communications, manipulation of procedures/checklists, cataloguing/annotating images, scientific note taking, human-robot interaction, and control of suit and/or other EVA systems.

  4. Glove port technique for transanal endoscopic microsurgery.

    PubMed

    Alessandro, Carrara; Daniela, Mangiola; Michele, Motter; Andrea, Tirone; Gianmarco, Ghezzi; Massimo, Silvestri; Orazio, Zappalà; Fabio, Gasperetti; Giuseppe, Tirone

    2012-01-01

    Introduction. Despite initial enthusiasm, the use of transanal endoscopic microsurgery (TEM) is still quite limited at present because of the expense of highly specialized equipment and the complexity of the learning curve. Furthermore, some authors report a relevant, although temporary, effect on anorectal function because of the considerable anal dilatation which can even produce a rupture of the internal anal sphincter. The "glove TEM" proposes itself as an alternative to traditional TEM that could settle these problems. Materials and Methods. The technique is accurately described together with the necessary equipment to perform it. Between 2011 and 2012, we operated eight patients with this technique for rectal adenomas or early carcinomas achieving R0 resection in all cases and reporting no early or late complications during the first five months of followup. Discussion. This technique offers multiple advantages compared to the original TEM. (i) It allows the use of all available laparoscopic instruments. (ii) It gives a great manoeuvrability of the instruments in contrast to rigid rectoscope systems. (iii) Given the limited length of the device, it permits to operate on tumors closer to the dentate line. (iv) It is less traumatic to the anal sphincter. It is definitively much cheaper. Conclusions. We believe that this new technique is easy to perform, cost-effective, and less traumatic to the anal sphincter compared to traditional TEM.

  5. Contamination of Critical Surfaces from NVR Glove Residues Via Dry Handling and Solvent Cleaning

    NASA Technical Reports Server (NTRS)

    Sovinski, Marjorie F.

    2004-01-01

    Gloves are often used to prevent the contamination of critical surfaces during handling. The type of glove chosen for use should be the glove that produces the least amount of non-volatile residue (NVR). This paper covers the analysis of polyethylene, nitrile, latex, vinyl, and polyurethane gloves using the contact transfer and gravimetric determination methods covered in the NASA GSFC work instruction Gravimetric Determination and Contact Transfer of Non-volatile Residue (NVR) in Cleanroom Glove Samples, 541-WI-5330.1.21 and in the ASTM Standard E-1731M-95, Standard Test Method for Gravimetric Determination of Non-Volatile Residue from Cleanroom Gloves. The tests performed focus on contamination of critical surfaces at the molecular level. The study found that for the most part, all of the gloves performed equally well in the contact transfer testing. However, the polyethylene gloves performed the best in the gravimetric determination testing, and therefore should be used whenever solvent contact is a possibility. The nitrile gloves may be used as a substitute for latex gloves when latex sensitivity is an issue. The use of vinyl gloves should be avoided, especially if solvent contact is a possibility. A glove database will be established by Goddard Space Flight Center (GSFC) Code 541 to compile the results from future testing of new gloves and different glove lots.

  6. CHARACTERIZATION OF GLOVEBOX GLOVES FOR THE SAVANNAH RIVER SITE

    SciTech Connect

    Korinko, P.

    2013-01-24

    A task was undertaken to characterize glovebox gloves that are currently used in the facilities at Savannah River Site (SRS) as well as some experimental and advanced compound gloves that have been proposed for use. Gloves from four manufacturers were tested for permeation in hydrogen and air, thermal stability, tensile properties, puncture resistance and dynamic mechanical response. The gloves were compared to each other within the type and also to the butyl rubber glove that is widely used at the SRS. The permeation testing demonstrated that the butyl compounds from three of the vendors behaved similarly and exhibited hydrogen permeabilities of .52‐.84 x10{sup ‐7} cc H{sub 2}*cm / (cm{sup 2}*atm). The Viton glove performed at the lower edge of this bound, while the more advanced composite gloves exhibited permeabilities greater than a factor of two compared to butyl. Thermogravimetric analysis was used to determine the amount of material lost under slightly aggressive conditions. Glove losses are important since they can affect the life of glovebox stripper systems. During testing at 90, 120, and 150°C, the samples lost most of the mass in the initial 60 minutes of thermal exposure and as expected increasing the temperature increased the mass loss and shortened the time to achieve a steady state loss. The ranking from worst to best was Jung butyl‐Hypalon with 12.9 %, Piercan Hypalon with 11.4 %, and Jung butyl‐Viton with 5.2% mass loss all at approximately 140°C. The smallest mass losses were experienced by the Jung Viton and the Piercan polyurethane. Tensile properties were measured using a standard dog bone style test. The butyl rubber exhibited tensile strengths of 11‐15 MPa and elongations or 660‐843%. Gloves made from other compounds exhibited lower tensile strengths (5 MPa Viton) to much higher tensile strengths (49 MPa Urethane) with a comparable range of elongation. The puncture resistance of the gloves was measured

  7. Changes in Chemical Permeation of Disposable Latex, Nitrile and Vinyl Gloves Exposed to Simulated Movement

    PubMed Central

    Phalen, Robert N.; Le, Thi; Wong, Weng Kee

    2014-01-01

    Glove movement can affect chemical permeation of organic compounds through polymer glove products. However, conflicting reports make it difficult to compare the effects of movement on chemical permeation through commonly available glove types. This study was aimed to evaluate the effect of movement on chemical permeation of an organic solvent through disposable latex, nitrile, and vinyl gloves. Simulated whole-glove permeation testing was conducted using ethyl alcohol and a previously designed permeation test system. With exposure to movement, a significant decrease (p ≤ 0.001) in breakthrough time was observed for the latex (-23%) and nitrile gloves (-31%). With exposure to movement, only the nitrile glove exhibited a significant increase (p ≤ 0.001) in steady-state permeation rate (+47%) and cumulative permeation at 30 min (+111%). Even though the nitrile glove provided optimum chemical resistance against ethyl alcohol, it was most affected by movement. With exposure to movement, the latex glove was an equivalent option for overall worker protection, because it was less affected by movement and the permeation rate was lower than that of the nitrile glove. In contrast, the vinyl glove was the least affected by movement, but did not provide adequate chemical resistance to ethyl alcohol in comparison with the nitrile and latex gloves. In conclusion, glove selection should take movement and polymer type into account. Some glove polymer types are less affected by movement, most notably the latex glove in this test. With nitrile gloves, at least a factor of three should be used when attempting to assign a protection factor when repetitive hand motions are anticipated. Ultimately, the latex gloves outperformed nitrile and vinyl in these tests, which evaluated the effect of movement on chemical permeation. Future research should aim to resolve some of the observed discrepancies in test results with latex and vinyl gloves. PMID:24689368

  8. Changes in chemical permeation of disposable latex, nitrile, and vinyl gloves exposed to simulated movement.

    PubMed

    Phalen, Robert N; Le, Thi; Wong, Weng Kee

    2014-01-01

    Glove movement can affect chemical permeation of organic compounds through polymer glove products. However, conflicting reports make it difficult to compare the effects of movement on chemical permeation through commonly available glove types. The aim of this study was to evaluate the effect of movement on chemical permeation of an organic solvent through disposable latex, nitrile, and vinyl gloves. Simulated whole-glove permeation testing was conducted using ethyl alcohol and a previously designed permeation test system. With exposure to movement, a significant decrease (p ≤ 0.001) in breakthrough time (BT) was observed for the latex (-23%) and nitrile gloves (-31%). With exposure to movement, only the nitrile glove exhibited a significant increase (p ≤ 0.001) in steady-state permeation rate (+47%) and cumulative permeation at 30 min (+111%). Even though the nitrile glove provided optimum chemical resistance against ethyl alcohol, it was most affected by movement. With exposure to movement, the latex glove was an equivalent option for overall worker protection, because it was less affected by movement and the permeation rate was lower than that of the nitrile glove. In contrast, the vinyl glove was the least affected by movement, but did not provide adequate chemical resistance to ethyl alcohol in comparison with the nitrile and latex gloves. Glove selection should take movement and polymer type into account. Some glove polymer types are less affected by movement, most notably the latex glove in this test. With nitrile gloves, at least a factor of three should be used when attempting to assign a protection factor when repetitive hand motions are anticipated. Ultimately, the latex gloves outperformed nitrile and vinyl in these tests, which evaluated the effect of movement on chemical permeation. Future research should aim to resolve some of the observed discrepancies in test results with latex and vinyl gloves.

  9. The One in the Purple Suit.

    ERIC Educational Resources Information Center

    Sargeant, Hope

    2003-01-01

    In this article, a parent of a gifted child muses on the challenges of raising her daughter, coping with her daughter's frustrations, her decision to stay home, and her brief envy of a doppelganger, a professional in a purple suit. (CR)

  10. The One in the Purple Suit.

    ERIC Educational Resources Information Center

    Sargeant, Hope

    2003-01-01

    In this article, a parent of a gifted child muses on the challenges of raising her daughter, coping with her daughter's frustrations, her decision to stay home, and her brief envy of a doppelganger, a professional in a purple suit. (CR)

  11. Effect of latex glove contamination on bond strength.

    PubMed

    Roberts, Howard W; Bartoloni, Joseph

    2002-01-01

    This study examined the effect of powdered and powder-free latex glove contamination on bond strength. Sixty caries-free human third molars were mounted in acrylic, sectioned with a diamond saw to expose a flat occlusal dentin surface, and finished with 400- and 600-grit silicon carbide paper. Teeth were assigned to one of 5 groups: 1) no latex glove contamination (control); 2) powdered latex glove contamination before etching; 3) powder-free latex glove contamination before etching; 4) powdered latex glove contamination after dentin bonding agent application but prior to resin composite placement; 5) powder-free latex glove contamination after dentin bonding agent application but prior to resin composite placement. Excite dentin bonding agent was used per manufacturer's instructions. Z-250 resin composite was applied in 2- x 2-mm increments using a split Teflon mold, each light cured for 20 s. Bonded samples were thermocycled 500 cycles between 5 degrees C and 55 degrees C water baths. Specimens were stored in 37 degrees C distilled water. One-week shear bond strength values were determined using a Tinius Olsen testing machine at a crosshead speed of 0.5 mm/min. Results were analyzed with one-way ANOVA (alpha = 0.05). No significant difference (p = 0.47) in bond strength was found between the experimental groups and the control. Groups 1, 2, 3, and 5 exhibited predominantly mixed failures while the majority of samples in Group 4 showed adhesive failures. Under the conditions of this study, contamination of dentin by powdered or powder-free latex gloves did not significantly affect bond strength. Future research should be directed toward evaluating the effects of dentin contamination on bond strength of other bonding agents and include ultrastuctural examination in determining what role, if any, powder plays as a contaminant.

  12. Aircraft energy efficiency laminar flow control glove flight conceptual design study

    NASA Technical Reports Server (NTRS)

    Wright, A. S.

    1979-01-01

    A laminar flow control glove applied to the wing of a short to medium range jet transport with aft mounted engines was designed. A slotted aluminum glove concept and a woven stainless steel mesh porous glove concept suction surfaces were studied. The laminar flow control glove and a dummy glove with a modified supercritical airfoil, ducting, modified wing leading and trailing edges, modified flaps, and an LFC trim tab were applied to the wing after slot spacing suction parameters, and compression power were determined. The results show that a laminar flow control glove can be applied to the wing of a jet transport with an appropriate suction system installed.

  13. Exogrip: assisted hand strength glove - biomed 2011.

    PubMed

    Best, Jade E; Bostick, Nehemiah F; Connelly, John R; Dunn, Michael G; Gelles, Richard A; Norvell, Elizabeth K; Waugaman, William B; Mims, Capt Willie H

    2011-01-01

    A large number of American troops fighting in Afghanistan and Iraq have received wounds in their upper extremities leading to significant nerve damage and loss of strength. These injuries impair their ability to perform day-to-day tasks such as lifting a cup of coffee or opening a door. Although the cause of some injuries in service-people is often unique to their employment, civilian employees in other industries are also plagued with similar physical damage due to other kinds of injuries. Our goal is to develop a device to augment the strength of injured troops and civilian workers so they can perform everyday tasks despite their physical limitations. The ExoGrip is a glove designed to provide this necessary strength augmentation. The ExoGrip consists primarily of pressure sensors, linear actuators, and a microcontroller to provide a force multiplier based on a person’s strength. The goal of the first phase of the project was to conduct research and also produce a working prototype of one finger. This goal was achieved by a group of classmates who started the project a year before. Their research and feasibility analysis ended in the mechanical movement of a single finger when the sensors were activated. The next phase of this project is to design and integrate a working prototype that manipulates all four fingers, while keeping the thumb in a fixed position. This paper describes the integration of new microcontrollers, linear actuators utilizing pulse width modulation technology, and improved pressure sensors needed to manipulate the fingers, as well as laying the foundation for future testing and development of a final product.

  14. Risk of surgical glove perforation in oral and maxillofacial surgery.

    PubMed

    Kuroyanagi, N; Nagao, T; Sakuma, H; Miyachi, H; Ochiai, S; Kimura, Y; Fukano, H; Shimozato, K

    2012-08-01

    Oral and maxillofacial surgery, which involves several sharp instruments and fixation materials, is consistently at a high risk for cross-contamination due to perforated gloves, but it is unclear how often such perforations occur. This study aimed to address this issue. The frequency of the perforation of surgical gloves (n=1436) in 150 oral and maxillofacial surgeries including orthognathic surgery (n=45) was assessed by the hydroinsufflation technique. Orthognathic surgery had the highest perforation rate in at least 1 glove in 1 operation (91.1%), followed by cleft lip and palate surgery (55.0%), excision of oral soft tumour (54.5%) and dental implantation (50.0%). The perforation rate in scrub nurses was 63.4%, followed by 44.4% in surgeons and first assistants, and 16.3% in second assistants. The odds ratio for the perforation rate in orthognathic surgery versus other surgeries was 16.0 (95% confidence interval: 5.3-48.0). The protection rate offered by double gloving in orthognathic surgery was 95.2%. These results suggest that, regardless of the surgical duration and blood loss in all fields of surgery, orthognathic surgery must be categorized in the highest risk group for glove perforation, following gynaecological and open lung surgery, due to the involvement of sharp objects.

  15. Decrease the Number of Glovebox Glove Breaches and Failures

    SciTech Connect

    Hurtle, Jackie C.

    2013-12-24

    Los Alamos National Laboratory (LANL) is committed to the protection of the workers, public, and environment while performing work and uses gloveboxes as engineered controls to protect workers from exposure to hazardous materials while performing plutonium operations. Glovebox gloves are a weak link in the engineered controls and are a major cause of radiation contamination events which can result in potential worker exposure and localized contamination making operational areas off-limits and putting programmatic work on hold. Each day of lost opportunity at Technical Area (TA) 55, Plutonium Facility (PF) 4 is estimated at $1.36 million. Between July 2011 and June 2013, TA-55-PF-4 had 65 glovebox glove breaches and failures with an average of 2.7 per month. The glovebox work follows the five step safety process promoted at LANL with a decision diamond interjected for whether or not a glove breach or failure event occurred in the course of performing glovebox work. In the event that no glove breach or failure is detected, there is an additional decision for whether or not contamination is detected. In the event that contamination is detected, the possibility for a glove breach or failure event is revisited.

  16. Data-glove-based fuzzy control of piezoelectric forceps actuator

    NASA Astrophysics Data System (ADS)

    Susanto, Ken; Yang, Bingen

    2004-07-01

    This paper discusses a novel concept idea of utilizing smart structure in biomedical, minimum invasive surgery (MIS), MEMS manufacturing assembly line and also as a miniature robotic gripper system. The proposed prototype of a miniature piezoelectric forceps actuator (PFA) is composed of two symmetric slightly curved composite beams which each bonded with piezoelectric ceramic layer. The PFA is an innovative forceps actuator that comes with a data glove. The data glove is simply a custom-made glove with two embedded resistance-bending sensors located on thumb and index fingers. Any users can control opening and closing of the PFA by just wearing the data glove. A thin curved beam theory bonded with piezoelectric ceramic will be derived based on Hamilton's principle and its deflection behavior will be simulated based on distributed transfer function method (DTFM). A feasibility study of simulation open loop data glove-based fuzzy logic controller allows the user to open and close the PFA remotely. The bending movement of the thumb and index finger will be formulated in a table of rules based to produce the necessary output controller gain to control the PFA.

  17. Glove thermal insulation: local heat transfer measures and relevance.

    PubMed

    Sari, Hayet; Gartner, Maurice; Hoeft, Alain; Candas, Victor

    2004-09-01

    When exposed to cold, the hands need to be protected against heat loss not only in order to reduce thermal discomfort, but also to keep their efficiency. Although gloves are usually the most common protection, their thermal insulation is generally unknown. The aim of this study was to measure the heat losses from a gloved hand with a special interest in local variations. Using a calorimetric hand placed in a cold box, several types of gloves were tested. The results indicated that depending on the glove and on the area covered the heat loss reduction may vary from almost 60% to 90%. When the least efficient pair of gloves was excluded, heat exchange coefficients varied from 1.8 to 4.8 W/m2 per degrees C for the palm and from 4.2 to 6.2 W/m2 per degrees C for the back of the hand. The three medium fingers seemed to be equally treated, with a heat exchange coefficient variation of 6.3-9.0 W/m2 per degrees C. The thumb and the little finger, which require better insulation, exhibited higher local heat transfer coefficients of 8.3-12.7 W/m2 per degrees C. Some practical aspects are evoked.

  18. Wearable joystick for gloves-on human/computer interaction

    NASA Astrophysics Data System (ADS)

    Bae, Jaewook; Voyles, Richard M.

    2006-05-01

    In this paper, we present preliminary work on a novel wearable joystick for gloves-on human/computer interaction in hazardous environments. Interacting with traditional input devices can be clumsy and inconvenient for the operator in hazardous environments due to the bulkiness of multiple system components and troublesome wires. During a collapsed structure search, for example, protective clothing, uneven footing, and "snag" points in the environment can render traditional input devices impractical. Wearable computing has been studied by various researchers to increase the portability of devices and to improve the proprioceptive sense of the wearer's intentions. Specifically, glove-like input devices to recognize hand gestures have been developed for general-purpose applications. But, regardless of their performance, prior gloves have been fragile and cumbersome to use in rough environments. In this paper, we present a new wearable joystick to remove the wires from a simple, two-degree of freedom glove interface. Thus, we develop a wearable joystick that is low cost, durable and robust, and wire-free at the glove. In order to evaluate the wearable joystick, we take into consideration two metrics during operator tests of a commercial robot: task completion time and path tortuosity. We employ fractal analysis to measure path tortuosity. Preliminary user test results are presented that compare the performance of both a wearable joystick and a traditional joystick.

  19. Effects of a protective foam on scrubbing and gloving.

    PubMed

    Larson, E; Anderson, J K; Baxendale, L; Bobo, L

    1993-12-01

    To test the effects of a skin protectant on surgical scrub and glove integrity. Forty-nine healthy adult volunteers were assigned (12 subjects per group) to apply a protective foam (DermaMed; Benchmark Enterprises, Salt Lake City, Utah) in conjunction with surgical scrub in one of the following formulations: 70% isopropyl alcohol, a liquid detergent base containing 4% chlorhexidine gluconate, a liquid detergent base containing 7.5% povidone-iodine, or a nonantimicrobial liquid soap (control). According to a standard protocol, subjects performed a surgical scrub on 3 days (every other day). Foam was applied after surgical scrub on day 1 and before surgical scrub on day 3. No foam was applied on day 2. Subjects were gloved for 2 hours after surgical scrub. Laboratory setting. On all test days, there were significant differences in bacterial reduction by products (chlorhexidine gluconate or alcohol > povidone-iodine > control). When controlling for baseline counts and products used, there were no significant differences in colony-forming unit counts on hands with or without foam immediately after scrubbing or at 2 hours after scrub on gloved or ungloved hands, nor were there differences in glove leakage rates when foam was on hands. Such protectants can be used without detrimental effects to scrub effectiveness or glove integrity.

  20. On permeability of methyl methacrylate, 2-hydroxyethyl methacrylate and triethyleneglycol dimethacrylate through protective gloves in dentistry.

    PubMed

    Andreasson, Harriet; Boman, Anders; Johnsson, Stina; Karlsson, Stig; Barregård, Lars

    2003-12-01

    Continuous glove use is more common in dentistry than in most other occupations, and the glove should offer protection against blood-borne infections, skin irritants and contact allergens. Methacrylate monomers are potent contact allergens, and it is known that these substances may penetrate the glove materials commonly used. The aim of this study was to assess the permeability of various types of gloves to methyl methacrylate (MMA), 2-hydroxyethyl methacrylate (HEMA) and triethyleneglycol dimethacrylate (TEGDMA) with special reference to combinations with ethanol or acetone. The permeation rate and time lag breakthrough (lag-BT) for MMA (neat, or diluted to 30% in ethanol or acetone), HEMA (30% in water, ethanol, or acetone) and TEGDMA (30% in ethanol or acetone) were investigated for different protective gloves. Nine different types of gloves were tested for one or several of these methacrylates. The lag-BT for neat MMA was gloves. For 30% MMA in ethanol or acetone, the latex gloves and the polyethene-copolymer glove showed the best protection, but the lag-BTs were short for all gloves. For HEMA and TEGDMA, the lag-BTs were generally longer than for MMA. A neoprene glove seemed to be the best choice for protection against penetration of HEMA and TEGDMA. The decision on which types of gloves to use should also take into account the risks of latex allergy and contact allergy to rubber chemicals and the convenience of the gloves for fine manual work.

  1. The influence of hydrogen peroxide on the permeability of protective gloves to resorcinol in hairdressing.

    PubMed

    Lind, Marie-Louise; Johnsson, Stina; Lidén, Carola; Meding, Birgitta; Boman, Anders

    2015-01-01

    Hairdressers are exposed to hair dye chemicals, for example resorcinol and hydrogen peroxide. Adequate skin protection is an important preventive measure against occupational skin disease. To examine whether hydrogen peroxide may cause deterioration of protective gloves. Permeation of resorcinol through gloves of polyvinylchloride (PVC) (n = 8), natural rubber latex (NRL) (n = 5) and nitrile rubber (NR) (n = 5) was studied in a two-compartment cell, with resorcinol as an indicator for hair dyes. The amount of resorcinol that had permeated was analysed with a high-performance liquid chromatography instrument. Cumulative breakthrough time and permeation rate were compared for hydrogen peroxide-pretreated and untreated gloves. The cumulative breakthrough time was > 1 hr but < 4 hr for all tested gloves. Pretreatment of PVC gloves resulted in a slightly decreased breakthrough time, and pretreatment of NRL gloves decreased the permeation rate. No change was recorded in NR gloves. Treatment with hydrogen peroxide had a minor effect on permeation in the tested gloves. NR gloves provided the best protection. However, taking the allergy risk of rubber gloves into account, plastic gloves are recommended in hairdressing. PVC gloves may be used, but not for > 1 hr. Disposable gloves should never be reused, regardless of material. © 2014 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.

  2. Human-computer interface glove using flexible piezoelectric sensors

    NASA Astrophysics Data System (ADS)

    Cha, Youngsu; Seo, Jeonggyu; Kim, Jun-Sik; Park, Jung-Min

    2017-05-01

    In this note, we propose a human-computer interface glove based on flexible piezoelectric sensors. We select polyvinylidene fluoride as the piezoelectric material for the sensors because of advantages such as a steady piezoelectric characteristic and good flexibility. The sensors are installed in a fabric glove by means of pockets and Velcro bands. We detect changes in the angles of the finger joints from the outputs of the sensors, and use them for controlling a virtual hand that is utilized in virtual object manipulation. To assess the sensing ability of the piezoelectric sensors, we compare the processed angles from the sensor outputs with the real angles from a camera recoding. With good agreement between the processed and real angles, we successfully demonstrate the user interaction system with the virtual hand and interface glove based on the flexible piezoelectric sensors, for four hand motions: fist clenching, pinching, touching, and grasping.

  3. The manufacture of gloves from natural rubber latex.

    PubMed

    Yip, Esah; Cacioli, Paul

    2002-08-01

    Gloves that will provide a barrier of protection from infectious organisms are an essential feature of medical practice for the protection of both patients and medical personnel. Natural rubber latex has consistently been the most satisfactory raw material for the manufacture of gloves. Certain latex proteins, carried over into the finished product by inadequate manufacturing processes, may pose a risk of provoking allergic reactions in some patients and medical workers. As with any allergy, the risk depends on the route of exposure and dose. Hence, the method of manufacture, including the means used to coat gloves to make donning easy, can influence the eventual exposure of sensitive people to latex allergens. In this article, we describe the several processes in use and their effects on latex protein content.

  4. [Assessment of protective properties of gloves used in manufacturing of fiber glass products].

    PubMed

    Sul'zhenko, A I

    1990-01-01

    The article deals with an account of occurrence and specific features of protecting gloves' damages and contamination of their inner surfaces. The results proved that rubber and knitter gloves cannot protect the hands adequately and must be changed.

  5. PLAY HANDS PROTECTIVE GLOVES: TECHNICAL NOTE ON DESIGN AND CONCEPT

    PubMed Central

    Houston-Hicks, Michele; Lura, Derek J.; Highsmith, M. Jason

    2016-01-01

    Cerebral Palsy (CP) is the leading cause of childhood motor disability, with a global incidence of 1.6 to 2.5/1,000 live births. Approximately 23% of children with CP are dependent upon assistive technologies. Some children with developmental disabilities have self-injurious behaviors such as finger biting but also have therapeutic needs. The purpose of this technical note is to describe design considerations for a protective glove and finger covering that maintains finger dexterity for children who exhibit finger and hand chewing (dermatophagia) and require therapeutic range of motion and may benefit from sensory stimulation resulting from constant contact between glove and skin. Protecting Little and Adolescent Youth (PLAY) Hands are protective gloves for children with developmental disorders such as CP who injure themselves by biting their hands due to pain or sensory issues. PLAY Hands will be cosmetically appealing gloves that provide therapeutic warmth, tactile sensory feedback, range of motion for donning/ doffing, and protection to maximize function and quality of life for families of children with developmental disorders. The technology is either a per-finger protective orthosis or an entire glove solution designed from durable 3D-printed biodegradable/bioabsorbable materials such as thermoplastics. PLAY Hands represent a series of protective hand wear interventions in the areas of self-mutilating behavior, kinematics, and sensation. They will be made available in a range of protective iterations from single- or multi-digit finger orthoses to a basic glove design to a more structurally robust and protective iteration. To improve the quality of life for patients and caregivers, they are conceptualized to be cosmetically appealing, protective, and therapeutic. PMID:28066530

  6. Mechanisms to improve the mechanical performance of surgical gloves

    NASA Astrophysics Data System (ADS)

    Watkins, Michelle Hoyt

    1997-11-01

    The use of gloves as a barrier to cross infection in the medical industry has increased substantially due to the heightened awareness of viral transmission, especially the human immunodeficiency virus and the hepatitis B virus. The glove must allow for tactile sensation, comfort and long use times, while providing equally critical mechanical performance. The majority of surgical gloves are made of natural rubber latex which do not give a critical level of cut-resistance or puncture-resistance. Natural rubber latex gloves are also known to cause latex allergy with hypersensitivity reactions ranging from mild skin rashes to more severe bronchial asthma, anaphylactic reactions, and even death. It has been postulated natural rubber latex (NRL) proteins cause these allergic reactions. The research that has been conducted comprises two approaches that have been explored for improving the cut-resistance of surgical gloves. The first method involves an integral fiber-latex structure that possesses the combination of high reversible extensibility, barrier performance and retention of tactile sense. Improvement in mechanical properties in excess of 85% has been achieved as well as an improvement in cut-resistance. The second method involves the incorporation of a low concentration of ultra high molecular weight (UHMW) polyacrylamide. Although the initial premise for using a UHMW polymer was that it would bridge the latex compound particulates to improve strength, an entirely different mechanism for the enhancement of strength was explored through a parallel investigation of the release of proteins from cured natural rubber. However, no mechanism was conclusively identified. To address the allergy aspects of NRL, a thorough examination of the release of naturally-occurring latex proteins from cured natural rubber latex glove material was conducted in order to identify mechanisms for eliminating and/or reducing the potential allergens. The initial study examined the release of

  7. Anthropomorphic teleoperation: Controlling remote manipulators with the DataGlove

    NASA Technical Reports Server (NTRS)

    Hale, J. P., II

    1992-01-01

    A two phase effort was conducted to assess the capabilities and limitations of the DataGlove, a lightweight glove input device that can output signals in real-time based on hand shape, orientation, and movement. The first phase was a period for system integration, checkout, and familiarization in a virtual environment. The second phase was a formal experiment using the DataGlove as input device to control the protoflight manipulator arm (PFMA) - a large telerobotic arm with an 8-ft reach. The first phase was used to explore and understand how the DataGlove functions in a virtual environment, build a virtual PFMA, and consider and select a reasonable teleoperation control methodology. Twelve volunteers (six males and six females) participated in a 2 x 3 (x 2) full-factorial formal experiment using the DataGlove to control the PFMA in a simple retraction, slewing, and insertion task. Two within-subjects variables, time delay (0, 1, and 2 seconds) and PFMA wrist flexibility (rigid/flexible), were manipulated. Gender served as a blocking variable. A main effect of time delay was found for slewing and total task times. Correlations among questionnaire responses, and between questionnaire responses and session mean scores and gender were computed. The experimental data were also compared with data collected in another study that used a six degree-of-freedom handcontroller to control the PFMA in the same task. It was concluded that the DataGlove is a legitimate teleoperations input device that provides a natural, intuitive user interface. From an operational point of view, it compares favorably with other 'standard' telerobotic input devices and should be considered in future trades in teleoperation systems' designs.

  8. Tool-specific performance of vibration-reducing gloves for attenuating fingers-transmitted vibration

    PubMed Central

    Welcome, Daniel E.; Dong, Ren G.; Xu, Xueyan S.; Warren, Christopher; McDowell, Thomas W.

    2016-01-01

    BACKGROUND Fingers-transmitted vibration can cause vibration-induced white finger. The effectiveness of vibration-reducing (VR) gloves for reducing hand transmitted vibration to the fingers has not been sufficiently examined. OBJECTIVE The objective of this study is to examine tool-specific performance of VR gloves for reducing finger-transmitted vibrations in three orthogonal directions (3D) from powered hand tools. METHODS A transfer function method was used to estimate the tool-specific effectiveness of four typical VR gloves. The transfer functions of the VR glove fingers in three directions were either measured in this study or during a previous study using a 3D laser vibrometer. More than seventy vibration spectra of various tools or machines were used in the estimations. RESULTS When assessed based on frequency-weighted acceleration, the gloves provided little vibration reduction. In some cases, the gloves amplified the vibration by more than 10%, especially the neoprene glove. However, the neoprene glove did the best when the assessment was based on unweighted acceleration. The neoprene glove was able to reduce the vibration by 10% or more of the unweighted vibration for 27 out of the 79 tools. If the dominant vibration of a tool handle or workpiece was in the shear direction relative to the fingers, as observed in the operation of needle scalers, hammer chisels, and bucking bars, the gloves did not reduce the vibration but increased it. CONCLUSIONS This study confirmed that the effectiveness for reducing vibration varied with the gloves and the vibration reduction of each glove depended on tool, vibration direction to the fingers, and finger location. VR gloves, including certified anti-vibration gloves do not provide much vibration reduction when judged based on frequency-weighted acceleration. However, some of the VR gloves can provide more than 10% reduction of the unweighted vibration for some tools or workpieces. Tools and gloves can be matched for

  9. Comparing the level of dexterity offered by latex and nitrile SafeSkin gloves.

    PubMed

    Sawyer, Jo; Bennett, Allan

    2006-04-01

    An increase in the occurrence of latex allergy has been concurrent with the increasing use of latex gloves by laboratory and healthcare workers. In recent years nitrile gloves have been used to replace latex gloves to prevent latex allergy. Nitrile gloves offer a comparable level of protection against chemical and biological agents and are more puncture resistant. However, if manual dexterity is compromised by nitrile gloves to a greater degree than latex then this may increase the risk of sharps injuries. The Purdue pegboard test, which measures both gross and fine finger dexterity, was used to test the dexterity levels of two glove types used at HPA CEPR; Kimberly-Clark SafeSkin nitrile and latex laboratory gloves. There was a statistically significant 8.6% increase in fine finger dexterity provided by latex compared with nitrile SafeSkin laboratory gloves but no difference in gross dexterity between the glove types. There was no significant relationship between glove dexterity and age or gender. The selection of glove size was influenced by the digit length of participants. Moreover, those with longer, thinner fingers appeared to have an advantage when using nitrile SafeSkin gloves. The level of dexterity provided by latex and nitrile SafeSkin gloves for tasks on a gross dexterity level are comparable and health workers will benefit from the non-allergenic properties of nitrile. For tasks requiring fine finger dexterity nitrile SafeSkin gloves may impede dexterity. Despite this, the degree of restriction appears to have a negligible impact on safety in this study when compared with the risk of latex sensitization and subsequent allergy. In addition to glove material, working practices must also take into account glove size, fit, grip and thickness, as these factors can all influence dexterity.

  10. Nine-size system for chemical defense gloves. Technical report

    SciTech Connect

    Robinette, K.M.; Annis, J.F.

    1986-07-01

    The purpose of this effort was to meet the need for improved sizing of chemical defense gloves for Air Force men and women. A nine-size system was developed from available hand data. The development process and size values are presented in this report. Some summary statistics and regression equations are provided to aid investigators who may wish to make modifications. Although the anthropometric sizing system outlined in this report is statistically sound, it is experimental. The authors recommend that anthropometric fit-testing be conducted prior to full-scale glove production.

  11. Telepresence Master Glove Controller For Dexterous Robotic End-Effectors

    NASA Astrophysics Data System (ADS)

    Fowler, A. M.; Joyce, R. R.; Britt, J. P.

    1987-03-01

    This paper describes recent research in the Aerospace Human Factors Research Division at NASA's Ames Research Center to develop a glove-like, control and data-recording device (DataGlove) that records and transmits to a host computerin real time, and at appropriate resolution, a numeric data-record of a user's hand/finger shape and dynamics. System configuration and performance specifications are detailed, and current research is discussed investigating its applications in operator control of dexterous robotic end-effectors and for use as a human factors research tool in evaluation of operator hand function requirements and performance in other specialized task environments.

  12. Telepresence master glove controller for dexterous robotic end-effectors

    NASA Technical Reports Server (NTRS)

    Fisher, Scott S.

    1987-01-01

    This paper describes recent research in the Aerospace Human Factors Research Division at NASA's Ames Research Center to develop a glove-like, control and data-recording device (DataGlove) that records and transmits to a host computer in real time, and at appropriate resolution, a numeric data-record of a user's hand/finger shape and dynamics. System configuration and performance specifications are detailed, and current research is discussed investigating its applications in operator control of dexterous robotic end-effectors and for use as a human factors research tool in evaluation of operator hand function requirements and performance in other specialized task environments.

  13. Ecological role of purple sea urchins.

    PubMed

    Pearse, John S

    2006-11-10

    Sea urchins are major components of marine communities. Their grazing limits algal biomass, and they are preyed upon by many predators. Purple sea urchins (Strongylocentrotus purpuratus) are among the best studied species. They live in environments that alternate between two stable states: luxuriant, species-rich kelp forests and sea urchin-dominated "barrens." The transition from one state to the other can be initiated by several factors, including the abundance of algal food, predators, storm intensities, and incidence of disease. Purple sea urchins compete with other grazers, some of which are important fishery resources (such as abalones and red sea urchins), and they are harvested for scientific research. Revelations from their genome will lead to a better understanding of how they maintain their ecological importance, and may in turn enhance their economic potential.

  14. Resonance Raman studies of the purple membrane.

    PubMed

    Aton, B; Doukas, A G; Callender, R H; Becher, B; Ebrey, T G

    1977-06-28

    The individual resonance Raman spectra of the PM568 and M412 forms of light-adapted purple membrane from Halobacterium halobium have been measured using the newly developed flow technique. For comparison purposes, the Raman spectra of the model chromophores, all-trans- and 13-cis retinal n-butylamine, both as protonated and unprotonated Schiff bases, have also been obtained. In agreement with previous work, the Raman data indicate that the retinal chromophore is linked to the purple membrane protein via a protonated. Schiff base in the case of the PM568 and an unprotonated Schiff base for the M412 form. The basic mechanism for color regulation in both forms appears to be electron delocalization. The spectral features of the two forms are different from each other and different from the model compound spectra.

  15. Purple Rose of Cairo in Reverse

    NASA Astrophysics Data System (ADS)

    Câmara, António

    In Woody Allen's Purple Rose of Cairo, an actor could leave the film and become real. There are virtual reality (VR) technologies that may enable to achieve the reverse: a spectator entering the movie and interacting with people and objects. But in VR, one needs to develop costly synthetic worlds that are not real. With augmented reality (AR), one superimposes synthetic over real images. It is less expensive and more realistic.

