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1

Adequacy of preparation for barium enema among elderly outpatients.  

PubMed Central

OBJECTIVE: To determine whether outpatients 75 years of age or older have a higher rate of inadequate bowel preparation for barium enema and of complications associated with the preparation and the test than patients aged 55 to 74 years. DESIGN: Cross-sectional survey. SETTING: Radiology department in a teaching hospital. PATIENTS: Patients 55 years or older referred for a barium enema from March to August 1988. OUTCOME MEASURES: All films were reviewed independently by a study radiologist blind to the staff radiologist's report. Patients were interviewed by telephone within several days after the test to assess the occurrence of problems during the preparation or the test. MAIN RESULTS: Of the 213 patients assessed 72 were excluded: 43 refused to participate or could not be contacted, 16 had previously undergone colonic surgery, and 13 were excluded for other reasons. The remaining 141 patients were separated into three age groups: those 55 to 64 years (46 patients), those 65 to 74 (47) and those 75 or older (48). In 104 cases (74%) the bowel had been prepared adequately; there was no significant difference between the three groups with regard to the adequacy of preparation. The incidence of problems reported by the patients did not differ significantly between the groups. CONCLUSIONS: Outpatients aged 75 years or more are no more likely than those aged 55 to 74 to have problems with bowel preparation or the barium enema itself. Age should not be a criterion for exclusion from barium enema. To try to lower the rate of poor bowel preparation clinicians and radiologists should consider counselling patients more carefully about the importance of proper preparation. Also, the current method of preparation could be examined to determine whether simple changes would significantly improve colon cleanliness.

Grad, R M; Clarfield, A M; Rosenbloom, M; Perrone, M

1991-01-01

2

Barium enema (image)  

MedlinePLUS

A barium enema is performed to examine the walls of the colon. During the procedure, a well lubricated enema tube is inserted gently into the rectum. The barium, a radiopaque (shows up on X-ray) contrast ...

3

21 CFR 201.304 - Tannic acid and barium enema preparations.  

Code of Federal Regulations, 2013 CFR

...widespread practice for tannic acid to be added to barium enemas...X-ray pictures. Tannic acid is capable of causing diminished...medical literature reports a number of deaths associated with the addition of tannic acid to barium enemas....

2013-04-01

4

Relative sensitivity of colonoscopy and barium enema for detection of colorectal cancer in clinical practice  

Microsoft Academic Search

BACKGROUND & AIMS: The relative sensitivities of barium enema and colonoscopy for colorectal cancer are still debated. The aim of this study was to determine the relative sensitivity of barium enema and colonoscopy in general clinical practice. METHODS: Medical records of 2193 consecutive colorectal cancer cases identified in 20 central Indiana hospitals were reviewed. All procedures performed within 3 years

DK Rex; EY Rahmani; JH Haseman; GT Lemmel; S Kaster; JS Buckley

1997-01-01

5

[A case of the latex-induced anaphylaxis by contact with barium enema catheter].  

PubMed

The subject was a 34-year-old female with asthma and atopic dermatitis who had previously undergone a Cesarean section. In December 1995, the patient had an acute abdominal pain, so she underwent a barium enema examination. During the procedure, severe anaphylactic shock developed, and the examination was stopped. The patient responded well to appropriate emergency therapy, and her symptoms were resolved. However, the woman visited our outpatient clinic because the symptoms of her atopic dermatitis got worse. She indicated that she felt itchy when using rubber gloves. Also, at the age of thirty, she had urticaria and dyspnea after drinking a glass of fruit juice. Subsequently radioallergosorbent testing demonstrated the presence of specific IgEs against latex, banana, kiwi, grapefruit, and avocado. Skin prick tests were positive for banana, grapefruit, avocado, and latex extract at a dilution of 1:1000. A scratch test was positive to an extract of a balloon catheter which included 0.3 microg/g latex proteins by the LEAP method. In conclusion, the patient was diagnosed with an anaphylaxis to the latex contained in a balloon catheter used for the barium enema. PMID:14762330

Fujie, Sayuri; Yagami, Akiko; Suzuki, Kayoko; Akamatsu, Hirohiko; Matsunaga, Kayoko

2004-01-01

6

DETECTION OF SMALL LESIONS OF THE LARGE BOWEL--Barium Enema Versus Double Contrast  

PubMed Central

Roentgen study with the so-called opaque barium enema with some modifications is superior to double contrast study as the primary means of demonstrating polyps in the colon as well as other lesions. The method described combines fluoroscopy, high kilovoltage radiography, fluoroscopically aimed “spot films” taken with compression, suction and evacuation studies. In this way unsuspected as well as suspected polyps can be demonstrated, particularly if attention is directed to the region where polyps are most likely to be found—namely, the distal third of the large bowel. Double contrast study is quite valuable as a supplement to the modified “single contrast” barium enema, but it has not been sufficiently perfected to replace the modified opaque barium enema as a primary procedure. In many instances a combination of methods will, of course, be required.

Robinson, J. Maurice

1954-01-01

7

Patient specific doses used to analyse the optimum dose delivery in barium enema examinations  

Microsoft Academic Search

The exposure and geometrical data for 89 barium enema examination patients were recorded manually in five hospitals in Finland. From the recorded data, organ and primary exit doses as well as effective individual doses were calculated for each patient using the ODS-60 program, which is capable of adjusting the calculation phantom according to a patient's size and sex. The mean

J S LAMPINEN; S RANNIKKO

8

Bowel preparation for the double-contrast barium enema: How to maintain coating with cleansing?  

Microsoft Academic Search

AIM: Poor mucosal coating, due to excess of fluid in the colon lumen, is a problem when the oral lavage method (4 litres of an iso-osmotic saline solution containing polyethylene glycol) is used as a preparation for double-contrast barium enema. Our aim was to assess the value of prior administration of sennosides to obtain a clean colon with a reduced

G. Cittadini; F. Sardanelli; E. De Cicco; M. Valle; E. Rosso; R. C. Parodi

1999-01-01

9

A therapeutic barium enema is a practical option to control bleeding from the appendix  

PubMed Central

Background Acute lower gastrointestinal hemorrhage originating from the appendix is rare and often intractable, because it is almost impossible to approach the bleeding point by endoscopy. We herein describe the first case of bleeding from the appendix, which was successively controlled by a therapeutic barium enema administered into the appendix. Case presentation A 71-year-old male visited our hospital because of melena. He has been receiving an anti-coagulation drug, ticlopidine hydrochloride, for 10 years. By an emergency colonoscopy, a hemorrhage was detected in the appendix, and the lesion responsible for the bleeding was regarded to exist in the appendix. Two hundred milliliters of 50 W/V% barium was sprayed into the orifice of the appendix using a spraying tube. The bleeding could thus be immediately stopped, and a radiological examination revealed the accumulation of barium at the cecum and the orifice of the appendix. The barium accumulation disappeared by the next day, and no obvious anal bleeding was observed. Two weeks after stopping the bleeding from the appendix, an appendectomy was performed to prevent any further refractory hemorrhaging. The patient has had no complaints of any abdominal symptoms or anal bleeding for 10 months. Conclusions A therapeutic barium enema is a useful procedure to control bleeding from the appendix and to avoid emergency surgery, such as partial cecectomy and hemicolectomy.

2013-01-01

10

Accidental embryo irradiation during barium enema examinations: An estimation of absorbed dose  

SciTech Connect

The purpose of this report is to investigate the possibility of an embryo to receive a dose of more than 10 cGy, the threshold of malformation induction in embryos reported by the International Commission on Radiological Protection, during barium enema examinations. Thermoluminescent dosimeters were place in a phantom to calculate the depth-to-skin conversion coefficient needed for dose estimation at the average embryo depth in patients. Barium enema examinations were performed in 20 women of childbearing age with diagnostic problems demanding longer fluoroscopy times. Doses at 6 cm, the average embryo depth, were determined by measurements at the patients` skin followed by dose calculation at the site of interest. The range of doses estimated at embryo depth for patients was 1.9 to 8.2 cGy. The dose always exceeded 5 cGy when fluoroscopy time was longer than 7 minutes. The dose at the embryo depth never exceeded 10 cGy. This study indicates that fluoroscopy time should not exceed 7 minutes in childbearing-age female patients undergoing barium enema examinations. 6 refs., 1 fig., 2 tabs.

Damilakis, J.; Perisinakis, K.; Grammatikakis, J. [Univ. Hospital of Iraklion, Crete (Greece)] [and others] [Univ. Hospital of Iraklion, Crete (Greece); and others

1996-04-01

11

[New preparation method for barium enema: efficacy and administration of oral intestinal lavage solution with gastrointestinal prokinetic agent].  

PubMed

The modified Brown's method is commonly used in Japan as preparation for barium enema; however, in a few cases, its cleansing effect is not satisfactory even with the use of adequate diet. To develop a new method of preparation for barium enema, we examined the use of an oral intestinal lavage solution (PEG-ELS) with mosapride and compared it with the modified Brown's method. We administered mosapride and PEG-ELS by four different methods. These methods were assessed by the amount of remaining feces and the adequacy of barium coating. Methods in which mosapride was taken separately before and after the intake of PEG-ELS were more effective than the method using mosapride and the modified Brown's method. Lesion detection was almost the same as that with the modified Brown's method. In conclusion, preparation for barium enema using mosapride before and after PEG-ELS intake is more effective than the modified Brown's method. PMID:14994507

Futei, Shinichi; Sugino, Yoshinori; Kuribayashi, Sachio; Imai, Yutaka; Ueno, Fumiaki; Hibi, Toshifumi; Mitsushima, Toru

2004-01-01

12

Familial colonic varices--a cause of "polyposis" on barium enema.  

PubMed

A 61-year-old woman with diarrhoea had multiple filling defects on a barium enema and was assumed to have multiple colonic polyps. However, colonoscopy showed colonic varices and relatively few true polyps. She bled significantly after polypectomy of a tubular adenoma. There was no evidence to support a diagnosis of portal hypertension or liver disease. A case report of her father's idiopathic colonic varices has previously been reported in this journal in 1985, and we update his subsequent progress and discuss other reports of this rare condition. PMID:18079346

Zaman, L; Bebb, J R; Dunlop, S P; Jobling, J C; Teahon, K

2008-01-01

13

Barium enema  

MedlinePLUS

... be done in a doctor's office or hospital radiology department. It is done after your colon is ... Grainger RG, et al., eds. Grainger & Allison's Diagnostic Radiology: A Textbook of Medical Imaging . 5th ed. Philadelphia, ...

14

Pattern and distribution of colonic diverticulosis: Analysis of 2877 barium enemas in Thailand  

PubMed Central

AIM: To determine the pattern and distribution of colonic diverticulosis in Thai adults. METHODS: A review of the computerized radiology database for double contrast barium enema (DCBE) in Thai adults was performed at the Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand. Incomplete studies and DCBE examinations performed in non-Thai individuals were excluded. The pattern and distribution of colonic diverticulosis detected during DCBE studies from June 2009 to October 2011 were determined. The occurrence of solitary cecal diverticulum, rectal diverticulum and giant diverticulum were reported. Factors influencing the presence of colonic diverticulosis were evaluated. RESULTS: A total of 2877 suitable DCBE examinations were retrospectively reviewed. The mean age of patients was 59.8 ± 14.7 years. Of these patients, 1778 (61.8%) were female and 700 (24.3%) were asymptomatic. Colonic diverticulosis was identified in 820 patients (28.5%). Right-sided diverticulosis (641 cases; 22.3%) was more frequently reported than left-sided diverticulosis (383 cases; 13.3%). Pancolonic diverticulosis was found in 98 cases (3.4%). The occurrence of solitary cecal diverticulum, rectal diverticulum and giant diverticulum were 1.5% (42 cases), 0.4% (12 cases), and 0.03% (1 case), respectively. There was no significant difference in the overall occurrence of colonic diverticulosis between male and female patients (28.3% vs 28.6%, P = 0.85). DCBE examinations performed in patients with some gastrointestinal symptoms revealed the frequent occurrence of colonic diverticulosis compared with those performed in asymptomatic individuals (29.5% vs 25.3%, P = 0.03). Change in bowel habit was strongly associated with the presence of diverticulosis (a relative risk of 1.39; P = 0.005). The presence of diverticulosis was not correlated with age in symptomatic patients or asymptomatic individuals (P > 0.05). CONCLUSION: Colonic diverticulosis was identified in 28.5% of DCBE examinations in Thai adults. There was no association between the presence of diverticulosis and gender or age.

Lohsiriwat, Varut; Suthikeeree, Wanwarang

2013-01-01

15

Flexible fiberoptic sigmoidoscopy and double-contrast barium-enema examination in the identification of adenomas and carcinoma of the colon  

Microsoft Academic Search

To assess the accuracy of the flexible fiberoptic sigmoidoscope, 227 consecutive patients (mean age 61.813 years) requiring\\u000a investigation of colonic symptoms were evaluated using rigid and flexible sigmoidoscopy (PAF and KDV) and double-contrast\\u000a barium enema (SSA). Patients with equivocal findings or adenomatous polyps underwent colonoscopy (TWB). Thirty-four patients\\u000a had carcinoma and 50 patients had one or more adenomatous polyps (>5mm).

P. A. Farands; K. D. Vellacott; S. S. Amar; T. W. Balfour; J. D. Hardcastle; M. Chir

1983-01-01

16

Colorectal Carcinoma Missed on Double Contrast Barium Enema Study: A Problem in Perception  

Microsoft Academic Search

52%, due to a combination of perceptive and technical factors in 32%, and interpreta- tive in 6%. The most common perceptive mistakes were failure to recognize a filling defect in the barium pool and failure to detect the tumor en face in double contrast study. Five cases were only detected at the time of the study as a result of

Frederick M. Kelvin; Richard Gardiner; Wenzel Vas; Giles W. Stevenson

17

The value of colonoscopy and double-contrast barium-enema examinations in the evaluation of patients with subacute and chronic lower intestinal bleeding  

SciTech Connect

One hundred thirty six consecutive patients were examined with histories of guaiac positive stool examinations, bright red blood per rectum, or hematochezia to determine the value of the double-contrast barium-enema (DC-BE) examination and colonoscopy/proctoscopy in establishing bleeding sites. If examination findings were analyzed in conjunction with findings of visual examination of the anal area, the difference in the respective sensitivities of the two examinations was not statistically significant. If findings at the visual inspection were excluded, the DC-BE examination missed 45 of 155 proved bleeding sites (sensitivity, 71%) and 13 of 35 nonbleeding lesions (sensitivity for all lesions 70%), while colonoscopy missed 13 of 155 bleeding sites (sensitivity, 92%) and seven of 35 nonbleeding lesions (sensitivity for all lesions, 90%). The sensitivity of both methods was similar if all rectal and anal lesions were excluded. We conclude that colonoscopy is superior to the DC-BE examination in the detection of bleeding sites but similar in results to the DC-BE examination if lesions in the anal canal and rectum are excluded. The routine use of the DC-BE examination in patients with superficial lesions in the anal canal should be discouraged unless the patient has persistent bleeding or is 50 years old or older.

Thoeni, R.F. (Univ. of California, San Francisco); Venbrux, A.C.

1983-03-01

18

Transabdominal Ultrasonography of the Small Bowel After Oral Administration of a Non-absorbable Anechoic Solution: Comparison with Barium Enteroclysis  

Microsoft Academic Search

AIM: The aim of this study was to determine if oral administration of a non-absorbable anechoic solution conveys any benefit during abdominal ultrasound (US), with special reference to its accuracy.MATERIALS AND METHODS: Fifty-three adult out-patients scheduled for small bowel barium enema (SBE) were included. The day before SBE all patients underwent abdominal US before and after oral administration of an

Giuseppe Cittadini; Veronica Giasotto; Giacomo Garlaschi; Enzo de Cicco; Alessandra Gallo; Giorgio Cittadini

2001-01-01

19

The instant enema in inflammatory disease of the colon.  

PubMed

The instant, or unprepared, double contrast barium enema has been used routinely at St Mark's Hospital in the investigation of active inflammatory disease of the colon since 1963. The use of air contrast is preferred to show the fine detail of the mucosal changes and to detect early involvement. With the instant enema technique the diagnostic results are satisfactory and patients are minimally disturbed by the procedure. The majority of examinations consist of a total of four films, which includes a plain film of the abdomen prior to the administration of contrast. For short-term follow-up a repeat enema with a single film is usually adequate. PMID:436365

Thomas, B M

1979-03-01

20

[Electrolyte solution with polyethylene glycol to cleanse the colon for colonoscopy or enema].  

PubMed

The efficacy and safety of an electrolyte-polyethylene glycol solution (SE-PEG) for colonic lavage, was compared with standard bowel preparation (SBP) in a randomized blinded study of volunteers and patients undergoing colonoscopy and barium enema examination. Side effects, biochemical and hematologic changes and quality of examinations were monitored. Colonoscopy and barium enema was scored by colonic segment for type of residual stool and percentage of bowel wall visualized. For colonoscopy and barium enema, preparation with SE-PEG allowed better visualization and produced more optimal exams (8 vs 3; p less than 0.03) and (6 vs 4; p = NS) respectively. We conclude that colonic lavage with SE-PEG is an alternative bowel preparation method and is cheaper, more safe and effective than SBP procedure. PMID:2091186

Valdovinos, M A; Male, R; Gil, S; Gallo, S; Tielve, M; Ferral, H

1990-01-01

21

Ultrasound-guided water enema: an alternative method of nonoperative treatment for childhood intussusception.  

PubMed

Ultrasound-guided water enema (USWE) reduction was performed in 115 patients with intussusception, which was diagnosed by ultrasound between April 1988 and August 1992 at Keimyung University Dongsan Medical Center. The overall rate of successful reduction was 80.9%. The rate was 91.0% for patients with symptoms of < or = 24 hours' duration, and 61.1% for patients with symptoms of more than 24 hours' duration (P < .001). Six patients had recurrence during the study period (recurrence rate, 5.2%). There was no perforation or other complications during and after the water enema reduction. The authors conclude that (1) USWE reduction for childhood intussusception has a higher rate of successful reduction and a lower rate of recurrence than does barium enema and (2) USWE is safe and may be an alternative method in the nonoperative treatment of intussusception. PMID:8014802

Choi, S O; Park, W H; Woo, S K

1994-04-01

22

Sucralfate enema in ulcerative rectosigmoid lesions  

Microsoft Academic Search

To assess the efficacy of sucralfate enemas in distal colonic ulcerative lesions, 22 patients with radiation proctitis (n=8), idiopathic ulcerative proctitis (n=5), and solitary rectal ulcer (n=5) unresponsive to conventional medical therapy, and those with ulcerated and bleeding rectal polyps awaiting polypectomy (n=4) were studied. Enemas of sucralfate suspension (2 gm in 20 ml water) were administered twice daily for

R. Kochhar; S. K. Mehta; R. Aggarwal; A. Dhar; F. Patel

1990-01-01

23

CRC Screening With Double-Contrast Barium Enema  

Cancer.gov

Skip to Main Content at the National Institutes of Health | www.cancer.gov Print Page E-mail Page Search: You can enter up to 10 e-mail addresses (separate with commas): * Send to: * Your e-mail: E-mail a copy to myself The information used on

24

CRC Screening With Double-Contrast Barium Enema  

Cancer.gov

Skip to Main Content at the National Institutes of Health | www.cancer.gov Print Page E-mail Page Search: Please wait while this form is being loaded.... Home Browse by Resource Type Browse by Area of Research Research Networks Funding Information About

25

TOXICITY STUDIES ON TANNIC ACID ADMINISTERED BY ENEMA* II. THE COLONIC ABSORPTION AND INTRAPERITONEAL TOXICITY OF TANNIC ACID AND ITS HYDROLYTIC PRODUCTS IN RATS  

Microsoft Academic Search

ration for roentgenologic examination or after incorporation in the barium enema. Since gastrointestinal absorption must have preceded hepatotoxicity, the condi- tions necessary for absorption are of inter- est. Unfortunately, absorption from the gastrointestinal tract has been poorly de- fined, largely due to the lack of adequate methods to detect intact tannic acid in biologic fluids and to distinguish it from

PHILLIP A. HARRIS; F. FRANK ZBORALSKE; OSCAR N. RAMBO; ALEXANDER R. MARGULIS; SIDNEY RIEGELMAN

26

Colonic Cleansing for Radiographic Detection of Neoplasia: Efficacy of the Magnesium Citrate-Castor Oil-Cleansing Enema  

Microsoft Academic Search

of the 500 cases. In an additional 1.4% of patients, fecal residue was limited to small amounts in the cecum or ascending colon. In only two cases (0.4%) did fecal material prevent an examination that was suitable for detection of large polypoid or circumfer- ential lesions. The single- and double-contrast barium enemas detected 80% and 91%, respectively, of polypoid lesions

David W. Gelfand; Vu Men Chen; David J. Ott

27

Herbal enema: At the cost of colon  

PubMed Central

Various colonic side-effects of herbal enema have been reported in literature ranging from mild abdominal discomfort to self-limiting haemorrhagic colitis. It rarely requires blood transfusion or subtotal colectomy. We report a 57-year-old male patient developing severe ileo-colitis with persistent massive rectal bleeding immediately after herbal enema administration for the treatment of chronic constipation and was resistant to conservative management. Patient was managed successfully with emergency total laparoscopic colectomy. Post-operative recovery of the patient was excellent.

Prasad, Parmanand; Tantia, Om; Patle, Nirmal M; Mukherjee, Jayanta

2012-01-01

28

Cleansing of the colon without enemas.  

PubMed

Several methods have been used to cleanse the large bowel prior to roentgen examination and rectoscopy for more than ten years. A method with administration of a salt solution (SALAX) in combination with different oral laxatives (Cascara sagrada, Dantron, Bisacodyl) without cleansing enemas is described. Hospitalized patients should have an individual preparation while ambulatory patients are almost completely cleansed if they carefully follow the given instructions. PMID:1215526

Rosengren, J E; Aberg, T

1975-11-01

29

Comparative study of enema retention and preference in ulcerative colitis  

PubMed Central

Background: Therapeutic enemas are often used to treat active colitis but their retention may be limited because of urgency to defecate. Some preparations may be better retained and tolerated than others because of their physical properties. Aim: To compare patient preference and retention of four therapeutic enemas, including a nicotine enema, in patients with ulcerative colitis (UC). Methods: Twenty four patients with active UC received the four trial enemas—corticosteroid, 5-amino salicylate (5-ASA), and nicotine liquid enemas and a corticosteroid foam, in a randomised order, taking one enema on each of four successive nights. Patients scored them 1 to 4 for ease of administration and retention, degree of abdominal bloating, and for their overall preference. Results: Fifteen patients rated nicotine their overall favourite or second favourite, compared with 14 for corticosteroid foam and 11 for 5-ASA and corticosteroid liquids, but this was not significant (p = 0.302). Overall, there was no significant difference in overnight retention. However, the nicotine enema tended to be less well retained in patients with milder urgency but a higher proportion retained it overnight with more severe urgency (p = 0.031 compared with 5-ASA enema). Conclusion: There was no significant difference in patient preference or overall duration of retention for the four enemas.

Ingram, J; Rhodes, J; Evans, B; Newcombe, R; Thomas, G

2005-01-01

30

Early invasive colorectal carcinomas with submucosal invasion: radiographic characteristics with barium double contrast images  

Microsoft Academic Search

Background: We assessed the radiographic characteristics of early colorectal carcinomas with submucosal invasion (CCSI) with the use of double-contrast images. Methods: From 1989 to 1997, 193 patients with 196 CCSI lesions underwent double-contrast barium enema examinations. Three gastrointestinal radiologists retrospectively reviewed the radiographic characteristics of the lesions and classified them as protruding and depressed types by consensus. Further, subclassifying the

G. Iinuma; N. Moriyama; K. Miyakawa; N. Yamamoto; T. Fujii; T. Shimoda; T. Ishikawa; K. Ushio

2003-01-01

31

Hyperphosphataemia after enemas in childhood: prevention and treatment.  

PubMed Central

The case of a child with severe hyperphosphataemia and symptomatic hypocalcaemia secondary to retention of phosphate administered through an antegrade continence enema is reported. Caution should be exercised with the use of phosphate enemas and prompt action taken to remedy retention. The use of glucose with insulin in the emergency management of acute hyperphosphataemia is discussed.

Hunter, M F; Ashton, M R; Griffiths, D M; Ilangovan, P; Roberts, J P; Walker, V

1993-01-01

32

Outpatient keratoplasty.  

PubMed

Outpatient keratoplasty in 103 patients (46 males and 57 females ranging in age from 1 to 90 years) produced no instances of infection, shallow or flat anterior chambers, or anterior synechia formation. Postoperative discomfort was minimal. PMID:3895966

Aquavella, J V; John, T; Garcia, E; Rao, G N

1985-08-15

33

Therapeutic benefits from a poorly absorbed prednisolone enema in distal colitis.  

PubMed Central

A double blind controlled trial has been conducted in 40 patients to compare the therapeutic effects of prednisolone metasulphobenzoate enemas with those of prednisolone-21-phosphate enemas. Both enemas brought about improvement in symptoms and sigmoidoscopic appearances in more than 70% of patients treated. The absorption of prednisolone from the metasulphobenzoate enema in three patients was less than from the 21-phosphate enema. In view of the low plasma prednisolone concentrations obtained, there are theoretical advantages in using a poorly absorbed enema to avoid the possibility of systemic steroid effects in patients requiring long term steroid treatment.

McIntyre, P B; Macrae, F A; Berghouse, L; English, J; Lennard-Jones, J E

1985-01-01

34

Isoosmolar enemas demonstrate preferential gastrointestinal distribution, safety, and acceptability compared with hyperosmolar and hypoosmolar enemas as a potential delivery vehicle for rectal microbicides.  

PubMed

Rectally applied antiretroviral microbicides for preexposure prophylaxis (PrEP) of HIV infection are currently in development. Since enemas (rectal douches) are commonly used by men who have sex with men prior to receptive anal intercourse, a microbicide enema could enhance PrEP adherence by fitting seamlessly within the usual sexual practices. We assessed the distribution, safety, and acceptability of three enema types-hyperosmolar (Fleet), hypoosmolar (distilled water), and isoosmolar (Normosol-R)-in a crossover design. Nine men received each enema type in random order. Enemas were radiolabeled [(99m)Tc-diethylene triamine pentaacetic acid (DTPA)] to assess enema distribution in the colon using single photon emission computed tomography/computed tomography (SPECT/CT) imaging. Plasma (99m)Tc-DTPA indicated mucosal permeability. Sigmoidoscopic colon tissue biopsies were taken to assess injury as well as tissue penetration of the (99m)Tc-DTPA. Acceptability was assessed after each product use and at the end of the study. SPECT/CT imaging showed that the isoosmolar enema had greater proximal colonic distribution (up to the splenic flexure) and greater luminal and colon tissue concentrations of (99m)Tc-DTPA when compared to the other enemas (p<0.01). Colon biopsies also showed that only the hyperosmolar enema caused sloughing of the colonic epithelium (p<0.05). In permeability testing, the hypoosmolar enema had higher plasma (99m)Tc-DTPA 24-h area under the concentration-time curve and peak concentration compared to the hyperosmolar and isoosmolar enemas, respectively. Acceptability was generally good with no clear preferences among the three enema types. The isoosmolar enema was superior or similar to the other enemas in all categories and is a good candidate for further development as a rectal microbicide vehicle. PMID:23885722

Leyva, Francisco J; Bakshi, Rahul P; Fuchs, Edward J; Li, Liye; Caffo, Brian S; Goldsmith, Arthur J; Ventuneac, Ana; Carballo-Diéguez, Alex; Du, Yong; Leal, Jeffrey P; Lee, Linda A; Torbenson, Michael S; Hendrix, Craig W

2013-11-01

35

MR colonography without bowel cleansing or water enema: a pilot study  

PubMed Central

Objectives The value of screening for colorectal cancer has been well demonstrated, and national programmes are being implemented. At present the primary imaging modality is colonoscopy, which has an associated morbidity and mortality. CT colonography (CTC) has been proposed as an alternative, but this is associated with radiation exposure and generally requires bowel preparation. The aim of this pilot study was to assess the feasibility of MR colonography (MRC) without bowel preparation or water enema for the detection of colorectal neoplasia. Methods Patients scheduled for colonoscopy were invited to participate in the study; informed consent was obtained. MRC (with oral barium faecal tagging and colonic air distension) was performed 1–2 weeks before the colonoscopy. Axial T2 weighted single-shot fast spin-echo (prone and supine) and axial T1 weighted fast spoiled gradient-recalled (pre- and post-iv gadolinium) supine MRI sequences were performed. The examinations were reported by two gastrointestinal radiologists by consensus. Colonoscopy following standard bowel preparation was performed by a single endoscopist blinded to the MRC results. Significant lesions were defined as polyps or masses >10 mm in diameter. Results 29 patients were studied. Colonoscopy revealed 25 mass lesions in 13 patients. MRC correctly identified four of the nine lesions >10 mm in diameter (sensitivity 44%; specificity 100%). Although specificity remained high for smaller lesions, sensitivity was poor. Conclusion This pilot study has demonstrated the feasibility of performing MRC without bowel preparation or water enema. This would seem to be a promising modality for colorectal cancer screening. Larger studies are required to determine the accuracy of this modality for the detection of colorectal neoplasia.

Sambrook, A; Mcateer, D; Yule, S; Phull, P

2012-01-01

36

PERFORATION OF MALONE ANTEGRADE CONTINENCE ENEMA: DIAGNOSIS AND MANAGEMENT  

Microsoft Academic Search

Purpose:Severe bowel dysfunction often accompanies neurogenic bladder, and Malone antegrade continence enema (MACE) procedures can lead to improvement in the quality of life of these patients. However, complications such as catheter false passage with subsequent intraperitoneal instillation of irrigation can lead to significant morbidity. We present our experience with the diagnosis and management of this condition.

WILLIAM DeFOOR; EUGENE MINEVICH; PRAMOD REDDY; ALBAHA BARQAWI; DAVID KITCHENS; CURTIS SHELDON; MARTIN KOYLE

2005-01-01

37

Small bowel enema in non-responsive coeliac disease  

Microsoft Academic Search

A small bowel enema was performed in patients with non-responsive coeliac disease, in coeliac patients on a normal diet (untreated) and those who had shown a good response to a gluten free diet, and in control subjects to determine whether there were any specific radiological features of the non-responsive state. A significant reduction in the average number of jejunal folds

N Mike; U Udeshi; P Asquith; J Ferrando

1990-01-01

38

[The diagnostic significance of the small bowel enema in lesions of the small intestine requiring surgery].  

PubMed

Given its anatomical location the small intestine is the section of the digestive tract most inaccessible to objective clinical and instrumental examination. For this reason, traditional investigation methods provide inadequate data. In the barium meal X-ray, images are superimposed and the barium excessively fragmented due to the tortuosity and length of the intestinal loop. Access problems limit the value of endoscopy. The indications to angiography are fairly restrictive. Ultrasound and CT scans provide no conclusive evidence in this area. The so-called Small Bowel Enema technique based on the direct infusion of an opaque contrast medium after duodenal intubation remains the only way to obtain images with a satisfactory diagnostic value and should be the method of choice in examinations of the small intestine. Introduced in the twenties, the value of the technique was long questioned, mainly because it was difficult to perform correctly and it is only quite recently that several decisive technological innovations have made it highly reliable. The present paper describes its use on a series of patients with suspected pathologies of the small intestine requiring surgical treatment. The aim is to specify the correct indications to this technique as well as its limitations with a view to promoting its appropriate use in routine practice. MATERIALS AND METHODS. The study covers 42 small bowel enemas performed on 29 male and 13 female patients aged 12-85 years. Indications to the enema included chronic abdominal pain in 28.5%, chronic diarrhea in 21.4%, pain+diarrhea in 14%, subocclusion in 16.5%, faecal blood in 11.9%, abdominal pain+diarrhea+intestinal haemorrhage in 4.7%, anaemia in 2.4%. We adopted the Sellink technique involving intubation with a French 14 Bilbao-Dotter probe and the infusion of 200-350 cc barium sulphate in a 90%-70% P/V concentration at a speed of 100 ml/min, followed by the infusion of 1000-1500 cc 0.5-1% methylcellulose in a 50-50 mixture with water for double contrast purposes. Mean duration of procedure 35-40 mins. RESULTS. We found lesions of the small intestine in 18 cases or 45% (true positives) and no alterations in 18 or 42.8% (true negatives). In 3 cases (7%) the examination was inconclusive. One false positive and one false negative complete the series, making a diagnostic accuracy of 89.1%. In 23.8% of the total series the diagnosis of Crohn's disease was confirmed; cancerous lesions were found in 11.9% and adhesions following earlier surgery in 9.7%. Surgery confirmed this diagnosis in 10 cases (5 tumours, 3 stenoses caused by adhesion fragments, 2 Crohn's disease) and disproved it in one case. Biopsy was used, for objective confirmation in 5 cases (2 Crohn's disease, 3 negatives). In the other cases reliance was placed on clinical course and the patients' response to treatment. DISCUSSION AND CONCLUSIONS. Examination of our results reveals that in most clinical cases the small bowel enema was used to confirm suspected Crohn's disease (31 cases out of 42) and with a very high degree of diagnostic accuracy (96.7%). In line with data in the literature we decided to base the indication to this examination on certain primary symptoms such as chronic abdominal pain, diarrhea, blood in the faeces, whether in isolation or in combination. On this rather general basis the diagnosis of Crohn's disease concerned only 23.8% of the cases studied, an incidence that rose dramatically in the few cases in which the indications were made more specific. We therefore conclude that the adoption of more restrictive criteria will improve the cost-benefit ratio for this test. Another major pathology in which small bowel enema possesses a high diagnostic value is partial obstruction of the small intestine.(ABSTRACT TRUNCATED AT 400 WORDS) PMID:7970036

Racalbuto, A; Trombatore, G; Greco, L; Gresta, S; De Luca, B; Scilletta, B; Puleo, S; Licata, A

1994-05-01

39

Analysis of air contrast barium enema, computed tomographic colonography, and colonoscopy: prospective comparison  

Microsoft Academic Search

Findings 614 patients completed all three imaging tests. When analysed on a per-patient basis, for lesions 10 mm or larger in size (n=63), the sensitivity of ACBE was 48% (95% CI 35-61), CTC 59% (46-71, p=0·1083 for CTC vs ACBE), and colonoscopy 98% (91-100, p<0·0001 for colonoscopy vs CTC). For lesions 6-9 mm in size (n=116), sensitivity was 35% for

DC Rockey; E Paulson; D Niedzwiecki; W Davis; HB Bosworth; L Sanders; J Yee; J Henderson; P Hatten; S Burdick; A Sanyal; DT Rubin; M Sterling; G Akerkar; K Binmoeller; J Garvie; EJ Bini; K McQuaid; WL Foster; WM Thompson; A Dachman; R Halvorsen

2005-01-01

40

[Outpatient treatments of haemorrhoidal disease].  

PubMed

Only three non-surgical treatments of haemorrhoids are clearly validated: infrared coagulation, injection sclerotherapy and rubber band ligation. Those procedures are only indicated for painless symptoms related to internal haemorrhoids, i.e. bleeding at defecation or spontaneously reducible prolapse. Their main interest is to be possible on the outpatient clinic, with a simple anuscope, without enema or anaesthesia, since they are applied to non-sensitive area on the top of internal haemorrhoids. The aim of all these treatments is to create local fibrosis, which reduces vascular tissue and hold rectal mucosa to underlying muscle. Short-dated efficiency of all techniques is similar on bleeding. After one and three years, rubber band ligation is clearly more efficient than other techniques, especially on prolapse. Secondary effects are non-constant and usually minor, as transient pain or tenesmus, and mild bleeding for few days. Infrequent complications may occur, only after haemorrhoidal banding and sclerotherapy, as thrombosis, massive delayed bleeding or local abscess. Exceptional life-threatening pelvic cellulitis cases have been reported. PMID:21831572

Staumont, Ghislain; Gorez, Etienne; Suduca, Jean-Michel

2011-10-01

41

Therapeutic enema for pediatric ileocolic intussusception: using a balloon catheter improves efficacy.  

PubMed

A therapeutic enema for pediatric intussusception may benefit by using a rectal catheter with an inflated balloon. We compared the efficacy of rectal catheters without and with an inflated balloon for air and liquid enemas. We retrospectively reviewed PACS images and hospital records of children who had a therapeutic enema for intussusception at our institution between January 2006 and May 2011. Sixty-two enemas in 60 children were included. Physician assistants with training in pediatric fluoroscopy and pediatric radiologists were more likely to use air enema (37/41 or 90 %), and general radiologists were more likely to use liquid enema (18/21 or 86 %). However, the reduction rate for air enema overall was only slightly higher than for liquid enema using an inflated balloon catheter (36/40 or 90 % versus 14/17 or 82 %) (P=0.653). For air enema, mean procedure time for successful reductions was shorter with an inflated balloon catheter than with a plastic catheter (7.6 versus 28.2 min) (P<0.009), but the reduction rate was not affected. For liquid enema, the reduction rate was higher with an inflated balloon catheter than without inflation (14/17 or 82 % versus 1/5 or 20 %; P=0.021), but the procedure time was not shortened. No procedural complications were directly attributed to using a rectal catheter with an inflated balloon. Using a rectal catheter with an inflated balloon appears to safely shorten the procedure time of a successful air enema and improve the reduction rate of liquid enema. PMID:23748969

Betz, Bradford W; Hagedorn, Jeffrey E; Guikema, Jeffrey S; Barnes, Courtney L

2013-10-01

42

Barium titanium glycolate: A new barium titanate powder precursor  

SciTech Connect

This paper describes the synthesis and structure of a barium titanium glycolate complex and the calcination into barium titanate preceramic powders that sinter into polycrystalline, tetragonal barium titanate having good dielectric properties.

Day, V.W.; Klemperer, W.G.; Payne, D.A. [Univ. of Nebraska, Lincoln, NE (United States)] [and others] [Univ. of Nebraska, Lincoln, NE (United States); and others

1996-02-01

43

Barium titanium glycolate: A new barium titanate powder precursor  

Microsoft Academic Search

This paper describes the synthesis and structure of a barium titanium glycolate complex and the calcination into barium titanate preceramic powders that sinter into polycrystalline, tetragonal barium titanate having good dielectric properties.

Victor W. Day; W. G. Klemperer; D. A. Payne; Shurong Liang

1996-01-01

44

Molecular Structure of Barium Chloride  

NSDL National Science Digital Library

Barium Chloride was the byproduct of the discovery of radium by Madame Curie. When refining radium, the final separation resulted in barium chloride and radium chloride. Electrophoresis of barium chloride produces small-scale amounts of barium atom. This can be used for obtaining barium for commercial uses. Applications of barium chloride include stimulating the heart and other muscles for medicinal purposes, and also for softening water. Other uses of barium chloride include the manufacturing of barium salts, as pesticide, pigments, boiler detergent, in purifying sugar, as mordant in dyeing and printing textiles, and in the manufacture of caustic soda, polymers, and stabilizers.

2002-08-15

45

Acute left colonic diverticulitis—compared performance of computed tomography and water-soluble contrast enema  

Microsoft Academic Search

PURPOSE: The most valuable radiologic examination to be done initially when acute left colonic diverticulitis is suspected is still a matter of controversy. This study compares the performance between water-soluble contrast enema and computed tomography. METHODS: From 1986 to 1997, all patients admitted in our emergency center with clinically suspected left-colonic diverticulitis had a contrast enema and a computed tomography

Patrick Ambrosetti; Alexandra Jenny; Christophe Becker; François Terrier; Philippe Morel

2000-01-01

46

The Malone Antegrade Continence Enema for Neurogenic and Structural Fecal Incontinence and Constipation  

Microsoft Academic Search

Problems of fecal elimination are commonly encountered by the pediatric urologist and surgeon. The Malone antegrade continence enema has been described as a means to administer a large volume enema via a continent catheterizable appendicocecostomy, resulting in reliable fecal elimination. Of 22 patients undergoing this procedure 16 reported total continence 4 months or longer after surgery. Complications are relatively minor

Martin A. Koyle; Devonna M. Kaji; Manuel Duque; Jodi Wild

1995-01-01

47

Perforation and mortality after cleansing enema for acute constipation are not rare but are preventable  

PubMed Central

Objectives Constipation is a common complaint, frequently treated with cleansing enema. Enemas can be very effective but may cause serious adverse events, such as perforation or metabolic derangement. Our aim was to evaluate the outcome of the use of cleansing enema for acute constipation and to assess adverse events within 30 days of therapy. Methods We performed a two-phase study: an initial retrospective and descriptive study in 2010, followed by a prospective study after intervention, in 2011. According to the results of the first phase we established guidelines for the treatment of constipation in the Emergency Department and then used these in the second phase. Results There were 269 and 286 cases of severe constipation in the first and second periods of the study, respectively. In the first study period, only Fleet® Enema was used, and in the second, this was changed to Easy Go enema (free of sodium phosphate). There was a 19.2% decrease in the total use of enema, in the second period of the study (P < 0.0001). Adverse events and especially, the perforation rate and the 30-day mortality in patients with constipation decreased significantly in the second phase: 3 (1.4%) versus 0 (P = 0.0001) and 8 (3.9%) versus 2 (0.7%) (P = 0.0001), for perforation and death in the first and second period of the study, respectively. Conclusion Enema for the treatment of acute constipation is not without adverse events, especially in the elderly, and should be applied carefully. Perforation, hyperphosphatemia (after Fleet Enema), and sepsis may cause death in up to 4% of cases. Guidelines for the treatment of acute constipation and for enema administration are urgently needed.

Niv, Galia; Grinberg, Tamar; Dickman, Ram; Wasserberg, Nir; Niv, Yaron

2013-01-01

48

The antegrade continence enema procedure and total anorectal reconstruction  

PubMed Central

Patients may present with anal incontinence (AI) following repair of a congenital anorectal anomaly years previously, or require total anorectal reconstruction (TAR) following radical rectal extirpation, most commonly for rectal cancer. Others may require removal of their colostomy following sphincter excision for Fournier's gangrene, or in cases of severe perineal trauma. Most of the data pertaining to antegrade continence enema (the ACE or Malone procedure) comes from the pediatric literature in the management of children with AI, but also with supervening chronic constipation, where the quality of life and compliance with this technique appears superior to retrograde colonic washouts. Total anorectal reconstruction requires an anatomical or physical supplement to the performance of a perineal colostomy, which may include an extrinsic muscle interposition (which may or may not be ‘dynamized'), construction of a neorectal reservoir, implantation of an incremental artificial bowel sphincter or creation of a terminal, smooth-muscle neosphincter. The advantages and disadvantages of these techniques and their outcome are presented here.

Zbar, Andrew P.

2014-01-01

49

Beta barium borate (BBO)  

Microsoft Academic Search

The paper contains a review of crystallographic, optical and nonlinear optical properties of beta barium borate (ß-BaB2O4 or BBO) crystal and presents a description of its typical applications in nonlinear optics and quantum electronics.

D. N. Nikogosyan

1991-01-01

50

Controlling barium sulfate  

Microsoft Academic Search

Even though for several years success has been realized in controlling barium sulfate scale deposition in relatively shallow, low pressure oil wells--by squeezing an organic phosphonate scale inhibitor into the producing zone--barium sulfate scale depositon in deep, high pressure\\/high temperature wells usually meant an expensive workover operation. A case history of a deep (16,000 ft) well in St. Mary Parish,

Greenley

2009-01-01

51

Plasma prednisolone levels after administration of prednisolone-21-phosphate as a retention enema in colitis.  

PubMed Central

A competitive protein-binding assay was used to measure plasma prednisolone levels after administration of prednisolone-21-phosphate retention enemas to seven patients with colitis. Prednisolone appeared in the plasma of all patients after the enema, and concentrations rose to a peak within three hours. In five of the patients plasma prednisolone levels were also measured after the same dose of prednisolone by mouth. Although in individual patients the plasma levels achieved by enema were often quite different from those achieved by mouth, overall the levels achieved by each mode of administration were of a similar order. These findings suggest that 20 mg prednisolone given by retention enema may well exert a systemic effect.

Powell-Tuck, J; Lennard-Jones, J E; May, C S; Wilson, C G; Paterson, J W

1976-01-01

52

Antegrade continence enema for the treatment of neurogenic constipation and fecal incontinence after spinal cord injury  

Microsoft Academic Search

Objective: To describe the effects of an antegrade continence enema stoma formed in a paraplegic man with intractable constipation and fecal incontinence.Design: Case report.Setting: Spinal cord injury unit, Veterans Affairs hospital.Participants: Spinal cord injury (SCI) patient with T12 paraplegia.Intervention: Surgical formation of antegrade continence enema stoma.Main Outcome Measures: Time of bowel program care, ease of fecal elimination, safety of procedure.Results:

Claire C. Yang; Steven A. Stiens

2000-01-01

53

Fatal Hypermagnesemia Caused by an Epsom Salt Enema: A Case Illustration  

Microsoft Academic Search

The authors describe a case of fatal hypermagnesemia caused by an Epsom salt enema. A 7-year-old male presented with cardiac arrest and was found to have a serum magnesium level of 41.2 mg\\/dL (33.9 mEq\\/L) after having received an Epsom salt enema earlier that day. The medical history of Epsom salt, the common causes and symptoms of hypermagnesemia, and the

Nancy M. Tofil; Kim W. Benner; Margaret K. Winkler

2005-01-01

54

Observed Barium Emission Rates  

NASA Technical Reports Server (NTRS)

The barium releases from the CRRES satellite have provided an opportunity for verifying theoretically calculated barium ion and neutral emission rates. Spectra of the five Caribbean releases in the summer of 1991 were taken with a spectrograph on board a U.S. Air Force jet aircraft. Because the line of sight release densities are not known, only relative rates could be obtained. The observed relative rates agree well with the theoretically calculated rates and, together with other observations, confirm the earlier detailed theoretical emission rates. The calculated emission rates can thus with good accuracy be used with photometric observations. It has been postulated that charge exchange between neutral barium and oxygen ions represents a significant source for ionization. If so. it should be associated with emissions at 4957.15 A and 5013.00 A, but these emissions were not detected.

Stenbaek-Nielsen, H. C.; Wescott, E. M.; Hallinan, T. J.

1993-01-01

55

Infection of Aedes albopictus with Chikungunya Virus Rectally Administered by Enema  

PubMed Central

Abstract Chikungunya virus (CHIKV) is an alphavirus transmitted by Aedes albopictus and Aedes aegypti mosquitoes in tropical areas of Africa, Asia, and the islands of the Indian Ocean. In 2007 and 2009, CHIKV was transmitted outside these tropical areas and caused geographically localized infections in people in Italy and France. To temporally and spatially characterize CHIKV infection of Ae. albopictus midguts, a comparison of viral distribution in mosquitoes infected per os or by enema was conducted. Ae. albopictus infected with CHIKV LR 5? green fluorescent protein (GFP) at a titer 106.95 tissue culture infective dose50 (TCID50)/mL, were collected and analyzed for virus dissemination by visualizing GFP expression and titration up to 14 days post inoculation (dpi). Additionally, midguts were dissected from the mosquitoes and imaged by fluorescence microscopy for comparison of midgut infection patterns between orally- and enema-infected mosquitoes. When virus was delivered via enema, the anterior midgut appeared more readily infected by 3?dpi, with increased GFP presentation observed in this same location of the midgut at 7 and 14?dpi when compared to orally-infected mosquitoes. This work demonstrates that enema delivery of virus is a viable technique for use of mosquito infection. Enema injection of mosquitoes may be an alternative to intrathoracic inoculation because the enema delivery more closely models natural infection and neither compromises midgut integrity nor involves a wound that can induce immune responses. Furthermore, unlike intrathoracic delivery, the enema does not bypass midgut barriers to infect tissues artificially in the hemocoel of the mosquito.

