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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. PMID:2025821

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

1991-01-01

2

Routine colonic lavage is unnecessary for double-contrast barium enema in outpatients  

PubMed Central

Four different cleansing regimens were assessed in a prospective survey of 435 patients referred for barium enema. A regimen using simple dietary instructions and laxatives is as effective as a preliminary cleansing enema. It is suggested that routine cleansing enemas in outpatients represent an unnecessary and uncomfortable ritual that might usefully be abandoned. PMID:6802391

De Lacey, Gerald; Benson, Mark; Wilkins, Robert; Spencer, John; Cramer, Benvon

1982-01-01

3

Barium Enema Examination  

MedlinePLUS

Barium Enema Examination What you need to know about… A barium enema examination dem- onstrates your large bowel (colon). ... a diagnostically useful image. Prior to performing your barium enema examination, the radiographer will give you a ...

4

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 ...

5

21 CFR 201.304 - Tannic acid and barium enema preparations.  

Code of Federal Regulations, 2013 CFR

...2013-04-01 2013-04-01 false Tannic acid and barium enema preparations. 201...Specific Drug Products § 201.304 Tannic acid and barium enema preparations. (a) It has become a widespread practice for tannic acid to be added to barium enemas to...

2013-04-01

6

21 CFR 201.304 - Tannic acid and barium enema preparations.  

Code of Federal Regulations, 2012 CFR

...2012-04-01 2012-04-01 false Tannic acid and barium enema preparations. 201...Specific Drug Products § 201.304 Tannic acid and barium enema preparations. (a) It has become a widespread practice for tannic acid to be added to barium enemas to...

2012-04-01

7

21 CFR 201.304 - Tannic acid and barium enema preparations.  

...2014-04-01 2014-04-01 false Tannic acid and barium enema preparations. 201...Specific Drug Products § 201.304 Tannic acid and barium enema preparations. (a) It has become a widespread practice for tannic acid to be added to barium enemas to...

2014-04-01

8

21 CFR 201.304 - Tannic acid and barium enema preparations.  

Code of Federal Regulations, 2010 CFR

...2010-04-01 2010-04-01 false Tannic acid and barium enema preparations. 201...Specific Drug Products § 201.304 Tannic acid and barium enema preparations. (a) It has become a widespread practice for tannic acid to be added to barium enemas to...

2010-04-01

9

21 CFR 201.304 - Tannic acid and barium enema preparations.  

Code of Federal Regulations, 2011 CFR

...2011-04-01 2011-04-01 false Tannic acid and barium enema preparations. 201...Specific Drug Products § 201.304 Tannic acid and barium enema preparations. (a) It has become a widespread practice for tannic acid to be added to barium enemas to...

2011-04-01

10

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

11

The value of the preoperative barium-enema examination in the assessment of pelvic masses  

SciTech Connect

The value of the barium-enema examination in the assessment of pelvic masses was studied in 44 patients. Findings from those barium-enema examinations and from pathological specimens from 37 patients who had malignant tumors and seven patients who had endometriosis were retrospectively analyzed to determine if the barium-enema examination is useful in differentiating extrinsic lesions with and without invasion of the colon. None of the 12 patients who had extrinsic lesions had any of the criteria that indicated bowel-wall invasion. These criteria included fixation and serrations of the bowel wall in all patients with invasion, and ulceration and fistulizaton in those patients who had complete transmural invasion. In patients with pelvic masses, the preoperative barium-enema examination may be useful to the surgeon in planning surgery and in preparing the patient for the possibility of partial colectomy or colostomy.

Gedgaudas, R.K.; Kelvin, F.M.; Thompson, W.M.; Rice, R.P.

1983-03-01

12

Colonoscopy can miss diverticula of the left colon identified by barium enema  

PubMed Central

AIM: To identify the diagnostic value of colonoscopy for diverticulosis as determined by barium enema. METHODS: A total of 65 patients with hematochezia who underwent colonoscopy and barium enema were analyzed, and the diagnostic value of colonoscopy for diverticula was assessed. The receiver operating characteristic area under the curve was compared in relation to age (< 70 or ? 70 years), sex, and colon location. The number of diverticula was counted, and the detection ratio was calculated. RESULTS: Colonic diverticula were observed in 46 patients with barium enema. Colonoscopy had a sensitivity of 91% and specificity of 90%. No significant differences were found in the receiver operating characteristic area under the curve (ROC-AUC) for age group or sex. The ROC-AUC of the left colon was significantly lower than that of the right colon (0.81 vs 0.96, P = 0.02). Colonoscopy identified 486 colonic diverticula, while barium enema identified 1186. The detection ratio for the entire colon was therefore 0.41 (486/1186). The detection ratio in the left colon (0.32, 189/588) was significantly lower than that of the right colon (0.50, 297/598) (P < 0.01). CONCLUSION: Compared with barium enema, only half the number of colonic diverticula can be detected by colonoscopy in the entire colon and even less in the left colon. PMID:23613630

Niikura, Ryota; Nagata, Naoyoshi; Shimbo, Takuro; Akiyama, Junichi; Uemura, Naomi

2013-01-01

13

Therapeutic barium enema for bleeding colonic diverticula: four case series and review of the literature.  

PubMed

The prevalence of diverticular diseases of the colon, including severe and persistent bleeding in Eastern countries, has increased in the last decades. The bleeding from colonic diverticula is the most common cause of acute lower gastrointestinal bleeding. Herein, we report four cases of severe and persistent bleeding of colonic diverticular disease that could be treated with a high concentration barium enema. These four cases showed a similar pattern of bleeding whose source could not be identified. Colonoscopy revealed fresh blood in the entire colon and many diverticula were noted throughout the colon. No active bleeding source was identified, but large adherent clots in some diverticula were noted. After endoscopic and angiographic therapies failed, therapeutic barium enema stopped the severe bleeding. These patients remained free of re-bleeding in the follow-up period (range 17-35 mo) after the therapy. We report the four case series of therapeutic barium enema and reviewed the literature pertinent to this procedure. PMID:19009662

Iwamoto, Jun-ichi; Mizokami, Yuji; Shimokobe, Koichi; Matsuoka, Takeshi; Matsuzaki, Yasushi

2008-11-01

14

Therapeutic barium enema for bleeding colonic diverticula: Four case series and review of the literature  

PubMed Central

The prevalence of diverticular diseases of the colon, including severe and persistent bleeding in Eastern countries, has increased in the last decades. The bleeding from colonic diverticula is the most common cause of acute lower gastrointestinal bleeding. Herein, we report four cases of severe and persistent bleeding of colonic diverticular disease that could be treated with a high concentration barium enema. These four cases showed a similar pattern of bleeding whose source could not be identified. Colonoscopy revealed fresh blood in the entire colon and many diverticula were noted throughout the colon. No active bleeding source was identified, but large adherent clots in some diverticula were noted. After endoscopic and angiographic therapies failed, therapeutic barium enema stopped the severe bleeding. These patients remained free of re-bleeding in the follow-up period (range 17-35 mo) after the therapy. We report the four case series of therapeutic barium enema and reviewed the literature pertinent to this procedure. PMID:19009662

Iwamoto, Jun-ichi; Mizokami, Yuji; Shimokobe, Koichi; Matsuoka, Takeshi; Matsuzaki, Yasushi

2008-01-01

15

Phased surgical treatment of barium enema-induced rectal injury and retention of barium in the pelvic floor space  

PubMed Central

Iatrogenic injuries caused by barium enema are rarely reported. Following a phased surgical protocol for up to one year, we have successfully treated a patient with rectal injury and severe infection of the pelvic floor space complicated with retention of large amounts of barium and vaginal fistula. In this article, the phased surgery planning for the treatment of rectal injury complicated with vaginal fistula is discussed in terms of the pros and cons, and the observed effect and evolution of barium retained in the pelvic floor space are described. PMID:25405155

Yang, Xuefei; Xia, Ligang; Huang, Jun; Wang, Jianping

2014-01-01

16

Sensitivity of double contrast barium enema and colonoscopy for the detection of colorectal neoplasms  

Microsoft Academic Search

  Background: Double contrast barium enema (DCBE) is the examination carried out most frequently for investigation of patients\\u000a with large bowel symptoms. The aim of this study was to compare the sensitivity of DCBE and colonoscopy for the detection\\u000a of colorectal cancer and neoplastic polyps ?1 cm. Methods: All patients undergoing DCBE (1389) or colonoscopy (1081) as the\\u000a primary investigation for

G. A. Smith; P. J. O'Dwyer

2001-01-01

17

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

18

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. PMID:24156777

2013-01-01

19

Non-laxative CT colonography with barium-based faecal tagging: is additional phosphate enema beneficial and well tolerated?  

PubMed Central

Objective The purpose of this study was to investigate the efficacy and tolerance of an additional phosphate enema prior to non-laxative CT colonography (CTC). Methods 71 patients (mean age 80 years, 28 male, 43 female) underwent non-laxative CTC following 4 oral doses of diluted 2% w/w barium sulphate. Patients were invited to self-administer a phosphate enema 2 h before CTC. An experienced observer graded the volume of retained stool (1 (nil) to 4 (>75% bowel circumference coated)), retained fluid ((1 (nil) to 4 (>50% circumference obscured)), retained stool tagging quality (1 (untagged) to 5 (?75% to 100%) tagged) and confidence a polyp ?6 mm could be excluded (yes/no) for each of six colonic segments. Tolerance of the enema was assessed via questionnaire. Data were analysed between those using and not using the enema by Mann–Whitney and Fisher's exact test. 18/71 patients declined the enema. Results There was no reduction in residual stool volume with enema use compared with non-use either overall (mean score 2.6 vs 2.7, p = 0.76) or in the left colon (mean 2.3 vs 2.4, p = 0.47). Overall tagging quality was no different (mean score 4.4 vs 4.3, p = 0.43). There was significantly more retained left colonic fluid post enema (mean score 1.9 vs 1.1, p<0.0001), and diagnostic confidence in excluding polyps was significantly reduced (exclusion not possible in 35% segments vs 21% without enema, p = 0.006). Of 53 patients, 30 (56%) found the enema straightforward to use, but 4 (8%) found it unpleasant. Conclusion Phosphate enema use prior to non-laxative CTC leads to greater retained fluid, reducing diagnostic confidence, and is not recommended. PMID:20959374

Davis, W; Nisbet, P; Hare, C; Cooke, P; Taylor, S A

2011-01-01

20

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, ...

21

The double contrast barium enema: improvements to lateral decubitus views including the use of a wedge filter.  

PubMed

The prognostic importance of early detection of colonic carcinoma is emphasised and the contribution of an accurate barium enema technique is stressed. Horizontal beam lateral decubitus films are routine in double contrast barium enemas, and it is still common practice in many departments to support the cassette for these views either in the bucky tray or with sandbags. The lateral decubitus views of 100 patients using these methods of cassette support were reviewed. A large number of the films (67%) were technically so unsatisfactory due to unilateral under- or over-penetration that they did not provide acceptable visualisation of the colon. The cause of these technical faults, and the methods by which they may be overcome, are described. In addition, a wedge filter was designed to reduce the absorption by dependent soft tissues in obese patients. PMID:639459

De Lacey, G; Wignall, B; Ambrose, J; Baylis, K; Bridges, C

1978-03-01

22

A double-blind randomised, placebo-controlled trial evaluating the influence of oral long-acting muscle relaxant (Mebeverine MR), and insufflation with CO(2) on pain associated with barium enema.  

PubMed

Previous investigators have shown significant benefit using CO(2) for bowel insufflation. Others have suggested that the long-acting smooth muscle relaxant, Mebeverine, may be of benefit. We subjected this to a randomised double-blind trial. A total of 181 outpatients were randomised to receive either Mebeverine or placebo as pre-medication, and either air or CO(2) for bowel insufflation, thus creating four treatment groups. Visual-analogue lines were used to record pain scores before, during, and up to 8 h following the enema. All groups showed increased pain scores during the enema, with peak pain scores at the end of the examination, falling to baseline scores by 8 h. Patients receiving the combination of C0(2) and placebo had significantly lower pain scores at 1 and 4 h ( P=0.00 and P=0.014, respectively; Kruskal-Wallis test) compared with all other groups. Having Mebeverine as a pre-medication did not significantly lower pain scores compared with placebo, and decreased the amount of benefit received from the CO(2). We confirm that CO(2) is of benefit in decreasing pain during barium enema, and we recommend its routine use to improve the comfort of patients. Mebeverine is not of benefit, and its use as a pre-medication for enemas is not recommended. PMID:12835983

Lowe, A S; Chapman, A H; Wilson, D; Culpan, A G

2003-07-01

23

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

PubMed

To assess the accuracy of the flexible fiberoptic sigmoidoscope, 227 consecutive patients (mean age 61.8 +/- 13 years) requiring investigation of colonic symptoms were evaluated using rigid and flexible sigmoidoscopy (PAF and KDV) and double-contrast barium enema (SSA). Patients with equivocal findings or adenomatous polyps underwent colonoscopy (TWB). Thirty-four patients had carcinoma and 50 patients had one or more adenomatous polyps (greater than 5mm). The neoplastic yield from rigid sigmoidoscopy was 12 per cent, flexible fiberoptic sigmoidoscopy 90 per cent, and double-contrast barium enema only 76 per cent. Barium enema failed to identify eight carcinomas and 13 adenomatous polyps; seven of the eight carcinomas were polypoid Dukes' Stage A lesions, and associated diverticular disease was present in 62.5 per cent of cases. Flexible fiberoptic sigmoidoscopy failed to identify seven carcinomas and one adenomatous polyp. Five of the carcinomas were beyond range of the instrument; in one patient, a stricture was seen that was caused by the carcinoma; and in the seventh patient, the examination was terminated because of angulation spasm. Double-contrast barium enema is inaccurate in detecting lesions in the sigmoid colon, with flexible sigmoidoscopy being superior. PMID:6628146

Farrands, P A; Vellacott, K D; Amar, S S; Balfour, T W; Hardcastle, J D

1983-11-01

24

Patient satisfaction and quality of care at four diagnostic imaging procedures: mammography, double-contrast barium enema, abdominal ultrasonography and vaginal ultrasonography  

Microsoft Academic Search

.   The objective of this study was to measure patient satisfaction and to investigate the practical implications of monitoring\\u000a the quality of care at four radiology procedures. A survey was conducted immediately after the examinations in eight radiology\\u000a departments: 550 patients attending for mammography, 110 for double-contrast barium enema (DCBE), 97 for abdominal ultrasonography\\u000a and 90 for vaginal ultrasonography. Outcome

K. Løken; S. Steine; E. Lærum

1999-01-01

25

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

26

Lower GI Series (Barium Enema)  

MedlinePLUS

... series by talking with a health care provider cleansing the bowel Talking with a health care provider. ... he or she may suggest a different procedure. Cleansing the bowel. The health care provider will give ...

27

Retrograde spread of 5-aminosalicylic acid enemas in patients with active ulcerative colitis  

SciTech Connect

In an attempt to know the exact retrograde spread of high-dosage 5-aminosalicylic acid enemas, we have studied eight patients with active left-sided colitis, by adding a small amount of barium sulfate to the enemas and by checking the spread radiologically after 15 minutes, 1 hour, and 6 hours. Four grams of 5-aminosalicylic acid in 100-ml enemas and 4 gm in 200-ml enemas were used. The same experiment was repeated in a subsequent attack, with enemas labeled with technetium-99m and checked by scintiscans in five of these patients. We always have observed a volume-dependent spread of enemas but, interestingly, in the patients studied with technetium-99m there was always a wider spread than that which was detected with barium enemas. In all five patients, 100-ml enemas reached the splenic flexure. In two patients with total colitis, a progression of 100-ml technetium-99m enemas was performed in the transverse colon, but the maximum opacity remained in the left side. We can conclude that 4 gm of 5-aminosalicylic acid in 100-ml enemas can be suitable for treating patients with left-sided colitis, and will represent a valid addition for patients with more extensive colitis.

Campieri, M.; Lanfranchi, G.A.; Brignola, C.; Bazzocchi, G.; Gionchetti, P.; Minguzzi, M.R.; Cappello, I.P.; Corbelli, C.; Boschi, S.

1986-02-01

28

Optimum dosage of 5-aminosalicylic acid as rectal enemas in patients with active ulcerative colitis.  

PubMed Central

5-Aminosalicylic acid (5-ASA), the active moiety of sulphasalazine (SASP), was given as a rectal enema to patients with mild to moderate distal ulcerative colitis to determine the minimum effective dosage. A double blind study was carried out using enemas containing 1, 2, or 4 g or 5-ASA or placebo for a one month treatment period. One hundred and thirteen patients with ulcerative colitis attending our outpatient clinic volunteered to participate. Clinical, sigmoidoscopic, and histological assessments were carried out at the beginning of the study and after 15 and 30 days of treatment. All patients who received 5-ASA enemas showed significantly better results than those who received a placebo enema (p less than 0.001) but no difference was detected among the patients receiving differing concentrations of 5-ASA. This study suggests that 1 g 5-ASA (in a 100 ml enema) is a sufficient dosage for patients with a mild to moderate attack of ulcerative colitis. PMID:1885075

Campieri, M; Gionchetti, P; Belluzzi, A; Brignola, C; Tampieri, M; Iannone, P; Miglioli, M; Barbara, L

1991-01-01

29

Proper management for morbid iatrogenic retroperitoneal barium insufflation.  

PubMed

A barium enema is a diagnostic and therapeutic procedure commonly used for colon and rectum problems. Rectal perforation with extensive intra- and/or extraperitoneal spillage of barium is a devastating complication of a barium enema that leads to a significant increase in patient mortality. Due to the low number of reported cases in recent scientific literature and the lack of experience with the management of these cases, we would like to present our treatment approach to a rare case of retroperitoneal contamination with barium, followed by its intraperitoneal involvement during a diagnostic barium enema. Our experience with long-term management of the patient and the good outcome will be depicted in this paper. PMID:25580416

Vahedian-Ardakani, Jalal; Nazerani, Shahram; Saraee, Amir; Sarmast, Ali; Saraee, Ehsan; Keramati, Mohammad Reza

2014-12-01

30

Proper Management for Morbid Iatrogenic Retroperitoneal Barium Insufflation  

PubMed Central

A barium enema is a diagnostic and therapeutic procedure commonly used for colon and rectum problems. Rectal perforation with extensive intra- and/or extraperitoneal spillage of barium is a devastating complication of a barium enema that leads to a significant increase in patient mortality. Due to the low number of reported cases in recent scientific literature and the lack of experience with the management of these cases, we would like to present our treatment approach to a rare case of retroperitoneal contamination with barium, followed by its intraperitoneal involvement during a diagnostic barium enema. Our experience with long-term management of the patient and the good outcome will be depicted in this paper. PMID:25580416

Vahedian-Ardakani, Jalal; Nazerani, Shahram; Saraee, Amir; Sarmast, Ali; Saraee, Ehsan

2014-01-01

31

The malone antegrade continence enema  

Microsoft Academic Search

The previously reported Malone antegrade continence enema (MACE) was used in 21 children for intractable fecal incontinence or constipation. Twelve are completely clean, and three are much improved (71% success rate). However, only four of the 21 have not had some type of complication, either minor or major. Five of the 21 now have a colostomy, and one has abandoned

D. M Griffiths; P. S Malone

1995-01-01

32

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

33

Barium Sulfate  

MedlinePLUS

Cheetah® ... Barium sulfate is used to help doctors examine the esophagus (tube that connects the mouth and stomach), stomach, ... dimensional pictures of the inside of the body). Barium sulfate is in a class of medications called radiopaque ...

34

Antegrade continence enema (ACE): current practice  

Microsoft Academic Search

The purpose of this study was to assess current status of antegrade continence enema (ACE) procedure taking into account the\\u000a recent improvement in the technique and outcome. Reviewing our record of 48 patients with ACE procedure performed between\\u000a January 2002 and May 2007, we found that the underlying diagnoses were idiopathic constipation in 56%, anorectal malformation\\u000a in 31%, spina bifida

Chandrasen Kumar Sinha; Alka Grewal; Harry C. Ward

2008-01-01

35

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. PMID:16143691

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

2005-01-01

36

SOURCE ASSESSMENT: MAJOR BARIUM CHEMICALS  

EPA Science Inventory

This report summarizes data on air emissions from the production of major barium chemicals. Compounds studied include barium sulfide, barium carbonate, barium chloride, barium hydroxide, and barium sulfate. In order to evaluate potential environmental effects the source severity,...

37

Double contrast enema and colonoscopy in polyp detection.  

PubMed Central

The diagnostic accuracy of double contrast enema was assessed by colonoscopy of 250 consecutive patients with polypoid lesions that were observed at double contrast enema. The enema method detected 90% of all existing polypoid lesions, and gave false positive results in less than 3.5% Colonoscopy revealed 91% of the lesions. Double contrast enema is suitable as a screening procedure and, when used in combination with colonoscopy, only very few polyps will escape detection. The large number of neoplastic polyps detected in this retrospective series emphasises the necessity for a careful radiographic technique combined with colonoscopy to disclose and treat these potentially malignant lesions of the colon. Images Fig. 1 Fig. 2 Fig. 3 Fig. 4 PMID:7308852

Fork, F T

1981-01-01

38

[Outpatient emergencies].  

PubMed

The outpatient monitoring of patients sometimes involves emergency situations. In their practice, the nurses who visit the patient's home are confronted with the limits of their intervention. Faced with these delicate situations team coordination is a strength and the reactivity of the caregivers often contributes to a satisfactory outcome for the patient. PMID:24979919

Rivallan, Armel; Le Nagard, Philippe

2014-01-01

39

Use of A Monti Channel For Administration of Antegrade Continence Enemas  

Microsoft Academic Search

PurposeSuccess with Malone antegrade continence enemas (MACE) requires reliable access to the colon and a customized enema regimen. Use of the appendix in situ provides a natural and well-vascularized conduit. When the appendix is absent or inadequate, alternative techniques are required. We report our experience using Monti channels to administer antegrade continence enemas.

Elizabeth B. Yerkes; Richard C. Rink; Mark P. Cain; Anthony J. Casale

2002-01-01

40

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

41

[Severe allergic reaction due to a rectal enema].  

PubMed

Allergic drug reactions must always be considered when prescribing treatment, even in frequent pediatric problems such as acute abdominal pain due to constipation. We describe an original case of anaphylactic shock due to the administration of hypertonic rectal enema in a child. A 9-year-old child admitted to the emergency department for an acute complaint of abdominal pain related to constipation received an administration of a hypertonic rectal enema to allow the passage of stools. Afterwards, the child presented a life-threatening episode, requiring emergency treatment with transfer to the pediatric intensive care unit, suggesting an anaphylactic shock. The absence of any other drug or food intake, the chronology of events, and favorable outcome after treatment led to the diagnosis of a probable allergy to methylparaben, sodium parahydroxybenzoate, present as the excipient in the rectal enema. Anaphylactic shock is a serious allergic reaction, setting in rapidly, which may lead to fatal outcome. Most reactions to parabens reported concern, almost exclusively, the cutaneous application of paraben-containing topical preparations. The present observation underscores the original and undescribed risk of an allergic general reaction following the rectal administration of parabens. The indications of any prescription must be carefully observed and potential drug contraindications, considering the patient's history of allergy, should be sought. PMID:24183833

Raulin-Gaignard, H; Berlengi, N; Gatin, A; Loeb, O; Borsa-Dorion, A; Monin, P

2013-12-01

42

Antegrade continence enemas in the management of intractable faecal incontinence.  

PubMed Central

The introduction of the Malone procedure has improved the outlook for children with severe faecal incontinence. Phosphate and saline enemas are administered through the exteriorized appendix in antegrade fashion to achieve evacuation and ensure cleanliness. The appendix functions as a non-refluxing catheterizable channel: If it is not available for use, a tubularized caecal flap is a safe alternative. We have constructed Malone stomas using the appendix in 20 patients and another seven patients have undergone the caecal flap modification. The mean age was 8.6 years. Eleven of the patients were boys and 16 (59%) were girls. Six children required dilatation or revision of their stomas for stenosis. One developed small bowel obstruction and another has stopped using the stoma. The results of the continence enemas were considered to be very good by the vast majority of patients and their carers. Our recent experience suggests that bisacodyl may be a valuable adjunct to the antegrade enemas of phosphate and saline. We believe that this procedure may be extended with benefit to adults with serious faecal incontinence in whom standard measures have failed. PMID:7769583

Kiely, E M; Ade-Ajayi, N; Wheeler, R

1995-01-01

43

Self-Administered Ethanol Enema Causing Accidental Death  

PubMed Central

Excessive ethanol consumption is a leading preventable cause of death in the United States. Much of the harm from ethanol comes from those who engage in excessive or hazardous drinking. Rectal absorption of ethanol bypasses the first pass metabolic effect, allowing for a higher concentration of blood ethanol to occur for a given volume of solution and, consequently, greater potential for central nervous system depression. However, accidental death is extremely rare with rectal administration. This case report describes an individual with klismaphilia whose death resulted from acute ethanol intoxication by rectal absorption of a wine enema. PMID:25436159

Peterson, Thomas; Rentmeester, Landen; Judge, Bryan S.; Cohle, Stephen D.; Jones, Jeffrey S.

2014-01-01

44

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

45

Coffee Enema for Preparation for Small Bowel Video Capsule Endoscopy: A Pilot Study  

PubMed Central

Coffee enemas are believed to cause dilatation of bile ducts and excretion of bile through the colon wall. Proponents of coffee enemas claim that the cafestol palmitate in coffee enhances the activity of glutathione S-transferase, an enzyme that stimulates bile excretion. During video capsule endoscopy (VCE), excreted bile is one of the causes of poor preparation of the small bowel. This study aimed to evaluate the feasibility and effect of coffee enema for preparation of the small bowel during VCE. In this pilot study, 17 of 34 patients were assigned to the coffee enema plus polyethylene glycol (PEG) 2 L ingestion group, whereas the 17 remaining control patients received 2 L of PEG only. The quality of bowel preparation was evaluated in the two patient groups. Bowel preparations in the proximal segments of small bowel were not differ between two groups. In the mid and distal segments of the small intestine, bowel preparations tend to be better in patients who received coffee enemas plus PEG than in patients who received PEG only. The coffee enema group did not experience any complications or side effects. Coffee enemas may be a feasible option, and there were no clinically significant adverse events related to coffee enemas. More prospective randomized studies are warranted to improve small bowel preparation for VCE. PMID:25136541

Kim, Eun Sun; Keum, Bora; Seo, Yeon Seok; Jeen, Yoon Tae; Lee, Hong Sik; Um, Soon Ho; Kim, Chang Duck; Ryu, Ho Sang

2014-01-01

46

Barium release system  

NASA Technical Reports Server (NTRS)

A chemical system is described for releasing a good yield of free barium neutral atoms and barium ions in the upper atmosphere and interplanetary space for the study of the geophysical properties of the medium. The barium is released in the vapor phase so that it can be ionized by solar radiation and also be excited to emit resonance radiation in the visible range. The ionized luminous cloud of barium becomes a visible indication of magnetic and electrical characteristics in space and allows determination of these properties over relatively large areas at a given time.

Lewis, B. W.; Stokes, C. S.; Smith, E. W.; Murphy, W. J. (inventors)

1973-01-01

47

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

48

Reimbursment for Outpatient Services  

Microsoft Academic Search

A survey of Registered Dietitians from 25 hospitals throughout southwestern Pennsylvania was conducted to determine the availability, and use of outpatient nutrition services, sources of referrals, concerns and needs of clients, success of reimbursements from third party payers, and the methods of submitting bills for reimbursements. Thirteen surveys (52%) were returned. One hundred percent of the respondents provide outpatient nutrition

K. A. Virostek; D. Porbin

1995-01-01

49

Barium Abundances in Cepheids  

E-print Network

We derived the barium atmospheric abundances for a large sample of Cepheids, comprising 270 stars. The sample covers a large range of galactocentric distances, from about 4 to 15 kpc, so that it is appropriated to investigate the existence of radial barium abundance gradients in the galactic disc. In fact, this is the first time that such a comprehensive analysis of the distribution of barium abundances in the galactic disc is carried out. As a result, we conclude that the Ba abundance distribution can be characterized by a zero gradient. This result is compared with derived gradients for other elements, and some reasons are briefly discussed for the independence of the barium abundances upon galactocentric distances.

Andrievsky, S M; Korotin, S A; Luck, R E; Kovtyukh, V V; Maciel, W J

2012-01-01

50

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. PMID:24759342

Zbar, Andrew P.

2014-01-01

51

Infection of Aedes albopictus with chikungunya virus rectally administered by enema.  

PubMed

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 10(6.95) tissue culture infective dose(50) (TCID(50))/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. PMID:23249139

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

2013-02-01

52

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. PMID:23249139

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

53

Relationship Between the pH of Enema Solutions and Intestinal Damage in Rabbits.  

PubMed

Mechanical enemas can lead to intestinal mucosal injuries and bowel barrier damage, presenting as electrolyte disturbances and functional intestinal disorders. Most researchers believe that the mechanism of injury is related to osmolality, volume and temperature of the solution, infusion pressure, and the composition of the enema tube. We hypothesized that the pH of the enema solution may also contribute to intestinal damage. We administered enema solutions-normal saline, soapsuds, or vinegar (neutral, alkaline, or acidic solutions, respectively)-to three groups of rabbits (n = 20 per group). The solutions were standardized for volume and temperature and the soapsuds and vinegar solutions were adjusted to be isotonic with normal saline or deionized water. We also included a control group (n = 20) in which the enema tubes were inserted but no solution was administered. We biopsied 3 sites (rectum and distal and proximal colon). Damage to intestinal mucosa was observed by light microscopy and transmission electron microscopy. In order to explore the detection of damage using noninvasive methods, cyclooxygenase (COX)-2 gene expression was measured in the exfoliated cells gathered from postenema defecation. Epithelial loss, inflammatory reaction, and cellular microstructure damage was increased in the vinegar and soapsuds groups. Also, exfoliated cells in these groups had higher COX-2 expression than the normal saline group. The acidic and alkaline enema solutions thus caused more severe damage to the intestinal mucosa compared to the neutral liquid, supporting our hypothesis. Further, the detection of COX-2 expression shows promise as a noninvasive method for estimating enema-induced damage. PMID:25504953

Zhang, Feng; Li, Xia; Xu, Xujuan; Cai, Duanying; Zhang, Jianguo

2015-01-01

54

A randomised trial comparing mesalazine and prednisolone foam enemas in patients with acute distal ulcerative colitis.  

PubMed Central

Distal ulcerative colitis can be treated with oral or rectal mesalazine, or both. A foam enema preparation has been developed and its efficacy investigated. The aim of this study was to evaluate the efficacy and safety of mesalazine foam enemas compared with prednisolone foam enemas in the treatment of patients with acute distal ulcerative colitis. Patients aged over 18 years presenting with a relapse of distal ulcerative colitis were randomly allocated treatment with mesalazine foam enema (n = 149 evaluable patients) and prednisolone foam enema (n = 146 evaluable patients) for four weeks. A randomised multicentre investigator blind parallel group trial was conducted. It was found that after four weeks of treatment, clinical remission was achieved by 52% of mesalazine treated patients and 31% of patients treated with prednisolone (p < 0.001). There was a trend in favour of more patients in the mesalazine group achieving sigmoidoscopic remission (40% v 31%, p = 0.10). Histological remission was achieved by 27% and 21% of patients receiving mesalazine and prednisolone respectively. Symptoms improved in both treatment groups. Significantly more mesalazine patients had no blood in their stools after four weeks of treatment (67% v 40%, p < 0.001). Prednisolone treated patients had significantly fewer days with liquid stools than mesalazine patients, with a median of 0 and 1 days respectively by week 4 (p = 0.001). In this study mesalazine foam enema was superior to prednisolone foam enema with regards to clinical remission, this was supported by favourable trends in sigmoidoscopic and histological remission rates. Both treatments were well tolerated. PMID:8801202

Lee, F I; Jewell, D P; Mani, V; Keighley, M R; Kingston, R D; Record, C O; Grace, R H; Daniels, S; Patterson, J; Smith, K

1996-01-01

55

Barium Ion Trapping Rebecca Schutzengel  

E-print Network

Barium Ion Trapping Rebecca Schutzengel Franklin W. Olin College of Engineering University of Washington INT REU August 20, 2012 Rebecca Schutzengel Barium Ion Trapping August 20, 2012 1 / 12 #12;Uses for Ion Trapping Bell's Inequality tests Quantum Computing Rebecca Schutzengel Barium Ion Trapping August

Washington at Seattle, University of - Department of Physics, Electroweak Interaction Research Group

56

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

57

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. PMID:23976976

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

2013-01-01

58

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

59

Esophagram (Barium Swallow Study)  

MedlinePLUS

... up. You will be given a gown to wear. The esophagram barium swallow uses x-rays and anyone who is pregnant cannot be in the room during the x-ray. During the Test Before the study you/your child will need ...

60

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

61

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

62

IN SITU MALONE ANTEGRADE CONTINENCE ENEMA IN 127 PATIENTS: A 6YEAR EXPERIENCE  

Microsoft Academic Search

Purpose:The initial description of the Malone antegrade continence enema (MACE) relied on a reversed, tunneled and reimplanted appendix. In 1999 we reported our in situ technique that uses windows developed in the appendiceal mesentery for imbrication. We present our long-term results.

C. D. ANTHONY HERNDON; RICHARD C. RINK; MARK P. CAIN; MICHELLE LERNER; MARTIN KAEFER; ELIZABETH YERKES; ANTHONY J. CASALE

2004-01-01

63

Perception errors with double-contrast enema after a positive guaiac test  

Microsoft Academic Search

Between 3 and 6 of 12 colorectal neoplasms larger than 1 cm in diameter were overlooked by each of 4 radiologists in 117 individuals investigated with double-contrast enema (DCE) after a positive guaiac test. Even when the individual results of 2, 3, or 4 experienced radiologists were combined, 2 small carcinomas were overlooked due to perception errors. One of these

Jan Kewenter; Jörn Jensen; Marianne Boijsen; Gerhard Lycke; Ulf Tylén

1987-01-01

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

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. PMID:24430662

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

2014-01-01

66

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

2014-05-01

67

Barium uranyl diphosphonates  

SciTech Connect

Three Ba{sup 2+}/UO{sub 2}{sup 2+} 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 Degree-Sign C. These compounds, Ba[UO{sub 2}[CH{sub 2}(PO{sub 3}){sub 2}]{center_dot}1.4H{sub 2}O (Ba-1), Ba{sub 3}[(UO{sub 2}){sub 4}(CH{sub 2}(PO{sub 3}){sub 2}){sub 2}F{sub 6}]{center_dot}6H{sub 2}O (Ba-2), and Ba{sub 2}[(UO{sub 2}){sub 2}(CH{sub 2}(PO{sub 3}){sub 2})F{sub 4}]{center_dot}5.75H{sub 2}O (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 UO{sub 5}F{sub 2} 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 [UO{sub 2}[CH{sub 2}(PO{sub 3}){sub 2}]{sup 2-} sheets. The interlayer space of the structures is occupied by Ba{sup 2+}, which, along with the fluoride ion, mediates the structure formed and maintains overall charge balance. - Graphical abstract: Illustration of the stacking of the layers in Ba{sub 3}[(UO{sub 2}){sub 4}(CH{sub 2}(PO{sub 3}){sub 2}){sub 2})F{sub 6}]{center_dot}6H{sub 2}O viewed along the c-axis. The structure is constructed from UO{sub 7} pentagonal bipyramidal units, U(1)O{sub 7}=gray, U(2)O{sub 7}=yellow, barium=blue, phosphorus=magenta, fluorine=green, oxygen=red, carbon=black, and hydrogen=light peach. Highlights: Black-Right-Pointing-Pointer The polymerization of the UO{sub 2}{sup 2+} sites to form uranyl dimers leads to structural variations in compounds. Black-Right-Pointing-Pointer Barium cations stitch uranyl diphosphonate anionic layers together, and help mediate structure formation. Black-Right-Pointing-Pointer HF acts as both a mineralizing agent and a ligand.

