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Sample records for temporary self-expanding metallic

  1. Long-term safety and outcome of a temporary self-expanding metallic stent for achalasia: a prospective study with a 13-year single-center experience

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    Zhao, Jun-Gong; Li, Yong-Dong; Li, Ming-Hua; Shang, Ke-Zhong [Shanghai Tong Ji University, Department of Radiology, Tenth Affiliated People' s Hospital, Shanghai (China); Cheng, Ying-Sheng [Shanghai Tong Ji University, Department of Radiology, Tenth Affiliated People' s Hospital, Shanghai (China); Shanghai Jiao Tong University, Department of Radiology, Sixth Affiliated People' s Hospital, Shanghai (China); Chen, Ni-Wei; Chen, Wei-Xiong [Shanghai Jiao Tong University, Department of Gastroenterology, Sixth Affiliated People' s Hospital, Shanghai (China)

    2009-08-15

    To prospectively evaluate the long-term clinical safety and efficacy of a newly designed self-expanding metallic stent (SEMS) in the treatment of patients with achalasia. Seventy-five patients with achalasia were treated with a temporary SEMS with a 30-mm diameter. The SEMSs were placed under fluoroscopic guidance and removed by gastroscopy 4-5 days after stent placement. Follow-up data focused on dysphagia score, technique and clinical success, clinical remissions and failures, and complications and was performed at 6 months, 1 year, and within 3 to 5 years, 5 to 8 years, 8 to 10 years, and >10 years postoperatively. Stent placement was technically successful in all patients. Complications included stent migration (n=4, 5.33%), chest pain (n=28, 38.7%), reflux (n=15, 20%), and bleeding (n=9, 12%). No perforation or 30-day mortality occurred. Clinical success was achieved in all patients 1 month after stent removal. The overall remission rates at 6 months, 1, 1-3, 3-5, 5-8, 8-10, and >10 year follow-up periods were 100%, 96%, 93.9%, 90.9%, 100%, 100%, and 83.3%, respectively. Stent treatment failed in six patients, and the overall remission rate in our series was 92%. The median and mean primary patencies were 2.8 {+-} 0.28 years (95% CI: 2.25-3.35) and 4.28 {+-} 0.40 years (95% CI: 3.51-5.05), respectively. The use of temporary SEMSs with 30-mm diameter proved to be a safe and effective approach for managing achalasia with a long-term satisfactory clinical remission rate. (orig.)

  2. Temporary use of a new fully-covered self-expanding metal stent for the management of post-esophagectomy strictures.

    Science.gov (United States)

    Buscaglia, Jonathan M; Jayaraman, Vijay; Nagula, Satish

    2011-04-01

    Perioperative morbidity rates following esophagectomy for esophageal cancer remain quite high (26-41%) even at high-volume centers. Complications may include stricture at the esophagogastric (EG) anastomosis, as well as tracheo-esophageal or tracheo-gastric fistula formation. Fully-covered self-expanding metal stents (FCSEMS) have only recently been described for use in benign esophageal disease. The use of FCSEMS for the management of postoperative complications following esophagectomy has not been well studied. We report our observations in three consecutive patients that underwent placement and subsequent removal of a new, fully-covered metal stent (Wallflex esophageal stent) for treatment of dysphagia due to a persistent stricture at the EG anastomosis. © 2011 The Authors. Digestive Endoscopy © 2011 Japan Gastroenterological Endoscopy Society.

  3. Esophagojejunal anastomotic leak managed with self expandable metallic stent

    Directory of Open Access Journals (Sweden)

    Arvind Madurandagam Annapillai

    2013-01-01

    Full Text Available Esophagealjejunal anastomotic leak after gastrectomy is a serious surgical emergency with high mortality. This report describes a 57-year-old male with esophagojejunal anastomotic leak following total gastrectomy for gastric cancer and was managed successfully with self-expandable metallic stent. To our knowledge this is the first such report from India. This case report highlights the need of interdisciplinary coordination in managing this difficult clinical situation. Endotherapy with self-expandable metallic stent (SEM provided twin benefits of improving respiratory embarrassment and the joy of eating. Therapy of such difficult cases must be individualized; however, and SEM stent usage is a viable option

  4. Percutaneous transhepatic self-expanding metal stents for palliation ...

    African Journals Online (AJOL)

    Cancers of the pancreas, gallbladder and bile ducts are the commonest causes of malignant biliary obstruction. .... markers on the delivery catheter allow fluoroscopic control of stent release after positioning across the .... percutaneous biliary transhepatic self-expanding metal stent insertion was technically successful in all ...

  5. Randomised trial of self-expanding metal stents versus polyethylene stents for distal malignant biliary obstruction

    NARCIS (Netherlands)

    Davids, P. H.; Groen, A. K.; Rauws, E. A.; Tytgat, G. N.; Huibregtse, K.