Ziegler, Sarah A.; Huang, Yan-Jang Scott; McAuley, Alex J.; Vanlandingham, Dana L.; Klowden, Marc J.; Spratt, Heidi; Davey, Robert A.; Higgs, Stephen

2013-01-01

56

Superconductivity in barium fulleride  

NASA Astrophysics Data System (ADS)

The intercalation of fulleride with barium is reported. A pure body-centered cubic phase with a lattice constant of 11.171 A is realized near a stoichiometry of Ba6C60. This phase is also superconducting, suggesting that the mechanism of superconductivity is related to an intrinsic property of the C60 molecules, rather than the external coordination number.

Kortan, A. R.; Kopylov, N.; Glarum, S.; Gyorgy, E. M.; Ramirez, A. P.; Fleming, R. M.; Zhou, O.; Thiel, F. A.; Trevor, P. L.; Haddon, R. C.

1992-12-01

57

Semiconducting barium titanate  

Microsoft Academic Search

Barium titanate, which is well known as a basic ferroelectric material, is also of interest when doped because of the interaction between semiconductivity and ferroelectricity. The resistance of blocking layers at surfaces and grain-boundaries is governed mainly by the ferroelectric properties, so that a resistance jump of four decades is observed on heating above the Curie temperature. A survey of

W. Heywang

1971-01-01

58

Ultrasound Guided Reduction of an Ileocolic Intussusception by a Hydrostatic Method by Using Normal Saline Enema in Paediatric Patients: A Study of 30 Cases  

PubMed Central

Introduction The conventional hydrostatic reduction of an intussusception with barium enema or the pneumatic reduction of an intussusception is associated with considerable ionizing radiations and a risk of perforation; while the hydrostatic reduction of an intussusception under ultrasound guidance is a very safe method because the whole procedure is visualized with real time ultrasound. Also, being a non-invasive method with a high success rate, this procedure has emerged as a useful alternative to a surgical intervention. Aim The aim of this study was to evaluate the role of ultrasound and colour Doppler studies for the guidance of the hydrostatic reduction of a childhood intussusception by using normal saline. Method Among 41 children who were evaluated with ultrasonography for the confirmation of the presence of intussusceptions, hydrostatic reduction of intussusception were performed under a sonographic guidance in 30 patients, whereas 11 patients were excluded due to clinical contraindications. Results This disease was observed mostly at the ages of 6 months to 24 months. In 80% of the patients, there was a recent history of gastroenteritis and 40 % had a history of common cold. The most common site of the intussusception was the transverse colon near the hepatic flexor of the colon (90%), with a mean duration of 22.1±17.3 hours. The overall rate of a successful reduction was 87% and the mean reduction time was 14 minutes. None of the cases showed recurrence within 24 hrs. No complications were observed. Conclusion We conclude that ultrasound with colour Doppler study is very useful for the diagnosis of intussusceptions, as well as for guided hydrostatic reductions by using normal saline enema. This is an optimal, simple, and a safe procedure for the treatment of intussusceptions in paediatric patients.

Digant, Shastri Mona; Rucha, Seth; Eke, Dessai

2012-01-01

59

Colonic spasm and pseudo-obstruction in an elongated colon secondary to physical exertion: diagnosis by stress barium enema  

Microsoft Academic Search

Anatomic and functional abnormalities of the colon are known to cause a variety of abdominal complaints, including constipation, diarrhea, and pain. We describe a patient with dolichocolon (elongated colon) with transient spasm (pseudo-obstruction) associated with exertion. The diagnosis in this case rested with a novel approach and less invasive evaluation of the colon.

John M McMahon; Edgar S Underwood; William E Kirby

1999-01-01

60

Development of In Situ Gelling and Bio Adhesive 5-Fluorouracil Enema  

PubMed Central

In this study, a novel 5-Fluorouracil (5-FU) enema with good bio adhesion and temperature sensitivity was developed using in situ gelling technology. The preparation was formulated as a free-flowing liquid before use, while a layer of gel film was quickly formed when administered in the rectum, with a large contact surface area. It also demonstrated good biocompatibility, appropriate gel strength and bio adhesive force with excellent adhesion to rectal mucosa and prolonged action time, allowing more effective drug absorption and diffusion to surrounding tissues. Poloxamer 407 and poloxamer 188 were applied to adjust the gelling temperature. With the addition of carbopol and polycarbophil (bio adhesive substances), the solubility of 5-FU and gel strength increased, the temperature of gelation and the surface area of drug contact on mucous epithelium decreased. Decreased adhesive force between the preparation and the mucous membrane of the rectum was demonstrated with improving carbopol and polycarbophil’s concentration. In vitro release demonstrated that 5-FU in situ gelling enema with different bases had a rapid and almost complete drug release. We used an optimized formulation of P407/P188/polycarbophil/5-FU (17/2.5/0.2/1.0) for animal experiments. The result showed that the drug evenly covered the surface of the rectum and there was no leakage in 6 hours. The in situ gelling enema showed significantly higher rectal tissue levels of 5-FU compared with suppository and intravenous administration, indicating that 5-FU could be well absorbed due to the enlarged releasing area, longer retention time and larger amount of dissolved active ingredients. Systemically, 5-FU levels in the enema group were similar to those in the suppository group and significantly lower than the intravenous group. The enema was not associated with morphological damage to rectal tissue. These results suggest that the bio adhesive and in situ gelling enema could be a more effective rectal delivery system of 5-FU.

Wang, Lu-Lu; Zheng, Wen-Sheng; Chen, Shao-Hua; Fang, Xia-Qin

2013-01-01

61

Perforations of the rectosigmoid colon induced by cleansing enema: CT findings in 14 patients  

Microsoft Academic Search

Background: We report the computed tomographic (CT) features of colorectal perforations caused by cleansing enema.\\u000a \\u000a \\u000a \\u000a \\u000a Methods: We reviewed the medical records and CT studies of all patients with colorectal perforations caused by a cleansing enema.\\u000a \\u000a \\u000a \\u000a \\u000a Results: Fourteen patients (10 men, four women; average age = 80 years) were included in the study. The most common presenting symptoms\\u000a were severe abdominal

G. Gayer; R. Zissin; S. Apter; A. Oscadchy; M. Hertz

2002-01-01

62

75 FR 33824 - Barium Chloride From China  

Federal Register 2010, 2011, 2012, 2013

...No. 731-TA-149 (Third Review)] Barium Chloride From China Determination On the...revocation of the antidumping duty order on barium chloride from China would be likely to...Publication 4157 (June 2010), entitled Barium Chloride from China: Investigation...

2010-06-15

63

75 FR 19657 - Barium Chloride From China  

Federal Register 2010, 2011, 2012, 2013

...No. 731-TA-149 (Third Review)] Barium Chloride From China AGENCY: United States...concerning the antidumping duty order on barium chloride from China...revocation of the antidumping duty order on barium chloride from China would be likely...

2010-04-15

64

Properties of Semiconductive Barium Titanates  

Microsoft Academic Search

The resistivity of barium titanate which is usually of the order of 109˜1012 ohm-cm, may be remarkably reduced with suitable control in valency. The valency-controlled barium titanate, whose resistivity is of the order of 10˜104 ohm-cm at room temperature, shows anomalous positive character in the temperature dependency of the resistivity. For example, the resistivity of barium titanate containing 0.1 mol.

Osamu Saburi

1959-01-01

65

Optimized photorefractive barium titanate  

Microsoft Academic Search

The goal of this research program was to investigate new and modified crystal-growth techniques that would lead to high-optical-quality BaTiO3 with increased photorefractive speed and sensitivity. The research program consisted of four parts: (1) feed material purification; (2) crystal growth by the top-seeded-solution technique as well as by a barium borate flux technique; (3) new furnace design studies; and (4)

Cardinal Warde; Hans P. Jenssen

1992-01-01

66

Drug complications in outpatients  

Microsoft Academic Search

OBJECTIVE: Outpatient drug complications have not been well studied. We sought to assess the incidence and characteristics of outpatient\\u000a drug complications, identify their clinical and nonclinical correlates, and evaluate their impact on patient satisfaction.\\u000a \\u000a \\u000a DESIGN: Retrospective chart reviews and patient surveys.\\u000a \\u000a \\u000a \\u000a \\u000a SETTING: Eleven Boston-area ambulatory clinics.\\u000a \\u000a \\u000a \\u000a \\u000a PATIENTS: We randomly selected 2,248 outpatients, 20 to 75 years old.\\u000a \\u000a \\u000a \\u000a \\u000a MEASUREMENTS AND MAIN

Tejal K. Gandhi; Helen R. Burstin; E. Francis Cook; Ann L. Puopolo; Jennifer S. Haas; Troyen A. Brennan; David W. Bates

2000-01-01

67

Successful treatment of ileocolic intussusception with air enema reduction in an adult patient.  

PubMed

Intussusception is a rare condition in adults, representing only 1% of all bowel obstructions. In adult cases, operative explorations are recommended to treat the bowel obstruction and to diagnose underlying diseases. The objective of the current case report was to describe the successful treatment of ileocolic intussusception with air enema reduction in an adult patient. A previously healthy 21-year-old woman had a 20-hour history of colicky abdominal pain and vomiting and was diagnosed as having idiopathic ileocolic intussusception by abdominal computed tomography. We treated the patient with air enema reduction under fluoroscopic guidance instead of an operative procedure. She received oxygen and intravenous midazolam to provide some degree of pain relief. Air was carefully pumped manually into the rectum, and the air pressure was monitored with a manometer. Because of air leakage from the rectum through the void to the outside the body, we continued to provide air to maintain the air pressure between 40 and 60 mm Hg. Three minutes after initiation of the air enema, when the patient experienced increasing abdominal pain and vomiting, the pressure was temporarily increased to greater than 100 mm Hg, and the air reached the terminal ileum. We considered the reduction successful and confirmed it with an abdominal ultrasound examination. We believe that air enema reduction is effective for treating idiopathic intussusception within 24 hours of symptom onset in young, previously healthy adult patients. PMID:24332898

Matsui, Satoshi; Kanemura, Takashi; Yokouchi, Yukako; Kamiichi, Hideo; Kiriu, Nobuaki; Koike, Yuji

2014-05-01

68

Utility of hospital admission after successful enema reduction of ileocolic intussusception  

Microsoft Academic Search

BackgroundIn-hospital observation of 24 to 48 hours has been the standard practice after successful enema reduction (ER) of ileocolic intussusceptions, but this practice has not been validated. We evaluated retrospectively the safety of short-term emergency department observation.

Ayman Al-Jazaeri; Salam Yazbeck; Denis Filiatrault; Marianne Beaudin; Mohammad Emran; Andreana Bütter

2006-01-01

69

Barium peritonitis in small animals.  

PubMed

Barium peritonitis is extremely rare, but is difficult to treat and may be life-threatening. Barium suspension leakage from the gastrointestinal tract into the abdominal cavity has a time-dependent and synergistically deleterious effect in patients who have generalized bacterial peritonitis. The severity of barium peritonitis is dependent on the quantity of barium in the abdominal cavity. Barium sulfate leakage results in hypovolemia and hypoproteinemia by worsening the exudation of extracellular fluid and albumin. Abdominal fluid analysis is a useful and efficient method to diagnose barium peritonitis. Serial radiographs may not be a reliable or timely diagnostic technique. Initial aggressive fluid resuscitation and empirical broad-spectrum antibiotic treatment should be instituted promptly, followed quickly by celiotomy. During exploratory surgical intervention, copious irrigation and direct wiping with gauze are employed to remove as much barium as possible. Omentectomy should be considered when needed to expedite barium removal. Despite aggressive medical and surgical treatments, postoperative prognosis is guarded to poor due to complications, such as acute vascular shock, sepsis, diffuse peritonitis, hypoproteninemia, electrolyte imbalance, cardiac arrest, small bowel obstruction related to progression of granulomas and adhesions in the abdominal cavity. Therefore, intensive postoperative monitoring and prompt intervention are necessary to maximize chances for a positive outcome. For those that do survive, small bowel obstruction is a potential consequence due to progression of abdominal adhesions. PMID:24430662

Ko, Jae Jin; Mann, F A Tony

2014-06-01

70

Barium Peritonitis in Small Animals  

PubMed Central

ABSTRACT Barium peritonitis is extremely rare, but is difficult to treat and may be life-threatening. Barium suspension leakage from the gastrointestinal tract into the abdominal cavity has a time-dependent and synergistically deleterious effect in patients who have generalized bacterial peritonitis. The severity of barium peritonitis is dependent on the quantity of barium in the abdominal cavity. Barium sulfate leakage results in hypovolemia and hypoproteinemia by worsening the exudation of extracellular fluid and albumin. Abdominal fluid analysis is a useful and efficient method to diagnose barium peritonitis. Serial radiographs may not be a reliable or timely diagnostic technique. Initial aggressive fluid resuscitation and empirical broad-spectrum antibiotic treatment should be instituted promptly, followed quickly by celiotomy. During exploratory surgical intervention, copious irrigation and direct wiping with gauze are employed to remove as much barium as possible. Omentectomy should be considered when needed to expedite barium removal. Despite aggressive medical and surgical treatments, postoperative prognosis is guarded to poor due to complications, such as acute vascular shock, sepsis, diffuse peritonitis, hypoproteninemia, electrolyte imbalance, cardiac arrest, small bowel obstruction related to progression of granulomas and adhesions in the abdominal cavity. Therefore, intensive postoperative monitoring and prompt intervention are necessary to maximize chances for a positive outcome. For those that do survive, small bowel obstruction is a potential consequence due to progression of abdominal adhesions.

KO, Jae Jin; MANN, F. A. (Tony)

2014-01-01

71

Does uncomplicated diverticular disease produce symptoms?  

Microsoft Academic Search

A questionnaire dealing with bowel symptoms was administered to 97 outpatients referred for air-contrast barium enema. Subsequenlly, the barium enema was interpreted by a radiologist who did not know the results of the questionnaire. Forty-nine had normal x-rays, and 27 had uncomplicated diverticular disease. Weight loss, rectal bleeding, abdominal pain, and pain at night were as common in those with

W. Grant Thompson; Dilip G. Patel; Hardy Tao; Rama C. Nair

1982-01-01

72

Barium uranyl diphosphonates  

NASA Astrophysics Data System (ADS)

Three Ba2+/UO22+ methylenediphosphonates have been prepared from mild hydrothermal treatment of uranium trioxide, methylendiphosphonic acid (C1P2) with barium hydroxide octahydrate, barium iodate monohydrate, and small aliquots of HF at 200 °C. These compounds, Ba[UO2[CH2(PO3)2]·1.4H2O (Ba-1), Ba3[(UO2)4(CH2(PO3)2)2F6]·6H2O (Ba-2), and Ba2[(UO2)2(CH2(PO3)2)F4]·5.75H2O (Ba-3) all adopt layered structures based upon linear uranyl groups and disphosphonate molecules. Ba-2 and Ba-3 are similar in that they both have UO5F2 pentagonal bipyramids that are bridged and chelated by the diphosphonate moiety into a two-dimensional zigzag anionic sheet (Ba-2) and a one-dimensional ribbon anionic chain (Ba-3). Ba-1, has a single crystallographically unique uranium metal center where the C1P2 ligand solely bridges to form [UO2[CH2(PO3)2]2- sheets. The interlayer space of the structures is occupied by Ba2+, which, along with the fluoride ion, mediates the structure formed and maintains overall charge balance.

Nelson, Anna-Gay D.; Alekseev, Evgeny V.; Ewing, Rodney C.; Albrecht-Schmitt, Thomas E.

2012-08-01

73

Anaphylaxis to carrageenan: A pseudo–latex allergy  

Microsoft Academic Search

Background: Anaphylactic reactions during a barium enema have been attributed to allergy to latex on the barium enema device. The observation of anaphylaxis during barium enema without latex exposure or latex allergy led to the performance of an allergy skin test to the barium enema solution. Methods: Individual components of the barium enema solution were obtained for double-blind skin testing.

Susan M. Tarlo; Jerry Dolovich; Charles Listgarten

1995-01-01

74

Outpatient intravenous antibiotic therapy.  

PubMed

Outpatient intravenous antibiotic therapy is a cost-effective modality to shorten hospital stays and provide continued care to patients with infections. The recent availability of tamper-proof pumps that can deliver multiple antibiotics on independently timed regimens will further expand the use of home intravenous antibiotics. Problems with reimbursement remain, and new classes of oral antibiotics may provide alternatives to parenteral medications. PMID:2801460

Brown, R B; Sands, M

1989-10-01

75

Outpatient Medical Records  

PubMed Central

Dissatisfied with some functional aspects of the problem-oriented medical records used by their medical group, a committee of member physicians redesigned their office charts. Applying techniques of systematic layout planning, employed regularly as a tool of industrial engineering, these clinicians devised what they feel to be outpatient document with unique features. The resulting product forms a cohesive unit, eliminates duplication and provides many medicolegal safeguards.

Cook, Galen B.

1977-01-01

76

Enema Use Among Men Who Have Sex with Men: A Behavioral Epidemiologic Study with Implications for HIV/STI Prevention.  

PubMed

Enema use or douching is a risk factor for HIV/STI in men who have sex with men (MSM). However, few studies have explored enema use practices. We examined the frequency of enema use, type of products used, and reasons to use and not to use before and after receptive anal sex in a large sample of MSM (N = 4,992) recruited from 16 U.S. cities. Through online surveys, we examined personal, behavioral, and environmental factors associated with enema use. Most (52 %) participants reported having douched at least once and 35 % reported douching within the last 3 months. While most (88 %) reported enema use before receptive anal sex, 28 % douched after receptive anal sex. Most participants (65 %) used water to douche, 24 % added salt, soap, and/or antibacterial products to water, and 30 % reported using commercially available products. Being a man of color, HIV-positive, diagnosed with an STI, identifying as "versatile" in sex, and having more than two unprotected sex partners were significantly associated with recent enema use. Douching behavior appears closely associated with HIV/STI risk. Douching with water may be a concern since it may increase HIV/STI infection by damaging the epithelium. Development and promotion of a non-damaging, non-water based enema specifically for use in anal sex are recommended. In addition, the seemingly contradictory recommendations that water-based lubricant is recommended for anal sex but water-based enemas are dangerous need to be reconciled into a single consistent message. PMID:24346864

Noor, Syed W; Rosser, B R Simon

2014-05-01

77

Discovery of the barium isotopes  

SciTech Connect

Thirty-eight barium isotopes have been observed so far and the discovery of these isotopes is discussed here. For each isotope a brief summary of the first refereed publication, including the production and identification method, is presented.

Shore, A.; Fritsch, A.; Ginepro, J.Q.; Heim, M.; Schuh, A. [National Superconducting Cyclotron Laboratory and Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824 (United States); Thoennessen, M., E-mail: thoennessen@nscl.msu.ed [National Superconducting Cyclotron Laboratory and Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824 (United States)

2010-11-15

78

Flow-through peritoneal dialysis in neonatal enema-induced hyperphosphatemia.  

PubMed

Fleet enemas are hypertonic solutions with an osmotic action and a high concentration of phosphate. When retained in the human body they have a great toxic potential, causing severe hydro-electrolyte disorders in children, especially in newborns. We report the case of a previously healthy 8-day-old newborn who needed neonatal intensive care treatment after the inadvertent administration of an osmotically active hypertonic phosphate enema. Taking into account that phosphate removal by peritoneal dialysis (PD) strongly depends on total dialysate turnover, we chose continuous flow PD (CFPD) as the treatment option, with a successful outcome. Clinical experience with this dialytic modality is limited to a few case reports in pediatric and adult patients. To the best of our knowledge, we report here the first description of CFPD in the setting of acute phosphate nephropathy in the neonatal period. The modality of PD described here has potential as an alternative management option as it is a highly efficient, methodologically simple, and low-cost method without any need for sophisticated equipment. Physicians and parents should be aware of the adverse effects of a hypertonic phosphate enema and should never use these medications in infants and newborns. PMID:20526851

Kostic, Dusan; Rodrigues, Andre Broggin Dutra; Leal, Antônio; Metran, Camila; Nagaiassu, Meire; Watanabe, Andréia; Ceccon, Maria Esther; Tannuri, Uenis; Koch, Vera Hermina

2010-10-01

79

Efficacy and Safety of Gwakhyangjeonggi-San Retention Enema in Normal Rats and Spontaneously Hypertensive Rats  

PubMed Central

The purpose of this study is to establish a protocol of retention-enema experiments and evaluate the antihypertensive effect and the safety of Gwakhyangjeonggi-san retention enema. Normal and spontaneously hypertensive rats (SHRs) were divided into treatment and control groups, respectively. We applied the Gwakhyangjeonggi-san extract by decoction and 0.9% NaCl in each group, estimated the blood pressure and body weight, and performed HPLC analysis. ALT, AST, BUN, and creatinine were examined. The systolic blood pressure within each group in normal rats differed significantly in time effect, and so did the diastolic blood pressure in the treatment group of normal rats. The systolic, diastolic, and mean blood pressure showed significant differences in group effect in the treatment group of the SHRs. The time effect of the body weight in both groups of normal rats differed significantly, so did group × time and time effects in both groups of SHRs. AST, ALT, BUN, and creatinine showed no significant difference between groups. We concluded that the Gwakhyangjeonggi-san retention enema has a hypotensive effect in normal rats within the regular range of blood pressure, but an antihypertensive effect in SHRs. Also, the intervention is safe and does not affect the liver and kidney functions in normal rats.

Song, Eunyoung; Lee, Euiju; Bu, Yongmin; Lee, Junhee; Shin, Seungwon; Yoo, Junghee; Park, Jaewoo

2013-01-01

80

Analysis of Barium Clouds. Volume I.  

National Technical Information Service (NTIS)

Several aspects of the analysis of barium ion clouds are presented including ion cloud modeling, comparison of radar and optical data, and correlation of data with theory. A quantitative model has been developed from which various properties of barium ion...

B. Kivel L. F. Cianciolo L. M. Linson S. Powers

1972-01-01

81

Solid-state barium-vapor detector  

Microsoft Academic Search

The need for electrical switching devices for use in high-temperature radioactive environments in space nuclear power systems has led to the development of the cesium-barium tacitron. Effective evaluation of electrically insulating joints for the barium-cesium tacitron requires a method for the in situ detection of barium vapor which may leak through the joint. A solid-state barium-vapor detector has been developed

Jeffrey W. Fergus; S. Hui

1995-01-01

82

Pharmacokinetics of Caffeine following a Single Administration of Coffee Enema versus Oral Coffee Consumption in Healthy Male Subjects.  

PubMed

The objective of this study was to determine the pharmacokinetics of caffeine after single administration of a coffee enema versus coffee consumed orally in healthy male subjects. The study design was an open-label, randomized two-phase crossover study. Eleven healthy subjects were randomly assigned either to receive 500?mL of coffee enema for 10 minutes or to consume 180?mL of ready-to-drink coffee beverage. After a washout period of at least 10 days, all the subjects were switched to receive the alternate coffee procedure. Blood samples were collected immediately before and at specific time points until 12 hours after coffee administration in each phase. The mean caffeine content in both the coffee solution prepared for the coffee enema and the ready-to-drink coffee beverage was not statistically different. The C max and AUC of caffeine obtained from the coffee enema were about 3.5 times significantly less than those of the coffee consumed orally, despite having slightly but statistically faster T max. The t 1/2 of caffeine obtained following both coffee procedures did not statistically differ. In summary, the relative bioavailability of caffeine obtained from the coffee enema was about 3.5 times significantly less than those of the coffee consumed orally. PMID:23533801

Teekachunhatean, Supanimit; Tosri, Nisanuch; Rojanasthien, Noppamas; Srichairatanakool, Somdet; Sangdee, Chaichan

2013-01-01

83

Pharmacokinetics of Caffeine following a Single Administration of Coffee Enema versus Oral Coffee Consumption in Healthy Male Subjects  

PubMed Central

The objective of this study was to determine the pharmacokinetics of caffeine after single administration of a coffee enema versus coffee consumed orally in healthy male subjects. The study design was an open-label, randomized two-phase crossover study. Eleven healthy subjects were randomly assigned either to receive 500?mL of coffee enema for 10 minutes or to consume 180?mL of ready-to-drink coffee beverage. After a washout period of at least 10 days, all the subjects were switched to receive the alternate coffee procedure. Blood samples were collected immediately before and at specific time points until 12 hours after coffee administration in each phase. The mean caffeine content in both the coffee solution prepared for the coffee enema and the ready-to-drink coffee beverage was not statistically different. The Cmax and AUC of caffeine obtained from the coffee enema were about 3.5 times significantly less than those of the coffee consumed orally, despite having slightly but statistically faster Tmax. The t1/2 of caffeine obtained following both coffee procedures did not statistically differ. In summary, the relative bioavailability of caffeine obtained from the coffee enema was about 3.5 times significantly less than those of the coffee consumed orally.

Tosri, Nisanuch; Rojanasthien, Noppamas; Srichairatanakool, Somdet; Sangdee, Chaichan

2013-01-01

84

The role of the Malone antegrade continence enema (MACE) in the management of myelodeysplatic patients.  

PubMed

Myelodysplasia is a congenital neural tube defect commonly affecting bladder and bowel function. Management of fecal incontinence is paramount to achieve patient independence and self-confidence. When conservative measures fail alternative invasive methods can be successfully applied. The Malone antegrade continence enema (MACE) was introduced in the late 1980's to treat spina bifida patients with fecal incontinence refractory to conservative management. Since its introduction, multiple successful variations have been described and its role has expanded. Indeed, the MACE has revolutionized the care of myelodysplastic patients, their bowel function, and ultimately their self image. PMID:21791795

Zamilpa, Ismael; Koyle, Martin A

2009-01-01

85

Single blind, randomised trial of efficacy and acceptability of oral Picolax versus self administered phosphate enema in bowel preparation for flexible sigmoidoscopy screening  

PubMed Central

Objective To compare the acceptability and efficacy of two methods of self administered bowel preparation for flexible sigmoidoscopy screening: a single phosphate enema and a single sachet of Picolax. Design Single blind, randomised trial. Setting Endoscopy units of two general hospitals. Participants 1442 men and women aged 55-64 years who had agreed to be screened by flexible sigmoidoscopy. Main outcome measures Attendance rates, compliance with allocated preparations, adverse effects, quality of bowel preparation, procedure time, and yield of neoplasia. Results Compliance with the enema was higher than with the Picolax (608 (84%) v 566 (79%); difference 6%, 95% confidence interval 2% to 10%). Almost half of those who refused Picolax used an enema at home. Wind, incontinence, and sleep disturbance were more frequent in the Picolax group than the enema group; bottom soreness was more frequent in the enema group. Around 30% (187) found the diet restriction required by Picolax difficult; 78% (471) found the enema easy to administer. The quality of preparation was better with the enema; the proportion of procedures complete to the descending colon was greater and the mean duration of the procedure was shorter. There was no significant difference in polyp detection rates. Conclusion A single phosphate enema self administered around one hour before leaving home is a more acceptable and effective method of preparing the distal bowel for flexible sigmoidoscopy than Picolax.

Atkin, Wendy S; Hart, Andrew; Edwards, Robert; Cook, Claire F; Wardle, Jane; McIntyre, Peter; Aubrey, Roger; Baron, Clare; Sutton, Stephen; Cuzick, Jack; Senapati, Asha; Northover, John M A

2000-01-01

86

Computer modelling of barium titanate  

Microsoft Academic Search

Barium titanate is an important material for both scientific and industrial applications. Much of the interest centres around its ferroelectric properties, since it is structurally the most simple in this class. In addition rare-earth doped ceramics are found to exhibit a very steep positive temperature coefficient of resistance (PTCR) above the Curie point. The theory of this PTCR effect is

G. V. Lewis; C. R. A. Catlow

1983-01-01

87

Recent Developments in Barium Borate,  

National Technical Information Service (NTIS)

The nonlinear optical properties of Beta-BaB2O4(beta barium borate) are demonstrated in the generation of second through fifth harmonics of 1.06-micrometer neodymium laser radiation, and in optical parametric oscillation pumped by 532-nm radiation. Beta-B...

C. Chen Y. X. Fan R. C. Eckardt R. L. Byer

1986-01-01

88

Satisfaction with the outpatient encounter  

Microsoft Academic Search

OBJECTIVE: To compare patients’ and physicians’ visit-specific satisfaction in an internal medicine outpatient setting, and to explain\\u000a their respective views.\\u000a \\u000a \\u000a DESIGN: Patients’ and physicians’ background characteristics were assessed prior to outpatient encounters. Immediately after the\\u000a encounter, both patients and physicians completed a questionnaire assessing satisfaction with the visit.\\u000a \\u000a \\u000a \\u000a \\u000a SETTING: The outpatient division of an academic teaching hospital.\\u000a \\u000a \\u000a \\u000a \\u000a PARTICIPANTS: Thirty residents

Linda C. Zandbelt; Ellen M. A. Smets; Frans J. Oort; Mieke H. Godfried

2004-01-01

89

Outpatient Management of Infective Endocarditis.  

PubMed

Because of unique host defense characteristics of the endocardium, successful therapy for infective endocarditis (IE) has necessitated bactericidal antimicrobial agents, generally administered in high doses for prolonged periods of time. This has required therapy in the hospital setting. However, in recent years, it has become apparent that outpatient therapy is feasible if appropriate agents can be administered at home, for example, using either home parenteral therapy or oral preparations. Over the past few decades, there has been a trend toward reducing inpatient reimbursement for various conditions, including serious infections. The decision to treat IE on an outpatient basis is made more easily if based on previous published experience. Published reports have concluded that outpatient therapy is more appropriate for "uncomplicated" IE caused by relatively susceptible microorganisms. The purpose of this paper is to review data describing the results of management of IE in the outpatient setting. PMID:11470021

Monteiro, Cheryl-Ann; Cobbs, C. Glenn

2001-08-01

90

A Geriatric Psychiatric Outpatient Project.  

National Technical Information Service (NTIS)

The project demonstrated the effectiveness of an outpatient clinic to serve older persons with emotional problems so as to prevent institutionalization. Basically, it attempted to redefine existing resources for the use of certain groups so as to be preve...

1970-01-01

91

Limitations in the CT Diagnosis of Acute Diverticulitis: Comparison of CT, Contrast Enema, and Pathologic Findings in 16 Patients  

Microsoft Academic Search

Pitfalls in CT diagnosis of acute diverticuhitis were investigated in 16 patients with the disease who had misleading or equivocal CT features. The CT appearance was corre- hated with contrast enemas (13 cases) and with surgical assessment and pathologic evaluation of resected specimens (12 cases). Limitations in the CT diagnosis were related to (1) marked thickening of the colonic wall,

Emil J. Balthazar; Alec Megibow; Roger A. Schinella; Richard Gordon

92

40 CFR 721.10011 - Barium calcium manganese strontium oxide.  

Code of Federal Regulations, 2013 CFR

...2013-07-01 2013-07-01 false Barium calcium manganese strontium oxide. 721.10011...Chemical Substances § 721.10011 Barium calcium manganese strontium oxide. (a...chemical substance identified as barium calcium manganese strontium oxide (PMN...

2013-07-01

93

40 CFR 721.10011 - Barium calcium manganese strontium oxide.  

Code of Federal Regulations, 2010 CFR

...2009-07-01 2009-07-01 false Barium calcium manganese strontium oxide. ...Chemical Substances § 721.10011 Barium calcium manganese strontium oxide. ...The chemical substance identified as barium calcium manganese strontium...

2009-07-01

94

75 FR 20625 - Barium Chloride From China  

Federal Register 2010, 2011, 2012, 2013

...INTERNATIONAL TRADE COMMISSION [Investigation No. 731-TA-149 (Third Review)] Barium Chloride From China AGENCY: United States International Trade Commission. ACTION: Revised schedule for the subject...

2010-04-20

95

[Antegrade colonic enema is a choice for the treatment of faecal incontinence and constipation].  

PubMed

Faecal incontinence and constipation cannot always be treated successfully by conservative or surgical methods. In these cases regular retrograde colonic enema can reduce the symptoms of the patients and can establish pseudocontinence. The authors present a method of colon cleaning which has been used successfully. The method was introduced in clinical practice by Malone in 1990. The antegrade enema is administered through the appendicostomy. In cases, where the appendectomy was performed earlier, a neoappendix was created from the coecal wall and used for the irrigation of the colon. During procedure the patients injected tap water (300-450 ml) through the (neo-)appendicostomy with a thin catheter. After a short time period this was followed by passing of the stool. The procedure was performed on twelve patients, five female, and seven male patients (mean age: 39.2 years). The indications for the procedure were the following: faecal incontinence induced by denervation of the pelvic floor in three patients, sphincter trauma in two patients and congenital sphincter malformation in two cases. In addition, combined symptoms of faecal incontinence and constipation caused by pelvic floor denervation in three patients. Finally, intractable constipation was the reason in two patients. After irrigation, the stool was passed, but the functional result was rather variable. Eight out of twelve patients were satisfied with the result, two patients reported improvement in the constipation, but it failed in one case. In another case, the appendicostomy could not have been used due to surgical complications. The stricture of the (neo-)appendicostomy was observed in two cases. Significant reflux occurred only in one case. Conclusion: after adequate patient selection this method can be applied with success. PMID:17931998

Lestár, Béla; Polányi, Csaba; Bihari, László; Garcia, Jose; Vörös, Attila

2007-08-01

96

Calcite/barium fluoride ultraviolet polarizing prism  

NASA Astrophysics Data System (ADS)

A calcite/barium fluoride polarizing prism gives improved ultraviolet transmittance compared with a calcite/calcite ultraviolet polarizing prism. Beam spatial distortion is transmitted because of variations in absorption (and path length) in the calcite half of the calcite/barium fluoride prism.

Wu, Fuquan; Li, Guohua; Huang, Jiayin; Yu, Dehong

1995-07-01

97

Barium granuloma of the transverse colon.  

PubMed Central

A case of barium sulphate granuloma of the transverse colon following gunshot wounds to the abdomen has been described. Scanning electron microscopy with electron probe microanalysis was used to confirm the presence of barium sulphate and the absence of lead or other elements related to the gunshot wounds. Images Fig. 1 Fig. 2 Fig. 3 Fig. 4

McKee, P. H.; Cameron, C. H.

1978-01-01

98

REMOVAL OF BARIUM AND RADIUM FROM GROUNDWATER  

EPA Science Inventory

A research project was undertaken to investigate processes for removing barium and radium from drinking water. Special emphasis was placed on ion exchange processes that can be used without adding large concentrations of sodium to the water. The wastes from radium and barium remo...

99

Outpatient clinics without the paperwork.  

PubMed

Chicago's MacNeal Health Network made several smart moves to get physician buy-in for a computer-based patient record system in its outpatient clinics. It didn't take long before paper-based patient records all but disappeared. PMID:10167512

Hagland, M

1997-05-01

100

New barium ferrite particles: Spherical shape  

NASA Astrophysics Data System (ADS)

Pure and ZnTi-doped spherical barium ferrite particles were prepared using two different methods: semicoprecipitation and ultrasonic spray pyrolysis. The ultrasonic spray pyrolysis method was more effective in controlling particle shape. Particle size was in between 0.27 and 0.3 ?m. Coercivity and saturation magnetization were in the range of 1000 to 5000 Oe and 49 to 53 emu/g, respectively. Crystallization of amorphous Ba-Fe-O spherical precursors occurs at a lower temperature than Ba-Fe-Zn-Ti-O precursors. ?M measurement shows that magnetic interaction in spherical barium ferrite tape is weaker than hexagonal platelet barium ferrite.

Hong, Y. K.; Jung, H. S.

1999-04-01

101

[Percutaneous liver biopsy in outpatients].  

PubMed

We studied prospectively 44 patients with diffuse liver disease. We performed percutaneous liver biopsy in these outpatients. They were required to be in absolute response during the following 4-6 hours after the biopsy was completed. After that period, they could go home and have a relative rest for the remnant day. These patients were followed by clinical evaluation and by real time abdominal ultrasound. We found some complications: Transitory arterial hypotension, pain in the site of puncture, hepatic hematomas. Only one of the patients with hematomas required hospitalization during 24 hours. The mortality was 0%. According to our experience, the hepatic biopsy is a procedure that can be performed in outpatients with a wide margin of security. An important point of view to consider is the economic advantage since it means a decrease in costs by each hepatic biopsy accomplished considering the cost/day of hospitalization. PMID:2152257

Ocampo, M E; Piñero, R; Urquiola, G; Marsicano, L; Salomón, A; Poleo, J R

1990-01-01

102

Outpatient parenteral antimicrobial therapy today.  

PubMed

Since its introduction in the 1970s, outpatient parenteral antimicrobial therapy (OPAT) has become a standard modality for patients with many infections requiring long-term intravenous antibiotic therapy. Delivery of OPAT may occur in physicians' offices, hospital clinics, specialized infusion centers, and currently most often, patient's homes, often self-administered. Patients are selected for OPAT by physicians familiar with both the course of their infections, their personal suitability for outpatient care, and the availability of reimbursement. OPAT is reportedly safe, effective, practical, and cost-effective. An OPAT Outcomes Registry contains information from >11,000 antibiotic courses administered from 1997 through 2000. Although a number of studies are purported to analyze the economic impact of OPAT on health care, a comprehensive, clinical outcomes-based pharmacoeconomic analysis, as described here, has, to our knowledge, yet to be done. PMID:20731577

Paladino, Joseph A; Poretz, Donald

2010-09-15

103

[Outpatient ESWL in 500 kidneys].  

PubMed

Between March 1989 and January 1992, 600 cases (636 kidneys) with upper urinary tract stones were treated with ESWL, using a Lithostar. Of these, 78.6% were carried out in our outpatient service, and in the last two years approximately 90% of cases have been treated as outpatient. We evaluated first 500 kidneys, treated with ESWL as outpatient. There were 481 cases involving 500 kidneys (19 bilateral cases). The ages of the 367 men and 114 women ranged from 16 to 77 years. There were 227 kidney stones and 273 ureter stones. Most of the stones were less than 20 mm. The average number of sessions and shock waves for each patient were 1.4 times and 6,988 waves, respectively. While 74% of the patients could be treated in only one session, 9% of them needed 3 sessions or more. Auxiliary measures were needed in 23 cases (D-J stent insertion in 5 cases and ureteral catheterization in 18 cases) and 474 cases (94.8%) were treated by in-situ procedures. At 3 months after treatment, 470 cases were evaluated and the stone-free rates of kidney stones and ureter stones were 70.3% and 84.5%, respectively with an overall stone-free rate of 78.1%. With regard to complications, the rate of the clinic visit because of pain after treatment was observed in 4.6% and higher than 38 degrees C in 2.5%. However, no serious perioperative complications occurred. From these results, outpatient ESWL was considered to be safe and efficient without serious complications.(ABSTRACT TRUNCATED AT 250 WORDS) PMID:8258932

Mamiya, Y; Hirata, T; Tochimoto, M; Narita, K; Akiya, T; Furugen, N; Ishibashi, K; Ogawa, M; Miki, M

1993-11-01

104

The "revolution" in outpatient care.  

PubMed

Although the concept of outpatient care is not a new one, the growth in ambulatory facilities has revolutionized medical care in the United States. The growth in ambulatory surgery centers, imaging centers, and cancer centers in Florida is explored in detail. With the many changes forthcoming in health care, ambulatory care will play an increasing role in delivering good health care at a reasonable cost. PMID:10143480

Paryani, S; Scott, W; Wells, J; Johnson, D; Chobe, R; Schoeppel, S; Kuruvilla, A; Deshmukh, A

1995-07-01

105

Rectal perforations and fistulae secondary to a glycerin enema: Closure by over-the-scope-clip  

PubMed Central

Rectal perforations due to glycerin enemas (GE) typically occur when the patient is in a seated or lordotic standing position. Once the perforation occurs and peritonitis results, death is usually inevitable. We describe two cases of rectal perforation and fistula caused by a GE. An 88-year-old woman presented with a large rectal perforation and a fistula just after receiving a GE. Her case was further complicated by an abscess in the right rectal wall. The second patient was a 78-year-old woman who suffered from a rectovesical fistula after a GE. In both cases, we performed direct endoscopic abscess lavage with a saline solution and closed the fistula using an over-the-scope-clip (OTSC) procedure. These procedures resulted in dramatic improvement in both patients. Direct endoscopic lavage and OTSC closure are very useful for pararectal abscess lavage and fistula closure, respectively, in elderly patients who are in poor general condition. Our two cases are the first reports of the successful endoscopic closure of fistulae using double OTSCs after endoscopic lavage of the debris and an abscess of the rectum secondary to a GE.

Mori, Hirohito; Kobara, Hideki; Fujihara, Shintaro; Nishiyama, Noriko; Kobayashi, Mitsuyoshi; Masaki, Tsutomu; Izuishi, Kunihiko; Suzuki, Yasuyuki

2012-01-01

106

The efficacy of intraoperative methylene blue enemas to assess the integrity of a colonic anastomosis  

PubMed Central

Background Intraoperative testing of colonic anastomoses is routine in assuring anastamotic integrity. We sought to determine the efficacy of the methylene blue enema (MBE) as an intraoperative test for anastomotic leaks. Methods This study is a retrospective review of consecutive colonic operations performed from January 2001 to December 2004 in a community hospital setting by a general surgical group that uses the MBE exclusively. All operations featuring a colonic anastomosis and an intraoperative MBE were studied (n = 229). Intraoperative MBE via a rectal tube was used as the diagnostic test. Intraoperative leak (IOL) rate and clinically significant postoperative leak (POL) rate were the outcome measures. Results The IOL rate was 4.5% for proximal anastomoses, 8% for distal anastomoses, and 7% of total anastomoses. The POL rate was 3% of anastomosis. There were no other testing methods employed. There were no POLs in cases where an IOL led to concomitant intraoperative repair. POL rate for proximal anastomosis was 0.8% and for distal 3%, for stapled 1% and hand sewn 5%. Conclusion MBE IOL rate is comparable to published IOL rates for other methods of intraoperative testing. The MBE can be applied to proximal and distal anastomosis. Patients who were found to have an IOL, and underwent immediate repair, did not develop a clinical POL.

Smith, Stanton; McGeehin, William; Kozol, Robert A; Giles, David

2007-01-01

107

An experimental study to evaluate the pharmacokinetic aspect of Lekhana Basti (Emaciating/ Desiccating Medicated Enema).  

PubMed

Basti therapy is used widely for treatment of various diseases in the field of Ayurveda with several proven clinical applications, however; the exact mechanism through which the benefits are obtained are yet to be ascertained in the light of the contemporary developments in clinical science. It is also not clear that when administered Basti the active principles in the formulation gain entry in to the systemic circulation or not. The present study was planned to acquire some preliminary data with regards to the absorption of phytochemical constituents of the formulations when administered in the form of Basti. Gallic acid was used as marker compound and it's absorption in systemic circulation was assessed using high performance liquid chromatography. Gallic acid present in Lekhana Basti (Emaciating/ Desiccating Medicated Enema) was found to get absorbed in to systemic circulation. Maximum concentration in serum was seen in the animal which received Lekhana Basti with Prakshepa Dravya ( Catalytic Adjuvant) in comparison to animal which received Lekhana Basti without Prakshepa Dravya. Area under curve in chromatogram was also more in animal which received Lekhana Basti with Prakshepa Dravya. From primary evidence created by HPLC study it can be said that, phytochemicals of the Basti formulation do get absorbed in systemic circulation. PMID:23284203

Auti, Swapnil S; Ashok, B K; Thakar, Anup B; Shukla, V J; Ravishankar, B

2011-10-01

108

Photorefractive and Photochromic Effects in Barium Titanate.  

National Technical Information Service (NTIS)

Nominally undoped p-type Barium titanate was grown that exhibits interesting intensity dependent photorefractive and photochromic properties. When its photochromism is activated the absorption increases at the activating wavelength and there is a concurre...

C. Warde H. P. Jenssen J. Y. Chang M. H. Garrett T. M. Pollak

1992-01-01

109

Barium Isotopes in Single Presolar Grains  

NASA Technical Reports Server (NTRS)

Barium isotopic compositions of single presolar grains were measured by laser ablation laser resonant ionization mass spectrometry and the implications of the data for stellar processes are discussed. Additional information is contained in the original extended abstract.

Pellin, M. J.; Davis, A. M.; Savina, M. R.; Kashiv, Y.; Clayton, R. N.; Lewis, R. S.; Amari, S.

2001-01-01

110

Single-dose ceftriaxone, ornidazole, and povidone-iodine enema in elective left colectomy. A randomized multicenter controlled trial. The French Association for Surgical Research.  

PubMed

Patients undergoing elective left colectomy for colonic carcinoma or diverticulosis (n = 341) were randomly assigned to three groups. Patients in groups 1 (102 patients) and 2 (122 patients) had two 5% povidone-iodine enemas whereas those in group 3 (117 patients) had saline enemas. Groups 1 and 3 received 24-hour intravenous cefotaxime sodium and metronidazole hydrochloride. Group 2 received single injections of ceftriaxone sodium (1 g) and ornidazole (1 g). Senna concentrate was administered the evening before surgery. There was no statistically significant difference found between groups 1 and 2 concerning the number of infected patients (eight vs 11), anastomotic leakages (four vs four), extra-abdominal complications (32 vs 29), or infection-related deaths (one vs zero). Despite poorer tolerance, povidone-iodine enema was more effective than saline enemas, as there were less infected patients in group 1 (8%) or groups 1 + 2 (8.5%) than in group 3 (13%). Single-dose ceftriaxone-ornidazole combined with povidone-iodine enemas is effective against infective complications in elective left colonic surgery for carcinoma or diverticular disease. Single-dose antibiotic prophylaxis reduces costs and work for the nursing staff. PMID:8431124

Fingerhut, A; Hay, J M

1993-02-01

111

Can nutritional supplements and rectal enema be used as bowel cleansing for colonoscopy? - results of a randomized controlled pilot study.  