Nelson, Anna-Gay D., E-mail: nelsoa@umich.edu [Department of Civil Engineering and Geological Sciences and Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN 46556 (United States); Department of Earth and Environmental Sciences, University of Michigan, Ann Arbor, MI 48109-1005 (United States); Alekseev, Evgeny V. [Institute of Energy and Climate Research (IEK-6), Forschungszentrum Juelich Wilhelm-Johnen-Strasse, Juelich 52428 (Germany); Ewing, Rodney C. [Department of Earth and Environmental Sciences, University of Michigan, Ann Arbor, MI 48109-1005 (United States); Albrecht-Schmitt, Thomas E. [Department of Civil Engineering and Geological Sciences and Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, IN 46556 (United States)

2012-08-15

68

Outpatient Management of HIV Infection  

PubMed Central

The management of HIV and AIDS has changed dramatically over the past decade. Cases can now be managed adequately as outpatients and family physicians are assuming a greater role. Outpatient management involves regular follow up, including monitoring CD4 and CD8 levels, awareness and recognition of opportunistic infections, and early institution of zidovudine and primary preventive measures, including immunizations. PMID:21221348

Romanowski, Barbara

1992-01-01

69

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

70

Assessment of water enema computed tomography: an effective imaging technique for the diagnosis of colon cancer  

Microsoft Academic Search

Aim  The aim of this study was to assess the accuracy of water enema computed tomography (WECT) for the diagnosis of colon cancer.\\u000a \\u000a \\u000a \\u000a Methods  A total of 191 patients referred for clinically suspected colon cancer were prospectively evaluated by WECT in a multicenter\\u000a trial. Examination was contrast enhanced helical CT after colon filling through a rectal tube. For all the cases, final

Catherine Ridereau-Zins; Christophe Aubé; Dominique Luet; Bruno Vielle; Franck Pilleul; Jérôme Dumortier; Yves Gandon; Denis Heresbach; Christophe Beziat; François Bailly; Marjolaine DeBilly; Franck Carbonnel; Marie Ange Pierredon-Foulongne; Mickaël Bismuth; Jean-Marie Chretien; Jérôme Lebigot; Patrick Pessaux; Pierre-Jean Valette

2010-01-01

71

Comparison of results of laparoscopic and open antegrade continence enema procedures  

Microsoft Academic Search

Several modifications of the Malone antegrade continence enema (ACE) procedure have now been reported. In this study we have\\u000a compared the results of our experience with the laparoscopic appendicostomy (LACE procedure) with the published results of\\u000a previously described open ACE procedures. Children who had the LACE procedure at our institutions were reviewed. Intra- and\\u000a postoperative problems were identified by review

A. C. Lynch; S. W. Beasley; R. W. Robertson; P. N. Morreau

1999-01-01

72

Discovery of the Barium Isotopes  

E-print Network

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

A. Shore; A. Fritsch; J. Q. Ginepro; M. Heim; A. Schuh; M. Thoennessen

2009-08-13

73

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

74

Monitoring Outpatient Care  

NASA Technical Reports Server (NTRS)

Each year, health care costs for managing chronically ill patients increase as the life expectancy of Americans continues to grow. To handle this situation, many hospitals, doctors practices, and home care providers are turning to disease management, a system of coordinated health care interventions and communications, to improve outpatient care. By participating in daily monitoring programs, patients with congestive heart failure, chronic obstructive pulmonary disease, diabetes, and other chronic conditions requiring significant self-care are facing fewer emergency situations and hospitalizations. Cybernet Medical, a division of Ann Arbor, Michigan-based Cybernet Systems Corporation, is using the latest communications technology to augment the ways health care professionals monitor and assess patients with chronic diseases, while at the same time simplifying the patients interaction with technology. Cybernet s newest commercial product for this purpose evolved from research funded by NASA, the National Institute of Mental Health, and the Advanced Research Projects Agency. The research focused on the physiological assessment of astronauts and soldiers, human performance evaluation, and human-computer interaction. Cybernet Medical's MedStar Disease Management Data Collection System is an affordable, widely deployable solution for improving in-home-patient chronic disease management. The system's battery-powered and portable interface device collects physiological data from off-the-shelf instruments.

2003-01-01

75

Barium light source method and apparatus  

NASA Technical Reports Server (NTRS)

Visible light emission is obtained from a plasma containing elemental barium including neutral barium atoms and barium ion species. Neutral barium provides a strong green light emission in the center of the visible spectrum with a highly efficient conversion of electrical energy into visible light. By the selective excitation of barium ionic species, emission of visible light at longer and shorter wavelengths can be obtained simultaneously with the green emission from neutral barium, effectively providing light that is visually perceived as white. A discharge vessel contains the elemental barium and a buffer gas fill therein, and a discharge inducer is utilized to induce a desired discharge temperature and barium vapor pressure therein to produce from the barium vapor a visible light emission. The discharge can be induced utilizing a glow discharge between electrodes in the discharge vessel as well as by inductively or capacitively coupling RF energy into the plasma within the discharge vessel.

Curry, John J. (Inventor); MacDonagh-Dumler, Jeffrey (Inventor); Anderson, Heidi M. (Inventor); Lawler, James E. (Inventor)

2002-01-01

76

Abundance analysis of barium and mild barium stars  

E-print Network

High signal to noise, high resolution spectra were obtained for a sample of normal, mild barium, and barium giants. Atmospheric parameters were determined from the FeI and FeII lines. Abundances for Na, Mg, Al, Si, Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Sr, Y, Zr, Ba, La, Ce, Nd, Sm, Eu, and Gd, were determined from equivalent widths and model atmospheres in a differential analysis, with the red giant Eps Vir as the standard star. The different levels of s-process overabundances of barium and mild barium stars were earlier suggested to be related to the stellar metallicity. Contrary to this suggestion, we found in this work no evidence of barium and mild barium to having different range in metallicity. However, comparing the ratio of abundances of heavy to light s-process elements, we found some evidence that they do not share the same neutron exposure parameter. The exact mechanism controlling this difference is still not clear. As a by-product of this analysis we identify two normal red giants misclassified as mild barium stars. The relevance of this finding is discussed. Concerning the suggested nucleosynthetic effects possibly related to the s-process, for elements like Cu, Mn, V and Sc, we found no evidence for an anomalous behavior in any of the s-process enriched stars analyzed here. However, further work is still needed since a clear [Cu/Fe] vs. [Ba/H] anticorrelation exists for other s-process enriched objects.

R. Smiljanic; G. F. Porto de Mello; L. da Silva

2007-04-02

77

Barium and CH Stars The classical barium (or ``Ba II'') stars are red  

E-print Network

Barium and CH Stars The classical barium (or ``Ba II'') stars are red giants whose spectra show strong absorption lines of barium, strontium, and certain other heavy elements, as well as strong transfer in binary sys­ tems that drastically alters the surface compo­ sition of a companion star. Barium

Bond, Howard E.

78

Barium Ions for Quantum Computation Matthew Dietrich  

E-print Network

Barium Ions for Quantum Computation Matthew Dietrich A dissertation submitted in partial of the manuscript made from microform." Signature Date #12;#12;University of Washington Abstract Barium Ions Department of Physics Barium ion is investigated as a hyperfine qubit. 137Ba+ is trapped in a linear Paul

Blinov, Boris

79

Quantum manipulation on the Barium quadrupolar transition  

E-print Network

Quantum manipulation on the Barium quadrupolar transition A diploma thesis in physics submitted and stabilization of a new fiber laser system to ma- nipulate the Barium quadrupolar transition, with the aim with a single Barium ion trapped in a linear Paul trap and Doppler cooled to the Lamb Dicke regime. The narrow

Blatt, Rainer

80

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

81

Forensic application of ESEM and XRF-EDS techniques to a fatal case of sodium phosphate enema intoxication  

Microsoft Academic Search

Sodium phosphate enemas and laxatives are widely used for the treatment of constipation, even if a number of cases of significant toxicity due to alterations of the fluid and electrolyte equilibria (hypernatremia, hyperphosphatemia, and hypocalcemia) have been reported. We present the case of an 83-year-old man who died of fecal and chemical peritonitis secondary to an iatrogenic colon perforation (produced

G.a Viel; G. a Cecchetto; L. D. a Fabbri; C. b Furlan; S. D. a Ferrara; M. a Montisci

2009-01-01

82

40 CFR 721.10011 - Barium calcium manganese strontium oxide.  

Code of Federal Regulations, 2011 CFR

...2011-07-01 2011-07-01 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...

2011-07-01

83

40 CFR 721.10011 - Barium calcium manganese strontium oxide.  

Code of Federal Regulations, 2010 CFR

...2010-07-01 2010-07-01 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...

2010-07-01

84

40 CFR 721.10011 - Barium calcium manganese strontium oxide.  

Code of Federal Regulations, 2012 CFR

...2012-07-01 2012-07-01 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...

2012-07-01

85

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

86

40 CFR 721.10011 - Barium calcium manganese strontium oxide.  

...2014-07-01 2014-07-01 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...

2014-07-01

87

The problem of the barium stars  

NASA Technical Reports Server (NTRS)

Ultraviolet observations of barium stars and other cool stars with peculiar element abundances are reported. Those observations attempted to find hot white dwarf companions. Among six real barium stars studied, only Zeta Cap was found to have a white dwarf companion. Among seven mild, or marginal, barium stars studied, at least three were found to have hot subluminous companions. It is likely that all of them have white dwarf companions.

Bohm-Vitense, E.; Nemec, J.; Proffitt, C.

1984-01-01

88

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

89

Intussusception  

MedlinePLUS

... kinds of enemas (an air enema or a barium enema ) often can diagnose and treat intussusception at ... been turned inside out and cures the blockage. Barium, a liquid mixture, is sometimes used in place ...

90

[Analgesia in pediatric outpatient surgery].  

PubMed

A number of surgical procedures for pediatric patients can be suitably performed in an outpatient setting. The advantages are impressive: reduced costs, lower rate of infection, avoidance of hospitalization with the inherent psychological stress, and timely return of the patients to their familiar home environment. An essential feature of the quality of outpatient surgery is the efficacy of the perioperative pain therapy for which a multimodal approach has proven to be very effective: workflow tailored to children's needs, ambiance appropriate for children, and pharmacological analgesia. In the preliminary counseling session it is imperative that parents and children receive detailed information on procedures (role playing, modeling). Associated unpleasant factors prior to induction of anesthesia should be avoided. The primary element of pharmacological analgesia is regional anesthesia; additional options are paracetamol, nonsteroidal antirheumatic agents (be aware of the highest dosages!), and opioids. When opioids are employed, care should be taken that monitoring standards in the recovery room are not lowered and include pulsoxymetry. Because of the clearly elevated rate of postoperative nausea and vomiting related to perioperative administration of opioids, the lower dosage level should be chosen. This article presents concepts of perioperative analgesia. PMID:16421706

Mehler, J

2006-02-01

91

Communications to the Editor Synthesis of Monodisperse Nanoparticles of Barium  

E-print Network

Communications to the Editor Synthesis of Monodisperse Nanoparticles of Barium Titanate: Toward of barium titanate, BaTiO3, with diameters ranging from 6 to 12 nm. Barium titanate is a room,10 In the synthesis developed here, barium titanium ethyl hexano-isopropoxide (A

92

42 CFR 410.155 - Outpatient mental health treatment limitation.  

Code of Federal Regulations, 2012 CFR

...2012-10-01 false Outpatient mental health treatment limitation. 410...Benefits § 410.155 Outpatient mental health treatment limitation. (a...liability amounts for outpatient mental health services subject to the...

2012-10-01

93

42 CFR 410.155 - Outpatient mental health treatment limitation.  

Code of Federal Regulations, 2011 CFR

...2011-10-01 false Outpatient mental health treatment limitation. 410...Benefits § 410.155 Outpatient mental health treatment limitation. (a...liability amounts for outpatient mental health services subject to the...

2011-10-01

94

42 CFR 410.155 - Outpatient mental health treatment limitation.  

Code of Federal Regulations, 2013 CFR

...2013-10-01 false Outpatient mental health treatment limitation. 410...Benefits § 410.155 Outpatient mental health treatment limitation. (a...liability amounts for outpatient mental health services subject to the...

2013-10-01

95

38 CFR 17.92 - Outpatient care for research purposes.  

Code of Federal Regulations, 2011 CFR

...false Outpatient care for research purposes. 17.92 Section...DEPARTMENT OF VETERANS AFFAIRS MEDICAL Outpatient Treatment § 17.92 Outpatient care for research purposes. Subject to...Department of Veterans Affairs research project and there are...

2011-07-01

96

38 CFR 17.92 - Outpatient care for research purposes.  

Code of Federal Regulations, 2012 CFR

...false Outpatient care for research purposes. 17.92 Section...DEPARTMENT OF VETERANS AFFAIRS MEDICAL Outpatient Treatment § 17.92 Outpatient care for research purposes. Subject to...Department of Veterans Affairs research project and there are...

2012-07-01

97

38 CFR 17.92 - Outpatient care for research purposes.  

...false Outpatient care for research purposes. 17.92 Section...DEPARTMENT OF VETERANS AFFAIRS MEDICAL Outpatient Treatment § 17.92 Outpatient care for research purposes. Subject to...Department of Veterans Affairs research project and there are...

2014-07-01

98

38 CFR 17.92 - Outpatient care for research purposes.  

Code of Federal Regulations, 2013 CFR

...false Outpatient care for research purposes. 17.92 Section...DEPARTMENT OF VETERANS AFFAIRS MEDICAL Outpatient Treatment § 17.92 Outpatient care for research purposes. Subject to...Department of Veterans Affairs research project and there are...

2013-07-01

99

38 CFR 17.92 - Outpatient care for research purposes.  

Code of Federal Regulations, 2010 CFR

...false Outpatient care for research purposes. 17.92 Section...DEPARTMENT OF VETERANS AFFAIRS MEDICAL Outpatient Treatment § 17.92 Outpatient care for research purposes. Subject to...Department of Veterans Affairs research project and there are...

2010-07-01

100

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. PMID:22791955

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

2012-01-01

101

Paracellular phosphate absorption in rat colon: a mechanism for enema-induced hyperphosphatemia.  

PubMed

The mechanism of colonic phosphate absorption is not well defined. We measured unidirectional phosphate fluxes across rat distal colon epithelium in the absence of transepithelial electrochemical gradients. Steady-state mucosal-to-serosal flux (Jms) was not different from the serosal-to-mucosal flux (Jsm), generating no net flux (Jnet = Jms - Jsm, was not different from "0'). Simultaneous fluxes of mannitol, a paracellular probe, exhibited an identical flux pattern, suggesting that phosphate flux across the colonic epithelium may be mediated through the paracellular pathway. Tight junction permeability was increased with mucosal addition of taurodeoxycholate (TDC, 2 mM) which caused a prompt increase in transepithelial conductance from 7.03 +/- 0.35 to 13.88 +/- 0.35 mS/cm2 (p < 0.001). This was associated with an increase in Jsm, but no change in Jms, for mannitol, resulting in a net flux in the secretary direction. Identical TDC-induced changes were observed in phosphate fluxes, again suggesting phosphate permeation through the intercellular, mannitol pathway. A significant correlation was observed between the permeability of phosphate and the permeability of mannitol, measured both in the mucosal-to-serosal and the serosal-to-mucosal directions and under both control and experimental (mucosal TDC) conditions. Thus, colonic phosphate transport is mediated through the paracellular pathway and enema with high phosphate concentrations (1,760 times blood concentration), can trigger rapid and massive phosphate absorption through this diffusive pathway. PMID:9058363

Hu, M S; Kayne, L H; Jamgotchian, N; Ward, H J; Lee, D B

1997-01-01

102

Outpatient treatment of adult asthma.  

PubMed Central

As a chronic disease with intermittent exacerbations, asthma is treated primarily in the outpatient setting by primary care physicians. Asthma is the result of complex and only partially understood interactions of respiratory, inflammatory, and neural cells and their mediators. The goals of asthma therapy are to prevent and relieve symptoms, allow normal activities of daily living, restore and maintain normal pulmonary function, avoid adverse effects from interventions, and minimize inconvenience and cost. These goals can be achieved through educating patients, assessing and monitoring asthma severity, avoiding or controlling asthma triggers, establishing an intervention plan for routine self-management and the management of exacerbations, and providing regular follow-up care. We present a stepped approach to asthma pharmacotherapy, emphasizing anti-inflammatory therapy--inhaled corticosteroids, cromolyn sodium, or nedocromil sodium--as a summary of recent national and international recommendations. PMID:7667983

Kleerup, E C; Tashkin, D P

1995-01-01

103

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

104

Magnetic and dielectric properties of barium titanate-coated barium ferrite  

Microsoft Academic Search

Flaky barium ferrite with hexagonal molecular structure was successfully prepared by reverse microemulsion method, and was coated with barium titanate through a coordination–precipitation technique. The prepared composite particles were characterized with X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDAX), vibrating sample magnetometry (VSM) and vector network analyzer. Barium ferrite nanoparticles are proved to be single magnetic

Chao Wang; Xijiang Han; Ping Xu; Xiaohong Wang; Xueai Li; Hongtao Zhao

2009-01-01

105

Barium Sulfate Scale Formation in Oil Reservoir During Water Injection at High-Barium Formation Water  

NASA Astrophysics Data System (ADS)

This study presents the results of laboratory experiments carried out to investigate the formation of barium sulfate in sandstone cores from mixing injected sea water and formation water contain high concentration of barium at various temperatures (50 and 80°C) and differential pressures (100, 150 and 200 psig). The morphology of scaling crystals as shown by Scanning Electron Microscopy (SEM) is presented. Results show a large extent of permeability damage caused by barium sulfate deposits on the rock pore surface. The rock permeability decline indicates the influence of the concentration of barium ions.

Merdhah, Amer Badr Bin; Mohd Yassin, Abu Azam

106

Abundance Analysis of Barium Stars  

E-print Network

We obtain the chemical abundances of six barium stars and two CH subgiant stars based on the high signal-to-noise ratio and high resolution Echelle spectra. The neutron capture process elements Y, Zr, Ba, La, Eu show obvious overabundance relative to the Sun, for example, their [Ba/Fe] values are from 0.45 to 1.27. Other elements, including Na, Mg, Al, Si, Ca, Sc, Ti, V, Cr, Mn, Ni, show comparable abundances to the Solar ones, and their [Fe/H] cover a range from $-$0.40 to 0.21, which means they belong to Galactic disk. The predicts of the theoretical model of wind accretion for binary systems can explain the observed abundance patterns of the neutron capture process elements in these stars, which means that their overabundant heavy-elements could be caused by accreting the ejecta of AGB stars, the progenitors of the present white dwarf companions in the binary systems.

G. Q. Liu; Y. C. Liang; L. Deng

2008-11-13

107

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

108

Dielectric and Piezoelectric Properties of Barium Titanate  

Microsoft Academic Search

The dielectric constant and loss of barium titanate and barium-strontium titanate have been measured at biasing field strengths from 0 to 5 megavolts per meter, at temperatures from -50°C to +135°C and at frequencies from 0.1 to 25 megacycles. The measurements versus temperature indicate the expected agreement with the Curie-Weiss law at temperatures above the Curie point. Measurements versus field

Shepard Roberts

1947-01-01

109

Fabrication of Barium Ferrite Thick Films  

Microsoft Academic Search

During recent years the need for high quality self-biased barium ferrite (BaFe12O19) thick films had been increasing due to its chemical stability, anisotropy and oriented hexagonal M-type ferrites. Our goal is to fabricate barium ferrite thick films to be incorporated in self-biased microwave devises. Different methods such as sputtering, pulse laser deposition, CVD and modified liquid phase deposition have been

Wei Jiang Yeh; Carla Blengeri-Oyarce; Sundeep Pillamari; Jnana Manoj Appikonda; Laura Diaz; Yanko Kranov; David McIlroy

2008-01-01

110

Barium hexaferrite synthesis by oxalate precursor route  

Microsoft Academic Search

Magnetic materials are important electronic materials that have a wide range of industrial and commercial applications. Barium hexaferrite (BaFe12O19), is of great importance as permanent magnets, particularly for magnetic recording as well as in microwave devices. An aim of this study was to synthesize stoichiometric and single phase barium hexaferrite by a technique of oxalate precursor. Effect of different annealing

Q. Mohsen

2010-01-01

111

Sulphate removal from sodium sulphate-rich brine and recovery of barium as a barium salt mixture.  

PubMed

Sulphate removal from sodium sulphate-rich brine using barium hydroxide and recovery of the barium salts has been investigated. The sodium sulphate-rich brine treated with different dosages of barium hydroxide to precipitate barium sulphate showed sulphate removal from 13.5 g/L to less than 400 mg/L over 60 min using a barium to sulphate molar ratio of 1.1. The thermal conversion of precipitated barium sulphate to barium sulphide achieved a conversion yield of 85% using coal as both a reducing agent and an energy source. The recovery of a pure mixture of barium salts from barium sulphide, which involved dissolution of barium sulphide and reaction with ammonium hydroxide resulted in recovery of a mixture of barium carbonate (62%) and barium hydroxide (38%), which is a critical input raw material for barium salts based acid mine drainage (AMD) desalination technologies. Under alkaline conditions of this barium salt mixture recovery process, ammonia gas is given off, while hydrogen sulfide is retained in solution as bisulfide species, and this provides basis for ammonium hydroxide separation and recovery for reuse, with hydrogen sulfide also recoverable for further industrial applications such as sulfur production by subsequent stripping. PMID:23485244

Vadapalli, Viswanath R K; Zvimba, John N; Mulopo, Jean; Motaung, Solly

2013-01-01

112

Medical Referrals for Hypnotherapy: Opinions of Physicians, Residents, Family Practice Outpatients, and Psychiatry Outpatients  

Microsoft Academic Search

Previous studies surveying attitudes and education regarding the clinical use of hypnosis have been conducted with patient populations only. The current study was undertaken to assess the attitudes, experiences, training levels, and interest in future education regarding the use of hypnosis by staff physicians, medical resident physicians, family practice outpatients, and psychiatry outpatients. All subjects were drawn from a 400-physician

Gary R. Elkins; Valerie J. Wall

1996-01-01

113

Temperature-dependent coherent oscillation in photorefractive relaxor strontium barium  

E-print Network

Temperature-dependent coherent oscillation in photorefractive relaxor strontium barium niobate M of the photorefractive light-induced scattering (beam fanning) in Sr0.61Ba0.39Nb2O6 (strontium barium niobate) doped

Osnabrück, Universität

114

Two barium stars in the Galactic bulge  

E-print Network

Barium stars conserve important information on the s-process and the third dredge-up in intermediate mass stars. Their discovery in various environments is therefore of great help to test nucleosynthesis and mixing models. Our aim is to analyse two stars with a very strong barium line detected in a large survey of red giants in the Galactic bulge. Abundance analysis was done comparing synthetic model spectra based on the COMARCS code with our medium resolution spectra. Abundances of Ba, La, Y, and Fe were determined. Beside the two main targets, the analysis was also applied to two comparison stars. We confirm that both stars are barium stars. They are the first ones of this kind identified in the Galactic bulge. Their barium excesses are among the largest values found up to now. The elemental abundances are compared with current nucleosynthesis and mixing models. Furthermore, we estimate a frequency of barium stars in the Galactic bulge of about 1%, which is identical to the value for disc stars.

Lebzelter, Thomas; Straniero, Oscar; Aringer, Bernhard

2013-01-01

115

Two barium stars in the Galactic bulge  

NASA Astrophysics Data System (ADS)

Context. Barium stars conserve important information on the s-process and the third dredge-up in intermediate mass stars. Their discovery in various environments is therefore of great help in testing nucleosynthesis and mixing models. Aims: Our aim is to analyse two stars with a very strong barium line detected in a large survey of red giants in the Galactic bulge. Methods: Abundance analysis was done comparing synthetic model spectra based on the COMARCS code with our medium resolution spectra. Abundances of Ba, La, Y, and Fe were determined. Beside the two main targets, the analysis was also applied to two comparison stars. Results: We confirm that both stars are barium stars. They are the first ones of this kind identified in the Galactic bulge. Their barium excesses are among the largest values found up to now. The elemental abundances are compared with current nucleosynthesis and mixing models. Furthermore, we estimate a frequency of barium stars in the Galactic bulge of about 1%, which is identical to the value for disc stars. Based on observations at the Very Large Telescope of the European Southern Observatory, Cerro Paranal/Chile, under Programme 083.D-0046(A).

Lebzelter, T.; Uttenthaler, S.; Straniero, O.; Aringer, B.

2013-06-01

116

Outpatient commitment: what, why, and for whom.  

PubMed

The authors describe studies showing the effectiveness of involuntary outpatient commitment in improving treatment compliance, reducing hospital readmission, and reducing episodes of violence among persons with severe psychiatric illnesses. They point out that because of its role in enhancing compliance with treatment, outpatient commitment can be regarded as a form of assisted treatment, such as assertive case management, representative payeeship, and mental health courts. The authors argue that such assisted treatment is necessary for persons with severe psychiatric illnesses who are noncompliant with their medication regimens because many lack awareness of their illnesses because of biologically based cognitive deficits. They recommend outpatient commitment for any individual with a severe psychiatric disorder who has impaired awareness of his or her illness and is at risk of becoming homeless, incarcerated, or violent or of committing suicide, and they provide case examples. The authors conclude by addressing eight of the most common objections to outpatient commitment by mental health professionals and civil liberties groups that oppose outpatient commitment. PMID:11239101

Torrey, E F; Zdanowicz, M

2001-03-01

117

Ferroelectric Properties of Individual Barium Titanate Nanowires Investigated  

E-print Network

Ferroelectric Properties of Individual Barium Titanate Nanowires Investigated by Scanned Probe on the ferroelectric properties of individual single-crystalline barium titanate nanowires. We show that nonvolatile report the scanned probe characterization of individual single-crystalline barium titanate (BaTiO3) nano

Heller, Eric

118

Magnetoresistive Conductive Polyaniline-Barium Titanate Nanocomposites with Negative Permittivity  

E-print Network

Magnetoresistive Conductive Polyaniline-Barium Titanate Nanocomposites with Negative Permittivity Carolina 28301, United States ABSTRACT: Polyaniline (PANI) polymer nanocomposites (PNCs) filled with barium field sensors,10 energy electrodes11 and biosensors.12,13 Barium titanate (BaTiO3) as transition metal

Guo, John Zhanhu

119

PHOTOSENSITIVE CENTERS AND CHARGE TRANSFER PROCESSES IN BARIUM CALCIUM TITANATE  

E-print Network

PHOTOSENSITIVE CENTERS AND CHARGE TRANSFER PROCESSES IN BARIUM CALCIUM TITANATE G.MALOVICHKO, V@uos.de; vgrachev@uos.de; schirmer@uos.de Abstract The results of the study of charge transfer processes in barium of crystals from barium titanate (BT) family make them promising candidates for various applications

Malovichko, Galina

120

Experiments with remote entanglement using single barium ions Nathan Kurz  

E-print Network

Experiments with remote entanglement using single barium ions Nathan Kurz A dissertation submitted entanglement using single barium ions Nathan Kurz Chair of the Supervisory Committee: Dr. Boris B. Blinov Physics Department Barium ion qubits are trapped and Doppler cooled in a linear Paul trap and the tasks

Blinov, Boris

121

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

122

Outpatient tubeless percutaneous nephrolithotomy and concomitant cystolitholapaxy  

PubMed Central

Percutaneous nephrolithotomy (PCNL) is a widely employed endourologic procedure to remove renal stones. Traditionally, PCNL has been performed on an inpatient basis, with patients routinely hospitalized postoperatively. Given the ongoing rising healthcare costs, a shift toward outpatient surgery is desirable. We report the case of a 21-year-old female who was safely discharged a few hours following uncomplicated tubeless PCNL and concomitant cystolitholapaxy for a stent with encrustation on its distal coil. To the best of our knowledge, this is the first published case of tubeless PCNL with concomitant cystolitholapaxy performed on an entirely outpatient basis. PMID:24678360

Lehmann, Kyle J.; Beiko, Darren

2014-01-01

123

Barium Titanate and Bismuth Oxide Nanocomposites Barium titanate, BaTiO3, and bismuth oxide Bi2O3 are transparent materials with  

E-print Network

Barium Titanate and Bismuth Oxide Nanocomposites Barium titanate, BaTiO3, and bismuth oxide Bi2O3 Wall in Tetragonal Barium Titanate", H. Chaib, F. Schlaphof, T. Otto and L. M. Eng, Journal of Physics

Harmon, Julie P.

124

42 CFR 410.155 - Outpatient mental health treatment limitation.  

... 2014-10-01 false Outpatient mental health treatment limitation. 410...SMI Benefits § 410.155 Outpatient mental health treatment limitation. (a...in connection with the treatment of a mental, psychoneurotic, or personality...

2014-10-01

125

Analysis of 26 Barium Stars I. Abundances  

E-print Network

We present a detailed analysis of 26 barium stars, including dwarf barium stars, providing their atmospheric parameters (Teff, log g, [Fe/H], vt) and elemental abundances. We aim at deriving gravities and luminosity classes of the sample stars, in particular to confirm the existence of dwarf barium stars. Accurate abundances of chemical elements were derived. Abundance ratios between nucleosynthetic processes, by using Eu and Ba as representatives of the r- and s-processes are presented. High-resolution spectra with the FEROS spectrograph at the ESO-1.5m Telescope, and photometric data with Fotrap at the Zeiss telescope at the LNA were obtained. The atmospheric parameters were derived in an iterative way, with temperatures obtained from colour-temperature calibrations. The abundances were derived using spectrum synthesis for Li, Na, Al, alpha-, iron peak, s- and r-elements atomic lines, and C and N molecular lines. Atmospheric parameters in the range 4300 barium stars, were derived and showed that [X/Ba] vs. [Ba/H] and [X/Ba] vs. [Fe/H] present different behaviour as compared to [X/Eu] vs. [Eu/H] and [X/Eu] vs. [Fe/H], reflecting the different nucleosynthetic sites for the s- and r-processes.

Dinah M. Allen; Beatriz Barbuy

2006-04-03

126

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

127

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

128

Outpatient thoracoscopic limited sympathectomy for hyperhidrosis palmaris  

Microsoft Academic Search

Thoracoscopic sympathectomy is considered the most effective treatment for hyperhidrosis palmaris. We have treated 1,043 cases of this disease by this method. We have developed an outpatient technique of thoracoscopic sympathectomy using electrocautery. This procedure has been used in 47 patients with hyperhidrosis palmaris. The early results have been favorable. We describe this fast, safe, economic, and effective method for

Jiun-Yi Hsia; Chih-Yi Chen; Chung-Ping Hsu; Sen-Ei Shai; Shyh-Sheng Yang

1999-01-01

129

Outpatient coronary angioplasty: feasible and safe.  

PubMed

This study tested the safety and feasibility of coronary angioplasty on an outpatient basis. The purpose of this approach includes cost-effectiveness and patient comfort. Six hundred forty-four patients were randomized to either transradial or transfemoral PTCA using 6 Fr equipment. Patients were triaged to outpatient management based on a predefined set of predictors of an adverse outcome in the first 24 hr after initially successful coronary angioplasty. Three hundred seventy-five patients (58%) were discharged 4-6 hr after PTCA; 42% stayed in hospital overnight. In the outpatient group, one adverse event occurred (subacute stent thrombosis 7 hr postdischarge, nonfatal myocardial infarction). There were no major vascular complications. In the hospital group, 19 patients (7%) sustained an adverse cardiac even in the first 24 hr; 1 patient died. Patients treated via the femoral route had more (minor) bleeding complications (19 patients; 6%); in 17 of these, this was the sole reason that discharge was delayed. PTCA on an outpatient basis, performed via the radial or the femoral artery with low-profile equipment, is safe and feasible in a considerable part of a routine PTCA population. A larger proportion of transradial patients can be discharged due to a reduction in (minor) bleeding complications. PMID:15789393

Slagboom, Ton; Kiemeneij, Ferdinand; Laarman, Gert Jan; van der Wieken, Ron

2005-04-01

130

42 CFR 419.21 - Hospital outpatient services subject to the outpatient prospective payment system.  

Code of Federal Regulations, 2010 CFR

...CENTERS FOR MEDICARE & MEDICAID SERVICES, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED...PROGRAM PROSPECTIVE PAYMENT SYSTEM FOR HOSPITAL OUTPATIENT DEPARTMENT SERVICES Categories of Hospitals and Services Subject to and Excluded...

2010-10-01

131

Trapped Barium Ions for Quantum ComputationTrapped Barium Ions for Quantum Computation V.Mirgon, G.Shu, A.Avril, M.Dietrich N.Kurz, E. Shahar, and B.B.Blinov  

E-print Network

Trapped Barium Ions for Quantum ComputationTrapped Barium Ions for Quantum Computation V.Mirgon, G of Washington Seattle WA 98195 Trapped Barium Ions for Quantum ComputationTrapped Barium Ions for Quantum

Blinov, Boris

132

A Spectroscopic Analysis of Barium Stars  

NASA Astrophysics Data System (ADS)

Detailed abundance analyses have been carried out for 31 barium and normal G-K giant stars using high-dispersion spectra and model atmospheres. A significant enhancement of s-process elements is found for seventeen stars. The abundances of light and iron-peak elements are in general equal to those in the standard star ? Vir. However, Na, Mg, Mn, and Co are systematically slightly deficient (about 0.2 dex). The elements heavier than Ni are enhanced by up to about 1.5 dex compared with the standards, while the r-process element Eu abundance is roughly normal. We cannot find substantial differences in abundances, atmospheric parameters, and luminosities of radial- velocity variable and nonvariable barium stars. Therefore it seems that both groups of stars belong to a single family of peculiar giants. Comparison between the mean observed s-process abundances for our uniform barium star sample, and theoretical predictions from various neutron exposure models, show that 13C neutron source AGB star (with the mean neutron exposure ?0 > 0.4mb-1 can best reproduce the abundance data of these stars. Low neutron density single neutron exposures of approx. 1.1mb-1 also are shown to result in good agreement with the barium star observations. Mass transfer scenarios are tested using the chemical composition and orbital parameter data of Ba II stars. Since a correlation exists between s-process abundance anomalies and orbital periods (projections of the semi-major axis, mass functions) for barium star binaries, we conclude that a wind accretion scenario is more promising than Roche-lobe overflow ones. Abundance patterns for barium and carbon stars have been compared. We find good agreement for the iron group metals, but carbon stars show higher s-process element overabundances (0.9 dex in the mean). Therefore, the companions to the Ba II stars were perhaps once carbon stars, who overflowed mass onto the presently visible star with a second dilution (the ratio of the transferred mass to the mass of the receiving envelope) of roughly 0.9.

Zacs, L.

1994-03-01

133

Primary epiploic appendagitis and successful outpatient management  

PubMed Central

Summary Background Primary epiploic appendagitis (PEA) is a rare cause of abdominal acute or subacute complaints. Diagnosis of PEA is made with ultrasonography (US) or when computed tomography (CT) reveals a characteristic lesion. Case Report We report on two patients with PEA. In one patient PEA was first seen with US and confirmed with contrast enhanced CT, and in the second patient CT without contrast enhancement demonstrated PEA. In both patients an outpatient recovery with conservative non-surgical treatment is described. Conclusions Medical personnel should be aware of this rare disease, which mimics many other intra-abdominal acute and subacute conditions. A correct diagnosis of PEA with imaging procedures enables conservative and successful outpatient management avoiding unnecessary surgical intervention and additional costs. PMID:22648258

Schnedl, Wolfgang J.; Krause, Robert; Wallner-Liebmann, Sandra J.; Tafeit, Erwin; Mangge, Harald; Tillich, Manfred

2012-01-01

134

Ultrafast laser inscription of bistable and reversible waveguides in strontium barium niobate crystals  

E-print Network

Ultrafast laser inscription of bistable and reversible waveguides in strontium barium niobate optical channel waveguides in strontium barium niobate nonlinear ferroelectric crystals by direct barium niobate SBN crystal because of its prime importance in modern photonics due to its nonlinear

135

Enhanced dielectric properties from barium strontium titanate films with strontium titanate buffer layers  

E-print Network

Enhanced dielectric properties from barium strontium titanate films with strontium titanate buffer in their PE state. One of the leading material candidates for tunable materials is barium strontium titanate- tive amounts of Ba and Sr. TC for pure barium t

Alpay, S. Pamir

136

Dielectric properties of MgO-doped compositionally graded multilayer barium strontium titanate films  

E-print Network

Dielectric properties of MgO-doped compositionally graded multilayer barium strontium titanate shifters and filters operat- ing in the microwave regime.1­4 Ferroelectrics FEs such as barium strontium. Required amounts of barium

Alpay, S. Pamir

137

Engineering domain configurations for enhanced piezoelectricity in barium titanate single crystals  

E-print Network

Engineering domain configurations for enhanced piezoelectricity in barium titanate single crystals piezoelectric responses of barium titanate single crystals under different crystallographic orientations, and use it to explain the ultrahigh piezoelectric response recently observed in a 270 cut barium titanate

Li, Jiangyu

138

Outpatient care of the interventional radiology patient.  

