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Sample records for cecostomy tube placement

  1. Cecostomy

    Science.gov (United States)

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  2. Complications of nasogastric tube placement--don't blow it.

    LENUS (Irish Health Repository)

    Leonard, S

    2012-04-01

    Preventable complications maybe associated with the placement of nasogastric tubes. Our report raises awareness of the potentially fatal complications that can occur. We also recommend an approach for clinicians which maybe used to avoid significant patient morbidity.

  3. Endoscopic placement of enteral feeding tubes

    OpenAIRE

    2010-01-01

    Malnutrition is common in patients with acute and chronic illness. Nutritional management of these malnourished patients is an essential part of healthcare. Enteral feeding is one component of nutritional support. It is the preferred method of nutritional support in patients that are not receiving adequate oral nutrition and have a functioning gastrointestinal tract (GIT). This method of nutritional support has undergone progression over recent times. The method of placement of enteral feedin...

  4. Prehospital determination of tracheal tube placement in severe head injury

    OpenAIRE

    Grmec, S; Mally, S

    2004-01-01

    Methods: All adult patients (>18 years) with severe head injury, maxillofacial injury with need of protection of airway, or polytrauma were intubated by an emergency physician in the field. Tube position was initially evaluated by auscultation. Then, capnometry and capnography was performed (infrared method). Emergency physicians evaluated capnogram and partial pressure of end tidal carbon dioxide (EtCO2) in millimetres of mercury. Determination of final tube placement was performed by a seco...

  5. Gastrostomy Tube Placement Without Nasogastric Tube: A Retrospective Evaluation in 85 Patients

    Energy Technology Data Exchange (ETDEWEB)

    Heberlein, Wolf E., E-mail: weheberlein@uams.edu; Goodwin, Whitney J.; Wood, Clint E.; Yousaf, Muhammad; Culp, William C. [University of Arkansas for Medical Sciences, Department of Radiology (United States)

    2012-12-15

    Purpose: Our study evaluated techniques for percutaneous gastrostomy (G)-tube placement without the use of a nasogastric (NG) tube. Instead, direct puncture of a physiologic air bubble or effervescent-enhanced gastric bubble distention was performed in patients with upper digestive tract obstruction (UDTO) or psychological objections to NG tubes. Materials and Methods: A total of 886 patients underwent G-tube placement in our department during a period of 7 years. We present our series of 85 (9.6%) consecutive patients who underwent percutaneous G-tube placement without use of an NG tube. Results: Of these 85 patients, fluoroscopic guided access was attempted by direct puncture of a physiologically present gastric air bubble in 24 (28%) cases. Puncture of an effervescent-induced large gastric air bubble was performed in 61 (72%) patients. Altogether, 82 (97%) of 85 G tubes were successfully placed in this fashion. The three failures comprised refusal of effervescent, vomiting of effervescent, and one initial tube misplacement when a deviation from our standard technique occurred. Conclusion: The described techniques compare favorably with published large series on G-tube placement with an NG tube in place. The techniques are especially suited for patients with UDTO due to head, neck, or esophageal malignancies, but they should be considered as an alternative in all patients. Direct puncture of effervescent-enhanced gastric bubble distention is a safe, patient-friendly and effective technique.

  6. Gastrostomy Tube Placement Without Nasogastric Tube: A Retrospective Evaluation in 85 Patients

    International Nuclear Information System (INIS)

    Purpose: Our study evaluated techniques for percutaneous gastrostomy (G)-tube placement without the use of a nasogastric (NG) tube. Instead, direct puncture of a physiologic air bubble or effervescent-enhanced gastric bubble distention was performed in patients with upper digestive tract obstruction (UDTO) or psychological objections to NG tubes. Materials and Methods: A total of 886 patients underwent G-tube placement in our department during a period of 7 years. We present our series of 85 (9.6%) consecutive patients who underwent percutaneous G-tube placement without use of an NG tube. Results: Of these 85 patients, fluoroscopic guided access was attempted by direct puncture of a physiologically present gastric air bubble in 24 (28%) cases. Puncture of an effervescent-induced large gastric air bubble was performed in 61 (72%) patients. Altogether, 82 (97%) of 85 G tubes were successfully placed in this fashion. The three failures comprised refusal of effervescent, vomiting of effervescent, and one initial tube misplacement when a deviation from our standard technique occurred. Conclusion: The described techniques compare favorably with published large series on G-tube placement with an NG tube in place. The techniques are especially suited for patients with UDTO due to head, neck, or esophageal malignancies, but they should be considered as an alternative in all patients. Direct puncture of effervescent-enhanced gastric bubble distention is a safe, patient-friendly and effective technique.

  7. Placement of large suprapubic tube using peel-away introducer.

    Science.gov (United States)

    Chiou, R K; Morton, J J; Engelsgjerd, J S; Mays, S

    1995-04-01

    We describe a new method for placing a large suprapubic tube and report our experience with 56 patients. This method uses a specially designed fascial dilator and peel-away introducer to place an 18F Foley catheter suprapubically. In our experience the method is simple and effective for the exchange of a small suprapubic tube to an 18F Foley catheter, and for primary placement of a large suprapubic tube. It is easily performed at the bedside or during a minor procedure with the patient under local anesthesia. PMID:7869492

  8. Esophagojejunostomy Feeding Tube Placement in 5 Dogs with Pancreatitis and Anorexia

    Directory of Open Access Journals (Sweden)

    Forrest Cummings

    2014-01-01

    Full Text Available Enteral feeding tube placement has been described in veterinary medicine for several years. Indications include oral, esophageal, gastrointestinal, pancreatic, hepatic, and neurologic diseases. In this paper, endoscopically assisted placement of an esophagojejunostomy (EJ feeding tube in dogs with pancreatitis and prolonged anorexia is described. To the author’s knowledge there are no published reports of this procedure. Esophagojejunostomy feeding tubes provide an alternative to other forms of postgastric feeding tube placement (e.g., nasojejunal, gastrojejunostomy, and jejunostomy tubes without the associated complications of patient discomfort, sneezing, epistaxis, and peritonitis. Tube occlusion, transient vomiting and loose stool were the most commonly reported complications.

  9. Laryngo-tracheal ultrasonography to confirm correct endotracheal tube and laryngeal mask airway placement

    OpenAIRE

    Wojtczak, Jacek A.; Cattano, Davide

    2014-01-01

    Waveform capnography was recommended as the most reliable method to confirm correct endotracheal tube or laryngeal mask airway placements. However, capnography may be unreliable during cardiopulmonary resuscitation and during low flow states. It may lead to an unnecessary removal of a well-placed endotracheal tube, re-intubation and interruption of chest compressions. Real-time upper airway (laryngo-tracheal) ultrasonography to confirm correct endotracheal tube placement was shown to be very ...

  10. Limited approach to the right flank for placement of a duodenostomy tube.

    Science.gov (United States)

    Novo, R E; Churchill, J; Faudskar, L; Lipowitz, A J

    2001-01-01

    A new enterostomy tube placement technique is described for provision of nutrients into the duodenum. Placement of the duodenostomy tube (d-tube) is performed through a limited right flank approach under sedation and local anesthesia. Seven client-owned animals (three dogs and four cats) requiring enteral nutritional support were selected for d-tube placement. Patients were fed via the d-tube for two to 28 days. Complications included discomfort when manipulating and exteriorizing the duodenum, discomfort with bolus feedings, local cellulitis, and tube site infection. All complications resolved without further incident. This technique should be considered in patients that are not good candidates for prolonged general anesthesia or esophageal or gastric feeding, or patients being mechanically ventilated. PMID:11300529

  11. Fluoroscopy guided double-guidewire tube placement in treating anastomotic leakage after esophagectomy for esophageal cancer

    International Nuclear Information System (INIS)

    Objective: To evaluate the clinical application of double-guidewire tube placement under fluoroscopy in treating the anastomotic leakage alter esophagectomy for esophageal cancer. Methods: Naso- intestinal feeding tube and gastrointestinal decompression tube were placed through double-guidewire under fluoroscopic guidance for 12 patients with anastomotic leakage after esophagectomy. The technical success rate, average time for the procedure, complications and the cure rate of leakage were evaluated. Results: All tubes were placed successfully in 100% technically, together with procedure time from 5 to 8 min (mean 6 min) for each patients. Complications related to procedure and tube placement such as arrhythmia, malpositioning, aspiration pneumonia and epiglottic dysfunction did not occur. Of the 12 patients, 10 were cured at 17-37d (mean 28 d) and 2 died. Conclusion: Fluoroscopy guided double-guidewire tube placement is easy and safe; promoting the cure rate of anastomotic leakage after esophageetomy. (authors)

  12. Percutaneous placement of a suprapubic tube with peel away sheath introducer.

    Science.gov (United States)

    O'Brien, W M

    1991-05-01

    A new technique for percutaneous placement of a suprapubic tube has been developed, which allows controlled entry into the bladder over a guide wire to avoid the potential hazards of blind trocar cystotomy. A Foley style catheter can be placed, which is less likely to become dislodged than other types of percutaneous suprapubic catheters currently available. PMID:2016781

  13. Percutaneous endoscopic gastrostomy tube placement for end-stage palliation of malignant gastrointestinal obstructions

    Directory of Open Access Journals (Sweden)

    Anouar Teriaky

    2012-01-01

    Full Text Available Background/Aim: Decompression of malignant gastrointestinal obstructions is an uncommon indication for percutaneous endoscopic gastrostomy (PEG tubes. The purpose of this study is to determine the efficacy of venting PEG tubes in relieving nausea and vomiting and assessing complications associated with tube placement. Patients and Methods: This study is a retrospective chart review of patients with PEG tubes placed to decompress malignant gastrointestinal obstructions between January 2005 and September 2010 by the gastroenterology service at our institute. Patient demographics, symptom relief, procedural complications, diet tolerability and home palliation were reviewed. Results: Seven PEG tubes were inserted to decompress malignant gastrointestinal obstructions. The mean patient age was 62 years (range 37-82 years. The underlying primary malignancies were small intestine (1, appendiceal (1, pancreatic (2, and colon (3 cancer. Gastric outlet obstruction was present in 3 (43% patients while small bowel obstruction occurred in 4 (57% patients. There was relief of nausea and vomiting in 6 (86% patients. Procedural complications were present in 1 (14% patient and involved superficial cellulitis followed by peristomal leakage. Patients with gastric outlet obstruction continued to have limited oral intake while patients with small bowel obstruction tolerated varying degrees of oral nutrition. Six (86% patients were discharged home after PEG tube placement, but only 2 (33% were able to undergo end-stage palliation at home without re-admission for hospital palliation. Conclusions: Venting PEG tubes significantly reduce the symptoms of nausea and vomiting in patients with metastatic gastrointestinal obstruction due to primary gastrointestinal malignancies. Complications associated with tube placement were minimal.

  14. Acceptability and outcomes of the Percutaneous Endoscopic Gastrostomy (PEG tube placement- patients' and care givers' perspectives

    Directory of Open Access Journals (Sweden)

    Shah Hasnain A

    2006-11-01

    Full Text Available Abstract Background Percutaneous endoscopic gastrostomy tube has now become a preferred option for the long-term nutritional support device for patients with dysphagia. There is a considerable debate about the health issues related to the quality of life of these patients. Our aim of the study was to assess the outcome and perspectives of patients/care givers, about the acceptability of percutaneous endoscopic gastrostomy tube placement. Methods This descriptive analytic study conducted in patients, who have undergone percutaneous endoscopic gastrostomy tube placement during January 1998 till December 2004. Medical records of these patients were evaluated for their demographic characteristics, underlying diagnosis, indications and complications. Telephonic interviews were conducted till March 2005, on a pre-tested questionnaire to address psychological, social and physical performance status, of the health related quality of life issues. Results A total of 191 patients' medical records were reviewed, 120 (63% were males, and mean age was 63 years. Early complication was infection at PEG tube site in 6 (3% patients. In follow up over 365 ± 149 days, late complications (occurring 72 hours later were infection at PEG tube site in 29 (15 % patient and dislodgment/blockage of the tube in 26 (13.6%. Interviews were possible with 126 patients/caretakers. Karnofsky Performance Score of 0, 1, 2, 3 and 4 was found in 13(10%, 18(14%, 21(17%, 29(23% and 45(36% with p-value Conclusion PEG-tube placement was found to be relatively free from serious immediate and long- term complications. Majority of caregivers and patient felt that PEG-tube helped in feeding and prolonging the survival. Studies are needed to assess the real benefit in terms of actual nutritional gain and quality of life in such patients.

  15. Appropriate depth of placement of oral endotracheal tube and its possible determinants in Indian adult patients

    Directory of Open Access Journals (Sweden)

    Manu Varshney

    2011-01-01

    Full Text Available Background: Optimal depth of endotracheal tube (ET placement has been a serious concern because of the complications associated with its malposition. Aims: To find the optimal depth of placement of oral ET in Indian adult patients and its possible determinants viz. height, weight, arm span and vertebral column length. Settings and Design: This study was conducted in 200 ASA I and II patients requiring general anaesthesia and orotracheal intubation. Methods: After placing the ET with the designated black mark at vocal cords, various airway distances were measured from the right angle of mouth using a fibre optic bronchoscope. Statistical Analysis: The power of the study is 0.9. Mean (SD and median (range of various parameters and Pearson correlation coefficient was calculated. Results: The mean (SD lip-carina distance, i.e., total airway length was 24.32 (1.81 cm and 21.62 (1.34 cm in males and females, respectively. With black mark of ET between vocal cords, the mean (SD ET tip-carina distance of 3.69 (1.65 cm in males and 2.28 (1.55 cm females was found to be considerably less than the recommended safe distance. Conclusions: Fixing the tube at recommended 23 cm in males and 21 cm in females will lead to carinal stimulation or endobronchial placement in many Indian patients. The lip to carina distance best correlates with patient′s height. Positioning the ET tip 4 cm above carina as recommended will result in placement of tube cuff inside cricoid ring with currently available tubes. Optimal depth of ET placement can be estimated by the formula "(Height in cm/7-2.5."

  16. Repair of diaphragmatic injury and placement of tube thoracostomy during right upper quadrant peritonectomy

    Science.gov (United States)

    Ozgul, Nejat; Basaran, Derman; Salman, M. Coskun

    2016-01-01

    Objective Patients with advanced or recurrent ovarian cancer often have metastatic disease in the upper abdominal region, especially to the right hemidiaphragm, which requires diaphragmatic resection in order to achieve optimal cytoreduction. The aim of this surgical video is to demonstrate repair of a diaphragmatic injury and placement of tube thoracostomy during right upper quadrant peritonectomy in a patient with recurrent ovarian cancer. Methods This is the case of a 45-year-old woman presented with platinum sensitive recurrent ovarian cancer. Abdomen computed tomography also confirmed peritoneal carcinomatosis and pelvic recurrent mass. HIPEC was administered after complete cytoreduction including bilateral upper quadrant peritonectomy, during which diaphragmatic injury occurred near the central tendon and pleural cavity was entered. We inserted a chest tube through the 6th intercostal space in the anterior axillary line in order to prevent postoperative massive pleural effusion. Diaphragmatic defect was closed primarily after the tube placement. The chest tube was withdrawn on the third postoperative day and the patient was discharged on postoperative day 25 without any complications. Results The central tendon of diaphragm is the most vulnerable part for lacerations. Diaphragmatic repairs could be performed by various techniques; interrupted or continuous, locking or non-locking sutures, with either permanent or absorbable materials. In our view, all of the techniques provide similar results and surgeons can choose any of them as long as they are comfortable with the procedure. Conclusion In most cases, these lacerations can be repaired primarily without necessitating tube thoracostomy. However, performance of HIPEC can cause massive pleural effusions which can lead to significant pulmonary morbidity. Therefore, retrograde placement of the chest tube under direct vision is quite straightforward when the diaphragm is opened. PMID:26463433

  17. Comparison between Two Cecostomy Techniques for Treatment of Atresia Coli in Cattle and Buffalo Calves

    Directory of Open Access Journals (Sweden)

    Mohamad Abdelfattah Abdelrhman, Aiman Mahmoud Seddek*1 and Hossam Ahmad Bakr2

    2013-07-01

    Full Text Available The study aimed at determination of the cecostomy technique that will preserve the long-term maximal diameter of the created fistula. The subjects of the study were 79 newly born cattle and buffalo calves suffered from atresia coli, recti and ani. The calves were grouped into four groups for evaluation of incisional and herniation cecostomy techniques either on the right or left flank. With each technique, 4 cm diameter permanent fistula was created and evaluated at the 1stweek, and 1st, 4th and 8th months post-surgery. Both of the short and long-term complications were recorded and managed conservatively. Follow up could be achieved for 45 calves only and all of them showed stunted growth. The results revealed wider stoma in the calves operated by herniation technique, and in those operated on the right flank, moreover the operated cattle calves had wider stoma than buffalo calves. It is concluded that the right flank herniation technique has a beneficial effect on long-term preserving of a wider diameter of the created fistula.

  18. Haemodynamic response at double lumen bronchial tube placement - Airtraq vs. MacIntosh laryngoscope, a randomised controlled trial

    OpenAIRE

    Hamp, Thomas; Stumpner, Thomas; Grubhofer, Georg; Ruetzler, Kurt; Thell, Rainer; Hager, Helmut

    2015-01-01

    Introduction Tracheal intubation causes a haemodynamic response that might be harmful for patients. The Airtraq® laryngoscope has been shown to decrease the haemodynamic response to single-lumen tube intubation. We hypothesised that double-lumen bronchial tube placement with the Double-lumen Airtraq® laryngoscope would cause a reduced haemodynamic response and decreased catecholamine release compared with the MacIntosh laryngoscope. Methods Forty adult patients were randomly assigned to the A...

  19. Modified method of T-tube placement in cases of ruptured choledochal cyst having complete loss of anterior wall

    Directory of Open Access Journals (Sweden)

    Ahmed Intezar

    2011-01-01

    Full Text Available Survival rates for infants and children who have choledochal cyst with or without spontaneous rupture have improved dramatically in the past decades. Despite excellent long-term survival for patients with choledochal cyst who undergo elective surgery, many significant complications can occur in the patients being operated in emergency for rupture of the cyst. Spontaneous rupture of the cyst is one such problem resulting in considerable morbidity and mortality in these patients. Majority of surgeons manage these cases with T-tube external drainage. The conventional methods of T-tube placement for long period has remained simple as described in choledochotomies where there is no deficit of the walls of common bile duct (CBD. The present technique has been designed specially for the cases of ruptured choledochal cyst, where the wall of the CBD gets necrosed leaving behind a long gap between the two ends. In these cases, placement of T-tube with conventional method is not possible because there is no wall to suture together, and make the CBD water tight again to prevent leakage of bile. We found only two patients of spontaneous rupture of choledochal cyst with a long gap between two ends of CBD because of necrosed anterior wall. In both of these patients, it was not possible to put T-tube with traditional method and one would have to opt for primary definitive repair despite poor general condition of patients.

  20. Nasoenteral feeding tube placement by nurses using an electromagnetic guidance system (with video)

    NARCIS (Netherlands)

    E.M.H. Mathus-Vliegen; A. Duflou; M.B.W. Spanier; P. Fockens

    2010-01-01

    BACKGROUND: The early institution of feeding in patients who need postpyloric feeding tubes is often hampered by a limited availability of endoscopists experienced in safe tube positioning. OBJECTIVE: To test the feasibility of having nurses place postpyloric feeding tubes by using a universal path

  1. Initial Experience with Computed Tomography and Fluoroscopically Guided Placement of Push-Type Gastrostomy Tubes Using a Rupture-Free Balloon Catheter

    International Nuclear Information System (INIS)

    The purpose of this study was to evaluate the safety and feasibility of percutaneous radiologic gastrostomy placement of push-type gastrostomy tubes using a rupture-free balloon (RFB) catheter under computed tomography (CT) and fluoroscopic guidance. A total of 35 patients (23 men and 12 women; age range 57–93 years [mean 71.7]) underwent percutaneous CT and fluoroscopically guided gastrostomy placement of a push-type gastrostomy tube using an RFB catheter between April 2005 and July 2008. Technical success, procedure duration, and complications were analyzed. Percutaneous radiologic gastrostomy placement was considered technically successful in all patients. The median procedure time was 39 ± 13 (SD) min (range 24–78). The average follow-up time interval was 103 days (range 7–812). No major complications related to the procedure were encountered. No tubes failed because of blockage, and neither tube dislodgement nor intraperitoneal leakage occurred during the follow-up period. The investigators conclude that percutaneous CT and fluoroscopically guided gastrostomy placement with push-type tubes using an RFB catheter is a safe and effective means of gastric feeding when performed by radiologists.

  2. Mistaken Endobronchial Placement of a Nasogastric Tube During Mandibular Fracture Surgery

    OpenAIRE

    Kalava, Arun; Clark, Kirpal; McIntyre, John; Yarmush, Joel M.; Lizardo, Teresita

    2015-01-01

    A 64-year-old male had an awake right nasal fiber-optic intubation with an endotracheal tube for open reduction and internal fixation of bilateral displaced mandibular fractures. After induction of anesthesia, an 18 Fr nasogastric tube (NGT) was inserted through the left nostril and was secured. The patient required high flow rates to deliver adequate tidal volumes with the ventilator. A chest x-ray done in the postanesthesia care unit revealed a malpositioned NGT in the left lower lobe bronc...

  3. Technique for Percutaneous Fluoroscopically Guided G-Tube Placement in a High-BMI Patient

    Directory of Open Access Journals (Sweden)

    Irwin M. Best

    2012-01-01

    Full Text Available Enteral feeding is still the preferred method of nutritional support even in patients with excessive body mass index. Often, this mass poses a hindrance in performing routine procedures. We present a case describing the technique used to safely place a fluoroscopically guided G-tube in a patient with a significant nutritional deficit after repair of a ruptured thoracic aneurysm. Her admission weight was in excess of 180 Kg. However, protracted respiratory insufficiency and mechanical ventilation prolonged her hospital course. The G-tube was successfully placed using a fluoroscopically guided technique. The advantages of such an approach are discussed.

  4. Mistaken Endobronchial Placement of a Nasogastric Tube During Mandibular Fracture Surgery.

    Science.gov (United States)

    Kalava, Arun; Clark, Kirpal; McIntyre, John; Yarmush, Joel M; Lizardo, Teresita

    2015-01-01

    A 64-year-old male had an awake right nasal fiber-optic intubation with an endotracheal tube for open reduction and internal fixation of bilateral displaced mandibular fractures. After induction of anesthesia, an 18 Fr nasogastric tube (NGT) was inserted through the left nostril and was secured. The patient required high flow rates to deliver adequate tidal volumes with the ventilator. A chest x-ray done in the postanesthesia care unit revealed a malpositioned NGT in the left lower lobe bronchus, which was immediately removed. The patient was extubated on postoperative day 2. Various traditional methods, such as aspiration of gastric contents, auscultation of gastric insufflations, and chest x-ray are in use to detect or prevent the misplacement of an NGT. These methods can be unreliable or impractical. Use of capnography to detect an improperly placed NGT should be considered in the operating room as a simple, cost-effective method with high sensitivity to prevent possibly serious sequelae of an NGT placed within the bronchial tree. PMID:26398128

  5. Is It Time to Review Guidelines for ETT Positioning in the NICU? SCEPTIC—Survey of Challenges Encountered in Placement of Endotracheal Tubes in Canadian NICUs

    Directory of Open Access Journals (Sweden)

    Pankaj Sakhuja

    2016-01-01

    Full Text Available Objectives. To examine current opinions and practices regarding endotracheal tube placement across several Canadian Neonatal Intensive Care Units. Design. Clinical directors from Canadian Neonatal Network affiliated NICUs and Neonatal-Perinatal Programs across Canada were invited via email to participate in and disseminate the online survey to staff neonatologists, neonatal fellows, respiratory therapists, and nurse practitioners. Result. There is wide variability in the beliefs and practices related to ETT placement. The majority use “weight +6” formula and “aim to black line” on ETT at vocal cords to estimate the depth of an oral ETT and reported estimation as challenging in ELBW infants. The majority agreed that mid-trachea is an ideal ETT tip position; however their preferred position on chest X-ray varied. Many believe that ETT positioning could be improved with more precise ETT markings. Conclusion. Further research should focus on developing more effective guidelines for ETT tip placement in the ELBW infants.

  6. Efetividade da sondagem pós-pilórica usando guia magnético Effectiveness of post-pyloric tube placement using magnetic guidance

    Directory of Open Access Journals (Sweden)

    Renata Andrea Pietro Pereira Viana

    2011-03-01

    enteral nutrition by means of tubes placed in the post-pyloric position has been suggested to improve the nutrition tolerance. The aim of this study was to compare the rate of successful post-pyloric placement using a real-time electromagnetic positioning device to the success rate using the conventional placement method. METHODS: This was a prospective, randomized and controlled study, conducted in a tertiary hospital over a period of three months. The patients were randomized to one of two groups: electromagnetically guided system group, whose patients underwent real-time monitoring of post-pyloric tube placement; or the control group, whose patients underwent tube placment using to the conventional blinded technique. The rates of successful post-pyloric placement and the procedure times were assessed and compared between the groups. RESULTS: Thirty-seven patients were enrolled, 18 in the electromagnetic group and 19 in the control group. The final tube position was evaluated using radiography. The electromagnetic guided group showed better success rates and shorter procedure times when compared to the control group. Additionally, in the electromagnetic guided group, higher pH values were found in the fluids aspirated from the probe, suggesting successful postpyloric placement. CONCLUSION: The electromagnetically guided method provided better placement accuracy than did the conventional technique.

  7. Ultrasonography for Proper Endotracheal Tube Placement Confirmation in Out-of-hospital Cardiac Arrest Patients: Two-center Experience

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    Jen-Tang Sun

    2014-06-01

    Conclusion: Real-time tracheal ultrasonography is an accurate method for identifying endotracheal tube position during cardiopulmonary resuscitation without the need for interruption of chest compression.

  8. Nutritional status and feeding-tube placement in patients with locally advanced hypopharyngeal cancer included in an induction chemotherapy-based larynx preservation program.

    Science.gov (United States)

    Bozec, Alexandre; Benezery, Karen; Chamorey, Emmanuel; Ettaiche, Marc; Vandersteen, Clair; Dassonville, Olivier; Poissonnet, Gilles; Riss, Jean-Christophe; Hannoun-Lévi, Jean-Michel; Chand, Marie-Eve; Leysalle, Axel; Saada, Esma; Sudaka, Anne; Haudebourg, Juliette; Hebert, Christophe; Falewee, Marie-Noelle; Demard, François; Santini, José; Peyrade, Frédéric

    2016-09-01

    The objective of the study is to evaluate the nutritional status and determine its impact on clinical outcomes in patients with locally advanced hypopharyngeal cancer included in an induction chemotherapy (ICT)-based larynx preservation program without prophylactic feeding-tube placement. All patients with locally advanced (T3/4, N0-3, M0) hypopharyngeal squamous cell carcinoma, technically suitable for total pharyngolaryngectomy, treated by docetaxel, cisplatin and 5-fluorouracil (TPF)-ICT for larynx preservation at our institution between 2004 and 2013, were included in this retrospective study. Patients' nutritional status was closely monitored. Enteral nutrition was used if and when a patient was unable to sustain per-oral nutrition and hydration. The impact of nutritional status on clinical outcomes was investigated in univariate and multivariate analysis. A total of 53 patients (42 men and 11 women, mean age = 58.6 ± 8.2 years) were included in this study. Six (11.3 %) patients had lost more than 10 % of their usual body weight before therapy. Compared with patients' usual weight, the mean maximum patient weight loss during therapeutic management was 8.7 ± 4.5 kg. Enteral nutrition was required in 17 patients (32 %). We found no influence of the tested nutritional status-related factors on response to ICT, toxicity of ICT, overall, cause-specific and recurrence-free survival, and on post-therapeutic swallowing outcome. Maximum weight loss was significantly associated with a higher risk of enteral tube feeding during therapy (p = 0.03) and of complications (grade ≥3, p = 0.006) during RT. Without prophylactic feeding-tube placement, approximately one-third of the patients required enteral nutrition. There was no significant impact of nutritional status on oncologic or functional outcomes. PMID:26395117

  9. Nasogastric tube placement into the hepaticojejunostomy anastomosis in pancreaticoduodenectomy: a simple surgical technique for prevention of bile leak.

    Science.gov (United States)

    Kaya, Bulent; Ozcabi, Yetkin; Tasdelen, Iksan; Onur, Ender; Memisoglu, Kemal

    2016-05-01

    Hepaticojejunostomy is an important part of many surgical procedures including pancreaticoduodenectomy. Biliary leakage from hepaticojejunostomy may be associated with intraabdominal abscess formation, biliary peritonitis, and even mortality. A 72-year-old female patient was admitted to our hospital with obstructive jaundice. After initial evaluation, she was diagnosed with distal common bile duct obstruction without accurate diagnosis. Before planned pancreaticoduodenectomy, biliary drainage with a T-tube was performed due to the presence of cholangitis. After the first operation, pancreaticoduodenectomy was performed. Postinflammatory changes around the hilar region made the hepaticojejunostomy risky. A bilio-digestive anastomosis was performed using a new technique. A nasogastric tube was placed into the common bile duct proximal to the anastomosis. The postoperative course of the patient was uneventful. The use of a nasogastric tube as a stent in risky hepaticojejunostomies is a simple technique that can be beneficial. PMID:27212998

  10. Application of Bedside Placement of Nasoenteric Tube in Critically Ill Patients%重症患者床旁放置鼻肠营养管的应用分析

    Institute of Scientific and Technical Information of China (English)

    赵晓静; 高彦霞; 丁新艾; 李璐; 吴瑶

    2014-01-01

    Objective To investigate the safety and feasibility of bedside placement of nasoenteric tube in critically ill patients. Methods Nineteen critically ill patients received the placement of nasoenteric tubes through intermittent straight line insertion after treatment with 10 mg metoclopramide for 10 minutes. The passive waiting method was used if nasoenteric tubes were not passed through the pylorus for 30 minutes. Abdominal X-ray examination was performed immediately after insertion in patients undergoing intermittent straight line insertion and 24 hours after insertion in patients undergoing passive waiting insertion to confirm the successful placement of nasoenteric tubes. 19 cases of catheterization time, catheterization method,successful rate and complications were recorded. Results Among the 19 patients,17 (84%) underwent successful placement of nasoenteric tubes through intermittent straight line insertion with an average catheterization time of ( 22 . 4 ± 3 . 9 ) minutes . X-ray examination showed that the tip of nasoenteric tube was located at descending duodenum in 1 patient,horizontal duodenum in 4 patients,ascending duodenum in 10 patients and upper jejunum in 2 patients. Intermittent straight line insertion was failed but the placement of nasoenteric tubes by using passive waiting method was successfully performed in 2 patients. X-ray examination showed that the tip of nasoenteric tube was located at ascending duodenum in these two patients. The average duration of catheterization was (38 ±42) days and no serious complications occurred in all patients. Conclusion Bedside placement of nasoenteric tubes through intermittent straight line insertion is a safe and feasible method for critically ill patients. The passive waiting method may be used as a remedial measure.%目的:探讨重症患者床旁放置鼻肠营养管(简称鼻肠管)的安全性和可行性。方法对19例重症患者常规给予甲氧氯普胺10 mg,10 min后采用床旁间

  11. Product placement

    OpenAIRE

    Šafaříková, Kateřina

    2012-01-01

    This work focuses on the impact of product placement on children and comparison of attitudes towards its use in audiovisual works intended for children. The theoretical part describes the basic advertising and influencing what resources used, then it is defined by the influence of advertising on children. This issue is examined from the perspective of marketers and general ethical aspects. Product placement is a separate chapter in the theoretical part, starting with its definition, the d...

  12. Improving time to continence after robot-assisted laparoscopic prostatectomy: augmentation of the total anatomic reconstruction technique by adding dynamic detrusor cuff trigonoplasty and suprapubic tube placement.

    Science.gov (United States)

    Tewari, Ashutosh K; Ali, Adnan; Ghareeb, George; Ludwig, Wesley; Metgud, Sheela; Theckumparampil, Nithin; Takenaka, Atsushi; Chugtai, Bilal; Shrivastava, Abhishek; Kaplan, Steve A; Leung, Robert; Paryani, Rahul; Grushow, Siobhan; Durand, Matthieu; Peyser, Alexandra; Chopra, Sameer; Harneja, Niyati; Lee, Richard K; Herman, Michael; Robinson, Brian; Shevchuck, Maria M

    2012-12-01

    After robot-assisted laparoscopic prostatectomy, total anatomic reconstruction (TR) with the additions of a circumapical urethral dissection, a dynamic detrusor cuff trigonoplasty, and placement of a suprapubic catheter was performed in 49 patients from June to July 2012. Continence at 6 weeks after catheter removal was assessed for an initial group of 23 patients, and also at 2 weeks in an additional 26 patients who most recently had undergone surgery. Follow-up appointments and telephone interviews were used to assess pad use and continence. Of the initial 23 patients receiving the modified TR, 60.9% had 0 pad use at 6 weeks. By 2 weeks, 65.4% of the most recent 26 patients operated on achieved continence with 0-1 pad use. Preservation and reconstruction of the pelvic floor and supporting bladder structures leads to an earlier return of continence. These key steps need to be validated and confirmed in larger and randomized trials. PMID:23230868

  13. Percutaneous gastrostomy performed by radiologists using balloon replacement tubes. A simple interventional technique for the placement of nutritional catheters without endoscopy or surgery

    International Nuclear Information System (INIS)

    Patients afflicted with stenotic head and neck or esophageal tumors often require artificial enteral feeding. Frequently passage of an endoscope through the esophagus is impossible in these patients. Interventional, fluoroscopically assisted, percutaneous gastrostomy (PG) by balloon replacement tubes is a feasible and successful alternative to percutaneous endoscopic gastrostomy (PEG) and the method of choice in patients where the esophagus cannot be passed with an endoscope anymore. Technical success rate is very high and serious complications are rare. Radiological PG is a feasible, equivalent alternative to PEG also in all other patients. We recommend PG with balloon gastrostomy tubes in conjunction with gastropexy performed with three to four T-fasteners, which are left in place for seven days in order to prevent dislocation and leakage. (orig.)

  14. Small bowel perforation during suprapubic tube exchange.

    Science.gov (United States)

    Mongiu, Anne K; Helfand, Brain T; Kielb, Stephanie J

    2009-02-01

    Suprapubic tube placement is a common urological procedure with a low incidence of complications, including hematuria, catheter blockage, recurrent urinary tract infections, and rarely, injury to adjacent organs. Fortunately, most serious complications are discovered shortly after initial suprapubic tube placement and are readily corrected. Very few cases of delayed complications or injuries have been reported. We report a case of Foley perforation into the ileum during suprapubic tube exchange discovered more than 8 months after initial placement, and preceding numerous monthly changes that occurred without incident. While a rare complication, physicians should be conscious of the potential for delayed injury in patients managed with long term suprapubic tube placement. PMID:19222896

  15. Sediment Placement Areas 2012

    Data.gov (United States)

    California Department of Resources — Dredge material placement sites (DMPS), including active, inactive, proposed and historical placement sites. Dataset covers US Army Corps of Engineers San Francisco...

  16. Comparison the Airtraq and Macintosh laryngoscopes for placement of double-lumen endobranchial tube%Airtraq可视喉镜与Macintosh喉镜用于双腔支气管插管的临床研究

    Institute of Scientific and Technical Information of China (English)

    蒋琦亮; 张晓峰; 徐关英

    2011-01-01

    目的 比较Airtraq可视喉镜和Macintosh喉镜用于双腔支气管插管的临床效果.方法 选择需行单肺通气的胸外科手术患者60例,随机均分为两组.A组使用Airtraq可视喉镜而M组使用Macintosh直接喉镜行双腔支气管插管.比较两组插管时间、Cormack/Lehane分级、插管难易度评分(IDS评分)、进入目标支气管的成功率、口腔损伤出血情况(唇、齿、舌及口腔黏膜).结果 A组MallampatiⅢ级患者的插管时间明显短于M组(P<0.05);Cormack/Lehane分级及IDS评分明显优于M组(P<0.05);IDS评分≥1分患者A组明显少于M组(P<0.05).结论 与Macintosh喉镜相比,MallampatiⅢ级患者使用Airtraq可视喉镜插管速度更快,Airtraq可视喉镜下声门显露更佳,且插管难度更低.%Objective To compare the clinical application of the Airtraq and Macintosh laryngoscopes for placement of double-lumen endobranchial tube (DLT). Methods Sixty patients scheduled for thoracic surgery requiring one-lung ventilation were randomly allocated to two groups. The patients in group A were intubated with the Airtraq laryngoscope while the patients in group M were intubated with the traditional Macintosh laryngoscope. The intubation time, "Cormack and Lehane glottic view, intubation difficulty scale (IDS), the number of DLT malposition after intubation and the injuries of lip, dentition or tongue were documented and compared between the two groups. Results The intubation time was shorter in group A than in group M in the patients with Mallampati classification Ⅲ (P<0. 05). Cormack and I ehane glottic view was better in group A than in group M (P<0. 05). Conclusion The Airtraq laryngoscope can reduce the intubation time in patients with Mallampati classification Ⅲ , and provide better glottic view and lower intubation difficulty comparing to Macintosh laryngoscope.

  17. [How to do - the chest tube drainage].

    Science.gov (United States)

    Klopp, Michael; Hoffmann, Hans; Dienemann, Hendrik

    2015-03-01

    A chest tube is used to drain the contents of the pleural space to reconstitute the physiologic pressures within the pleural space and to allow the lungs to fully expand. Indications for chest tube placement include pneumothorax, hemothorax, pleural effusion, pleural empyema, and major thoracic surgery. The most appropriate site for chest tube placement is the 4th or 5th intercostal space in the mid- or anterior- axillary line. Attention to technique in placing the chest tube is vital to avoid complications from the procedure. Applying the step-by-step technique presented, placement of a chest tube is a quick and safe procedure. Complications - frequently occurring when the tube is inserted with a steel trocar - include hemothorax, dislocation, lung lacerations, and injury to organs in the thoracic or abdominal cavity." PMID:25734676

  18. Math Sense: Placement Test.

    Science.gov (United States)

    2003

    Math Sense consists of five books that develop from basic to more advanced math skills. This document contains a placement test used with Math Sense to help students and their teachers decide into which Math Sense book to begin working. The placement test is divided into six parts, each consisting of 10 to 22 problems, and is based on exit skill…

  19. Whither Advanced Placement?

    Directory of Open Access Journals (Sweden)

    William Lichten

    2000-06-01

    Full Text Available This is a review of the Advanced Placement (AP Program. In disagreement with claims of the College Board, there is firm evidence that the average test performance level has dropped. The College Board's scale and claims for AP qualification disagree seriously with college standards. A majority of tests taken do not qualify. It appears that "advanced placement" is coming closer to "placement." This article recommends that the College Board's policy of concentrating on numbers of participants should be changed to an emphasis on student performance and program quality.

  20. Coronary Angioplasty Stent Placement

    Medline Plus

    Full Text Available Coronary Angioplasty Stent Placement Shawnee Mission Heart & Vascular Center, Shawnee Mission, Kansas February 19, 2009 Welcome to this OR-Live westbound cast presentation, live from Shawnee Mission Medical Center ...

  1. Product placement in the czech film Revival

    OpenAIRE

    Lísková, Gabriela

    2013-01-01

    Marketing and commertial communication and position of product placement within it, legislature governing product placement and its aplication, history of product placement, forms of product placement, aplication of product placement in the czech film Revival

  2. Tension Pneumothorax and Subcutaneous Emphysema Complicating Insertion of Nasogastric Tube

    Directory of Open Access Journals (Sweden)

    Narjis AL Saif

    2015-01-01

    Full Text Available Nasogastric tube has a key role in the management of substantial number of hospitalized patients particularly the critically ill. In spite of the apparent simple insertion technique, nasogastric tube placement has its serious perhaps fatal complications which need to be carefully assessed. Pulmonary misplacement and associated complications are commonplace during nasogastric tube procedure. We present a case of tension pneumothorax and massive surgical emphysema in critically ill ventilated patient due to inadvertent nasogastric tube insertion and also discussed the risk factors, complication list, and arrays of techniques for safer tube placement.

  3. Tension Pneumothorax and Subcutaneous Emphysema Complicating Insertion of Nasogastric Tube

    Science.gov (United States)

    AL Saif, Narjis; Hammodi, Adel; Al-Azem, M. Ali; Al-Hubail, Rasheed

    2015-01-01

    Nasogastric tube has a key role in the management of substantial number of hospitalized patients particularly the critically ill. In spite of the apparent simple insertion technique, nasogastric tube placement has its serious perhaps fatal complications which need to be carefully assessed. Pulmonary misplacement and associated complications are commonplace during nasogastric tube procedure. We present a case of tension pneumothorax and massive surgical emphysema in critically ill ventilated patient due to inadvertent nasogastric tube insertion and also discussed the risk factors, complication list, and arrays of techniques for safer tube placement. PMID:26448883

  4. Mediastinum of Pleural Invasion of Esophageal Carcinoma Postoperative Discussion on the Bilateral Closed Thoracic Drainage Tube Placement%纵膈胸膜侵犯的食管癌术后双侧胸腔闭式引流管放置探讨

    Institute of Scientific and Technical Information of China (English)

    臧国辉; 陈斌; 姚杰; 章文光; 王海兵; 余留; 何平海

    2013-01-01

    目的:探讨纵膈胸膜侵犯的食管癌术后双侧胸腔置放胸腔闭式引流管的临床意义。方法收集2007年9月~2011年9月60例中段食管癌、术中均行纵膈胸膜切除的患者资料,患者分两组,对照组(A组)和观察组(B组),各30例患者,分别行单侧和双侧胸腔闭式引流,观察两组住院期间胸腔引流量、拔管时间、术后右侧再次放置引流管例数、住院天数、术后并发症发生情况(肺不张、右侧胸腔积液)。结果对照组术后平均胸腔引流量940ml、拔管时间5.5d、术后右侧再次放置引流管8例,住院16.4d、术后并发症发生情况(肺不张6例、右侧胸腔积液9例),而观察组术后平均胸腔引流量1300ml、拔管时间3.25d、住院12d、发生肺不张3例,无再置管。结论对于食管癌侵犯纵膈胸膜,纵膈胸膜切除者,双侧胸腔置放引流管,能达到充分引流,缩短住院时间,减少肺不张、包裹性胸腔积液并发症目的。%Objective to study the clinical significance on the bilateral closed thoracic drainage tube placement of esophageal carcinoma postoperation of mediastinal pleura invasion Methods Col ection 60 cases Middle esophageal cancer patients information,whose mediastinal pleura were resected during the operation course between September 2007to September 2011.patients were assigned into 2 groups,control group(groupA)and observation group ( groupB),30 cases per group,respectively one side and double side closed thoracic drainage,observing two Groups thoracic drainage volume、the time of pul ing tube、the number of placing drainage tube in the right side postoperation、hospitalization days and postoperation complications (pulmonary atelectasi and righthydrothorax). Results Control group had average hydrothorax volume of 940ml postoperation,tracheal extubation time 5.5days,8 cases were placed drainage tube postoperation again,hospitalization 16.4 days,and postoperation

  5. Product Placement in Cartoons

    Directory of Open Access Journals (Sweden)

    Irena Oroz Štancl

    2014-06-01

    Full Text Available Product placement is a marketing approach for integrating products or services into selected media content. Studies have shown that the impact of advertising on children and youth are large, and that it can affect their preferences and attitudes. The aim of this article is to determine the existing level of product placement in cartoons that are broadcast on Croatian television stations. Content analysis of cartoons in a period of one month gave the following results: in 30% of cartoons product placement was found; most product placement were visual ads, in 89%, however, auditory product placement and plot connection was also found. Most ads were related to toys and it is significant that even 65% of cartoons are accompanied by a large amount of products available on the Croatian market. This is the result of two sales strategies: brand licensing (selling popular cartoon characters to toys, food or clothing companies and cartoon production based on existing line of toys with the sole aim of making their sales more effective.

  6. Needle placement accuracy during stereotactic localization mammography

    International Nuclear Information System (INIS)

    Aim: To derive a mathematical model to describe the relationship between lesion position in the breast and measurements derived from the stereoradiographs to enable more accurate sampling of a lesion during stereotactic mammographic needle placement. Materials and methods: The affect that registration errors have on the accuracy of needle placement when identifying the lesion on the stereoradiographs was investigated using the mathematical model. Results: The focus-to-film distance of the x-ray tube and the horizontal distance of the lesion from the centre of rotation have little effect on error. Registration errors for lesions lying at a greater perpendicular distance in the breast from the centre of rotation produce smaller localization errors when compared with lesions sited closer. Lesion registration errors during marking of the stereoradiographs are exacerbated by decreasing the angle of x-ray tube swing. Conclusions: When problems are encountered in making an accurate registration of the lesion on the stereoradiographs, consider the following error reducing strategies: (1) employ an approach that places the lesion the maximum distance away from the film cassette; (2) avoid reducing the angle of tube swing; and (3) consider sampling superficial and deep to, as well as at, the location indicated. The possibility of erroneous tissue sampling should be borne in mind when reviewing the pathology report.

  7. Radiologic placement of Hickman catheters

    International Nuclear Information System (INIS)

    Hickman catheter inserter has previously been predominantly accomplished surgically by means of venous cutdown or percutaneous placement in the operating room. The authors describe their method and results for 55 consecutive percutaneous placements of Hickman catheters in the interventional radiology suite. Complication rates were comparable to those for surgical techniques. Radiologic placement resulted in increased convenience, decreased time and cost of insertion, and super fluoroscopic control of catheter placement and any special manipulations. Modern angiographic materials provide safer access to the subclavian vein than traditional methods. The authors conclude that radiologic placement of Hickman catheters offers significant advantages over traditional surgical placement

  8. When to change a tracheostomy tube.

    Science.gov (United States)

    White, Alexander C; Kher, Sucharita; O'Connor, Heidi H

    2010-08-01

    Knowing when to change a tracheostomy tube is important for optimal management of all patients with tracheostomy tubes. The first tracheostomy tube change, performed 1-2 weeks after placement, carries some risk and should be performed by a skilled operator in a safe environment. The risk associated with changing the tracheostomy tube then usually diminishes over time as the tracheo-cutaneous tract matures. A malpositioned tube can be a source of patient distress and patient-ventilator asynchrony, and is important to recognize and correct. Airway endoscopy can be helpful to ensure optimal positioning of a replacement tracheostomy tube. Some of the specialized tracheostomy tubes available on the market are discussed. There are few data available to guide the timing of routine tracheostomy tube changes. Some guidelines are suggested. PMID:20667154

  9. Merging Job Placement.

    Science.gov (United States)

    Wilson, Ben, Jr.

    1980-01-01

    Prospective added secondary school involvement with job placement is of particular concern to those responsible for school policy, finance, curriculum, and administration. Forty considerations are identified which are beneficial in developing content areas of guidance programs. These could be included in career education programs as sub-topics.…

  10. Aerator Placement Strategies

    Science.gov (United States)

    The purpose of this study was to determine the effects on fish production, water quality and economics of concentrating paddlewheel aeration in large commercial ponds, compared to the current method of aerator placement. Ten 17-acre ponds (approximately 600 X 1300 ft) were brought into the study in ...