PubMed

Abstract Objective. Currently available preparations for colonoscopy have low tolerability and may cause fluid and electrolyte shifts. An alternative method of bowel cleansing is required. Material and methods. Preparation of the gut using oral nutritional supplements (ONS) and rectal enema was tested as an alternative method of bowel cleansing. During 2008-2012, patients were randomized to oral nutritional supplements (n = 27) for 5 days and rectal enema or polyethylene glycol (PEG) (n = 23) prior to colonoscopy. Blinded endoscopists rated the degree of bowel cleansing according to the Ottawa bowel preparation scale (OBS) (primary outcome). Tolerability of either preparation was also assessed (ClinicalTrials.gov. Identifier no: NCT00123456). Results. Due to a high rate of bowel cleansing failure among patients receiving ONS, the study was interrupted prematurely. Colonoscopies were incomplete due to stools in 6 of 27 patients in the ONS group compared to 1 of 23 in the PEG group (ns). The mean total OBS were 8.3 ± 3.3 and 5.3 ± 2.8, respectively (p = 0.002). Four patients (15%) in the ONS group and eight patients (35%) receiving PEG had an OBS score ?4 (good preparation) (ns). ONS was better tolerated than PEG with more patients reporting acceptable taste (27 of 27 [100%] vs. 15 of 23 [65%], p = 0.001), and fewer reporting difficulties with the intake (0 of 27 [0%] vs. 10 of 23 [43%], p < 0.001) and nausea (5 of 27 [19%] vs. 13 of 23 [57%], p < 0.008). Conclusions. For routine use, ONS with enema instead of traditional preparation for colonoscopy with PEG cannot be generally recommended. PMID:24495046

Gustafsson, Ulf O; Segelman, Josefin; Ljungqvist, Olle; Thorell, Anders; Nygren, Jonas

2014-04-01

112

The Effectiveness and Ethical Justification of Psychiatric Outpatient Commitment  

Microsoft Academic Search

Studies link involuntary outpatient commitment with improved patient outcomes, fueling debate on its ethical justification. This study compares inpatient utilization for committed outpatients in the 1990s with those who were not under outpatient civil commitment orders. Findings reveal committed outpatients had higher utilization of inpatient services and restraint episodes prior to their commitment compared with a control group. Committed outpatients

Guido R. Zanni; Paul F. Stavis

2007-01-01

113

Cytotoxicity of synthetic barium hydroxyapatite.  

PubMed

Barium hydroxyapatite (Ba10(PO4)6(OH)2, Ba-HAp) was synthesized by a wet method using Ba(OH)2.8H2O and (NH4)2HPO4 as starting materials. The Ba-HAp obtained had a Ba/P atomic ratio of 1.76 and contained CO3 groups. The Ba-HAp was sintered at 1073 K for 12 hours. The sintered Ba-HAp had a three point bending strength of 29 MPa and Young's modulus of 27 GPa. Cytotoxicity of the sintered bodies and particles was tested using L-cells. The sintered Ba-HAp showed no cytotoxicity, and the cells were closely in contact with the surfaces of sintered Ba-HAp. Morphological observation of the cell around the Ba-HAp particles also showed no cytotoxicity. However, cell growth was inhibited by Ca adsorption on the Ba-HAp particles. These results suggested that the Ba-HAp had no cytotoxicity and can be applied as a bioactive X-ray opaque material. PMID:9138651

Kikuchi, M; Yamazaki, A; Akao, M; Aoki, H

1996-01-01

114

Effect of Majja Basti (therapeutic enema) and Asthi Shrinkhala (Cissus quadrangularis) in the management of Osteoporosis (Asthi-Majjakshaya)  

PubMed Central

Osteoporosis is a systemic disorder that affects entire skeleton, which is a metabolic bone disease characterized by low bone mass and microarchitectural deterioration of the skeleton, leading to enhanced bone fragility and a consequent increase in fracture risk. In Ayurveda, it can be correlated with Asthi-Majjakshaya. Basti (therapeutic enema) is the prime therapy for Asthi related diseases and Asthi Shrinkhala (Cissus quadrangularis) is the drug which is being used for strengthening of bone by traditional Vaidya since long. It has been selected for oral administration. In clinical trial, 12 patients treated with Majja Basti along with Asthi Shrinkhala pulp capsules and results are very encouraging.

Gupta, Ajay K.; Shah, Nehal; Thakar, A. B.

2012-01-01

115

Effect of Majja Basti (therapeutic enema) and Asthi Shrinkhala (Cissus quadrangularis) in the management of Osteoporosis (Asthi-Majjakshaya).  

PubMed

Osteoporosis is a systemic disorder that affects entire skeleton, which is a metabolic bone disease characterized by low bone mass and microarchitectural deterioration of the skeleton, leading to enhanced bone fragility and a consequent increase in fracture risk. In Ayurveda, it can be correlated with Asthi-Majjakshaya. Basti (therapeutic enema) is the prime therapy for Asthi related diseases and Asthi Shrinkhala (Cissus quadrangularis) is the drug which is being used for strengthening of bone by traditional Vaidya since long. It has been selected for oral administration. In clinical trial, 12 patients treated with Majja Basti along with Asthi Shrinkhala pulp capsules and results are very encouraging. PMID:23049194

Gupta, Ajay K; Shah, Nehal; Thakar, A B

2012-01-01

116

Research on Thermionic Converters Using Barium and Cesium Vapor.  

National Technical Information Service (NTIS)

Investigations of thermionic converter operations were conducted utilizing a dual vapor system of barium and cesium. Barium and cesium vapors were introduced into two differently designed converters. The first converter developed an internal short circuit...

J. D. Long

1967-01-01

117

Drinking Water Criteria Document for Barium (Final Draft), December 1987.  

National Technical Information Service (NTIS)

The Office of Drinking Water, Environmental Protection Agency has prepared a Drinking Water Criteria Document on barium. The Criteria Document is an extensive review of the following topics: Physical chemical properties of Barium; Toxicokinetics and human...

1987-01-01

118

Drinking Water Criteria Document for Barium (Final Draft).  

National Technical Information Service (NTIS)

The Office of Drinking Water (ODW), U.S. Environmental Protection Agency has prepared a Drinking Water Criteria Document on barium. This Criteria Document is an extensive review of the following topics: Physical and chemical properties of barium; Toxicoki...

1985-01-01

119

Placement of Radium/Barium Sludges in Tailings Areas.  

National Technical Information Service (NTIS)

Currently radium is removed from uranium mining and milling effluents by the addition of barium chloride to precipitate the radium as radium/barium sulphate. The precipitate is allowed to settle in sedimentation basins prior to discharge of the effluent. ...

K. L. Murphy G. E. Multamaki

1980-01-01

120

Preparation and Properties of Barium Titanate Nanopowder\\/Epoxy Composites  

Microsoft Academic Search

This article is focused on the preparation of barium titanate nanopowder\\/epoxy composites and studying the effect of barium titanate nanopowder on improving mechanical and thermal characteristics of the epoxy polymer. Composites are prepared by dispersing barium titanate nanopowder in epoxy resin and, subsequently, cross-linking by using diamino diphenyl methane (DDM) curing agents. Synthesis of barium titanate nanopowder\\/epoxy composites is carried

J. Chandradass; Dong-sik Bae

2008-01-01

121

The family caregiving experience of outpatient ECT  

Microsoft Academic Search

BackgroundGiven its safety and efficacy, electroconvulsive therapy (ECT) is increasingly being provided on an outpatient basis. However, there is limited understanding about the educational needs of the family in providing care to one of its members who is receiving outpatient ECT.

Stephanie Sethi; Reg Arthur Williams

2003-01-01

122

Explanatory style of schizophrenic and depressed outpatients  

Microsoft Academic Search

We administered an Attributional Style Questionnaire (ASQ) to several outpatient groups—paranoid schizophrenics (n =32), nonparanoid schizophrenics (n =30), and depressives (n =30)—as well as to a normal comparison group of community college students (n =30). Depressives evidenced a more pessimistic explanatory style than paranoid and nonparanoid schizophrenics and normals. Six months later, among those outpatients experiencing hassles, individuals who attributed

Robert J. Silverman; Christopher Peterson

1993-01-01

123

Synthesis of barium titanate nanopowder using polymeric precursor method  

Microsoft Academic Search

Barium titanate powder was prepared by a polymerized complex method based on the Pechini type reaction route, where barium and titanium ions were polymerized in mixed solution of citric acid, ethylene glycol, to form a transparent resin, which was used as a precursor. Barium titanate powder was formed by heat treating the polymeric precursor in air at 500–900°C. The thermal

V. Vinothini; Paramanand Singh; M. Balasubramanian

2006-01-01

124

Conditions of preparation of calcium and barium hexaboride powders  

Microsoft Academic Search

1.A study was made of the conditions of preparation of barium and calcium hexaborides by the boroncarbide and borothermic techniques and by the reaction of barium carbonate with boron in a vacuum.2.It was established that a barium hexaboride with a composition approaching theoretical can be obtained by the borothermic techniques at a temperature of 1600°C from a charge with a

T. I. Serebryakova; É. V. Marek

1969-01-01

125

42 CFR 410.60 - Outpatient physical therapy services: Conditions.  

Code of Federal Regulations, 2012 CFR

... 2012-10-01 false Outpatient physical therapy services: Conditions. 410...Health Services § 410.60 Outpatient physical therapy services: Conditions. (a...Medicare Part B pays for outpatient physical therapy services only if they are...

2012-10-01

126

42 CFR 410.60 - Outpatient physical therapy services: Conditions.  

Code of Federal Regulations, 2011 CFR

... 2011-10-01 false Outpatient physical therapy services: Conditions. 410...Health Services § 410.60 Outpatient physical therapy services: Conditions. (a...Medicare Part B pays for outpatient physical therapy services only if they are...

2011-10-01

127

42 CFR 410.60 - Outpatient physical therapy services: Conditions.  

Code of Federal Regulations, 2010 CFR

...2009-10-01 false Outpatient physical therapy services: Conditions. 410...Services § 410.60 Outpatient physical therapy services: Conditions. ...Medicare Part B pays for outpatient physical therapy services only if they...

2009-10-01

128

42 CFR 410.60 - Outpatient physical therapy services: Conditions.  

Code of Federal Regulations, 2010 CFR

...2010-10-01 false Outpatient physical therapy services: Conditions. 410...Services § 410.60 Outpatient physical therapy services: Conditions. ...Medicare Part B pays for outpatient physical therapy services only if they...

2010-10-01

129

Early Identification of Alcoholism in Navy Psychiatric Outpatients.  

National Technical Information Service (NTIS)

This study compares Navy outpatient alcoholics, inpatient alcoholics, and a general outpatient psychiatric population on a number of demographic and clinical variables. The outpatient alcoholics were younger, more often married and were more frequently gi...

M. A. Schuckit E. K. E. Gunderson

1977-01-01

130

Barium iodide single-crystal scintillator detectors  

SciTech Connect

We find that the high-Z crystal Barium Iodide is readily growable by the Bridgman growth technique and is less prone to crack compared to Lanthanum Halides. We have grown Barium Iodide crystals: undoped, doped with Ce{sup 3+}, and doped with Eu{sup 2+}. Radioluminescence spectra and time-resolved decay were measured. BaI{sub 2}(Eu) exhibits luminescence from both Eu{sup 2+} at 420 nm ({approx}450 ns decay), and a broad band at 550 nm ({approx}3 {micro}s decay) that we assign to a trapped exciton. The 550 nm luminescence decreases relative to the Eu{sup 2+} luminescence when the Barium Iodide is zone refined prior to crystal growth. We also describe the performance of BaI{sub 2}(Eu) crystals in experimental scintillator detectors.

Cherepy, N

2007-07-30

131

Improved spectrophotometric analysis of barium styphnate  

SciTech Connect

A spectrophotometric procedure to determine the purity of barium styphnate monohydrate based upon the absorbance of the styphnate ion at 326 and 413.3 nm has been developed. The purity is determined by comparing the absorbance of the styphnate ion in barium styphnate and in styphnic acid. Our investigation has shown that the molar absorptivity and lambda maxima of the styphnate ion are quite pH dependent; therefore, the pH is buffered to 6.8 to 7.0 with ammonium acetate. Under these conditions the molar absorptivity is 1.6 x 10/sup 4/ L/mol-cm. Analyses following the procedure in the Navy specification WS13444A using water were found to give low molar absorptivities (1.3 x 10/sup 4/ L/mol-cm) for the styphnic acid calibration resulting in erroneous values for barium styphnate purity.

Brown, N E; Blasi, J A

1983-01-01

132

Synthesis of thin films of barium titanate and barium strontium titanate nanotubes on titanium substrates  

Microsoft Academic Search

In this study, well-ordered nanotubes of titania were fabricated by anodic oxidation of pure titanium foils in HF aqueous solution. Fe-SEM images indicate the average nanotubes diameter is ?100 nm with a thickness of about 200 nm. Nanotube arrays of barium titanate and barium strontium titanate were synthesized under hydrothermal condition at 200 °C taking above-oxidized titania nanotubes as templates.

Jianling Zhao; Xiaohui Wang; Renzheng Chen; Longtu Li

2005-01-01

133

Electric Tuning of Ferromagnetic Resonances in Hexagonal-Barium-Ferrite\\/Barium-Strontium-Titanate Heterostructures  

Microsoft Academic Search

This letter reports the first demonstration of a monolithic heterostructure with a large electric tuning of the ferromagnetic resonance (FMR) at millimeter-wave frequencies. The structure is composed of a barium-strontium-titanate (BST) film and two thin platinum electrodes, all grown on a barium ferrite slab with in-plane uniaxial anisotropy. The electric tuning of the FMR responses around 60 GHz was obtained

Young-Yeal Song; Jaydip Das; Pavol Krivosik; Hyung-Kee Seo; Mingzhong Wu

2010-01-01

134

Microstructure and magnetism in barium strontium titanate (BSTO)–barium hexaferrite (BaM) multilayers  

Microsoft Academic Search

High quality multilayers of barium ferrite (BaM) and barium strontium titanate (BSTO) were grown in optimized conditions on thermally oxidized Si(100) and Al2O3 substrates using magnetron sputtering. As-grown films were amorphous and different annealing procedures were explored to stabilize crystalline phases. BSTO and BaM phases were identified using X-ray diffraction and cross-sectional scanning electron micrographs showed sharp interfaces between BSTO

N. A. Frey; R. Heindl; S. Srinath; H. Srikanth; Nancy J Dudney

2005-01-01

135

Sputtered barium titanate and barium strontium titanate films for capacitor applications  

Microsoft Academic Search

Thin barium titanate and barium strontium titanate films are being developed as dielectric film for use in dc-dc converters. Thin BaTiO3 (BT) and (BaSr)TiO3 (BST) film capacitor devices were fabricated using RF magnetron sputtering techniques. The typical dielectric constant of these film capacitors was in the range of 300 to 690. These film capacitors had dissipation factors between 0.2% to

Bang-Hung Tsao; Susan Heidger; Joseph A. Weimer

2000-01-01

136

Low Temperature Thermal Expansion of Barium Ferrite.  

National Technical Information Service (NTIS)

The linear thermal expansion of polycrystalline barium ferrite, BaFe12O19, was measured from 76 to 293 K both parallel and perpendicular to the magnetization direction. An anisotropy of about 15-20% was observed. The results match well the available data ...

A. F. Clark W. M. Haynes V. A. Deason R. J. Trapani

1975-01-01

137

STABILIZED BARIUM TITANATE CERAMICS FOR CAPACITOR DIELECTRICS  

Microsoft Academic Search

The effects of additions of LaâOâ and LaâOâ--; 3TiOâ on the electronic properties of barium titanate were investigated. ; It was found that small additions of the components markedly increase the ; lifetime of the material subjected to d-c fields of 50 v per mil at 200 l ; C. (auth);

J. B. MacChesney; P. K. Gallagher; F. V. DiMarcello

1963-01-01

138

Beta-Barium Borate Optical Parametric Oscillator.  

National Technical Information Service (NTIS)

A Beta-Barium Borate Optical Parametric Oscillator (BBO OPO) has been constructed and shipped to the Army laboratory at White Sands. This OPO is a truly continuously tunable source with a very large spectral coverage. It is pumped at the third harmonic of...

C. L. Tang

1991-01-01

139

Short chain fatty acid distributions of enema samples from a sigmoidoscopy population: an association of high acetate and low butyrate ratios with adenomatous polyps and colon cancer  

Microsoft Academic Search

We investigated the distribution of short chain fatty acids (SCFA) in enema samples taken from subjects before sigmoidoscopy as an indicator of possible microbial community differences between subjects subsequently diagnosed as normal or having colonic disorders. The major SCFA in all groups were acetic, propionic, and butyric acids. A significantly higher ratio of acetate to total SCFA and lower ratio

G A Weaver; J A Krause; T L Miller; M J Wolin

1988-01-01

140

The changing geography of outpatient procedures.  

PubMed

Since the early 80s, many surgical procedures have moved from the inpatient to outpatient setting. Outpatient surgical visits now account for about two-thirds of all surgical visits in the U.S. Over the same period, freestanding ambulatory surgery centers (ASCs) have arisen as alternatives to traditional hospital-based outpatient surgical departments. The number of ASCs grew from 240 in 1983 to 5,174 in 2008. The growth of ASCs raises safety concerns about the risk of complications and adequate access to emergency care. This Issue Brief summarizes evidence from one state about the changing geography of outpatient procedures and the possible risks associated with these changes. PMID:21545058

David, Guy; Neuman, Mark D

2011-03-01

141

Outpatient Mental Health Benefits in Rhode Island.  

National Technical Information Service (NTIS)

During the last several years considerable attention has been devoted to the need for public policies to influence the availability of outpatient mental health insurance coverage in Rhode Island. A number of experts have expressed opinions on this issue a...

1983-01-01

142

Risk Factors for Suicide in Psychiatric Outpatients.  

National Technical Information Service (NTIS)

The objective of the project is to determine the relationship of a variety of relevant risk factors to eventual suicide in patients evaluated at two psychiatric outpatient clinics. Data relevant to these factors have already been collected for 1987 - 1990...

A. T. Beck G. K. Brown

1993-01-01

143

A novel alternative for renal replacement therapy: 2-year successful colonic dialysis via a Malone antegrade continent enema stoma.  

PubMed

This study is a case report of home-based colonic dialysis (CD) for treating end-stage renal disease in a 20-year-old woman. She had a history of Malone antegrade continence enema (MACE) for treating neuropathic bowel at the age of 11 years. The patient refused any type of renal replacement therapy. However, she agreed to CD through the MACE stoma by changing the colonic irrigation solution to the peritoneal dialysis solution. The patient was discharged with a plasma creatinine (Cr) level of 1.7 mg/dL and blood urea nitrogen (BUN) level of 8 mg/dL. She has continued CD on a regular basis at home. The patient's serum Cr and BUN has remained in the steady low state during 24 months of follow-up (mean Cr level = 2.8 mg/dL and mean BUN level = 10.7 mg/dL). PMID:24345419

Kajbafzadeh, Abdol-Mohammad; Zeinoddini, Atefeh; Heidari, Reza; NaserHodjjati, Haleh; Tourchi, Ali

2014-06-01

144

Barium uptake and adsorption in diatoms  

Microsoft Academic Search

Using trace metal-defined culture conditions, we measured the cellular barium concentration in cultures of the diatom Thalassiosira weissflogii. In cultures with low Fe concentration, at a typical surface seawater Ba concentration of 35 to 40 nmol\\/L, the cellular Ba was 0.5 ?mol\\/mol P (?0.04 ?g\\/g dw), much below all previously published values for phytoplankton. When the Fe concentration in the

Erika Sternberg; Degui Tang; Tung-Yuan Ho; Catherine Jeandel; François M. M. Morel

2005-01-01

145

Leachability of barium-radium sulphate sludges  

Microsoft Academic Search

This paper presents results from the first phase of a research program designed to examine the leachability of radium-226 from barium-radium sulphate sludges. Batch leaching tests were performed. Results showed that liquid:solid contact time was relatively unimportant; radium in the sludge was stable in the presence of deionized water with a slight increase in the amount leached per gram of

P. M. Huck; B. Anderson

1982-01-01

146

Formation of barium-tantalum oxynitrides  

Microsoft Academic Search

Oxynitride powders suitable for sintering to form dielectric ABO3-type perovskites have been prepared by nitriding barium carbonate and tantalum oxide. Both heat treatment in air and reaction in flowing ammonia yield isostructural oxynitride phases, but the amount and electronic state of the oxynitrides depend on the nitriding gas conditions. A red-brown oxynitride of high nitrogen content is described as Ba2Ta2O3N2

A. Hellwig; A. Hendry

1994-01-01

147

Rapid barium removal in the Delaware estuary  

SciTech Connect

Six profiles of dissolved barium covering the entire salinity range of the Delaware River and Bay estuary from March through September 1996 were collected and analyzed. The profiles are similar to one another in both shape and magnitude except for one attribute. A sudden ({le} 24 days), nearly complete (>90%) removal of dissolved Ba in midestuary occurs in mid-May followed by an 80% recovery in early June. This removal appears to be temporally and spatially coupled to the end of the spring bloom. Based on such episodic behavior, and on recent work with flocculation of diatom exudates, the authors conclude that the Ba depletion is caused by barite precipitation in the estuary during the late stages of the bloom. This would imply that lower estuary and inner coastal margin sediments associated with eutrophic estuaries receive a seasonal pulse of barite. The suddenness of this event also implies that sedimentary barite is strongly influenced by high productivity events. Comparison of the riverine Ba concentration with the effective riverine end member after desorptive barium release yields an estimated 30--40 nM Ba available from the suspended sediments as they enter the estuary. This estimate is supported by excess barium in unfiltered samples over filtered samples taken from the river and also by calculations done elsewhere.

Stecher, H.A. III [Univ. of Delaware, Lewes, DE (United States). College of Marine Studies] [Univ. of Delaware, Lewes, DE (United States). College of Marine Studies; [Univ. of Delaware, Newark, DE (United States). Dept. of Geology; Kogut, M.B. [Univ. of Washington, Seattle, WA (United States). School of Oceanography] [Univ. of Washington, Seattle, WA (United States). School of Oceanography

1999-04-01

148

Cost perspectives for outpatient intravenous antimicrobial therapy.  

PubMed

Intravenous antimicrobial therapy often continues after a patient is discharged from the hospital or it begins in the outpatient setting. Reimbursement for this therapy varies by payer. The United States Outpatient Parenteral Antibiotic Therapy (OPAT) Outcomes Registry is a valuable resource for quantifying cost by payer, as well as for describing practice patterns and adverse events related to intravenous antimicrobial therapy. To describe the reimbursement structure and cost of intravenous vancomycin home care therapy for four different types of payers, a survey of home infusion companies was done. Also surveyed were infusion programs participating in the OPAT Outcomes Registry, representing four different types of payers, to determine the cost of outpatient intravenous therapy. A retrospective cohort study of these infusion programs was conducted to describe practice patterns and to identify adverse events that resulted from intravenous vancomycin. We found that the cost of outpatient therapy was substantial, although nonuniform, across payer types. Alternative outpatient therapies associated with lower risks for adverse events and lower costs should be considered. PMID:11837549

Tice, Alan D; Hoaglund, Pam A; Nolet, Barbara; McKinnon, Peggy S; Mozaffari, Essy

2002-02-01

149

42 CFR 414.1105 - Payment for Comprehensive Outpatient Rehabilitation Facility (CORF) services.  

Code of Federal Regulations, 2013 CFR

...Payment for Comprehensive Outpatient Rehabilitation Facility (CORF) services. 414...Payment for Comprehensive Outpatient Rehabilitation Facility (CORF) Services § 414...Payment for Comprehensive Outpatient Rehabilitation Facility (CORF) services....

2013-10-01

150

Binding and Leakage of Barium in Alginate Microbeads  

PubMed Central

Microbeads of alginate cross-linked with Ca2+ and/or Ba2+ are popular matrices in cell-based therapy. The aim of this study was to quantify the binding of barium in alginate microbeads and its leakage under in vitro and accumulation under in vivo conditions. Low concentrations of barium (1 mM) in combination with calcium (50 mM) and high concentrations of barium (20 mM) in gelling solutions were used for preparation of microbeads made of high-G and high-M alginates. High-G microbeads accumulated barium from gelling solution and contained higher concentrations of divalent ions for both low- and high-Ba exposure compared to high-G microbeads exposed to calcium solely and to high-M microbeads for all gelling conditions. Although most of the unbound divalent ions were removed during the wash and culture steps, leakage of barium was still detected during storage. Barium accumulation in blood and femur bone of mice implanted with high-G beads was found to be dose-dependent. Estimated barium leakage relevant to transplantation to diabetic patients with islets in alginate microbeads showed that the leakage was 2.5 times lower than the tolerable intake value given by WHO for high-G microbeads made using low barium concentration. The similar estimate gave 1.5 times higher than is the tolerable intake value for the high-G microbeads made using high barium concentration. In order to reduce the risk of barium accumulation that may be of safety concern, the microbeads made of high-G alginate gelled with a combination of calcium and low concentration of barium ions is recommended for islet transplantation.

M?rch, Yrr A.; Qi, Meirigeng; Gundersen, Per Ole M.; Formo, Kjetil; Lacik, Igor; Skjak-Braek, Gudmund; Oberholzer, Jose; Strand, Berit L.

2013-01-01

151

BARIUM IN TEETH AS INDICATOR OF BODY BURDEN  

EPA Science Inventory

A study was conducted to determine the biological availability of naturally occurring barium in a municipal drinking water by the analysis of barium in deciduous teeth of children. The grade school children of two Illinois towns were chosen for the study. The towns were chosen ba...

152

Toward a more environmentally benign synthesis of doped barium titanate  

Microsoft Academic Search

Barium titanate is one of the most thoroughly studied members of the perovskite family due to its prominent place in the electroceramic industry. To be used as a capacitor at room temperature, a high-dielectric constant is needed which is achieved through doping. The focus of this research was to develop a more environmentally benign alternative to the doping of barium

Anne Marteel-Parrish; Samantha DeCarlo; Danielle Harlan; Jonathan Martin; Heather Sheridan

2008-01-01

153

Large electrostrictive actuation of barium titanate single crystals  

Microsoft Academic Search

An experimental investigation of the electromechanical behavior of single crystals of the ferroelectric perovskite barium titanate is presented. An experimental setup has been designed to investigate large strain actuation in single crystal ferroelectrics subjected to combined electrical and mechanical loading. Experiments have been performed on initially single domain crystals of barium titanate with (100) and (001) orientation at compressive stresses

E. Burcsu; G. Ravichandran; K. Bhattacharya

2004-01-01

154

Composition and structure measurements in an ionospheric barium cloud  

NASA Astrophysics Data System (ADS)

A 48 kg barium payload was launched from Eglin Air Force Base, Florida on 12 December 1980 at 2311 GMT and detonated at 183.7 km. At 2342:50.25 GMT, a second rocket, instrumented with an ion mass spectrometer and pulsed plasma probes, was fired to traverse the barium cloud. Composition, ion density, and structure measurements were acquired up to 241.2 km in both the natural and disturbed ionosphere. The rocket penetrated the barium cloud between 147 and 184 km. In addition to the Ba+, Ba++ produced by H Lyman alpha ionization, and Ca+, an impurity in the barium were detected in the cloud. A peak barium ion concentration of about 6,000,000 ions cu cm was measured at 161 km where the ionospheric NO+ and O2+ ions were essentially eliminated by large recombination loss. The bottom side of the barium cloud had a relatively smooth structure while the top side showed significant density fluctuations. The first experimental evidence of a theoretically predicted E region 'image cloud' was found in the form of an enhanced NO+ layer just below the barium cloud. Unexplained wave-like density variations in O+, NO+, and O2(+) also were seen above the barium cloud to 195 km. A quantitative estimate of the outgassing water vapor concentrations near the payload's surface was made using the fast change transfer rate coefficient for O+ + H2O yields H2O+ + O that created the observed water vapor ions.

Narcisi, R.; Tracinski, E.; Federico, G.; Wlodyka, L.; Bench, P.

1981-12-01

155

Removal of barium and radium from groundwater. Environmental research brief  

Microsoft Academic Search

A research project was undertaken to investigate processes for removing barium and radium from drinking water. Special emphasis was placed on ion exchange processes that can be used without adding large concentrations of sodium to the water. The wastes from radium and barium removal processes were also characterized, and processes suitable for treatment of ion-exchange brines were evaluated. The report

V. L. Snoeyink; C. C. Chambers; C. K. Schmidt; R. F. Manner; A. G. Myers

1987-01-01

156

Barium strontium titanate powder obtained by polymeric precursor method  

Microsoft Academic Search

Pure barium strontium titanate powder, with Ba\\/Sr ratio of 80\\/20 was prepared by the polymeric precursor method (also called Pechini process). The powder was obtained after a calcination at 800 °C for 8 h and characterized by XRD, IR, BET and SEM. The requirements to avoid barium carbonate as a secondary phase are presented and discussed in detail.

A. Ries; A. Z. Simões; M. Cilense; M. A. Zaghete; J. A. Varela

2003-01-01

157

Barium strontium titanate powder obtained by polymeric precursor method  

SciTech Connect

Pure barium strontium titanate powder, with Ba/Sr ratio of 80/20 was prepared by the polymeric precursor method (also called Pechini process). The powder was obtained after a calcination at 800 deg. C for 8 h and characterized by XRD, IR, BET and SEM. The requirements to avoid barium carbonate as a secondary phase are presented and discussed in detail.

Ries, A.; Simoes, A.Z.; Cilense, M.; Zaghete, M.A.; Varela, J.A

2003-03-15

158

Thermal decomposition of (BaTi) citrates into barium titanate  

Microsoft Academic Search

From aqueous solutions of barium and titanium citrates two different (BaTi) citrate salts can be precipitated, depending on the pH of the solution. The ratio of barium to titanium in the salts is either 1 : 1 or 2 : 1. The thermal decomposition of the salts was investigated by means of DTA, TGA, infrared spectroscopy, and X-ray diffraction. At

D. Hennings; W. Mayr

1978-01-01

159

Employee Questionnaire for Assessing Patient Safety in Outpatient Surgery.  

National Technical Information Service (NTIS)

This paper provides information on the reliability and validity of an employee questionnaire developed in a study of patient safety in outpatient surgery. The Systems Engineering Intervention in Outpatient Surgery (SEIPS), a collaborative community perspe...

P. Carayon C. J. Alvarado A. S. Hundt S. Springman A. Borgsdorf

2005-01-01

160

38 CFR 17.92 - Outpatient care for research purposes.  

Code of Federal Regulations, 2013 CFR

...2013-07-01 false Outpatient care for research purposes. 17.92 Section...Treatment § 17.92 Outpatient care for research purposes. Subject to...there are insufficient veteran-patients suitable for the project....

2013-07-01

161

38 CFR 17.92 - Outpatient care for research purposes.  

Code of Federal Regulations, 2011 CFR

...2011-07-01 false Outpatient care for research purposes. 17.92 Section...Treatment § 17.92 Outpatient care for research purposes. Subject to...there are insufficient veteran-patients suitable for the project....

2011-07-01

162

38 CFR 17.92 - Outpatient care for research purposes.  

Code of Federal Regulations, 2012 CFR

...2012-07-01 false Outpatient care for research purposes. 17.92 Section...Treatment § 17.92 Outpatient care for research purposes. Subject to...there are insufficient veteran-patients suitable for the project....

2012-07-01

163

38 CFR 17.92 - Outpatient care for research purposes.  

Code of Federal Regulations, 2010 CFR

...2010-07-01 false Outpatient care for research purposes. 17.92 Section...Treatment § 17.92 Outpatient care for research purposes. Subject to...there are insufficient veteran-patients suitable for the project....

2010-07-01

164

The Transition from Inpatient to Outpatient Care.  

ERIC Educational Resources Information Center

Presents case of 29-year-old white male veteran, whose case illustrates need for coordination of inpatient and outpatient services for chronically suicidal patients to reduce risk during transition. Includes comments on case from Phillip Kleespies, Sarah Marshall, Teri Pokrajac, and Richard Amodio and from Mark Goldblatt. (NB)

Berman, Alan L.; And Others

1994-01-01

165

Diagnosing major depression in medical outpatients  

Microsoft Academic Search

Objective: To assess the acceptability to patients of a diagnostic interview for depression (Structured Clinical Interview for DSM-IV; SCID) conducted over the telephone to their homes. Method: Postal questionnaire survey of patients who had attended an oncology outpatient clinic where they had scored high on a screening questionnaire and had subsequently undergone an SCID interview over the telephone. Results: Of

Kathryn Allen; Ann Cull; Michael Sharpe

2003-01-01

166

Clients' Secret Keeping in Outpatient Therapy.  

ERIC Educational Resources Information Center

The relationship between outpatient clients' self-reported secret keeping in therapy and symptomatology is investigated (N=42). Although the study supports previous research on the negative effects of keeping secrets in general, it offers new information about the potential benefits of patients' image management in relation to their psychological…

Kelly, Anita E.

1998-01-01

167

Tobacco Smoking in Adolescent Psychiatric Outpatients  

ERIC Educational Resources Information Center

Three main aims of this study were to ascertain the prevalence rate of smoking among adolescent psychiatric outpatients; estimate smokers' degree of nicotine dependence; and investigate the relationship between smoking and common mental health disorders. Face-to-face interviews were conducted on 93 patients ages 13-18 presenting to an adolescent…

Ditchburn, K. Marie; Sellman, J. Douglas

2013-01-01

168

Outpatient Treatment for Older Patients with AML  

Cancer.gov

In this study, researchers are testing a new drug called tipifarnib (Zarnestra?) to treat patients aged 70 or older who have AML and who are not eligible for standard treatment. Tipifarnib is an oral medication that allows patients with AML to be treated in an outpatient setting.

169

Alexithymia in Dutch violent forensic psychiatric outpatients  

Microsoft Academic Search

Until now alexithymia has not been investigated in Dutch low-educated offenders who are known for their violent behaviour. We therefore investigated a sample of aggressive forensic psychiatric outpatients, who are characterized by emotional dysregulation in conflict situations. For that purpose we used a Dutch questionnaire, the Bermond-Vorst Alexithymia Questionnaire (BVAQ; Vorst & Bermond, 2001), which we also administered in a

R. H. J. Hornsveld; F. W. Kraaimaat

2011-01-01

170

Bereavement and Unresolved Grief in Psychiatric Outpatients.  

ERIC Educational Resources Information Center

Psychiatric outpatients (N=211) reported evidence of unresolved grief. Incidence of unresolved grief was greatest among patients who had lost children and lowest among patients who had lost parents. Unresolved grief was associated with increased intensity of affective symptomatology; past histories of depression, suicide attempts, and alcohol…

Zisook, Sidney; Lyons, Lucy

1990-01-01

171

College Dropouts in a Psychiatric Outpatient Department  

ERIC Educational Resources Information Center

A comparison of forty-one patients in a psychiatric outpatient department identified as college dropouts and a matched group of patients who had never attended college showed a trend suggesting some difference in occupational status, but no significant statistical differences with respect to psychiatric diagnostic categories. (MB)

Werman, David S.; Lipper, Steven

1976-01-01

172

Current-voltage characteristics of barium polymethacrylate  

SciTech Connect

In this paper current-voltage characteristics of Barium Polymethacrylate (BaPMA) in the form of Al-BaPMA-Al structures are studied. The currents are measured in the voltage range 10 V-1 kV. At low voltages an ohmic relation is observed and at higher voltages the Poole-Frenkel mechanism is proposed. The mechanism of conduction has been explained on the basis of different current-voltage and current-temperature curves. The activation energy values calculated using Arrhenius relation fall in the range 0.25-2 eV, suggesting a sequence of trapping levels.

Chohan, M.H. (Lab. for Electrical Characterization of Polymers, Dept. of Electronics, Quaid-i-Azam Univ., Islamabad (PK)); Zulfiqar, M.; Sapra, Z.H.; Husain, R.; Zulfiqar, S. (Dept. of Chemistry, Quaid-i-Azam Univ., Islamabad (PK))

1992-06-30

173

Dielectric properties of barium titanate supramolecular nanocomposites  

NASA Astrophysics Data System (ADS)

Nanostructured dielectric composites can be obtained by dispersing high permittivity fillers, barium titanate (BTO) nanocubes, within a supramolecular framework. Thin films of BTO supramolecular nanocomposites exhibit a dielectric permittivity (?r) as high as 15 and a relatively low dielectric loss of ~0.1 at 1 kHz. These results demonstrate a new route to control the dispersion of high permittivity fillers toward high permittivity dielectric nanocomposites with low loss. Furthermore, the present study shows that the size distribution of nanofillers plays a key role in their spatial distribution and local ordering and alignment within supramolecular nanostructures.

Lee, Keun Hyung; Kao, Joseph; Parizi, Saman Salemizadeh; Caruntu, Gabriel; Xu, Ting

2014-03-01

174

Dielectric properties of barium titanate supramolecular nanocomposites.  

PubMed

Nanostructured dielectric composites can be obtained by dispersing high permittivity fillers, barium titanate (BTO) nanocubes, within a supramolecular framework. Thin films of BTO supramolecular nanocomposites exhibit a dielectric permittivity (?r) as high as 15 and a relatively low dielectric loss of ?0.1 at 1 kHz. These results demonstrate a new route to control the dispersion of high permittivity fillers toward high permittivity dielectric nanocomposites with low loss. Furthermore, the present study shows that the size distribution of nanofillers plays a key role in their spatial distribution and local ordering and alignment within supramolecular nanostructures. PMID:24584569

Lee, Keun Hyung; Kao, Joseph; Parizi, Saman Salemizadeh; Caruntu, Gabriel; Xu, Ting

2014-04-01

175

Scattering lengths of calcium and barium isotopes  

SciTech Connect

We have calculated the s-wave scattering length of all the even isotopes of calcium (Ca) and barium (Ba) in order to investigate the prospect of Bose-Einstein condensation (BEC). For Ca we have used an accurate molecular potential based on detailed spectroscopic data. Our calculations show that Ca does not provide other isotopes alternative to the recently Bose condensed {sup 40}Ca that suffers strong losses because of a very large scattering length. For Ba we show by using a model potential that the even isotopes cover a broad range of scattering lengths, opening the possibility of BEC for at least one of the isotopes.

Dammalapati, U.; Willmann, L.; Knoop, S. [Kernfysisch Versneller Instituut (KVI), University of Groningen, Zernikelaan 25, 9747 AA Groningen (Netherlands); LaserLaB Vrije Universiteit, De Boelelaan 1081, 1081 HV Amsterdam (Netherlands)

2011-11-15

176

Short-cavity squeezing in barium  

NASA Technical Reports Server (NTRS)

Broadband phase sensitive noise and squeezing were experimentally observed in a system of barium atoms interacting with a single mode of a short optical cavity. Squeezing of 13 +/- 3 percent was observed. A maximum possible squeezing of 45 +/- 8 percent could be inferred for out experimental conditions, after correction for measured loss factors. Noise reductions below the quantum limit were found over a range of detection frequencies 60-170 MHz and were best for high cavity transmission and large optical depths. The amount of squeezing observed is consistent with theoretical predictions from a full quantum statistical model of the system.

Hope, D. M.; Bachor, H-A.; Manson, P. J.; Mcclelland, D. E.

1992-01-01

177

Europium-doped barium bromide iodide  

SciTech Connect

Single crystals of Ba0.96Eu0.04BrI (barium europium bromide iodide) were grown by the Bridgman technique. The title compound adopts the ordered PbCl2 structure [Braekken (1932). Z. Kristallogr. 83, 222-282]. All atoms occupy the fourfold special positions (4c, site symmetry m) of the space group Pnma with a statistical distribution of Ba and Eu. They lie on the mirror planes, perpendicular to the b axis at y = +-0.25. Each cation is coordinated by nine anions in a tricapped trigonal prismatic arrangement.

Gundiah, Gautam; Hanrahan, Stephen M.; Hollander, Fredrick J.; Bourret-Courchesne, Edith D.

2009-10-21

178

An evaluation of flexible fibreoptic sigmoidoscopy.  

PubMed Central

Results of 350 flexible fibreoptic sigmoidoscopy examinations showed a diagnostic yield of 30% compared with 6.5% by rigid sigmoidoscopy of the same patients. The mean time for the examinations was eight minutes, a distance of over 50 cm being visualised in 65% of the patients. Preparation of the bowel with a single phosphate enema was adequate in 95% of the patients. As an outpatient investigation for clinicians fibreoptic sigmoidoscopy is a safe, quick, and useful addition to rigid sigmoidoscopy and should result in a decrease in the number of barium enema examinations required.

Vellacott, K D; Hardcastle, J D

1981-01-01

179

Geographic market areas for psychiatric and medical outpatient treatment  

Microsoft Academic Search

The research objective was to measure the variation in the size of a facility's market areas across different diagnostic categories. Specifically, the market area radii for outpatient psychiatric services are compared to the radii for outpatient medical services. Data were collected from the outpatient clinics of the Little Rock Veterans Administration Medical Center. Visits were categorized into 100 diagnostic groups.

John C. Fortney; A. Elizabeth Lancaster; Richard R. Owen; Mingliang Zhang

1998-01-01

180

Barium in Deep-Sea Sediment: A Geochemical Proxy for Paleoproductivity  

Microsoft Academic Search

We used sediment traps to define the particulate fluxes of barium and organic carbon and investigate the use of barium as a proxy for ocean fertility. Strong correlations between Corg and Ba fluxes indicate a link between upper ocean biological processes and barium flux to the seafloor. The ratio of organic carbon to barium decreases systematically with water depth. Data

Jack Dymond; Erwin Suess; Mitch Lyle

1992-01-01

181

Effect of Barium on Growth and Macronutrient Nutrition in Tanzania Guineagrass Grown in Nutrient Solution  

Microsoft Academic Search

Barium has been identified as a toxic element to most plants, although for grasses the toxicity has not been determined. A greenhouse experiment was performed to evaluate the effect of barium on growth parameters, barium accumulation, and macronutrient concentration in Tanzania guineagrass (Panicum maximum Jacq.), cultivated in nutrient solution. Five barium rates and a control were set in a complete

Francisco Antonio Monteiro; Roberta Corrêa Nogueirol; Leônidas Carrijo Azevedo Melo; Adriana Guirado Artur; Fabiana da Rocha

2011-01-01

182

Particulate barium fluxes and their relationships to biological productivity  

NASA Astrophysics Data System (ADS)

To understand better the processes that control the transport of particulate barium through the water column and its preservation in marine sediments, we measured particulate barium fluxes along an equatorial transect at 140°W using moored sediment traps. The fluxes of barium correlate strongly with the fluxes of organic carbon; however, this relationship is non-linear—higher carbon fluxes have proportionately less associated barium. As a result we observe spatial and temporal variations of roughly a factor of three in the barium-to-organic carbon ratio. Understanding this variability may help to define the processes that determine the geochemical behavior of Ba in the oceans. Several hypotheses that could influence the flux of Ba and its relationship to organic carbon flux have been proposed: barite formation in barium- and sulfate-enriched microenvironments formed during particle settling; lateral advection of carbon and barium from continental margins; the influence of seawater barium concentration; and Ba scavenging by aluminosilicates. Our study reveals temporal variability in the Ba/C org values that occurs over timescales of less than one month. Also, depth profiles of carbon and Ba fluxes show that the variability originates at depths less than 1200 m and is conveyed throughout the water column. Both the rapid changes and the upper water column origin of the signals point to upper-ocean biological processes as the predominant cause of the variability in the barium-to-organic carbon ratios. We also observe, however, a 25% increase in Ba flux below 1200 m. The deep sources of Ba could result from barite formation linked to continued organic carbon degradation or from lateral sources of particulate barium. Because the spatial and temporal changes in Ba/C org values correlated to changes in particulate opal and organic carbon fluxes, ocean ecology appears to have an important influence on barium fluxes. A better understanding of the processes that contribute to the particulate barium flux is needed before the accumulation of barium in marine sediments can be used as a quantitative proxy for ocean productivity.

Dymond, Jack; Collier, Robert

183

Microstructure and magnetism in barium strontium titanate (BSTO)-barium hexaferrite (BaM) multilayers  

SciTech Connect

High quality multilayers of barium ferrite (BaM) and barium strontium titanate (BSTO) were grown in optimized conditions on thermally oxidized Si(1 0 0) and Al{sub 2}O{sub 3} substrates using magnetron sputtering. As-grown films were amorphous and different annealing procedures were explored to stabilize crystalline phases. BSTO and BaM phases were identified using X-ray diffraction and cross-sectional scanning electron micrographs showed sharp interfaces between BSTO and BaM layers. Magnetic hysteresis loops obtained at various temperatures and field orientations showed a large coercivity ({approx}2500 Oe) consistent with the hard magnetic hexaferrite component. Hysteresis loops also revealed the distinct influence of magnetocrystalline and shape anisotropies at different temperature ranges.

Frey, N.A. [Materials Physics Laboratory, Physics Department, University of South Florida, 4202 East Fowler Avenue, Tampa, FL 33620 (United States); Heindl, R. [Materials Physics Laboratory, Physics Department, University of South Florida, 4202 East Fowler Avenue, Tampa, FL 33620 (United States); Srinath, S. [Materials Physics Laboratory, Physics Department, University of South Florida, 4202 East Fowler Avenue, Tampa, FL 33620 (United States); Srikanth, H. [Materials Physics Laboratory, Physics Department, University of South Florida, 4202 East Fowler Avenue, Tampa, FL 33620 (United States)]. E-mail: sharihar@cas.usf.edu; Dudney, N.J. [Solid State Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831 (United States)

2005-08-11

184

Popliteal artery aneurysm repair as an outpatient.  

PubMed

With the advent of endovascular repair of aneurysmal disease, length of hospital stay is becoming shorter. Inherent morbidity and problems associated with open repair have been minimized, leading to an improved patient experience. We describe a fairly typical patient with a popliteal artery aneurysm who would be expected to have a protracted recovery from open resection but instead underwent endovascular repair as an outpatient. PMID:19698301

Mukherjee, Dipankar; Tallant, Tony

2009-01-01

185

Children's contributions to pediatric outpatient encounters  

Microsoft Academic Search

Objective: Generally, increasing attention is being paid to the quality of doctor-patient communication. However, children's contributions have been, until now, primarily ignored in communication research, although there are indications that considering their views increases satisfaction and compliance. In the communication during outpatient pediatric encounters and what factors were associated with children's contributions. Patients: Twenty-one consulting pediatricians video-taped a total of

A. M. van Dulmen

1998-01-01

186

Proton conductivity of potassium doped barium zirconates  

SciTech Connect

Potassium doped barium zirconates have been synthesized by solid state reactions. It was found that the solubility limit of potassium on A-sites is between 5% and 10%. Introducing extra potassium leads to the formation of second phase or YSZ impurities. The water uptake of barium zirconates was increased even with 5% doping of potassium at the A-site. The sintering conditions and conductivity can be improved significantly by adding 1 wt% ZnO during material synthesis. The maximum solubility for yttrium at B-sites is around 15 at% after introducing 1 wt% zinc. The conductivity of Ba{sub 0.95}K{sub 0.05}Zr{sub 0.85}Y{sub 0.11}Zn{sub 0.04}O{sub 3-{delta}} at 600 deg. C is 2.2x10{sup -3} S/cm in wet 5% H{sub 2}. The activation energies for bulk and grain boundary are 0.29(2), 0.79(2) eV in wet 5% H{sub 2} and 0.31(1), 0.74(3) eV in dry 5% H{sub 2}. A power density of 7.7 mW/cm{sup 2} at 718 deg. C was observed when a 1 mm thick Ba{sub 0.95}K{sub 0.05}Zr{sub 0.85}Y{sub 0.11}Zn{sub 0.04}O{sub 3-{delta}} pellet was used as electrolyte and platinum electrodes. - Graphical abstract: Potassium doped barium zirconates have been synthesized by solid state reactions. It was found that the solubility limit of potassium on A-sites is between 5% and 10 %. The sintering conditions and conductivity can be improved significantly by adding 1 wt% ZnO during material synthesis. Five percent doping of potassium at A-site can double the total conductivity.