    1992-01-01

    Self-expanding metal stents are claimed to prolong biliary-stent patency, although no formal comparative trial between plastic and expandable stents has been done. In a prospective randomised trial, we assigned 105 patients with irresectable distal bile-duct malignancy to receive either a metal

  6. Self-Expanding Metal Stenting for Palliation of Patients with Malignant Colonic Obstruction

    DEFF Research Database (Denmark)

    Meisner, Søren; González-Huix, Ferran; Vandervoort, Jo G

    2012-01-01

    Background. Self-expanding metal stents can alleviate malignant colonic obstruction in incurable patients and avoid palliative stoma surgery. Objective. Evaluate stent effectiveness and safety on palliation of patients with malignant colorectal strictures. Design. Two prospective, one Spanish...... and one global, multicenter studies. Settings. 39 centers (22 academic, 17 community hospitals) from 13 countries. Patients. A total of 257 patients were enrolled, and 255 patients were treated with a WallFlex uncovered enteral colonic stent. Follow-up was up to 12 months or until death or retreatment...... for patients with malignant colonic obstruction should be self-expanding metal stent placement due to high rates of technical success and efficacy in symptom palliation and few complications....

  7. Feasibility of using bulk metallic glass for self-expandable stent applications.

    Science.gov (United States)

    Praveen Kumar, Gideon; Jafary-Zadeh, Mehdi; Tavakoli, Rouhollah; Cui, Fangsen

    2017-10-01

    Self-expandable stents are widely used to restore blood flow in a diseased artery segment by keeping the artery open after angioplasty. Despite the prevalent use of conventional crystalline metallic alloys, for example, nitinol, to construct self-expandable stents, new biomaterials such as bulk metallic glasses (BMGs) are being actively pursued to improve stent performance. Here, we conducted a series of analyses including finite element analysis and molecular dynamics simulations to investigate the feasibility of using a prototypical Zr-based BMG for self-expandable stent applications. We model stent crimping of several designs for different percutaneous applications. Our results indicate that BMG-based stents with diamond-shaped crowns suffer from severe localization of plastic deformation and abrupt failure during crimping. As a possible solution, we further illustrate that such abrupt failure could be avoided in BMG-based stents without diamond shape crowns. This work would open a new horizon for a quest toward exploiting superior mechanical and functional properties of metallic glasses to design future stents. © 2016 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 105B: 1874-1882, 2017. © 2016 Wiley Periodicals, Inc.

  8. Self-expandable metal stents for relieving malignant colorectal obstruction: short-term safety and efficacy within 30 days of stent procedure in 447 patients

    DEFF Research Database (Denmark)

    Meisner, Søren; González-Huix, Ferran; Vandervoort, Jo G

    2011-01-01

    The self-expandable metal stent (SEMS) can alleviate malignant colonic obstruction and avoid emergency decompressive surgery.......The self-expandable metal stent (SEMS) can alleviate malignant colonic obstruction and avoid emergency decompressive surgery....

  9. Hemodialysis shunts-related subclavian vein stenosis : treatment with self-expandable metallic stent

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    Kim, Sang Gyee; Lee, Young Chul; Shin, Sang Soo; Kim, Yun Hyeon; Kim, Jae Kyu; Kang, Heoung Keun; Jeong, Sang Young; Choi, Su Jin Na [Chonnam Univ. College of Medicine, Kwangju (Korea, Republic of)

    1999-04-01

    To evaluate the usefulness of placement of self-expandable stents in hemodialytic shunt-related subclavian vein stenosis. Self-expandable metallic stent was placed in nine patients with hemodialytic shunt-related subclavian vein stenosis. In seven cases, angioplasty was attempted before stent placement; in five, stents were placed immediately after failed angioplasty; and in two, due to restenosis after angioplasty. Procedures involved a 10mm diameter, 7-10cm length Wallstent in eight cases, and a 10mm diameter, 8cm length Hanaro stent in one. In all cases, clinical follow-up, which included physical examination and the measurement of venous resistance pressure during hemodialysis, was performed. The follow-up period was between 5 months and 1 year 7 months. Repeated intervention was performed if restenosis was detected. The stenotic sites were in eight cases the site of a previous subclavian venous line, and in one, the site of anatomic narrowing at the thoracic inlet of the subclavian vein. The technical success rate was 100%;a resulting complication was stent migration into the right atrium in one case in which a Hanaro stent had been used; this was removed by snaring. During follow-up of the eight patients in whon stent placement was successful, restenosis developed in three cases. This occurred during the 7th, 8th, and 15th month, respectively. Two such cases were treated by balloon dilatation. In hemodialytic shunt-related subclavian vein stenosis, treatment involving the use of a self-expandable metallic stent is useful, especially for treating a lesion which has not responded to angioplasty with a high patency rate.