  11. Product placement werkt, ook onbewust

    NARCIS (Netherlands)

    Roelofs, G.H.M.; Ketelaar, P.E.; Gisbergen, M.S. van

    2008-01-01

    Product placement is een goed alternatief voor televisiecommercials. Consumenten waarderen product placement beter en ze vertonen nauwelijks reclamevermijdend gedrag. En: consumenten blijken geadverteerde merken goed te onthouden, zo blijkt uit onderzoek van de Radboud Universiteit Nijmegen in samen

  12. Impacted material placement plans

    International Nuclear Information System (INIS)

    Impacted material placement plans (IMPP) are documents identifying the essential elements in placing remediation wastes into disposal facilities. Remediation wastes or impacted material(s) are those components used in the construction of the disposal facility exclusive of the liners and caps. The components might include soils, concrete, rubble, debris, and other regulatory approved materials. The IMPP provides the details necessary for interested parties to understand the management and construction practices at the disposal facility. The IMPP should identify the regulatory requirements from applicable DOE Orders, the ROD(s) (where a part of a CERCLA remedy), closure plans, or any other relevant agreements or regulations. Also, how the impacted material will be tracked should be described. Finally, detailed descriptions of what will be placed and how it will be placed should be included. The placement of impacted material into approved on-site disposal facilities (OSDF) is an integral part of gaining regulatory approval. To obtain this approval, a detailed plan (Impacted Material Placement Plan [IMPP]) was developed for the Fernald OSDF. The IMPP provides detailed information for the DOE, site generators, the stakeholders, regulatory community, and the construction subcontractor placing various types of impacted material within the disposal facility

  13. Geometric leaf placement strategies

    International Nuclear Information System (INIS)

    Geometric leaf placement strategies for multileaf collimators (MLCs) typically involve the expansion of the beam's-eye-view contour of a target by a uniform MLC margin, followed by movement of the leaves until some point on each leaf end touches the expanded contour. Film-based dose-distribution measurements have been made to determine appropriate MLC margins-characterized through an index d90-for multileaves set using one particular strategy to straight lines lying at various angles to the direction of leaf travel. Simple trigonometric relationships exist between different geometric leaf placement strategies and are used to generalize the results of the film work into d90 values for several different strategies. Measured d90 values vary both with angle and leaf placement strategy. A model has been derived that explains and describes quite well the observed variations of d90 with angle. The d90 angular variations of the strategies studied differ substantially, and geometric and dosimetric reasoning suggests that the best strategy is the one with the least angular variation. Using this criterion, the best straightforwardly implementable strategy studied is a 'touch circle' approach for which semicircles are imagined to be inscribed within leaf ends, the leaves being moved until the semicircles just touch the expanded target outline

  14. Percutaneous nephrostomy: placement under laser guidance and real-time CT fluoroscopy

    International Nuclear Information System (INIS)

    The purpose of this paper is to present our experience with real-time computed tomography (CT) fluoroscopy guided percutaneous nephrostomy (PNT) and to describe this technique involving puncture under laser guidance. We attempted 30 placements in 25 patients: puncture was directed by laser guidance and placement of the tube was made under real time CT fluoroscopy. 25 procedures were performed in prone position and 5 procedures in the supine position. The time necessary for the procedure ranged from 10 to 45 min (mean 25 min). The average duration of CT fluoroscopy per placement was 49 seconds (range 7-110 s). The PNT placement was successful as a sole procedure including puncture and catheter placement in 24 of 30 cases; in the remainder of cases, puncture was performed under CT guidance but the catheter was definitively positioned in conventional fluoroscopy. The CT fluoroscopy technique allows routine, efficient and safe PNT placement, especially when encountering difficult access to the pelvicaliceal system. (orig.)

  15. Endoscopically nasojejunal feeding tube placement for enteral nutrition in gastric cancer patients with antrum or pyloric obstruction%胃窦癌伴胃窦腔或幽门梗阻经胃镜放置鼻空肠营养管的临床应用

    Institute of Scientific and Technical Information of China (English)

    曹燕飞; 周辛欣; 季峰

    2012-01-01

    目的 比较胃窦癌伴胃窦腔或幽门梗阻患者经胃镜放置鼻空肠营养管(endoscopically nasojejunal feeding tube placement,ENFTP)行肠内营养(enteral nutrition,EN)与全胃肠外营养(total parenteral nutrition,TPN)的临床疗效.方法 选择胃窦癌伴胃窦腔或幽门梗阻患者行ENFTP的患者共100例,选取同期行TPN治疗的患者50例,分别观察两组在营养支持后1、2周的血红蛋白、血清白蛋白、血脂、体重等营养指标,平均住院天数,营养支持平均每日费用,并发症的发生率及营养支持后能耐受化疗或手术的例数.结果 营养支持后1周,ENFTP组的营养指标无明显变化(均P >0.05).TPN组的血红蛋白、肌酐及体重较治疗前有进一步下降(均P<0.05).营养支持后2周,ENFTP组血清总蛋白及白蛋白较治疗前升高明显(P<0.05),而TPN组在血红蛋白、血肌酐、血清白蛋白较治疗前下降明显,与ENFTP组比差异有统计学意义(P<0.05).两组其他营养指标在营养支持后2周差异无统计学意义(P >0.05).ENFTP组在平均住院日、营养支持平均每日费用、并发症的发生率方面均低于TPN组(P<0.05).ENFTP组与TPN组在营养支持后耐受手术或化疗的例数无明显差异(P >0.05).结论 胃窦癌伴胃窦腔或幽门梗阻患者ENFTP较TPN更能有效的维持或改善其营养状况,并缩短患者的住院天数,减少住院费用,提高患者的生存质量.经胃镜放置空肠营养管在胃窦癌伴胃窦腔或幽门梗阻患者中的使用是简便快捷、安全有效的,值得临床推广.%Objective To evaluate the application of endoscopically nasojejunal feeding tube placement (ENFTP) for enteral nutrition (EN) in gastric cancer patients with antrum or pyloric obstruction. Methods One hundred and fifty gastric cancer patients with antrum or pyloric obstruction received ENFTP EN (n=100) or total parenteral nutrition (TPN, n=50). Hemoglobin, serum albumin, blood lipids, weight and

  16. Placement of an implantable port catheter in the biliary stent: an experimental study in dogs

    International Nuclear Information System (INIS)

    To investigate the feasibility of port catheter placement following a biliary stent placement. We employed 14 mongrel dogs as test subject and after the puncture of their gaIl bladders using sonographic guidance, a 10-mm in diameter metallic stent was placed at the common duct. In 12 dogs, a 6.3 F port catheter was placed into the duodenum through the common duct and a port was secured at the subcutaneous space following stent placement. As a control group, an 8.5 F drain tube was placed into the gallbladder without port catheter placement in the remaining two dogs. Irrigation of the bile duct was performed every week by injection of saline into the port, and the port catheter was replaced three weeks later in two dogs. Information relating to the success of the procedure, complications and the five-week follow-up cholangiographic findings were obtained. Placement of a biliary stent and a port catheter was technically successful in 13 (93%) dogs, while stent migration (n=3), gallbladder rupture (n=1) and death (n=5) due to subcutaneous abscess and peritonitis also occurred. The follow-up was achieved in eight dogs (seven dogs with a port catheter placement and one dog with a drain tube placement). Irrigation of the bile duct and port catheter replacement were successfully achieved without any complications. Cholangiograms obtained five weeks after stent placement showed diffuse biliary dilation with granulation tissue formation. However, focal biliary stricture was seen in one dog with stent placement alone. Placement of a port catheter following biliary stent placement seems to be feasible. However, further investigation is necessary to reduce the current complications

  17. Product Placement and Brand Equity

    OpenAIRE

    Margherita Corniani

    2001-01-01

    Product placement is the planned insertion of a brand within a movie, a fiction, etc. It can be used with other communication tools (i.e. advertising, sales promotions, etc.) in order to disseminate brand awareness and characterize brand image, developing brand equity. In global markets, product placement is particularly useful for improving brand equity of brands with a well established brand awareness.

  18. Product Placement and Brand Equity

    OpenAIRE

    Margherita Corniani

    2000-01-01

    Product placement is the planned insertion of a brand within a movie, a fiction, etc. It can be used with other communication tools (i.e. advertising, sales promotions, etc.) in order to disseminate brand awareness and characterize brand image, developing brand equity. In global markets, product placement is particularly useful for improving brand equity of brands with a well established brand awareness.

  19. Gastrostomy Tube (G-Tube)

    Science.gov (United States)

    ... endoscope (a thin, flexible tube with a tiny camera and light at the tip) inserted through the ... Nemours Foundation, iStock, Getty Images, Corbis, Veer, Science Photo Library, Science Source Images, Shutterstock, and Clipart.com

  20. Ear tube insertion

    Science.gov (United States)

    Myringotomy; Tympanostomy; Ear tube surgery; Pressure equalization tubes; Ventilating tubes; Ear infection - tubes; Otitis - tubes ... trapped fluid can flow out of the middle ear. This prevents hearing loss and reduces the risk ...

  1. Coiled tubing

    International Nuclear Information System (INIS)

    Oil and gas wells that flow on initial completion eventually reach a condition of liquid loading that kills the wells. This results form declining reservoir pressure, decreased gas volume (velocity), increased water production and other factors that cause liquids to accumulate at the bottom of the well and exert back pressure on the formation. This restricts or in some cases prevents fluid entry into the wellbore form the formation. Flowing production can be restored or increased by reducing surface backpressure, well bore stimulation, pressure maintenance or by installing a string of smaller diameter tubing. This paper reports on installation (hanging off) of a concentric string of coiled tubing inside existing production tubing which is an economically viable, safe, convenient and effective alterative for returning some of these liquid loaded )logged-up) wells to flowing status

  2. Decreasing suprapubic tube-related injuries: results of case series and comprehensive literature review.

    Science.gov (United States)

    Tompkins, Andrew J; Travis, Michelle; Watne, Reed E; Lasser, Michael; Ellsworth, Pamela

    2014-01-01

    Bowel-related injuries are known complications of suprapubic tube (SPT) catheterization placement. A literature review was conducted to determine identifiable risk factors for bowel injury. Results on the analysis of 25 cases are presented along with a proposed algorithm to aid in choosing between open, percutaneous, and image-guided methods of placement. PMID:24716375

  3. Ear Tubes

    Science.gov (United States)

    ... of the ear drum or eustachian tube, Down Syndrome, cleft palate, and barotrauma (injury to the middle ear caused by a reduction of air pressure, ... specialist) may be warranted if you or your child has experienced repeated ... fluid in the middle ear, barotrauma, or have an anatomic abnormality that ...

  4. 重症急性胰腺炎经胃镜放置空肠营养管营养支持的价值%Clinical value of endoscopic placement of nasojejunal feeding tube for nutritional support in patients with severe acute pancreatitis

    Institute of Scientific and Technical Information of China (English)

    季峰; 焦春花; 胡裕耀; 徐勤伟; 赵瑾; 陈卫星

    2009-01-01

    目的 探讨经胃镜放置空肠营养管行肠内营养支持(ENFTP)对重症急性胰腺炎患者的临床价值.方法 回顾性分析经ENFTP及同期行完全胃肠外营养(TPN)支持的重症急性胰腺炎患者47例及50例,比较两组患者营养支持前及支持后1、2、4周血常规、血糖、肝肾功能、血脂、血钙水平变化、各种并发症发生率、死亡率、营养支持时间、营养支持平均每日费用、机械通气时间、重症监护病房(ICU)监护时间及平均住院时间.结果 营养支持4周后,ENFTP组血红蛋白、白蛋白及空腹高血糖较TPN组恢复显著(P值均<0.05);ENFTP组胰周、胆道感染率、导管感染败血症、营养支持时间、营养支持平均每日费用及住院时间均显著低于TPN组(P值均<0.05),此外ENFTP组能更有效改善APACHEⅡ评分(P<0.05).结论 ENFTP在重症急性胰腺炎患者中应用安全经济.%Objective To evaluate the clinical value of endoscopically nasojejunal feeding tube placement (ENFTP) for nutritional support in patients with severe acute pancreatitis (SAP). Methods Those SAP patients who treated with ENFTP (n= 47) or with total parenteral nutrition (TPN) (n=50) were retrospectively analyzed for laboratory parameters before and 1,2 and 4 weeks after nutrition support. Outcomes in the two groups were compared with respect to complications,mortality, duration of feeding, feeding costs,mechanical ventilation time and length of ICU or hospital stay. Results Four weeks after nutrition sypport, the hemoglobin and albumin were increased in ENFTP group as compared to TPN groups (P < 0. 05), while the blood sugar was decreased significant in ENFTP group than in TPN group (P<0.05). The incidence of peripancreatic or biliary infection and catheter-related infection were lower in ENFTP group than in TPN group. Duration of feeding and hospital stay were shorter, and nutrition cost was lower in ENFTP group (P<0.05). In addition, the APACHE Ⅱ score was

  5. Optimal obstacle placement with disambiguations

    OpenAIRE

    Ceyhan, Elvan; Aksakalli, Vural

    2012-01-01

    arXiv:1201.5076v3 [stat.AP] 14 Jan 2013 The Annals of Applied Statistics 2012, Vol. 6, No. 4, 1730–1774 DOI: 10.1214/12-AOAS556 c Institute of Mathematical Statistics, 2012 OPTIMAL OBSTACLE PLACEMENT WITH DISAMBIGUATIONS By Vural Aksakalli and Elvan Ceyhan Istanbul S¸ehir University and Ko¸c University We introduce the optimal obstacle placement with disambigua-tions problem wherein the goal is to place true obstacles in an en-vironment cluttered with false obst...

  6. Extension for prevention: margin placement.

    Science.gov (United States)

    Larson, Thomas D

    2012-01-01

    This article will review the concept of extension for prevention popularized by G.V. Black around the early 1900s. Concepts of extension and prevention have changed over the years with a more informed knowledge of the caries process, improved materials, cutting instruments, and techniques. The reasons for placement of the outline form relative to the tooth morphology, gingival tissue, relationship to adjacent teeth, and the choice of material will be described for all of the materials used in restorative dentistry. Research will be cited to support the scientific basis for outline form placement. PMID:22662468

  7. Chemical placement in heterogeneous and long reach horizontal wells

    Energy Technology Data Exchange (ETDEWEB)

    Stalker, Robert; Wahid, Fazrie; Graham, Gordon M.

    2006-03-15

    The effective placement of chemical squeeze treatments in heterogeneous wells and long reach horizontal wells has proved a significant challenge, with various factors including heterogeneity, crossflow and pressure gradients between otherwise non-communicating zones within the well, all contributing to an uneven placement of the scale squeeze treatment into the reservoir. Current methods to circumvent these problems often rely on extremely expensive coiled tubing operations, staged diversion (temporary shut off) treatments or by designing treatments to deliberately overdose some zones in order to gain placement in other (e.g. low permeability) zones. Moreover for deepwater sub sea horizontal wells the costs associated with ''spot'' treating along the length of horizontal wells by coil tubing tractor operations can often be prohibitively expensive. For other very near well bore treatments such as acid stimulation a number of self diverting strategies including gelled acid treatments, staged viscoelastic surfactant treatments and foams have been applied in field treatments with some success. However the properties which make such treatments applicable for acid stimulation may also make them inappropriate for bullhead scale squeeze treatments. Recent work by the current authors has however indicated the possible benefits of using modified injection fluids to aid uniform scale inhibitor placement in such wells in order to effect more even placement. In summary this paper will describe the various options available for achieving self diversion and describes the potential drawbacks associated with the viscous placement fluids commonly used for acid simulation techniques. In addition, various simulation packages commonly used for scale related calculations are reviewed and their limitations, primarily due to the inherent assumptions made and input parameters used, for modelling squeeze treatments using such modified fluids are described. The paper

  8. Electron tube

    Energy Technology Data Exchange (ETDEWEB)

    Suyama, Motohiro (Hamamatsu, JP); Fukasawa, Atsuhito (Hamamatsu, JP); Arisaka, Katsushi (Los Angeles, CA); Wang, Hanguo (North Hills, CA)

    2011-12-20

    An electron tube of the present invention includes: a vacuum vessel including a face plate portion made of synthetic silica and having a surface on which a photoelectric surface is provided, a stem portion arranged facing the photoelectric surface and made of synthetic silica, and a side tube portion having one end connected to the face plate portion and the other end connected to the stem portion and made of synthetic silica; a projection portion arranged in the vacuum vessel, extending from the stem portion toward the photoelectric surface, and made of synthetic silica; and an electron detector arranged on the projection portion, for detecting electrons from the photoelectric surface, and made of silicon.

  9. Neutron tubes

    Science.gov (United States)

    Leung, Ka-Ngo; Lou, Tak Pui; Reijonen, Jani

    2008-03-11

    A neutron tube or generator is based on a RF driven plasma ion source having a quartz or other chamber surrounded by an external RF antenna. A deuterium or mixed deuterium/tritium (or even just a tritium) plasma is generated in the chamber and D or D/T (or T) ions are extracted from the plasma. A neutron generating target is positioned so that the ion beam is incident thereon and loads the target. Incident ions cause D-D or D-T (or T-T) reactions which generate neutrons. Various embodiments differ primarily in size of the chamber and position and shape of the neutron generating target. Some neutron generators are small enough for implantation in the body. The target may be at the end of a catheter-like drift tube. The target may have a tapered or conical surface to increase target surface area.

  10. Straightening tubes

    International Nuclear Information System (INIS)

    Hexagonal wrapper tubes, especially for nuclear reactor core sub-assemblies, may suffer from unacceptable bow as a result of welding wear pads to the wrapper and heat treatment. Straightening of the bow is effected by a method wherein at each of a series of axially spaced locations the faces or vertices of the tube are measured relative to a reference to determine the direction of bow at the locations. From these measurements, the appropriate axial locations for the application of corrective loading can be determined, whereby by application of the loading at a selected face or vertex for such measurements the bow is reduced. Such loading, by an actuator, can be repeated at the locations until the bow is reduced to within tolerances. (author)

  11. When Placement People Are Displaced.

    Science.gov (United States)

    Ehrlich, Marianne

    1991-01-01

    Describes the experiences and insights of five laid-off placement people who discover the trauma of job loss. Discusses grieving a job loss, the emotions involved, the challenge of finding a new job, guilt faced by survivors, and advice to colleagues. (NB)

  12. The Placement Professional as Marketeer.

    Science.gov (United States)

    Walz, Garry R.

    1988-01-01

    Discusses resistance of helping professions to marketing. Defines human services marketing. Describes forces that are placing human services in an increasingly competitive position. Makes recommendations to enhance the image of career planning and placement services and increase their usage. Concludes that by adopting a marketeer orientation,…

  13. Stent placement for tracheobronchial disease

    Energy Technology Data Exchange (ETDEWEB)

    Walser, Eric M. [Department of Radiology, Rt 0709, University of Texas Medical Branch, 301 University Blvd., Galveston, TX 77555-0709 (United States)]. E-mail: emwalser@utmb.edu

    2005-09-01

    Early treatment for airway stenoses or occlusions involved open repair with the attendant risks of thoracotomy or sternotomy. With the advent of rigid and, more recently, flexible bronchoscopy, the placement of airway stents has come to the forefront in the treatment of benign and malignant tracheobronchial disease. This paper describes the history of surgical and endoluminal treatment of airway disease and discusses the indications and contraindications for airway stent placement. The advantages and limitations of such therapy are reviewed as well as the procedural details and the imaging evaluation and follow-up of patients undergoing endoluminal treatment. Although the placement of tracheobronchial stents is now primarily performed by interventional pulmonologists, imaging anatomically complex airway disease also requires the skills of an accomplished cross-sectional radiologist. Additionally, interventional radiologists using fluoroscopic guidance and alternative access routes to the airways can salvage failed bronchoscopic procedures and primarily treat selected cases. Due to the importance of pre- and post-procedural imaging in these patients, radiologists should be aware of airway anatomy suitable for stent placement and the appearance of various complications of this procedure.

  14. PRODUCT PLACEMENT IN BRAND PROMOTION

    Directory of Open Access Journals (Sweden)

    Alicja Mikołajczyk

    2015-06-01

    Full Text Available Product placement can have a significant impact on brand awareness and customer purchasing decisions. The article discusses techniques applied in the mass media against the EU legal background and the opportunities it offers in reaching the target audience.

  15. Blind bedside insertion of small bowel feeding tubes.

    LENUS (Irish Health Repository)

    Duggan, SN

    2009-12-01

    The use of Naso-Jejunal (NJ) feeding is limited by difficulty in feeding tube placement. Patients have traditionally required transfer to Endoscopy or Radiology for insertion of small bowel feeding tubes, with clear resource implications. We hypothesised that the adoption of a simple bedside procedure would be effective and reduce cost. Clinical nutrition and nurse specialist personnel were trained in the 10\\/10\\/10 method of blind bedside NJ insertion.

  16. Mathematics Placement at the University of Illinois

    Science.gov (United States)

    Ahlgren Reddy, Alison; Harper, Marc

    2013-01-01

    Data from the ALEKS-based placement program at the University of Illinois is presented visually in several ways. The placement exam (an ALEKS assessment) contains precise item-specific information and the data show many interesting properties of the student populations of the placement courses, which include Precalculus, Calculus, and Business…

  17. Advanced Placement: More than a Test.

    Science.gov (United States)

    Colwell, Richard

    1990-01-01

    Encourages music teachers to work with students interested in advanced placement (AP) music courses. Discusses the logistics and advantages of placing students in these courses. Describes the Advanced Placement Listening and Literature and the Advanced Placement Theory courses and examinations. Outlines the examination scoring method and looks at…

  18. 28 CFR 551.24 - Child placement.

    Science.gov (United States)

    2010-07-01

    ... Birth Control, Pregnancy, Child Placement, and Abortion § 551.24 Child placement. (a) The Warden may not permit the inmate's new born child to return to the institution except in accordance with the Bureau of... 28 Judicial Administration 2 2010-07-01 2010-07-01 false Child placement. 551.24 Section...

  19. photomultiplier tubes

    CERN Multimedia

    photomultiplier tubes. A device to convert light into an electric signal (the name is often abbreviated to PM). Photomultipliers are used in all detectors based on scintillating material (i.e. based on large numbers of fibres which produce scintillation light at the passage of a charged particle). A photomultiplier consists of 3 main parts: firstly, a photocathode where photons are converted into electrons by the photoelectric effect; secondly, a multiplier chain consisting of a serie of dynodes which multiply the number of electron; finally, an anode, which collects the resulting current.

  20. photomultiplier tube

    CERN Multimedia

    photomultiplier tubes. A device to convert light into an electric signal (the name is often abbreviated to PM). Photomultipliers are used in all detectors based on scintillating material (i.e. based on large numbers of fibres which produce scintillation light at the passage of a charged particle). A photomultiplier consists of 3 main parts: firstly, a photocathode where photons are converted into electrons by the photoelectric effect; secondly, a multiplier chain consisting of a serie of dynodes which multiply the number of electron; finally, an anode, which collects the resulting current.

  1. Product placement and its aplication in foreign film

    OpenAIRE

    Vaněk, Tomáš

    2010-01-01

    Marketing and commertial communication and position of product placement within it, legislature governing product placement and its aplication, history of product placement, forms of product placement, use of product placement within marketing campaign, aplication of product placement in movie Casino Royale.

  2. Termination Issues in Residential Placement

    OpenAIRE

    Mann-Feder, Varda

    2003-01-01

    The termination phase of residential child care placement has a powerful effect on postplacement adjustment. This article reviews relevant literature from a range of helping/caring professions and outlines implications for managing termination with children and youth in care. Major themes are: termination elicits ambivalence and can manifest as behavioural regression; intervention during the termination phase can have significant impact; and the capacity of child and youth care workers to ...

  3. Family ties and child placement.

    Science.gov (United States)

    Colón, F

    1978-09-01

    The fundamental premise of this paper is the primacy of the child's experience of biological-familial continuity in establishing his sense of self and personal significance. This paper examines the effects of current child placement practices on the child's ties to his biological, foster, and adoptive families. It explores alternative practices that would take into account biological-familial continuity. Comment is invited. PMID:744218

  4. Photomultiplier tubes in the MiniBooNE experiment

    International Nuclear Information System (INIS)

    The detector for the MiniBooNE [Proposal for the MiniBooNE experiment: ] experiment at the Fermi National Accelerator Laboratory employs 15208in. Hamamatsu models R1408 and R5912 photomultiplier tubes with custom-designed bases. Tests were performed to determine the dark rate, charge and timing resolutions, double-pulsing rate, and desired operating voltage for each tube, so that the tubes could be sorted for optimal placement in the detector. Seven phototubes were tested to find the angular dependence of their response. After the Super-K phototube implosion accident, an analysis was performed to determine the risk of a similar accident with MiniBooNE

  5. Photomultiplier Tubes in the MiniBooNE Experiment

    CERN Document Server

    Brice, S J; Conrad, J M; Fleming, B; Gladstone, L; Hawker, E; Killewald, P; May, J; McKenney, S; Nienaber, P; Roe, B; Sandberg, V; Smith, D; Wysocki, M

    2010-01-01

    The detector for the MiniBooNE experiment at the Fermi National Accelerator Laboratory employs 1520 8 inch Hamamatsu models R1408 and R5912 photomultiplier tubes with custom-designed bases. Tests were performed to determine the dark rate, charge and timing resolutions, double-pulsing rate, and desired operating voltage for each tube, so that the tubes could be sorted for optimal placement in the detector. Seven phototubes were tested to find the angular dependence of their response. After the Super-K phototube implosion accident, an analysis was performed to determine the risk of a similar accident with MiniBooNE.

  6. m-Level rook placements

    OpenAIRE

    Barrese, Kenneth; Loehr, Nicholas; Remmel, Jeffrey; Sagan, Bruce E.

    2013-01-01

    Goldman, Joichi, and White proved a beautiful theorem showing that the falling factorial generating function for the rook numbers of a Ferrers board factors over the integers. Briggs and Remmel studied an analogue of rook placements where rows are replaced by sets of $m$ rows called levels. They proved a version of the factorization theorem in that setting, but only for certain Ferrers boards. We generalize this result to any Ferrers board as well as giving a p,q-analogue. We also consider a ...

  7. The Forms and Analysis of Product Placement

    OpenAIRE

    Hlaváček, Josef

    2014-01-01

    The aim of this thesis is to describe marketing communication and product placement in the theoretical part, consequently analyze examples of product placement from the practice and last but not least also analyze the perception and examples of product placement based on the survey research. Therefore the thesis is divided into three main parts. The first, theoretical part, describes the marketing mix, concept of communication, communication mix, new forms of communication, integrated marketi...

  8. Tracheostomy tube - eating

    Science.gov (United States)

    ... this page: //medlineplus.gov/ency/patientinstructions/000464.htm Tracheostomy tube - eating To use the sharing features on ... when you swallow foods or liquids. Eating and Tracheostomy Tubes When you get your tracheostomy tube, or ...

  9. Product placement of computer games in cyberspace.

    Science.gov (United States)

    Yang, Heng-Li; Wang, Cheng-Shu

    2008-08-01

    Computer games are considered an emerging media and are even regarded as an advertising channel. By a three-phase experiment, this study investigated the advertising effectiveness of computer games for different product placement forms, product types, and their combinations. As the statistical results revealed, computer games are appropriate for placement advertising. Additionally, different product types and placement forms produced different advertising effectiveness. Optimum combinations of product types and placement forms existed. An advertisement design model is proposed for use in game design environments. Some suggestions are given for advertisers and game companies respectively. PMID:18721087

  10. Titanium condenser tubes

    International Nuclear Information System (INIS)

    The corrosion resistance of titanium in sea water is extremely excellent, but titanium tubes are expensive, and the copper alloy tubes resistant in polluted sea water were developed, therefore they were not used practically. In 1970, ammonia attack was found on the copper alloy tubes in the air-cooled portion of condensers, and titanium tubes have been used as the countermeasure. As the result of the use, the galvanic attack an copper alloy tube plates with titanium tubes as cathode and the hydrogen absorption at titanium tube ends owing to excess electrolytic protection were observed, but the corrosion resistance of titanium tubes was perfect. These problems can be controlled by the application of proper electrolytic protection. The condensers with all titanium tubes adopted recently in USA are intended to realize perfectly no-leak condensers as the countermeasure to the corrosion in steam generators of PWR plants. Regarding large condensers of nowadays, three problems are pointed out, namely the vibration of condenser tubes, the method of joining tubes and tube plates, and the tubes of no coolant leak. These three problems in case of titanium tubes were studied, and the problem of the fouling of tubes was also examined. The intervals of supporting plates for titanium tubes should be narrowed. The joining of titanium tubes and titanium tube plates by welding is feasible and promising. The cleaning with sponge balls is effective to control fouling. (Kako, I.)

  11. Management of urinary retention in an austere environment: suprapubic catheter placement.

    Science.gov (United States)

    Smith, Christopher P; Sorrells, Andrew; Coburn, Michael

    2010-01-01

    Urinary retention is a true urologic emergency. First-line treatment with a transurethral catheter can and will fail. SOF medics need a reliable and durable method to resolve this problem using a minimal amount of resources and time. Current SOF Medical Handbook guidance for the management of unsuccessful urethral catheterization is inadequate. This article and accompanying video link, functions as a starting point for incorporating suprapubic tube placement in the training regimen and therapeutic armamentarium of SOF medical personnel. PMID:21049433

  12. Private Placement Debt Financing for Public Entities

    Science.gov (United States)

    Holman, Lance S.

    2010-01-01

    Private placement financing is a debt or capital lease obligation arranged between a municipality or a 501(c) (3) not-for-profit organization and a single sophisticated institutional investor. The investor can be a bank, insurance company, finance company, hedge fund, or high-net worth individual. Private placement financing is similar to…

  13. Understanding Successful Sandwich Placements: A Bourdieusian Approach

    Science.gov (United States)

    Clark, Martyn; Zukas, Miriam

    2016-01-01

    Sandwich placements and other integrated work and study schemes are increasingly advocated as a key means by which universities can promote students' employability. However, there is little understanding of how successful placements work in terms of facilitating learning and development. Drawing on three longitudinal case studies of students who…

  14. Temporary mushroom like covered stent placement with transnasal esophageal fistula abscess drainage for gastroesophageal anastomotic fistula

    International Nuclear Information System (INIS)

    Objective: To investigate the therapeutic effects on gastroesophageal anastomotic fistula with temporary placing covered stent of mushroom shape and transnasal drainage of gastroesophageal anastomotic abscess. Methods: For 8 patients with gastroesophageal anastomotic fistula, under fluoroscopic guidance, the drainage tube was put into the abscess cavity through nasal cavity and esophageal fistula, then stent was implanted within the esophagus. The abscess cavity was aspirated and esophagogram was taken in suitable time. Retaining the drainage tube about one month and then the stent was withdrawn after one week of the taken out of the former. Results: The drainage of abscess and stent placement was successful. The drainage tube was pulled out during 14-21 days after placement. The stent should be removed within one month. All fistulas were closed up and the abscesses disappeared. Conclusions: It is a safe, efficient, complicationless, non-invasive method to treat gastroesophageal anastomotic fistula with temporary placing covered stent with mushroom shape and drainage of abscess through nasal cavity and esophagus. Temporary mushroom-like covered stent placement with transnasal gastroesophageal anastomotic abscess drainage is a safe efficient, complication-less non-invasive method used interventionally. (authors)

  15. Familial placement of Wightia (Lamiales)

    DEFF Research Database (Denmark)

    Zhou, Qing-Mei; Jensen, Søren Rosendal; Liu, Guo-Li;

    2014-01-01

    The familial placement of Wightia has long been a problem. Here, we present a comprehensive phylogenetic inspection of Wightia based on noncoding chloroplast loci (the rps16 intron and the trnL–F region) and nuclear ribosomal internal transcribed spacer, and on chemical analysis. A total of 70...... samples (including 51 genera from 13 families of Lamiales) were employed in a molecular study. Phylograms suggest that Wightia is sister to Paulownia or Phrymaceae; species tree shows Wightia and Paulownia are sister groups which clustered with Phrymaceae in an unresolved clade. Chemical evidence shows...... affinity of Wightia to Paulowniaceae. With the addition of morphological, palynological and ecological characters, we suppose a familial position of Wightia belonging to or close to Paulowniaceae. Brandisia (a member of Orobanchaceae) does not have a close relationship with Wightia....

  16. Birth placement and child health.

    Science.gov (United States)

    Fergusson, D M; Horwood, J; Shannon, F T

    1981-07-22

    The standards of health and health care for a sample of 1265 Christchurch children during the period birth to three years were examined. There was a systematic tendency for levels of health care and morbidity to vary with the child's birth placement: in general adopted children had the best standard of health care and the lowest rates of morbidity; children who entered single parent families at birth had the poorest standards of health care and the highest rates of morbidity. Statistical control for family social background including maternal age, education, ethnic status, family size and changes of residence tended to reduce the size of the observed differences. However, even when the results were controlled for these factors children in single parent families still has depressed levels of preventive health care and higher rates of hospital admission. Possible explanations of the differences are discussed. PMID:6944632

  17. Advanced Placement: Access Not Exclusion

    Directory of Open Access Journals (Sweden)

    Wayne J. Camara

    2000-08-01

    Full Text Available Lichten (2000 argues that increased access to AP courses in high schools has led to a decline in AP quality. He uses a mix of actual data, inaccurate data, and fabricated data to support this hypothesis. A logical consequence of his argument is that a reduction in the availability of AP courses will lead to an improvement in AP quality. In this paper, we maintain that his thesis is flawed because he confounds quality with scarcity. In contrast to his narrow conception of quality, quality in the AP context is subject- specific and multifaceted, embracing course content, the teacher, the student as well as the exam. Increased access will not diminish quality. Instead, increased access exposes students to college-level course material, encourages teachers to expand their knowledge domains, serves as a lever for lifting curriculum rigor, and provides students with the opportunity to experience the challenges associated with advanced placement in college.

  18. Artificial Intelligence based technique for BTS placement

    International Nuclear Information System (INIS)

    The increase of the base transceiver station (BTS) in most urban areas can be traced to the drive by network providers to meet demand for coverage and capacity. In traditional network planning, the final decision of BTS placement is taken by a team of radio planners, this decision is not fool proof against regulatory requirements. In this paper, an intelligent based algorithm for optimal BTS site placement has been proposed. The proposed technique takes into consideration neighbour and regulation considerations objectively while determining cell site. The application will lead to a quantitatively unbiased evaluated decision making process in BTS placement. An experimental data of a 2km by 3km territory was simulated for testing the new algorithm, results obtained show a 100% performance of the neighbour constrained algorithm in BTS placement optimization. Results on the application of GA with neighbourhood constraint indicate that the choices of location can be unbiased and optimization of facility placement for network design can be carried out

  19. Genetic Algorithm Approaches for Actuator Placement

    Science.gov (United States)

    Crossley, William A.

    2000-01-01

    This research investigated genetic algorithm approaches for smart actuator placement to provide aircraft maneuverability without requiring hinged flaps or other control surfaces. The effort supported goals of the Multidisciplinary Design Optimization focus efforts in NASA's Aircraft au program. This work helped to properly identify various aspects of the genetic algorithm operators and parameters that allow for placement of discrete control actuators/effectors. An improved problem definition, including better definition of the objective function and constraints, resulted from this research effort. The work conducted for this research used a geometrically simple wing model; however, an increasing number of potential actuator placement locations were incorporated to illustrate the ability of the GA to determine promising actuator placement arrangements. This effort's major result is a useful genetic algorithm-based approach to assist in the discrete actuator/effector placement problem.

  20. Randomized prospective evaluation of nephrostomy tube configuration: impact on postoperative pain

    OpenAIRE

    Derek Weiland; Pedro, Renato N.; Kyle Anderson, J.; Best, Sara L.; Lee Courtney; Kari Hendlin; Johnstone Kim; Manoj Monga

    2007-01-01

    OBJECTIVE: Conduct a prospective randomized single-blind comparison of two nephrostomy catheter designs, evaluating specifically intraoperative placement and postoperative comfort. MATERIALS AND METHODS: The single-blind, prospective randomized trial was conducted with institutional review board approval. All patients undergoing percutaneous nephrolithotomy who gave informed consent were randomized to placement of either a Boston Scientific Flexima 8.3F pigtail nephrostomy tube #27-180 (PIG) ...

  1. 新生儿高位肠梗阻术中经鼻置小肠管术后喂养五例报告%Intraoperative placement of transnasal small intestinal feeding tube during the surgery in 5 cases with high position intestinal obstruction and postoperative feeding

    Institute of Scientific and Technical Information of China (English)

    段光琦; 张敏; 管肖浩; 尹治青

    2012-01-01

    目的 探讨小肠营养管在新生儿高位肠梗阻治疗中的价值.方法 5例新生儿(其中男3例,女2例;早产儿1例,足月儿4例;十二指肠膜状闭锁2例,环状胰腺1例,近段小肠闭锁2例;合并旋转不良1例),行十二指肠隔膜切除、小肠盲端切除及肠吻合手术,合并旋转不良一并解决.术中在吻合完成前,由麻醉师经鼻置入日本CREATE MEDIC CO.,LTD生产的6Fr小肠ED导管[注册号:国食药监械(进)字2007第2661620号],术后24 h拍腹平片,喂糖水;48 h用静脉推注泵从营养管泵入配方奶,奶量据病情渐加至正常.初始3~4 d使用静脉营养,术后1周不拔管经口喂养,辅以管内泵奶,停止补液.10~22 d拔营养管出院.结果 5例全部达到经管喂养目的,减少静脉营养的使用时间和避免造瘘手术.无1例脱管,无黄疸加重,肝肾功能正常.刚开始1例有奶瓣堵管,0.9%氯化钠液冲洗后恢复通畅,之后每次注奶后温开水冲洗管道1次.1例经口足量喂奶出现呕吐,上消化道造影未见吻合口狭窄和瘘,无肠梗阻,拔管喂养症状消失出院.1例腹泻,改无乳糖营养液同时给予复合乳酸菌制剂口服,症状消失.5例最短住院10 d,最长住院22 d,平均住院16 d.术后3~5d体重恢复到出生体重,出院时体重均有增加,平均增长5.5g/(kg·d).结论 小肠营养管对新生儿高位肠梗阻术后营养的维持有重要价值.%Objective To explore the value of employing the small intestinal feeding tube in treating high position intestinal obstruction of newborn infant. Method Five newborn infants (3 males and 2 females; 1 premature infant and 4 fully-mature infants; 2 had membranous atresia of duodenum,1 had annular pancreas,and 2 had proximal small intestine atresia; 1 infant had malrotation ). The duodenal membrane-like atresia and the blind-end of small intestine were removed and intestinal anastomosis was performed,which was combined with intestinal malrotation

  2. Placement of the acetabular component.

    Science.gov (United States)

    Beverland, D E; O'Neill, C K J; Rutherford, M; Molloy, D; Hill, J C

    2016-01-01

    Ideal placement of the acetabular component remains elusive both in terms of defining and achieving a target. Our aim is to help restore original anatomy by using the transverse acetabular ligament (TAL) to control the height, depth and version of the component. In the normal hip the TAL and labrum extend beyond the equator of the femoral head and therefore, if the definitive acetabular component is positioned such that it is cradled by and just deep to the plane of the TAL and labrum and is no more than 4mm larger than the original femoral head, the centre of the hip should be restored. If the face of the component is positioned parallel to the TAL and psoas groove the patient specific version should be restored. We still use the TAL for controlling version in the dysplastic hip because we believe that the TAL and labrum compensate for any underlying bony abnormality. The TAL should not be used as an aid to inclination. Worldwide, > 75% of surgeons operate with the patient in the lateral decubitus position and we have shown that errors in post-operative radiographic inclination (RI) of > 50° are generally caused by errors in patient positioning. Consequently, great care needs to be taken when positioning the patient. We also recommend 35° of apparent operative inclination (AOI) during surgery, as opposed to the traditional 45°. PMID:26733639

  3. Placement of percutaneous transhepatic biliary stent using a silicone drain with channels

    Institute of Scientific and Technical Information of China (English)

    Hiroshi Yoshida; Yasuhiro Mamada; Nobuhiko Taniai; Sho Mineta; Yoshiaki Mizuguchi; Yoichi Kawano; Junpei Sasaki; Yoshiharu Nakamura; Takayuki Aimoto; Takashi Tajiri

    2009-01-01

    This report describes a method for percutaneous transhepatic biliary stenting with a BLAKE Silicone Drain, and discusses the usefulness of placement of the drain connected to a J-VAC Suction Reservoir for the treatment of stenotic hepaticojejunostomy.Percutaneous transhepatic biliary drainage was performed under ultrasonographic guidance in a patient with stenotic hepaticojejunostomy after hepatectomy for hepatic hilum malignancy. The technique used was as follows. After dilatation of the drainage root, an 11-Fr tube with several side holes was passed through the stenosis of the hepaticojejunostomy. A 10-Fr BLAKE Silicone Drain is flexible, which precludes onestep insertion. One week after insertion of the 11-Fr tube, a 0.035-inch guidewire was inserted into the tube. After removal of the 11-Fr tube, the guidewire was put into the channel of a 10-Fr BLAKE Silicone Drain. The drain was inserted into the jejunal limb through the intrahepatic bile duct and was connected to a J-VAC Suction Reservoir. Low-pressure continued suction was applied. Patients can be discharged after insertion of the 10-Fr BLAKE Silicone Drain connected to the J-VAC Suction Reservoir. Placement of a percutaneous transhepatic biliary stent using a 10-Fr BLAKE Silicone Drain connected to a J-VAC Suction Reservoir is useful for the treatment of stenotic hepaticojejunostomy.

  4. Percutaneous gastrostomy performed by radiologists using balloon replacement tubes. A simple interventional technique for the placement of nutritional catheters without endoscopy or surgery; Perkutane Gastrostomie mit Ballon-PEG-Ersatzsonden durch den Radiologen. Eine interventionelle Technik zur einfachen Einlage von Ernaehrungskathetern ohne chirurgischen oder endoskopischen Eingriff

    Energy Technology Data Exchange (ETDEWEB)

    Dinkel, H.P.; Triller, J. [Bern Univ. (Switzerland). Inst. fuer Diagnostische Radiologie

    2001-06-01

    Patients afflicted with stenotic head and neck or esophageal tumors often require artificial enteral feeding. Frequently passage of an endoscope through the esophagus is impossible in these patients. Interventional, fluoroscopically assisted, percutaneous gastrostomy (PG) by balloon replacement tubes is a feasible and successful alternative to percutaneous endoscopic gastrostomy (PEG) and the method of choice in patients where the esophagus cannot be passed with an endoscope anymore. Technical success rate is very high and serious complications are rare. Radiological PG is a feasible, equivalent alternative to PEG also in all other patients. We recommend PG with balloon gastrostomy tubes in conjunction with gastropexy performed with three to four T-fasteners, which are left in place for seven days in order to prevent dislocation and leakage. (orig.) [German] Patienten mit HNO-Tumoren oder malignen Oesophagusstenosen muessen oft mit einem gastroenteralen Stoma versorgt werden. Haeufig sind die Tumoren so stenosierend, dass eine perkutane endoskopische Gastrostomie (PEG) nicht mehr moeglich ist und eine chirurgische Gastrostomie durchgefuehrt wird. Wir berichten ueber die radiologisch-perkutane Gastrostomie (PG). Die perkutane Gastrostomie ist Methode der Wahl bei stark stenosierenden oesophagealen Prozessen. Auch bei anderen Patienten (ohne Passagehindernis) stellt die PG eine gleichwertige Alternative zur PEG dar. Die Erfolgsrate der PG liegt nahe 100%, Komplikationen sind selten. Wir empfehlen Ballon-arretierte Sonden (sog. Ballonersatzsonden) in Verbindung mit der perkutanen Gastropexie mit 3-4 Fadenzugankern, die fuer etwa 7 Tage belassen werden. (orig.)

  5. Student life - Tips for placement success.

    Science.gov (United States)

    2016-03-01

    Placements are an inevitable part of a nursing degree which provide a platform for on-the-job learning and development, greatly enhancing a student nurse's understanding of their career choice. PMID:26932655

  6. Educational Placement of Children with Spina Bifida.

    Science.gov (United States)

    Lauder, Calvin E.; And Others

    1979-01-01

    Procedures of school placement for 38 children (ages 5 to 18 years) with spina bifida in 23 school districts in western New York State were studied 5 years after a mandated process was enacted. (Author)

  7. Standard—Cell Placement from Functional Descriptions

    Institute of Scientific and Technical Information of China (English)

    KlausBuchenrieder

    1991-01-01

    This paper presents a functional language for the unambiguous description of digital circuits,a method and algorithms to obtain a standard-cell layout,and a comparative evaluation of the developed functional standard-cell placement technique.The presented placement scheme is different from traditional methods because the complete layout grometry is specified and constructed automatically from a functional description.The construction relies on a translation that combines the simplicity of standard-cells with the elegance of functional programming.An evaluation of the method introduced shows that the quality of the resulting placement is close to the results achieved with simulated annealing while the computation time is significantly less.Furthermore,the evaluation suggests to employ the functional placement method in conjunction with low-temperature simulated annealing for running-time reduction and improvedresults.

  8. Selective Placement Program Coordinator (SPPC) Directory

    Data.gov (United States)

    Office of Personnel Management — List of the Selective Placement Program Coordinators (SPPC) in Federal agencies, updated as needed. Users can filter the list by choosing a state and/or agency name.

  9. Placement suitability criteria of composite tape for mould surface in automated tape placement

    OpenAIRE

    Zhang Peng; Sun Ronglei; Zhao Xueying; Hu Lingjin

    2015-01-01

    Automated tape placement is an important automated process used for fabrication of large composite structures in aeronautical industry. The carbon fiber composite parts realized with this process tend to replace the aluminum parts produced by high-speed machining. It is difficult to determine the appropriate width of the composite tape in automated tape placement. Wrinkling will appear in the tape if it does not suit for the mould surface. Thus, this paper deals with establishing placement su...

  10. Beacon Node Placement for Minimal Localization Error

    OpenAIRE

    Yuan, Zimu; Li, Wei; Xu, Zhiwei; Zhao, Wei

    2015-01-01

    Beacon node placement, node-to-node measurement, and target node positioning are the three key steps for a localization process. However, compared with the other two steps, beacon node placement still lacks a comprehensive, systematic study in research literatures. To fill this gap, we address the Beacon Node Placment (BNP) problem that deploys beacon nodes for minimal localization error in this paper. BNP is difficult in that the localization error is determined by a complicated combination ...

  11. Tow placement studies for liquid composite moulding

    OpenAIRE

    Turner, Matthew Richard

    1998-01-01

    This thesis describes the work undertaken developing techniques for the design and manufacture of continuous fibre preforms for liquid composite moulding. A prototype tow placement facility based on the roller placement of up to 5 tows onto a flat bed was developed. This was used to prepare preforms for 4 industrially based demonstrator components which were subsequently successfully moulded. In tests vibrational performance of parts so manufactured showed slight improvements in mechanical pe...

  12. Feasible Workspace for Robotic Fiber Placement

    OpenAIRE

    Moutran, Serge Riad

    2002-01-01

    Online consolidation fiber placement is emerging as an automated manufacturing process for the fabrication of large composite material complex structures. While traditional composite manufacturing techniques limited the productsâ size, geometrical shapes and laminate patterns, robotic automation of the fiber placement process allows the manufacture of complex bodies with any desired surface pattern or towpregâ s direction. Therefore, a complete understanding of the robot kinematic capabili...

  13. Experiences of Supervision at Practice Placement Sites

    OpenAIRE

    Lesley Diack; Kathrine Gibson; Kim Munro; Alison Strath

    2014-01-01

    Background. Whilst placement supervision and clinical education programmes are of significant value in shaping the behaviours of undergraduate healthcare students, appropriate provisions which are efficacious to the learner are somewhat lacking, particularly for students studying on UK MPharm programmes. Objectives. To explore and explain the value of placement supervision to the personal development and employability of undergraduate pharmacy students. Methods. Students participated in a wee...

  14. Neural Tube Defects

    Science.gov (United States)

    Neural tube defects are birth defects of the brain, spine, or spinal cord. They happen in the first month ... that she is pregnant. The two most common neural tube defects are spina bifida and anencephaly. In spina bifida, ...

  15. Tracheostomy tube - speaking

    Science.gov (United States)

    ... this page: //medlineplus.gov/ency/patientinstructions/000465.htm Tracheostomy tube - speaking To use the sharing features on ... are even speaking devices that can help you. Tracheostomy Tubes and Speaking Air passing through vocal cords ( ...