PubMed

The current trend among interventional radiologists is to be actively involved in the pre- and post-procedure care that surrounds many of our procedures. For this to occur, defined office space that is set up in such a way that is conducive to outpatient consultation and post-procedure visits is required. In addition, appropriate support staff such as midlevel providers (including nurse practitioners and physician assistants) and a receptionist are needed to make the entire system work. Finally, dedicated time to focus on direct patient care is mandatory. Equally important is understanding the processes that occur in the background of a typical procedural encounter, including generating referrals, obtaining insurance pre-authorization, managing medical records, and communicating with referring physicians, all of which are expected to take place when managing patients in an outpatient setting. When these components are in place, it becomes possible for an interventionalist to successfully develop an outpatient office and to meet the expectation that patients will be seen before and after procedures by the practitioner performing that procedure. PMID:21326785

Siskin, Gary

2006-12-01

139

Actigraphy pattern analysis for outpatient monitoring.  

PubMed

The actigraphy is a cost-effective method for assessing specific sleep disorders such as diagnosing insomnia, circadian rhythm disorders, or excessive sleepiness. Due to recent advances in wireless connectivity and motion activity sensors, the new actigraphy devices allow the non-intrusive and non-stigmatizing monitoring of outpatients for weeks or even months facilitating treatment outcome measure in daily life activities. This possibility has propitiated new studies suggesting the utility of actigraphy to monitor outpatients with mood disorders such as major depression, or patients with dementia. However, the full exploitation of data acquired during the monitoring period requires the use of automatic systems and techniques that allow the reduction of inherent complexity of the data, the extraction of most informative features, and the interpretability and decision-making. In this study we purpose a set of techniques for actigraphy patterns analysis for outpatient monitoring. These techniques include actigraphy signal pre-processing, quantification, nonlinear registration, feature extraction, detection of anomalies, and pattern visualization. In addition, techniques for daily actigraphy signals modelling and simulation are included to facilitate the development and test of new analysis techniques in controlled scenarios. PMID:25417076

Fuster-Garcia, Elies; Bresó, Adrián; Miranda, Juan Martínez; García-Gómez, Juan Miguel

2015-01-01

140

Production of translationally cold barium monohalide ions  

E-print Network

We have produced sympathetically cooled barium monohalide ions BaX$^+$ (X = F, Cl, Br) by reacting trapped, laser cooled Ba$^+$ ions with room temperature gas phase neutral halogen-containing molecules. Reaction rates for two of these (SF$_6$ and CH$_3$Cl) have been measured and are in agreement with classical models. BaX$^+$ ions are promising candidates for cooling to the rovibrational ground state, and our method presents a straightforward way to produce these polar molecular ions.

DePalatis, M V

2013-01-01

141

Barium ferrite films grown by laser ablation  

Microsoft Academic Search

Pulsed laser ablation (PLA) has been used to grow barium ferrite films on Al2O3 single crystal substrates. When deposition occurs in an oxidising atmosphere at high temperatures, the films are single BaFe12O19 phase, very well oriented with (001) texture, and exhibit a large perpendicular magnetic anisotropy. In this case, the microstructure and the anisotropy orientation are not influenced by variation

A. Lisfia; J. C. Lodder; P. de Haan; M. A. Smithers; F. J. G. Roesthuis

1998-01-01

142

Properties of barium ferrite sputtered films  

Microsoft Academic Search

Ferrites have magnetic properties suitable for electronic applications, especially in the microwave range (circulators and isolators). Hexagonal ferrite, such as barium ferrite (BaFe12O19 or BaM), are of great interest for microwave device applications because of their large resistivity and high permeability at high frequencies. BaM films, 1–10?m thick, were deposited under optimized conditions by RF magnetron sputtering on alumina and

S. Capraro; M. Le Berre; J. P. Chatelon; H. Joisten; E. Mery; B. Bayard; J. J. Rousseau; D. Barbier

2004-01-01

143

Pyroelectroluminescence of barium beta borate single crystals  

Microsoft Academic Search

Investigations were made of the pyroluminescence properties of barium beta borate single crystals. The measurements were made\\u000a at air pressures of 1–10 Pa and temperatures of 80–400 K. Luminescence was observed as isolated flashes over the entire range\\u000a of experimental conditions. It was observed that the light flashes coincided with the pyrocurrent oscillations.

V. T. Adamiv; Ya. V. Burak; M. R. Panasyuk; I. M. Teslyuk

1998-01-01

144

Electronic structure of nanograin barium titanate ceramics  

Microsoft Academic Search

The density of states and band structure of 20 nm barium titanate (BaTiO3, BT) ceramics are investigated by first-principles calculation. The full potential linearized augmented plane wave (FLAPW)\\u000a method is used and the exchange correlation effects are treated by the generalized gradient approximation (GGA). The results\\u000a show that there is substantial hybridization between the Ti 3d and O 2p states

Xiangyun Deng; Xiaohui Wang; Dejun Li; Longtu Li

2007-01-01

145

Resonance-fluorescence in barium ion clouds  

NASA Astrophysics Data System (ADS)

The problem of resonant-fluorescent scattering of sunlight by a high altitude, plane-parallel, barium ion cloud is solved numerically. Line strengths and profiles are computed using a modified version of the computer program LINEAR (Auer, Heasley and Milkey, 1972). Hyperfine structure of the spectral lines becomes important for very thick layers and is taken into account. Comparisons are made between coherent and completely noncoherent scattering results, and finally the influence of collisions on the radiation field is estimated.

Horak, H. G.; Whitaker, R. W.

1982-09-01

146

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

147

Fabrication of Barium Ferrite Thick Films  

NASA Astrophysics Data System (ADS)

During recent years the need for high quality self-biased barium ferrite (BaFe12O19) thick films had been increasing due to its chemical stability, anisotropy and oriented hexagonal M-type ferrites. Our goal is to fabricate barium ferrite thick films to be incorporated in self-biased microwave devises. Different methods such as sputtering, pulse laser deposition, CVD and modified liquid phase deposition have been used for thick film deposition with limited or no success for thickness above 300?m. Excessive residual stresses of BaM films deposited with the previous methods and/or their low coercivity are the main problems targeted by this project. We present a low cost solution using BaFe12O19 nanopowder mixing with epoxy. The mix is placed on alumina substrates to fabricate 500?m thick films of BaM, resulting thick films with good magnetic properties such as a 4?Ms between 2.000 to 2.500 Gauss and a coercivity of 3800 to 4000 Oe. In addition, we have integrated the barium ferrite thick films into microwave devises and successfully deposited their contact lines for their testing and use.

Jiang Yeh, Wei; Blengeri-Oyarce, Carla; Pillamari, Sundeep; Manoj Appikonda, Jnana; Diaz, Laura; Kranov, Yanko; McIlroy, David

2008-05-01

148

Creating unstable velocity-space distributions with barium injections  

NASA Technical Reports Server (NTRS)

Ion velocity-space distributions resulting from barium injections from orbiting spacecraft and shaped charges are discussed. Active experiments confirm that anomalous ionization processes may operate, but photoionization accounts for the production of the bulk of the barium ions. Pitch-angle diffusion and/or velocity-space diffusion may occur, but observations of barium ions moving upwards against gravity suggests that the ions retain a significant enough fraction of their initial perpendicular velocity to provide a mirror force. The barium ion plasmas should have a range of Alfven Mach numbers and plasma betas. Because the initial conditions can be predicted these active experiments should permit testing plasma instability hypotheses.

Pongratz, M. B.

1983-01-01

149

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. PMID:6796178

Vellacott, K D; Hardcastle, J D

1981-01-01

150

Colon cancer screening  

MedlinePLUS

... called a virtual colonoscopy . Other tests: Double-contrast barium enema is a special x-ray of the ... colon cancer: Colonoscopy every 10 years Double-contrast barium enema every 5 years Fecal occult blood test ( ...

151

Digital Rectal Exam (DRE)  

MedlinePLUS

... What further tests (such as a colonoscopy or barium enema ) will be necessary if the results suggest ... Questions to Ask the Doctor Tests and Procedures Barium Enema Biopsy Bone Marrow Aspiration and Biopsy Bone ...

152

Can Colorectal Polyps and Cancer Be Found Early?  

MedlinePLUS

... at the entire colon and rectum. Double contrast barium enema: This is an x-ray test of ... can find some polyps. Sigmoidoscopy, colonoscopy, double contrast barium enema, and CT colonography are good at finding ...

153

Polyps of the Colon and Rectum  

MedlinePLUS

... lining directly (colonoscopy) or by x-ray study (barium enema). There are three types of colorectal endoscopy: ( ... colon can also be indirectly examined using the barium enema x-ray technique. This examination uses a ...

154

Topical administration of 5-aminosalicylic acid enemas in patients with ulcerative colitis. Studies on rectal absorption and excretion.  

PubMed Central

5-aminosalicylic acid (5-ASA) is a new treatment for patients suffering from ulcerative colitis but only limited information is available about its rectal absorption. We therefore studied seven patients with ulcerative colitis in remission, and five with active disease to determine acetylated and free 5-ASA plasma concentrations and urinary acetyl 5-ASA after the administration of three different types of enemas: (2 g 5-ASA/100 ml, 4 g/100 ml, and 200 ml). In patients in remission urinary acetyl 5-ASA excretion was dose and volume dependent (p less than 0.01; p less than 0.05) but this correlation was absent in active disease. Because aminosalicylates are usually eliminated through the kidney, these low values (10% in active disease and 19% in those in remission) suggest that the beneficial action may be local. Urinary recovery was significantly lower in patients with active disease (p less than 0.01; p less than 0.02). No accumulation of 5-ASA was found in plasma after repeated daily administration. PMID:3979912

Campieri, M; Lanfranchi, G A; Boschi, S; Brignola, C; Bazzocchi, G; Gionchetti, P; Minguzzi, M R; Belluzzi, A; Labò, G

1985-01-01

155

[Compulsory outpatient treatment can prevent involuntary commitment.  

PubMed

Compulsory outpatient treatment (co-pt) has been possible in Denmark since 2010. The aim is to secure necessary treatment, reduce involuntary commitment and improve quality of life for patients with a severe psychiatric illness. Co-pt has been brought into use in 33 cases. This case report describes a patient with paranoid schizophrenia who several times developed severe psychotic symptoms shortly after discharge due to lack of compliance with treatment. Within one year of co-pt the patient was not admitted to hospital and improved in overall functioning. After terminating co-pt the patient rapidly deteriorated into psychotic relapse. PMID:25351399

Hansen, Lene Nørregård; Svensson, Eva Maria Birgitta; Brandt-Christensen, Anne Mette

2014-04-14

156

Effect of Different Weight Fraction on Dielectric Properties of Barium Ferrite-Barium Titanate Composites  

NASA Astrophysics Data System (ADS)

Barium ferrite-barium titanate composite systems, (1-x)BaFe12O19 - (x)BaTiO3 with different weight fractions of × = 0.0, 0.1, 0.3 and 0.5 were prepared via the conventional solid state reaction method using nano-sized starting materials. The x-ray diffraction peaks of the composite samples show two phases which can be indexed by the hexagonal barium ferrite and tetragonal barium titanate. Field emission scanning electron microscope (FESEM) image of sample with × = 0.1 shows formation of nano-sized BaTiO3 grains spreading evenly among the micron-sized BaFe12O19 grains after sintering at 1000 °C. The dielectric properties studies at room temperature of the composites samples show that sample with BaTiO3 weight fraction of × = 0.1 has the highest dielectric constant, ?' and lowest loss tangent, tan ? in the studied frequency range between 1 Hz and 1 MHz. Its highest dielectric constant value is ~ 1.2 × 103 and its lowest loss tangent is 0.06 at 50 Hz.

Anuar, S. N.; Zalita, Z.; Shamsudin, R.

2013-04-01

157

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

158

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...

159

Accounting for the transition from inpatient to outpatient surgery.  

PubMed

This article reports on some of the factors that have advanced and impeded hospital progress in moving from inpatient to outpatient surgery. Early on, patients, physicians, and hospital administrators all agreed that outpatient surgery had an intuitive appeal. Patients liked it because they didn't have to go in the hospital. Physicians liked it because they could get in and out of the outpatient surgery center more easily than the main hospital operating room. Administrators recognized the inherent appeal of outpatient procedures but were unable or unwilling to switch services from inpatient to outpatient for a variety of reasons. First, empty hospital beds and diminished scope of inpatient operations are a threat to the power of administrators. Moving surgery from inpatient to outpatient settings reduces inhouse operations. Second, reimbursement incentives were definitely in favor of continued inpatient care long after technology was in place for outpatient care. The third and most critical reason was that cost data on outpatient operations were just not available for making decisions on when to move into the outpatient setting. This review of the literature was intended to document the lack of relevant cost-based accounting. Instead, many other factors that more directly slowed progress were encountered. More than anything, this illustrates the erratic course of progress in health care reform. PMID:10172630

Welsh, F

1995-06-01

160

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

161

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

162

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

Code of Federal Regulations, 2010 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...

2010-10-01

163

Barium Enhancement in NGC 6819 Blue Stragglers  

NASA Astrophysics Data System (ADS)

Possible formation pathways for blue straggler stars include mergers in hierarchical triple systems, stellar collisions during dynamical encounters, and mass transfer from a giant companion. Extensive work on the blue stragglers in the old open cluster NGC 188 (7 Gyr) has led to exciting discoveries including a binary secondary mass distribution peaked at 0.5 MSolar and the detection of three young white dwarf binary companions. These indicate that mass transfer from an asymptotic giant branch star is the dominant mechanism for blue straggler formation in open clusters. Such mass transfer events should pollute the surface abundance of the blue straggler with nucleosynthesis products from the evolved donor. The other formation pathways, mergers and collisions, are predicted to produce no such enhancements. In an effort to move beyond NGC 188 and into other open clusters we present the first results of a surface abundance study of the blue stragglers in the intermediate-aged open cluster NGC 6819 (2.5 Gyr) using the Hydra multi-object spectrograph on the WIYN 3.5 m telescope. This part of our study centers on the s-process element barium as a tracer of formation via mass transfer. We compare the blue straggler surface abundance of barium to that of a sample of main-sequence stars in NGC 6819 and find multiple blue stragglers with anomalous abundances. Surprising, most of the blue stragglers with barium anomalies show no radial-velocity evidence for a companion. We gratefully acknowledge funding from the National Science Foundation under grant AST- 0908082 and the Wisconsin Space Grant Consortium.

Milliman, Katelyn; Mathieu, Robert D.; Schuler, Simon C.

2015-01-01

164

Scattering lengths of calcium and barium isotopes  

E-print Network

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 40Ca 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.

U. Dammalapati; L. Willmann; S. Knoop

2011-10-25

165

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

166

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

167

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

168

Outpatient management of home oxygen for bronchiolitis.  

PubMed

Objective. Home O2 has been shown to reduce hospitalizations for bronchiolitis but data on outpatient management of home O2 are lacking. We aim to describe outpatient management and challenges to home O2 for bronchiolitis. Methods. We surveyed Colorado and Utah (where home O2 use is prevalent) chapter members of the American Academy of Pediatrics regarding bronchiolitis home O2 management. Results. A total of 1030 providers were surveyed. The response rate was 21% (n = 214). Ninety percent of practicing primary care providers reported experience with home O2. Of those, 46% see patients on postdischarge day 1. Most providers see patients 1 to 3 times before stopping O2. Eighty percent continue O2 for 3 to 7 days. Weaning procedures vary and 56% practice more than 1 method. Most (41%) do not use continuous pulse oximetry. Challenges include parental noncompliance (51%) and difficulty knowing when to stop the O2 (57%). Conclusions. Management of home O2 in patients with bronchiolitis is a common in UT and CO. Weaning practices vary. Further research is needed. PMID:25149905

Freeman, Julia Fuzak; Weng, Hsin-Yi Cindy; Sandweiss, David

2015-01-01

169

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

170

[Geriatric outpatient healthcare: hierarchical demand structuring].  

PubMed

In Brazil, the rapid growth of the elderly population has been causing a great impact on the healthcare system, with increased costs and service utilization. The inefficiency of traditional models for geriatric healthcare has made it essential to change the healthcare concepts for this population. This can take place through the development of new healthcare models that include the means to identify, assess and treat elderly patients with a variety of morbid and functional conditions, and which can be applied diverse healthcare scenarios. An outpatient model is proposed, with two stages that differ in the depth and coverage of their actions. These stages are organized as increasing levels of complexity and are capable of selecting subgroups of individuals that, because of their risk characteristics, should follow different paths through the healthcare structure. This paper discusses the first stage of this model, which involves risk identification among large groups of elderly people, by means of structuring a hierarchical flow of actions and using assessment tools of adequate sensitivity and specificity. Individuals aged 65 years or over who are detected through walk-in outpatient consultation, home visits or telephone interview are classified using a rapid screening risk evaluation instrument composed of eight items. Depending upon the level of risk presented, the individual will either be referred to another level of functional evaluation (medium-high and high risk levels), or to normal clinical care and old people's community centers (low and medium risk levels). The second stage will be the subject of a subsequent paper. PMID:15895154

Lourenço, Roberto Alves; Martins, Cláudia de Souza Ferreira; Sanchez, Maria Angélica S; Veras, Renato Peixoto

2005-04-01

171

Enteroclysis  

MedlinePLUS

... bowel enema; CT enteroclysis; Small bowel follow-through; Barium enteroclysis ... Possible injury to bowel structures during the study Barium may cause constipation. Tell your health care provider ...

172

308 Brain Research, 498 (1989) 308-314 Potassium conductance block by barium in amphibian  

E-print Network

308 Brain Research, 498 (1989) 308-314 Elsevier BRES 14831 Potassium conductance block by barium cell; Glial cell; Retina; Barium; Potassium conductance; Tiger salamander The effect of barium on M in situ (retinal slice and isolated retina). Barium effects were similar in both cases. In dissociated

Newman, Eric A.

173

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

E-print Network

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

Huh, Chih-An

174

Cation non-stoichiometry in yttrium-doped barium zirconate: phase behavior, microstructure, and proton conductivity  

E-print Network

Cation non-stoichiometry in yttrium-doped barium zirconate: phase behavior, microstructure approach in which the barium deficiency is precisely controlled. The perovskite phase is tolerant to barium-phase region barium deficiency also has a detrimental impact on grain boundary conductivity, as a result both

175

Earthquake-induced barium anomalies in the Lisan Formation, Dead Sea Rift valley, Israel  

E-print Network

Earthquake-induced barium anomalies in the Lisan Formation, Dead Sea Rift valley, Israel Amitai Editor: L. Stixrude Keywords: barium Dead Sea seismite earthquake Lisan recurrence rate Prominent barium The present paper is a rst report of prominent barium concen- tration anomalies in seismically perturbed

Marco, Shmuel "Shmulik"

176

Barium ion Zeeman and space potential diagnostic  

NASA Astrophysics Data System (ADS)

A diagnostic has been developed to simultaneously determine the magnetic field and space potential in fusion-like plasmas.1 In Fig. 1, we show schematically the diagnostic concept. The magnetic field is determined by a measurement of the Zeeman resonance absorption pattern of an energetic (<30 keV) barium ion beam (10 ?A). The spectrum is obtained by laser-induced fluorescence. In our approach, similar to a technique developed at UC Irvine,2 the absorption spectrum of the barium ion beam is measured as the frequency of a narrow-linewidth dye laser is scanned over the Doppler-shifted Zeeman-split resonance transition. The resonantly scattered light at 4934.1 Å is collected without frequency processing other than a narrow-band filter to reduce background plasma light. Space potentials are determined by a measurement of the Doppler shift due to a change in beam energy, E=E0-e?p(E0 is the beam energy, ?p is the plasma potential). The laser is injected tangentially to the ion beam to take advantage of the narrow Doppler spread in the direction of the beam.

Wickham, M.; Lazar, N. H.; Rynn, N.

1985-05-01

177

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

178

An Employee Questionnaire for Assessing Patient Safety in Outpatient Surgery  

Microsoft Academic Search

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 perspective project currently underway at the University of Wisconsin-Madison, examines the impact of a systems engineering intervention on both employees and patients. In this paper, we

Pascale Carayon; Carla J. Alvarado; Ann Schoofs Hundt; Scott Springman; Amanda Borgsdorf; Peter L. T. Hoonakker

2005-01-01

179

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

180

Facilitating Problem Drinking Clients' Transition from Inpatient to Outpatient Care.  

ERIC Educational Resources Information Center

Reports on use of transition groups to improve linkages between inpatient and outpatient alcoholism treatment. Notes that clients who had access to transition group had more favorable outcomes than did clients who had no access to the group. Sees group as especially useful for inpatients who had encounters with outpatient clinic before their…

Hanson, Meredith; And Others

1994-01-01

181

Use of Emergency Outpatient Services in a Small Rural Hospital  

PubMed Central

Use of emergency outpatient services is described for a 34-bed rural hospital in Alberta. One in 10 outpatients was classified as having serious and extreme emergencies. Less than 3% were transferred to a higher level of care; 10% were admitted to the local hospital. Recommendations are made for staffing, training, inventory, and funding of small rural hospital emergency departments. PMID:21221292

Thompson, James M.; Ratcliff, Melva J.

1992-01-01

182

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

183

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

184

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

...2014-10-01 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...

2014-10-01

185

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

Code of Federal Regulations, 2012 CFR

...2012-10-01 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...

2012-10-01

186

77 FR 51542 - Medicare Program; Solicitation of Two Nominations to the Advisory Panel on Hospital Outpatient...  

Federal Register 2010, 2011, 2012, 2013

...DEPARTMENT OF HEALTH AND HUMAN...the Advisory Panel on Hospital Outpatient Payment AGENCY...the Advisory Panel on Hospital Outpatient Payment...the Secretary of the Department of Health and Human...and supervision of hospital outpatient...

2012-08-24

187

75 FR 78901 - Payment for Inpatient and Outpatient Health Care Professional Services at Non-Departmental...  

Federal Register 2010, 2011, 2012, 2013

...Payment for Inpatient and Outpatient Health Care Professional Services at Non-Departmental...Charges Associated With Non-VA Outpatient Care AGENCY: Department of Veterans Affairs...payments for inpatient and outpatient health care professional services and other...

2010-12-17

188

75 FR 7218 - Payment for Inpatient and Outpatient Health Care Professional Services at Non-Departmental...  

Federal Register 2010, 2011, 2012, 2013

...Payment for Inpatient and Outpatient Health Care Professional Services at Non-Departmental...Charges Associated With Non-VA Outpatient Care AGENCY: Department of Veterans Affairs...payments for inpatient and outpatient health care professional services and other...

2010-02-18

189

Do all barium stars have a white dwarf companion?  

NASA Technical Reports Server (NTRS)

International Ultraviolet Explorer short-wavelength, low-dispersion spectra were analyzed for four barium, two mild barium, and one R-type carbon star in order to test the hypothesis that the barium and related giants are produced by mass transfer from a companion now present as a white dwarf. An earlier tentative identification of a white dwarf companion to the mild barium star Zeta Cyg is confirmed. For the other stars, no ultraviolet excess attributable to a white dwarf is seen. Limits are set on the bolometric magnitude and age of a possible white dwarf companion. Since the barium stars do not have obvious progenitors among main-sequence and subgiant stars, mass transfer must be presumed to occur when the mass-gaining star is already on the giant branch. This restriction, and the white dwarf's minimum age, which is greater than 8 x 10 to the 8th yr, determined for several stars, effectively eliminates the hypothesis that mass transfer from an asymptotic giant branch star creates a barium star. Speculations are presented on alternative methods of producing a barium star in a binary system.

Dominy, J. F.; Lambert, D. L.

1983-01-01

190

Asystole following regadenoson infusion in stable outpatients.  

PubMed

Regadenoson is a selective A2A receptor agonist approved for use as a pharmacologic stress agent for myocardial perfusion imaging after several multicenter trials demonstrated its equivalence in diagnostic accuracy for the detection of coronary artery disease and a decreased incidence of serious side effects as compared to adenosine. Recently, the FDA released a safety announcement advising of the rare but serious risk of heart attack and death associated with regadenoson and adenosine in cardiac stress testing, particularly in patients with unstable angina or cardiovascular instability. We report two cases of asystole with hemodynamic collapse in stable outpatients soon after receiving a standard regadenoson injection. The prevalence of potentially life threatening bradycardia, including asystole, associated with the use of regadenoson may be greater than previously expected. These cases highlight the need for cardiac stress labs to anticipate the potential for serious side effects with all patients during the administration of coronary vasodilators. PMID:24879452

Rosenblatt, Jeffrey; Mooney, Deirdre; Dunn, Timothy; Cohen, Mylan

2014-10-01

191

A high-altitude barium radial injection experiment  

NASA Technical Reports Server (NTRS)

A rocket launched from Poker Flat, Alaska, carried a new type of high-explosive barium shaped charge to 571 km, where detonation injected a thin disk of barium vapor with high velocity nearly perpendicular to the magnetic field. The TV images of the injection are spectacular, revealing three major regimes of expanding plasma which showed early instabilities in the neutral gas. The most unusual effect of the injection is a peculiar rayed barium-ion structure lying in the injection plane and centered on a 5 km 'black hole' surrounding the injection point. Preliminary electrostatic computer simulations show a similar rayed development.

Wescott, E. M.; Stenbaek-Nielsen, H. C.; Hallinan, T. J.; Deehr, C. S.; Romick, G. J.; Olson, J. V.; Roederer, J. G.; Sydora, R.

1980-01-01

192

42 CFR 419.32 - Calculation of prospective payment rates for hospital outpatient services.  

Code of Federal Regulations, 2010 CFR

...MEDICARE & MEDICAID SERVICES, DEPARTMENT OF HEALTH AND HUMAN SERVICES...PROSPECTIVE PAYMENT SYSTEM FOR HOSPITAL OUTPATIENT DEPARTMENT SERVICES Basic Methodology...Prospective Payment Rates for Hospital Outpatient Services §...

2010-10-01

193

Designed microstructures in textured barium hexaferrite  

NASA Astrophysics Data System (ADS)

It is a fundamental principle of materials science that the microstructure of a material defines its properties and ultimately its performance for a given application. A prime example of this can be found in the large conch shell Strombus gigas, which has an intricate microstructure extending across five distinct length scales. This microstructure gives extraordinary damage tolerance to the shell. The structure of Strombus gigas cannot be replicated in a modern engineering ceramic with any existing processing technique, so new processing techniques must be developed to apply this structure to a model material. Barium hexaferrite was chosen as a model material to create microstructures reminiscent of Strombus gigas and evaluate its structure-property relations. This work describes novel processing methods to produce textured barium hexaferrite with no coupling between the sample geometry and the texture direction. This technique, combining magnetic field-assisted gelcasting with templated grain growth, also allows multilayer samples to be fabricated with different texture directions in adjacent layers. The effects of adding either B2O3 or excess BaCO 3 on the densification and grain growth of barium hexaferrite was studied. The texture produced using this technique was assessed using orientation imaging microscopy (OIM) at Oak Ridge National Laboratory. These measurements showed peak textures as high as 60 MRD and sharp interfaces between layers cast with different texture directions. The effect of oxygen on the quality of gelcasting is also discussed, and it is shown that with proper mold design, it is possible to gelcast multiple layers with differing texture directions without delamination. Monolithic and multilayer samples were produced and tested in four point bending to measure the strength and work of fracture. Modulus measurements, made with the ultrasonic pulse-echo technique, show clear signs of microcracking in both the isotropic and textured samples. Both the strength and work of fracture were shown to be affected by the texture direction. The multilayer samples did not show significant improvements in either strength or work of fracture, but they did show much less variability than the monolithic samples.

Hovis, David Brian

194

Theoretical isotope shifts in neutral barium  

E-print Network

The present work deals with a set of problems in isotope shifts of neutral barium spectral lines. Some well known transitions ($6s^2~^1S_0-6s6p~^{1,3}P^o_1$ and $6s^2~^1S_0-6p^2~^3P_0$) are first investigated. Values of the changes in the nuclear mean-square charge radius are deduced from the available experimental isotope shifts using our ab initio electronic factors. The three sets $\\{ \\delta\\langle r^2\\rangle^{A,A'}\\} $ obtained from these lines are consistent with each other. The combination of the available nuclear mean-square radii with our electronic factors for the $6s5d~^3D_{1,2} -6s6p~^{1}P^o_1$ transitions produces isotope shift values in conflict with the laser spectroscopy measurements of Dammalapati et al. (Eur. Phys. J. D 53, 1 (2009)).

Nazé, Cédric; Godefroid, Michel

2015-01-01

195

Synthesis and characterization of barium hexagonal ferrite  

NASA Astrophysics Data System (ADS)

Barium Hexagonal ferrite (BaFe12O19) was synthesized by a two step process, first by high-energy ball milling and then sintering the milled powder subsequently at 950°C. The phase formation and morphology studies were carried out using X-ray Diffraction (XRD) and High Resolution Scanning Electron Microscopy (HRSEM) respectively. XRD results clearly show the phase purity and the good crystalline nature of BaFe12O19. The mean particle size was found to be 80 nm from the SEM image. The magnetic properties such as saturation magnetization and coercive field were calculated from the magnetization curve, which was obtained using Vibrating Sample Magnetometer (VSM). A possible relation between the magnetic hysteresis curve and the microstructure of the sintered sample has been investigated.

Manikandan, M.; Venkateswaran, C.

2013-02-01

196

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

197

A new polymorph of barium chloroanilate trihydrate.  

PubMed

Single crystals of a new polymorph of the title compound, barium(II) 3,6-dichloro-2,5-dihydroxy-1,4-benzoquinone trihydrate, Ba2+.C6Cl2O4(2-).3H2O, have been grown in sodium metasilicate gel. Each Ba2+ cation is coordinated by eight O atoms. The Ba2+ cations are bridged by an O atom of a ligand around the centre of symmetry at Wyckoff position 4a and by the O atom of a water molecule around the centre of symmetry at Wyckoff position 4b, forming a sheet parallel to the (100) plane. Loose contacts are found around one of the water molecules, as observed in the Cmca form. PMID:11173382

Kashino, S; Ishida, H; Fukunaga, T; Oishi, S

2001-01-01

198

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

199

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

200

A search for technetium (Tc II) in barium stars  

NASA Technical Reports Server (NTRS)

The authors searched without success for the lines of Tc II at 2647.02, 2610.00 and 2543.24 A in IUE spectra of the barium stars HR 5058, Omicron Vir, and Zeta Cap. The lack of Tc II implies that the observed s-process enhancements were produced more than half a million years ago and supports the suggestion that the spectral peculiarities of barium stars are probably related to the binary nature of the stars.

Little-Marenin, Irene R.; Little, Stephen J.

1987-01-01

201

'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

202

Barium ferrite nanoparticles prepared directly by aerosol pyrolysis  

Microsoft Academic Search

BaFe12O19 nanoparticles, 10 nm in diameter, have been obtained by combination of two methods, the citrate precursor and the aerosol pyrolysis technique. For the first time, well-crystallised barium ferrite particles were obtained by pyrolysis of an aerosol, produced by ultrasonic frequency spraying of a barium iron citrate aqueous solution, in a tubular furnace at 1000°C, without further heat treatment. The

T González-Carreño; M. P Morales; C. J Serna

2000-01-01

203

Growth and characterization of barium ferrite films grown using PECVD  

Microsoft Academic Search

Deposition of c-axis perpendicularly oriented barium ferrite (BaFe12O19) films was attempted by means of plasma enhanced chemical vapor deposition (PECVD). A substituted acetylacetonate barium complex has been used with ferrocene in a PECVD system to deposit films of BaFe12O19. These films were examined for crystallinity, composition and magnetic properties. The crystallinity was measured by x-ray diffraction (XRD), the composition was

Radhakrishnan Padmanabhan; Ehab Marji; Yanko Kranov; Daqing Zhang; David N. McIlroy

2004-01-01

204

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. PMID:24839499

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

2014-01-01

205

Fatal barium chloride poisoning: four cases report and literature review.  

PubMed

Barium is an alkaline earth metal which has a variety of uses including in the manufacturing industry and in medicine. However, adverse health effects and fatalities occur due to absorption of soluble barium compounds, notably the chloride, nitrate, and hydroxide, which are toxic to humans. Although rare, accidental and suicidal modes of poisoning are sporadically reported in the literature.We describe 4 cases of poisoning due to barium chloride in China. In witnessed cases, severe gastrointestinal symptoms, hypokalemia leading to muscle weakness, cardiac arrhythmias, and respiratory failure were noted. Autopsy showed some nonspecific but common findings, such as subendocardial hemorrhage in the ventricles, visceral petechiae, and fatty changes in the liver. Interestingly, microscopic examination showed degenerative changes and amorphous, flocculent foamy materials in the renal tubules. Toxicology was relevant for barium in blood and tissues. Three of the cases were accidental and 1 homicidal in nature. A round-up of relevant literature on fatal barium compounds poisoning is also provided. Forensic pathologists should be aware of the clinical presentations of barium compound poisoning and especially look for any evidence of hypokalemia. Still, postmortem toxicological and histological studies are essential for an accurate identification of the cause of death. PMID:23629399

Ananda, Sunnassee; Shaohua, Zhu; Liang, Liu

2013-06-01

206

Psychiatric Disorders in Outpatients With Borderline Intellectual Functioning: Comparison With Both Outpatients From Regular Mental Health Care and Outpatients With Mild Intellectual Disabilities  

PubMed Central

Objective: In the Netherlands, patients with borderline intellectual functioning are eligible for specialized mental health care. This offers the unique possibility to examine the mix of psychiatric disorders in patients who, in other countries, are treated in regular outpatient mental health care clinics. Our study sought to examine the rates of all main Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, Text Revision, Axis I psychiatric diagnoses in outpatients with borderline intellectual functioning of 2 specialized regional psychiatric outpatient departments and to compare these with rates of the same disorders in outpatients from regular mental health care (RMHC) and outpatients with mild intellectual disabilities (IDs). Method: Our study was a cross-sectional, anonymized medical chart review. All participants were patients from the Dutch regional mental health care provider Rivierduinen. Diagnoses of patients with borderline intellectual functioning (borderline intellectual functioning group; n = 235) were compared with diagnoses of patients from RMHC (RMHC group; n = 1026) and patients with mild ID (mild ID group; n = 152). Results: Compared with the RMHC group, psychotic and major depressive disorders were less common in the borderline intellectual functioning group, while posttraumatic stress disorder and V codes were more common. Compared with the mild ID group, psychotic disorders were significantly less common. Conclusion: Mental health problems in people with borderline intellectual functioning may not be well addressed in general psychiatry, or by standard psychiatry for patients with ID. Specific attention to this group in clinical practice and research may be warranted lest they fall between 2 stools. PMID:25007114

Wieland, Jannelien; Haan, Sara Kapitein-de; Zitman, Frans G

2014-01-01

207

Laboratory tests and compliance of dermatologic outpatients.  

PubMed

Laboratory tests, including blood tests and urine analysis, are frequently performed in the dermatology outpatient clinic, but doctors often do not consider the cognitive or psychological effect of the examinations. Based on terror management theory, we hypothesized that performing laboratory tests increases the patient's fear of mortality, and therefore has a positive effect on the patient's attitude toward the doctor's recommendations and willingness to accept them. The study employed a single factor between-subjects design, using a questionnaire completed by the patients. One group consisted of patients who had undergone laboratory tests 1 week before the survey, and the other group consisted of patients who had not undergone a laboratory test. Although the differences between two groups were not statistically significant, the patients who had laboratory tests had tendency to show even lower positive attitude toward the doctor's recommendations and less intention to follow the recommendations. In contrast to our hypothesis, performing laboratory tests does not subliminally increase patients' fears or anxieties about their disease or their compliance with doctors' recommendations. PMID:24555101

Shin, Won Ung; Baek, Yoo Sang; Kim, Tom Joonhwan; Oh, Chil Hwan; Kim, Jaehwan

2013-01-01

208

Symptom Checklist 90-Revised in neurological outpatients.  