  16. Transmembrane Location of Retinal in Purple Membrane

    PubMed Central

    Kometani, Tadaatsu; Kinosita, Kazuhiko; Furuno, Taiji; Kouyama, Tsutomu; Ikegami, Akira

    1987-01-01

    Transmembrane location of the retinal chromophore in the purple membrane of Halobacterium halobium was investigated in three different systems in which excitation energy transfer between the chromophore and external dye molecules condensed on the membrane surfaces was observed. In system ii, the energy donor was the retinal chromophore converted in situ to a fluorescent derivative. The fluorescent membranes were embedded in solid cobalt-EDTA, which served as energy acceptors. System iii was similar to system ii, except that the acceptors were tris(2,2′-bipyridyl)ruthenium(II) complex in solid form. The positively charged ruthenium complex had a radius of 0.7 nm, whereas the cobalt complex in system ii was smaller (radius ∼0.4 nm) and negatively charged. System iv was stacked sheets of native purple membrane with interspersed ruthenium complex; energy transfer from the luminescent ruthenuim complex to the native retinal chromophore was observed. The energy transfer rates in these three systems, and in two additional systems already described (Kouyama, T., K. Kinosita, Jr., and A. Ikegami, 1983, J. Mol. Biol., 165:91-107), were all consistent with a location of the retinal chromophore at a depth of 1.0 ± 0.3 nm from a surface of the purple membrane. All the analyses in the present work involved an assumption that contacts between the external dye molecules and membrane surfaces were maximal; the depth values obtained cannot be underestimates. The chromophore therefore must be outside the middle one-third of the thickness, ∼4.5 nm, of the purple membrane. PMID:19431704

  17. A Glove for Tapping and Discrete 1D/2D Input

    NASA Technical Reports Server (NTRS)

    Miller, Sam A.; Smith, Andy; Bahram, Sina; SaintAmant, Robert

    2012-01-01

    This paper describes a glove with which users enter input by tapping fingertips with the thumb or by rubbing the thumb over the palmar surfaces of the middle and index fingers. The glove has been informally tested as the controller for two semi-autonomous robots in a a 3D simulation environment. A preliminary evaluation of the glove s performance is presented.

  18. Glove attributes and their contribution to force decrement and increased effort in power grip.

    PubMed

    Willms, Kirsten; Wells, Richard; Carnahan, Heather

    2009-12-01

    To determine the contribution of the loss of tactile sensitivity, glove flexibility, glove thickness, and changes in finger geometry to force decrement and increased effort during gloved power grip. Gloved work has been shown to increase the effort required to perform manual tasks. A battery of maximal and submaximal gripping tasks was performed while grip force and surface electromyography of seven forearm muscles were recorded. Participants performed power grips while wearing three different thicknesses of rubber gloves (differing only in thickness; maximum 3.1 mm), wearing interdigital spacers between the fingers (matched to the glove thicknesses), and with a bare hand. Decreases in maximum grip force compared with the bare hand were observed for the thickest glove (-31.0 +/- 6.8%, p < .05) and for the thickest interdigital spacers (-9.7 +/- 5.9%, p < .05). Participants increased their grip force with increasing glove thickness for a submaximal object-lifting task (p < .01). To maintain an unloaded grip posture and to create a fixed submaximal force, participants increased muscle activation (p < .05) for all muscles with increasing glove thickness. Decreases in maximal grip force and increased effort in submaximal tasks could be attributed to a combination of reduced tactile sensitivity, the effort to bend the gloves, and interdigital separation. Although the values obtained are specific to the rubber gloves tested, the results give insights into factors important in the design and selection of gloves.

  19. Dexterity test data contribute to proper glovebox over-glove use

    SciTech Connect

    Cournoyer, Michael E; Lawton, Cindy M; Castro, Amanda M; Costigan, Stephen A; Apel, D M; Neal, G E; Castro, J M; Michelotti, R A

    2010-01-21

    Programmatic operations at the Los Alamos National Laboratory Plutonium Facility (TA-55) involve working with various amounts of plutonium and other highly toxic, alpha-emitting materials. The spread of radiological contamination on surfaces, airborne contamination, and excursions of contaminants into the operator's breathing zone are prevented through the use of a variety of gloveboxes (the glovebox, coupled with an adequate negative pressure gradient, provides primary confinement). The glovebox gloves are the weakest part of this engineering control. The Glovebox Glove Integrity Program, which controls glovebox gloves from procurement to disposal at TA-55, manages this vulnerability. A key element of this program is to consider measures that lower the overall risk of glovebox operations. Proper selection of over-gloves is one of these measures. Line management owning glovebox processes have the responsibility to approve the appropriate personal protective equipment/glovebox glove/over-glove combination. As low as reasonably achievable (ALARA) considerations to prevent unplanned glovebox glove openings must be balanced with glove durability and worker dexterity, both of which affect the final overall risk to the worker. In this study, the causes of unplanned glovebox glove openings, the benefits of over-glove features, the effect of over-gloves on task performance using standard dexterity tests, the pollution prevention benefits, and the recommended over-gloves for a task are presented.

  20. Evaluating the effectiveness of gloves in reducing the hazards of hand- transmitted vibration

    PubMed Central

    Griffin, M. J.

    1998-01-01

    OBJECTIVES: A method of evaluating the effectiveness of gloves in reducing the hazards of hand-transmitted vibration is proposed. METHOD: The glove isolation effectiveness was calculated from: (a) the measured transmissibility of a glove, (b) the vibration spectrum on the handle of a specific tool (or class of tools), and (c) the frequency weighting indicating the degree to which different frequencies of vibration cause injury. With previously reported tool vibration spectra and glove transmissibilities (from 10-1000 Hz), the method was used to test 10 gloves with 20 different powered tools. RESULTS: The frequency weighting for hand-transmitted vibration advocated in British standard 6842 (1987) and international standard 5349 (1986) greatly influences the apparent isolation effectiveness of gloves. With the frequency weighting, the gloves had little effect on the transmission of vibration to the hand from most of the tools. Only for two or three tools (those dominated by high frequency vibration) did any glove provide useful attenuation. Without the frequency weighting, some gloves showed useful attenuation of the vibration on most powered tools. CONCLUSIONS: In view of the uncertain effect of the vibration frequency in the causation of disorders from hand-transmitted vibration, it is provisionally suggested that the wearing of a glove by the user of a particular vibratory tool could be encouraged if the glove reduces the transmission of vibration when it is evaluated without the frequency weighting and does not increase the vibration when it is evaluated with the frequency weighting. A current international standard for the measurement and evaluation of the vibration transmitted by gloves can classify a glove as an antivibration glove when it provides no useful attenuation of vibration, whereas a glove providing useful attenuation of vibration on a specific tool can fail the test.   PMID:9764112

  1. Exploring inappropriate certified nursing assistant glove use in long-term care.

    PubMed

    Burdsall, Deborah Patterson; Gardner, Sue E; Cox, Thomas; Schweizer, Marin; Culp, Kennith R; Steelman, Victoria M; Herwaldt, Loreen A

    2017-09-01

    Certified Nursing Assistants (CNAs) frequently wear gloves when they care for patients in standard precautions. If CNAs use gloves inappropriately, they may spread pathogens to patients and the environment, potentially leading to health care-associated infections (HAIs). Using a descriptive structured observational design, we examined the degree of inappropriate health care personnel glove use in a random sample of 74 CNAs performing toileting and perineal care at 1 long-term care facility. During the 74 patient care events, CNAs wore gloves for 80.2% (1,774/2,213) of the touch points, failing to change gloves at 66.4% (225/339) of glove change points. CNAs changed gloves a median of 2.0 times per patient care event. A median of 1.0 change occurred at a change point. CNAs failed to change their gloves at a glove change point a median of 2.5 times per patient care event. Most (61/74; 82.4%) patient care events had >1 contaminated touch point. Over 44% (782/1,774) of the gloved touch points were defined as contaminated for a median of 8.0 contaminated glove touch points per patient care event. All contaminated touches were with gloved hands (P <.001). Inappropriate glove use was frequently observed in this study. Contaminated gloves may be a significant cause of cross-contamination of pathogens in health care environments. Future research studies should evaluate strategies to improve glove use to reduce HAIs. Copyright © 2017. Published by Elsevier Inc.

  2. Evaluating the effectiveness of gloves in reducing the hazards of hand-transmitted vibration.

    PubMed

    Griffin, M J

    1998-05-01

    A method of evaluating the effectiveness of gloves in reducing the hazards of hand-transmitted vibration is proposed. The glove isolation effectiveness was calculated from: (a) the measured transmissibility of a glove, (b) the vibration spectrum on the handle of a specific tool (or class of tools), and (c) the frequency weighting indicating the degree to which different frequencies of vibration cause injury. With previously reported tool vibration spectra and glove transmissibilities (from 10-1000 Hz), the method was used to test 10 gloves with 20 different powered tools. The frequency weighting for hand-transmitted vibration advocated in British standard 6842 (1987) and international standard 5349 (1986) greatly influences the apparent isolation effectiveness of gloves. With the frequency weighting, the gloves had little effect on the transmission of vibration to the hand from most of the tools. Only for two or three tools (those dominated by high frequency vibration) did any glove provide useful attenuation. Without the frequency weighting, some gloves showed useful attenuation of the vibration on most powered tools. In view of the uncertain effect of the vibration frequency in the causation of disorders from hand-transmitted vibration, it is provisionally suggested that the wearing of a glove by the user of a particular vibratory tool could be encouraged if the glove reduces the transmission of vibration when it is evaluated without the frequency weighting and does not increase the vibration when it is evaluated with the frequency weighting. A current international standard for the measurement and evaluation of the vibration transmitted by gloves can classify a glove as an antivibration glove when it provides no useful attenuation of vibration, whereas a glove providing useful attenuation of vibration on a specific tool can fail the test.

  3. Preparation and Antioxidant Activity of Purple Potato Wine

    PubMed Central

    Zhong-hua, Liu; Jie, Guo

    2015-01-01

    Purple potatoes were used as raw material to study the purple potato wine production process and antioxidant activity. This paper analyzed different fermentation time, fermentation temperature, yeast inoculum, initial pH, the initial sugar content on alcohol and anthocyanin contents of purple potato wine by single factor experiments and response surface methodology(RSM). The results showed that the optimum fermentation conditions of purple potato wine were as follows: fermentation temperature was 26oC, yeast inoculum was 0.15%, fermentation time was 7 d, initial pH was 3.0 and initial sugar content was 11 %. Under these conditions the alcohol and anthocyanin contents of purple potato wine could reach 10.55%/Vol and 6.42 μg/mL, respectively. The purple potato wine was purple, bright in colour, pleasant fragrance and pure taste. Prepared purple potato wine had the ability of reducing Fe3+ and scavenging superoxide anion radicals, which meant that purple potato wine had certain antioxidant activity. PMID:26998173

  4. Experimental set-up and sensory glove interface for microsurgery.

    PubMed

    Amirouche, F; Martin, J R; Gonzalez, M; Fergusson, L

    2008-01-01

    One of the most fundamental prerequisites for successful microsurgery is thoughtful and adequate training. A combination of knowledge, technical skill, and decision making directly influences the surgical outcome. This study aims to analyse microsurgical hand coordinations quantitatively and to study the utility of a sensory glove interface in identifying the hand coordination patterns during microsurgery. A sensory glove interface used to measure the angular flexion-extension movements of the major interphalangeal joints of the hand, the grasp pressure, and the relative hand movements has been developed. Experiments of two suturing techniques were conducted with five experienced microsurgeons, and microsurgery practice was examined. The custom sensory glove interface required both signal conditioning and amplification which was directly interfaced with a custom-designed LABView software code. The sensory glove interface was calibrated using regression techniques and the set-up was validated using the Bland-Altman correlation technique. The hand coordination patterns were analysed using principal-component analysis. Pareto plots showing the contribution of the principal components were analysed. The contributions of the first two sensory data components have also been compared with hand coordination studies. The temporal variations provided new insights into the underlying synergetic mechanisms and in particular the relation between different suture techniques on grasp pressure.

  5. 14. VIEW OF THE OUTSIDE OF A GLOVE BOX THAT ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    14. VIEW OF THE OUTSIDE OF A GLOVE BOX THAT CONTAINS ELECTROREFINING EQUIPMENT. ELECTROREFINING WAS ONE OF THE PROCESSES USED TO PURIFY PLUTONIUM THAT DID NOT MEET PURITY SPECIFICATIONS. (10/25/66) - Rocky Flats Plant, Plutonium Fabrication, Central section of Plant, Golden, Jefferson County, CO

  6. 18. DETAILED VIEW OF A GLOVE BOX DAMAGED IN A ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    18. DETAILED VIEW OF A GLOVE BOX DAMAGED IN A FIRE THAT OCCURRED ON MAY 11, 1969. THE FIRE OCCURRED FROM THE SPONTANEOUS IGNITION OF A BRIQUETTE OF SCRAP PLUTONIUM ALLOY METAL. (5/18/69) - Rocky Flats Plant, Plutonium Fabrication, Central section of Plant, Golden, Jefferson County, CO

  7. 2. VIEW OF THE GLOVE BOX WHERE, ON SEPTEMBER 11, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    2. VIEW OF THE GLOVE BOX WHERE, ON SEPTEMBER 11, 1957, A FIRE STARTED. THE FIRE SPREAD TO THE REST OF THE BUILDING, RESULTING IN THE TRANSFER OF PLUTONIUM FOUNDRY, FABRICATION, AND ASSEMBLY OPERATIONS TO BUILDING 776/777. (9/16/57) - Rocky Flats Plant, Plutonium Recovery & Fabrication Facility, North-central section of plant, Golden, Jefferson County, CO

  8. 6. VIEW OF BUILDING 707 INTERIOR. GLOVE BOX WORKSTATIONS ARE ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    6. VIEW OF BUILDING 707 INTERIOR. GLOVE BOX WORKSTATIONS ARE BEING CONSTRUCTED FOR FOUNDRY PROCESSES IN MODULE A. (10/6/69) - Rocky Flats Plant, Plutonium Manufacturing Facility, North-central section of Plant, just south of Building 776/777, Golden, Jefferson County, CO

  9. 9. DETAILED VIEW OF BRIQUETTING PRESS HOUSED IN A GLOVE ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    9. DETAILED VIEW OF BRIQUETTING PRESS HOUSED IN A GLOVE BOX. THE PRESS FORMED SCRAP PLUTONIUM METAL FROM FOUNDRY AND FABRICATION PROCESSES INTO SMALL BRIQUETTES. THESE BRIQUETTES BECAME PART OF THE FEED MATERIALS FOR THE FOUNDRY. (5/6/59) - Rocky Flats Plant, Plutonium Fabrication, Central section of Plant, Golden, Jefferson County, CO

  10. GloVe C++ v. 1.0

    SciTech Connect

    Cox, Jonathan A.

    2015-12-02

    This code implements the GloVe algorithm for learning word vectors from a text corpus. It uses a modern C++ approach. This algorithm is described in the open literature in the referenced paper by Pennington, Jeffrey, Richard Socher, and Christopher D. Manning.

  11. 8. VIEW OF GLOVE BOXES USED IN THE ANION EXCHANGE ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    8. VIEW OF GLOVE BOXES USED IN THE ANION EXCHANGE PROCESS. THE ANION EXCHANGE PROCESS PURIFIED AND CONCENTRATED PLUTONIUM-BEARING NITRIC ACID SOLUTIONS TO MAKE THEM ACCEPTABLE AS FEED FOR CONVERSION TO METAL. (6/20/60) - Rocky Flats Plant, Plutonium Recovery & Fabrication Facility, North-central section of plant, Golden, Jefferson County, CO

  12. Detection of Gas Leaks in an Anaerobic Glove Box

    PubMed Central

    Jones, Gilda L.; Dever, Stanley M.

    1974-01-01

    An inert gas, Freon, can be added to the atmosphere of an anaerobic glove box without deleterious effect to cultures of anaerobic microorganisms. The sensitive probe of a Halogen Leak Detector passing over the outside surface of the box will pinpoint any escaping Freon and therefore locate the leak. PMID:4596756

  13. Detection of gas leaks in an anaerobic glove box.

    PubMed

    Jones, G L; Dever, S M

    1974-04-01

    An inert gas, Freon, can be added to the atmosphere of an anaerobic glove box without deleterious effect to cultures of anaerobic microorganisms. The sensitive probe of a Halogen Leak Detector passing over the outside surface of the box will pinpoint any escaping Freon and therefore locate the leak.

  14. Hand Rehabilitation Learning System With an Exoskeleton Robotic Glove.

    PubMed

    Ma, Zhou; Ben-Tzvi, Pinhas; Danoff, Jerome

    2016-12-01

    This paper presents a hand rehabilitation learning system, the SAFE Glove, a device that can be utilized to enhance the rehabilitation of subjects with disabilities. This system is able to learn fingertip motion and force for grasping different objects and then record and analyze the common movements of hand function including grip and release patterns. The glove is then able to reproduce these movement patterns in playback fashion to assist a weakened hand to accomplish these movements, or to modulate the assistive level based on the user's or therapist's intent for the purpose of hand rehabilitation therapy. Preliminary data have been collected from healthy hands. To demonstrate the glove's ability to manipulate the hand, the glove has been fitted on a wooden hand and the grasping of various objects was performed. To further prove that hands can be safely driven by this haptic mechanism, force sensor readings placed between each finger and the mechanism are plotted. These experimental results demonstrate the potential of the proposed system in rehabilitation therapy.

  15. [Identification of migrants from nitrile-butadiene rubber gloves].

    PubMed

    Mutsuga, Motoh; Kawamura, Yoko; Wakui, Chiseko; Maitani, Tamio

    2003-04-01

    Polyvinyl chloride gloves containing di(2-ethylhexyl) phthalate are restricted for food contact use. In their place, disposable gloves made from nitrile-butadiene rubber (NBR) are used in contact with foodstuffs. Some unknown substances were found to migrate into n-heptane from NBR gloves. By GC/MS, HR-MS and NMR, their chemical structures were confirmed to be 2,2,4-trimethyl-1,3-pentanediol diisobutyrate (used as a plasticizer), 4,4'-butylidenedi(6-tert-butyl-m-cresol), a mixture of styrenated phenols consisting of 2-(alpha-methylbenzyl)phenol, 4-(alpha-methylbenzyl)phenol, 2,6-di(alpha-methylbenzyl)phenol, 2,4-di(alpha-methylbenzyl)phenol and 2,4,6-tri(alpha-methylbenzyl)phenol (used as antioxidants), and 2,4-di-tert-butylphenol, which seems to a degradation product of antioxidant. Migration levels of these compounds were 1.68 micrograms/cm2 of 2,4-di-tert-butylphenol, 2.80 micrograms/cm2 of 2,2,4-trimethyl-1,3-pentanediol diisobutyrate, 46.08 micrograms/cm2 of styrenated phenols and 4.22 micrograms/cm2 of 4,4'-butylidenedi(6-tert-butyl-m-cresol) into n-heptane, respectively. The content of total styrenated phenols was 6,900 micrograms/g in NBR gloves.

  16. Effects of EVA spacesuit glove on grasping and pinching tasks

    NASA Astrophysics Data System (ADS)

    Appendino, Silvia; Battezzato, Alessandro; Chen Chen, Fai; Favetto, Alain; Mousavi, Mehdi; Pescarmona, Francesco

    2014-03-01

    The human hand has a wide range of degrees of freedom, allowing a great variety of movements, and is also one of the most sensitive parts of the human body. Due to these characteristics, it is the most important tool for astronauts to perform extravehicular activities (EVA). However, astronauts must wear mandatory EVA equipment to be protected from the harsh conditions in space and this strongly reduces hand performance, in particular as regards dexterity, tactile perception, mobility and fatigue. Several studies have been conducted to determine the influence of the EVA glove on manual capabilities, both in the past and more recently. This study presents experimental data regarding the performance decline occurring in terms of force and fatigue in the execution of grasping and pinching tasks when wearing an EVA glove, in pressurized and unpressurized conditions, compared with barehanded potential. Results show that wearing the unpressurized EVA glove hinders grip and lateral pinch performances, dropping exerted forces to about 50-70%, while it barely affects two- and three-finger pinch performances. On the other hand, wearing the pressurized glove worsens performances in all cases, reducing forces to about 10-30% of barehanded potential. The results are presented and compared with the previous literature.

  17. 2. PEAVEY GLOVE ELEVATOR, WORKHOUSE (NO. 1 HOUSE) WOOD FRAME ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    2. PEAVEY GLOVE ELEVATOR, WORKHOUSE (NO. 1 HOUSE) WOOD FRAME CONSTRUCTION, SHIPLOADER SIDE. WEST WALL. MARINE LEG ADDED SOME TIME BETWEEN 1907-1919. METAL PASSENGER ELEVATOR SHAFT ADDED IN EARLY 1970S. - Peavey Globe Elevator, No. 1 House, West Gate Basin & Howard's Bay, east side of slip, Superior, Douglas County, WI

  18. Sensing and Force-Feedback Exoskeleton (SAFE) Robotic Glove.

    PubMed

    Ben-Tzvi, Pinhas; Ma, Zhou

    2015-11-01

    This paper presents the design, implementation and experimental validation of a novel robotic haptic exoskeleton device to measure the user's hand motion and assist hand motion while remaining portable and lightweight. The device consists of a five-finger mechanism actuated with miniature DC motors through antagonistically routed cables at each finger, which act as both active and passive force actuators. The SAFE Glove is a wireless and self-contained mechatronic system that mounts over the dorsum of a bare hand and provides haptic force feedback to each finger. The glove is adaptable to a wide variety of finger sizes without constraining the range of motion. This makes it possible to accurately and comfortably track the complex motion of the finger and thumb joints associated with common movements of hand functions, including grip and release patterns. The glove can be wirelessly linked to a computer for displaying and recording the hand status through 3D Graphical User Interface (GUI) in real-time. The experimental results demonstrate that the SAFE Glove is capable of reliably modeling hand kinematics, measuring finger motion and assisting hand grasping motion. Simulation and experimental results show the potential of the proposed system in rehabilitation therapy and virtual reality applications.

  19. Modeling of RTF Glove-Box and Stripper System

    SciTech Connect

    Hsu, R.H.

    2001-03-28

    The glove box-stripper system for the Replacement Tritium Facility (RTF) has been modeled to determine its steady-state performance. To permit comparison, simulations of modified cases were compared with a standard or base case. This paper discusses tests conducted, results obtained and makes recommendations.

  20. Use of a pneumatic glove for hand rehabilitation following stroke.

    PubMed

    Connelly, Lauri; Stoykov, Mary Ellen; Jia, Yicheng; Toro, Maria L; Kenyon, Robert V; Kamper, Derek G

    2009-01-01

    Hand impairment is common following stroke and is often resistant to traditional therapy methods. Successful interventions have stressed the importance of repeated practice to facilitate rehabilitation. Thus, we have developed a servo-controlled glove to assist extension of individual digits to promote practice of grasp-and-release movements with the hand. This glove, the PneuGlove, permits free movement of the arm throughout its workspace. A novel immersive virtual reality environment was created for training movement in conjunction with the device. Seven stroke survivors with chronic hand impairment participated in 18 training sessions with the PneuGlove over 6 weeks. Overall, subjects displayed a significant 6-point improvement in the upper extremity score on the Fugl-Meyer assessment and this increase was maintained at the evaluation held one month after conclusion of all training (p < 0.01). The majority of this gain came from an increase in the hand/wrist score (3.8-point increase, p < 0.01). Thus, the system shows promise for rehabilitative training of hand movements after stroke.

  1. Semiautomatic machine for turning inside out industrial leather gloves

    NASA Astrophysics Data System (ADS)

    Aragón-Gonzalez, G.; Cano-Blanco, M.; León-Galicia, A.; Medrano-Sierra, L. F.; Morales-Gómez, J. R.

    2015-01-01

    The last step in the industrial leather gloves manufacturing is to turn the inside out so that the sewing be in the inside of the glove. This work presents the design and testing of a machine for that purpose. In order to quantify the relevant variables, testing was performed with a prototype glove. The employed devices and the testing proceeding were developed experimentally. The obtained information was used to build the turning inside out machine. This machine works with pneumatic power to carry the inside out turning by means of double effect lineal actuators. It has two independent work stations that could be operated simultaneously by two persons, one in each station or in single mode operating one station by one person. The turning inside out cycle is started by means of directional control valves operated with pedals. The velocity and developed force by the actuators is controlled with typical pneumatic resources. The geometrical dimensions of the machine are: 1.15 m length; 0.71 m width and 2.15 m high. Its approximated weight is 120 kg. The air consumption is 5.4 fps by each working station with 60 psig work pressure. The turning inside out operation is 40 s for each industrial leather glove.

  2. 17. VIEW OF STEAM CONDENSATE COLLECTION TANKS. THE GLOVE BOX ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    17. VIEW OF STEAM CONDENSATE COLLECTION TANKS. THE GLOVE BOX IN THE BACKGROUND IS AT THE END OF THE AMERICIUM RECOVERY LINE. (5/27/71) - Rocky Flats Plant, Plutonium Recovery & Fabrication Facility, North-central section of plant, Golden, Jefferson County, CO

  3. The Effects of Extravehicular Activity (EVA) Glove Pressure on Tactility

    NASA Technical Reports Server (NTRS)

    Thompson, Shelby; Miranda, Mesloh; England, Scott; Benson, Elizabeth; Rajulu, Sudhakar

    2010-01-01

    The purpose of the current study was to quantify finger tactility, while wearing a Phase VI Extravehicular Activity (EVA) glove. Subjects were fully suited in an Extravehicular Mobility Unit (EMU) suit. Data was collected under three conditions: bare-handed, gloved at 0 psi, and gloved at 4.3 psi. In order to test tactility, a series of 30 tactile stimuli (bumps) were created that varied in both height and width. With the hand obscured, subjects applied pressure to each bump until detected tactilely. The amount of force needed to detect each bump was recorded using load cells located under a force-plate. The amount of force needed to detect a bump was positively related to width, but inversely related to height. In addition, as the psi of the glove increased, more force was needed to detect the bump. In terms of application, it was possible to determine the optimal width and height a bump needs to be for a specific amount of force applied for tactility.

  4. Determination of an Ergonomically Sound Glovebox Glove Port Center Line

    SciTech Connect

    Christman, Marissa St; Land, Whitney Morgan

    2016-11-30

    Determine an ergonomic glovebox glove port center line location which will be used for standardization in new designs, thus allowing for predictable human work performance, reduced worker exposure to radiation and musculoskeletal injury risks, and improved worker comfort, efficiency, health, and safety.

  5. Effect of glove occlusion on the skin barrier.

    PubMed

    Tiedemann, Daniel; Clausen, Maja Lisa; John, Swen Malthe; Angelova-Fischer, Irena; Kezic, Sanja; Agner, Tove

    2016-01-01

    Wet work tasks are the most common exposures leading to occupational irritant contact dermatitis. Use of liquid-proof gloves is recommended when performing wet work, however, gloves may also contribute to impairment of the skin barrier and development of irritant contact dermatitis. The aim of this study is to review the literature on the effects of glove occlusion on skin barrier function. The PubMed database was searched up to 1 February 2015 for articles on the association between glove occlusion and skin barrier function, including human studies only and in English. Only experimental studies including assessment of the skin barrier function were included in the data analysis. Thirteen articles were identified, 8 with focus on occlusion alone, 7 with focus on occlusion in combination with irritant exposure (some overlapping), and 2 field studies. In conclusion, data from the literature showed that the negative effect of occlusion in itself is limited, and that only extensive and long-term occlusion will cause barrier impairment. However, studies investigating combined effect of occlusion and exposure to soaps/detergents indicate that occlusion significantly enhances the skin barrier damage caused by detergents/soaps in a dose-response fashion.

  6. INTERIOR PHOTO OF THE REMOTE ANALYTICAL FACILITY OF SHIELDED GLOVE ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    INTERIOR PHOTO OF THE REMOTE ANALYTICAL FACILITY OF SHIELDED GLOVE BOXES IN OPERATING CORRIDOR (CPP-627). INL PHOTO NUMBER NRTS-55-1524. Unknown Photographer, 1955 - Idaho National Engineering Laboratory, Idaho Chemical Processing Plant, Fuel Reprocessing Complex, Scoville, Butte County, ID

  7. 1. PEAVEY GLOVE ELEVATOR, SUPERIOR, WI 1887; WORKHOUSE (NO. 1 ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    1. PEAVEY GLOVE ELEVATOR, SUPERIOR, WI 1887; WORKHOUSE (NO. 1 HOUSE) WOOD FRAME CONSTRUCTION. VIEW FROM NORTHERN PACIFIC TRAIN BED, LOOKING APPROXIMATELY SOUTHEAST; NO. 2 HOUSE IN CENTER; NO. 3 HOUSE ON EXTREME RIGHT. - Peavey Globe Elevator, No. 1 House, West Gate Basin & Howard's Bay, east side of slip, Superior, Douglas County, WI

  8. Tactile Gloves for Autonomous Grasping With the NASA/DARPA Robonaut

    NASA Technical Reports Server (NTRS)

    Martin, T. B.; Ambrose, R. O.; Diftler, M. A.; Platt, R., Jr.; Butzer, M. J.

    2004-01-01

    Tactile data from rugged gloves are providing the foundation for developing autonomous grasping skills for the NASA/DARPA Robonaut, a dexterous humanoid robot. These custom gloves compliment the human like dexterity available in the Robonaut hands. Multiple versions of the gloves are discussed, showing a progression in using advanced materials and construction techniques to enhance sensitivity and overall sensor coverage. The force data provided by the gloves can be used to improve dexterous, tool and power grasping primitives. Experiments with the latest gloves focus on the use of tools, specifically a power drill used to approximate an astronaut's torque tool.

  9. The effect of glove contamination on the bond strength of resin to enamel.

    PubMed

    Sanders, Brian J; Pollock, Adam; Weddell, James A; Moore, Keith

    2004-01-01

    Over the past twenty years infection control protocol has evolved and use of gloves is now mandatory. Practitioners have become aware of potential interactions between the latex gloves and many of the dental material used as well as the potential for contamination from the gloves. The purpose of this study was to evaluate the shear bond strength of bonded restorations to enamel of uncontaminated and contaminated resin adhesive with powder free and powdered latex gloves. The results of the study demonstrated that the resin bonding agent that was in contact with either powdered or non- powdered latex gloves did not have a significant effect on the shear bond strength of the bonded restoration.

  10. Permeability of different types of medical protective gloves to acrylic monomers.

    PubMed

    Lönnroth, Emma-Christin; Wellendorf, Hanne; Ruyter, Eystein

    2003-10-01

    Dental personnel and orthopedic surgeons are at risk when manually handling products containing methyl methacrylate (MMA). Dental products may also contain cross-linking agents such as ethylene glycol dimethacrylate (EGDMA) or 1,4-butanediol dimethacrylate (1,4-BDMA). Skin contact with monomers can cause hand eczema, and the protection given by gloves manufactured from different types of material is not well known. The aim of this study was to determine the breakthrough time (BTT, min) as a measure of protection (according to the EU standard EN-374-3) for a mixture consisting of MMA, EGDMA and 1,4-BDMA. Fifteen different gloves representing natural rubber latex material, synthetic rubber material (e.g. nitrile rubbers), and synthetic polymer material were tested. The smallest monomer MMA permeated within 3 min through all glove materials. A polyethylene examination glove provided the longest protection period to EGDMA and 1, 4-BDMA (> 120 min and 25.0 min), followed by the surgical glove Tactylon (6.0 min and 8.7 min) and the nitrile glove Nitra Touch (5.0 min and 8.7 min). This study showed that the breakthrough time (based on permeation rate) cannot be regarded as a 'safe limit'. When the permeation rate is low, monomers may have permeated before BTT can be determined. Using double gloves with a synthetic rubber inner glove and a natural rubber outer glove provided longer protection when the inner glove was rinsed in water before placing the outer glove on top.

  11. Latex Rubber Gloves as a Sampling Dosimeter Using a Novel Surrogate Sampling Device.

    PubMed

    Sankaran, Gayatri; Lopez, Terry; Ries, Steve; Ross, John; Vega, Helen; Eastmond, David A; Krieger, Robert I

    2015-01-01

    Pesticide exposure during harvesting of crops occurs primarily to the workers' hands. When harvesters wear latex rubber gloves for personal safety and hygiene harvesting reasons, gloves accumulate pesticide residues. Hence, characterization of the gloves' properties may be useful for pesticide exposure assessments. Controlled field studies were conducted using latex rubber gloves to define the factors that influence the transfer of pesticides to the glove and that would affect their use as a residue monitoring device. A novel sampling device called the Brinkman Contact Transfer Unit (BCTU) was constructed to study the glove characteristics and residue transfer and accumulation under controlled conditions on turf. The effectiveness of latex rubber gloves as sampling dosimeters was evaluated by measuring the transferable pesticide residues as a function of time. The validation of latex rubber gloves as a residue sampling dosimeter was performed by comparing pesticide transfer and dissipation from the gloves, with the turf transferable residues sampled using the validated California (CA) Roller, a standard measure of residue transfer. The observed correlation (Pearson's correlation coefficient R(2)) between the two methods was .84 for malathion and .96 for fenpropathrin, indicating that the BCTU is a useful, reliable surrogate tool for studying available residue transfer to latex rubber gloves under experimental conditions. Perhaps more importantly, these data demonstrate that latex gloves worn by workers may be useful quantifiable matrices for measuring pesticide exposure.

  12. Investigation of the effects of extravehicular activity (EVA) gloves on performance

    NASA Technical Reports Server (NTRS)

    Bishu, Ram R.; Klute, Glenn

    1993-01-01

    The objective was to assess the effects of extravehicular activity (EVA) gloves at different pressures on human hand capabilities. A factorial experiment was performed in which three types of EVA gloves were tested at five pressure differentials. The independent variables tested in this experiment were gender, glove type, pressure differential, and glove make. Six subjects participated in an experiment where a number of dexterity measures, namely time to tie a rope, and the time to assemble a nut and bolt were recorded. Tactility was measured through a two point discrimination test. The results indicate that with EVA gloves strength is reduced by nearly 50 percent, there is a considerable reduction in dexterity, performance decrements increase with increasing pressure differential, and some interesting gender glove interactions were observed, some of which may have been due to the extent (or lack of) fit of the glove to the hand. The implications for the designer are discussed.

  13. The warning glove - development and evaluation of a multimodal action-specific warning prototype.

    PubMed

    Schmuntzsch, Ulrike; Sturm, Christine; Roetting, Matthias

    2014-09-01

    This paper has two objectives: first, to introduce the concept of multimodal action-specific warnings and its prototypic realization in the form of a warning glove and second, to present the main findings of a user study that was conducted to test the warning glove against a conventional warning system. Regarding the first goal, the combination of multimodality and action-specificity was implemented by attaching electronic actuators on a right-handed glove for transmitting visual, auditory and tactile feedback. For the second objective, a user study was conducted to test the hypothesis that the warning glove is capable of obtaining faster responses and to determine the perceptions of the users regarding the appropriateness of the warning glove. The results confirmed the assumption of faster response times and participants perceived the warning glove to be 'fairly appropriate'. These results warrant further development of this multimodal action-specific warning glove.

  14. Creating another barrier to the transmission of bloodborne operative infections with a new glove gauntlet.

    PubMed

    Edlich, Richard F; Wind, Tyler C; Hill, Lisa G; Thacker, John G

    2003-01-01

    While disposable surgical gowns are designed to be either liquid-resistant or liquid-proof apparel, the woven cuffs of surgical gowns are easily permeable to water, an invitation to the transmission of bloodborne infections. Regent Medical has redesigned the diameter of some of its surgical glove gauntlets to enhance the security of the glove/surgical cuff interface. The purpose of this biomechanical performance study was to evaluate the benefit of a narrow glove gauntlet in enhancing the security of the gown and cuff interface. Using three types of disposable gown, the narrow glove gauntlet significantly increased the security of the gown-glove interface. On the basis of this biomechanical performance study, Regent Medical has announced that it will be using this narrow glove gauntlet design on more of their glove products to further reduce the transmission of bloodborne operative infections.

  15. Puncture resistance and stiffness of nitrile and latex dental examination gloves.

    PubMed

    Patel, H B; Fleming, G J P; Burke, F J T

    2004-06-12

    The aim of the current study was to assess the puncture resistance and stiffness of nitrile and latex dental examination gloves. Puncture resistance was measured by employing an adapted version of ASTM F1342-91 using both a 316 stainless steel puncture probe (0.8 mm diameter) and a dental injection needle (0.45 mm diameter) interfaced to a tensile testing apparatus. Glove specimens (12 cm length, 1.5 cm breadth) were removed for modulus (M100) evaluation by assessing the force required to elongate the specimen to 100% of the original length. Glove samples were also aged to investigate whether puncture resistance and M100 values varied with aging at 70 degrees C for 7 days in an air-circulating oven. The nitrile glove types were assessed to have significantly higher puncture resistance compared with the latex glove type when the steel puncture probe was the pentrometer when using the one way analysis of variance (ANOVA) at the 95% significance level. Interestingly the puncture resistance for the latex glove type was significantly higher (P < 0.001) when a dental injection needle was used as the pentrometer compared with the nitrile glove types. The M100 values were significantly higher for the nitrile glove types for which the stiffness increased when the gloves were aged (P < 0.001). The higher stiffness values resulted in increased puncture resistance when the nitrile glove specimens were aged irrespective of the pentrometer type. However, the ability of latex to re-seal itself on puncture may be beneficial when considering the protection potential of each glove type against breaches in cross infection. For clinicians that have experienced an adverse reaction to natural latex gloves, the results of the current study indicate that nitrile gloves are available at reasonable cost and offer the clinician comparable resistance to puncture with latex gloves.