  16. Exploring continuous clinical placement for undergraduate students.

    Science.gov (United States)

    McKenna, Lisa G; Wray, Natalie; McCall, Louise

    2009-08-01

    Clinical placements are integral to health professional preparatory courses. These placements allow for the application of classroom-based learning into real patient care situations. In doing so, they provide opportunities for applying theoretical knowledge into practice contexts, skills development and socialisation into the chosen profession. However, despite its recognised importance across health professions, little has been written about optimal structures for supporting clinical learning. This paper presents one group of findings from a larger qualitative study aimed at exploring health professional student's clinical experiences and their impact on career intentions. Findings reported here present a group of undergraduate midwifery student's perspectives on a "home" hospital clinical placement model where continuous clinical placements were taken in the same agency (or hospital group) for 2 days per week over the final 2 years of their course. Two main themes emerged from the data analysis, these being, 'familiarity' and 'continuity'. It is concluded that continuous placements in the same clinical setting have the potential to offer greater opportunities for learning and early professional socialisation than traditional block (Monday to Friday) placements. They can offer a more integrated approach to classroom theory and its application into practice. PMID:18427942

  17. Optimal DG placement in deregulated electricity market

    International Nuclear Information System (INIS)

    This paper presents two new methodologies for optimal placement of distributed generation (DG) in an optimal power flow (OPF) based wholesale electricity market. DG is assumed to participate in real time wholesale electricity market. The problem of optimal placement, including size, is formulated for two different objectives, namely, social welfare maximization and profit maximization. The candidate locations for DG placement are identified on the basis of locational marginal price (LMP). Obtained as lagrangian multiplier associated with active power flow equation for each node, LMP gives the short run marginal cost (SRMC) of electricity. Consumer payment, evaluated as a product of LMP and load at each load bus, is proposed as another ranking to identify candidate nodes for DG placement. The proposed rankings bridges engineering aspects of system operation and economic aspects of market operation and act as good indicators for the placement of DG, especially in a market environment. In order to provide a scenario of variety of DGs available in the market, several cost characteristics are assumed. For each DG cost characteristic, an optimal placement and size is identified for each of the objectives. The proposed methodology is tested in a modified IEEE 14 bus test system. (author)

  18. Optimal DG placement in deregulated electricity market

    Energy Technology Data Exchange (ETDEWEB)

    Gautam, Durga; Mithulananthan, Nadarajah [Electric Power System Management, Energy Field of Study, Asian Institute of Technology, P.O. Box 4, Klong Luang, Pathumthani 12120 (Thailand)

    2007-10-15

    This paper presents two new methodologies for optimal placement of distributed generation (DG) in an optimal power flow (OPF) based wholesale electricity market. DG is assumed to participate in real time wholesale electricity market. The problem of optimal placement, including size, is formulated for two different objectives, namely, social welfare maximization and profit maximization. The candidate locations for DG placement are identified on the basis of locational marginal price (LMP). Obtained as lagrangian multiplier associated with active power flow equation for each node, LMP gives the short run marginal cost (SRMC) of electricity. Consumer payment, evaluated as a product of LMP and load at each load bus, is proposed as another ranking to identify candidate nodes for DG placement. The proposed rankings bridges engineering aspects of system operation and economic aspects of market operation and act as good indicators for the placement of DG, especially in a market environment. In order to provide a scenario of variety of DGs available in the market, several cost characteristics are assumed. For each DG cost characteristic, an optimal placement and size is identified for each of the objectives. The proposed methodology is tested in a modified IEEE 14 bus test system. (author)

  19. Gastrostomy feeding tube - bolus

    Science.gov (United States)

    ... a gastrostomy tube. Delmar’s Fundamental and Advanced Nursing Skills . 2nd Ed. Albany, NY: Delmar Thomson Learning; 2003: 742-749. Simmons, Remmington R.The percutaneous endoscopic gastrostomy tube: a nurse's guide to PEG tubes. Medsurg Nurs . 2013 Mar- ...

  20. KER-2 tube history

    Energy Technology Data Exchange (ETDEWEB)

    Banister, W.C.

    1963-08-16

    Zirconium process tube No. 1986 was installed in KE Reactor tube channel No. 2864 on April 16, 1959. This report describes the history and the conditions to which it was exposed during its residence in the reactor. The tube was removed on May 31, 1963.

  1. 21 CFR 868.5800 - Tracheostomy tube and tube cuff.

    Science.gov (United States)

    2010-04-01

    ... 21 Food and Drugs 8 2010-04-01 2010-04-01 false Tracheostomy tube and tube cuff. 868.5800 Section... (CONTINUED) MEDICAL DEVICES ANESTHESIOLOGY DEVICES Therapeutic Devices § 868.5800 Tracheostomy tube and tube cuff. (a) Identification. A tracheostomy tube and tube cuff is a device intended to be placed into...

  2. Heat exchanger tube tool

    International Nuclear Information System (INIS)

    Certain types of heat-exchangers have tubes opening through a tube sheet to a manifold having an access opening offset from alignment with the tube ends. A tool for inserting a device, such as for inspection or repair, is provided for use in such instances. The tool is formed by a flexible guide tube insertable through the access opening and having an inner end provided with a connector for connection with the opening of the tube in which the device is to be inserted, and an outer end which remains outside of the chamber, the guide tube having adequate length for this arrangement. A flexible transport hose for internally transporting the device slides inside of the guide tube. This hose is long enough to slide through the guide tube, into the heat-exchanger tube, and through the latter to the extent required for the use of the device. The guide tube must be bent to reach the end of the heat-exchanger tube and the latter may be constructed with a bend, the hose carrying anit-friction elements at interspaced locations along its length to make it possible for the hose to negotiate such bends while sliding to the location where the use of the device is required

  3. NEI You Tube Videos: Amblyopia

    Medline Plus

    Full Text Available ... NEI YouTube Videos > NEI YouTube Videos: Amblyopia NEI YouTube Videos YouTube Videos Home Age-Related Macular Degeneration ... Retinopathy of Prematurity Science Spanish Videos Webinars NEI YouTube Videos: Amblyopia NEI on Twitter NEI on YouTube ...

  4. NEI You Tube Videos: Amblyopia

    Medline Plus

    Full Text Available ... YouTube Videos > NEI YouTube Videos: Amblyopia NEI YouTube Videos YouTube Videos Home Age-Related Macular Degeneration Amblyopia ... of Prematurity Science Spanish Videos Webinars NEI YouTube Videos: Amblyopia NEI on Twitter NEI on YouTube NEI ...

  5. Stereotactic catheter placement for Ommaya reservoirs.

    Science.gov (United States)

    Kennedy, Benjamin C; Brown, Lauren T; Komotar, Ricardo J; McKhann, Guy M

    2016-05-01

    Ommaya reservoirs are an important surgical therapy for the chronic intrathecal administration of chemotherapy for patients with leptomeningeal carcinomatosis. Surgical accuracy is paramount in these patients with typically normal sized ventricles, and may be improved with stereotactic guidance. This paper aimed to review a large series of stereotactic Ommaya catheter placements, examining accuracy and complications. We conducted a retrospective review of 109 consecutive adult patients who underwent stereotactic Ommaya catheter placement for leptomeningeal carcinomatosis or central nervous system lymphoma at Columbia University Medical Center, USA, from 1998-2013. The rate of accurate placement in the ventricular system was 99%, with the only poor catheter position due to post-placement migration. The rate of peri-operative complications was 6.4%. Hemorrhagic complications occurred in patients with thrombocytopenia or therapeutic anti-coagulation pre-operatively or during the post-operative period. Use of stereotaxy for catheter placement of Ommaya reservoirs is safe and effective, and should be considered when placing a catheter into non-hydrocephalic ventricles. PMID:26778516

  6. Preparing health students for interprofessional placements.

    Science.gov (United States)

    Grace, Sandra; McLeod, Gopi; Streckfuss, Julie; Ingram, Lissa; Morgan, Annette

    2016-03-01

    Clinical education increasingly includes opportunities for interprofessional (IP) placements but few opportunities for students and supervisors to adequately prepare for such placements. The aim of this project was to further develop and evaluate an online multidisciplinary resource that was originally designed to prepare students for single-discipline placements. The revised resource aimed to prepare health students and their supervisors for IP placements. The resource was trialled in host organisations with participants from naturopathy, nursing, osteopathy and pharmacy. The resource used language that was common to all participants and comprised activities that had broad relevance such as orientating students to specific placements, developing learning plans, clarifying roles, rights and responsibilities, and clinical scenarios that raised ethical and professional issues. The effectiveness of the resource as an IP learning tool was evaluated using an E-survey, focus groups and feedback from the project team. According to participants, the resource afforded insights into what other disciplines do and opportunities for cross-disciplinary interactions, which helped break down stereotypes and misconceptions. Cross-disciplinary commonalities such as those pertaining to patient care, communication and ethics became evident. Collaborative projects involving academics, clinical supervisors and students from multiple disciplines provided an opportunity for culture change in an education organisation from single discipline to a more collaborative interdisciplinary one. PMID:27038083

  7. Advanced tow placement of composite fuselage structure

    Science.gov (United States)

    Anderson, Robert L.; Grant, Carroll G.

    1992-01-01

    The Hercules NASA ACT program was established to demonstrate and validate the low cost potential of the automated tow placement process for fabrication of aircraft primary structures. The program is currently being conducted as a cooperative program in collaboration with the Boeing ATCAS Program. The Hercules advanced tow placement process has been in development since 1982 and was developed specifically for composite aircraft structures. The second generation machine, now in operation at Hercules, is a production-ready machine that uses a low cost prepreg tow material form to produce structures with laminate properties equivalent to prepreg tape layup. Current program activities are focused on demonstration of the automated tow placement process for fabrication of subsonic transport aircraft fuselage crown quadrants. We are working with Boeing Commercial Aircraft and Douglas Aircraft during this phase of the program. The Douglas demonstration panels has co-cured skin/stringers, and the Boeing demonstration panel is an intricately bonded part with co-cured skin/stringers and co-bonded frames. Other aircraft structures that were evaluated for the automated tow placement process include engine nacelle components, fuselage pressure bulkheads, and fuselage tail cones. Because of the cylindrical shape of these structures, multiple parts can be fabricated on one two placement tool, thus reducing the cost per pound of the finished part.

  8. Building lab-scale x-ray tube based irradiators

    Science.gov (United States)

    Haff, Ron; Jackson, Eric; Gomez, Joseph; Light, Doug; Follett, Peter; Simmons, Greg; Higbee, Brad

    2016-04-01

    Here we report the use of x-ray tube based irradiators as alternatives to gamma sources for laboratory scale irradiation. Irradiators were designed with sample placement in closest possible proximity to the source, allowing high dose rates for small samples. Designs using 1000 W x-ray tubes in single tube, double tube, and four tube configurations are described, as well as various cabinet construction techniques. Relatively high dose rates were achieved for small samples, demonstrating feasibility for laboratory based irradiators for research purposes. Dose rates of 9.76, 5.45, and 1.7 Gy/min/tube were measured at the center of a 12.7 cm container of instant rice at 100 keV, 70 keV, and 40 keV, respectively. Dose uniformity varies dramatically as the distance from source to container. For 2.54 cm diameter sample containers containing adult Navel Orangeworm, dose rates of 50-60 Gy/min were measured in the four tube system.

  9. Pediatric cuffed endotracheal tubes

    Directory of Open Access Journals (Sweden)

    Neerja Bhardwaj

    2013-01-01

    Full Text Available Endotracheal intubation in children is usually performed utilizing uncuffed endotracheal tubes for conduct of anesthesia as well as for prolonged ventilation in critical care units. However, uncuffed tubes may require multiple changes to avoid excessive air leak, with subsequent environmental pollution making the technique uneconomical. In addition, monitoring of ventilatory parameters, exhaled volumes, and end-expiratory gases may be unreliable. All these problems can be avoided by use of cuffed endotracheal tubes. Besides, cuffed endotracheal tubes may be of advantage in special situations like laparoscopic surgery and in surgical conditions at risk of aspiration. Magnetic resonance imaging (MRI scans in children have found the narrowest portion of larynx at rima glottides. Cuffed endotracheal tubes, therefore, will form a complete seal with low cuff pressure of <15 cm H 2 O without any increase in airway complications. Till recently, the use of cuffed endotracheal tubes was limited by variations in the tube design marketed by different manufacturers. The introduction of a new cuffed endotracheal tube in the market with improved tracheal sealing characteristics may encourage increased safe use of these tubes in clinical practice. A literature search using search words "cuffed endotracheal tube" and "children" from 1980 to January 2012 in PUBMED was conducted. Based on the search, the advantages and potential benefits of cuffed ETT are reviewed in this article.

  10. Atraumatic extraction, implant placement and immediate provisionalization.

    Science.gov (United States)

    Tavarez, Rudys Rodolfo de Jesus; Calixto, Amanda Martins; Maia Filho, Etevaldo Matos; Bandeca, Matheus Coelho; Firoozmand, Leily Macedo; Gomes, Mario Gilson Nina; Malheiros, Adriana Santos

    2014-01-01

    Front tooth extraction typically results in significant loss of hard and soft tissue volume, both in the vestibular-lingual and mesiodistal directions. As these changes can compromise the esthetic results of prosthetic rehabilitation, extraction techniques that cause minimal trauma to the remnant tissues are applied in combination with immediate implant placement to minimize such alterations. The case reported in the present article illustrates a therapeutic plan consisting of atraumatic extraction followed by immediate implant placement and provisionalization. When carefully indicated and planned, our results indicate that this technique may provide promising immediate results relative to the maintenance and stability of the peri-implanted tissues. PMID:25576122

  11. HARMONY SEARCH OPTIMIZATION FOR UPFC PLACEMENT

    Directory of Open Access Journals (Sweden)

    A. SAKTHIDASAN

    2014-11-01

    Full Text Available This article presents a harmony search optimization based method for optimal placement of UPFCs with a view of reducing the network loss. Harmony search optimization is inspired the musical process of searching for a perfect state of harmony. The harmony in music is analogous to the optimization solution vector, and the musician’s improvisations are analogous to local and global search schemes in optimization techniques. The method determines the optimal locations and the parameters of the UPFCs for placement. Test results on IEEE 30 bus system exhibits the superiority of the developed algorithm.

  12. Conduction cooled tube supports

    Science.gov (United States)

    Worley, Arthur C.; Becht, IV, Charles

    1984-01-01

    In boilers, process tubes are suspended by means of support studs that are in thermal contact with and attached to the metal roof casing of the boiler and the upper bend portions of the process tubes. The support studs are sufficiently short that when the boiler is in use, the support studs are cooled by conduction of heat to the process tubes and the roof casing thereby maintaining the temperature of the stud so that it does not exceed 1400.degree. F.

  13. Tubing weld cracking test

    International Nuclear Information System (INIS)

    A tubing weld cracking (TWC) test was developed for applications involving advanced austenitic alloys (such as modified 800H and 310HCbN). Compared to the Finger hot cracking test, the TWC test shows an enhanced ability to evaluate the crack sensitivity of tubing materials. The TWC test can evaluate the cracking tendency of base as well as filter materials. Thus, it is a useful tool for tubing suppliers, filler metal producers and fabricators

  14. Categorising YouTube

    OpenAIRE

    Thomas Mosebo Simonsen

    2011-01-01

    This article provides a genre analytical approach to creating a typology of the User Generated Content (UGC) of YouTube. The article investigates the construction of navigation processes on the YouTube website. It suggests a pragmatic genre approach that is expanded through a focus on YouTube’s technological affordances. Through an analysis of the different pragmatic contexts of YouTube, it is argued that a taxonomic understanding of YouTube must be analysed in regards to the vacillation of a...

  15. Calibrations of photomultiplier tubes

    International Nuclear Information System (INIS)

    The experimental methods for calibration photomultiplier tubes used in the multichannel fast-pulse-detection system of Thomson scattering measurements for nuclear fusion devices is reported. The most important parameters of the photomultiplier tubes to be calibrated include: linearity of output electric signals to input light signals, response time of pulsed light, spectral response, absolute responsibility, and sensitivity as a function of the chain voltage. The calibrations of all these parameters are carried out by using EMI 9558 B and RCA 7265 photomultiplier tubes respectively. The experimental methods presented in the paper are common to those quantitative measurements that require phomultiplier tubes as detectors

  16. Composite Pulse Tube

    Science.gov (United States)

    Martin, Jerry L.; Cloyd, Jason H.

    2007-01-01

    A modification of the design of the pulse tube in a pulse-tube cryocooler reduces axial thermal conductance while preserving radial thermal conductance. It is desirable to minimize axial thermal conductance in the pulse-tube wall to minimize leakage of heat between the warm and cold ends of the pulse tube. At the same time, it is desirable to maximize radial thermal conductance at the cold end of the pulse tube to ensure adequate thermal contact between (1) a heat exchanger in the form of a stack of copper screens inside the pulse tube at the cold end and (2) the remainder of the cold tip, which is the object to which the heat load is applied and from which heat must be removed. The modified design yields a low-heat-leak pulse tube that can be easily integrated with a cold tip. A typical pulse tube of prior design is either a thin-walled metal tube or a metal tube with a nonmetallic lining. It is desirable that the outer surface of a pulse tube be cylindrical (in contradistinction to tapered) to simplify the design of a regenerator that is also part of the cryocooler. Under some conditions, it is desirable to taper the inner surface of the pulse tube to reduce acoustic streaming. The combination of a cylindrical outer surface and a tapered inner surface can lead to unacceptably large axial conduction if the pulse tube is made entirely of metal. Making the pulse-tube wall of a nonmetallic, lowthermal- conductivity material would not solve the problem because the wall would not afford the needed thermal contact for the stack of screens in the cold end. The modified design calls for fabricating the pulse tube in two parts: a longer, nonmetallic part that is tapered on the inside and cylindrical on the outside and a shorter, metallic part that is cylindrical on both the inside and the outside. The nonmetallic part can be made from G-10 fiberglass-reinforced epoxy or other low-thermal-conductivity, cryogenically compatible material. The metallic part must have high

  17. Manual tube welding torch

    International Nuclear Information System (INIS)

    In a welding torch which fits over a tube intermediate the ends thereof for welding the juncture between the tube and a boss on the back side of a tube plate, a split housing encloses a tungsten electrode, a filler wire duct and a fiber optic bundle arranged to observe the welding process. A shielding gas duct is provided in the housing. A screw is provided for setting electrode/work distance. Difficult remote tube welding operations can be performed with the apparatus. (author)

  18. Steam generator tube performance

    International Nuclear Information System (INIS)

    A survey of steam generator operating experience for 1986 has been carried out for 184 pressurized water and pressurized heavy-water reactors, and 1 water-cooled, graphite-moderated reactor. Tubes were plugged at 75 of the reactors (40.5%). In 1986, 3737 tubes were plugged (0.14% of those in service) and 3148 tubes were repaired by sleeving. A small number of reactors accounted for the bulk of the plugged tubes, a phenomenon consistent with previous years. For 1986, the available tubesheet sludge data for 38 reactors has been compiled into tabular form, and sludge/deposit data will be incorporated into all future surveys

  19. Disc-retained tubes for radiologically inserted gastrostomy (RIG): Not up to the job?

    International Nuclear Information System (INIS)

    Aim: To assess the insertion procedure and performance of disc-retained gastrostomy tubes, recording complications and accidental displacements by prospective audit, and to determine whether primary placement of the tube off-licence was feasible. Materials and methods: Disc-retained 12 F single-lumen Monarch gastrostomy tubes (Enteral UK, Selby, UK) were inserted by three gastrointestinal interventional radiologists in a supra-regional cancer centre. The 12 F tubes required a 20 F peel-away sheath with four-point gastropexy fixation and were placed under conscious sedation, using electrocardiogram (EEG) bispectral index monitoring. Follow-up was performed in an in-house gastrostomy drop-in clinic at 1 week and 1 month, supplemented with weekly telephone follow-up. Patients also had open access to the gastrostomy drop-in clinic for immediate advice and complication management. Results: Eighteen patients underwent primary insertion of a Monarch gastrostomy tube over 5 months. A total of 6/18 (33%) tubes displaced; 4/18 (22%) completely, 2/18 (11%) occult into the peritoneum. Four of 18 (22%) patients developed infection at the stoma site. Due to the unexpectedly poor performance of the tube, the study was terminated early. Conclusion: Initial experience with the Monarch disc-retained gastrostomy tube demonstrates it unsuitable for primary placement with current protocols. In view of the potentially serious complications, the Medicines and Healthcare Products Regulatory Agency (MHRA) has been informed. A request has been made to the distributer to reassess the tube design and/or review the procedure promoted for primary placement

  20. Photomultiplier tubes in the MiniBooNE experiment

    Energy Technology Data Exchange (ETDEWEB)

    Brice, S.J. [Fermi National Accelerator Laboratory, Batavia IL 60510 (United States); Bugel, L. [Columbia University, Pupin Laboratories, 538 W. 120th St., New York NY 10027 (United States); Conrad, J.M. [Columbia University, Pupin Laboratories, 538 W. 120th St., New York NY 10027 (United States); Fleming, B. [Yale University, New Haven CT 06520 (United States); Gladstone, L. [Columbia University, Pupin Laboratories, 538 W. 120th St., New York NY 10027 (United States)]. E-mail: leg2102@columbia.edu; Hawker, E. [Western Illinois University, Currens Hall, Macomb IL 61455 (United States); Killewald, P. [University of Michigan, Department of Physics, Ann Arbor MI 48109 (United States); May, J. [Stanford Linear Accelerator Center, Menlo Park CA 94025 (United States); McKenney, S. [Los Alamos National Laboratory, Los Alamos NM 87545 (United States); Nienaber, P. [Saint Mary' s University of Minnesota, Winona MN 55987 (United States); Roe, B. [University of Michigan, Department of Physics, Ann Arbor MI 48109 (United States); Sandberg, V. [Los Alamos National Laboratory, Los Alamos NM 87545 (United States); Smith, D. [Embry-Riddle Aeronautical University, Prescott AZ 86301 (United States); Wysocki, M. [University of Michigan, Department of Physics, Ann Arbor MI 48109 (United States)

    2006-06-15

    The detector for the MiniBooNE [Proposal for the MiniBooNE experiment: ] experiment at the Fermi National Accelerator Laboratory employs 15208in. Hamamatsu models R1408 and R5912 photomultiplier tubes with custom-designed bases. Tests were performed to determine the dark rate, charge and timing resolutions, double-pulsing rate, and desired operating voltage for each tube, so that the tubes could be sorted for optimal placement in the detector. Seven phototubes were tested to find the angular dependence of their response. After the Super-K phototube implosion accident, an analysis was performed to determine the risk of a similar accident with MiniBooNE.

  1. Photomultiplier tubes in the MiniBooNE experiment

    Science.gov (United States)

    Brice, S. J.; Bugel, L.; Conrad, J. M.; Fleming, B.; Gladstone, L.; Hawker, E.; Killewald, P.; May, J.; McKenney, S.; Nienaber, P.; Roe, B.; Sandberg, V.; Smith, D.; Wysocki, M.

    2006-06-01

    The detector for the MiniBooNE [Proposal for the MiniBooNE experiment: ] experiment at the Fermi National Accelerator Laboratory employs 1520 8 in. Hamamatsu models R1408 and R5912 photomultiplier tubes with custom-designed bases. Tests were performed to determine the dark rate, charge and timing resolutions, double-pulsing rate, and desired operating voltage for each tube, so that the tubes could be sorted for optimal placement in the detector. Seven phototubes were tested to find the angular dependence of their response. After the Super-K phototube implosion accident, an analysis was performed to determine the risk of a similar accident with MiniBooNE.

  2. Steam generator tube failures

    Energy Technology Data Exchange (ETDEWEB)

    MacDonald, P.E.; Shah, V.N.; Ward, L.W.; Ellison, P.G.

    1996-04-01

    A review and summary of the available information on steam generator tubing failures and the impact of these failures on plant safety is presented. The following topics are covered: pressurized water reactor (PWR), Canadian deuterium uranium (CANDU) reactor, and Russian water moderated, water cooled energy reactor (VVER) steam generator degradation, PWR steam generator tube ruptures, the thermal-hydraulic response of a PWR plant with a faulted steam generator, the risk significance of steam generator tube rupture accidents, tubing inspection requirements and fitness-for-service criteria in various countries, and defect detection reliability and sizing accuracy. A significant number of steam generator tubes are defective and are removed from service or repaired each year. This wide spread damage has been caused by many diverse degradation mechanisms, some of which are difficult to detect and predict. In addition, spontaneous tube ruptures have occurred at the rate of about one every 2 years over the last 20 years, and incipient tube ruptures (tube failures usually identified with leak detection monitors just before rupture) have been occurring at the rate of about one per year. These ruptures have caused complex plant transients which have not always been easy for the reactor operators to control. Our analysis shows that if more than 15 tubes rupture during a main steam line break, the system response could lead to core melting. Although spontaneous and induced steam generator tube ruptures are small contributors to the total core damage frequency calculated in probabilistic risk assessments, they are risk significant because the radionuclides are likely to bypass the reactor containment building. The frequency of steam generator tube ruptures can be significantly reduced through appropriate and timely inspections and repairs or removal from service.

  3. Steam generator tube failures

    International Nuclear Information System (INIS)

    A review and summary of the available information on steam generator tubing failures and the impact of these failures on plant safety is presented. The following topics are covered: pressurized water reactor (PWR), Canadian deuterium uranium (CANDU) reactor, and Russian water moderated, water cooled energy reactor (VVER) steam generator degradation, PWR steam generator tube ruptures, the thermal-hydraulic response of a PWR plant with a faulted steam generator, the risk significance of steam generator tube rupture accidents, tubing inspection requirements and fitness-for-service criteria in various countries, and defect detection reliability and sizing accuracy. A significant number of steam generator tubes are defective and are removed from service or repaired each year. This wide spread damage has been caused by many diverse degradation mechanisms, some of which are difficult to detect and predict. In addition, spontaneous tube ruptures have occurred at the rate of about one every 2 years over the last 20 years, and incipient tube ruptures (tube failures usually identified with leak detection monitors just before rupture) have been occurring at the rate of about one per year. These ruptures have caused complex plant transients which have not always been easy for the reactor operators to control. Our analysis shows that if more than 15 tubes rupture during a main steam line break, the system response could lead to core melting. Although spontaneous and induced steam generator tube ruptures are small contributors to the total core damage frequency calculated in probabilistic risk assessments, they are risk significant because the radionuclides are likely to bypass the reactor containment building. The frequency of steam generator tube ruptures can be significantly reduced through appropriate and timely inspections and repairs or removal from service

  4. Population in Advanced Placement Human Geography.

    Science.gov (United States)

    Sharma, Martha B.

    2000-01-01

    Addresses the population section of the Advanced Placement course outline for human geography, focusing on four themes: (1) geographical analysis of population; (2) population distribution and composition; (3) population growth and decline over time and space; and (4) population movement. Identifies strategies for instructional activities.…

  5. Suboccipital neuropathy after bone conduction device placement

    NARCIS (Netherlands)

    Faber, H.T.; Ru, J.A. de

    2013-01-01

    OBJECTIVE: To describe the clinical characteristics of a 70-year-old female with occipital neuropathy following bone conduction device surgery. DESCRIPTION: A 65-year-old woman underwent bone conduction device placement surgery on the left temporal bone. Postoperatively she progressively developed c

  6. Photoelectron Spectroscopy in Advanced Placement Chemistry

    Science.gov (United States)

    Benigna, James

    2014-01-01

    Photoelectron spectroscopy (PES) is a new addition to the Advanced Placement (AP) Chemistry curriculum. This article explains the rationale for its inclusion, an overview of how the PES instrument records data, how the data can be analyzed, and how to include PES data in the course. Sample assessment items and analysis are included, as well as…

  7. 5 CFR 9901.516 - Internal placement.

    Science.gov (United States)

    2010-01-01

    ... PERSONNEL SYSTEM (NSPS) Staffing and Employment External Recruitment and Internal Placement § 9901.516... described in 5 CFR part 330, subpart E, are not applicable to NSPS positions. (d) Details. There is no time... below, in conjunction with the merit promotion requirements in 5 CFR 335.103(b) constitute the...

  8. Delayed bracket placement in orthodontic treatment

    Directory of Open Access Journals (Sweden)

    Chandra Wigati

    2008-12-01

    Full Text Available Background: Beside bracket position, the timing of bracket placement is one of the most essential in orthodontic treatment with fixed appliances. Even it seems simple the timing of bracket placement can be crucial and significantly influence the result of orthodontic treatment. However it is often found brackets are placed without complete understanding of its purpose and effects, which could be useless and even detrimental for the case. Purpose: The aim of this case report is to show that the timing of bracket placement could be different depending on the cases. Case: Five different cases are presented here with different timing of bracket placement. Case management: On these cases, brackets were placed on the upper arch first, on the lower arch first, or even only on some teeth first. Good and efficient orthodontic treatment results were achieved. Conclusion: For every orthodontic case, from the very beginning of treatment, bracket should be placed with the end result in mind. If brackets are correctly placed at a correct time, better treatment result could be achieved without unnecessary round tripping tooth movement.

  9. Pyrotechnic Tubing Connector

    Science.gov (United States)

    Graves, Thomas J.; Yang, Robert A.

    1988-01-01

    Tool forms mechanical seal at joint without levers or hydraulic apparatus. Proposed tool intended for use in outer space used on Earth by heavily garbed workers to join tubing in difficult environments. Called Pyrotool, used with Lokring (or equivalent) fittings. Piston slides in cylinder when pushed by gas from detonating pyrotechnic charge. Impulse of piston compresses fittings, sealing around butting ends of tubes.

  10. Welding Tubes In Place

    Science.gov (United States)

    Meredith, R.

    1984-01-01

    Special welding equipment joins metal tubes that carry pressurized cyrogenic fluids. Equipment small enough to be used in confined spaces in which such tubes often mounted. Welded joints lighter in weight and more leak-proof than joints made with mechanical fittings.

  11. Risks of Using Bedside Tests to Verify Nasogastric Tube Position in Adult Patients

    Directory of Open Access Journals (Sweden)

    Melody Ni

    2014-12-01

    Full Text Available Nasogastric (NG tubes are commonly used for enteral feeding. Complications of feeding tube misplacement include malnutrition, pulmonary aspiration, and even death. We built a Bayesian network (BN to analyse the risks associated with available bedside tests to verify tube position. Evidence on test validity (sensitivity and specificity was retrieved from a systematic review. Likelihood ratios were used to select the best tests for detecting tubes misplaced in the lung or oesophagus. Five bedside tests were analysed including magnetic guidance, aspirate pH, auscultation, aspirate appearance, and capnography/colourimetry. Among these, auscultation and appearance are non-diagnostic towards lung or oesophagus placements. Capnography/ colourimetry can confirm but cannot rule out lung placement. Magnetic guidance can rule out both lung and oesophageal placement. However, as a relatively new technology, further validation studies are needed. The pH test with a cut-off at 5.5 or lower can rule out lung intubation. Lowering the cut-off to 4 not only minimises oesophageal intubation but also provides extra safety as the sensitivity of pH measurement is reduced by feeding, antacid medication, or the use of less accurate pH paper. BN is an effective tool for representing and analysing multi-layered uncertainties in test validity and reliability for the verification of NG tube position. Aspirate pH with a cut-off of 4 is the safest bedside method to minimise lung and oesophageal misplacement.

  12. Fluoroscopic insertion of post-pyloric feeding tubes: success rates and complications

    Energy Technology Data Exchange (ETDEWEB)

    Thurley, P.D.; Hopper, M.A. [Department of Clinical Radiology, Nottingham University Hospitals NHS Trust, Nottingham (United Kingdom); Jobling, J.C. [Department of Clinical Radiology, Nottingham University Hospitals NHS Trust, Nottingham (United Kingdom)], E-mail: craig.jobling@nuh.nhs.uk; Teahon, K. [Department of Clinical Radiology, Nottingham University Hospitals NHS Trust, Nottingham (United Kingdom)

    2008-05-15

    Aim: To examine the success and complication rates of radiological placement of post-pyloric feeding tubes, including those inserted with the assistance of a guide-wire. Materials and Methods: Two hundred referrals (156 patients), between the dates of 5 April 2002 and 10 September 2004, were identified retrospectively from computerized records. Subsequently, the radiology reports and patients' notes were reviewed to evaluate the indications for post-pyloric feeding, success of placement, use of a guide-wire, and any complications. Results: A post-pyloric tube was placed in the distal duodenum/jejunum in 183 (91.5%) patients and in the proximal duodenum or distal stomach in six (3%). A tube could not be inserted in 11 (5.5%) patients, and 51 (25.5%) of the insertions required the use of a guide-wire. Immediate complications were recorded in seven patients (3.5%): vomiting (n = 5); hypotension and apnoea requiring naloxone (n = 1) and hypoxia requiring endotracheal intubation (n = 1). Conclusion: Radiological placement of post-pyloric feeding tubes has a success rate comparable with endoscopically placed tubes, and it rarely involves significant technique-related complications.

  13. Fluoroscopic insertion of post-pyloric feeding tubes: success rates and complications

    International Nuclear Information System (INIS)

    Aim: To examine the success and complication rates of radiological placement of post-pyloric feeding tubes, including those inserted with the assistance of a guide-wire. Materials and Methods: Two hundred referrals (156 patients), between the dates of 5 April 2002 and 10 September 2004, were identified retrospectively from computerized records. Subsequently, the radiology reports and patients' notes were reviewed to evaluate the indications for post-pyloric feeding, success of placement, use of a guide-wire, and any complications. Results: A post-pyloric tube was placed in the distal duodenum/jejunum in 183 (91.5%) patients and in the proximal duodenum or distal stomach in six (3%). A tube could not be inserted in 11 (5.5%) patients, and 51 (25.5%) of the insertions required the use of a guide-wire. Immediate complications were recorded in seven patients (3.5%): vomiting (n = 5); hypotension and apnoea requiring naloxone (n = 1) and hypoxia requiring endotracheal intubation (n = 1). Conclusion: Radiological placement of post-pyloric feeding tubes has a success rate comparable with endoscopically placed tubes, and it rarely involves significant technique-related complications

  14. Product placement ve filmech o Jamesi Bondovi

    OpenAIRE

    Habětín, Matěj

    2012-01-01

    The topic of this bachelor thesis is product placement in James Bond movies. My goal was to explore the issue of product placement on cases of selected movies and its impact on the audience (especially on the Czech audience). I divided my bachelor thesis into six chapters. The first three are mostly theoretical. Here I focus mainly on marketing communications mix and its forms, then on product placement in movies in general. In the remaining three chapters, I occupied with product placement e...

  15. Categorising YouTube

    DEFF Research Database (Denmark)

    Simonsen, Thomas Mosebo

    2011-01-01

    This article provides a genre analytical approach to creating a typology of the User Generated Content (UGC) of YouTube. The article investigates the construction of navigation processes on the YouTube website. It suggests a pragmatic genre approach that is expanded through a focus on YouTube’s...... technological affordances. Through an analysis of the different pragmatic contexts of YouTube, it is argued that a taxonomic understanding of YouTube must be analysed in regards to the vacillation of a user-driven bottom-up folksonomy and a hierarchical browsing system that emphasises a culture of competition...... and which favours the already popular content of YouTube. With this taxonomic approach, the UGC videos are registered and analysed in terms of empirically based observations. The article identifies various UGC categories and their principal characteristics. Furthermore, general tendencies of the UGC...

  16. BRAND PLACEMENT AND CONSUMER CHOICE: AN IN-STORE EXPERIMENT

    OpenAIRE

    Sigurdsson, Valdimar; Saevarsson, Hugi; Foxall, Gordon

    2009-01-01

    An in-store experiment was performed to investigate the effects of shelf placement (high, middle, low) on consumers' purchases of potato chips. Placement of potato chips on the middle shelf was associated with the highest percentage of purchases. The results confirm the importance of item placement as a factor in consumers' buying behavior.

  17. Determining the brand awareness of product placement in video games

    OpenAIRE

    Král, Marek

    2015-01-01

    This bachelor thesis focusses on the determination of the brand awareness of product placement in video games. The theoretical part includes information about marketing, product placement and video games. The practical part consists of evaluation of the market research about product placements in video games. Conclusion suggests the most important factors influencing the level brand awareness.

  18. Dit programma bevat product placement: Effecten van sponsorvermeldingen in televisieprogramma's

    NARCIS (Netherlands)

    S.C. Boerman; E.A. van Reijmersdal; P.C. Neijens

    2015-01-01

    Europese richtlijnen vereisen dat brand placement in televisieprogramma’s wordt kenbaar gemaakt door een tekst zoals "Dit programma bevat product placement" of door een PP (product placement) logo. Deze sponsorvermeldingen hebben als doel de televisiekijker te informeren over merken of producten die

  19. Laparotomy enables retrograde dilatation and stent placement for malignant esophago-respiratory fistula

    Directory of Open Access Journals (Sweden)

    Iskender Özcan

    2008-01-01

    Full Text Available Abstract Background Malignant esophageal stenosis with complete obstruction and esophagorespiratory fistula (ERF is difficult to treat with standard endoscopic techniques. Case presentation We report a patient in whom with local recurrence of esophageal carcinoma an esophagotracheal fistula occurred. Initially the patient had undergone esophageal resection with interposition of a gastric tube. Due to complete obstruction of the lumen by recurrent tumor conventional transoral stent placement failed. For retrograde dilatation a laparotomy was performed. Via a duodenal incision endoscopic access to the gastric tube was achieved. Using a guidewire the esophageal obstruction was traversed and dilated. Then it was possible to place an esophageal stent via an antegrade approach. Conclusion Open surgery enables a safe access for retrograde endoscopic therapy in patients who had undergone esophageal resection with gastric interposition.

  20. Pressure tube type reactor

    International Nuclear Information System (INIS)

    Heretofore, a pressure tube type reactor has a problem in that the evaluation for the reactor core performance is complicate and no sufficient consideration is made for the economical property, to increase the size of a calandria tank and make the cost expensive. Then, in the present invention, the inner diameter of a pressure tube is set to greater than 50% of the lattice gap in a square lattice like arrangement, and the difference between the inner and the outer diameters of the calandria tube is set smaller than 20% of the lattice gap. Further, the inner diameter of the pressure tube is set to greater than 40% and the difference between the inner and the outer diameters of the calandria tube is set smaller than 30% of the lattice gap in a triangle lattice arrangement. Then, heavy water-to-fuel volume ratio can be determined appropriately and the value for the coolant void coefficient is made more negative side, to improve the self controllability inherent to the reactor. In particular, when 72 to 90 fuel rods are arranged per one pressure tube, the power density per one fuel rod is can be increased by about twice. Accordingly, the number of the pressure tubes can be reduced about to one-half, thereby enabling to remarkably decrease the diameter of the reactor core and to reduce the size of the calandria, which is economical. (N.H.)

  1. Use of Gastrostomy Tube to Prevent Maternal PKU Syndrome.

    Science.gov (United States)

    Schwoerer, Jessica A Scott; Obernolte, Lisa; Van Calcar, Sandra; Heighway, Susan; Bankowski, Heather; Williams, Phillip; Rice, Gregory

    2012-01-01

    Maternal Phenylketonuria Syndrome (MPKU) can occur in infants born to mothers with PKU with poor metabolic control during pregnancy. Elevated phenylalanine (phe) acts as a teratogen to the developing fetus with consequences including intellectual disability, microcephaly, facial dysmorphism, growth retardation, and congenital heart disease. MPKU can be prevented if metabolic control is achieved by 8-10 weeks gestation. If control is not achieved, there is a significant risk for MPKU. Therefore, in women with poor metabolic control at time of pregnancy, establishing metabolic control quickly is important.Clinically, establishing metabolic control in women with PKU can present challenges. Social issues, psychological issues, and insufficient education about PKU play an important role in a patient's inability to reinstitute this challenging diet. Maintaining phe levels within a range to allow for infant growth, while preventing toxicity, is challenging, particularly for those women who no longer follow the PKU diet. Gastrostomy tube placement is an option to deliver medical formula to women who are unable to restart diet due to severe nausea or palatability issues.Here we discuss two pregnancies in which a gastrostomy tube was placed to achieve metabolic control after other measures failed to reduce phe concentrations into the recommended range. For these two pregnancies, placement of the gastrostomy tube led to improvement in phe levels with normal infant outcomes including normal growth, head circumference, and heart structure. PMID:23430933

  2. Stent graft placement for dysfunctional arteriovenous grafts

    International Nuclear Information System (INIS)

    This study aimed to evaluate the usefulness and outcomes of stent graft use in dysfunctional arteriovenous grafts. Eleven patients who underwent stent graft placement for a dysfunctional hemodialysis graft were included in this retrospective study. Expanded polytetrafluoroethylene covered stent grafts were placed at the venous anastomosis site in case of pseudoaneurysm, venous laceration, elastic recoil or residual restenosis despite the repeated angioplasty. The patency of the arteriovenous graft was evaluated using Kaplan-Meier analysis. Primary and secondary mean patency was 363 days and 741 days. Primary patency at 3, 6, and 12 months was 82%, 73%, and 32%, respectively. Secondary patency at the 3, 6, 12, 24, and 36 months was improved to 91%, 82%, 82%, 50%, and 25%, respectively. Fractures of the stent graft were observed in 2 patients, but had no effect on the patency. Stent graft placement in dysfunctional arteriovenous graft is useful and effective in prolonging graft patency

  3. Customized ATP towpreg. [Automated Tow Placement

    Science.gov (United States)

    Sandusky, Donald A.; Marchello, Joseph M.; Baucom, Robert M.; Johnston, Norman J.

    1992-01-01

    Automated tow placement (ATP) utilizes robotic technology to lay down adjacent polymer-matrix-impregnated carbon fiber tows on a tool surface. Consolidation and cure during ATP requires that void elimination and polymer matrix adhesion be accomplished in the short period of heating and pressure rolling that follows towpreg ribbon placement from the robot head to the tool. This study examined the key towpreg ribbon properties and dimensions which play a significant role in ATP. Analysis of the heat transfer process window indicates that adequate heating can be achieved at lay down rates as high as 1 m/sec. While heat transfer did not appear to be the limiting factor, resin flow and fiber movement into tow lap gaps could be. Accordingly, consideration was given to towpreg ribbon having uniform yet non-rectangular cross sections. Dimensional integrity of the towpreg ribbon combined with customized ribbon architecture offer great promise for processing advances in ATP of high performance composites.

  4. Stent graft placement for dysfunctional arteriovenous grafts

    Energy Technology Data Exchange (ETDEWEB)

    Jeon, Gyeong Sik [Dept. of Radiology, CHA Bundang Medical Center, College of Medicine, CHA University, Seongnam (Korea, Republic of); Shin, Byung Seok; Ohm, Joon Young; Ahn, Moon Sang [Chungnam National University Hospital, Daejeon (Korea, Republic of)

    2015-07-15

    This study aimed to evaluate the usefulness and outcomes of stent graft use in dysfunctional arteriovenous grafts. Eleven patients who underwent stent graft placement for a dysfunctional hemodialysis graft were included in this retrospective study. Expanded polytetrafluoroethylene covered stent grafts were placed at the venous anastomosis site in case of pseudoaneurysm, venous laceration, elastic recoil or residual restenosis despite the repeated angioplasty. The patency of the arteriovenous graft was evaluated using Kaplan-Meier analysis. Primary and secondary mean patency was 363 days and 741 days. Primary patency at 3, 6, and 12 months was 82%, 73%, and 32%, respectively. Secondary patency at the 3, 6, 12, 24, and 36 months was improved to 91%, 82%, 82%, 50%, and 25%, respectively. Fractures of the stent graft were observed in 2 patients, but had no effect on the patency. Stent graft placement in dysfunctional arteriovenous graft is useful and effective in prolonging graft patency.

  5. HARMONY SEARCH OPTIMIZATION FOR UPFC PLACEMENT

    OpenAIRE

    A. SAKTHIDASAN; S. GEETHANJALI

    2014-01-01

    This article presents a harmony search optimization based method for optimal placement of UPFCs with a view of reducing the network loss. Harmony search optimization is inspired the musical process of searching for a perfect state of harmony. The harmony in music is analogous to the optimization solution vector, and the musician’s improvisations are analogous to local and global search schemes in optimization techniques. The method determines the optimal locations and the parameters of the UP...

  6. Product Placement: Systematisierung, Potenziale und Ausblick

    OpenAIRE

    Morlock, Felix; Schäffler, Robert; Schaffer, Philipp; Rennhak, Carsten

    2006-01-01

    Um zu gewährleisten, dass Zielgruppen weiterhin effektiv und effizient mit Werbung angesprochen werden können, muss ein Weg gefunden werden, der über die traditionellen Werbemethoden hinausgeht: die Werbeindustrie muss ihre Produkte in anderer Form unaufdringlich, aber dennoch effizient bewerben. Als neue Kommunikationsform wird deshalb neben dem Sponsoring verstärkt Product Placement eingesetzt. Die geringe Zahl an wissenschaftlichen Studien zur internationalen Verbreitung des Product Placem...

  7. Efficient iterative adaptive pole placement algorithm

    Institute of Scientific and Technical Information of China (English)

    李俊民; 李靖; 杨磊

    2004-01-01

    An iterative adaptive pole placement algorithm is presented. The stability and the convergence of the algorithm are respectively established. Since one-step iterative formulation in computing controller's parameters is used, the on-line computation cost is greatly reduced with respected to the traditional algorithm. The algorithm with the feed-forward can follow arbitrarily bounded output. The algorithm is also extended to multivariate case. Simulation examples show the efficiency and robustness of the algorithm.

  8. A QA/QC system to monitor the planarity of the tube layers in MDT chambers construction

    CERN Document Server

    Ciapetti, G; Giacalone, R; Montani, L; Pinci, D

    1998-01-01

    In this note a commercial laser system for the monitoring of the correct placement of the MDT drift tube end-plugs on the assembly combs is described. The results of various tests are presented; the sensitivity of the system is well matched to the required mechanical accuracy in the MDT chambers construction. We propose this method for QA/QC during tube layers assembly.

  9. Magnetic flux tube tunneling

    International Nuclear Information System (INIS)

    We present numerical simulations of the collision and subsequent interaction of orthogonal magnetic flux tubes. The simulations were carried out using a parallelized spectral algorithm for compressible magnetohydrodynamics. It is found that, under a wide range of conditions, the flux tubes can open-quotes tunnelclose quotes through each other, a behavior not previously seen in studies of either vortex tube or magnetic flux tube interactions. Two conditions must be satisfied for tunneling to occur: the magnetic field must be highly twisted with a field line pitch >1, and the Lundquist number must be somewhat large, ≥2880. An examination of magnetic field lines suggests that tunneling is due to a double-reconnection mechanism. Initially orthogonal field lines reconnect at two specific locations, exchange interacting sections, and open-quotes passclose quotes through each other. The implications of these results for solar and space plasmas are discussed. copyright 1997 The American Physical Society

  10. Integrated structure vacuum tube

    Science.gov (United States)

    Dimeff, J.; Kerwin, W. J. (Inventor)

    1976-01-01

    High efficiency, multi-dimensional thin film vacuum tubes suitable for use in high temperature, high radiation environments are described. The tubes are fabricated by placing thin film electrode members in selected arrays on facing interior wall surfaces of an alumina substrate envelope. Cathode members are formed using thin films of triple carbonate. The photoresist used in photolithography aids in activation of the cathodes by carbonizing and reacting with the reduced carbonates when heated in vacuum during forming. The finely powdered triple carbonate is mixed with the photoresist used to delineate the cathode locations in the conventional solid state photolithographic manner. Anode and grid members are formed using thin films of refractory metal. Electron flow in the tubes is between grid elements from cathode to anode as in a conventional three-dimensional tube.

  11. Experiences of Supervision at Practice Placement Sites

    Directory of Open Access Journals (Sweden)

    Lesley Diack

    2014-01-01

    Full Text Available Background. Whilst placement supervision and clinical education programmes are of significant value in shaping the behaviours of undergraduate healthcare students, appropriate provisions which are efficacious to the learner are somewhat lacking, particularly for students studying on UK MPharm programmes. Objectives. To explore and explain the value of placement supervision to the personal development and employability of undergraduate pharmacy students. Methods. Students participated in a week long community pharmacy pilot programme, a result of a collaborative effort between the School of Pharmacy and Life Sciences and a small consortium of community pharmacies. Students and stakeholders were asked to evaluate their experiences via separate questionnaires which had been developed to elicit views and attitudes. Key Findings. Feedback from students and stakeholders towards the experience was overwhelmingly positive with multiple benefits being reported. Of particular prominence was the emphasis in student feedback on the value of placement supervision to their professional and personal development. Findings were indicative of a development in clinical practice proficiencies, core skills, and improvement in decision-making practice. Conclusions. The benefits of clinical supervision to the professional and personal development of MPharm students are well documented, although attracting professional pharmacy supervisors is proving a problematic task for educational providers in the UK.

  12. FPGA Congestion-Driven Placement Refinement

    Energy Technology Data Exchange (ETDEWEB)

    Vicente de, J.