  10. Self-expandable metal stents for achalasia: Thinking out of the box!

    Science.gov (United States)

    Sioulas, Athanasios D; Malli, Chrysoula; Dimitriadis, George D; Triantafyllou, Konstantinos

    2015-01-01

    Achalasia is a primary motor disorder of the esophagus diagnosed manometrically in the clinical setting of dysphagia to both solids and liquids. Currently established treatment options include pneumatic dilation, laparoscopic Heller myotomy, botulinum toxin injection performed endoscopically, oral agents that relax the lower esophageal sphincter and esophagectomy for refractory, end-stage disease. Despite their effectiveness, a significant proportion of patients eventually relapses and needs retreatment. In this setting, several new techniques are under investigation promising future enrichment of our therapeutic armamentarium for achalasic patients. Among them, peroral endoscopic myotomy and self-expandable metal stents placed across the gastro-esophageal junction represent the most encouraging modalities, as initial studies assessing their efficacy and safety indicate. This review highlights the role of self-expandable metal stents in the management of patients with achalasia. Their possible position in the therapeutic algorithm of achalasia along with established and novel techniques is also assessed. Finally, the need for large prospective randomized trials is underlined in order to elucidate the numerous relevant issues. PMID:25610533

  11. Fully covered self-expandable metal stents (SEMS), partially covered SEMS and self-expandable plastic stents for the treatment of benign esophageal ruptures and anastomotic leaks.

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    van Boeckel, Petra G A; Dua, Kulwinder S; Weusten, Bas L A M; Schmits, Ruben J H; Surapaneni, Naveen; Timmer, Robin; Vleggaar, Frank P; Siersema, Peter D

    2012-02-29

    Benign esophageal ruptures and anastomotic leaks are life-threatening conditions that are often treated surgically. Recently, placement of partially and fully covered metal or plastic stents has emerged as a minimally invasive treatment option. We aimed to determine the clinical effectiveness of covered stent placement for the treatment of esophageal ruptures and anastomotic leaks with special emphasis on different stent designs. Consecutive patients who underwent placement of a fully covered self-expandable metal stent (FSEMS), a partially covered SEMS (PSEMS) or a self-expanding plastic stent (SEPS) for a benign esophageal rupture or anastomotic leak after upper gastrointestinal surgery in the period 2007-2010 were included. Data on patient demographics, type of lesion, stent placement and removal, clinical success and complications were collected A total of 52 patients received 83 esophageal stents (61 PSEMS, 15 FSEMS, 7 SEPS) for an anastomotic leak (n=32), iatrogenic rupture (n=13), Boerhaave's syndrome (n=4) or other cause (n=3). Endoscopic stent removal was successful in all but eight patients treated with a PSEMS due to tissue ingrowth. Clinical success was achieved in 34 (76%, intention-to-treat: 65%) patients (PSEMS: 73%, FSEMS: 83%, SEPS: 83%) after a median of 1 (range 1-5) stent and a median stenting time of 39 (range 7-120) days. In total, 33 complications in 24 (46%) patients occurred (tissue in- or overgrowth (n=8), stent migration (n=10), ruptured stent cover (all Ultraflex; n=6), food obstruction (n=3), severe pain (n=2), esophageal rupture (n=2), hemorrhage (n=2)). One (2%) patient died of a stent-related cause. Covered stents placed for a period of 5-6 weeks may well be an alternative to surgery for treating benign esophageal ruptures or anastomotic leaks. As efficacy between PSEMS, FSEMS and SEPS is not different, stent choice should depend on expected risks of stent migration (SEPS and FSEMS) and tissue in- or overgrowth (PSEMS).

  12. Utility of removable esophageal covered self-expanding metal stents for leak and fistula management.

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    Blackmon, Shanda H; Santora, Rachel; Schwarz, Peter; Barroso, Alberto; Dunkin, Brian J

    2010-03-01

    Esophageal or gastric leakage from anastomotic wound dehiscence, perforation, staple line dehiscence, or trauma can be a devastating event. Traditional therapy has often consisted of either surgical repair for rapidly diagnosed leaks or diversion for more complicated cases, commonly associated with a delayed diagnosis. This study summarizes our experience treating leaks or fistulas with novel, covered self-expanding metal stents (cSEMS). The primary objective of this study was to determine the efficacy and safety of covered self-expanding metal stents when used to treat complicated leaks and fistulas. Over 15 months, 25 patients with esophageal or gastric leaks were evaluated for stenting as primary treatment. A prospective database was used to collect data. Stents were placed endoscopically, with contrast evaluation used for leak evaluation. Patients who did not improve clinically after stenting or whose leak could not be sealed underwent operative management. During a mean follow-up of 15 months, 23 of the 25 patients with esophageal or gastric leaks during a 15-month period were managed with endoscopic stenting as primary treatment. Healing occurred in patients who were stented for anastomotic leakage after gastric bypass or sleeve gastrectomy (n = 10). One patient with three esophageal iatrogenic perforations healed with stenting. Eight patients successfully avoided esophageal diversion and healed with stenting and adjunctive therapy. Two of the 4 patients with tracheoesophageal fistulas sealed with the assistance of a new pexy technique to prevent stent migration; 1 additional patient had this same technique used to successfully heal an upper esophageal perforation. Esophageal leaks and fistulas can be effectively managed with cSEMS as a primary modality. The potential benefits of esophageal stenting are healing without diversion or reconstruction and early return to an oral diet. 2010 The Society of Thoracic Surgeons. Published by Elsevier Inc. All rights

  13. A fully covered self-expandable metal stent with antimigration features for benign biliary strictures: a prospective, multicenter cohort study

    NARCIS (Netherlands)

    Walter, D.; Laleman, W.; Jansen, J.M.; Milligen de Wit, A.W. van; Weusten, B.L.; Boeckel, P.G. van; Hirdes, M.M.; Vleggaar, F.P.; Siersema, P.D.