Xu Xiaoxiang [School of Chemistry, University of St. Andrews, Fife KY16 9ST (United Kingdom); Tao Shanwen, E-mail: s.tao@hw.ac.u [School of Chemistry, University of St. Andrews, Fife KY16 9ST (United Kingdom); Department of Chemistry, Heriot-Watt University, Edinburgh EH14 4AS (United Kingdom); Irvine, John T.S. [School of Chemistry, University of St. Andrews, Fife KY16 9ST (United Kingdom)

2010-01-15

187

Disparities in internet use among orthopedic outpatients.  

PubMed

Internet access has lagged behind for patients with lower incomes and from certain ethnic groups. This study investigated the possible improvement of access to health-related information on the Internet for all patients in an urban outpatient setting, regardless of socioeconomic background. A 28-question survey was completed by 100 orthopedic outpatients evaluating associations between their age, ethnicity, income, or education level and their access to the Internet. The survey also examined how patients used the Internet to obtain information about their medical condition, their privacy concerns when conducting online research, and their use of mobile phones as a primary means of Internet access. The Internet was used by 57% of orthopedic outpatients in this urban setting. Internet access decreased with advancing age but increased with increasing income and education, findings consistent with similar studies. Despite the inability to identify an association between ethnicity and Internet access in this patient population, fewer Latinos (33%) than whites (67%) or African Americans (77%) sought information about their medical condition. Among patients who used a mobile phone as the primary method for online access, 74% were African American or Latino and 26% were white. This difference in mobile phone use for online access suggests that mobile phones have provided ethnic minorities with greater Internet access and thus may have narrowed the digital divide among the races. PMID:24679198

Walsh, Kenneth P; Rehman, Saqib; Goldhirsh, Jessie

2014-02-01

188

Dark-lumen MR colonography with fecal tagging: a comparison of water enema and air methods of colonic distension for detecting colonic neoplasms  

Microsoft Academic Search

The purpose was to evaluate MR colonography (MRC) with barium fecal tagging in detecting colorectal pathology and to determine\\u000a how air-based and water-based colonic distension influences MRC. We studied 83 patients with high risk of colonic neoplasms.\\u000a All received oral barium sulfate for colonic preparation before unenhanced and enhanced T1-weighted gradient-echo MRC using\\u000a either water (n=54) or air (n=29) for

Sonia Rodriguez Gomez; Mario Pagés Llinas; Antoni Castells Garangou; Carmen De Juan Garcia; Josep M. Bordas Alsina; Jordi Rimola Gibert; Juan R. Ayuso Colella; Carmen Ayuso Colella

2008-01-01

189

Mixing inpatient with outpatient care: establishing an outpatient clinic on a burn unit.  

PubMed

Outpatient care of patients with burns is an important aspect of a total health care plan. Changes in the health care system, which focuses on cost containment, force reevaluation of the methods used for delivery of high-tech care, particularly in areas such as burn care. Great advances that have taken place over the past decade in the field of burn care have enabled health care providers to treat more patients with burns as outpatients. Those who are specially trained in burn care continue to be the optimal caregivers. The appropriate facilities, spray tables, hydrotherapy, and dressing rooms in which patients with burns are treated are equally important and must be adapted to meet the needs of patients who are ambulatory. The goals of an outpatient burn clinic should be to provide daily wound care and patient education to prevent unnecessary admissions and to promote early discharge for hospitalized patients. Nurses trained in burn care are the optimal providers of ambulatory burn care; therefore the clinic location should be where the caregivers are available. Several obstacles needed to be overcome before an outpatient clinic could be established on the burn unit itself. Wound care is now provided by burn unit nurses, which leads to better results and more consistent follow-up. Patient satisfaction is increased, patient teaching is provided by experienced staff, unnecessary admissions are prevented, and patients are able to be discharged from the hospital earlier or to be followed as outpatients even if surgery is eventually required. PMID:1452596

Coffee, T; Yurko, L; Fratianne, R B

1992-01-01

190

Magnetic properties of substituted barium ferrite powders  

SciTech Connect

Hexagonal barium ferrites were prepared using the citrate method. Cobalt and titanium were added in the amounts x from 0.2 to 1.1 ion/f.u. related to the formula BaCo{sub x}Ti{sub x}Fe{sub 12{minus}2x}O{sub 19}. The heat treatment has been applied in three steps of 550 C/5 hrs, 850 C/2 hrs and 1,100 C/2 hrs. The following magnetic properties have been achieved: H{sub c} {approximately} 80 kA/m, J{sub s} {approximately} 120 {times} 10{sup {minus}6} Tkg{sup {minus}1} m{sup 3}, and J{sub r} {approximately} 60 {times} 10{sup {minus}6} Tkg{sup {minus}1} m{sup 3} in the composition for which x is equal to 0.5 ion/f.u. The magnetic parameters have been measured by the vibration magnetometer.

Gruskova, A. [Slovak Univ. of Technology, Bratislava (Slovakia). Dept. of Electrotechnology] [Slovak Univ. of Technology, Bratislava (Slovakia). Dept. of Electrotechnology

1994-03-01

191

Barium hexaferrite ferrofluids - preparation and physical properties  

NASA Astrophysics Data System (ADS)

Barium hexaferrite BaFe 12-2 xTi xCo xO 19 ferrofluids have been prepared for the first time using oleic acid as surfactant and Isopar M ® as carrier liquid. The initial susceptibility versus temperature for zero-field cooling of the ferrofluid was obtained by a vibrating sample magnetometer. TEM pictures of the fluid show isolated particles and only small agglomerates and a mean particle diameter of approx. 8 nm. Numerical calculations of the magneto-viscous effect, based on the local-equilibrium magnetic state model, clearly show the benefit for Ba-ferrite ferrofluids resulting from the high uniaxial anisotropy compared to magnetite ferrofluids. Rheological measurements were performed with a rotational-type viscometer with magnetic field perpendicular to the hydrodynamic vortex axis.

Müller, R.; Hiergeist, R.; Steinmetz, H.; Ayoub, N.; Fujisaki, M.; Schüppel, W.

1999-07-01

192

Synthesis of barium fluoride nanoparticles from microemulsion  

NASA Astrophysics Data System (ADS)

The cetyltrimethylammonium bromide (CTAB)/2-octanol/water microemulsion system was used to synthesize barium fluoride nanoparticles. X-ray powder diffraction (XRD) analysis showed that the products were single phase. The results of scanning electron microscopy and calculations using the Scherrer equation from the line widths of the XRD have been used to estimate the average particle sizes of the powder products. The results showed that the nanoparticle size was affected by water content and surfactant (CTAB) concentration. As water content decreases from 14.2 to 9.47% (w/w), the particle size decreases from 75 to 40 nm. In addition, increasing the reaction times from 5 to 120 min increases the particle size from 75 to 150 nm, and increasing the amount of surfactant decreases the size of the particle. Luminescence spectra of the BaF2:Ce nanoparticles are also discussed.

Hua, Ruinian; Zang, Chunyu; Shao, Chen; Xie, Demin; Shi, Chunshan

2003-06-01

193

Effects of light exposure on irradiated barium fluoride crystals.  

National Technical Information Service (NTIS)

Small barium fluoride crystals have been irradiated using cobalt-60 gamma rays under various illumination conditions to establish the effect of photo-bleaching of the radiation-induced color centers. This paper describes results of a few different experim...

C. R. Wuest G. J. Mauger

1993-01-01

194

Study of the photovoltaic effect in thin film barium titanate  

NASA Technical Reports Server (NTRS)

The feasibility of making non-volatile digital memory devices of barium titanate, BaTiO3, that are integrated onto a silicon substrate with the required ferroelectric film produced by processing, compatible with silicon technology was examined.

Grannemann, W. W.; Dharmadhikari, V. S.

1983-01-01

195

Barium and Radium in Water Treatment Plant Wastes.  

National Technical Information Service (NTIS)

Water treatment plants at nine locations (10 plants) in Illinois and Iowa were studied to determine the characteristics and disposal practices for the sludge, brine, and backwash water containing radium (Ra) and/or barium (Ba). The treatment processes in ...

A. G. Myers C. K. Jongeward S. K. Richter V. L. Snoeyink

1985-01-01

196

Calculated emission rates for barium releases in space  

NASA Technical Reports Server (NTRS)

The optical emissions from barium releases in space are caused by resonance and fluorescent scattering of sunlight. Emission rates for the dominant ion and neutral lines are calculated assuming the release to be optically thin and the barium to be in radiative equilibrium with the solar radiation. The solar spectrum has deep Fraunhofer absorption lines at the primary barium ion resonances. A velocity component toward or away from the sun will Doppler shift the emission lines relative to the absorption lines and the emission rates will increase many-fold over the rest value. The Doppler brightening is important in shaped charge or satellite releases where the barium is injected at high velocities. Emission rates as a function of velocity are calculated for the 4554, 4934, 5854, 6142 and 6497 A ion emission lines and the dominant neutral line at 5535 A. Results are presented for injection parallel to the ambient magnetic field, B, and for injection at an angle to B.

Stenbaek-Nielsen, H. C.

1989-01-01

197

Dielectrics of lead zirconate bonded with barium borate glass  

Microsoft Academic Search

Dielectric constant variation with temperature and frequency is reported for barium-borate glass-bonded lead zirconate. Lowering\\u000a of the relative permittivity of the ceramic is attributed to the presence of the glass.

K Singh; Aruna Indurkar

1988-01-01

198

Synthesis, photoluminescence and magnetic properties of barium vanadate nanoflowers  

SciTech Connect

Graphical abstract: The flower-shaped barium vanadate was obtained for the first time. The photoluminescence and magnetic properties of the barium vanadate nanoflowers were investigated at room temperature. Research highlights: {yields} In the paper, the flower-shaped barium vanadate were obtained for the first time. The CHM method used here is new and simple for preparation of barium vanadate. {yields} The photoluminescence and magnetic properties of the barium vanadate nanoflowers were investigated at room temperature. The strong bluish-green emission was observed. {yields} The ferromagnetic behavior of the barium vanadate nanoflowers was found with saturation magnetization of about 83.50 x 10{sup -3} emu/g, coercivity of 18.89 Oe and remnant magnetization of 4.63 x 10{sup -3} emu/g. {yields} The mechanisms of PL and magnetic property of barium vanadate nanoflowers have been discussed. -- Abstract: The flower-shaped barium vanadate has been obtained by the composite hydroxide mediated (CHM) method from V{sub 2}O{sub 5} and BaCl{sub 2} at 200 {sup o}C for 13 h. XRD and XPS spectrum of the as-synthesized sample indicate it is hexagonal Ba{sub 3}V{sub 2}O{sub 8} with small amount of Ba{sub 3}VO{sub 4.8} coexistence. Scan electron microscope and transmission electron microscope display that the flower-shaped crystals are composed of nanosheets with thickness of {approx}20 nm. The UV-visible spectrum shows that the barium vanadate sample has two optical gaps (3.85 eV and 3.12 eV). Photoluminescence spectrum of the barium vanadate flowers exhibits a visible light emission centered at 492 and 525 nm which might be attributed to VO{sub 4} tetrahedron with T{sub d} symmetry in Ba{sub 3}V{sub 2}O{sub 8}. The ferromagnetic behavior of the barium vanadate nanoflowers has been found with saturation magnetization of about 83.50 x 10{sup -3} emu/g, coercivity of 18.89 Oe and remnant magnetization of 4.63 x 10{sup -3} emu/g, which is mainly due to the presence of a non-orthovanadate phase with spin S = 1/2.

Xu, Jing [Department of Applied Physics, Chongqing University, 174 Shapingba Street, Chongqing 400044 (China) [Department of Applied Physics, Chongqing University, 174 Shapingba Street, Chongqing 400044 (China); Chongqing University of Science and Technology, Chongqing 401331 (China); Hu, Chenguo, E-mail: hucg@cqu.edu.cn [Department of Applied Physics, Chongqing University, 174 Shapingba Street, Chongqing 400044 (China)] [Department of Applied Physics, Chongqing University, 174 Shapingba Street, Chongqing 400044 (China); Xi, Yi [Department of Applied Physics, Chongqing University, 174 Shapingba Street, Chongqing 400044 (China)] [Department of Applied Physics, Chongqing University, 174 Shapingba Street, Chongqing 400044 (China); Peng, Chen [School of Physical Science and Technology, Southwest University, Chongqing 400715 (China)] [School of Physical Science and Technology, Southwest University, Chongqing 400715 (China); Wan, Buyong; He, Xiaoshan [Department of Applied Physics, Chongqing University, 174 Shapingba Street, Chongqing 400044 (China)] [Department of Applied Physics, Chongqing University, 174 Shapingba Street, Chongqing 400044 (China)

2011-06-15

199

Neutron source, neutron density and the origin of barium stars  

Microsoft Academic Search

The authors present new high resolution spectra of the MgH profiles in nine barium stars, and determine, by spectral synthesis techniques, the magnesium isotopic ratios in each star. When compared with recent AGB nucleosynthesis calculations, they can emphatically rule out the operation of the 22Ne(alpha, n)25Mg reaction as the neutron source responsible for the s-process enhancements observed in these barium

Robert A. Malaney; David L. Lambert

1988-01-01

200

White-dwarf kicks and implications for barium stars  

NASA Astrophysics Data System (ADS)

The formation mechanism of the barium stars is thought to be well understood. Barium-rich material, lost in a stellar wind from a thermally-pulsing asymptotic-giant branch star in a binary system, is accreted by its companion main-sequence star. Now, many millions of years later, the primary is an unseen white dwarf and the secondary has itself evolved into a giant which displays absorption lines of barium in its spectrum and is what we call a barium star. A similar wind-accretion mechanism is also thought to form the low-metallicity CH and carbon-enhanced metal-poor stars. Qualitatively the picture seems clear but quantitatively it is decidedly murky: several key outstanding problems remain which challenge our basic understanding of binary-star physics. Barium stars with orbital periods less than about 4000 days should - according to theory - be in circular orbits because of tidal dissipation, yet they are often observed to be eccentric. Only one barium-star period longer than 104 days has been published although such stars are predicted to exist in large numbers. In this paper we attempt to shed light on these problems. First, we consider the impact of kicking the white dwarf at its birth, a notion which is supported by independent evidence from studies of globular clusters. Second, we increase the amount of orbital angular momentum loss during wind mass transfer, which shrinks barium-star binaries to the required period range. We conclude with a discussion of possible physical mechanisms and implications of a kick, such as the break up of wide barium-star binaries and the limits imposed on our models by observations.

Izzard, R. G.; Dermine, T.; Church, R. P.

2010-11-01

201

The properties of barium titanate RF sputtered in argon  

Microsoft Academic Search

The structural, optical and dielectric properties of barium titanate thin films deposited on water-cooled substrates by RF sputtering in Ar (99.99%) were investigated. Optically thin and thick films for the visible spectral region were studied.From the investigations it is concluded that there are at least two crystalline phases in addition to amorphous barium titanate in the deposited coatings, and the

T Pencheva; M Nenkov

1997-01-01

202

'Skidding' of the CRRES G-9 barium release  

NASA Technical Reports Server (NTRS)

A simulation study and experimental data of the CRRES G-9 ionospheric barium release are presented. The simulation study is based on a 2D electrostatic code that incorporates time-dependent coupling to the background plasma. It is shown that the densest portion of the barium ion cloud 'skids' about 15 km within the first three seconds following the release, consistent with the optical data analyses.

Huba, J. D.; Mitchell, H. G.; Fedder, J. A.; Bernhardt, P. A.

1992-01-01

203

Polymerized complex route to barium titanate powders using barium-titanium mixed-metal citric acid complex  

Microsoft Academic Search

Barium titanate (BaTiOâ) powders were prepared by a polymerized complex method based on the Pechini-type reaction route, wherein a mixed solution of citric acid (CA), ethylene glycol (EG), and barium and titanium ions, with a molar ratio of CA:EG:Ba:Ti = 10:40:1:1, was polymerized to form a transparent resin, which was used as a precursor for BaTiOâ. Characterization of the initial

Momoko Arima; Masato Kakihana; Yoshiyuki Nakamura; Masatomo Yashima; Masahiro Yoshimura

1996-01-01

204

Sol-gel synthesis of ultrafine barium titanate using butyl titanate monomer and barium nitrate and its characterization  

Microsoft Academic Search

Barium titanate is a well-known ferroelectric material (Tc ? 120°C) dominating the dielectric ceramics field for the last five decades and is very widely used in multi-layer capacitors. It is usually prepared via the classical solid state reaction between barium carbonate and titanium dioxide around 1100–1300°C. On the other hand, chemical routes with new precursors are being developed to improve

P. D. Godbole; S. B. Deshpande; S. K. Date; Rashmi Nawathey; S. B. Ogale

1990-01-01

205

Preparation of crystalline beta barium borate thin films on Sr 2+-doped alpha barium borate substrates by liquid phase epitaxy  

Microsoft Academic Search

Thin films of beta barium borate have been prepared by liquid phase epitaxy on Sr2+-doped ?-BaB2O4 (?-BBO, the high temperature phase of barium borate) (001) and (110) substrates. The results of X-ray diffraction indicate that the films show highly (00l) preferred orientation on (001)-oriented substrates while the films grown on (110) substrates are textured with (140) orientation. The crystallinity of

Junfang Liu; Xiaoming He; Changtai Xia; Guoqing Zhou; Shengming Zhou; Jun Xu; W. Yao; Liejia Qian

2006-01-01

206

Change in ionization of barium in calcium and direct determination of barium in calcium by flame atomic absorption spectrometry using the Ba ion resonance line  

NASA Astrophysics Data System (ADS)

Partial pressures of barium at various concentrations of calcium are calculated, and degree of ionization of barium in the nitrous oxide-acetylene flame are determined experimentally and theoretically using the Saha equation. The ionization of barium (50 ?g ml -1 ) in the presence of 10000 ?g ml -1 of calcium was about one third of the theoretically expected value. Using the ion resonance line of barium permits the direct determination of barium down to 3 ppm in calcium matrices by atomic absorption spectrophotometry.

Takada, Takeo; Satho, Mamoru

207

Barium determination in gastric contents, blood and urine by inductively coupled plasma mass spectrometry in the case of oral barium chloride poisoning.  

PubMed

A serious case of barium intoxication from suicidal ingestion is reported. Oral barium chloride poisoning with hypokalemia, neuromuscular and cardiac toxicity, treated with intravenous potassium supplementation and hemodialysis, was confirmed by the determination of barium concentrations in gastric contents, blood, serum and urine using the inductively coupled plasma mass spectrometry method. Barium concentrations in the analyzed specimens were 20.45 µg/L in serum, 150 µg/L in blood, 10,500 µg/L in urine and 63,500 µg/L in gastric contents. Results were compared with barium levels obtained from a non-intoxicated person. PMID:24794066

Lukasik-G??bocka, Magdalena; Sommerfeld, Karina; Han?, Anetta; Grzegorowski, Adam; Bara?kiewicz, Danuta; Gaca, Micha?; Zieli?ska-Psuja, Barbara

2014-07-01

208

[Outpatient withdrawal programme: advanced practice in addictology].  

PubMed

Advanced nursing practices are procedures enabling nurses to carry out, in a structured and predefined manner, tasks usually entrusted to doctors. Introduced in France by the Berland reports of 2003 and 2006, advanced nursing practices remain under-developed in the fields of psychiatry and addictology. In this context, Lille regional and university hospital has set up an outpatient programme for alcohol withdrawal, a scheme coordinated by a nurse, authorised to modifythe treatment dosage according to the patient's clinical state and who is supported by a network of caregivers during the period of medicalised withdrawal. PMID:23951744

Tisserand, Laurence; Mezerette, Caroline; Rolland, Benjamin; Cottencin, Olmer; Vignau, Jean; Muyssen, Arnaud; Danel, Thierry; David, François

2013-01-01

209

42 CFR 419.22 - Hospital outpatient services excluded from payment under the hospital outpatient prospective...  

Code of Federal Regulations, 2012 CFR

...Hospital outpatient services furnished to SNF residents (as defined in § 411.15...care plan (and thus included under the SNF PPS) that are furnished by the hospital “under arrangements” but billable only by the SNF, regardless of whether or not the...

2012-10-01

210

42 CFR 419.22 - Hospital outpatient services excluded from payment under the hospital outpatient prospective...  

Code of Federal Regulations, 2011 CFR

...Hospital outpatient services furnished to SNF residents (as defined in § 411.15...care plan (and thus included under the SNF PPS) that are furnished by the hospital “under arrangements” but billable only by the SNF, regardless of whether or not the...

2011-10-01

211

Comorbid psychiatric disorders in depressed outpatients: Demographic and clinical features  

Microsoft Academic Search

BackgroundThis study evaluated the clinical and sociodemographic features associated with various degrees of concurrent comorbidity in adult outpatients with nonpsychotic major depressive disorder (MDD).

A. John Rush; Mark Zimmerman; Stephen R. Wisniewski; Maurizio Fava; Steven D. Hollon; Diane Warden; Melanie M. Biggs; Kathy Shores-Wilson; Richard C. Shelton; James F. Luther; Brandi Thomas; Madhukar H. Trivedi

2005-01-01

212

Electrooptic and piezoelectric measurements in photorefractive barium titanate and strontium barium niobate  

SciTech Connect

The authors measured the low-frequency (''unclamped'') electrooptic and piezoelectric coefficients in undoped BaTiO/sub 3/ and Sr/sub x/Ba/sub 1-x/Nb/sub 2/O/sub 6/ (chi - 0.61) crystals using interferometric techniques. The contribution of the piezoelectric effect to the Pockels measurement is discussed. For an applied ac electric field in the range 0.1-200 V/cm, the electrooptic and piezoelectric effects are linear in the magnitude of of the applied field and independent of its frequency in the range of 10 Hz-100 kHz. The unclamped electrooptic coefficients of poled BaTiO/sub 3/ single crystals are r/sub 13/ = 19.5 +- 1 pm/V and r/sub 33/ = 97 +- 7 pm/V, and for strontium barium niobate are r/sub 13/ = 47 +- 5 pm/V and r/sub 33/ = 235 +- 21 pm/V, all measured at a wavelength of 514.5 nm and at T = 23/sup 0/C. For the barium titanate samples the measured Pockels coefficient r/sub c/ identical to r/sub 33/ - (n/sub 1//n/sub 3/)/sup 3/r/sub 13/ = 79 +- 6 pm/V in good agreement with the value r/sub c/ = 76 +- 7 pm/V computed from the above values of r/sub 13/ and r/sub 33/, where n/sub 1/ and n/sub 3/ are the ordinary and extraordinary indexes of refraction, respectively. The measured piezoelectric coefficient is d/sub 23/ = +28.7 +- 2 pm/V for barium titanate, and is d/sub 23/ = +24.6 +- 2 pm/V for strontium barium niobate. They also measured the photoreflective coupling of two optical beams in the crystals, and they show that the dependence of the coupling strength on beam polarization is in fair agreement with the measured values of the Pockels coefficients.

Ducharme, S.; Feinberg, J.; Neurgaonkar, R.R.

1987-12-01

213

Nonorganic failure to thrive: an outpatient approach.  

PubMed

This article reviews our experience, as well as the medical literature, regarding the treatment of failure to thrive (FTT) on an outpatient basis. Nonorganic FTT can be accidental, neglectful, or deliberate. Accidental FTT occurs with errors in formula preparation, diet selection, or feeding technique. These errors can usually be corrected by education and demonstration. Deliberate underfeeding is rare, and these children usually require placement in foster care. Neglectful FTT usually occurs because the mother is overwhelmed or psychologically disturbed. Children with neglectful FTT do not automatically require hospitalization. If the degree of FTT is mild to moderate, the mother-child interaction is positive, the mother is not severely disturbed, and the baby has no inflicted injuries or deprivational behavior, the baby can be safely and more economically managed as an outpatient. Management includes new feeding instructions, a stimulation program, social work intervention, home visits by a public health nurse, and weekly weight checks. Most infants respond to this one-month therapeutic trial with an appropriate weight gain. Even after normal weight is attained, many of these families require long-term follow-up to help them deal with multiple psychosocial issues. PMID:2663119

Schmitt, B D; Mauro, R D

1989-01-01

214

Complications with Outpatient Angiography and Interventional Procedures  

SciTech Connect

Purpose: To prospectively identify the complications, and rates of complication, in outpatient angiography and interventional procedures. Methods: There were 1050 consecutive patients, 646 men and 404 women, aged 17-89 years, with a total of 1239 procedures studied in a 2-year period, 1997 to 1999. Results: There were 560 cases of aorto-femoral angiography,resulting in 124 complications (22%), with pain or hematoma in 110.There were 206 cases of neck and cerebral angiography, resulting in 51 complications (25%), with pain and hematoma in 34, transient ischemic attack in 2 and cerebrovascular accident in 1. There were 197 interfentional procedures, with 177 being balloon dilatations, resulting in 68 complications (35%), with 2 having hematomas and 1 having hematoma/abscess requiring active treatment. There were 276 cases having various 'other' procedures (e.g., renal angiography),resulting in 65 complications (24%), with pain and hematoma in 61. No procedure-related death occurred. Eighteen cases (1.5%) had significant complications, with contrast allergy in eight. Conclusion: Outpatient angiography and intervention are relatively safe, with low significant complication rates.

Young, Noel; Chi, Ka-Kit; Ajaka, Joe; McKay, Lesa; O'Neill, Diane; Wong, Kai Ping [Department of Radiology, Westmead Hospital, Westmead, Sydney, NWS, 2145 (Australia)

2002-03-15

215

Outpatient cholecystectomy simulated in an inpatient population.  

PubMed

This prospective clinical trial evaluates the feasibility and safety of elective cholecystectomy in a simulated outpatient protocol in 40 patients. Results were compared with a 19-patient control group managed by conventional postoperative methods. Oral liquids were begun in the recovery room, intravenous fluids were discontinued 4 hours after surgery, and enteral analgesics and antiemetics were provided on the ward. Protocol patients were randomized in a double-blind fashion to receive metoclopramide or placebo after surgery to assess its influence on the early tolerance of oral intake. In the protocol group, nausea without emesis occurred in nine patients (23%); 11 others (28%) had nausea with emesis. This was not significantly different from the control group. Metoclopramide-treated patients did not demonstrate a lower incidence of nausea or emesis but did tolerate oral liquids earlier after surgery than the placebo group (P less than 0.05). After release from recovery, eight protocol patients (20%) requested parenteral narcotics for relief of pain. Postoperative urinary catheterization was required in nine protocol patients (23%) and five control patients (26%). No major complications occurred. Outpatient cholecystectomy is both feasible and safe. Metoclopramide may allow earlier tolerance of enteral liquids postoperatively. PMID:1686701

Treen, D C; Downes, T W; Hayes, D H; McKinnon, W M

1991-01-01

216

Potentially inappropriate medications among elderly Brazilian outpatients.  

PubMed

CONTEXT AND OBJECTIVES In Brazil, few studies have investigated the prevalence of potentially inappropriate medications (PIMs) among elderly outpatients. This study aimed to determine the prevalence of PIMs prescribed for elderly outpatients, identify the PIMs most commonly involved, and investigate whether age, sex and number of medications are related to prescription of such medications. DESIGN AND SETTING Observational descriptive study developed in the Geriatrics Service of the Central Institute of Hospital das Clínicas (HC), Faculdade de Medicina da Universidade de São Paulo (FMUSP), São Paulo, Brazil. METHODS Prescriptions issued to 1,270 elderly patients (? 60 years) were gathered from a database. These prescriptions had been written by geriatricians at a tertiary-level university hospital in São Paulo, Brazil, between February and May 2008. The prescriptions were divided according to sex and age group (60-69, 70-79 and ? 80). The Beers criteria were used to evaluate PIMs. RESULTS Most of the sample comprised women (77%) and the mean age was 80.1 years. The mean prevalence of PIM prescriptions was 26.9%. Female sex and number of medications prescribed were associated with prescription of PIMs. The chance of having a PIM prescription was lower among patients ? 70 years. CONCLUSION The greater prevalence of PIMs was correlated with female sex. The chance of having a PIM prescription was lower among patients ? 70 years and became greater with increasing numbers of medications prescribed (? 7). PMID:23538591

Faustino, Christine Grützmann; Passarelli, Maria Cristina Guerra; Jacob-Filho, Wilson

2013-03-01

217

[Psychopharmacotherapy of out-patient with dementia].  

PubMed

A treatment of 285 out-patients with different types of dementia and concomitant behavioral and psychiatric disorders has been conducted in gerontopsychiatric unit of Moscow mental out-patient clinic No. 10. The sample analyzed consisted of 88 (31%) men and 197 (69%) women, aged from 60 to 98 (mean 74.5 +/- 6.4) years. Each patient had an epidemiological record registering demographical and clinical details as well as information on the drugs and doses prescribed, etc. Tranquillizers and hypnotics used separately or in combination with other drugs were prescribed to 60% of the patients, neuroleptics--to 37%, vasotropics and nootropics--to 35%, antidepressants--to 16%, antiparkinsonic drugs--to 8%, anticolvunsants--3%. Most frequently different drugs have been used in combination (58% of the cases) and in 33% cases--as monotherapy. Only in 9% of the patients psychotropics have not been prescribed. The choice of psychotropics was dependent on the patient age and disease severity. At older age and severe dementia neuroleptics were prescribed to the patients more frequently. PMID:11712266

Safarova, T P; Trifonov, E G; Belova, M Iu

2001-01-01

218

Leachability of barium-radium sulphate sludges  

SciTech Connect

This paper presents results from the first phase of a research program designed to examine the leachability of radium-226 from barium-radium sulphate sludges. Batch leaching tests were performed. Results showed that liquid:solid contact time was relatively unimportant; radium in the sludge was stable in the presence of deionized water with a slight increase in the amount leached per gram of sludge occurring at higher liquid:solid ratios. Not unexpectedly, low and high values of leachant pH increased radium leaching. Both monovalent and divalent salt solutions also increased leaching; however, dissolved radium-226 activity levels in the leachate decreased as leachant molarity increased. For divalent salts this can be explained by the common ion effect; for monovalent salts it is opposite to results expected from solubility considerations. The interpretation of all results is complicated by the fact that in most tests, the amount of radium-226 present in the leachate was lower than the calculated contribution from the mother liquour present with the sludge. This apparent ability of the sludge to absorb radium from solution may be related to dissolution and reprecipitation of the sludge during the leaching tests.

Huck, P.M.; Anderson, B.

1982-01-01

219

Mononuclear barium diketonate polyamine adducts. Synthesis, structures, and use in MOCVD of barium titanate  

SciTech Connect

Mononuclear barium {beta}-diketonate Lewis base adducts have been synthesized by reaction of Ba(thd){sub 2} (thd = 2,2,6,6-tetramethyl-3,5-heptanedionate) with polyamines 1,1,4,7,7-pentamethyldiethylenetriamine (pmdt) and 1,1,4,7,10,10-hexamethyltriethylenetetramine (hmtt). The adducts [Ba(thd){sub 2}(pmdt)] (I) and [Ba(thd){sub 2}(hmtt)] (II) have been characterized by NMR spectroscopy, elemental analyses and single-crystal X-ray diffraction. Compound I crystallizes in the space group P2{sub 1}/c with a = 10.577(3) {angstrom}, b = 23.547(7) {angstrom}, c = 15.963(5) {angstrom}, {beta} = 105.21(2){degrees}, and Z = 4. Compound II crystallizes in the space group P2{sub 1}/c with a = 10.833(6) {angstrom}, b = 20.442(12) {angstrom}, c = 19.404(9) {angstrom}, {beta} = 104.35(4){degrees}, and Z = 4. The adducts are seven- and eight-coordinate, respectively, with all nitrogen atoms of the polyamine bound to a single barium center. Compound I has been used for thin-film growth of BaTiO{sub 3} which has revealed that, compared to Ba(thd){sub 2}(tetraglyme), the polyamine adduct allows a larger temperature window for effective vapor transport. 10 refs., 2 figs., 2 tabs.

Gardiner, R.A.; Gordon, D.C.; Stauf, G.T.; Vaartstra, B.A. [Advanced Technology Materials Inc., Danbury, CT (United States); Ostrander, R.L.; Rheingold, A.L. [Univ. of Delaware, Newark, DE (United States)

1994-11-01

220

59 FR- Barium Sulfate; Toxic Chemical Release Reporting; Community Right-To-Know  

Federal Register 2010, 2011, 2012, 2013

...members of the section 313 metal compound categories...toxicity, neurotoxicity, gene mutations, or chronic toxicity...barium is not a heavy metal (page 32626, column...barium is not a heavy metal, and it is not...

1994-06-28

221

Creating unstable velocity-space distributions with barium injections  

SciTech Connect

Large Debye lengths relative to detector dimensions and the absence of confining walls makes space an attractive laboratory for studying fundamental theories of plasma instabilities. However, natural space plasmas are rarely found displaced from equilibrium enough to permit isolation and diagnosis of the controlling parameters and driving conditions. Furthermore, any plasma or field response to the departure from equilibrium can be masked by noise in the natural system. Active experiments provide a technique for addressing the chicken or egg dilemma. Early thermite barium releases were generally conducted at low altitudes from sounding rockets to trace electric fields passively or to study configuration-space instabilities. One can also study velocity-space instabilities with barium releases. Neutral barium vapor releases wherein a typical speed greatly exceeds the thermal speed can be used to produce barium ion velocity-space distributions that should be subject to a number of microinstabilities. We examine the ion velocity-space distributions resulting from barium injections from orbiting spacecraft and shaped-charges.

Pongratz, M.B.

1983-01-01

222

Acceleration of barium ions near 8000 km above an aurora  

NASA Technical Reports Server (NTRS)

A barium shaped charge, named Limerick, was released from a rocket launched from Poker Flat Research Range, Alaska, on March 30, 1982, at 1033 UT. The release took place in a small auroral breakup. The jet of ionized barium reached an altitude of 8100 km 14.5 min after release, indicating that there were no parallel electric fields below this altitude. At 8100 km the jet appeared to stop. Analysis shows that the barium at this altitude was effectively removed from the tip. It is concluded that the barium was actually accelerated upward, resulting in a large decrease in the line-of-sight density and hence the optical intensity. The parallel electric potential in the acceleration region must have been greater than 1 kV over an altitude interval of less than 200 km. The acceleration region, although presumably auroral in origin, did not seem to be related to individual auroral structures, but appeared to be a large-scale horizontal structure. The perpendicular electric field below, as deduced from the drift of the barium, was temporally and spatially very uniform and showed no variation related to individual auroral structures passing through.

Stenbaek-Nielsen, H. C.; Hallinan, T. J.; Wescott, E. M.; Foeppl, H.

1984-01-01

223

Phenotypic and Behavioral Defects Caused by Barium Exposure in Nematode Caenorhabditis elegans  

Microsoft Academic Search

To examine the possible phenotypic defects from barium exposure, a model organism, Caenorhabditis elegans, was chosen to analyze the multiple toxicities in barium-exposed animals. Endpoints of life span, body size, brood size,\\u000a generation time, head thrash, and body bend were selected for the assessment of barium toxicity. High concentrations (75 ?M\\u000a and 200 ?M) of barium exposure caused severe life-span defects. Body

D.-Y. Wang; Y. Wang

2008-01-01

224

Barium Aspiration in an Infant: A Case Report and Review of Management  

PubMed Central

We describe a case of bilateral inhalation of barium in an infant following a barium swallow for investigation of dusky spells associated with feeds. A bronchoscopy subsequently revealed the presence of a mid-tracheal tracheo-esophageal cleft. To date, little has been reported on barium aspiration in children and there is no consensus for management. We review the literature on barium aspiration, its consequences, and make recommendations for management.

Jackson, M.; Kapur, N.; Goyal, V.; Choo, K.; Sarikwal, A.; Masters, I. B.; Isles, Alan F.

2014-01-01

225

Emission spectrographic determination of barium in sea water using a cation exchange concentration procedure  

USGS Publications Warehouse

A concentration technique employing Dowex 50W cation exchange resin is described for the determination of barium in sea water. The separated barium is precipitated as fluoride together with calcium and strontium and measured by emission spectrographic analysis. The vertical distribution of barium in sea water has been measured in the Caribbean Sea and the Atlantic Ocean. The barium content varied between 7 and 23 ??g. per liter; in two profiles, the lowest concentrations were at a depth of about 1000 meters.

Szabo, B. J.; Joensuu, O.

1967-01-01

226

Evidence-Based Practices in Outpatient Treatment for Eating Disorders  

ERIC Educational Resources Information Center

This study examined the current issues relevant to implementing evidence-based practices in the context of outpatient treatment for eating disorders. The study also examined the effectiveness of an outpatient treatment program for eating disorders among a group of 196 patients presenting with anorexia nervosa, bulimia nervosa, or eating disorder…

Schaffner, Angela D.; Buchanan, Linda Paulk

2010-01-01

227

Patient Satisfaction with Outpatient Psychiatric Services: Qualitative and Quantitative Assessments.  

ERIC Educational Resources Information Center

Quantitative and qualitative measures of patient satisfaction with psychiatric outpatient services were compared in interviews with 263 outpatients. Results indicate that expressions of dissatisfaction appear mainly in open-ended questions. Focus on the questions and acceptability of the data gathering procedure appears to influence responses…

Perreault, Michel; And Others

1993-01-01

228

Bypassing the Local Rural Hospital for Outpatient Procedures  

ERIC Educational Resources Information Center

Purpose: To assess the amount of local rural hospital outpatient department (HOPD) bypass for outpatient procedures. Methods: We analyzed data on colonoscopies and upper gastrointestinal endoscopies performed in the state of Florida over the period 1997-2004. Findings: Approximately, 53% of colonoscopy and 45% of upper gastrointestinal endoscopy…

Saunders, Charles; Bellamy, Gail R.; Menachemi, Nir; Chukmaitov, Askar S.; Brooks, Robert G.

2009-01-01

229

Radiation dose in mass screening for gastric cancer with high-concentration barium sulfate compared with moderate-concentration barium sulfate.  

PubMed

Recently, high-concentration barium sulfate has been developed and is used in many medical facilities. This study compared radiation dose using high-concentration and moderate-concentration barium sulfate. The dose was evaluated with an experimental method using a gastric phantom and with a clinical examination. In the former, the dose and X-ray tube load were measured on the phantom with two concentrations of barium sulfate. In the latter, the fluoroscopic dose-area product (DAP), the radiographic DAP and their sum, the total DAP, were investigated in 150 subjects (112 males, 38 females) treated with both concentrations of barium sulfate. The effective dose was calculated by the software of PCXMC in every case. The results of the experimental evaluation indicated that the effective dose and X-ray tube load were greater with high-concentration barium sulfate than with moderate-concentration barium sulfate (p < 0.05). The results of the clinical evaluation indicated that the fluoroscopic DAP was greater with moderate-concentration barium sulfate than with high-concentration barium sulfate (p < 0.05), but the radiographic DAP was quite the reverse, so the total DAP and effective dose were almost same with both concentrations of barium sulfate. We conclude that high-concentration barium sulfate does not increase radiation dose in mass screening for gastric cancer. PMID:19623859

Yamamoto, K; Azuma, M; Kuroda, C; Kubo, T; Yabunaka, K; Yamazaki, H; Katsuda, T; Takeda, Y

2009-06-01

230

42 CFR 410.62 - Outpatient speech-language pathology services: Conditions and exclusions.  

Code of Federal Regulations, 2010 CFR

... false Outpatient speech-language pathology services: Conditions and exclusions...410.62 Outpatient speech-language pathology services: Conditions and exclusions...pays for outpatient speech-language pathology services only if they are...

2009-10-01

231

42 CFR 410.62 - Outpatient speech-language pathology services: Conditions and exclusions.  

Code of Federal Regulations, 2010 CFR

... false Outpatient speech-language pathology services: Conditions and exclusions...410.62 Outpatient speech-language pathology services: Conditions and exclusions...pays for outpatient speech-language pathology services only if they are...

2010-10-01

232

42 CFR 414.63 - Payment for outpatient diabetes self-management training.  

Code of Federal Regulations, 2010 CFR

...2010-10-01 false Payment for outpatient diabetes self-management training. 414... § 414.63 Payment for outpatient diabetes self-management training. (a...this section, payment for outpatient diabetes self-management training is made...

2010-10-01

233

42 CFR 414.63 - Payment for outpatient diabetes self-management training.  

Code of Federal Regulations, 2010 CFR

...2009-10-01 false Payment for outpatient diabetes self-management training. 414... § 414.63 Payment for outpatient diabetes self-management training. (a...this section, payment for outpatient diabetes self-management training is made...

2009-10-01

234

42 CFR 414.63 - Payment for outpatient diabetes self-management training.  

Code of Federal Regulations, 2013 CFR

...2013-10-01 false Payment for outpatient diabetes self-management training. 414... § 414.63 Payment for outpatient diabetes self-management training. (a...this section, payment for outpatient diabetes self-management training is made...

2013-10-01

235

42 CFR 414.63 - Payment for outpatient diabetes self-management training.  

Code of Federal Regulations, 2010 CFR

...2005-10-01 false Payment for outpatient diabetes self-management training. 414... § 414.63 Payment for outpatient diabetes self-management training. (a...this section, payment for outpatient diabetes self-management training is made...

2005-10-01

236

42 CFR 414.63 - Payment for outpatient diabetes self-management training.  

Code of Federal Regulations, 2011 CFR

...2011-10-01 false Payment for outpatient diabetes self-management training. 414... § 414.63 Payment for outpatient diabetes self-management training. (a...this section, payment for outpatient diabetes self-management training is made...

2011-10-01

237

49 CFR 173.182 - Barium azide-50 percent or more water wet.  

Code of Federal Regulations, 2010 CFR

...2009-10-01 2009-10-01 false Barium azide-50 percent or more water wet. 173.182...Than Class 1 and Class 7 § 173.182 Barium azideâ50 percent or more water wet. Barium azideâ50 percent or more water wet, must be...

2009-10-01

238

49 CFR 173.182 - Barium azide-50 percent or more water wet.  

Code of Federal Regulations, 2010 CFR

...2010-10-01 2010-10-01 false Barium azide-50 percent or more water wet. 173.182...Than Class 1 and Class 7 § 173.182 Barium azideâ50 percent or more water wet. Barium azideâ50 percent or more water wet, must be...

2010-10-01

239

Discrete barite particles and barium as tracers of paleoproductivity in South Atlantic sediments  

Microsoft Academic Search

Geochemical analyses as well as X ray diffraction measurements were carried out on five sediment cores from the eastern Angola Basin and the equatorial divergence of the South Atlantic. Barite concentrations were calculated from total barium concentrations by subtracting the estimated barium background supplied by ``nonbarite'' barium carriers. Barite concentrations assessed by this geochemical method show a good correspondence to

Franz Gingele; Andreas Dahmke

1994-01-01

240

The biological production of marine suspended barite and the barium cycle in the Western Mediterranean Sea  

Microsoft Academic Search

Suspended particulate barium was measured in the Western Mediterranean along 4 profiles sampled during the PHYCEMED 1 cruise in 1981. The non-terrigenous fraction of particulate barium (i.e. excess Ba; Baxs) can account for up to 96% of total barium. This fraction follows the barite settling and dissolution rate model we described earlier for the Atlantic Ocean, confirming barite as the

F. DEHAIRSI; C. E. Lambert; R. Chesselet; N. Risler

1987-01-01

241

Atomic force microscopy studies of twins in yttrium-doped barium titanate  

Microsoft Academic Search

Barium titanate is the main constituent of PTC materials and their electric properties are sensitive to microstructure and defects, in atomic scale, that are significantly affected by processing parameters. The microstructure of barium titanate doped with yttrium was investigated using topographic images obtained by AFM in contact mode. The AFM images of barium titanate doped with yttrium showed the effect

Simoni Maria Gheno; Haroldo Lhou Hasegawa; Pedro Iris Paulin Filho

2006-01-01

242

40 CFR 721.10010 - Barium manganese oxide (BaMnO3).  

Code of Federal Regulations, 2010 CFR

...2009-07-01 2009-07-01 false Barium manganese oxide (BaMnO3). 721.10010...Chemical Substances § 721.10010 Barium manganese oxide (BaMnO3 ). (a...The chemical substance identified as barium manganese oxide (BaMnO3 )...

2009-07-01

243

40 CFR 721.10010 - Barium manganese oxide (BaMnO3).  

Code of Federal Regulations, 2010 CFR

...2010-07-01 2010-07-01 false Barium manganese oxide (BaMnO3). 721.10010...Chemical Substances § 721.10010 Barium manganese oxide (BaMnO3). (a...The chemical substance identified as barium manganese oxide (BaMnO3 )...

2010-07-01

244

Fluid seepage along the San Clemente Fault scarp: basin-wide impact on barium cycling  

Microsoft Academic Search

Material fluxes associated with fluid expulsion at cold seeps and their contribution to oceanographic budgets have not been accurately constrained. Here we present evidence that the barium released at cold seeps along the San Clemente Fault zone may significantly impact the geochemical budget of barium within the basin. Barium fluxes at seep localities on the fault scarp, measured with benthic

Marta E. Torres; James McManus; Chih-An Huh

2002-01-01

245

Outcome Measures for Outpatient Hypoglycemia Prevention Studies  

PubMed Central

Systems are being developed that utilize algorithms to predict impending hypoglycemia using commercially available continuous glucose monitoring (CGM) devices and to discontinue insulin delivery if hypoglycemia is predicted. In outpatient studies designed to test such systems, CGM-measured glycemic indices will not only be important outcome measures of efficacy but, in certain cases, will be the only good outcome. This is especially true in short-term studies designed to reduce hypoglycemia since the event rate for severe hypoglycemic events is too low for it to be a good outcome, and milder hypoglycemia often will be variably detected. Continuous glucose monitoring inaccuracy can be accounted for in the study design by increasing sample size and/or study duration.

Beck, Roy W; Kollman, Craig; Xing, Dongyuan; Buckingham, Bruce A; Chase, H. Peter

2011-01-01

246

Reimbursement for outpatient parenteral antibiotic therapy: update.  

PubMed

Reimbursement policies of third-party payers, including Medicare, reflect a variety of coverage patterns. For a limited group of Medicare patients who are, in Medicare terms, confined to home and require skilled and intermittent care, Medicare Part A covers home care services deemed medically necessary by a physician. Medical equipment and supplies may be included under this coverage. Medicare Part B covers physician services, laboratory tests, and drugs used by out-patients. The latter must be administered directly by a physician or by an employee of a physician with direct supervision by a physician. These restrictions have, in general, prevented reimbursement by Medicare for iv antibiotic therapy in the home. Medicaid, Blue Cross/Blue Shield, various commercial insurers, and health maintenance organizations usually cover iv antibiotics, but in many cases prior approval is necessary for coverage. PMID:2017651

Balinsky, W

1991-01-01

247

Patient selection in outpatient parenteral antimicrobial therapy.  