    2005-07-01

    The routing congestion usually limits the complete proficiency of the FPGA logic resources. A key question can be formulated regarding the benefits of estimating the congestion at placement stage. In the last years, it is gaining acceptance the idea of a detailed placement taking into account congestion. In this paper, we resort to the Thermodynamic Simulated Annealing (TSA) algorithm to perform a congestion-driven placement refinement on the top of the common Bounding-Box pre optimized solution. The adaptive properties of TSA allow the search to preserve the solution quality of the pre optimized solution while improving other fine-grain objectives. Regarding the cost function two approaches have been considered. In the first one Expected Occupation (EO), a detailed probabilistic model to account for channel congestion is evaluated. We show that in spite of the minute detail of EO, the inherent uncertainty of this probabilistic model impedes to relieve congestion beyond the sole application of the Bounding-Box cost function. In the second approach we resort to the fast Rectilinear Steiner Regions algorithm to perform not an estimation but a measurement of the global routing congestion. This second strategy allows us to successfully reduce the requested channel width for a set of benchmark circuits with respect to the widespread Versatile Place and Route (VPR) tool. (Author) 31 refs.

  13. Can donated media placements reach intended audiences?

    Science.gov (United States)

    Cooper, Crystale Purvis; Gelb, Cynthia A; Chu, Jennifer; Polonec, Lindsey

    2013-09-01

    Donated media placements for public service announcements (PSAs) can be difficult to secure, and may not always reach intended audiences. Strategies used by the Centers for Disease Control and Prevention's (CDC) Screen for Life: National Colorectal Cancer Action Campaign (SFL) to obtain donated media placements include producing a diverse mix of high-quality PSAs, co-branding with state and tribal health agencies, securing celebrity involvement, monitoring media trends to identify new distribution opportunities, and strategically timing the release of PSAs. To investigate open-ended recall of PSAs promoting colorectal cancer screening, CDC conducted 12 focus groups in three U.S. cities with men and women either nearing age 50 years, when screening is recommended to begin, or aged 50-75 years who were not in compliance with screening guidelines. In most focus groups, multiple participants recalled exposure to PSAs promoting colorectal cancer screening, and most of these individuals reported having seen SFL PSAs on television, in transit stations, or on the sides of public buses. Some participants reported exposure to SFL PSAs without prompting from the moderator, as they explained how they learned about the disease. Several participants reported learning key campaign messages from PSAs, including that colorectal cancer screening should begin at age 50 years and screening can find polyps so they can be removed before becoming cancerous. Donated media placements can reach and educate mass audiences, including millions of U.S. adults who have not been screened appropriately for colorectal cancer. PMID:23720533

  14. Neural Tube Defects

    OpenAIRE

    Greene, Nicholas D. E.; Copp, Andrew J.

    2014-01-01

    Neural tube defects (NTDs), including spina bifida and anencephaly, are severe birth defects of the central nervous system that originate during embryonic development when the neural tube fails to close completely. Human NTDs are multifactorial, with contributions from both genetic and environmental factors. The genetic basis is not yet well understood, but several nongenetic risk factors have been identified as have possibilities for prevention by maternal folic acid supplementation. Mechani...

  15. Power vacuum tubes handbook

    CERN Document Server

    Whitaker, Jerry

    2012-01-01

    Providing examples of applications, Power Vacuum Tubes Handbook, Third Edition examines the underlying technology of each type of power vacuum tube device in common use today. The author presents basic principles, reports on new development efforts, and discusses implementation and maintenance considerations. Supporting mathematical equations and extensive technical illustrations and schematic diagrams help readers understand the material. Translate Principles into Specific Applications This one-stop reference is a hands-on guide for engineering personnel involved in the design, specification,

  16. Aeronautical tubes and pipes

    Science.gov (United States)

    Beauclair, N.

    1984-12-01

    The main and subcomponent French suppliers of aircraft tubes and pipes are discussed, and the state of the industry is analyzed. Quality control is essential for tubes with regard to their i.d. and metallurgical compositions. French regulations do not allow welded seam tubes in hydraulic circuits unless no other form is available, and then rustproofed steel must be installed. The actual low level of orders for any run of tubes dictates that the product is only one of several among the manufacturers' line. Automation, both in NDT and quality control, assures that the tubes meet specifications. A total of 10 French companies participate in the industry, serving both civil and military needs, with some companies specializing only in titanium, steel, or aluminum materials. Concerns wishing to enter the market must upgrade their equipment to meet the higher aeronautical specifications and be prepared to furnish tubes and pipes that serve both functional and structural purposes simultaneously. Additionally, pipe-bending machines must also perform to tight specifications. Pipes can range from 0.2 mm exterior diameter to 40 mm, with wall thicknesses from 0.02 mm to 3 mm. A chart containing a list of manufacturers and their respective specifications and characteristics is presented, and a downtrend in production with reduction of personnel is noted.

  17. FROM BRAND PLACEMENT TO TOURISM PRODUCT PLACEMENT. FICTION SERIES AS PROMOTIONAL SUPPORT OF SPANISH TOURISM DESTINATIONS

    Directory of Open Access Journals (Sweden)

    Noelia Araújo-Vila

    2011-12-01

    Full Text Available Every day more consumers spend much of their free time to the consumption of audiovisual series, which is reflected in the notable increase in downloads and audiences. Therefore, many sectors have decided to use audiovisual series as advertising (brand placement, being one of them the tourism sector (tourism product placement. There are many worldwide destinations that have decided to set in a fiction series, thus being viewed by thousands of spectators, which has resulted in increases in visitors. In the Spanish case is not so clear the use of this strategy, as it is analysed in this article.

  18. Geiger-Muller tubes

    International Nuclear Information System (INIS)

    A Geiger-Muller tube designed for use in an environment (for example, mounted on a rock drill) where subjected to mechanical shock and vibration has a tensioned anode wire secured by welding to securement members between first and second mounts at opposite ends of the tube envelope. The wire tension is adjusted to a high value with a screwable-adjustment means which is locked eg. by a spot-weld or by a locking nut, in the adjusted position, so that the natural frequency of the vibration of the tensioned wire does not resonate with (and may be much higher than) the frequencies to which the tube is subjected in use. The wire frequency is typically in excess of 400Hz and even 500Hz. The adjustment means may be included in the mount via which the envelope is evacuated and back-filled with the ionizible gas, and a gas-tight seal can be provided around this part of the mount, for example by sealing off the gas pump tube. However the adjustment means may be designed into another part of the tube, for example using telescopic parts of the envelope whose sliding junction is made gas tight with a flexible seal. (author)

  19. Categorising YouTube

    Directory of Open Access Journals (Sweden)

    Thomas Mosebo Simonsen

    2011-09-01

    Full Text Available This article provides a genre analytical approach to creating a typology of the User Generated Content (UGC of YouTube. The article investigates the construction of navigationprocesses on the YouTube website. It suggests a pragmatic genre approach that is expanded through a focus on YouTube’s technological affordances. Through an analysis of the different pragmatic contexts of YouTube, it is argued that a taxonomic understanding of YouTube must be analysed in regards to the vacillation of a user-driven bottom-up folksonomy and a hierarchical browsing system that emphasises a culture of competition and which favours the already popular content of YouTube. With this taxonomic approach, the UGC videos are registered and analysed in terms of empirically based observations. The article identifies various UGC categories and their principal characteristics. Furthermore, general tendencies of the UGC within the interacting relationship of new and old genres are discussed. It is argued that the utility of a conventional categorical system is primarily of analytical and theoretical interest rather than as a practical instrument.

  20. Effect of tube size on electromagnetic tube bulging

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    The commercial finite code ANSYS was employed for the simulation of the electromagnetic tube bulging process. The finite element model and boundary conditions were thoroughly discussed. ANSYS/EMAG was used to model the time varying electromagnetic field in order to obtain the radial and axial magnetic pressure acting on the tube. The magnetic pressure was then used as boundary conditions to model the high velocity deformation of various length tube with ANSYS/LSDYNA. The time space distribution of magnetic pressure on various length tubes was presented. Effect of tube size on the distribution of radial magnetic pressure and axial magnetic pressure and high velocity deformation were discussed. According to the radial magnetic pressure ratio of tube end to tube center and corresponding dimensionless length ratio of tube to coil, the free electromagnetic tube bulging was studied in classification. The calculated results show good agreements with practice.

  1. Pre- and Postoperative Vomiting in Children Undergoing Video-Assisted Gastrostomy Tube Placement

    Directory of Open Access Journals (Sweden)

    Torbjörn Backman

    2014-01-01

    Full Text Available Background. The aim of this study was to determine the incidence of pre- and postoperative vomiting in children undergoing a Video-Assisted Gastrostomy (VAG operation. Patients and Methods. 180 children underwent a VAG operation and were subdivided into groups based on their underlying diagnosis. An anamnesis with respect to vomiting was taken from each of the children’s parents before the operation. After the VAG operation, all patients were followed prospectively at one and six months after surgery. All complications including vomiting were documented according to a standardized protocol. Results. Vomiting occurred preoperatively in 51 children (28%. One month after surgery the incidence was 43 (24% in the same group of children and six months after it was found in 40 (22%. There was a difference in vomiting frequency both pre- and postoperatively between the children in the groups with different diagnoses included in the study. No difference was noted in pre- and postoperative vomiting frequency within each specific diagnosis group. Conclusion. The preoperative vomiting symptoms persisted after the VAG operation. Neurologically impaired children had a higher incidence of vomiting than patients with other diagnoses, a well-known fact, probably due to their underlying diagnosis and not the VAG operation. This information is useful in preoperative counselling.

  2. Temporal comparison of ultrasound vs. auscultation and capnography in verification of endotracheal tube placement

    DEFF Research Database (Denmark)

    Pfeiffer, P; Rudolph, S S; Neimann, Jens Dupont Børglum;

    2011-01-01

    This study compared the time consumption of bilateral lung ultrasound with auscultation and capnography for verifying endotracheal intubation.......This study compared the time consumption of bilateral lung ultrasound with auscultation and capnography for verifying endotracheal intubation....

  3. Effective conflict resolution strategies for SRAF placement

    Science.gov (United States)

    Ganjugunte, Shashidhara K.; Strecker, Norbert; Jayaram, Srividya; LaCour, Pat; Torunoglu, Ilhami

    2015-07-01

    Sub-Resolution Assist Features (SRAFs) have emerged as a key technology to enable semiconductor manufacturing for advanced technology nodes. SRAF placement is required to adhere to manufacturability constraints (MRC). MRC specifications are distance and size constraints specified by the user to ensure SRAFs are not detrimental to the final target shapes being printed. Conceptually, SRAF placement can be divided into two steps - SRAF candidate generation and SRAF candidate cleanup or conflict resolution. SRAFs generated as candidates may not adhere to MRC constraints. It is during the cleanup/conflict resolution process that the MRC constraints are enforced. In this paper we focus on the latter phase - cleanup. The goal of the cleanup phase is to retain as much of the initial candidates as possible, and, if necessary, transform them to adhere to MRC conditions. An SRAF is said to be in conflict with another shape if it violates the distance MRC constraint. One can model these conflicts using a conflict graph G=(V,E), whose vertices V correspond to geometric shapes involved in a conflict and an edge is present in E, between two vertices if the corresponding shapes are involved in a conflict. A weight is associated with each vertex that could, for example, correspond to area of the corresponding shape. The goal of conflict resolution then, is to find a transformation of the vertices so that the resulting graph is conflict free while maximizing the weight of vertices retained. This can be viewed as a generalization of the computationally hard problem of finding the largest independent set of candidates, albeit allowing for transformation. The transformations we allow include deletion, splitting, resizing, merge, and bounded translation. In this paper, we describe an approach which classifies the conflicts and apply appropriate transformations to achieve effective SRAF placement. Further, we demonstrate that such a strategy reduces the number of rules to be specified by

  4. Orientation to student placements: needs and benefits.

    Science.gov (United States)

    Worrall, Katie

    2007-02-01

    A review of evidence on the benefits and challenges of student orientation is used in this article alongside experiences of orientation days on a children's ward to consider ways in which such programmes could be improved. Orientation to clinical placements can enhance learning by helping students to feel they fit in, reduce anxiety and increase motivation to learn through early identification of learning outcomes. However, there are challenges in the practical implementation of orientation including timing of students' starting dates, staff time, consistency and level of information and teaching. Increased involvement of individual mentors could improve orientation and optimise students' learning experiences. PMID:17326556

  5. Product placement as a form of advertainment

    Directory of Open Access Journals (Sweden)

    Chiţu, I. B.

    2010-12-01

    Full Text Available Nowadays, one of the big issues advertisers on television face is the consumer’s (viewer’s ability to “zap” advertisements, as the public is increasingly tired of commercials. Advertainment is a form of communication that combines the elements of advertising and entertainment and is designed to overcome the tendency, especially among television viewers, to change channels or mute the audio during standard advertising commercials. This paper tries to give a brief overview of a method that belongs to advertainment, product placement, and how it is used by companies.

  6. Post-placement temperature reduction techniques

    DEFF Research Database (Denmark)

    Liu, Wei; Nannarelli, Alberto

    2010-01-01

    With technology scaled to deep submicron era, temperature and temperature gradient have emerged as important design criteria. We propose two post-placement techniques to reduce peak temperature by intelligently allocating whitespace in the hotspots. Both methods are fully compliant with commercial...... technologies, and can be easily integrated with state-of-the-art thermal-aware design flow. Experiments in a set of tests on circuits implemented in STM 65nm technologies show that our methods achieve better peak temperature reduction than directly increasing circuit's area....

  7. Optimizing Spacecraft Placement for Liaison Constellations

    Science.gov (United States)

    Chow, C. Channing; Villac, Benjamin F.; Lo, Martin W.

    2011-01-01

    A navigation and communications network is proposed to support an anticipated need for infrastructure in the Earth-Moon system. Periodic orbits will host the constellations while a novel, autonomous navigation strategy will guide the spacecraft along their path strictly based on satellite-to-satellite telemetry. In particular, this paper investigates the second stage of a larger constellation optimization scheme for multi-spacecraft systems. That is, following an initial orbit down-selection process, this analysis provides insights into the ancillary problem of spacecraft placement. Two case studies are presented that consider configurations of up to four spacecraft for a halo orbit and a cycler trajectory.

  8. Kajian Efektifitas Sistem Struktur Tube Dengan Sistem Struktur Tube In Tube Di Bawah Beban Gempa

    OpenAIRE

    Sihotang, Dian Frisca

    2010-01-01

    Berkembangnya teknologi telah melahirkan berbagai sistem struktur bangunan tahan gempa, seperti penggunaan sistem tube.Tube adalah merupakan frame penahan gaya yang menahan gaya gaya lateral dengan struktur kantilever kotak yang memiliki jarak kolom yang berdekatan yang dipasang pada sekeliling gedung, sehingga penampilan wajah depan gedung seperti lubang jendela jendela yang terbuka. Rancangan tube ini kemudian dimodifikasi lagi dengan menambah pengaku pada bagian dalam ( konsep tube in tube...

  9. Actual problems of product placement and embedded (surreptitious) advertising

    OpenAIRE

    Maria Yurina

    2015-01-01

    This research paper covers examples and problems arising from product placement and surreptitious advertising. Product placement and surreptitious advertising are so similar but absolutely different types of advertising, while product placement may not be considered advertising at all. The point at issue arises when it is difficult to determine the real object of advertising. A separate cluster of marketing is a publishing of advertisement information in consumer products, which are not direc...

  10. High cost residential placements for adults with intellectual disabilities.

    OpenAIRE

    McGill, Peter; Poynter, Jo

    2012-01-01

    Background Concern has been expressed repeatedly about the cost and quality of residential placements for adults with learning disabilities and additional needs. This study sought to identify characteristics of the highest cost placements in the South-East of England. Method Lead learning disability commissioners in the South-East of England were asked to provide information about the five highest cost residential placements that they commissioned for adults with learning ...

  11. Robust sensor placement for leak location: analysis and design

    OpenAIRE

    Blesa, Joaquim; Nejjari, Fatiha; Sarrate, Ramon

    2016-01-01

    In this paper, a nominal sensor placement methodology for leak location in water distribution networks is presented. To reduce the size and the complexity of the optimization problem a clustering technique is combined with the nominal sensor placement methodology. Some of the pressure sensor placement methods for leak detection and location in water distribution networks are based on the pressure sensitivity matrix analysis. This matrix depends on the network demands, which are nondeterminist...

  12. Neural tube defects

    OpenAIRE

    M.E. Marshall

    1981-01-01

    Neural tube defects refer to any defect in the morphogenesis of the neural tube, the most common types being spina bifida and anencephaly. Spina bifida has been recognised in skeletons found in north-eastern Morocco and estimated to have an age of almost 12 000 years. It was also known to the ancient Greek and Arabian physicians who thought that the bony defect was due to the tumour. The term spina bifida was first used by Professor Nicolai Tulp of Amsterdam in 1652. Many other terms have bee...

  13. Placement suitability criteria of composite tape for mould surface in automated tape placement

    Directory of Open Access Journals (Sweden)

    Zhang Peng

    2015-10-01

    Full Text Available Automated tape placement is an important automated process used for fabrication of large composite structures in aeronautical industry. The carbon fiber composite parts realized with this process tend to replace the aluminum parts produced by high-speed machining. It is difficult to determine the appropriate width of the composite tape in automated tape placement. Wrinkling will appear in the tape if it does not suit for the mould surface. Thus, this paper deals with establishing placement suitability criteria of the composite tape for the mould surface. With the assumptions for ideal mapping and by applying some principles and theorems of differential geometry, the centerline trajectory of the composite tape is identified to follow the geodesic. The placement suitability of the composite tape is examined on three different types of non-developable mould surfaces and four criteria are derived. The developed criteria have been used to test the deposition process over several mould surfaces and the appropriate width for each mould surface is obtained by referring to these criteria.

  14. Prawns in Bamboo Tube

    Institute of Scientific and Technical Information of China (English)

    1998-01-01

    Ingredients: 400 grams Jiwei prawns, 25 grams pork shreds, 5 grams sliced garlic. Condiments: 5 grams cooking oil, minced ginger root and scallions, cooking wine, salt, pepper and MSG (optional) Method: 1. Place the Shelled prawns into a bowl and mix with all the condiments. 2. Stuff the prawns into a fresh bamboo tube,

  15. Thoughts of accelerator tubes

    International Nuclear Information System (INIS)

    A brief, subjective review is given of mechanisms that may be limiting electrostatic accelerator tubes to present levels of performance. Suggestions are made for attacking these limitations with the purpose of stimulating the thinking of designers and users of electrostatic accelerators

  16. The interventional treatment for biliary recurrent obstruction after palliative T tube drainage in patients with obstruction due to cholangiocarcinoma

    International Nuclear Information System (INIS)

    Objective: To explore the interventional method to treat biliary recurrent jaundice after T tube drainage in patients with malignant obstructive jaundice due to cholangiocarcinoma. Methods: 7 biliary metallic stents were placed in 7 patients with recurrent jaundice after T-tube drainage in cholangiocarcinoma cases. Results: Stent placement was once successful in all 7 cases with successful rate of 100%. For all cases, TBIL, ALT, GTP and AKP values 7 days postoperatively were significantly lower than that of preoperation together with subsidence of jaundice satisfactorily for 100% after the treatment. Conclusions: Percutaneous placement of biliary metallic stents was effective economic, minimal invasive and safe for palliation of biliary recurrent jaundice after T tube drainage in cholangiocarcinoma-induced obstructive jaundice

  17. Quarter-wave pulse tube

    Science.gov (United States)

    Swift, G. W.; Gardner, D. L.; Backhaus, S. N.

    2011-10-01

    In high-power pulse-tube refrigerators, the pulse tube itself can be very long without too much dissipation of acoustic power on its walls. The pressure amplitude, the volume-flow-rate amplitude, and the time phase between them evolve significantly along a pulse tube that is about a quarter-wavelength long. Proper choice of length and area makes the oscillations at the ambient end of the long pulse tube optimal for driving a second, smaller pulse-tube refrigerator, thereby utilizing the acoustic power that would typically have been dissipated in the first pulse-tube refrigerator's orifice. Experiments show that little heat is carried from the ambient heat exchanger to the cold heat exchanger in such a long pulse tube, even though the oscillations are turbulent and even when the tube is compactly coiled.

  18. Drift tubes of Linac 2

    CERN Multimedia

    Photographic Service

    1977-01-01

    Being redied for installation, those at the right are for tank 1, those on the left for tank 2. Contrary to Linac 1, which had drift-tubes supported on stems, here the tubes are suspended, for better mechanical stability.

  19. Laser welding of a tube

    International Nuclear Information System (INIS)

    For sleeving PWR steam generator tubes, the welding laser work is made under protection of a primary gas going out by the crossing window of the laser and under a secondary gas flowing axially through the head and the tube

  20. Tubing For Sampling Hydrazine Vapor

    Science.gov (United States)

    Travis, Josh; Taffe, Patricia S.; Rose-Pehrsson, Susan L.; Wyatt, Jeffrey R.

    1993-01-01

    Report evaluates flexible tubing used for transporting such hypergolic vapors as those of hydrazines for quantitative analysis. Describes experiments in which variety of tubing materials, chosen for their known compatibility with hydrazine, flexibility, and resistance to heat.

  1. Ultrasonic nondestructive tubing inspection system

    International Nuclear Information System (INIS)

    A system for measuring the extent of tube wall erosion in an inspection region of a heat exchanger tube of a nuclear steam generator, uses an ultrasonic means driven helically inside the eroded tube which may be filled with a fluid (e.g., water) to minimize ultrasonic wave attenuation. A control means cooperates with the ultrasonic means to produce a map of the tube wall thickness in an inspection region

  2. Machine learning techniques for fault isolation and sensor placement

    Science.gov (United States)

    Carnes, James R.; Fisher, Douglas H.

    1993-01-01

    Fault isolation and sensor placement are vital for monitoring and diagnosis. A sensor conveys information about a system's state that guides troubleshooting if problems arise. We are using machine learning methods to uncover behavioral patterns over snapshots of system simulations that will aid fault isolation and sensor placement, with an eye towards minimality, fault coverage, and noise tolerance.

  3. 34 CFR 104.35 - Evaluation and placement.

    Science.gov (United States)

    2010-07-01

    ... ASSISTANCE Preschool, Elementary, and Secondary Education § 104.35 Evaluation and placement. (a) Preplacement... 34 Education 1 2010-07-01 2010-07-01 false Evaluation and placement. 104.35 Section 104.35 Education Regulations of the Offices of the Department of Education OFFICE FOR CIVIL RIGHTS, DEPARTMENT...

  4. 46 CFR 130.460 - Placement of machinery alarms.

    Science.gov (United States)

    2010-10-01

    ... 46 Shipping 4 2010-10-01 2010-10-01 false Placement of machinery alarms. 130.460 Section 130.460..., AND MISCELLANEOUS EQUIPMENT AND SYSTEMS Automation of Unattended Machinery Spaces § 130.460 Placement of machinery alarms. (a) Visible and audible alarms must be installed at the pilothouse to...

  5. High Cost Residential Placements for Adults with Intellectual Disabilities

    Science.gov (United States)

    McGill, Peter; Poynter, Jo

    2012-01-01

    Background: Concern has been expressed repeatedly about the cost and quality of residential placements for adults with learning disabilities and additional needs. This study sought to identify characteristics of the highest cost placements in the South-East of England. Method: Lead learning disability commissioners in the South-East of England…

  6. Small Bowel Obstruction Due to Suprapubic Catheter Placement

    OpenAIRE

    Bonasso, Patrick C.; Brandon Lucke-Wold; Uzer Khan

    2016-01-01

    Suprapubic catheter placement has associated complications such as bowel injury, bladder injury, or bleeding. This case describes the management of an elderly patient who had suprapubic catheter placement complicated by small bowel obstruction. The catheter had continued production of urine. Further patient treatment required abdominal exploration and bowel resection.

  7. Small Bowel Obstruction Due to Suprapubic Catheter Placement

    Directory of Open Access Journals (Sweden)

    Patrick C. Bonasso

    2016-07-01

    Full Text Available Suprapubic catheter placement has associated complications such as bowel injury, bladder injury, or bleeding. This case describes the management of an elderly patient who had suprapubic catheter placement complicated by small bowel obstruction. The catheter had continued production of urine. Further patient treatment required abdominal exploration and bowel resection.

  8. Small Bowel Obstruction Due to Suprapubic Catheter Placement.

    Science.gov (United States)

    Bonasso, Patrick C; Lucke-Wold, Brandon; Khan, Uzer

    2016-07-01

    Suprapubic catheter placement has associated complications such as bowel injury, bladder injury, or bleeding. This case describes the management of an elderly patient who had suprapubic catheter placement complicated by small bowel obstruction. The catheter had continued production of urine. Further patient treatment required abdominal exploration and bowel resection. PMID:27335801

  9. Advancing Prediction of Foster Placement Disruption Using Brief Behavioral Screening

    Science.gov (United States)

    Hurlburt, Michael S.; Chamberlain, Patricia; DeGarmo, David; Zhang, Jinjin; Price, Joe M.

    2010-01-01

    Objective: Behavioral difficulties increase the risk that children will experience negative placement disruptions while in foster care. Chamberlain et al. (2006) found that the Parent Daily Report (PDR), a brief measure of parent-reported child behaviors, was a strong predictor of negative placement changes over 1 year among children receiving…

  10. Is a Writing Sample Necessary for "Accurate Placement"?

    Science.gov (United States)

    Sullivan, Patrick; Nielsen, David

    2009-01-01

    The scholarship about assessment for placement is extensive and notoriously ambiguous. Foremost among the questions that continue to be unresolved in this scholarship is this one: Is a writing sample necessary for "accurate placement"? Using a robust data sample of student assessment essays and ACCUPLACER test scores, we put this question to the…

  11. Distinguishing implicit from explicit brand attitudes in brand placement research

    NARCIS (Netherlands)

    A.M. Wennekers; L. Vandeberg; K. Zoon; E.A. van Reijmersdal

    2016-01-01

    Brand placement is a popular topic, both in business and academia. Brands are placed in a wide-ranging array of media, including television programs, movies, radio shows, magazines, games, music videos, and websites. Expenditures on brand placement are still growing (PQ Media, 2013), as well as the

  12. Academic Freedom and Grading: The Role of Placement Providers

    Science.gov (United States)

    Martin, Ian

    2011-01-01

    Placement providers can be successfully involved in assessing students. This is demonstrated in the Monash University Faculty of Information Technology Cooperative Education Program. Students are thoroughly prepared for their placements and industry supervisors receive written assessment guidelines. Not one student has been awarded a pass grade by…

  13. Consumers with Major Depressive Disorder: Factors Influencing Job Placement

    Science.gov (United States)

    Hergenrather, Kenneth C.; Haase, Eileen; Zeglin, Robert J.; Rhodes, Scott D.

    2013-01-01

    The theory of planned behavior (TPB) was applied to study the factors that influence the intention of public rehabilitation placement professionals to place consumers with major depressive disorder (MDD) in jobs. A sample of 108 public rehabilitation placement professionals in the Mid-Atlantic region of the United States completed the MDD…

  14. Creative Contexts: Work Placement Subjectivities for the Creative Industries

    Science.gov (United States)

    Ashton, Daniel

    2016-01-01

    This article examines reflections on work placement experiences generated for the Creative Contexts website by higher education students. The article outlines the aims of Creative Contexts to generate and share placement experiences and stories. The article analyses the reflections films available on the website, and reveals a continuum of agency…

  15. Infant Placement in Canadian Child Maltreatment-Related Investigations

    Science.gov (United States)

    Tonmyr, Lil; Williams, Gabriela; Jack, Susan M.; MacMillan, Harriet L.

    2011-01-01

    This study examined factors associated with decisions in favour of out-of-home placement following investigations involving infants at risk of maltreatment. We used data from a sample of children less than 1 year of age (n = 763) investigated by child welfare services across Canada in 2003. We tested unadjusted relationships with placement using…

  16. Economic and Demographic Factors Impacting Placement of Students with Autism

    Science.gov (United States)

    Kurth, Jennifer A.; Mastergeorge, Ann M.; Paschall, Katherine

    2016-01-01

    Educational placement of students with autism is often associated with child factors, such as IQ and communication skills. However, variability in placement patterns across states suggests that other factors are at play. This study used hierarchical cluster analysis techniques to identify demographic, economic, and educational covariates…

  17. Safety of pull-type and introducer percutaneous endoscopic gastrostomy tubes in oncology patients: a retrospective analysis

    Directory of Open Access Journals (Sweden)

    Pelckmans Paul A

    2011-03-01

    Full Text Available Abstract Background Percutaneous endoscopic gastrostomy (PEG allows long-term tube feeding. Safety of pull-type and introducer PEG placement in oncology patients with head/neck or oesophageal malignancies is unknown. Methods Retrospective analysis of 299 patients undergoing PEG tube placement between January 2006 and December 2008 revealed 57 oncology patients. All patients with head/neck or oesophageal malignancy were treated with chemo- and radiotherapy. In case of high-grade stenosis introducer Freka® Pexact PEG tube was placed (n = 24 and in all other patients (n = 33 conventional pull-type PEG tube. Short-term complications and mortality rates were compared. Results Patients' characteristics and clinical status were comparable in both groups. Short-term complications were encountered in 11/24 (48% introducer PEG patients as compared to only 4/33 (12% pull-type PEG patients (P vs. 0/33 (0%, P vs. 3/33 (9%, NS. Finally, 3/24 gastrointestinal perforations (12% resulted from a difficult placement procedure vs. 1/33 (3%, leading to urgent surgical intervention and admission to ICU. Two introducer PEG patients died at ICU, resulting in an overall mortality rate of 8% vs. 0% (P = 0.091. Conclusion The introducer Freka® Pexact PEG procedure for long-term tube feeding may lead to significantly higher complication and mortality rates in patients with head/neck or oesophageal malignancies treated with chemo- and radiotherapy. It is suggested to use the conventional pull-type PEG tube placement in this group of patients, if possible.

  18. Sleeve puller salvages welded tubes

    Science.gov (United States)

    Weaver, J. F.

    1980-01-01

    Tool removes sleeve remnants without distorting or damaging tubes, unlike pliers and other conventional handtools. Tubes can be reused, saving time, labor, and material in many applications. Sleeve-removal fixture consists of pressure screw, swing arm, locking screws, and base. It removes sleeve remnant from tubing after welded joint has been sawed through.

  19. Source placement for equalization in small enclosures

    DEFF Research Database (Denmark)

    Stefanakis, Nick; Sarris, J.; Cambourakis, G.

    2008-01-01

    ) but not with those that will deteriorate it (the "undesired" modes). Simulation results in rectangular rooms and in a car cavity show the benefits of source placement in terms of reduced overall error and increased spatial robustness in the equalization process. Additional benefits, which can be......The results of a theoretical study of sound equalization in enclosures at low frequencies are presented. The sound field is controlled by sources distributed in the enclosure so that a certain region has a desired complex pressure corresponding to that of a traveling plane wave. The task is the...... detection of the optimum positions for a number of sources in order to minimize the energy of the error over the region of control. According to the direction of propagation, the sources should be placed so as to couple with the modes that will benefit the reproduction of the plane wave (the "desired" modes...

  20. Immediate implant placement: a case report.

    Science.gov (United States)

    Chandra Sekar, A; Praveen, M; Saxena, Aarti; Gautam, A

    2012-06-01

    This case report describes extraction of a fractured left maxillary lateral incisor tooth, followed by immediate placement of a dental implant in the prepared socket and temporization by a bonded restoration. The tooth was atraumatically extracted, the socket was prepared to the required depth and a Biohorizon Implant was inserted followed a week later by temporization by a bonded restoration. An impression was made 4 months after implant insertion, and a definitive restoration was placed. The atraumatic operating technique and the immediate insertion of the Implant resulted in the preservation of the hard and soft tissues at the extraction site. The patient exhibited no clinical or radiologic complications through 5 years of clinical monitoring. The dental implant and provisional restoration provided the patient with immediate esthetics, function, comfort, and most importantly preservation of tissues. PMID:23858286

  1. Brocade: Optimal flow placement in SDN networks

    CERN Document Server

    CERN. Geneva

    2015-01-01

    Today' network poses several challanges to network providers. These challanges fall in to a variety of areas ranging from determining efficient utilization of network bandwidth to finding out which user applications consume majority of network resources. Also, how to protect a given network from volumetric and botnet attacks. Optimal placement of flows deal with identifying network issues and addressing them in a real-time. The overall solution helps in building new services where a network is more secure and more efficient. Benefits derived as a result are increased network efficiency due to better capacity and resource planning, better security with real-time threat mitigation, and improved user experience as a result of increased service velocity.

  2. Camera placement in integer lattices (extended abstract)

    Science.gov (United States)

    Pocchiola, Michel; Kranakis, Evangelos

    1990-09-01

    Techniques for studying an art gallery problem (the camera placement problem) in the infinite lattice (L sup d) of d tuples of integers are considered. A lattice point A is visible from a camera C positioned at a vertex of (L sup d) if A does not equal C and if the line segment joining A and C crosses no other lattice vertex. By using a combination of probabilistic, combinatorial optimization and algorithmic techniques the position they must occupy in the lattice (L sup d) in the order to maximize their visibility can be determined in polynomial time, for any given number s less than or equal to (5 sup d) of cameras. This improves previous results for s less than or equal to (3 sup d).

  3. Source placement for equalization in small enclosures

    DEFF Research Database (Denmark)

    Stefanakis, Nick; Sarris, J.; Cambourakis, G.

    2008-01-01

    The results of a theoretical study of sound equalization in enclosures at low frequencies are presented. The sound field is controlled by sources distributed in the enclosure so that a certain region has a desired complex pressure corresponding to that of a traveling plane wave. The task is the...... detection of the optimum positions for a number of sources in order to minimize the energy of the error over the region of control. According to the direction of propagation, the sources should be placed so as to couple with the modes that will benefit the reproduction of the plane wave (the "desired" modes......) but not with those that will deteriorate it (the "undesired" modes). Simulation results in rectangular rooms and in a car cavity show the benefits of source placement in terms of reduced overall error and increased spatial robustness in the equalization process. Additional benefits, which can be...

  4. Sensor Placement for Modal Parameter Subset Estimation

    DEFF Research Database (Denmark)

    Ulriksen, Martin Dalgaard; Bernal, Dionisio; Damkilde, Lars

    2016-01-01

    The present paper proposes an approach for deciding on sensor placements in the context of modal parameter estimation from vibration measurements. The approach is based on placing sensors, of which the amount is determined a priori, such that the minimum Fisher information that the frequency...... responses carry on the selected modal parameter subset is, in some sense, maximized. The approach is validated in the context of a simple 10-DOF mass-spring-damper system by computing the variance of a set of identified modal parameters in a Monte Carlo setting for a set of sensor configurations, whose......). It is shown that the widely used Effective Independence (EI) method, which uses the modal amplitudes as surrogates for the parameters of interest, provides sensor configurations yielding theoretical lower bound variances whose maxima are up to 30 % larger than those obtained by use of the max-min approach....

  5. Cumulative Risks of Foster Care Placement for Danish Children

    DEFF Research Database (Denmark)

    Fallesen, Peter; Emanuel, Natalia; Wildeman, Christopher

    2014-01-01

    Although recent research suggests that the cumulative risk of foster care placement is far higher for American children than originally suspected, little is known about the cumulative risk of foster care placement in other countries, which makes it difficult to gauge the degree to which factor...... foster care placement is salient in other contexts. In this article, we provide companion estimates to those provided in recent work on the US by using Danish registry data and synthetic cohort life tables to show how high and unequally distributed the cumulative risk of foster care placement is for...... Danish children. Results suggest that at the beginning of the study period (in 1998) the cumulative risk of foster care placement for Danish children was roughly in line with the risk for American children. Yet, by the end of the study period (2010), the risk had declined to half the risk for American...

  6. Strategies for Controlled Placement of Nanoscale Building Blocks

    Directory of Open Access Journals (Sweden)

    Koh SeongJin

    2007-01-01

    Full Text Available AbstractThe capability of placing individual nanoscale building blocks on exact substrate locations in a controlled manner is one of the key requirements to realize future electronic, optical, and magnetic devices and sensors that are composed of such blocks. This article reviews some important advances in the strategies for controlled placement of nanoscale building blocks. In particular, we will overview template assisted placement that utilizes physical, molecular, or electrostatic templates, DNA-programmed assembly, placement using dielectrophoresis, approaches for non-close-packed assembly of spherical particles, and recent development of focused placement schemes including electrostatic funneling, focused placement via molecular gradient patterns, electrodynamic focusing of charged aerosols, and others.

  7. Radiological considerations regarding an alternate method for the placement of intermediate impact absorbers at the Canister Storage Building (CSB)

    International Nuclear Information System (INIS)

    This report documents radiological considerations arising from the proposed implementation of an alternate method for intermediate impact absorber placement at the Canister Storage Building (CSB). These considerations include revising the dose rate estimate, at deck level over an open storage tube and outlining the administrative controls necessary for this implementation. Currently, the MCO Handling Machine (MHM) is used to install the intermediate impact absorbers. The proposed alternative would utilize a mobile crane, thus freeing up the MHM to handle the movement of MCOs within the CSB

  8. Neural tube defects

    Directory of Open Access Journals (Sweden)

    M.E. Marshall

    1981-09-01

    Full Text Available Neural tube defects refer to any defect in the morphogenesis of the neural tube, the most common types being spina bifida and anencephaly. Spina bifida has been recognised in skeletons found in north-eastern Morocco and estimated to have an age of almost 12 000 years. It was also known to the ancient Greek and Arabian physicians who thought that the bony defect was due to the tumour. The term spina bifida was first used by Professor Nicolai Tulp of Amsterdam in 1652. Many other terms have been used to describe this defect, but spina bifida remains the most useful general term, as it describes the separation of the vertebral elements in the midline.

  9. Comparison of esophageal placement of Bravo capsule system under direct endoscopic guidance with conventional placement method

    Directory of Open Access Journals (Sweden)

    Aijaz A Sofi

    2010-10-01

    Full Text Available Aijaz A Sofi, Charles Filipiak, Thomas Sodeman, Usman Ahmad, Ali Nawras, Isam DaboulDepartment of Medicine, Division of Gastroenterology, University of Toledo Medical Center, Toledo, Ohio, USABackground: Conventional placement of a wireless esophageal pH monitoring device in the esophagus requires initial endoscopy to determine the distance to the gastroesophageal junction. Blind placement of the capsule by the Bravo delivery system is followed by repeat endoscopy to confirm placement. Alternatively, the capsule can be placed under direct vision during endoscopy. Currently there are no published data comparing the efficiency of one method over the other. The objective of this study was to compare the method of Bravo wireless pH deviceplacement under direct visualization with the conventional method.Methods: A retrospective study involving 58 patients (29 patients with indirect and 29 patients with direct visualization who had Bravo capsule placement. The physician endoscopy procedure notes, nurse’s notes, postprocedure notes, recovery notes, and pH monitoring results were reviewed. The safety of the procedures, length of the procedures, and patient tolerability were evaluated.Results: None of the 58 patients had early detachment of the device and had no immediate procedure-related complications. The overall incidence of complications in both the groups was similar. No failures due to the technique were noted in either group. Average amount of time taken for the procedure was similar in both groups.Conclusion: The technique of placing a Bravo pH device under direct visualization is as safe and effective as the conventional method. In addition, there is an added advantage of avoiding a second endoscopic intubation in the direct visualization technique.Keywords: Bravo capsule, technique, esophageal pH monitoring

  10. X-ray tubes

    International Nuclear Information System (INIS)

    An improved form of x-ray tube is described which consists of a rotatable anode disc and an electron beam source enclosed in an envelope. The beam of electrons strikes the edge of the anode disc at an acute angle, producing x-rays which are transmitted through a window in the envelope. To improve performance and life of the anode disc it is additionally reciprocated back and forth along its axis of rotation. Dimensions are specified. (U.K.)

  11. Primary fallopian tube carcinoma

    Directory of Open Access Journals (Sweden)

    Mladenović-Segedi Ljiljana

    2009-01-01

    Full Text Available Introduction. Primary fallopian tube carcinoma is extremely rare, making 0.3-1.6% of all female genital tract malignancies. Although the etymology of this tumor is unknown, it is suggested to be associated with chronic tubal inflammation, infertility, tuberculous salpingitis and tubal endometriosis. High parity is considered to be protective. Cytogenetic studies show the disease to be associated with over expression of p53, HER2/neu and c-myb. There is also some evidence that BRCA1 and BRCA2 mutations have a role in umorogeneis. Clinical features. The most prevailing symptoms with fallopian tube carcinoma are abdominal pain, abnormal vaginal discharge/bleeding and the most common finding is an adnexal mass. In many patients, fallopian tube carcinoma is asymptomatic. Diagnosis. Due to its rarity, preoperative diagnosis of primary fallopian tube carcinoma is rarely made. It is usually misdiagnosed as ovarian carcinoma, tuboovarian abscess or ectopic pregnancy. Sonographic features of the tumor are non-specific and include the presence of a fluid-filled adnexal structure with a significant solid component, a sausage-shaped mass, a cystic mass with papillary projections within, a cystic mass with cog wheel appearance and an ovoid-shaped structure containing an incomplete separation and a highly vascular solid nodule. More than 80% of patients have elevated pretreatment serum CA-125 levels, which is useful in follow-up after the definite treatment. Treatment. The treatment approach is similar to that of ovarian carcinoma, and includes total abdominal hysterectomy and bilateral salpingo-oophorectomy. Staging is followed with chemotherapy.

  12. Fabrication of seamless calandria tubes

    International Nuclear Information System (INIS)

    Full text: Calandria tube is a large diameter, thin walled zircaloy-4 tube and is an important structural component of PHWR type of reactors. These tubes are lifetime components and remain during the full life of the reactor. Calandria tubes are classified as extremely thin walled tubes with a diameter to wall thickness ratio of around 96. Such thin walled tubes are conventionally produced by seam welded route comprising of extrusion of slabs followed by a series of hot and rolling passes, shaping into O-shape and eventual welding. An alternative and superior method of fabricating the calandria tubes, the seamless route, has been developed, which involves hot extrusion of mother blanks followed by three successive cold pilger reductions. Eccentricity correction of the extruded blanks is carried out on a special purpose grinding equipment to bring the wall thickness variation within permissible limits. Predominant wall thickness reductions are given during cold pilgering to ensure high Q-factor values. The texture in the finished tubes could be closely, controlled with an average fr value of 0.65. Pilgering parameters and tube guiding system have been specially designed to facilities rolling of thin walled tubes. Seamless calandria tubes have distinct advantages over welded tubes. In addition to the absence of weld, they are dimensionally more stable, lighter in weight and possess uniform grains with superior grain size. The cycle time from billet to finished product is substantially reduced and the product is amenable to high level of quality assurance. The most significant feature of the seamless route is its material recovery over welded route. Residual stresses measured in the tubes indicate that these are negligible and uniform along the length of the tube. In view of their superior quality, the first charge of seamless calandria tubes will be rolled into the first 500 MWe Pressurised Heavy Water Reactor at Tarapur

  13. Clogging of feeding tubes.

    Science.gov (United States)

    Marcuard, S P; Perkins, A M

    1988-01-01

    This is a report of an in vitro study evaluating clotting ability of some formulas with intact protein and hydrolyzed protein sources in a series of buffers ranging from a pH of 1 thru 10. The following 10 products were tested: Ensure Plus, Ensure, Enrich, Osmolite, Pulmocare, Citrotein, Resource, Vivonex TEN, Vital, and Hepatic Acid II. Protein (10 and 20 g/liter) was added to Citrotein and Ensure Plus. All formulas were tested at full and some at half strength. Clotting occurred only in premixed intact protein formulas (Pulmocare, Ensure Plus, Osmolite, Enrich, Ensure) and in Resource. No clotting was observed for Citrotein (intact protein formula in powder form), Vital, Vivonex TEN, and Hepatic Aid II. Adding protein did not cause or increase clotting. In summary, clotting of some liquid formula diet appears to be an important factor causing possible gastric feeding tube occlusion. The following measures may help in preventing this problem: flushing before and after aspirating for gastric residuals to eliminate acid precipitation of formula in the feeding tube, advance the nasogastric feeding tube into the duodenum if possible, and avoid mixing these products with liquid medications having a pH value of 5.0 or less. PMID:3138452

  14. Traveling-Wave Tubes

    Science.gov (United States)

    Kory, Carol L.

    1998-01-01

    The traveling-wave tube (TWT) is a vacuum device invented in the early 1940's used for amplification at microwave frequencies. Amplification is attained by surrendering kinetic energy from an electron beam to a radio frequency (RF) electromagnetic wave. The demand for vacuum devices has been decreased largely by the advent of solid-state devices. However, although solid state devices have replaced vacuum devices in many areas, there are still many applications such as radar, electronic countermeasures and satellite communications, that require operating characteristics such as high power (Watts to Megawatts), high frequency (below 1 GHz to over 100 GHz) and large bandwidth that only vacuum devices can provide. Vacuum devices are also deemed irreplaceable in the music industry where musicians treasure their tube-based amplifiers claiming that the solid-state and digital counterparts could never provide the same "warmth" (3). The term traveling-wave tube includes both fast-wave and slow-wave devices. This article will concentrate on slow-wave devices as the vast majority of TWTs in operation fall into this category.

  15. Placement History of Foster Children: A Study of Placement History and Outcomes in Long-Term Family Foster Care

    Science.gov (United States)

    Strijker, Johan; Knorth, Erik J.; Knot-Dickscheit, Jana

    2008-01-01

    The files of 419 children in family foster care and kinship foster care were used in a retrospective longitudinal design study that examined their placement histories in child welfare. Significant associations were found between the number of placements on one hand, and the prevalence of attachment disorders, severity of behavioral problems, and…

  16. CRL X-RAY TUBE

    OpenAIRE

    Kolchevsky, N. N.; Petrov, P. V.

    2015-01-01

    A novel types of X-ray tubes with refractive lenses are proposed. CRL-R X-ray tube consists of Compound Refractive Lens- CRL and Reflection X-ray tube. CRL acts as X-ray window. CRL-T X-ray consists of CRL and Transmission X-ray tube. CRL acts as target for electron beam. CRL refractive lens acts as filter, collimator, waveguide and focusing lens. Properties and construction of the CRL X-ray tube are discussed.

  17. Spectrometer beam tube dimensional optimization

    International Nuclear Information System (INIS)

    This project examined the optimization of the design of a beam tube. An ANSYS model was used to find the minimum tube thickness and the best camber in a beam tube under vacuum and preloaded by a pair of magnet poles. After the tube was modeled one version of it was built for use in the accelerator. This beam tube was put under a vacuum and the dimensional changes were recorded and compared to the ANSYS predictions. These deflection results were quite close to the predicted numbers and would suggest that the stresses are similar to the predictions as well

  18. Reliability of steam generator tubing

    Energy Technology Data Exchange (ETDEWEB)

    Kadokami, E. [Mitsubishi Heavy Industries Ltd., Hyogo-ku (Japan)

    1997-02-01

    The author presents results on studies made of the reliability of steam generator (SG) tubing. The basis for this work is that in Japan the issue of defects in SG tubing is addressed by the approach that any detected defect should be repaired, either by plugging the tube or sleeving it. However, this leaves open the issue that there is a detection limit in practice, and what is the effect of nondetectable cracks on the performance of tubing. These studies were commissioned to look at the safety issues involved in degraded SG tubing. The program has looked at a number of different issues. First was an assessment of the penetration and opening behavior of tube flaws due to internal pressure in the tubing. They have studied: penetration behavior of the tube flaws; primary water leakage from through-wall flaws; opening behavior of through-wall flaws. In addition they have looked at the question of the reliability of tubing with flaws during normal plant operation. Also there have been studies done on the consequences of tube rupture accidents on the integrity of neighboring tubes.