    2015-01-01

    BACKGROUND: Self-expandable metal stents (SEMSs) are increasingly used for the treatment of benign biliary strictures (BBSs). A new fully covered SEMS (FCSEMS) with flared ends and high conformability was designed to prevent migration of the stent. OBJECTIVE: To evaluate the efficacy of a novel

  14. A fully covered self-expandable metal stent with antimigration features for benign biliary strictures : a prospective, multicenter cohort study

    NARCIS (Netherlands)

    Walter, Daisy; Laleman, Wim; Jansen, Jeroen M; van Milligen de Wit, A W M; Weusten, Bas L; van Boeckel, Petra G; Hirdes, Meike M; Vleggaar, FP; Siersema, Peter D

    2015-01-01

    BACKGROUND: Self-expandable metal stents (SEMSs) are increasingly used for the treatment of benign biliary strictures (BBSs). A new fully covered SEMS (FCSEMS) with flared ends and high conformability was designed to prevent migration of the stent. OBJECTIVE: To evaluate the efficacy of a novel

  15. Endoscopic therapy for esophageal perforation or anastomotic leak with a self-expandable metallic stent.

    Science.gov (United States)

    Leers, Jessica M; Vivaldi, Carlo; Schäfer, Hartmut; Bludau, Marc; Brabender, Jan; Lurje, Georg; Herbold, Till; Hölscher, Arnulf H; Metzger, Ralf

    2009-10-01

    Leaks of the esophagus are associated with a high mortality rate and need to be treated as soon as possible. Therapeutic options are surgical repair or resection or conservative management with cessation of oral intake and antibiotic therapy. We evaluated an alternative approach that uses self-expandable metallic stents (SEMS). Between 2002 and 2007, 31 consecutive patients with iatrogenic esophageal perforation (n = 9), intrathoracic anastomotic leak after esophagectomy (n = 16), spontaneous tumor perforation (n = 5), and esophageal ischemia (n = 1) were treated at our institution. All were treated with endoscopic placement of a covered SEMS. Stent removal was performed 4 to 6 weeks after implantation. To exclude continuous esophageal leak after SEMS placement, radiologic examination was performed after stent implantation and removal. SEMS placement was successful in all patients and a postinterventional esophagogram demonstrated full coverage of the leak in 29 patients (92%). In two patients, complete sealing could not be achieved and they were referred to surgical repair. Stent migration was seen in only one patient (3%). After removal, a second stent with larger diameter was placed and no further complication occurred. Two patients died: one due to myocardial infarction and one due to progressive ischemia of the esophagus and small bowl as a consequence of vascular occlusion. Stent removal was performed within 6 weeks, and all patients had radiologic and endoscopic evidence of esophageal healing. Implantation of covered SEMS in patients with esophageal leak or perforation is a safe and feasible alternative to operative treatment and can lower the interventional morbidity rate.

  16. Efficacy of Self-Expandable Metallic Stent Inserted for Refractory Hemorrhage of Duodenal Cancer

    Directory of Open Access Journals (Sweden)

    Takashi Orii

    2016-05-01

    Full Text Available Because of advances in the technology of gastrointestinal endoscopy and improvements in the quality of stents, it has become routine to place a stent as palliative therapy for malignant gastrointestinal obstruction. On the other hand, stent placement for malignant gastrointestinal hemorrhage has scarcely been reported, although it may be performed for hemorrhage of the esophageal varicose vein. We recently experienced a patient with refractory hemorrhage from an unresectable duodenal cancer who underwent placement of a self-expandable metallic stent (SEMS and thereafter had no recurrence of the hemorrhage. A 46-year-old man underwent laparotomy to radically resect a cancer in the third portion of the duodenum, which invaded widely to the superior mesenteric vein and its branches and was considered unresectable. After stomach-partitioning gastrojejunostomy was performed, chemotherapy was initiated according to the regimen of chemotherapy of far advanced gastric cancer. One year and 4 months after induction of chemotherapy, gastrointestinal hemorrhage occurred. Upper gastrointestinal endoscopy revealed the hemorrhage oozing from the duodenal cancer, and endoscopic hemostasis, such as injection of hypertonic saline epinephrine and argon plasma coagulation, was unsuccessful. Twenty days after emergence of the hemorrhage, an endoscopic covered SEMS was placed with confirmation by fluoroscopy. Immediately after placement of the stent, the tarry stool stopped and the anemia ceased to progress. The recurrence of the hemorrhage has not been confirmed without migration of the stent. SEMS is an effective hemostatic procedure for malignant refractory hemorrhage.