PubMed

Outcome data as well as reported anecdotal experience over the past 20 years indicate that any infection can be safely treated with parenteral antimicrobials outside the hospital setting. However, outpatient parenteral antimicrobial therapy (OPAT) is a reasonable option only when the final decision for patient selection is based on the judgment of a knowledgeable, experienced physician, and when an experienced qualified provider is available. Criteria to be considered include clinical status, patient acceptance, ability to comply with the plan of treatment, home environment, support systems, and reimbursement. Physician direction and participation in appropriate patient selection will become increasingly important as the growth of managed care increases the importance of cost-savings. PMID:9888025

Nolet, B R

1998-12-01

248

Enhanced Identification of Postoperative Infections among Outpatients  

PubMed Central

We investigated using administrative claims data to identify surgical site infections (SSI) after breast surgery and cesarean section. Postoperative diagnosis codes, procedure codes, and pharmacy information were automatically scanned and used to identify claims suggestive of SSI ("indicators") among 426 (22%) of 1,943 breast procedures and 474 (10%) of 4,859 cesarean sections. For 104 breast procedures with indicators explained in available medical records, SSI were confirmed for 37%, and some infection criteria were present for another 27%. Among 204 cesarean sections, SSI were confirmed for 40%, and some criteria were met for 27%. The extrapolated infection rates of 2.8% for breast procedures and 3.1% for cesarean section were similar to those reported by the National Nosocomial Infection Surveillance program but differ in representing predominantly outpatient infections. Claims data may complement other data sources for identification of surgical site infections following breast surgery and cesarean section.

Miner, Andrew L.; Sands, Kenneth E.; Yokoe, Deborah S.; Freedman, John; Thompson, Kristin; Livingston, James M.

2004-01-01

249

Methods to reduce outpatient non-attendance.  

PubMed

Non-attendance reduces clinic and provider productivity and efficiency, compromises access and increases cost of health care. This systematic review of the English language literature (November 1999-November 2009) compares telephone, mail, text/short message service, electronic mail and open-access scheduling to determine which is best at reducing outpatient non-attendance and providing net financial benefit. Telephone, mail and text/short message service interventions all improved attendance modestly but at varying costs. Text messaging was the most cost-effective of the 3, but its applicability may be limited. Few data are available regarding electronic mail reminders, whereas open-access scheduling is an area of active research. PMID:22475731

Stubbs, Nancy D; Geraci, Stephen A; Stephenson, Priscilla L; Jones, Dianne B; Sanders, Suzanne

2012-09-01

250

Spectroscopy and dynamics of barium-doped helium nanodroplets  

NASA Astrophysics Data System (ADS)

Excitation spectra up to the ionization threshold are reported for barium atoms located on the surface of helium nanodroplets. For states with low principal quantum number, the resonances are substantially broadened and shifted towards higher energy with respect to the gas phase. This has been attributed to the repulsive interaction of the excited atom with the helium at the Franck-Condon region. In contrast, for states with high principal quantum number the resonances are narrower and shifted towards lower energies. Photoelectron and ZEKE spectroscopy reveal that the redshift results from a lowering of the ionization threshold due to polarization of the helium by the barium ionic core. As a result of the repulsive interaction with the helium, excited barium atoms desorb from the surface of the droplets. Only when excited to the 6s6p 1P1 state, which reveals an attractive interaction with the helium, the atoms remain attached to the droplets.

Loginov, Evgeniy; Drabbels, Marcel

2012-04-01

251

Barium uptake and adsorption in diatoms  

NASA Astrophysics Data System (ADS)

Using trace metal-defined culture conditions, we measured the cellular barium concentration in cultures of the diatom Thalassiosira weissflogii. In cultures with low Fe concentration, at a typical surface seawater Ba concentration of 35 to 40 nmol/L, the cellular Ba was 0.5 ?mol/mol P (˜0.04 ?g/g dw), much below all previously published values for phytoplankton. When the Fe concentration in the growth medium was increased, the measured "cellular" Ba increased proportionally to the particulate Fe. Under conditions of ferric hydroxide precipitation, similar particulate Ba concentrations were measured in the absence and the presence of cells for a given concentration of particulate Fe. Thus, the bulk of the particulate Ba in such experiments was not truly intracellular but adsorbed on precipitated Fe hydroxides associated with the cell surface. A similar mechanism likely explains the high cellular Ba concentrations reported by previous investigators who utilized relatively high ratios of Fe to EDTA concentrations in the growth medium, resulting in Fe precipitation. On the basis of our results, it seems highly unlikely that intracellular uptake by living phytoplankton explains the vertical flux of Ba in oceanic waters. But the adsorption of Ba on Fe hydroxides that is seen in laboratory experiments must also occur in the oceans and contribute to Ba transport in the upper part of the water column. To be significant, however, such a mechanism would require that the particles that transport Ba out of the surface have a markedly lower Ba/Fe ratio than is measured in the average suspended material.

Sternberg, Erika; Tang, Degui; Ho, Tung-Yuan; Jeandel, Catherine; Morel, François M. M.

2005-06-01

252

Compact pulse forming line using barium titanate ceramic material.  

PubMed

Ceramic material has very high relative permittivity, so compact pulse forming line can be made using these materials. Barium titanate (BaTiO(3)) has a relative permittivity of 1200 so it is used for making compact pulse forming line (PFL). Barium titanate also has piezoelectric effects so it cracks during high voltages discharges due to stresses developed in it. Barium titanate is mixed with rubber which absorbs the piezoelectric stresses when the PFL is charged and regain its original shape after the discharge. A composite mixture of barium titanate with the neoprene rubber is prepared. The relative permittivity of the composite mixture is measured to be 85. A coaxial pulse forming line of inner diameter 120 mm, outer diameter 240 mm, and length 350 mm is made and the composite mixture of barium titanate and neoprene rubber is filled between the inner and outer cylinders. The PFL is charged up to 120 kV and discharged into 5 ? load. The voltage pulse of 70 kV, 21 ns is measured across the load. The conventional PFL is made up of oil or plastics dielectrics with the relative permittivity of 2-10 [D. R. Linde, CRC Handbook of Chemistry and Physics, 90th ed. (CRC, 2009); Xia et al., Rev. Sci. Instrum. 79, 086113 (2008); Yang et al., Rev. Sci. Instrum. 81, 43303 (2010)], which increases the length of PFL. We have reported the compactness in length achieved due to increase in relative permittivity of composite mixture by adding barium titanate in neoprene rubber. PMID:22129008

Kumar Sharma, Surender; Deb, P; Shukla, R; Prabaharan, T; Shyam, A

2011-11-01

253

Compact pulse forming line using barium titanate ceramic material  

NASA Astrophysics Data System (ADS)

Ceramic material has very high relative permittivity, so compact pulse forming line can be made using these materials. Barium titanate (BaTiO3) has a relative permittivity of 1200 so it is used for making compact pulse forming line (PFL). Barium titanate also has piezoelectric effects so it cracks during high voltages discharges due to stresses developed in it. Barium titanate is mixed with rubber which absorbs the piezoelectric stresses when the PFL is charged and regain its original shape after the discharge. A composite mixture of barium titanate with the neoprene rubber is prepared. The relative permittivity of the composite mixture is measured to be 85. A coaxial pulse forming line of inner diameter 120 mm, outer diameter 240 mm, and length 350 mm is made and the composite mixture of barium titanate and neoprene rubber is filled between the inner and outer cylinders. The PFL is charged up to 120 kV and discharged into 5 ? load. The voltage pulse of 70 kV, 21 ns is measured across the load. The conventional PFL is made up of oil or plastics dielectrics with the relative permittivity of 2-10 [D. R. Linde, CRC Handbook of Chemistry and Physics, 90th ed. (CRC, 2009); Xia et al., Rev. Sci. Instrum. 79, 086113 (2008); Yang et al., Rev. Sci. Instrum. 81, 43303 (2010)], which increases the length of PFL. We have reported the compactness in length achieved due to increase in relative permittivity of composite mixture by adding barium titanate in neoprene rubber.

Kumar Sharma, Surender; Deb, P.; Shukla, R.; Prabaharan, T.; Shyam, A.

2011-11-01

254

Ionization and expansion of barium clouds in the ionosphere  

NASA Technical Reports Server (NTRS)

A recently envelope 3D model is used here to study the motion of the barium clouds released in the ionosphere, including the ionization stage. The ionization and the expansion of the barium clouds and the interaction between the clouds and the background ions are investigated using three simulations: a cloud without a directional velocity, a cloud with an initial velocity of 5 km/s across the B field, and a cloud with initial velocity components of 2 km/s both along and across the B field.

Ma, T.-Z.; Schunk, R. W.

1993-01-01

255

Barium bismuth oxides with ?-, ?-, and ?-Bi 2 O 3 structures  

Microsoft Academic Search

Three new barium bismuth oxides have been synthesized containing 2.15–2.72 mol % BaO with the integer composition BaBi39O59.5, BaBi46O70, and BaBi40O61 and a monoclinic, cubic, and triclinic structure, respectively. These double oxides are, likely, derivatives of ?-, ?-, and\\u000a ?-Bi2O3 phases. The effects of the crucible material and surrounding atmosphere on the course of the synthesis of these new barium

L. A. Klinkova; V. I. Nikolaichik; N. V. Barkovskii; V. K. Fedotov

2007-01-01

256

Outpatient Healthcare Settings and Transmission of Clostridium difficile  

PubMed Central

Background Recent reports suggest that community-associated Clostridium difficile infection (CDI) (i.e., no healthcare facility admission within 90 days) may be increasing in frequency. We hypothesized that outpatient clinics could be an important source for acquisition of community-associated CDI. Methods We performed a 6-month prospective study of CDI patients to determine frequency of and risk factors for skin and environmental shedding during outpatient visits and to derive a prediction rule for positive cultures. We performed a point–prevalence culture survey to assess the frequency of C. difficile contamination in outpatient settings and evaluated the frequency of prior outpatient visits in patients with community-associated CDI. Results Of 67 CDI patients studied, 54 (81%) had 1 or more outpatient visits within 12 weeks after diagnosis. Of 44 patients cultured during outpatient visits, 14 (32%) had skin contamination and 12 (27%) contaminated environmental surfaces. Decreased mobility, fecal incontinence, and treatment with non-CDI antibiotics were associated with positive cultures, whereas vancomycin taper therapy was protective. In patients not on CDI therapy, a prediction rule including incontinence or decreased mobility was 90% sensitive and 79% specific for detection of spore shedding. Of 84 clinic and emergency department rooms cultured, 12 (14%) had 1 or more contaminated environmental sites. For 33 community-associated CDI cases, 31 (94%) had an outpatient visit during the 12 weeks prior to onset of diarrhea. Conclusions Patients with recent CDI present a significant risk for transmission of spores during outpatient visits. The outpatient setting may be an underappreciated source of community-associated CDI cases.

Jury, Lucy A.; Sitzlar, Brett; Kundrapu, Sirisha; Cadnum, Jennifer L.; Summers, Kim M.; Muganda, Christine P.; Deshpande, Abhishek; Sethi, Ajay K.; Donskey, Curtis J.

2013-01-01

257

Synthesis and Properties of Barium Titanate Nanocomposites.  

NASA Astrophysics Data System (ADS)

Electrical properties of BaTiO_3 /liquid composites were investigated. The main thesis objectives were as follows: (1) synthesis of high purity, nanometer-sized BaTiO_3; (2) characterization of the room temperature BaTiO _3 phase as a function of temperature; (3) to evaluate the possibilities of using BaTiO_3 in electrorheological (ER) fluids with both AC and DC fields; and (4) to determine the effects of AC and DC fields on agglomerate fibril formation by using optical microscopy. Powders produced by coprecipitation methods (TAM HPB) and hydrothermal techniques were evaluated in this research. Hydrothermal synthesis in the barium hydroxide octahydrate (BHO) and titanium isopropoxide (TI) system was extensively examined. It was determined that feedstock pH 12 was required for hydrothermal synthesis to ensure proper crystallinity of the resultant powder. The specific surface area increased linearly from 6.7m^2 /g to 14.3m^2/g with increased feedstock concentrations from 0.15M to 1.0M. This change in feedstock concentration also resulted in a drastic change in particle morphology. Particles produced at low feedstock concentrations were large, textured aggregates (5.0 ?m) produced from small crystallites (0.1 ?m). Particles produced at high feedstock concentrations (designated as BTH8) possessed a hexagonal platelet structure which grew slowly along < 111> and rapidly along < 211>. Particle size effects on the room temperature phase were successfully evaluated, as a function of temperature, with X-ray diffraction and dielectric measurements. It was found that the particle possessed the tetragonal phase at room temperature for 700A particles. The phase transition from cubic to tetragonal appeared at 120^ circC for this particle size. TAM HPB and BTH8 both showed an ER response (AC and DC fields) when suspended in silicone oil. The TAM HPB suspension showed a greater ER effect due to the larger particle size. All suspensions were frequency dependent with an optimal range of 20-100Hz. The viscosity of the BTH8 suspension dropped off rapidly above an applied field DC of 6.25kV/cm due to turbulent overturn.

Miller, David Vernon

258

Outpatient bilateral supracostal tubeless percutaneous nephrolithotomy for staghorn calculi  

PubMed Central

Percutaneous nephrolithotomy (PCNL) is the surgical procedure of choice to treat staghorn calculi. Most centres perform PCNL as the traditional inpatient procedure. However, outpatient PCNL has been successfully attempted and represents a feasible method of reducing hospital costs. We report the case of a 35-year-old female who underwent outpatient simultaneous PCNL for bilateral renal staghorn calculi. The patient was discharged in stable condition less than 3 hours following the procedure with minimal discomfort. To the best of our knowledge, this case report is the first to describe a successfully completed outpatient bilateral supracostal tubeless PCNL for staghorn calculi.

Kokorovic, Andrea; Wilson, James W.L.; Beiko, Darren

2014-01-01

259

Ethnic diversity outpatient clinic in paediatrics  

PubMed Central

Background The health status of chronic sick ethnic minority children in the Netherlands is unequal compared with indigenous Dutch children. In order to optimize the health care for these children a specific patient-oriented clinic in ethnic-cultural diversity: the Mosaic Outpatient Clinic (MOC) was integrated in the general Paediatric Outpatient Departments (POPD) of three hospitals in Amsterdam. Methods Feasibility of the MOC, factors influencing the health care process and encountered bottlenecks in health care were studied in ethnic minority children with asthma, diabetes type 1 or metabolic disease originating from Morocco, Turkey and Surinam. Feasibility was determined by the number of patients attended, support from the paediatric medical staff and willingness of the patients to participate. Influences on the health care process comprised parents' level of knowledge of disease, sense of disease severity, level of effort, linguistic skills, health literacy, adherence to treatment and encountered bottlenecks in the health care process. Moreover, the number of admissions and visits to the POPD in the years before, during and after the MOC were analysed. Results In 2006 a total of 189 ethnic minority children were seen. Integration of the MOC within the general POPD of the hospital is feasible. The ability of the parents to speak and understand Dutch was found to be 58%, functional health literacy was 88%; sufficient knowledge of disease and sense of disease severity were 59% and 67%, respectively. The main bottlenecks in the healthcare process: poor knowledge of disease, limited sense of disease severity and low health literacy in the parents proved to be the best predictors for decreased adherence. After attending the MOC there was a decrease in the number of admissions and visits to the POPD for asthma while the number of visits increased in patients with diabetes and the amount of no-shows decreased in patients with a metabolic disease. Conclusion Integration of a MOC in the general POPD is feasible and appreciated by the parents, provides more insight in the problems ethnic minority children and their parents face and shows promising directions for optimizing adherence in these children.

2012-01-01

260

Abundances of 12 metal-rich barium stars (Pereira+, 2011)  

NASA Astrophysics Data System (ADS)

The table contains equivalent width measurements for each individual line of the adopted line list, and the corresponding line parameters. The data analysed consist of FEROS@2.2m spectra of 12 barium stars. The resolution is of about R=45 000, which covers the range from 4500 to 9500Å, which include all the lines analysed. (3 data files).

Pereira, C. B.; Sales Silva, J. V.; Chavero, C.; Roig, F.; Jilinkski, E.

2011-07-01

261

HEALTH EFFECTS OF HUMAN EXPOSURE TO BARIUM IN DRINKING WATER  

EPA Science Inventory

The overall objective of this study was to examine by epidemiologic and supportive laboratory studies, the human health effects associated with ingestion of barium in drinking water exceeding the U.S. drinking water standard of 1.0 mg/l. The incidence of cardiovascular mortality ...

262

Synthesis and surface properties of submicron barium sulfate particles  

NASA Astrophysics Data System (ADS)

Barium sulfate particles were synthesized in the presence of EDTA at room temperature. X-ray diffractometry (XRD), Fourier transform infrared resonance (FTIR) and scanning electron microscopy (SEM) were used to characterize the structure and morphology of BaSO 4 particles. The effect of the preparation parameters on the particle size distribution and morphology was investigated. The conditional formation constants of Ba-EDTA at different pH values were calculated. The results show that the size and morphology of BaSO 4 particles can be effectively controlled by adding EDTA in the precipitation process. Among all the operation conditions, the pH value has significant effect on the particle size. The obtained barium sulfate particles are spherical and well dispersed at pH = 9-10. Zeta potentials of BaSO 4 were measured at different pH. The isoelectric point (IEP) of barium sulfate colloid appears at pH 6.92. The model of the solid-solution interface at a particle of BaSO 4 was presented. The FTIR result indicates that the surface of the prepared BaSO 4 absorbs the functional groups of EDTA, which lower the IEP of the barium sulfate particles.

Zhang, Ming; Zhang, Bao; Li, Xinhai; Yin, Zhoulan; Guo, Xueyi

2011-10-01

263

PROPOSED ORAL REFERENCE DOSE (RFD) FOR BARIUM AND COMPOUNDS  

EPA Science Inventory

The Integrated Risk Information System (IRIS) is a database of EPA's consensus opinion of the human health effects that may result from exposure to various substances found in the environment. A Toxicological Review and IRIS Summary were prepared for barium and compounds in 1998 ...

264

REMOVING BARIUM AND RADIUM THROUGH CALCIUM CATION EXCHANGE  

EPA Science Inventory

The removal of barium (Ba) and radium (Ra), which are found in many groundwater sources, was achieved in laboratory studies with an ion exchange process. In the studies, a strong acid resin in the calcium form effectively removed Ba(+2) and Ra (+2) to meet standards. The resin wa...

265

Removal of barium and radium from groundwater. Environmental research brief  

SciTech Connect

A research project was undertaken to investigate processes for removing barium and radium from drinking water. Special emphasis was placed on ion exchange processes that can be used without adding large concentrations of sodium to the water. The wastes from radium and barium removal processes were also characterized, and processes suitable for treatment of ion-exchange brines were evaluated. The report discusses two ion-exchange processes that can be used for barium and radium removal accompanied by either partial or no hardness removal. The calcium-form, strong-acid ion-exchange resin can be used for barium and radium removal without significant change in hardness or the concentration of other salts. This resin can be regenerated with CaC1/sub 2/ brine. The radium-selective complexer (RSC) will remove radium without altering hardness or other salt concentration. The capacity of this resin for waters with low total dissolved solids (TDS) (<1000 to 2000 mg/L TDS) is in excess of 30,000 pCi/dry g; however, if the TDS is increased to about 40,000 mg/L, the capacity drops to 200 to 300 pCi/dry g. Thus using this resin to remove radium from spent brine does not appear feasible.

Snoeyink, V.L.; Chambers, C.C.; Schmidt, C.K.; Manner, R.F.; Myers, A.G.

1987-02-01

266

Emission Fluctuations of Tungsten-Based Barium Dispenser Cathodes  

Microsoft Academic Search

Emission fluctuations in five different types of tungsten-based barium dispenser cathodes have been measured as functions of both frequency and current density. Two of the cathodes were of the L variety and the remainder of the ``impregnated'' variety. The L cathode spectra show that the emission fluctuations are caused by fluctuations in the number of adsorbed atoms on the tungsten

I. Brodie

1961-01-01

267

Effects of energetic ions on barium strontium titanate crystals  

Microsoft Academic Search

The effects of energetic ions on barium strontium titanate (BST) single crystals have been studied using low-energy He and high-energy Si ions. This investigation indicates that energetic ions significantly change the ferroelectric properties of BST single crystals. While He ion causes sharp increase in dielectric constant, Curie temperature (Tc) and spontaneous polarization (Ps), the Si ions cause slight change in

R. Varatharajan; P. Jayavel; J. Kumar; R. Jayavel; K. Asokan

2000-01-01

268

Measurement of carbon contamination in barium strontium titanate films  

Microsoft Academic Search

Ferroelectric films are being developed for use in DRAMs. The films are often manufactured using spin-on techniques making contamination with residual carbon inevitable. The concentration of carbon is rarely known and its effect not understood. This paper describes the analysis of barium strontium titanate (BST) films for carbon content using both Mass and Energy Dispersive Recoil Spectrometry (RS) with 77

Warren B. Stannard; Peter N. Johnston; James F. Scott; Ian F. Bubb; R. Walker; David D. Cohen; Nick Dytlewski; Jarrod W. Martin

1995-01-01

269

Barium strontium titanate powders prepared by spray pyrolysis  

Microsoft Academic Search

Ultasonic spray pyrolysis (SP) has been investigated for the production of the barium strontium titanate (BST) powders from the polymeric precursors. The processing parameters, such as flux of aerosol and temperature profile inside the furnace, were optimized to obtain single phase BST. The powders were characterized by the methods of X-ray diffraction analysis, SEM, EDS and TEM. The obtained powders

G. Brankovi?; Z. Brankovi?; M. S. Góes; C. O. Paiva-Santos; M. Cilense; J. A. Varela; E. Longo

2005-01-01

270

BARIUM AND RADIUM REMOVAL FROM GROUNDWATER BY ION EXCHANGE  

EPA Science Inventory

The primary objective of this study was to determine the applicability of weak acid exchange resin in the hydrogen form for removal of hardness, barium and radium from groundwater. Weak acid resin in the hydrogen form eliminates the addition of sodium to drinking water. The capac...

271

BARIUM AND RADIUM IN WATER TREATMENT PLANT WASTES  

EPA Science Inventory

Water treatment plants at nine locations (10 plants) in Illinois and Iowa were studied to determine the characteristics and disposal practices for the sludge, brine, and backwash water containing radium (Ra) and/or barium (Ba). The treatment processes in these ten plants include ...

272

Dynamics of a barium release in the magnetospheric tail  

NASA Technical Reports Server (NTRS)

The late time behavior of the May 13, 1985 magnetotail barium cloud is examined. The bulk dynamics of the cloud are studied based on triangulated data and data from Fabry-Perot Doppler velocity measurements. The changes in cloud morphology in relation to the in situ measurements made by the Ion Release Module satellite are discussed.

Mende, S. B.; Swenson, G. R.; Geller, S. P.; Doolittle, J. H.; Haerendel, G.

1989-01-01

273

Optical, mechanical, and thermal properties of barium borate  

Microsoft Academic Search

We report measurements of all the material constants necessary to fully characterize barium borate as a nonlinear optical material. All data was taken on crystals supplied by Professor Chuangtien Chen, Fuzhou, People’s Republic of China. We have determined the crystal structure, the optical absorption, the refractive indices from the UV to the near IR, the thermo-optic coefficients, the nonlinear optical

D. Eimerl; L. Davis; S. Velsko; E. K. Graham; A. Zalkin

1987-01-01

274

Ultra-low temperature processing of barium tellurate dielectrics  

NASA Astrophysics Data System (ADS)

Ceramics, metals and polymers have unique electrical properties that are combined for electronic devices and systems. It necessitates lower processing temperatures for ceramics to be compatible with metal and polymer systems. In this thesis, the synthesis, crystal structure, and dielectric properties of barium tellurate are studied for temperatures between 500 and 900°C. Barium tellurate dielectric ceramics (BaTe4O9, BaTe 2O5, BaTe2O6, BaTeO3, BaTeO 4, and Ba2TeO5) are extensively investigated as new LTCC (Low-Temperature Cofired Ceramics) dielectric systems integrated with low resistivity metal electrodes such as silver and aluminum for microwave application. Studies on the phase formation and crystal structure through thermal analyses (Differential Scanning Calorimetry and Thermogravimetric Analysis, DSC-TGA) and X-ray diffraction phase analysis attest that barium tellurates are formed in the temperature range of 500 ˜ 900°C, through the sequential phase formations from Te-rich to Ba-rich phases. The oxygen coordination of the tellurium ion progresses from TeO4 to TeO6 via TeO 3+1 and TeO3 with increasing barium content as confirmed by structural analysis using infrared spectroscopy. High density barium tellurate ceramics are achieved at temperatures as low as 550°C, which provides the potential to be co-fired with low-melting aluminum metal electrodes in LTCC processing. Dielectric permittivity, loss, and temperature stability of barium tellurate dielectric ceramics were measured from 100 Hz to 13 GHz. Barium tellurate ceramics exhibit excellent microwave dielectric properties with intermediate dielectric permittivities and high quality factors (Q). The dielectric properties at microwave frequencies are epsilonr = 17.5, Qxf = 54700 GHz, TCf = -90 ppm/°C for BaTe4O9, epsilonr = 21, Qxf = 50300 GHz, TCf = -51 ppm/°C for BaTe2O6, epsilonr = 10, Qxf = 34000 GHz, TCf = -54 ppm/°C for BaTeO3, and epsilonr = 17, Qx f = 49600 GHz, TCf = -124 ppm/°C for Ba 2TeO5. Co-firing studies of barium tellurate ceramics with metal electrodes establish new LTCC systems for microwave devices. Chemical compatibility of barium tellurates with silver electrodes was achieved in the barium rich compositions. Ba2TeO5 was found to be covetable with silver electrodes at 850°C by adding CuO and B2O3 as fluxing agents. During the co-firing, a thin interfacial layer of AgTe is metastable according to the thermodynamic equilibrium between the Ba2TeO5-Ag/Ag 2O pseudo-binary system. A breakthrough LTCC technology with aluminum is based upon the ultra-low processing temperature and chemical compatibility of BaTe4O 9, which enables co-firing and fabrication of multilayer ceramic capacitors (MLCCs) with aluminum inner electrodes. The aluminum base metal electrode (BME) BaTe4O9 MLCCs provide good dielectric properties of epsilonr = 17.5, TCepsilon = 100 ppm/°C, and tan delta = 2.1 x 10-3 (Q ? 500) at 1 MHz, which are suitable for the class-1 MLCCs. Aluminum microstrip ring resonators on the BaTe4O9 substrates realized good electromagnetic performance of the new materials at microwave frequency exhibiting resonant frequency of 2.97 GHz and Q factor of 278.

Kwon, Do-Kyun

275

Measuring outcomes in adult outpatient psychiatry.  

PubMed

Despite growing pressure for accountability, mental health professionals continue to debate the value of routinely measuring treatment outcomes. This paper sought to move the outcomes measurement debate forward by reviewing some of the current limitations in outcomes methodology and by providing initial strategies to address them. Using these strategies, we evaluated outcomes for a large diagnostically diverse group of adult outpatients receiving treatment as usual (TAU) within an academic medical centre. Initial self-report and clinician-rated assessments were obtained from 5546 patients, and follow-up data were obtained from 1572 (28%) patients. Using the subset of patients with the follow-up data, we determined treatment effect sizes, rates of reliable improvement (and deterioration) and rates of clinically significant improvement for all patients and for specific diagnostic groups (depression, anxiety, substance abuse, mood disorders not otherwise specified, bipolar and psychotic conditions). TAU outcomes for depression and anxiety were also compared with benchmarks derived from the randomized controlled trial literature. Lastly, the impact of patient or sample characteristics on outcome was explored. Overall, these findings generally support the benefit of TAU over no treatment while also highlighting both the utility and limitations inherent in the current approaches to evaluating treatment outcomes. Suggestions for improving outcomes measurement are provided. PMID:21416558

Blais, Mark A; Sinclair, Samuel J; Baity, Matthew R; Worth, Jonathan; Weiss, Anthony P; Ball, Laurie Ansorge; Herman, John

2012-01-01

276

Outpatient parenteral antibiotic therapy: principles and practice.  

PubMed

Outpatient parenteral antimicrobial therapy (OPAT) refers to the administration of a parenteral antimicrobial in a non inpatient or ambulatory setting with the explicit aim of facilitating admission avoidance or early discharge. Whilst OPAT has predominantly been the domain of the infection specialist, the internal medicine specialist has a key role in service development and delivery as a component of broader ambulatory care initiatives such as "hospital at home". Main drivers for OPAT are patient welfare, reduction of risk of health care associated infection and cost-effective use of hospital resources. The safe practice of OPAT is dependent on a team approach with careful patient selection and antimicrobial management with programmed and adaptable clinical monitoring and assessment of outcome. Gram-positive infections, including cellulitis, bone and joint infection, bacteraemia and endocarditis are key infections potentially amenable to OPAT whilst resistant Gram-negative infections are of increasing importance. Ceftriaxone, teicoplanin, daptomycin and ertapenem lend themselves well to OPAT due to daily (or less frequent) bolus administration, although any antimicrobial may be administered if the patient is trained to administer and/or an appropriate infusion device is employed. Clinical experience from NHS Greater Glasgow and Clyde is presented to illustrate the key principles of OPAT as practised in the UK. Increasingly complex patients with multiple medical needs, the relative scarcity of inpatient resources and the broader challenge of ambulatory care and "hospital at home" will ensure the internal medicine specialist will have a key role in the future development of OPAT. PMID:23602223

Seaton, R A; Barr, D A

2013-10-01

277

[Outpatient parenteral antibiotic treatment: the Italian model].  

PubMed

Though constrained by the lack of standard criteria for patient selection and well defined therapeutic protocols, the Italian model of OPAT is characterized by the home treatment of infections also of moderate severity, chiefly of the lower respiratory tract by means of broad spectrum antibiotics (chiefly beta-lactams) administered intramuscularly. The selection of patient for OPAT remains an individual decision of GPs based on the severity of infection, concomitant diseases, age of the patient, reliability of patients and family, environ- mental and social factors. Such a model has gained broad consensus over the years from patients for different cultural reasons: first, the willingness of patients to participate in the OPAT programmes, second, the concept that home is better than hospital even when you are ill and, third, the fact that parenteral drugs are perceived as more effective than oral ones, probably in contrast with the culture and traditions of other countries (especially northern Europe) where hospitals are still considered the only proper site of care and intramuscular administration is regarded as almost unnatural. No private or insurance reimbursement based OPAT structure exists up to now in Italy or is go. ing to be developed. The main problems in Italy now seems to be: -to define clear protocols and easy criteria for selection of patients enable to OPAT, -to improve what existing by creating and/or qualifying new professionals involved with in- and outpatients (OPAT, early discharge,medical care for special populations.). PMID:12082343

Esposito, S

2001-03-01

278

Buprenorphine Outpatient Outcomes Project: can Suboxone be a viable outpatient option for heroin addiction?  

PubMed Central

Background Opioid dependence treatment traditionally involves methadone clinics, for which dispensing schedules can be cumbersome. Buprenorphine, a partial agonist of the mu receptor and antagonist of the kappa receptor, is a potential outpatient alternative to methadone. Funded by a grant from the State of Maryland's Community Health Resources Commission (CHRC), the Buprenorphine Outpatient Outcomes Project (BOOP) evaluates the outcome of Suboxone (buprenorphine/naloxone) treatment on abstinence from heroin use, rates of emergency room visits and hospitalizations, legal issues, and quality of life. Methods Active heroin users were recruited between June 2007 and June 2010 and induction therapy with Suboxone was instituted during hospitalization. Once discharged, patients were followed as outpatients for maintenance treatment and counseling. Data were collected from electronic medical records, Maryland state legal records, and SF-36® Health Surveys regarding several parameters and patients were categorized according to duration of treatment with Suboxone into one of three groups: <1 month, 1–3 months, and >3 months. Results A total of 220 participants were included in the study. The age range of participants was 18–67 years with most being African American males. Eighty-three (38%) remained in the study for at least 1 month, with 37 of the 83 (45%) remaining in treatment for >3 months. Ten of the 37 (27%) never relapsed after their longest period of abstinence from heroin. During the first year after initiating treatment with Suboxone, hospitalization and emergency room visit rates for all 220 participants decreased by 45 and 23%, respectively, as compared to the year prior to starting treatment. The number of legal charges for drug possession decreased from 70 to 62. Anecdotally, the quality of life seemed to improve in those who were treated with Suboxone for longer periods of time and received regular counseling. Conclusion Overall, Suboxone is an effective treatment method for heroin addiction and is a viable outpatient therapy option. Individualized treatment plans and counseling must be implemented for maximum benefits to be seen. Retention of patients for a long duration of therapy was difficult, but for those who did remain, benefits were seen in overall health, abstinence from heroin use, cognition, and quality of life.

Sittambalam, Charmian D.; Vij, Radhika; Ferguson, Robert P.

2014-01-01

279

Does involuntary outpatient commitment lead to more intensive treatment?  

PubMed

Studies of involuntary outpatient commitment (OPC) among persons with severe mental illness have concluded that OPC is only effective in improving treatment outcomes when it is sustained for 6 months or longer and is combined with frequent outpatient services. This article explores factors that influence the delivery of outpatient services to subjects in a randomized trial of OPC and finds 2 general patterns. Outpatient visits were more frequent among all subjects with apparent clinical need, regardless of study assignment, and among subjects whose OPC was sustained beyond an initial court order. These results suggest that, in practice, sustained OPC represents a consensual agreement between clinicians and the court to more intensively address the complex needs of persons with severe and persistent mental illness. PMID:16700140

Wagner, H Ryan; Swartz, Marvin S; swanson, Jeffrey W; Burns, Barbara J

2003-01-01

280

38 CFR 17.165 - Emergency outpatient dental treatment.  

Code of Federal Regulations, 2010 CFR

...eligibility for outpatient dental care, the treatment will...or the remediation of a dental condition which is determined to be endangering life or health. The provision...persons found ineligible for dental care will not entitle...

2009-07-01

281

38 CFR 17.165 - Emergency outpatient dental treatment.  

Code of Federal Regulations, 2010 CFR

...eligibility for outpatient dental care, the treatment will...or the remediation of a dental condition which is determined to be endangering life or health. The provision...persons found ineligible for dental care will not entitle...

2010-07-01

282

Misdiagnoses Common Among U.S. Outpatients: Review  

MedlinePLUS

... please enable JavaScript. Misdiagnoses Common Among U.S. Outpatients: Review 5 percent of adults are affected each year, ... in the journal BMJ Quality Safety . The researchers' review of the published studies involving U.S. adults showed ...

283

42 CFR 410.60 - Outpatient physical therapy services: Conditions.  

Code of Federal Regulations, 2013 CFR

...section outpatient speech-language pathology services furnished under § 410.62...physical therapy and speech-language pathology services furnished by a comprehensive...physical therapy and speech-language pathology services furnished by a physician...

2013-10-01

284

76 FR 49458 - TRICARE; Hospital Outpatient Radiology Discretionary Appeal Adjustments  

Federal Register 2010, 2011, 2012, 2013

...Secretary TRICARE; Hospital Outpatient Radiology Discretionary Appeal Adjustments AGENCY...opportunity for net adjusted payments for radiology services for which TRICARE payments were...services, DoD has determined that, for radiology services specified in the...

2011-08-10

285

In Situ Emission Microscopy of Scandium\\/Scandium-Oxide and Barium\\/Barium-Oxide Thin Films on Tungsten  

Microsoft Academic Search

The effect of a thin Sc\\/Sc-oxide base layer on Ba\\/Ba-oxide electron emission, surface diffusion, adsorption, and desorption on W is studied using photoelectron emission microscopy and thermionic emission microscopy. A barium-on-scandium structure enhances both photo- and thermionic electron emission.

Joel M. Vaughn; Keith D. Jamison; Martin E. Kordesch

2009-01-01

286

Reliability of drug histories in a specialized geriatric outpatient clinic  

Microsoft Academic Search

To examine the reliability of drug histories of elderly outpatients, records of 122 frail elderly patients in a geriatric\\u000a outpatient evaluation clinic were reviewed. Drug histories were taken by an internist during an initial clinical evaluation\\u000a and by a nurse practitioner during a home visit. Home and office drug lists disagreed in 39 cases (32%). Roughly equal numbers\\u000a of “extra”

J. Edward Jackson; Joe W. Ramsdell; Marian Renvall; Joanne Swart; Harold Ward

1989-01-01

287

Barium toxicity and the role of the potassium inward rectifier current.  

PubMed

Abstract Introduction. Barium is a stable divalent earth metal and highly toxic upon acute and chronic exposure. Barium is present in many products and involved in a number of industrial processes. Barium targets the potassium inward rectifier channels (IRCs) of the KCNJx gene family. Extracellular barium enters and strongly binds the potassium selectivity filter region resulting in blockade of the potassium conducting pore. IRCs are involved in numerous physiological processes of the human body and the most barium sensitive IRCs are highly expressed in all muscle types. Objective. Our purpose was correlate to the clinical outcome of acute barium poisoning in man to current knowledge on IRC function. Methodology. The primary literature search was performed using Medline, Scopus and Google Scholar using search terms "barium AND poisoning"; "barium AND intoxication"; "barium AND case report" and retrieved publications from 1945 through 2012. Additional case reports were retrieved based on the reference lists of the primary hits. Duplicate publications, or publications presenting identical cases were omitted. A total of 39 case reports on acute barium poisoning containing 226 human subjects were identified for review. Results. BaCO3 was the most frequent source and food the most frequent mode of poisoning. Patients suffered from gastrointestinal (vomiting, diarrhea), cardiovascular (arrhythmias, hypertension), neuromuscular (abnormal reflexes, paralysis), respiratory (respiratory arrest/failure) and metabolic (hypokalemia) symptoms. Severe hypokalemia (< 2.5 mM) was observed from barium serum concentrations greater than or equal to 0.0025 mM. Review of the ECG outcomes demonstrated ventricular extrasystoles, ST changes and profound U-waves to be associated strongly with poisoning. Most common treatment modalities were gastric lavage, oral sulfates, potassium i.v. and cardiorespiratory support. 27 patients (12%) died from barium poisoning. Conclusions. Barium is a potent, non-specific inhibitor of the potassium IRC current and affects all types of muscle at micromolar concentrations. Gastrointestinal symptoms frequently occur early in the course of barium poisoning. Hypokalemia resulting from an intracellular shift of potassium and the direct effect of barium at the potassium channels explain the cardiac arrhythmias and muscle weakness which commonly occur in barium poisoning. Treatment of barium poisoning is mainly supportive. Orally administered sulfate salts to form insoluble barium sulfate in the intestinal tract and potassium supplementation have potential but unproven benefit. PMID:24905573

Bhoelan, B S; Stevering, C H; van der Boog, A T J; van der Heyden, M A G

2014-07-01

288

Life Model of Hollow Cathodes Using a Barium Calcium Aluminate Impregnated Tungsten Emitter  

NASA Technical Reports Server (NTRS)

Hollow cathodes with barium calcium aluminate impregnated tungsten emitters for thermionic emission are widely used in electric propulsion. These high current, low power cathodes are employed in ion thrusters, Hall thrusters, and on the International Space Station in plasma contactors. The requirements on hollow cathode life are growing more stringent with the increasing use of electric propulsion technology. The life limiting mechanism that determines the entitlement lifetime of a barium impregnated thermionic emission cathode is the evolution and transport of barium away from the emitter surface. A model is being developed to study the process of barium transport and loss from the emitter insert in hollow cathodes. The model accounts for the production of barium through analysis of the relevant impregnate chemistry. Transport of barium through the approximately static gas is also being treated. Finally, the effect of temperature gradients within the cathode are considered.

Kovaleski, S. D.; Burke, Tom (Technical Monitor)

2001-01-01

289

The crystal growth of barium flouride in aqueous solution  

NASA Astrophysics Data System (ADS)

The kinetics of growth of barium flouride seed crystals were investigated in aqueous solution at 25°C using a constant composition method, in which the supersaturation and ionic strength were maintained constant by the addition of titrants consisting of barium nitrate and potassium flouride solutions. The rates of reaction, studied over a range of supersaturation (? ? 0.4 to 1.0), were interpreted in terms of crystal growth models. A spiral growth mechanism best describes the data, and scanning electron microscopy indicates a three-dimensional growth. In the presence of inorganic additives such as phosphate, however, induction periods precede a morphological two-dimensional crystallization. Coulter Counter results show little crystal agglomeration.

Barone, J. P.; Svrjcek, D.; Nancollas, G. H.

1983-06-01

290

Study of the photovoltaic effect in thin film barium titanate  

NASA Technical Reports Server (NTRS)

Ferroelectric films of barium titanate were synthesized on silicon and quartz substrates, and the photoelectric effect in the structure consisting of metal deposited ferroelectric barium titanate film silicon was studied. A photovoltage with polarity that depends on the direction of the remanent polarization was observed. The deposition of BaTiO3 on silicon and fused quartz substrates was accomplished by an rf sputtering technique. A series of experiments to study the growth of ferroelectric BaTiO3 films on single crystal silicon and fused quartz substrates were conducted. The ferroelectric character in these films was found on the basis of evidence from the polarization electric field hysteresis loops, capacitance voltage and capacitance temperature techniques and from X-ray diffraction studies.

Grannemann, W. W.; Dharmadhikari, V. S.

1982-01-01

291

Nature of the semiconducting properties of ceramic barium titanate  

SciTech Connect

The compound BaTiO/sub 3/ is a dielectric but can be put into the semiconducting state by means of heat treatment in a reducing atmosphere or by doping with a small (0.1-0.5 mole %) amount of oxides of group-III or group-V elements (so-called donor dopants). The effect of dopants on the properties of barium titanate cannot be explained by means of quasi-chemical reactions. The chemical and crystal-chemical properties of dopant oxides and the phase relations in multicomponent BaTiO/sub 3/-dopant oxides systems make it possible correctly to estimate and predict the dependence of the properties of barium titantate on the dopant oxides.

Kvantov, M.A.; Kostikov, Yu.P.; Leikina, B.B.

1988-03-01

292

The Skylab barium plasma injection experiments. I - Convection observations  

NASA Technical Reports Server (NTRS)

Two barium-plasma injection experiments were carried out during magnetically active periods in conjunction with the Skylab 3 mission. The high-explosive shaped charges were launched near dawn on November 27 and December 4, 1973, UT. In both cases, the AE index was near 400 gammas, and extensive pulsating auroras covered the sky. The first experiment, Skylab Alpha, occurred in the waning phase of a 1000-gamma substorm, and the second, Skylab Beta, occurred in the expansive phase of an 800-gamma substorm. In both, the convection was generally magnetically eastward, with 100-km-level electric fields near 40 mV/m. However, in the Alpha experiment the observed orientation of the barium flux tube fit theoretical field lines having no parallel current, but the Beta flux-tube orientation indicated a substantial upward parallel sheet current.

Wescott, E. M.; Stenbaek-Nielsen, H. C.; Davis, T. N.; Peek, H. M.

1976-01-01

293

Observations and theory of the AMPTE magnetotail barium releases  

NASA Technical Reports Server (NTRS)

The barium releases in the magnetotail during the Active Magnetospheric Particle Tracer Explorers (AMPTE) operation were monitored by ground-based imagers and by instruments on the Ion Release Module. After each release, the data show the formation of a structured diamagnetic cavity. The cavity grows until the dynamic pressure of the expanding ions balances the magnetic pressure on its surface. The magnetic field inside the cavity is zero. The barium ions collect on the surface of the cavity, producing a shell. Plasma irregularities form along magnetic field lines draped over the surface of the cavity. The scale size of the irregularities is nearly equal to the thickness of the shell. The evolution and structuring of the diamagnetic cavity are modeled using magnetohydrodynamics theory.

Bernhardt, P. A.; Roussel-Dupre, R. A.; Pongratz, M. B.; Haerendel, G.; Valenzuela, A.

1987-01-01

294

X?ray photoelectron and FTIR spectroscopic investigation of cement doped with barium nitrate  

Microsoft Academic Search

The chemical environment of barium in Portland cement which is doped with barium nitrate was investigated using x?ray photoelectron spectroscopy (XPS) and Fourier Transform Infrared spectroscopy (FTIR). The barium doped cement showed tremendous increases in carbonate content over the undoped cement. An XPS sulfate signal was observed in the cement doped with 20% w\\/w Ba(NO3)2 but not in the 0

H. G. McWhinney; M. W. Rowe; D. L. Cocke; J. D. Ortego

1990-01-01

295

Preparation of barium\\/strontium titanate by solution route  

Microsoft Academic Search

As compared to the conventional solid-state route, solution routes have been reported to produce powders with better homogeneity and controlled morphology. A new solution-based method has been developed to produce fine powders of BaTiO3 and SrTiO3 of high reactivity. In this method an equimolar mixture of solutions of barium nitrate or strontium nitrate and titanium nitrate is heated with suitable

T. V. Vittal Rao; R. V. Kamat; V. N. Vaidya; D. D. Sood

1996-01-01

296

Glycothermal synthesis and characterization of tetragonal barium titanate  

Microsoft Academic Search

Tetragonal barium titanate (BaTiO3) particles were synthesized at temperature as low as 220°C through glycothermal reaction by using Ba(OH)2·8H2O and amorphous titanium hydrous gel as precursors and 1,4-butanediol and water as solvent. XRD, DSC and Raman data support that glycothermal processing method provides a simple low-temperature route for producing tetragonal BaTiO3 nanoparticles without alkaline mineralizers. It is also demonstrated that

Yong-Jin Jung; Dae-Young Lim; Jun-Seok Nho; Seung-Beom Cho; Richard E. Riman; Byeong Woo Lee

2005-01-01

297

Efficiency and mechanism of barium getters at low pressures  

Microsoft Academic Search

The gettering rates of barium getters for oxygen, nitrogen, hydrogen, carbon-monoxide, carbon-dioxide and water vapour are measured in the pressure range between 5 × 10-8 and 5 × 10-5 mm of mercury. Values for the decay in gettering rate during use of the getter are given. It is shown that the gettering effect at these low pressures is almost entirely

S. Wagener

1951-01-01

298

Radium and barium in the Amazon River system  

Microsoft Academic Search

Data for ²²⁶Ra and ²²⁸Ra in the Amazon River system show that the activity of each radium isotope is strongly correlated with barium concentrations. Two trends are apparent, one for rivers which drain shield areas and another for all other rivers. These data suggest that there has been extensive fractionation of U, Th, and Ba during weathering in the Amazon

Willard S. Moore; John M. Edmond

1984-01-01

299

Barium-strontium-titanate etching characteristics in chlorinated discharges  

Microsoft Academic Search

The etching characteristics of barium-strontium-titanate (BST) were investigated using a high-density plasma sustained by surface waves at 190 MHz in Ar\\/Cl2 gas mixtures. The etch rate was examined as a function of both the total gas pressure and the Cl2 fraction in Ar\\/Cl2 using a wafer temperature of 10 °C. The results were correlated to positive ion density and plasma

Luc Stafford; Joëlle Margot; Olivier Langlois; Mohamed Chaker

2003-01-01

300

Sol-Gel Derived Barium-Strontium Titanate Films  

Microsoft Academic Search

Sol-gel techniques for the preparation of barium-strontium titanate (BST) films are discussed. The evolution of film microstructure during heat treatment, and the dielectric properties of BST films prepared from alkoxide solutions and from alkoxide solutions modified by 2-ethylhexanoic acid were studied. It is shown that the extent of the modification of the precursors by 2-ethylhexanoic acid changes the precursor molecular

V. A. Vasiljev; K. A. Vorotilov; M. I. Yanovskaya; L. I. Solovjeva; A. S. Sigov

1998-01-01

301

Sol-gel preparation of barium strontium titanate thin films  

Microsoft Academic Search

Barium strontium titanate, ((BaxSr1-x)TiO 3), thin films of various compositions were prepared by a spin coating technique. Processing parameters were optimized to develop stable solutions which yielded crack-free films with relatively low crystallization temperatures. XRD and thermal analysis techniques were used to characterize the films and gels. The dielectric constant and dissipation factor of the films were measured as a

D. Tahan; A. Safari; L. C. Klein

1994-01-01

302

Nonlinear dielectric properties of barium strontium titanate ceramics  

Microsoft Academic Search

In barium strontium titanate (BaxSr1?xTiO3) ceramics, obvious tunabilities of both dielectric permittivity and loss tangent under external DC bias field were observed. The temperature and frequency dependences of nonlinear dielectric properties were studied. Polarizing process was carried out to evaluate the influence of domain reorientation on dielectric nonlinearity in the ferroelectric polycrystalline samples. The nonlinear variation of dielectric properties under

Xiaoyong Wei; Xi Yao

2003-01-01

303

Texture and Microstructural Development in Gelcast Barium Hexaferrite  

SciTech Connect

The development of texture in barium hexaferrite by templated grain growth was studied as a function of the Fe2O3/BaCO3 ratio, B2O3 additions in the starting materials, and sintering temperature. A magnetic field was used to orient the template particles during the gelcasting process. Excess BaCO3 resulted in abnormal grain growth and maximized texture, while B2O3 additions promoted coarsening, but no abnormal grain growth.