PubMed

The Symptom Checklist 90-Revised (SCL-90-R) is an international, widely used, self-report questionnaire of multidimensional complaints with normative data for healthy control subjects and psychiatric patients. The questionnaire is also often used in neurological patients. Little is known about the amount and pattern of complaints in this group, and normative data are lacking. We therefore analyzed self-reported symptoms on the SCL-90-R of a neurological population (N = 600). Moreover, we compared the answer patterns of five subgroups: neurodegenerative disease, cerebrovascular disease, epilepsy, brain tumor, and traumatic brain injury. Neurological outpatients scored significantly higher in comparison with normative data from healthy control subjects, with most pronounced scores on Inadequacy of Thinking and Acting, Depression, and Somatization (p < .01, effect sizes 1.69, 0.83, and 0.83). No differences between the various pathologies were found. Although it is difficult to determine whether the complaints arise directly from the neurological disease or more indirectly from psychiatric disturbances accompanying the disease, simply comparing a neurological patient to normative data for healthy control subjects can lead to inappropriate classifications. Complaints of our patients should not be directly interpreted as psychopathology. A two-step procedure in which scores on the SCL-90-R are first compared to healthy control subjects and secondly to neurological patients can be helpful in the interpretation. PMID:24479727

Ruis, Carla; van den Berg, Esther; van Stralen, Haike E; Huenges Wajer, Irene M C; Biessels, Geert Jan; Kappelle, L Jaap; Postma, Albert; van Zandvoort, Martine J E

2014-01-01

209

77 FR 38042 - TRICARE; Implementation of TRICARE Transitional Outpatient Payments  

Federal Register 2010, 2011, 2012, 2013

...TTOPs) under TRICARE's Outpatient Prospective Payment System (OPPS). DATES: The...revision to the TRICARE Reimbursement Manual. The TRICARE Reimbursement Manual is available at http://manuals.tricare.osd.mil/. Dated:...

2012-06-26

210

FREQUENCY OF BORDERLINE PERSONALITY DISORDER AMONG PSYCHIATRIC OUTPATIENTS IN SHANGHAI  

PubMed Central

The objective of this study was to investigate the frequency, clinical characteristics, and comorbidity of borderline personality disorder (BPD) among psychiatric outpatients in two clinics at Shanghai Mental Health Center. A cross-sectional investigation was conducted. From 3,075 outpatients screened using the Personality Diagnostic Questionnaire-IV+, 2,284 patients positive for a personality disorder were assessed using the Structured Clinical Interview for DSM-IV Personality Disorders. The frequency of BPD among the psychiatric outpatients was 5.8%, with afrequency of 3.5% among males and 7.5% among females (p < .01). BPD was found to have extensive comorbidity with Axis I and II disorders. This study proves that BPD does occur in China. The detected frequency among outpatients is lower than that reported in North America. PMID:22686227

Wang, Lanlan; Ross, Colin A.; Zhang, Tianhong; Dai, Yunfei; Zhang, Haiyin; Tao, Mingyi; Qin, Jianying; Chen, Jue; He, Yanling; Zhang, Mingyuan; Xiao, Zeping

2014-01-01

211

Synthesis of single-crystal barium titanium isopropoxide complex to form barium titanate  

SciTech Connect

Single-crystal barium titanate double alkoxide complex with a composition presumed to be BaTi(OCH(CH[sub 3])[sub 2])[sub 6][center dot]xC[sub 6]H[sub 6] was successfully synthesized in this work. The crystal was converted to BaTiO[sub 3] at 100 C. The preparation of the oxides via single crystals of metal alkoxides has some advantage over the well-known sol-gel method in that it results in oxides with well-defined and homogeneous compositions at the atomic level and in fine particle sizes, smaller than 50 nm.

Suyama, Yoko (Japan Fine Ceramic Center, Nagoya (Japan)); Nagasawa, Mitsuru (Toyota Technological Inst., Nagoya (Japan))

1994-02-01

212

Biokinetics and effects of barium sulfate nanoparticles.  

PubMed

BackgroundNanoparticulate barium sulfate has potential novel applications and wide use in the polymer and paint industries. Only a short-term inhalation study on barium sulfate nanoparticles (BaSO4 NPs) has been published [Part Fibre Toxicol 11:16, 2014]. We performed comprehensive biokinetic studies of 131BaSO4 NPs administered via different routes and of acute and subchronic pulmonary responses to instilled or inhaled BaSO4 in rats.MethodsWe compared the tissue distribution of 131Ba over 28 days after intratracheal (IT) instillation, and over 7 days after gavage and intravenous (IV) injection of 131BaSO4. Rats were exposed to 50 mg/m3 BaSO4 aerosol for 4 or 13 weeks (6 h/day, 5 consecutive days/week), gross and histopathology, blood and bronchoalveolar lavage (BAL) fluid analyses were performed. BAL fluid from instilled rats was also analyzed.ResultsInhaled BaSO4 NPs showed no toxicity after 4-week exposure, but a slight neutrophil increase in BAL after 13-week exposure was observed. Lung burden of inhaled BaSO4 NPs after 4-week exposure (0.84¿±¿0.18 mg/lung) decreased by 95% over 34 days. Instilled BaSO4 NPs caused dose-dependent inflammatory responses in the lungs. Instilled BaSO4 NPs (0.28 mg/lung) was cleared with a half-life of¿¿¿9.6 days. Translocated 131Ba from the lungs was predominantly found in the bone (29%). Only 0.15% of gavaged dose was detected in all organs at 7 days. IV-injected 131BaSO4 NPs were predominantly localized in the liver, spleen, lungs and bone at 2 hours, but redistributed from the liver to bone over time. Fecal excretion was the dominant elimination pathway for all three routes of exposure.ConclusionsPulmonary exposure to instilled BaSO4 NPs caused dose-dependent lung injury and inflammation. Four-week and 13-week inhalation exposures to a high concentration (50 mg/m3) of BaSO4 NPs elicited minimal pulmonary response and no systemic effects. Instilled and inhaled BaSO4 NPs were cleared quickly yet resulted in higher tissue retention than when ingested. Particle dissolution is a likely mechanism. Injected BaSO4 NPs localized in the reticuloendothelial organs and redistributed to the bone over time. BaSO4 NP exhibited lower toxicity and biopersistence in the lungs compared to other poorly soluble NPs such as CeO2 and TiO2. PMID:25331813

Konduru, Nagarjun; Keller, Jana; Ma-Hock, Lan; Gröters, Sibylle; Landsiedel, Robert; Donaghey, Thomas C; Brain, Joseph D; Wohlleben, Wendel; Molina, Ramon M

2014-10-21

213

Oral anticancer agent medication adherence by outpatients.  

PubMed

In the present study, medication adherence and factors affecting adherence were examined in patients taking oral anticancer agents. In June 2013, 172 outpatients who had been prescribed oral anticancer agents by Ogaki Municipal Hospital (Ogaki, Gifu, Japan) completed a questionnaire survey, with answers rated on a five-point Likert scale. The factors that affect medication adherence were evaluated using a customer satisfaction (CS) analysis. For patients with good and insufficient adherence to medication, the median ages were 66 years (range, 21-85 years) and 73 years (range, 30-90 years), respectively (P=0.0004), while the median dosing time was 131 days (range, 3-3,585 days) and 219 days (24-3,465 days), respectively (P=0.0447). In 36.0% (62 out of 172) of the cases, there was insufficient medication adherence; 64.5% of those cases (40 out of 62) showed good medication compliance (4-5 point rating score). However, these patients did not fully understand the effects or side-effects of the drugs, giving a score of three points or less. The percentage of patients with good medication compliance was 87.2% (150 out of 172). Through the CS analysis, three items, the interest in the drug, the desire to consult about the drug and the condition of the patient, were extracted as items for improvement. Overall, the medication compliance of the patients taking the oral anticancer agents was good, but the medication adherence was insufficient. To improve medication adherence, a better understanding of the effectiveness and necessity of drugs and their side-effects is required. In addition, the interest of patients in their medication should be encouraged and intervention should be tailored to the condition of the patient. These steps should lead to improved medication adherence. PMID:25295117

Kimura, Michio; Usami, Eiseki; Iwai, Mina; Nakao, Toshiya; Yoshimura, Tomoaki; Mori, Hiromi; Sugiyama, Tadashi; Teramachi, Hitomi

2014-11-01

214

Oral anticancer agent medication adherence by outpatients  

PubMed Central

In the present study, medication adherence and factors affecting adherence were examined in patients taking oral anticancer agents. In June 2013, 172 outpatients who had been prescribed oral anticancer agents by Ogaki Municipal Hospital (Ogaki, Gifu, Japan) completed a questionnaire survey, with answers rated on a five-point Likert scale. The factors that affect medication adherence were evaluated using a customer satisfaction (CS) analysis. For patients with good and insufficient adherence to medication, the median ages were 66 years (range, 21–85 years) and 73 years (range, 30–90 years), respectively (P=0.0004), while the median dosing time was 131 days (range, 3–3,585 days) and 219 days (24–3,465 days), respectively (P=0.0447). In 36.0% (62 out of 172) of the cases, there was insufficient medication adherence; 64.5% of those cases (40 out of 62) showed good medication compliance (4–5 point rating score). However, these patients did not fully understand the effects or side-effects of the drugs, giving a score of three points or less. The percentage of patients with good medication compliance was 87.2% (150 out of 172). Through the CS analysis, three items, the interest in the drug, the desire to consult about the drug and the condition of the patient, were extracted as items for improvement. Overall, the medication compliance of the patients taking the oral anticancer agents was good, but the medication adherence was insufficient. To improve medication adherence, a better understanding of the effectiveness and necessity of drugs and their side-effects is required. In addition, the interest of patients in their medication should be encouraged and intervention should be tailored to the condition of the patient. These steps should lead to improved medication adherence. PMID:25295117

KIMURA, MICHIO; USAMI, EISEKI; IWAI, MINA; NAKAO, TOSHIYA; YOSHIMURA, TOMOAKI; MORI, HIROMI; SUGIYAMA, TADASHI; TERAMACHI, HITOMI

2014-01-01

215

Prospects for Barium Tagging in Gaseous Xenon  

SciTech Connect

Tagging events with the coincident detection of a barium ion would greatly reduce the background for a neutrino-less double beta decay search in xenon. This paper describes progress towards realizing this goal. It outlines a source that can produce large quantities of Ba++ in gas, shows that this can be extracted to vacuum, and demonstrates a mechanism by which the Ba++ can be efficiently converted to Ba+ as required for laser identification. It is clear from this study that electrospray is a convenient mechanism for producing Ba++ is gas at atmospheric pressure. It is likely that the source will perform just as effectively at higher pressures. Even though the source region has water vapour and methanol vapour at the 0.3% level, there is no evidence for molecular formation. The use of TEA offers an effective method to achieve the charge state conversion. The overall design of the ion extraction from high pressure to vacuum is very similar to the scheme proposed for the final detector and this appears to work well although the efficiency is not yet determined.

Sinclair, D.; /Carleton U. /TRIUMF; Rollin, E.; /Carleton U.; Smith, J.; /Carleton U.; Mommers, A.; /Ottawa U.; Ackerman, N.; /SLAC; Aharmim, B.; /Laurentian U.; Auger, M.; /Bern U., LHEP; Barbeau, P.S.; /Stanford U., Phys. Dept.; Benitez-Medina, C.; /Colorado State U.; Breidenbach, M.; /SLAC; Burenkov, A.; /Moscow, ITEP; Cook, S.; /SLAC; Coppens, A.; /Carleton U.; Daniels, T.; /Massachusetts U., Amherst; DeVoe, R.; /Stanford U., Phys. Dept.; Dobi, A.; /Maryland U.; Dolinski, M.J.; Donato, K.; /Stanford U., Phys. Dept.; Fairbank, W., Jr.; /Colorado State U.; Farine, J.; /Laurentian U.; Giroux, G.; /Bern U., LHEP /Carleton U. /Stanford U., Phys. Dept. /Carleton U. /Laurentian U. /Carleton U. /SLAC /Indiana U. /Indiana U., CEEM /Korea U. /Stanford U., Phys. Dept. /SLAC /Alabama U. /Colorado State U. /Stanford U., Phys. Dept. /Alabama U. /SLAC /Stanford U., Phys. Dept. /Alabama U. /Massachusetts U., Amherst /SLAC /Alabama U. /SLAC /Maryland U. /Moscow, ITEP /Stanford U., Phys. Dept. /Maryland U. /Bern U., LHEP /Laurentian U. /SLAC /Maryland U.

2012-05-03

216

Co-doped Barium Phosphate Glass  

NASA Astrophysics Data System (ADS)

Co-doping of a P2O5:BaO glass matrix with divalent tin and trivalent samarium ions has been realized by the melt-quenching technique with the purpose of investigating the material's luminescent properties. Photoluminescence excitation spectra obtained by monitoring Sm3+ 4G5/2 emission showed a broad excitation band around 290 nm (absent in a Sm3+-doped reference), typical of donor/acceptor energy transfer. Under such excitation, the material exhibits a reddish-white emission. Time-resolved spectra recorded under the 290-nm excitation (non-resonant with Sm3+ excitation peaks) exposed a broad blue-white band characteristic of twofold-coordinated Sn centers and orange-red emission bands of Sm3+ ions, which appeared well separated in time in accord with their emission decay dynamics. Consequently, the data indicate that light absorption occurs at Sn centers (donors) followed by energy transfer to samarium ions (acceptors) which results in populating the 4G5/2 emitting state in Sm3+. Energy transfer pathways likely resulting in the sensitization of Sm3+ photoluminescence are discussed. Results are put into context in terms of the potential of SnO and rare-earth co-doped barium phosphate glasses for use in white light-emitting devices.

Jiménez, J. A.

2014-09-01

217

High H? ionic conductivity in barium hydride  

NASA Astrophysics Data System (ADS)

With hydrogen being seen as a key renewable energy vector, the search for materials exhibiting fast hydrogen transport becomes ever more important. Not only do hydrogen storage materials require high mobility of hydrogen in the solid state, but the efficiency of electrochemical devices is also largely determined by fast ionic transport. Although the heavy alkaline-earth hydrides are of limited interest for their hydrogen storage potential, owing to low gravimetric densities, their ionic nature may prove useful in new electrochemical applications, especially as an ionically conducting electrolyte material. Here we show that barium hydride shows fast pure ionic transport of hydride ions (H?) in the high-temperature, high-symmetry phase. Although some conductivity studies have been reported on related materials previously, the nature of the charge carriers has not been determined. BaH2 gives rise to hydride ion conductivity of 0.2 S cm?1 at 630 °C. This is an order of magnitude larger than that of state-of-the-art proton-conducting perovskites or oxide ion conductors at this temperature. These results suggest that the alkaline-earth hydrides form an important new family of materials, with potential use in a number of applications, such as separation membranes, electrochemical reactors and so on.

Verbraeken, Maarten C.; Cheung, Chaksum; Suard, Emmanuelle; Irvine, John T. S.

2015-01-01

218

High H(-) ionic conductivity in barium hydride.  

PubMed

With hydrogen being seen as a key renewable energy vector, the search for materials exhibiting fast hydrogen transport becomes ever more important. Not only do hydrogen storage materials require high mobility of hydrogen in the solid state, but the efficiency of electrochemical devices is also largely determined by fast ionic transport. Although the heavy alkaline-earth hydrides are of limited interest for their hydrogen storage potential, owing to low gravimetric densities, their ionic nature may prove useful in new electrochemical applications, especially as an ionically conducting electrolyte material. Here we show that barium hydride shows fast pure ionic transport of hydride ions (H(-)) in the high-temperature, high-symmetry phase. Although some conductivity studies have been reported on related materials previously, the nature of the charge carriers has not been determined. BaH2 gives rise to hydride ion conductivity of 0.2 S cm(-1) at 630 °C. This is an order of magnitude larger than that of state-of-the-art proton-conducting perovskites or oxide ion conductors at this temperature. These results suggest that the alkaline-earth hydrides form an important new family of materials, with potential use in a number of applications, such as separation membranes, electrochemical reactors and so on. PMID:25485988

Verbraeken, Maarten C; Cheung, Chaksum; Suard, Emmanuelle; Irvine, John T S

2015-01-01

219

Pyroelectric properties of barium strontium titanate films: Effect of thermal M. W. Cole,2  

E-print Network

Pyroelectric properties of barium strontium titanate films: Effect of thermal stresses J. Zhang,1 M pyroelectric properties of 001 -textured polycrystalline barium strontium titanate BaxSr1-xTiO3, BST films

Alpay, S. Pamir

220

Cooling laser system for quantum computing with barium-137 ions Tom Chartrand  

E-print Network

Cooling laser system for quantum computing with barium-137 ions Tom Chartrand Department of Physics for essentially any application. We have been trapping 137-barium with this end in mind. The odd isotope has

Blinov, Boris

221

Tracking Phaselock Loop Characteristics with a VCO Using a Barium Strontium Titanate (BST)  

E-print Network

Tracking Phaselock Loop Characteristics with a VCO Using a Barium Strontium Titanate (BST) Thin University, Raleigh, NC-27695-7919,USA, Ph: +1-919-767-3277, Email: avictor@harris.com Abstract -- Barium

222

Impact of thermal strain on the dielectric constant of sputtered barium strontium titanate thin films  

E-print Network

Impact of thermal strain on the dielectric constant of sputtered barium strontium titanate thin, California 93106 Received 6 November 2001; accepted for publication 10 January 2002 Barium strontium titanate

York, Robert A.

223

Millimeter wave phase shifter based on ferromagnetic resonance in a hexagonal barium ferrite thin film  

E-print Network

Millimeter wave phase shifter based on ferromagnetic resonance in a hexagonal barium ferrite thin of an M-type barium ferrite BaM thin film prepared by pulsed laser deposition and a coplanar waveguide

224

Über die bei der Uranspaltung auftretenden kurzlebigen Barium und Lanthan-Isotope  

Microsoft Academic Search

Zusammenfassung 1. Das früher für ein primäres Spaltprodukt des Urans gehaltene sog. „14-Minuten-Barium“ wurde auch im „aktiven Niederschlag“ aus hochemanierendem Uran nachgewiesen. Es entsteht also, wie die anderen bisher bekannten Barium-Isotope, ebenfalls aus Xenon.

Otto Hahn; Fritz Strassmann

1942-01-01

225

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

226

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

227

Catalytic activity and magnetic properties of barium hexaferrite prepared from barite ore  

Microsoft Academic Search

Barium hexaferrite (BaFe12O19) has traditionally been used in permanent magnets and more recently used for high density magnetic recording. The classical ceramic method for the preparation of barium hexaferrite consists of firing mixture of chemical grade iron oxide and barium carbonate at high temperature. In this paper a mixture of chemical grade hematite, barium oxide and predetermined mixtures of iron

M. M. Hessien; M. H. Khedr

2007-01-01

228

Technical development: CT colonography without cathartic cleansing and with barium as the sole tagging agent  

Microsoft Academic Search

The purpose of this study was to perform CT colonography (CTC) without cathartic colon cleansing. Four groups of 3 patients were prepared the day before CTC with a dedicated low residue diet, a hydration control allowing 2 liters of fluid intake and barium as tagging agent. Four different barium regimens were investigated. Groups 1 and 3 ingested barium over 1

Philippe Lefere; Stefaan Gryspeerdt; Marc Baekelandt; Bartel Van Holsbeeck

2004-01-01

229

Dielectric tunability of graded barium strontium titanate multilayers: Effect of thermal strains  

E-print Network

Dielectric tunability of graded barium strontium titanate multilayers: Effect of thermal strains M TEC of a multilayered barium strontium titanate Ba1-ySryTiO3 BST ferroelectric heterostructure such as barium strontium titanate Ba1-ySryTiO3 BST have emerged as leading candidates for such applications due

Alpay, S. Pamir

230

Enhanced Sintering of Yttrium-Doped Barium Zirconate by Addition of ZnO  

E-print Network

Enhanced Sintering of Yttrium-Doped Barium Zirconate by Addition of ZnO Peter Babilo and Sossina M properties of doped barium zirconate have been examined. With the use of zinc ox- ide as a sintering aid, Ba of the material under flowing CO2 showed ZnO-modified barium zirconate to exhibit excellent chemical stability

Haile, Sossina M.

231

Spectroscopy of Ba and Ba+ deposits in solid xenon for barium tagging in  

E-print Network

Spectroscopy of Ba and Ba+ deposits in solid xenon for barium tagging in nEXO B. Mong,1, 2 S. Cook, Vermillion SD, USA (Dated: October 13, 2014) Progress on a method of barium tagging for the nEXO double beta decay experiment is reported. Absorption and emission spectra for deposits of barium atoms and ions

Gratta, Giorgio

232

Synthesis and Structural Diversity of Barium (N,N-Dimethylamino)diboranates  

E-print Network

Synthesis and Structural Diversity of Barium (N,N-Dimethylamino)diboranates Scott R. Daly, Brian J. The reaction of 1 or 1 with Lewis bases that bind more strongly to barium than diethyl ether results that several of the barium complexes are monomeric in the solid state, none is appreciably volatile up to 200

Girolami, Gregory S.

233

Influence of Ba content on grain size and dynamics of crystallization in barium ferrite thin films  

E-print Network

Influence of Ba content on grain size and dynamics of crystallization in barium ferrite thin films of the crystallization process, which ultimately determines the grain size, were studied in barium ferrite thin films. Rapid thermal annealing was used to crystallize the amorphous as-deposited barium ferrite films

Laughlin, David E.

234

A comparison between excess barium and barite as indicators of carbon export  

E-print Network

A comparison between excess barium and barite as indicators of carbon export Meagan Eagle and Adina in many paleoproductivity studies. Barite, the main carrier of particulate barium in the water column in some locations. We demonstrate that Baexcess (total barium minus the fraction associated

Paytan, Adina

235

Barium ferrite thin film media with perpendicular c-axis orientation and small grain size  

E-print Network

Barium ferrite thin film media with perpendicular c-axis orientation and small grain size Zailong, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213 Barium ferrite thin films with perpendicular c conditions. The c-axis orientation of barium ferrite thin films is most sensitive to the oxygen partial

Laughlin, David E.

236

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

Code of Federal Regulations, 2011 CFR

... 2011-10-01 2011-10-01 false Barium azide-50 percent or more water wet. 173...Other Than Class 1 and Class 7 § 173.182 Barium azide—50 percent or more water wet. Barium azide—50 percent or more water wet,...

2011-10-01

237

MNRAS 428, 32523261 (2013) doi:10.1093/mnras/sts270 Barium abundances in Cepheids  

E-print Network

MNRAS 428, 3252­3261 (2013) doi:10.1093/mnras/sts270 Barium abundances in Cepheids S. M. Andrievsky; in original form 2012 August 28 ABSTRACT We derived the barium atmospheric abundances for a large sample to 15 kpc, so it is appropriate to investigate the existence of radial barium abundance gradients

Maciel, Walter Junqueira

238

Journal of Crystal Growth 300 (2007) 330335 Growth and optical property characterization of textured barium  

E-print Network

of textured barium titanate thin films for photonic applications Matthew J. DickenÃ?, Kenneth Diest, Young. D.P. Norton Available online 21 December 2006 Abstract We have investigated the growth of barium layers on amorphous and silicon substrates. Growth of highly oriented barium titanate films

Atwater, Harry

239

Discrete Barium Strontium Titanate (BST) Thin-Film Interdigital Varactors on Alumina: Design, Fabrication, Characterization, and  

E-print Network

Discrete Barium Strontium Titanate (BST) Thin-Film Interdigital Varactors on Alumina: Design, Raleigh, NC-27695-7914, USA. Email:jayeshnath@ieee.org Abstract -- Discrete Barium Strontium Titanate (BST, capacitors, BST, ferroelectric, thin-film, barium strontium titanate, bandpass filter, IP3, ACPR, temperature

240

40 CFR 721.10010 - Barium manganese oxide (BaMnO3).  

Code of Federal Regulations, 2013 CFR

...2013-07-01 2013-07-01 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 )...

2013-07-01

241

Effect of Microwave Frequency on Hydrothermal Synthesis of Nanocrystalline Tetragonal Barium Titanate  

E-print Network

Effect of Microwave Frequency on Hydrothermal Synthesis of Nanocrystalline Tetragonal Barium, 2007; ReVised Manuscript ReceiVed: April 29, 2008 Nanocrystalline tetragonal barium titanate (BaTiO3. The dependence of properties of barium titanate on microwave frequency could be due to different transverse

Dutta, Prabir K.

242

40 CFR 721.10010 - Barium manganese oxide (BaMnO3).  

...2014-07-01 2014-07-01 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 )...

2014-07-01

243

Noncollinear Optical Frequency Doubling in Strontium Barium Niobate Arthur R. Tunyagi, Michael Ulex, and Klaus Betzler*  

E-print Network

Noncollinear Optical Frequency Doubling in Strontium Barium Niobate Arthur R. Tunyagi, Michael Ulex of a novel noncollinear optical second-harmonic generation mechanism is reported. In strontium barium niobate mechanism which we detected in crystals of strontium barium niobate (SBN)--cone-shaped second

Osnabrück, Universität

244

Spectroscopy of Eu3+ ions in congruent strontium barium niobate crystals  

E-print Network

Spectroscopy of Eu3+ ions in congruent strontium barium niobate crystals Ã?. Andresen, A.-N. Bahar properties of single crystals of strontium barium niobate, grown from the congruently melting composition, electro-optic, pho- torefractive, and dielectric properties, the solid solution strontium barium niobate

Osnabrück, Universität

245

Optogalvanic detection of barium high-lying levels with a two-step pulsed laser excitation  

E-print Network

L-513 Optogalvanic detection of barium high-lying levels with a two-step pulsed laser excitation P barium have been investigated by using a two-step pulsed laser excitation combined with an optogalvanic number for the ground state. In barium the ground level has a J = 0 value, so with a two- photon process

Boyer, Edmond

246

75 FR 36629 - Barium Chloride From the People's Republic of China: Continuation of Antidumping Duty Order  

Federal Register 2010, 2011, 2012, 2013

...Trade Administration [A-570-007] Barium Chloride From the People's Republic...revocation of the antidumping duty order on barium chloride from the People's Republic...review of the antidumping duty order on barium chloride from the PRC pursuant to...

2010-06-28

247

Processing of yttrium-doped barium zirconate for high proton conductivity  

E-print Network

Processing of yttrium-doped barium zirconate for high proton conductivity Peter Babilo Materials the transport properties of yttrium-doped barium zirconate (BYZ) have been explored, with the aim of attaining­100 nm) and high-temperature sintering (1600 °C) in the presence of excess barium were essential

248

M-type barium hexaferrite synthesis and characterization for phase shifter applications  

E-print Network

M-type barium hexaferrite synthesis and characterization for phase shifter applications A. T. Wise; published online 13 April 2011) M-type barium hexaferrite films have been grown by liquid phase epitaxy half a percent. VC 2011 American Institute of Physics. [doi:10.1063/1.3559471] Since M-type barium

McHenry, Michael E.

249

Distribution of barium in the Weddell Gyre: Impact of circulation and biogeochemical processes  

E-print Network

of barium in the Weddell Gyre: Impact of circulation and biogeochemical processes M. Hoppemaa,1 , F@vub.ac.be Key words : Barium; silicate; geochemical cycle; (Southern Ocean, Weddell Sea) Manuscript Click here barium (Bad) has been augmented significantly with two sections across the Weddell Gyre sampled

Paris-Sud XI, Université de

250

Phase associations of barium in marine sediments Meagan Eagle Gonneea *, Adina Paytan 1  

E-print Network

Phase associations of barium in marine sediments Meagan Eagle Gonneea *, Adina Paytan 1 Department 2006 Abstract Barium (Ba) is associated with various phases in marine sediments, including carbonates-export productivity. D 2005 Elsevier B.V. All rights reserved. Keywords: Barium; Barite; Marine sediment; Sedimentary

Paytan, Adina

251

Defect Chemistry of Yttrium-Doped Barium Zirconate: A Thermodynamic Analysis of Water Uptake  

E-print Network

Defect Chemistry of Yttrium-Doped Barium Zirconate: A Thermodynamic Analysis of Water Uptake-based SOFCs.3 Of known proton conducting oxides, yttrium-doped barium zirconate (BYZ) is particularly mobile species. Doping with trivalent yttrium onto the tetravalent zirconium in barium zirconate

252

Barium Titanate Nanoparticles in Block Copolymer Tu Lee,*,, Nan Yao, Hiroaki Imai,, and Ilhan A. Aksay,  

E-print Network

Barium Titanate Nanoparticles in Block Copolymer Tu Lee,*,, Nan Yao, Hiroaki Imai,, and Ilhan A-polybutadiene-polystyrene (Kraton D1102). The barium titanated Kraton thin film had remnants of the cylindrical morphology of a plain Kraton thin film with an interdomain spacing of 23 nm. The procedure of barium titanation

Aksay, Ilhan A.

253

The effect of stress on the dielectric properties of barium strontium titanate thin films  

E-print Network

The effect of stress on the dielectric properties of barium strontium titanate thin films T. M Barium strontium titanate thin films are being developed as capacitors in dynamic random access memories to their large permittivities, barium strontium titan- ate BST bulk ceramics have long been used to make high

Suo, Zhigang

254

Introduction Strontium Barium Niobate k-Space Spectroscopy Results Conclusions Unraveling Relaxor Phase Transitions by  

E-print Network

Introduction Strontium Barium Niobate k-Space Spectroscopy Results Conclusions Unraveling Relaxor 2009 WILLIAMSBURG WORKSHOP ON FUNDAMENTAL PHYSICS OF FERROELECTRICS #12;Introduction Strontium Barium ferroelectrics Introduction Strontium Barium Niobate k-Space Spectroscopy Results Conclusions SBN ­ SrxBa1-xNb2O6

Osnabrück, Universität

255

40 CFR 721.10010 - Barium manganese oxide (BaMnO3).  

Code of Federal Regulations, 2012 CFR

...2012-07-01 2012-07-01 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 )...

2012-07-01

256

Optimization of the tunability of barium strontium titanate films via epitaxial stresses  

E-print Network

Optimization of the tunability of barium strontium titanate films via epitaxial stresses Z.-G. Ban The tunability of epitaxial barium strontium titanate films is analyzed theoretically using a phenomenological.1063/1.1524310 I. INTRODUCTION Thin films of barium strontium titanate (BaxSr1 xTiO3, BST have long been recognized

Alpay, S. Pamir

257

1 Barium and carbon fluxes in the Canadian Arctic Archipelago 2 Helmuth Thomas,1  

E-print Network

1 Barium and carbon fluxes in the Canadian Arctic Archipelago 2 Helmuth Thomas,1 Elizabeth Shadwick Barium (Ba) in the Amundsen Gulf, 8 southeastern Beaufort Sea, was monitored over a full year from observed at river mouths, the lowest concentrations are found in water 12 masses of Atlantic origin. Barium

Boyer, Edmond

258

Structure evolution and dielectric behavior of polystyrene-capped barium titanate nanoparticles  

E-print Network

Structure evolution and dielectric behavior of polystyrene-capped barium titanate nanoparticles H35600g Polystyrene-capped barium titanate (BaTiO3) nanoparticles with sizes of 11 nm and 27 nm were nanocrystals. 1. Introduction Barium titanate (BaTiO3), one of the most commonly used perovskite compounds

Lin, Zhiqun

259

PHYSICAL REVIEW A 88, 023403 (2013) Production of translationally cold barium monohalide ions  

E-print Network

PHYSICAL REVIEW A 88, 023403 (2013) Production of translationally cold barium monohalide ions M. V) We have produced sympathetically cooled barium monohalide ions BaX+ (X = F, Cl, Br) by reacting with these predictions. Producing BaX+ ions in this way is simple and allows for the study of different barium monohalide

Chapman, Michael

260

PHYSICAL REVIEW A 81, 052328 (2010) Hyperfine and optical barium ion qubits  

E-print Network

PHYSICAL REVIEW A 81, 052328 (2010) Hyperfine and optical barium ion qubits M. R. Dietrich,* N these profoundly quantum systems. Despite a long history in ion trapping [3­5], barium has never previously been a natural source without isotope-selective ionization [6,7]. Barium possesses a long-lived metastable state

Blinov, Boris

261

Nanoscale Patterning of Barium Titanate on Block Tu Lee,, Nan Yao, and Ilhan A. Aksay*,,  

E-print Network

Nanoscale Patterning of Barium Titanate on Block Copolymers Tu Lee,, Nan Yao, and Ilhan A. Aksay of polystyrene-polybutadiene-polystyrene (Kraton D1102) has been used to pattern barium titanate precursor on the unsaturated carbon bonds in the polybutadiene matrix with antistereochemistry. Anchoring the barium titanate

Aksay, Ilhan A.

262

Barium Ion Extraction and Identification from Laser Induced Fluorescence in Gas for the  

E-print Network

Barium Ion Extraction and Identification from Laser Induced Fluorescence in Gas for the Enriched the barium ion daughter from the double beta decay of xenon-136 using laser induced fluorescence. The technique is very complex and requires an excellent understanding of the barium ion spectroscopy and its

Wechsler, Risa H.

263

TEE BARIUM CONTENT IN THE CALCAREOUS SKELETAL MATERTALS OF SOME RECENT AND  

E-print Network

TEE BARIUM CONTENT IN THE CALCAREOUS SKELETAL MATERTALS OF SOME RECENT AND FOSSIL CORALS known mlxtures of the 'vrlo m inerals. Ion-exchange methods hrere utllized to separate barium from on ln the Ilvlng eorals varled from 5- 2 + IOS ppn, to L2.5 + 6.1+% ppr. ThtB varJ-atlon ln barium

Luther, Douglas S.

264

Phase diagrams and dielectric response of epitaxial barium strontium titanate films: A theoretical analysis  

E-print Network

Phase diagrams and dielectric response of epitaxial barium strontium titanate films: A theoretical for publication 7 March 2002 We develop phase diagrams for single-domain epitaxial barium strontium titanate films. DOI: 10.1063/1.1473675 I. INTRODUCTION Thin films of barium strontium titanate BaxSr1 xTiO3 ,(BST

Alpay, S. Pamir

265

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...Other Than Class 1 and Class 7 § 173.182 Barium azide—50 percent or more water wet. Barium azide—50 percent or more water wet,...

2010-10-01

266

Compact high power barium nitrite crystal-based Raman laser at 1197 nm  

E-print Network

Compact high power barium nitrite crystal-based Raman laser at 1197 nm for photoacoustic imaging of fat Rui Li Mikhail N. Slipchenko Pu Wang Ji-Xin Cheng #12;Compact high power barium nitrite crystal such a barrier, we demonstrate the construction and use of a com- pact, barium nitrite crystal-based Raman laser

Cheng, Ji-Xin

267

40 CFR 721.10010 - Barium manganese oxide (BaMnO3).  

Code of Federal Regulations, 2011 CFR

...2011-07-01 2011-07-01 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 )...

2011-07-01

268

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

269

Fabrication, characterization and microwave properties of polyurethane nanocomposites reinforced with iron oxide and barium titanate  

E-print Network

with iron oxide and barium titanate nanoparticles Z. Guo a,*, S.-E. Lee a , H. Kim a , S. Park a , H.T. Hahn (PU) nanocomposites reinforced with magnetic iron oxide nanoparticles and/or dielectric barium the introduction of the dielectric barium titanate nanoparticle into Fe2O3/PU nanocomposites. The permeability

Guo, John Zhanhu

270

Optimization of High Tunability Barium Strontium Titanate Thin Films Grown by RF Magnetron  

E-print Network

Optimization of High Tunability Barium Strontium Titanate Thin Films Grown by RF Magnetron Abstract-- Barium strontium titanate is a solid solution perovskite with a field-dependent permittivity.7 MV/cm. I. INTRODUCTION In recent years there has been much interest in thin-film barium strontium

York, Robert A.

271

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

Code of Federal Regulations, 2013 CFR

... 2013-10-01 2013-10-01 false Barium azide-50 percent or more water wet. 173...Other Than Class 1 and Class 7 § 173.182 Barium azide—50 percent or more water wet. Barium azide—50 percent or more water wet,...