  16. A new method of measuring the stiffness of astronauts' EVA gloves

    NASA Astrophysics Data System (ADS)

    Mousavi, Mehdi; Appendino, Silvia; Battezzato, Alessandro; Bonanno, Alberto; Chen Chen, Fai; Crepaldi, Marco; Demarchi, Danilo; Favetto, Alain; Pescarmona, Francesco

    2014-04-01

    Hand fatigue is one of the most important problems of astronauts during their missions to space. This fatigue is due to the stiffness of the astronauts' gloves known as Extravehicular Activity (EVA) gloves. The EVA glove has a multilayered, bulky structure and is pressurized against the vacuum of space. In order to evaluate the stiffness of EVA gloves, different methods have been proposed in the past. In particular, the effects of wearing an EVA glove on the performance of the hands have been published by many researchers to represent the stiffness of the EVA glove. In this paper, a new method for measuring the stiffness of EVA gloves is proposed. A tendon-actuated finger probe is designed and used as an alternative to the human index finger in order to be placed inside an EVA glove and measure its stiffness. The finger probe is equipped with accelerometers, which work as tilt sensors, to measure the angles of its phalanges. The phalanges are actuated by applying different amount of torque using the tendons of the finger probe. Moreover, a hypobaric glove box is designed and realized to simulate the actual operating pressure of the EVA glove and to measure its stiffness in both pressurized and non-pressurized conditions. In order to prove the right performance of the proposed finger probe, an Orlam-DM EVA glove is used to perform a number of tests. The equation of stiffness for the PIP joint of this glove is extracted from the results acquired from the tests. This equation presents the torque required to flex the middle phalanx of the glove. Then, the effect of pressurization on the stiffness is highlighted in the last section. This setup can be used to measure the stiffness of different kinds of EVA gloves and allows direct, numerical comparison of their stiffness.

  17. Glove barriers to bacterial cross-contamination between hands to food.

    PubMed

    Montville, R; Chen, Y; Schaffner, D W

    2001-06-01

    Human hands are an important source of microbial contamination of foods. However, published data on the effectiveness of handwashing and glove use in a foodservice setting are limited. Bacterial transfer through foodservice quality gloves was quantified using nalidixic acid-resistant Enterobacter aerogenes (a nonpathogenic surrogate with attachment characteristics similar to Salmonella). Five transfer rates were determined: chicken to bare hand, chicken to hand through gloves, bare hand to lettuce, hand to lettuce through gloves (with low inoculum on hands), and hand to lettuce through gloves (with high inoculum on hands). At least 30 observations were made for each percent transfer rate using 30 individual volunteers. The logarithm of percent transfer data were then fit to distributions: chicken to bare hand, normal (0.71, 0.42); chicken to hand through gloves, gamma (5.91, 0.40, -5.00); bare hand to lettuce, logistic (1.16, 0.30); hand to lettuce through gloves (low inoculum), normal (0.35, 0.88); hand to lettuce through gloves (high inoculum), normal (-2.52, 0.61). A 0.01% transfer was observed from food to hands and from hands to food when subjects wore gloves and a 10% transfer was observed without a glove barrier. These results indicate that gloves are permeable to bacteria although transfer from hands to food through a glove barrier was less than without a glove barrier. Our results indicate that gloves may reduce both bacterial transfer from food to the hands of foodservice workers and in subsequent transfer from hands back to food.

  18. Pegasus Rocket Wing and PHYSX Glove Undergoes Stress Loads Testing

    NASA Technical Reports Server (NTRS)

    1997-01-01

    The Pegasus Hypersonic Experiment (PHYSX) Project's Pegasus rocket wing with attached PHYSX glove rests after load-tests at Scaled Composites, Inc., in Mojave, California, in January 1997. Technicians slowly filled water bags beneath the wing, to create the pressure, or 'wing-loading,' required to determine whether the wing could withstand its design limit for stress. The wing sits in a wooden triangular frame which serves as the test-rig, mounted to the floor atop the waterbags. Pegasus is an air-launched space booster produced by Orbital Sciences Corporation and Hercules Aerospace Company (initially; later, Alliant Tech Systems) to provide small satellite users with a cost-effective, flexible, and reliable method for placing payloads into low earth orbit. Pegasus has been used to launch a number of satellites and the PHYSX experiment. That experiment consisted of a smooth glove installed on the first-stage delta wing of the Pegasus. The glove was used to gather data at speeds of up to Mach 8 and at altitudes approaching 200,000 feet. The flight took place on October 22, 1998. The PHYSX experiment focused on determining where boundary-layer transition occurs on the glove and on identifying the flow mechanism causing transition over the glove. Data from this flight-research effort included temperature, heat transfer, pressure measurements, airflow, and trajectory reconstruction. Hypersonic flight-research programs are an approach to validate design methods for hypersonic vehicles (those that fly more than five times the speed of sound, or Mach 5). Dryden Flight Research Center, Edwards, California, provided overall management of the glove experiment, glove design, and buildup. Dryden also was responsible for conducting the flight tests. Langley Research Center, Hampton, Virginia, was responsible for the design of the aerodynamic glove as well as development of sensor and instrumentation systems for the glove. Other participating NASA centers included Ames Research

  19. Pegasus Rocket Wing and PHYSX Glove Undergoes Stress Loads Testing

    NASA Technical Reports Server (NTRS)

    1997-01-01

    The Pegasus Hypersonic Experiment (PHYSX) Project's Pegasus rocket wing with attached PHYSX glove rests after load-tests at Scaled Composites, Inc., in Mojave, California, in January 1997. Technicians slowly filled water bags beneath the wing, to create the pressure, or 'wing-loading,' required to determine whether the wing could withstand its design limit for stress. The wing sits in a wooden triangular frame which serves as the test-rig, mounted to the floor atop the waterbags. Pegasus is an air-launched space booster produced by Orbital Sciences Corporation and Hercules Aerospace Company (initially; later, Alliant Tech Systems) to provide small satellite users with a cost-effective, flexible, and reliable method for placing payloads into low earth orbit. Pegasus has been used to launch a number of satellites and the PHYSX experiment. That experiment consisted of a smooth glove installed on the first-stage delta wing of the Pegasus. The glove was used to gather data at speeds of up to Mach 8 and at altitudes approaching 200,000 feet. The flight took place on October 22, 1998. The PHYSX experiment focused on determining where boundary-layer transition occurs on the glove and on identifying the flow mechanism causing transition over the glove. Data from this flight-research effort included temperature, heat transfer, pressure measurements, airflow, and trajectory reconstruction. Hypersonic flight-research programs are an approach to validate design methods for hypersonic vehicles (those that fly more than five times the speed of sound, or Mach 5). Dryden Flight Research Center, Edwards, California, provided overall management of the glove experiment, glove design, and buildup. Dryden also was responsible for conducting the flight tests. Langley Research Center, Hampton, Virginia, was responsible for the design of the aerodynamic glove as well as development of sensor and instrumentation systems for the glove. Other participating NASA centers included Ames Research

  20. How Human Life Is Rare: "The Color Purple"

    ERIC Educational Resources Information Center

    Brown, Angela

    2014-01-01

    "The Color Purple" is a work in art. Its dramatic overtone recognizes the essence of African American culture. "The Color Purple" brings to light the cultural heritage of black origin. Its work translates the poetic story of how black women embrace the thrust of the social conditions of our heritage. The spiritual conviction…

  1. Rubber contact urticaria. Allergenic properties of 19 brands of latex gloves.

    PubMed

    Turjanmaa, K; Laurila, K; Mäkinen-Kiljunen, S; Reunala, T

    1988-11-01

    To compare the immediate skin test reactivity of various latex (natural rubber) surgical and cleaning gloves, prick tests were performed on 40 latex-allergic persons, 26 of whom were sensitized by surgical and 14 by cleaning latex gloves. 6/17 surgical gloves tested and 1/2 cleaning gloves caused positive reactions in almost all (over 87%) of the allergic subjects. In contrast, the frequencies of positive reactions to 4 other surgical latex gloves were as low as 8-21%, suggesting that not all surgical gloves are equally allergenic. Control prick tests with 1 synthetic rubber and 1 polyvinyl chloride (PVC) glove were negative in all subjects. 2 surgical latex gloves causing either a high or low number of positive prick tests in allergic subjects were analyzed with high-pressure liquid chromatography (HPLC). Similar allergenic protein fractions were detected, which showed protein peaks at MW 2000, 5000 and 30,000 daltons. Corresponding proteins were detected in 1 latex cleaning glove analyzed and in natural rubber. This result confirms that allergenic proteins persist in various surgical and cleaning latex gloves after manufacture from natural rubber and may cause contact urticaria symptoms in sensitized people.

  2. Permeability of nitrile rubber, latex, polyurethane, and neoprene gloves to 18 antineoplastic drugs.

    PubMed

    Connor, T H

    1999-12-01

    The permeability of four glove materials to various antineoplastic drugs was studied. Eighteen antineoplastic drugs posing potential health hazards to handlers were prepared at the highest concentrations normally encountered by hospital personnel. Four glove materials-nitrile rubber, latex, polyurethane, and neoprene-were exposed to the drugs for 30, 60, 90, and 120 minutes. Glove thickness was measured with an electronic digital caliper. Random samples of material were selected from the glove fingertips, and triplicate samples were tested for each drug at each interval. For a majority of the drugs, a bacterial mutagenicity assay was used to measure the amount of drug (if any) that permeated the material. High-performance liquid chromatography was used for drugs not tested with the bacterial assay. The nitrile gloves were the thinnest (0.12 mm), and the latex gloves were the thickest (0.18 mm). The four materials were generally impermeable to each drug. One sample of the nitrile gloves appeared to have a defect, allowing >5% of the drug solution to pass through at 30 minutes. One sample each of the latex, polyurethane, and neoprene gloves demonstrated minimal permeability (< or =1%): One latex glove sample was permeated by carmustine, and paclitaxel permeated one sample each of the polyurethane and neoprene materials. Nitrile rubber, latex, polyurethane, and neoprene gloves were impermeable to 18 antineoplastic drugs in most, but not all, cases.

  3. Vibration-reducing gloves: transmissibility at the palm of the hand in three orthogonal directions

    PubMed Central

    McDowell, Thomas W.; Dong, Ren G.; Welcome, Daniel E.; Xu, Xueyan S.; Warren, Christopher

    2015-01-01

    Vibration-reducing (VR) gloves are commonly used as a means to help control exposures to hand-transmitted vibrations generated by powered hand tools. The objective of this study was to characterise the vibration transmissibility spectra and frequency-weighted vibration transmissibility of VR gloves at the palm of the hand in three orthogonal directions. Seven adult males participated in the evaluation of seven glove models using a three-dimensional hand–arm vibration test system. Three levels of hand coupling force were applied in the experiment. This study found that, in general, VR gloves are most effective at reducing vibrations transmitted to the palm along the forearm direction. Gloves that are found to be superior at reducing vibrations in the forearm direction may not be more effective in the other directions when compared with other VR gloves. This casts doubts on the validity of the standardised glove screening test. Practitioner Summary This study used human subjects to measure three-dimensional vibration transmissibility of vibration-reducing gloves at the palm and identified their vibration attenuation characteristics. This study found the gloves to be most effective at reducing vibrations along the forearm direction. These gloves did not effectively attenuate vibration along the handle axial direction. PMID:24160755

  4. Fundamentals of the knowledge about chemical additives present in rubber gloves.

    PubMed

    Oliveira, Hegles Rosa de; Alchorne, Alice de Oliveira de Avelar

    2011-01-01

    One of the most frequent causes of allergic contact dermatitis of occupational origin are rubber additives, which are present in Personal Protective Equipment (PPE). The most allergenic additives of natural and synthetic gloves are thiurams, carbamates and mercapto group. To investigate the state of knowledge about the chemical additives used in the manufacture of synthetic rubber gloves. This was a qualitative research study in which professionals working in the manufacture, research, prescription and commercialization of gloves answered an open questionnaire. 30 individuals were interviewed: 4 researchers in occupational medicine, 5 occupational physicians, 2 occupational safety technicians, a rubber workers' union physician, an occupational safety engineer, a pro duction engineer of rubber gloves, 4 importers of gloves, a manufacturer of gloves, 3 businessmen who sell PPE, 3 salesclerks working in stores that sell PPE, 2 businessmen who own stores that sell products for allergic individuals, and 3 dermatologists. Knowledge of the chemical composition of rubber gloves is scant. The labeling of gloves, with the description of their chemical composition, would facilitate choosing the best type of glove for each person. This low-cost action to businesses would be a gain from the standpoint of public health, with huge repercussions for users of rubber gloves.

  5. Vibration-reducing gloves: transmissibility at the palm of the hand in three orthogonal directions.

    PubMed

    McDowell, Thomas W; Dong, Ren G; Welcome, Daniel E; Xu, Xueyan S; Warren, Christopher

    2013-01-01

    Vibration-reducing (VR) gloves are commonly used as a means to help control exposures to hand-transmitted vibrations generated by powered hand tools. The objective of this study was to characterise the vibration transmissibility spectra and frequency-weighted vibration transmissibility of VR gloves at the palm of the hand in three orthogonal directions. Seven adult males participated in the evaluation of seven glove models using a three-dimensional hand-arm vibration test system. Three levels of hand coupling force were applied in the experiment. This study found that, in general, VR gloves are most effective at reducing vibrations transmitted to the palm along the forearm direction. Gloves that are found to be superior at reducing vibrations in the forearm direction may not be more effective in the other directions when compared with other VR gloves. This casts doubts on the validity of the standardised glove screening test. Practitioner Summary: This study used human subjects to measure three-dimensional vibration transmissibility of vibration-reducing gloves at the palm and identified their vibration attenuation characteristics. This study found the gloves to be most effective at reducing vibrations along the forearm direction. These gloves did not effectively attenuate vibration along the handle axial direction.

  6. Transport of a solvent mixture across two glove materials when applied in a paint matrix.

    PubMed

    Tran, Jackelin Q; Ceballos, Diana M; Dills, Russell L; Yost, Michael G; Morgan, Michael S

    2012-07-01

    The transport of mixed paint solvents through natural rubber latex (4 mil) and nitrile rubber (5 mil) gloves was evaluated after spray application of the paint formulation directly on the glove surface. Glove materials and thicknesses were those selected by the majority of spray painters in the local automobile repair industry. A flat panel containing glove specimens mounted in multiple permeation cells permitted evaporation of solvents from the applied paint and incorporated a solid sorbent receiving medium for measuring glove membrane transport. The panel was sprayed in a paint booth to simulate use conditions. Charcoal cloth under the glove adsorbed transported solvents, which were quantified by gas chromatography. For each solvent component, results were expressed as mass transported through the glove relative to the mass applied, per unit area, during 30 min after spray application. The paint formulation contained ketones, acetates, and aromatics. Natural rubber latex allowed 6-10 times the transport of solvents relative to nitrile rubber for all eight solvent components: methyl ethyl ketone, toluene, styrene, ethyl benzene, xylene isomers, and 2-heptanone. m-Xylene showed the largest difference in transport between the two glove materials. This solvent also had the highest transport for each material. The results indicate that nitrile rubber gloves offer somewhat greater chemical resistance to all eight solvents studied compared with natural rubber latex gloves, regardless of the chemical properties of the individual solvent components. However, it must be emphasized that neither of the glove materials, in the thicknesses used in this study, provide adequate protection when exposed by direct spray painting. Simulation of realistic spray conditions may offer a source of useful information on the performance of chemical protective gloves because it accounts for solvent evaporation and the effect of paint polymerization after application on glove transport.

  7. [Incidence of hand eczema after surgical washing and use of surgical gloves].

    PubMed

    Barfred, L; Rasmussen, H H; Andersen, K E

    1993-04-26

    Contact dermatitis caused by surgical gloves is well known. Contact urticaria and anaphylactoid reactions among hospital personnel and patients following contact with latex gloves and glove dusting powder have previously been reported. A suspected increased frequency of hand eczema among personnel using detergents and surgical gloves in operating units initiated the present study. A questionnaire survey was performed in order to examine the frequency and degree of hand eczema among 332 surgeons and nurses working at the surgical units of Odense University Hospital during the period 1.6.-1.9.1989. A total of 242 persons (72%) answered the questionnaire. One hundred and fourteen persons (47%) claimed to develop skin discomfort or hand eczema following the washing procedure or use of surgical gloves. Among the personnel with skin problems 60% had spontaneously changed to another detergent/glove-product with subsequent clearing of the symptoms in 75% of the cases. Dermatological examination and patch tests were performed with European Standard series, gloves, rubber chemicals and selected soap components in 53 persons. Hand eczema was found in 16 persons (7%). Positive patch test reactions to latex gloves were found in four persons and only one person reacted to the rubber accelerators known to be present in the gloves according to the manufacturers' information. Among 26 persons with skin-discomfort and immediate symptoms, ten were prick tested with the standard battery of inhalant allergens, corn starch surgical glove powder, and extract of surgical gloves. Three persons reacted to glove extract, none reacted to glove powder.(ABSTRACT TRUNCATED AT 250 WORDS)

  8. Prevalence of allergy to latex gloves among dental professionals in Udaipur, Rajasthan, India.

    PubMed

    Agrawal, Anil; Bhatt, Nagesh; Kk, Shivlingesh; Singh, Karanprakash; Chaudhary, Harshvardhan; Asawa, Kailash

    2010-01-01

    Nowadays, gloves are worn routinely by most general dental practitioners while treating patients, with latex being the most commonly used glove material worldwide. The aim of the present study was to determine the prevalence of allergy to latex gloves among dental professionals of Udaipur, Rajasthan, India. In this cross-sectional study, a total of 163 dental professionals (73% males and 27% females) were surveyed using a pre-tested self-administered questionnaire. The questionnaire was comprised of a total of 12 items and gave information about the participants and their glove use, namely demographic profile, working habits and glove use, signs and symptoms related to glove use, any other type of allergy, as well as precautions taken to minimise it. The statistical analysis was performed using chi-square and Fisher's exact tests to compare frequency and percentage. The level of significance was set at P u 0.05. A total of 26 (16%) dental professionals reported allergy to latex gloves, of which females (27.3%) reported significantly greater allergy than males (11.8%) (P = 0.016). The number of years of glove use was significantly associated with allergy to latex gloves (P = 0.000). The prevalence of allergy to latex gloves was significantly greater for those who had allergy to pollen grains, foodstuffs and rubber dam, those who had asthma or history of eczema and those with family history of allergy. However, allergy to latex gloves was independent of age, type of gloves used, hours of use per day as well as number of patients seen per day. The present study showed a high rate of allergy to latex gloves among dental professionals in Udaipur, Rajasthan, India.

  9. Application of glove box robotics to hazardous waste management

    SciTech Connect

    Dennison, D.K.; Hurd, R.L.; Merrill, R.D.; Reitz, T.C.

    1995-02-01

    Lawrence Livermore Laboratory (LLNL) is developing a semi-automated system for handling, characterizing, processing, sorting, and repackaging hazardous wastes containing tritium. The system combines an IBM developed gantry robot with a special glove box enclosure designed to protect the operators and minimize the potential release of tritium to the atmosphere. All hazardous waste handling and processing will be performed remotely using the robot in a telerobotic mode for one-of-a-kind functions and in an autonomous mode for repetitive type operations. The system will initially be used in conjunction with a portable gas system designed to capture any gaseous phase tritium released into the glove box. This paper presents the objectives of this program, provides background related to LLNL`s robotics and waste handling program, describes the major system components, outlines system operation, and discusses current status and plans.

  10. Sensory substitution for space gloves and for space robots

    NASA Technical Reports Server (NTRS)

    Bach-Y-rita, P.; Webster, J. G.; Tompkins, W. J.; Crabb, T.

    1987-01-01

    Sensory substitution systems for space applications are described. Physical sensors replace missing human receptors and feed information to the interpretive centers of a different sense. The brain is plastic enough so that, with training, the subject localizes the input as if it were received through the missing receptors. Astronauts have difficulty feeling objects through space suit gloves because of their thickness and because of the 4.3 psi pressure difference. Miniature force sensors on the glove palm drive an electrotactile belt around the waist, thus augmenting the missing tactile sensation. A proposed teleoperator system with telepresence for a space robot would incorporate teleproprioception and a force sensor/electrotactile belt sensory substitution system for teletouch.

  11. A soft stretchable bending sensor and data glove applications.

    PubMed

    Shen, Zhong; Yi, Juan; Li, Xiaodong; Lo, Mark Hin Pei; Chen, Michael Z Q; Hu, Yong; Wang, Zheng

    2016-01-01

    Soft sensors are required to accommodate the flexible and deformable natures of the human body in wearable device applications. They are also suitable for integration with soft robotic devices to monitor the performance status and provide references for feedback control. However, the choices for bending sensors are still highly limited. In this paper, a soft bending sensor is presented. By careful design with a blend of sensitive and insensitive regions, the sensor could be stretchable while being insensitive to stretching. An analytical study was presented on how to design the sensor with the named bending/stretching feature. This feature enables the sensor to be implemented in measuring human motions where a large amount of skin stretch is involved. Two sensor gloves were designed and fabricated based on the proposed soft bending sensor, aiming for different application scenarios. Both the sensor and the gloves were evaluated using a dedicated evaluation platform with experimental results compared against each other.

  12. Scientific assay methods as the basis for glove selection.

    PubMed

    Beezhold, D H; Fay, M F; Sussman, G L

    1994-01-01

    Allergies to latex proteins and glove chemicals are increasing in the clinical practice setting. Inasmuch as latex is ubiquitous in the health environment, individuals may be exposed to latex antigens by a number of different routes, including compromised skin, mucous membranes of the respiratory and urogenital tracts, and internally during surgery. As demonstrated by numerous research articles, the key factors that appear to play a role in acquired latex hypersensitivity are chemicals used in the manufacture of products; the level of residual latex proteins, and the presence of glove powder, which binds latex protein. Currently, devices and materials containing latex are not labeled, although this may be rectified by the FDA in the near future. Until products are labeled, it is important for physicians to familiarize themselves with the routes of sensitization, variations in assay methods, and the type and amount of allergen in products in order to select the safest product for patient use and personal protection.

  13. Wearable EDA sensor gloves using conducting fabric and embedded system.

    PubMed

    Lee, Y B; Yoon, S W; Lee, C K; Lee, M H

    2006-01-01

    We developed wearable EDA sensor gloves using conducting fabric and embedded system. EDA(Electro-dermal Activity) signal is an electric response on the skin of the human body. There are SCL(Skin Conductance Level) and SCR(Skin Conductance Response) in EDA. Mostly, SCL consists of DC elements. On the other hand, SCR consists of AC elements. We use the relationship between the drowsiness condition and EDA signal We made EDA sensors using conducting fabric instead of Agcl electrode for a more suitable wearable device. And we used an embedded system for EDA signal acquisition and processing instead of a personal computer, which is connected to the EDA sensor gloves through conducting fabric lines. Also, the embedded system is linked to a Notebook PC that shows the results of EDA signal processing analysis and gives proper feedback to the user. This system, for example, can be used in detecting and preventing drowsiness driving accidents for automobile drivers.

  14. Putting Lives on the Line: The Fast Rope Glove Challenge

    DTIC Science & Technology

    2012-06-01

    conductivity. They were 1) Silica Aerogel , 2) Silica/Ceramic NASA Q-Fiber and 3) Nomex/Kevlar. Silica Aerogel has the lowest thermal conductivity...of any known solid and was recently made into a viable material by the company Aspen Aerogel .3 The other materials have lower conductivity than the...blend and a silica aerogel pad that could be incorporated into the palms and finger pads of the glove. For this evaluation, we tested: • The Superior

  15. Service War Test Evaluation of Structural/Proximity Firefighters Gloves

    DTIC Science & Technology

    1991-06-05

    banana clip to pin down the injection seat release. It was felt that the thumb and finger lengths were too long and bulky. For structural firefighting...show any of the following surface or fabric failures ? Cracking No ------------- Yes (location)--------- Flaking or peeling No ------------- Yes...Gloves, NCTRF, February 1987), it was noted that a composite as light as a 4.0 oz/yd 2 Kevlar shell (aluminized by the Gentex process); PTFE moisture

  16. Design of a Power-Assisted Spacesuit Glove Actuator

    NASA Technical Reports Server (NTRS)

    Howard, Russell D.

    2000-01-01

    This paper presents the details of the design and implementation of an electromechanical power-assisted spacesuit glove actuator. The project was a joint effort by the University of Maryland's Space Systems Laboratory and ILC Dover, Inc., and involved innovative approaches to power augmentation and compact actuator packaging. The first actuator built validated several basic design concepts, and the second demonstrated improved performance and met many of the goals for flight qualification of the technology.

  17. Design of a Power-Assisted Spacesuit Glove Actuator

    NASA Technical Reports Server (NTRS)

    Howard, Russell D.

    2000-01-01

    This paper presents the details of the design and implementation of an electromechanical power-assisted spacesuit glove actuator. The project was a joint effort by the University of Maryland's Space Systems Laboratory and ILC Dover, Inc., and involved innovative approaches to power augmentation and compact actuator packaging. The first actuator built validated several basic design concepts, and the second demonstrated improved performance and met many of the goals for flight qualification of the technology.

  18. MINIMIZING GLOVEBOX GLOVE BREACHES, PART IV: CONTROL CHARTS

    SciTech Connect

    COURNOYER, MICHAEL E.; LEE, MICHELLE B.; SCHREIBER, STEPHEN B.

    2007-02-05

    At the Los Alamos National Laboratory (LANL) Plutonium Facility, plutonium. isotopes and other actinides are handled in a glovebox environment. The spread of radiological contamination, and excursions of contaminants into the worker's breathing zone, are minimized and/or prevented through the use of glovebox technology. Evaluating the glovebox configuration, the glovebo gloves are the most vulnerable part of this engineering control. Recognizing this vulnerability, the Glovebox Glove Integrity Program (GGIP) was developed to minimize and/or prevent unplanned openings in the glovebox environment, i.e., glove failures and breaches. In addition, LANL implement the 'Lean Six Sigma (LSS)' program that incorporates the practices of Lean Manufacturing and Six Sigma technologies and tools to effectively improve administrative and engineering controls and work processes. One tool used in LSS is the use of control charts, which is an effective way to characterize data collected from unplanned openings in the glovebox environment. The benefit management receives from using this tool is two-fold. First, control charts signal the absence or presence of systematic variations that result in process instability, in relation to glovebox glove breaches and failures. Second, these graphical representations of process variation detennine whether an improved process is under control. Further, control charts are used to identify statistically significant variations (trends) that can be used in decision making to improve processes. This paper discusses performance indicators assessed by the use control charts, provides examples of control charts, and shows how managers use the results to make decisions. This effort contributes to LANL Continuous Improvement Program by improving the efficiency, cost effectiveness, and formality of glovebox operations.

  19. Minimizing glovebox glove breaches, Part 4: control charts

    SciTech Connect

    Cournoyer, M.E.; Lee, M.B.; Schreiber, S.

    2007-07-01

    At the Los Alamos National Laboratory (LANL) Plutonium Facility, plutonium isotopes and other actinides are handled in a glovebox environment. The spread of radiological contamination, and excursions of contaminants into the worker's breathing zone, are minimized and/or prevented through the use of glovebox technology. Evaluating the glovebox configuration, the glovebox gloves are the most vulnerable part of this engineering control. Recognizing this vulnerability, the Glovebox Glove Integrity Program was developed to minimize and/or prevent unplanned openings in the glovebox environment, e.g., glove failures and breaches. In addition, LANL implement the 'Lean Six Sigma (LSS)' program that incorporates the practices of Lean Manufacturing and Six Sigma technologies and tools to effectively improve administrative and engineering controls and work processes. One tool used in LSS is the use of control charts, which is an effective way to characterize data collected from unplanned openings in the glovebox environment. The benefit management receives from using this tool is two-fold. First, control charts signal the absence or presence of systematic variations that result in process instability, in relation to glovebox glove breaches and failures. Second, these graphical representations of process variation determine whether an improved process is under control. Further, control charts are used to identify statistically significant variations (trends) that can be used in decision making to improve processes. This paper discusses performance indicators assessed by the use control charts, provides examples of control charts, and shows how managers use the results to make decisions. This effort contributes to LANL Continuous Improvement Program by improving the efficiency, cost effectiveness, and formality of glovebox operations. (authors)

  20. Cotton liners to mediate glove comfort for greenhouse applicators.

    PubMed

    Stone, J; Coffman, C; Imerman, P M; Song, K; Shelley, M

    2005-10-01

    Greenhouse applicators' acceptance of cotton knit gloves worn as liners under nitrile chemical-resistant gloves (CRG) for pesticide application was investigated through a wear study in Iowa and New York. Comfort was assessed by questionnaires and interviews with 10 applicators. Contamination levels of four pesticides on CRG and liners at thumb, forefinger, palm, and cuff locations were determined by chemical analysis using high-performance liquid chromatography or gas chromatography. Applicators reported feeling more comfortable with cotton liners under their CRG than without and that cotton liners were easy to manage. Contamination was significantly greater on nitrile CRG than on cotton liners underneath, but a few liner specimens had measurable contamination. No significant contamination differences were found between right- and left-hand gloves. Contamination varied significantly by hand location, with cuffs least, and by pesticide, with chlorpyrifos most. These results support the Environmental Protection Agency's recommendation that liners should be disposable, but further work on liners and their laundering feasibility seems indicated.

  1. Single incision glove port laparoscopic colorectal cancer resection

    PubMed Central

    Joshi, HMN; Gosselink, MP; Adusumilli, S; Hompes, R; Cunningham, C; Lindsey, I

    2015-01-01

    Introduction The advantages of single port surgery remain controversial. This study was designed to evaluate the safety and feasibility of single incision glove port colon resections using a diathermy hook, reusable ports and standard laparoscopic straight instrumentation. Methods Between June 2012 and February 2014, 70 consecutive patients (30 women) underwent a colonic resection using a wound retractor and glove port. Forty patients underwent a right hemicolectomy through the umbilicus and thirty underwent attempted single port resection via an incision in the right rectus sheath (14 high anterior resection, 13 low anterior resection, 3 abdominoperineal resection). Results Sixty-two procedures (89%) were completed without conversion to open or multiport techniques. Four procedures had to be converted and additional ports were needed in four other patients. The postoperative mortality rate was 0%. Complications occurred in six patients (9%). Two cases were R1 while the remainder were R0 with a median nodal harvest of 20 (range: 9–48). The median length of hospital stay was 5 days (range: 3–25 days) (right hemicolectomy: 5 days (range: 3–12 days), left sided resection: 6 days (range: 4–25 days). At a median follow-up of 14 months, no port site hernias were observed. Conclusions Single incision glove port surgery is an appropriate technique for different colorectal cancer resections and has the advantage of being less expensive than surgery with commercial single incision ports. PMID:26263805

  2. Development of a fingertip glove equipped with magnetic tracking sensors.

    PubMed

    Fahn, Chin-Shyurng; Sun, Herman

    2010-01-01

    In this paper, we present the development of a data glove system based on fingertip tracking techniques. To track the fingertip position and orientation, a sensor module and two generator coils are attached on the fingertip and metacarpal of the corresponding finger. By tracking the fingertip, object manipulation tasks in a virtual environment or teleoperation system can be carried out more precisely, because fingertips are the foremost areas that reach the surface of an object in most of grasping processes. To calculate the bending angles of a finger, we also propose a method of constructing the shape of the finger. Since the coils are installed on the fingertips and metacarpals, there is no contact point between the sensors and finger joints. Hence, the shape of the sensors does not change as the fingers are bending, and both the quality of measurement and the lifetime of the sensors will not decrease in time. For the convenience of using this glove, a simple and efficient calibration process consisting of only one calibration gesture is also provided, so that all required parameters can be determined automatically. So far, the experimental results of the sensors performing linear movement and bending angle measurements are very satisfactory. It reveals that our data glove is available for a man-machine interface.

  3. A modular dexterous robot for glove box applications

    SciTech Connect

    Walker, E.W. Jr.; Igou, R.E.; Karlen, J.P.; Kowalski, K.A.; Eismann, P.H.

    1994-11-01

    Many industrial processes today require the use of {open_quotes}glove boxes{close_quotes} {emdash} environmentally sealed chambers designed to allow access by human workers through ports fitted with protective gloves. A new technology for the automation of complex material-handling functions is described in this paper. The advantages of an agile robotic manipulator system being used in this application are discussed, including reduced life-cycle cost of automation, enhanced ability to respond to changes in process requirements, and improved reliability and maintainability. This paper also reviews lessons learned in applying an highly dexterous modular robot to a glove box environment, such as the evaluation of arm kinematics to achieve the required work envelope, system payload capacity, methods for automated tooling changes, tolerance of the arm mechanism and electronics to exposure to industrial chemicals and an argon atmosphere, the benefits of arm modularity for system maintenance, safety concerns, the integration of high-level control technology and off-line development of process motion sequences.

  4. Infection control. 1: A practical guide to glove usage.

    PubMed

    Parker, L J

    With increased demands from the general public for healthcare professionals to be accountable for their actions, many are becoming familiar with clinical governance and other initiatives to improve clinical practice. Good infection control is central to nursing practice. To achieve higher standards of clinical practice, especially when thinking about how to reduce the risk of cross-infection, it is necessary to not only do the right thing, but also do the thing right. Safe practice should be uppermost in the minds of healthcare professionals when caring for patients. This new series of articles attempts to look at the practical aspects of infection control, highlighting the requirements for risk assessment and applying the principles of infection control to a variety of patient care situations. This article investigates the use of protective clothing and gloves. It looks at the types of gloves available for use, the importance of choosing the correct glove for the task to be undertaken, and the modern day problems of allergies to latex.

  5. [Single port laparoscopic colostomy using the glove technique].

    PubMed

    Rodicio Miravalles, José L; Rodríguez García, José I; Llaneza Folgueras, Ana; Avilés García, Paulino; González González, Juan J

    2014-01-01

    The single port surgery with glove technique is a novel process, suitable to the present day economic and technological moment. Colostomies are surgical interventions suitable to its application. We describe the surgical method and outcome of patients who underwent colostomy by single port glove technique within the years 2011 and 2012, in two hospitals in Asturias, Spain. We carried out six sigmoid colostomies. Four patients had tumoral pathology, another a perineal necrotizing fasciitis, and the sixth, a patient with Crohn's disease and complex perianal fistulas. The average age of the patients, four men and two women, was 54 years (range 42-67 years). The average intervention time was 42 minutes (range 30-65 minutes). There were no complications during the surgery or in the postoperative period. In our facilities material expenditure was reduced to half as regards other conventional single port devices. The glove technique represents the most economic and least invasive approach for the surgical procedure of stomas, in our experience considered a simple, safe and easily reproducible technique.

  6. Tritium stripping in a nitrogen glove box using palladium/zeolite and SAES St 198

    SciTech Connect

    Klein, J.E.; Wermer, J.R.

    1995-10-01

    Glove box clean-up experiments were conducted in a nitrogen glove box using palladium deposited on zeolite (Pd/z) and a SAES St 198 getter as tritium stripping materials. Protium/deuterium samples spiked with tritium were released into a 620 liter glove box to simulate tritium releases in a 10,500 liter glove box. The Pd/z and the SAES St 198 stripper beds produced a reduction in tritium activity of approximately two to three orders of magnitude and glove box clean-up was limited by a persistent background tritium activity level. Attempts to significantly reduce the glove box activity to lower levels without purging were unsuccessful. 3 refs., 6 figs., 1 tab.

  7. Tritium stripping in a nitrogen glove box using palladium/zeolite and SAES St 198{trademark}

    SciTech Connect

    Klien, J.E.; Wermer, J.R.

    1995-01-01

    Glove box clean-up experiments were conducted in a nitrogen glove box using palladium deposited on zeolite (Pd/z) and a SAES St 198{trademark} getter as tritium stripping materials. Protium/deuterium samples spiked with tritium were released into a 620 liter glove box to simulate tritium releases in a 10,500 liter glove box. The Pd/z and the SAES St 198{trademark} stripper beds produced a reduction in tritium activity of approximately two to three orders of magnitude and glove box clean-up was limited by a persistent background tritium activity level. Attempts to significantly reduce the glove box activity to lower levels without purging were unsuccessful.

  8. Extravehicular activities limitations study. Volume 2: Establishment of physiological and performance criteria for EVA gloves

    NASA Technical Reports Server (NTRS)

    Ohara, John M.; Briganti, Michael; Cleland, John; Winfield, Dan

    1988-01-01

    One of the major probelms faced in Extravehicular Activity (EVA) glove development has been the absence of concise and reliable methods to measure the effects of EVA gloves on human hand capabilities. This report describes the development of a standardized set of tests designed to assess EVA-gloved hand capabilities in six measurement domains: Range of Motion, Strength, Tactile Perception, Dexterity, Fatigue, and Comfort. Based on an assessment of general human hand functioning and EVA task requirements several tests within each measurement domain were developed to provide a comprehensive evaluation. All tests were designed to be conducted in a glove box with the bare hand as a baseline and the EVA glove at operating pressure. A test program was conducted to evaluate the tests using a representative EVA glove. Eleven test subjects participated in a repeated-measures design. The report presents the results of the tests in each capability domain.