  17. Palliation of Malignant Upper Gastrointestinal Obstruction with Self-Expandable Metal Stent

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    Morikawa, Soichiro; Suzuki, Azumi; Nakase, Kojiro; Yasuda, Kenjiro [Kyoto Second Red Cross Hospital, Kyoto (Japan)

    2012-02-15

    To assess the technical success, ability to eat, complications and clinical outcomes of patients with self-expandable metal stent (SEMS) placed for malignant upper gastrointestinal (GI) obstruction. Data was collected retrospectively on patients who underwent SEMS placement for palliation of malignant upper GI obstruction by reviewing hospital charts from June 1998 to May 2011. Main outcome measurements were technical success, gastric outlet obstruction scoring system (GOOSS) score before and after treatment, complications, and survival. A total of 82 patients underwent SEMS placement with malignant upper GI obstruction. The initial SEMS placement was successful in 77 patients (93.9%). The mean GOOSS score was 0.56 before stenting and 1.92 (p < 0.001) after treatment. Complications arose in 12 patients (14.6%): stent migration in 1 patient (1.2%), perforation in 1 (1.2%), and obstruction of stent due to tumor ingrowth in 10 (12.2%). The median survival time after stenting was 52 days (6-445). SEMS placement is an effective and safe treatment for palliation of malignant upper GI obstruction. It provides lasting relief in dysphagia and improves the QOL of patients.

  18. Preoperative biliary decompression preceding pancreaticoduodenectomy with plastic or self-expandable metallic stent.

    Science.gov (United States)

    Haapamäki, C; Seppänen, H; Udd, M; Juuti, A; Halttunen, J; Kiviluoto, T; Sirén, J; Mustonen, H; Kylänpää, L

    2015-06-01

    The rainage (PBD) prior to pancreaticoduodenectomy (PD) is controversial. If PBD is required, large bore self-expandable metallic stents (SEMS) are thought to maintain better drainage and have fewer postoperative complications than plastic stents. The confirming evidence is scarce. The aim of the study was to compare outcomes of surgery in patients who underwent PBD with SEMS or plastic stents deployed at endoscopic retrograde cholangiopancreatography (ERCP). This is a retrospective study of 366 patients having had PD during 2000-2009. Preceding endoscopic PBD was performed in 191 patients and nine had had percutaneous transhepatic drainage (PTD). At the time of operation, 163 patients had a plastic stent and 28 had SEMS. Due to stent exchanges, 176 plastic stents and 29 SEMS were placed in all. The stent failure rate was 7.4% for plastic stents and 3.4% for SEMS (p = 0.697). A bilirubin level under 50 µmol/L was reached by 80% of the patients with plastic stents and by 61% of the patients with SEMS (p = 0.058). A postoperative infection complication and/or a pancreatic fistula was found in 26% while using plastic stents and in 25% using SEMS (p = 1.000). In unstented patients with biliary obstruction, the bile juice was sterile significantly more often than in endoscopically stented patients (100% vs 1%, p Plastic stents did not differ from SEMS regarding the stent failure rate, bilirubin level decrease, amount of bacteria in the bile juice, or postoperative complications when used for PBD. The significantly higher price of SEMS suggests their use in selected cases only. © The Finnish Surgical Society 2014.

  19. Treatment of benign biliary leaks with transhepatic placement of coated self-expanding metallic stents.

    Science.gov (United States)

    Páramo, M; García-Barquín, P; Carrillo, M; Millor Muruzábal, M; Vivas, I; Bilbao, J I

    To analyze the safety and efficacy of percutaneous placement of coated self-expanding metallic stents (SEMS) in patients with biliary leaks. This ethics committee at our center approved this study. We retrospectively reviewed all coated SEMS placed between October 2008 and September 2015. We analyzed patient-related factors such as the primary underlying disease, prior hepatic procedures, and clinical outcome. We evaluated the location, the number and type of leak (anastomotic or non-anastomotic), and the characteristics of the interventional procedure (number of stents deployed, location of the stents, technical success, and primary functionality). We recorded the complications registered. We studied 14 patients (11 men and 3 women). The mean follow-up period was 375.5 days (range 15-1920 days). Leaks were postsurgical in 12 patients. One patient developed an arteriobilioportal fistula. In another, the biliary leak occurred secondary to the rupture of the common bile duct after ERCP. A total of 23 coated SEMS were placed, including 21 Fluency® stents (Bard, Tempe, AZ, USA) and 2 Wallflex® stents (Boston Scientific, Galway, Republic of Ireland). The technical success of the procedure was considered total in 11 (78.6%) patients, partial in 2 (14.3%) patients, and null in 1 (7.2%) patient. The clinical outcome was good in 13 of the 14 patients. The mean period of primary functionality of the coated SEMS was 331 days (range 15-1920 days). No major complications were observed in 11 (78.6%) patients. Percutaneous placement of coated SEMS for the treatment of benign biliary leaks is safe and efficacious, with a high rate of technical and clinical success and a moderate rate of complications. Copyright © 2016 SERAM. Publicado por Elsevier España, S.L.U. All rights reserved.