2013-10-01

272

Single-crystal barium titanate thin films by ion slicing T. Izuhara,a)  

E-print Network

Single-crystal barium titanate thin films by ion slicing T. Izuhara,a) I.-L. Gheorma, and R. M, D.C. 20052 Received 19 September 2002; accepted 3 December 2002 Thin barium titanate films, 0.5­8 m.1063/1.1540727 Barium titanate, BaTiO3 BTO , is a ferroelectric crystal whose outstanding electrical and optical

Reeves, Mark E.

273

M-type barium hexaferrite synthesis and characterization for phase shifter applications  

E-print Network

M-type barium hexaferrite synthesis and characterization for phase shifter applications A. T. Wise subject to AIP license or copyright; see http://jap.aip.org/about/rights_and_permissions #12;M-type barium-type barium hexaferrite films have been grown by liquid phase epitaxy and examined by x-ray diffraction

Laughlin, David E.

274

Microwave dielectric properties of graded barium strontium titanate films M. W. Cole,1,a  

E-print Network

Microwave dielectric properties of graded barium strontium titanate films M. W. Cole,1,a C. V Received 8 April 2008; accepted 13 April 2008; published online 8 May 2008 Compositionally graded barium, delay lines, filters, and phase shifters for steerable antennas.1­3 Barium strontium titanate BaxSr1-x

Alpay, S. Pamir

275

Journal of Crystal Growth 271 (2004) 128133 Growth of strontium barium niobate  

E-print Network

Journal of Crystal Growth 271 (2004) 128­133 Growth of strontium barium niobate: the liquidus. Roth Available online 11 September 2004 Abstract The liquidus­solidus phase diagram of strontium barium, and dielectric properties, strontium barium niobate, SrxBa1�xNb2O6--hen- ceforth denoted as SBN, is one

Osnabrück, Universität

276

High tunability barium strontium titanate thin films for rf circuit applications  

E-print Network

High tunability barium strontium titanate thin films for rf circuit applications N. K. Pervez,a) P) Large variations in the permittivity of rf magnetron sputtered thin-film barium strontium titanate have/cm. © 2004 American Institute of Physics. [DOI: 10.1063/1.1818724] Barium strontium titanate (BST) is a solid

York, Robert A.

277

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

278

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

... 2014-10-01 2014-10-01 false Barium azide-50 percent or more water wet. 173...Other Than Class 1 and Class 7 § 173.182 Barium azide—50 percent or more water wet. Barium azide—50 percent or more water wet,...

2014-10-01

279

Single-Crystalline Barium Titanate By Jeffrey J. Urban, Jonathan E. Spanier, Lian Ouyang,  

E-print Network

Single-Crystalline Barium Titanate Nanowires By Jeffrey J. Urban, Jonathan E. Spanier, Lian Ouyang composed of barium titanate (BaTiO3), a prototypical displacive ferroelectric material[14,15] that yields-volatile memory devices with an integration density approaching 1 terabit cm±2 . 2. Synthesis of Barium Titanate

Heller, Eric

280

Prompt ionization in the CRIT II barium releases  

NASA Astrophysics Data System (ADS)

Observations of electron and ion distributions inside a fast neutral barium jet in the ionosphere show significant fluxes within 4 km of release, presumably related to beam plasma instability processes involved in the Critical Ionization Velocity (CIV) effect. Electron fluxes exceeding 5 x 10 exp 12/sq cm-str-sec-keV were responsible for ionizing both the streaming barium and ambient oxygen. Resulting ion fluxes seem to be consistent with 1-2 percent ionization of the fast barium, as reported by optical observations, although the extended spatial distribution of the optically observed ions is difficult to reconcile with the in situ observations. When the perpendicular velocity of the neutrals falls below critical values, these processes shut off. Although these observations resemble the earlier Porcupine experimental results (Haerendel, 1982), theoretical understanding of the differences between these data and that of earlier negative experiments is still lacking.

Torbert, R. B.; Kletzing, C. A.; Liou, K.; Rau, D.

1992-05-01

281

Outpatient treatment costs and their potential impact on cancer care  

PubMed Central

Cancer creates a tremendous financial burden. Cancer-related costs are categorized into direct, indirect, and psychosocial costs. Although there have been many reports on medical care costs, which are direct, those on other costs are extremely scarce. We estimated travel time and costs required for cancer patients to receive outpatient treatment. We studied 521 cancer patients receiving anti-cancer treatment between February 2009 and December 2012 at the Outpatient Chemotherapy Center of Teikyo University Chiba Medical Center. Address data were extracted from Data Warehouse electronic medical records, and travel distance and time required for outpatient treatment were calculated via MapInfo and ACT Distance Calculator Package. Transportation costs were estimated on the basis of ¥274 (=$3.00) per kilometer. The study design was approved by an ethics review board of Teikyo University (12–851). Average round-trip travel distance, time, and cost for all patients were 26.7 km, 72.5 min, and ¥7,303 ($79.99), respectively. Cancer patients incurred a travel cost of ¥4000–¥9000 ($40.00 to $100.00) for each outpatient treatment. With population aging, seniors living alone and senior households are increasing, and outpatient visits are becoming a common burden. PMID:25060622

Isshiki, Takahiro

2014-01-01

282

Comparison of antibiograms developed for inpatients and primary care outpatients.  

PubMed

To support antimicrobial stewardship, some healthcare systems have begun creating outpatient antibiograms. We developed inpatient and primary care outpatient antibiograms for a regional health maintenance organization (HMO) and academic healthcare system (AHS). Antimicrobial susceptibilities from 16,428 Enterococcus, Staphylococcus aureus, Escherichia coli, Klebsiella pneumoniae, and Pseudomonas aeruginosa cultures from 2010 were summarized and compared. Methicillin susceptibility among S. aureus was similar in inpatients and primary care outpatients (HMO: 61.2% versus 61.9%, P = 0.951; AHS: 62.9% versus 63.3%, P > 0.999). E. coli susceptibility to trimethoprim/sulfamethoxazole was also similar (HMO: 81.8% versus 83.6%, P = 0.328; AHS: 77.2% versus 80.9%, P = 0.192), but ciprofloxacin susceptibility differed (HMO: 88.9% versus 94.6%, P < 0.001; AHS: 81.2% versus 90.6%, P < 0.001). In the HMO, ciprofloxacin-susceptible P. aeruginosa were more frequent in primary care outpatients than in inpatients (91.4% versus 79.0%, P = 0.007). Comparison of cumulative susceptibilities across settings yielded no consistent patterns; therefore, outpatient primary care antibiograms may more accurately inform prudent empiric antibiotic prescribing. PMID:23541690

McGregor, Jessina C; Bearden, David T; Townes, John M; Sharp, Susan E; Gorman, Paul N; Elman, Miriam R; Mori, Motomi; Smith, David H

2013-05-01

283

Outpatient treatment costs and their potential impact on cancer care.  

PubMed

Cancer creates a tremendous financial burden. Cancer-related costs are categorized into direct, indirect, and psychosocial costs. Although there have been many reports on medical care costs, which are direct, those on other costs are extremely scarce. We estimated travel time and costs required for cancer patients to receive outpatient treatment. We studied 521 cancer patients receiving anti-cancer treatment between February 2009 and December 2012 at the Outpatient Chemotherapy Center of Teikyo University Chiba Medical Center. Address data were extracted from Data Warehouse electronic medical records, and travel distance and time required for outpatient treatment were calculated via MapInfo and ACT Distance Calculator Package. Transportation costs were estimated on the basis of ¥274 (=$3.00) per kilometer. The study design was approved by an ethics review board of Teikyo University (12-851). Average round-trip travel distance, time, and cost for all patients were 26.7 km, 72.5 min, and ¥7,303 ($79.99), respectively. Cancer patients incurred a travel cost of ¥4000-¥9000 ($40.00 to $100.00) for each outpatient treatment. With population aging, seniors living alone and senior households are increasing, and outpatient visits are becoming a common burden. PMID:25060622

Isshiki, Takahiro

2014-12-01

284

Barium Levels in Soils and Centella asiatica  

PubMed Central

In this study, Centella asiatica and surface soils were collected from 12 sampling sites in Peninsular Malaysia, and the barium (Ba) concentrations were determined. The Ba concentration [?g/g dry weight (dw)] was 63.72 to 382.01 ?g/g in soils while in C. asiatica, Ba concentrations ranged from 5.05 to 21.88 ?g/g for roots, 3.31 to 11.22 ?g/g for leaves and 2.37 to 6.14 ?g/g for stems. In C. asiatica, Ba accumulation was found to be the highest in roots followed by leaves and stems. The correlation coefficients (r) of Ba between plants and soils were found to be significantly positively correlated, with the highest correlation being between roots-soils (r=0.922, p<005), followed by leaves-soils (r=0.890, p<005) and stems-soils (r=0.848, p<005). This indicates that these three parts of C. asiatica are good biomonitors of Ba pollution. For the transplantation study, four sites were selected as unpolluted [(Universiti Putra Malaysia (UPM)], semi-polluted (Seri Kembangan and Balakong) and polluted sites (Juru). Based on the transplantation study under experimental field and laboratory conditions, Ba concentrations in C. asiatica were significantly (p<0.05) higher after three weeks of exposure at Seri Kembangan, Balakong and Juru. Thus, these experimental findings confirm that the leaves, stems and roots of C. asiatica can reflect the Ba levels in the soils where this plant is found. Three weeks after back transplantation to clean soils, the Ba levels in C. asiatica were still higher than the initial Ba level even though Ba elimination occurred. In conclusion, the leaves, stems and roots of C. asiatica are good biomonitors of Ba pollution. PMID:24575242

Ong, Ghim Hock; Yap, Chee Kong; Mahmood, Maziah; Tan, Soon Guan; Hamzah, Suhaimi

2013-01-01

285

Selectivity in biomineralization of barium and strontium.  

PubMed

The desmid green alga Closterium moniliferum belongs to a small number of organisms that form barite (BaSO(4)) or celestite (SrSO(4)) biominerals. The ability to sequester Sr in the presence of an excess of Ca is of considerable interest for the remediation of (90)Sr from the environment and nuclear waste. While most cells dynamically regulate the concentration of the second messenger Ca(2+) in the cytosol and various organelles, transport proteins rarely discriminate strongly between Ca, Sr, and Ba. Herein, we investigate how these ions are trafficked in C. moniliferum and how precipitation of (Ba,Sr)SO(4) crystals occurs in the terminal vacuoles. Towards this goal, we simultaneously visualize intracellular dynamics of multiple elements using X-ray fluorescence microscopy (XFM) of cryo-fixed/freeze-dried samples. We correlate the resulting elemental maps with ultrastructural information gleaned from freeze-fracture cryo-SEM of frozen-hydrated cells and use micro X-ray absorption near edge structure (micro-XANES) to determine sulfur speciation. We find that the kinetics of Sr uptake and efflux depend on external Ca concentrations, and Sr, Ba, and Ca show similar intracellular localization. A highly ion-selective cross-membrane transport step is not evident. Based on elevated levels of sulfate detected in the terminal vacuoles, we propose a "sulfate trap" model, where the presence of dissolved barium leads to preferential precipitation of (Ba,Sr)SO(4) due to its low solubility relative to SrSO(4) and CaSO(4). Engineering the sulfate concentration in the vacuole may thus be the most direct way to increase the Sr sequestered per cell, an important consideration in using desmids for phytoremediation of (90)Sr. PMID:21871966

Krejci, Minna R; Wasserman, Brian; Finney, Lydia; McNulty, Ian; Legnini, Daniel; Vogt, Stefan; Joester, Derk

2011-11-01

286

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

287

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

288

Photoionization and Photoelectric Loading of Barium Ion Traps  

E-print Network

Simple and effective techniques for loading barium ions into linear Paul traps are demonstrated. Two-step photoionization of neutral barium is achieved using a weak intercombination line (6s2 1S0 6s6p 3P1, 791 nm) followed by excitation above the ionization threshold using a nitrogen gas laser (337 nm). Isotopic selectivity is achieved by using a near Doppler-free geometry for excitation of the triplet 6s6p 3P1 state. Additionally, we report a particularly simple and efficient trap loading technique that employs an in-expensive UV epoxy curing lamp to generate photoelectrons.

A. V. Steele; L. R. Churchill; P. F. Griffin; M. S. Chapman

2007-03-22

289

[Mutagen activity of barium chloride in Salmonella typhimurium].  

PubMed

Barium chloride, which is an important industrial chemical used in pigments, lacquers, dyes, glass and pesticide production, leather tanning and cloth dying, was tested on Salmonella typhimurium (TA 1535, TA 1537, TA 1538, TA 97, TA 98, TA 100) with the reverse mutation test, with and without metabolic activation, to assess its possible genotoxic effects and any possible action with respect to standard mutagens (sodium azide, 9-aminoacridine, 2-nitrofluorene, mitomycine-C, 2 aminoacridine). Using the platelet incorporation technique, barium chloride at various progressive concentrations gave negative results under the experimental conditions of the study. PMID:2199807

Monaco, M; Dominici, R; Barisano, P; Di Palermo, G

1990-01-01

290

Methods for producing monodispersed particles of barium titanate  

DOEpatents

The present invention is a low-temperature controlled method for producing high-quality, ultrafine monodispersed nanocrystalline microsphere powders of barium titanate and other pure or composite oxide materials having particles ranging from nanosized to micronsized particles. The method of the subject invention comprises a two-stage process. The first stage produces high quality monodispersed hydrous titania microsphere particles prepared by homogeneous precipitation via dielectric tuning in alcohol-water mixed solutions of inorganic salts. Titanium tetrachloride is used as an inorganic salt precursor material. The second stage converts the pure hydrous titania microsphere particles into crystalline barium titanate microsphere powders via low-temperature, hydrothermal reactions.

Hu, Zhong-Cheng (Knoxville, TN)

2001-01-01

291

Growth and characterization of barium ferrite films grown using PECVD  

NASA Astrophysics Data System (ADS)

Deposition of c-axis perpendicularly oriented barium ferrite (BaFe12O19) films was attempted by means of plasma enhanced chemical vapor deposition (PECVD). A substituted acetylacetonate barium complex has been used with ferrocene in a PECVD system to deposit films of BaFe12O19. These films were examined for crystallinity, composition and magnetic properties. The crystallinity was measured by x-ray diffraction (XRD), the composition was found using scanning electron microscopy (SEM) and energy dispersive analysis of x-rays (EDAX) and the magnetic properties using vibrating sample magnetometry (VSM).

Padmanabhan, Radhakrishnan; Marji, Ehab; Kranov, Yanko; Zhang, Daqing; McIlroy, David N.

2004-05-01

292

[Diagnostic Spectrum and Filtration Function of Outpatient Sleep Clinics  

PubMed

In a prospective study all first admittances into the outpatient sleep clinics of the Bezirksklinikum Regensburg and the BKH Wöllershof within 6 months were studied. Data of 212 patients (66 % men, median age 51 years, ages from 7 to 88 years) were collected and evaluated. In over 40 % of the cases the symptoms had persisted for more than 5 years. The most common main diagnoses were: obstructive sleep apnea (34 %), psychophysiological insomnia (21 %), restless-legs-syndrome including periodic leg movement in sleep (15 %) and sleeping disorders in the context of affective disorders (8,5 %). After ambulatory diagnostics 56 % were referred to the sleep laboratory within the same hospital, 5 % were referred to other sleep laboratories, 22 % were treated on an outpatient basis, 7,5 % received somatic or psychiatric treatment and only 7 % of the patients did not need further treatment. Therefore the function of an outpatient sleep clinic as a filter for further treatment can be proven. PMID:13130367

Zörner, Dominik; Geisler, Peter

2003-05-01

293

Outpatient percutaneous coronary intervention: Ready for prime time?  

PubMed Central

Outpatient practice after percutaneous coronary intervention (PCI) is gaining momentum due to constantly optimizing results. Furthermore, the availability of limited beds to handle the large volume of coronary interventions also promotes outpatient practice. The present report relates the current experience with same-day discharge and defines persisting challenges in promoting accelerated in-hospital turnover. Since the mid-1990s, there have been several reports on same-day discharge following uncomplicated procedures. Overall, the success of outpatient PCI practice is based on a few technological and pharmacological advances. First, the systematic use of stents and potent antiplatelet agents have revolutionized the acute success rates of PCI by virtually eliminating the risks of acute vessel closure within the first 24 h following a successful procedure. Second, the miniaturization of catheter sizes has also simplified access site management, accelerated ambulation time and limited the risks of puncture site bleeding. In this regard, the transradial approach initially described in Canada and later popularized in Europe has transformed the acute care of patients after PCI. Today, however, the practice of transradial PCI still varies largely from country to country. From the literature review, it appears that after a short period of observation (4 h to 6 h), the majority of eligible patients who have undergone uncomplicated coronary stenting can be discharged on the same day. Whereas implementation of same-day discharge to referring centres is simple, home discharge requires the development of structured outpatient programs with dedicated resources to assist the patient and family with short-term logistics, to provide reassurance, to serve as a ‘safety net’ and, lastly, to promote medication compliance and cardiovascular risk factor management. Further studies are required to better define the cost-minimization effects of outpatient PCI practice, as well as patient perception of fast-track PCI. It is proposed that outpatient PCI will likely continue to expand over the next decade. PMID:17932589

Bertrand, Olivier F; Larose, Eric; De Larochellière, Robert; Proulx, Guy; Nguyen, Can Manh; Déry, Jean-Pierre; Gleeton, Onil; Barbeau, Gérald; Noël, Bernard; Rouleau, Jacques; Boudreault, Jean-Roch; Roy, Louis; Rodés-Cabau, Josep

2007-01-01

294

Ferroelastic domains in lead-free barium zirconate titanate - barium calcium titanate piezoceramics  

NASA Astrophysics Data System (ADS)

Piezoelectricity was first discovered by Pierre and Jaque Curie in the year 1880. Nowadays, piezoelectric materials are used in many application such as high voltage generation in gas igniters, actuation in micro-positioning devices, generation and detection of acoustic waves, emitters and receivers for sonar technology, ultrasonic cleaning, ultrasound medical therapy, and micropumps for ink-jet printers. The most commonly used piezoelectric material since the 1950's is the solid solution system lead zirconate titanate (PZT) that offers high piezoelectric performance under a large range of operating conditions. However, the toxicity of lead requires the replacement of PZT. The studied lead-free alternatives are commonly based on potassium sodium niobate (KNN) and bismuth sodium titanate (BNT), and more recently zirconium and calcium substituted barium titanate (BZT-BCT). The BZT-BCT system exhibits large piezoelectric coefficients that can exceed even those of most PZT compositions under certain conditions. Piezoelectricity was first discovered by Pierre and Jaque Curie in the year 1880. Nowadays, piezoelectric materials are used in many application such as high voltage generation in gas igniters, actuation in micro-positioning devices, generation and detection of acoustic waves, emitters and receivers for sonar technology, ultrasonic cleaning, ultrasound medical therapy, and micropumps for ink-jet printers. The most commonly used piezoelectric material since the 1950's is the solid solution system lead zirconate titanate (PZT) that offers high piezoelectric performance under a large range of operating conditions. However, the toxicity of lead requires the replacement of PZT. The studied lead-free alternatives are commonly based on potassium sodium niobate (KNN) and bismuth sodium titanate (BNT), and more recently zirconium and calcium substituted barium titanate (BZT-BCT). The BZT-BCT system exhibits large piezoelectric coefficients that can exceed even those of most PZT compositions under certain conditions.

Ehmke, Matthias Claudius

295

Outpatient prescribing errors and the impact of computerized prescribing  

Microsoft Academic Search

BACKGROUND: Medication errors are common among inpatients and many are preventable with computerized prescribing. Relatively little is\\u000a known about outpatient prescribing errors or the impact of computerized prescribing in this setting.\\u000a \\u000a \\u000a OBJECTIVE: To assess the rates, types, and severity of outpatient prescribing errors and understand the potential impact of computerized\\u000a prescribing.\\u000a \\u000a \\u000a \\u000a \\u000a DESIGN: Prospective cohort study in 4 adult primary care

Tejal K. Gandhi; Saul N. Weingart; Andrew C. Seger; Joshua Borus; Elisabeth Burdick; Eric G. Poon; Lucian L. Leape; David W. Bates

2005-01-01

296

Photoselective vaporization of the prostate in office and outpatient settings.  

PubMed

The 980 nm/1470 nm diode laser represents the latest in laser technology for photovaporization of the prostate. Surgeons have already used this device in both inpatient and outpatient (office and ASC) setting to produce transurethral resection of the prostate (TURP) like lesions-albeit with fewer complications than traditional methods. The objective of this article is to report the techniques we used to demonstrate its efficacy and safety of the Evolve Dual (biolitec Inc., East Longmeadow, MA, USA) system in an outpatient surgery type setting. PMID:22512971

Rosenthal, Brian D; DiTrolio, Joseph V

2012-04-01

297

Extensions to the spectrum of singly ionized barium /Ba II/  

NASA Technical Reports Server (NTRS)

The spectrum of singly ionized barium has been studied in absorption by flash pyrolysis. Corrected wavelengths and energy levels have been obtained. Fifteen new levels have been established and 24 new lines have been observed. Photoionization is shown to be the dominant ionization mechanism in this technique.

Roig, R. A.; Tondello, G.

1975-01-01

298

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

299

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 ...

300

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 ...

301

Giant coercivity of dense nanostructured spark plasma sintered barium hexaferrite  

E-print Network

of easy axes. Several authors have succeed to produce BaFe12O19 nanoparti- cles by soft chemical route step7,8 . II. EXPERIMENTAL DETAILS Barium hexaferrite powders have been prepared by a sol-gel citrate and dense material together. In this paper, it is shown that the spark plasma sintering method (SPS) is able

302

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 ...

303

Ferroelectricity, Domain Structure, and Phase Transitions of Barium Titanate  

Microsoft Academic Search

A summarizing account is given of the research on barium titanate in progress at the Laboratory for Insulation Research at M. I. T. since 1943. The investigations have led to an understanding of the mechanism of ferroelectricity in the titanates and to discoveries such as the piezoelectric effect in the ceramics and the domain structure of the single crystals of

A. von Hippel

1950-01-01

304

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...

305

76 FR 78281 - Medicare Program; First Semi-Annual Meeting of the Advisory Panel on Hospital Outpatient Payment...  

Federal Register 2010, 2011, 2012, 2013

...DEPARTMENT OF HEALTH AND HUMAN...the Advisory Panel on Hospital Outpatient Payment...the Advisory Panel on Hospital Outpatient Payment...the Secretary of the Department of Health and Human...associated weights, and hospital outpatient...

2011-12-16

306

77 FR 31366 - Medicare Program; Semi-Annual Meeting of the Advisory Panel on Hospital Outpatient Payment (HOP...  

Federal Register 2010, 2011, 2012, 2013

...DEPARTMENT OF HEALTH AND HUMAN...the Advisory Panel on Hospital Outpatient Payment...the Advisory Panel on Hospital Outpatient Payment...the Secretary of the Department of Health and Human...associated weights, and hospital outpatient...

2012-05-25

307

77 FR 70447 - Medicare Program; Semi-Annual Meeting of the Advisory Panel on Hospital Outpatient Payment (HOP...  

Federal Register 2010, 2011, 2012, 2013

...DEPARTMENT OF HEALTH AND HUMAN...the Advisory Panel on Hospital Outpatient Payment...the Advisory Panel on Hospital Outpatient Payment...the Secretary of the Department of Health and Human...associated weights, and hospital outpatient...

2012-11-26

308

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

...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...

2014-10-01

309

76 FR 72003 - Calendar Year 2011 Cost of Outpatient Medical, Dental, and Cosmetic Surgery Services Furnished by...  

Federal Register 2010, 2011, 2012, 2013

...Outpatient Medical, Dental, and Cosmetic Surgery Services Furnished by Department of Defense...outpatient medical, dental, and cosmetic surgery services furnished by military treatment...outpatient medical, dental, and cosmetic surgery services rates referenced are...

2011-11-21

310

78 FR 62709 - Calendar Year 2013 Cost of Outpatient Medical, Dental, and Cosmetic Surgery Services Furnished by...  

Federal Register 2010, 2011, 2012, 2013

...Outpatient Medical, Dental, and Cosmetic Surgery Services Furnished by Department of Defense...outpatient medical, dental and cosmetic surgery services furnished by military treatment...Outpatient Medical, Dental, and Cosmetic Surgery rates referenced are effective upon...

2013-10-22

311

42 CFR 410.141 - Outpatient diabetes self-management training.  

Code of Federal Regulations, 2012 CFR

...2012-10-01 2012-10-01 false Outpatient diabetes self-management training. 410.141 ...MEDICAL INSURANCE (SMI) BENEFITS Outpatient Diabetes Self-Management Training and Diabetes Outcome Measurements § 410.141...

2012-10-01

312

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

313

42 CFR 410.141 - Outpatient diabetes self-management training.  

...2014-10-01 2014-10-01 false Outpatient diabetes self-management training. 410.141 ...MEDICAL INSURANCE (SMI) BENEFITS Outpatient Diabetes Self-Management Training and Diabetes Outcome Measurements § 410.141...

2014-10-01

314

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

315

42 CFR 410.141 - Outpatient diabetes self-management training.  

Code of Federal Regulations, 2011 CFR

...2011-10-01 2011-10-01 false Outpatient diabetes self-management training. 410.141 ...MEDICAL INSURANCE (SMI) BENEFITS Outpatient Diabetes Self-Management Training and Diabetes Outcome Measurements § 410.141...

2011-10-01

316

42 CFR 410.28 - Hospital or CAH diagnostic services furnished to outpatients: Conditions.  

Code of Federal Regulations, 2010 CFR

...on-campus outpatient department of the hospital, as defined in § 413...off-campus outpatient department of the hospital, as defined in § 413.65...off-campus provider-based department of the hospital and immediately...

2010-10-01

317

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

318

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

...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...

2014-10-01

319

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

320

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

321

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

322

Preliminary study of the CRRES magnetospheric barium releases  

NASA Technical Reports Server (NTRS)

Preliminary theoretical and computational analyses of the Combined Release and Radiation Effects Satellite (CRRES) magnetospheric barium releases are presented. The focus of the studies is on the evolution of the diamagnetic cavity which is formed by the barium ions as they expand outward, and on the structuring of the density and magnetic field during the expansion phase of the releases. Two sets of simulation studies are discussed. The first set is based upon a 2D ideal MHD code and provides estimates of the time and length scales associated with the formation and collapse of the diamagnetic cavity. The second set uses a nonideal MHD code; specifically, the Hall term is included. This additional term is critical to the dynamics of sub-Alfvenic plasma expansions, such as the CRRES barium releases, because it leads to instability of the expanding plasma. Detailed simulations of the G4 and G10 releases were performed. In both cases the expanding plasma rapidly structured: the G4 release structured at time t less than about 3 s and developed scale sizes of about 1-2 km, while the G10 release structured at time t less than about 22 s and developed scale sizes of about 10-15 km. It is also found that the diamagnetic cavity size is reduced from those obtained from the ideal MHD results because of the structure. On the other hand, the structuring allows the formation of plasma blobs which appear to free stream across the magnetic field; thus, the barium plasma can propagate to larger distances traverse to the magnetic field than the case where no structuring occurs. Finally, a new normal mode of the system was discovered which may be excited at the leading edge of the expanding barium plasma.

Huba, J. D.; Bernhardt, P. A.; Lyon, J. G.

1992-01-01

323

42 CFR 410.60 - Outpatient physical therapy services: Conditions.  

...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, a CAH, or a SNF. (iv) Treat individuals who are...

2014-10-01

324

42 CFR 410.59 - Outpatient occupational therapy services: Conditions.  

...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...

2014-10-01

325

Outpatient Treatment of Primary Anorexia Nervosa in Adult Males.  

ERIC Educational Resources Information Center

Describes three cases of adult-onset primary anorexia nervosa in males. For each case, the history and diagnostic patterns are considered, followed by a discussion of the course of outpatient treatment. The therapy was multimodal and included elements of behavioral contingency management, cognitive therapy, and dynamic psychotherapy. (JAC)

Ziesat, Harold A., Jr.; Ferguson, James M.

1984-01-01

326

Congestive heart failure and outpatient risk of venous thromboembolism  

Microsoft Academic Search

Although CHF has been considered a risk factor for venous thromboembolism, this has not been directly studied. We hypothesized that congestive heart failure would increase the risk of venous thromboembolism in an outpatient population, and that this risk would increase as patients' ventricular function worsened. We conducted a case-control study to examine whether CHF due to left ventricular dysfunction was

M. D. Howell; J. M. Geraci; A. A. Knowlton

2001-01-01

327

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

328

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

329

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

330

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

331

Patient Satisfaction in Malaysia's Busiest Outpatient Medical Care  

PubMed Central

This study aimed to explore factors associated with patient satisfaction of outpatient medical care in Malaysia. A cross-sectional exit survey was conducted among 340 outpatients aged between 13 and 80 years after successful clinical consultations and treatment acquirements using convenience sampling at the outpatient medical care of Tengku Ampuan Rahimah Hospital (HTAR), Malaysia, being the country's busiest medical outpatient facility. A survey that consisted of sociodemography, socioeconomic, and health characteristics and the validated Short-Form Patient Satisfaction Questionnaire (PSQ-18) scale were used. Patient satisfaction was the highest in terms of service factors or tangible priorities, particularly “technical quality” and “accessibility and convenience,” but satisfaction was low in terms of service orientation of doctors, particularly the “time spent with doctor,” “interpersonal manners,” and “communication” during consultations. Gender, income level, and purpose of visit to the clinic were important correlates of patient satisfaction. Effort to improve service orientation among doctors through periodical professional development programs at hospital and national level is essential to boost the country's health service satisfaction. PMID:25654133

Perianayagam, Wilson; Abdul Manaf, Rizal; Ali Jadoo, Saad Ahmed; Al-Dubai, Sami Abdo Radman

2015-01-01

332

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

333

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

334

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

335

42 CFR 410.59 - Outpatient occupational therapy services: Conditions.  

Code of Federal Regulations, 2013 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...

2013-10-01

336

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

337

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

338

42 CFR 410.60 - Outpatient physical 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, a CAH, or a SNF. (iv) Treat individuals who are...

2012-10-01

339

42 CFR 410.60 - Outpatient physical 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, a CAH, or a SNF. (iv) Treat individuals who are...

2010-10-01

340

42 CFR 410.60 - Outpatient physical 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, a CAH, or a SNF. (iv) Treat individuals who are...

2011-10-01

341

42 CFR 410.60 - Outpatient physical therapy services: Conditions.  

Code of Federal Regulations, 2013 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, a CAH, or a SNF. (iv) Treat individuals who are...

2013-10-01

342

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

343

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

344

A computer-based outpatient clinical referral system  

Microsoft Academic Search

The process of generating a clinical referral for a patient, and the resulting transfer of information from the primary care physician to the specialist and back again, are key components in the struggle to deliver less costly and more effective clinical care. We have created a computer-based, outpatient clinical referral application that facilitates: (1) identifying an appropriate specialist; (2) collecting

Dean F Sittig; Tejal K Gandhi; Michael Franklin; Masha Turetsky; Andrew J Sussman; David G Fairchild; David W Bates; Anthony L Komaroff; Jonathan M Teich

1999-01-01

345

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

346

Forensic psychiatric outpatients with sexual offences: Personality characteristics, aggression and social competence  

Microsoft Academic Search

For greater insight into the personality characteristics and problem behaviours of Dutch sexually violent forensic psychiatric outpatients, a group of 105 sexually violent and a group of 69 non-sexually violent outpatients were studied. All had been required by the court to undergo treatment. It was found that together all outpatients scored higher than normal subjects on the neuroticism personality domain

Ruud H. J. Hornsveld; Cindy De Kruyk

2005-01-01

347

Factors Associated with Deliberate Self-Harm Behaviour among Depressed Adolescent Outpatients  

ERIC Educational Resources Information Center

This study examined whether depressed adolescent outpatients with deliberate self-harm behaviour (DSH) differed from non-suicidal depressed adolescent outpatients in depressive and anxiety symptoms, alcohol use, perceived social support and number of negative life-events. Depressed adolescent outpatients (n = 155) aged 13-19 years were interviewed…

Tuisku, Virpi; Pelkonen, Mirjami; Kiviruusu, Olli; Karlsson, Linnea; Ruuttu, Titta; Marttunen, Mauri

2009-01-01

348

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

Code of Federal Regulations, 2011 CFR

...2011-10-01 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...

2011-10-01

349

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

Code of Federal Regulations, 2010 CFR

...2010-10-01 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...

2010-10-01

350

Surface studies of barium and barium oxide on tungsten and its application to understanding the mechanism of operation of an impregnated tungsten cathode  

NASA Technical Reports Server (NTRS)

Surface studies have been made of multilayer and monolayer films of barium and barium oxide on a tungsten substrate. The purpose of the investigation was to synthesize the surface conditions that exist on an activated impregnated tungsten cathode and obtain a better understanding of the mechanism of operation of such cathodes. The techniques employed in these measurements were Auger spectroscopy and work-function measurements. The results of this study show that the surface of an impregnated cathode is identical to that observed for a synthesized monolayer or partial monolayer of barium on oxidized tungsten by evaluating Auger spectra and work-function measurements. Data obtained from desorption studies of barium monolayers on a tungsten substrate in conjunction with Auger and work-function results have been interpreted to show that throughout most of its life an impreganated cathode has a partial monolayer, rather than a monolayer, of barium on its surface.

Forman, R.

1976-01-01

351

Design, testing, fabrication and launch support of a liquid chemical barium release payload (utilizing the liquid fluorine-barium salt/hydrazine system)  

NASA Technical Reports Server (NTRS)

A payload was designed which included a cryogenic oxidizer tank, a fuel tank, and burner section. Release of 30 lb of chemicals was planned to occur in 2 seconds at the optimum oxidizer to fuel ratio. The chemicals consisted of 17 lb of liquid fluorine oxidizer and 13 lb of hydrazine-barium salt fuel mixture. The fuel mixture was 17% barium chloride, 16% barium nitrate, and 67% hydrazine, and contained 2.6 lb of available barium. Two significant problem areas were resolved during the program: explosive valve development and burner operation. The release payload was flight tested, from Wallops Island, Virginia. The release took place at an altitude of approximately 260 km. The release produced a luminous cloud which expanded very rapidly, disappearing to the human eye in about 20 seconds. Barium ion concentration slowly increased over a wide area of sky until measurements were discontinued at sunrise (about 30 minutes).

Stokes, C. S.; Smith, E. W.; Murphy, W. J.

1972-01-01

352

Barium and Yttrium abundance in intermediate-age and old open clusters  

E-print Network

Barium is a neutron capture element, that, in open clusters, is frequently over-abundant with respect to the Iron. A clear explanation for this is still missing. Additionally, its gradient across the Galactic disk is poorly constrained. We measure the abundance of yttrium and barium using the synthetic spectrum method from UVES high-resolution spectra of eight distant open clusters, namely Ruprecht 4, Ruprecht 7, Berkeley 25, Berkeley 73, Berkeley 75, NGC 6192, NGC 6404, and NGC 6583. The barium abundance was estimated using NLTE approximation. We confirm that Barium is indeed over-abundant in most clusters, especially young clusters. Finally, we investigated the trend of yttrium and barium abundances as a function of distance in the Galaxy and ages. Several scenarios for the barium over-abundance are then discussed.

Mishenina, T; Carraro, G; Kovtyukh, V V; Yegorova, I A

2013-01-01

353

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

354

Vanadium doped barium germanate microrods and photocatalytic properties under solar light  

NASA Astrophysics Data System (ADS)

Vanadium doped barium germanate microrods have been prepared by a facile hydrothermal process. The obtained vanadium doped barium germanate microrods are proved to be hexagonal BaGe4O9 and orthorhombic Ba2V2O7 phases by X-ray diffraction. Scanning electron microscopy shows that the vanadium doped barium germanate products consist of microrods with the diameter of microscale size. The diameter of the mirorods decreases from 800 nm to 150 nm with the vanadium doping mass percentage increasing from 1% to 10%. Solid UV-vis diffuse reflectance spectra show that the band gap of the vanadium doped barium germanate is smaller than that of the undoped barium germanate. The photocatalytic activity has been greatly enhanced by the vanadium doping. The vanadium doped barium germanate microrods exhibit great application potential for the photocatalytic degradation of methylene blue under solar light irradiation.