  19. Microdischarges in DC accelerator tubes

    International Nuclear Information System (INIS)

    Voltage tests on the Daresbury ceramic/titanium accelerator tube have shown that microdischarges play an important role in the conditioning process. It has been found that the voltage onset for microdischarges in a tube is dependent on the surface contamination of the electrodes and the tube geometry (in particular the tube length). This geometrical effect can be related to the trajectories of secondary ions emitted from the electrode surfaces. Sensitive diagnostic techniques have been developed to study the mass and energy distribution of ions emitted along the axis of the tube during these predischarges. The energy distribution of protons (and H- ions) can be related to the origins of the discharges in the tube. Detailed results are presented for a particular tube geometry. (author)

  20. Ultrasonic inspection of tube to tube plate welds

    International Nuclear Information System (INIS)

    To monitor the deterioration of a weld between a tube and tube plate which has been repaired by a repair sleeve inside the tube and brazed at one end to the tube, ultrasound from a crystal at the end of a rod is launched, in the form of Lamb-type waves, into the tube through the braze and allowed to travel along the tube to the weld and be reflected back along the tube. The technique may also be used for the type of heat exchanger in which, during construction, the tubes are welded to the tube plate via external sleeves in which case the ultrasound is used in a similar manner to inspect the sleeve/tube plate weld. an electromagnetic transducer may be used to generate the ultrasound. The ultrasonic head comprising the crystal and an acoustic baffle is mounted on a Perspex (RTM) rod which may be rotated by a stepping motor. Echo signals from the region of deterioration may be isolated by use of a time gate in the receiver. The device primarily detects circumferentially orientated cracks, and may be used in heat exchangers in nuclear power plants. (author)

  1. Radiography students' perceptions of clinical placements - A Nigerian perspective

    International Nuclear Information System (INIS)

    Purpose: To assess undergraduate radiography student perception of clinical placements and to evaluate their clinical learning experiences. Methods: To evaluate student perception of clinical placements, a Likert-scale questionnaire was used to assess clinical practice, the practice-learning environment. One hundred and seventy-eight undergraduate [student] radiographers participated in the study. Results: The students indicated they had adequate and enjoyed their time on the clinical placement. They also indicated the qualified staff was supportive, friendly and approachable. The students were able to achieve their learning outcomes during the placement. However placement venues, according to the students, had inadequate learning resources. No radiographic/medical imaging research findings, whether locally generated or otherwise, were used in clinical practice. Conclusions: Clinical placements had adequate student support. It provided a pleasant learning experience for the students and it enhanced their skills. Staff was willing and available to assist learning. Nevertheless, the training institutions, professional body and clinical placement providers need to make an effort to address inadequate learning resources (e.g. IT, library, study rooms) as well as the non-utilization of radiographic/medical imaging research findings

  2. External ear canal cholesteatoma after ventilation tube insertion and mastoidectomy

    Directory of Open Access Journals (Sweden)

    Đerić Dragoslava

    2012-01-01

    Full Text Available Introduction. Etiopathogenetically, there are two types of chollesteatomas: congenital, and acquired. Numerous theories in the literature try to explain the nature of the disease, however, the question about cholesteatomas remain still unanswered. The aim of the study was to present a case of external ear canal cholesteatoma (EEC developed following microsurgery (ventilation tube insertion and mastoidectomy, as well as to point ant possible mechanisms if its development. Case report. A 16-yearold boy presented a 4-month sense of fullness in the ear and otalgia on the left side. A year before, mastoidectomy and posterior atticotomy were performed with ventilation tube placement due to acute purulent mastoiditis. Diagnosis was based on otoscopy examination, audiology and computed tomography (CT findings. CT showed an obliterative soft-tissue mass completely filled the external ear canal with associated erosion of subjacent the bone. There were squamous epithelial links between the canal cholesteatoma and lateral tympanic membrane surface. They originated from the margins of tympanic membrane incision made for a ventilation tube (VT insertion. The position of VT was good as well as the aeration of the middle ear cavity. The tympanic membrane was intact and of normal appearance without middle ear extension or mastoid involvement of cholesteatoma. Cholesteatoma and ventilation tube were both removed. The patient recovered without complications and shortly audiology revealed hearing improving. Follow-up 2 years later, however, showed no signs of the disease. Conclusion. There could be more than one potential delicate mechanism of developing EEC in the ear with VT insertion and mastoidectomy. It is necessary to perform routine otologic surveillance in all patients with tubes. Affected ear CT scan is very helpful in showing the extent of cholesteatoma and bony defects, which could not be assessed by otoscopic examination alone.

  3. A Risk-Based Sensor Placement Methodology

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Ronald W [ORNL; Kulesz, James J [ORNL

    2006-08-01

    A sensor placement methodology is proposed to solve the problem of optimal location of sensors or detectors to protect population against the exposure to and effects of known and/or postulated chemical, biological, and/or radiological threats. Historical meteorological data are used to characterize weather conditions as wind speed and direction pairs with the percentage of occurrence of the pairs over the historical period. The meteorological data drive atmospheric transport and dispersion modeling of the threats, the results of which are used to calculate population at risk against standard exposure levels. Sensor locations are determined via a dynamic programming algorithm where threats captured or detected by sensors placed in prior stages are removed from consideration in subsequent stages. Moreover, the proposed methodology provides a quantification of the marginal utility of each additional sensor or detector. Thus, the criterion for halting the iterative process can be the number of detectors available, a threshold marginal utility value, or the cumulative detection of a minimum factor of the total risk value represented by all threats.

  4. Parallel node placement method by bubble simulation

    Science.gov (United States)

    Nie, Yufeng; Zhang, Weiwei; Qi, Nan; Li, Yiqiang

    2014-03-01

    An efficient Parallel Node Placement method by Bubble Simulation (PNPBS), employing METIS-based domain decomposition (DD) for an arbitrary number of processors is introduced. In accordance with the desired nodal density and Newton’s Second Law of Motion, automatic generation of node sets by bubble simulation has been demonstrated in previous work. Since the interaction force between nodes is short-range, for two distant nodes, their positions and velocities can be updated simultaneously and independently during dynamic simulation, which indicates the inherent property of parallelism, it is quite suitable for parallel computing. In this PNPBS method, the METIS-based DD scheme has been investigated for uniform and non-uniform node sets, and dynamic load balancing is obtained by evenly distributing work among the processors. For the nodes near the common interface of two neighboring subdomains, there is no need for special treatment after dynamic simulation. These nodes have good geometrical properties and a smooth density distribution which is desirable in the numerical solution of partial differential equations (PDEs). The results of numerical examples show that quasi linear speedup in the number of processors and high efficiency are achieved.

  5. Complications after placement of peritoneal catheter

    Directory of Open Access Journals (Sweden)

    Đurđević-Mirković Tatjana

    2011-01-01

    Full Text Available Introduction. Peritoneal dialysis is one of the modalities used for treatment of end-stage chronic kidney failure. Nowadays, this method is complementary to haemodialysis and renal transplantation. Owing to the rich vascularization of the peritoneum, it is used in the processes of osmosis and diffusion, enabling the removal of uremic material from the body. The procedure includes introduction of peritoneal fluid via the peritoneal catheter. Complications. The catheter is placed through the anterior abdominal wall with its tip positioned in the small pelvis. There are several techniques for catheter placement considered minimally invasive, which, however, may be associated with various complications. These complications can be divided into mechanical (catheter dysfunction, cuff protrusion, hernia, dialysate leaks, visceral perforation and infectious (early peritonitis, exit site or tunnel infection, surgical wounds. In most cases, such complications are rare and can be successfully managed using conservative therapy; however, in some situations severe complications can endanger the life of the patient. On-time recognition of complications, particularly in patients at risk, is of paramount importance for an effective treatment. The development of complications can increase the morbidity and the chance of treatment failure, and therefore transfer to haemodialysis. Conclusion. The preoperative evaluation and determination of the risk factors as well as the early recognition and adequate management of complications are essential in their prevention.

  6. Steam generator tube integrity program

    Energy Technology Data Exchange (ETDEWEB)

    Dierks, D.R.; Shack, W.J. [Argonne National Laboratory, IL (United States); Muscara, J.

    1996-03-01

    A new research program on steam generator tubing degradation is being sponsored by the U.S. Nuclear Regulatory Commission (NRC) at Argonne National Laboratory. This program is intended to support a performance-based steam generator tube integrity rule. Critical areas addressed by the program include evaluation of the processes used for the in-service inspection of steam generator tubes and recommendations for improving the reliability and accuracy of inspections; validation and improvement of correlations for evaluating integrity and leakage of degraded steam generator tubes, and validation and improvement of correlations and models for predicting degradation in steam generator tubes as aging occurs. The studies will focus on mill-annealed Alloy 600 tubing, however, tests will also be performed on replacement materials such as thermally-treated Alloy 600 or 690. An overview of the technical work planned for the program is given.

  7. Sealed ion accelerator tubes (survey)

    International Nuclear Information System (INIS)

    The first publications on developing commercial models of small-scale sealed accelerator tubes in which neutrons are generated appeared in the foreign press in 1954 to 1957; they were very brief and were advertising-oriented. The tubes were designed for neutron logging of oil wells instead of ampule neutron sources (Po + Be, Ra + Be). Later, instruments of this type began to be called neutron tubes from the resulting neutron radiation that they gave off. In Soviet Union a neutron tube was developed in 1958 in connection with the development of the pulsed neutron-neutron method of studying the geological profile of oil wells. At that time the tube developed was intended, in the view of its inventors, to replace standard isotope sources with constant neutron yield. A fairly detailed survey of neutron tubes was made in the studies. 8 refs., 8 figs

  8. Correct placement of the Essure device detected by transvaginal ultrasound at one month predicts correct placement at three months

    Directory of Open Access Journals (Sweden)

    Sarah Mitchell

    2014-02-01

    Conclusions: Correct placement of the micro-insert detected at 1 month is predictive of correct placement at 3 months. TV US at any time from 1 month could be used as the confirmation test for correct placement of the Essure device. This may provide earlier reassurance to women and improve compliance with follow up potentially reducing numbers of unintended pregnancies. The importance of alternative contraception until 3 months post insertion should still be emphasised. [Int J Reprod Contracept Obstet Gynecol 2014; 3(1.000: 75-78

  9. Critical Path-Based Thread Placement for NUMA Systems

    Energy Technology Data Exchange (ETDEWEB)

    Su, C Y; Li, D; Nikolopoulos, D S; Grove, M; Cameron, K; de Supinski, B R

    2011-11-01

    Multicore multiprocessors use a Non Uniform Memory Architecture (NUMA) to improve their scalability. However, NUMA introduces performance penalties due to remote memory accesses. Without efficiently managing data layout and thread mapping to cores, scientific applications, even if they are optimized for NUMA, may suffer performance loss. In this paper, we present algorithms and a runtime system that optimize the execution of OpenMP applications on NUMA architectures. By collecting information from hardware counters, the runtime system directs thread placement and reduces performance penalties by minimizing the critical path of OpenMP parallel regions. The runtime system uses a scalable algorithm that derives placement decisions with negligible overhead. We evaluate our algorithms and runtime system with four NPB applications implemented in OpenMP. On average the algorithms achieve between 8.13% and 25.68% performance improvement compared to the default Linux thread placement scheme. The algorithms miss the optimal thread placement in only 8.9% of the cases.

  10. Lumbar pedicle screw placement: Using only AP plane imaging

    Directory of Open Access Journals (Sweden)

    Anil Sethi

    2012-01-01

    Conclusion: Placement of pedicle screws under fluoroscopic guidance using AP plane imaging alone with tactile guidance is safe, fast, and reliable. However, a good understanding of the radiographic landmarks is a prerequisite.

  11. Are we preparing student nurses for final practice placement?

    Science.gov (United States)

    Morrell, Nicola; Ridgway, Victoria

    The aims of this research were to illuminate student nurses' perceptions of preparedness for final practice placement, and to ascertain factors that supported and hindered preparation for final placement practice. This phenomenological qualitative research was carried out in a UK higher education institution (HEI) with eight adult branch student nurses maintaining written diaries for the first 4 weeks of their final 10-week practice placement. Data were then analysed by means of an interpretive phenomenological approach (IPA). Results showed that students felt ill-prepared for placement. Eight clear themes emerged, including: being used as 'an extra pair of hands'; mentors appearing to treat student practice documentation as unimportant; and high staff expectations. Other themes were: mentor importance; students feeling that they lacked knowledge; and students feeling unsupported and stressed. In conclusion, although students felt that they lacked knowledge and were used as an extra pair of hands, they did show clinical competence. PMID:24851915

  12. Advanced in In Situ Inspection of Automated Fiber Placement Systems

    Science.gov (United States)

    Juarez, Peter D.; Cramer, K. Elliott; Seebo, Jeffrey P.

    2016-01-01

    Automated Fiber Placement (AFP) systems have been developed to help take advantage of the tailorability of composite structures in aerospace applications. AFP systems allow the repeatable placement of uncured, spool fed, preimpregnated carbon fiber tape (tows) onto substrates in desired thicknesses and orientations. This automated process can incur defects, such as overlapping tow lines, which can severely undermine the structural integrity of the part. Current defect detection and abatement methods are very labor intensive, and still mostly rely on human manual inspection. Proposed is a thermographic in situ inspection technique which monitors tow placement with an on board thermal camera using the preheated substrate as a through transmission heat source. An investigation of the concept is conducted, and preliminary laboratory results are presented. Also included will be a brief overview of other emerging technologies that tackle the same issue. Keywords: Automated Fiber Placement, Manufacturing defects, Thermography

  13. Heterocyst placement strategies to maximize growth of cyanobacterial filaments

    CERN Document Server

    Brown, Aidan I

    2012-01-01

    Under conditions of limited fixed-nitrogen, some filamentous cyanobacteria develop a regular pattern of heterocyst cells that fix nitrogen for the remaining vegetative cells. We examine three different heterocyst placement strategies by quantitatively modelling filament growth while varying both external fixed-nitrogen and leakage from the filament. We find that there is an optimum heterocyst frequency which maximizes the growth rate of the filament; the optimum frequency decreases as the external fixed-nitrogen concentration increases but increases as the leakage increases. In the presence of leakage, filaments implementing a local heterocyst placement strategy grow significantly faster than filaments implementing random heterocyst placement strategies. With no extracellular fixed-nitrogen, consistent with recent experimental studies of Anabaena sp. PCC 7120, the modelled heterocyst spacing distribution using our local heterocyst placement strategy is qualitatively similar to experimentally observed patterns...

  14. Alternate tube plugging criteria for steam generator tubes

    Energy Technology Data Exchange (ETDEWEB)

    Cueto-Felgueroso, C.; Aparicio, C.B. [Tecnatom, S.A., Madrid (Spain)

    1997-02-01

    The tubing of the Steam Generators constitutes more than half of the reactor coolant pressure boundary. Specific requirements governing the maintenance of steam generator tubes integrity are set in Plant Technical Specifications and in Section XI of the ASME Boiler and Pressure Vessel Code. The operating experience of Steam Generator tubes of PWR plants has shown the existence of some types of degradatory processes. Every one of these has an specific cause and affects one or more zones of the tubes. In the case of Spanish Power Plants, and depending on the particular Plant considered, they should be mentioned the Primary Water Stress Corrosion Cracking (PWSCC) at the roll transition zone (RTZ), the Outside Diameter Stress Corrosion Cracking (ODSCC) at the Tube Support Plate (TSP) intersections and the fretting with the Anti-Vibration Bars (AVBs) or with the Support Plates in the preheater zone. The In-Service Inspections by Eddy Currents constitutes the standard method for assuring the SG tubes integrity and they permit the monitoring of the defects during the service life of the plant. When the degradation reaches a determined limit, called the plugging limit, the SG tube must be either repaired or retired from service by plugging. Customarily, the plugging limit is related to the depth of the defect. Such depth is typically 40% of the wall thickness of the tube and is applicable to any type of defect in the tube. In its origin, that limit was established for tubes thinned by wastage, which was the predominant degradation in the seventies. The application of this criterion for axial crack-like defects, as, for instance, those due to PWSCC in the roll transition zone, has lead to an excessive and unnecessary number of tubes being plugged. This has lead to the development of defect specific plugging criteria. Examples of the application of such criteria are discussed in the article.

  15. Electron tubes for industrial applications

    Science.gov (United States)

    Gellert, Bernd

    1994-05-01

    This report reviews research and development efforts within the last years for vacuum electron tubes, in particular power grid tubes for industrial applications. Physical and chemical effects are discussed that determine the performance of todays devices. Due to the progress made in the fundamental understanding of materials and newly developed processes the reliability and reproducibility of power grid tubes could be improved considerably. Modern computer controlled manufacturing methods ensure a high reproducibility of production and continuous quality certification according to ISO 9001 guarantees future high quality standards. Some typical applications of these tubes are given as an example.

  16. Dermatology on YouTube

    OpenAIRE

    Boyers, Lindsay N.; Quest, Tyler; Karimkhani, Chante; Connett, Jessica; Dellavalle, Robert P.

    2014-01-01

    YouTube, reaches upwards of six billion users on a monthly basis and is a unique source of information distribution and communication. Although the influence of YouTube on personal health decision-making is well established, this study assessed the type of content and viewership on a broad scope of dermatology related content on YouTube. Select terms (i.e. dermatology, sun protection, skin cancer, skin cancer awareness, and skin conditions) were searched on YouTube. Overall, the results inclu...

  17. YouTube and 'psychiatry'.

    Science.gov (United States)

    Gordon, Robert; Miller, John; Collins, Noel

    2015-12-01

    YouTube is a video-sharing website that is increasingly used to share and disseminate health-related information, particularly among younger people. There are reports that social media sites, such as YouTube, are being used to communicate an anti-psychiatry message but this has never been confirmed in any published analysis of YouTube clip content. This descriptive study revealed that the representation of 'psychiatry' during summer 2012 was predominantly negative. A subsequent smaller re-analysis suggests that the negative portrayal of 'psychiatry' on YouTube is a stable phenomenon. The significance of this and how it could be addressed are discussed. PMID:26755987

  18. Endoscopic Stent Placement in the Palliation of Malignant Biliary Obstruction

    OpenAIRE

    Kim, Jin Hong

    2011-01-01

    Biliary drainage with biliary stent placement is the treatment of choice for palliation in patients with malignant biliary obstruction caused by unresectable neoplasms. In such patients, the endoscopic approach can be initially used with percutaneous radiological intervention. In patients with unresectable malignant distal bile duct obstructions, endoscopic biliary drainage with biliary stent placement has now become the main and least invasive palliative modality, which has been proven to be...

  19. Speeding Up FPGA Placement via Partitioning and Multithreading

    Directory of Open Access Journals (Sweden)

    Cristinel Ababei

    2009-01-01

    placement subproblems are created by partitioning and then processed concurrently by multiple worker threads that are run on multiple cores of the same processor. Our main goal is to investigate the speedup that can be achieved with this simple approach compared to previous approaches that were based on distributed computing. The new hybrid parallel placement algorithm achieves an average speedup of 2.5× using four worker threads, while the total wire length and circuit delay after routing are minimally degraded.

  20. Product placement jako marketingový nástroj

    OpenAIRE

    Kincl, Albert

    2015-01-01

    The aim of this thesis is to describe thoroughly the execution of a product placement process in TV broadcasting with focus on the Czech Republic. So as to analyse product placement as a marketing tool and to introduce its possible forms and current trends. Moreover, to explain the development of this marketing communication and last but not least, discuss the strengths and weaknesses of this specific form of advertisement. Furthermore, questionnaire analysis is used to research the reception...

  1. Effects of Advertising and Product Placement on Television Audiences

    OpenAIRE

    Wilbur, Kenneth C; Michelle S. Goeree; Ridder, Geert

    2009-01-01

    Digital video recorder proliferation and new commercial audience metrics are making television networks’ revenues more sensitive to audience losses from advertising. There is currently limited understanding of how traditional advertising and product placement affectntelevision audiences. We estimate a random coefficients logit model of viewing demand for television programs, wherein time given to advertising and product placement plays a role akinnto the “price” of consuming a program. Our da...

  2. Common ECG Lead Placement Errors. Part II: Precordial Misplacements

    OpenAIRE

    Allison V. Rosen; Sahil Koppikar; Catherine Shaw; Adrian Baranchuk

    2014-01-01

    Background: Electrocardiography is a very useful diagnostic tool. However, errors in placement of ECG leads can create artifacts, mimic pathologies, and hinder proper ECG interpretation. This is the second of a two-part series discussing how to recognize and avoid these errors. Methods: 12-lead ECGs were recorded in a single male healthy subject in his mid 20s. Various precordial lead misplacements were compared to ECG recordings from correct lead placement. Results: Precordial mispla...

  3. Maintaining Sibling Relationships for Children in Foster and Adoptive Placements

    OpenAIRE

    James, Sigrid; Monn, Amy R.; Palinkas, Lawrence A.; Leslie, Laurel K.

    2008-01-01

    To better understand the nature of sibling relationships among children in foster or adoptive placement and the challenges and processes involved in maintaining these relationships, we conducted an exploratory analysis of data collected from semi-structured interviews with caregivers of 14 foster and adopted children in San Diego County. We identified three patterns of placement histories and living situations which appeared to impact the degree of contact maintained with siblings: (1) childr...

  4. Factors influencing radiation therapy student clinical placement satisfaction

    OpenAIRE

    Bridge, Pete; Carmichael, Mary-Ann

    2014-01-01

    Introduction: Radiation therapy students at Queensland University of Technology (QUT) attend clinical placements at five different clinical departments with varying resources and support strategies. This study aimed to determine the relative availability and perceived importance of different factors affecting student support while on clinical placement. The purpose of the research was to inform development of future support mechanisms to enhance radiation therapy students’ experience on clini...

  5. Learning from YouTube [Video Book

    Science.gov (United States)

    Juhasz, Alexandra

    2011-01-01

    YouTube is a mess. YouTube is for amateurs. YouTube dissolves the real. YouTube is host to inconceivable combos. YouTube is best for corporate-made community. YouTube is badly baked. These are a few of the things Media Studies professor Alexandra Juhasz (and her class) learned about YouTube when she set out to investigate what actually happens…

  6. Mixing advertising and editorial content in radio programmes: appreciation and recall of brand placements versus commercials

    NARCIS (Netherlands)

    E.A. van Reijmersdal

    2011-01-01

    Although the literature on brand placement is rapidly evolving, no studies thus far have focused on radio brand placement or on the effects of the combination of brand placement and commercials. Therefore, the present experiment (N = 153) focused on the effects of radio brand placement on liking, cr

  7. PERFORMANCE EVALUATION OF AODV AND DSR IN FEASIBLE AND RANDOM PLACEMENT MODELS

    OpenAIRE

    K. Narasimha Raju; Dr. S.P.Setty

    2014-01-01

    Routing is a challenging issue in Mobile Ad hoc Network to pass the data packets through intermediate hops in an efficient manner. In this paper, Reactive routing protocols namely AODV and DSR are evaluated under the feasible placement and random placement models. Simulation results shows that AODV and DSR are performing better in feasible placement approach comparative to the existing random placement approach.

  8. Factors influencing radiation therapy student clinical placement satisfaction

    International Nuclear Information System (INIS)

    Introduction: Radiation therapy students at Queensland University of Technology (QUT) attend clinical placements at five different clinical departments with varying resources and support strategies. This study aimed to determine the relative availability and perceived importance of different factors affecting student support while on clinical placement. The purpose of the research was to inform development of future support mechanisms to enhance radiation therapy students’ experience on clinical placement. Methods: This study used anonymous Likert-style surveys to gather data from years 1 and 2 radiation therapy students from QUT and clinical educators from Queensland relating to availability and importance of support mechanisms during clinical placements in a semester. Results: The study findings demonstrated student satisfaction with clinical support and suggested that level of support on placement influenced student employment choices. Staff support was perceived as more important than physical resources; particularly access to a named mentor, a clinical educator and weekly formative feedback. Both students and educators highlighted the impact of time pressures. Conclusions: The support offered to radiation therapy students by clinical staff is more highly valued than physical resources or models of placement support. Protected time and acknowledgement of the importance of clinical education roles are both invaluable. Joint investment in mentor support by both universities and clinical departments is crucial for facilitation of effective clinical learning

  9. A Sea-of-Gates Style FPGA Placement Algorithm

    Directory of Open Access Journals (Sweden)

    Kalapi Roy

    1996-01-01

    Full Text Available Field Programmable Gate Arrays (FPGAs have a pre-defined chip boundary with fixed cell locations and routing resources. Placement objectives for flexible architectures (e.g., the standard cell design style such as minimization of chip area do not reflect the primary placement goals for FPGAs. For FPGAs, the layout tools must seek 100% routability within the architectural constraints. Routability and congestion estimates must be made directly based on the demand and availability of routing resources for detailed routing of the particular FPGA. We. present a hierarchical placement approach consisting of two phases: a global placement phase followed by a detailed placement phase. The global placement phase minimizes congestion estimates of the global routing regions and satisfies all constraints at a coarser level. The detailed placer seeks to maximize the routability of the FPGA by considering factors which cause congestion at the detailed routing level and to precisely satisfy all of the constraints. Despite having limited knowledge about the gate level architectural details, we have achieved a 90%reduction in the number of unrouted nets in comparison to an industrial tool (the only other tool developed specifically for this architecture.

  10. Hybrid IR-Gas Heater for Automated Tow Placement

    Science.gov (United States)

    Grenoble, Ray W.; Johnston, Norman J.; Tiwari, S. N.; Marchello, Joseph M.

    1998-01-01

    A hybrid infrared-hot gas heat source has been developed and tested for the NASA Langley Tow Placement Facility. The IR heat source provides supplemental heat to the nip region. The additional heat is intended to reduce the need for conduction heating by the compaction roller, which causes (he roller to stick to the panel surface. Initial bench scale testing was performed to identify the most effective means of focusing IR energy into the nip region. A compact lamp and reflector that placed the lamp as close to the nip point as possible was found to deliver the highest heat flux in the nip region. A prototype heater was installed on the NASA Langley tow placement robot. Panels placed with a 400 C (sticking) compaction roller gave DCB initiation toughness numbers comparable to those reported for autoclave processed panels but were found to have unexpectedly high void contents. Placement with compaction roller temperatures that prevented roller sticking resulted in mode I fracture toughness approximately 70% that reported for autoclave processed panels. The variability in strength among specimens placed with reduced roller temperature was found to be greatly reduced, which implies that use of supplemental nip point heat may improve the robustness of the tow placement process. Use of the IR heat source permitted placement with a compaction roller temperature that would have resulted in negligible interfacial strength with the hot gas torch alone. The roller temperature reductions eliminated the need for the robot operator to attend placement operations.

  11. Nasogastric tube syndrome induced by an indwelling long intestinal tube.

    Science.gov (United States)

    Sano, Naoki; Yamamoto, Masayoshi; Nagai, Kentaro; Yamada, Keiichi; Ohkohchi, Nobuhiro

    2016-04-21

    The nasogastric tube (NGT) has become a frequently used device to alleviate gastrointestinal symptoms. Nasogastric tube syndrome (NTS) is an uncommon but potentially life-threatening complication of an indwelling NGT. NTS is characterized by acute upper airway obstruction due to bilateral vocal cord paralysis. We report a case of a 76-year-old man with NTS, induced by an indwelling long intestinal tube. He was admitted to our hospital for treatment of sigmoid colon cancer. He underwent sigmoidectomy to release a bowel obstruction, and had a long intestinal tube inserted to decompress the intestinal tract. He presented acute dyspnea following prolonged intestinal intubation, and bronchoscopy showed bilateral vocal cord paralysis. The NGT was removed immediately, and tracheotomy was performed. The patient was finally discharged in a fully recovered state. NTS be considered in patients complaining of acute upper airway obstruction, not only with a NGT inserted but also with a long intestinal tube. PMID:27099450

  12. Explosive welding of a tube into a tube sheet

    Science.gov (United States)

    Green, Sheryll C.; Linse, Vonne D.

    1978-10-03

    A cartridge containing an explosive charge is placed within a tube assembled within a tube sheet. The charge is detonated through use of a detonator cord containing a minimum but effective amount of explosive material. The cord is contained inside a tubular shield throughout most of its length within the cartridge. A small length of the cord extends beyond the tubular shield to contact and detonate the explosive charge in its rear portion near the cartridge base. The cartridge base is provided of substantial mass and thickness in respect to side and front walls of the cartridge to minimize bulging beyond the rear face of the tube sheet. For remote activation an electrically activated detonator of higher charge density than the cord is attached to the cord at a location spaced from the tube sheet, cartridge and tube.

  13. Jose Cabrera (Zorita) tube examination

    International Nuclear Information System (INIS)

    Jose Cabrera (Zorita) tube examination procedures are discussed. This plant continues to use phosphate water chemistry (sodium/phosphate ratio = 2.1). Three hot leg tube segments were pulled from the Jose Cabera (Zorita) plant in 1985. One tube had a field EC indication on the OD at the first tube support plate and the other two had field EC indications on their ID about 3 inches above the bottom of the tube sheet. All three tubes were initially sent to Battelle for preliminary NDE and decontamination. Segments of two tubes were sent to Westinghouse for destructive examination. The results of the laboratory eddy current and radiographic examinations are given. The results of the visual examinations are also given. The tube with OD indications was destructively examined and shallow intergranular pitting and intergranular attack, up to 2 mils deep, were found on the OD in the tube sheet region. Local areas of IGA, up to 5 mils deep, were found on the OD within the tube support plate region. A summary of this information together with supporting micrographs is given. It was hypothesized that a caustic crevice environment was the cause of this mild degradation. Shallow areas of thinning or wastage, up to 3 mils, were found just above the top of the tube sheet in the sludge pile region. Even more shallow wastage was found at the edges of support plate locations. This wastage is believed to be the remnant of early plant chemistry when a higher sodium/phosphate ratio and higher phosphate concentration were allowed

  14. Piezoelectric Rotary Tube Motor

    Science.gov (United States)

    Fisher, Charles D.; Badescu, Mircea; Braun, David F.; Culhane, Robert

    2011-01-01

    A custom rotary SQUIGGLE(Registered TradeMark) motor has been developed that sets new benchmarks for small motor size, high position resolution, and high torque without gear reduction. Its capabilities cannot be achieved with conventional electromagnetic motors. It consists of piezoelectric plates mounted on a square flexible tube. The plates are actuated via voltage waveforms 90 out of phase at the resonant frequency of the device to create rotary motion. The motors were incorporated into a two-axis postioner that was designed for fiber-fed spectroscopy for ground-based and space-based projects. The positioner enables large-scale celestial object surveys to take place in a practical amount of time.

  15. Chapter 11. Digestive tube

    International Nuclear Information System (INIS)

    Exploration of the digestive tube by radioactive tracers relates mainly to the functional study of certain digestion or absorption troubles. The tracer absorbed by the digestibe system was followed by counting of the stools, successive measurements of the plasma radioactivity, measurements of urinary elimination or uptake on a storage organ such as the liver in the case of vitamin B12, measurement of whole-body radioactivity for vitamin B12 and iron. The different isotopic techniques used to study intestinal absorption of lipids, proteins and aminoacids, vitamin B 12 and iron were described and their contribution to the detection of exudative enteropathies and digestive haemorrhage was shown. It was pointed out that the stomach is one of the organs most accessible to standard exploration techniques. The role of sup(99m)Tc in both the morphological exploration of stomach and the study of gastric secretion, of 51Cr and 129Cs in the study of gastric evacuation were demonstrated

  16. Effects of a Foster Parent Training Intervention on Placement Changes of Children in Foster Care

    OpenAIRE

    Price, Joseph M.; Chamberlain, Patricia; LANDSVERK, JOHN; Reid, John; Leve, Leslie; Laurent, Heidemarie

    2008-01-01

    Placement disruptions undermine efforts of child welfare agencies to promote safety, permanency, and child well-being. Child behavior problems significantly contribute to placement changes. The aims of this investigation were to examine the impact of a foster parent training and support intervention (KEEP) on placement changes and to determine whether the intervention mitigates placement disruption risks associated with children's placement histories. The sample consisted of 700 families with...

  17. NEI You Tube Videos: Amblyopia

    Medline Plus

    Full Text Available ... Vision Research & Ophthalmology (DIVRO) Student Training Programs NEI Home About NEI Health Information News and Events Grants ... Research at NEI Education Programs Training and Jobs Home > NEI YouTube Videos > NEI YouTube Videos: Amblyopia NEI ...

  18. Gastrostomy feeding tube - pump - child

    Science.gov (United States)

    Feeding - gastrostomy tube - pump; G-tube - pump; Gastrostomy button - pump; Bard Button - pump; MIC-KEY - pump ... Gather supplies: Feeding pump (electronic or battery powered) Feeding set that matches the feeding pump (includes a feeding bag, drip chamber, roller clamp, ...

  19. Flaming on YouTube

    NARCIS (Netherlands)

    Moor, Peter J.; Heuvelman, Ard; Verleur, Ria

    2010-01-01

    In this explorative study, flaming on YouTube was studied using surveys of YouTube users. Flaming is defined as displaying hostility by insulting, swearing or using otherwise offensive language. Three general conclusions were drawn. First, although many users said that they themselves do not flame,

  20. Characterization of tube support alloys

    International Nuclear Information System (INIS)

    The involvement and relationship of carbon steel corrosion products in the tube denting phenomenon promoted an intensive research effort to: 1) understand, reproduce, and arrest the denting process, and 2) evaluate alternative tube support materials to provide additional corrosion resistance. The paper summarizes a corrosion testing program for the verification of type 405 stainless steel under acid or all volatile treatment conditions

  1. Bilamellar type streak tube design

    International Nuclear Information System (INIS)

    In ICF experiments, high dynamic range, high temporal and spatial resolution X-ray streak camera is a necessary diagnosis tool. To meet this requirement, a streak tube which uses bilamellar electrode lens and quadrupolar lens to focus electrons has been designed. This tube uses different ways to focus electrons in temporal axis and spatial axis. In temporal axis, it uses two effectively. The spatial resolution of this tube reaches 40 lp/mm even at the edge of photocathode, the temporal resolution is about 10 ps and the effective length of photocathode is 20 mm. Using different focusing ways in temporal and spatial directions, the tube will not focus electrons to a small spot, compared with conventional rotary and symmetric tubes, and thus its space charge effect is much weaker, and dynamic range is much larger. (authors)

  2. The rotating tubing hanger system

    International Nuclear Information System (INIS)

    Beam pump systems are among the most cost efficient artificial lift systems in the industry, assuming a long run time between pulling jobs to repair tubing failures caused by rod wear. The tubing string represents the second largest investment in the well. The longer the period of time the well can be kept on-line and producing between pulling jobs, the more efficient and cost effective is the beam pump system. This paper describes in detail the conception, development and implementation of a new system that extends tubing life on rod pumped wells. The system uses a very simple concept; rotate the tubing string to extend the length of time between tubing failures and the resultant pulling jobs. The system is powered directly from the walking beam and requires no additional power source; nor does the system use any additional energy

  3. Consideration of alternative designs for a Percutaneous Endoscopic Gastrostomy feeding tube

    Science.gov (United States)

    Yerrabolu, Santosh Rohit

    and/or 3-D printing are proposed for manufacturing of the product. Radio Frequency Glow Discharge Treatment is proposed as a sterilizing technique. Further investigations suggested are pilot Finite Element Analysis of the biomechanics involved and the subsequent validation and optimization of the conceptual designs apart from pursuing materials performance evaluation with stomach tissue-skin composites and long-term placement of tubes/ catheters at variable surface roughness profiles, filler materials, modulus of rigidities, tube-pull-through speeds and tissue stretch ratios.

  4. Ozone production of hollow-needle-to-mesh negative corona discharge enhanced by dielectric tube on the needle electrode

    International Nuclear Information System (INIS)

    For the hollow-needle-to-mesh negative corona discharge in air, we studied the effect of placing the dielectric tube on the needle electrode and the effect of various positions of the end of this tube with respect to the tip of the needle electrode on the concentration of ozone produced by the discharge, the ozone production yield and the discharge V–A characteristics. We found that the placement of the dielectric tube on the needle electrode with a suitable position of this tube end with respect to the tip of the needle electrode for a particular discharge power led to a more than fourfold increase in the concentration of ozone produced by the discharge and also, for a constant airflow, the ozone production yield. (fast track communication)

  5. HF electronic tubes. Technologies, grid tubes and klystrons

    International Nuclear Information System (INIS)

    This article gives an overview of the basic technologies of electronic tubes: cathodes, electronic optics, vacuum and high voltage. Then the grid tubes, klystrons and inductive output tubes (IOT) are introduced. Content: 1 - context and classification; 2 - electronic tube technologies: cathodes, electronic optics, magnetic confinement (linear tubes), periodic permanent magnet (PPM) focussing, collectors, depressed collectors; 3 - vacuum technologies: vacuum quality, surface effects and interaction with electrostatic and RF fields, secondary emission, multipactor effect, thermo-electronic emission; 4 - grid tubes: operation of a triode, tetrodes, dynamic operation and classes of use, 'common grid' and 'common cathode' operation, ranges of utilisation and limitations, operation of a tetrode on unadjusted load, lifetime of a tetrode, uses of grid tubes; 5 - klystrons: operation, impact of space charge, multi-cavity klystrons, interaction efficiency, extended interaction klystrons, relation between interaction efficiency, perveance and efficiency, ranges of utilization and power limitations, multi-beam klystrons and sheet beam klystrons, operation on unadjusted load, klystron band pass and lifetime, uses; 6 - IOT: principle of operation, ranges of utilisation and limitations, interaction efficiency and depressed collector IOT, IOT lifetime and uses. (J.S.)

  6. Clinical placements in mental health: a literature review.

    Science.gov (United States)

    Happell, Brenda; Gaskin, Cadeyrn J; Byrne, Louise; Welch, Anthony; Gellion, Stephen

    2015-01-01

    Gaining experience in clinical mental health settings is central to the education of health practitioners. To facilitate the ongoing development of knowledge and practice in this area, we performed a review of the literature on clinical placements in mental health settings. Searches in Academic Search Complete, CINAHL, Medline and PsycINFO databases returned 244 records, of which 36 met the selection criteria for this review. Five additional papers were obtained through scanning the reference lists of those papers included from the initial search. The evidence suggests that clinical placements may have multiple benefits (e.g. improving students' skills, knowledge, attitudes towards people with mental health issues and confidence, as well as reducing their fears and anxieties about working in mental health). The location and structure of placements may affect outcomes, with mental health placements in non-mental health settings appearing to have minimal impact on key outcomes. The availability of clinical placements in mental health settings varies considerably among education providers, with some students completing their training without undertaking such structured clinical experiences. Students have generally reported that their placements in mental health settings have been positive and valuable experiences, but have raised concerns about the amount of support they received from education providers and healthcare staff. Several strategies have been shown to enhance clinical placement experiences (e.g. providing students with adequate preparation in the classroom, implementing learning contracts and providing clinical supervision). Educators and healthcare staff need to work together for the betterment of student learning and the healthcare professions. PMID:25397660

  7. Conditioning and breakdown phenomena in accelerator tubes

    International Nuclear Information System (INIS)

    Important breakdown mechanisms in accelerator tubes are reviewed, and discharge phenomena in NEC tubes are deduced from the surface appearance of the electrodes and insulators of a used tube. Microphotos of these surfaces are shown

  8. Eddy current signal comparison for tube identification

    Science.gov (United States)

    Glass, S. W.; Vojvodic, R.

    2015-03-01

    Inspection of nuclear power plant steam generator tubes is required to justify continued safe plant operation. The steam generators consist of thousands of tubes with nominal diameters of 15 to 22mm, approximately 1mm wall thickness, and 20 to 30m in length. The tubes are inspected by passing an eddy current probe through the tubes from tube end to tube end. It is critical to know exactly which tube identification (row and column) is associated with each tube's data. This is controlled by a precision manipulator that provides the tube ID to the eddy current system. Historically there have been some instances where the manipulator incorrectly reported the tube ID. This can have serious consequences including lack of inspection of a tube, or if a pluggable indication is detected, the tube is likely to be mis-plugged thereby risking a primary to secondary leak.

  9. Eddy current signal comparison for tube identification

    International Nuclear Information System (INIS)

    Inspection of nuclear power plant steam generator tubes is required to justify continued safe plant operation. The steam generators consist of thousands of tubes with nominal diameters of 15 to 22mm, approximately 1mm wall thickness, and 20 to 30m in length. The tubes are inspected by passing an eddy current probe through the tubes from tube end to tube end. It is critical to know exactly which tube identification (row and column) is associated with each tube's data. This is controlled by a precision manipulator that provides the tube ID to the eddy current system. Historically there have been some instances where the manipulator incorrectly reported the tube ID. This can have serious consequences including lack of inspection of a tube, or if a pluggable indication is detected, the tube is likely to be mis-plugged thereby risking a primary to secondary leak

  10. Vidicon storage tube electrical input/output

    Science.gov (United States)

    Lipoma, P.

    1972-01-01

    Electrical data storage tube is assembled from standard vidicon tube using conventional amplification and control circuits. Vidicon storage tube is simple, inexpensive and has an erase and preparation time of less than 5 microseconds.

  11. Vacuum distribution in the Vivitron accelerating tube

    International Nuclear Information System (INIS)

    Outgassing and conductance performances of HVEC type accelerating tube sections are calculated, measured and discussed. Based on the proposed Vivitron terminal stripping arrangement and tube pumping system, the vacuum pressure distribution along the accelerating tube has been determined

  12. Heterocyst placement strategies to maximize the growth of cyanobacterial filaments

    International Nuclear Information System (INIS)

    Under conditions of limited fixed-nitrogen, some filamentous cyanobacteria develop a regular pattern of heterocyst cells that fix nitrogen for the remaining vegetative cells. We examine three different heterocyst placement strategies by quantitatively modelling filament growth while varying both external fixed-nitrogen and leakage from the filament. We find that there is an optimum heterocyst frequency which maximizes the growth rate of the filament; the optimum frequency decreases as the external fixed-nitrogen concentration increases but increases as the leakage increases. In the presence of leakage, filaments implementing a local heterocyst placement strategy grow significantly faster than filaments implementing random heterocyst placement strategies. With no extracellular fixed-nitrogen, consistent with recent experimental studies of Anabaena sp. PCC 7120, the modelled heterocyst spacing distribution using our local heterocyst placement strategy is qualitatively similar to experimentally observed patterns. As external fixed-nitrogen is increased, the spacing distribution for our local placement strategy retains the same shape, while the average spacing between heterocysts continuously increases. (paper)

  13. Cumulative risks of foster care placement for Danish children.

    Directory of Open Access Journals (Sweden)

    Peter Fallesen

    Full Text Available Although recent research suggests that the cumulative risk of foster care placement is far higher for American children than originally suspected, little is known about the cumulative risk of foster care placement in other countries, which makes it difficult to gauge the degree to which factor foster care placement is salient in other contexts. In this article, we provide companion estimates to those provided in recent work on the US by using Danish registry data and synthetic cohort life tables to show how high and unequally distributed the cumulative risk of foster care placement is for Danish children. Results suggest that at the beginning of the study period (in 1998 the cumulative risk of foster care placement for Danish children was roughly in line with the risk for American children. Yet, by the end of the study period (2010, the risk had declined to half the risk for American children. Our results also show some variations by parental ethnicity and sex, but these differences are small. Indeed, they appear quite muted relative to racial/ethnic differences in these risks in the United States. Last, though cumulative risks are similar between Danish and American children (especially at the beginning of the study period, the age-specific risk profiles are markedly different, with higher risks for older Danish children than for older American children.

  14. Electronic components, tubes and transistors

    CERN Document Server

    Dummer, G W A

    1965-01-01

    Electronic Components, Tubes and Transistors aims to bridge the gap between the basic measurement theory of resistance, capacitance, and inductance and the practical application of electronic components in equipments. The more practical or usage aspect of electron tubes and semiconductors is given emphasis over theory. The essential characteristics of each main type of component, tube, and transistor are summarized. This book is comprised of six chapters and begins with a discussion on the essential characteristics in terms of the parameters usually required in choosing a resistor, including s

  15. PEG tubes: dealing with complications.

    Science.gov (United States)

    Malhi, Hardip; Thompson, Rosie

    A percutaneous endoscopic gastronomy tube can be used to deliver nutrition, hydration and medicines directly into the patient's stomach. Patients will require a tube if they are unable to swallow safely, putting them at risk of aspiration of food, drink and medicines into their lungs. It is vital that nurses are aware of the complications that may arise when caring for a patient with a PEG tube. It is equally important that nurses know how to deal with these complications or from where tc seek advice. This article provides a quick troubleshooting guide to help nurses deal with complications that can arise with PEG feeding. PMID:26016095

  16. Common ECG Lead Placement Errors. Part I: Limb Lead Reversals

    Directory of Open Access Journals (Sweden)

    Allison V. Rosen

    2015-10-01

    Full Text Available Background: Electrocardiography (ECG is a very useful diagnostic tool. However, errors in placement of ECG leads can create artifacts, mimic pathologies, and hinder proper ECG interpretation. It is important for members of the health care team to be able to recognize the common patterns resulting from lead placement errors. Methods: 12-lead ECGs were recorded in a single male healthy subject in his mid 20s. Six different limb lead reversals were compared to ECG recordings from correct lead placement. Results: Classic ECG patterns were observed when leads were reversed. Methods of discriminating these ECG patterns from true pathologic findings were described. Conclusion: Correct recording and interpretation of ECGs is key to providing optimal patient care. It is therefore crucial to be able to recognize common ECG patterns that are indicative of lead reversals.

  17. Optimal placement of excitations and sensors by simulated annealing

    Science.gov (United States)

    Salama, Moktar; Bruno, R.; Chen, G.-S.; Garba, J.

    1989-01-01

    The optimal placement of discrete actuators and sensors is posed as a combinatorial optimization problem. Two examples for truss structures were used for illustration; the first dealt with the optimal placement of passive dampers along existing truss members, and the second dealt with the optimal placement of a combination of a set of actuators and a set of sensors. Except for the simplest problems, an exact solution by enumeration involves a very large number of function evaluations, and is therefore computationally intractable. By contrast, the simulated annealing heuristic involves far fewer evaluations and is best suited for the class of problems considered. As an optimization tool, the effectiveness of the algorithm is enhanced by introducing a number of rules that incorporate knowledge about the physical behavior of the problem. Some of the suggested rules are necessarily problem dependent.

  18. Hierarchical planning for a surface mounting machine placement

    Institute of Scientific and Technical Information of China (English)

    曾又姣; 马登哲; 金烨; 严隽琪

    2004-01-01

    For a surface mounting machine (SMM) in printed circuit board (PCB) assembly line, there are four problems, e.g. CAD data conversion, nozzle selection, feeder assignment and placement sequence determination. A hierarchical planning for them to maximize the throughput rate of an SMM is presented here. To minimize set-up time, a CAD data conversion system was first applied that could automatically generate the data for machine placement from CAD design data files. Then an effective nozzle selection approach was implemented to minimize the time of nozzle changing. And then, to minimize picking time, an algorithm for feeder assignment was used to make picking multiple components simultaneously as much as possible. Finally, in order to shorten pick-and-place time, a heuristic algorithm was used to determine optimal component placement sequence according to the decided feeder positions. Experiments were conducted on a four head SMM. The experimental results were used to analyse the assembly line performance.

  19. Advances in in situ inspection of automated fiber placement systems

    Science.gov (United States)

    Juarez, Peter D.; Cramer, K. Elliott; Seebo, Jeffrey P.

    2016-05-01

    Automated Fiber Placement (AFP) systems have been developed to help take advantage of the tailorability of composite structures in aerospace applications. AFP systems allow the repeatable placement of uncured, spool fed, preimpregnated carbon fiber tape (tows) onto substrates in desired thicknesses and orientations. This automated process can incur defects, such as overlapping tow lines, which can severely undermine the structural integrity of the part. Current defect detection and abatement methods are very labor intensive, and still mostly rely on human manual inspection. Proposed is a thermographic in situ inspection technique which monitors tow placement with an on board thermal camera using the preheated substrate as a through transmission heat source. An investigation of the concept is conducted, and preliminary laboratory results are presented. Also included will be a brief overview of other emerging technologies that tackle the same issue.

  20. Commercial breaks vs. product placement: what works for young consumers?

    Directory of Open Access Journals (Sweden)

    Ovidiu Mircea ŢIEREAN

    2015-06-01

    Full Text Available The article presents the results of a quantitative marketing research conducted on young consumers from Braşov County regarding their perceptions about commercial breaks and product placement during the most important reality shows. The purpose of this research is to determine to what extent young consumers watch the evening shows and to what extent they remember the brands advertised during commercial breaks and product placement within the shows. For young consumers, the evening shows are time spent with family and friends. A large majority do not watch the commercial breaks and they mostly remember brands that also practice product placement during the shows. There is a direct corelation between numbers of shows watched and the percentage of consumers who remember the main sponsors for evening shows.

  1. At the Roots of Product Placement: The Mere Exposure Effect

    Directory of Open Access Journals (Sweden)

    Stefano Ruggieri

    2013-05-01

    Full Text Available The present study aims to analyze the effect of product placement on attitude change and takes into consideration psychological models of the mere exposure effect. A sample of high school students watched an excerpt from two widely-distributed movies in which several products were shown by using the technique known as product placement. The results indicate that students who saw the commercial brand liked the products more than those who didn’t see it. This effect, in line with the literature on the product placement effect, seems to be independent from the recognition of the brand in the movie excerpt. This study also shows that, in the high involvement condition, one exposure is enough to produce a positive attitude toward the brand.