  9. Decontamination and reconditioning of the Argonne National Laboratory-West Casting Laboratory alpha glove box

    SciTech Connect

    Poston, J.W. Jr.; Burke, L.L.

    1998-12-31

    The Casting Laboratory (CL) alpha glove box was used to melt and cast metallic uranium and plutonium fuels as part of the Department of Energy`s Liquid Metal Fast Breeder Reactor Program. This highly contaminated alpha glove box was decontaminated and reconditioned to allow a change in mission. The goal of reconditioning was to install experimental apparatus and to improve contamination control prior to introducing plutonium-238 into the CL glove box. Construction of a glove box containment structure and an increase in room ventilation were required. A temporary breathing air station was provided for personnel protection as well as personnel comfort. The historical contamination levels, the decontamination techniques, and the results of decontamination also are presented. The health physics aspects of the CL alpha glove box project may be applicable to other glove box refurbishment or decommissioning projects.

  10. Determination of key dimensions for a glove sizing system by analyzing the relationships between hand dimensions.

    PubMed

    Kwon, Ochae; Jung, Kihyo; You, Heecheon; Kim, Hee-Eun

    2009-07-01

    The present study identified key dimensions for the development of a glove sizing system by analyzing the relationships between hand dimensions and demonstrated the construction process of glove sizing systems based on the selected key dimensions. Three hand dimensions (HL: hand length; HC: hand circumference; HB: hand breadth) were selected as the candidates of glove key dimensions by surveying the literature and industry practices of glove sizing systems. Of the key dimension candidates, HL and HC were selected by examining the results of correlation and multiple regression analyses on the 1988 US Army hand anthropometric data. A cross-tabulation of HL and HC with an interval length of 1.3 cm was constructed for each gender and the corresponding lengths and circumferences of cells covering more than 2% of the population were used to provide glove sizing parameters. It was identified that the glove sizing system for males is different from that for females and has more size categories.

  11. Purple L1 Milestone Review Panel - MPI

    SciTech Connect

    Jones, T

    2006-12-07

    The MPI deliverables for the Purple system were designed to ensure that applications which depend on MPI benefit from a robust, functionally complete, and high performance MPI. We specifically targeted three categories of MPI validation: robustness, functionally complete, and high performance. These three categories were intended to address the following needs: (1) Robustness - It doesn't matter how fast you arrive at an answer if the answer is wrong. Since any new flagship machine for the DOE complex will have pushed the envelope for scale, tests were designed to investigate behavior at scale. (2) Functionally complete - MPI functionality concerns usually deal more with coverage than concerns over correctness (no doubt a result of the maturity of the specification). We validated the desired interfaces are present and their operation proceeds as expected. (3) High performance - For a software stack to be considered 'high performance' it must efficiently deliver the capabilities of the underlying hardware and provide levels of performance in keeping with the leading machines of the time. LLNL established separate items for each of the three component areas of robustness, functionally complete, and high performance. Included in functionality was a demonstration of scaling to 8192 tasks, a demonstration of scalable memory usage, acceptable documentation, and full MPI-2 minus dynamic tasking. The robustness element for MPI was addressed separately via full MPI application MTBF in the Synthetic Workload (SWL). In November of 2005, a series of tests were performed on Purple in which all MPI performance and functionality Statement of Work items were passed, save one item. A table outlines the performance measurements. The final performance metric, bi-section bandwidth, was achieved in January 2006 (see Table 2). LLNL and IBM undertook an effort to understand the extent of impact for various levels of shortfall on ASC applications while other efforts continued in parallel

  12. A comparative analysis of glove permeation resistance to paint stripping formulations.

    PubMed

    Stull, Jeffrey O; Thomas, Richard W; James, Lawrence E

    2002-01-01

    Although there is a wide variety of work gloves available to users of commercial paint stripping products, there are no published studies examining which type of gloves provide the best protection. To address this need, a multiphase study was undertaken to evaluate how several types of gloves resist multichemical-based paint stripping formulations. Due to the wide range of commercial paint stripping formulations available, seven categories of surrogate paint stripper formulations were created to evaluate glove performance initially. Twenty different glove types were identified for initial evaluation. Degradation resistance screening was carried out for each glove style and paint stripping formulation. Screening results were used to identify those glove styles least affected by the surrogate paint strippers. Those gloves were then evaluated for their resistance to permeation using continuous contact testing based on ASTM Test Method F 739. Glove styles showing extensive permeation with early breakthrough were then evaluated to see how they performed with only intermittent contact with the surrogate paint strippers using a modified form of ASTM Test Method F 1383. These results were used to select glove styles to be tested using commercially available paint stripping products. Gloves made of plastic laminate and butyl rubber were the most effective against the majority of paint strippers. More glove styles resisted permeation by N-methylpyrrolidone and dibasic ester-based paint strippers than conventional solvent products such as methylene chloride, methanol, isopropanol, acetone, and toluene. The study also found that decreased contact time caused relatively little change in permeation resistance and that the surrogate paint stripper data did not always accurately predict resistance to the commercial paint stripper formulations.

  13. Dexterity test data contribute to reduction in leaded glovebox gloves use

    SciTech Connect

    Cournoyer, Michael E; Lawton, Cindy M; Castro, Amanda M; Costigan, Stephen A; Schreiber, Stephen

    2009-01-01

    Programmatic operations at the Los Alamos National Laboratory Plutonium Facility (T A-55) involve working with various amounts of plutonium and other highly toxic, alpha-emitting materials. The spread of radiological contamination on surfaces, airborne contamination, and excursions of contaminants into the operator's breathing zone are prevented through the use of a variety of gloveboxes. Using an integrated approach, controls have been developed and implemented through an efficient Glovebox Glove Integrity Program. A key element of this program is to consider measures that lower the overall risk of glovebox operations. Line management who own glovebox processes through this program make decisions on which type of glovebox gloves (hereafter referred to as gloves), the weakest component of this safety-significant system, would perform best in these aggressive environments. As Low as Reasonably Achievable considerations must be balanced with glove durability and worker dexterity, both of which affect the final overall risk of the operation. In the past, lead-loaded (leaded) gloves made from Hypalon(reg.) were the primary glove for programmatic operations at TA55. Replacing leaded gloves with unleaded gloves for certain operations would lower the overall risk as well as reduce the amount of mixed transuranic waste. This effort contributes to the Los Alamos National Laboratory Continuous Improvement Program by improving the efficiency, cost-effectiveness, and formality of glovebox operations. In this report, the pros and cons of wearing leaded gloves, the effect of leaded gloves versus unleaded gloves on task performance using standard dexterity tests, the justification for switching from leaded to unleaded gloves, and the pollution prevention benefits of this dramatic change in the glovebox system are presented.

  14. Testing of gloves for permeability to UV-curable acrylate coatings

    SciTech Connect

    Huggins, R.; Levy, N.; Pruitt, P.M.

    1987-07-01

    The handling of UV-curable acrylate formulations used in the coating of optical fiber requires protective measures to prevent contact dermatitis and/or allergic dermatitis. To characterize the permeability of various glove materials to a UV-curable acrylate coating, a study was undertaken using a modification of a standard ASTM permeability test, which demonstrated that nitrile rubber gloves provided the best protection of those glove materials tested.

  15. Purple L1 Milestone Review Panel TotalView Debugger Functionality and Performance for ASC Purple

    SciTech Connect

    Wolfe, M

    2006-12-12

    ASC code teams require a robust software debugging tool to help developers quickly find bugs in their codes and get their codes running. Development debugging commonly runs up to 512 processes. Production jobs run up to full ASC Purple scale, and at times require introspection while running. Developers want a debugger that runs on all their development and production platforms and that works with all compilers and runtimes used with ASC codes. The TotalView Multiprocess Debugger made by Etnus was specified for ASC Purple to address this needed capability. The ASC Purple environment builds on the environment seen by TotalView on ASCI White. The debugger must now operate with the Power5 CPU, Federation switch, AIX 5.3 operating system including large pages, IBM compilers 7 and 9, POE 4.2 parallel environment, and rs6000 SLURM resource manager. Users require robust, basic debugger functionality with acceptable performance at development debugging scale. A TotalView installation must be provided at the beginning of the early user access period that meets these requirements. A functional enhancement, fast conditional data watchpoints, and a scalability enhancement, capability up to 8192 processes, are to be demonstrated.

  16. Colored Indicator Undergloves Increase the Detection of Glove Perforations by Surgeons During Small Animal Orthopedic Surgery: A Randomized Controlled Trial

    PubMed Central

    Gilman, Oliver P.; Parsons, Kevin J.; Burton, Neil J.; Langley‐Hobbs, Sorrel J.

    2016-01-01

    Objective To determine whether use of colored indicator gloves affects perforation detection rate and to identify risk factors for glove perforation during veterinary orthopedic surgery. Study Design Prospective randomized controlled trial. Sample Population 574 double pairs of gloves worn during 300 orthopedic surgical procedures (2,296 gloves). Methods Primary and assistant surgeons double‐gloved for all orthopedic surgical procedures. Type of inner glove (standard or colored indicator) was randomized for the first 360 double pairs of gloves worn by surgeons during 180 procedures. Perforations detected by surgeons were recorded and gloves changed if requested. For a further 120 procedures, indicator gloves were used exclusively. All gloves were leak‐tested after surgery to identify perforations. Association between potential risk factors and perforation was explored using multivariate logistical regression analysis. Results Glove perforations occurred during 43% of surgeries with a mean of 2.3 holes/surgery. Inner gloves were intact in 63% of glove pairs where an outer perforation occurred. Intraoperative perforation detection was improved when colored indicator gloves were worn (83% sensitivity) vs. standard gloves (34% sensitivity; P<.001). Independent risk factors for perforation were placement of plates and/or screws (P=.001; OR=2.4; 95% CI, 1.4–4.0), placement of an external skeletal fixator (P=.002; OR=7.0; 95% CI, 2.1–23.8), use of orthopedic wire (P=.011; OR=2.4; 95% CI, 1.2–4.7), and primary surgeon being board‐certified (P=.016; OR=1.9; 95% CI, 1.1–3.1). Conclusion Increased surgeon recognition of glove perforations through use of colored indicator gloves enables prompt change of gloves if perforation occurs and may reduce potential contamination of the surgical site. PMID:27412490

  17. Antioxidant properties of various solvent extracts from purple basil

    NASA Astrophysics Data System (ADS)

    Yeşiloğlu, Yeşim; Şit, Latifşah

    2012-09-01

    Water, ethanol and acetone extracts from leaves and flowers of purple basil, one of the most popular spices consumed in the Thrace region of Turkey, were tested in vitro for their ability to inhibit peroxidation of lipids, to scavenge DPPH, hydrogen peroxide, superoxide anion, to reduce Fe(III) to Fe(II) and to chelate Fe(II) ions. The results showed that purple basil contained naturally occurring antioxidant components and possessed antioxidant activity which may be attributed to its lipid peroxidation inhibitory, radical scavenging and metal chelating activities. It was concluded that purple basil might be a potential source of antioxidants.

  18. Major anthocyanins from purple asparagus (Asparagus officinalis).

    PubMed

    Sakaguchi, Yumi; Ozaki, Yukio; Miyajima, Ikuo; Yamaguchi, Masaatsu; Fukui, Yuko; Iwasa, Keiko; Motoki, Satoru; Suzuki, Takashi; Okubo, Hiroshi

    2008-05-01

    Two major anthocyanins (A1 and A2) were isolated from peels of the spears of Asparagus officinalis cv. Purple Passion. They were purified by column, paper and high-performance liquid chromatographic separations, and their structures were elucidated by high-resolution Fourier transform ion cyclotron resonance mass spectrometry (HR-FT-ICR MS), 1H, 13C and two-dimensional NMR spectroscopic analyses and either acid or alkaline hydrolysis, respectively. A1 was identified as cyanidin 3-[3''-(O-beta-d-glucopyranosyl)-6''-(O-alpha-l-rhamnopyranosyl)-O-beta-d-glucopyranoside], whereas A2 was cyanidin 3-rutinoside, which is widely distributed in higher plants. Oxygen radical absorbance capacity (ORAC) assays proved their high antioxidant activities.

  19. Incoming editorial: bigger, purple, pragmatic, and parsimony.

    PubMed

    Hilsenroth, Mark J

    2011-03-01

    It is with great excitement and enthusiasm that I write to you regarding several updates, new initiatives and changes with our journal. As you may have already noticed, this includes the change to a larger format, and a return to the color purple that helped define this journal from the early 1980s through the turn of the century, as well as to the original title "Psychotherapy." The change in format will allow us to benefit from the standard American Psychological Association (APA) journal design and layout, leading to more efficient processing and arrangement within their electronic journal system. I have found this first year as the Incoming Editor of Psychotherapy to be as challenging, rewarding, and intellectually stimulating as I imagined it would be, and I remain quite excited and enthusiastic about the work ahead.

  20. Permeation of hair dye ingredients, p-phenylenediamine and aminophenol isomers, through protective gloves.

    PubMed

    Lee, Hsiao-Shu; Lin, Yu-Wen

    2009-04-01

    Skin irritation and contact allergies are skin disorders common to hairdressers. The predominant oxidative hair dye components, such as p-phenylenediamine (PPD) and aminophenol isomers, can cause contact dermatitis. Use of protective gloves can prevent dermal contact with skin irritants. This study investigates the permeation behaviors of p-aminophenol (PAP), m-aminophenol (MAP), o-aminophenol (OAP) and PPD in single and mixed challenge solutions with disposable natural rubber latex (NRL) gloves, disposable polyvinylchloride (PVC) gloves and neoprene (NP) gloves. The challenge solutions were 4% PPD (w/v), 3% OAP (w/v), 2% PAP (w/v) and 2% MAP (w/v) in ethanol or 12% hydrogen peroxide solutions. The cocktail solutions of the four chemicals were also tested. An American Society for Testing and Materials type permeation cell, ethanol liquid collection and gas chromatography-flame ionization detection of samples taken from the collection medium every 10 min facilitated determination of breakthrough times (BTs), cumulative permeated masses and steady-state permeation rates (SSPRs). Experiments were 4 h long for the NRL and PVC gloves and 8 h for NP gloves. No chemicals tested broke through the NP gloves when exposed for 8 h. In the ethanol solution, PPD and OAP started breaking through the PVC gloves at 40 min. The SSPRs of PVC gloves were higher than those for NRL gloves in all challenge conditions for both single chemicals and mixtures. No tested chemicals in hydrogen peroxide solutions permeated the gloves during the 4-h tests. The chemical composition of the challenge solution was a main effecter of BTs and SSPRs for the NRL glove. For disposable PVC gloves, the main factors of BTs were molecular size [molar volume (MV)] and polarity (logK(ow)), and the primary factors of SSPRs were concentration, MV and logK(ow). In conclusion, disposable NRL gloves and disposable PVC gloves should not be used repeatedly for handling the hair dye products. Hydrogen peroxide did not

  1. Design and structural analysis of highly mobile space suits and gloves.

    PubMed

    Main, J A; Peterson, S W; Strauss, A M

    1994-01-01

    This paper evaluates the factors that control the flexibility of fabric space-suit elements, in particular gloves, by examining a bending model of a pressurized fabric tube. Results from the model are used to evaluate the design strategies used in space-suit components, to evaluate the current direction in research on highly mobile space-suit gloves and to suggest changes necessary for optimum glove fabric selection. Finally it is shown that the modulus of the fabric used in space-suit joint construction is as important to the flexibility of the joint as the glove size and design.

  2. NMR study of the interaction of cations with purple membrane and of the purple-blue transition

    SciTech Connect

    Roux, M.; Seigneuret, M.; Rigaud, J.L.

    1988-09-06

    The authors have studied by /sup 31/P NMR both the native purple membrane and the deionized membrane obtained by removal of endogenous cations. The latter membrane was shown to undergo a blue to purple color transition with increasing pH. In parallel with this color transition, the /sup 31/P NMR spectrum obtained at high membrane concentration was dramatically changed from a normal bilayer powder pattern to a seemingly inverted line shape. This effect was not observed in native purple membrane and was found to be reversed by addition of cations to the deionized purple membrane. Several data indicated that this inversion of the /sup 31/P NMR line shape is due to orientation of the membrane fragments perpendicular to the magnetic field. Further studies indicated that both native and deionized purple membranes can undergo such magnetic orientation but that the favorable concentration range is greatly increased for the deionized preparation. This effect is attributed to differences in bacteriorhodopsin conformation and/or membrane surface charge in the two membranes. Binding of divalent cations to the purple membranes was shown to promote an increase of the chemical shift anisotropy of phospholipid phosphate groups as revealed by /sup 31/P NMR. Accordingly, binding of a trivalent paramagnetic cation promoted strong broadening of the /sup 31/P NMR spectrum. This suggests a close spatial or structural relationship between phospholipid head groups and cation binding sites in the purple membrane.

  3. Tensile Properties and Integrity of Clean Room and Low-Modulus Disposable Nitrile Gloves: A Comparison of Two Dissimilar Glove Types

    PubMed Central

    Phalen, Robert N.; Wong, Weng kee

    2012-01-01

    Background: The selection of disposable nitrile exam gloves is complicated by (i) the availability of several types or formulations, (ii) product variability, and (iii) an inability of common quality control tests to detect small holes in the fingers. Differences in polymer formulation (e.g. filler and plasticizer/oil content) and tensile properties are expected to account for much of the observed variability in performance. Objectives: This study evaluated the tensile properties and integrity (leak failure rates) of two glove choices assumed to contain different amounts of plasticizers/oils. The primary aims were to determine if the tensile properties and integrity differed and if associations existed among these factors. Additional physical and chemical properties were evaluated. Methods: Six clean room and five low-modulus products were evaluated using the American Society for Testing and Materials Method D412 and a modified water-leak test to detect holes capable of passing a virus or chemical agent. Results: Significant differences in the leak failure rates and tensile properties existed between the two glove types (P ≤ 0.05). The clean room gloves were about three times more likely to have leak failures (chi-square; P = 0.001). No correlation was observed between leak failures and tensile properties. Solvent extract, an indication of added plasticizer/oil, was not associated with leak failures. However, gloves with a maximum modulus <4 MPa or area density (AD) <11 g cm−2 were about four times less likely to leak. Conclusions: On average, the low-modulus gloves were a better choice for protection against aqueous chemical or biological penetration. The observed variability between glove products indicated that glove selection cannot rely solely on glove type or manufacturer labeling. Measures of modulus and AD may aid in the selection process, in contrast with common measures of tensile strength and elongation at break. PMID:22201179

  4. Walker's Critique of Religion in "The Color Purple."

    ERIC Educational Resources Information Center

    Mercer, Calvin

    1989-01-01

    Highlights religious themes in Alice Walker's "The Color Purple," especially Celie's struggle with traditional Christianity, which here serves to reinforce oppression. Her journey toward spiritual independence reflects much of the actual religious experience of Black women in America. (DM)

  5. Spectroscopic research on purple sulphur bacteria Chromatium sp. in vivo

    NASA Astrophysics Data System (ADS)

    Milukov, Anton S.; Patsayeva, Svetlana V.; Rostovtseva, Elena L.; Yuzhakov, Viktor I.

    2006-05-01

    Phototrophic purple sulphur bacteria represent an important constituent of coastal zone biota and a crucial link of sulphur cycling in the nature. Purple bacteria are widespread in the environment occurring almost in every water basin and also in soil. The spectroscopic research was performed in vivo on purple sulphur bacteria Chromatium sp. in different culture development stages and illumination conditions during culture growth. Possibilities of purple bacteria quantification in vivo using absorbance and fluorescence intensities are described. The experiments revealed the possibility of application of the intensities ratio of porphyrin pigments emission to cell blue fluorescence for the estimation of the culture physiological status. These findings may be used for improvement of remote sensing techniques of ecological monitoring.

  6. View of Flume Tunnel #3 through Purple Mountain, showing flume ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    View of Flume Tunnel #3 through Purple Mountain, showing flume entering into the tunnel. Looking south - Childs-Irving Hydroelectric Project, Childs System, Flume Tunnel No. 3, Forest Service Road 708/502, Camp Verde, Yavapai County, AZ

  7. Testing for viral penetration of non-latex surgical and examination gloves: a comparison of three methods.

    PubMed

    O'Connell, K P; El-Masri, M; Broyles, J B; Korniewicz, D M

    2004-04-01

    Currently, there are no international standards based on microbiological methodology for testing the ability of medical examination or surgical gloves to prevent the passage of viruses. Three protocols for the direct examination of the viral barrier properties of non-latex gloves were compared with 1080 gloves (270 gloves from each of two surgical brands and two medical examination brands). In two of the methods, gloves were filled with and suspended in a nutrient broth solution, and bacteriophage phiX174 was placed either inside or outside the glove, while the entire test vessel was agitated. Gloves tested using the third method were filled with a suspension of bacteriophage and allowed to rest in a vessel containing nutrient broth. Gloves were tested directly from the manufacturer's packaging, or after being punctured intentionally or subjected to a stress protocol. The passage of bacteriophage was detected with plaque assays. Significant differences in failure rates between glove brands were apparent only among gloves that had been subjected to the stress protocol. Overall, the two methods in which bacteriophage were placed inside the gloves provided more sensitivity than the method in which bacteriophage was spiked into broth outside the gloves. Thus the placement of bacteriophage inside test gloves (or the use of pressure across the glove barrier during testing), and the use of a standardised stress protocol, will improve significantly the ability of a glove test protocol to determine the relative quality of the barrier offered by medical examination and surgical gloves. Further research is needed to provide test methods that can incorporate reproducibly both the use of bacteriophage and simulated glove use in an industrial quality control setting.

  8. Bacterial contamination of surgeons gloves during shunt insertion: a pilot study.

    PubMed

    Sørensen, P; Ejlertsen, T; Aaen, D; Poulsen, K

    2008-10-01

    Bacterial infection is a major cause of shunt dysfunction. It is well-known that the majority of pathogenic micro-organisms are low-virulent bacteria normally found on intact skin. Probably shunts become contaminated during surgery either by contact to the patient skin, or contact from contaminated gloves or instruments. This study was performed to find out to what extent gloves become contaminated during shunt surgery. Gloves used during shunt implantation were examined in 10 operations. Shunt implantation was done using recommended precautions to avoid infection, including prophylactic antibiotics and double gloving, by surgeons experienced in shunt surgery. Surgical incision, dissection and tunnelling were done. Then the surgeon, the scrub-nurse and, in three cases, the assistant made an imprint of their outer gloves on agar plates. Hereafter, they changed the outer pair of gloves before handling the shunt and completing the operation. The plates were cultured for 6 days in both aerobic and anaerobic environment. In all cases the surgeons gloves were contaminated, and in six cases also the nurses' gloves were contaminated, as well as all three assistants. Propionebacterium acnes were cultured from gloves in all 10 operations and coagulase-negative Staphylococci were found in eight operations. These results are preliminary, but nevertheless they are alarming. Despite the use of recommended precautions to avoid infections we found that a substantial numbers of gloves from surgeon, scrub nurse and assistant were contaminated with micro-organisms less than 15 min after surgery has been commenced and before the shunts were handled. This study offers a feasible, simple and logical explanation of how shunts may become contaminated and infected. A simple measure would be to change the outer pairs of gloves before handling of the shunt material during surgery, as was done in this study, where non-shunt infections were observed.

  9. Measuring and Modeling Twilight’s Purple Light

    DTIC Science & Technology

    2003-01-20

    since the Krakatoa volcano’s explosion in Au- gust 1883, major volcanic eruptions have been fol- lowed by reports worldwide of extraordinarily vivid...purple light. Naturally, volcanic purple lights occurred long before the Krakatoa eruption, and scattered ac- counts of these date from at least the...early 16th century.1 After the Krakatoa event, 19th-century scientists quite reasonably speculated that the eruption in- jected dust into the upper

  10. Electrooptical measurements on purple membrane containing bacteriorhodopsin mutants.

    PubMed

    Mostafa, H I; Váró, G; Tóth-Boconádi, R; Dér, A; Keszthelyi, L

    1996-01-01

    Electrooptical measurements on purple membrane containing the wild-type and 10 different bacteriorhodopsin mutants have shown that the direction of the permanent electric dipole moment of all these membranes reverses at different pH values in the range 3.2-6.4. The induced dipole moment and the retinal angle exhibit an increased value at these pHs. The results demonstrate that the bacteriorhodopsin protein makes an important contribution to the electrooptical properties of the purple membrane.

  11. Suicidal Smothering by Rubber Latex Gloves and Handkerchief.

    PubMed

    Viero, Alessia; Cecchetto, Giovanni; Boscolo-Berto, Rafael; Viel, Guido; Montisci, Massimo

    2016-01-01

    Asphyxial deaths are common in forensic practice, being sustained by a variety of mechanisms that cause an oxygen deficiency to the brain. Several classification models have been proposed in the literature, the most recent one being that of the International Network for Forensic Research Group (INFOR). This report describes an unusual case of suffocation where the obstruction of the airways was caused by a gag formed of three latex gloves and a handkerchief. The manner of death (differential diagnosis between homicide and suicide) and the different alternatives of classification are discussed.

  12. COMPUTER MODEL AND SIMULATION OF A GLOVE BOX PROCESS

    SciTech Connect

    C. FOSTER; ET AL

    2001-01-01

    The development of facilities to deal with the disposition of nuclear materials at an acceptable level of Occupational Radiation Exposure (ORE) is a significant issue facing the nuclear community. One solution is to minimize the worker's exposure though the use of automated systems. However, the adoption of automated systems for these tasks is hampered by the challenging requirements that these systems must meet in order to be cost effective solutions in the hazardous nuclear materials processing environment. Retrofitting current glove box technologies with automation systems represents potential near-term technology that can be applied to reduce worker ORE associated with work in nuclear materials processing facilities. Successful deployment of automation systems for these applications requires the development of testing and deployment strategies to ensure the highest level of safety and effectiveness. Historically, safety tests are conducted with glove box mock-ups around the finished design. This late detection of problems leads to expensive redesigns and costly deployment delays. With wide spread availability of computers and cost effective simulation software it is possible to discover and fix problems early in the design stages. Computer simulators can easily create a complete model of the system allowing a safe medium for testing potential failures and design shortcomings. The majority of design specification is now done on computer and moving that information to a model is relatively straightforward. With a complete model and results from a Failure Mode Effect Analysis (FMEA), redesigns can be worked early. Additional issues such as user accessibility, component replacement, and alignment problems can be tackled early in the virtual environment provided by computer simulation. In this case, a commercial simulation package is used to simulate a lathe process operation at the Los Alamos National Laboratory (LANL). The Lathe process operation is indicative of

  13. Use of Magnetorheological fluid in a force feedback glove.

    PubMed

    Winter, Scott H; Bouzit, Mourad

    2007-03-01

    Magnetorheological fluid (MRF) is a smart material that has the property of changing its viscosity when exposed to a magnetic field. By placing this fluid into a sealed cylinder with an electromagnet piston as a core, a controllable resistance motion dampener can be created. A novel exoskeleton mechanical power transmission system was designed, utilizing rapid prototype parts, to transmit these resistive forces to the user's fingertips. A first iteration force feedback glove was developed and tested on human subjects for overall usability. The eventual goal of the system is to provide an alternative force producing system for exercises and rehabilitation. The entire system is lightweight, low power, and easily portable.

  14. Low-impact plutonium glove box D&D

    SciTech Connect

    Rose, R.W.

    1997-01-01

    A dilemma often encountered in decontamination and decommissioning operations is the lack of choice of the location where the work is to be performed. High-priority research activities,which cannot be interrupted may be occurring in adjacent nonradiological facilities in the immediate vicinity. Determining project boundaries and ensuring that adjacent occupants are included in the planning/scheduling of specific operations that have an impact on the work area are important for the development of the safety envelope. This describes management of such a situation with recent D & D of 61 glove boxes contaminated with plutonium and other transuranic nuclides at the Argonne National Laboratory.

  15. Toluene diisocyanate exposure in a glove manufacturing plant.

    PubMed

    Siribaddana, S H; Wijesundera, A; Fernando, R

    1998-01-01

    An accidental exposure due to reuse of containers of toluene diisocyanate to transport nontoxic substances and subsequent occupational toxic exposure caused illness among forty workers in a glove manufacturing plant. Examination and investigation of the patients and factory site inspection were carried out. Toluene diisocyanate-contaminated latex was examined by the infrared spectroscopy. Thirty-two of forty patients had muscle pain and seven had elevated creatine phosphokinase activity. These features have not been reported previously as components of toluene diisocyanate toxicity and their underlying causation remains speculative.

  16. Surgical glove perforation among nurses in ophthalmic surgery: a case-control study.

    PubMed

    Shek, Karen Mei-Yan; Chau, Janita Pak-Chun

    2014-04-01

    Many of the ophthalmic surgical instruments are extremely fine and sharp. Due to the dim light environment required for ophthalmic surgical procedures, the passing of sharp instruments among surgeons and scrub nurses also poses a risk for glove perforations. A case-control study was performed to determine the number and site of perforations in the surgical gloves used by a group of scrub nurses during ophthalmic surgery. All six nurses working in an eye and refractive surgery centre in Hong Kong participated in the study. A total of 100 (50 pairs) used surgical gloves were collected following 50 ophthalmic surgeries. Fifty pairs of new surgical gloves were also collected. Every collected surgical glove underwent the water leak test. The surgical procedure perforation rate was 8%, and none of the perforations were detected by the scrub nurses. No perforations were found in any unused gloves. The findings indicate that glove perforations for scrub nurses during ophthalmic surgery do occur and mostly go unnoticed. Future studies should continue to explore factors contributing to surgical glove perforation.

  17. Dismantling of alpha contaminated obsolete installations and glove boxes on the IRMM site in Geel (Belgium)

    SciTech Connect

    Cretskens, Pieter; Lenie, Koen; Melis, Gustaaf

    2007-07-01

    At the Institute for Reference Materials and Measurements (European commission, Joint Research Centre, IRMM) a dismantling campaign of obsolete installations and glove boxes has been carried out in 2005. There were various reasons for their removal. Some large installations did not meet modern safety standards, other installations were worn out and expected to cause a radioactive contamination risk in the future. The main goal was to create as less waste as possible by extensive contamination checks and by decontamination if necessary. For the glove boxes, decontamination was not possible. A controlled area was set up around the installation to be dismantled in order to prevent spreading of contamination from dust and dirt. This was only possible for the 'minor' contaminated installations. The dismantling campaign of the glove boxes was carried out by using tents of two types depending the contamination inside the glove boxes. The most common glove boxes were dismantled in a tent constructed with hard surfaced polycarbonate plates (ventilated cell). For glove boxes with higher contamination, the same principle was used but with a second 'glove box tent' inside (ventilated glove tent). The purpose of this project was to learn from the experience of this campaign which gave the ability to make estimates of future radioactive waste or classic waste that could be expected from dismantled installations. (authors)

  18. A new method of ergonomic testing of gloves protecting against cuts and stabs during knife use.

    PubMed

    Irzmańska, Emilia; Tokarski, Tomasz

    2017-05-01

    The paper presents a new method of ergonomic evaluation of gloves protecting against cuts and stabs during knife use, consisting of five manual dexterity tests. Two of them were selected based on the available literature and relevant safety standards, and three were developed by the authors. All of the tests were designed to simulate occupational tasks associated with meat processing as performed by the gloved hand in actual workplaces. The tests involved the three most common types of protective gloves (knitted gloves made of a coverspun yarn, metal mesh gloves, and metal mesh gloves with an ergonomic polyurethane tightener) and were conducted on a group of 20 males. The loading on the muscles of the upper limb (adductor pollicis, flexor carpi ulnaris, flexor carpi radialis, and biceps brachii) was measured using surface electromyography. For the obtained muscle activity values, correlations were found between the glove type and loading of the upper limb. ANOVA showed that the activity of all muscles differed significantly between the five tests. A relationship between glove types and electromyographic results was confirmed at a significance level of α = 0.05.

  19. Numerical simulation of pressure therapy glove by using Finite Element Method.

    PubMed

    Yu, Annie; Yick, Kit Lun; Ng, Sun Pui; Yip, Joanne; Chan, Ying Fan

    2016-02-01

    Pressure therapy garments apply pressure to suppress the growth and flatten hypertrophic scars caused by serious burns. The amount of pressure given by the pressure garments is critical to the treatment adherence and outcomes. In the present study, a biomechanical model for simulating the pressure magnitudes and distribution over hand dorsum given by a pressure glove was developed by using finite element method. In this model, the shape geometry of the hand, the mechanical properties of the glove and human body tissues were incorporated in the numerical stress analyses. The geometry of the hand was obtained by a 3D laser scanner. The material properties of two warp knitted fabrics were considered in the glove fabric model that developed from the glove production pattern with 10% size reduction in circumferential dimensions. The glove was regarded an isotropic elastic shell and the hand was assumed to be a homogeneous, isotropic and linearly elastic body. A glove wearing process was carried in the finite element analysis and the surface-to-surface contact pressure between hand and glove fabric was hence obtained. Through validation, the simulated contact pressure showed a good agreement with the experimental interface pressure measurement. The simulation model can be used to predict and visualise the pressure distribution exerted by a pressure therapy glove onto hand dorsum. It can provide information for optimising the material mechanical properties in pressure garment design and development, give a clue to understand the mechanisms of pressure action on hypertrophic scars and ultimately improve the medical functions of pressure garment.

  20. The NASA Glove: A Hands-on Design Experience for Engineering Students.

    ERIC Educational Resources Information Center

    Bradley, F. X., Jr.

    1985-01-01

    The National Aeronautics and Space Administration (NASA) and the American Society of Engineering Education (ASEE) launched a team competition to design a space glove. Discusses space glove specifications, the competition and competitors, team characteristics/membership, the judging process (with Kansas State University the winner), and lessons for…

  1. Thermal Analysis of a Metallic Wing Glove for a Mach-8 Boundary-Layer Experiment

    NASA Technical Reports Server (NTRS)

    Gong, Leslie; Richards, W. Lance

    1998-01-01

    A metallic 'glove' structure has been built and attached to the wing of the Pegasus(trademark) space booster. An experiment on the upper surface of the glove has been designed to help validate boundary-layer stability codes in a free-flight environment. Three-dimensional thermal analyses have been performed to ensure that the glove structure design would be within allowable temperature limits in the experiment test section of the upper skin of the glove. Temperature results obtained from the design-case analysis show a peak temperature at the leading edge of 490 F. For the upper surface of the glove, approximately 3 in. back from the leading edge, temperature calculations indicate transition occurs at approximately 45 sec into the flight profile. A worst-case heating analysis has also been performed to ensure that the glove structure would not have any detrimental effects on the primary objective of the Pegasus a launch. A peak temperature of 805 F has been calculated on the leading edge of the glove structure. The temperatures predicted from the design case are well within the temperature limits of the glove structure, and the worst-case heating analysis temperature results are acceptable for the mission objectives.

  2. Content of Asthmagen Natural Rubber Latex Allergens in Commercial Disposable Gloves.

    PubMed

    Bittner, C; Velasco Garrido, Marcial; Krach, L H; Harth, V

    2016-07-29

    The use of natural rubber latex (NRL) gloves in many occupations may lead to latex sensitization, allergic asthma, and skin reactions. Due to their good properties and environmental safety NRL gloves are still being used in the healthcare setting, but also in the food industry, by hairdressers, cleaners, etc. The aim of our study was to assess the protein and NRL allergen content in commercial gloves by different methods, including a new assay. Twenty commercially available NRL gloves were analyzed. Protein extraction was performed according to the international standard ASTM D-5712. Total protein content was measured with a modified Lowry method, NRL content with the CAP Inhibition Assay, the Beezhold ELISA Inhibition Assay, and an innovative ELISA with IgY-antibodies extracted from eggs of NRL-immunized hens (IgY Inhibition Assay). We found a high protein content in a range of 215.0-1304.7 μg/g in 8 out of the 20 NRL gloves. Seven of the 20 gloves were powdered, four of them with a high protein content. In gloves with high protein content, the immunological tests detected congruently high levels of NRL allergen. We conclude that a high percentage of commercially available NRL gloves still represent a risk for NRL allergy, including asthma. The modified Lowry Method allows to infer on the latex allergen content.

  3. Content of Asthmagen Natural Rubber Latex Allergens in Commercial Disposable Gloves.

    PubMed

    Bittner, C; Garrido, M V; Krach, L H; Harth, V

    The use of natural rubber latex (NRL) gloves in many occupations may lead to latex sensitization, allergic asthma, and skin reactions. Due to their good properties and environmental safety NRL gloves are still being used in the healthcare setting, but also in the food industry, by hairdressers, cleaners, etc. The aim of our study was to assess the protein and NRL allergen content in commercial gloves by different methods, including a new assay. Twenty commercially available NRL gloves were analyzed. Protein extraction was performed according to the international standard ASTM D-5712. Total protein content was measured with a modified Lowry method, NRL content with the CAP Inhibition Assay, the Beezhold ELISA Inhibition Assay, and an innovative ELISA with IgY-antibodies extracted from eggs of NRL-immunized hens (IgY Inhibition Assay). We found a high protein content in a range of 215.0-1304.7 μg/g in 8 out of the 20 NRL gloves. Seven of the 20 gloves were powdered, four of them with a high protein content. In gloves with high protein content, the immunological tests detected congruently high levels of NRL allergen. We conclude that a high percentage of commercially available NRL gloves still represent a risk for NRL allergy, including asthma. The modified Lowry Method allows to infer on the latex allergen content.