Pei, L. Z.; Wang, S.; Liu, H. D.; Lin, N.; Yu, H. Y.

2015-01-01

355

Magnetic Field Alignment of Barium Ferrite Thick Films for Microwave Circulator Applications  

NASA Astrophysics Data System (ADS)

Barium ferrite films were prepared using screen printing method for their applications in self-biased microwave integrated circulators. The influences of alignment magnetic field on the microstructure and magnetic properties of the barium ferrite thick films were investigated. The results show that the (00l) peaks of the barium ferrite films are enhanced with the increase of alignment magnetic field. Hexagonal BaFe12O19 platelets rotate and orient with c-axis perpendicular to the film plane after the magnetic field aligning. The remanence ratio of the barium ferrite films is improved from 0.52 to 0.78 with the increase of alignment magnetic field from 0 to 8 kOe. By magnetic field aligning, barium ferrite thick films with the remanence ratio of 0.8 have been prepared. A prototype of microwave integrated circulator is developed with the prepared barium ferrite films.

Peng, Bin; Wang, Yuanchao; Zhang, Wanli; Zhang, Wenxu; Tan, Ke

2012-10-01

356

Numerical simulation of a radially injected barium cloud  

NASA Technical Reports Server (NTRS)

Electrostatic two-dimensional numerical simulations of a radially symmetric barium injection experiment demonstrate that ions created by solar UV irradiation are electrostatically bound to the electrons which remain tied to the field lines on which they are created. Two possible instabilities are identified, but neither of them causes the barium plasma cloud to polarize in a way that would permit the plasma to keep up with the neutrals. In a second model, the velocity of the neutrals is allowed to be a function of the azimuthal angle. Here, a portion of the cloud does polarize in a way that allows a portion of the plasma to detach and move outward at the approximate speed of the neutrals. No rapid detachment is found when only the density of the neutrals is given an azimuthal asymmetry.

Swift, D. W.; Wescott, E. M.

1981-01-01

357

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

358

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

359

Structural Study of Rare Earth Oxides Doped by Barium  

NASA Astrophysics Data System (ADS)

Two series of samples noted LnBaX (where Ln = Nd or Sm, X = at. % of Ba) were dispersed in an excess of bi-distilled and demineralised water during 16 h at 80° from Ln2O3 and ?-BaCO3. These samples were calcined under air at 450 and 1150 °C then characterized by X-ray diffraction, scanning electron microscopy (SEM) and X-ray photoelectron spectroscopy. After calcination at 450 °C, XRD and XPS measurement shows the presence of Ln2O3, barium carbonates, oxy-carbonates and oxy-hydroxides LnO(OH) in LnBaX. At 1150 °C, results shows that NdBaX and SmBaX are formed by the BaO and Ln2O3. However neodymium and samarium oxides do not incorporate barium.

Ghelamallah, Madani; Kacimi, Soufi; Fertout, Radia Imane

360

Electromagnetic properties of photodefinable barium ferrite polymer composites  

NASA Astrophysics Data System (ADS)

This article reports the magnetic and microwave properties of a Barium ferrite powder suspended in a polymer matrix. The sizes for Barium hexaferrite powder are 3-6 ?m for coarse and 0.8-1.0 ?m for the fine powder. Ratios 1:1 and 3:1 (by mass) of ferrite to SU8 samples were characterized and analyzed for predicting the necessary combinations of these powders with SU8 2000 Negative photoresist. The magnetization properties of these materials were equally determined and were analyzed using Vibrating Sample Magnetometer (VSM). The Thru, Reflect, Line (TRL) calibration technique was employed in determining complex relative permittivity and permeability of the powders and composites with SU8 between 26.5 and 40 GHz.

Sholiyi, Olusegun; Lee, Jaejin; Williams, John D.

2014-07-01

361

Anomalies of piezoelectric coefficients in barium titanate thin films  

NASA Astrophysics Data System (ADS)

Modeling of electromechanical devices involves the use of different material coefficients, whose measurement is a difficult task, especially when the problem concerns thin films. Required coefficients of thin films could be found theoretically, using known values of the bulk constants. Electromechanical coefficients of barium titanate thin films are still unknown; therefore, it is expedient to carry out their calculations. We give here the full set of electromechanical coefficients of barium titanate thin films for the whole range of technologically available misfit strains. In the present paper, piezoelectric coefficients as functions of a misfit strain were calculated. It was revealed that piezoelectric coefficients exhibit anomalies at phase boundaries and inside the monoclinic r-phase as well. The obtained results allow finding the required values of the thin-film parameters, varying the misfit strain.

Shirokov, Vladimir; Kalinchuk, Valery; Shakhovoy, Roman; Yuzyuk, Yury

2014-11-01

362

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

363

NASA/Max Planck Institute Barium Ion Cloud Project.  

NASA Technical Reports Server (NTRS)

NASA and the Max Planck Institute for Extraterrestrial Physics (MPE), Munich, Germany, conducted a cooperative experiment involving the release and study of a barium cloud at 31,500 km altitude near the equatorial plane. The release was made near local magnetic midnight on Sept. 21, 1971. The MPE-built spacecraft contained a canister of 16 kg of Ba CuO mixture, a two-axis magnetometer, and other payload instrumentation. The objectives of the experiment were to investigate the interaction of the ionized barium cloud with the ambient medium and to deduce the properties of electric fields in the proximity of the release. An overview of the project is given to briefly summarize the organization, responsibilities, objectives, instrumentation, and operational aspects of the project.

Brence, W. A.; Carr, R. E.; Gerlach, J. C.; Neuss, H.

1973-01-01

364

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

365

Synthesis and characterization of barium ferrite–silica nanocomposites  

SciTech Connect

In this work, we prepared barium ferrite-silica (BaM-SiO{sub 2}) nanocomposites of different molar ratios by high-energy ball milling, followed by heat-treatment at different temperatures. The microstructure, morphology and magnetic properties were characterized for different synthesis conditions by using X-ray diffraction (XRD), scanning electron microscopy (SEM) and vibrating sample magnetometry (VSM). The results indicate that 15 h of milling was enough to avoid the generation of hematite phase and to get a good dispersion of barium ferrite particles in the ceramic matrix. For milling periods beyond 15 h and heat treatment above 900 °C, the XRD patterns showed the presence of hematite phase caused by the decomposition of BaM. The agglomerate size observed through SEM analysis was around 150 nm with a good BaM dispersion into the SiO{sub 2} matrix. The highest saturation magnetization (Ms) value obtained was 43 emu/g and the corresponding coercivity (Hc) value of 3.4 kOe for the composition 60BaM-40SiO{sub 2} milled for 15 h and heat treated at 900 °C. This coercivity value is acceptable for the application in magnetic recording media. Highlights: • Barium ferrite–silica nanocomposites were prepared by high energy ball milling. • Optimal processing time is 15 h milling and heat treatment at 900 °C. • This is enough to avoid the generation of hematite phase. • Obtain good dispersion of barium ferrite particles in the ceramic matrix • Above this processing time shows the presence of increased amount of hematite.

Aguilar-González, M.A.; Mendoza-Suárez, G.; Padmasree, K.P., E-mail: padma512@yahoo.com

2013-10-15

366

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

367

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

368

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

369

Barium isotopes in chondritic meteorites: implications for planetary reservoir models.  

PubMed

High-precision barium isotope measurements yielded differences of up to 25 parts per million in the 137Ba/136Ba ratio and 60 parts per million in the 138Ba/136Ba ratio between chondrites and Earth. These differences probably arose from incomplete mixing of nucleosynthetic material in the solar nebula. Chondritic meteorites have a slight excess of supernova-derived material as compared to Earth, demonstrating that the solar nebula was not perfectly homogenized upon formation. PMID:17023611

Ranen, Michael C; Jacobsen, Stein B

2006-11-01

370

Barium Isotopes in Chondritic Meteorites: Implications for Planetary Reservoir Models  

NASA Astrophysics Data System (ADS)

High-precision barium isotope measurements yielded differences of up to 25 parts per million in the 137Ba/136Ba ratio and 60 parts per million in the 138Ba/136Ba ratio between chondrites and Earth. These differences probably arose from incomplete mixing of nucleosynthetic material in the solar nebula. Chondritic meteorites have a slight excess of supernova-derived material as compared to Earth, demonstrating that the solar nebula was not perfectly homogenized upon formation.

Ranen, Michael C.; Jacobsen, Stein B.

2006-11-01

371

Barium ferrite powders prepared by milling and annealing  

Microsoft Academic Search

Purpose: Microstructure and magnetic properties analysis of barium ferrite powder obtained by milling and heat treatment. Design\\/methodology\\/approach: The milling process was carried out in a vibratory mill, which generated vibrations of the balls and milled material inside the container during which their collisions occur. After milling process the powders were annealed in electric chamber furnace. The X-ray diffraction methods were

R. Nowosielski; R. Babilas; G. Dercz; J. Wrona

372

Microstructure of composite material with powders of barium ferrite  

Microsoft Academic Search

Purpose: The aim of the present work is the microstructure characterization of commercial powder BaFe12O19 (as-prepared) and composite material with BaFe12O19 powders and polymer matrix, using XRD (X-Ray Diffraction) and SEM (Scanning Electron Microscopy) methods. Design\\/methodology\\/approach: The morphology of barium ferrite powders and a fracture surface of the examined composite material was realized by using the scanning electron microscope. The

R. Nowosielski; R. Babilas; G. Dercz; L. Paj?k b

373

Microstructure and magnetic properties of commercial barium ferrite powders  

Microsoft Academic Search

Purpose: Microstructural and magnetic properties analysis of commercial barium ferrite powder BaFe12O19. Design\\/methodology\\/approach: The X-ray diffraction methods were utilized not only for qualitative and quantitative phase analysis of studied powder sample, but also for the determination of lattice parameters, crystallite size and the lattice distortion. The Rietveld method was used in the verification of the qualitative phase composition and in

R. Nowosielski; R. Babilas; J. Wrona

374

Study of formation mechanism of barium hexaferrite by sintering curve  

Microsoft Academic Search

Barium hexaferrite (BaFe12O19) with hexagonal structure was fabricated by sintering the mixture of ?-Fe2O3 and BaCO3, ball milling of the mixture followed by heat treatment as well as glycin–nitrate method and subsequent heat treatment, respectively. The mechanism of formation of the BaFe12O19 in the three kinds of procedures was investigated by using sintering shrinkage curve and XRD measurements. It was

H. Z. Wang; Q. He; G. H. Wen; F. Wang; Z. H. Ding; B. Yao

2010-01-01

375

Preparation of Nanoparticles of Barium Ferrite from Precipitation in Microemulsions  

Microsoft Academic Search

Magnetic nanoparticles of barium ferrite (BaFe12O19) have been synthesized using a microemulsion mediated process. The aqueous cores of water-in-oil microemulsions were used as constrained microreactors for the precipitation of precursor carbonate and hydroxide particles. These precursors were then calcined at 925°C for 12?h, during which time they were transformed to the hexagonal ferrite. The pH of reaction was varied between

B. J. Palla; D. O. Shah; P. Garcia-Casillas; J. Matutes-Aquino

1999-01-01

376

Microwave-Induced Combustion Synthesis of Hexagonal Barium Ferrite Powders  

Microsoft Academic Search

A novel ceramic synthesis technique, microwave-assisted process was investigated for the production of Barium Hexagonal ferrite (BaFe^Oip) powders with improved physical properties. Compared to conventional synthetic route, the new method significantly shortened synthetic steps and reaction time. This technique involves the reaction of stoichiometric amount of metal nitrates and appropriate dosage of citric acid at microwave oven and the whole

Dong Limin; Han Zhidong; Wu Ze; Zhang Xianyou

2007-01-01

377

Crystallographic properties of magnetron sputtered barium ferrite films  

Microsoft Academic Search

The development of devices combining a ferrite with a semiconductor chip is a major focus of current research. Barium hexaferrite (BaFe12O19 or BaM) thick films are deposited here using a RF magnetron sputtering system. Films are amorphous and non magnetic after deposition. Post-deposition thermal annealing is employed to make the films crystallize. The effects of the substrate, thermal annealing process,

S. Capraro; M. Le Berre; J. P. Chatelon; B. Bayard; H. Joisten; C. Canut; D. Barbier; J. J. Rousseau

2004-01-01

378

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

379

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

380

A global survey of antibiotic leftovers in the outpatient setting  

Microsoft Academic Search

We performed a global survey of outpatients who had taken self-administered antibiotics within the last 12 months in order to identify factors that lead to possession of leftover antibiotics in the community. The study included 4514 subjects aged 18–99 years. Of 4192 respondents not currently taking antibiotics, 53.7% admitted having leftover antibiotics, of whom 77.0% saved them, 4.6% gave them

Przemyslaw Kardas; Jean-Claude Pechère; Dyfrig A. Hughes; Giuseppe Cornaglia

2007-01-01

381

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

382

Combined intravenous and oral mesna in outpatients treated with ifosfamide  

Microsoft Academic Search

Purpose: To prevent hemorrhagic cystitis, mesna is typically injected intravenously (IV) at the time of an ifosfamide dose and 4\\u000a and 8?h later. To simplify outpatient ifosfamide therapy, we gave the second and third mesna doses orally. Methods: The mesna doses (400 or 600?mg\\/m2) were 40% (w\\/w) of each ifosfamide dose (1.0 or 1.5?g\\/m2), which was given daily for 5

Marshall P. Goren; Linda M. McKenna; Thomas L. Goodman

1997-01-01

383

Personality Disorders among Danish Alcoholics Attending Outpatient Treatment  

Microsoft Academic Search

The aim of the present study was firstly to describe the characteristics of alcoholic outpatients (A) suffering from co-morbid personality disorder (PD) of either the cluster B (A+PDB) or cluster C (A+PDC) type. Secondly, to investigate the effect of various kinds of treatment to be able to single out the most beneficial therapy. Thirdly, to identify the most beneficial treatment.

Dorte Nordholm; Bent Nielsen

2007-01-01

384

Burst suppression in sleep in a routine outpatient EEG?  

PubMed Central

Burst suppression (BS) is an electroencephalogram (EEG) pattern that is characterized by brief bursts of spikes, sharp waves, or slow waves of relatively high amplitude alternating with periods of relatively flat EEG or isoelectric periods. The pattern is usually associated with coma, severe encephalopathy of various etiologies, or general anesthesia. We describe an unusual case of anoxic brain injury in which a BS pattern was seen during behaviorally defined sleep during a routine outpatient EEG study.

Kheder, Ammar; Bianchi, Matt T.; Westover, M. Brandon

2014-01-01

385

Treatment of Acute and Chronic Pain in the Outpatient Setting  

Microsoft Academic Search

Although there have been dramatic changes in attitude and practice in the treatment of children’ pain in the hospital, pain\\u000a management in outpatient settings is treated essentially the way it was 20 years ago. It is quite remarkable that many common\\u000a illnesses and procedures universally acknowledged to be associated with significant discomfort and anxiety have received minimal\\u000a research attention. In

Neil L. Schechter

386

Molecular modeling of phosphonate molecules onto barium sulfate terraced surfaces.  

PubMed

The adsorption of phosphonate molecules onto mineral surfaces is of interest due to their use as scale inhibitors. Molecular modeling is an important tool that can aid the fundamental understanding of how these inhibitors operate. This paper presents an empirical molecular mechanics study of the adsorption of a series of straight chain phosphonate molecules onto barium sulfate. It has been found that inhibition can be predicted for this straight chain series of molecules, which differ by the number of phosphonate groups present as well as by the chain length. Even more importantly, the modeling results can predict which faces will be preferred, and this has been verified by scanning and transmission electron microscopy on the resultant barite particles. It has been found that, in general, lattice matching results in the lowest replacement energy for all of the organic molecules investigated. The agreement between the experiment and the model confirms that the dominant mechanism of interaction for the additives on barium sulfate is via the deprotonated phosphonate groups with the barium ions on the surface. PMID:16599519

Jones, Franca; Richmond, William R; Rohl, Andrew L

2006-04-13

387

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

388

The Tordo 1 polar cusp barium plasma injection experiment  

NASA Technical Reports Server (NTRS)

In January 1975, two barium plasma injection experiments were carried out with rockets launched into the upper atmosphere where field lines from the dayside cusp region intersect the ionosphere. The Tordo 1 experiment took place near the beginning of a worldwide magnetic storm. It became a polar cap experiment almost immediately as convection perpendicular to the magnetic field moved the fluorescent plasma jet away from the cusp across the polar cap in an antisunward direction. Convection across the polar cap with an average velocity of more than 1 km/s was observed for nearly 40 min until the barium flux tubes encountered large electron fields associated with a poleward bulge of the auroral oval near Greenland. Prior to the encounter with the aurora near Greenland there is evidence of upward acceleration of the barium ions while they were in the polar cap. The three-dimensional observations of the plasma orientation and motion give an insight into convection from the cusp region across the polar cap, the orientation of the polar cap magnetic field lines out to several earth radii, the causes of polar cap magnetic perturbations, and parallel acceleration processes.

Wescott, E. M.; Stenbaek-Nielsen, H. C.; Davis, T. N.; Jeffries, R. A.; Roach, W. H.

1978-01-01

389

Orbital barium CRRES injection - effective source of ionospheric wavelike disturbances  

NASA Astrophysics Data System (ADS)

Spectral analysis of artificial wavelike disturbances (WD) in ionospheric parameters is presented. The sources of WD are barium clouds injections in Combined Release and Radiation Effects Satellite (CRRES) perigee experiments. Plasma concentration pulsations are found in the ionospheric F2 layer maximum over Havana (Cuba) at distances 1500-2500 km from the barium injection. It was found that for the spectral component with 10 min period, the delay (relative to injection moment) corresponded to WD propagation velocity in 323-390 m/s band and depended on the specific injection conditions. It was shown that in every experiment the WD effective propagation velocity in the terminator region correlated with the sunlit part of the trajectory from the injection point to Havana. When comparing this WD type with WD's of other origins (from earthquakes, high-altitude explosions and solar terminator), it was shown that purposeful injection in the ionosphere of even a small barium quantity with orbital velocity in terminator region might be the effective means for generation or amplification of natural WD.

Ruzhin, Yu. Ya.; Oraevsky, V. N.; Depueva, A. Kh.; Perez, H.; Palasio, L.

390

Mechanism of action of barium ion on rat aortic smooth muscle.  

PubMed

The mechanism of action of barium ion on the aortic smooth muscle of the normal rat was investigated using in vitro calcium-depleted aortic strips. Aortic strips were depleted of calcium by repeated exposure to norepinephrine in a calcium-free bathing solution. Although calcium depletion abrogated the response of strips to catecholamines and depolarizing agents, the response to barium chloride remained quantitatively intact. The calcium influx blocker D 600 prevented the contractile response to barium but not to catecholamines, whereas phentolamine prevented the response to catecholamines but not barium. The strip response to barium was depressed by a twofold increase in extracellular magnesium concentration whether the strip was intact or calcium depleted. Although increased concentrations of calcium in the extracellular medium inhibited the contractile response to potassium ion, increases in barium merely potentiated the potassium contracture. These findings indicate that barium produces its contractile effect on vascular smooth muscle by a direct intracellular interaction with the contractile or regulatory proteins. Barium enters these cells via calcium influx channels and is probably not sequestered in a physiologically releasable pool. Unlike calcium, barium does not stabilize the smooth muscle sarcolemma when present in high concentration. PMID:6703038

Hansen, T R; Dineen, D X; Petrak, R

1984-03-01

391

Intensive outpatient comprehensive behavioral intervention for tics: A case series.  

PubMed

Recent randomized clinical trials have established the efficacy of Comprehensive Behavioral Intervention for Tics (CBIT) in treating children and adults with Tourette syndrome and persistent tic disorders. However, the standard CBIT protocol uses a weekly outpatient treatment format (i.e., 8 sessions over 10 wk), which may be inconvenient or impractical for some patients, particularly patients, who are required to travel long distances in order to receive care. In contrast, an intensive outpatient program may increase accessibility to evidence-based behavioral treatments for Tourette syndrome and other persistent tic disorders by eliminating the necessity of repeated travel. This case series evaluated the use of an intensive outpatient program CBIT (IOP CBIT) for the treatment of 2 preadolescent males (ages 10 and 14 years) with Tourette syndrome. The IOP CBIT treatment protocol included several hours of daily treatment over a 4-d period. Both children evidenced notable reductions in their tics and maintained treatment gains at follow-up. Moreover, both patients and their parents expressed treatment satisfaction with the IOP CBIT format. This case series addresses an important research gap in the behavioral treatment of tic disorders literature. The patients' treatment outcomes indicate that IOP CBIT is a promising treatment that warrants more systematic investigation. PMID:25325069

Blount, Tabatha H; Lockhart, Ann-Louise T; Garcia, Rocio V; Raj, Jeslina J; Peterson, Alan L

2014-10-16

392

Intensive outpatient comprehensive behavioral intervention for tics: A case series  

PubMed Central

Recent randomized clinical trials have established the efficacy of Comprehensive Behavioral Intervention for Tics (CBIT) in treating children and adults with Tourette syndrome and persistent tic disorders. However, the standard CBIT protocol uses a weekly outpatient treatment format (i.e., 8 sessions over 10 wk), which may be inconvenient or impractical for some patients, particularly patients, who are required to travel long distances in order to receive care. In contrast, an intensive outpatient program may increase accessibility to evidence-based behavioral treatments for Tourette syndrome and other persistent tic disorders by eliminating the necessity of repeated travel. This case series evaluated the use of an intensive outpatient program CBIT (IOP CBIT) for the treatment of 2 preadolescent males (ages 10 and 14 years) with Tourette syndrome. The IOP CBIT treatment protocol included several hours of daily treatment over a 4-d period. Both children evidenced notable reductions in their tics and maintained treatment gains at follow-up. Moreover, both patients and their parents expressed treatment satisfaction with the IOP CBIT format. This case series addresses an important research gap in the behavioral treatment of tic disorders literature. The patients’ treatment outcomes indicate that IOP CBIT is a promising treatment that warrants more systematic investigation. PMID:25325069

Blount, Tabatha H; Lockhart, Ann-Louise T; Garcia, Rocio V; Raj, Jeslina J; Peterson, Alan L

2014-01-01

393

Determinants of HIV Outpatient Service Utilization: A Systematic Review.  

PubMed

Demands on HIV services are increasing as a consequence of the increased life-expectancy of HIV patients in the highly active antiretroviral therapy era. Understanding the factors that influence utilization of ambulatory HIV services is useful for planning service provision. This study reviewed factors associated with utilization of hospital based HIV out-patient services. Studies reporting person-based utilization rates of HIV-specific outpatient services broken down by patient or healthcare characteristics were eligible for inclusion. The Andersen Behavioral Model was used to organize the information extracted into pre-disposing, enabling and need components. Ten studies were included in the final review. Older age, private insurance, urban residence, lower CD4 counts, a diagnosis of AIDS, or anti-retroviral treatment were associated with higher utilization rates. The results of this review are consistent with existing knowledge regarding HIV patients' use of health services. Little information was identified on the influence of health service characteristics on utilization of out-patient services. PMID:24907780

Brennan, Aline; Morley, Deirdre; O'Leary, Aisling C; Bergin, Colm J; Horgan, Mary

2015-01-01

394

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

395

Weak Carbon-Hydrogen-Nitrogen Interactions Affect the Heterocyclic Ligand Bonding Modes in Barium Complexes Containing 2-Tetrazolato  

E-print Network

Weak Carbon-Hydrogen-Nitrogen Interactions Affect the Heterocyclic Ligand Bonding Modes in Barium calculations of barium complexes of the formula Ba- (azolate)2(18-crown-6). With dimethylaminotetrazolate [CN4

Schlegel, H. Bernhard

396

Project EARTH-12-GMH2: Cadmium and barium isotopes as tracers of modern and past ocean processes  

E-print Network

Project EARTH-12-GMH2: Cadmium and barium isotopes as tracers of modern and past ocean processes Supervisor: Professor Gideon Henderson Cadmium and barium both show surface depletion in the oceans, are both

Henderson, Gideon

397

The effect of biaxial texture on the effective electromechanical constants of polycrystalline barium titanate and lead titanate thin films  

E-print Network

barium titanate and lead titanate thin films Jennifer L. Ruglovsky a,*, Jiangyu Li b , Kaushik to an enhanced piezoelectric effect for barium titanate films, but not for lead titanate. Twist texturing about for a polycrystalline film. We explore tetragonal 4MM materials, and give specific results for barium titanate and lead

Atwater, Harry

398

Nanoshell tubes of ferroelectric lead zirconate titanate and barium titanate Yun Luo, Izabela Szafraniak, and Nikolai D. Zakharov  

E-print Network

Nanoshell tubes of ferroelectric lead zirconate titanate and barium titanate Yun Luo, Izabela templates, barium titanate and lead zirconate titanate tubes with diameters ranging from 50 nm up to several (PbZr0.52Ti0.48O3 ,PZT) and barium titanate (BaTiO3 ,BTO) nanotubes were fabricated by using

Ramesh, R.

399

Crossed-Beam Reactions of Barium with Hydrogen Halides Measurement of Internal State Distributions by Laser-Induced Fluorescence  

E-print Network

Crossed-Beam Reactions of Barium with Hydrogen Halides Measurement of Internal State Distributions is presented and applied to the reactions of barium with the hydrogen halides. It is found that most-inducedfluorescenceas a molecular beam detector and apply it to the reactions of barium atoms with hydrogen halides, Reactions (1

Zare, Richard N.

400

Diverse patterns of ocean export productivity change across the Cretaceous-7 Paleogene boundary: new insights from biogenic barium8  

E-print Network

Paleogene boundary: new insights from biogenic barium8 9 10 11 12 Pincelli M. Hull1,2 and Richard D. Norris1 productivity patterns using new and compiled measurements of biogenic barium. Unlike a53 previous synthesis, we barium and other proxies in the central57 Pacific and some upwelling or neritic Atlantic sites indicate

401

Volume 40, number 4 OPTICS COMMUNICATIONS 15 January 1982 COLOR CENTER LASER OPTOGALVANIC SPECTROSCOPY OF LITHIUM, BARIUM, NEON  

E-print Network

SPECTROSCOPY OF LITHIUM, BARIUM, NEON AND ARGON RYDBERG STATES IN HOLLOW CATHODE DISCHARGES Marianne H operating in the range 3600-4100 cm-`. Transitions in lithium and barium atoms sputtered from the cathodes of Rydberg transitions in lithium, barium, neon and ar- gon using a color center laser operating

Cohen, Ronald C.

402

In-situ formation of barium ferrite in iron doped "tetragonal tungsten bronze": Elaboration of room temperature multiferroic composites  

E-print Network

1 In-situ formation of barium ferrite in iron doped "tetragonal tungsten bronze": Elaboration their room temperature multiferroics properties to the occurrence of barium ferrite parasitic phases to the in-situ formation of barium ferrite is given. We show that we can control the spurious ferrite phase

Paris-Sud XI, Université de

403

doi:10.1016/j.gca.2004.11.026 Barium uptake and adsorption in diatoms  

E-print Network

doi:10.1016/j.gca.2004.11.026 Barium uptake and adsorption in diatoms ERIKA STERNBERG,1, *, DEGUI) Abstract--Using trace metal-defined culture conditions, we measured the cellular barium concentration and Dahmke, 1994) and the flux of particulate biogenic barium correlates well with the flux of organic carbon

Morel, François M. M.

404

The role of microstructure and processing on the proton conducting properties of gadolinium-doped barium cerate  

E-print Network

-doped barium cerate Sossina M. Hailea) Department of Material Science, California Institute of Technology-crystal fibers, grown by a modified float zone process, were notably barium deficient, and exhibited a low. Indeed, it has been proposed that the grain bound- aries in barium cerate, in particular, are responsible

405

Nuclear Instruments and Methods in Physics Research A 544 (2005) 514519 Laser-Induced Fluorescence diagnostic of barium ion plasmas  

E-print Network

diagnostic of barium ion plasmas in the Paul Trap Simulator Experiment Moses ChungÃ?, Erik P. Gilson, Ronald C. Instead of cesium, which has been used in the initial phase of the PTSX experiment, barium has been of the laser-induced fluorescence diagnostic using barium ions is presented with the characterization

Gilson, Erik

406

Self-biased planar millimeter wave notch filters based on magnetostatic wave excitation in barium hexagonal ferrite thin films  

E-print Network

Self-biased planar millimeter wave notch filters based on magnetostatic wave excitation in barium; accepted 29 September 2010; published online 25 October 2010 The use of M-type barium hexagonal ferrite Ba-type barium hexagonal ferrite BaFe12O19 BaM thin films, as a replacement for those cubic garnets.4 Hexagonal

407

Barium Ions for Quantum Computing Matthew Dietrich, Ryan Bowler, Gary Howell, Adam Kleczewski, Nathan Kurz, Viki Mirgon,  

E-print Network

Barium Ions for Quantum Computing Matthew Dietrich, Ryan Bowler, Gary Howell, Adam Kleczewski+ make it an excellent qubit candidate. Here we report trapping 138Ba+, an even isotope of barium production, using the S1/2 to P3/2 transition. Barium as a Qubit The two hyperfine levels of the 137Ba

Blinov, Boris

408

Barium uptake into the shells of the common mussel (Mytilus edulis) and the potential for estuarine paleo-chemistry reconstruction  

E-print Network

Barium uptake into the shells of the common mussel (Mytilus edulis) and the potential for estuarine and Cosmochimica Acta 70, 2 (2006) 395-407" #12;Barium in Mytilus shells Gillikin et al. 2 40 Abstract In this study we test if calcite shells of the common mussel, Mytilus edulis, contain barium in proportion

Paris-Sud XI, Université de

409

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. PMID:23042168

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

2012-01-01

410

IEEE TRANSACTIONS ON MAGNETICS, VOL. 37, NO. 4, JULY 2001 2589 Barium and Strontium Ferrite Perpendicular Thin  

E-print Network

IEEE TRANSACTIONS ON MAGNETICS, VOL. 37, NO. 4, JULY 2001 2589 Barium and Strontium FerriteAlSi) as the soft magnetic underlayer for hexagonal barium ferrite (BaM) and strontium ferrite (SrM) was studied--Barium ferrite, multi-layer, sendust, soft under- layer, strontium ferrite, textured growth. I. INTRODUCTION M

Laughlin, David E.

411

Evidence against barium in the mushroom Trogia venenata as a cause of sudden unexpected deaths in Yunnan, China.  

PubMed

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. PMID:23042168

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

2012-12-01

412

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...

413

Occupancy and site distribution of europium in barium magnesium aluminate Eu Mossbauer spectroscopy  

E-print Network

Occupancy and site distribution of europium in barium magnesium aluminate by 151 Eu Mo investigated this phosphor with varying europium concentrations and different synthesis conditions using 151 Eu Barium magnesium aluminate (BaMgAl10O17) activated by europium ions, also known as BAM, is widely used

Boolchand, Punit

414

Underlayer and substrate effects in RF-magnetron sputtered barium ferrite thin film media  

Microsoft Academic Search

The effect of employing various sputtered underlayers and commercially available substrates in order to optimize the characteristics of barium ferrite (BaM) thin films for magnetic recording media have been studied. Our results show that the choice of underlayer or substrate controls the resultant surface morphology and magnetic properties of the BaM film. In particular, it was found that barium ferrite

A. T. A. Wee; J. P. Wang; A. C. H. Huan; L. P. Tan; R. Gopalakrishnan; K. L. Tan

1997-01-01

415

Electric fields and plasma waves resulting from a barium injection experiment  

NASA Astrophysics Data System (ADS)

A shaped-charge, barium plasma injection experiment was performed in June 1976 from the DOE Kauai Test Facility. The rocket payload contained seven shaped charges, a sevenfold larger package than the typical payloads employed in previous barium plasma injections conducted in this program. An attitude-control system oriented the injection perpendicular to the local geomagnetic field. The injection altitude was 450 km.

Koons, H. C.; Pongratz, M. B.

1982-01-01

416

Effect of depolarization and coercivity on actuation strains due to domain switching in barium titanate  

E-print Network

March 2007; published online 23 April 2007 Large electrostrictive actuation in ferroelectric singleEffect of depolarization and coercivity on actuation strains due to domain switching in barium. The theoretical maximum actuation strain such as 1.1% for barium titanate crystals, however, has not been observed

Shu, Yi-Chung

417

The effect of barium on perceptions of taste intensity and palatability  

PubMed Central

Purpose 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. Methods Eighty healthy women grouped by age (younger, older) and genetic taste status (supertaster, non-taster) rated intensity and palatability for seven tastants prepared in deionized water with and without 40% w/v barium: non-carbonated 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. Results 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 non-tasters. Refusal rates were highest for younger subjects and supertasters, and for barium (regardless of tastant), bitter, and ethanol. Conclusions 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.

2015-01-01

418

Metabolic syndrome among psychiatric outpatients with mood and anxiety disorders  

PubMed Central

Background Few studies have simultaneously compared the impacts of pharmacotherapy and mental diagnoses on metabolic syndrome (MetS) among psychiatric outpatients with mood and anxiety disorders. This study aimed to investigate the impacts of pharmacotherapy and mental diagnoses on MetS and the prevalence of MetS among these patients. Methods Two-hundred and twenty-nine outpatients (men/women?=?85/144) were enrolled from 1147 outpatients with mood and anxiety disorders by systematic sampling. Psychiatric disorders and MetS were diagnosed using the Structured Clinical Interview for DSM-IV-TR and the new International Diabetics Federation definition, respectively. The numbers of antipsychotics, mood stabilizers, and antidepressants being taken were recorded. Logistic regression was used to investigate the impacts of pharmacotherapy and psychiatric diagnoses on MetS. Results Among 229 subjects, 51 (22.3%) fulfilled the criteria for MetS. The prevalence of MetS was highest in the bipolar I disorder (46.7%) patients, followed by bipolar II disorder (25.0%), major depressive disorder (22.0%), anxiety-only disorders (16.7%), and no mood and/or anxiety disorders (14.3%). The percentages of MetS among the five categories were correlated with those of the patients being treated with antipsychotics and mood stabilizers. Use of antipsychotics and/or mood stabilizers independently predicted a higher risk of MetS after controlling for demographic variables and psychiatric diagnoses. When adding body mass index (BMI) as an independent variable in the regression model, BMI became the most significant factor to predict MetS. Conclusion BMI was found to be an important factor related to MetS. Pharmacotherapy might be one of underlying causes of elevated BMI. The interactions among MetS, BMI, pharmacotherapy, and psychiatric diagnoses might need further research. PMID:24952586

2014-01-01

419

Lignocaine aerosol spray in outpatient hysteroscopy: a randomized double-blind placebo-controlled trial  

Microsoft Academic Search

Objective: To assess the efficacy of lignocaine spray during outpatient hysteroscopy in reducing the need for additional anesthesia and reducing the discomfort of the procedure.Design: A randomized double-blind, placebo-controlled trial.Setting: An undergraduate university teaching hospital in London.Patient(s): One hundred twenty patients undergoing outpatient hysteroscopy.Intervention(s): Application of lignocaine spray to the cervix, cervical canal, and uterine cavity during outpatient hysteroscopy.Main Outcome

Anthony Davies; Robert E. Richardson; Hugh O'Connor; Tom F. Baskett; Fritz Nagele; Adam L. Magos

1997-01-01

420

Development of Barium Ion Source for the Paul Trap Simulator Experiment  

NASA Astrophysics Data System (ADS)

A barium ion source has been developed for the laser-induced fluorescence (LIF) measurement of the transverse ion density profile in the Paul Trap Simulator Experiment (PTSX). The PTSX device is a cylindrical Paul trap whose purpose is to simulate the nonlinear dynamics of intense charged particle beam propagation in alternating-gradient magnetic transport systems. Barium ions are produced at a hot platinum surface with a high work function by surface ionization. Although there are several transition lines for the laser excitation of barium ions, transition from the metastable state 5 ^2D3/2 to the excited state 6 ^2P1/2 is considered mainly because there exists a commercially available, stable, broadband, high-power laser system in this region of the red spectrum. The ion source is composed of a barium reservoir, platinum ionizer, and extracting electrode system. Initial bench-test results, final design, and installation of the barium ion source will be presented.