  2. Common ECG Lead Placement Errors. Part II: Precordial Misplacements

    Directory of Open Access Journals (Sweden)

    Allison V. Rosen

    2014-10-01

    Full Text Available Background: Electrocardiography is a very useful diagnostic tool. However, errors in placement of ECG leads can create artifacts, mimic pathologies, and hinder proper ECG interpretation. This is the second of a two-part series discussing how to recognize and avoid these errors. Methods: 12-lead ECGs were recorded in a single male healthy subject in his mid 20s. Various precordial lead misplacements were compared to ECG recordings from correct lead placement. Results: Precordial misplacements caused classical changes in ECG patterns. Techniques of differentiating these ECG patterns from true pathological findings were described. Conclusion: As in Part I of this series, recognition and interpretation of common ECG placement errors is critical in providing optimal patient care.

  3. Inferior vena cava filter placement for the prevention of pulmonary embolism and the complications related to the filter placement

    International Nuclear Information System (INIS)

    Objective: To investigate the effects of inferior vena cava (IVC) filter placement for the prevention of fatal pulmonary embolism and to discuss the management of complications related to the filter placement. Methods: Seventy patients with proved deep vein thrombosis of lower extremity underwent inferior vena cava filter placement.A total of 72 IVC filters were implanted,which included 20 Trap Ease filters, 31 Vena Tech filters, 13 retrievable OptEaseTM filters and 8 Tempo II filters. One filter was deployed above the orifice of renal vein and the remaining 71 were deployed below the orifice of renal vein. Results: All the patients were followed up for 8-72 months after the procedure. During the follow-up period no fatal pulmonary embolism occurred except that some complications related to the filter placement occurred in 6 cases. Conclusion: Inferior vena cava filter placement can effectively prevent the occurrence of pulmonary embolism. Of course, this treatment should be strictly applied according to the indications. (authors)

  4. Life cycle assessment for dredged sediment placement strategies.

    Science.gov (United States)

    Bates, Matthew E; Fox-Lent, Cate; Seymour, Linda; Wender, Ben A; Linkov, Igor

    2015-04-01

    Dredging to maintain navigable waterways is important for supporting trade and economic sustainability. Dredged sediments are removed from the waterways and then must be managed in a way that meets regulatory standards and properly balances management costs and risks. Selection of a best management alternative often results in stakeholder conflict regarding tradeoffs between local environmental impacts associated with less expensive alternatives (e.g., open water placement), more expensive measures that require sediment disposal in constructed facilities far away (e.g., landfills), or beneficial uses that may be perceived as risky (e.g., beach nourishment or island creation). Current sediment-placement decisions often focus on local and immediate environmental effects from the sediment itself, ignoring a variety of distributed and long-term effects from transportation and placement activities. These extended effects have implications for climate change, resource consumption, and environmental and human health, which may be meaningful topics for many stakeholders not currently considered. Life-Cycle Assessment (LCA) provides a systematic and quantitative method for accounting for this wider range of impacts and benefits across all sediment management project stages and time horizons. This paper applies a cradle-to-use LCA to dredged-sediment placement through a comparative analysis of potential upland, open water, and containment-island placement alternatives in the Long Island Sound region of NY/CT. Results suggest that, in cases dealing with uncontaminated sediments, upland placement may be the most environmentally burdensome alternative, per ton-kilometer of placed material, due to the emissions associated with diesel fuel combustion and electricity production and consumption required for the extra handling and transportation. These results can be traded-off with the ecosystem impacts of the sediments themselves in a decision-making framework. PMID:25553545

  5. NEI You Tube Videos: Amblyopia

    Medline Plus

    Full Text Available ... Funding Division of Extramural Affairs Division of Extramural Science Programs Funding Opportunity Announcements Funding Mechanisms Supported by ... Amaurosis Low Vision Refractive Errors Retinopathy of Prematurity Science Spanish Videos Webinars NEI YouTube Videos: Amblyopia NEI ...

  6. drift tube for linear accelerator

    CERN Multimedia

    A drift tube from the Linac 1. This was the first tank of the linear accelerator Linac1, the injection system for the Proton Synchrotron, It ran for 34 years (1958 - 1992). Protons entered at the far end and were accelerated between the copper drift tubes by an oscillating electromagnetic field. The field flipped 200 million times a second (200 MHz) so the protons spent 5 nanoseconds crossing a drift tube and a gap. Moving down the tank, the tubes and gaps had to get longer as the protons gained speed. The tank accelerated protons from 500 KeV to 10 MeV. Linac1 was also used to accelerate deutrons and alpha particles for the Intersecting Storage Rings and oxygen and sulpher ions for the Super Proton Synchrotron heavy ion programme.

  7. NEI You Tube Videos: Amblyopia

    Medline Plus

    Full Text Available ... Funding Division of Extramural Activities Division of Extramural Science Programs Funding Opportunity Announcements Funding Mechanisms Supported by ... Amaurosis Low Vision Refractive Errors Retinopathy of Prematurity Science Spanish Videos Webinars NEI YouTube Videos: Amblyopia NEI ...

  8. Lunar Core Drive Tubes Summary

    Data.gov (United States)

    National Aeronautics and Space Administration — Contains a brief summary and high resolution imagery from various lunar rock and core drive tubes collected from the Apollo and Luna missions to the moon.

  9. NEI You Tube Videos: Amblyopia

    Medline Plus

    Full Text Available ... NEI All Research at NEI Office of the Scientific Director Office of the Clinical Director Education Programs ... Amaurosis Low Vision Refractive Errors Retinopathy of Prematurity Science Spanish Videos Webinars NEI YouTube Videos: Amblyopia NEI ...

  10. NEI You Tube Videos: Amblyopia

    Medline Plus

    Full Text Available ... Amaurosis Low Vision Refractive Errors Retinopathy of Prematurity Science Spanish Videos Webinars NEI YouTube Videos: Amblyopia NEI ... questions and comments to the NEI Office of Science Communications, Public Liaison, and Education. Technical questions about ...

  11. Lattice tube model of proteins

    OpenAIRE

    Banavar, Jayanth R.; Cieplak, Marek; Maritan, Amos

    2004-01-01

    We present a new lattice model for proteins that incorporates a tube-like anisotropy by introducing a preference for mutually parallel alignments in the conformations. The model is demonstrated to capture many aspects of real proteins.

  12. NEI You Tube Videos: Amblyopia

    Medline Plus

    Full Text Available ... Eye Disease Dilated Eye Exam Dry Eye For Kids Glaucoma Healthy Vision Tips Leber Congenital Amaurosis Low Vision Refractive Errors Retinopathy of Prematurity Science Spanish Videos Webinars NEI YouTube Videos: Amblyopia NEI ...

  13. Optimal PMU Placement By Improved Particle Swarm Optimization

    DEFF Research Database (Denmark)

    Rather, Zakir Hussain; Liu, Leo; Chen, Zhe;

    2013-01-01

    This paper presents an improved method of binary particle swarm optimization (IBPSO) technique for optimal phasor measurement unit (PMU) placement in a power network for complete system observability. Various effective improvements have been proposed to enhance the efficiency and convergence rate...... of conventional particle swarm optimization method. The proposed method of IBPSO ensures optimal PMU placement with and without consideration of zero injection measurements. The proposed method has been applied to standard test systems like 17 bus, IEEE 24-bus, IEEE 30-bus, New England 39-bus, IEEE...

  14. Manufacturing of Smart Structures Using Fiber Placement Manufacturing Processes

    Science.gov (United States)

    Thomas, Matthew M.; Glowasky, Robert A.; McIlroy, Bruce E.; Story, Todd A.

    1996-01-01

    Smart structures research and development, with the ultimate aim of rapid commercial and military production of these structures, are at the forefront of the Synthesis and Processing of Intelligent Cost-Effective Structures (SPICES) program. As part of this ARPA-sponsored program, MDA-E is using fiber placement processes to manufacture integrated smart structure systems. These systems comprise advanced composite structures with embedded fiber optic sensors, shape memory alloys, piezoelectric actuators, and miniature accelerometers. Cost-effective approaches and solutions to smart material synthesis in the fiber-placement process, based upon integrated product development, are discussed herein.

  15. Optimal Placement of Phasor Measurement Units with New Considerations

    DEFF Research Database (Denmark)

    Su, Chi; Chen, Zhe

    2010-01-01

    factors is taken into account in the proposed PMU placement method in this paper, which is the number of adjacent branches to the PMU located buses. The concept of full topological observability is adopted and a version of binary particle swarm optimization (PSO) algorithm is utilized. Results from the......Conventional phasor measurement unit (PMU) placement methods normally use the number of PMU installations as the objective function which is to be minimized. However, the cost of one installation of PMU is not always the same in different locations. It depends on a number of factors. One of these...

  16. Automated Tow Placement Processing and Characterization of Composites

    Science.gov (United States)

    Prabhakaran, R.

    2004-01-01

    The project had one of the initial objectives as automated tow placement (ATP), in which a robot was used to place a collimated band of pre-impregnated ribbons or a wide preconsolidated tape onto a tool surface. It was proposed to utilize the Automated Tow Placement machine that was already available and to fabricate carbon fiber reinforced PEEK (polyether-ether-ketone) matrix composites. After initial experiments with the fabrication of flat plates, composite cylinders were to be fabricated. Specimens from the fabricated parts were to be tested for mechanical characterization. A second objective was to conduct various types of tests for characterizing composite specimens cured by different fabrication processes.

  17. Paid Placement: Advertising and Search on the Internet

    OpenAIRE

    Yongmin Chen; Chuan He

    2006-01-01

    Paid placement, where advertisers bid payments to a search engine to have their products appear next to keyword search results, has emerged as a predominant form of advertising on the Internet. This paper studies a product-di¤erentiation model where consumers are initially uncertain about the desirability of and valuation for di¤erent sellers? products, and can learn about a seller?s product through a costly search. In equilibrium, a seller bids more for placement when his product is more rel...

  18. The YouTube reader

    OpenAIRE

    2009-01-01

    YouTube has come to epitomize the possibilities of digital culture. With more than seventy million unique users a month and approximately eighty million videos online, this brand-name video distribution platform holds the richest repository of popular culture on the Internet. As the fastest growing site in the history of the Web, YouTube promises endless new opportunities for amateur video, political campaigning, entertainment formats, and viral marketing—a clip culture that has seemed to out...

  19. Duplication of the fallopian tube

    Directory of Open Access Journals (Sweden)

    R Narayanan

    2008-01-01

    Full Text Available Hysterosalpingography accurately delineates the uterine and tubal lumen, and hence is routinely performed for the evaluation of infertility.We observed a case of infertility where uterine cavity was normal but fallopian tubes were bifurcated at the ampullary region. Mullerian duct anomalies are reported in literature, but maldevelopment of fallopian tube in isolation is rare. This abnormality can present as infertility, ectopic pregnancy, in association with urinary tract anomalies or as failure of sterilisation method.

  20. Eddy current tube testing unit

    International Nuclear Information System (INIS)

    The unit described can check a wide variety of tubes in quick succession and its modular design gives it a high degree of versability. Suitably defined working conditions and specific fittings enable most of the faults encountered in the manufacture of a tube to be detected. By appropriate means of selection based on signal amplitude, phase and frequency analyses it is possible to adapt selection criteria to the seriousness of the different categories of defect

  1. Energy dissipation in circular tube

    OpenAIRE

    A.D. Girgidov

    2012-01-01

    Energy dissipation distribution along the circular tube radius is important in solving such problems as calculation of heat transfer by the air flow through building envelope; calculation of pressure loss in spiral flows; calculation of cyclones with axial and tangential supply of dust-containing gas.Two types of one-dimensional radially axisymmetric flows in circular tube were considered: axial flow and rotation about the axis (Rankine vortex). Relying on two- and four-layer description of a...

  2. Test-tube Baby Option

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    As China’s first test tube baby celebrates her 20th birthday,the country is moving to improve IVF procedures I feel just like a normal person,despite being a little bit hi-tech,"said China’s first test-tube baby Zheng Mengzhu at her birthday party in Beijing. Zheng,born on March 10,1988 in the No.3 Hospital affiliated to the Peking University of Medical Sciences,made a trip

  3. Tube-in-shell heat exchangers

    International Nuclear Information System (INIS)

    Tube-in-shell heat exchangers normally comprise a bundle of parallel tubes within a shell container, with a fluid arranged to flow through the tubes in heat exchange with a second fluid flowing through the shell. The tubes are usually end supported by the tube plates that separate the two fluids, and in use the tube attachments to the tube plates and the tube plates can be subject to severe stress by thermal shock and frequent inspection and servicing are required. Where the heat exchangers are immersed in a coolant such as liquid Na such inspection is difficult. In the arrangement described a longitudinally extending central tube is provided incorporating axially spaced cylindrical tube plates to which the opposite ends of the tubes are attached. Within this tube there is a tubular baffle that slidably seals against the wall of the tube between the cylindrical tube plates to define two co-axial flow ducts. These ducts are interconnected at the closed end of the tube by the heat exchange tubes and the baffle comprises inner and outer spaced walls with the interspace containing Ar. The baffle is easily removable and can be withdrawn to enable insertion of equipment for inspecting the wall of the tube and tube attachments and to facilitate plugging of defective tubes. Cylindrical tube plates are believed to be superior for carrying pressure loads and resisting the effects of thermal shock. Some protection against thermal shock can be effected by arranging that the secondary heat exchange fluid is on the tube side, and by providing a thermal baffle to prevent direct impingement of hot primary fluid on to the cylindrical tube plates. The inner wall of the tubular baffle may have flexible expansible region. Some nuclear reactor constructions incorporating such an arrangement are described, including liquid metal reactors. (U.K.)

  4. Nursing administration of medication via enteral tubes in adults: a systematic review.

    Science.gov (United States)

    Phillips, Nicole M; Nay, Rhonda

    2007-09-01

    Background  Enteral tubes are frequently inserted as part of medical treatment in a wide range of patient situations. Patients with an enteral tube are cared for by nurses in a variety of settings, including general and specialised acute care areas, aged care facilities and at home. Regardless of the setting, nurses have the primary responsibility for administering medication through enteral tubes. Medication administration via an enteral tube is a reasonably common nursing intervention that entails a number of skills, including preparing the medication, verifying the tube position, flushing the tube and assessing for potential complications. If medications are not given effectively through an enteral tube, harmful consequences may result leading to increased morbidity, for example, tube occlusion, diarrhoea and aspiration pneumonia. There are resultant costs for the health-care system related to possible increased length of stay and increased use of equipment. Presently what is considered to be best practice to give medications through enteral tubes is unknown. Objectives  The objective of this systematic review was to determine the best available evidence on which nursing interventions are effective in minimising the complications associated with the administration of medications via enteral tubes in adults. Nursing interventions and considerations related to medication administration included form of medication, verifying tube placement before administration, methods used to give medication, methods used to flush tubes, maintenance of tube patency and specific practices to prevent possible complications related to the administration of enteral medications. Search strategy  The following databases were searched for literature reported in English only: CINAHL, MEDLINE, The Cochrane Library, Current Contents/All Editions, EMBASE, Australasian Medical Index and PsychINFO. There was no date restriction applied. In addition, the reference lists of all included

  5. Pre-radiotherapy feeding tube identifies a poor prognostic subset of postoperative p16 positive oropharyngeal carcinoma patients

    International Nuclear Information System (INIS)

    This study explores variables associated with poor prognosis in postoperative p16 positive oropharyngeal squamous cell carcinoma (OPSCC) patients undergoing adjuvant radiotherapy or chemoradiotherapy. Specifically, analysis was done related to timing of feeding tube insertion relative to radiotherapy. From 1997–2009, of 376 consecutive patients with OPSCC, 220 received adjuvant IMRT, and 97 were p16 positive and eligible. Of these, 23 had feeding tube placement before IMRT (B-FT), 32 during/after IMRT (DA-FT), and 42 had no feeding tube (NO-FT). Feeding tubes were not placed prophylactically. These three groups were analyzed for differential tumor, patient, treatment, and feeding tube characteristics, as well as differences in overall survival (OS), disease free survival (DFS), and distant metastasis free survival (DMFS). Pre-RT FT insertion was associated with higher tumor size and depth, T (but not N) and overall stage, comorbidities, presence of chemotherapy, and less use of transoral laser microsurgery/transoral bovie. Additionally, time from surgery to IMRT completion was also statistically longer in the B-FT group. The feeding tube was permanent in 52% of patients in the B-FT group versus 16% in the DA-FT group (p = 0.0075). The 5-year OS for the NO-FT, DA-FT, and B-FT groups was 90%, 86%, and 50%, respectively. The 5-year DFS for the NO-FT, DA-FT, and B-FT groups was 87.6%, 83.6%, and 42.7%, respectively. Multivariate analysis showed that for OS and DFS, feeding tube placement timing and smoking history were statistically significant. Due to the poor prognosis of early FT insertion, the presence of FTs at time of radiotherapy consultation can be used as an alternate marker to identify a subset of p16 positive OPSCC patients that have a poor prognosis

  6. Pressurized drift tubes scintillating fiber hadron calorimetry. Final report

    Energy Technology Data Exchange (ETDEWEB)

    Bromberg, C.; Huston, J.; Miller, R. [and others

    1995-03-22

    Under this contract members of the MSU high energy physics group constructed a full-scale Pressurized Drift Tube Chamber intended for the GEM muon system at the SSC. They achieved a position resolution of <90 {mu} over the full 5 m{sup 2} area of the detector. This resolution satisfied the GEM resolution requirements of <100 {mu} by a comfortable margin. Based on their SSC work they developed a new technique for creating wire supports in drift tubes with an overall placement accuracy of <20 {mu}. This technique requires only simple jigging and can be duplicated and operated at low cost. Also, they participated in the design and testing of a hadron calorimeter prototype for GEM. This work lead the authors to develop a semi-automatic welding machine to fuse together two plastic optical fibers. Copies of this machine are currently in use in the CDF endplug upgrade at Fermilab and additional copies are used widely in calorimeter and fiber-tracker construction.

  7. Laparoscopic common bile duct exploration and antegrade biliary stenting: Leaving behind the Kehr tube

    Directory of Open Access Journals (Sweden)

    Darío Martínez-Baena

    2013-03-01

    Full Text Available Introduction: single-stage laparoscopic surgery of cholelithiasis and associated common bile duct stones (CL-CBDS has shown similar results when compared to laparoscopic cholecystectomy combined with ERCP. Classically, choledochorrhaphy has been protected by a T-tube drain to allow external bypass of bile flow. However, its removal is associated with a significant complication rate. Use of antegrade biliary stents avoids T-tube removal associated morbidity. The aim of this study is to compare the results of choledochorrhaphy plus T-tube drainage versus antegrade biliary stenting in our series of laparoscopic common bile duct explorations (LCBDE. Material and methods: between 2004 and 2011, 75 patients underwent a LCBDE. Choledochorrhaphy was performed following Kehr tube placements in 47 cases and transpapillary biliary stenting was conducted in the remaining 28 patients. Results: postoperative hospital stay was shorter in the stent group (5 ± 10.26 days than in the Kehr group (12 ± 10.6 days, with a statistically significant difference. There was a greater trend to grade B complications in the stent group (10.7 vs. 4.3 % and to grade C complications in the Kehr group (6.4 vs. 3.6 %. There were 3 cases of residual common bile duct stones in the Kehr group (6.4 % and none in the stent group. Conclusions: antegrade biliary stenting following laparoscopic common bile duct exploration for CL-CBDS is an effective and safe technique that prevents T-tube related morbidity.

  8. Osmotic regulation of seamless tube growth.

    Science.gov (United States)

    Schottenfeld-Roames, Jodi; Ghabrial, Amin S

    2013-02-01

    Most organs are composed of tubes of differing cellular architectures, including intracellular 'seamless' tubes. Two studies examining the morphogenesis of the seamless tubes formed by the excretory canal cell in Caenorhabditis elegans reveal a previously unappreciated role for osmoregulation of tubulogenesis: hyperosmotic shock recruits canalicular vesicles to the lumenal membrane to promote seamless tube growth. PMID:23377027

  9. Osmotic regulation of seamless tube growth

    OpenAIRE

    Schottenfeld-Roames, Jodi; Ghabrial, Amin S.

    2013-01-01

    Most organs are composed of tubes of differing cellular architectures, including intracellular, “seamless” tubes. Two studies examining the morphogenesis of the C. elegans excretory canal cell seamless tubes reveal a previously unappreciated role for osmoregulation of tubulogenesis: hyperosmotic shock recruits canalicular vesicles to the lumenal membrane to promote seamless tube growth.

  10. Transvaginal closure of the bladder neck and placement of a suprapubic catheter for destroyed urethra after long-term indwelling catheterization.

    Science.gov (United States)

    Zimmern, P E; Hadley, H R; Leach, G E; Raz, S

    1985-09-01

    We report on 6 women with continuous urinary incontinence as a late complication of an indwelling urethral catheter for neurogenic bladder. Pressure necrosis by the balloon resulted in progressive destruction of the entire urethra, with subsequent incontinence despite the catheter. Surgical attempts at bladder neck closure to correct the incontinence generally have been unsuccessful. Instead of supravesical urinary diversion, we performed transvaginal closure of the bladder neck and percutaneous placement of a permanent suprapubic tube cystostomy. All 6 patients remained dry after closure and none has shown upper urinary tract deterioration at followup for as long as 5 years. PMID:4040980

  11. Annotated Bibliography on Offender Job Training and Placement. Second Edition.

    Science.gov (United States)

    Clem, Constance, Ed.

    This second edition of an annotated bibliography on offender job training and placement lists nearly 400 items from the collection of the National Institute of Corrections (NIC) Information Center in Longmont, Colorado, including 85 items added since the first edition in 1997. Items new to this edition are marked with an asterisk. Citations have…

  12. Childhood Placement in Special Education and Adult Well-Being

    Science.gov (United States)

    Chesmore, Ashley A.; Ou, Suh-Ruu; Reynolds, Arthur J.

    2016-01-01

    The present study investigates the relationship between childhood placement in special education and adult well-being among 1,377 low-income, minority children participating in the Chicago Longitudinal Study. Roughly 16% of the sample received special education services in Grades 1 to 8. After accounting for sociodemographic factors and early…

  13. 45 CFR 84.35 - Evaluation and placement.

    Science.gov (United States)

    2010-10-01

    ... BASIS OF HANDICAP IN PROGRAMS OR ACTIVITIES RECEIVING FEDERAL FINANCIAL ASSISTANCE Preschool, Elementary, and Secondary Education § 84.35 Evaluation and placement. (a) Preplacement evaluation. A recipient that operates a public elementary or secondary education program or activity shall conduct...

  14. 45 CFR 605.35 - Evaluation and placement.

    Science.gov (United States)

    2010-10-01

    ... Preschool, Elementary, and Secondary Education § 605.35 Evaluation and placement. (a) Preplacement evaluation. A recipient that operates a public elementary or secondary education program or activity shall... who, because of handicap, needs or is believed to need special education or related services...

  15. Capacitor placement for transmission systems using ordinal optimization approach

    Energy Technology Data Exchange (ETDEWEB)

    Lin, S.-Y. [National Chiao Tung Univ., Hsinchu, Taiwan (China); Lin, C.-H. [Kao-Yuan Univ. Technology, Kaohsiung, Taiwan (China)

    2007-07-01

    Capacitor placement poses a challenge in power system design because it involves integer variables for determining the placement locations and discrete variables for deciding the number of capacitor banks to be installed. It is also a large-dimension constrained optimization problem for considering the system constraints and, investment constraint. This paper proposed an ordinal optimization (OO) approach for solving this problem. The approach consisted of five OO iterations. The size and solution quality of the resulting candidate solution set was reduced and improved, iteration by iteration. A reasonable capacitor placement pattern was obtained in the final iteration. In addition, in order to demonstrate the computational efficiency of the approach and the quality of the obtained solutions, the genetic algorithm was compared with the TABU search method. The paper defined the problem statement and discussed the OO approach and explained the five iterations and theory. The test results demonstrated that the proposed approach is suitable for the capacitor placement problem. 16 refs., 2 tabs.

  16. Compassion Fatigue among Social Work Students in Field Placements

    Science.gov (United States)

    Harr, Cynthia; Moore, Brenda

    2011-01-01

    This pilot study, conducted with BSW and MSW field students at a public university in Southwestern United States, explored the psychological effect of compassion fatigue and compassion satisfaction on social work students in field placements. Results from the Professional Quality of Life Scale's compassion satisfaction and fatigue subscales…

  17. Assessing L2 Knowledge of Spanish Clitic Placement: Converging Methodologies.

    Science.gov (United States)

    Duffield, Nigel; White, Lydia

    1999-01-01

    Reports on an experiment investigating adult second language (L2) acquisition of Spanish object clitic placement by native speakers of English and French. Two experimental methodologies are compared: an on-line sentence matching task and an off-line grammaticality judgment task. (Author/VWL)

  18. Placement and the Vietnam-Era Veteran in Transition

    Science.gov (United States)

    Kelz, James W.

    1973-01-01

    This article traces the etiology and nature of our concern for Vietnam-era vets and suggests that a successful placement program depends upon three factors: (a) an understanding of the characteristics of present-day veterans, (b) an awareness of agencies, programs, and industries comprising the network of helping services, and (c) knowledge of…

  19. Future Shop: A Model Career Placement & Transition Laboratory.

    Science.gov (United States)

    Floyd, Deborah L.; And Others

    During 1988-89, the Collin County Community College District (CCCCD) conducted a project to develop, implement, and evaluate a model career laboratory called a "Future Shop." The laboratory was designed to let users explore diverse career options, job placement opportunities, and transfer resources. The Future Shop lab had three major components:…

  20. Industrialization and Economic Development in Advanced Placement Human Geography.

    Science.gov (United States)

    Bailey, Adrian J.

    2000-01-01

    Focuses on the industrialization and economic development section of the Advanced Placement (AP) human geography course, addressing four specific aspects: (1) the character of industrialization; (2) spatial aspects of the rise of industrial economies; (3) contemporary global patterns of industrialization and resource extraction; and (4) impacts of…

  1. Accounting for L2 learners’ errors in word stress placement

    Directory of Open Access Journals (Sweden)

    Clara Herlina Karjo

    2016-01-01

    Full Text Available Stress placement in English words is governed by highly complicated rules. Thus, assigning stress correctly in English words has been a challenging task for L2 learners, especially Indonesian learners since their L1 does not recognize such stress system. This study explores the production of English word stress by 30 university students. The method used for this study is immediate repetition task. Participants are instructed to identify the stress placement of 80 English words which are auditorily presented as stimuli and immediately repeat the words with correct stress placement. The objectives of this study are to find out whether English word stress placement is problematic for L2 learners and to investigate the phonological factors which account for these problems. Research reveals that L2 learners have different ability in producing the stress, but three-syllable words are more problematic than two-syllable words. Moreover, misplacement of stress is caused by, among others, the influence of vowel lenght and vowel height.

  2. Work Placements for Languages Students: A Transformative Experience

    Science.gov (United States)

    Organ, Alison

    2016-01-01

    A work placement module is compulsory in the second year of most degree programmes at York St John University, as part of an institution-wide strategy to embed employability in the curriculum. As most languages students spend their second year studying abroad, the Languages in the Workplace module was designed in such a way that the setting up of…

  3. Advanced Placement Economics Improves Both Merit and Equity

    Science.gov (United States)

    Meek, Sally; Morton, John

    2009-01-01

    In 1989, microeconomics and macroeconomics examinations debuted on the Advanced Placement (AP) scene. At that time, many professors of economics were skeptical that college freshmen had the skills and maturity to understand the concepts in principles of economics courses. They thought teaching these concepts to high school students was even more…

  4. Towards an evaluation of quality for names placement methods

    NARCIS (Netherlands)

    Dijk, Steven van; Kreveld, M.J. van; Strijk, T.; Wolff, A.

    2002-01-01

    The cartographic labeling problem is the problem of placing text on a map. This includes the positioning of the labels, and determining the shape in the case of line and area feature labels. There are many rules and customs that describe aspects of good label placement, like readability and clear as

  5. Developmental, Familial, and Peer Deterrents to Adoption Placement.

    Science.gov (United States)

    Weir, Kyle N.

    2000-01-01

    Examines the developmental, familial, and peer deterrents that form barriers to adoption placement, based on interviews with 17 teen mothers in a residential facility. Analyzes responses based on an Eriksonian developmental model, and notes the role of family "cutoffs" and "re-admissions" and peer pressure as deterrents to adoption. Suggests…

  6. [Studies of Student Performance on the Comparative Guidance Placement Program.

    Science.gov (United States)

    Reed, M. Douglas

    Data from the College Entrance Examination Board's Comparative Guidance and Placement (CGP) Program were used in these two studies of students at Central Virginia Community College (CVCC). In the first study, 1971 fall quarter performance in specific courses and in all courses was compared to CGP performance. The conclusions indicate that: (1) CGP…

  7. Teaching Melodic Dictation in Advanced Placement Music Theory

    Science.gov (United States)

    Paney, Andrew S.; Buonviri, Nathan O.

    2014-01-01

    In this study approaches to teaching melodic dictation skills used by Advanced Placement (AP) Music Theory teachers were examined. Twelve high school teachers from four states were interviewed. Four themes emerged from the interview transcripts: cognitive frameworks, processing strategies, rhythm, and course design. Participants generally…

  8. Do Graduate Student Teacher Training Courses Affect Placement Rates?

    Science.gov (United States)

    Ishiyama, John; Balarezo, Christine; Miles, Tom

    2014-01-01

    We investigate whether the existence of a required graduate course on "Teaching in Political Science" is related to overall job placement rates reported by graduate political science programs. We examine this in light of evidence from 73 public PhD-granting political science departments across the country. We find that the existence of…

  9. Percutaneous placement of peritoneal port-catheter in oncologic patients

    International Nuclear Information System (INIS)

    The aim of this paper is to describe the technique of percutaneous ultrasound (US)-guided placement of a peritoneal port-catheter in an interventional radiological setting. Nineteen patients with peritoneal carcinomatosis were selected for intraperitoneal port-catheter placement in order to perform intracavitary receptor-immuno- or radio-immunotherapy with Ytrium-90. All the procedures were performed percutaneously under US and fluoro guidance; the insertion site for catheters was chosen according to abdominal conditions and US findings: all devices were implanted at the lower abdominal quadrants. All patients were followed up with CT and US according to the therapy protocol. The procedure was successfully completed in 15/19 patients, in 4 being contraindicated by peritoneal adhesions. No procedure-related complications and device occlusions during therapy were observed; one catheter displaced 7 months later the placement. In our experience, this procedure was feasible, reliable and easy to perform, allowing the correct administration of the planned intracavitary therapy. Peritoneal adhesions are the main limitation of peritoneal port placement. (orig.)

  10. Surprise and Sense Making: Undergraduate Placement Experiences in SMEs

    Science.gov (United States)

    Walmsley, Andreas; Thomas, Rhodri; Jameson, Stephanie

    2006-01-01

    Purpose: This paper seeks to explore undergraduate placement experiences in tourism and hospitality SMEs, focusing on the notions of surprise and sense making. It aims to argue that surprises and sense making are important elements not only of the adjustment process when entering new work environments, but also of the learning experience that…

  11. Combustion engineering: steam generator tube bending practices

    International Nuclear Information System (INIS)

    The tube bending practices and procedures employed by Combustion Engineering (CE), when bending inconel tubing is discussed. CE has two different type tube geometries in the steam generator. The innermost tubes are 1800 U-bends while the majority of the tubes have two (2) 900 bends with a straight leg between these 900 bends. The first 18 rows have U-bends (2 1/2'' to 11''R), while the remaining tubes have the double 900 geometry. All double 900 bends are bent to a 10'' radius. This presentation will address the following important parameters necessary to achieve a high quality bent tube: fabrication requirements at the tube mill; tube bending equipment; tube bending operation; inspection and final preparation; and packaging

  12. Current practices for ultrasonic and radiographic examination of tubes, tube plates and tube-plate welds of tube bundles in heat exchangers. Chapter 3

    International Nuclear Information System (INIS)

    The chapter describes the ultrasonic and radiographic inspection procedures that are applied to heat exchanger tube bundles. The inspection process starts with the ultrasonic examination of the tubes and tube plates during manufacture, followed by radiography of the tube-to-tube-plate welds during fabrication of the tube bundle. Ultrasonic methods are explained for welds which are amenable to this type of inspection. For the in-service inspection of tube bundles the chapter relates the authors' experiences on the ultrasonic inspection of tubes and tube plates in the Prototype Fast Breeder Reactor at Dounreay. At the end of the chapter some comments are made about future ultrasonic and radiographic developments for tube bundles. (author)

  13. Enhancing undergraduate community placements: a critical review of current literature.

    Science.gov (United States)

    Dickson, Caroline A W; Morris, Gillian; Gable, Clare

    2015-04-01

    In the face of the UK-wide policy shift to increased home care, inspiring and enabling the next generation of community nurses is more urgent than ever. The quality of the pre-registration practice learning experience is highly influential on career choices at the point of qualification. Given that 50% of learning by pre-registration students takes place in practice, mentors have a crucial role to play in preparing the next generation of nurses to work in the community. This article discusses the findings of a systematic and critical literature review of pre-registration placements that was funded by the Queen's Nursing Institute Scotland. The review found that students' experiences of learning in community settings are variable, and perceptions of students and mentors are misaligned in terms of what a quality placement should look like. Although there is no clear definition of what constitutes a community placement and there is some underuse of learning environments in areas such as general practice nursing, there are also a number of examples of new and imaginative placements. While these innovations provide 'whole experience' placements, they are currently lacking robust evaluation, despite their potential usefulness on a larger scale. Mentors have the opportunity to provide students with a range of learning opportunities that increase preparedness for working in the community, allowing final year students in particular greater influence over their learning experience. Students undertaking community practice learning, where they have a managed level of autonomy, are more likely to feel confident to take on community nursing roles. PMID:25839877

  14. AN EXPANSIVE AND COMPARABLE STUDY OF EFFECTUAL ALGORITHMS FOR PLACEMENT IN PHYSICAL DESIGN

    OpenAIRE

    PRAGYA SHARMA; UPASANA YADAV; NEERAJ KR. SHUKLA

    2014-01-01

    This review paper consists of comprehensive study of VLSI algorithms for placement in physical design. The work has been classified under different perspectives like performance,area,wirelength,cost and power and the algorithms address the coverage and optimization of these factors. Placement is a major step for VLSI physical design as it involves placing the blocks on the chip with minimum possible area consumption however the initial placement is done by constructive placement algorithms su...

  15. Innovation, personal growth and professional identity: perspectives on role emerging placements in occupational therapy

    OpenAIRE

    Warren, Alison F

    2014-01-01

    Role emerging placements are relatively new in the Republic of Ireland and there is debate regarding the influence of this placement model on the learning and development of occupational therapy students. The model involves a student completing a placement in a non-traditional setting, with supervision from an on-site supervisor and an off-site occupational therapist. This research explores how learning opportunities are created in role emerging placements to support the development of occupa...

  16. Tube feeding patients with dementia.

    Science.gov (United States)

    Chernoff, Ronni

    2006-04-01

    As the population ages, the incidence of dementia increases. All types of dementia, whether they are reversible or irreversible, lead to loss of intellectual function and judgment, memory impairment, and personality changes. The skills to feed oneself, use eating utensils, and consume items recognized as food, thereby maintaining nutrition status, may be lost as dementia progresses. Reports indicate that nutrition status may be maintained when patients are hand fed, but this is labor intensive and therefore expensive. Feeding via a percutaneous endoscopic gastrostomy tube is often chosen as an acceptable alternative. Research indicates that there is little benefit in this population when aggressive nutrition support is instituted. Providing tube feeding to patients with dementia does not necessarily extend life, increase weight, or reduce the incidence of pressure ulcers or aspiration. There are many legal and ethical issues involved in the decision to place a feeding tube in demented patients. The primary issue in patients with dementia may be autonomy and the right of an individual to decide whether or not a tube should be placed at all. Legally, there is clear precedent that the courts see the insertion of a feeding tube as extraordinary care that the patient has the right to refuse. However, much of case law is derived from cases of patients who were in a persistent vegetative state. Advance directives help to determine what the patient would want for himself. Considering all the options before the patient can no longer make decisions is the most desirable course. PMID:16556924

  17. Physics of magnetic flux tubes

    CERN Document Server

    Ryutova, Margarita

    2015-01-01

    This book is the first account of the physics of magnetic flux tubes from their fundamental properties to collective phenomena in an ensembles of flux tubes. The physics of magnetic flux tubes is absolutely vital for understanding fundamental physical processes in the solar atmosphere shaped and governed by magnetic fields. High-resolution and high cadence observations from recent space and  ground-based instruments taken simultaneously at different heights and temperatures not only show the ubiquity of filamentary structure formation but also allow to study how various events are interconnected by system of magnetic flux tubes. The book covers both theory and observations. Theoretical models presented in analytical and phenomenological forms are tailored for practical applications. These are welded with state-of-the-art observations from early decisive ones to the most recent data that open a new phase-space for exploring the Sun and sun-like stars. Concept of magnetic flux tubes is central to various magn...

  18. Analysis of autofrettaged metal tubes

    International Nuclear Information System (INIS)

    Thick-walled cylinders are widely used as compressor cylinders, pump cylinders, high pressure tubing, process reactors and vessels, nuclear reactors, isostatic vessels and gun barrels. In practice, cylinders are generally subjected to sudden and frequently drastic pressure fluctuations, such as the pressure generated in a gun barrel upon the firing of the weapon, pressure reversals in pump cylinders or in process reactors employing high-pressure piping, necessitating enhanced strength of such cylinders. A process for enhancing the strength of thick-walled cylinders has been in service, and is referred to as 'autofrettage'. It extends the service life of the cylinder. The autofrettage is achieved by increasing elastic strength of a cylinder with various methods such as hydraulic pressurization, mechanical swaging, or by utilizing the pressure of a powder gas. This research work deals with the hydraulic and mechanical autofrettage of metal tubes with the objective to attain enhanced strength. Five metal tubes are taken randomly for analysis purpose. The experimental data for five metal tubes is obtained to analyze the behavior of different parameters used during, before, and after autofrettage process. For this research, two-stage autofrettage is taken into consideration. The modeling of the metal tube is carried out in WildFire-ProEngineering, and for analysis purpose, finite element software ANSYS7 and COSMOS are used. The graphical analysis of swage autofrettage is carried out using MATLAB7. The results are validated using available experimental and numerical data. (author)

  19. Penurunan Kerugian Head pada Belokan Pipa dengan Peletakan Tube Bundle

    Directory of Open Access Journals (Sweden)

    Pratikto

    2010-01-01

    Full Text Available Fluid flow flowing through an elbow causes separation. Separation leads to vortex, shake and cavity. As a result, the head loss will increase and the pipe installation is potentially damaged. Thus, separation must be eliminated. The separation is identified by the presence of high pressure decreasing in the downstream of elbow. To minimize the pressure decreasing in elbow, we need flow conditioner like a tube bundle. The aim of this research is to identify the influence of tube bundle placement toward the head loss such as pressure drop. The elbow being tested is placed on a pipe installation already equipped by testing aids such as computers and its software, pressure transmitter, and rotameter. The free variable in this study is the distance of the tube bundle from the outlet edge of the pipe turn 2D, 3D, 4D and 5D and fluid flow volume which flows through the installation that are 1000, 1100, 1200, 1300, 1400, 1500, 1600, 1700, 1800, 1900 and 2000 litres/hour. Whereas, the dependent variable is the pressure drop (p measured by pressure transmitter and the head loss of which the value is obtained from the measurement of pressure drop. The test was conducted on 1.25 inch in diameter elbow with 22 holes of tube bundle and 27 mm in length. To know the head loss, so the pressure drop (p of fluid at upstream and downstream of the pipe turn are measured using 2 pressure transmitters connected to the computer through ADC (Analog Digital Converter. The data had already recorded in computer was processed using the LabView software to get the averaged value of the pressure drop. Abstract in Bahasa Indonesia: Aliran Fluida yang mengalir melalui belokan pipa menyebabkan terjadinya separasi. Separasi mengakibatkan terjadinya vortex, getaran, dan kavitasi, dimana kerugian tersebut mengakibatkan kerugian head meningkat dan berpotensi merusak instalasi pipa sehingga separasi perlu dihilangkan. Separasi ini ditandai dengan penurunan tekanan yang besar

  20. Endoscopic management of pancreatic duct injury by endoscopic stent placement: a case report and literature review

    Directory of Open Access Journals (Sweden)

    Ito Yasuhiro

    2012-07-01

    Full Text Available Abstract Recently, the diagnostic evaluation of pancreatic injury has improved dramatically. On the other hand, it is occasionally difficult to diagnose pancreatic injury, because there are no specific signs, symptoms, or laboratory findings. Radiological imaging also often fails to identify pancreatic injury in the acute phase. Delayed diagnosis results in significant morbidity and mortality. Most cases of pancreatic injury with suspicion or pancreatic duct disruption require surgery. Endoscopic retrograde cholangiopancreatography is one of the most accurate modalities for ductal evaluation and therapy and might enable one to avoid unnecessary surgery. We describe endoscopic management of pancreatic duct injury by endoscopic stent placement. A 45-year-old woman was admitted after a traffic accident. A computed tomography scan showed pancreatic parenchyma disruption at the pancreatic head. Endoscopic retrograde cholangiopancreatography demonstrated disruption of the pancreatic duct with extravasation into the peripancreatic fluid collection. A 5-French endoscopic nasopancreatic drainage (ENPD tube was placed. Her symptoms dramatically improved. ENPD tube was exchanged for a 5-French 5-cm pancreatic stent. Subsequent follow-up CT revealed remarkable improvement. On the 26th day, the patient was discharged from the hospital without symptoms or complications. In this report, a pancreatic stent may lead to rapid clinical improvement and enable surgery to be avoided. On the other hand, the reported complications of long-term follow-up make the role of stenting uncertain. Thus, close attention should be paid to stenting management in the follow-up period. A pancreatic stent is useful for pancreatic ductal injury. If pancreatic ductal injury is managed appropriately, a pancreatic stent may improve the clinical condition, and also prevent unnecessary surgery.

  1. The Effect of the Advanced Placement Training and Incentive Program on Increasing Enrollment and Performance on Advanced Placement Science Exams

    Science.gov (United States)

    Ramsey, Susan Brady

    2012-01-01

    The purpose of this study is to examine the effectiveness of the National Math and Science Initiative's Advanced Placement Training and Incentive Program (APTIP) on the number of students taking AP science courses and their performance. The study evaluated 39 schools over a six-year period in six states that participate in the APTIP. The…

  2. Disrupted Social Work Field Placement: Factors That Contribute to Premature Termination of BSW Students' Field Placement

    Science.gov (United States)

    Tyler, Janet

    2012-01-01

    According to R. Wayne ("Legal Guidelines for Dismissing Students Because of Poor Performance in the Field," 2004), there is a widely accepted assumption in social work education that field placement provides the best opportunity to evaluate students' goodness-of-fit with the profession and is therefore used to weed out unsuitable…

  3. Acute Duodenal Obstruction After Percutaneous Placement of Metallic Biliary Stents: Peroral Treatment with Enteral Stents

    International Nuclear Information System (INIS)

    Three patients with malignant biliary obstruction were treated with placement of metallic biliary stents. Two patients had known partial duodenal stenosis but had no symptoms of gastrointestinal obstruction. The patients developed symptomatic duodenal obstruction early after biliary metallic stent placement. The symptomatic duodenal obstructions were successfully treated with peroral placement of duodenal stents, which obviated the need for surgical intervention

  4. Waarschuwingen, beroemheden en brand placement: de effecten van type waarschuwing en geloofwaardigheid op kijkerreacties

    NARCIS (Netherlands)

    K. Dekker; E. van Reijmersdal

    2010-01-01

    Although many studies on product placement have been conducted, effects of celebrities in product placement remained unstudied. In addition, new legislation forces television programs to show warnings for sponsored content. However, effects of such warnings for product placement are unknown. The pre

  5. A new branch of advertising: reviewing factors that influence reactions to product placement

    NARCIS (Netherlands)

    E. van Reijmersdal; P. Neijens; E.G. Smit

    2009-01-01

    This iiterature review presents a quantitative synthesis of 57 studies on product placement and shows which factors are most effective, it shows that placement characteristics, such as placement commerciality, modality, and prominence, have a strong impact on audience reactions. Audience characteris

  6. Failure analysis of brass tubes

    Energy Technology Data Exchange (ETDEWEB)

    Lawrence, S.J.; Bodnar, R.L. [Bethlehem Steel Corp., PA (United States)

    1997-02-01

    The 1996 Jacquet Lucas Award for Excellence in Metallography was won by Samuel J. Lawrence and Richard L. Bodnar for their analysis of cracks in Admiralty brass cooling tubes, which are part of a heat exchanger in a turbogenerator that provides electricity to a manufacturing plant. A mixture of non-recirculating city and spring pit water flows through bundles of tubes to cool the oil in which they are immersed. However, a problem developed when several of the brass tubes cracked transversely, allowing cooling water to mix with the oil. This award-winning entry in the ASM/IMS competition shows how the metallographers analyzed the cracks, and what the results were.

  7. Energy dissipation in circular tube

    Directory of Open Access Journals (Sweden)

    A.D. Girgidov

    2012-01-01

    Full Text Available Energy dissipation distribution along the circular tube radius is important in solving such problems as calculation of heat transfer by the air flow through building envelope; calculation of pressure loss in spiral flows; calculation of cyclones with axial and tangential supply of dust-containing gas.Two types of one-dimensional radially axisymmetric flows in circular tube were considered: axial flow and rotation about the axis (Rankine vortex. Relying on two- and four-layer description of axial turbulent flow energy dissipation was calculated in each layer.Similar calculation for Rankine vortex with viscous sublayer at the tube surface was provided. By employing the dissipation minimum principle the boundary radius between rigid rotation and free vortex is calculated. Approximation of the velocity distribution in Rankine vortex is proposed.

  8. Drift tubes of Linac 2

    CERN Multimedia

    1977-01-01

    With the advent of the 800 MeV PS Booster in 1972, the original injector of the PS, a 50 MeV Alvarez-type proton linac, had reached its limits, in terms of intensity and stability. In 1973 one therefore decided to build a new linac (Linac 2), also with a drift-tube Alvarez structure and an energy of 50 MeV. It had a new Cockcroft-Walton preinjector with 750 keV, instead of the previous one with 500 keV. Linac 2 was put into service in 1980. The old Linac 1 was then used for the study of, and later operation with, various types of ions. This picture shows Linac 2 drift-tubes, suspended on stems coming from the top, in contrast to Linac 1, where the drift-tubes stood on stems coming from the bottom.

  9. Catheters, wires, tubes and drains on postoperative radiographs of pediatric cardiac patients: the whys and wherefores

    International Nuclear Information System (INIS)

    Surgical treatment of congenital heart disease has advanced dramatically since the first intracardiac repairs in the mid-20th century. Previously inoperable lesions have become the focus of routine surgery and patients are managed successfully in intensive care units around the world. As a result, increasing numbers of postoperative images are processed by departments of radiology in children's hospitals. It is important that the radiologist accurately documents and describes the catheters, wires, tubes and drains that are present on the chest radiograph. This article reviews the reasons for the placement and positioning of perioperative equipment in children who have surgical repair of atrial septal defect, ventricular septal defect or transposition of the great arteries. Also included are a brief synopsis of each cardiac anomaly, the surgical procedure for its correction, and an in-depth discussion of the postoperative chest radiograph including illustrations of catheters, wires, tubes and drains. (orig.)