  4. Safety in the Chemical Laboratory: Selecting Chemical Protective Gloves Properly in the Lab.

    ERIC Educational Resources Information Center

    Hart, Charles

    1989-01-01

    Discusses the selection of gloves for the chemistry laboratory. Provides checklists for the purposes of the gloves, and the factors including permeation rate, breakthrough time, friction, and cost. Lists eight rules for preventing skin exposure and minimizing area contamination. Lists six references. (YP)

  5. The influence of dental gloves on the setting of impression materials.

    PubMed

    Baumann, M A

    1995-08-19

    The increased wearing of gloves during dental treatment has created new problems for general dental practitioners. One of these is the retarded set or total inhibition of addition silicones caused by natural latex gloves. This study was designed to test different gloves and impression materials in common use. Eight latex gloves, selected with different properties representing all possible types, together with four non-latex gloves, made of neoprene, styrene-butadiene, polyethylene and polyvinylchloride, were tested. As a control, mixing with bare hands and with maize starch was carried out. The viscosity changes of five types of impression materials (polyvinylsiloxanes, condensation silicones, alginates, polyether and polysulphides) were measured with a Zwick hardness tester to give the Shore A hardness. No impression materials other than polyvinylsiloxanes were affected by pure latex gloves and those only by two brands. All other impression materials can be mixed and handled with gloved hands without affecting their setting time. The retarded set of polyvinylsiloxanes caused by natural latex gloves is not so widespread as had previously been thought.

  6. The Influence of Glove Type on Simulated Wheelchair Racing Propulsion: A Pilot Study.

    PubMed

    Rice, I; Dysterheft, J; Bleakney, A W; Cooper, R A

    2016-01-01

    Our purpose was to examine the influence of glove type on kinetic and spatiotemporal parameters at the handrim in elite wheelchair racers. Elite wheelchair racers (n=9) propelled on a dynamometer in their own racing chairs with a force and moment sensing wheel attached. Racers propelled at 3 steady state speeds (5.36, 6.26 & 7.60 m/s) and performed one maximal effort sprint with 2 different glove types (soft & solid). Peak resultant force, peak torque, impulse, contact angle, braking torque, push time, velocity, and stroke frequency were recorded for steady state and sprint conditions. Multiple nonparametric Wilcoxon matched pair's tests were used to detect differences between glove types, while effect sizes were calculated based on Cohen's d. During steady state trials, racers propelled faster, using more strokes and larger contact angle, while applying less impulse with solid gloves compared to soft gloves. During the sprint condition, racers achieved greater top end velocities, applying larger peak force, with less braking torque with solid gloves compared to soft gloves. Use of solid gloves may provide some performance benefits to wheelchair racers during steady state and top end velocity conditions. © Georg Thieme Verlag KG Stuttgart · New York.

  7. The Potential of Wearable Sensor Technology for EVA Glove Ergonomic Evaluation

    NASA Technical Reports Server (NTRS)

    Reid, Christopher R.; McFarland, Shane; Norcross, Jason R.; Rajulu, Sudhakar

    2014-01-01

    Injuries to the hands are common among astronauts who train for extravehicular activity (EVA). Many of these injuries refer to the gloves worn during EVA as the root cause. While pressurized, the bladder and outer material of these gloves restrict movement and create pressure points while performing tasks, sometimes resulting in pain, muscle fatigue, abrasions, and occasionally a more severe injury, onycholysis (fingernail delamination). The most common injury causes are glove contact (pressure point/rubbing), ill-fitting gloves, and/or performing EVA tasks in pressurized gloves. A brief review of the Lifetime Surveillance of Astronaut Health's injury database reveals over 57% of the total injuries to the upper extremities during EVA training occurred either to the metacarpophalangeal (MCP) joint, fingernail, or the fingertip. Twenty-five of these injuries resulted in a diagnosis of onycholysis

  8. The Potential of Wearable Sensor Technology for EVA Glove Ergonomic Evaluation

    NASA Technical Reports Server (NTRS)

    Reid, Christopher R.; McFarland, Shane M.; Norcross, Jason R.; Rajulu, Sudhakar

    2014-01-01

    Injuries to the hands are common among astronauts who train for extravehicular activity (EVA). Many of these injuries refer to the gloves worn during EVA as the root cause. While pressurized, the bladder and outer material of these gloves restrict movement and create pressure points while performing tasks, sometimes resulting in pain, muscle fatigue, abrasions, and occasionally a more severe injury, onycholysis (fingernail delamination). The most common injury causes are glove contact (pressure point/rubbing), ill-fitting gloves, and/or performing EVA tasks in pressurized gloves. A brief review of the Lifetime Surveillance of Astronaut Health's injury database reveals over 57% of the total injuries to the upper extremities during EVA training occurred either to the metacarpophalangeal (MCP) joint, fingernail, or the fingertip. Twenty-five of these injuries resulted in a diagnosis of onycholysis.

  9. Characterization of a novel data glove based on textile integrated sensors.

    PubMed

    Tognetti, Alessandro; Carbonaro, Nicola; Zupone, Giuseppe; De Rossi, Danilo

    2006-01-01

    The present work is about the realization and the characterization of a novel data glove able to detect hand kinematic configurations. The sensing glove has been realized by directly integrate sensors in the fabric used to manufacture the glove. Main specifications for the realized device are lightness, wearability and user comfort. As a fundamental requirement to address this purpose we have estimated the employment of a material which does not substantially change the mechanical properties of the fabric and maintains the wearability of the garment. To obtain this result, we have integrated sensor networks made by conductive elastomer into an elastic fabric used to manufacture the sensing glove. Electrically conductive elastomer composites show piezoresistive properties when a deformation is applied. Conductive elastomers materials can be applied to fabric or to other flexible substrate and they can be employed as strain sensors. To validate the realized device, a function that relates glove sensor values to hand motion has been realized and tested.

  10. Comparison of mechanical properties of silicone and PVC (polyvinylchloride) cosmetic gloves for articulating hand prostheses.

    PubMed

    Smit, Gerwin; Plettenburg, Dick H

    2013-01-01

    Current articulating electric and body-powered hands have a lower pinch force (15-34 N) than electric hands with stiff fingers (55-100 N). The cosmetic glove, which covers a hand prosthesis, negatively affects the mechanical efficiency of a prosthesis. The goal of this study is to mechanically compare polyvinylchloride (PVC) and silicone cosmetic gloves and quantify the stiffness of the finger joints, the required actuation energy, and the energy dissipation during joint articulation. Six cosmetic gloves, identical in size but made from different materials, were mechanically tested: three PVC and three silicone. The silicone gloves required less work and dissipated less energy during flexing. They also had a lower joint stiffness and required a lower maximum joint torque. Based on energy requirements, joint stiffness, and required joint torque, the tested silicone glove is most suitable for application on an articulating hand prosthesis.

  11. Personal equipment for low seam coal miners: Development and testing of knit fabric gloves

    SciTech Connect

    Sanders, M.S.; Krohn, G.S.; Downing, J.V.; Shaw, B.E.

    1985-01-01

    This report discusses the development and testing of prototype gloves for underground mining work. An analysis of HSAC hand-finger injuries revealed three high-risk jobs: laborer, mechanic, and roof bolter. Laboratory tests of dexterity and protection were performed using six off-the-shelf gloves. Two prototype gloves were developed. Both were Kevlar-cotton blend knit gloves. One had polyvinyl ''Ks'' screened on the palm and fingers, and a hand pad sewn into the palm. The other prototype had the palm and fingers coated with a solid layer of polyvinyl and had no hand pad. Field tests revealed that the solid-coated gloves were preferred by workers, but that the polyvinyl melted when working with hot drill steels.

  12. Application of Spacesuit Glove Requirements Tools to Athletic and Personal Protective Equipment

    NASA Technical Reports Server (NTRS)

    England, Scott; Benson, Elizabeth; Melsoh, Miranda; Thompson, Shelby; Rajulu, Sudhakar

    2010-01-01

    Despite decades of ongoing improvement, astronauts must still struggle with inhibited dexterity and accelerated fatigue due to the requirement of wearing a pressurized Extra-Vehicular Activity (EVA) glove. Recent research in the Anthropometry and Biomechanics Facility at NASA's Johnson Space Center has focused on developing requirements for improvements in the design of the next generation of EVA glove. In the course of this research, it was decided to expand the scope of the testing to include a variety of commercially available athletic and consumer gloves to help provide a more recognizable comparison for investigators and designers to evaluate the current state of EVA glove mobility and strength. This comparison is being provided with the hope that innovative methods may help commercial development of gloves for various athletic and personal protective endeavors.

  13. Computational Analysis of the G-III Laminar Flow Glove

    NASA Technical Reports Server (NTRS)

    Malik, Mujeeb R.; Liao, Wei; Lee-Rausch, Elizabeth M.; Li, Fei; Choudhari, Meelan M.; Chang, Chau-Lyan

    2011-01-01

    Under NASA's Environmentally Responsible Aviation Project, flight experiments are planned with the primary objective of demonstrating the Discrete Roughness Elements (DRE) technology for passive laminar flow control at chord Reynolds numbers relevant to transport aircraft. In this paper, we present a preliminary computational assessment of the Gulfstream-III (G-III) aircraft wing-glove designed to attain natural laminar flow for the leading-edge sweep angle of 34.6deg. Analysis for a flight Mach number of 0.75 shows that it should be possible to achieve natural laminar flow for twice the transition Reynolds number ever achieved at this sweep angle. However, the wing-glove needs to be redesigned to effectively demonstrate passive laminar flow control using DREs. As a by-product of the computational assessment, effect of surface curvature on stationary crossflow disturbances is found to be strongly stabilizing for the current design, and it is suggested that convex surface curvature could be used as a control parameter for natural laminar flow design, provided transition occurs via stationary crossflow disturbances.

  14. Penicillin inhibitors of purple acid phosphatase.

    PubMed

    Faridoon; Hussein, Waleed M; Ul Islam, Nazar; Guddat, Luke W; Schenk, Gerhard; McGeary, Ross P

    2012-04-01

    Purple acid phosphatases (PAPs) are binuclear metallohydrolases that have a multitude of biological functions and are found in fungi, bacteria, plants and animals. In mammals, PAP activity is linked with bone resorption and over-expression can lead to bone disorders such as osteoporosis. PAP is therefore an attractive target for the development of drugs to treat this disease. A series of penicillin conjugates, in which 6-aminopenicillanic acid was acylated with aromatic acid chlorides, has been prepared and assayed against pig PAP. The binding mode of most of these conjugates is purely competitive, and some members of this class have potencies comparable to the best PAP inhibitors yet reported. The structurally related penicillin G was shown to be neither an inhibitor nor a substrate for pig PAP. Molecular modelling has been used to examine the binding modes of these compounds in the active site of the enzyme and to rationalise their activities. Crown Copyright © 2012. Published by Elsevier Ltd. All rights reserved.

  15. Using the Space Glove to Teach Spatial Thinking

    NASA Technical Reports Server (NTRS)

    Lord, Peter

    2008-01-01

    The challenge of extending students' skills in spatial thinking to astronomical scales was the central focus of our K-8 curriculum development. When the project's lead teacher requested a curriculum that cumulatively built on each prior year's learning in a spiral fashion, I knew exactly what the school was asking for. Second and third graders began by noticing the cyclical patters that the sun, moon, and stars make in the sky. Fourth graders explored the phases of the moon by taking turns modeling and sketching them in their classroom and then comparing them to the real sky. Sixth !graders used real telescopes to observe a moving model of our solar system and walked a scale model of the planets' orbits. The curriculum is designed to expand students' capacity to visualize space in a hierarchical fashion that asks them to imagine themselves from a broader number of spatial perspectives through hands-on activities. The "situational awareness" Peter's story describes is a hallmark of high-performance engineering and innovation. Keeping in mind the potential outcomes of multiple paths of pursuit from multiple perspectives while keeping track of their relative merits and performance requirements is a demanding spatial task. What made it possible for Peter to transform the failure of his first glove into triumph was the mental space in which that failure provided exactly the information needed for a new breakthrough. In at least two cases, Peter could immediately "see" the full implications of what his hands were telling him. He tells the story of how putting his hands in a Phase VI astronaut glove instantly transformed his understanding of the glove challenge. Six months into his development, the failure of circumferentially wrapped cords to produce a sufficiently flexible glove again forced him to abandon his assumptions. His situational awareness was so clear and compelling it became a gut-level response. Peter's finely developed spatial skills enabled him to almost

  16. Prospective data collection and analysis of perforations and tears of latex surgical gloves during primary endoprosthetic surgeries

    PubMed Central

    Zaatreh, Sarah; Enz, Andreas; Klinder, Annett; König, Tony; Mittelmeier, Lena; Kundt, Günther; Mittelmeier, Wolfram

    2016-01-01

    Introduction: Surgical gloves are used to prevent contamination of the patient and the hospital staff with pathogens. The aim of this study was to examine the actual effectiveness of gloves by examining the damage (perforations, tears) to latex gloves during surgery in the case of primary hip and knee prosthesis implantation. Materials and methods: Latex surgical gloves used by surgeons for primary hip and knee replacement surgeries were collected directly after the surgery and tested using the watertightness test according to ISO EN 455-1:2000. Results: 540 gloves were collected from 104 surgeries. In 32.7% of surgeries at least one glove was damaged. Of all the gloves collected, 10.9% were damaged, mainly on the index finger. The size of the perforations ranged from ≤1 mm to over 5 mm. The surgeon’s glove size was the only factor that significantly influenced the occurrence of glove damage. Surgeon training level, procedure duration, and the use of bone cement had no significant influence. Conclusions: Our results highlight the high failure rate of surgical gloves. This has acute implications for glove production, surgical practice, and hygiene guidelines. Further studies are needed to detect the surgical steps, surface structures, and instruments that pose an increased risk for glove damage. PMID:28066701

  17. Swatch Test Results of Phase 2 Commercial Chemical Protective Gloves to Challenge by Chemical Warfare Agents: Summary Report

    DTIC Science & Technology

    2001-01-01

    TEST RESULTS OF PHASE 2 COMMERCIAL CHEMICAL PROTECTIVE GLOVES TO CHALLENGE BY CHEMICAL WARFARE AGENTS : SUMMARY REPORT Robert S...Swatch testing Permeation testing GB Chemical protective gloves 15. NUMBER OF PAGES 53 16. PRICE CODE 17... warfare (CW) agent environment. Swatches of material from each glove design were tested for resistance to

  18. Protective glove use and hygiene habits modify the associations of specific pesticides with Parkinson's disease.

    PubMed

    Furlong, Melissa; Tanner, Caroline M; Goldman, Samuel M; Bhudhikanok, Grace S; Blair, Aaron; Chade, Anabel; Comyns, Kathleen; Hoppin, Jane A; Kasten, Meike; Korell, Monica; Langston, J William; Marras, Connie; Meng, Cheryl; Richards, Marie; Ross, G Webster; Umbach, David M; Sandler, Dale P; Kamel, Freya

    2015-02-01

    Pesticides have been associated with Parkinson's disease (PD), and protective gloves and workplace hygiene can reduce pesticide exposure. We assessed whether use of gloves and workplace hygiene modified associations between pesticides and PD. The Farming and Movement Evaluation (FAME) study is a nested case-control study within the Agricultural Health Study. Use of protective gloves, other PPE, and hygiene practices were determined by questionnaire (69 cases and 237 controls were included). We considered interactions of gloves and hygiene with ever-use of pesticides for all pesticides with ≥5 exposed and unexposed cases and controls in each glove-use stratum (paraquat, permethrin, rotenone, and trifluralin). 61% of respondents consistently used protective gloves and 87% consistently used ≥2 hygiene practices. Protective glove use modified the associations of paraquat and permethrin with PD: neither pesticide was associated with PD among protective glove users, while both pesticides were associated with PD among non-users (paraquat OR 3.9 [95% CI 1.3, 11.7], interaction p=0.15; permethrin OR 4.3 [95% CI 1.2, 15.6] interaction p=0.05). Rotenone was associated with PD regardless of glove use. Trifluralin was associated with PD among participants who used <2 hygiene practices (OR 5.5 [95% CI 1.1, 27.1]) but was not associated with PD among participants who used 2 or more practices (interaction p=0.02). Although sample size was limited in the FAME study, protective glove use and hygiene practices appeared to be important modifiers of the association between pesticides and PD and may reduce risk of PD associated with certain pesticides.

  19. Spacesuit Glove-Induced Hand Trauma and Analysis of Potentially Related Risk Variables

    NASA Technical Reports Server (NTRS)

    McFarland, Shane M.; Reid, Christopher R.; Norcross, Jason; Charvat, Jacqueline M.

    2015-01-01

    Injuries to the hands are common among astronauts who train for extravehicular activity (EVA). When the gloves are pressurized, they restrict movement and create pressure points during tasks, sometimes resulting in pain, muscle fatigue, abrasions, and occasionally more severe injuries such as onycholysis. Glove injuries, both anecdotal and recorded, have been reported during EVA training and flight persistently through NASA's history regardless of mission or glove model. Theories as to causation such as glove-hand fit are common but often lacking in supporting evidence. Previous statistical analysis has evaluated onycholysis in the context of crew anthropometry only (Opperman et al 2010). The purpose of this study was to analyze all injuries (as documented in the medical records) and available risk factor variables with the goal to determine engineering and operational controls that may reduce hand injuries due to the EVA glove in the future. A literature review and data mining study were conducted between 2012 and 2014. This study included 179 US NASA crew who trained or completed an EVA between 1981 and 2010 (crossing both Shuttle and ISS eras) and wore either the 4000 Series or Phase VI glove during Extravehicular Mobility Unit (EMU) spacesuit EVA training and flight. All injuries recorded in medical records were analyzed in their association to candidate risk factor variables. Those risk factor variables included demographic characteristics, hand anthropometry, glove fit characteristics, and training/EVA characteristics. Utilizing literature, medical records and anecdotal causation comments recorded in crewmember injury data, investigators were able to identify several risk factors associated with increased risk of glove related injuries. Prime among them were smaller hand anthropometry, duration of individual suited exposures, and improper glove-hand fit as calculated by the difference in the anthropometry middle finger length compared to the baseline EVA

  20. Understanding factors that influence protective glove use among automotive spray painters.

    PubMed

    Ceballos, Diana; Reeb-Whitaker, Carolyn; Glazer, Patricia; Murphy-Robinson, Helen; Yost, Michael

    2014-01-01

    Dermal contact with isocyanate-based coatings may lead to systemic respiratory sensitization. The most common isocyanates found in sprayed automotive coatings are monomeric and oligomeric 1,6-hexamethylene diisocyanate (HDI) and isophorone diisocyanate (IPDI). Most spray painters use thin (4-5 mil) latex gloves that are not effective at preventing dermal exposures when spraying isocyanate paints. Personal interviews with collision repair industry personnel and focus groups with spray painters were held to characterize risk awareness, to examine perceptions and challenges concerning protective glove use and selection, and to generate ideas for protective glove use interventions. The most popular gloves among spray painters were thin (4-5 mil) and thick (14 mil) latex. We found that medium to thick (6-8 mil) nitrile were not always perceived as comfortable and were expected to be more expensive than thin (4-5 mil) latex gloves. Of concern is the user's difficulty in distinguishing between nitrile and latex gloves; latex gloves are now sold in different colors including blue, which has traditionally been associated with nitrile gloves. Even though spray painters were familiar with the health hazards related to working with isocyanate paints, most were not always aware that dermal exposure to isocyanates could contribute to the development of occupational asthma. There is a need for more research to identify dermal materials that are protective against sprayed automotive coatings. Automotive spray painters and their employers need to be educated in the selection and use of protective gloves, specifically on attributes such as glove material, color, and thickness.

  1. Spacesuit Glove-Induced Hand Trauma and Analysis of Potentially Related Risk Variables

    NASA Technical Reports Server (NTRS)

    Charvat, Chacqueline M.; Norcross, Jason; Reid, Christopher R.; McFarland, Shane M.

    2015-01-01

    Injuries to the hands are common among astronauts who train for extravehicular activity (EVA). When the gloves are pressurized, they restrict movement and create pressure points during tasks, sometimes resulting in pain, muscle fatigue, abrasions, and occasionally more severe injuries such as onycholysis. Glove injuries, both anecdotal and recorded, have been reported during EVA training and flight persistently through NASA's history regardless of mission or glove model. Theories as to causation such as glove-hand fit are common but often lacking in supporting evidence. Previous statistical analysis has evaluated onycholysis in the context of crew anthropometry only. The purpose of this study was to analyze all injuries (as documented in the medical records) and available risk factor variables with the goal to determine engineering and operational controls that may reduce hand injuries due to the EVA glove in the future. A literature review and data mining study were conducted between 2012 and 2014. This study included 179 US NASA crew who trained or completed an EVA between 1981 and 2010 (crossing both Shuttle and ISS eras) and wore either the 4000 Series or Phase VI glove during Extravehicular Mobility Unit (EMU) spacesuit EVA training and flight. All injuries recorded in medical records were analyzed in their association to candidate risk factor variables. Those risk factor variables included demographic characteristics, hand anthropometry, glove fit characteristics, and training/EVA characteristics. Utilizing literature, medical records and anecdotal causation comments recorded in crewmember injury data, investigators were able to identify several risk factors associated with increased risk of glove related injuries. Prime among them were smaller hand anthropometry, duration of individual suited exposures, and improper glove-hand fit as calculated by the difference in the anthropometry middle finger length compared to the baseline EVA glove middle finger length.

  2. Dexterity tests data contribute to reduction in leaded glovebox gloves use

    SciTech Connect

    Cournoyer, Michael E; Lawton, Cindy M; Castro, Amanda M

    2008-01-01

    Programmatic operations at the Los Alamos National Laboratory Plutonium Facility (TA-55) involve working with various amounts of plutonium and other highly toxic, alphaemitting materials. The spread of radiological contamination on surfaces and airborne contamination and excursions of contaminants into the operator's breathing zone are prevented through the use of a variety of gloveboxes. Through an integrated approach, controls have been developed and implemented through an efficient Glovebox Glove Integrity Program (GGJP). A key element of this program is to consider measures that lower the overall risk of glovebox operations. Line management owning glovebox processes through this program make decisions on which type of glovebox gloves (the weakest component of this safety significant system) would perform in these aggressive environments. As Low As Reasonably Achievable (ALARA) considerations must be balanced with glove durability and worker dexterity, both of which affect the final overall risk of the operation. In the past, lead-loaded (leaded) glovebox gloves made from Hypalon(reg.) had been the workhorse of programmatic operations at TA-55. Replacing leaded gloves with unleaded gloves for certain operations would lower the overall risk as well as reduced the amount of mixed TRU waste. This effort contributes to Los Alamos National Laboratory Continuous Improvement Program by improving the efficiency, cost effectiveness, and formality of glovebox operations. In the following report, the pros and cons of wearing leaded glovebox gloves, the effect of leaded gloves versus unleaded gloves on task performance using standard dexterity tests, the justification for switching from leaded to unleaded gloves, and pollution prevention benefits of this dramatic change in the glovebox system are presented.

  3. Understanding Factors that Influence Protective Glove Use among Automotive Spray Painters

    PubMed Central

    Ceballos, Diana; Reeb-Whitaker, Carolyn; Glazer, Patricia; Murphy-Robinson, Helen; Yost, Michael

    2017-01-01

    Dermal contact with isocyanate-based coatings may lead to systemic respiratory sensitization. The most common isocyanates found in sprayed automotive coatings are monomeric and oligomeric 1,6-hexamethylene diisocyanate (HDI) and isophorone diisocyanate (IPDI). Most spray painters use thin (4–5 mil) latex gloves that are not effective at preventing dermal exposures when spraying isocyanate paints. Personal interviews with collision repair industry personnel and focus groups with spray painters were held to characterize risk awareness, to examine perceptions and challenges concerning protective glove use and selection, and to generate ideas for protective glove use interventions. The most popular gloves among spray painters were thin (4–5 mil) and thick (14 mil) latex. We found that medium to thick (6–8 mil) nitrile were not always perceived as comfortable and were expected to be more expensive than thin (4–5 mil) latex gloves. Of concern is the users’ difficulty to distinguish between nitrile and latex gloves; latex gloves are now sold in different colors including blue, which has traditionally been associated with nitrile gloves. Even though spray painters were familiar with the health hazards related to working with isocyanate paints; most were not always aware that dermal exposure to isocyanates could contribute to the development of occupational asthma. There is a need for more research to identify dermal materials that are protective against sprayed automotive coatings. Automotive spray painters and their employers need to be educated in the selection and use of protective gloves, specifically on attributes such as glove material, color, and thickness. PMID:24215135

  4. Natural antioxidants in purple sprouting broccoli under Mediterranean climate.

    PubMed

    Rodríguez-Hernández, María del Carmen; Moreno, Diego A; Carvajal, Micaela; García-Viguera, Cristina; Martínez-Ballesta, María del Carmen

    2012-10-01

    Broccoli, (Brassica oleracea var. Italica), is generally recognized as a nutritive food rich in natural antioxidants, including vitamins and phenolics compounds. Phytochemical composition of 3 different purple sprouting broccoli varieties according with their production cycle: EEP (Extra Early), EP (Early), and LP (Late) were determined. The 3 cultivars tested were grown under the same conditions in an experimental field (SE Spain) where they were not previously cultivated since these cultivars are typical of cold, Northern-European areas. EP variety showed greater growth according to the photosynthetic rate and C assimilation. However, it was not possible to obtain inflorescences for variety LP. The health-promoting compounds (vitamin C, phenolic compounds, and glucosinolates) were higher in purple broccolis than in traditionally grown green broccolis and showed differences according to the variety. With respect to the use of broccoli byproducts as source of antioxidants, any variety would be suitable although the leaves of EP variety seems the richest in total phenolic acids, whereas the amount of anthocyanins was higher in LP variety, followed by EP and EEP varieties. Under our experimental conditions, the levels of glucosinolates were higher in purple broccoli than in green cultivars and also higher than other purple broccolis grown under different climate conditions. Therefore, the results reported data for production of the EEP and EP varieties in the Mediterranean climate with potential to obtain vegetables with improved nutritional quality. The results of this study reported data of the health-promoting nutrients and natural antioxidants of EEP, EP, and LP purple sprouting broccoli varieties grown under the Mediterranean climate. The vitamin C, phenolic compounds, and glucosinolates in these purple varieties were higher than in traditionally grown green broccolis and other purple broccolis grown under different climate conditions. © 2012 Institute of Food

  5. Genetic and linkage analysis of purple-blue flower in soybean.

    PubMed

    Takahashi, Ryoji; Matsumura, Hisakazu; Oyoo, Maurice E; Khan, Nisar A

    2008-01-01

    Flower color of soybean is primarily controlled by genes W1, W3, W4, Wm, and Wp. In addition, the soybean gene symbol W2, w2 produces purple-blue flower in combination with W1. This study was conducted to determine the genetic control of purple-blue flower of cultivar (cv). Nezumisaya. F(1) plants derived from a cross between Nezumisaya and purple flower cv. Harosoy had purple flowers. Segregation of the F(2) plants fitted a ratio of 3 purple:1 purple-blue. F(3) lines derived from F(2) plants with purple-blue flowers were fixed for purple-blue flowers, whereas those from F(2) plants with purple flowers fitted a ratio of 1 fixed for purple flower:2 segregating for flower color. These results indicated that the flower color of Nezumisaya is controlled by a single gene whose recessive allele is responsible for purple-blue flower. Complementation analysis revealed that flower color of Nezumisaya is controlled by W2. Linkage mapping revealed that W2 is located in molecular linkage group B2. Sap obtained from banner petals of cvs. with purple flower had a pH value of 5.73-5.77, whereas that of cvs. with purple-blue flower had a value of 6.07-6.10. Our results suggested that W2 is responsible for vacuolar acidification of flower petals.

  6. Suppression of Surgeons' Bacterial Hand Flora during Surgical Procedures with a New Antimicrobial Surgical Glove

    PubMed Central

    Kramer, Axel; Ouriel, Kenneth; Suchomel, Miranda; McLaws, Mary-Louise; Rottman, Martin; Leaper, David; Assadian, Afshin

    2014-01-01

    Abstract Background: Perforations of surgical gloves are common and increase with the duration of glove wear. Skin flora, re-grown after pre-operative disinfection of the hands, may contaminate a surgical site. An antimicrobial surgical glove with chlorhexidine on its inner surface has been developed. We hypothesized that by suppressing the re-growth of skin flora during the complete course of a surgical procedure, antimicrobial gloves may reduce the risk of surgical site contamination in the event of an intra-operative glove breach. Methods: We conducted a randomized, double-blind, single-center trial, to measure any differences in the bacterial skin populations of surgeons' hands during surgical procedures done with antimicrobial and non-antimicrobial surgical gloves [ISRCTN71391952]. In this study, 25 pairs of gloves were retrieved from 14 surgeons who donned them randomly on their dominant or non-dominant hand. The number of bacteria retrieved from glove fluid was measured and expressed as colony forming units (CFU)/mL. Results: The median cfu/mL of antimicrobial gloves was 0.00 (LQ: 0.00 CFU/mL; UQ: 0.00 cfu/mL), with a mean log10 cfu/mL=0.02 (range: 0.00–0.30). The median CFU/mL of non-antimicrobial gloves was 54.00 (LQ: 3.00 cfu/mL; UQ: 100.00 cfu/mL) with a mean log10 CFU/mL=1.32 (range: 0.00–2.39). After a mean operating time of 112 min, the difference in the log10 CFU/mL was 1.30 (p<0.001). Conclusions: A new antimicrobial surgical glove suppressed surgeons' hand flora during operative procedures. In the event of a glove breach, the use of such a glove may have the potential to prevent bacterial contamination of a sterile surgical site, thereby decreasing the risk of surgical site infection (SSI) and increasing patient safety. Further clinical studies are needed to confirm this concept. PMID:24116857

  7. Use of Traditional and Novel Methods to Evaluate the Influence of an EVA Glove on Hand Performance

    NASA Technical Reports Server (NTRS)

    Benson, Elizabeth A.; England, Scott A.; Mesloh, Miranda; Thompson, Shelby; ajulu, Sudhakar

    2010-01-01

    The gloved hand is one of an astronaut s primary means of interacting with the environment, and any restrictions imposed by the glove can strongly affect performance during extravehicular activity (EVA). Glove restrictions have been the subject of study for decades, yet previous studies have generally been unsuccessful in quantifying glove mobility and tactility. Past studies have tended to focus on the dexterity, strength, and functional performance of the gloved hand; this provides only a circumspect analysis of the impact of each type of restriction on the glove s overall capability. The aim of this study was to develop novel capabilities to provide metrics for mobility and tactility that can be used to assess the performance of a glove in a way that could enable designers and engineers to improve their current designs. A series of evaluations were performed to compare unpressurized and pressurized (4.3 psi) gloved conditions with the ungloved condition. A second series of evaluations were performed with the Thermal Micrometeoroid Garment (TMG) removed. This series of tests provided interesting insight into how much of an effect the TMG has on gloved mobility - in some cases, the presence of the TMG restricted glove mobility as much as pressurization did. Previous hypotheses had assumed that the TMG would have a much lower impact on mobility, but these results suggest that an improvement in the design of the TMG could have a significant impact on glove performance. Tactility testing illustrated the effect of glove pressurization, provided insight into the design of hardware that interfaces with the glove, and highlighted areas of concern. The metrics developed in this study served to benchmark the Phase VI EVA glove and to develop requirements for the next-generation glove for the Constellation program.

  8. A Combination of Traditional and Novel Methods Used to Evaluate the Impact of an EVA Glove on Hand Performance

    NASA Technical Reports Server (NTRS)

    Rajulu, Sudhakar; Benson, Elizabeth; England, Scott; Mesloh, Miranda; Thompson, Shelby

    2009-01-01

    The gloved hand is an astronaut s primary means of interacting with the environment, so performance on an EVA is strongly impacted by any restrictions imposed by the glove. As a result, these restrictions have been the subject of study for decades. However, previous studies have generally been unsuccessful in quantifying glove mobility and tactility. Instead, studies have tended to focus on the dexterity, strength and functional performance of the gloved hand. Therefore, it has been difficult to judge the impact of each type of restriction on the glove s overall capability. The lack of basic information on glove mobility in particular, is related to the difficulty in instrumenting a gloved hand to allow an accurate evaluation. However, the current study aims at developing novel technological capabilities to provide metrics for mobility and tactility that can be used to assess the performance of a glove in a way that could enable designers and engineers to improve upon their current designs. A series of evaluations were performed in ungloved, unpressurized and pressurized (4.3 psi) conditions, to allow a comparison across pressures and to the baseline barehanded condition. In addition, a subset of the testing was also performed with the Thermal Micrometeoroid Garment (TMG) removed. This test case in particular provided some interesting insight into how much of an impact the TMG has on gloved mobility -- in some cases, as much as pressurization of the glove. Previous rule-of-thumb estimates had assumed that the TMG would have a much lower impact on mobility, while these results suggest that an improvement in the TMG could actually have a significant impact on glove performance. Similarly, tactility testing illustrated the impact of glove pressurization on tactility and provided insight on the design of interfaces to the glove. The metrics described in this paper have been used to benchmark the Phase VI EVA glove and to develop requirements for the next generation

  9. A Combination of Traditional and Novel Methods Used to Evaluate the Impact of an EVA Glove on Hand Performance

    NASA Technical Reports Server (NTRS)

    Rajulu, Sudhakar; Benson, Elizabeth; England, Scott; Mesloh, Miranda; Thompson, Shelby

    2009-01-01

    The gloved hand is an astronaut s primary means of interacting with the environment, so performance on an EVA is strongly impacted by any restrictions imposed by the glove. As a result, these restrictions have been the subject of study for decades. However, previous studies have generally been unsuccessful in quantifying glove mobility and tactility. Instead, studies have tended to focus on the dexterity, strength and functional performance of the gloved hand. Therefore, it has been difficult to judge the impact of each type of restriction on the glove s overall capability. The lack of basic information on glove mobility in particular, is related to the difficulty in instrumenting a gloved hand to allow an accurate evaluation. However, the current study aims at developing novel technological capabilities to provide metrics for mobility and tactility that can be used to assess the performance of a glove in a way that could enable designers and engineers to improve upon their current designs. A series of evaluations were performed in ungloved, unpressurized and pressurized (4.3 psi) conditions, to allow a comparison across pressures and to the baseline barehanded condition. In addition, a subset of the testing was also performed with the Thermal Micrometeoroid Garment (TMG) removed. This test case in particular provided some interesting insight into how much of an impact the TMG has on gloved mobility -- in some cases, as much as pressurization of the glove. Previous rule-of-thumb estimates had assumed that the TMG would have a much lower impact on mobility, while these results suggest that an improvement in the TMG could actually have a significant impact on glove performance. Similarly, tactility testing illustrated the impact of glove pressurization on tactility and provided insight on the design of interfaces to the glove. The metrics described in this paper have been used to benchmark the Phase VI EVA glove and to develop requirements for the next generation

  10. Tool-specific performance of vibration-reducing gloves for attenuating palm-transmitted vibrations in three orthogonal directions.

    PubMed

    Dong, Ren G; Welcome, Daniel E; Peterson, Donald R; Xu, Xueyan S; McDowell, Thomas W; Warren, Christopher; Asaki, Takafumi; Kudernatsch, Simon; Brammer, Antony

    2014-11-01

    Vibration-reducing (VR) gloves have been increasingly used to help reduce vibration exposure, but it remains unclear how effective these gloves are. The purpose of this study was to estimate tool-specific performances of VR gloves for reducing the vibrations transmitted to the palm of the hand in three orthogonal directions (3-D) in an attempt to assess glove effectiveness and aid in the appropriate selection of these gloves. Four typical VR gloves were considered in this study, two of which can be classified as anti-vibration (AV) gloves according to the current AV glove test standard. The average transmissibility spectrum of each glove in each direction was synthesized based on spectra measured in this study and other spectra collected from reported studies. More than seventy vibration spectra of various tools or machines were considered in the estimations, which were also measured in this study or collected from reported studies. The glove performance assessments were based on the percent reduction of frequency-weighted acceleration as is required in the current standard for assessing the risk of vibration exposures. The estimated tool-specific vibration reductions of the gloves indicate that the VR gloves could slightly reduce (<5%) or marginally amplify (<10%) the vibrations generated from low-frequency (<25 Hz) tools or those vibrating primarily along the axis of the tool handle. With other tools, the VR gloves could reduce palm-transmitted vibrations in the range of 5%-58%, primarily depending on the specific tool and its vibration spectra in the three directions. The two AV gloves were not more effective than the other gloves with some of the tools considered in this study. The implications of the results are discussed.