Hovis, David B. [Northwestern University, Evanston; Faber, Katherine T. [Northwestern University, Evanston; Kenik, Edward A [ORNL

2008-01-01

304

The positive temperature coefficient of resistivity in barium titanate  

Microsoft Academic Search

Positive temperature coefficient of resistivity (PTCR) materials have become very important components, and among these materials\\u000a barium titanate compounds make up the most important group. When properly processed these compounds show a high PTCR at the\\u000a Curie temperature (the transition temperature from the ferroelectric tetragonal phase to the paraelectric cube phase). In\\u000a the first half of this paper literature related

B. Huybrechts; K. Ishizaki; M. Takata

1995-01-01

305

Elastic and Piezoelectric Coefficients of Single-Crystal Barium Titanate  

Microsoft Academic Search

Mechanical resonance and antiresonance frequencies were measured on barium titanate single-crystal elements maintained under electric dc bias from -50°C to +150°C. A complete set of elastic, piezoelectric, and dielectric constants of the tetragonal modification at 25°C is obtained. The elastic compliances show substantial deviation from cubic symmetry. Measurements in the orthorhombic state show longitudinal compliance four times higher than in

Don Berlincourt; Hans Jaffe

1958-01-01

306

Barium–borate–flyash glasses: As radiation shielding materials  

Microsoft Academic Search

The attenuation coefficients of barium–borate–flyash glasses have been measured for ?-ray photon energies of 356, 662, 1173 and 1332keV using narrow beam transmission geometry. The photon beam was highly collimated and overall scatter acceptance angle was less than 3°. Our results have an uncertainty of less than 3%. These coefficients were then used to obtain the values of mean free

Sukhpal Singh; Ashok Kumar; Devinder Singh; Kulwant Singh Thind; Gurmel S. Mudahar

2008-01-01

307

Pockels response in calcium barium niobate thin films  

NASA Astrophysics Data System (ADS)

The electro-optical response of calcium barium niobate ferroelectric thin films is characterized using a single beam setup in reflection geometry. Clear evidence of a Pockels response together with an r33 coefficient as high as 130 pm/V is found. This large value and the high Curie temperature of the material under study (>250 °C) can be considered as a promising feature for the fabrication of hybrid, integrated electro-optical modulators working at a high repetition rate.

Helsten, R.; Razzari, L.; Ferrera, M.; Ndione, P. F.; Gaidi, M.; Durand, C.; Chaker, M.; Morandotti, R.

2007-12-01

308

Isotopic Masses of Hydrogen, Chlorine, Barium, Cerium, and Neodymium  

Microsoft Academic Search

The 16-in. double-focusing mass spectrometer at the University of Minnesota has been employed to measure the atomic mass of H1 and the atomic masses and isotopic mass differences of chlorine, barium, cerium, and neodymium. Recent improvements in instrumentation have increased the precision of both narrow and wide doublet measurements. The doublet C11H22-C12H10 was used to relate the H1 mass directly

Jay L. Benson; Walter H. Johnson

1966-01-01

309

Low incidence of spontaneous bacterial peritonitis in asymptomatic cirrhotic outpatients  

PubMed Central

AIM: To compare the incidence of spontaneous bacterial peritonitis in cirrhotic outpatients and inpatients undergoing therapeutic paracentesis METHODS: From January 1 to May 31, 2004, 1041 patients from 70 different hospitals underwent 2123 therapeutic abdominal paracentesis (AP) performed as a outpatient procedure in 355 and as inpatient procedure in 686 cases respectively. The following parameters were compared prospectively between outpatients and inpatients: spontaneous bacterial peritonitis (SBP) prevalence, age, gender, cause of cirrhosis, symptoms, score and grade according to Child-Pugh classification, cirrhosis complications, antibiotics treatment, serum creatinine, platelet count and ascitic protein concentration. RESULTS: SBP was observed in 91 patients. In the whole population the SBP prevalence was 8.7% (95%CI: 7.2-10.6) it was 11.7% (95%CI: 9.5-14.3) in inpatients and 3.1% (95%CI: 1.7-5.5) in outpatients (P < 0.00001). SBP prevalence was 8.3% (95%CI: 4.3-15.6) in symptomatic outpatients vs 1.2% (95%CI: 0.4-3.4) in asymptomatic outpatients (P < 0.002). Patients undergoing outpatient AP were significantly different from those undergoing inpatient AP; they were older (61.1 ± 11.1 years vs 59.4 ± 11.7 years; P = 0.028), cause of cirrhosis was less often alcohol (83 .7 vs 88.2%; P < 0.001), Child-Pugh score was lower (8.9 vs 10.1; P < 0.001) and more often B than C (63.7% vs 38%; P < 0.001). In addition, in outpatients the platelet count was higher (161 ± 93 Giga/L vs 143 ± 89 Giga/L; P = 0.003), serum total bilirubin concentration was lower (38.2 ± 60.7 ?mol/L vs 96.3 ± 143.3 ?mol/L; P < 0.0001), and ascitic protein concentration higher (17.9 ± 10.7 g/L vs 14.5 ± 10.9 g/L; P < 0.001) than in inpatients. CONCLUSION: In asymptomatic cirrhotic outpatients, the incidence of spontaneous bacterial peritonitis is low thus exploratory paracentesis could be avoided in these patients without significant risk.

Cadranel, Jean-Francois; Nousbaum, Jean-Baptiste; Bessaguet, Christophe; Nahon, Pierre; Nguyen-Khac, Eric; Moreau, Richard; Thevenot, Thierry; Silvain, Christine; Bureau, Christophe; Nouel, Olivier; Pilette, Christophe; Paupard, Thierry; Pauwels, Arnaud; Sapey, Thierry; Grange, Jean-Didier; Tran, Albert

2013-01-01

310

Optical, mechanical, and thermal properties of barium borate  

SciTech Connect

We report measurements of all the material constants necessary to fully characterize barium borate as a nonlinear optical material. All data was taken on crystals supplied by Professor Chuangtien Chen, Fuzhou, People's Republic of China. We have determined the crystal structure, the optical absorption, the refractive indices from the UV to the near IR, the thermo-optic coefficients, the nonlinear optical or coefficients, the resistance to laser damage, the elastic constants, the thermal expansion, thermal conductivity and dielectric constants, and the fracture toughness. This data is used to evaluate barium borate for a variety of applications. We find that, in general, barium borate has a low acceptance angle, and that despite its higher optical nonlinearity, it is therefore not significantly more efficient than other commonly available materials, except in the UV below 250 nm. On the other hand, it has a high damage threshold, it is physically robust, it has good UV and IR transparency, and it has excellent average power capability. It permits deep UV generation, and has great potential for generating tunable visible and IR light as an optical parametric amplifier.

Eimerl, D.; Davis, L.; Velsko, S.; Graham, E.K.; Zalkin, A.

1987-09-01

311

Structure and multiferroic properties of barium hexaferrite ceramics  

NASA Astrophysics Data System (ADS)

Simultaneous occurrence of large ferroelectricity and strong ferromagnetism have been observed in barium hexaferrite ceramics. Barium hexaferrite (BaFe12O19) powders with hexagonal crystal structure were successfully synthesized in a polymer precursor method using barium acetate and ferric acetylacetonate as the precursors. The powders were pressed into pellets which were sintered into ceramics at 1200 °C and 1300 °C for 1 h. The structure and morphology of the ceramics were examined using X-ray diffraction and field emission scanning electron microscopy. Large spontaneous polarization was observed in the BaFe12O19 ceramics at room temperature, revealing a clear ferroelectric hysteresis loop. The maximum remanent polarization of the BaFe12O19 ceramic was estimated approximately 11.8 ?C cm-2. The FeO6 octahedron in its perovskite-like hexagonal unit cell and the shift of Fe3+ off the center of octahedron are suggested to be the origin of the polarization in BaFe12O19. The BaFe12O19 ceramics also showed strong ferromagnetism at room temperature.

Tan, Guolong; Chen, Xiuna

2013-02-01

312

Cost allocation patterns between hospital inpatient and outpatient departments.  

PubMed Central

OBJECTIVE. This study examines changes in hospitals' cost allocation patterns between inpatient and outpatient departments in response to the implementation of the prospective payment system. DATA SOURCES AND STUDY SETTINGS. The analysis was carried out using data for 3,961 hospitals obtained from the Medicare Cost Reports and from the American Hospital Association for the years 1984 through 1988. STUDY DESIGN. A total operating cost function was estimated on the two outputs of discharges and outpatient visits. The estimation results were instrumental in disaggregating costs into inpatient and outpatient components. This was done cross-sectionally for each of the five years. PRINCIPAL FINDINGS. Comparison of this cost breakdown with that of hospital revenue provides evidence of distinct patterns in which nonteaching, rural, and small hospitals increasingly allocated greater costs to outpatient departments than did large, urban, and teaching hospitals. CONCLUSIONS. The results suggest that small rural hospitals turned to the outpatient side in the face of tough economic challenges over the period of study. Because differences in cost allocation patterns occur by particular hospital category, analyses that rely on accounting cost or revenue data in order to identify cost differences among those same categories may come to erroneous conclusions. In particular, because teaching hospitals apportion costs more heavily on the inpatient side, cost allocation differences cause upward bias in the PPS medical education adjustment.

Carey, K

1994-01-01

313

Prevalence of depressive and anxiety disorders in Chinese gastroenterological outpatients  

PubMed Central

AIM: To investigate the prevalence and physicians’ detection rate of depressive and anxiety disorders in gastrointestinal (GI) outpatients across China. METHODS: A hospital-based cross-sectional survey was conducted in the GI outpatient departments of 13 general hospitals. A total of 1995 GI outpatients were recruited and screened with the Hospital Anxiety and Depression Scale (HADS). The physicians of the GI departments performed routine clinical diagnosis and management without knowing the HADS score results. Subjects with HADS scores ? 8 were subsequently interviewed by psychiatrists using the Mini International Neuropsychiatric Interview (MINI) to make further diagnoses. RESULTS: There were 1059 patients with HADS score ? 8 and 674 (63.64%) of them undertook the MINI interview by psychiatrists. Based on the criteria of Diagnostic and Statistical Manual of Mental Disorders (4th edition), the adjusted current prevalence for depressive disorders, anxiety disorders, and comorbidity of both disorders in the GI outpatients was 14.39%, 9.42% and 4.66%, respectively. Prevalence of depressive disorders with suicidal problems [suicide attempt or suicide-related ideation prior or current; module C (suicide) of MINI score ? 1] was 5.84% in women and 1.64% in men. The GI physicians’ detection rate of depressive and anxiety disorders accounted for 4.14%. CONCLUSION: While the prevalence of depressive and anxiety disorders is high in Chinese GI outpatients, the detection rate of depressive and anxiety disorders by physicians is low.

Li, Xiao-Jing; He, Yan-Ling; Ma, Hong; Liu, Zhe-Ning; Jia, Fu-Jun; Zhang, Ling; Zhang, Lan

2012-01-01

314

Waiting time in outpatient care: a study of divergent perspectives.  

PubMed

This article documents a survey of waiting time in the outpatient setting. The study was conducted in March 1988 at Gorgas Army Community Hospital, located in the old Panama Canal Zone in the Republic of Panama. Two groups were surveyed. Patients were group one (M = 450) and physicians were group two (N = 55). Of four factors questioned as being the biggest problem in outpatient clinics, group one had a response rate of 83.3% for waiting time, compared with group two's 9.1%. Chi-square analysis was used to test the independence of the two groups at the 1% level of significance. The study reveals that there is a significant difference between patients' and physicians' views of waiting time. This finding provides an enlightening perspective in an effort to understand and to initiate methods to improve waiting time in outpatient medicine. PMID:2505168

Piper, L E

1989-08-01

315

Pitfalls in the delivery of outpatient intravenous therapy.  

PubMed

Recent articles promoting the advantages of intravenous antibiotic therapy and total parenteral nutrition for use in home health care patients have spawned a multitude of commercial and hospital-based programs dedicated to providing such therapies in outpatient settings. Only since the establishment of these programs has there evolved an increasing familiarity with adverse experiences and pitfalls in the provision of outpatient care. Significant errors have been made in the areas of patient and disease admission criteria, antibiotic regimens, medicolegal concepts, medical and hospital politics, and financial reimbursement. This article explores the pitfalls intrinsic to the delivery of outpatient parenteral therapies and focuses on the need for diligence in program coordination, multidisciplinary involvement, and education in averting those pitfalls. PMID:4006719

Goldenberg, R I

1985-04-01

316

The infusion center: a model for outpatient parenteral antibiotic therapy.  

PubMed

Outpatient parenteral treatment of infectious diseases has developed from primitive beginnings to its present state as the standard of care in many areas. The large infusion center described here is headed by physicians who specialize in infectious diseases and occupies a free-standing building where the pharmacy, laboratory, physicians' offices, examination rooms, and finance departments are centralized for efficiency, flexibility, and convenience. Each patient is seen by a physician, pharmacist, and nurse; these health care professionals share data about the patient and offer 24-hour coverage of questions and emergencies. Treating a wide variety of diseases, physicians utilize their experience and the center's intercommunication system to choose drugs most suitable for outpatient use and to carry on research. Costs in the center run between 50% and 60% lower than those in the hospital. Reimbursement, although difficult in the past, has improved considerably, but some third-party payers, including Medicare, have not reimbursed for outpatient intravenous antibiotic therapy. PMID:2017641

Poretz, D M

1991-01-01

317

Effective use of physician extenders in an outpatient otolaryngology setting.  

PubMed

Physician extenders may be a valuable asset to an outpatient otolaryngology practice. The adjunctive care provided by physician extenders appears to be cost effective and has the advantages of increasing patient education, promoting physician productivity, and improving management of chronic conditions. Practice types that may benefit from advanced practice providers include group or solo practices with high demand or who need improved efficiency. We discuss five different practice models for incorporation of advanced practice providers in an outpatient otolaryngology practice. These models include scribe, collaborative, limited independent, partial independent, and near complete independent practice and are based primarily on the autonomy level of the physician extender. In additon, we examine available literature discussing the cost effectiveness of physician extenders used in an outpatient setting. PMID:21993846

Norris, Byron; Harris, Tristen; Stringer, Scott

2011-11-01

318

Predictors of Participation in Community Outpatient Psychosocial Rehabilitation in Schizophrenia  

Microsoft Academic Search

This study investigated demographic, clinical and neurocognitive factors predicting drop-out from an intensive, community\\u000a outpatient psychosocial rehabilitation program for people with schizophrenia or schizoaffective disorder. One-hundred and\\u000a twenty-seven outpatients with DSM-IV schizophrenia or schizoaffective disorder participated. Demographic variables of age,\\u000a sex, education and race\\/ethnicity were recorded and formal symptom measures and a neurocognitive assessment consisting of\\u000a measures of crystallized verbal

Matthew M. Kurtz; Jennifer Rose; Bruce E. Wexler

319

Efficacy, safety, and applicability of outpatient treatment for diverticulitis  

PubMed Central

Acute diverticulitis of the colon represents a significant burden for national health systems, in terms of direct and indirect costs. Although current guidelines recommend use of antibiotics for the outpatient treatment of acute uncomplicated diverticulitis, evidence for this is still lacking. Hence, significant effort is now being made to identify the appropriate therapeutic approach to treat and prevent relapses of diverticulitis. Outpatient treatment has been identified as a safe and effective therapeutic approach in up to 90% of patients with uncomplicated diverticulitis. It allows important costs saving to health systems without a negative influence on quality of life for patients with uncomplicated diverticulitis, and reduces health care costs by more than 60%.

Tursi, Antonio

2014-01-01

320

Chemotherapy outpatients’ unplanned presentations to hospital: a retrospective study  

Microsoft Academic Search

Goal of work  This descriptive, retrospective study sought to identify the nature and magnitude of chemotherapy outpatients’ unplanned presentations\\u000a and admissions to the emergency department and\\/or cancer centre at a large metropolitan tertiary hospital, and to explore\\u000a the antecedents to those presentations.\\u000a \\u000a \\u000a \\u000a \\u000a Patients and methods  Retrospective data were collected for outpatients who made an unplanned presentation to a large metropolitan hospital in

Heather McKenzie; Lillian Hayes; Kathryn White; Keith Cox; Judith Fethney; Maureen Boughton; Jo Dunn

2011-01-01

321

A review of the health impacts of barium from natural and anthropogenic exposure.  

PubMed

There is an increasing public awareness of the relatively new and expanded industrial barium uses which are potential sources of human exposure (e.g., a shale gas development that causes an increased awareness of environmental exposures to barium). However, absorption of barium in exposed humans and a full spectrum of its health effects, especially among chronically exposed to moderate and low doses of barium populations, remain unclear. We suggest a systematic literature review (from 1875 to 2014) on environmental distribution of barium, its bioaccumulation, and potential and proven health impacts (in animal models and humans) to provide the information that can be used for optimization of future experimental and epidemiological studies and developing of mitigative and preventive strategies to minimize negative health effects in exposed populations. The potential health effects of barium exposure are largely based on animal studies, while epidemiological data for humans, specifically for chronic low-level exposures, are sparse. The reported health effects include cardiovascular and kidney diseases, metabolic, neurological, and mental disorders. Age, race, dietary patterns, behavioral risks (e.g., smoking), use of medications (those that interfere with absorbed barium in human organism), and specific physiological status (e.g., pregnancy) can modify barium effects on human health. Identifying, evaluating, and predicting the health effects of chronic low-level and moderate-level barium exposures in humans is challenging: Future research is needed to develop an understanding of barium bioaccumulation in order to mitigate its potential health impacts in various exposured populations. Further, while occupationally exposed at-risk populations exist, it is also important to identify potentially vulnerable subgroups among non-occupationally exposed populations (e.g., elderly, pregnant women, children) who are at higher risk of barium exposure from drinking water and food. PMID:24844320

Kravchenko, Julia; Darrah, Thomas H; Miller, Richard K; Lyerly, H Kim; Vengosh, Avner

2014-08-01

322

The action of caffeine on inward barium current through voltage-dependent calcium channels in single rabbit ear artery cells  

Microsoft Academic Search

The effect of caffeine on inward current carried by barium ions through voltage-dependent calcium channels has been investigated in single rabbit ear artery cells using whole-cell voltage-clamp techniques. Caffeine (1 –30 mM) caused a rapid and reversible concentration-dependent blockade of barium current and a related compound, 3-isobutyl-1-methylxanthine (IBMX), was a more potent inhibitor of barium current. Caffeine-induced inhibition of barium

A. D. Hughes; S. Hering; T. B. Bolton

1990-01-01

323

42 CFR 484.38 - Condition of participation: Qualifying to furnish outpatient physical therapy or speech pathology...  

Code of Federal Regulations, 2010 CFR

...outpatient physical therapy or speech pathology services. 484.38 Section...outpatient physical therapy or speech pathology services. An HHA that wishes...outpatient physical therapy or speech pathology services must meet all...

2009-10-01

324

42 CFR 484.38 - Condition of participation: Qualifying to furnish outpatient physical therapy or speech pathology...  

Code of Federal Regulations, 2010 CFR

...outpatient physical therapy or speech pathology services. 484.38 Section...outpatient physical therapy or speech pathology services. An HHA that wishes...outpatient physical therapy or speech pathology services must meet all...

2010-10-01

325

38 CFR 17.95 - Outpatient medical services for Department of Veterans Affairs employees and others in emergencies.  

Code of Federal Regulations, 2013 CFR

...false Outpatient medical services for Department...employees and others in emergencies. 17.95 Section...95 Outpatient medical services for Department...employees and others in emergencies. Outpatient medical services for...

2013-07-01

326

42 CFR 484.38 - Condition of participation: Qualifying to furnish outpatient physical therapy or speech pathology...  

Code of Federal Regulations, 2013 CFR

...outpatient physical therapy or speech pathology services. 484.38 Section 484...outpatient physical therapy or speech pathology services. An HHA that wishes to furnish outpatient physical therapy or speech pathology services must meet all the...

2013-10-01

327

38 CFR 17.56 - VA payment for inpatient and outpatient health care professional services at non-departmental...  

Code of Federal Regulations, 2013 CFR

...payment for inpatient and outpatient health care professional services at non-departmental...payment for inpatient and outpatient health care professional services at non-departmental...outpatient care. (a) Except for health care professional services...

2013-07-01

328

Development of a Fluorescence-Based in-situ Barium Sensor.  

National Technical Information Service (NTIS)

Biogeochemical characteristics render barium a useful tracer of riverine inputs on 10-100 kms spatial scales. Ultimately we seek to determine of barium in seawaters by an in-situ technique. An intermediate step toward achieving that goal is the developmen...

K. K. Falkner

1999-01-01

329

Synthesis and crystal structure of a barium complex with pyruvic acid isonicotinoyl hydrazone  

Microsoft Academic Search

A barium complex with pyruvic acid isonicotinoyl hydrazone (H2L) has been synthesized and its crystal structure was determined by X-ray diffraction analyses. There is one complex unit, Ba(HL)2(H2O), with eight lattice water molecules in the asymmetric unit. The nine-coordinated barium has a distorted, monocapped square antiprism configuration.

Kaibei Yu

1996-01-01

330

Electron microscopy of barium strontium titanate nanostructures in the aluminum oxide matrix  

NASA Astrophysics Data System (ADS)

Electron microscopy has revealed the mechanism of formation of barium strontium titanate nanostructures during crystallization in the bulk of pores of the aluminum matrix. The nanostructures have the form of nanotubes or nanocolumns 100-200 nm in diameter and a few microns long, which are formed by barium strontium titanate crystals 3-100 nm in size.

Zhigalina, O. M.; Vorotilov, K. A.; Kuskova, A. N.; Sigov, A. S.

2009-07-01

331

THE BARIUM FLUORIDEURANIUM TETRAFLUORIDE AND THE STRONTIUM FLUORIDE THORIUM TETRA-FLUORIDE SYSTEM  

Microsoft Academic Search

ined by x-ray diffraction and density- measurements. The tetrafluoride ; dissolves in difluoride to the extent of about 25 M%, the unit-cell constant ; decreasing in the former and increasing in the latter system. Barium and ; strontium fluorides dissolve in barium uranium hexafluoride and strontium thorium ; hexafluoride respectively to the extent of about 20 M % with the

R. W. M. DEye; I. F. Ferguson

1959-01-01

332

Obtaining Monocrystals of Solid Solutions of Barium and Strontium Titanates and Their Dielectric and Optical Properties.  

National Technical Information Service (NTIS)

In this paper monocrystals of solid solutions of barium and strontium titanates are described. The growing of the monocrystals was done in a platinum crucible from a solution of a mixture of barium and strontium titanates in potassium fluoride. The potass...

A. L. Khodakov M. L. Sholokhovich E. G. Fesenko O. P. Kramarov

1968-01-01

333

Investigations of Indium Tin Oxide—Barium Strontium Titanate–Indium Tin Oxide Heterostructure for Tunability  

Microsoft Academic Search

This letter reports for the first time the interesting behavior of the interface between indium tin oxide (ITO) as a high resistive electrode and barium strontium titanate tunable paraelectric thin film material. The interface is consisting of barium strontium titanate (BST) thin film dielectric material sandwiched between two ITO high resistive layers, all are integrated above glass substrate. When dc

Mahmoud Al Ahmad; Ludovic Salvagnac; Dominique Michau; Mario Maglione; Robert Plana

2008-01-01

334

The effect of barium on perceptions of taste intensity and palatability.  

PubMed

Barium may affect the perception of taste intensity and palatability. Such differences are important considerations in the selection of dysphagia assessment strategies and interpretation of results. Eighty healthy women grouped by age (younger, older) and genetic taste status (supertaster, nontaster) rated intensity and palatability for seven tastants prepared in deionized water with and without 40 % w/v barium: noncarbonated and carbonated water, diluted ethanol, and high concentrations of citric acid (sour), sodium chloride (salty), caffeine (bitter), and sucrose (sweet). Mixed-model analyses explored the effects of barium, taster status, and age on perceived taste intensity and acceptability of stimuli. Barium was associated with lower taste intensity ratings for sweet, salty, and bitter tastants, higher taste intensity in carbonated water, and lower palatability in water, sweet, sour, and carbonated water. Older subjects reported lower palatability (all barium samples, sour) and higher taste intensity scores (ethanol, sweet, sour) compared to younger subjects. Supertasters reported higher taste intensity (ethanol, sweet, sour, salty, bitter) and lower palatability (ethanol, salty, bitter) than nontasters. Refusal rates were highest for younger subjects and supertasters, and for barium (regardless of tastant), bitter, and ethanol. Barium suppressed the perceived intensity of some tastes and reduced palatability. These effects are more pronounced in older subjects and supertasters, but younger supertasters are least likely to tolerate trials of barium and strong tastant solutions. PMID:24037100

Dietsch, Angela M; Solomon, Nancy Pearl; Steele, Catriona M; Pelletier, Cathy A

2014-02-01

335

The effect of additives on the co-crystallisation of calcium with barium sulphate  

Microsoft Academic Search

A study has been carried out to ascertain the effect of divalent cations and scale inhibitors on the lattice parameters, crystal size and morphology of barium sulphate. The mineral barite can support up to 6% calcium substitution for barium ions in the crystal lattice. Grahmann (Neues Jahrb. Min. 1 (1920) 1). It is known that the presence of magnesium and

A. J. B. Hennessy; G. M. Graham

2002-01-01

336

Synthesis, characterization and microwave absorption properties of titania-coated barium ferrite composites  

NASA Astrophysics Data System (ADS)

Anatase titania-coated barium ferrite composites were prepared by a heterogeneous precipitation method in the presence of barium ferrite particles. The obtained samples were characterized by ?-pH, TEM, EDX and XRD. The complex permittivity and permeability were studied in the frequency range of 2 12 GHz. The structure and microwave response properties are investigated. The results show that the coverage of titania has a great influence on microwave response of barium ferrite. The formation of an anatase titania nano-layer on the surface of a barium ferrite particle changes the character of the frequency dispersion of the complex permittivity. Comparing the anatase titania-coated barium ferrite composites with the uncoated barium ferrite, the complex permittivity of the anatase titania-coated barium ferrite composites is higher than that of uncoated barium ferrite. The complex permeability of composites was found to decrease with an increase in frequency as well as with the molar ratio of Ti:Ba. The enhancement of the complex permittivity may be due to dipolar polarization and interfacial polarization. The maximum reflection loss was obtained at the Ti:Ba ratio of 1:10, and the peak of the maximum reflection loss shifts to a lower frequency value with increasing titania fraction. By changing the thickness of titania coverage, the frequency dependence of the complex permittivity could be adjusted, which provides us an opportunity for the synthesis of tailored particles.

Tang, X.; Zhao, B. Y.; Tian, Q.; Hu, K. A.

2006-12-01

337

Lack of effect of drinking water barium on cardiovascular risk factors  

SciTech Connect

Higher cardiovascular mortality has been associated in a single epidemiological study with higher levels of barium in drinking water. The purpose of this study was to determine whether drinking water barium at levels found in some U.S. communities-alters the known risk factors for cardiovascular disease. Eleven healthy men completed a 10-week dose-response protocol in which diet was controlled. Other aspects of the subjects' lifestyles known to affect cardiac risk factors were controlled, and the barium content (as barium chloride) of the drinking water was varied from 0, to 5 ppm, to 10 ppm. Multiple blood and urine samples, morning and evening blood pressure measurements, and 48-hr electrocardiographic monitoring were performed at each dose of barium. There were no changes in morning or evening systolic or diastolic blood pressures, plasma cholesterol or lipoprotein or apolipoprotein levels, serum potassium or glucose levels, or urine catecholamine levels. There were no arrythmias related to barium exposure detected on continuous electrocardiographic monitoring. A trend was seen toward increased total serum calcium levels with exposure to barium, which was of borderline statistical significance and of doubtful clinical significance. In summary, drinking water barium at levels of 5 and 10 ppm did not appear to affect any of the known modifiable cardiovascular risk factors.

Wones, R.G.; Stadler, B.L.; Frohman, L.A. (Univ. of Cincinnati College of Medicine, OH (USA))

1990-04-01

338

Study of Second Harmonic Generation Coefficients and Ultraviolet Absorption Edge of Barium Borate Crystal.  

National Technical Information Service (NTIS)

Barium borate (beta-BaB2O4) is a new type of non-linear optical crystal. In this paper the authors report one-electron energies and wave functions of barium borate by use of EHMO theory. Both the calculated values of SHG coefficient and ultraviolet absorp...

J. K. Zhu B. Zhang S. H. Liu

1985-01-01

339

Growth and characterization of a new non-linear optical barium strontium borate (BSB) single crystal  

Microsoft Academic Search

The growth of a new inorganic mixed borate of barium strontium borate (BSB) is reported by solution growth technique for the first time. The structure of the grown crystal has been identified by single crystal X-ray diffraction method. The exact percentage of barium and strontium present in the mixed borate crystal system is quantified by atomic absorption spectroscopic analysis. The

K. Prabha; T. Rajesh Kumar; Shi Feng Du; M. Vimalan; A. Dayalan; P. Sagayaraj

2010-01-01

340

Synthesis and properties of barium titanate solid solution thin films deposited on copper substrates  

Microsoft Academic Search

Barium titanate thin films were deposited via chemical solution deposition using a hybrid-chelate chemistry directly on copper foil substrates. A process was developed to crystallize and densify the ferroelectric films at 900°C by using a reductive atmosphere containing nitrogen, hydrogen, water vapor, and oxygen impurities such that film constituents were oxidized to form barium titanate and the foil substrate remained

Jon Fredrick Ihlefeld

2006-01-01

341

Photoemission study of the reactivity of barium towards SiO x thermal films  

Microsoft Academic Search

Barium was deposited at room temperature on a thermal silicon oxide layer and the interfacial reaction was monitored by synchrotron induced photoemission (both core level and valence band). The first step of the growth consists of an interfacial reaction which leads to the formation of an interfacial silicate layer. The next step consists in formation of barium oxide while metallic

T. Genevès; B. Domenichini; L. Imhoff; V. Potin; Z. Li; S. Bourgeois

2011-01-01

342

SHORT TERM TOXICITY (1 AND 10 DAY GAVAGE) OF BARIUM CHLORIDE IN MALE AND FEMALE RATS  

EPA Science Inventory

To assess adverse effects that might be caused by an event resulting in high levels of barium in drinking water, rats were gavaged with barium chloride (BaCl2 at dosage levels of 30,100, and 300 rng/kg in a 1-day study and at 100,145,209, and 300 rng/kg for 10 days, and the effec...

343

Evidence against Barium in the Mushroom Trogia venenata as a Cause of Sudden Unexpected Deaths in Yunnan, China  

PubMed Central

This study examined barium concentrations in the mushroom Trogia venenata, the leading culprit for sudden unexpected deaths in Yunnan, southwest China. We found that barium concentrations in T. venenata from Yunnan were low and comparable to other foods, inconsistent with barium concentrations in this mushroom as a significant contributor to these deaths.

Zhang, Ying; Li, Yanchun; Wu, Gang; Feng, Bang; Yoell, Shanze; Yu, Zefen; Zhang, Keqin

2012-01-01

344

Environmental monitoring of offshore oil and gas drilling discharges—A caution on the use of barium as a tracer  

Microsoft Academic Search

Commonly used methods for extracting barium from marine sediments are inefficient when high concentrations of barium sulphate are present in samples. Comparative data on sea-bed barium concentrations around a single exploration well are presented to highlight the influence of different extraction methods which can result in 2–3 order of magnitude differences in levels recorded. This suggests that in many monitoring

John P. Hartley

1996-01-01

345

Review of Comprehensive Outpatient Rehabilitation Facility Therapy Services Provided by Care Alliance of America, Inc.  

National Technical Information Service (NTIS)

Comprehensive outpatient rehabilitation facilities (CORF) provide outpatient diagnostic, therapeutic, and restorative services for the rehabilitation of injured, disabled, or sick persons. Sections 4523(d) and 4541 of the Balanced Budget Act of 1997 amend...

2009-01-01

346

Medicare Outpatient Therapy: Implementation of the 2012 Manual Medical Review Process.  

National Technical Information Service (NTIS)

In 2011, Medicare paid about $5.7 billion to provide outpatient therapy services for 48 million beneficiaries. Rising Medicare spending for outpatient therapy services--physical therapy, occupational therapy, and speech-language pathology--has long been o...

2013-01-01

347

42 CFR 413.122 - Payment for hospital outpatient radiology services and other diagnostic procedures.  

Code of Federal Regulations, 2012 CFR

...false Payment for hospital outpatient radiology services and other diagnostic procedures...122 Payment for hospital outpatient radiology services and other diagnostic procedures...for determining Medicare payments for radiology services and other diagnostic...

2012-10-01

348

42 CFR 413.122 - Payment for hospital outpatient radiology services and other diagnostic procedures.  

Code of Federal Regulations, 2011 CFR

...false Payment for hospital outpatient radiology services and other diagnostic procedures...122 Payment for hospital outpatient radiology services and other diagnostic procedures...for determining Medicare payments for radiology services and other diagnostic...

2011-10-01

349

42 CFR 410.141 - Outpatient diabetes self-management training.  

Code of Federal Regulations, 2010 CFR

...2009-10-01 2009-10-01 false Outpatient diabetes self-management training. 410.141 ...MEDICAL INSURANCE (SMI) BENEFITS Outpatient Diabetes Self-Management Training and Diabetes Outcome Measurements § 410.141...

2009-10-01

350

42 CFR 410.141 - Outpatient diabetes self-management training.  

Code of Federal Regulations, 2013 CFR

...2013-10-01 2013-10-01 false Outpatient diabetes self-management training. 410.141 ...MEDICAL INSURANCE (SMI) BENEFITS Outpatient Diabetes Self-Management Training and Diabetes Outcome Measurements § 410.141...

2013-10-01

351

42 CFR 410.141 - Outpatient diabetes self-management training.  

Code of Federal Regulations, 2010 CFR

...2010-10-01 2010-10-01 false Outpatient diabetes self-management training. 410.141 ...MEDICAL INSURANCE (SMI) BENEFITS Outpatient Diabetes Self-Management Training and Diabetes Outcome Measurements § 410.141...

2010-10-01

352

42 CFR 410.141 - Outpatient diabetes self-management training.  

Code of Federal Regulations, 2010 CFR

...2004-10-01 2004-10-01 false Outpatient diabetes self-management training. 410.141 ...MEDICAL INSURANCE (SMI) BENEFITS Outpatient Diabetes Self-Management Training and Diabetes Outcome Measurements § 410.141...

2004-10-01

353

42 CFR 410.141 - Outpatient diabetes self-management training.  

Code of Federal Regulations, 2010 CFR

...2005-10-01 2005-10-01 false Outpatient diabetes self-management training. 410.141 ...MEDICAL INSURANCE (SMI) BENEFITS Outpatient Diabetes Self-Management Training and Diabetes Outcome Measurements § 410.141...

2005-10-01

354

42 CFR 410.141 - Outpatient diabetes self-management training.  

Code of Federal Regulations, 2010 CFR

...2003-10-01 2003-10-01 false Outpatient diabetes self-management training. 410.141 ...MEDICAL INSURANCE (SMI) BENEFITS Outpatient Diabetes Self-Management Training and Diabetes Outcome Measurements § 410.141...

2003-10-01

355

42 CFR 413.124 - Reduction to hospital outpatient operating costs.  

Code of Federal Regulations, 2013 CFR

...center approved surgical procedures performed in the hospital outpatient setting under § 413.118 and hospital outpatient radiology services and other diagnostic procedures under § 413.122, the reduction is applicable only to the hospital-specific...

2013-10-01

356

42 CFR 413.122 - Payment for hospital outpatient radiology services and other diagnostic procedures.  

Code of Federal Regulations, 2010 CFR

...false Payment for hospital outpatient radiology services and other diagnostic procedures...122 Payment for hospital outpatient radiology services and other diagnostic procedures...for determining Medicare payments for radiology services and other diagnostic...

2010-10-01

357

42 CFR 413.122 - Payment for hospital outpatient radiology services and other diagnostic procedures.  

Code of Federal Regulations, 2013 CFR

...false Payment for hospital outpatient radiology services and other diagnostic procedures...122 Payment for hospital outpatient radiology services and other diagnostic procedures...for determining Medicare payments for radiology services and other diagnostic...

2013-10-01

358

42 CFR 413.122 - Payment for hospital outpatient radiology services and other diagnostic procedures.  

Code of Federal Regulations, 2010 CFR

...false Payment for hospital outpatient radiology services and other diagnostic procedures...122 Payment for hospital outpatient radiology services and other diagnostic procedures...for determining Medicare payments for radiology services and other diagnostic...

2009-10-01

359

Swallowing in neurological outpatients: Use of a timed test  

Microsoft Academic Search

Swallowing was studied prospectively in a consecutive group of 90 neurology outpatients under 70 years of age. No patient had been referred primarily because of dysphagia. Patients were classified into four groups: those with (1) neurological or (2) non-neurological diagnoses possibly relevant to disordered swallowing, (3) functional disorders, and (4) definite diagnoses not likely to be relevant. They were defined

Kalyanee M. Nathadwarawala; Anna McGroary; Charles M. Wiles

1994-01-01

360

Medicare: Payments for Covered Outpatient Drugs Exceed Providers' Cost.  

National Technical Information Service (NTIS)

While Medicare does not have a comprehensive outpatient drug benefit, certain drugs and biologicals are covered under part B of the program. In general, drugs are covered if they cannot be self-administered and are related to a physicians services, such a...

2001-01-01

361

Integrative Outpatient Group Therapy for Discharged Elderly Psychiatric Inpatients.  

ERIC Educational Resources Information Center

Examined effectiveness of outpatient group therapy for discharged elderly psychiatric inpatients. Found that therapy was enhanced by participation of caregivers or significant others, in-depth exploration of medical issues and medication, and the creation of a socially active facilitating environment with extensions into the community. (Author/NB)

Schmid, A. H.; Rouslin, M.

1992-01-01

362

Hysteroscopic sterilisation in the outpatient department without anaesthesia  

Microsoft Academic Search

Background: Compared to laparoscopic sterilisation, the hysteroscopic approach obviates admission, general anaesthesia, surgical incisions and a complication rate of 5 per 1,000 procedures. The use of the new hysteroscopic sterilisation device Essure (Conceptus) for the first consecutive 175 patients, without the use of local or intravenous anaesthesia or any sedation, has been evaluated in the outpatient department (OPD). Results: Successful

MPH Vleugels; S. Veersema

2005-01-01

363

Child Outpatient Discharges, 1975-1976: Description of the Sample.  

ERIC Educational Resources Information Center

A summary of child outpatient discharges from a mental health center over a 1-year period is given in terms of four classes of variables: client (age, diagnosis, impairment level), treatment time (length of stay, number of sessions, density of treatment), process (principal therapist by discipline, broken or cancelled scheduled appointments), and…

Siegel, Jerome M.

364

Aetiology of Intellectual Disability in Paediatric Outpatients in Northern India  

ERIC Educational Resources Information Center

Aim: To study the aetiology of intellectual disability in patients presenting to hospital and the diagnostic yield of a standardized examination. Method: Over a 1-year period, the first three children presenting to the paediatric outpatients department (OPD) on 2 selected weekdays with developmental delay, suspected intellectual disability, or…

Jauhari, Prashant; Boggula, Raju; Bhave, Anupama; Bhargava, Roli; Singh, Chandrakanta; Kohli, Neera; Yadav, Rajesh; Kumar, Rashmi

2011-01-01

365

Toward Instituting a Chaperone Policy in Outpatient Pediatric Clinics  

ERIC Educational Resources Information Center

Objectives: We sought to evaluate child, parent and medical provider preferences for chaperones for outpatient encounters and to evaluate the acceptability and frequency of utilization following institution of a chaperone policy. Secondarily, we sought to understand what medical history and examinations teens consider "sensitive." Design: We…

Feldman, Kenneth W.; Jenkins, Carol; Laney, Tyler; Seidel, Kristy

2009-01-01

366

Managing an outpatient parenteral antibiotic therapy team: challenges and solutions  

PubMed Central

Outpatient parenteral antimicrobial therapy (OPAT) programs should strive to deliver safe, cost effective, and high quality care. One of the keys to developing and sustaining a high quality OPAT program is to understand the common challenges or barriers to OPAT delivery. We review the most common challenges to starting and managing an OPAT program and give practical advice on addressing these issues.

Halilovic, Jenana; Christensen, Cinda L; Nguyen, Hien H

2014-01-01

367

Seating in the outpatient clinic: the elderly patient's perspective  

Microsoft Academic Search

To assess the adequacy of seating provided for elderly outpatients, 97 subjects attending Medicine for the Elderly clinics were interviewed. Most patients rated the chairs of average or better comfort and seat height was judged to be appropriate by 77 (79%) patients.However, over one half (54%) had difficulty when attempting to stand. Ten patients could not stand without assistance from

HC Hanger; MC Ball; GP Mulley

1991-01-01

368

Dieting in children referred to the paediatric outpatient clinic  

Microsoft Academic Search

Dietary interventions are sometimes necessary, even in young children; however, adhering to a diet can cause medical and psychosocial problems. Therefore, insight into frequency, reasons, and effectiveness is important. To establish the prevalence of dieting in children referred to a general paediatric outpatient clinic, parents of newly referred patients were given a structured questionnaire. Excluded were children whose parents did

Tjalling W. de Vries; Nienke Wierdsma; Jaap van Ede; Hugo S. Heijmans

2001-01-01

369

Behaviour Profile of Hungarian Adolescent Outpatients with a Dual Diagnosis  

ERIC Educational Resources Information Center

The behaviour dimensions of 244 Hungarian adolescent psychiatric outpatients with a dual diagnosis (intellectual disability and psychiatric diagnosis) were examined by means of the adapted version of the Behaviour Problem Inventory (BPI, Rojahn, Matson, Lott, Esbensen, & Smalls, 2001). Four IQ subgroups were created: borderline, mild, moderate and…

Dinya, Elek; Csorba, Janos; Suli, Agota; Grosz, Zsofia

2012-01-01

370

Outpatient Treatment of the Sexually Motivated Murderer and Potential Murderer.  

ERIC Educational Resources Information Center

Introduces the psychopathology and psychodynamics of sex murderer (and potential sex murderer) with emphasis on treatment in outpatient setting. Reviews system of classification of murder based on motivational dynamics of the act itself. Presents three cases that demonstrate a treatment failure, successful treatment of a catathymic sex murderer,…

Schlesinger, Louis B.; Revitch, Eugene

1990-01-01

371

Perceived Mental Illness Stigma among Youth in Psychiatric Outpatient Treatment  

ERIC Educational Resources Information Center

This research explores the experiences of mental illness stigma in 24 youth (58.3% male, 13-24 years, 75% Latino) in psychiatric outpatient treatment. Using Link and Phelan's (2001) model of stigmatization, we conducted thematic analysis of the interview texts, examining experiences of stigma at individual and structural levels, in addition to the…

Elkington, Katherine S.; Hackler, Dusty; McKinnon, Karen; Borges, Cristiane; Wright, Eric R.; Wainberg, Milton L.

2012-01-01

372

Nutrition Intervention for Patients with Gynecological Cancer Receiving Outpatient Chemotherapy  

Microsoft Academic Search

The growing trend toward outpatient chemotherapy coupled with the Registered Dietitians’ (RD) time constraints in this arena led to the development of a medical nutrition therapy (MNT) protocol. A screening tool, adapted from the Patient Generated Subjective Global Assessment (PG-SGA) and a nutrition progress tracking tool were developed and implemented.The protocol utilizes the nursing staff as a way to achieve

J. McCulley

1998-01-01

373

Resident Physicians' Perspectives on Effective Outpatient Teaching: A Qualitative Study  

ERIC Educational Resources Information Center

Learning theories, which suggest that experienced faculty use collaborative teaching styles, are reflected in qualitative studies of learners in hospital settings. However, little research has used resident focus groups to explore characteristics of successful teachers in outpatient clinics. Therefore, focus group discussions with first through…

Kisiel, John B.; Bundrick, John B.; Beckman, Thomas J.

2010-01-01

374

Requirements of time management tools for outpatient physiotherapy practice  

Microsoft Academic Search

The effects of electronic appointment booking systems on the time management activities of health professionals have received little attention to date. We report on time management practices in three outpatient physiotherapy departments with different paper and electronic systems. The study has identified a set of time management activities and associated social behaviours common to physiotherapy departments. The convenience, flexibility and

Leanne Fleet; Ann E. Blandford

2005-01-01

375

42 CFR 410.59 - Outpatient occupational therapy services: Conditions.  

Code of Federal Regulations, 2010 CFR

...certain inpatients of a hospital or a CAH or SNF. Medicare Part B pays for outpatient...to an inpatient of a hospital, CAH, or SNF who requires them but who has exhausted...institution that is a hospital, an CAH, or a SNF. (iv) Treat individuals who are...

2010-10-01

376

42 CFR 410.59 - Outpatient occupational therapy services: Conditions.  

Code of Federal Regulations, 2011 CFR

...certain inpatients of a hospital or a CAH or SNF. Medicare Part B pays for outpatient...to an inpatient of a hospital, CAH, or SNF who requires them but who has exhausted...institution that is a hospital, an CAH, or a SNF. (iv) Treat individuals who are...

2011-10-01

377

42 CFR 410.59 - Outpatient occupational therapy services: Conditions.  

Code of Federal Regulations, 2012 CFR

...certain inpatients of a hospital or a CAH or SNF. Medicare Part B pays for outpatient...to an inpatient of a hospital, CAH, or SNF who requires them but who has exhausted...institution that is a hospital, an CAH, or a SNF. (iv) Treat individuals who are...

2012-10-01

378

Penile orthoplasty using dermal grafts in the outpatient setting  

Microsoft Academic Search

Objectives. To review and evaluate our extensive outpatient experience in the use of dermal grafts for the correction of significant residual chordee in patients requiring penile orthoplasty.Methods. The medical records of all patients requiring surgical correction for severe penile curvature over the past 5 years were reviewed. Among these, 51 patients were identified in whom dermal grafts were used to

John C. Pope; Bradley P. Kropp; Kevin P. McLaughlin; Mark C. Adams; Richard C. Rink; Michael A. Keating; John W. Brock

1996-01-01

379

Selecting Unique Claims in the Outpatient File - SEER-Medicare  

Cancer.gov

For Outpatient claims, sort by patient_id, from_dt, link_num, and seg_num. Keep the first record in the sort (if first link_num;) in order to eliminate duplicate charge and payment amounts from the file.