  10. Denervation of the Eustachian Tube and Hearing Loss Following Trigeminal Schwannoma Resection

    Science.gov (United States)

    Ito, Christopher J.; Malone, Alexander K.; Wong, Ricky H.; van Loveren, Harry R.; Boyev, K. Paul

    2016-01-01

    Objectives To discuss eustachian tube dysfunction (ETD) as a cause of hearing loss and to discuss its pathogenesis following resection of trigeminal schwannomas. Methods Presented herein are two cases of trigeminal schwannoma that were resected surgically with sacrifice of the motor branch of the trigeminal nerve. Neither of the cases had evidence of extracranial extension nor preoperative ETD. Both patients developed ETD and have been followed without evidence of schwannoma recurrence. Conclusions Trigeminal schwannomas are rare tumors that typically require surgical resection. Hearing loss is a potential postsurgical deficit and warrants evaluation by an otolaryngologist with consideration given to a preoperative audiogram. ETD as a result of trigeminal motor branch sacrifice should be included in the differential diagnosis of postoperative hearing loss in this patient subset as it may be reversed with placement of a tympanostomy tube. PMID:26937336

  11. Single port laparoscopic long-term tube gastrostomy in Göttingen minipigs

    DEFF Research Database (Denmark)

    Birck, Malene Muusfeldt; Vegge, Andreas; Moesgaard, S G;

    2015-01-01

    Oral dosing by gavage is often used to test compounds in minipigs. This method is also used for certain nutritional studies that require exact dosing. This procedure may be stressful for the animal and requires the assistance of more than one technician. We investigated whether a gastrostomy tube...... the stomach and placement of a locking pigtail catheter into the fundus region of the stomach. The minipigs were followed for three weeks after surgery and macroscopic and microscopic tissue reactions were evaluated at necropsy. All catheters were successfully placed and were easy to use. At necropsy...... were observed. Single port laparoscopic tube gastrostomy with a locking pigtail catheter is safe, simple and reliable and is an appropriate alternative to, for example, percutaneous endoscopic gastrostomy, when long-term enteral delivery of pharmacological or nutritional compounds is needed. The use of...

  12. Working session 3: Tubing integrity

    International Nuclear Information System (INIS)

    Twenty-three individuals representing nine countries (Belgium, Canada, the Czech Republic, France, Japan, the Slovak Republic, Spain, the UK, and the US) participated in the session on tube integrity. These individuals represented utilities, vendors, consultants and regulatory authorities. The major subjects discussed by the group included overall objectives of managing steam generator tube degradation, necessary elements of a steam generator degradation management program, the concept of degradation specific management, structural integrity evaluations, leakage evaluations, and specific degradation mechanisms. The group's discussions on these subjects, including conclusions and recommendations, are summarized in this article

  13. Flow Deflection in Intersected Tubes

    Institute of Scientific and Technical Information of China (English)

    2000-01-01

    In order to verify the flow interference at the fracture intersections, a group of hydraulic simulations of crossing flow was carried out. The manifold interference effects at the intersection of fractures on water flow has been confirmed extensively either in the normal or in the oblique intersected tubes as well as in the intersected tubes of either equal or variant diameters. Consequently, suggest that the fissure network can no longer be taken as a set of solitary fractures, but as a set of elementary intersected ractures. The deflection effect at fracture intersections on the water flow should be taken into considwhen is dealt with any theory related to the water migration in fractures.

  14. Working session 3: Tubing integrity

    Energy Technology Data Exchange (ETDEWEB)

    Cueto-Felgueroso, C. [Tecnatom, S.A., San Sebastian de los Reyes, Madrid (Spain); Strosnider, J. [NRC, Washington, DC (United States)

    1997-02-01

    Twenty-three individuals representing nine countries (Belgium, Canada, the Czech Republic, France, Japan, the Slovak Republic, Spain, the UK, and the US) participated in the session on tube integrity. These individuals represented utilities, vendors, consultants and regulatory authorities. The major subjects discussed by the group included overall objectives of managing steam generator tube degradation, necessary elements of a steam generator degradation management program, the concept of degradation specific management, structural integrity evaluations, leakage evaluations, and specific degradation mechanisms. The group`s discussions on these subjects, including conclusions and recommendations, are summarized in this article.

  15. Fluidelastic instability in tube arrays

    International Nuclear Information System (INIS)

    When an array of tubes is subjected to crossflow, the tubes can experience dynamic instability, generally called fluidelastic instability. Instability initiates when the crossflow velocity exceeds a threshold value above which energy input from the flow exceeds that dissipated by system damping. Catastrophic failures of reactor and process plant equipment have been attributed to fluidelastic instability. As a result, extensive research studies have been conducted in the last 15 years with the objective of understanding the instability mechanisms and developing general design guidelines to avoid instability. Argonne National Laboratory has a continuing research program in this area which includes both mathematical model development and experimentation. This paper describes recent developments and accomplishments

  16. On the welded Tube map

    OpenAIRE

    Audoux, Benjamin

    2014-01-01

    This note investigates the so-called Tube map which connects welded knots, that is a quotient of the virtual knot theory, to ribbon torus-knots, that is a restricted notion of fillable knotted tori in the 4-sphere. It emphasizes the fact that ribbon torus-knots with a given filling are in one-to-one correspondence with welded knots before quotient under classical Reidemeister moves and reformulates these moves and the known sources of non-injectivity of the Tube map in terms of filling changes.

  17. Mechanical Instabilities of Biological Tubes

    Science.gov (United States)

    Hannezo, Edouard; Prost, Jacques; Joanny, Jean-François

    2012-07-01

    We study theoretically the morphologies of biological tubes affected by various pathologies. When epithelial cells grow, the negative tension produced by their division provokes a buckling instability. Several shapes are investigated: varicose, dilated, sinuous, or sausagelike. They are all found in pathologies of tracheal, renal tubes, or arteries. The final shape depends crucially on the mechanical parameters of the tissues: Young’s modulus, wall-to-lumen ratio, homeostatic pressure. We argue that since tissues must be in quasistatic mechanical equilibrium, abnormal shapes convey information as to what causes the pathology. We calculate a phase diagram of tubular instabilities which could be a helpful guide for investigating the underlying genetic regulation.

  18. Medical image of the week: Dobhoff placement in a patient with hiatal hernia

    Directory of Open Access Journals (Sweden)

    Sekhon KK

    2015-01-01

    Full Text Available No abstract available. Article truncated at 150 words. A 79 year-old woman with a past medical history of obstructive sleep apnea, chronic obstructive pulmonary disease on home oxygen, obesity hypoventilation syndrome, hypertension, and anxiety presented with a 2 day history of altered mental status and symptoms consistent with a COPD exacerbation, including dyspnea and increased oxygen requirements. She was found to be hypercarbic and did not tolerate a trial of BiPAP due to her altered mentation. She was subsequently intubated. Due to an expected prolonged intubation period, plans for enteral access were made. A Dobhoff naso-duodenal feeding tube (DHT was inserted. On chest radiograph and a concurrent abdominal radiograph, the DHT appeared to have been inserted into the left mainstem bronchus terminating in the left lower lobe (Figure 1A and 1B. The nursing staff removed and replaced the DHT resulting in a similar radiograph. A third placement was attempted with similar radiographic results. Therefore, a computed tomography (CT …

  19. COMPARATIVE STUDY OF ‘PERCUTANEOUS NEPHROLITHOTOMY PLACEMENT’ VERSUS PERCUTANEOUS NEPHROLITHOTOMY WITHOUT NEPHROSTOMY PLACEMENT (TUBELESS PCNL

    Directory of Open Access Journals (Sweden)

    Jagadeeshwar

    2014-11-01

    Full Text Available OBJECTIVES: To assess the efficacy, safety, and morbidity of tubeless percutaneous nephrolithotomy (PCNL and compare it with standard PCNL. METHODOLOGY: Between august 2008 and December 2008 patients undergoing PCNL prospectively evaluated in two groups. One group patients undergone PCNL with nephrostomy placement (Standard PCNL and second group of patients undergone PCNL without nephrostomy tube (TUBELESS PCNL. Case selection criteria were adequately matched and postoperative outcome was recorded in same way in both groups. Patients who needed more than two percutaneous tracts, intraoperative perforation of the pelvicalyceal system, excessive manipulation at the ureteropelvic junction, or a residual stone after the procedure and who had a solitary kidney or azotemia were excluded from the study. RESULTS: A total 43 patients (23 patients in group I, 22 patients in group II were included in the study. Post-operative plain x-ray of kidneys, ureters and bladder showed a 100% stone clearance rate. There was no tract related problems i.e., tract infection and sinus formation. Mean hospital stay was 5.9 days in group I and 4.1days in group II. Post-operative ultrasonography during hospitalization showed no perinephric collection. No readmissions to the hospital at mean follow up of 6 months (range 2to 6 months. All patients were doing well. CONCUSIONS: Avoiding the use of nephrostomy or D-J stent may not compromise the safety of PCNL and it decreases morbidity of the patient.

  20. Pump element for a tube pump

    DEFF Research Database (Denmark)

    2011-01-01

    The invention relates to a tube pump comprising a tube and a pump element inserted in the tube, where the pump element comprises a rod element and a first and a second non-return valve member positioned a distance apart on the rod element. The valve members are oriented in the same direction...... portion acts to alternately close and open the valve members thereby generating a fluid flow through the tube. The invention further relates to a pump element comprising at least two non-return valve members connected by a rod element, and for insertion in an at least partly flexible tube in such tube...... pump as mentioned above, thereby acting to generate a fluid flow through the tube upon repeated deformation of the tube between the two valve members. The pump element may comprise a connecting part for coupling to another tube and may comprise a sealing part establishing a fluid tight connection to a...

  1. Brand Placement in Establishing Corporate Identity - A University Example -

    Directory of Open Access Journals (Sweden)

    Saliha AĞAÇ

    2015-06-01

    Full Text Available With competition becoming ever fiercer, brands must conform to modern marketing and become more influential on consumer perceptions by developing strategies according to the needs and demands of consumers. Hence it is very important to determine how the br and is perceived and placed in the consumer’s mind. Branding is a key issue on the modern agenda. As universities have understood the importance of establishing corporate identity and brand placement, they have joined the race and begun developing social strategies to develop their brand values. These include establishing brand belongingness, advertising and promotions and efforts to make the university stand out among similar ones. Brand placement in the minds of users is attempted through the name, logo , colors, characters and fonts representing the university used on clothing, office material and similar. Brand placement efforts include definitions by consumers of the product or service or attempts to distinguish these from those of competitors. This r esearch deals with a clothing b rand representing a university, brand image and product perceptions as well as the brand placement efforts. The scanning method was used in the research. The brand of casual clothing used as an example for brand placement as well as similarly known brands were examined for their product variety, prices and consumer portfolios. Measurement devices were prepared for the brand placement of the apparel designed and produced for the university, and a pilot trial was performed. I n the pilot trial, a set of questions was asked to a group of randomly chosen 242 people, consisting of academics, university students and administrative staff. The data obta ined were analyzed using SPSS 16 .0. Findings were given in tables according to sta tus variables. The finding of the research indicate that in brand placing efforts, for the intended consumer the apparel’s fabric, stitching and print/embroidery quality, its price

  2. Hot tube atomic absorption spectrochemistry.

    Science.gov (United States)

    Woodriff, R; Stone, R W

    1968-07-01

    A small, commercially available atomic absorption instrument is used with a heated graphite tube for the atomic absorption analysis of liquid and solid silver samples. Operating conditions of the furnace are described and a sensitivity of about 5 ng of silver is reported. PMID:20068797

  3. Kundt's Tube Experiment Using Smartphones

    Science.gov (United States)

    Parolin, Sara Orsola; Pezzi, Giovanni

    2015-01-01

    This article deals with a modern version of Kundt's tube experiment. Using economic instruments and a couple of smartphones, it is possible to "see" nodes and antinodes of standing acoustic waves in a column of vibrating air and to measure the speed of sound.

  4. OurTube / David Talbot

    Index Scriptorium Estoniae

    Talbot, David

    2009-01-01

    USA California Ülikooli töötajate Abram Stern'i ja Michael Dale'i poolt 2005. a. algatatud USA kongressis peetud kõnede videoremiksidest ja nende poolt loodud veebisaidist Metavid.org. Ka YouTube keskkonnast ja wikipedia katsetustest muuta oma keskkond multimeedialisemaks

  5. Working session 1: Tubing degradation

    Energy Technology Data Exchange (ETDEWEB)

    Kharshafdjian, G. [Atomic Energy of Canada, Mississauga, Ontario (Canada); Turluer, G. [IPSN, Fontenay-aux-Roses (France)

    1997-02-01

    A general introductory overview of the purpose of the group and the general subject area of SG tubing degradation was given by the facilitator. The purpose of the session was described as to {open_quotes}develop conclusions and proposals on regulatory and technical needs required to deal with the issues of SG tubing degradation.{close_quotes} Types, locations and characteristics of tubing degradation in steam generators were briefly reviewed. The well-known synergistic effects of materials, environment, and stress and strain/strain rate, subsequently referred to by the acronym {open_quotes}MESS{close_quotes} by some of the group members, were noted. The element of time (i.e., evolution of these variables with time) was emphasized. It was also suggested that the group might want to consider the related topics of inspection capabilities, operational variables, degradation remedies, and validity of test data, and some background information in these areas was provided. The presentation given by Peter Millet during the Plenary Session was reviewed; Specifically, the chemical aspects and the degradation from the secondary side of the steam generator were noted. The main issues discussed during the October 1995 EPRI meeting on secondary side corrosion were reported, and a listing of the potential SG tube degradations was provided and discussed.

  6. Oscillatory flow in bifurcating tubes

    International Nuclear Information System (INIS)

    Respiratory fluid mechanics is characterized by flow through bifurcating, Y-shaped, tubes. Steady flow through such geometries has been studied in detail by several authors. However, the recent widespread use of high frequency mechanical assistance of ventilation has generated interest in unsteady flows. A symmetric, singly branching pipe has been constructed, with its bifurcation shaped to model pulmonary conditions. The form of the bifurcation is based on CAT scans of human tracheal carinas. Its features include an area change of the parent tube from circular to roughly elliptical near the junction, a pinch-off effect on the parent tube, smoothly curved outer walls at the junction, and a sharp flow divider. Parent and daughter tubes have an l/d ratio of > 50, so that entrance effects are avoided. In order to better understand the effects of unsteadiness, piston driven, laminar, purely oscillatory flow has been established in the pipe for a variety of Womersley numbers. By appropriate choices of flow frequency and amplitude, fluid viscosity, and pipe diameter, tracheal Reynolds and Womersley numbers have been matched for resting breathing (tidal volume of 600 ml to 0.25 Hz), high frequency breathing (50 ml at 5 Hz), and intermediate breathing levels

  7. Mechanical support for straw tubes

    International Nuclear Information System (INIS)

    A design is proposed for mounting a large number of straw tubes to form an SSC central tracking chamber. The assembly is precise and of very low mass. The fabrication is modular and can be carried out with a minimum of tooling and instrumentation. Testing of modules is possible prior to the final assembly. 4 figs

  8. NEI You Tube Videos: Amblyopia

    Medline Plus

    Full Text Available ... Supported by the NEI Research at NEI All Research at NEI Office of the Scientific Director Office of the Clinical Director Education Programs ... Health Information News and Events Grants and Funding Research at NEI Education ... NEI YouTube Videos: Amblyopia NEI ...

  9. X-ray tube arrangement

    International Nuclear Information System (INIS)

    An x-ray tube is described incorporating an elongated target/ anode over which the electron beam is deflected and from which x-rays are emitted. Improved methods of monitoring and controlling the amplitude of the beam deflection are presented. (U.K.)

  10. Resonance tube or lax vox?

    Czech Academy of Sciences Publication Activity Database

    Tyrmi, J.; Radolf, Vojtěch; Horáček, Jaromír; Laukkanen, A. M.

    Firenze: Firenze University Press, 2015 - (Manfredi, C.). s. 195-195 ISBN 978-88-6655-794-4. [Pan European Voice Conference : PEVOC /11./. 31.08.2015-02.09.2015, Firenze] R&D Projects: GA ČR(CZ) GAP101/12/1306 Institutional support: RVO:61388998 Keywords : phonation into tube * voice therapy * flow resistance * contact quotient Subject RIV: BI - Acoustics

  11. Welding the CNGS decay tube

    CERN Document Server

    Maximilien Brice

    2004-01-01

    3.6 km of welds were required for the 1 km long CERN Neutrinos to Gran Sasso (CNGS) decay tube, in which particles produced in the collision with a proton and a graphite target will decay into muons and muon neutrinos. Four highly skilled welders performed this delicate task.

  12. NEI You Tube Videos: Amblyopia

    Medline Plus

    Full Text Available ... Macular Degeneration Amblyopia Animations Blindness Cataract Convergence Insufficiency Diabetic Eye Disease Dilated Eye Exam Dry Eye For Kids Glaucoma Healthy Vision Tips Leber Congenital Amaurosis Low Vision Refractive Errors Retinopathy of Prematurity Science Spanish Videos Webinars NEI YouTube ...

  13. An Optimization Model for Product Placement on Product Listing Pages

    Directory of Open Access Journals (Sweden)

    Yan-Kwang Chen

    2014-01-01

    Full Text Available The design of product listing pages is a key component of Website design because it has significant influence on the sales volume on a Website. This study focuses on product placement in designing product listing pages. Product placement concerns how venders of online stores place their products over the product listing pages for maximization of profit. This problem is very similar to the offline shelf management problem. Since product information sources on a Web page are typically communicated through the text and image, visual stimuli such as color, shape, size, and spatial arrangement often have an effect on the visual attention of online shoppers and, in turn, influence their eventual purchase decisions. In view of the above, this study synthesizes the visual attention literature and theory of shelf-space allocation to develop a mathematical programming model with genetic algorithms for finding optimal solutions to the focused issue. The validity of the model is illustrated with example problems.

  14. Penile Corporeal Reconstruction during Difficult Placement of a Penile Prosthesis

    Directory of Open Access Journals (Sweden)

    Viet Q. Tran

    2008-01-01

    Full Text Available For some patients with impotence and concomitant severe tunical/corporeal tissue fibrosis, insertion of a penile prosthesis is the only option to restore erectile function. Closing the tunica over an inflatable penile prosthesis in these patients can be challenging. We review our previous study which included 15 patients with severe corporeal or tunical fibrosis who underwent corporeal reconstruction with autologous rectus fascia to allow placement of an inflatable penile prosthesis. At a mean follow-up of 18 months (range 12 to 64, all patients had a prosthesis that was functioning properly without evidence of separation, herniation, or erosion of the graft. Sexual activity resumed at a mean time of 9 weeks (range 8 to 10. There were no adverse events related to the graft or its harvest. Use of rectus fascia graft for coverage of a tunical defect during a difficult penile prosthesis placement is surgically feasible, safe, and efficacious.

  15. Optimized baffle and aperture placement in neutral beamlines

    Science.gov (United States)

    Stone, R.; Duffy, T.; Vetrovec, J.

    1983-11-01

    Most neutral beamlines contain an iron-core ion-bending magnet that requires shielding between the end of the neutralizer and this magnet. This shielding allows the gas pressure to drop prior to the beam entering the magnet and therefore reduces beam losses in this drift region. The beam losses are reduced even further by eliminating the iron-core magnet and the magnetic shielding altogether. The required bending field is supplied by current coils without the iron poles. In addition, placement of the baffles and apertures affects the cold gas entering the plasma region and the losses in the neutral beam due to re-ionization. The placement of the baffles which, determine the amount of pumping in each chamber, and the apertures, which determine the beam loss were varied. A baffler/aperture configuration is for either minimum cold gas into the plasma region or minimum beam losses, but not both.

  16. Temporary transvenous pacemaker placement in the Emergency Department.

    Science.gov (United States)

    Harrigan, Richard A; Chan, Theodore C; Moonblatt, Steven; Vilke, Gary M; Ufberg, Jacob W

    2007-01-01

    Emergency Department placement of a temporary transvenous cardiac pacemaker offers potential life-saving benefits, as the device can definitively control heart rate, ensure effective myocardial contractility, and provide adequate cardiac output in select circumstances. The procedure begins with establishment of central venous access, usually by a right internal jugular or left subclavian vein approach, although the femoral vein is an acceptable alternative, especially in patients who are more likely to bleed should vascular access become complicated. The indications for the procedure, as well as the equipment needed, are reviewed. Both blind and ECG-guided techniques of insertion are described. Methods of verification of pacemaker placement and function are discussed, as are the early complications of the procedure. PMID:17239740

  17. Technique of Peritoneal Catheter Placement under Fluoroscopic Guidance

    International Nuclear Information System (INIS)

    Peritoneal catheters are mainly used for peritoneal dialysis in patients with end-stage renal disease. Other uses of this catheter include intraperitoneal chemotherapy and gene therapy for ovarian cancer and draining of uncontrolled refractory ascites in patients with liver cirrhosis. Traditionally, surgeons place most of these peritoneal catheters either by laparoscopy or open laparotomy. We detail our percutaneous approach to placing peritoneal catheters using fluoroscopic guidance. We emphasize the use of additional ultrasound guidance, including gray scale and color Doppler ultrasound, to determine the safest puncture site and to guide the initial needle puncture in order to avoid bowel perforation and injury to epigastric artery. We present our experience in placing peritoneal catheters using this technique in 95 patients with various indications. Fluoroscopic guided percutaneous placement of peritoneal catheters is a safe, minimally invasive, and effective alternative to open surgical or laparoscopic placement.

  18. Endoscopic pancreatic duct stent placement for inflammatory pancreatic diseases

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    The role of endoscopic therapy in the management of pancreatic diseases is continuously evolving; at present most pathological conditions of the pancreas are successfully treated by endoscopic retrograde cholangiopancreatography (ERCP) or endoscopic ultrasound (EUS),or both. Endoscopic placement of stents has played and still plays a major role in the treatment of chronic pancreatitis, pseudocysts, pancreas divisum, main pancreatic duct injuries, pancreatic fistulae, complications of acute pancreatitis, recurrent idiopathic pancreatitis,and in the prevention of post-ERCP pancreatitis. These stents are currently routinely placed to reduce intraductal hypertension, bypass obstructing stones, restore lumen patency in cases with dominant, symptomatic strictures,seal main pancreatic duct disruption, drain pseudocysts or fluid collections, treat symptomatic major or minor papilla sphincter stenosis, and prevent procedure-induced acute pancreatitis. The present review aims at updating and discussing techniques, indications, and results of endoscopic pancreatic duct stent placement in acute and chronic inflammatory diseases of the pancreas.

  19. Optimized placement of nodes for target detection in sensor networks

    Institute of Scientific and Technical Information of China (English)

    HU Ning; ZHANG Deyun

    2007-01-01

    In order to improve the precision of the target detection in wireless sensor networks,a new approach based on genetic algorithm (GA) was proposed to optimize the placement of the sensor.The target location problem was transformed into locating a target at a grid point through modeling the sensor field as a grid of points.Moreover,the sensor placement problem was formulated as a combinatorial optimization problem,which is aimed at minimizing the maximum discrimination error under the restraints of limited cost and complete coverage.The GA approach uses binary coding to represent the location,and both single parent crossover operator and single parent mutation operator are used to improve its speed and efficiency.Experimental results have shown that a global optimal solution can be quickly obtained using the proposed method and the precision requirement for target location is satisfied.

  20. The Effect of Product Placement Marketing on Effectiveness of Internet Advertising

    Science.gov (United States)

    Liao, Hsiu-Li; Liu, Su-Houn; Pi, Shih-Ming; Chen, Hui-Ju

    Compared to the traditional way of doing advertising, such as ad Banners, internet product placement is now emerging as a promising strategy for advertisers to do their job effectively in this Web 2.0 era. Therefore, this study focuses on the effectiveness of product placement advertising on the Internet. The results show that product prominence (Subtle or Prominent) and presentation of the advertising (Video or Images) significantly impacts the effectiveness of product placement advertising on the Internet, including brand impression, advertising attitude, and intention to click. Product prominence and presentation of the advertisement have an interactive impact. Our findings indicated that presenting the product through videos will enhance higher levels of advertising attitude, brand impression, and intention to click than presenting it through still images. Subtle placements will increase the level of advertising attitude and intention to click more so than prominent placements. But prominent placements increase the brand impression more than the subtle placements.

  1. Rejection index for pressure tubes

    International Nuclear Information System (INIS)

    The objective of the present study was to establish a set of criteria (or Rejection Index) which could be used to decide whether a zirconium-2 1/2 w/o niobium pressure tube in a CANDU reactor should be removed from service due to in-service degradation. A critique of key issues associated with establishing a realistic rejection index was prepared. Areas of uncertainty in available information were identified and recommendations for further analysis and laboratory testing made. A Rejection Index based on the following limits has been recommended: 1) Limits related to design intent and normal operation: any garter spring must remain within the tolerance band specified for its design location; the annulus gas system must normally be operated in a circulating mode with a procedure in place for purging to prevent accumulation of deuterium. It must remain sensitive to leaks into any part of the systems; and pressure tube dimensions and distortions must be limited to maintain the fuel channels within the original design intent; 2) Limits related to defect tolerance: adequate time margins between occurrence of a leaking crack and unstable failure must be demonstrated for all fuel channels; long lap-type flaws are unacceptable; crack-like defects of any size are unacceptable; and score marks, frat marks and other defects with contoured profiles must fall below certain depth, length and stress intensity limits; and 3) Limits related to property degradation: at operating temperature each pressure tube must be demonstrated to have a critical length in excess of a stipulated value; the maximum equivalent hydrogen level in any pressure tube should not exceed a limit which should be defined taking into account the known history of that tube; the maximum equivalent hydrogen level in any rolled joint should not exceed a limit which is presently recommended as 200 ppm equivalent hydrogen; and the maximum diametral creep strain should be limited to less than 5%

  2. Bulk metallic glass tube casting

    International Nuclear Information System (INIS)

    Research highlights: → Tubular specimens of Zr55Cu30Al10Ni5 cast in custom arc-melting furnace. → Tilt casting supplemented by suction casting. → Bulk metallic glass formed only with optimized processing parameters. → Fully amorphous tubes with 1.8 mm wall thickness and 25 mm diameter. - Abstract: Tubular bulk metallic glass specimens were produced, using a custom-built combined arc-melting tilt-casting furnace. Zr55Cu30Al10Ni5 tubes with outer diameter of 25 mm and 0.8-3 mm wall thicknesses were cast, with both tilt and suction casting to ensure mold filling. Tilt casting was found to fill one side of the tube mold first, with the rest of the tube circumference filled subsequently by suction casting. Optimized casting parameters were required to fully fill the mold and ensure glass formation. Too small melt mass and too low arc power filled the mold only partially. However, too large melt mass and higher arc power which lead to the best mold filling also lead to partial crystallization. Variations in processing parameters were explored, until a glassy ring with 1.8 mm thickness was produced. Different sections of the as-cast ring were investigated by X-ray diffraction (XRD), differential scanning calorimetry (DSC), and instrumented indentation to ensure amorphous microstructure. Atomic force microscopy (AFM) was used to compare the surface qualities of the first- and last-filled sections. These measurements confirmed the glassy structure of the cast ring, and that, the tilt cast tube section consistently showed better surface quality than the suction cast section. Optimized casting parameters are required to fully realize the potential of directly manufacturing complex shapes out of high-purity bulk metallic glasses by tilt casting.

  3. Selecting utilities placement techniques in urban underground engineering

    OpenAIRE

    Curiel Esparza, Jorge; Cantó Perelló, Julián

    2013-01-01

    Placement of utilities has not been generally accomplished in any sustainable technique resulting in a veritable maze in high density urban areas. As underground space scarcity grows in our cities due to the increasing demands for utility services, subsurface facilities such as utility tunnels are becoming more efficient in providing the required infrastructure. There is a growing public awareness of aesthetic considerations and impatience with street cuts and their associated costs, traffic ...

  4. Asperisporium and Pantospora (Mycosphaerellaceae): epitypifications and phylogenetic placement

    OpenAIRE

    Minnis, A.M.; Kennedy, A.H.; Grenier, D.B.; Rehner, S.A.; Bischoff, J.F.

    2012-01-01

    The species-rich family Mycosphaerellaceae contains considerable morphological diversity and includes numerous anamorphic genera, many of which are economically important plant pathogens. Recent revisions and phylogenetic research have resulted in taxonomic instability. Ameliorating this problem requires phylogenetic placement of type species of key genera. We present an examination of the type species of the anamorphic Asperisporium and Pantospora. Cultures isolated from recent port intercep...

  5. Feedback and assessment for clinical placements: achieving the right balance

    OpenAIRE

    Burgess, Annette

    2015-01-01

    Annette Burgess, Craig Mellis Central Clinical School, Sydney Medical School, The University of Sydney, Sydney, NSW, Australia Abstract: During clinical placements, the provision of feedback forms an integral part of the learning process and enriches students' learning experiences. The purpose of feedback is to improve the learner's knowledge, skills, or behavior. Receipt of accurate feedback can help to narrow the gap between actual and desired performance. Effective and reg...

  6. Feedback and assessment for clinical placements: achieving the right balance

    OpenAIRE

    Burgess A; Mellis C

    2015-01-01

    Annette Burgess, Craig Mellis Central Clinical School, Sydney Medical School, The University of Sydney, Sydney, NSW, Australia Abstract: During clinical placements, the provision of feedback forms an integral part of the learning process and enriches students' learning experiences. The purpose of feedback is to improve the learner's knowledge, skills, or behavior. Receipt of accurate feedback can help to narrow the gap between actual and desired performance. Effective and regular fee...

  7. A Partnership Approach to Work Placement in Higher Education

    OpenAIRE

    Sheridan, Irene; Linehan, Margaret

    2013-01-01

    Abstract There is a perceived gap between traditional university education and a readiness to enter the workforce which is often addressed by the inclusion of a work-based learning experience within the undergraduate education process. The intention of the curriculum designers is that the work placement experience will provide learners with an opportunity to develop their employability skills and to apply the knowledge that they have gained within a practice setting. This practice-focused ...

  8. An improved simulated annealing algorithm for standard cell placement

    Science.gov (United States)

    Jones, Mark; Banerjee, Prithviraj

    1988-01-01

    Simulated annealing is a general purpose Monte Carlo optimization technique that was applied to the problem of placing standard logic cells in a VLSI ship so that the total interconnection wire length is minimized. An improved standard cell placement algorithm that takes advantage of the performance enhancements that appear to come from parallelizing the uniprocessor simulated annealing algorithm is presented. An outline of this algorithm is given.

  9. Wavelength Converters Placement in Optical Networks Using Bee Colony Optimization

    OpenAIRE

    MARKOVIC, G. Z.

    2016-01-01

    Wavelength converters placement (WCP) in all-optical WDM networks belongs to the class of hard combinatorial optimization problems. So far, this problem has been solved by various heuristic strategies or by application of metaheuristic approaches such as genetic algorithms (GA), particle swarm optimization (PSO), differential evolution (DE), etc. In this paper, we introduce the application of Bee Colony Optimization (BCO) metaheuristic to solve the WCP problem in all-optical WDM n...

  10. Alternatives to Industrial Work Placement at Dublin Institute of Technology

    OpenAIRE

    Bates, Catherine; Gamble, Elena

    2011-01-01

    In the current economic crisis, higher education graduates need transferable professional skills more than ever. They need resourcefulness, an ability to work reflectively, a sense of civic awareness and an impressive curriculum vitae. This case study analyses how Dublin Institute of Technology’s Programme for Students Learning With Communities provides cost-effective, sustainable solutions to these needs, offering an alternative to industrial work placement. Community-based learning and rese...

  11. Required Steps of Managing International Equity Placement Strategic Alliance

    OpenAIRE

    Harimukti Wandebori; Erik Joost de Bruijn; Harm-Jan Steenhuis

    2012-01-01

    The purpose of the research is to unravel the steps of managing international equity placement strategic alliance (IEPSA). The steps of managing an IEPSA are obtained by conducting theoretical review. The theoretical reviews consist of theory of strategic alliance; definition, classification, and finding definition of an IEPSA, political and analytical considerations and the necessary steps. These steps of managing IEPSA can be classified into analyzing of macro consideration, micro considera...

  12. GroFi: Large-scale fiber placement research facility

    OpenAIRE

    Krombholz, Christian; Kruse, Felix; Wiedemann, Martin

    2016-01-01

    GroFi is a large research facility operated by the German Aerospace Center’s Center for Lightweight-Production-Technology in Stade. A combination of different layup technologies namely (dry) fiber placement and tape laying, allows the development and validation of new production technologies and processes for large-scale composite components. Due to the use of coordinated and simultaneously working layup units a high flexibility of the research platform is achieved. This allows the investiga...

  13. Peripherally inserted central catheter placement using the Sonic Flashlight

    OpenAIRE

    Amesur, Nikhil; Wang, David; Chang, Wilson; Weiser, David; Klatzky, Roberta; Shukla, Gaurav; Stetten, George

    2009-01-01

    The Sonic Flashlight is an ultrasound device that projects real-time ultrasound images into patients using a semi-reflective/transparent mirror. We evaluated the feasibility of using the Sonic Flashlight for clinical PICC placements, originally with the mirror located inside a sterile cover (15 patients), then with the mirror outside (11 patients). Successful access was obtained in all cases. Results show that this new design improved visibility, as judged subjectively first-hand and in photo...

  14. Stressmeter placement at spent fuel test in climax granite

    International Nuclear Information System (INIS)

    Vibrating wire stressmeters were installed in the Spent Fuel Facility at the Nevada Test Site. These stressmeters will measure the changes in in situ stress during the five-year spent fuel test. Before installation, laboratory tests were conducted to study reproducibility of placement and to develop a program hopefully to reduce corrosion of the stressmeters while in place at the Spent Fuel Facility. These laboratory tests are discussed along with the installation of the stressmeters at the Spent Fuel Facility

  15. Optimal DG Placement in Distribution Networks Using Intelligent Systems

    OpenAIRE

    Majid Davoodi; Farzad Razavi; Mohsen Davoudi; Ali Aref

    2012-01-01

    Distributed Generation (DG) unlike centralized electrical generation aims to generate electrical energy on small scale as near as possible to the load centers, interchanging electric power with the network. Moreover, DGs influence distribution system parameters such as reliability, loss reduction and efficiency while they are highly dependent on their situation in the distribution network. This paper focuses on optimal placement and estimation of DG capacity for installation and takes more nu...

  16. Association Rule Generation Using Apriori Mend Algorithm for Students Placement

    OpenAIRE

    Magdalene Delighta Angeline; Samuel Peter James

    2012-01-01

    The association rules are used to find interesting rules from large collections of data which expresses an association between items or sets of items. The usefulness of this technique is to address typical data mining problems is best. In order to show the effective relation of data, student placement was chosen and experiments were carried out which shows the best rules with 92.86% confidence while comparing with the previous Apriori approach. In this paper Apriori Mend algorithm was discuss...

  17. Teacher and student views regarding the placement test

    OpenAIRE

    Argon, Türkan; Soysal, Aylin

    2012-01-01

    The purpose of this study is to identify teacher and student views regarding the Placement Test (SBS). The research was undertaken with primary school teachers from Bolu central district (n=100) and students who were given the test during (n=100) 2009-2010 educational year. The study employing the survey model utilizes qualitative research methods. Data was collected by using interview forms which were later analyzed by content analysis. At the end of the study it was found that SBS creates f...

  18. Teacher and student views regarding the placement test

    OpenAIRE

    Türkan Argon; Aylin Soysal

    2012-01-01

    The purpose of this study is to identify teacher and student views regarding the Placement Test (SBS). The research was undertaken with primary school teachers from Bolu central district (n=100) and students who were given the test during (n=100) 2009-2010 educational year. The study employing the survey model utilizes qualitative research methods. Data was collected by using interview forms which were later analyzed by content analysis. At the end of the study it was found that SBS creates ...

  19. Complications of stent placement for benign stricture of gastrointestinal tract

    Institute of Scientific and Technical Information of China (English)

    Ying-Sheng Cheng; Ming-Hua Li; Wei-Xiong Chen; Ni-Wei Chen; Qi-Xin Zhuang; Ke-Zhong Shang

    2004-01-01

    AIM: To observe the frequent complications of stent placement for stricture of the gastrointestinal tract and to find proper treatment.METHODS: A total number of 140 stents were inserted in 138 patients with benign stricture of the gastrointestinal tract. The procedure was completed under fluoroscopy in all of the patients.RESULTS: Stents were successfully placed in all the 138 patients. Pains occurred in 23 patients (16.7%), slight or dull pains were found in 21 patients and severe chest pain in 2 respectively.For the former type of pain, the patients received only analgesia or even no treatment, while peridural anesthesics was conducted for the latter condition. Reflux occurred in 16 of these patients (11.6%) after stent placement. It was managed by common antireflux procedures. Gastrointestinal bleeding occurred in 13 patients (9.4%), and was treated by hemostat. Restenosis of the gastrointestinal tract occurred in 8 patients (5.8%), and was apparently associated with hyperplasia of granulation tissue. In 2 patients, the second stent was placed under X-ray guidance. The granulation tissue was removed by cauterization through hot-node therapy under gastroscope guidance in 3 patients, and surgical reconstruction was performed in another 3 patients. Stent migration occurredin 5 patients (3.6%), and were extracted with the aid of a gastroscope. Food-bolus obstruction was encountered in 2 patients (1.4%) and was treated by endoscope removal. No perforation occurred in all patients.CONCLUSION: Frequent complications after stent placement for benign stricture of the gastrointestinal tract include pain,reflux, bleeding, restenosis, stent migration and food-bolus obstruction. They can be treated by drugs, the second stent placement or gastroscopic procedures according to the specific conditions.

  20. Decentralized-feedback pole placement of linear systems

    Science.gov (United States)

    Wang, X.; Martin, C. F.; Gilliam, D.; Byrnes, C. I.

    1992-01-01

    A projectile product spaces model is used to analyze decentralized systems. The degree of the pole placement map is computed. The conditions under which the degree is odd are also given. Twin lift systems are studied. It is proved that the poles of a twin lift system can be assigned to any values by local static and local dynamic feedback laws if and only if the system is jointly controllable.

  1. Randomizing task placement does not randomize traffic (enough)

    OpenAIRE

    Jokanovic, Ana; Prisacari, Bogdan; Rodriguez, German; Minkenberg, Cyriel

    2013-01-01

    Dragonflies are one of the most promising topologies for the Exascale effort for their scalability and cost. Dragonflies achieve very high throughput under uniform traffic, but have a pathological behavior under other regular traffic patterns, some of them very common in HPC applications. A recent study showed that randomization of task placement can make pathological, regular (multi-dimensional stencil) traffic patterns behave similar to uniform traffic. In this work we provide a theoret...

  2. Product placement e libertà di espressione

    OpenAIRE

    Fiori, Laura

    2008-01-01

    Object of the search is the advertising phenomenon of the "product placement", with reference to that it has been investigated legality’s limits, as well as the relationship with the constitutionally protected liberty of expression. Particularly, it has been analyzed, in first place, the problem of the relationship between the freedom of expression and the liberty of economic initiative, with particular reference to the different circles of guardianship to these prepared:...

  3. Accidental Implant Screwdriver Ingestion: A Rare Complication during Implant Placement.

    OpenAIRE

    Anshul Jain; Baliga, Shridhar D

    2014-01-01

    One of the complications during a routine dental implant placement is accidental ingestion of the implant instruments, which can happen when proper precautions are not taken. Appropriate radiographs should be taken to locate the correct position of foreign body; usually the foreign body passes asymptomatically from gastrointestinal tract but sometimes it may lead to intestinal obstruction, perforations and impactions. The aim of this article is to report accidental ingestion of 19 mm long scr...

  4. Endoscopic pancreatic duct stent placement for inflammatory pancreatic diseases

    OpenAIRE

    Testoni, Pier Alberto

    2007-01-01

    The role of endoscopic therapy in the management of pancreatic diseases is continuously evolving; at present most pathological conditions of the pancreas are successfully treated by endoscopic retrograde cholangio-pancreatography (ERCP) or endoscopic ultrasound (EUS), or both. Endoscopic placement of stents has played and still plays a major role in the treatment of chronic pancreatitis, pseudocysts, pancreas divisum, main pancreatic duct injuries, pancreatic fistulae, complications of acute ...

  5. Required Steps of Managing International Equity Placement Strategic Alliance

    Directory of Open Access Journals (Sweden)

    Harimukti Wandebori

    2012-01-01

    Full Text Available The purpose of the research is to unravel the steps of managing international equity placement strategic alliance (IEPSA. The steps of managing an IEPSA are obtained by conducting theoretical review. The theoretical reviews consist of theory of strategic alliance; definition, classification, and finding definition of an IEPSA, political and analytical considerations and the necessary steps. These steps of managing IEPSA can be classified into analyzing of macro consideration, micro consideration, domestic company’s stakeholder support, cultural understanding, strategic planning, internal support, human resource management, organizational arrangement, management control system, evolved cultural understanding, and evaluating results. In this research, the domestic partners who formed the IEPSAs are limited to State-Owned Enterprises (SOEs. The IEPSA was one of the means of privatization. The research will be beneficial for both foreign and domestic partners who form an IEPSA in the previous SOEs. By knowing the steps of managing the IEPSA both partners will be able to secure a successful implementation of IEPSA. By identifying the steps of managing the IEPSA, the stakeholder will not see IEPSA as threat rather as an opportunity to improve performance, to create synergy, and generate benefits for both partners and stakeholder. By knowing the necessary steps of managing the IEPSA, the stakeholder including society and politician will envisage the IEPSA as a means of effectively improving the SOEs’ performances.The research was espected to provide contributions for the research on strategic alliances. Apparently, there exist no literatures discussing about IEPSA in the domain of strategic alliances. Keywords: strategic alliance, equity placement, international equity placement strategic alliance, privatization, steps of international equity placement strategic alliance, state-owned enterprises

  6. Sensor Placement for Fault Diagnosis Based On Causal Computations

    OpenAIRE

    Rosich, Albert; Frisk, Erik; Åslund, Jan; Sarrate, Ramon; Nejjari, Fatiha

    2009-01-01

    This work develops a methodology to solve the sensor placement problem for fault detection and isolation. The proposed methodology is suitable to handle highly non-linear and large scale systems since it is based on structural models. Furthermore, causality is assigned in those variable-equation relations that the variable can be computed from the equation in order to guarantee the computability of the unknown variables in the residual generation design. Finally, the developed methodology is ...

  7. Static Approximation of MPI Communication Graphs for Optimized Process Placement

    OpenAIRE

    McPherson, Andrew J; Nagarajan, Vijay; Cintra, Marcelo

    2014-01-01

    Message Passing Interface (MPI) is the de facto standard for programming large scale parallel programs. Static understanding of MPI programs informs optimizations including process placement and communication/computation overlap, and debugging. In this paper, we present a fully context and flow sensitive, interprocedural, best-effort analysis framework to staticallyanalyze MPI programs. We instantiate this to determine an approximation of the point-to-point communication graph of an MPI progr...

  8. Mediation Role of Attitude towards Product Placement in Social Media

    OpenAIRE

    Azaze-Azizi Abdul Adis; Grace Phang Ing; Zaiton Osman; Izyanti Awang Razli; Yi Xuan Pang; Stephen Laison Sondoh Jr.; Mohd Rizwan Abdul Majid

    2015-01-01

    The present paper empirically examines consumer attitude and behavioral intention structures in social media context, particularly focusing on Gen Ys who are the world’s largest population group. Three antecedent factors (i.e. perceived relevance, perceived value and perceived credibility) were closely examined for their influences on attitude towards product placement (App) and purchase intention. App was proposed to serve as a mediator between these antecedent factors and purchase intention...

  9. Feeding Tube Placement in Patients with Advanced Dementia: The Beliefs and Practice Patterns of Speech-Language Pathologists

    Science.gov (United States)

    Sharp, Helen M.; Shega, Joseph W.

    2009-01-01

    Purpose: To describe the beliefs and practices of speech-language pathologists (SLPs) about the use of percutaneous endoscopic gastrostomy (PEG) among patients with advanced dementia and dysphagia. Method: A survey was mailed to a geographically stratified random sample of 1,050 medical SLPs. Results: The response rate was 57%, and 326 surveys met…

  10. The Scientific Impact of Nations: Journal Placement and Citation Performance

    Science.gov (United States)

    Smith, Matthew J.; Weinberger, Cody; Bruna, Emilio M.; Allesina, Stefano

    2014-01-01

    International collaboration is becoming increasingly important for the advancement of science. To gain a more precise understanding of how factors such as international collaboration influence publication success, we divide publication success into two categories: journal placement and citation performance. Analyzing all papers published between 1996 and 2012 in eight disciplines, we find that those with more countries in their affiliations performed better in both categories. Furthermore, specific countries vary in their effects both individually and in combination. Finally, we look at the relationship between national output (in papers published) and input (in citations received) over the 17 years, expanding upon prior depictions by also plotting an expected proportion of citations based on Journal Placement. Discrepancies between this expectation and the realized proportion of citations illuminate trends in performance, such as the decline of the Global North in response to rapidly developing countries, especially China. Yet, most countries' show little to no discrepancy, meaning that, in most cases, citation proportion can be predicted by Journal Placement alone. This reveals an extreme asymmetry between the opinions of a few reviewers and the degree to which paper acceptance and citation rates influence career advancement. PMID:25296039

  11. Stent placement in arteriovenous fistula : an experimental study

    International Nuclear Information System (INIS)

    To determine the efficacy of metallic stents in the treatment of experimentally created carotid-jugular fistulas. Materials and Methods : Carotid-jugular fistulas were constructed surgically in four mongrel swines. Three Wallstents (Schneider, Bulbanch, Switzerland), 6mm in diameter and 23mm in length, and one Nir stent (Boston Scientific Corporation, Boston, U.S.A.), 3-5mm in diameter and 16mm in length, were placedendovascularly across the fistula holes within the carotid artery. Carotid angiography was performed before,immediately after, and 1-3 months after stent placement. Fistula specimens were obtained after final angiography and gross and microscopic examination was performed. Results : Angiography demonstrated decreased flow through the fistula immediately after stent placement. During follow-up, flow through the fistula decreased progressively but complete closure did not occur. Carotid arteries p in which Wallstents were placed were patent throughout the follow-up period. A carotid artery in which a Nir stent was used showed no decreased flow during follow-up angiography lasting two months. Pathologically, a thin layer of endothelium covered the stent wires; there was a transitional zone between the fibrous connective tissue of organizing thrombus, and endothelial proliferation occurred in the overlying fistula hole. Conclusions : Stent placement effectively reduced flow through the fistulas but during the ensuing three months closure did not occur. Occlusion was then progressive.Pathologically, intimal proliferation arose from the organizing thrombus on the surface of the stent mesh

  12. Optimum distributed generation placement with voltage sag effect minimization

    International Nuclear Information System (INIS)

    Highlights: ► A new optimal distributed generation placement algorithm is proposed. ► Optimal number, sizes and locations of the DGs are determined. ► Technical factors like loss, voltage sag problem are minimized. ► The percentage savings are optimized. - Abstract: The present paper proposes a new formulation for the optimum distributed generator (DG) placement problem which considers a hybrid combination of technical factors, like minimization of the line loss, reduction in the voltage sag problem, etc., and economical factors, like installation and maintenance cost of the DGs. The new formulation proposed is inspired by the idea that the optimum placement of the DGs can help in reducing and mitigating voltage dips in low voltage distribution networks. The problem is configured as a multi-objective, constrained optimization problem, where the optimal number of DGs, along with their sizes and bus locations, are simultaneously obtained. This problem has been solved using genetic algorithm, a traditionally popular stochastic optimization algorithm. A few benchmark systems radial and networked (like 34-bus radial distribution system, 30 bus loop distribution system and IEEE 14 bus system) are considered as the case study where the effectiveness of the proposed algorithm is aptly demonstrated.

  13. The scientific impact of nations: journal placement and citation performance.

    Directory of Open Access Journals (Sweden)

    Matthew J Smith

    Full Text Available International collaboration is becoming increasingly important for the advancement of science. To gain a more precise understanding of how factors such as international collaboration influence publication success, we divide publication success into two categories: journal placement and citation performance. Analyzing all papers published between 1996 and 2012 in eight disciplines, we find that those with more countries in their affiliations performed better in both categories. Furthermore, specific countries vary in their effects both individually and in combination. Finally, we look at the relationship between national output (in papers published and input (in citations received over the 17 years, expanding upon prior depictions by also plotting an expected proportion of citations based on Journal Placement. Discrepancies between this expectation and the realized proportion of citations illuminate trends in performance, such as the decline of the Global North in response to rapidly developing countries, especially China. Yet, most countries' show little to no discrepancy, meaning that, in most cases, citation proportion can be predicted by Journal Placement alone. This reveals an extreme asymmetry between the opinions of a few reviewers and the degree to which paper acceptance and citation rates influence career advancement.

  14. Asset Management Based Distributed Generation Placement from Load Growth Viewpoint

    Directory of Open Access Journals (Sweden)

    majid ghani varzaneh

    2014-10-01

    Full Text Available In this paper, by presenting the asset management model, it is tried to investigate the importance of distributed generation (DG unit placement from radial distribution system reliability indices sensitivity viewpoint and then DG placement will be carried out. Asset management model is designed and explained to maximize the benefit of distribution companies for invested capital. As the value of distribution system reliability indices depend on customers load pattern, any change in customers load pattern causes changes in distribution system reliability indices. One of the factors that changes customers load pattern, is load growth. With considering that the system hardware characteristics are being constant, the values of reliability indices are also highly dependent on load distribution. Therefore, for assessing the current studies the level of validity and the adequacy of system in future, current load distribution and load growth in future should be studied. In this paper, with optimal placement of DG, it is tried to minimize the distribution system reliability indices sensitivity in accordance with load growth in different load patterns.