  20. Role of Fully Covered Self-Expandable Metal Stent for Treatment of Benign Biliary Strictures and Bile Leaks

    Energy Technology Data Exchange (ETDEWEB)

    Pausawasadi, Nonthalee [Department of Medicine, Siriraj Hospital, Mahidol University, Bangkok (Thailand); Soontornmanokul, Tanassanee; Rerknimitr, Rungsun [Department of Medicine, Chulalongkorn University, Bangkok (Thailand)

    2012-02-15

    Endoscopic therapy by balloon dilation and placement of multiple large-bore plastic stents is the treatment of choice for benign biliary stricture. This approach is effective but it typically requires multiple endoscopic sessions given the short duration of stent patency. The endoscopic approach for treatment of bile leak involves the placement of a stent with or without biliary sphincterotomy. The self-expandable metal stent (SEMS) has traditionally been used for palliation of malignant biliary strictures given the long duration of stent patency owing to their larger stent diameter. Recently, SEMS has been used in a variety of benign biliary strictures and leaks, especially with the design of the covered self-expandable metal stent (CSEMS), which permits endoscopic-mediated stent removal. The use of CSEMS in benign biliary stricture could potentially result in a decrease in endoscopic sessions and it is technically easier when compared to placement of multiple plastic stents. However, complications such as cholecystitis due to blockage of cystic duct, stent migration, infection and pancreatitis have been reported. The potential subsegmental occlusion of contralateral intrahepatic ducts also limits the use of CSEMS in hilar stricture. Certain techniques and improvement of stent design may overcome these challenges in the future. Thus, CSEMS may be appropriate in only highly selected conditions, such as refractory benign biliary stricture, despite multiple plastic stent placement or difficult to treat bile duct stricture from chronic pancreatitis, and should not be used routinely. This review focuses on the use of fully covered self-expandable metal stent for benign biliary strictures and bile leaks.

  1. Delayed ischemic cecal perforation despite optimal decompression after placement of a self-expanding metal stent: report of a case

    DEFF Research Database (Denmark)

    Knop, Filip Krag; Pilsgaard, Bo; Meisner, Søren

    2004-01-01

    Endoscopic deployment of self-expanding metal stents offers an alternative to surgical intervention in rectocolonic obstructions. Reported clinical failures in the literature are all related to the site of stent placement. We report a case of serious intra-abdominal disease after technically...... condition. Three days after stent deployment, x-ray examinations revealed a small-bowel obstruction and emergency surgery was performed. Intraoperative findings demonstrated a segment of ileum fixated to the tumor in the small pelvis, resulting in the obstructive condition. Furthermore, a cecal perforation...

  2. Comparison of Efficacy of Self-Expandable Metallic Stent Placement in the Unresectable Esophageal Cancer Patients.

    Science.gov (United States)

    Uesato, Masaya; Akutsu, Yasunori; Murakami, Kentarou; Muto, Yorihiko; Kagaya, Akiko; Nakano, Akira; Aikawa, Mizuho; Tamachi, Tomohide; Arasawa, Takahiro; Amagai, Hiroyuki; Muto, Yasuhide; Matsubara, Hisahiro

    2017-01-01

    This is a retrospective study to evaluate the prevention of complications of metallic stent placement in patients with unresectable advanced esophageal cancer. A total of 87 patients were treated with 4 types of metal stents in the esophagus over a period of 18 years. Stent placement was technically successful. The most common prior treatment was chemoradiotherapy. There were no significant differences in the rate of patients with no complications among the prior treatments. Approximately, 30% of patients had the most common chest pain in complications. Stent placement within one month after the completion of chemoradiotherapy should be avoided for the prevention of the chest pain. There was no significant difference in the rate of patients with no complications by lesion location. The rate of no complications was higher for the Niti-S stent than the Gianturco Z-stent or Ultraflex stent. Of note, no complications were noted for the Niti-S ultrathin stent at all. Among cases of stent-related death, the most common type of complication was respiratory disorder caused by the stent that seems to be thick and hard. Therefore, the stent with thin and flexible characteristics like the Niti-S ultrathin stent will solve the various problems of esophageal stent placement.

  3. Self-Expandable Metal Stents for Persisting Esophageal Variceal Bleeding after Band Ligation or Injection-Therapy: A Retrospective Study.