  11. THE REGENERATION OF VISUAL PURPLE IN THE LIVING ANIMAL

    PubMed Central

    Peskin, James C.

    1942-01-01

    1. The accumulation of visual purple in the retina after bleaching by light has been studied in the intact eye of the frog. The data show that duration and intensity of light adaptation, which influence the course of human dark adaptation as measured in terms of visual threshold, have a similar influence on the course of visual purple regeneration. 2. At 25°C. frogs which have been light adapted to 1700 millilamberts and then placed in the dark, show an increase in visual purple concentration which begins immediately and continues for 70 minutes until a maximum concentration is attained. The increase, although beginning at once, is slow at first, then proceeds rapidly, and finally slows up towards the end. Frogs which have been adapted to 9500 millilamberts show essentially the same phenomenon except that the initial slow period is strongly delayed so that almost no visual purple is formed in the first 10 minutes. 3. At 15°C. the initial delay in visual purple regeneration occurs following light adaptation to both 1700 and 9500 millilamberts. The delay is about 10 minutes and is slightly longer following the higher light adaptation. 4. The entire course of visual purple accumulation in the dark takes longer at the lower temperature than at the higher. The temperature coefficient for 10°C. is about 1.8. 5. In contrast to the behavior of the isolated retina which has small amounts of vitamin A and large amounts of retinene immediately after exposure to light, the intact eye has large amounts of vitamin A and little retinene after exposure to light for 10 minutes. In the intact eye during dark adaptation, the amount of vitamin A decreases markedly while retinene decreases only slightly in amount. If retinene is formed in the intact eye, the change from retinene to vitamin A must therefore occur rapidly in contrast to the slow change in the isolated retina. 6. The course of visual purple regeneration may be described by the equation for a first order autocatalyzed

  12. Anthocyanin inheritance and instability in purple basil (Ocimum basilicum L.).

    PubMed

    Phippen, W B; Simon, J E

    2000-01-01

    The instability of the purple pigments (anthocyanins) in purple basil varieties (Ocimum basilicum L.) limits their use as ornamental plants and as a potential anthocyanin source. Several self-pollinated generations of all purple plants were unsuccessful in stabilizing anthocyanin expression. In this study we investigated the inheritance and stability patterns of leaf traits using the Purple Ruffles variety. The results from the complete diallele crosses indicated anthocyanin expression in vegetative tissue is controlled by two dominant genes and ruffled leaf texture is controlled by a single recessive gene. Genes controlling leaf margin and leaf base structures were tightly linked to leaf texture. Essential oil production and oil constituents in leaves did not change as a result of the reversion in color. Color stability in cuttings was affected by the environment and the location where cuttings were taken. An accumulation of secondary metabolites (apigenin, genistein, and kaempferol) in green-reverted sectors on purple leaves was detected using reverse-phase high-performance liquid chromatography (HPLC) analysis; this suggested a potential block in the anthocyanin pathway. We hypothesize the reversion mutation is occurring in an anthocyanin regulatory gene.

  13. Report on New Capabilities for the Purple Development Environment

    SciTech Connect

    Futral, W S; Chambreau, C M; Gyllenhaal, J C; Wolfe, M E

    2006-12-12

    As part of the deliverables for the Development Environment for Purple, additional capabilities to improve the tools offerings and to address unique Purple system requirements, such as increased processor count, were expected. This report details some of the new capabilities that have been incorporated into the development environment tools for Purple. The shift on Purple to 64-bit applications (from 32-bit on White) initially broke many debugging and memory tools. Most tools were updated to support 64 bit well before Purple was delivered to LLNL, but the company that provided the popular heavy-weight 32-bit AIX memory tool, ZeroFault, was reluctant to port to 64 bit due to perceived lack of market. LLNL tried offering financial incentives to the ZeroFault developers, which were turned down, but eventually they did give vague promises to try to port to AIX 64-bit mode when they got time. The ZeroFault developers have been making intermittent and very slow progress over the last two plus years, but despite getting close, have not released a version of ZeroFault that yet meets our needs for 64-bit applications. However, given the critical need for memory tools and the uncertainty of ZeroFault development, other memory tool options were actively pursued and delivered.

  14. Allergic contact dermatitis to two antioxidants in latex gloves: 4,4'-thiobis(6-tert-butyl-meta-cresol) (Lowinox 44S36) and butylhydroxyanisole. Allergen alternatives for glove-allergic patients.

    PubMed

    Rich, P; Belozer, M L; Norris, P; Storrs, F J

    1991-01-01

    Allergic contact dermatitis developed on the hands and/or face of two patients after exposure to latex examination gloves. Both patients were patch test negative to the usual rubber allergens, but both had a positive patch test reaction to 4,4'-thiobis(6-tert-butyl-m-cresol) (Lowinox 44S36). Patient 2 was also patch test positive to butylhydroxyanisole. The patients were tested with other gloves, to find gloves that they could safely use. Glove manufacturers were queried to ascertain the occurrence of Lowinox 44S36 and butylhydroxyanisole in different brands of latex and vinyl examination gloves. A list of gloves and their associated allergens was generated and is provided to assist dermatologists in helping patients choose gloves free of specific allergens.

  15. Glove resistance to permeation by a 7.5% hydrogen peroxide sterilizing and disinfecting solution.

    PubMed

    Monticello, M V; Gaber, D J

    1999-08-01

    This study evaluated 6 types of glove materials for resistance to permeation by a 7.5% hydrogen peroxide liquid chemical germicide. Based on American Society for Testing and Materials Method F739-96, a small piece of glove material was placed in the center of a dual chamber test cell. The challenge and collection chambers of the test cell were filled with the hydrogen peroxide test chemical and the collecting medium (deionized water), respectively. Chemical permeation was determined by measuring the concentration of hydrogen peroxide in the collection medium at various time intervals. Both the polyvinylchloride and disposable latex examination gloves at 4.5 mil thickness provided less than 30 minutes of protection from hydrogen peroxide. The natural rubber latex glove at 16.5 mil lasted for 8 hours without any detectable penetration. Neoprene (15 mil) and nitrile butyl rubber (18 mil) both provided excellent protection throughout the 8-hour test period. Disposable latex examination gloves should be used for short-term exposure to hydrogen peroxide solutions. Thicker rubber latex gloves provided adequate protection and necessary dexterity for conducting intricate tasks. The level of protection depends largely on the thickness and quality of the glove material.

  16. [Study of aniline's penetration capability through rats' complete skin in vitro and normal lab gloves].

    PubMed

    Feng, Feng; He, Bai-yin; Ye, Xue-lan; Liu, Chang-qing; Xie, You-liang; Lai, Xiao-ping; Zhou, Ying-jun

    2012-09-01

    To study the permeability of intact mouse abdominal skin to aniline and the protective capability of two typical lab gloves against aniline. A Franz diffusion cell was used to perform in vitro transdermal absorption test and glove permeation test for aniline (0.102 mg/ml and 0.010 mg/ml). The permeabilities of intact mouse abdominal skin and gloves to aniline were measured by high performance liquid chromatography-diode array detection. The transdermal penetration of the two concentrations of aniline followed zero order kinetics within 12 h, exhibiting total aniline permeabilities within 24 h of 51.71% and 48.31%, respectively. The absorption liquid had an aniline concentration of at least 18 µg/L. The medical disposable latex glove could not stop the penetration of 0.010 mg/ml aniline, but the industrial natural latex glove could. The penetration of 0.102 mg/ml and 0.010 mg/ml aniline through the mouse abdominal skin follows zero order kinetics within 12 h. The medical disposable latex glove cannot stop the penetration of 0.010 mg/ml aniline, but the industrial natural latex glove can.

  17. Design and Characterization of a Soft Robotic Therapeutic Glove for Rheumatoid Arthritis.

    PubMed

    Chua, Matthew Chin Heng; Lim, Jeong Hoon; Yeow, Raye Chen Hua

    2017-07-27

    The modeling and experimentation of a pneumatic actuation system for the development of a soft robotic therapeutic glove is proposed in this article for the prevention of finger deformities in rheumatoid arthritis (RA) patients. The Rehabilitative Arthritis Glove (RA-Glove) is a soft robotic glove fitted with two internal inflatable actuators for lateral compression and massage of the fingers and their joints. Two mechanical models to predict the indentation and bending characteristics of the inflatable actuators based on their geometrical parameters will be presented and validated with experimental results. Experimental validation shows that the model was within a standard deviation of the experimental mean for input pressure range of 0 to 2 bars. Evaluation of the RA-Glove was also performed on six healthy human subjects. The stress distribution along the fingers of the subjects using the RA-Glove was also shown to be even and specific to the finger sizes. This article demonstrates the modeling of soft pneumatic actuators and highlights the potential of the RA-Glove as a therapeutic device for the prevention of arthritic deformities of the fingers.

  18. Triphenylguanidine, a new (old?) rubber accelerator detected in surgical gloves that may cause allergic contact dermatitis.

    PubMed

    Dahlin, Jakob; Bergendorff, Ola; Vindenes, Hilde K; Hindsén, Monica; Svedman, Cecilia

    2014-10-01

    Rubber accelerators are common contact allergens in healthcare personnel, owing to exposures from medical gloves. To analyse glove extracts used for patch testing for the presence of guanidine-type accelerators, and to describe the results of patch testing with triphenylguanidine (TPG) in 2 cases of contact allergy and with TPG added to the rubber series. Gas chromatography-mass spectrometry and liquid chromatography with ultraviolet detection were used for analysis of glove extracts. Patch tests were performed with guanidine accelerators detected in the extracts. TPG, an accelerator not previously reported as being present in rubber gloves, was found in the glove extracts. Patch testing with TPG showed relevant contact allergic reactions in patients with hand dermatitis caused by rubber gloves. Chemical analysis of extracts for patch testing is important in the identification of new possible allergens. In this case, a rubber accelerator previously not reported as a possible contact allergen was found in extracts of surgical gloves. © 2014 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.

  19. The effect of pressure gradient and thermolactyl control gloves in arthritic patients with swollen hands.

    PubMed

    Oosterveld, F G; Rasker, J J

    1990-06-01

    In this study the effect of pressure gradient gloves was compared with that of control gloves by eight patients with rheumatoid arthritis (RA) and diffusely and symmetrically swollen hands. In the morning at fixed times, grip strength, circumference of PIP joints and proximal phalanges, nocturnal pain and morning stiffness in the hands were measured. Significant improvement of circumference of PIP joints (P less than 0.001) and proximal phalanges (P less than 0.01) were found. On wearing the control gloves, some improvement was also found, but only the circumference of PIP joints decreased significantly (P less than 0.05). Nocturnal pain and morning stiffness diminished significantly on wearing both types of glove. Grip strength improved, but not significantly with both. No significant differences were detected between the effects of wearing the two types of glove. No correlation was found between the decreased swelling in the hands as measured by PIP joint circumference or circumference of the proximal phalanges and the decreased nocturnal pain or morning stiffness. This study provided no explanation for the beneficial effect of the gloves. It was shown that for some patients with painful and swollen hands, wearing gloves at night may give relief.

  20. Analysis of Asymmetric Aircraft Aerodynamics Due to an Experimental Wing Glove

    NASA Technical Reports Server (NTRS)

    Hartshorn, Fletcher

    2011-01-01

    Aerodynamic analysis on a business jet with a wing glove attached to one wing is presented and discussed. If a wing glove is placed over a portion of one wing, there will be asymmetries in the aircraft as well as overall changes in the forces and moments acting on the aircraft. These changes, referred to as deltas, need to be determined and quantified to make sure the wing glove does not have a drastic effect on the aircraft flight characteristics. TRANAIR, a non-linear full potential solver was used to analyze a full aircraft, with and without a glove, at a variety of flight conditions and angles of attack and sideslip. Changes in the aircraft lift, drag and side force, along with roll, pitch and yawing moment are presented. Span lift and moment distributions are also presented for a more detailed look at the effects of the glove on the aircraft. Aerodynamic flow phenomena due to the addition of the glove and its fairing are discussed. Results show that the glove used here does not present a drastic change in forces and moments on the aircraft, but an added torsional moment around the quarter-chord of the wing may be a cause for some structural concerns.

  1. Analysis of Asymmetric Aircraft Aerodynamics Due to an Experimental Wing Glove

    NASA Technical Reports Server (NTRS)

    Hartshorn, Fletcher

    2011-01-01

    Aerodynamic computational fluid dynamics analysis of a wing glove attached to one wing of a business jet is presented and discussed. A wing glove placed on only one wing will produce asymmetric aerodynamic effects that will result in overall changes in the forces and moments acting on the aircraft. These changes, referred to as deltas, need to be determined and quantified to ensure that the wing glove does not have a significant effect on the aircraft flight characteristics. TRANAIR (Calmar Research Corporation, Cato, New York), a nonlinear full potential solver, and Star-CCM+ (CD-adapco, Melville, New York), a finite volume full Reynolds-averaged Navier-Stokes computational fluid dynamics solver, are used to analyze a full aircraft with and without the glove at a variety of flight conditions, aircraft configurations, and angles of attack and sideslip. Changes in the aircraft lift, drag, and side force along with roll, pitch, and yaw are presented. Span lift and moment distributions are also presented for a more detailed look at the effects of the glove on the aircraft. Aerodynamic flow phenomena due to the addition of the glove are discussed. Results show that the glove produces only small changes in the aerodynamic forces and moments acting on the aircraft, most of which are insignificant.

  2. View of Sally May/Purple Mountain Siphon Intake. Looking southeast ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    View of Sally May/Purple Mountain Siphon Intake. Looking southeast - Childs-Irving Hydroelectric Project, Childs System, Sally May-Purple Mountain Siphon Intake, Forest Service Road 708/502, Camp Verde, Yavapai County, AZ

  3. Investigation in probability usage of electromagnetic space Gloves

    NASA Astrophysics Data System (ADS)

    Rahimi Motem, Sina

    This paper is based on investigation of different flux densities and their effective space around astronauts hands due to different possible designs. How we can transmit an electromagnetic field which is strong enough to absorb astronaut's instruments instead of old mechanisms with special rope during space walks and space adjustment missions. Estimating the needed flux density for this purpose to predict probable practical usage of this innovation is the other aspect of this study. This is the compilation of a previous paper which verified that the tubes around the phalanxes cannot be enhanced to produce such a strong field. The presented theoretical results in this report are anticipated to show the potential of this innovation for aerospace technology application. With consideration of NASA's research in developments of Gloves for future missions like Mars and the accident of loosing tool bags in space in November 2008, the important merit of this issue would be evident in this paper.

  4. Development of a test method for protective gloves against nanoparticles in conditions simulating occupational use

    NASA Astrophysics Data System (ADS)

    Dolez, Patricia; Vinches, Ludwig; Wilkinson, Kevin; Plamondon, Philippe; Vu-Khanh, Toan

    2011-07-01

    Nanoparticle manufacture and use are in full expansion. The associated risks of occupational exposure raise large concerns due to their potential toxicity. Even if they stand as a last resort in the traditional occupational Health & Safety (H&S) risk management strategy, personal protective equipment (PPE) against nanoparticles are an absolute need in the context of precautionary principle advocated by H&S organizations worldwide. However no standard test method is currently available for evaluating the efficiency of PPE against nanoparticles, in particular in the case of gloves. A project is thus underway to develop a test method for measuring nanoparticle penetration through protective gloves in conditions simulating glove-nanoparticle occupational interaction. The test setup includes an exposure and a sampling chamber separated by a circular glove sample. A system of cylinders is used to deform the sample while it is exposed to nanoparticles. The whole system is enclosed in a glove box to ensure the operator safety during assembly, dismounting and clean-up operations as well as during the tests. Appropriate nanoparticle detection techniques were also identified. Results are reported here for commercial 15nm TiO2 nanoparticles - powder and colloidal solutions in 1,2-propanediol, ethylene glycol and water - and four types of protective gloves: disposable nitrile and latex as well as unsupported neoprene and butyl rubber gloves. They show that mechanical deformations and contact with colloidal solution liquid carriers may affect glove materials. Preliminary results obtained with TiO2 powder indicate a possible penetration of nanoparticles through gloves following mechanical deformations.

  5. In-Situ Leak Testing And Replacement Of Glovebox Isolator, Or Containment Unit Gloves

    DOEpatents

    Castro, Julio M.; Macdonald, John M.; Steckle, Jr., Warren P.

    2004-11-02

    A test plug for in-situ testing a glove installed in a glovebox is provided that uses a top plate and a base plate, and a diametrically expandable sealing mechanism fitting between the two plates. The sealing mechanism engages the base plate to diametrically expand when the variable distance between the top plate and the bottom plate is reduced. An inlet valve included on the top plate is used to introducing a pressurized gas to the interior of the glove, and a pressure gauge located on the top plate is used to monitor the interior glove pressure.

  6. Scientific basis for selection of emergency medical examination gloves for emergency medical technicians, paramedics, firefighters, and emergency department personnel.

    PubMed

    Edlich, Richard F; Taylor, Catherine C; Winters, Kathryne; Martin, Marcus L; Anima, Gloria; Long, William B; Werner, Charles L; Perches, Colette R

    2004-01-01

    Dusting powders were first applied to gloves to facilitate donning. After 1980, manufacturers devised innovative techniques to manufacture gloves without dusting powders. It has been well documented that the powders on gloves present a health hazard to patients, as well as healthcare workers. First, these powders elicit tissue toxicity in every tissue in the body. Second, these powders serve as carriers of latex allergen and may precipitate a life-threatening allergic reaction in sensitized patients. These well-documented hazards of glove powders have caused a growing number of emergency medical technicians, paramedics, firelighters, and hospitals to abandon the use of powdered emergency medical examination gloves, using only powder-free gloves. Powder-free latex as well as non-latex gloves are now available to emergency medical technicians, paramedics, firefighters, and emergency department personnel. The use of powder-free natural rubber latex-free gloves is especially important to emergency medical technicians, paramedics, firefighters, as well as emergency department personnel to avoid eliciting an allergic reaction in the latex sensitized patient. The majority of our emergency medical technicians, paramedics and firefighters are now wearing powder-free emergency medical examination gloves that comply with the stringent Codes and Standards established by the National Fire Protection Association (NFPA), while very few hospital emergency department personnel have been provided with NFPA approved gloves. It is the purpose of this report to review the stringent regulations for emergency medical examination gloves that are outlined by the NFPA. This design and performance Standard was devised by the NFPA to address protective clothing for emergency medical operations. The design and performance requirement of the emergency medical examination gloves were described in the NFPA 1999, Standard on Protective Clothing for Emergency Medical Operations, 1997 Edition. In

  7. Dye-sensitized solar cells based on purple corn sensitizers

    NASA Astrophysics Data System (ADS)

    Phinjaturus, Kawin; Maiaugree, Wasan; Suriharn, Bhalang; Pimanpaeng, Samuk; Amornkitbamrung, Vittaya; Swatsitang, Ekaphan

    2016-09-01

    Natural dye extracted from husk, cob and silk of purple corn, were used for the first time as photosensitizers in dye sensitized solar cells (DSSCs). The dye sensitized solar cells fabrication process has been optimized in terms of solvent extraction. The resulting maximal efficiency of 1.06% was obtained from purple corn husk extracted by acetone. The ultraviolet-visible (UV-vis) spectroscopy, Fourier transform infrared spectroscopy (FTIR), electrochemical impedance spectroscopy (EIS) and incident photon-to-current efficiency (IPCE) were employed to characterize the natural dye and the DSSCs.

  8. Analysis of Low-Speed Stall Aerodynamics of a Swept Wing with Laminar-Flow Glove

    NASA Technical Reports Server (NTRS)

    Bui, Trong

    2013-01-01

    This is the presentation related to the paper of the same name describing Reynolds Averaged Navier Stokes (RANS) computational Fluid Dynamics (CFD) analysis of low speed stall aerodynamics of a swept wing with a laminar flow wing glove.

  9. Transfer efficiency of Staphylococcus aureus between nitrile exam gloves and nonporous fomites.

    PubMed

    Koenig, David W; Korir-Morrison, Cindy; Hoffman, Douglas R

    2016-02-01

    This report describes fomite transmission of Staphylococcus aureus amongst various surfaces. A contact transfer protocol was completed to evaluate the movement of S aureus between a person wearing nitrile gloves and either: handshaking with another person with gloved hands, touching a plastic cellular telephone back, or touching a stainless steel rod. The data in this preliminary study imply that the highest bacterial transfer is with metal surfaces followed by plastic. Interestingly, glove-to-glove transfer occurred but transfered less bacteria than a plastic or metal surface. The observations from this study point to the need to clearly define hygiene behaviors to reduce the potential of hand- and surface-mediated transmission. Copyright © 2016 Association for Professionals in Infection Control and Epidemiology, Inc. Published by Elsevier Inc. All rights reserved.

  10. Determining Nuclear Fingerprints: Glove Boxes, Radiation Protection, and the International Atomic Energy Agency.

    PubMed

    Rentetzi, Maria

    2017-03-15

    In a nuclear laboratory, a glove box is a windowed, sealed container equipped with two flexible gloves that allow the user to manipulate nuclear materials from the outside in an ostensibly safe environment. As a routine laboratory device, it invites neglect from historians and storytellers of science. Yet, since especially the Gulf War, glove boxes have put the interdependence of science, diplomacy, and politics into clear relief. Standing at the intersection of history of science and international history, technological materials and devices such as the glove box can provide penetrating insight into the role of international diplomatic organizations to the global circulation and control of scientific knowledge. The focus here is on the International Atomic Energy Agency.

  11. Chemical-defense flight-glove ensemble evaluation. Final report, June 1986-February 1987

    SciTech Connect

    Ross, J.; Ervin, C.

    1987-06-01

    Four chemical-defense flight-glove ensembles were evaluated for their effect on manual dexterity. Two- and three-layer combinations included in the study were: cotton liner/7-mil butyl/Nomex; cotton liner/12.5-mil epichlorohydron butyl/Nomex; Nomex/7-mil butyl (no liner); and, Nomex/12.5-mil epichlorohydron butyl (no liner). Fifteen male and 15 female subjects performed five dexterity tests bare-handed and while wearing each of the glove ensembles. Results indicated that, as expected, all gloved conditions produced significantly poorer performances that did the bare-handed condition, and two-layer combinations resulted in consistently better performances that did the three-layer combinations. Although subjects' performance were least impaired by the Nomex/butyl 7 combination, the butyl 7 gloves tended to tear. For this reason, the two-layer combinations of Nomex/epichlorohydron butyl 12.5 appears to be the most practical ensemble.

  12. 76 FR 6683 - Information Related to Risks and Benefits of Powdered Gloves; Request for Comments

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-02-07

    ..., 2003. 2. Malinger, G., S. Ginath, L. Zeidel, et al., ``Starch Peritonitis Outbreak After Introduction of a New Brand of Starch Powdered Latex Gloves,'' Acta Obstetricia et Gynecologica Scandinavica,...

  13. A Magnetic Resonance Compatible Soft Wearable Robotic Glove for Hand Rehabilitation and Brain Imaging.

    PubMed

    Yap, Hong Kai; Kamaldin, Nazir; Lim, Jeong Hoon; Nasrallah, Fatima; Goh, James Ch; Yeow, Chen-Hua

    2016-08-25

    In this paper, we present the design, fabrication and evaluation of a soft wearable robotic glove, which can be used with functional Magnetic Resonance imaging (fMRI) during the hand rehabilitation and task specific training. The soft wearable robotic glove, called MR-Glove, consists of two major components: a) a set of soft pneumatic actuators and b) a glove. The soft pneumatic actuators, which are made of silicone elastomers, generate bending motion and actuate finger joints upon pressurization. The device is MR-compatible as it contains no ferromagnetic materials and operates pneumatically. Our results show that the device did not cause artifacts to fMRI images during hand rehabilitation and task-specific exercises. This study demonstrated the possibility of using fMRI and MR-compatible soft wearable robotic device to study brain activities and motor performances during hand rehabilitation, and to unravel the functional effects of rehabilitation robotics on brain stimulation.

  14. Pollution prevention benefits of non-hazardous shielding glovebox gloves - 11000

    SciTech Connect

    Cournoyer, Michael E; Dodge, Robert L

    2011-01-11

    Radiation shielding is commonly used to protect the glovebox worker from unintentional direct and secondary radiation exposure, while working with plutonium-238 and plutonium-239. Shielding glovebox gloves are traditionally composed of lead-based materials, i.e., hazardous waste. This has prompted the development of new, non-hazardous shielding glovebox gloves. No studies, however, have investigated the pollution prevention benefits of these new glovebox gloves. We examined both leaded and non-hazardous shielding glovebox gloves. The nonhazardous substitutes are higher in cost, but this is offset by eliminating the costs associated with onsite waste handling of Resource Conservation and Recovery Act (RCRA) items. In the end, replacing lead with non-hazardous substitutes eliminates waste generation and future liability.

  15. Test of the Fishbein and Ajzen models as predictors of health care workers' glove use.

    PubMed

    Levin, P F

    1999-08-01

    The aim of this study was to identify predictors of health care workers' glove use when there is a potential for blood exposure. The study hypothesis was that an extension of the theory of planned behavior would explain more of the variance in glove use behavior than the theory of reasoned action or theory of planned behavior. A random sample of nurses and laboratory workers (N = 527) completed a 26-item questionnaire with acceptable content validity and reliability estimates. Using structural equation modeling techniques, intention, attitude, and perceived risk were significant predictors of behavior. Perceived control and attitude were the significant determinants of intention. The theory of reasoned action was the most parsimonious model, explaining 70% of the variance in glove use behavior. The theory of planned behavior extension was a viable model to study behavior related to glove use and reducing workers' risks to bloodborne diseases.

  16. Glove and mitten protection in extreme cold weather: an Antarctic study.

    PubMed

    Iserson, Kenneth V

    2016-01-01

    Background Myths, misconceptions and a general lack of information surround the use of gloves and mittens in extreme cold environments. Objective This study assessed how well an assortment of gloves and mittens performed in a very cold environment. Methods A convenience sample of gloves and mittens were tested in Antarctica during the winter of 2016 using a calibrated thermometer (range: -148°F to +158°F/-100°C to +70°C) three times over a 0.5-mile distance (~20 minutes). A small sensor on a 10-foot-long cable was taped to the radial surface of the distal small finger on the non-dominant hand. The tested clothing was donned over the probe, the maximum temperature inside the glove/mitten was established near a building exit (ambient temperature approximately 54°F/12°C), and the building was exited, initiating the test. The hand was kept immobile during the test. Some non-heated gloves were tested with chemical heat warmers placed over the volar or dorsal wrist. Results The highest starting (96°F/36°C) and ending (82°F/28°C) temperatures were with electrically heated gloves. The lowest starting temperature was with electrically heated gloves with the power off (63°F/17°C). Non-heated gloves with an inserted chemical hand warmer had the lowest minimum temperature (33°F/1°C). Maximum temperatures for gloves/mittens did not correlate well with their minimum temperature. Conclusions Coverings that maintained finger temperatures within a comfortable and safe range (at or above 59°F/15°C) included the heated gloves and mittens (including some with the power off) and mittens with liners. Mittens without liners (shell) generally performed better than unheated gloves. Better results generally paralleled the item's cost. Inserting chemical heat warmers at the wrist increased heat loss, possibly through the exposed area around the warmer.

  17. Glove and mitten protection in extreme cold weather: an Antarctic study

    PubMed Central

    Iserson, Kenneth V.

    2016-01-01

    Background Myths, misconceptions and a general lack of information surround the use of gloves and mittens in extreme cold environments. Objective This study assessed how well an assortment of gloves and mittens performed in a very cold environment. Methods A convenience sample of gloves and mittens were tested in Antarctica during the winter of 2016 using a calibrated thermometer (range: −148°F to +158°F/−100°C to +70°C) three times over a 0.5-mile distance (~20 minutes). A small sensor on a 10-foot-long cable was taped to the radial surface of the distal small finger on the non-dominant hand. The tested clothing was donned over the probe, the maximum temperature inside the glove/mitten was established near a building exit (ambient temperature approximately 54°F/12°C), and the building was exited, initiating the test. The hand was kept immobile during the test. Some non-heated gloves were tested with chemical heat warmers placed over the volar or dorsal wrist. Results The highest starting (96°F/36°C) and ending (82°F/28°C) temperatures were with electrically heated gloves. The lowest starting temperature was with electrically heated gloves with the power off (63°F/17°C). Non-heated gloves with an inserted chemical hand warmer had the lowest minimum temperature (33°F/1°C). Maximum temperatures for gloves/mittens did not correlate well with their minimum temperature. Conclusions Coverings that maintained finger temperatures within a comfortable and safe range (at or above 59°F/15°C) included the heated gloves and mittens (including some with the power off) and mittens with liners. Mittens without liners (shell) generally performed better than unheated gloves. Better results generally paralleled the item's cost. Inserting chemical heat warmers at the wrist increased heat loss, possibly through the exposed area around the warmer. PMID:27836019

  18. Detection and toxicity assessment of nitrosamines migration from latex gloves in the Chinese market.

    PubMed

    Feng, Di; Wang, Huiping; Cheng, Xuelian; Wang, Jiedong; Ning, Lifeng; Zhou, Qingfeng; Zhou, Yue; Yang, Quanli

    2009-09-01

    Nitrosamines are potent carcinogens and have been found in latex products. In 2007, twenty-seven natural latex gloves including sterile gloves, examination gloves and household use gloves were sampled from the Chinese market. This study monitored the migration of nitrosamines and nitrosatable substance from these gloves, and evaluated their mutagenicity using a Salmonella typhimurium mutation assay (Ames assay) with the strains TA98, TA97, TA100 and TA102 and by a micronucleus test (MN test) using ICR mice. In addition, the cytotoxicity of these compounds was determined by a MTT assay. N-nitrosodimethylamine (NDMA), N-nitrosodiethylamine (NDEA) and N-nitrosodibutylamine (NDBA) were all found in samples treated with artificial sweat for 4h at 37 degrees C, and total nitrosamines varied from 18.89 to 244.51microg/Kg. The nitrosamine mixture of NDMA, NDEA and NDBA was used in both the Ames assay and the MN test. The proportion of NDMA, NDEA and NDBA (1:10:20) was selected according to the proportion of nitrosamines migration from sample E05. In the Ames assay, the lowest dose (1.98 x 10(-3)microg per plate) produced a positive result in the TA98 strain, corresponding to nitrosamines migration from sample E05 of 0.016g (the total nitrosamines migration from glove E05 was 122.55 microg/kg). The TA100 strain responded positively at a dose of 4.96 x 10(-2)microg per plate, corresponding to nitrosamines migration from glove E05 of 0.040g. The MN test showed nitrosamine migration of 3.04 mg from 2066 pairs of sample E05 and could induce micronuclei in one mouse weighing 28g (average weight of one E05 glove was 6g). Extracts from gloves were found to be cytotoxic and there was a significant correlation between cytotoxicity (IC50) and the release level of nitrosamines. In conclusion, in view of the high content of nitrosamines in latex gloves and the potential toxicity of nitrosamines migration from these gloves, it is suggested that both an effective and feasible detection

  19. Next Generation Life Support (NGLS): High Performance EVA Glove (HPEG) Technology Development Element

    NASA Technical Reports Server (NTRS)

    Walsh, Sarah; Barta, Daniel; Stephan, Ryan; Gaddis, Stephen

    2015-01-01

    The overall objective is to develop advanced gloves for extra vehicular activity (EVA) for future human space exploration missions and generate corresponding standards by which progress may be quantitatively assessed. The glove prototypes that result from the successful completion of this technology development activity will be delivered to NASA's Human Exploration Operations Mission Directorate (HEOMD) and ultimately to be included in an integrated test with the next generation spacesuit currently under development.

  20. Tactility as a function of grasp force: Effects of glove, orientation, pressure, load, and handle

    NASA Technical Reports Server (NTRS)

    Bishu, Ram R.; Bronkema, Lisa A.; Garcia, Dishayne; Klute, Glenn; Rajulu, Sudhakar

    1994-01-01

    One of the reasons for reduction in performance when gloves are donned is the lack of tactile sensitivity. It was argued that grasping force for a weight to be grasped will be a function of the weight to be lifted and the hand conditions. It was further reasoned that the differences in grasping force for various hand conditions will be a correlate of the tactile sensitivity of the corresponding hand conditions. The objective of this experiment, therefore, was to determine the effects of glove type, pressure, and weight of load on the initial grasping force and stable grasping force. It was hypothesized that when a person grasps an object, he/she grasps very firmly initially and then releases the grasp slightly after realizing what force is needed to maintain a steady grasp. This would seem to be particularly true when a person is wearing a glove and has lost some tactile sensitivity and force feedback during the grasp. Therefore, the ratio of initial force and stable force and the stable force itself would represent the amount of tactile adjustment that is made when picking up an object, and this adjustment should vary with the use of gloves. A dynamometer was fabricated to measure the grasping force; the tests were performed inside a glove box. Four female and four male subjects participated in the study, which measured the effects of four variables: load effect, gender effect, glove type, and pressure variance. The only significant effects on the peak and stable force were caused by gender and the weight of the load lifted. Neither gloves nor pressure altered these forces when compared to a bare-handed condition, as was suspected before the test. It is possible that gloves facilitate in holding due to coefficient of friction while they deter in peak grasp strength.

  1. Transmission of MRSA to Healthcare Personnel Gowns and Gloves during Care of Nursing Home Residents

    PubMed Central

    Roghmann, Mary-Claire; Johnson, J. Kristie; Sorkin, John D.; Langenberg, Patricia; Lydecker, Alison; Sorace, Brian; Levy, Lauren; Mody, Lona

    2016-01-01

    Objective To estimate the frequency of MRSA transmission to gowns and gloves worn by healthcare personnel (HCP) interacting with nursing home residents in order to inform infection prevention policies in this setting Design Observational study Setting and Participants Residents and HCP from 13 community-based nursing homes in Maryland and Michigan Methods Residents were cultured for MRSA at the anterior nares and perianal or perineal skin. HCP wore gowns and gloves during usual care activities. At the end of each activity, a research coordinator swabbed the HCP’s gown and gloves. Results 403 residents were enrolled; 113 were MRSA colonized. Glove contamination was higher than gown contamination (24% vs. 14% of 954 interactions, p<0.01). Transmission varied greatly by type of care from 0% to 24% for gowns and 8% to 37% for gloves. We identified high risk activities (OR >1.0, p< 0.05) including: dressing, transferring, providing hygiene, changing linens and toileting the resident. We identified low risk activities (OR <1.0, p< 0.05) including: giving medications and performing glucose monitoring. Residents with chronic skin breakdown had significantly higher rates of gown and glove contamination. Conclusions MRSA transmission from MRSA positive residents to HCP gown and gloves is substantial with high contact activities of daily living conferring the highest risk. These activities do not involve overt contact with body fluids, skin breakdown or mucous membranes suggesting the need to modify current standards of care involving the use of gowns and gloves in this setting. PMID:26008727

  2. Citizen's Petition to Food and Drug Administration to ban cornstarch powder on medical gloves: Maltese cross birefringence.

    PubMed

    Edlich, Richard F; Long, William B; Gubler, K Dean; Rodeheaver, George T; Thacker, John G; Borel, Lise; Chase, Margot E; Cross, Catherine L; Fisher, Allyson L; Lin, Kant Y; Cox, Mary J; Zura, Robert B

    2009-02-01

    During the last 25 years, scientific experimental and clinical studies have documented the dangers of cornstarch powder on examination and surgical gloves because the cornstarch promotes wound infection, causes serious peritoneal adhesions and granulomatous peritonitis, and is a well-documented vector of the latex allergy epidemic in the world. Realizing the dangers of cornstarch on examination and surgical gloves, Germany's regulations of personal protective equipment banned the use of surgical glove powder cornstarch in 1997. In 2000, the Purchasing and Supply agency for the United Kingdom ceased to purchase any gloves lubricated with cornstarch. Realizing the dangers of cornstarch-powdered gloves, many hospitals and clinics in the United States have banned the use of cornstarch-powdered examination and surgical gloves. Hospitals that have banned cornstarch in their examination and surgical gloves have noted a marked reduction in the latex allergy epidemic in their facilities. Realizing the dangers of cornstarch-powdered examination and surgical gloves, Dr Sheila A. Murphey, branch chief, Infection Control Devices Branch, Division of Anesthesiology, General Hospital, Infection Control, and Dental Devices Office of Device Evaluation, Center for Devices and Radiological Health of the Food and Drug Administration (FDA), recommended that a Citizen's Petition be filed to the FDA to ban cornstarch on surgical and examination gloves. The 12 authors of this report have attached the enclosed petition to the FDA to ban the use of cornstarch on all synthetic and latex examination and surgical gloves used in the United States.

  3. Alice Walker's Politics or the Politics of "The Color Purple."

    ERIC Educational Resources Information Center

    Hamilton, Cynthia

    1988-01-01

    Alice Walker's "The Color Purple" portrays Black women's oppression as the result of patriarchy, and proposes the acceptance of middle-class values--home ownership and entrepreneurship--as the solution to exploitation. She relies on stereotypes to characterize Black men and women, and depicts an ideology of submission. (BJV)

  4. New anthocyanins from purple pods of pea (Pisum spp.).

    PubMed

    Terahara, N; Honda, T; Hayashi, M; Ishimaru, K

    2000-12-01

    Two new anthocyanins were isolated from purple pods of pea (Pisum spp.). Their structures were identified as delphinidin 3-xylosylgalactoside-5-acetylglucoside and its deacetylated derivative by the usual chemical degradation methods and by spectroscopic methods such as UV-VIS, MS and NMR. Both pigments showed moderate stability and antioxidative activity in a neutral aqueous solution.