380

How many GP referrals to dermatology outpatients are really necessary?  

PubMed Central

In a survey of patients referred to the dermatology outpatients department of a British teaching hospital, 26% of referrals were considered unnecessary by a senior house officer with three months practical dermatological experience. We conclude that better undergraduate and postgraduate education in dermatology is essential. A period spent in dermatology should be included in all vocational training schemes for general practice.

Sladden, M J; Graham-Brown, R A

1989-01-01

381

Predictors of attrition from an outpatient chemical dependency program  

Microsoft Academic Search

This study investigated differences between completers and noncompleters of an intensive outpatient substance abuse treatment program to identify key predictors of attrition. Participants (n= 138) completed a comprehensive intake\\/assessment package that included the Addiction Severity Index as a precursor to participation in the program. Discriminant function analyses (DFA) suggested that ASI composite scores and severity ratings were not useful predictors.

Joseph M. White; Krista I. Winn; Wayne Young

1998-01-01

382

Predictors of Attrition from an Outpatient Chemical Dependency Program  

Microsoft Academic Search

This study investigated differences between completers and noncompleters of an intensive outpatient substance abuse treatment program to identify key predictors of attrition. Participants (n = 138) completed a comprehensive intake\\/assessment package that included the Addiction Severity Index as a precursor to participation in the program. Discriminant function analyses (DFA) suggested that ASI composite scores and severity ratings were not useful

Joseph M. White; Krista I. Winn; Wayne Young

1998-01-01

383

Nonattenders and Attrition from a Forensic Psychology Outpatient Service  

Microsoft Academic Search

The authors examined 219 referrals to a forensic psychology outpatient service between 1989 and 1996. Factors including age of client, whether it was first or subsequent referral, number of agencies previously involved, and type of problem were examined to determine their relationship to the outcomes of nonattendance, early dropout, or completion of assessment\\/therapy. Type of problem for which the referral

Rita Dalton; Sarah Major; Maire Sharkey

1998-01-01

384

Referrals for anger and aggression in forensic psychology outpatient services  

Microsoft Academic Search

The purpose of this study was to investigate a clinical observation in referrals to a forensic clinical psychology outpatient service: that anger was related to obsessional-compulsive behaviours, possibly as a substitute means of controlling situations. A secondary hypothesis was that control of situations by obsessional-compulsive behaviours would result in greater levels of anxiety and depression, since this is not this

Mary McMurran; Vincent Egan; Cathryn Richardson; Shahla Ahmadi; Gillian Cooper

2000-01-01

385

Screening for Severe Obstructive Sleep Apnea Syndrome in Hypertensive Outpatients  

PubMed Central

We attempted to validate a two-stage strategy to screen for severe obstructive sleep apnea syndrome (s-OSAS) among hypertensive outpatients, with polysomnography (PSG) as the gold standard. Using a prospective design, we recruited outpatients with hypertension from medical outpatient clinics. Interventions included: 1) assessment of clinical data; 2) home sleep testing (HST); and 3) 12-channnel, in-laboratory PSG. We developed models using clinical or HST data alone (single-stage models) or clinical data in tandem with HST (two-stage models) to predict s-OSAS. For each model, we computed area-under-receiver-operating-characteristic curves (AUC), sensitivity, specificity, negative likelihood ratio, and negative post-test probability (NPTP). Models were then rank-ordered based upon AUC values and NPTP. HST used alone had limited accuracy (AUC=0.727, ,NPTP = 2.9%). However, models that used clinical data in tandem with HST were more accurate in identifying s-OSAS, with lower NPTP: 1) facial morphometrics (AUC=0.816, NPTP=0.6%); 2) neck circumference (AUC=0.803, NPTP=1.7%); and Multivariable Apnea Prediction Score (AUC = 0.799, NPTP =1.5%) where sensitivity, specificity and NPTP were evaluated at optimal thresholds. Therefore, HST combined with clinical data can be useful in identifying s-OSAS in hypertensive outpatients, without incurring greater cost and patient burden associated with in-laboratory PSG. These models were less useful in identifying OSAS of any severity.

Gurubhagavatula, Indira; Fields, Barry G.; Morales, Christian R; Hurley, Sharon; Pien, Grace W; Wick, Lindsay C.; Staley, Bethany A.; Townsend, Raymond R; Maislin, Greg

2013-01-01

386

Promoting Behavior Change Using Operant Techniques in an Outpatient Clinic.  

ERIC Educational Resources Information Center

The process of promoting behavior change in children described as being immature or antisocial with conduct or behavioral disorders can be enhanced by training their parents in operant techniques in an outpatient clinic setting. Most parents can respond to training because a theoretical understanding of operant techniques is not a prerequisite for…

Rae, William A.

387

Increasing Nutrition Care Services to Out-Patients  

Microsoft Academic Search

As a part of a larger ongoing state dietetic association Physician's Initiative Project, all registered dietitians in North Dakota (N=269) were surveyed via the mail to identify those who provide outpatient nutrition care services (n=67). A 90% response rate was seen. Dietitians were asked about adequacy of background information from physicians upon referral, and perceptions about the extent physicians rely

J Goodwin; L Dickson; P Stein

1998-01-01

388

Survey of satisfaction with care in a rheumatology outpatient clinic  

Microsoft Academic Search

Consumer satisfaction is increasingly recognised by hospital administrators and health care providers as an important aspect of health care. A study was undertaken to investigate the satisfaction with care among patients with rheumatoid arthritis (RA) attending a rheumatology outpatient clinic at Leeds General Infirmary. The Leeds satisfaction questionnaire was developed and rigorously tested for reliability (Cronbachs alpha) and stability (test\\/retest).

J Hill; H A Bird; R Hopkins; C Lawton; V Wright

1992-01-01

389

Outpatient protocol for biofeedback therapy of pelvic floor outlet obstruction  

Microsoft Academic Search

Pelvic floor outlet obstruction is a rare cause of severe constipation. Anal myectomy, subtotal colectomy, and medical therapy have limited success. The purpose of this study was to develop a short outpatient treatment using biofeedback techniques. Nine patients with severe constipation and straining resulting from pelvic floor outlet obstruction underwent complete investigation of the pelvic floor musculature and anal sphincter

James W. Fleshman; Zeev Dreznik; Kathleen Meyer; Robert D. Fry; Robert Carney; Ira J. Kodner

1992-01-01

390

A Model for Sober Housing during Outpatient Treatment  

PubMed Central

Finding a living environment that supports recovery is a major challenge for many clients attending outpatient treatment. Yet it is important because family, friends, and roommates who encourage substance use or discourage recovery can undermine the progress made in treatment. Destructive living environments are most problematic for clients who have limited incomes and reside in urban areas where housing markets are tight. Individuals who are homeless face constant threats to their sobriety and often lack the stability necessary to attend treatment consistently. Options Recovery Services is an outpatient program in Berkeley, California that uses sober living houses (SLHs) to provide an alcohol and drug free living environment to clients while they attend the outpatient program. This paper describes the structure and processes of the houses along with six month outcome data on 46 residents. Improvements included the number of months using substances, maximum number of days of substance use per month, arrests, and employment. Seventy six percent of the residents remained in the house at least 5 months and 39% reported being employed at some point during the past 30 days. Outpatient programs should consider establishing SLHs for clients who lack a living environment supportive of sobriety.

Polcin, Douglas L.

2008-01-01

391

Recognition of Depressive and Anxiety Disorders in Dermatological Outpatients  

Microsoft Academic Search

Although mental disorders are frequent among dermato- logical patients, little is known about their recognition by dermatologists. This study aimed to assess dermato- logists' ability to recognize depressive and anxiety disorders. All adult outpatients who visited four dermatologists on predetermined days (n~317) com- pleted the 12-item General Health Questionnaire (GHQ- 12) and the section on depressive and anxiety disorders of

Angelo Picardi; Paolo Amerio; Giannandrea Baliva; Claudio Barbieri; Patrizia Teofoli; Simone Bolli; Valentina Salvatori; Eva Mazzotti; Paolo Pasquini; Damiano Abeni

2004-01-01

392

Locus of Control and Depression in Students and Psychiatric Outpatients.  

ERIC Educational Resources Information Center

Examined the relationship among depression, locus of control of reinforcement, and age in psychiatric outpatients and students. Found depression and locus of control highly correlated; age negatively correlated with locus of control and positively with depression. Discusses the possible causal relationship between external locus of control and…

Costello, Elizabeth J.

1982-01-01

393

Dysfunctional Attitudes and Suicidal Ideation in Psychiatric Outpatients.  

ERIC Educational Resources Information Center

Administered Dysfunctional Attitude Scale (DAS), Beck Depression Inventory (BDI), Hopelessness Scale (BHS), Self-Concept Test (BST), and Scale for Suicide Ideation (SSI) to 908 psychiatric outpatients. Found that none of DAS subscales discriminated ideators and nonideators or was significantly related to SSI total scores of suicide ideators after…

Beck, Aaron T.; And Others

1993-01-01

394

Identifying Outpatients with Entrenched Suicidal Ideation Following Hospitalization  

ERIC Educational Resources Information Center

The purpose of this study was to identify outpatients who experience entrenched suicidal ideation following inpatient psychiatric hospitalization. Our findings suggest that the use of a suicidal ambivalence index score was helpful at discriminating those who reported significantly greater ratings of suicidal ideation across a 1-year period of…

O'Connor, Stephen S.; Jobes, David A.; Comtois, Katherine Anne; Atkins, David C.; Janis, Karin; Chessen, Chloe E.; Landes, Sara J.

2012-01-01

395

Self-Esteem and Suicide Ideation in Psychiatric Outpatients  

ERIC Educational Resources Information Center

Depression, hopelessness, and low self-esteem are implicated as vulnerability factors for suicide ideation. The association of self-esteem with suicide ideation after controlling for depressed mood and hopelessness was examined. Adult psychiatric outpatients (N = 338) completed measures of self-esteem, suicide ideation, hopelessness, and…

Bhar, Sunil; Ghahramanlou-Holloway, Marjan; Brown, Gregory; Beck, Aaron T.

2008-01-01

396

ADHD Prevalence in Adult Outpatients with Nonpsychotic Psychiatric Illnesses  

ERIC Educational Resources Information Center

Objective: The prevalence of ADHD in the general adult population has been estimated to be about 4.4%. However, few studies exist in which the prevalence of ADHD in psychiatric adult outpatient samples has been estimated. These studies suggest that the prevalence is higher than in the general population. The objective of this study is to estimate…

Almeida Montes, Luis Guillermo; Hernandez Garcia, Ana Olivia; Ricardo-Garcell, Josefina

2007-01-01

397

Patient Satisfaction in Public Outpatient Health Care Services  

Microsoft Academic Search

This paper is part of earlier research work conducted in the health care services sector. The customer relationship management concept has encouraged the adoption of a marketing culture not only in the private sector, but in public health care sector as well. In this paper the authors have analysed the factors affecting patient satisfaction in public health care outpatient services.

Hardip Chahal; R. D. Sharma; Mahesh Gupta

2004-01-01

398

Prospective analysis of complications 30 days after outpatient colonoscopy  

Microsoft Academic Search

Background: Our objective was to (1) determine whether more complications are reported by patients 30 days after outpatient colonoscopy than are discussed at our monthly morbidity and mortality conferences, (2) identify complications resulting in visits to the emergency department or physician's office or leading to hospitalization, and (3) assess which factors put patients at highest risk. A secondary goal was

Richard Zubarik; David E. Fleischer; Chris Mastropietro; Jennifer Lopez; John Carroll; Stanley Benjamin; Glenn Eisen

1999-01-01

399

Temperature dependence dielectric properties of modified barium titanate-PVB composites  

NASA Astrophysics Data System (ADS)

In this work, attempts are made to prepare ceramic polymer-composite followed by characterization of dielectric properties. The Barium Titanate ceramic powders are synthesized using the hydrothermal process. Silane treatment is carried out on Barium Titanate powder to increase its compatibility with polymer, followed with preparation of ceramic-polymer composite. Polyvinyl Butyral (PVB) is used as matrix for preparation of the composites and the concentration of Barium Titanate is increased from 60 to 90 wt%. Dielectric properties such as volume resistivity, dielectric constant, dissipation factor are evaluated. Results indicate that the dielectric constant and dissipation factor vary between 52 to 120 and 0.01 to 0.07; respectively as the relative ratio of polymer and silane modified Barium Titanate is varied. Specifically, at 90 wt% of silane modified Barium Titanate, the highest dielectric constant of 123 along with dissipation factor of 0.07 is obtained.

Joshi, N. J.; Rakshit, P. B.; Grewal, G. S.; Shrinet, V.; Pratap, A.

2013-06-01

400

A soluble alkoxide of barium with a cubane structure  

SciTech Connect

There has been recent interest in alkaline earth metal alkoxides and aryloxides in an effort to make volatile precursors for the preparation of superconducting thin films using organometallic chemical vapor deposition (OMCVD). This has been especially true of barium, as it is an important metal in may of the high-temperature superconductors (YBa[sub 2]Cu[sub 3]O[sub 7], HgBa[sub 2]CuO[sub 4], HgBa[sub 2]Ca[sub 2]Cu[sub 3]O[sub 8]). A problem in the attempted synthesis of a well-defined [Ba(OR)[sub 2

Borup, B.; Samuels, J.A.; Streib, W.E.; Caulton, K.G. (Indiana Univ., Bloomington, IN (United States))

1994-03-02

401

Deterioration Mode of Barium-Containing NO x Storage Catalyst  

Microsoft Academic Search

Barium-containing NOx storage catalyst showed serious deactivation under thermal exposure at high temperatures. To elucidate the thermal deterioration of the NOx storage catalyst, four types of model catalyst, Pt\\/Al2O3, Ba\\/Al2O3, Pt–Ba\\/Al2O3, and a physical mixture of Pt\\/Al2O3 + Ba\\/Al2O3 were prepared and their physicochemical properties such as BET, NO TPD, TGA\\/DSC, XRD, and XPS were evaluated while the thermal aging

Bo-Hyuk Jang; Tae-Hun Yeon; Hyun-Sik Han; Yong-Ki Park; Jae-Eui Yie

2001-01-01

402

Bis(chlorido)(dimethyl-sulfoxide-?O)barium(II)  

PubMed Central

The title compound, [BaCl2(C2H6SO)], forms a Ba6Cl9 cluster in which the BaCl2 units are connected via dimethyl­sulfoxide (DMSO) and chloride bridges. The central Cl atom of the Ba6Cl9 cluster is located on a threefold inversion axis and is coordinated octa­hedrally to six barium cations. In the crystal, the clusters are arranged in rows, which are inter­connected by the DMSO mol­ecules, forming a three-dimensional network.

Gschwind, Fabienne; Jansen, Martin

2012-01-01

403

Strain engineered barium strontium titanate for tunable thin film resonators  

NASA Astrophysics Data System (ADS)

Piezoelectric properties of epitaxial (001) barium strontium titanate (BST) films are computed as functions of composition, misfit strain, and temperature using a non-linear thermodynamic model. Results show that through adjusting in-plane strains, a highly adaptive rhombohedral ferroelectric phase can be stabilized at room temperature with outstanding piezoelectric response exceeding those of lead based piezoceramics. Furthermore, by adjusting the composition and the in-plane misfit, an electrically tunable piezoelectric response can be obtained in the paraelectric state. These findings indicate that strain engineered BST films can be utilized in the development of electrically tunable and switchable surface and bulk acoustic wave resonators.

Khassaf, H.; Khakpash, N.; Sun, F.; Sbrockey, N. M.; Tompa, G. S.; Kalkur, T. S.; Alpay, S. P.

2014-05-01

404

Selective laser sintering of barium titanate–polymer composite films  

Microsoft Academic Search

A selective laser sintering process has been used to consolidate electro-ceramic thin films on silicon substrates. Methods\\u000a of forming pre-positioned layers of barium titanate were investigated by spin-coating the feedstock powder mixed with a commercial\\u000a polymer photo-resist. The ceramic–polymer composite was deposited directly onto a nickel film which was evaporated onto a\\u000a silicon substrate, pre-oxidised to form an electrically insulating

A. T. Clare; P. R. Chalker; S. Davies; C. J. Sutcliffe; S. Tsopanos

2008-01-01

405

Bis(chlorido)(dimethyl-sulfoxide-?O)barium(II).  

PubMed

The title compound, [BaCl(2)(C(2)H(6)SO)], forms a Ba(6)Cl(9) cluster in which the BaCl(2) units are connected via dimethyl-sulfoxide (DMSO) and chloride bridges. The central Cl atom of the Ba(6)Cl(9) cluster is located on a threefold inversion axis and is coordinated octa-hedrally to six barium cations. In the crystal, the clusters are arranged in rows, which are inter-connected by the DMSO mol-ecules, forming a three-dimensional network. PMID:23284316

Gschwind, Fabienne; Jansen, Martin

2012-11-01

406

Aspiration of barium-impregnated polyethylene spheres by a dog.  

PubMed

This case report describes an 11-year-old Belgian Malinois dog with acute onset of cough caused by aspiration of barium-impregnated polyethylene spheres (BIPS) and pneumonia following an episode of suspected gastric dilation. Although bronchoscopic retrieval of the BIPS was largely unsuccessful, the dog recovered uneventfully, with most of the BIPS being coughed out and swallowed over a 1-month period. Aspiration of BIPS should be considered a potential complication of their administration. Furthermore, endoscopic removal of aspirated BIPS is challenging and may not be indicated because of their inert nature and possible self-clearance. PMID:20529021

Greci, V; Bissett, S A; Copple, C N; Hawkins, E C

2010-05-01

407

Radium and barium in the Amazon River system  

SciTech Connect

Data for /sup 226/Ra and /sup 228/Ra in the Amazon River system show that the activity of each radium isotope is strongly correlated with barium concentrations. Two trends are apparent, one for rivers which drain shield areas and another for all other rivers. These data suggest that there has been extensive fractionation of U, Th, and Ba during weathering in the Amazon basin. The /sup 226/Ra data fit a flux model for the major ions indicating that /sup 226/Ra behaves conservatively along the main channel of the Amazon River.

Moore, W.S.; Edmond, J.M.

1984-03-20

408

Magnetic and structural investigations on barium hexaferrite ferrofluids  

NASA Astrophysics Data System (ADS)

Barium hexaferrite BaFe 12-2 xTi xCo xO 19 ferrofluids have been prepared using oleic acid as surfactant and Isopar M ® or dodecane as carrier liquid. The ferrite particles were prepared by glass crystallization. Hysteresis parameters, the initial susceptibility versus temperature and the magnetic particle size were obtained by VSM. Ferrofluids with a partly deuterated carrier liquid were investigated by small angle neutron scattering (SANS). SANS curves lead to a bimodal size distribution consisting of single magnetic particles with an organic shell and aggregated particles with an incomplete organic layer.

Müller, R.; Hiergeist, R.; Gawalek, W.; Hoell, A.; Wiedenmann, A.

2002-11-01

409

Dielectric behavior of barium modified strontium bismuth titanate ceramic  

NASA Astrophysics Data System (ADS)

Barium Modified Strontium Bismuth Titanate(SBT) ceramic with general formula Sr1-xBaxBi4Ti4O15 is prepared by solid state reaction route. The structural analysis of the ceramics was done by X-ray diffraction technique. The X-ray patterns show that all the compositions are of single phase with orthorhombic structure. The temperature dependent dielectric behavior shows that the transition temperature decreases with Ba content but the maximum dielectric constant increases. The decreases of the transition with increase in Ba2+ ion, may be due to the decrease of orthorhombicity by the incorporation of Ba2+ ion in SBT lattice.

Nayak, P.; Badapanda, T.; Anwar, S.; Panigrahi, S.

2014-04-01

410

Magnetic properties of NiZr substituted barium ferrite  

NASA Astrophysics Data System (ADS)

Single-domain fine particles of NiZr substituted barium ferrite has been synthesized by citrate gel route. The magnetization value obtained are comparable with those observed in Co-Ti substitution. This has been attributed to strong preference of Ni2+ for octahedral coordination, and no particular preference for Zr4+ ion. Phase formation at lower temperature permits easy control over the microstructure and hence, a large variation in coercivity (180-4500 Oe) has been possible as a function of x and heat treatment temperature.

Rane, Manisha V.; Bahadur, D.; Kulkarni, S. D.; Date, S. K.

1999-05-01

411

Magnetic properties of NiZr substituted barium ferrite  

NASA Astrophysics Data System (ADS)

Single-domain fine particles of NiZr substituted barium ferrite has been synthesized by citrate gel route. The magnetization value obtained are comparable with those observed in Co-Ti substitution. This has been attributed to strong preference of Ni 2+ for octahedral coordination, and no particular preference for Zr 4+ ion. Phase formation at lower temperature permits easy control over the microstructure and hence, a large variation in coercivity (180-4500 Oe) has been possible as a function of x and heat treatment temperature.

Rane, Manisha V.; Bahadur, D.; Kulkarni, S. D.; Date, S. K.

412

Nanodielectric system for cryogenic applications: Barium titanate filled polyvinyl alcohol  

SciTech Connect

In the current study the focus is on dielectric properties (as a function of frequency and temperature) of a polymeric composite system composed of polyvinyl alcohol and barium titanate nano powder. In the investigations, the temperature range is between 50-295 K, and the frequency range is between $20\\ \\hertz-1\\ \\mega\\hertz$. Polarization and conduction processes are investigated in the linear regime. Dielectric breakdown strengths of samples are also reported. The materials presented have potential to be implemented in cryogenic capacitor or field grading applications.

Tuncer, Enis [ORNL; Sauers, Isidor [ORNL; James, David Randy [ORNL; Ellis, Alvin R [ORNL; Duckworth, Robert C [ORNL

2008-01-01

413

Electric tunable behavior of sputtered lead barium zirconate thin films  

NASA Astrophysics Data System (ADS)

Lead barium zirconate (PBZ) films were grown on Pt/Ti/SiO2/Si substrates by rf-magnetron sputtering. The sputtered PBZ films possess pure perovskite phase, uniform microstructure, and excellent tunable behaviors. The tunability and loss tangent of sputtered PBZ films depend greatly on the oxygen mixing ratio (OMR). The optimal dielectric tunable behavior occurs in the PBZ films sputtered at 10% OMR. The sputtered PBZ film (10% OMR) possesses a value of figure of merit of 60, promising for frequency-agile applications. Bulk acoustic waves induced by electromechanical coupling occur at 2.72 GHz, which is useful in fabricating filters and related devices in the microwave range.

Wu, Lin-Jung; Wu, Jenn-Ming; Huang, Hsin-Erh; Bor, Hui-Yun

2007-02-01

414

[The outpatient care in the Latium region (Italy) in 2001].  

PubMed

The Region of Latium has been operating an Outpatient Care Information System (SIAS) since 1997 to monitor the supply of outpatient care in a territory with a population of over five million. The present work has the aim of describing the outpatient care in the region, in terms of number of facilities involved by category (public and private, operating in the regional public health system) and volume of procedures rendered to residents in 2001. Of the 971 outpatient facilities operating in hospitals and elsewhere--37% state managed and 67% private--distributed in a non-uniform manner throughout the region, the majority is concentrated in the city of Rome, which by itself accounts for 49% of its total amount of facilities, and in a lesser measure in the other provincial capitals (Viterbo, Rieti, Frosinone, Latina). In 2001, 71 million procedures were performed, comprising 17 million prescriptions, for an economic value of over 400 million Euros. The three specialties of greatest use were Lab Analysis, Physical Therapy and Rehabilitation, and Radiology, making up 88% of the total outpatient procedures performed within the precinct of the regional health service, in respective measures of 57%, 27%, and 4%. It is noted that the public facilities are prevalently polyspecialistic while a great number of private facilities are monospecialistic and perform procedures almost exclusively (96%) in the three specialties of greatest use. The other specialties which receive notable use are Cardiology, Eye Care, Orthopedics and Neurology. In general, the greater the number of facilities there are in either the public or private sector, the greater the level of activity in terms of procedures performed, with the exception of the area of Physical Therapy and Rehabilitation where the correlation is inversely proportioned; in fact, for this specialty the public facilities, which are represented in a much greater number throughout the region, supply only 7% of the volume of activity. PMID:15554509

Torri, C; Balducci, M; Silvestri, I; Trifelli, S; Pasquarella, A; Guasticchi, G

2004-01-01

415

Dissolution of Barium from Barite in Sewage Sludges and Cultures of Desulfovibrio desulfuricans  

PubMed Central

High concentrations of total barium, ranging from 0.42 to 1.58 mg(middot)g(sup-1) (dry weight) were found in sludges of two sewage treatment plants near Florence, Italy. Barium concentrations in the suspended matter decreased as redox potential values changed from negative to positive. An anoxic sewage sludge sample was aerated, and 30% of the total barium was removed in 24 h. To demonstrate that barium was solubilized from barite by sulfate-reducing bacteria, a strain of Desulfovibrio desulfuricans was used to study the solubilization of barium from barite under laboratory conditions. During cell growth with different concentrations of barite from 0.01 to 0.3 g(middot)liter(sup-1) (the latter is the MIC) as the only source of sulfates in the cultures, the D. desulfuricans strain accumulated barium up to 0.58 (mu)g(middot)mg(sup-1) (dry weight). Three times the quantity of barium was dissolved by bacteria than in the uninoculated medium (control). The unexpectedly low concentration of soluble barium (1.2 mg of Ba(middot)liter(sup-1)) with respect to the quantity expected (109 mg of Ba(middot)liter(sup-1)), calculated on the basis of the free H(inf2)S evolved from the dissimilatory reduction of sulfate from barite, was probably due to the formation of other barium compounds, such as witherite (BaCO(inf3)) and the transient species barium sulfide (BaS). The D. desulfuricans strain, growing on barite, formed visible aggregates. Confocal microscopy analysis showed that aggregates consisted of bacteria and barite. After 3 days of incubation, several autofluorescent crystals surrounded by a dissolution halo were observed. The crystals were identified as BaS by comparison with the commercial compound.

Baldi, F.; Pepi, M.; Burrini, D.; Kniewald, G.; Scali, D.; Lanciotti, E.

1996-01-01

416

Effects of liquid paraffin in the diet or infused via colonic enema on fecal elimination of /sup 14/C-hexachlorobenzene from body burdens in rats  

SciTech Connect

Twenty-one male rats were dosed once intraperitoneally with 32.2 mg /sup 14/C-hexachlorobenzene in corn oil (/sup 14/C-HCB activity 11.67 ..mu..Ci/rat). After 4 d, six rats were randomly selected, bled and hemi-castrated with sampling of epididymal adipose tissue to establish /sup 14/C-HCB body burdens. Thereafter, all rats were allocated randomly into three groups, each with five intact and two hemi-castrated rats. One group (controls) received only a basal diet; another received the basal diet amended with 5% light mineral oil (MO); and the third received the basal diet and 1 ml of MO once daily via enema in the upper colon. Treatments were continued throughout 27 d. Excretion of /sup 14/C-HCB and(or) metabolites into feces and urine was measured daily for each rat for 31 d after /sup 14/C-HCB dosage. Fecal excretion of /sup 14/C-HCB and(or) metabolites was increased 2.5-fold by dietary MO and 1.7-fold by MO in the colon. When adjusted to equal dosage, MO by colon was 93% as effective as MO by diet. Urinary /sup 14/C-HCB excretion was not affected by MO, except indirectly through lowered body burden. Addition of hexadecane (25 ..mu..l per 100 mg adipose tissue) into the incubation mixture enhanced (P < 0.05) distribution of /sup 14/C-HCB into the liquid fraction for rats not previously fed hexadecane, but had no effect on incubation mixtures from rats fed hexadecane. Results confirm that liquid paraffins enhance elimination of /sup 14/C-HCB from body burdens into feces and suggest that distribution into blood cells and plasma may partially explain the effect.

Robles-Porras, H.

1985-01-01

417

Are the CMS Hospital Outpatient Quality Measures Relevant for Rural Hospitals?  

ERIC Educational Resources Information Center

Context: Quality measures focused on outpatient settings are of increasing interest to policy makers, but little research has been conducted on hospital outpatient quality measures, especially in rural settings. Purpose: To evaluate the relevance of Centers for Medicare and Medicaid Services' (CMS) outpatient quality measures for rural hospitals,…

Casey, Michelle M.; Prasad, Shailendra; Klingner, Jill; Moscovice, Ira

2012-01-01

418

38 CFR 17.108 - Copayments for inpatient hospital care and outpatient medical care.  

Code of Federal Regulations, 2013 CFR

...outpatient medical care is $15 for a primary care outpatient visit and $50 for a...If a veteran has more than one primary care encounter on the same day and no...amount is the copayment for one primary care outpatient visit. If a...

2013-07-01

419

42 CFR 410.62 - Outpatient speech-language pathology services: Conditions and exclusions.  

Code of Federal Regulations, 2013 CFR

...2013-10-01 false Outpatient speech-language pathology services: Conditions and exclusions...Services § 410.62 Outpatient speech-language pathology services: Conditions and exclusions...Medicare Part B pays for outpatient speech-language pathology services only if they...

2013-10-01

420

Factors that Affect Treatment Expectations of Outpatients with Substance Use Problems  

ERIC Educational Resources Information Center

The study assessed treatment expectations (TE) of outpatients with substance use problems as well as factors that affect their TE. Participants were 200 outpatients presenting at three community based substance abuse treatment services. Results of general linear modelling analyses showed that outpatients with substance use problems have higher…

Raylu, Namrata; Kaur, Inderjit

2012-01-01

421

38 CFR 17.108 - Copayments for inpatient hospital care and outpatient medical care.  

Code of Federal Regulations, 2012 CFR

...outpatient medical care is $15 for a primary care outpatient visit and $50 for a...If a veteran has more than one primary care encounter on the same day and no...amount is the copayment for one primary care outpatient visit. If a...

2012-07-01

422

38 CFR 17.108 - Copayments for inpatient hospital care and outpatient medical care.  

Code of Federal Regulations, 2011 CFR

...outpatient medical care is $15 for a primary care outpatient visit and $50 for a...If a veteran has more than one primary care encounter on the same day and no...amount is the copayment for one primary care outpatient visit. If a...

2011-07-01

423

Proton trapping in yttrium-doped barium zirconate  

NASA Astrophysics Data System (ADS)

The environmental benefits of fuel cells have been increasingly appreciated in recent years. Among candidate electrolytes for solid-oxide fuel cells, yttrium-doped barium zirconate has garnered attention because of its high proton conductivity, particularly in the intermediate-temperature region targeted for cost-effective solid-oxide fuel cell operation, and its excellent chemical stability. However, fundamental questions surrounding the defect chemistry and macroscopic proton transport mechanism of this material remain, especially in regard to the possible role of proton trapping. Here we show, through a combined thermogravimetric and a.c. impedance study, that macroscopic proton transport in yttrium-doped barium zirconate is limited by proton-dopant association (proton trapping). Protons must overcome the association energy, 29?kJ?mol-1, as well as the general activation energy, 16?kJ?mol-1, to achieve long-range transport. Proton nuclear magnetic resonance studies show the presence of two types of proton environment above room temperature, reflecting differences in proton-dopant configurations. This insight motivates efforts to identify suitable alternative dopants with reduced association energies as a route to higher conductivities.

Yamazaki, Yoshihiro; Blanc, Frédéric; Okuyama, Yuji; Buannic, Lucienne; Lucio-Vega, Juan C.; Grey, Clare P.; Haile, Sossina M.

2013-07-01

424

Indentation size effect in barium titanate with spherical tipped nanoindenters  

NASA Astrophysics Data System (ADS)

Nanoindentation tests in an 90°-ac-domain area of an {001} orientated barium titanate single crystal were performed using four different indenters (two with cube corner and two with spherical shape) with tip radii from 61 nm to 1.9 ?m. Extensive calibrations of the tips on fused quartz and sapphire defined the penetration depth range for approximately spherical contact prior to indentation of barium titanate (BaTiO3). The measured elastic modulus is independent of the different indenters. The measurements showed plastic deformation after ``pop-in''. The calculated mean pressure remained constant for each indenter, but clearly depends upon the indenter radius. The indenter radius dependence of the hardness support the concept of ``geometrically necessary dislocations'', proposed by W. D. Nix and H. Gao [J. Mech. Phys. Sol., 46, 411 (1998)] and its extension to spherical tipped indenters [J. G. Swadener, E. P. George, G. M. Pharr, J. Mech. Phys. Solids, 50, 681 (2002)]. The results show this concept fits the data generated with indenter radii which are at least an order of magnitude lower than investigated by Swadener. Furthermore, the results agree with estimates of the statistically stored dislocation density determined for BaTiO3.

Scholz, T.; Muñoz-Saldaña, J.; Swain, M. V.; Schneider, G. A.

2006-02-01

425

Redox processes in highly yttrium-doped barium titanate  

SciTech Connect

The changes of microstructure occurring during oxidation of the reduced form of yttrium-doped barium titanate (Ba{sub 1-x}Y{sub x}{sup ?}Ti{sub 1-x}{sup 4+}Ti{sub x}{sup 3+}O{sub 3}) have been studied. Samples were sintered under reduction conditions at P{sub O{sub 2}}=10{sup -4}Pa and oxidized by annealing at high temperatures (1150 and 1350 deg. C) in air. Depending on yttrium concentration, the oxidation of the reduced form of the yttrium-doped BaTiO{sub 3} caused precipitation of the phase Ba{sub 6}Ti{sub 17}O{sub 40} or the phases Ba{sub 6}Ti{sub 17}O{sub 40} and Y{sub 2}Ti{sub 2}O{sub 7}. The precipitates had well-defined orientational relationships with the perovskite matrix. Oxidation of the reduced form of doped barium titanate results in formation of the phase Ba{sub 1-x}Y{sub x}{sup ?}Ti{sub 1-x/4}{sup 4+}(V{sub Ti}{sup -}bar ){sub x/4}O{sub 3} responsible for increase in the resistance of outer grain layers, which lie between grain boundaries and grain.

Belous, Anatolii [Department of Solid State Chemistry, V.I. Vernadskii Institute of General and Inorganic Chemistry, Ukrainian National Academy of Sciences, Institute of General and Inorganic Chemistry, 32/42, Palladin Ave, 03680 Kyiv 142 (Ukraine); V'yunov, Oleg [Department of Solid State Chemistry, V.I. Vernadskii Institute of General and Inorganic Chemistry, Ukrainian National Academy of Sciences, Institute of General and Inorganic Chemistry, 32/42, Palladin Ave, 03680 Kyiv 142 (Ukraine)]. E-mail: vyunov@ionc.kar.net; Kovalenko, Leonid [Department of Solid State Chemistry, V.I. Vernadskii Institute of General and Inorganic Chemistry, Ukrainian National Academy of Sciences, Institute of General and Inorganic Chemistry, 32/42, Palladin Ave, 03680 Kyiv 142 (Ukraine); Makovec, Darko [Jozef Stefan Institute, Ljubljana (Slovenia)

2005-05-15

426

Barium titanate core - gold shell nanoparticles for hyperthermia treatments  

PubMed Central

The development of new tools and devices to aid in treating cancer is a hot topic in biomedical research. The practice of using heat (hyperthermia) to treat cancerous lesions has a long history dating back to ancient Greece. With deeper knowledge of the factors that cause cancer and the transmissive window of cells and tissues in the near-infrared region of the electromagnetic spectrum, hyperthermia applications have been able to incorporate the use of lasers. Photothermal therapy has been introduced as a selective and noninvasive treatment for cancer, in which exogenous photothermal agents are exploited to achieve the selective destruction of cancer cells. In this manuscript, we propose applications of barium titanate core–gold shell nanoparticles for hyperthermia treatment against cancer cells. We explored the effect of increasing concentrations of these nanoshells (0–100 ?g/mL) on human neuroblastoma SH-SY5Y cells, testing the internalization and intrinsic toxicity and validating the hyperthermic functionality of the particles through near infrared (NIR) laser-induced thermoablation experiments. No significant changes were observed in cell viability up to nanoparticle concentrations of 50 ?g/mL. Experiments upon stimulation with an NIR laser revealed the ability of the nanoshells to destroy human neuroblastoma cells. On the basis of these findings, barium titanate core–gold shell nanoparticles resulted in being suitable for hyperthermia treatment, and our results represent a promising first step for subsequent investigations on their applicability in clinical practice.

FarrokhTakin, Elmira; Ciofani, Gianni; Puleo, Gian Luigi; de Vito, Giuseppe; Filippeschi, Carlo; Mazzolai, Barbara; Piazza, Vincenzo; Mattoli, Virgilio

2013-01-01

427

Results of magnetospheric barium ion cloud experiment of 1971  

NASA Technical Reports Server (NTRS)

The barium ion cloud experiment involved the release of about 2 kg of barium at an altitude of 31 482 km, a latitude of 6.926 N., and a longitude of 74.395 W. Significant erosion of plasma from the main ion core occurred during the initial phase of the ion cloud expansion. From the motion of the outermost striational filaments, the electric field components were determined to be 0.19 mV/m in the westerly direction and 0.68 mV/m in the inward direction. The differences between these components and those measured from balloons flown in the proximity of the extremity of the field line through the release point implied the existence of potential gradients along the magnetic field lines. The deceleration of the main core was greater than theoretically predicted. This was attributed to the formation of a polarization wake, resulting in an increase of the area of interaction and resistive dissipation at ionospheric levels. The actual orientation of the magnetic field line through the release point differed by about 10.5 deg from that predicted by magnetic field models that did not include the effect of ring current.

Adamson, D.; Fricke, C. L.; Long, S. A. T.

1975-01-01

428

Response of alanine and barium dithionate EPR dosimeters.  

PubMed

The response of alanine and barium dithionate EPR dosimeters to proton irradiation with energies ranging from 6.6-25 MeV has been investigated. EPR dosimeters were calibrated using calibrated gamma sources. Alanine dosimeters show a value 29% higher than those obtained by a Markus chamber at the same energy, and barium dithionate shows a value 22% smaller. The response of the EPR dosimeters to irradiation at a mean dose of about 40 Gy depends on the proton energy. Using experimental data, the yield of the radicals in the tracks for the alanine pellets was calculated. The yield of the radicals was determined to be proportional to the linear energy transfer (LET) on the straight-line length of the proton track, and the proportional coefficient for alanine is equal to 0.109 eV-1. In the area of the Bragg peak, the probability of recombination of the ionized electrons with cations is increased. As a result, approximately 4.6 MeV of proton energy is used for ionization that results in electron-cation recombination instead of formation of radicals, and maximum LET does not coincide with the maximum concentration of the radicals. PMID:20065714

Onischuk, V A; de Boer, J; Levon, A I; Maksimenko, V M; Wurkner, M; Zaitov, V R; Bugay, O A

2010-02-01

429

Crystal growth of barium rhenates from hydroxide fluxes  

NASA Astrophysics Data System (ADS)

Single crystals of two new barium rhenate compositions, Ba 16Re 6O 37 and Ba 10Re 3O 16(OH) 3, and of one new polymorph, orthorhombic Ba 5Re 2O 12, were grown out of a barium hydroxide flux in sealed silver tubes. Ba 16Re 6O 37 and Ba 10Re 3O 16(OH) 3 crystallize into the monoclinic C2/ m system, with a = 20.577(4) Å, b = 5.8897(10) Å, c = 15.438 (3) Å, ? = 92.255(10) ° and a = 1938342(9) Å, b = 5.8172(3) Å, c = 10.2925(5) Å, ? = 91.7460(10) °, respectively. The orthorhombic polymorph of Ba 5Re 2O 12 crystallizes in the space group Pnma, with a = 19.6728(10) Å, b = 5.8491(3) Å and c = 10.4648(5) Å. All the three crystal structures are related and consist of a framework of BaO x polyhedra (where x varies from six to twelve) with interpenetrating layers of ReO 6 octahedra.

Bharathy, M.; Smith, M. D.; zur Loye, H.-C.

2010-02-01

430

Core effect on the diamagnetic spectrum of barium Rydberg states  

NASA Astrophysics Data System (ADS)

We study the core effect of nonhydrogenic alkaline-earth-metal barium in its diamagnetic spectrum by one photon transition from the ground state 6s2 1S0 experimentally and theoretically. The non-Coulombic potential of the ion core introduces an extra energy shift compared with hydrogen and a level anticrossing between different n manifolds, characterized by the quantum defect of the concerned angular momentum states. With a complex rotation coordinate technique and a B-spline expansion method, we develop a matrix-form Hamiltonian based on an effective potential incorporating the angular-dependent quantum defect into the angular rotation term. The nonhydrogen core effects are investigated by sweeping the quantum defects of different channels in the calculation. Results show that quantum defects of p and f states have a undeniable effect on the intensities and positions of the spectral lines, although barium is closely hydrogenlike in the energy range examined. The anticrossing spectral lines are also identified with the aid of theoretical calculations. The calculations are in good agreement with the experimental observations.

Yang, H. F.; Gao, W.; Quan, W.; Liu, X. J.; Liu, H. P.

2012-03-01

431

The Evolving Mixture of Barium Isotopes in Milky Way Halo Stars  

NASA Astrophysics Data System (ADS)

Heavy metals in stars form through one of two types of neutron capture processes: the rapid r-process or slower s-process. The fraction of odd and even barium isotopes in stars can indicate which process predominantly contributed to a star’s heavy metals, since odd barium isotopes predominantly form through the r-process and even barium isotopes through the s-process. The “stellar model” predicts that older stars contain comparable amounts of odd and even barium isotopes, while the “classical model” states that they almost exclusively contain odd isotopes. This study investigated these competing models by analyzing high-resolution spectra of twelve Milky Way stars. These spectra were analyzed for the first time in this study. To quantify r- and s-process enrichment, we measured the odd barium isotope fraction in the stars by fitting models to the stars’ spectra. Generating models involved measuring the stars’ Doppler shift, resolution, and barium abundance. To reduce error margins we optimized resolution and barium abundance measurements by enhancing existing techniques through several rounds of revisions. Our results support the stellar model of heavy metal enrichment, and our proposed optimizations will enable future researchers to obtain a deeper understanding of chemical enrichment in the Universe. This research was supported by the Science Internship Program at the University of California Santa Cruz, Lick Observatory, and the National Science Foundation.

Choudhury, Zareen; Kirby, E. N.; Guhathakurta, P.

2014-01-01

432

Intussusception - x-ray (image)  

MedlinePLUS

... bowel has slipped into another section of bowel (intussusception), causing swelling, reduced blood flow, obstruction, and tissue damage. Intussusception requires emergency treatment (barium enema or surgery) to ...

433

Substituting inpatient for outpatient care: what is the impact on hospital costs and efficiency?  

PubMed

Substitution of inpatient for outpatient care is seen as a means to increase patient throughput and control costs. The purpose of this study was to assess the impact of increased outpatient care on hospital costs and efficiency using Finnish specialty-level data from years 2003-2006 to which we applied stochastic frontier analysis. The results reveal that outpatient services have a smaller impact on total costs than inpatient services. At the same time, increased outpatient activity appears to have an adverse effect on estimated cost efficiency. This counterintuitive finding is probably due to the low weight given to outpatient activities by the Diagnosis Related Groups (DRG) system. A common weighting for inpatient and outpatient services is required in order to assess accurately the impact of outpatient care on efficiency. PMID:20037768

Vitikainen, Kirsi; Linna, Miika; Street, Andrew

2010-08-01

434

Organizational determinants of outpatient substance abuse treatment duration in women.  

PubMed

Longer treatment duration has consistently been related to improved substance use outcomes. This study examined how tailored women's programming and organizational characteristics were related to duration in outpatient substance abuse treatment in women. Data were from two waves of a national outpatient substance abuse treatment unit survey (n = 571 in 1999/2000, n = 566 in 2005). Analyses were conducted separately for methadone and nonmethadone programs. Negative binomial regressions tested associations between organizational determinants, tailored programming, and women's treatment duration. Of the tailored programming services, childcare was significantly related to longer duration in the nonmethadone programs, but few other organizational factors were. Tailored programming was not associated to treatment duration in methadone programs, but ownership, affiliation, and accreditation were related to longer duration. Study findings suggest evidence for how external relationships related to resources, treatment constraints, and legitimacy may influence women's treatment duration. Methadone programs may be more vulnerable to external influences. PMID:19038526

Campbell, Cynthia I; Alexander, Jeffrey A; Lemak, Christy Harris

2009-07-01

435

Shortening waiting lists in orthopaedic surgery outpatient clinics.  

PubMed Central

There is a long waiting list for orthopaedic outpatient appointments in South Glamorgan Area Health Authority as elsewhere. A detailed study of that waiting list was undertaken to identify factors that might lead to its better management and reduction. One-third of patients on the list failed to attend when appointments were offered. A postal-questionnaire to all those listed as waiting confirmed that many no longer sought specialist orthopaedic consultation. Another third of the patients reported that they had been treated previously for the same orthopaedic problem. It is concluded that improved management of long outpatient waiting lists could be achieved by correspondence with referring general practitioners to weed out those patients who no longer wish to attend, to reduce the burden of reviews and re-referrals of patients with "chronic" conditions, and to request priorities fairly so that earlier appointments may be offered to truly "new" patients with treatable or with potentially serious conditions.

West, R R; McKibbin, B

1982-01-01

436

Moisture-vapour-permeable film as an outpatient burn dressing.  

PubMed

This study compares a moisture-vapour-permeable film (MVPF) with silver sulphadiazine in a randomized prospective manner for the treatment of outpatient burns. The two treatment groups were closely matched in age, sex, per cent of BSA burned, and in burn severity and locations. The MVPF group demonstrated a 39.0 per cent greater reduction in pain after application of the dressing over the silver sulphadiazine group. Patients in the MVPF film group also reported significantly less difficulty in wound care and in dressing interference with their daily functions. The clinical infection rate and time to healing were similar in both groups. In the management of outpatient burns, MVPF was found to be superior to silver sulphadiazine. PMID:3370523

Waffle, C; Simon, R R; Joslin, C

1988-02-01

437

Combined laparoscopy and minilaparotomy for outpatient reversal of tubal sterilization.  