    Directory of Open Access Journals (Sweden)

    Martin Müller

    Full Text Available Despite a pronounced reduction of lethality rates due to upper gastrointestinal bleeding, esophageal variceal bleeding remains a challenge for the endoscopist and still accounts for a mortality rate of up to 40% within the first 6 weeks. A relevant proportion of patients with esophageal variceal bleeding remains refractory to standard therapy, thus making a call for additional tools to achieve hemostasis. Self-expandable metal stents (SEMS incorporate such a tool.We evaluated a total number of 582 patients admitted to our endoscopy unit with the diagnosis "gastrointestinal bleeding" according to our documentation software between 2011 and 2014. 82 patients suffered from esophageal variceal bleeding, out of which 11 cases were refractory to standard therapy leading to SEMS application. Patients with esophageal malignancy, fistula, or stricture and a non-esophageal variceal bleeding source were excluded from the analysis. A retrospective analysis reporting a series of clinically relevant parameters in combination with bleeding control rates and adverse events was performed.The initial bleeding control rate after SEMS application was 100%. Despite this success, we observed a 27% mortality rate within the first 42 days. All of these patients died due to non-directly hemorrhage-associated reasons. The majority of patients exhibited an extensive demand of medical care with prolonged hospital stay. Common complications were hepatic decompensation, pulmonary infection and decline of renal function. Interestingly, we found in 7 out of 11 patients (63.6% stent dislocation at time of control endoscopy 24 h after hemostasis or at time of stent removal. The presence of hiatal hernia did not affect obviously stent dislocation rates. Refractory patients had significantly longer hospitalization times compared to non-refractory patients.Self-expandable metal stents for esophageal variceal bleeding seem to be safe and efficient after failed standard therapy

  4. Self-expandable covered metal tracheal type stent for sealing cervical anastomotic leak after esophagectomy and gastric pull-up: pitfalls and possibilities.

    Science.gov (United States)

    Lindenmann, Joerg; Matzi, Veronika; Porubsky, Christian; Anegg, Udo; Sankin, Oliver; Gabor, Sabine; Neuboeck, Nicole; Maier, Alfred; Smolle-Juettner, Freyja Maria

    2008-01-01

    From January 2003 to June 2006, 6 patients with leakage of the cervical esophagogastrostomy after esophagectomy and gastric pull-up underwent endoscopic stenting using the self-expandable covered tracheal type device. Anastomotic healing was satisfactory. Stent extraction was performed after an average interval of 91 days. Initial stent migration occurred in 2 patients and post-extraction stenosis developed in 3 patients. Insertion of a self-expandable covered metal tracheal stent represents a safe approach resulting in immediate closure and subsequent healing of cervical anastomotic leakage.

  5. Therapy of anastomotic leaks by means of covered self-expanding metallic stents after esophagogastrectomy.

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    Doniec, J M; Schniewind, B; Kahlke, V; Kremer, B; Grimm, H

    2003-08-01

    The mortality rate for surgical revision of gastroesophageal anastomotic leakage after resection for cancer approximates 60 %. The efficacy of endoscopically placed covered metallic stents for treatment of gastroesophageal leakage was evaluated. Between June 1996 and June 2002 we treated 21 patients with proven gastroesophageal leakage; 18 had anastomotic leakage and three patients had perforation for different reasons. The extent of the leaks ranged from one-quarter of the intestinal circumference to its complete dehiscence. The average time from surgery to detection of leakage was 6.1 days (range 3 - 15 days). Mortality, healing rate, length of hospital stay, and complications were assessed. The insertion of stents was performed endoscopically under radiological guidance without any complication in all patients. In 9.5 % (2/21) of patients complete sealing of the leak was not achieved. The mortality associated with anastomotic leakage was 23.8 % (5/21). In 80.1 % (17/21) patients complete healing of the leakage was achieved. The average hospital stay was 67 days (range 14 - 158 days). Of 23 stents, 13 (56.5 %) were removed, and three patients developed stenosis after removal. The treatment of gastroesophageal leakage with covered stents appears to reduce mortality and the complication rate associated with major leakage. Therefore this technique seems to be a reasonable alternative in the treatment of clinically relevant anastomotic leakage.

  6. Reocclusion after Self-Expandable Metallic Stent Placement for Relieving Malignant Colorectal Obstruction as a Palliative Treatment

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    Toshikatsu Nitta

    2016-12-01

    Full Text Available Self-expandable metallic stent (SEMS placement has been practiced in several hospitals in Japan, including ours, since January 2012. Here, we report the case of an 82-year-old Japanese man who presented to the hospital with a 1-week history of right hypochondrial pain. Computed tomography (CT findings indicated colorectal cancer. The laboratory findings on admission indicated severe anemia (red blood cell count, 426 × 104/μL; hemoglobin, 7.9 g/dL. We performed SEMS placement because the patient refused to undergo surgery. He did not attend any of the scheduled follow-up visits after SEMS placement. However, a year and a half after the SEMS placement, the patient attended the hospital because of difficulty in passing stool. A plain abdominal CT scan showed bowel reobstruction due to the ascending colon cancer after SEMS placement. We performed an emergency operation, ascending colostomy, on the same day. Colorectal stent placement may be a good treatment option for patients who refuse to undergo conventional therapeutic treatments or in those with unresectable colorectal cancer. Patients should be carefully followed up every few months after SEMS placement because of the risk of reocclusion.