  5. The Purple Heart: Background and Issues for Congress

    DTIC Science & Technology

    2012-12-31

    41 At this time, DOD does not consider service members with PTSD eligible for the Purple Heart. Army Regulation 600-8-22 allows “ concussion ...assault, abuse, prison, or war. The cause of PTSD is unknown, although psychological, genetic , social, and physical factors are involved. There are

  6. Halosulfuron reduced purple netsedge (Cyperus rotundus) tuber production and viability

    USDA-ARS?s Scientific Manuscript database

    Weeds persist and cause economic losses in agricultural systems because they exploit an underutilized portion of that system. Reducing the impact of weeds on agroecosystems begins with minimizing the number of propagules (e.g, seeds and tubers) that are produced and returned to the soil. Purple nu...

  7. Halosulfuron reduced purple nutsedge (Cyperus rotundus) tuber production and viability

    USDA-ARS?s Scientific Manuscript database

    Weeds persist and cause economic losses in agricultural systems because they exploit an underutilized portion of that system. Reducing the impact of weeds on agroecosystems begins with minimizing the number of propagules (e.g, seeds and tubers) that are produced and returned to the soil. Purple nu...

  8. Trial of universal gloving with emollient-impregnated gloves to promote skin health and prevent the transmission of multidrug-resistant organisms in a surgical intensive care unit.

    PubMed

    Bearman, Gonzalo; Rosato, Adriana E; Duane, Therese M; Elam, Kara; Sanogo, Kakotan; Haner, Cheryl; Kazlova, Valentina; Edmond, Michael B

    2010-05-01

    To compare the efficacy of universal gloving with emollient-impregnated gloves with standard contact precautions for the control of multidrug-resistant organisms (MDROs) and to measure the effect on healthcare workers' (HCWs') hand skin health. Prospective before-after trial. An 18-bed surgical intensive care unit. During phase 1 (September 2007 through March 2008) standard contact precautions were used. During phase 2 (March 2008 through September 2008) universal gloving with emollient-impregnated gloves was used, and no contact precautions. Patients were screened for vancomycin-resistant Enterococcus (VRE) and methicillin-resistant Staphylococcus aureus (MRSA). HCW hand hygiene compliance and hand skin health and microbial contamination were assessed. The incidences of device-associated infection and Clostridium difficile infection (CDI) were determined. The rate of compliance with contact precautions (phase 1) was 67%, and the rate of compliance with universal gloving (phase 2) was 78% (P = .01). Hand hygiene compliance was higher during phase 2 than during phase 1 (before patient care, 40% vs 35% of encounters; P = .001; after patient care, 63% vs 51% of encounters; P < .001). No difference was observed in MDRO acquisition. During phases 1 and 2, incidences of device-related infections, in number of infections per 1,000 device-days, were, respectively, 3.7 and 2.6 for bloodstream infection (P = .10), 8.9 and 7.8 for urinary tract infection (P = .10), and 1.0 and 1.1 for ventilator-associated pneumonia (P = .09). The CDI incidence in phase 1 and in phase 2 was, respectively, 2.0 and 1.4 cases per 1,000 patient-days (P = .53). During phase 1, 29% of HCW hand cultures were MRSA positive, compared with 13% during phase 2 (P = .17); during phase 1, 2% of hand cultures were VRE positive, compared with 0 during phase 2 (P = .16). Hand skin health improved during phase 2. Compared with contact precautions, universal gloving with emollient-impregnated gloves was

  9. Towards understanding the mechanisms and the kinetics of nanoparticle penetration through protective gloves

    NASA Astrophysics Data System (ADS)

    Vinches, L.; Peyrot, C.; Lemarchand, L.; Boutrigue, N.; Zemzem, M.; Wilkinson, K. J.; Hallé, S.; Tufenkji, N.

    2015-05-01

    Parallel to the increased use of engineered nanoparticles (ENP) in the formulation of commercial products or in medicine, numerous health & safety agencies have recommended the application of the precautionary principle to handle ENP; namely, the recommendation to use protective gloves against chemicals. However, recent studies reveal the penetration of titanium dioxide nanoparticles through nitrile rubber protective gloves in conditions simulating occupational use. This project is designed to understand the links between the penetration of gold nanoparticles (nAu) through nitrile rubber protective gloves and the mechanical and physical behaviour of the elastomer material subjected to conditions simulating occupational use (i.e., mechanical deformations (MD) and sweat). Preliminary analyses show that nAu suspensions penetrate selected glove materials after exposure to prolonged (3 hours) dynamic deformations. Significant morphological changes are observed on the outer surface of the glove sample; namely, the number and the surface of the micropores on the surface increase. Moreover, nitrile rubber protective gloves are also shown to be sensitive to the action of nAu suspension and to the action of the saline solution used to simulate sweat (swelling).

  10. Mitigation of EMU Cut Glove Hazard from Micrometeoroid and Orbital Debris Impacts on ISS Handrails

    NASA Technical Reports Server (NTRS)

    Ryan, Shannon; Christiansen, Eric L.; Davis, Bruce A.; Ordonez, Erick

    2009-01-01

    Recent cut damages sustained on crewmember gloves during extravehicular activity (ISS) onboard the International Space Station (ISS) have been caused by contact with sharp edges or a pinch point according to analysis of the damages. One potential source are protruding sharp edged crater lips from micrometeoroid and orbital debris (MMOD) impacts on metallic handrails along EVA translation paths. A number of hypervelocity impact tests were performed on ISS handrails, and found that mm-sized projectiles were capable of inducing crater lip heights two orders of magnitude above the minimum value for glove abrasion concerns. Two techniques were evaluated for mitigating the cut glove hazard of MMOD impacts on ISS handrails: flexible overwraps which act to limit contact between crewmember gloves and impact sites, and; alternate materials which form less hazardous impact crater profiles. In parallel with redesign efforts to increase the cut resilience of EMU gloves, the modifications to ISS handrails evaluated in this study provide the means to significantly reduce cut glove risk from MMOD impact craters

  11. Mitigation of EMU Cut Glove Hazard from Micrometeoroid and Orbital Debris Impacts on ISS Handrails

    NASA Astrophysics Data System (ADS)

    Ryan, Shannon; Christiansen, Eric L.; Davis, Bruce A.; Ordonez, Erick

    2009-03-01

    Recent cut damages sustained on crewmember gloves during extravehicular activity (ISS) onboard the International Space Station (ISS) have been caused by contact with sharp edges or a pinch point according to analysis of the damages. One potential source are protruding sharp edged crater lips from micrometeoroid and orbital debris (MMOD) impacts on metallic handrails along EVA translation paths. A number of hypervelocity impact tests were performed on ISS handrails, and found that mm-sized projectiles were capable of inducing crater lip heights two orders of magnitude above the minimum value for glove abrasion concerns. Two techniques were evaluated for mitigating the cut glove hazard of MMOD impacts on ISS handrails: flexible overwraps which act to limit contact between crewmember gloves and impact sites, and; alternate materials which form less hazardous impact crater profiles. In parallel with redesign efforts to increase the cut resilience of EMU gloves, the modifications to ISS handrails evaluated in this study provide the means to significantly reduce cut glove risk from MMOD impact craters.

  12. Analysis of Low-Speed Stall Aerodynamics of a Swept Wing with Laminar-Flow Glove

    NASA Technical Reports Server (NTRS)

    Bui, Trong T.

    2014-01-01

    Reynolds-Averaged Navier-Stokes (RANS) computational fluid dynamics (CFD) analysis was conducted to study the low-speed stall aerodynamics of a GIII aircraft's swept wing modified with a laminar-flow wing glove. The stall aerodynamics of the gloved wing were analyzed and compared with the unmodified wing for the flight speed of 120 knots and altitude of 2300 ft above mean sea level (MSL). The Star-CCM+ polyhedral unstructured CFD code was first validated for wing stall predictions using the wing-body geometry from the First American Institute of Aeronautics and Astronautics (AIAA) CFD High-Lift Prediction Workshop. It was found that the Star-CCM+ CFD code can produce results that are within the scattering of other CFD codes considered at the workshop. In particular, the Star-CCM+ CFD code was able to predict wing stall for the AIAA wing-body geometry to within 1 degree of angle of attack as compared to benchmark wind-tunnel test data. Current results show that the addition of the laminar-flow wing glove causes the gloved wing to stall much earlier than the unmodified wing. Furthermore, the gloved wing has a different stall characteristic than the clean wing, with no sharp lift drop-off at stall for the gloved wing.

  13. Analysis of Low-Speed Stall Aerodynamics of a Swept Wing with Laminar-Flow Glove

    NASA Technical Reports Server (NTRS)

    Bui, Trong

    2013-01-01

    Reynolds-Averaged Navier-Stokes (RANS) computational fluid dynamics (CFD) analysis was conducted to study the low-speed stall aerodynamics of a GIII aircraft s swept wing modified with a laminar-flow wing glove. The stall aerodynamics of the gloved wing were analyzed and compared with the unmodified wing for the flight speed of 120 knots and altitude of 2300 ft above mean sea level (MSL). The Star-CCM+ polyhedral unstructured CFD code was first validated for wing stall predictions using the wing-body geometry from the First AIAA CFD High-Lift Prediction Workshop. It was found that the Star-CCM+ CFD code can produce results that are within the scattering of other CFD codes considered at the workshop. In particular, the Star-CCM+ CFD code was able to predict wing stall for the AIAA wing-body geometry to within 1 degree of angle of attack as compared to benchmark wind-tunnel test data. Current results show that the addition of the laminar-flow wing glove causes the gloved wing to stall much earlier than the unmodified wing. Furthermore, the gloved wing has a different stall characteristic than the clean wing, with no sharp lift drop-off at stall for the gloved wing.

  14. Design innovation for the management of alpha contaminated unserviceable glove boxes

    SciTech Connect

    Devendra Sandhanshive; Shivaji Shendge; SK Pol; KNS Nair; PK Wattal; IA Sarjekhan, Arun Kumar

    2013-07-01

    With the maturing of nuclear industry, there is an added burden on the Back End of fuel cycle. Radioactive facilities are in the need for refurbishment. This paper describes the steps adopted for managing such alpha contaminated unserviceable Glove Boxes. The first step consisted of in-situ encasement of individual Glove Boxes, encountering the challenges of low head room and space congestion in these laboratories with cognizance to regulatory requirement related to radiation safety. The second step was removal, transfer and placement of encased Glove Boxes in a dedicated facility under continuous surveillance. The glove boxes will remain stored in this facility until arrangements are completed for dismantling and volume reduction in another facility dedicated for this purpose. The final step is the development of an appropriate technique for dismantling/cutting of Glove Boxes in an alpha-tight facility constructed to prevent spread of airborne activity, collection of cut pieces, subsequent decontamination of these metallic wastes and disposal. The paper describes the design scheme for dismantling of the glove box. The description also includes hands on evaluation of tools and gadgets in pilot set-up with a view to incorporating the most credible choice in an upcoming active facility. (authors)

  15. Analysis of Low Speed Stall Aerodynamics of a Swept Wing with Laminar Flow Glove

    NASA Technical Reports Server (NTRS)

    Bui, Trong T.

    2014-01-01

    Reynolds-Averaged Navier-Stokes (RANS) computational fluid dynamics (CFD) analysis was conducted to study the low-speed stall aerodynamics of a GIII aircraft's swept wing modified with a laminar-flow wing glove. The stall aerodynamics of the gloved wing were analyzed and compared with the unmodified wing for the flight speed of 120 knots and altitude of 2300 ft above mean sea level (MSL). The Star-CCM+ polyhedral unstructured CFD code was first validated for wing stall predictions using the wing-body geometry from the First American Institute of Aeronautics and Astronautics (AIAA) CFD High-Lift Prediction Workshop. It was found that the Star-CCM+ CFD code can produce results that are within the scattering of other CFD codes considered at the workshop. In particular, the Star-CCM+ CFD code was able to predict wing stall for the AIAA wing-body geometry to within 1 degree of angle of attack as compared to benchmark wind-tunnel test data. Current results show that the addition of the laminar-flow wing glove causes the gloved wing to stall much earlier than the unmodified wing. Furthermore, the gloved wing has a different stall characteristic than the clean wing, with no sharp lift drop-off at stall for the gloved wing.

  16. Are gloves sufficiently protective when hairdressers are exposed to permanent hair dyes? An in vivo study.

    PubMed

    Antelmi, Annarita; Young, Ewa; Svedman, Cecilia; Zimerson, Erik; Engfeldt, Malin; Foti, Caterina; Bruze, Magnus

    2015-04-01

    The use of permanent hair dyes exposes hairdressers to contact allergens such as p-phenylenediamine (PPD), and the preventive measures are insufficient. To perform an in vivo test to study the protective effect of gloves commonly used by hairdressers. Six gloves from Sweden, Italy and Germany were studied: two vinyl, one natural rubber latex, two nitrile, and one polyethylene. The hair dye used for the provocation was a dark shade permanent dye containing PPD. The dye was mixed with hydrogen peroxide, and 8 PPD-sensitized volunteers were tested with the gloves as a membrane between the hair dye and the skin in a cylindrical open chamber system. Three exposure times (15, 30 and 60 min) were used. Eczematous reactions were found when natural rubber latex, polyethylene and vinyl gloves were tested with the dye. The nitrile gloves gave good protection, even after 60 min of exposure to the hair dye. Many protective gloves used by hairdressers are unsuitable for protection against the risk of elicitation of allergic contact dermatitis caused by PPD. © 2014 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.

  17. Reducing workers' compensation costs for latex allergy and litigation against glove manufacturing companies.

    PubMed

    Edlich, Richard F; Mason, Shelley S; Swainston, Erin; Dahlstrom, Jill J; Gubler, K; Long, William B

    2009-01-01

    It has been well documented in the medical literature that powdered medical gloves can have serious consequences to patients and health-care workers. Adverse reactions to natural latex gloves, such as contact dermatitis and urticaria, occupational asthma, and anaphylaxis, have been documented as a significant cause of Workers' Compensation claims among health-care workers. While the cost of examination and surgical gloves is significant, this factor must be considered with the total cost of Workers' Compensation claims and possible litigation bestowed upon hospitals and glove manufacturing companies. In the United States, Canada, Belgium, and Germany, medical leaders have documented the dangers of powdered latex gloves and have implemented transition programs that are reducing Workers' Compensation claims filed by health-care workers. While attorneys view litigation against powdered glove manufacturers as the "next big tort", the authors of this article were not able to document all compensation costs to disabled workers because many settlements do not allow the claimant to disclose this information.

  18. [The effectiveness of various disinfection methods on the surface of gloved hands].

    PubMed

    Göktaş, P; Oktay, G; Ozel, A

    1992-07-01

    The gloved hands were contaminated by using E.coli and Pseudomonas aeruginosa Brain Heart Infusion broth cultures and the efficacy of tap water, unmedicated bar soap, benzalkonium chloride 1% (Zefiran), Na-hypochloride 1% and 5%, alcohol 70%, hexachlorophene 3%, hexachlorophene 3% liquid soap (Solu-heks), chlorhexidine 1.5% liquid soap (Savlon), chlorhexidine 4% liquid soap (Hibiscrub), povidone-iodine 10% solution (Betadine and polyod), povidone-iodine 7.5% liquid soap (Betadine and Polyod) were compared onto the gloved hands. Disinfectants were applied for 30, 45 and 60 seconds. It was found that washing time of 30 seconds with chlorhexidine 4% (Hibiscrub) liquid soap or povidone-iodine 7.5% liquid soap (Betadine and Polyod) was required to eradicate all the organisms inoculated from both glove surfaces. Povidone-iodine and chlorhexidine were more effective washing agents than the other disinfectants. In underdeveloped or developing countries and areas where gloves can not easily supplied, it has been suggested that gloved hands could be washed between patient treatments and gloves re-used in dentistry, gynecology and like the other areas of medicine. Chlorhexidine 4% and povidone-iodine 7.5% liquid soaps are recommended as a hand-washing agents in these areas.

  19. RoboGlove-A Grasp Assist Device for Earth and Space

    NASA Technical Reports Server (NTRS)

    Diftler, M. A.; Ihrke, C. A.; Bridgwater, L. B.; Rogers, J. M.; Davis, D. R.; Linn, D. M.; Laske, E. A.; Ensley, K. G.; Lee, J. H.

    2015-01-01

    The RoboGlove is an assistive device that can augment human strength, endurance or provide directed motion for use in rehabilitation. RoboGlove is a spinoff of the highly successful Robonaut 2 (R2) system developed as part of a partnership between General Motors and NASA. This extremely lightweight device employs an actuator system based on the R2 finger drive system to transfer part or the entire grasp load from human tendons to artificial ones contained in the glove. Steady state loads ranging from 15 to 20 lbs. and peaks approaching 50 lbs. are achievable. Work is underway to integrate the RoboGlove system with a space suit glove to add strength or reduce fatigue during spacewalks. Tactile sensing, miniaturized electronics, and on-board processing provide sufficient flexibility for applications in many industries. The following describes the design, mechanical/electrical integration, and control features of the glove in an assembly-line configuration and discusses work toward the space suit application.

  20. [Study of mechanical effects of the EVA glove on finger base with finite element modeling].

    PubMed

    Li, Zhuoyou; Ding, Li; Yue, Guodong

    2013-08-01

    The hand strength of astronauts, when they are outside the space capsule, is highly influenced by the residual pressure (the pressure difference between inside pressure and outside one of the suit) of extravehicular activity spacesuit glove and the pressure exerted by braided fabric. The hand strength decreases significantly on extravehicular activity, severely reducing the operation efficiency. To measure mechanical influence caused by spacesuit glove on muscle-tendon and joints, the present paper analyzes the movement anatomy and biomechanical characteristics of gripping, and then proposes a grip model. With phalangeal joint simplified as hinges, seven muscles as a finger grip energy unit, the Hill muscle model was used to compute the effects. We also used ANSYS in this study to establish a 3-D finite element model of an index finger which included both bones and muscles with glove, and then we verified the model. This model was applied to calculate the muscle stress in various situations of bare hands or hands wearing gloves in three different sizes. The results showed that in order to achieve normal grip strength with the influence caused by superfluous press, the finger's muscle stress should be increased to 5.4 times of that in normal situation, with most of the finger grip strength used to overcome the influence of superfluous pressure. When the gap between the finger surface and the glove is smaller, the mechanical influence which superfluous press made will decrease. The results would provide a theoretical basis for the design of the EVA Glove.

  1. Transcript profiling of structural genes involved in cyanidin-based anthocyanin biosynthesis between purple and non-purple carrot (Daucus carota L.) cultivars reveals distinct patterns.

    PubMed

    Xu, Zhi-Sheng; Huang, Ying; Wang, Feng; Song, Xiong; Wang, Guang-Long; Xiong, Ai-Sheng

    2014-10-01

    Carrots (Daucus carota L.) are among the 10 most economically important vegetable crops grown worldwide. Purple carrot cultivars accumulate rich cyanidin-based anthocyanins in a light-independent manner in their taproots whereas other carrot color types do not. Anthocyanins are important secondary metabolites in plants, protecting them from damage caused by strong light, heavy metals, and pathogens. Furthermore, they are important nutrients for human health. Molecular mechanisms underlying anthocyanin accumulation in purple carrot cultivars and loss of anthocyanin production in non-purple carrot cultivars remain unknown. The taproots of the three purple carrot cultivars were rich in anthocyanin, and levels increased during development. Conversely, the six non-purple carrot cultivars failed to accumulate anthocyanins in the underground part of taproots. Six novel structural genes, CA4H1, CA4H2, 4CL1, 4CL2, CHI1, and F3'H1, were isolated from purple carrots. The expression profiles of these genes, together with other structural genes known to be involved in anthocyanin biosynthesis, were analyzed in three purple and six non-purple carrot cultivars at the 60-day-old stage. PAL3/PAL4, CA4H1, and 4CL1 expression levels were higher in purple than in non-purple carrot cultivars. Expression of CHS1, CHI1, F3H1, F3'H1, DFR1, and LDOX1/LDOX2 was highly correlated with the presence of anthocyanin as these genes were highly expressed in purple carrot taproots but not or scarcely expressed in non-purple carrot taproots. This study isolated six novel structural genes involved in anthocyanin biosynthesis in carrots. Among the 13 analyzed structural genes, PAL3/PAL4, CA4H1, 4CL1, CHS1, CHI1, F3H1, F3'H1, DFR1, and LDOX1/LDOX2 may participate in anthocyanin biosynthesis in the taproots of purple carrot cultivars. CHS1, CHI1, F3H1, F3'H1, DFR1, and LDOX1/LDOX2 may lead to loss of light-independent anthocyanin production in orange and yellow carrots. These results suggest that

  2. The Short-term Protective Effects of 'Non-PPE' Gloves Used by Greenhouse Workers.

    PubMed

    Roff, Martin

    2015-10-01

    Task-based worker exposure assessments are used in regulatory product approval for pesticides. Some agricultural workers may be exposed to pesticide residues predominantly via transfer to the hands during plant tending or crop harvesting. They may use thin 'splash-resistant single-use' (SRSU) gloves or cotton gloves as good industry practice, for example, to protect a delicate crop from bruising, rather than specifically for chemical protection. These 'non-personal protective equipment (PPE)' gloves may or may not have been tested for chemical resistance, but can nevertheless give limited protection from chemicals. This paper reports experiments to assess the protection factors (PFs) of 'non-PPE' gloves against chemicals, to better inform the regulatory exposure assessments.One type of lightweight cotton and three types of 0.1 mm SRSU gloves 25cm long (latex, nitrile, and vinyl) that might be used as 'non-PPE' gloves and one type of 0.4 mm PPE nitrile gauntlet 33cm long were worn by 36 volunteers in greenhouses at four nurseries, handling plants sprayed with transferable but non-permeating strontium acetate in four consecutive 1-h sessions, including one session in which no gloves were worn. Dislodgeable foliar residues were measured by rinsing leaves in bags. Each subject carried out their task such as weeding or trimming, for their four sessions on their set of plants. Handwashes followed each session, and the washings were sampled and analysed for strontium. Unprotected hand contamination was taken to be the within-subject 'challenge' in the absence of gloves. It ranged from 166 to 4091 µg equivalent of strontium acetate on the hands and increased with increasing foliar residues. Geometric mean PFs were 60 (95% CI 38-87, n = 22) for PPE gauntlets, 32 (25-41, n = 65) for SRSU gloves and 5.3 (3.5-8, n = 21) for lightweight cotton. The PFs offered by the waterproof gloves (gauntlets and SRSU) increased with challenge, but for the absorbent cotton gloves it

  3. The Short-term Protective Effects of ‘Non-PPE’ Gloves Used by Greenhouse Workers

    PubMed Central

    Roff, Martin

    2015-01-01

    Task-based worker exposure assessments are used in regulatory product approval for pesticides. Some agricultural workers may be exposed to pesticide residues predominantly via transfer to the hands during plant tending or crop harvesting. They may use thin ‘splash-resistant single-use’ (SRSU) gloves or cotton gloves as good industry practice, for example, to protect a delicate crop from bruising, rather than specifically for chemical protection. These ‘non-personal protective equipment (PPE)’ gloves may or may not have been tested for chemical resistance, but can nevertheless give limited protection from chemicals. This paper reports experiments to assess the protection factors (PFs) of ‘non-PPE’ gloves against chemicals, to better inform the regulatory exposure assessments. One type of lightweight cotton and three types of 0.1 mm SRSU gloves 25cm long (latex, nitrile, and vinyl) that might be used as ‘non-PPE’ gloves and one type of 0.4 mm PPE nitrile gauntlet 33cm long were worn by 36 volunteers in greenhouses at four nurseries, handling plants sprayed with transferable but non-permeating strontium acetate in four consecutive 1-h sessions, including one session in which no gloves were worn. Dislodgeable foliar residues were measured by rinsing leaves in bags. Each subject carried out their task such as weeding or trimming, for their four sessions on their set of plants. Handwashes followed each session, and the washings were sampled and analysed for strontium. Unprotected hand contamination was taken to be the within-subject ‘challenge’ in the absence of gloves. It ranged from 166 to 4091 µg equivalent of strontium acetate on the hands and increased with increasing foliar residues. Geometric mean PFs were 60 (95% CI 38–87, n = 22) for PPE gauntlets, 32 (25–41, n = 65) for SRSU gloves and 5.3 (3.5–8, n = 21) for lightweight cotton. The PFs offered by the waterproof gloves (gauntlets and SRSU) increased with challenge, but for the

  4. Surface pH controls purple-to-blue transition of bacteriorhodopsin. A theoretical model of purple membrane surface.

    PubMed

    Szundi, I; Stoeckenius, W

    1989-08-01

    We have developed a surface model of purple membrane and applied it in an analysis of the purple-to-blue color change of bacteriorhodopsin which is induced by acidification or deionization. The model is based on dissociation and double layer theory and the known membrane structure. We calculated surface pH, ion concentrations, charge density, and potential as a function of bulk pH and concentration of mono- and divalent cations. At low salt concentrations, the surface pH is significantly lower than the bulk pH and it becomes independent of bulk pH in the deionized membrane suspension. Using an experimental acid titration curve for neutral, lipid-depleted membrane, we converted surface pH into absorption values. The calculated bacteriohodopsin color changes for acidification of purple, and titrations of deionized blue membrane with cations or base agree well with experimental results. No chemical binding is required to reproduce the experimental curves. Surface charge and potential changes in acid, base and cation titrations are calculated and their relation to the color change is discussed. Consistent with structural data, 10 primary phosphate and two basic surface groups per bacteriorhodopsin are sufficient to obtain good agreement between all calculated and experimental curves. The results provide a theoretical basis for our earlier conclusion that the purple-to-blue transition must be attributed to surface phenomena and not to cation binding at specific sites in the protein.

  5. F-111 TACT natural laminar flow glove flight results

    NASA Technical Reports Server (NTRS)

    Montoya, L. C.; Steers, L. L.; Trujillo, B.

    1981-01-01

    Improvements in cruise efficiency on the order of 15 to 40% are obtained by increasing the extent of laminar flow over lifting surfaces. Two methods of achieving laminar flow are being considered, natural laminar flow and laminar flow control. Natural laminar flow (NLF) relies primarily on airfoil shape while laminar flow control involves boundary layer suction or blowing with mechanical devices. The extent of natural laminar flow that could be achieved with consistency in a real flight environment at chord Reynolds numbers in the range of 30 x 10(6) power was evaluated. Nineteen flights were conducted on the F-111 TACT airplane having a NLF airfoil glove section. The section consists of a supercritical airfoil providing favorable pressure gradients over extensive portions of the upper and lower surfaces of the wing. Boundary layer measurements were obtained over a range of wing leading edge sweep angles at Mach numbers from 0.80 to 0.85. Data were obtained for natural transition and for a range of forced transition locations over the test airfoil.

  6. Hazard Analysis for Building 34 Vacuum Glove Box Assembly

    NASA Technical Reports Server (NTRS)

    Meginnis, Ian

    2014-01-01

    One of the characteristics of an effective safety program is the recognition and control of hazards before mishaps or failures occur. Conducting potentially hazardous tests necessitates a thorough hazard analysis in order to prevent injury to personnel, and to prevent damage to facilities and equipment. The primary purpose of this hazard analysis is to define and address the potential hazards and controls associated with the Building 34 Vacuum Glove Box Assembly, and to provide the applicable team of personnel with the documented results. It is imperative that each member of the team be familiar with the hazards and controls associated with his/her particular tasks, assignments and activities while interfacing with facility test systems, equipment and hardware. In fulfillment of the stated purposes, the goal of this hazard analysis is to identify all hazards that have the potential to harm personnel, damage the facility or its test systems or equipment, test articles, Government or personal property, or the environment. This analysis may also assess the significance and risk, when applicable, of lost test objectives when substantial monetary value is involved. The hazards, causes, controls, verifications, and risk assessment codes have been documented on the hazard analysis work sheets in Appendix A of this document. The preparation and development of this report is in accordance with JPR 1700.1, "JSC Safety and Health Handbook" and JSC 17773 Rev D "Instructions for Preparation of Hazard Analysis for JSC Ground Operations".

  7. Glove permeation by semiconductor processing mixtures containing glycol-ether derivatives.

    PubMed

    Zellers, E T; Ke, H Q; Smigiel, D; Sulewski, R; Patrash, S J; Han, M W; Zhang, G Z

    1992-02-01

    Results of permeation tests of several glove materials challenged with semiconductor processing formulations containing glycolether derivatives are described. Commercial glove samples of nitrile rubber (Edmont), natural rubber (Edmont and Baxter), butyl rubber (North), PVC Baxter), a natural rubber/neoprene/nitrile blend (Pioneer), and a natural rubber/neoprene blend (Playtex) were tested according to the ASTM F739-85 permeation test method (open-loop configuration). The liquid formulations examined included a positive photoresist thinner containing 2-ethoxyethyl acetate (2-EEA), n-butyl acetate, and xylene; a positive photoresist containing 2-EEA, n-butyl acetate, xylene, polymer resins, and photoactive compounds; a negative photoresist containing 2-methoxyethanol (2-ME), xylene, and cyclized poly(isoprene); and pure 2-methoxyethyl acetate (2-MEA), which is the solvent used in a commercial electron-beam resist. With the exception of the negative photoresist, butyl rubber provided the highest level of protection against the solvent mixtures tested, with no breakthrough observed after 4 hr of continuous exposure at 25 degrees C. Nitrile rubber provided the highest level of protection against the negative photoresist and reasonably good protection against initial exposure to the other solvent mixtures. Gloves consisting of natural rubber or natural rubber blends provided less protection against the mixtures than either nitrile or butyl rubber. For most of the glove samples, permeation of the glycol-ether derivatives contained in the mixtures was faster than that predicted from the permeation of the pure solvents. Increasing the exposure temperature from 25 to 37 degrees C did not significantly affect the performance of the butyl rubber glove. For the other gloves, however, exposures at 37 degrees C resulted in decreases in breakthrough times of 25-75% and increases in steady-state permeation rates of 80-457% relative to values obtained at 25 degrees C. Repeated

  8. The effects of arthritis gloves on people with Rheumatoid Arthritis or Inflammatory Arthritis with hand pain: a study protocol for a multi-centre randomised controlled trial (the A-GLOVES trial).

    PubMed

    Prior, Yeliz; Sutton, Chris; Cotterill, Sarah; Adams, Jo; Camacho, Elizabeth; Arafin, Nazina; Firth, Jill; O'Neill, Terence; Hough, Yvonne; Jones, Wendy; Hammond, Alison

    2017-05-30

    Arthritis gloves are regularly provided as part of the management of people with rheumatoid arthritis (RA) and undifferentiated (early) inflammatory arthritis (IA). Usually made of nylon and elastane (i.e. Lycra®), these arthritis gloves apply pressure with the aims of relieving hand pain, stiffness and improving hand function. However, a systematic review identified little evidence supporting their use. We therefore designed a trial to compare the effectiveness of the commonest type of arthritis glove provided in the United Kingdom (Isotoner gloves) (intervention) with placebo (control) gloves (i.e. larger arthritis gloves providing similar warmth to the intervention gloves but minimal pressure only) in people with these conditions. Participants aged 18 years and over with RA or IA and persistent hand pain will be recruited from National Health Service Trusts in the United Kingdom. Following consent, participants will complete a questionnaire booklet, then be randomly allocated to receive intervention or placebo arthritis gloves. Within three weeks, they will be fitted with the allocated gloves by clinical specialist rheumatology occupational therapists. Twelve weeks (i.e. the primary endpoint) after completing the baseline questionnaire, participants will complete a second questionnaire, including the same measures plus additional questions to explore adherence, benefits and problems with glove-wear. A sub-sample of participants from each group will be interviewed at the end of their participation to explore their views of the gloves received. The clinical effectiveness and cost-effectiveness of the intervention, compared to placebo gloves, will be evaluated over 12 weeks. The primary outcome measure is hand pain during activity. Qualitative interviews will be thematically analysed. This study will evaluate the commonest type of arthritis glove (Isotoner) provided in the NHS (i.e. the intervention) compared to a placebo glove. The results will help

  9. Effect of five brands of latex gloves on the setting time of polyvinyl siloxane putty impression materials.

    PubMed

    Ravikumar, C M; Sangur, Rajashekar

    2012-01-01

    Addition silicone impression materials have been used as impression material for more than 20 years. Although they are among the most expensive impression materials, they became popular during the past decade as they have excellent physical properties. Prevention of infection is an important aspect in dental treatment since dental professionals are routinely exposed to the wide variety of microorganisms present in saliva. Gloves are the most common protective measure used during dental treatment. The gloves are mostly made of latex. In this study, we examine how the setting time of three types polyvinyl putty materials were affected by the use of five different brands of latex gloves and one brand of vinyl gloves. Each material was first mixed without wearing gloves according to the manufacturer's instructions. After the stipulated mixing time, the setting time was measured using the Vicat needle. The setting time is measured from the time of mixing till the time that the needle does not produce any indentation on the surface of the material. The putty material was then mixed with gloved hands (using the five different brands of latex gloves in turn) and the setting time was measured. Then the material was mixed with washed gloved hands, and the setting time was measured again. Finally, the material was mixed with vinyl gloved hands and the setting time was measured. The following conclusions were drawn from the study: Reprosil and Express showed significant variation in the setting time with the latex gloved hands.There was no significant variation in the setting time when material was mixed with unwashed vs washed gloved hands.Vinyl gloves did not significantly affect the setting time of any of the putty impression materials.

  10. Permeability of hair dye compounds p-phenylenediamine, toluene-2,5-diaminesulfate and resorcinol through protective gloves in hairdressing.

    PubMed

    Lind, Marie-Louise; Johnsson, Stina; Meding, Birgitta; Boman, Anders

    2007-07-01

    Dermal exposure to skin irritants and contact allergens is frequent in hairdressing. Hair dyeing is popular today and involves exposure to highly potent contact allergens, such as p-phenylenediamine (PPD). Use of protective gloves to prevent contact with skin-damaging substances is essential. The aim of the present study was to determine the resistance to permeation by PPD, toluene-2,5-diaminesulfate (TDS) and resorcinol (RES) through protective gloves used in hairdressing in Sweden. The permeation of PPD, TDS and RES through four types of protective gloves made of natural rubber latex (NRL), polyvinylchloride (PVC), nitrile rubber (NR) and polyethene (PE) was tested using the American Society for Testing and Materials (1-inch) test cell. Exposure solutions were 5% PPD (w/v), 0.75% TDS and 10% RES in borate buffer with 0.2 M ascorbic acid. The cumulative breakthrough, the so-called 'time-lag breakthrough' (Lag-BT), and permeation rate were determined for each substance and glove. For the NRL glove, the permeated amounts were below the analytical detection levels for all the tested substances. The NR glove was permeated only by RES, with a Lag-BT of 183 min. The PE glove was the thinnest glove and had a Lag-BT of 32 min for PPD; however, the steady-state permeation rate was only 0.031 nmol cm(-2) min(-1). The PVC glove gave the lowest protection against PPD and RES. TDS did not permeate any of the tested gloves. All the tested gloves were disposable, and all need to be changed often and disposed of after use. In conclusion, if properly used, all the tested gloves give considerable protection against permeation of PPD, TDS and RES.

  11. The Effect of Universal Glove and Gown Use on Adverse Events in Intensive Care Unit Patients.

    PubMed

    Croft, Lindsay D; Harris, Anthony D; Pineles, Lisa; Langenberg, Patricia; Shardell, Michelle; Fink, Jeffrey C; Simoni-Wastila, Linda; Morgan, Daniel J

    2015-08-15

    No randomized trials have examined the effect of contact precautions or universal glove and gown use on adverse events. We assessed if wearing gloves and gowns during all patient contact in the intensive care unit (ICU) changes adverse event rates. From January 2012 to October 2012, intervention ICUs of the 20-site Benefits of Universal Gloving and Gowning cluster randomized trial required that healthcare workers use gloves and gowns for all patient contact. We randomly sampled 1800 medical records of adult patients not colonized with antibiotic-resistant bacteria and reviewed them for adverse events using the Institute for Healthcare Improvement Global Trigger Tool. Four hundred forty-seven patients (24.8%) had 1 or more ICU adverse events. Adverse events were not associated with universal glove and gown use (incidence rate ratio [IRR], 0.81; 95% confidence interval [CI], .48-1.36). This did not change with adjustment for ICU type, severity of illness, academic hospital status, and ICU size, (IRR, 0.91; 95% CI, .59-1.42; P = .68). Rates of infectious adverse events also did not differ after adjusting for the same factors (IRR, 0.75; 95% CI, .47-1.21; P = .24). In ICUs where healthcare workers donned gloves and gowns for all patient contact, patients were no more likely to experience adverse events than in control ICUs. Concerns of adverse events resulting from universal glove and gown use were not supported. Similar considerations may be appropriate regarding use of contact precautions. NCT0131821. Published by Oxford University Press on behalf of the Infectious Diseases Society of America 2015. This work is written by (a) US Government employee(s) and is in the public domain in the US.