Chung, Moses

2005-10-01

421

Setting process of lime-based conservation mortars with barium hydroxide  

SciTech Connect

This paper presents the effect of barium hydroxide on the setting mechanism of lime-based conservation mortars, when used as an additive material. The study focuses on the monitoring of the setting process and the identification of the mineral phases formed, which are essential for furthering the study of the durability of barium mixtures against chemical degradation. X-ray diffraction analysis (XRD), scanning electron microscopy (SEM) and thermal analysis (DTA-TG) were used to monitor the setting processes of these mixtures and identify new phases formed. The results suggest that barium hydroxide is evenly distributed within the lime and produces a homogeneous binding material, consisting of calcite (CaCO{sub 3}), witherite (BaCO{sub 3}) and barium-calcium carbonate [BaCa(CO{sub 3}){sub 2}]. Finally, it was found that barium carbonate can be directly bonded to calcitic aggregates and therefore increases its chemical compatibility with the binding material.

Karatasios, Ioannis [Institute of Materials Science, NCSR Demokritos, Aghia Paraskevi, 153 10 Athens (Greece)]. E-mail: ikarat@ims.demokritos.gr; Kilikoglou, Vassilis [Institute of Materials Science, NCSR Demokritos, Aghia Paraskevi, 153 10 Athens (Greece); Colston, Belinda [Department of Forensic and Biomedical Sciences, University of Lincoln, Lincoln, LN6 7TS (United Kingdom); Theoulakis, Panagiotis [Department of Conservation of Antiquities and Works of Art, TEI of Athens, Athens, 122 10 (Greece); Watt, David [Hutton and Rostron Environmental Investigations Limited/Centre for Sustainable Heritage, University College London (United Kingdom)

2007-06-15

422

Centrifugal Jet Spinning for Highly Efficient and Large-scale Fabrication of Barium Titanate Nanofibers  

PubMed Central

The centrifugal jet spinning (CJS) method has been developed to enable large-scale synthesis of barium titanate nanofibers. Barium titanate nanofibers with fiber diameters down to 50 nm and grain sizes around 25 nm were prepared with CJS by spinning a sol-gel solution of barium titanate and poly(vinylpyrrolidone) with subsequent heat treatment at 850 °C. XRD and FTIR analysis demonstrated high purity and tetragonal perovskite structured barium titanate nanofibers. SEM and TEM images confirm the continuous high aspect ratio structure of barium titanate nanofibers after heat treatment. It is demonstrated that the CJS technique offers a highly efficient method for large-scale fabrication of ceramic nanofibers at production rates of up to 0.3 gram/minute. PMID:24563566

Ren, Liyun; Kotha, Shiva P.

2014-01-01

423

Photometric Calibration of the Barium Cloud Image in a Space Active Experiment: Determining the Release Efficiency  

NASA Astrophysics Data System (ADS)

The barium release experiment is an effective method to explore the near-earth environment and to study all kinds of space physics processes. The first space barium release experiment in China was successfully carried out by a sounding rocket on April 5, 2013. This work is devoted to calculating the release efficiency of the barium release by analyzing the optical image observed during the experiment. First, we present a method to calibrate the images grey value of barium cloud with the reference stars to obtain the radiant fluxes at different moments. Then the release efficiency is obtained by a curve fitting with the theoretical evolution model of barium cloud. The calculated result is basically consistent with the test value on ground.

Xie, Liang-Hai; Li, Lei; Wang, Jing-Dong; Tao, Ran; Cheng, Bing-Jun; Zhang, Yi-Teng

2014-01-01

424

Outpatient education reduces emergency room use by patients with epilepsy.  

PubMed

Epilepsy is a costly diagnosis, with emergency room (ER) visits and hospital admissions comprising a large portion of total direct cost. An educational intervention to decrease the number of ER visits was implemented on outpatients with epilepsy, using educational handouts and DVD. The number of ER visits declined significantly in the four months following intervention compared with the preceding four months. This finding supports patient education as a valuable tool to reduce ER use, which may, in turn, cut down on health-care cost. PMID:25499153

Pascual, Franchette T; Hoang, Kathy; Hollen, Christopher; Swearingen, Richard; Hakimi, Andrea S; King, Jeanne Ann; Thompson, David

2015-01-01

425

X-Rays - Multiple Languages: MedlinePlus  

MedlinePLUS

... Chinese - Simplified (????) Chinese - Traditional (????) French (français) Hindi (??????) Japanese (???) Korean (???) Russian (???????) ... Bilingual PDF Health Information Translations Return to top Hindi (??????) Barium Enema ?????? (Hindi) Bilingual ...

426

Colonic Diseases - Multiple Languages: MedlinePlus  

MedlinePLUS

... Colonic Diseases - Multiple Languages Arabic (???????) French (français) Hindi (??????) Japanese (???) Korean (???) Russian (???????) ... baryté - français (French) Bilingual PDF Health Information Translations Hindi (??????) Barium Enema ?????? (Hindi) Bilingual ...

427

Strain engineered barium strontium titanate for tunable thin film resonators  

SciTech Connect

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. [Department of Materials Science and Engineering and Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269 (United States); Sun, F. [Department of Physics, University of Connecticut, Storrs, Connecticut 06269 (United States); Sbrockey, N. M.; Tompa, G. S. [Structured Materials Industries, Inc., Piscataway, New Jersey 08854 (United States); Kalkur, T. S. [Department of Electrical and Computer Engineering, University of Colorado at Colorado Springs, Colorado Springs, Colorado 80918 (United States); Alpay, S. P., E-mail: p.alpay@ims.uconn.edu [Department of Materials Science and Engineering and Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269 (United States); Department of Physics, University of Connecticut, Storrs, Connecticut 06269 (United States)

2014-05-19

428

The barium ion jet experiments of the Porcupine project  

NASA Astrophysics Data System (ADS)

The injection of a barium plasma from a sounding rocket by the shaped charge technique offers several possibilities that cannot be achieved by conventional releases. This is due to high initial velocities of the atoms of up to 14 km/sec. Most of the the applications are related to the great heights that the ions can reach, but some depend directly on the initial momentum. Typical applications are: tracing at high altitudes, modifications, and alternate Ionization processes. Project Porcupine contributions in this field are summarized.

Haerendel, G.

1980-06-01

429

Preparation of acicular strontium barium potassium niobate seed crystals  

Microsoft Academic Search

Acicular strontium barium potassium niobate seed crystals with approximate composition Sr0.36Ba0.51K0.31Nb2O6 can be synthesized from SrCO3, BaCO3 and Nb2O5 in molten salt. When KCl is used as molten salt, unfortunately, the synthesized seed crystals have asymmetric diameter and aspect ratio distribution due to the evaporation of KCl flux. While K2SO4 is used as molten salt, highly anisotropic Sr0.36Ba0.51K0.31Nb2O6 particles and

Li-Hui Zhu; Qing-Wei Huang; Hui Gu

2004-01-01

430

Bis(chlorido)(dimethyl­sulfoxide-?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. PMID:23284316

Gschwind, Fabienne; Jansen, Martin

2012-01-01

431

Two barium plasma injections into the northern magnetospheric cleft  

NASA Technical Reports Server (NTRS)

Two rocket experiments, performed in January 1975, investigated convection of plasma formed by solar photoionization of barium injected into the northern magnetospheric cleft at 13 km/s upward and parallel to the local geomagnetic field. Plasma convection was demonstrated from the cleft's poleward region, directly into and across the polar cap, and possibly into the convection system of the nightside auroral electrojet; plasma injected centrally within the cleft under quiet magnetic conditions remained in the cleft convection system for at least 22 min and revealed a highly structured E-field over about 600 km of longitudinal extent. Cleft location agreed with that predicted by ionosondes.

Jeffries, R. A.; Roach, W. H.; Hones, E. W., Jr.; Wescott, E. M.; Stenbaek-Nielsen, H. C.; Davis, T. N.; Winningham, J. D.

1975-01-01

432

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

433

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

434

Dielectric behavior of barium modified strontium bismuth titanate ceramic  

SciTech Connect

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 Ba{sup 2+} ion, may be due to the decrease of orthorhombicity by the incorporation of Ba{sup 2+} ion in SBT lattice.

Nayak, P., E-mail: priyambada.pce@gmail.com [Department of Physics, National Institute of Technology, Rourkela, Odisha-769008 (India); Badapanda, T. [Department of Physics, C.V. Raman College of Engineering, Bhubaneswar, Odisha-752054 (India); Anwar, S.; Panigrahi, S. [Colloids and Materials Chemistry, Institute of Minerals and Materials Technology, Bhubaneswar, Odisha-751013 (India)

2014-04-24

435

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

436

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

437

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. PMID:16535353

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

1996-01-01

438

Effect of heat treatment on the phase composition, structure and magnetic properties of M-type barium hexaferrite  

NASA Astrophysics Data System (ADS)

Effect of the heat treatment of carbonate-hydroxide precipitates on the phase composition, structure and magnetic properties of M-type barium hexaferrite has been investigated using the M?ssbauer spectroscopy, X-ray phase analysis and magnetic measurements. The distribution of Fe3+ ions over structural sites of barium hexaferrite with different degree of ferritizations has been defined. The conditions of single-domain behavior of barium hexaferrite nanoparticles in the magnetic field have been discussed. Obtained results explain the formation of magnetic structure during the synthesis of barium hexaferrite. This information could further be used for optimizing conditions for synthesis of nanosized barium hexaferrite with high-level properties.

Pashkova, E. V.; Solovyova, E. D.; Kolodiazhnyi, T. V.; Ivanitskii, V. P.; Belous, A. G.

2014-11-01

439

Outpatient- and inpatient-based buckling surgery: a comparative study  

PubMed Central

Purpose To evaluate the clinical outcomes of ambulatory buckling surgery, comparing outpatient- with inpatient-based surgery. Methods The authors performed a retrospective study of 80 consecutive cases of rhegmato genous retinal detachment from January 2009 to December 2011 treated by scleral buckling surgery. Two groups of patients were defined according to inpatient (group 1) or outpatient (group 2) surgery, and a comparison of several parameters between these two groups was performed. Results Of the 80 subjects in this study, the average age of group 1 (50 patients) was 49.7 years, and that of group 2 (30 patients) was 47.5 years. There were no statistically significant differences in the average logarithm of the minimum angle of resolution-visual acuity, the condition of the lens, or the presence of retinal lattice degeneration prior to the surgery between the groups. There were no statistically significant differences in the patterns of tear or retinal detachment or in surgical procedure between the groups. Comparing the best-corrected visual acuity after 6 months with that prior to the surgery, the changes in group 1 and group 2 were 0.26 and 0.31, respectively. The functional success rates of group 1 and group 2 after 6 months were 90% and 93%, respectively, and the anatomical success rates of group 1 and group 2 after 6 months were 94% and 96%, respectively, but these were also statistically insignificant. Conclusion Hospitalization is not essential for buckling surgery in uncomplicated rhegmatogenous retinal detachment surgery. PMID:24812485

Lee, Jin Cheol; Kim, Yu Cheol

2014-01-01

440

Dynamic optimization of chemotherapy outpatient scheduling with uncertainty.  

PubMed

Chemotherapy outpatient scheduling is a complex, dynamic, uncertain problem. Chemotherapy centres are facing increasing demands and they need to increase their efficiency; however there are very few studies looking at using optimization technology on the chemotherapy scheduling problem. We address dynamic uncertainty that arises from requests for appointments that arrive in real time and uncertainty due to last minute scheduling changes. We propose dynamic template scheduling, a novel technique that combines proactive and online optimization and we apply it to the chemotherapy outpatient scheduling problem. We create a proactive template of an expected day in the chemotherapy centre using a deterministic optimization model and a sample of appointments. As requests for appointments arrive, we use the template to schedule them. When a request arrives that does not fit the template, we update the template online using the optimization model and a revised set of appointments. To accommodate last minute additions and cancellations to the schedule, we propose a shuffling algorithm that moves appointment start times within a predefined time limit. We test the use of dynamic template scheduling against the optimal offline solution and the actual performance of the cancer centre. We find improvements in makespan of up to 20 % when using dynamic template scheduling compared to current practice. PMID:24477637

Hahn-Goldberg, Shoshana; Carter, Michael W; Beck, J Christopher; Trudeau, Maureen; Sousa, Philomena; Beattie, Kathy

2014-12-01

441

[Thrombosis prevention in outpatients with lower limb injuries].  

PubMed

The antithrombotic effect of a low molecular weight heparin was examined in a prospective randomized trial of 204 outpatients (121 men, 83 women, mean age 34.7 [16-76] years) who required immobilization with a plaster cast because of injury to the lower limb. Subjects in group I (n = 99) received a daily subcutaneous injection (36 mg) of heparin fragment calcium throughout their period in plaster (mean of 15.6 [7-66] days), while group II subjects (n = 105, mean period in plaster 15.7 [7-41] days) acted as untreated controls. Thrombosis was diagnosed by compression sonography, and positive findings were confirmed by phlebography. Thrombosis occurred in 24 patients altogether, 6 in group I (6.1%) and 18 in group II (17.1%) (P less than 0.05). While patients with thromboses had a mean of 1.96 risk factors overall, those in group I had a mean of 2.6 risk factors. Patients without thrombosis had a mean of 1.24 risk factors. The rate of thrombosis was higher in patients with fractures (4 out of 27 in group I; 10 out of 35 in group II) than in those with ligament and soft-tissue injuries (2 out of 72 in group I; 8 out of 70 in group II). The severity of trauma is apparently an important thrombogenic factor.--General thrombo-prophylaxis seems advisable for surgical outpatients requiring immobilisation treatment with a plaster cast. PMID:1309691

Kujath, P; Spannagel, U; Habscheid, W; Schindler, G; Weckbach, A

1992-01-01

442

[Perception of safety climate in outpatient pediatric care].  

PubMed

In ambulant pediatric care, patients situations are becoming increasingly complex, because the lenght of hospital stay is reduced since the introduction of Diagnosis Related Groups (DRG). Consequently, the patients' safety is constantly becoming more important. The patients' safety is closely associated with the nurses' awareness of risks and the safety climate within the institution. This study is investigating how nurses of a pediatric outpatient service estimate the patients' safety and how that can be optimized, if necessary. As part of a cross-sectional study, a total of 106 nurses of the pediatric outpatient service were interviewed with a modified German version of the "Patient Safety Climate Inventory (Patientensicherheitsklima-Inventar, PaSKI)". Data was analysed by a descriptive statistical method. The return rate was 80.2 percent. The results show a very high awareness of patients' safety issues as well as a high level of satisfaction concerning team collaboration. Both results have a positive influence on the safety-climate. Problems are associated mainly with the incident reporting system, e.g. with reporting critical incidents and communicating after reporting. This indicates the importance of a useable incident reporting system, which--in combination with staff training--may be an important step towards a structured risk management. Furthermore, it clarifies the importance of transparent communication after a reported incident, as also described in the literature. PMID:23444811

Baldegger, Claudia; Zeller, Adelheid

2013-02-01

443

Plasma waves associated with the first AMPTE magnetotail barium release  

NASA Technical Reports Server (NTRS)

Plasma waves observed during the March 21, 1985, AMPTE magnetotail barium release are described. Electron plasma oscillations provided local measurements of the plasma density during both the expansion and decay phases. Immediately after the explosion, the electron density reached a peak of about 400,000/cu cm, and then started decreasing approximately as t to the -2.4 as the cloud expanded. About 6 minutes after the explosion, the electron density suddenly began to increase, reached a secondary peak of about 240/cu cm, and then slowly decayed down to the preevent level over a period of about 15 minutes. The density increase is believed to be caused by the collapse of the ion cloud into the diamagnetic cavity created by the initial expansion. The plasma wave intensities observed during the entire event were quite low. In the diamagnetic cavity, electrostatic emissions were observed near the barium ion plasma frequency, and in another band at lower frequencies. A broadband burst of electrostatic noise was also observed at the boundary of the diamagnetic cavity. Except for electron plasma oscillations, no significant wave activity was observed outside of the diamagnetic cavity.

Gurnett, D. A.; Anderson, R. R.; Bernhardt, P. A.; Luehr, H.; Haerendel, G.

1986-01-01

444

Reduction behavior of barium hexaferrite into metallic iron nanocrystallites  

NASA Astrophysics Data System (ADS)

Barium hexaferrite (BaFe 12O 19) powder was prepared through the ceramic route by calcination of a stoichiometric mixture of barium carbonate and iron oxide at 1200 °C for 2 h. Compacts of synthesized BaFe 12O 19 powder were isothermally reduced in hydrogen atmosphere at 600-1000 °C. Based on thermogravimetric analysis, the reduction behavior of BaFe 12O 19 and reaction kinetics and mechanism were studied. The initial ferrite powder and the various reduction products were characterized by X-ray diffraction analysis,a scanning electron microscope and a vibrating sample magnetometer to reveal the effect of hydrogen reduction on composition, microstructure and magnetic properties. The reduction rate was found to be controlled by interfacial chemical reaction mechanism. Metallic iron was formed in nanosized regimes while grain growth and coalescence were observed at higher reduction temperatures. Magnetic measurements show diluted magnetic properties for the formed metallic iron, whereas coercivity values were in the range 14.1-55 Oe and saturation magnetization varied from 24.79 to 36.15 emu/g. These values have been ascribed to the formation and growth of nanosized metallic iron particles as the reduction treatment proceeded.

Bahgat, M.; Radwan, M.; Hessien, M. M.

2007-03-01

445

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. PMID:23847415

FarrokhTakin, Elmira; Ciofani, Gianni; Puleo, Gian Luigi; de Vito, Giuseppe; Filippeschi, Carlo; Mazzolai, Barbara; Piazza, Vincenzo; Mattoli, Virgilio

2013-01-01

446

[Optics heterodyne detection of the autoionization state of barium].  

PubMed

The autoionization state of barium was observed by optics heterodyne between three-photon resonant nondegenerated six-wave mixing (NSWM) and two-photon resonant nondegenerated four-wave mixing (NFWM). In this way, optics heterodyne spectrum of 6p(3/2) 19d autoionization state of barium was measured. The suppression and enhancement of the NFWM signal was observed which was caused by the quantum interference between NFWM and NSWM. Our method is a pure nonlinear optic technique. It has the advantages of excellent spatial signal resolution and simple optical alignment. Here two-photon resonant NFWM is used as local oscillation, while three-photon resonant NSWM signal is used as signal beam. Detection of autoionization states of Ba was achieved by changing the frequency of signal beam. The phase matching condition of this technique is not so stringent and can be achieved over a very wide frequency range, which is very difficult in the general six-wave mixing. Furthermore, the signal is coherent light. Optics heterodyne spectrum is a Doppler-free spectroscopy when the incident lasers have narrow bandwidths. PMID:18800690

Sun, Jiang; Su, Hong-xin; Wang, Yan-bang; Guo, Qing-lin; Zuo, Zhan-chun; Fu, Pan-ming

2008-06-01

447

Ruthenium and hafnium abundances in giant and dwarf barium stars  

E-print Network

We present abundances for Ru and Hf, compare them to abundances of other heavy elements, and discuss the problems found in determining Ru and Hf abundances with laboratory gf-values in the spectra of barium stars. We determined Ru and Hf abundances in a sample of giant and dwarf barium stars, by the spectral synthesis of two RuI (4080.574A and 4757.856A) and two HfII (4080.437A and 4093.155A) transitions. The stellar spectra were observed with FEROS/ESO, and the stellar atmospheric parameters lie in the range 4300 < Teff/K < 6500, -1.2 < [Fe/H] <= 0 and 1.4 <= log g < 4.6. The HfII 4080A and the RuI 4758A observed transitions result in a unreasonably high solar abundance, given certain known uncertainties, when fitted with laboratory gf-values. For these two transitions we determined empirical gf-values by fitting the observed line profiles of the spectra of the Sun and Arcturus. For the sample stars, this procedure resulted in a good agreement of Ru and Hf abundances given by the two availa...

Allen, D M

2007-01-01

448

Low density barium and bentonite mixture versus high density barium: a comparative study to optimize negative gastrointestinal contrast agents for MRI.  

PubMed

The purpose of this study was to compare the patient tolerance and efficacy, as magnetic resonance imaging negative oral contrast agents, of a mixture of clay compound bentonite and low density barium sulfate suspension with that of higher density barium sulfate. Twenty patients were randomized into two groups: 10 patients receiving a mixture of low concentration 60% w/v barium sulfate plus 2.5% w/v bentonite, and 10 patients receiving 220% w/v barium sulfate Liuqid-HD (E-Z-EM, Westbury, NY). Post-contrast Spin-echo (SE) T1- and T2-weighted images (WI) were obtained on a 1.0T magnet. Two independent readers scored the overall intraluminal signal intensity and delineation of the gastrointestinal tract and adjacent organs. Patient acceptance was evaluated via a short questionnaire, by recording spontaneous comments and documenting the quantity of contrast agent ingested. There was greater intraluminal bowel signal reduction and organ delineation with 220% w/v barium than with the barium-bentonite mixture on both SE T1WI (p = 0.03) and SE T2WI (p = 0.42). With both agents there was greater signal reduction on SE T2WI than SE T1WI. Higher scores for organ delineation for both contrast agents were seen with SE T1WI. With 220% w/v barium, there was significantly better delineation of the pancreatic body (p = 0.02) and pancreatic tail (p = 0.02) on T1WI compared with SE T2WI. With the barium-bentonite mixture, SE T1WI showed improved delineation of jejunum compared with SE T2WI (p = 0.03). There were no statistically significant differences between the volume of contrast ingested in the two groups. Abdominal cramps were recorded for one patient in each group. These results suggest that barium-bentonite mixture, although useful as a negative gastro-intestinal contrast agent, is not as effective as 220% w/v barium. Further studies with a larger patient population and concentration optimization studies are needed. PMID:9364949

Paley, M R; Nicolas, A I; Mergo, P J; Torres, G M; Burton, S S; Ros, P R

1997-01-01

449

Fabrication and characterization of cerium-doped barium titanate inverse opal by sol-gel method  

SciTech Connect

Cerium-doped barium titanate inverted opal was synthesized from barium acetate contained cerous acetate and tetrabutyl titanate in the interstitial spaces of a polystyrene (PS) opal. This procedure involves infiltration of precursors into the interstices of the PS opal template followed by hydrolytic polycondensation of the precursors to amorphous barium titanate and removal of the PS opal by calcination. The morphologies of opal and inverse opal were characterized by scanning electron microscope (SEM). The pores were characterized by mercury intrusion porosimetry (MIP). X-ray photoelectron spectroscopy (XPS) investigation showed the doping structure of cerium, barium and titanium. And powder X-ray diffraction allows one to observe the influence of doping degree on the grain size. The lattice parameters, crystal size and lattice strain were calculated by the Rietveld refinement method. The synthesis of cerium-doped barium titanate inverted opals provides an opportunity to electrically and optically engineer the photonic band structure and the possibility of developing tunable three-dimensional photonic crystal devices. - Graphical abstract: Cerium-doped barium titanate inverted opal was synthesized from barium acetate acid contained cerous acetate and tetrabutyl titanate in the interstitial spaces of a PS opal, which involves infiltration of precursors into the interstices of the PS opal template and removal of the PS opal by calcination.

Jin Yi [Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials, Science and Engineering, East China University of Science and Technology, Shanghai 200237 (China); Zhu Yihua [Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials, Science and Engineering, East China University of Science and Technology, Shanghai 200237 (China)], E-mail: yhzhu@ecust.edu.cn; Yang Xiaoling [Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials, Science and Engineering, East China University of Science and Technology, Shanghai 200237 (China); Li Chunzhong [Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials, Science and Engineering, East China University of Science and Technology, Shanghai 200237 (China); Zhou Jinghong [UNILAB, State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237 (China)

2007-01-15

450

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

451

The Effects of Capitation on Outpatient Mental Health Episodes of Children  

ERIC Educational Resources Information Center

We analyzed the effects of the Colorado Medicaid Capitation Program on the duration and services of over 21,000 outpatient mental health episodes for young children. The study spanned a three year period before and after capitation was implemented, and compared episodes of outpatient care for children from 14 capitated Community Mental Health…

Cohen, Edward; Snowden, Lonnie; Libby, Anne; Ma, Yifei

2006-01-01

452

An Uncontrolled Evaluation of Inpatient and Outpatient Cognitive-Behavior Therapy for Bulimia Nervosa  

Microsoft Academic Search

Inpatient (n = 27) and outpatient (n = 22) cognitive-behavior therapy programs for bulimia nervosa were evaluated in an uncontrolled experiment. Both treatment conditions included exposure with response prevention and cognitive restructuring. Inpatient treatment had a mean length of stay of 5 weeks. Outpatient treatment lasted 15 weeks. Both groups were followed after the end of treatment. The results showed

Donald A. Williamson; Rita C. Prather; Sandra M. Bennett; C. J. Davis; Philip C. Watkins; Charles E. Grenier

1989-01-01

453

UVA Department of Student Health Medical Guideline for Outpatient Treatment of Eating Disorders  

E-print Network

UVA Department of Student Health Medical Guideline for Outpatient Treatment of Eating Disorders In recognition of the complex and intensive treatment often required for individuals with an eating disorder to assist UVA staff in providing excellent outpatient care for students with eating disorders

Acton, Scott

454

Validation of the SETOC Instrument--Student Evaluation of Teaching in Outpatient Clinics  

ERIC Educational Resources Information Center

Purpose: There is a paucity of evaluation forms specifically developed and validated for outpatient settings. The purpose of this study was to develop and validate an instrument specifically for evaluating outpatient teaching, to provide reliable and valid ratings for individual and group feedback to faculty, and to identify outstanding teachers…

Zuberi, Rukhsana W.; Bordage, Georges; Norman, Geoffrey R.

2007-01-01

455

A Comparison of Outpatients with Intellectual Disability Receiving Specialised and General Services in Ontario's Psychiatric Hospitals  

ERIC Educational Resources Information Center

Background: This study compares outpatients with intellectual disability (ID) receiving specialised services to outpatients with ID receiving general services in Ontario's tertiary mental healthcare system in terms of demographics, symptom profile, strengths and resources, and clinical service needs. Methods: A secondary analysis of Colorado…

Lunsky, Y.; Gracey, C.; Bradley, E.; Koegl, C.; Durbin, J.

2011-01-01

456

Feasibility and cost-effectiveness of outpatient autotransplants in multiple myeloma.  

PubMed

This report summarizes 2 years experience in performing 336 autotransplant procedures in 251 consecutive patients with multiple myeloma, using high-dose melphalan at 200 mg/m2 in the context of a tandem transplant program. A total of 91 patients received 118 transplants as outpatients while the remaining 160 patients received 218 transplants as inpatients. Outpatients were more often younger, with better stem cell products, normal serum albumin and beta-2-microglobulin levels as well as chemotherapy-sensitive disease compared to inpatients. There were no differences in hematopoietic recovery and non-hematologic toxicities between outpatient and inpatient transplant recipients. Post-transplant febrile neutropenia and most other post-transplant toxicities were managed successfully in an ambulatory setting. Although liberal criteria were developed for hospitalization of outpatients, including clinical parameters as well as patient desire and physician/nurse judgement, only 21% of outpatients required admission after transplantation. Median hospital stay for these outpatients was 9 days, while inpatients were hospitalized for a median of 15 days (P = 0.0001). After adjusting for differences in disease and host features, our study showed outpatient management resulted in significant financial savings due to lower pharmacy (42%), hospitalization (50%) and pathology/laboratory charges (36%). We conclude that outpatient transplants should facilitate access to myeloablative therapy, thereby improving complete remission rates and survival of myeloma patients. PMID:9313876

Jagannath, S; Vesole, D H; Zhang, M; Desikan, K R; Copeland, N; Jagannath, M; Bracy, D; Jones, R; Crowley, J; Tricot, G; Barlogie, B

1997-09-01

457

Development of a Computerized Adverse Drug Event (ADE) Monitor in the Outpatient Setting  

Microsoft Academic Search

This paper describes the collaboration of Brigham and Women's Hospital and Regenstrief Institute to develop a computerized adverse drug event (ADE) monitor using electronic medical records from outpatient practices. We describe the steps involved in ADE monitor development and rule validation at large outpatient practices at Boston and Indianapolis. The final standard rule set adopted by both practice sites are

Andrew C. Seger; Tejal K. Gandhi; Carol Hope; J. Marc Overhage; Michael D. Murray; David Weber; Julie Fiskio; Evgenia Teal; David W. Bates

458

A computerized method for identifying incidents associated with adverse drug events in outpatients  

Microsoft Academic Search

Introduction: In inpatients, computer monitors have been used to improve the detection of adverse drug events (ADEs). However, similar programs have not been available in outpatients. Objective: To describe an approach for detecting incidents suggesting that an ADE may have occurred in outpatients by adapting methods from inpatient computer monitoring and developing terminology searches of electronic medical records. Methods: One

Benjamin Honigman; Patrice Light; Russel M. Pulling; David W. Bates

2001-01-01

459

Major depressive episodes with hypomanic symptoms are common among depressed outpatients  

Microsoft Academic Search

Depressive mixed states (major depressive episodes [MDE] with some hypomanic symptoms) are not classified in DSM-IV. The aim of the present study was to determine the prevalence of depressive mixed states in depressed outpatients, and to compare bipolar II with unipolar depressive mixed states. Seventy consecutive bipolar II and unipolar depressed outpatients were interviewed using the DSM-IV Structured Clinical Interview

Franco Benazzi

2001-01-01

460

Opioid prescription for terminally ill outpatients in a district of northern Italy: a retrospective survey  

Microsoft Academic Search

A retrospective survey of the opioid prescriptions issued for cancer outpatients (2125) of the Treviso district (Veneto Region, northern Italy) during the time period 1993–2000 was carried out with the specific aims to establish the rate of opioid prescription and verify whether terminally ill outpatients (1697) who had died by the end of December 2000 received adequate opioid prescription, as

Chiara Salvato; Gianfranco Aretini; Donatella Serraglia; Gianni Terrazzani; Patrizia Debetto; Pietro Giusti; Alessandro Chinellato

2003-01-01

461

Early Working Alliance in Outpatient Substance Abuse Treatment: Predicting Substance Use Frequency and Client Satisfaction  

ERIC Educational Resources Information Center

Background: The study examined the effect of the early working alliance on outcome in outpatient substance abuse treatment. Methods: A total of 327 clients and 33 therapists participated in the study. Data were collected in southern and western Finland in outpatient treatment units (N = 7). The dependent variables were percentage of days abstinent…

Knuuttila, Vesa; Kuusisto, Katja; Saarnio, Pekka; Nummi, Tapio

2012-01-01

462

Should Hospitals Keep Their Patients Longer? The Role of Inpatient and Outpatient Care in Reducing  

E-print Network

and outpatient interventions have practically identical impact on reducing readmis- sions. For heart attack day) versus providing outpatient interventions. We find that for heart failure patients, the inpatient. Introduction Section 3025 of the Patient Protection and Affordable Care Act (ACA), signed into law in March

Chan, Carri W.

463

Effect of early working alliance on retention in outpatient substance abuse treatment  

Microsoft Academic Search

This study examined the client–therapist early working alliance effect on retention in outpatient substance abuse treatment. The study was implemented on naturalistic principles adopting a prospective design. Data were collected in southern and western Finland in a multisite clinical trial including outpatient treatment units (N?=?7). The sample consisted of clients (N?=?327, 111 women, 216 men) starting a new treatment period.

Vesa Knuuttila; Katja Kuusisto; Pekka Saarnio; Tapio Nummi

2012-01-01

464

DISSOCIATIVE SYMPTOMS AND DISORDERS WITHIN AN ADULT OUTPATIENT POPULATION WITH SCHIZOPHRENIA  

Microsoft Academic Search

Objective: The objectives of this study were to determine the preva- lence of dissociative symptoms and disorders in an adult outpatient population with schizophrenia and to study the relationship between dissociative symptoms and positive and negative symptoms of schizophrenia. Method: Consenting adult outpatients with schizophrenia from the Kingston Psychiatric Hospital in Kingston, Ontario, were administered the Dissociative Experiences Scale (DES).

John Moise

465

Barium zirconate-titanate/barium calcium-titanate ceramics via sol-gel process: novel high-energy-density capacitors  

NASA Astrophysics Data System (ADS)

Lead-free barium zirconate-titanate/barium calcium-titanate, [(BaZr0.2Ti0.80)O3]1-x-[(Ba0.70Ca0.30)TiO3]x (x = 0.10, 0.15, 0.20) (BZT-BCT) ceramics with high dielectric constant, low dielectric loss and moderate electric breakdown field were prepared by the sol-gel synthesis technique. X-ray diffraction patterns revealed tetragonal crystal structure and this was further confirmed by Raman spectra. Well-behaved ferroelectric hysteresis loops and moderate polarizations (spontaneous polarization, Ps ~ 3-6 µC cm-2) were obtained in these BZT-BCT ceramics. Frequency-dependent dielectric spectra confirmed that ferroelectric diffuse phase transition (DPT) exists near room temperature. Scanning electron microscope images revealed monolithic grain growth in samples sintered at 1280 °C. 1000/? versus (T) plots revealed ferroelectric DPT behaviour with estimated ? values of ~1.52, 1.51 and 1.88, respectively, for the studied BZT-BCT compositions. All three compositions showed packing-limited breakdown fields of ~47-73 kV cm-1 with an energy density of 0.05-0.6 J cm-3 for thick ceramics (>1 mm). Therefore these compositions might be useful in Y5V-type capacitor applications.

Sreenivas Puli, Venkata; Kumar, Ashok; Chrisey, Douglas B.; Tomozawa, M.; Scott, J. F.; Katiyar, Ram S.

2011-10-01

466

An expanded delivery model for outpatient burn rehabilitation.  

PubMed

Despite the numerous multidisciplinary services burn centers provide, a number of challenges to obtaining optimal outcomes exist. The goal of this study was to overcome the barriers to effective burn rehabilitation by utilizing an expanded care coordinator (ECC) to supplement the existing outpatient services. In this between-group, single-blind, randomized, controlled trial, the control group (n = 41) received standard outpatient care and the experimental group (n = 40) received additional services provided by the ECC, including telephone calls at set intervals (24 hours postdischarge, 2, 4, 8, 12 weeks postdischarge and 5, 7, 9 months postdischarge). The ECC was trained in motivational interviewing, crisis intervention, and solution-focused counseling. He assisted patients before and after each clinic visit, coordinated outpatient services in their geographic area (physical and occupational therapy, counseling, primary care provider referrals, etc.), and helped develop problem-solving approaches to accomplish individualized goals. Outcome measures included patient identified goals utilizing the goal attainment scale, the urn-specific health scale-brief, the Short Form 12, a patient satisfaction survey, and a return to work survey. The average subject age was 43 years (SD = 16.9) with a mean TBSA of 19% (SD = 18.8). The average length of hospitalization was 36 days (SD = 42.9). The patient and injury characteristics were similar between the study groups. For the experimental group, 33% completed seven calls, with 23% completing all the eight calls. All were assessed using general linear models and were adjusted for sex, age, length of hospitalization, urban vs rural area of residence, %TBSA burn, and ethnicity. There was no difference between the control and experimental groups for any of the outcome measures at either 6 or 12 months postburn. No differences in outcomes between the groups were found. All participants appreciated the individualized goal setting process that was used as an outcome measure and this may have accounted for the similar outcomes in both the groups. (The measure may have been more of an intervention, thus contributing to the strength of the control group.) Although most patients with burn injuries may not need an intervention that is this intensive, a subset of patients at higher risk or with more severe injuries may benefit from more intensive and personalized services. Future research should examine the benefits of individual goal setting processes for all the patients and also attempt to identify those patients most at risk for poorer outcomes and therefore, likely to benefit of more intensive personalized services. PMID:25198101

Wiechman, Shelley A; Carrougher, Gretchen J; Esselman, Peter C; Klein, Matthew B; Martinez, Erin M; Engrav, Loren H; Gibran, Nicole S

2015-01-01

467

Predictors of patient satisfaction in an outpatient plastic surgery clinic.  