PubMed

This retrospective study determines risks, outcomes, and cost savings in microscopic tubal sterilization reversal done by minilaparotomy. From January 1992 to December 1993, 40 women, as outpatients, had combined laparoscopy and minilaparotomy for tubal anastomosis. The mean operating time was 1.7 hours, mean blood loss was 20 mL, and mean recovery time was 3.2 hours. Thirty-seven patients (93%) were discharged on the same day, two stayed for 23 hours, and one patient required hospitalization for 2 nights. There were no immediate or postoperative complications. Early crude pregnancy rate was 60%, with an 8% ectopic rate. Tubal patency was confirmed in 39 (98%). The average total cost to the patient was $5,200. Microsurgical tubal anastomosis can be done safely and successfully on an outpatient basis, reducing costs and morbidity and accelerating the patient's return to activity. PMID:7660207

Daniell, J F; McTavish, G

1995-09-01

438

Outpatient Reversal of Sterilization with Laparoscopically Placed Titanium Staples  

PubMed

We assessed the feasibility of performing outpatient reanastomosis of the fallopian tubes using titanium staples. Twelve women underwent routine infertility evaluation followed by laparoscopic tubal anastomosis. After preparation of the fallopian tubes, cannulation was performed proximally by hysteroscope or distally with a 3F catheter stent. The mesosalpinx was approximated with titanium staples. Circumferential staples (3-4) were placed around the stented tube to approximate the tubal muscularis. Patency was documented intraoperatively by chromotubation. Mean operating time was 130 minutes (range 90-170 min). Patients were generally discharged within 6 hours of surgery. Bilateral anastomosis was performed in nine women and unilateral anastomosis in three due to inadequate tubal length. Preliminary follow-up with hysterosalpingogram at 6 months revealed 80% tubal patency, and four women are currently pregnant. We suggest that laparoscopic reversal of sterilization is a viable alternative to more traditional methods and can be performed in an outpatient setting. PMID:9074241

Stadtmauer; Sauer

1996-08-01

439

Feasibility of Outpatient Self-Administration of Parenteral Antibiotics  

PubMed Central

It is customary to treat patients with infective endocarditis or osteomyelitis for a prolonged period in hospital with parenteral antibiotics. It was felt that it might be feasible to allow parenteral administration of antibiotics by the patients themselves at home. Results in 13 patients who administered antibiotics parenterally themselves (experimental group) were compared with those in 7 patients (control group) treated entirely within the hospital. Antibiotic-related complications were similar in both groups. There was no instance of infection of the intravenous cannula in either group. The average daily cost of antibiotic therapy decreased from $243.22 for inpatients to $69.35 for outpatients. The average cost of illness was $6,357.22 in the experimental group and $10,022.23 in the control group. If patients are carefully selected and well educated, the outpatient self-administration of antibiotics parenterally is both economical and safe.

Antoniskis, Andris; Anderson, Bruce C.; Van Volkinburg, Earl J.; Jackson, Joanne M.; Gilbert, David N.

1978-01-01

440

Secondary repair of digital flexor tendons in outpatient clinic.  

PubMed

A total of 32 digits, including 3 thumbs, were reconstructed in an outpatient clinic. The patients were allowed to go home 3-4 hours after the operation. The patients had injury to the flexor tendon in no man's land without other complications except for an injury to the digital nerve in 6 cases. The tendon was reconstructed secondarily using a free graft. The minimum follow-up time was 6 months. The results were classified in three ways. With all methods the results, which were deemed satisfactory in 79% and poor in 21%, reached the average standard for this type of repair. Increasing age of the patients, injury to the pulley, preoperative adhesions, digital nerve injury, and time elapsed from injury to surgery impaired the results. This study indicates that tendon surgery of the hand with short postoperative care can also be conducted with satisfactory results in an outpatient clinic. PMID:4083778

Jaroma, H; Suomalainen, O; Sivula, U M; Turpeinen, L

1985-01-01

441

Organizational Determinants of Outpatient Substance Abuse Treatment Duration in Women  

PubMed Central

Longer treatment duration has consistently been related to improved substance use outcomes. This study examined how tailored women's programming and organizational characteristics were related to duration in outpatient substance abuse treatment in women. Data were from two waves of a national outpatient substance abuse treatment unit survey (n=571 in 1999/2000, n=566 in 2005). Analyses were conducted separately for methadone and non-methadone programs. Negative binomial regressions tested associations between organizational determinants, tailored programming, and women's treatment duration. Of the tailored programming services, childcare was significantly related to longer duration in the non-methadone programs, but few other organizational factors were. Tailored programming was not associated to treatment duration in methadone programs, but ownership, affiliation, and accreditation were related to longer duration. Study findings suggest evidence for how external relationships related to resources, treatment constraints, and legitimacy may influence women's treatment duration. Methadone programs may be more vulnerable to external influences.

Alexander, Jeffrey A.; Lemak, Christy Harris

2009-01-01

442

Outpatient commitment and its alternatives: questions yet to be answered.  

PubMed

This Open Forum reviews research findings on outpatient commitment and alternative approaches, such as conditional hospital release and guardianship. Despite the accumulating evidence in favor of these practices, many questions remain about their essential elements and comparative effectiveness. The authors describe the strengths and shortcomings in existing studies and propose a research strategy that would take advantage of advances in methodologies, such as instrumental variables and propensity weighting, to design studies with a level of rigor comparable to that of randomized controlled trials. The Affordable Care Act (ACA) introduces many opportunities and resources to improve care; studies should also be undertaken to investigate use of outpatient commitment and alternative approaches in the post-ACA health care environment. PMID:24881686

Morrissey, Joseph P; Desmarais, Sarah L; Domino, Marisa E

2014-06-01

443

Outpatient drug policy by clinical assessment rather than financial constraints?  

Microsoft Academic Search

Since 1991, the Dutch Price Reference System (DPRS) has aimed at a growth reduction of out-patient drug costs without loss of medical quality. New drugs are excluded unless they pass legally anchored clinical criteria, i.e. substitutability with accepted drugs (DPRS-list 1a, implies a reimbursement maximum), ‘unique and valuable’ (DPRS-list 1b, liberal price setting), or lack of value (rejected). We analysed

Marja H. Pronk; Gouke J. Bonsel

2004-01-01

444

Language difficulties in an Outpatient Clinic in Switzerland  

Microsoft Academic Search

Summary This small-scale study attempts to examine the languages spoken in medical consultations during a one-month period in an outpatient clinic in Geneva and the ways health professionals use to communicate with their allophone patients, in particular by using interpreters. Patients of foreign origin accounted for 58% of all the consultations during the survey. Of these, 37% were Non-French-speakers (NFS).

Alexander Bischoff; Claude Tonnerre; Louis Loutan; Hans Stalder

1999-01-01

445

Association of Air Pollution with Hospital Outpatient Visits in Beijing  

Microsoft Academic Search

Data collected at a community-based hospital in Beijing, China, were analyzed in an assessment of the association of air pollution with daily outpatient visits. Total suspended particle (TSP) measurements were available for 210 d (mean, 388 ?g\\/m; maximum, 1 255 ?g\\/m), and sulfur dioxide (SO2) measurements were available for 2 d (mean, 119 ?g\\/m; maximum, 478 ?g\\/m). The average number

Xiping Xu; Douglas W. Dockery; David C. Christiani; Baoluo Li; Huiying Huang

1995-01-01

446

Resident physicians’ perspectives on effective outpatient teaching: a qualitative study  

Microsoft Academic Search

Learning theories, which suggest that experienced faculty use collaborative teaching styles, are reflected in qualitative\\u000a studies of learners in hospital settings. However, little research has used resident focus groups to explore characteristics\\u000a of successful teachers in outpatient clinics. Therefore, focus group discussions with first through third-year internal medicine\\u000a residents at a large academic medical center were conducted to better understand

John B. Kisiel; John B. Bundrick; Thomas J. Beckman

2010-01-01

447

[Transbronchial catheterization: a method for outpatient angiographic examination].  

PubMed

The authors report on their own experiences with a not unknown, but not widely used catheter technique. On the basis of 607 transbrachial angiographies, they have established the possibilities and occasional dangers of this method. They conclude that the transbrachial technique is suitable not only for aortography, but also for selective angiography and vascular interventions. In cases involving cooperative patients, this method can furnish a basis for the angiography of outpatients. PMID:10349324

Nagy, E; Morvay, Z; Makula, E

1999-05-01

448

Synthesis and characterization of nanocrystalline Barium Strontium Titanate powder via sol-gel processing  

Microsoft Academic Search

Barium Strontium Titanate (BST) solid solution is a strong candidate material for application in tunable ferroelectric devices.\\u000a In this research, we have synthesized and characterized nanocrystalline BST (Ba0.7Sr0.3TiO3) powder with average particle-diameter of 15 nm through a simple sol-gel process, using barium acetate, strontium acetate\\u000a and titanium isopropoxide as the precursors. In this process, stoichiometric proportions of barium acetate and strontium

Vikas Somani; Samar Jyoti Kalita

2007-01-01

449

Using Barium Ions for Heavy-Atom Derivatization and Phasing of Xylanse ll from Trichoderma longibrachiatum  

SciTech Connect

This paper describes the use of barium chloride to produce a heavy-atom derivative of xylanase II crystals from Trichoderma longibrachiatum, which was obtained either by cocrystallization or soaking. SAD phasing led to interpretable electron-density maps that allowed unambiguous chain tracing. In the best case, with a data set collected at 9.5 keV, 88% of the residues were built, with 83% of the side chains assigned. The barium ions are found to mainly interact with main-chain carbonyl groups and water molecules. It is suggested that barium ions could also be used as a potential anomalous scatterer in the quick cryosoaking procedure for phasing.

Moiseeva,N.; Allaire, M.

2007-01-01

450

Why the evidence for outpatient commitment is good enough.  

PubMed

After nearly three decades of studies evaluating the legal practice of involuntary outpatient commitment, there is yet little consensus about its effectiveness and only limited implementation. Debate continues over how best to assist adults with serious mental illnesses who are unable or unwilling to participate in prescribed community treatment and as a result experience repeated involuntary hospitalizations or involvement with the criminal justice system. The authors comment on the Oxford Community Treatment Order Evaluation Trial (OCTET), a recently conducted randomized trial of outpatient commitment, and discuss the limitations of the study's design for resolving the persistent question of whether compulsory treatment is more effective than purely voluntary treatment for this difficult-to-reach target population. The authors conclude that the search for a definitive and generalizable randomized trial of outpatient commitment may be a quixotic quest; the field should, rather, welcome the results of well-conducted, large-scale, quasi-experimental and naturalistic studies with rigorous multivariable statistical controls. PMID:24881685

Swanson, Jeffrey W; Swartz, Marvin S

2014-06-01

451

Same day outpatient transjugular liver biopsies in haemophilia.  

PubMed

Patients with haemophilia are at increased risk of hepatitis C infection because of prior transfusion of blood products. Virtually all haemophiliacs who received pooled blood products before the mid-1980s have been infected with hepatitis C. A liver biopsy is important to identify the extent of liver disease, and to help determine the necessity of interferon therapy. With factor replacement, in-hospital liver biopsy is safe. Thirty patients with haemophilia were evaluated for chronic hepatitis C infection. Eleven patients subsequently underwent successful transjugular liver biopsy in the outpatient setting after appropriate factor replacement. Mean +/- SD pre- and posthaemoglobin values were 15.8 +/- 0.79 and 14.4 +/- 0.71 g dL(-1) (P = ns). There was no significant change in heart rate, systolic or diastolic blood pressure during the monitoring period (P = ns) and no major complication was noted in perioperative follow-up. The mean length of the liver biopsy specimens was 1.7 +/- 0.3 cm, mean grade was 2 +/- 0.6 and mean stage was 2.3 +/- 1.2. Our experience demonstrates that outpatient transjugular liver biopsy can be safely performed in patients with haemophilia in the outpatient setting, avoiding the cost and need for hospital admission. PMID:15569168

Saab, S; Cho, D; Quon, D V K; Ibrahim, A B; Dong, P; Marder, V; Logan, L

2004-11-01

452

Outpatient care patterns and organizational accountability in medicare.  

PubMed

IMPORTANCE Fostering accountability in the Medicare Accountable Care Organization (ACO) programs may be challenging because traditional Medicare beneficiaries have unrestricted choice of health care providers, are attributed to ACOs based on utilization, and often receive fragmented care. OBJECTIVE To measure 3 related constructs relevant to ACO incentives and their capacity to manage care: stability of patient assignment, leakage of outpatient care, and contract penetration. DESIGN, SETTING, AND PARTICIPANTS Using 2010-2011 Medicare claims and rosters of physicians in organizations participating in ACO programs, we examined these constructs among 524?246 beneficiaries hypothetically assigned to 145 ACOs prior to the start of the Medicare ACO programs. We compared estimates by patient complexity, ACO size, and the primary care orientation of ACO specialty mix. MAIN OUTCOMES AND MEASURES Three related construct measurements: stability of assignment, defined as the proportion of patients whose assignment to an ACO in 2010 was unchanged in 2011; leakage of outpatient care, defined as the proportion of office visits for an assigned population that occurred outside of the contracting organization; and contract penetration, defined as the proportion of Medicare outpatient spending billed by an ACO that was devoted to assigned patients. RESULTS Of beneficiaries assigned to an ACO in 2010, 80.4% were assigned to the same ACO in 2011. Of those assigned to an ACO in 2010 or 2011, 66.0% were consistently assigned in both years. Unstable assignment was more common among beneficiaries with fewer conditions and office visits but also among those in several high-cost categories, including the highest decile of per-beneficiary spending. Among ACO-assigned beneficiaries, 8.7% of office visits with primary care physicians were provided outside of the assigned ACO, and 66.7% of office visits with specialists were provided outside of the assigned ACO. Leakage of outpatient specialty care was greater for higher-cost beneficiaries and substantial even among specialty-oriented ACOs (54.6% for lowest quartile of primary care orientation). Of Medicare spending on outpatient care billed by ACO physicians, 37.9% was devoted to assigned beneficiaries. This proportion was higher for ACOs with greater primary care orientation (60.0% for highest quartile vs 33.6% for lowest). CONCLUSIONS AND RELEVANCE Care patterns among beneficiaries served by ACOs suggest distinct challenges in achieving organizational accountability in Medicare. Continued monitoring of these patterns may be important to determine the regulatory need for enhancing ACOs' incentives and their ability to improve care efficiency. PMID:24756690

McWilliams, J Michael; Chernew, Michael E; Dalton, Jesse B; Landon, Bruce E

2014-06-01

453

Comparing self-efficacy and self-care behaviours between outpatients with comorbid schizophrenia and type 2 diabetes and outpatients with only type 2 diabetes.  

PubMed

People with schizophrenia show higher-than-normal rates of type 2 diabetes mellitus (T2DM); however, research on their understanding of diabetes self-efficacy and self-care behaviours is lacking. This study compared differences in scores of self-efficacy and self-care behaviours between outpatients with comorbid schizophrenia and T2DM and outpatients with T2DM alone. Data were collected using the Diabetes Management Self-Efficacy Scale and Summary of Diabetes Self-Care Activity questionnaire. In total, 105 outpatients with schizophrenia and T2DM and 106 outpatients with T2DM returned completed questionnaires. Results of this study revealed that outpatients with schizophrenia and T2DM had significantly lower total self-efficacy and self-care scores than outpatients with only T2DM. The stepwise regression analysis revealed that self-efficacy, the haemoglobin A1C level and current smoking were significant predictors of self-care behaviours in outpatients with comorbid schizophrenia and T2DM, which explained 33.20% of the variance. These findings help mental health professionals improve patient care through a better understanding of self-care behaviours among outpatients with comorbid schizophrenia and T2DM. PMID:23829198

Chen, S-R; Chien, Y-P; Kang, C-M; Jeng, C; Chang, W-Y

2014-06-01

454

The outcome and long-term follow-up of 94 patients with recurrent and refractory Clostridium difficile infection using single to multiple fecal microbiota transplantation via retention enema.  

PubMed

Clostridium difficile infection (CDI) is one of the most frequent causes of healthcare-associated infections, and its rates are also increasing in the community. The management of CDI has become a major challenge, given growing rates of recurrences and failures with standard antibiotic therapy. Mounting evidence suggests that fecal microbiota transplantation (FMT) may be effective; however, as there is a paucity of data with regard to repeat FMT for primary non-response to this treatment, this study examined the outcome of multiple FMTs for recurrent CDI. Case records were reviewed for 94 patients who underwent FMT via retention enema for recurrent or refractory CDI during the period 2008-2012. Demographic information, treatment data, and clinical resolution rates were examined for single FMT and cumulative resolution was assessed for multiple FMTs in the context of ongoing symptoms. The cumulative clinical resolution following four or more FMTs was 86 %. When antibiotic therapy was used between FMTs, the clinical resolution rate increased to 92 %. There were no reported adverse events and no patients who were cured with FMT had further episodes of CDI at 6-24 months follow-up. Multiple FMTs administered through enemas is an effective, safe, and simple therapy for the management of recurrent or refractory CDI. PMID:24627239

Lee, C H; Belanger, J E; Kassam, Z; Smieja, M; Higgins, D; Broukhanski, G; Kim, P T

2014-08-01

455

Application of Gaussian Approximation Potentials to Barium Titanate  

NASA Astrophysics Data System (ADS)

The computational study of complex phenomena over long time and distance scales not accessible to first principles calculations requires empirical potentials usually derived by integrating out the electronic degree of freedoms. Recently, a parameter free approach called Gaussian Approximation Potentials (GAP) has been shown that it can duplicate first principles density functional theory (DFT) total energies and atomic forces accurately [1]. In a GAP the atomic neighborhood of an atom is projected onto the angular momentum channels of Wigner-D functions, yielding a bispectrum of the expansion coefficients of the atomic density. A non-parametric Gaussian Process regression is used to fit a database of total energies and forces to the combination of angular momentum channels constituting the bispectrum. We report initial results of using a GAP to describe the ferroelectric perovskite Barium Titanate (BaTiO3). [4pt] [1] A. P. Bartok, M. C. Payne, R. Kondor, and G. Csanyi, Phys. Rev. Lett. 104 136403 (2010).

Vielma, Jason; Schneider, Guenter

2012-02-01

456

Glycothermal synthesis and characterization of tetragonal barium titanate  

NASA Astrophysics Data System (ADS)

Tetragonal barium titanate (BaTiO3) particles were synthesized at temperature as low as 220 °C through glycothermal reaction by using Ba(OH)2•8H2O and amorphous titanium hydrous gel as precursors and 1,4-butanediol and water as solvent. XRD, DSC and Raman data support that glycothermal processing method provides a simple low-temperature route for producing tetragonal BaTiO3 nanoparticles without alkaline mineralizers. It is also demonstrated that the size and shape of BaTiO3 particles can be controlled by reaction conditions such as reaction temperature and various volume ratio of 1,4-butanediol/water. This processing method can fabricate BaTiO3 powders with narrow size distribution and low aggregation. In addition, BaTiO3 nanopowder with a Ba/Ti atomic ratio of 1.000±0.003 can be obtained in a reproducible manner with glycothermal process.

Jung, Yong-Jin; Lim, Dae-Young; Nho, Jun-Seok; Cho, Seung-Beom; Riman, Richard E.; Woo Lee, Byeong

2005-02-01

457

Barium strontium oxide coated carbon nanotubes as field emitters  

NASA Astrophysics Data System (ADS)

The authors report a field emitter structure based on oxide coated carbon nanotubes (CNTs). This emitter consists of a thin tungsten ribbon with CNTs on the surface and a thin layer of low work function barium strontium oxide coating on the CNTs. This oxide coated CNT emitter was designed to combine the benefits of the high field enhancement factor from CNTs and the low work function from the emissive oxide coating. The field emission properties of the emitters were characterized. A field enhancement factor of 467 and a work function of 1.9 eV were obtained for the oxide coated CNTs. Compared to the uncoated CNTs, the field emission from the oxide coated CNTs increased by a factor of 2-3. At 4.4 V/?m, the field emission current of 23.6 ?A was obtained from an emitting surface of 0.012 cm2.

Jin, Feng; Liu, Yan; Day, Christopher M.

2007-04-01

458

Supercritical fluid route for synthesizing crystalline Barium Strontium Titanate nanoparticles.  

PubMed

Pure and well-crystallized Barium Strontium Titanate (BST) nanoparticles with controlled Ba/Sr ratio have been successfully synthesized under supercritical conditions using a continuous-flow reactor in the temperature range of 150-380 degrees C at 26 MPa. To synthesize the Ba0.6Sr0.4TiO3 composition, alkoxides, ethanol and water were used. The resulting nanopowder consists of fine particles with an average particle size of 23 nm. The results show that the Ba/Sr ratio of this powder can be accurately controlled from the composition of precursor. The characterization of the as-synthesized Ba0.6Sr0.4TiO3 solid-solution and the dielectric properties of the sintered ceramics are here reported. PMID:16245539

Reverón, H; Elissalde, C; Aymonier, C; Bidault, O; Maglione, M; Cansell, F

2005-10-01

459

A new type of microphone using flexoelectric barium strontium titnate  

NASA Astrophysics Data System (ADS)

A flexoelectric bridge-structured microphone using bulk barium strontium titanate (Ba0.65Sr0.35TiO3 or BST) ceramic was investigated in this study. The flexoelectric microphone was installed in an anechoic box and exposed to the sound pressure emitted from a loud speaker. Charge sensitivity of the flexoelectric microphone was measured and calibrated using a reference microphone. The 1.5 mm×768 ?m×50 ?m micro-machined bridge-structured flexoelectric microphone has a sensitivity of 0.92 pC/Pa, while its resonance frequency was calculated to be 98.67 kHz. The analytical and experimental results show that the flexoelectric microphone has both high sensitivity and broad bandwidth, indicating that flexoelectric microphones are potential candidates for many applications.

Kwon, Seol ryung; Huang, Wenbin; Zhang, Shujun; Yuan, Fuh-Gwo; Jiang, Xiaoning

2014-03-01

460

Raman study of barium titanate with oxygen vacancies  

NASA Astrophysics Data System (ADS)

Barium titanate (BaTiO 3) crystal samples with different distribution of oxygen vacancies were prepared through different thermal treatment processes. The influences of oxygen vacancies on the Raman spectra and X-ray photoelectron spectroscopy (XPS) spectra of BaTiO 3 single crystals were studied comparatively. Raman measurements of fast-cooled BaTiO 3, which annealed in vacuum and then cooled in air showed many different spectroscopic results comparing with as-received BaTiO 3 sample. Raman measurements of slow-cooled BaTiO 3, which annealed in vacuum and then cooled in tube furnace exhibited few spectroscopic differences. XPS measurements of as-received BaTiO 3 sample and fast-cooled BaTiO 3 sample confirmed that this discrepancy resulted from the surface phase of oxygen vacancy in BaTiO 3.

Zhang, W. H.; Chen, L.; Tao, Y. T.; Zhang, W. H.; Chen, J.; Zhang, J. X.

2011-12-01

461

Dynamics of the CRRES barium releases in the magnetosphere  

NASA Technical Reports Server (NTRS)

The Combined Release and Radiation Effects Satellite (CRRES) G-2, G-3, and G-4 ionized and neutral barium cloud positions are triangulated from ground-based optical data. From the time history of the ionized cloud motion perpendicular to the magnetic field, the late time coupling of the ionized cloud with the collisionless ambient plasma in the magnetosphere is investigated for each of the releases. The coupling of the ionized clouds with the ambient medium is quantitatively consistent with predictions from theory in that the coupling time increases with increasing distance from the Earth. Quantitative comparison with simple theory for the couping time also yields reasonable agreement. Other effects not predicted by the theory are discussed in the context of the observations.

Fuselier, S. A.; Mende, S. B.; Geller, S. P.; Miller, M.; Hoffman, R. A.; Wygant, J. R.; Pongratz, M.; Meredith, N. P.; Anderson, R. R.

1994-01-01

462

Spectroscopic study of Er:Sm doped barium fluorotellurite glass.  

PubMed

In this paper, we report the physical and spectroscopic properties of Er(3+), Sm(3+) and Er(3+):Sm(3+) ions codoped barium fluorotellurite (BFT) glasses. Different Stokes and anti-Stokes emissions were observed under 532 nm and 976 nm laser excitations. Energy transfer from Er(3+) ion to Sm(3+) ion was confirmed on the basis of luminescence intensity variation and decay curve analysis in both the cases. Under green (532 nm) excitation emission intensity of Sm(3+) ion bands improves whereas on NIR (976 nm) excitation new emission bands of Sm(3+) ions were observed in Er:Sm codoped samples. Ion interactions and the different energy transfer parameters were also calculated. PMID:20510646

Bahadur, A; Dwivedi, Y; Rai, S B

2010-09-15

463

Calcium barium niobate ridge waveguide on silicon substrate  

NASA Astrophysics Data System (ADS)

A novel optical ridge waveguide using calcium barium niobate (CBN) with a high electro-optic coefficient on silicon substrate is proposed for the design and realization of the next-generation hybrid modulators with short length and low driving voltage. To overcome the etching difficulty of CBN, the design of a waveguide, including an elevated CBN layer based on etched silicon dioxide, is presented. Fabrication of a thick 2.5-?m CBN layer is performed using pulsed laser deposition. Deposited silicon dioxide on the sides and top of the CBN reduces the waveguide loss as low as 3.44 dB/cm, measured using a cutback method. Good agreement between the mode profiles of the simulation and measurement is obtained.

Mortazy, Ebrahim; Stateikina, Irina; Tehranchi, Amirhossein; Delprat, Sébastien; Chaker, Mohamed; Wu, Ke

2010-07-01

464

Preparation and optical properties of barium titanate thin films  

NASA Astrophysics Data System (ADS)

Barium titanate (BTO) films were prepared by sol-gel spin-coating technique. The crystal structure and optical properties of BTO films have been investigated. The results indicate that the BTO films are single perovskite phase having tetragonal symmetry. The band gap of the BTO films increases with the increasing of layer number and decreasing of solution concentration. The transmittance and band gap of the BTO films annealed at 900 °C is more than that of the BTO films annealed at 700 °C when wavelength is 200-1000 nm. When wavelength is 400-1000 nm, the absorption coefficient ? obtained by experiment is higher than that obtained by calculation (close to zero).

Cai, Wei; Fu, Chunlin; Gao, Jiacheng; Guo, Qian; Deng, Xiaoling; Zhang, Chaoyang

2011-10-01

465

BD-21 3873: another yellow-symbiotic barium star.  

NASA Astrophysics Data System (ADS)

An abundance analysis of the yellow symbiotic system BD-21 3873 reveals it to be a metal-poor K-giant ([Fe/H]=-1.3) which is enriched in the heavy s-process elements. In that respect, this star appears to be a twin of AG Dra, another yellow symbiotic system analyzed in a previous paper (Smith et al., 1996A&A...315..179S). The heavy-element abundance distributions of AG Dra and BD-21 3873 are almost identical, and are best reproduced by a s-process with a neutron exposure parameter of 1.2-1.3mb^-1^ and a neutron density logN_n_=8.3 (as derived from the Rb/Zr ratio). These two systems thus link the symbiotic stars to the binary barium and CH stars which are also s-process enriched. These binary systems, which exhibit overabundances of the heavy elements, owe their abundance peculiarities to mass transfer from thermally-pulsing asymptotic giant branch stars, which have since evolved to become white-dwarf companions of the cool stars we now view as the chemically-peculiar primaries. The spectroscopic orbits of BD-21 3873 (derived from CORAVEL measurements) and AG Dra are similar to those of barium and CH stars. With an orbital period of 281.6d, BD-21 3873 is one of the closest systems in these families, and its light curve indeed suggests that variations due to reflection and ellipticity effects are present. The amplitude of the ellipsoidal variations indicates that the giant must be close to filling its Roche lobe. However, no acceptable solution simultaneously satisfies the constraints from the light curve, the orbital elements and the evolutionary tracks in the framework of the standard Roche lobe geometry. We suggest that this discrepancy may be resolved by taking into account the deformation of the Roche lobe caused by the force driving the large mass loss of the giant.

Smith, V. V.; Cunha, K.; Jorissen, A.; Boffin, H. M. J.

1997-08-01

466

Semiclassical analysis of perturbed two-electron states in barium  

NASA Astrophysics Data System (ADS)

Recent semiclassical studies of atomic spectra allow new insight into their electron dynamics. The semiclassical closed orbit theory demonstrates the influence of classical orbits in atomic photoabsorption spectra, and has been successfully used for one-electron alkali atoms. Atomic states with one highly-excited electron are known as Rydberg states. If an atom has two valence electrons, and the electrons are treated as independent of each other, then the atom will also have states with two excited electrons. The electrons are not actually independent, so these two different configurations will interact in an atom. If some of the "singly-excited" states occur near the energy of a "doubly-excited" state, then the resulting "perturbed states" are shifted from their hydrogenic positions and have several unusual properties not accounted for by closed orbit theory. We report the first use of closed orbit theory to describe the photoabsorption of perturbed two-electron atomic states. The experimental photoabsorption for two series of perturbed states in barium were measured as a function of electric field. A new extension of semiclassical closed orbit theory was found for perturbed states, using an energy-dependent quantum defect to account for the second valence electron. Scaled energy spectroscopy measurements, a successful analysis technique for one-electron atoms, proved unhelpful when studying perturbed barium states. This demonstrated that perturbed atoms have an important electron-electron interaction term in their Hamiltonian with non-alkali scaling. Our photoabsorption calculations for hydrogen, sodium and cesium verified our experimental calibration and our analysis of atomic core effects. We also show the mathematical equivalence of closed orbit theory and quantum defect theory for modeling the photoabsorption of perturbed atomic states in a field-free environment.

Bates, Kenneth A.

467

Anomalous permittivity in fine-grain barium titanate  

NASA Astrophysics Data System (ADS)

Fine-grain barium titanate capacitors exhibit anomalously large permittivity. It is often observed that these materials will double or quadruple the room temperature permittivity of a coarse-grain counterpart. However, aside from a general consensus on this permittivity enhancement, the properties of the fine-grain material are poorly understood. This thesis examines the effect of grain size on dielectric properties of a self-consistent set of high density undoped barium titanate capacitors. This set included samples with grain sizes ranging from submicron to ˜20 microns, and with densities generally above 95% of the theoretical. A single batch of well characterized powder was milled, dry-pressed then isostatically-pressed. Compacts were fast-fired, but sintering temperature alone was used to control the grain size. With this approach, the extrinsic influences are minimized within the set of samples, but more importantly, they are normalized between samples. That is, with a single batch of powder and with identical green processing, uniform impurity concentration is expected. The fine-grain capacitors exhibited a room temperature permittivity of ˜5500 and dielectric losses of ˜2%. The Curie-temperature decreased by {˜}5sp°C from that of the coarse-grain material, and the two ferroelectric-ferroelectric phase transition temperatures increased by {˜}10sp°C. The grain size induced permittivity enhancement was only active in the tetragonal and orthorhombic phases. Strong dielectric anomalies were observed in samples with grain size as small as {˜}0.4\\ mum. It is suggested that the strong first-order character observed in the present data is related to control of microstructure and stoichiometry. Grain size effects on conductivity losses, ferroelectric losses, ferroelectric dispersion, Maxwell-Wagner dispersion, and dielectric aging of permittivity and loss were observed. For the fine-grain material, these observations suggest the suppression of domain wall motion below the Curie transition, and the suppression of conductivity above the Curie transition.

Ostrander, Steven Paul

468

Raman scattering study of barium borate glasses and melts  

NASA Astrophysics Data System (ADS)

Glasses and melts of xBaO-(100-x)B2O3 (x=20, 25, 30, 35, 40, 45, 50, 55, 60 and 67 mol%) composition have been prepared and studied using high-temperature Raman spectroscopy. It was shown that the structure of the glassy and molten samples with relatively low concentrations of barium oxide (x=20-35 mol%) consists of [B?4]- charged tetrahedra (? is a bridging oxygen atom), B?2O- asymmetric triangles (O- is a non-bridging oxygen atom) and B?3 neutral units. The concentration of [B?4]- tetrahedra (N4) monotonously decreases with increasing BaO content in the melts structure, whereas N4 demonstrates a maximum at x?40 mol% in the glassy samples. B?O22- pyroborate units appear at x?40 mol%, and BO33- orthoborate anions are also formed in the melts structure when x=60 and 67 mol%. The dominant mechanisms for the structural reorganizations generated by changes in temperature depend on the melt composition. The changes in the short range order (SRO) structures can be described by the [B?4]-?B?2O- isomerization reaction at 2550 is most likely described by the 2B?2O?B?O22-+B?3 disproportionation reaction. In both cases, the equilibrium shifts to the right with an increase in temperature. Significant changes in the local structures of melts with a low concentration of barium oxide (x?20 mol%) were not found.

Osipov, Armenak A.; Osipova, Leyla M.

2013-07-01

469

Short-term effects of intratracheal installations of yttrium barium copper oxide.  

National Technical Information Service (NTIS)

Inhalation exposures to the new high-temperature ((Tc)) superconductor (SC) materials can occur during manufacturing and fabrication processes. In this exploratory study, we examined the pulmonary response to the deposition of an yttrium barium copper oxi...

J. E. London L. R. Newkirk B. E. Lehnert

1990-01-01

470

Numberical simulation of the effects of radially injected barium plasma in the ionosphere  

NASA Astrophysics Data System (ADS)

The morphology of the ion cloud in the radial shaped charge barium injection was studied. The shape of the ion cloud that remains after the explosive products and neutral barium clears away was examined. The ion cloud which has the configuration of a rimless wagon wheel is shown. The major features are the 2.5 km radius black hole in the center of the cloud, the surrounding ring of barium ion and the spokes of barium ionization radiating away from the center. The cloud shows no evolution after it emerges from the neutral debris and it is concluded that it is formed within 5 seconds of the event. A numerical model is used to calculate the motion of ions and electrons subject to the electrostatic and lorenz forces.

Swift, D. W.

1985-04-01

471

Structures of 90(degrees) domain walls in ferroelectric barium titanate ceramics.  

National Technical Information Service (NTIS)

Ferroelectric domain walls in tetragonal ferroelectric barium titanate ceramics are studied by means of electron microscopy. SEM and TEM observations are consistent with domain configuration already proposed. Conventional TEM measurements on SADP agree ve...

L. Normand A. Thorel R. Kilaas

1995-01-01

472

Study of the structure of ferroelectric domain walls in barium titanate ceramics.  

National Technical Information Service (NTIS)

Structure of 90(degree) ferroelectric domain boundaries in barium titanate ceramics has been studied by means of Transmission Electron Microscopy and High Resolution TEM. Tilts of specific fringes across domain walls are measured on HREM images and Select...

L. Normand A. Thorel R. Kilaas Y. Montardi

1995-01-01

473

Barium and Neodymium Isotopic Composition of Presolar SiC Grains  

NASA Astrophysics Data System (ADS)

We simultaneously measured barium and neodymium isotopic composition of 62 unclassified individual acid-washed presolar SiC grains from the Murchison meteorites by resonant ionization mass spectrometry (RIMS) at Argonne National Laboratory.

Liu, N.; Savina, R. M.; Davis, A. M.; Willingham, D. G.; Pellin, M.; Dauphas, N.

2012-09-01

474

Numberical simulation of the effects of radially injected barium plasma in the ionosphere  

NASA Technical Reports Server (NTRS)

The morphology of the ion cloud in the radial shaped charge barium injection was studied. The shape of the ion cloud that remains after the explosive products and neutral barium clears away was examined. The ion cloud which has the configuration of a rimless wagon wheel is shown. The major features are the 2.5 km radius black hole in the center of the cloud, the surrounding ring of barium ion and the spokes of barium ionization radiating away from the center. The cloud shows no evolution after it emerges from the neutral debris and it is concluded that it is formed within 5 seconds of the event. A numerical model is used to calculate the motion of ions and electrons subject to the electrostatic and lorenz forces.

Swift, D. W.

1985-01-01

475

Severe acute cholangitis after endoscopic sphincterotomy induced by barium examination: A case report.  

PubMed

Endoscopic sphincterotomy (EST) is considered as a possible etiological factor for severe cholangitis. We herein report a case of severe cholangitis after endoscopic sphincterotomy induced by barium examination. An adult male patient presented with epigastric pain was diagnosed as having choledocholithiasis by ultrasonography. EST was performed and the stone was completely cleaned. Barium examination was done 3 d after EST and severe cholangitis appeared 4 h later. The patient was recovered after treated with tienam for 4 d. Barium examination may induce severe cholangitis in patients after EST, although rare, barium examination should be chosen cautiously. Cautions should be also used when EST is performed in patients younger than 50 years to avoid the damage to the sphincter of Oddi. PMID:23112564

Zhang, Zhen-Hai; Wu, Ya-Guang; Qin, Cheng-Kun; Su, Zhong-Xue; Xu, Jian; Xian, Guo-Zhe; Wu, Shuo-Dong

2012-10-21

476

Growth, Characterization and Applications of Beta-Barium Borate and Related Crystals.  

National Technical Information Service (NTIS)

Emphasis of our program during the past year has been on improving the size and quality of beta-barium borate (BBO) crystal, develop the growth recipe for lithium triborate crystal (LBO), characterization of LBO, develop BBO optical parametric oscillators...

C. L. Tang

1991-01-01

477

Comparison of the reflectance characteristics of polytetrafluoroethylene and barium sulfate paints  

NASA Astrophysics Data System (ADS)

Preliminary results are presented of the directional reflectance measurements taken on two tetrafluorethylene (TFE) paints formulated with silicone binders. Both paints are found to be more Lambertian than barium sulfate paint and pressed powder, although the pigment to binder ratios for barium sulfate and TFE paints are about 133 and 3.3 to 1, respectively. The TFE paints exhibit total visible reflectances above 90 percent and offer surfaces that are not significantly affected by water.

Butner, C. L.; Schutt, J. B.; Shai, M. C.

1984-04-01

478

Dissolution of Barium from Barite in Sewage Sludges and Cultures ofDesulfovibrio desulfuricans  

Microsoft Academic Search

to 0.3 g zliter 21 (the latter is the MIC) as the only source of sulfates in the cultures, theD. desulfuricansstrain accumulated barium up to 0.58 mg zmg 21 (dry weight). Three times the quantity of barium was dissolved by bacteriathanintheuninoculatedmedium(control).Theunexpectedlylowconcentrationofsolublebarium(1.2 mg of Ba zliter 21 ) with respect to the quantity expected (109 mg of Ba zliter 21 ),

FRANCO BALDI; MILVA PEPI; DANIELA BURRINI; GORAN KNIEWALD; DANIELA SCALI; ANDEUDES LANCIOTTI

1996-01-01

479

Preparation and magnetic properties of composite powders of hollow microspheres coated with barium ferrite  

Microsoft Academic Search

The composites of barium ferrite coated on hollow ceramic microspheres are successfully prepared using sol–gel combustion method. The crystal structure and magnetic properties with different weight ratio of hollow microspheres in the composite are studied with X-ray diffraction (XRD), differential scanning calorimetry (DSC)\\/DTA and vibrating sample magnetometry (VSM). The results show that the composites are composed of barium ferrite and

Guohong Mu; Xifeng Pan; Haigen Shen; Mingyuan Gu

2007-01-01

480

Barium isotopes in Allende meteorite - Evidence against an extinct superheavy element  

NASA Technical Reports Server (NTRS)

Carbon and chromite fractions from the Allende meteorite that contain isotopically anomalous xenon-131 to xenon-136 (carbonaceous chondrite fission or CCF xenon) at up to 5 x 10 to the 11th atoms per gram show no detectable isotopic anomalies in barium-130 to barium-138. This rules out the possibility that the CCF xenon was formed by in situ fission of an extinct superheavy element. Apparently the CCF xenon and its carbonaceous carrier are relics from stellar nucleosynthesis.

Lewis, R. S.; Anders, E.; Shimamura, T.; Lugmair, G. W.

1983-01-01

481

Dielectric relaxation studies of alkali-metal-doped strontium and barium fluoride  

Microsoft Academic Search

The audio frequency dielectric constant has been determined over the temperature range 5.5-400K for various samples of alkali-doped strontium and barium fluoride. For strontium fluoride, strong relaxations are found for sodium, potassium, and rubidium dopants and the activation energy is largest for the potassium dopant. For barium fluoride, strong relaxations are observed for potassium and rubidium and the activation energy

M. C. Wintersgill; J. J. Fontanella; R. Saghafian; A. V. Chadwick; C. G. Andeen

1980-01-01

482

Microwave absorption of nanosized barium ferrite particles prepared using high-energy ball milling  

Microsoft Academic Search

The M-type hexagonal barium ferrite powder was obtained after the calcination of precursor, which was prepared with self-propagating high-temperature synthesis. Using high-energy ball milling, the powder size was turned into nanoscale. X-ray diffraction (XRD), transmission electron microscope (TEM) and vector network analyzer were used to analyse its structure and microwave absorption property. The results indicate that the nanoscale milled barium

Jianxun Qiu; Haigen Shen; Mingyuan Gu

2005-01-01

483

Synthesis, characterization and microwave absorption properties of titania-coated barium ferrite composites  

Microsoft Academic Search

Anatase titania-coated barium ferrite composites were prepared by a heterogeneous precipitation method in the presence of barium ferrite particles. The obtained samples were characterized by xi-pH, TEM, EDX and XRD. The complex permittivity and permeability were studied in the frequency range of 2 12 GHz. The structure and microwave response properties are investigated. The results show that the coverage of

X. Tang; B. Y. Zhao; Q. Tian; K. A. Hu

2006-01-01

484

Synthesis, characterization and microwave absorption properties of titania-coated barium ferrite composites  

Microsoft Academic Search

Anatase titania-coated barium ferrite composites were prepared by a heterogeneous precipitation method in the presence of barium ferrite particles. The obtained samples were characterized by ?-pH, TEM, EDX and XRD. The complex permittivity and permeability were studied in the frequency range of 2–12GHz. The structure and microwave response properties are investigated. The results show that the coverage of titania has

X. Tang; B. Y. Zhao; Q. Tian; K. A. Hu

2006-01-01

485

Sol-gel processing and properties of cerium doped Barium Strontium Titanate thin films  

Microsoft Academic Search

A stock solution sol-gel based method for making Barium Strontium Titanate (BST) thin films has been developed. A modified titanium alkoxide was combined with a barium and\\/or strontium inorganic salt in methoxyethanol and ethylene glycol to form the solution. The effect of chemistry on the stability of this BST solution is discussed. The crystallization temperature of 700–725°C for rapid thermally

M. Sedlar; M. Sayer; L. Weaver

1995-01-01

486

Preparation and characterization of single-crystalline barium strontium titanate nanocubes via solvothermal method  

Microsoft Academic Search

Single-crystalline barium strontium titanate nanocubes were synthesized via the solvothermal synthesis using TiCl4–BaCl2 as precursors in the mixed solvent of water–ethanol–ethylene glycol monomethyl ether. The products were characterized by XRD, TEM and XRF. The well-dispersed barium strontium titanate nanocubes with narrow particle size distribution may be attained by this simple solvothermal method and the particle morphology and size of powders

Bo Hou; Yao Xu; Dong Wu; Yuhan Sun

2006-01-01

487

Precipitation of Barite by Myxococcus xanthus: Possible Implications for the Biogeochemical Cycle of Barium  

PubMed Central

Bacterial precipitation of barite (BaSO4) under laboratory conditions is reported for the first time. The bacterium Myxococcus xanthus was cultivated in a solid medium with a diluted solution of barium chloride. Crystallization occurred as a result of the presence of live bacteria and the bacterial metabolic activity. A phosphorous-rich amorphous phase preceded the more crystalline barite formation. These experiments may indicate the involvement of bacteria in the barium biogeochemical cycle, which is closely related to the carbon cycle.

Gonzalez-Munoz, Maria Teresa; Fernandez-Luque, Belen; Martinez-Ruiz, Francisca; Ben Chekroun, Kaoutar; Arias, Jose Maria; Rodriguez-Gallego, Manuel; Martinez-Canamero, Magdalena; de Linares, Concepcion; Paytan, Adina

2003-01-01

488

Longitudinal recording performance of sputtered barium ferrite media on a carbon rigid disk substrate  

Microsoft Academic Search

We report the first measurement of the longitudinal magnetic recording properties of as-deposited crystalline thin film barium ferrite media. Using facing target sputtering, randomly oriented crystalline barium ferrite (BaFe12O19, BaM) has been deposited onto an Ultra Densified Amorphous Carbon substrate, producing high quality films in-situ at a substrate temperature of 660°C without any post-deposition annealing. In order to prevent diffusion

Stephen S. Rosenblum; Hidetaka Hayashi; Jinshan Li; R. Sinclair

1994-01-01

489

The Effect of High vs Low Density Barium Preparations on the Quantitative Features of Swallowing  

Microsoft Academic Search

We compared the effect of high-density and low-density barium preparations on the quantitative features of swallowing. The two barium preparations differed primarily in density but also differed somewhat in viscosity. Concurrent videofluoroscopic and manometric studies were done in nine healthy control subjects. Videofluoroscopy was recorded in the lateral projection at 30 frames\\/sec while concurrent manometry was done with five intraluminal

Wylie J. Dodds; Benson T. Massey; Mark K. Kern

1989-01-01

490

Ammonia fuel cell using doped barium cerate proton conducting solid electrolytes  

Microsoft Academic Search

Proton-conducting solid electrolytes composed of gadolinium-doped barium cerate (BCG) or gadolinium and praseodymium-doped barium cerate (BCGP) were tested in an intermediate-temperature fuel cell in which hydrogen or ammonia was directly fed. At 700°C, BCG electrolytes with porous platinum electrodes showed essentially no loss in performance in pure hydrogen. Under direct ammonia at 700°C, power densities were only slightly lower compared

L. Pelletier; A. McFarlan; N. Maffei

2005-01-01

491

AFM studies of swift heavy ion and electron irradiated mixed barium strontium borate nonlinear optical crystal  

Microsoft Academic Search

Single crystals of novel nonlinear optical material of mixed barium strontium borate is grown in our laboratory by employing the low-temperature solution technique. Equal proportion (1:1 molar ratio) of AR grade barium borate and strontium borate are mixed together in double distilled water to prepare a supersaturated solution. The solution is allowed to evaporate at constant temperature (30°C) in a

S. Ishwar Bhat; N. Govinda Nayak; Vijayalakshmi Rao; V. Ganesan; H. S. Nagaraj; D. K. Avasthi

2003-01-01

492

Physical properties of barium borate glasses determined over a wide range of compositions  

Microsoft Academic Search

Barium borate glasses are reported over an extended glass-forming range from R=0.2 (16.7 mol% BaO) to R=2.0 (66.7 mol% BaO), where R is the molar ratio of barium oxide to boron oxide. The density, Tg (glass transition temperature), Tx (glass recrystallization temperature), and optical cutoffs were determined. These data were compared with structural models for the glasses based on nuclear

Shalini Kapoor; Henry Bola George; Ashlea Betzen; Mario Affatigato; Steve Feller

2000-01-01

493

Barium isotopes in Allende meteorite - Evidence against an extinct superheavy element  

NASA Astrophysics Data System (ADS)

Carbon and chromite fractions from the Allende meteorite that contain isotopically anomalous xenon-131 to xenon-136 (carbonaceous chondrite fission or CCF xenon) at up to 5×1011 atoms per gram show no detectable isotopic anomalies in barium-130 to barium-138. This rules out the possibility that the CCF xenon was formed by in situ fission of an extinct superheavy element. Apparently the CCF xenon and its carbonaceous carrier are relics from stellar nucleosynthesis.

Lewis, R. S.; Anders, E.; Shimamura, T.; Lugmair, G. W.

1983-12-01

494

Preparation of barium titanate nanoparticle sphere arrays and their dielectric properties  

Microsoft Academic Search

Barium titanate (BaTiO3) nanoparticles from 27 to 192 nm were prepared by the 2-step thermal decomposition method from barium titanyl oxalate nanoparticles. These particles were dispersed well into 1-propanol, and dense BaTiO3 nanoparticle sphere arrays without stress-field were prepared by the meniscus method. Temperature dependence of dielectric properties was successfully measured using these dense nanoparticle sphere arrays, and size effect

Satoshi Wada; Aki Yazawa; Takuya Hoshina; Yoshikazu Kameshima; Hirofumi Kakemoto; Takaaki Tsurumi; Yoshihiro Kuroiwa

2008-01-01