  12. Use of Protective Gloves in Nail Salons in Manhattan, New York City.

    PubMed

    Basch, Corey; Yarborough, Christina; Trusty, Stephanie; Basch, Charles

    2016-07-01

    Nail salon owners in New York City (NYC) are required to provide their workers with gloves and it is their responsibility to maintain healthy, safe working spaces for their employees. The purpose of this study was to determine the frequency with which nail salon workers wear protective gloves. A Freedom of Information Law request was submitted to New York Department of State's Division of Licensing Services for a full list of nail salons in Manhattan, NYC. A sample population of 800 nail salons was identified and a simple random sample (without replacement) of 30% (n=240) was selected using a random number generator. Researchers visited each nail salon from October to December of 2015, posing as a potential customer to determine if nail salon workers were wearing gloves. Among the 169 salons in which one or more workers was observed providing services, a total of 562 workers were observed. For 149 salons, in which one or more worker was observed providing services, none of the workers were wearing gloves. In contrast, in six of the salons observed, in which one or more workers was providing services, all of the workers (1 in 2 sites, 2 in 1 site, 3 in 2 sites, and 4 in 1 site) were wearing gloves. Almost three-quarters of the total number of workers observed (n=415, 73.8%) were not wearing gloves. The findings of this study indicate that, despite recent media attention and legislation, the majority of nail salon workers we observed were not wearing protective gloves when providing services.

  13. Effect of dental tool surface texture and material on static friction with a wet gloved fingertip.

    PubMed

    Laroche, Charles; Barr, Alan; Dong, Hui; Rempel, David

    2007-01-01

    Hand injuries are an important cause of pain and disability among dentists and dental hygienists and may be due to the high pinch forces involved in periodontal work. The pinch forces required to perform scaling may be reduced by increasing the friction between the tool and fingers. The purpose of this study was to determine whether modifying the tool material, surface texture, or glove type altered the coefficient of static friction for a wet gloved finger. Seven tools with varying surface topography were machined from 13 mm diameter stainless steel and Delrin and mounted to a 6-component force plate. The textures tested were a fine, medium and coarse diamond knurled pattern and a medium and fine annular pattern (concentric rings). Thirteen subjects pulled their gloved, wet thumb pad along the long axis of the tool while maintaining a normal force of 40 N. Latex and nitrile gloves were tested. The coefficient of static friction was calculated from the shear force history. The mean coefficients of static friction ranged from 0.20 to 0.65. The coefficient of static friction was higher for a smooth tool of Delrin than one of stainless steel. Differences in the coefficient of static friction were observed between the coarse and medium knurled patterns and the fine knurled and annular patterns. Coefficients of static friction were higher for the nitrile glove than the latex glove for tools with texture. These findings may be applied to the design of hand tools that require fine motor control with a wet, gloved hand.

  14. Impact of universal gowning and gloving on health care worker clothing contamination.

    PubMed

    Williams, Calvin; McGraw, Patty; Schneck, Elyse E; LaFae, Anna; Jacob, Jesse T; Moreno, Daniela; Reyes, Katherine; Cubillos, G Fernando; Kett, Daniel H; Estrella, Ronald; Morgan, Daniel J; Harris, Anthony D; Drees, Marci

    2015-04-01

    To determine whether gowning and gloving for all patient care reduces contamination of healthcare worker (HCW) clothing, compared to usual practice. Cross-sectional surveys. Five study sites were recruited from intensive care units (ICUs) randomized to the intervention arm of the Benefits of Universal Gown and Glove (BUGG) study. All HCWs performing direct patient care in the study ICUs were eligible to participate. Surveys were performed first during the BUGG intervention study period (July-September 2012) with universal gowning/gloving and again after BUGG study conclusion (October-December 2012), with resumption of usual care. During each phase, HCW clothing was sampled at the beginning and near the end of each shift. Cultures were performed using broth enrichment followed by selective media. Acquisition was defined as having a negative clothing culture for samples taken at the beginning of a shift and positive clothing culture at for samples taken at the end of the shift. A total of 348 HCWs participated (21-92 per site), including 179 (51%) during the universal gowning/gloving phase. Overall, 51 (15%) HCWs acquired commonly pathogenic bacteria on their clothing: 13 (7.1%) HCWs acquired bacteria during universal gowning/gloving, and 38 (23%) HCWs acquired bacteria during usual care (odds ratio [OR], 0.3; 95% confidence interval [CI], 0.2-0.6). Pathogens identified included S. aureus (25 species, including 7 methicillin-resistant S. aureus [MRSA]), Enterococcus spp. (25, including 1 vancomycin-resistant Enterococcus [VRE]), Pseudomonas spp. (4), Acinetobacter spp. (4), and Klebsiella (2). Nearly 25% of HCWs practicing usual care (gowning and gloving only for patients with known resistant bacteria) contaminate their clothing during their shift. This contamination was reduced by 70% by gowning and gloving for all patient interactions.

  15. Use of Protective Gloves in Nail Salons in Manhattan, New York City

    PubMed Central

    2016-01-01

    Objectives: Nail salon owners in New York City (NYC) are required to provide their workers with gloves and it is their responsibility to maintain healthy, safe working spaces for their employees. The purpose of this study was to determine the frequency with which nail salon workers wear protective gloves. Methods: A Freedom of Information Law request was submitted to New York Department of State’s Division of Licensing Services for a full list of nail salons in Manhattan, NYC. A sample population of 800 nail salons was identified and a simple random sample (without replacement) of 30% (n=240) was selected using a random number generator. Researchers visited each nail salon from October to December of 2015, posing as a potential customer to determine if nail salon workers were wearing gloves. Results: Among the 169 salons in which one or more workers was observed providing services, a total of 562 workers were observed. For 149 salons, in which one or more worker was observed providing services, none of the workers were wearing gloves. In contrast, in six of the salons observed, in which one or more workers was providing services, all of the workers (1 in 2 sites, 2 in 1 site, 3 in 2 sites, and 4 in 1 site) were wearing gloves. Almost three-quarters of the total number of workers observed (n=415, 73.8%) were not wearing gloves. Conclusions: The findings of this study indicate that, despite recent media attention and legislation, the majority of nail salon workers we observed were not wearing protective gloves when providing services. PMID:27499167

  16. A review of compression glove modifications to enhance functional grip: a case series.

    PubMed

    Dewey, William Scott; Richard, Reg L; Hedman, Travis L; Chapman, Ted T; Quick, Charles D; Holcomb, John B; Wolf, Steve E

    2007-01-01

    A common complaint among patients with burns is their inability to grasp items while wearing compression gloves. Recent technological innovations permit the addition of grip-enhancing material to garment fabric. The purpose of this case series was to describe the course of development of compression gloves with enhanced grip modifications. Five different types of grip modifications were made during a period of 18 months. Five subjects who were prescribed compression gloves tested each type of glove. The gloves were fabricated with grip-enhancing material on the palmar surface in five ways: 1) rectangular rubber tabs; 2) honeycomb pattern silicone; 3) wave-like pattern silicone; 4) line pattern silicone beads; 5) line pattern silicone beads embedded into the fabric. Each glove was evaluated on a three-point Likert scale (0 = poor, 1 = moderate, 2 = good) for grip-enhancing qualities and durability. All five subjects reported similar experiences with each glove type: 1) the rectangular rubber tabs demonstrated poor grip and moderate durability; 2) the honeycomb pattern provided good grip but poor durability; 3) the wave pattern had good grip and moderate durability; 4) the silicone beads adhered to the fabric had moderate grip but poor durability; 5) the silicone beads embedded into the fabric had moderate grip and good durability. The wave pattern provided the best gripping capability and silicone embedded into the fabric demonstrated the best durability. A wave-like pattern silicone material embedded into the fabric seems to provide the best combination of grip and durability to enhance activities of daily living performance.

  17. Adequate Hand Washing and Glove Use Are Necessary To Reduce Cross-Contamination from Hands with High Bacterial Loads.

    PubMed

    Robinson, Andrew L; Lee, Hyun Jung; Kwon, Junehee; Todd, Ewen; Rodriguez, Fernando Perez; Ryu, Dojin

    2016-02-01

    Hand washing and glove use are the main methods for reducing bacterial cross-contamination from hands to ready-to-eat food in a food service setting. However, bacterial transfer from hands to gloves is poorly understood, as is the effect of different durations of soap rubbing on bacterial reduction. To assess bacterial transfer from hands to gloves and to compare bacterial transfer rates to food after different soap washing times and glove use, participants' hands were artificially contaminated with Enterobacter aerogenes B199A at ∼9 log CFU. Different soap rubbing times (0, 3, and 20 s), glove use, and tomato dicing activities followed. The bacterial counts in diced tomatoes and on participants' hands and gloves were then analyzed. Different soap rubbing times did not significantly change the amount of bacteria recovered from participants' hands. Dicing tomatoes with bare hands after 20 s of soap rubbing transferred significantly less bacteria (P < 0.01) to tomatoes than did dicing with bare hands after 0 s of soap rubbing. Wearing gloves while dicing greatly reduced the incidence of contaminated tomato samples compared with dicing with bare hands. Increasing soap washing time decreased the incidence of bacteria recovered from outside glove surfaces (P < 0.05). These results highlight that both glove use and adequate hand washing are necessary to reduce bacterial cross-contamination in food service environments.

  18. Biaxial flex-fatigue and viral penetration of natural rubber latex gloves before and after artificial aging.

    PubMed

    Schwerin, Matthew R; Walsh, Donna L; Coleman Richardson, D; Kisielewski, Richard W; Kotz, Richard M; Routson, Licia B; David Lytle, C

    2002-01-01

    Barrier integrity of unaged and oven-aged (at 70 degrees C) natural rubber latex examination gloves was assessed with a biaxial flex-fatigue method where failure was detected electronically, and by live viral penetration testing performed according to a modified version of ASTM F1671-97a. When no change in barrier properties was detected during flex testing, no virus passage was found after viral challenge. Conversely, when a change in the barrier properties was indicated by the electrical signal, virus passage was found in 74% of the specimens. Flex-fatigue results indicated that unaged test specimens from powdered (PD) and powder-free (PF) nonchlorinated gloves had significantly longer fatigue lives than powder-free chlorinated (CL) gloves from the same manufacturer. Biaxial flexing of oven-aged glove specimens showed a marginal increase in fatigue life for the PF gloves, but no increase for the PD gloves. The fatigue life of the CL gloves was observed to increase significantly after oven aging. However, this appears to be due to a design feature of the test apparatus, wherein peak volume displacement of the worked specimen is held constant. An aging-induced change in the viscoelastic properties of the CL gloves-permanent deformation of the specimens early in the fatigue test-relieves the stress magnitude applied as the test progresses. Thus, permanent deformation acts as a confounding factor in measuring durability of latex gloves by fixed displacement flex-fatigue.

  19. Factors influencing the end of the service life of protective gloves used in car repair shops: a preliminary report.

    PubMed

    Emilia, Irzmańska; Agnieszka, Stefko; Katarzyna, Dyńska-Kukulska

    2015-01-01

    The paper presents the results of an end-of-service-life study on 2 kinds of protective gloves designed for workplaces in which workers are exposed to mineral oils and mechanical factors. The authors developed their own end-of-service-life study method that takes into account factors occurring during real-life use of protective gloves. The examined gloves were subjected to mechanical, chemical, and physical factors. The objective of the study was to compare the protective in new gloves subjected to a laboratory simulation test and in gloves used at workplaces in car repair shops. A further goal was to design a glove assessment procedure that would ensure comprehensive analysis of the actual level of performance provided by gloves exposed to selected chemical and mechanical factors as well as subjected to the influence of temperature and humidity, mechanical damage, and chemical degradation of material. The results lead to the conclusion that simultaneous exposure of protective gloves to mechanical, chemical, and physical factors significantly decreases their performance levels. Furthermore, similar performance levels were obtained for gloves subjected to laboratory simulation tests and for those used in the workplace.

  20. Purple acid phosphatase in the walls of tobacco cells.

    PubMed

    Kaida, Rumi; Hayashi, Takahisa; Kaneko, Takako S

    2008-10-01

    Purple acid phosphatase isolated from the walls of tobacco cells appears to be a 220kDa homotetramer composed of 60kDa subunits, which is purple in color and which contains iron as its only metal ion. Although the phosphatase did not require dithiothreitol for activity and was not inhibited by phenylarsine oxide, the enzyme showed a higher catalytic efficiency (k(cat)/K(m)) for phosphotyrosine-containing peptides than for other substrates including p-nitrophenyl-phosphate and ATP. The phosphatase formed as a 120kDa dimer in the cytoplasm and as a 220kDa tetramer in the walls, where Brefeldin A blocked its secretion during wall regeneration. According to our double-immunofluorescence labeling results, the enzyme might be translocated through the Golgi apparatus to the walls at the interphase and to the cell plate during cytokinesis.

  1. Confirmation of a purple-leaved plum graft hybrid.

    PubMed

    Zhou, X M; Liu, Y S; Li, X J

    2013-03-11

    Fifty-seven scions from an adult purple-leaved plum tree were grafted onto the crown of a 6-year-old Yuhuang plum tree and compared to the control of a non-grafted tree. The floral buds of the purple-leaved plum were fully removed before blossoming to avoid sexual hybridization between the two species. The seeds of the Yuhuang plum were picked in July and sown in the spring after stratification. Three, eleven and eight variants with purplish red leaves were found among the seedlings that grew from the seeds picked in 1999, 2000, and 2001, respectively. The ratio of variant occurrence ranged from 2.3 to 15.8%. Our results confirmed the observation of a graft hybrid by Luther Burbank.

  2. Quantification of thermal motions in the purple membrane

    NASA Astrophysics Data System (ADS)

    Lehnert, U.; Réat, V.; Kessler, B.; Oesterhelt, D.; Zaccai, G.

    Local atomic motions in bacteriorhodopsin (BR), the membrane protein in purple membranes (PMs) of Halobacterium salinarum, were studied by incoherent neutron scattering. The analysed sample consisted of fully deuterated purple membranes with BR-containing H-retinal, H-tryptophan, and H-methionine. These labelled groups are present in the retinal binding pocket and the extracellular part of BR. By using incoherent neutron scattering on two different backscattering instruments at the Institut Laue-Langevin, we determined the mean-square displacements of small- and large-amplitude motions as a function of temperature for labelled as well as completely hydrogenated PM samples at different hydration states. We showed that the dynamics of the labelled part is more rigid, and influenced by temperature and hydration in a different way, than the membrane globally.

  3. Antioxidative effect of purple corn extracts during storage of mayonnaise.

    PubMed

    Li, Chun-Ying; Kim, Hee-Woong; Li, He; Lee, Deug-Chan; Rhee, Hae-Ik

    2014-01-01

    Anthocyanin is a powerful natural antioxidant. Purple corn husk is rich in anthocyanin. In this paper the antioxidative effect of anthocyanin-rich purple corn husk extract (PCHE) in mayonnaise during storage was studied. The antioxidative effect of the mayonnaise containing PCHE was evaluated by measuring peroxide values, p-anisidine values, total oxidation values, acid values, and iodine values at time intervals for 10 weeks. The antioxidative effect of the mayonnaise containing PCHE was higher than that of mayonnaise with chemical antioxidants BHT and EDTA as positive control. The mayonnaise containing 0.4 g/kg PCHE showed the strongest antioxidative performance during storage. This study suggests that PCHE could be used as natural antioxidant in high fat food and as a substitute to chemical antioxidant with its purplish colour marking its difference from ordinary mayonnaise. Such colour difference will tell consumers that their food contains natural antioxidants. Copyright © 2013 Elsevier Ltd. All rights reserved.

  4. Purple Virtues: A Leadership Cure for Unhealthy Rivalry

    DTIC Science & Technology

    2001-01-01

    services must be ever more diligent in collectively avoiding potential land mines that can set off scandal.14 Overall, the envi- PURPLE VIRTUES 35...established not virtues but “core values.” This is a problem. Integrity- based conduct must flow more from funda­ mental virtues than situational...Although a variety of virtu­ ous traits exists, in general one can distill them into four cardinal virtues . Justice in­ volves relationships, both

  5. Wearable Flexible and Stretchable Glove Biosensor for On-Site Detection of Organophosphorus Chemical Threats.

    PubMed

    Mishra, Rupesh K; Hubble, Lee J; Martín, Aida; Kumar, Rajan; Barfidokht, Abbas; Kim, Jayoung; Musameh, Mustafa M; Kyratzis, Ilias L; Wang, Joseph

    2017-04-28

    A flexible glove-based electrochemical biosensor with highly stretchable printed electrode system has been developed as a wearable point-of-use screening tool for defense and food security applications. This disposable-mechanically robust "lab-on-a-glove" integrates a stretchable printable enzyme-based biosensing system and active surface for swipe sampling on different fingers, and is coupled with a compact electronic interface for electrochemical detection and real-time wireless data transmission to a smartphone device. Stress-enduring inks are used to print the electrode system and the long serpentine connections to the wireless electronic interface. Dynamic mechanical deformation, bending, and stretching studies illustrate the resilience and compliance of the printed traces against extreme mechanical deformations expected for such on-glove sampling/sensing operation. An organophosphorus hydrolase (OPH)-based biosensor system on the index finger enables rapid on-site detection of organophosphate (OP) nerve-agent compounds on suspicious surfaces and agricultural products following their swipe collection on the thumb finger. The new wireless glove-based biosensor system offers considerable promise for field screening of OP nerve-agents and pesticides in defense and food-safety applications, with significant speed and cost advantages. Such "lab-on-a-glove" demonstration opens the area of flexible wearable sensors to future on-the-hand multiplexed chemical detection in diverse fields.

  6. Misuse of gloves: the foundation for poor compliance with hand hygiene and potential for microbial transmission?

    PubMed

    Girou, E; Chai, S H T; Oppein, F; Legrand, P; Ducellier, D; Cizeau, F; Brun-Buisson, C

    2004-06-01

    Improvement in hand hygiene compliance is important for reducing cross-infection by micro-organisms. The objective of this prospective observational study was to measure how the improper use of gloves limits compliance to hand hygiene and exposes patient's to infection. The study was conducted in five wards (three intensive care units and two medical wards) in a French university hospital. Staff-patient and staff-environment contacts were observed in 120 healthcare workers caring for patients colonized or infected with pathogenic bacteria. Hand hygiene was not undertaken due to improper gloving in 64.4% (95%CI, 64.1% to 65.1%) of instances. Possible microbial transmission might have occurred in 18.3% (95%CI, 17.8% to 18.8%) of all contacts because used gloves were not removed before performing care activities that necessitated strict aseptic precautions. Failure to change or remove contaminated gloves was a major component in the poor compliance with hand hygiene and carried a high-risk of microbial transmission. Improving hand hygiene compliance will require changing healthcare workers behaviour towards glove use.

  7. Analysis of Potential Glove-Induced Hand Injury Metrics During Typical Neutral Buoyancy Training Operations

    NASA Technical Reports Server (NTRS)

    McFarland, Shane

    2016-01-01

    Injuries to the hands are common among astronauts who train for extravehicular activity. When the gloves are pressurized, they restrict movement and create pressure points during tasks, sometimes resulting in pain, muscle fatigue, abrasions, and occasionally more severe injuries such as onycholysis. A brief review of NASA's Lifetime Surveillance of Astronaut Health's injury database reveals that 76 percent of astronaut hand and arm injuries from training between 1993 and 2010 occurred either to the fingernail, finger crotch, metacarpophalangeal joint, or fingertip. The purpose of this study was to assess the potential of using small sensors to measure forces acting on the fingers and hand within pressurized gloves and other variables such as skin temperature, humidity, and fingernail strain of a NASA crewmember during typical NBL (Neutral Buoyancy Laboratory) training activity. During the 5-hour exercise, the crewmember seemed to exhibit very large forces on some fingers, resulting in higher strain than seen in previous glove-box testing. In addition, vital information was collected on the glove cavity environment with respect to temperature and humidity. All of this information gathered during testing will be carried forward into future testing, potentially in glove-box- or 1G- (1 gravitational force) or NBL-suited environments, to better characterize and understand the possible causes of hand injury amongst NASA crew.

  8. A pneumatic glove and immersive virtual reality environment for hand rehabilitative training after stroke.

    PubMed

    Connelly, Lauri; Jia, Yicheng; Toro, Maria L; Stoykov, Mary Ellen; Kenyon, Robert V; Kamper, Derek G

    2010-10-01

    While a number of devices have recently been developed to facilitate hand rehabilitation after stroke, most place some restrictions on movement of the digits or arm. Thus, a novel glove was developed which can provide independent extension assistance to each digit while still allowing full arm movement. This pneumatic glove, the PneuGlove, can be used for training grasp-and-release movements either with real objects or with virtual objects in a virtual reality environment. Two groups of stroke survivors, with seven subjects in each group, completed a six-week rehabilitation training protocol, consisting of three 1-h sessions held each week. One group wore the PneuGlove during training, performed both within a novel virtual reality environment and outside of it with physical objects, while the other group completed the same training without the device. Across subjects, significant improvements were observed in the Fugl-Meyer Assessment for the upper extremity (p < 0.001), the hand/wrist portion of the Fugl-Meyer Assessment (p < 0.001), the Box and Blocks test (p < 0.005), and palmar pinch strength (p < 0.005). While changes in the two groups were not statistically different, the group using the PneuGlove did show greater mean improvement on each of these measures, such as gains of 3.7 versus 2.4 points on the hand/wrist portion of the Fugl-Meyer Assessment and 14 N versus 5 N in palmar pinch.

  9. A quantification of occupational skin exposures and the use of protective gloves among hairdressers in Denmark.

    PubMed

    Lysdal, Susan Hovmand; Johansen, Jeanne Duus; Flyvholm, Mari-Ann; Søsted, Heidi

    2012-06-01

    Occupational hand eczema is common in hairdressers, owing to excessive exposure to wet work and hairdressing chemicals. To quantify occupational skin exposure and the use of protective gloves among hairdressers in Denmark. A register-based study was conducted comprising all graduates from hairdressing vocational schools from 1985 to 2007 (n = 7840). The participants received a self-administered postal questionnaire in May 2009, including questions on hairdressing tasks performed in the past week at work and the extent of glove use. A response rate of 67.9% (n = 5324) was obtained. Of the respondents, 55.7% still worked as hairdressers, and they formed the basis of this study. Daily wet work was excessive; 86.6% had wet hands for ≥2 hr, and 54% for ≥ 4 hr. Glove use was fairly frequent for full head hair colouring and bleaching procedures (93-97.7%), but less frequent for highlighting/lowlighting procedures (49.7-60.5%) and permanent waving (28.3%). Gloves were rarely worn during hair washing (10%), although this was more frequently the case after hair colouring procedures (48.9%). Occupational skin exposure was excessive among hairdressers; the extent of wet work and chemical treatments was high, and glove use was inconsistent, especially for certain hair colouring procedures and wet work tasks. © 2012 John Wiley & Sons A/S.

  10. [Hand burns in children and Aquacel(®) Burn gloves, an alternative to prolonged hospital stays].

    PubMed

    Ridel, P; Perrot, P; Truffandier, M V; Bellier-Waast, F; Duteille, F

    2015-04-01

    Occlusive dressings for second-degree hand burns in children must prevent infection and promote healing. For good management of analgesia, these treatments often require children to be hospitalized. Our goal was to find an alternative to conventional care protocol that would reduce the number of dressings and therefore the length of hospitalization. We report our experience with the use of Aquacel(®) Burn. Non-randomized monocentric prospective study was conducted from 2012 to 2014. The glove was used in the operating room within 72hours after the burn in children younger than 15 years old with isolated superficial to deep 2nd degree hand burns. Once the glove was perfectly stuck to the burn, the children could go back home. We saw them 10 to 12 days after the accident to be sure there was no indication of skin graft. Twenty gloves were used in 16 children aged from 16 months to 13 years. The average length of stay (ALOS) was five days to put the glove on and one day to remove it. Four hands were grafted. Once we get used to the product, Aquacel(®) Burn gloves have reduced the ALOS before skin graft in cases of isolated hand burns in children. Copyright © 2014 Elsevier Masson SAS. All rights reserved.

  11. Effects of glovebox gloves on grip and key pinch strength and contact forces for simulated manual operations with three commonly used hand tools.

    PubMed

    Sung, Peng-Cheng

    2014-01-01

    This study examined the effects of glovebox gloves for 11 females on maximum grip and key pinch strength and on contact forces generated from simulated tasks of a roller, a pair of tweezers and a crescent wrench. The independent variables were gloves fabricated of butyl, CSM/hypalon and neoprene materials; two glove thicknesses; and layers of gloves worn including single, double and triple gloving. CSM/hypalon and butyl gloves produced greater grip strength than the neoprene gloves. CSM/hypalon gloves also lowered contact forces for roller and wrench tasks. Single gloving and thin gloves improved hand strength performances. However, triple layers lowered contact forces for all tasks. Based on the evaluating results, selection and design recommendations of gloves for three hand tools were provided to minimise the effects on hand strength and optimise protection of the palmar hand in glovebox environments. To improve safety and health in the glovebox environments where gloves usage is a necessity, this study provides recommendations for selection and design of glovebox gloves for three hand tools including a roller, a pair of tweezers and a crescent wrench based on the results discovered in the experiments.

  12. Neutralizing antibodies against rotavirus produced in transgenically labelled purple tomatoes.

    PubMed

    Juárez, Paloma; Presa, Silvia; Espí, Joaquín; Pineda, Benito; Antón, María T; Moreno, Vicente; Buesa, Javier; Granell, Antonio; Orzaez, Diego

    2012-04-01

    Edible fruits are inexpensive biofactories for human health-promoting molecules that can be ingested as crude extracts or partially purified formulations. We show here the production of a model human antibody for passive protection against the enteric pathogen rotavirus in transgenically labelled tomato fruits. Transgenic tomato plants expressing a recombinant human immunoglobulin A (hIgA_2A1) selected against the VP8* peptide of rotavirus SA11 strain were obtained. The amount of hIgA_2A1 protein reached 3.6 ± 0.8% of the total soluble protein in the fruit of the transformed plants. Minimally processed fruit-derived products suitable for oral intake showed anti-VP8* binding activity and strongly inhibited virus infection in an in vitro virus neutralization assay. In order to make tomatoes expressing hIgA_2A1 easily distinguishable from wild-type tomatoes, lines expressing hIgA_2A1 transgenes were sexually crossed with a transgenic tomato line expressing the genes encoding Antirrhinum majus Rosea1 and Delila transcription factors, which confer purple colour to the fruit. Consequently, transgenically labelled purple tomato fruits expressing hIgA_2A1 have been developed. The resulting purple-coloured extracts from these fruits contain high levels of recombinant anti-rotavirus neutralizing human IgA in combination with increased amounts of health-promoting anthocyanins.

  13. Orchil and Tyrian Purple: Two Centuries of Bedfords from Leeds.

    PubMed

    Whitworth, Isabella; Koren, Zvi C

    2016-08-01

    A two-century-old archive relating to a Leeds dye manufacturer emerged a number of years ago from a Devon attic. Most items in the archive date from the mid-nineteenth century to the first quarter of the twentieth, a period of dye history when natural dyes overlapped with and were gradually replaced by synthetics. The archive contains material relevant to three generations of the Bedford family's manufacturing and research successes, as well as its close connections to the family of William Henry Perkin. A major portion of the archive's contents is connected to the trade in orchil, a purple-producing dye from a lichen on which the early fortunes of the company were based. A small envelope signed by Charles Samuel Bedford states that it contains "Tyrian Purple." After a historical and chemical investigation, we found that this dyestuff was indeed from mollusca, confirming that this vat-dyed textile sample is the most modern historic sample of Tyrian Purple yet found.

  14. Studies on the catalytic mechanism of pig purple acid phosphatase.

    PubMed

    Wynne, C J; Hamilton, S E; Dionysius, D A; Beck, J L; de Jersey, J

    1995-05-10

    Several independent experiments failed to reveal any evidence in support of the involvement of a phosphoryl-enzyme intermediate in the catalytic mechanism of pig allantoic fluid purple acid phosphatase: (i) attempts to label enzyme with phosphate derived from [32P]p-nitrophenyl phosphate were unsuccessful; (ii) values of kcat for a series of phosphate derivative varied over a wide range, with the enzyme showing a marked preference for activated ester and anhydride substrates over those with a stable leaving group; (iii) burst titrations revealed a "burst" of p-nitrophenol from p-nitrophenyl phosphate only when the enzyme was added after the substrate, suggesting that this result was an artifact of the order of addition of reagents; (iv) transphosphorylation from p-nitrophenyl phosphate to acceptor alcohols could not be detected, even under conditions where a transphosphorylation to hydrolysis ratio as low as 0.015 could have been measured; (v) enzyme-catalyzed exchange of 180 between phosphate and water was demonstrated, although at a rate much slower than that observed for other phosphatases where the involvement of a phosphoryl-enzyme intermediate in the mechanism has been clearly established. The present results are compared with those obtained in similar studies on other phosphatases, particularly the highly homologous beef spleen purple acid phosphatase, and their implications for the catalytic mechanism of the purple acid phosphatases are discussed.

  15. Investigation of the effects of Extra Vehicular Activity (EVA) and Launch and Entry (LES) gloves on performance

    NASA Technical Reports Server (NTRS)

    Bishu, Ram R.

    1992-01-01

    Human capabilities such as dexterity, manipulability, and tactile perception are unique and render the hand as a very versatile, effective and a multipurpose tool. This is especially true for unknown environments such as the EVA environment. In the microgravity environment interfaces, procedures, and activities are too complex, diverse, and defy advance definition. Under these conditions the hand becomes the primary means of locomotion, restraint, and material handling. Facilitation of these activities, with simultaneous protection from the cruel EVA environment are the two, often conflicting, objectives of glove design. The objectives of this study was (1) to assess the effects of EVA gloves at different pressures on human hand capabilities, (2) to devise a protocol for evaluating EVA gloves, (3) to develop force time relations for a number of EVA glove pressure combinations, and (4) to evaluate two types of launch and entry suit gloves. The objectives were achieved through three experiments. The experiments for achieving objectives 1, 2, and 3 were performed in the glove box in building 34. In experiment 1 three types of EVA gloves were tested at five pressure differentials. A number of performance measures were recorded. In experiment 2 the same gloves as in experiment 1 were evaluated in a reduced number of pressure conditions. The performance measure was endurance time. Six subjects participated in both the experiments. In experiment 3 two types of launch and entry suit gloves were evaluated using a paradigm similar to experiment 1. Currently the data is being analyzed. However for this report some summary analyses have been performed. The results indicate that a) With EVA gloves strength is reduced by nearly 50 percent, b) performance decrements increase with increasing pressure differential, c) TMG effects are not consistent across the three gloves tested, d) some interesting gender glove interactions were observed, some of which may have been due to the

  16. A method for assessing the effectiveness of anti-vibration gloves using biodynamic responses of the hand arm system

    NASA Astrophysics Data System (ADS)

    Dong, R. G.; Rakheja, S.; McDowell, T. W.; Welcome, D. E.; Wu, J. Z.; Warren, C.; Barkley, J.; Washington, B.; Schopper, A. W.

    2005-04-01

    Anti-vibration gloves are widely used to help minimize hand-arm vibration exposure. In this study, an alternative method is proposed to assess the vibration isolation effectiveness of these gloves using the biodynamic responses of the bare- and gloved-hand-arm system exposed to vibration. The laboratory experiments were performed with a total of five human subjects using a typical anti-vibration air bladder glove subjected to a broad-band random vibration spectrum in conjunction with a specially designed instrumented handle. The measured data were analyzed to derive the biodynamic responses of the bare as well as gloved human hand-arm system in terms of the apparent mass and the mechanical impedance. The two biodynamic responses were applied to estimate the vibration isolation effectiveness of the glove. The validity of the proposed concept was examined by comparing the estimated vibration transmissibility magnitudes of the glove with those obtained using a palm adapter method. The comparison of the results suggests that the proposed method offers a good alternative for estimating glove vibration transmissibility. The measured data and the proposed method based upon the biodynamic responses were further used to investigate the effect of the palm adapter on the vibration transmissibility of the glove. The results suggest that the presence of the palm adapter between the subject's palm and the glove may not alter the basic trends in the transmissibility response, but it would affect the transmissibility magnitudes in the middle- and high-frequency ranges. A distinct advantage of the proposed method is that it eliminates the use of an adapter in assessing the vibration isolation effectiveness of the gloves.

  17. Aphrodisiac Activity of the Aqueous Crude Extract of Purple Corn ( Zea mays) in Male Rats.

    PubMed

    Carro-Juárez, Miguel; Rodríguez-Santiago, Magdalena G; Franco, Miguel Angel; Hueletl-Soto, María Eugenia

    2017-01-01

    In the present study, the aphrodisiac properties of the purple corn ( Zea mays) in male rats were analyzed. The aqueous crude extract of purple corn (at 25, 50, and 75 mg/kg) was administered to ( a) copulating male rats and ( b) anesthetized and spinal cord transected male rats. Behavioral parameters of copulatory behavior and parameters of the genital motor pattern of ejaculation previous to its inhibition, under the influence of the purple corn extract, are described. Administration of the aqueous crude extract of purple corn significantly facilitates the arousal and execution of male rat sexual behavior without significant influences on the ambulatory behavior. In addition, purple corn extract elicit a significant increase in the number of discharges of the ejaculatory motor patterns and in the total number of genital motor patterns evoked in spinal rats. The present findings show that the aqueous crude extract of purple corn possesses aphrodisiac activity.

  18. Taxonomy of phototrophic green and purple bacteria: a review.

    PubMed

    Pfennig, N; Trüper, H G

    1983-01-01

    The presently existing classification for the green and purple bacteria comprises physiological-ecological assemblages of phototrophic bacteria with anoxygenic photosynthesis. The taxonomic units of the different levels were based entirely on common phenotypic traits, including morphological, cytological, physiological and biochemical characteristics. Since degrees of resemblance form the basis of the grouping, this classification cannot reflect the genetic or evolutionary relatedness of these bacteria, neither among themselves nor with other bacteria. The advantage of the artificial system, however, is the use of features which can be established in most laboratories and which allow the comparison and identification of newly isolated strains with those already studied and described. The four existing families correspond to the four major recognized, ecophysiological groups, the Chlorobiaceae and Chloroflexaceae among the green bacteria, and the Chromatiaceae and Rhodospirillaceae among the purple bacteria. Our knowledge of all these groups is incomplete; this is reflected by the fact that seven new species have been described during the past three years (6th Newsletter on phot. bacteria, Trüper and Hansen, 1982). The description of the new genus and species Erythrobacter longus (Shiba and Simidu, 1982) is also interesting, as it comprises aerobic chemoorganotrophic marine bacteria which form bacteriochlorophyll a and carotenoids; however, no strains were able to grow phototrophilcally. Significant success is currently being obtained in the different approaches toward elucidating the genetic relationships within and outside of the purple and green bacteria. Detailed studies of the lipopolysaccharides of several species and genera of the Rhodospirillaceae (Weckesser et al., 1979, and more recent paper) have proven to be very useful for the recognition of relationships or dissimilarities between the species of a genus or between different genera. Amino acid sequence

  19. Gloves against mineral oils and mechanical hazards: composites of carboxylated acrylonitrile–butadiene rubber latex

    PubMed Central

    Krzemińska, Sylwia; Rzymski, Władysław M.; Malesa, Monika; Borkowska, Urszula; Oleksy, Mariusz

    2016-01-01

    Resistance to permeation of noxious chemical substances should be accompanied by resistance to mechanical factors because the glove material may be torn, cut or punctured in the workplace. This study reports on glove materials, protecting against mineral oils and mechanical hazards, made of carboxylated acrylonitrile–butadiene rubber (XNBR) latex. The obtained materials were characterized by a very high resistance of the produced materials to oil permeation (breakthrough time > 480 min). The mechanical properties, and especially tear resistance, of the studied materials were improved after the addition of modified bentonite (nanofiller) to the XNBR latex mixture. The nanocomposite meets the requirements in terms of parameters characterizing tear, abrasion, cut and puncture resistance. Therefore, the developed material may be used for the production of multifunctional protective gloves. PMID:26757889

  20. Influence on grip of knife handle surface characteristics and wearing protective gloves.

    PubMed

    Claudon, Laurent

    2006-11-01

    Ten subjects were asked to apply maximum torques on knife handles with either their bare hand or their hand wearing a Kevlar fibre protective glove. Four knife handles (2 roughnesses, 2 hardnesses) were tested. Surface electromyograms of 6 upper limb and shoulder muscles were recorded and subject opinions on both knife handle hardness and friction in the hand were also assessed. The results revealed the significant influence of wearing gloves (p<0.0001), knife type (p<0.0005) and handle hardness (p<0.005) on the applied torque. Wearing Kevlar fibre gloves greatly increased the torque independently of the other two parameters. Under the bare hand condition, a 90 degrees ShA slightly rough handle provided the greatest torque. Subject opinion agreed with the observed effects on recorded torque values except for the hardness factor, for which a preference for the 70 degrees ShA value over the 90 degrees ShA value emerged.