PubMed

Although outcome measurement in medical care has traditionally included various aspects of clinical and functional status, patient satisfaction is another important metric in the assessment of health care quality. Determining which factors contribute most to patient satisfaction can assist health care providers in improving care. In an era of diminishing resources, satisfaction ratings can further aid third-party payers in determining who provides those services. The authors used the ordinal logistic regression method to develop a predictive model for patient satisfaction in an outpatient plastic surgery clinic. Consecutive patients who attended a university outpatient plastic surgery clinic were asked to complete the Visit Specific Patient Satisfaction Questionnaire (VSQ) after their clinic visit. Type of clinic (e.g., hand clinic, aesthetic clinic, breast clinic) and demographic variables like age, gender, race, and education were added to the questionnaire to control for possible confounding effects. The authors constructed an ordinal logistic regression model using the overall visit response as the dependent variable and the eight other response categories as independent variables. A total of 345 patients completed the VSQ, which takes each patient less than 2 minutes to complete. The patient response rate was more than 95%. Statistically significant predictors included (1) personal manner of physician (odds ratio [OR], 18.0; p = 0.0002), (2) time spent with physician (OR, 4.7; p = 0.0099), (3) length of time to get an appointment (OR, 4.6; p = 0.0055), and (4) explanation of what was done (OR, 3.9; p = 0.0263). There was no statistically significant association between overall satisfaction scores and the following factors: (1) length of wait in the clinic (OR, 2.7; p = 0.0747), (2) getting through to the clinic by phone (OR, 0.71; p = 0.5439), (3) convenience of the clinic's location (OR, 2.3; p = 0.1368), and (4) technical skills of the physician (OR, 1.0; p = 0.9974). The predictive model was adjusted for possible confounding due to the type of clinic and demographic variables. In this study the most important predictors of patient satisfaction were those related to efficient clinic operation (scheduling of appointments and clinic waiting time) and the quality of the patient-physician interaction. Clinic facilities (like clinic location and ease of phone contact) were not significant predictors. Because patients often have difficulty assessing the technical skills of physicians, this variable was not a significant predictor. To improve patient satisfaction in plastic surgery outpatient clinics, efforts and resources should be directed toward expedient and empathic delivery of care. PMID:9972719

Chung, K C; Hamill, J B; Kim, H M; Walters, M R; Wilkins, E G

1999-01-01

468

Comparison of outpatient point of care glucose testing vs venous glucose in the clinical laboratory.  

PubMed

The purpose of this study was to evaluate the accuracy of glucometers in assessing glucose levels in outpatients. The investigation consisted in the analysis of retrospective validation data (obtained at the Clinical Laboratory of the Puerto Rico Medical Services Administration) and the analysis of data obtained from forty outpatients. Glucose concentration was obtained from these outpatient samples using the patients' glucometers and a clinical laboratory analyzer (hexokinase method). Statistical analysis included descriptive and correlation measures and t-test. Results revealed that accurate glucose values were obtained by the glucometers utilized in both the validation process and the outpatients (POCT) procedure. The investigation also demonstrated the need by outpatients to receive proper training in handling their glucometers. PMID:14768505

Velázquez Medina, Diana; Climent, Consuelo

2003-12-01

469

IMAGING DIAGNOSIS-DUODENOBILIARY REFLUX OF BARIUM SULFATE DURING ESOPHAGOGASTROGRAPHY IN A DOG.  

PubMed

A 4-year-old Australian cattle dog presented for regurgitation, 2 months after duodenal resection and anastomosis for a perforated duodenal ulcer. Duodenobiliary reflux of barium sulfate suspension was detected during fluoroscopic esophagogastrography. Follow-up radiography 2 hours later demonstrated persistence of the barium in the gallbladder and biliary tree. Ultrasonography showed an open sphincter of Oddi but no other morphological abnormalities with the gallbladder or biliary system. No side effects or bloodwork abnormalities were noted. This is the first case report of duodenobiliary reflux of barium in a dog. The pathophysiology of this phenomenon and its incidence and significance in human medicine are discussed. PMID:25066011

Shaikh, Layla; Sharma, Ajay; Secrest, Scott

2014-07-26

470

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

471

42 CFR 410.27 - Outpatient hospital or CAH services and supplies incident to a physician or nonphysician...  

Code of Federal Regulations, 2010 CFR

...hospital or CAH or in a department of the hospital or CAH, as defined in...on-campus outpatient department of the hospital or CAH, as defined...off-campus outpatient department of the hospital or CAH, as defined...

2010-10-01

472

78 FR 73547 - Medicare Program; Semi-Annual Meeting of the Advisory Panel on Hospital Outpatient Payment (HOP...  

Federal Register 2010, 2011, 2012, 2013

...the Advisory Panel on Hospital Outpatient Payment...Medicaid Services (CMS), Department of Health and Human Services...the Advisory Panel on Hospital Outpatient Payment...the Secretary of the Department of Health and Human...

2013-12-06

473

76 FR 15349 - Fiscal Year 2010 Cost of Outpatient Medical, Dental, and Cosmetic Surgery Services Furnished by...  

Federal Register 2010, 2011, 2012, 2013

...Year 2010 Cost of Outpatient Medical, Dental, and Cosmetic Surgery Services Furnished by Department of Defense Medical Treatment...persons for the cost of outpatient medical, dental and cosmetic surgery services furnished by military treatment facilities...

2011-03-21

474

Psychiatric Diagnoses among an HIV-Infected Outpatient Clinic Population.  

PubMed

As individuals with HIV infection are living longer, the management of psychiatric disorders has increasingly been incorporated into comprehensive care. Individuals were recruited from an outpatient HIV clinic to assess the prevalence and related associations of current psychiatric disorders and biomarkers. Of the 201 participants who completed the interviews, the median age was 43.5 years, and the majority was male and African American. Most were receiving HIV therapy and 78% of those had achieved virologic suppression. Prevalent psychiatric diagnoses included major depressive disorder, generalized anxiety, and agoraphobia. Alcohol and cocaine/crack abuse and dependence were common substance use disorders. Current receipt of HIV therapy was less common among those diagnosed with generalized anxiety disorder. Agoraphobia was the only disorder associated with unsuppressed viral load. Psychiatric and substance use disorders are highly prevalent among an urban HIV clinic population, although we identified few associations between psychiatric diagnoses and HIV diseases status. PMID:25348798

Shacham, Enbal; Onen, Nur F; Donovan, Michael F; Rosenburg, Neal; Overton, E Turner

2014-10-27

475

Outpatient Treatment for Humeral Fractures in Five Calves  

PubMed Central

ABSTRACT Humeral fractures were treated in 5 calves using unilateral external fixation with epoxy putty fixator (type I). The surgeries were performed under sedation and analgesia, and it involved application of ultrasound-guided brachial plexus block. The surgical procedures were completed in 60 to 90 min, and each calf was returned to the farm on the same day. The fixation allowed each calf to remain with the dam and suckle without strict stall rest and was removed 11 to 62 days post-surgery. The clinical sign of diminished radial nerve function disappeared 40 days to 4 months post-surgery. These observations suggest that this repair technique represents a feasible outpatient treatment for humeral fractures in calves. PMID:25056675

YAMAGISHI, Norio; DEVKOTA, Bhuminand; TAKAHASHI, Masahiro

2014-01-01

476

Magnetic properties of Ni substituted Y-type barium ferrite  

SciTech Connect

Y-type barium hexaferrite is attractive material for various applications, such as high frequency antennas and RF devices, because of its interesting magnetic properties. Especially, Ni substituted Y- type hexaferrites have higher magnetic ordering temperature than other Y-type. We have investigated macroscopic and microscopic properties of Y-type barium hexaferrite. Ba{sub 2}Co{sub 2?x}Ni{sub x}Fe{sub 12}O{sub 22} (x?=?0, 0.5, 1.0, 1.5, and 2.0) samples are prepared by solid-state reaction method and studied by X-ray diffraction (XRD), vibrating sample magnetometer, and Mössbauer spectroscopy, as well as a network analyzer for high frequency characteristics. The XRD pattern is analyzed by Rietveld refinement method and confirms the hexagonal structure with R-3m. The hysteresis curve shows ferrimagnetic behavior. Saturation magnetization (M{sub s}) decreases with Ni contents. Ni{sup 2+}, which preferentially occupies the octahedral site with up-spin sub-lattice, has smaller spin value S of 1 than Co{sup 2+} having S?=?3/2. The zero-field-cooled (ZFC) measurement of Ba{sub 2}Co{sub 1.5}Ni{sub 0.5}Fe{sub 12}O{sub 22} shows that Curie and spin transition temperatures are found to be 718?K and 209?K, respectively. The Curie temperature T{sub C} is increased with Ni contents, while T{sub S} is decreased with Ni. The Mössbauer spectra were measured at various temperatures and fitted by using a least-squares method with six sextet of six Lorentzian lines for Fe sites, corresponding to the 3b{sub VI}, 6c{sub IV}*, 6c{sub VI}, 18h{sub VI}, 6c{sub IV}, and 3a{sub IV} sites at below T{sub C}. From Mössbauer measurements, we confirmed the spin state of Fe ion to be Fe{sup 3+} and obtained the isomer shift (?), magnetic hyperfine field (H{sub hf}), and the occupancy ratio of Fe ions at six sub-lattices. The complex permeability and permittivity are measured between 100?MHz and 4?GHz, suggesting that Y-type barium hexaferrite is promising for antenna applications in UHF band.

Won, Mi Hee; Kim, Chul Sung, E-mail: cskim@kookmin.ac.kr [Department of Physics, Kookmin University, Seoul 136-702 (Korea, Republic of)

2014-05-07

477

Magnetic properties of Ni substituted Y-type barium ferrite  

NASA Astrophysics Data System (ADS)

Y-type barium hexaferrite is attractive material for various applications, such as high frequency antennas and RF devices, because of its interesting magnetic properties. Especially, Ni substituted Y- type hexaferrites have higher magnetic ordering temperature than other Y-type. We have investigated macroscopic and microscopic properties of Y-type barium hexaferrite. Ba2Co2-xNixFe12O22 (x = 0, 0.5, 1.0, 1.5, and 2.0) samples are prepared by solid-state reaction method and studied by X-ray diffraction (XRD), vibrating sample magnetometer, and Mössbauer spectroscopy, as well as a network analyzer for high frequency characteristics. The XRD pattern is analyzed by Rietveld refinement method and confirms the hexagonal structure with R-3m. The hysteresis curve shows ferrimagnetic behavior. Saturation magnetization (Ms) decreases with Ni contents. Ni2+, which preferentially occupies the octahedral site with up-spin sub-lattice, has smaller spin value S of 1 than Co2+ having S = 3/2. The zero-field-cooled (ZFC) measurement of Ba2Co1.5Ni0.5Fe12O22 shows that Curie and spin transition temperatures are found to be 718 K and 209 K, respectively. The Curie temperature TC is increased with Ni contents, while TS is decreased with Ni. The Mössbauer spectra were measured at various temperatures and fitted by using a least-squares method with six sextet of six Lorentzian lines for Fe sites, corresponding to the 3bVI, 6cIV*, 6cVI, 18hVI, 6cIV, and 3aIV sites at below TC. From Mössbauer measurements, we confirmed the spin state of Fe ion to be Fe3+ and obtained the isomer shift (?), magnetic hyperfine field (Hhf), and the occupancy ratio of Fe ions at six sub-lattices. The complex permeability and permittivity are measured between 100 MHz and 4 GHz, suggesting that Y-type barium hexaferrite is promising for antenna applications in UHF band.

Won, Mi Hee; Kim, Chul Sung

2014-05-01

478

Ruthenium and hafnium abundances in giant and dwarf barium stars  

E-print Network

We present abundances for Ru and Hf, compare them to abundances of other heavy elements, and discuss the problems found in determining Ru and Hf abundances with laboratory gf-values in the spectra of barium stars. We determined Ru and Hf abundances in a sample of giant and dwarf barium stars, by the spectral synthesis of two RuI (4080.574A and 4757.856A) and two HfII (4080.437A and 4093.155A) transitions. The stellar spectra were observed with FEROS/ESO, and the stellar atmospheric parameters lie in the range 4300 < Teff/K < 6500, -1.2 < [Fe/H] <= 0 and 1.4 <= log g < 4.6. The HfII 4080A and the RuI 4758A observed transitions result in a unreasonably high solar abundance, given certain known uncertainties, when fitted with laboratory gf-values. For these two transitions we determined empirical gf-values by fitting the observed line profiles of the spectra of the Sun and Arcturus. For the sample stars, this procedure resulted in a good agreement of Ru and Hf abundances given by the two available lines. The resulting Ru and Hf abundances were compared to those of Y, Nd, Sm and Eu. In the solar system Ru, Sm and Eu are dominated by the r-process and Hf, Nd and Y by the s-process, and all of these elements are enhanced in barium stars since they lie inside the s-process path. Ru abundances show large scatter when compared to other heavy elements, whereas Hf abundances show less scatter and closely follow the abundances of Sm and Nd, in good agreement with theoretical expectations. We also suggest a possible, unexpected, correlation of Ru and Sm abundances. The observed behaviour in abundances is probably due to variations in the 13C pocket efficiency in AGB stars, and, though masked by high uncertainties, hint at a more complex scenario than proposed by theory.

D. M. Allen; G. F. Porto de Mello

2007-08-13

479

Association between autoimmune thyroiditis and depressive disorder in psychiatric outpatients.  

PubMed

Thyroid diseases are often associated with psychiatric disorders. The prevalence of autoimmune thyroiditis in the general population is estimated to be at about 5-14 %. A clinical study was conducted to evaluate the association between autoimmune thyroiditis and depression in psychiatric outpatients. Fifty-two patients with depression and nineteen patients with schizophrenia (serving as control group), attending a psychiatric outpatient unit, were included. In addition to the measurement of thyroid-stimulating hormone (TSH), free triiodothyronine, free thyroxine, antithyroid peroxidase (anti-TPO) antibodies, and anti-thyroglobulin antibodies, ultrasound examination of the thyroid gland was performed. The proportion of pathologically increased anti-TPO levels in patients with depression was high. Furthermore, the distribution of pathologically increased anti-TPO levels was significantly (? (2) = 5.5; p = 0.019) different between patients with depression (32.7 %) and patients with schizophrenia (5.3 %). In a gender- and age-adjusted logistic regression, the odds ratio of uni- or bipolar patients with depression for an autoimmune thyroiditis was ten times higher (95 % CI = 1.2-85.3) when compared with schizophrenia patients. TSH basal level did not differ between patients with depression and patients with schizophrenia. Our study demonstrates a strong association between anti-TPO levels, which are considered to be of diagnostic value for autoimmune thyroiditis (in combination with a hypoechoic thyroid in ultrasonography) with uni- or bipolar depression. It should be noted that the routinely measured TSH level is not sufficient in itself to diagnose this relevant autoimmune comorbidity. PMID:25193677

Degner, Detlef; Haust, Merle; Meller, Johannes; Rüther, Eckart; Reulbach, Udo

2015-02-01

480

Prognosis of CKD Patients Receiving Outpatient Nephrology Care in Italy  

PubMed Central

Summary Background and objectives Prognosis in nondialysis chronic kidney disease (CKD) patients under regular nephrology care is rarely investigated. Design, setting, participants, & measurements We prospectively followed from 2003 to death or June 2010 a cohort of 1248 patients with CKD stages 3 to 5 and previous nephrology care ?1 year in 25 Italian outpatient nephrology clinics. Cumulative incidence of ESRD or death before ESRD were estimated using the competing-risk approach. Results Estimated rates (per 100 patient-years) of ESRD and death 8.3 (95% confidence interval [CI], 7.4 to 9.2) and 5.9 (95% CI 5.2 to 6.6), respectively. Risk of ESRD and death increased progressively from stages 3 to 5. ESRD was more frequent than death in stage 4 and 5 CKD, whereas the opposite was true in stage 3 CKD. Younger age, lower body mass index, proteinuria, and high phosphate predicted ESRD, whereas older age, diabetes, previous cardiovascular disease, ESRD, proteinuria, high uric acid, and anemia predicted death (P < 0.05 for all). Among modifiable risk factors, proteinuria accounted for the greatest contribution to the model fit for either outcome. Conclusions In patients receiving continuity of care in Italian nephrology clinics, ESRD was a more frequent outcome than death in stage 4 and 5 CKD, but the opposite was true in stage 3. Outcomes were predicted by modifiable risk factors specific to CKD. Proteinuria used in conjunction with estimated GFR refined risk stratification. These findings provide information, specific to CKD patients under regular outpatient nephrology care, for risk stratification that complement recent observations in the general population. PMID:21817127

Chiodini, Paolo; Zoccali, Carmine; Borrelli, Silvio; Cianciaruso, Bruno; Di Iorio, Biagio; Santoro, Domenico; Giancaspro, Vincenzo; Abaterusso, Cataldo; Gallo, Ciro; Conte, Giuseppe; Minutolo, Roberto

2011-01-01

481

F + center as a paramagnetic probe in the EPR investigation of barium hexaaluminate phases I and II and barium-lanthanum hexaaluminate ceramics  

NASA Astrophysics Data System (ADS)

An X-ray-induced F + center is used as a paramagnetic probe to study sintered powders of barium hexaaluminates phases I and II (referred to as Ba( ?I) and Ba( ?II)) and mixed barium-lanthanum hexaaluminate (referred to as BLA). This F + center was previously shown to exist only in ?-alumina-type mirror planes containing interstitial oxygen ions as charge-compensating defects, so that its study yields information about the local structure of this type of mirror plane. By comparison of the EPR spectra of Ba( ?I) and Ba( ?II) it is shown that the latter contains only one type of F + center with a reduced hf interaction. This indicates that there is only one type of mirror plane containing interstitial oxygen in Ba( ?II) and that the separation between spinel blocks is larger in Ba( ?II) than in Ba( ?I). This result agrees with models proposed by other authors for barium-lead hexaaluminate and barium hexagallate. Investigation of the F + center in mixed barium-lanthanum hexaaluminate ceramics clearly supports the hypothesis of segregation of Ba 2+ ions in ?-alumina-type mirror planes. It is also shown that the structure of these planes is very similar to that of Ba( ?II) defect planes.

Gbehi, T.; Gourier, D.; Thery, J.; Vivien, D.

1989-12-01

482

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

483

Barium titanate nanocomposite capacitor FY09 year end report.  

SciTech Connect

This late start RTBF project started the development of barium titanate (BTO)/glass nanocomposite capacitors for future and emerging energy storage applications. The long term goal of this work is to decrease the size, weight, and cost of ceramic capacitors while increasing their reliability. Ceramic-based nanocomposites have the potential to yield materials with enhanced permittivity, breakdown strength (BDS), and reduced strain, which can increase the energy density of capacitors and increase their shot life. Composites of BTO in glass will limit grain growth during device fabrication (preserving nanoparticle grain size and enhanced properties), resulting in devices with improved density, permittivity, BDS, and shot life. BTO will eliminate the issues associated with Pb toxicity and volatility as well as the variation in energy storage vs. temperature of PZT based devices. During the last six months of FY09 this work focused on developing syntheses for BTO nanoparticles and firing profiles for sintering BTO/glass composite capacitors.

Stevens, Tyler E.; DiAntonio, Christopher Brian; Yang, Pin; Chavez, Tom P.; Winter, Michael R.; Monson, Todd C.; Roesler, Alexander William; Fellows, Benjamin D.

2009-11-01

484

Pulsating aurora induced by upper atmospheric barium releases  

NASA Technical Reports Server (NTRS)

The paper reports the apparent generation of pulsating aurora by explosive releases of barium vapor near 250 km altitude. This effect occurred only when the explosions were in the path of precipitating electrons associated with the visible aurora. Each explosive charge was a standard 1.5 kg thermite mixture of Ba and CuO with an excess of Ba metal which was vaporized and dispersed by the thermite explosion. Traces of Sr, Na, and Li were added to some of the charges, and monitoring was achieved by ground-based spectrophotometric observations. On March 28, 1976, an increase in emission at 5577 A and at 4278 A was observed in association with the first two bursts, these emissions pulsating with roughly a 10 sec period for approximately 60 to 100 sec after the burst.

Deehr, C.; Romick, G.

1977-01-01

485

Laser isotope separation of barium using an inhomogeneous magnetic field  

NASA Astrophysics Data System (ADS)

A barium atomic beam undergoes selective isotopic excitation by a dye laser to the 1P1 state. This state radiatively decays back to the ground state or to the (6s5d)D states, which are deflected out of the beam by an inhomogeneous magnetic field. The residual atomic beam is examined by a quadrupole mass spectrometer, and isotopic depletions of up to 60% are obtained using laser powers of a few hundred milliwatts. The isotopic splitting of the 1S0-->1P1 transitions for 136Ba and the F=5/2 states of 135,137Ba are measured relative to that for 138Ba and agree well with those found previously.

van Wijngaarden, W. A.; Li, J.

1994-02-01

486

Studies on immobilization of thorium in barium borosilicate glass  

NASA Astrophysics Data System (ADS)

The barium borosilicate glass (BBS) matrix has shown considerable solubility of ThO 2 at 1000 °C. As seen by X-ray diffractometry (XRD) and Electron probe micro analysis (EPMA) up to 15.86 wt% of ThO 2 could be dissolved in this matrix. The homogeneity of thoria loaded glass was convincingly ascertained by EPMA. Attempts to load more than 16 wt% ThO 2 led to the phase separation of crystalline phases identified as major phase of ThO 2 and minor percentage of ThSiO 4 phase with altogether different morphologies, as seen by XRD. Interestingly, the back scattered images of thorite crystals point towards the presence of chemical zoning. The results being reported in this paper are of interest especially with respect to immobilization of other actinides in borosilicate glass matrix.

Mishra, R. K.; Sengupta, Pranesh; Kaushik, C. P.; Tyagi, A. K.; Kale, G. B.; Raj, Kanwar

2007-02-01

487

Impact of vanadium ions in barium borate glass  

NASA Astrophysics Data System (ADS)

Combined optical and infrared spectral measurements of prepared barium borate glasses containing different concentrations of V2O5 were carried out. Vanadium containing glasses exhibit extended UV-visible (UV/Vis.) bands when compared with base binary borate glass. UV/Vis. spectrum shows the presence of an unsymmetrical strong UV broad band centered at 214 nm attributed to the presence of unavoidable trace iron impurities within the raw materials used for the preparation of such glass. The calculated direct and indirect optical band gaps are found to decrease with increasing the vanadium content (2.9:137 for indirect and 3.99:2.01 for direct transition). This change was discussed in terms of structural changes in the glass network. Infrared absorption spectra of the glasses reveal the appearance of both triangular and tetrahedral borate units. Electron spin resonance analyses indicate the presence of unpaired species in sufficient quantity to be identified and to confirm the spectral data.

Abdelghany, A. M.; Hammad, Ahmed H.

2015-02-01

488

Preparation and Characterization of Nano-particle Substituted Barium Hexaferrite  

E-print Network

High density magnetic recording requires high coercivity magnetic media and small particle size. Barium hexaferrite has been considered as a leading candidate material because of its chemical stability, fairly large crystal anisotropy and suitable magnetic characteristics. In this work, we present the preparation of the hexagonal ferrite BaFe12O19 and one of its derivative; the Zn-Sn substituted hexaferrite by the chemical co-precipitation method. The main advantage of this method on the conventional glass-ceramic one, resides in providing a small enough particle size for magnetic recording. We demonstrate using the X-ray diffraction patterns that the particle size decreases when substituting the hexaferrite by the Zn-Sn combination. This may improve the magnetic properties of the hexaferrite as a medium for HD magnetic recording

Atassi, Yomen; Tally, Mohammad

2014-01-01

489

Tunability and relaxor properties of ferroelectric barium stannate titanate ceramics  

NASA Astrophysics Data System (ADS)

Barium stannate titanate [Ba(SnxTi1-x)O3, x =0.1, 0.2, 0.3, and 0.4] ceramics were prepared using a conventional solid-state reaction process. Their dielectric properties were measured under direct current bias fields ranging from 0to2.5kV/cm. A transformation from normal to relaxor ferroelectrics was observed when x ?0.3. Broken long-range order or "dirty" ferroelectric domains and nanodomains were observed in Ba(Sn0.1Ti0.9)O3 and Ba(Sn0.4Ti0.6)O3 by transmission electron microscopy, respectively. Voltage driven tunability was found to decrease with increasing Sn content. The change from normal ferroelectric into relaxor ferroelectric had a negative impact on the tunability value of the materials.

Lu, S. G.; Xu, Z. K.; Chen, Haydn

2004-11-01

490

Isothermal relaxation of field-biased barium stannate titanate  

NASA Astrophysics Data System (ADS)

The isothermal time dependences of the dielectric constant and the discharging current of barium stannate titanate ceramics after application or removal of a step field were investigated in both ferroelectric and paraelectric temperature regions. The experimental results exhibited a substantial difference for these two phases. For the ferroelectric phase, the relaxation of the dielectric constant is weak and the discharging current obeys Hammon's model. While for the paraelectric phase, the relaxation is relatively strong and the discharging current obeys the complex exponential decay model. The relaxation of the field-induced piezoelectric resonance indicated the first relaxation observed in a paraelectric phase sample corresponding to homocharges. The authors proposed that the transportation of homocharges is the microscopic origin of the strong relaxation observed in the paraelectric phase.

Wei, Xiaoyong; Jin, Li; Yao, Xi

2005-08-01

491

Barium depletion study on impregnated cathodes and lifetime prediction  

NASA Astrophysics Data System (ADS)

In the thermionic cathodes used in cathode ray-tubes (CRTs), barium is the key element for the electronic emission. In the case of the dispenser cathodes made of a porous tungsten pellet impregnated with Ba, Ca aluminates, the evaporation of Ba determines the cathode lifetime with respect to emission performance in the CRT. The Ba evaporation results in progressive depletion of the impregnating material inside the pellet. In the present work, the Ba depletion with time has been extensively characterized over a large range of cathode temperature. Calculations using the depletion data allowed modeling of the depletion as a function of key parameters. The link between measured depletion and emission in tubes has been established, from which an end-of-life criterion was deduced. Taking modeling into account, predicting accelerated life-tests were performed using high-density maximum emission current (MIK).

Roquais, J. M.; Poret, F.; le Doze, R.; Ricaud, J. L.; Monterrin, A.; Steinbrunn, A.

2003-06-01

492

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

493

An Association between Air Pollution and Daily Outpatient Visits for Respiratory Disease in a Heavy Industry Area  

PubMed Central

In this work we used daily outpatient data from the Landseed Hospital in a heavily industrial area in northern Taiwan to study the associations between daily outpatient visits and air pollution in the context of a heavily polluted atmospheric environment in Chung-Li area during the period 2007–2011. We test the normality of each data set, control for the confounding factors, and calculate correlation coefficient between the outpatient visits and air pollution and meteorology, and use multiple linear regression analysis to seek significance of these associations. Our results show that temperature and relative humidity tend to be negatively associated with respiratory diseases. NO and are two main air pollutants that are positively associated with respiratory diseases, followed by , , , CO, and . Young outpatients (age 0–15 years) are most sensitive to changing air pollution and meteorology factors, followed by the eldest (age 66 years) and age 16–65 years of outpatients. Outpatients for COPD diseases are most sensitive to air pollution and meteorology factors, followed by allergic rhinitis, asthma, and pneumonia diseases. In the context of sex difference to air pollution and meteorological factors, male outpatients are more sensitive than female outpatients in the 16–65 age groups, while female outpatients are more sensitive than male outpatients in the young 0–15 age groups and in the eldest age groups. In total, female outpatients are more sensitive to air pollution and meteorological factors than male outpatients. PMID:24204573

Wang, Kuo-Ying; Chau, Tang-Tat

2013-01-01

494

Barium tagging in solid xenon for the EXO experiment  

NASA Astrophysics Data System (ADS)

Neutrinoless double beta decay experiments are searching for rare decay modes never before observed to uncover the absolute mass of the neutrino, as well as to discover if it is a Majorana fermion. Detection of the daughter nucleus can help provide positive identification of this event over most radioactive backgrounds. The goal of the Enriched Xenon Observatory (EXO) is to measure the rate of 0nubetabeta decay in 136Xe, incorporating 136Ba daughter identification by laser induced fluorescence spectroscopy. Here, we investigate a technique in which the 136Ba daughter is grabbed with a cryogenic probe by freezing it in solid xenon ice, and detected directly in the solid xenon. The absorption and fluorescence spectra of barium in solid xenon were observed for the first time in this work. Identification of the 6s 2 1S0 ? 6s6p 1P 1 transition in both absorption (558 nm) and emission spectra (594 nm) were made. Additional blue absorption and emission lines were observed, but their transitions were not identified. Saturation of the 6s2 1S0 ? 6s6p 1P1 transition was not observed with increased excitation rates using resonance excitation at 558˜nm. From this a limit on the metastable decay rate was deduced to be greater than 104 s-1. Finally a fluorescence spectrum was obtained from a sample with only 20,000 atoms in the laser beam. With potential improvements of 107 in detection efficiency, single barium atom detection seems possible in solid xenon. A fiber probe detector based on a bare single mode fiber was also constructed and tested with fluorescing dye molecules. Successful detection of a few dye molecules in solution at the probe tip was demonstrated.

Mong, Brian

2011-07-01

495

SBN60, strontium-barium niobate at 100?K  

PubMed Central

The title compound, Sr0.6Ba0.4Nb2O6 (strontium barium niobium oxide), belongs to the group of strontium–barium niobates with varying composition of Sr and Ba. Their general formula can be written as SrxBa1 - xNb2O6. Below the Curie temperature, T c, these materials indicate ferroelectric properties. The Curie temperature for SBN60 is equal to 346±0.5?K so the structure is in the ferroelectric phase at the measurement temperature of 100?K. Characteristic for this family of compounds is the packing along the z-axis. The NbO6 corner-sharing octa­hedra surround three types of vacancy tunnels with penta­gonal, square and triangular shapes. The Sr2+ ions partially occupy two unique sites, the first one located inside the penta­gon and the second one in the square tunnels. Consequently, they are situated on the mirror plane and the inter­section of two glide planes, respectively. The site inside the penta­gonal tunnel is additionally disordered so that the same position is shared by Ba2+ and Sr2+ ions whereas another part of the Ba2+ ion occupies a different position (relative occupancies 0.43:0.41:0.16). One of the NbV atoms and three of the O2? ions occupy general positions. The second NbV atom is located on the inter­section of the mirror planes. Two remaining O2? ions are located on the same mirror plane. Only the NbV atom and one of the O2? ions which is located on the mirror plane are not disordered. Each of the remaining O2? ions is split between two sites, with relative occupancies of 0.52:0.48 (O2? ions in general positions) and 0.64:0.36 (O2? ion on the mirror plane). PMID:24098159

Stachowicz, Marcin; Gawryszewska, Olga; Swirkowicz, Marek A.; Lukasiewicz, Tadeusz

2013-01-01

496

SBN60, strontium-barium niobate at 100?K.  

PubMed

The title compound, Sr0.6Ba0.4Nb2O6 (strontium barium niobium oxide), belongs to the group of strontium-barium niobates with varying composition of Sr and Ba. Their general formula can be written as Sr x Ba1 - x Nb2O6. Below the Curie temperature, T c , these materials indicate ferroelectric properties. The Curie temperature for SBN60 is equal to 346±0.5?K so the structure is in the ferroelectric phase at the measurement temperature of 100?K. Characteristic for this family of compounds is the packing along the z-axis. The NbO6 corner-sharing octa-hedra surround three types of vacancy tunnels with penta-gonal, square and triangular shapes. The Sr(2+) ions partially occupy two unique sites, the first one located inside the penta-gon and the second one in the square tunnels. Consequently, they are situated on the mirror plane and the inter-section of two glide planes, respectively. The site inside the penta-gonal tunnel is additionally disordered so that the same position is shared by Ba(2+) and Sr(2+) ions whereas another part of the Ba(2+) ion occupies a different position (relative occupancies 0.43:0.41:0.16). One of the Nb(V) atoms and three of the O(2-) ions occupy general positions. The second Nb(V) atom is located on the inter-section of the mirror planes. Two remaining O(2-) ions are located on the same mirror plane. Only the Nb(V) atom and one of the O(2-) ions which is located on the mirror plane are not disordered. Each of the remaining O(2-) ions is split between two sites, with relative occupancies of 0.52:0.48 (O(2-) ions in general positions) and 0.64:0.36 (O(2-) ion on the mirror plane). PMID:24098159

Stachowicz, Marcin; Gawryszewska, Olga; Swirkowicz, Marek A; Lukasiewicz, Tadeusz

2013-01-01

497

Health Services OutPatient Experience questionnaire: factorial validity and reliability of a patient-centered outcome measure for outpatient settings in Italy  

PubMed Central

Purpose The patient-centered approach to health care does not seem to be sufficiently developed in the Italian context, and is still characterized by the biomedical model. In addition, there is a lack of validated outcome measures to assess outpatient experience as an aspect common to a variety of settings. The current study aimed to evaluate the factorial validity, reliability, and invariance across sex of the Health Services OutPatient Experience (HSOPE) questionnaire, a short ten-item measure of patient-centeredness for Italian adult outpatients. The rationale for unidimensionality of the measure was that it could cover global patient experience as a process common to patients with a variety of diseases and irrespective of the phase of treatment course. Patients and methods The HSOPE was compiled by 1,532 adult outpatients (51% females, mean age 59.22 years, standard deviation 16.26) receiving care in ten facilities at the Santa Maria alle Scotte University Hospital of Siena, Italy. The sample represented all the age cohorts. Twelve percent were young adults, 57% were adults, and 32% were older adults. Exploratory and confirmatory factor analyses were conducted to evaluate factor structure. Reliability was evaluated as internal consistency using Cronbach’s ?. Factor invariance was assessed through multigroup analyses. Results Both exploratory and confirmatory analyses suggested a clearly defined unidimensional structure of the measure, with all the ten items having salient loadings on a single factor. Internal consistency was excellent (?=0.95). Indices of model fit supported a single-factor structure for both male and female outpatient groups. Young adult outpatients had significantly lower scores on perceived patient-centeredness relative to older adults. No significant difference emerged on patient-centeredness between male and female outpatients. Conclusion The HSOPE questionnaire seemed to be a tool with high acceptability and excellent psychometric properties to measure patient-centeredness as a unidimensional construct. Limitations and implications for future research are discussed. PMID:25228826

Coluccia, Anna; Ferretti, Fabio; Pozza, Andrea

2014-01-01

498

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

499

VizieR Online Data Catalog: Barium abundances in Cepheids (Andrievsky+, 2013)  

NASA Astrophysics Data System (ADS)

We derived the barium atmospheric abundances for a large sample of Cepheids, comprising 270 stars. The sample covers a large range of Galactocentric distances, from about 4 to 15kpc, so it is appropriate to investigate the existence of radial barium abundance gradients in the Galactic disc. In fact, this is the first time that such a comprehensive analysis of the distribution of barium abundances in the Galactic disc has been carried out. As a result, we conclude that the Ba abundance distribution can be characterized by a zero gradient. This result is compared with derived gradients for other elements, and some reasons are briefly discussed for the independence of the barium abundances from Galactocentric distances. (1 data file).

Andrievsky, S. M.; Lepine, J. R. D.; Korotin, S. A.; Luck, R. E.; Kovtyukh, V. V.; Maciel, W. J.

2014-02-01

500

A study of magneto-crystalline alignment in sintered barium hexaferrite fabricated by powder injection molding  

NASA Astrophysics Data System (ADS)

Barium hexaferrite permanent magnets were produced by powder injection molding. Starting barium hexaferrite powder was prepared from a Fe 2O 3 and BaCO 3 powder mixture by calcination followed by milling. The feedstock for powder injection molding was prepared by mixing barium hexaferrite powder with a low viscosity binder. Magnetic alignment was achieved by applying a high intensity magnetic field to the melted feedstock during the injection process. Green samples (with and without magnetic alignment) were subjected to solvent debinding and subsequent thermal debinding followed by sintering. Sintering conditions were optimized in order to achieve a maximum energy product value. Magneto-crystalline aligning in barium hexaferrite was studied on both green and sintered samples using X-ray diffraction, scanning electron microscope (SEM) and magnetic measurements (hysteresisgraphs). All measurements were made both in a parallel and perpendicular direction to the aligning magnetic field. The obtained results confirmed magneto-crystalline alignment.

Zlatkov, B. S.; Nikolic, M. V.; Aleksic, O.; Danninger, H.; Halwax, E.

2009-02-01