  15. Image guided placement of temporary anchorage devices for tooth movement

    Energy Technology Data Exchange (ETDEWEB)

    Bahl-Palomo, L.; Bissada, N. [Case Western Reserve Univ. School of Dental Medicine, Dept. of Periodontics, Cleveland, OH (United States); Palomo, J.M.; Hans, M.G. [Case Western Reserve Univ. School of Dental Medicine, Dept. of Orthodontics, Cleveland, OH (United States)

    2007-06-15

    The aim of this project is to develop an image guided protocol for placement of a temporary anchorage device without surgically reflecting a mucoperiosteal flap. Eighteen orthodontic cases were selected for skeletal anchorage from the department of orthodontics at Case University. CBCT images of the subjects were taken using the Hitachi CB MercuRay system set at 15 mA, 120 kVp. CBCT images evaluated the ideal location for TAD placement in three dimensions. Horizontal and vertical linear measurements were taken from fixed dental landmarks to clearly define the location for placement. Transverse slices were used to evaluate the thickness of the buccal plate. Using the transverse view, the angle of insertion was determined such that the maximum buccal plate surface area would contact the screw. TADs were placed in the optimum location, with the most appropriate angle of insertion using a closed approach and with minimal local anesthesia and without flap elevation. Results: All TADs were placed without anatomic encroachment and enabled fixed orthodontic anchorage. (orig.)

  16. Image guided placement of temporary anchorage devices for tooth movement

    International Nuclear Information System (INIS)

    The aim of this project is to develop an image guided protocol for placement of a temporary anchorage device without surgically reflecting a mucoperiosteal flap. Eighteen orthodontic cases were selected for skeletal anchorage from the department of orthodontics at Case University. CBCT images of the subjects were taken using the Hitachi CB MercuRay system set at 15 mA, 120 kVp. CBCT images evaluated the ideal location for TAD placement in three dimensions. Horizontal and vertical linear measurements were taken from fixed dental landmarks to clearly define the location for placement. Transverse slices were used to evaluate the thickness of the buccal plate. Using the transverse view, the angle of insertion was determined such that the maximum buccal plate surface area would contact the screw. TADs were placed in the optimum location, with the most appropriate angle of insertion using a closed approach and with minimal local anesthesia and without flap elevation. Results: All TADs were placed without anatomic encroachment and enabled fixed orthodontic anchorage. (orig.)

  17. Oxy-acetylene driven laboratory scale shock tubes for studying blast wave effects

    CERN Document Server

    Courtney, Michael

    2011-01-01

    Instrumentation is needed to produce realistic blast waves in a laboratory setting. This paper describes the development and characterization of oxy-acetylene driven, laboratory scale shock tubes for use in studying blast injury, candidate armor materials, and material properties at blast loading rates. The pressure-time profiles show a true shock front and exponential decay characteristic of blast waves and have relevant durations. The modular design includes shock tube diameters of 27 mm and 41 mm, and a selection of peak pressures from 204 kPa to 920 kPa can be produced by selection of the driver section diameter and placement of the test sample. Characterization studies of several driver/driven section combinations showed consistent results, with peak pressures having 0.8 - 6.9 percent uncertainty in the mean. This shock tube design provides a more realistic blast profile than current air-driven shock tubes. In addition, operation does not require specialized personnel or facilities like most blast-driven...

  18. The accessory fallopian tube: A rare anomaly

    Directory of Open Access Journals (Sweden)

    Kusum R Gandhi

    2012-01-01

    Full Text Available This paper presents a rare anatomical variation in the form of accessory fallopian tube on right side. The duplication of fallopian tube was observed in a 34-year-old female during routine undergraduate dissection in our department. Fallopian tube is the part of uterus that carries the ovum from the ovary to the uterus. Accessory fallopian tube is the congenital anomaly attached to the ampullary part of main tube. This accessory tube is common site of pyosalpinx, hydrosalpinx, cystic swelling and torsion. The ovum released by the ovary may also be captured by the blind accessory tube leading to infertility or ectopic pregnancy. Hence, all patients of infertility or pelvic inflammatory disease should be screened to rule out the presence of accessory fallopian tube and if encountered should be removed.

  19. Physics of particles in the rotating tube

    OpenAIRE

    Pardy, Miroslav

    2011-01-01

    The classical and the quantum motion of a massive body in the rotating tube is considered. Photon is included. The spin motion described by the Bargmann-Michel-Telegdi equation is considered in the rotation tube and rotating system.

  20. Chemical cleaning specification: few tube test model

    International Nuclear Information System (INIS)

    The specification is for the waterside chemical cleaning of the 2 1/4 Cr - 1 Mo steel steam generator tubes. It describes the reagents and conditions for post-chemical cleaning passivation of the evaporator tubes

  1. Method of tube plate outlet replacement

    International Nuclear Information System (INIS)

    Leaking or defective welded joints of tube plate outlets encountered during nuclear installation operation must be repaired. A method is suggested in which the defective tube plate outlets are first sealed below the cutting site to protect the tube plate from the penetration of dirt and then cut off. The remaining part of the tubes is cleaned. Extension tubes are then welded using argon arc electrode welding. They are shortened to required lengths and the cleaned tube plate is removed. The tube ends shall be calibration rolled and welded manually in two passes with a non-melting electrode using argon arc welding, the first pass without, the second pass with a filler wire. The ends of the tubes shall then be closed by rolling, leak tests shall be conducted and the plugs removed. (M.D.)

  2. Dynamics Calculation of Travel Wave Tube

    Institute of Scientific and Technical Information of China (English)

    2011-01-01

    During the dynamics calculating of the travel tube, we must obtain the field map in the tube. The field map can be affected by not only the beam loading, but also the attenuation coefficient. The calculation of the attenuation coefficient

  3. Ultrasonic testing of steam generator tubes

    International Nuclear Information System (INIS)

    A system is developed for inspection of steam generator tube, especially near the tube plate. Imaging, thickness measurement, radial profilometry, longitudinal and circonferential crack detection and welded joints testing are reviewed

  4. Tube Thoracostomy: Complications and Its Management

    OpenAIRE

    Chinenye Kesieme; Eshiobo Irekpita; Nze Jebbin; Ndubueze Ezemba; Andrew Dongo; Kesieme, Emeka B.

    2011-01-01

    Background. Tube thoracostomy is widely used throughout the medical, surgical, and critical care specialities. It is generally used to drain pleural collections either as elective or emergency. Complications resulting from tube thoracostomy can occasionally be life threatening. Aim. To present an update on the complications and management of complications of tube thoracostomy. Methods. A review of the publications obtained from Medline search, medical libraries, and Google on tube thoracostom...

  5. Tube morphogenesis: closure, but many openings remain

    OpenAIRE

    Nelson, W. James

    2003-01-01

    Epithelial and endothelial tubes form the basic structure of many organs and tissues in the fruit fly Drosophila melanogaster, the nematode Caenorhabditis elegans, zebrafish and mammals. Comparison of how tubes form during development defines several pathways that generate a single unbranched tube or dichotomously branching tubular networks. The formation of tubes can be induced directly by intrinsic signals within epithelial primordia or by inductive signaling between adjacent epithelia and ...

  6. Ceramic vacuum tubes for geothermal well logging

    Energy Technology Data Exchange (ETDEWEB)

    Kelly, R.D.

    1977-01-01

    Useful design data acquired in the evaluation of ceramic vacuum tubes for the development of a 500/sup 0/C instrumentation amplifier are presented. The general requirements for ceramic vacuum tubes are discussed for application to the development of high temperature well logs. Commercially available tubes are described and future contract activities that specifically relate to ceramic vacuum tubes are detailed. Supplemental data are presented in the appendix.

  7. Potential risk of malposition of nasogastric tube using nose-ear-xiphoid measurement.

    Directory of Open Access Journals (Sweden)

    Yen-Chun Chen

    Full Text Available BACKGROUND: Correct placement of nasogastric tubes provide proper functionality and maximize benefit and minimize risk. The Nose-Ear-Xiphoid (NEX body surface estimate method is a long-lasting technique, and this study was conducted to evaluate the correlation between NEX method and the secure insertion depth of nasogastric tube. MATERIALS AND METHODS: Thirty patients with nasogastric tube insertion who received whole body positron emission tomography with computerized tomography scan (PET-CT were recruited. All data were gathered in the image center, which included Nose-Ear (NE, Ear-Xiphoid (EX, Nose-Ear-Xiphoid (NEX, glabella-xiphoid (GX and glabella-umbilicus (GU lengths. The distances of the inserted portion of the nasogastric tube between the cardiac and the nostril were measured by multiplanar reconstruction algorithm. RESULTS: Only one patient successfully placed all side-holes into the stomach while using NEX method to estimate inserting depth. Twenty-nine patients (96.7% failed to place correctly. Fourteen participants had one or more side-holes in both the esophagus and the stomach sides. Fifteen patients could not pass through any side-hole across the gastroesophageal junction. They had shorter EX distances (p = 0.02, but no difference among the NE distances. Body height had the highest statistical correlation with nasogastric tube length (adjusted R(2 = 0.459, as compared with the NEX, GX and GU body surface methods. CONCLUSION: This study suggests that NEX method is inappropriate for adult patients to estimate the ideal inserting length of nasogastric tube. Physicians should realize these underinsertions with any side-hole above the gastroesophageal junctions may increase the potential risk of complications.

  8. Choledochorraphy (primary repair) versus t-tube drainage after open choledochotomy

    International Nuclear Information System (INIS)

    Background: T-tube drainage used to be standard practice after surgical choledochotomy, but there is now a tendency in some canters to close the common bile duct primarily. This study was designed to compare the clinical results of primary closure with T-tube drainage after open choledocotomy and assess the safety of primary closure for future application. Methods: This study was conducted at surgical Unit-3, ward 26 Jinnah Postgraduate Medical Centre Karachi, from January 2007 to January 2008. Forty patients were included in this study out of which 20 underwent primary closure and 20 T-tube placements. It was Quasi-experimental, non-probability, purposive sampling. Main outcome measures were operating time, duration of hospital stay, and postoperative complications. SPSS-10 was used for data analysis. Results: The age of patients in the study ranged from 29-83 years. There were 3 male while 37 female patients. Group-1 consisted of 20 patients underwent primary closure after choledocotomy, while Group-2 also consisted of 20 patients underwent T-tube drainage after duct exploration. Mean hospital stay in Group-1 patients was 7.63 days while in group 2 it was 13.6 days. Overall complication rate in group 1 was 15%, biliary leakage in 1 (5%), jaundice in 1 (5%), wound infection in 1 (5%). No re-exploration was required in Group-1. In Group-2 overall complication rate was 30%, biliary leakage in 2 (2%), jaundice in 1 (5%), dislodgement of T-tube in 1 (5%), wound infection in 1 (5%), and sepsis in 1 (5%) patients. Re-exploration was done in one patient. Conclusion: Primary closure of Common Bile Duct (CBD) is a safe and cost-effective alternative procedure to routine T-tube drainage after open choledocotomy. (author)

  9. The Fuge Tube Diode Array Spectrophotometer

    Science.gov (United States)

    Arneson, B. T.; Long, S. R.; Stewart, K. K.; Lagowski, J. J.

    2008-01-01

    We present the details for adapting a diode array UV-vis spectrophotometer to incorporate the use of polypropylene microcentrifuge tubes--fuge tubes--as cuvettes. Optical data are presented validating that the polyethylene fuge tubes are equivalent to the standard square cross section polystyrene or glass cuvettes generally used in…

  10. Welding device inside a small diameter tube

    International Nuclear Information System (INIS)

    The orbital welding tool is supported in a socket at the end of a flexible tube. A motor rotating the head is placed in a casing fixed to the other end of the flexible tube and rotates the welding tool by the intermediary of a flexible transmission. A second flexible tube fixed to the casing permits the translation of the welding tool

  11. Inclusive spectra of hadrons created by color tube fission 1. Probability of tube fission

    OpenAIRE

    Gedalin, E. V.

    1997-01-01

    The probability of color tube fission that includes the tube surface small oscillation corrections is obtained with pre-exponential factor accuracy on the basis of previously constructed color tube model. Using these expressions the probability of the tube fission in $n$ point is obtained that is the basis for calculation of inclusive spectra of produced hadrons.

  12. Control rod guide tube assembly

    International Nuclear Information System (INIS)

    An improved fuel assembly is described as consisting of a sleeve that engages one end of a control rod guide tube essentially fixing the guide tube to one of the fuel assembly end structures. The end of the sleeve protrudes above the surface of the end fitting. The outer surface of the sleeve has a peripheral groove that engages the resilient sides of a cellular grid or lattice shaped lock. This lock fixes the sleeve in position between the various elements that comprise the end fitting, thereby eliminating a profusion of costly and potentially troublesome nuts, threaded studs and the like that are frequently employed in the fuel assemblies that are presently in use

  13. Microstructural degradation in compound tubes

    Energy Technology Data Exchange (ETDEWEB)

    Salonen, J.; Auerkari, P. [VTT Manufacturing Technology, Espoo (Finland)

    1996-12-31

    In order to quantify microstructural degradation at high temperatures, samples of SA 210 / AISI 304 L compound tube material were annealed in the temperature range 540-720 deg C for 1 to 1 000 hours. The hardness of the annealed material was measured and the micro structure of the samples was investigated with optical and scanning electron microscopy. Microstructural degradation was characterised by the carbide structure in the ferritic-pearlitic base material and by the depth of decarburised and carburised zones of the compound tube interface. The observed changes were quantified in terms of their time and temperature dependence and diffusion coefficients of the process. The results can be used in estimating the extent of thermal exposure of high-temperature components after long-term service or after incidences of overheating. (orig.) (4 refs.)

  14. HIGH CURRENT COAXIAL PHOTOMULTIPLIER TUBE

    Science.gov (United States)

    Glass, N.W.

    1960-01-19

    A medium-gain photomultiplier tube having high current output, fast rise- time, and matched output impedance was developed. The photomultiplier tube comprises an elongated cylindrical envelope, a cylindrical anode supported at the axis of the envelope, a plurality of elongated spaced opaque areas on the envelope, and a plurality of light admitting windows. A photo-cathode is supported adjacent to each of the windows, and a plurality of secondary emissive dynodes are arranged in two types of radial arrays which are alternately positioned to fill the annular space between the anode and the envelope. The dynodes are in an array being radially staggered with respect to the dynodes in the adjacent array, the dynodes each having a portion arranged at an angle with respect to the electron path, such that electrons emitted by each cathode undergo multiplication upon impingement on a dynode and redirected flight to the next adjacent dynode.

  15. Ionization tube simmer current circuit

    Science.gov (United States)

    Steinkraus, Jr., Robert F.

    1994-01-01

    A highly efficient flash lamp simmer current circuit utilizes a fifty percent duty cycle square wave pulse generator to pass a current over a current limiting inductor to a full wave rectifier. The DC output of the rectifier is then passed over a voltage smoothing capacitor through a reverse current blocking diode to a flash lamp tube to sustain ionization in the tube between discharges via a small simmer current. An alternate embodiment of the circuit combines the pulse generator and inductor in the form of an FET off line square wave generator with an impedance limited step up output transformer which is then applied to the full wave rectifier as before to yield a similar simmer current.

  16. Scintillation counter: photomultiplier tube alignment

    International Nuclear Information System (INIS)

    A scintillation counter, particularly for counting gamma ray photons, includes a massive lead radiation shield surrounding a sample-receiving zone. The shield is disassembleable into a plurality of segments to allow facile installation and removal of a photomultiplier tube assembly, the segments being so constructed as to prevent straight-line access of external radiation through the shield into the sample receiving zone. Provisions are made for accurately aligning the photomultiplier tube with respect to one or more sample-transmitting bores extending through the shield to the sample receiving zone. A sample elevator, used in transporting samples into the zone, is designed to provide a maximum gamma-receiving aspect to maximize the gamma detecting efficiency. (auth)

  17. Origami interleaved tube cellular materials

    International Nuclear Information System (INIS)

    A novel origami cellular material based on a deployable cellular origami structure is described. The structure is bi-directionally flat-foldable in two orthogonal (x and y) directions and is relatively stiff in the third orthogonal (z) direction. While such mechanical orthotropicity is well known in cellular materials with extruded two dimensional geometry, the interleaved tube geometry presented here consists of two orthogonal axes of interleaved tubes with high interfacial surface area and relative volume that changes with fold-state. In addition, the foldability still allows for fabrication by a flat lamination process, similar to methods used for conventional expanded two dimensional cellular materials. This article presents the geometric characteristics of the structure together with corresponding kinematic and mechanical modeling, explaining the orthotropic elastic behavior of the structure with classical dimensional scaling analysis. (paper)

  18. Mechanical Instabilities of Biological Tubes

    CERN Document Server

    Hannezo, Edouard; Prost, Jacques; 10.1103/PhysRevLett.109.018101

    2012-01-01

    We study theoretically the shapes of biological tubes affected by various pathologies. When epithelial cells grow at an uncontrolled rate, the negative tension produced by their division provokes a buckling instability. Several shapes are investigated : varicose, enlarged, sinusoidal or sausage-like, all of which are found in pathologies of tracheal, renal tubes or arteries. The final shape depends crucially on the mechanical parameters of the tissues : Young modulus, wall-to-lumen ratio, homeostatic pressure. We argue that since tissues must be in quasistatic mechanical equilibrium, abnormal shapes convey information as to what causes the pathology. We calculate a phase diagram of tubular instabilities which could be a helpful guide for investigating the underlying genetic regulation.

  19. The comparison of corrosion resistance between Baosteel's alloy 690 tube and foreign alloy 690 tube

    International Nuclear Information System (INIS)

    Alloy 690 having excellent corrosion resistance is widely used for SG tubes. The intergranular corrosion and pitting corrosion resistance of Baosteel's alloy 690 tube, Country A alloy 690 tube and Country B alloy 690 tube have been analysed by comparison. It shows that: The intergranular corrosion of Baosteel's alloy 690 tube tested complied with ASTM G28 Standard could satisfy the technical requirement. However.some of Baosteel's alloy 690 tube in intergranular corrosion resistance had less performance than Country A. In addition, pitting corrosion tested with ASTM G48 Standard shown the Baosteel's alloy 690 tube better than Country B. (authors)

  20. Fields in multilayer beam tubes

    International Nuclear Information System (INIS)

    Equations are presented for calculating the fields from a bunched beam that penetrate into the layers of a beam tube of circular cross section. Starting from the radial wave impedance of an outer surface, the wave functions in inner layers are calculated numerically to obtain field strengths or the longitudinal beam impedance. Examples of a vertex-detector region and of an injection kicker are given

  1. Flux tubes at Finite Temperature

    CERN Document Server

    Bicudo, Pedro; Cardoso, Marco

    2016-01-01

    We show the flux tubes produced by static quark-antiquark, quark-quark and quark-gluon charges at finite temperature. The sources are placed in the lattice with fundamental and adjoint Polyakov loops. We compute the square densities of the chromomagnetic and chromoelectric fields above and below the phase transition. Our results are gauge invariant and produced in pure gauge SU(3). The codes are written in CUDA and the computations are performed with GPUs.

  2. Dynamic characteristics of heat exchanger tubes vibrating in a tube support plate inactive mode

    International Nuclear Information System (INIS)

    Tubes in shell-and-tube heat exchangers, including nuclear plant steam generators, derive their support from longitudinally positioned tube support plates (TSPs). Typically there is a clearance between the tube and TSP hole. Depending on design and fabrication tolerances, the tube may or may not contact all of the TSPs. Noncontact results in an inactive TSP which can lead to detrimental flow induced tube vibrations under certain conditions dependent on the resulting tube-TSP interaction dynamics and the fluid excitation forces. The purpose of this study is to investigate the tube-TSP interaction dynamics. Results of an experimental study of damping and natural frequency as functions of tube-TSP diametral clearance and TSP thickness are reported. Calculated values of damping ratio and frequency of a tube vibrating within an inactive TSP are also presented together with a comparison of calculated and experimetnal quantities

  3. Ultrasonic inspection of inpile tubes

    International Nuclear Information System (INIS)

    The in-service inspection (ISI) of inpile tubes can be performed accurately and safely with a semiautomatic ultrasonic inspection system. The ultrasonic technique uses a set of multiple transducers to detect and size cracks, voids, and laminations radially and circumferentially. Welds are also inspected for defects. The system is designed to inspect stainless steel and Inconel tubes ranging from 53.8 mm (2.12 in.) to 101.6 mm (4 in.) inner diameter with wall thickness on the order of 5 mm. The inspection head contains seven transducers mounted in a surface-following device. Six angle-beam transducers generate shear waves in the tubes. Two of the six are oriented to detect circumferential cracks, and two detect axial cracks. Although each of these four transducers is used in the pulse-echo mode, they are oriented in aligned sets so pitch-catch operation is possible if desired. The remaining angle-beam transducers are angulated to detect flaws that are off axial or circumferential orientation. The seventh transducer is used for longitudinal inspection and detects and sizes laminar-type defects

  4. Fuel cladding tubes and manufacture thereof

    International Nuclear Information System (INIS)

    Purpose: To enable smooth contaction between fuel pellets and cladding tubes, as well as prevent chemical reaction for the fission products released from the pellets. Method: The inner surface of a cladding tube is coated with a copper film and further provided thereover with a graphite film. The graphite film is formed through electrophoretic coating as follows: A cladding tube is supported rotatably in an electrophoretic coating tank containing coating solution incorporated with graphite powder and connected to an anode. A cathode is attached to the inside of the cladding tube. Coating current is supplied while rotating the cladding tube and the graphite film is formed through electrophoresis. (Ikeda, J.)

  5. Turbine nozzle stage having thermocouple guide tube

    Science.gov (United States)

    Schotsch, Margaret Jones; Kirkpatrick, Francis Lawrence; Lapine, Eric Michael

    2002-01-01

    A guide tube is fixed adjacent opposite ends in outer and inner covers of a nozzle stage segment. The guide tube is serpentine in shape between the outer and inner covers and extends through a nozzle vane. An insert is disposed in the nozzle vane and has apertures to accommodate serpentine portions of the guide tube. Cooling steam is also supplied through chambers of the insert on opposite sides of a central insert chamber containing the guide tube. The opposite ends of the guide tube are fixed to sleeves, in turn fixed to the outer and inner covers.

  6. Ceramic vacuum tubes for geothermal well logging

    Energy Technology Data Exchange (ETDEWEB)

    Kelly, R.D.

    1977-01-12

    The results of investigations carried out into the availability and suitability of ceramic vacuum tubes for the development of logging tools for geothermal wells are summarized. Design data acquired in the evaluation of ceramic vacuum tubes for the development of a 500/sup 0/C instrumentation amplifier are presented. The general requirements for ceramic vacuum tubes for application to the development of high temperature well logs are discussed. Commercially available tubes are described and future contract activities that specifically relate to ceramic vacuum tubes are detailed. Supplemental data is presented in the appendix. (MHR)

  7. Small size neutron tube UNG-1

    International Nuclear Information System (INIS)

    A tube UNG-1 (universal neutron gas-filled) is designed for the use in the well neutron generators IGN-1 and IGN-1-M (a pulse neutron generator). Their serial production in the USSR has been started in 1963. At the same year, the serial production of the tubes UNG-1 has been started. Thus, this tube is the first serial logging accelerating tube in the USSR. A Penning source, equipped with a hot cathode, was selected as an ion source of the tube

  8. Explosive Ballooning Flux Tubes in Tokamaks

    CERN Document Server

    Ham, C J; Brochard, G; Wilson, H R

    2016-01-01

    Tokamak stability to, potentially explosive, `ballooning' displacements of elliptical magnetic flux tubes is examined in large aspect ratio equilibrium. Above a critical pressure gradient the energy stored in the plasma may be lowered by finite (but not infinitesimal) displacements of such tubes (metastability). Above a higher pressure gradient, the linear stability boundary, such tubes are linearly and nonlinearly unstable. The flux tube displacement can be of the order of the pressure gradient scale length. Plasma transport from displaced flux tubes may result in rapid loss of confinement.

  9. Capillary Hemangioma of the Fallopian Tube.

    Science.gov (United States)

    Katiyar, Richa; Patne, Shashikant C U; Bharti, Shreekant; Jain, Madhu

    2016-04-01

    Neoplastic lesions of the fallopian tube are rarely seen by surgical pathologists. Haemangioma of the fallopian tube is an extremely rare benign neoplasm. A 30-year-old lady with polymenorrhea and dysmenorrhea underwent hysterectomy and bilateral salpingo-oophorectomy. Her left fallopian tube showed a 2mm sized solid nodule in the wall. Histopathological examination revealed a well-defined vascular lesion in the left fallopian tube, consistent with capillary haemangioma. The vascular endothelium was highlighted by CD34 immunostaining. Our literature review has identified 10 cases of cavernous haemangioma of the fallopian tube. To the best of our knowledge, we report the first ever case of capillary haemangioma of the fallopian tube. This is also the smallest detected haemangioma in the fallopian tube. PMID:27190899

  10. Bearing pad to pressure tube contact simulation

    International Nuclear Information System (INIS)

    Thermal creep strain deformation is a very important pressure tube failure mechanism. During a postulated LOCA (loss of coolant accident) with failure of emergency core injection sys- tem (ECIS), the fuel cladding temperature rapidly increases and the pressure tube becomes completely dry in a few seconds after flow stagnation occurs. Subsequently, the pressure tube circumference is heated by thermal radiation except at the spots where the bearing pads are in direct contact with the pressure tube. Therefore, the localized hot spots are developed on the pressure tube's inner surface under the bearing pads. The main objective of this paper is to evaluate the local thermal-mechanical deformation of a pressure tube in a CANDU reactor and to investigate the fuel channel integrity under localized contact between bearing pad and pressure tube. Furthermore, the mechanistic models are validated against the experimental works per- formed at WRL (Whiteshell research laboratory). Calculations are performed using the finite element method in which the heat, thermal mechanical and creep strain equations are solved, simultaneously. According to the experimental set up, the heat conduction from bearing pads to the inner surface of the pressure tube with appropriate convective and radiation boundary conditions has been simulated. Furthermore, the thermal creep strain deformation has been obtained for when the pressure tube is still under operational condition. It is observed that the pressure tube thermal strain will occur if sufficient high temperature is reached however, depending on the severity of flow degradation in the fuel channel, these localized hot spots could represent a potential creep strain failure of the pressure tube. Whether the pressure tube would fail at these hot spots before contacting the calandria tube depends on the localized temperature and experienced pressure transients. Sensitivity analysis is performed in order to evaluate the contact conductance, the

  11. Product Placement: A Smart Marketing Tool Shifting a Company to the Next Competitive Level

    Directory of Open Access Journals (Sweden)

    Kramolis Jan

    2013-12-01

    Full Text Available The primary aim of this paper was to discover connection between company’s competitiveness and product placement as a marketing tool. The secondary aim was searching for the genesis of product placement. The mentioned issues are explained from the perspectives of three groups: TV studios experts, directors and producers, and other experts (media agencies and advertisers. The Czech Republic market where product placement can be registered is very small – only few television companies. The survey was conducted during years 2011 and 2012 in the Czech Republic. There is no directly measurable tool to tell us exact outputs. However, the results reveal: Marketers are sure that product placement is efficient. The product placement belongs to a longterm marketing field where the brand building is also included. On the basis of the ascertainments acquired by the survey, the basic links between product placement, long-term marketing, and competitiveness are explained in this paper.

  12. Heat transfer parameters for glass-peened calandria tube in pressure tube and calandria tube contact conditions

    International Nuclear Information System (INIS)

    During a postulated event of large LOCA in CANDU reactors, the pressure tube may balloon to contact with its surrounding calandria tube to transfer heat to the moderator. To confirm the integrity of the fuel channel after the contact with a given moderator subcooling, many experiments have been performed in the last three decades by applying different pressure tube heatup rates, different pressure tube pressures and different moderator subcoolings for calandria tubes with smooth outer surface and glass-peened surface. A concept of Equivalent Moderator Subcooling (EMS) has been put forward to determine integrity of fuel channel upon pressure tube/calandria tube contact based on the existing experiment results. This concept has been presented in another work. In this work, the contact thermal conductance between pressure tube and calandria tube, critical heat flux, minimum film boiling temperature, empirical methods for nucleate boiling and film boiling heat transfer coefficient on the glass-peened calandria tube surface are discussed and estimated based on some experimental results and the EMS concept. These parameters are confirmed by simulating the existing experiments using a computer code. The estimated results may help detailed analyses on fuel channel integrity upon PT/CT contact if necessary. (author)

  13. Transtibial Tunnel Placement in Posterior Cruciate Ligament Reconstruction

    OpenAIRE

    Tompkins, Marc; Keller, Thomas C.; Milewski, Matthew D.; Gaskin, Cree M.; Brockmeier, Stephen F.; Hart, Joseph M.; Miller, Mark D.

    2014-01-01

    Background: It is common to place the posterior cruciate ligament (PCL) tibial tunnel with a transtibial technique using a guide that attempts to place the center of the tunnel 1 to 1.5 cm distal to the tibiofemoral joint. It is unknown how well this technique will re-create the native tibial footprint of the PCL. Purpose: To evaluate the accuracy of tibial tunnel placement using a transtibial technique. Study Design: Controlled laboratory study. Methods: Ten cadaveric knees from 10 donors un...

  14. AN ALGEBRAIC METHOD FOR POLE PLACEMENT IN MULTIVARIABLE SYSTEMS

    Institute of Scientific and Technical Information of China (English)

    M. de la Sen

    2001-01-01

    This paper considers the pole placement in multivariable systems involving known delays by using dynamic controllers subject to multirate sampling. The controller parametrizations are calculated from algebraic equations which are solved by using the Kronecker product of matrices. It is pointed out that the sampling periods can be selected in a convenient way for the solvability of such equations under rather weak conditions provided that the continuous plant is spectrally controllable. Some overview about the use of nonuniform sampling is also given in order to improve the system's performance.

  15. Optimal placement of active elements in control augmented structural synthesis

    Science.gov (United States)

    Sepulveda, A. E.; Jin, I. M.; Schmit, L. A., Jr.

    1992-01-01

    A methodology for structural/control synthesis is presented in which the optimal location of active members is treated in terms of (0,1) variables. Structural member sizes, control gains and (0,1) placement variables are treated simultaneously as design variables. Optimization is carried out by generating and solving a sequence of explicit approximate problems using a branch and bound strategy. Intermediate design variable and intermediate response quantity concepts are used to enhance the quality of the approximate design problems. Numerical results for example problems are presented to illustrate the efficacy of the design procedure set forth.

  16. GroFi: Large-scale fiber placement research facility

    OpenAIRE

    Krombholz, Christian; Kruse, Felix; Wiedemann, Martin

    2016-01-01

    GroFi is a large research facility operated by the German Aerospace Center’s Center for Lightweight-Production-Technology in Stade. A combination of dierent layup technologies namely (dry) ber placement and tape laying, allows the development and validation of new production technologiesand processes for large-scale composite components. Due to the use of coordinated and simultaneously working layup units a high exibility of the research platform is achieved. This allows the investigation of ...

  17. Correcting comma placement in Slovene language with LanguageTool

    OpenAIRE

    Piškur, Karin

    2015-01-01

    The aim of the thesis is to add the rules for comma usage to the LanguageTool program. Using the Lektor corpus, we examined which rules for comma usage are causing the most issues in written Slovene. In view of these results, we analyzed the rules for comma usage before conjunctions »and«, »or« and »that« in Slovenian ortography 2001. After finishing the analysis, we tried to implement comma placement rules for the open source program LanguageTool, which can be used as a stand-alone desktop a...

  18. Improvement of Fibre Placement Accuracy in Continuous Tow Shearing Process

    OpenAIRE

    Kim, Byung Chul; Zympeloudis, Evangelos D

    2015-01-01

    Automated Fibre Placement (AFP) is the state-of-the-art technology to produce complex composite aircraft parts. However, its main disadvantage is that it generally produces the process-induced defect such as fibre buckling in steering process, which is required to lay up the tow following non-geodesic paths on a complex mould. Continuous Tow Shearing (CTS) was developed to eliminate the fibre buckling by using the in-plane shear deformation of the tow material [1, 2]. The uniquely designed he...

  19. Commercial vs. product placement: A study with young children

    OpenAIRE

    Omar, Ismael Mahomed

    2010-01-01

    A Work Project, presented as part of the requirements for the Award of a Masters Degree in Management from the NOVA – School of Business and Economics The aim of this study is to investigate how young children (5-7 years old) are affected by commercials and product placements regarding the detection of advertising content, brand awareness and brand choice. We also wanted to study the relation of those variables with age (children before and after entering into primary school) and gender. F...

  20. Funding, Product Placement and Drunkenness in Punchdrunk's The Black Diamond

    OpenAIRE

    Alston, A

    2012-01-01

    This article responds to Stella Artois Black’s recent hiring of Punchdrunk members for their ‘immersive’ theatre marketing venture The Black Diamond (Scene 1). What happens to immersive theatre when product placement enters its world? And what happens to the product having entered the world of immersive theatre? These questions are addressed in relation to Arts Council England funding policy and Punchdrunk’s award of a significant rise in ACE funding. Balancing ACE’s framework for ‘sustainabl...

  1. Pole-placement with constant gain output feedback

    Science.gov (United States)

    Sridhar, B.; Lindorff, D. P.

    1973-01-01

    Davison (1970) has demonstrated that it is possible to assign max (m, p) poles of a linear time-invariant controllable and observable multivariable system arbitrarily close to desired locations by using constant gain output feedback. A new proof of Davison's theorem on pole placement is developed, and a system design procedure is described which offers some advantages over Davison's method. It is shown that in some cases more than max (m, p) poles can be assigned arbitrarily, and a least square design procedure is proposed to approximate the desired pole locations when it is not possible to place all the poles.

  2. A New Lower Bound on Guard Placement for Wireless Localization

    CERN Document Server

    Damian, Mirela; O'Rourke, Joseph; Ramaswami, Suneeta

    2007-01-01

    The problem of wireless localization asks to place and orient stations in the plane, each of which broadcasts a unique key within a fixed angular range, so that each point in the plane can determine whether it is inside or outside a given polygonal region. The primary goal is to minimize the number of stations. In this paper we establish a lower bound of 2n/3 - 1 stations for polygons in general position, for the case in which the placement of stations is restricted to polygon vertices, improving upon the existing n/2 lower bound.

  3. Pre-Placement Risk and Longitudinal Cognitive Development for Children Adopted from Foster Care

    OpenAIRE

    Waterman, Jill M; Nadeem, Erum; Paczkowski, Emilie; Foster, Jared Cory; Lavner, Justin A.; Belin, Thomas; Miranda, Jeanne

    2013-01-01

    This study examined the trajectory of cognitive development over the first five years of adoptive placement among children adopted from foster care and how pre-adoption risk factors relate to this development. Overall, children’s cognitive scores increased significantly, with the most rapid improvement occurring in the first year post-placement. By five years post-placement, children’s mean cognitive and achievement scores were in the average range. Adoption is a positive intervention for chi...

  4. Product Placement: A Smart Marketing Tool Shifting a Company to the Next Competitive Level

    OpenAIRE

    Kramolis Jan; Kopeckova Martina

    2013-01-01

    The primary aim of this paper was to discover connection between company’s competitiveness and product placement as a marketing tool. The secondary aim was searching for the genesis of product placement. The mentioned issues are explained from the perspectives of three groups: TV studios experts, directors and producers, and other experts (media agencies and advertisers). The Czech Republic market where product placement can be registered is very small – only few television companies. The sur...

  5. 'Dancing With Handcuffs and Shackles': How Product Placement Is Adopted By the Chinese Film Industry.

    OpenAIRE

    Li, Wei

    2015-01-01

    Abstract This PhD researches the role of product placement in modern Chinese cinema, exploring the shifting discourses and textually-specific practices that are unique to the practice of product placement within the Chinese film industry. Existing studies have focused almost exclusively on the Hollywood film industry, and have analysed product placement in terms of its effectiveness with audiences, and as a potential influence on consumer behaviour, often from a psycho...

  6. Student placement service: An exploratory investigation of employer retention and a “Priority Partner” intervention

    OpenAIRE

    Walsh, Francis D.; Das, A. K.; Vass, K.K.; Byrne, Seán; N. P. Shrivastava; Katiha, P.K.

    2013-01-01

    Purpose – The purpose of this paper is to investigate the factors relating to retention of employers on an undergraduate work placement programme in a third level institution. Design/methodology/approach – An action research methodology involving problem diagnosis, intervention planning, action and evaluation is employed. The diagnosis involved a survey of 130 employers that had taken students on placement during the first two years of the placement programme. The action resear...

  7. USEFULNESS OF PLACEMENT-WEIGHT DATA IN FORECASTING FED CATTLE MARKETINGS AND PRICES

    OpenAIRE

    Norwood, F. Bailey; Schroeder, Ted C.

    2000-01-01

    In 1996, the USDA began reporting cattle-on-feed placements in various weight groups, which should provide information regarding expected slaughter timings and improve fed cattle price forecasts and marketing strategies. Private data were collected to obtain the necessary degrees of freedom to test statistical relationships between placement weight distributions, beef supply, and fed cattle prices. Use of placement weights improved beef supply forecasts only at a one-month horizon; it contrib...

  8. PSYCHIATRIC CLINICAL PLACEMENT UPON NURSING STUDENTS PERCEIVED KNOWLEDGE IN CARING FOR MENTALLY ILL

    OpenAIRE

    Herry Prasetyo

    2012-01-01

    Background: The implementation of a psychiatric clinical placement has been an integral component in Indonesia Nursing Academies. Purpose: The research was to investigate how nursing students’ perceived knowledge in caring for mentally ill patients as a result of their psychiatric clinical placement. Method: A descriptive survey design commonly called non-experimental design was used in this research. Students, who had completed two weeks in a psychiatric clinical placement as a component of ...

  9. A Novel Approach for Optimal Capacitor Placement Model in Power Distribution Systems

    OpenAIRE

    K.S.Ravichandran; Salem Saleh Saeed Alsheyuhi; Venugopal Chitra

    2012-01-01

    This study deals with the design of distributed power systems and optimal capacitor placement based on the ANFIS (Adaptive Network Fuzzy Inference Systems) using Mamdani-type fuzzy inference model. Traditionally, this problem of optimal capacitor placement has been solved through various optimization techniques, but it is less accuracy of finding placement and more time consuming. This can be avoided by defining the system stochastically. In this study, we introduce ANFIS architecture for the...

  10. Moviegoers’ response to product placement: a mise-en-scene analysis

    OpenAIRE

    Nappolini, Marco; Hackley, Chris

    2008-01-01

    Product placement is a form of marketing promotion which is attracting increasing attention from practitioners and academic researchers. To date, most management research in the field has conceptualized product placement in terms of information exposure which accesses semantic memory, ignoring the media context of dramatic entertainment and its potential influence on the meanings of the brand. This paper offers a new conceptualization of product placement as dramatic entertainment. It takes a...

  11. Product placement v hudebních videoklipech v České republice

    OpenAIRE

    Pajerová, Hedvika

    2011-01-01

    In my thesis I mapp the current situation prevailing in the Czech Republic in the area of product placement in music videos. The analysis of situation is based on an analysis of Czech and foreign music videos and interviews with experts. General public's view via product placement affects survey conducted online only. In conclusion of the practical part of my thesis is case study for product placement in music video for independent, underground, Czech band. This academic work should contribut...

  12. Analytical Engines are Unnecessary in Top-down Partitioning-based Placement

    OpenAIRE

    C. J. Alpert; Caldwell, A. E.; Chan, T.F.; D. J.-H. Huang; A. B. Kahng; Markov, I. L.; Moroz, M. S.

    1999-01-01

    The top-down “quadratic placement” methodology is rooted in such works as [36, 9, 32] and is reputedly the basis of commercial and in-house VLSI placement tools. This methodology iterates between two basic steps: solving sparse systems of linear equations to achieve a continuous placement solution, and “legalization” of the placement by transportation or partitioning. Our work, which extends [5], studies implementation choices and underlying motivations for the quadratic placem...

  13. Foster care assessment: A study of the placement decision process in Flanders.

    Science.gov (United States)

    Vanderfaeillie, Johan; Pijnenburg, Huub; Damen, Harm; Van Holen, Frank

    2015-11-01

    Family foster care placement decision-making has a weak scientific underpinning. Mostly a 'variable-oriented approach' is taken, which requires a lot of information that is not always available. The identification of clusters of foster children with similar characteristics may be a more viable decision strategy. In this study we investigated if foster children could indeed be clustered, which problems were identified at the time of placement, and the influence of placement history. It proved possible to group foster children into two clusters: (1) young children with familial problems and few behavioral problems, and (2) older children with prominent child problems and behavioral problems. For foster children with and without placement history, problems associated with placement proved identical. Considering that a foster care placement did not result in fundamental change in the problems present at time of placement, the importance is stressed of approaching foster care assessment as part of a decision making process which looks back as well as forward. Placement decisions should be based on an appraisal of the appropriateness of foster placement as a solution for the child. In conjunction with this appraisal a decision is required on how parents can be supported toward reunification. Or--if this is not an option--whether long term foster care is the best option for the child and if so, what conditions need to be met. PMID:25913381

  14. Minimal guided bone regeneration procedure for immediate implant placement in the esthetic zone

    Directory of Open Access Journals (Sweden)

    Nettemu Sunil Kumar

    2013-01-01

    Full Text Available The anterior maxilla presents a challenging milieu interior for ideal placement of implants because of the compromised bone quality. With the advent of intraoral bone harvesting and augmentation techniques, immediate implant placement into fresh extraction sockets have become more predictable. Immediate implant placement has numerous advantages compared to the delayed procedure including superior esthetic and functional outcomes, maintenance of soft and hard tissue integrity and increased patient compliance. This case report exhibits immediate implant placement in the maxillary esthetic zone by combining a minimal invasive autogenous block bone graft harvest technique for ensuring successful osseointegration of the implant at the extraction site.

  15. Pulse tube cooler having 1/4 wavelength resonator tube instead of reservoir

    Science.gov (United States)

    Gedeon, David R. (Inventor)

    2008-01-01

    An improved pulse tube cooler having a resonator tube connected in place of a compliance volume or reservoir. The resonator tube has a length substantially equal to an integer multiple of 1/4 wavelength of an acoustic wave in the working gas within the resonator tube at its operating frequency, temperature and pressure. Preferably, the resonator tube is formed integrally with the inertance tube as a single, integral tube with a length approximately 1/2 of that wavelength. Also preferably, the integral tube is spaced outwardly from and coiled around the connection of the regenerator to the pulse tube at a cold region of the cooler and the turns of the coil are thermally bonded together to improve heat conduction through the coil.

  16. Effect of U-tube length on space distribution of UTSG reverse flow in tubes

    International Nuclear Information System (INIS)

    For natural circulation, it is shown that parallel flow in the tubes of inverted U-tube steam generators can be non-uniform. And reverse flow occurs in some tubes. Existing studies on the space distribution of reverse flow tubes are dissident. A flow model of one-dimensional steady state is established. Analysis shows that the length will change the relationship of flow characteristics between tubes. And the space distribution of reverse flow tube differs further. When the U-tube length of UTSG is small enough, flow excursion will occur earlier in shorter tube than longer tube, and vise versa. And the analysis is validated by best estimate code RELAP5/MOD3.3. (authors)

  17. Vacuum and the electron tube industry

    Science.gov (United States)

    Redhead, P. A.

    2005-07-01

    The electron tube industry started with the patenting of the thermionic diode by John Ambrose Fleming in 1904. The vacuum technology used by the infant tube industry was copied from the existing incandescent lamp industry. The growing demands for electron tubes for the military in the first world war led to major improvements in pumps and processing methods. By the 1920s, mass production methods were developing to satisfy the demands for receiving tubes by the burgeoning radio industry. Further expansion in the 1930s and 1940s resulted in improvements in automatic equipment for pumping vacuum tubes leading to the massive production rates of electron tubes in the second world war and the following two decades. The demand for radar during the war resulted in the development of techniques for large-scale production of microwave tubes and CRTs, the latter technology being put to good use later in TV picture tube production. The commercial introduction of the transistor ended the massive demand for receiving tubes. This review concentrates on the vacuum technology developed for receiving tube production.

  18. CFD modeling of a boiler's tubes rupture

    International Nuclear Information System (INIS)

    This paper reports the results of a study on the reason for tubes damage in the superheater Platen section of the 320 MW Bisotoun power plant, Iran. The boiler has three types of superheater tubes and the damage occurs in a series of elbows belongs to the long tubes. A three-dimensional modeling was performed using an in-house computational fluid dynamics (CFD) code in order to explore the reason. The code has ability of simultaneous solving of the continuity, the Reynolds-Averaged Navier-Stokes (RANS) equations and employing the turbulence, combustion and radiation models. The whole boiler including; walls, burners, air channels, three types of tubes, etc., was modeled in the real scale. The boiler was meshed into almost 2,000,000 tetrahedral control volumes and the standard k-ε turbulence model and the Rosseland radiation model were used in the model. The theoretical results showed that the inlet 18.9 MPa saturated steam becomes superheated inside the tubes and exit at a pressure of 17.8 MPa. The predicted results showed that the temperature of the steam and tube's wall in the long tubes is higher than the short and medium size tubes. In addition, the predicted steam mass flow rate in the long tube was lower than other ones. Therefore, it was concluded that the main reason for the rupture in the long tubes elbow is changing of the tube's metal microstructure due to working in a temperature higher than the design temperature. In addition, the structural fatigue tension makes the last elbow of the long tube more ready for rupture in comparison with the other places. The concluded result was validated by observations from the photomicrograph of the tube's metal samples taken from the damaged and undamaged sections

  19. Development of INCONEL 600 precision tube (1)

    Energy Technology Data Exchange (ETDEWEB)

    Joo, Yeong Han; Jo, Bong Hyeon; Lee, Dong Hee; Kim, Wan Kyo; Jeong, Pyeong Keun; Yoon, Hwang Lo; Chio, Seok Sik [Sammi Steel Co. Ltd., Changwon (Korea, Republic of)

    1994-07-01

    Steam generator, being connected with nuclear fuel reactor is one of the most important part of nuclear power plant and consists of a large number of INCONEL 600 tubes. Approximately 160 tons of tubes are needed for a single nuclear power plant. All of INCONEL 600 steam generator tubes for domestic nuclear power plants have been imported. The aim of this research is to develop INCONEL 600 precision tubes for steam generator of nuclear power plant. If this research is conducted successfully, we can produce nuclear fuel tubes, Ni-alloy precision tubes and stainless steel precision tubes for many purposes and technology of INCONEL 600 steam generator tubes are similar to those of other tubes above mentioned. In the current study, development of preliminary manufacturing process of INCONEL 600 precision tubes for steam generator and investigation of material`s metallurgical characteristics were conducted. The main scope of this research is as follows. First, the preliminary manufacturing process design was conducted after investigations of foreign manufacturing processes and technical reports. Second, the results of investigations of material`s metallurgical characteristics through the manufacturing process were applied to the production technology of tentative INCONEL 600 precision tubes for sample. Third, preliminary process routes were established and samples of INCONEL 600 precision tube were produced by this process. As the results of this research, 14 pieces of INCONEL 600 precision tubes were produced by preliminary manufacturing process and the material`s metallurgical characteristics were investigated through the processes. But the SCC test could not be conducted due to the absence of equipment. In order to apply the results of SCC test to the manufacturing process, we need a SCC tester which can simulate SCC characteristics under high temperature and high pressurized circulating water. 95 refs., 55 figs., 20 tabs.

  20. Eddy current inspection of tubing

    International Nuclear Information System (INIS)

    The Experimental research work carried out to develop a Eddy current testing equipment is described. Search coils with ferrite or air cores were used and the obtained results are discussed. Valuable information was gained from a improved channel in which a direct measure of the defect and the reference signal phase difference is obtained. Artificial defect used to evaluate resolution and sensitivity were produced by electro-machining and mechanical means. Finned SAP tubing was tested in a routine basis with the described equipment and the results plotted. Basic and theoretical considerations on the Eddy current testing technique are given in the last section of this report. (Author)