  7. Covered self-expandable metallic stent placement for a post-operative malignant anastomotic stricture secondary to recurrent gastric cancer

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    Lee, Woon Ha; Jung, Gyoo Sik; Kim, Kyu Jong; Lee, Sang Ho [Gospel Hospital, College of Medicine, Kosin University, Busan (Korea, Republic of); Ko, Ji Ho [Masan Samsung Medical Center, Sungkyunkwan University School of University, Masan (Korea, Republic of); Jeong, Kyung Soon [University of Ulsan Colleg of Medicine, Asan Medical Center, Seoul (Korea, Republic of)

    2007-09-15

    To evaluate the technical feasibility and clinical effectiveness of stent placement for the treatment of a post-operative malignant anastomotic stricture secondary to recurrent gastric cancer. Under fluoroscopic guidance, one or two covered stents were placed in 20 consecutive patients (age range, 44-75 years) with an anastomotic stricture due to a recurrent gastric malignancy. Before stent placement, all patients had severe nausea and recurrent vomiting after ingestion. Stent placement was technically successful for all patients, and no procedural complications occurred. After stent placement, 18 of 20 (90.0%) patients were able to ingest at least a liquid diet and had a markedly decreased incidence of vomiting. During the follow-up of 2-116 weeks (mean, 25.5 weeks), stent migration occurred in two patients (10.0%) on one day after the procedure. All patients with stent migration were treated successfully by means of placing a second stent. Three patients showed a recurrence of the stricture due to tumor overgrowth; two of the patients were treated with coaxial placement of a second stent. Another patient refused additional management. Covered self-expandable metallic stent placement seems to be technically feasible and effective for palliative treatment of a post-operative malignant anastomotic stricture secondary to recurrent gastric cancer.

  8. [Endoscopic covered self-expandable metal stents implantation in the management of anastomotic leakage after colorectal cancer surgery].

    Science.gov (United States)

    Chi, Pan; Wang, Xiaojie; Lin, Huiming; Lu, Xingrong; Huang, Ying

    2015-07-01

    To evaluate the efficacy and safety of covered self-expanding metallic stents (CSEMS) implantation as a treatment option in patients with anastomotic leakages after colorectal cancer surgery. Short-term outcomes of 12 patients with anastomotic leakage after colorectal cancer surgery undergoing CSEMS implantation between May 2013 and November 2014 were analyzed retrospectively. The mean time to diagnosis of anastomotic leakage was 6.3 days (range 2-13). The median time of CSEMS implantation after anastomotic leakage was 8 days (range 2-55). Clinical success without reoperation was achieved in 10 of 12 cases (83.3%) and there was no mortality. The median time to healing of the anastomotic leakage after CSEMS implantation was 13 days (range 10-33). The complications were stent migration (66.7%, 8/12), anorectal pain (58.3%, 7/12), fecal incontinence (25.0%, 3/12) and enterocolic fistula (8.3%, 1/12). Stent implantation one week after relief of peritonitis of postoperative colorectal anastomotic leakages, combined with other conservative therapy (early indwelling of transanal double catheterization cannula and pelvic double catheterization cannula with persistent bathe and negative pressure aspiration) in the management of patients with early diagnosed anastomotic leakages is safe and effective.

  9. Nitinol versus steel partially covered self-expandable metal stent for malignant distal biliary obstruction: a randomized trial.

    Science.gov (United States)

    Soderlund, Claes; Linder, Stefan; Bergenzaun, Per E; Grape, Tomas; Hakansson, Hans-Olof; Kilander, Anders; Lindell, Gert; Ljungman, Martin; Ohlin, Bo; Nielsen, Jorgen; Rudberg, Claes; Stotzer, Per-Ove; Svartholm, Erik; Toth, Ervin; Frozanpor, Farshad

    2014-11-01

    Covered nitinol alloy self-expandable metal stents (SEMSs) have been developed to overcome the shortcomings of steel SEMS in patients with malignant biliary obstruction. In a randomized, multicenter trial, we compared stent patency, patient survival, and adverse events in patients with partly covered stents made from steel or nitinol. A total of 400 patients with unresectable distal malignant biliary obstruction were randomized at endoscopic retrograde cholangiopancreatography (ERCP) to insertion of a steel or nitinol partially covered SEMS, with 200 patients in each group. The primary outcome was confirmed stent failure during 300 days of follow-up.  At 300 days, the proportion of patients with patent stents was 77 % in the steel group, compared with 89 % in the nitinol group (P = 0.01). Confirmed stent failure occurred more often in the steel SEMS group compared with the nitinol SEMS group, in 30 versus 14 patients (P = 0.02). Stent migration occurred in 13 patients in the steel group and in 3 patients in the nitinol group (P = 0.01). Median patient survival (secondary outcome) was 137 days and 120 days in the steel SEMS and nitinol SEMS groups, respectively (P = 0.59). The nitinol SEMS showed longer patency time, and the nitinol group had fewer patients with stent failure, compared with the steel SEMS group. We could not detect any differences between the two groups regarding survival time, and regarding adverse event rate.Clinical trial registration : NCT 00980889. © Georg Thieme Verlag KG Stuttgart · New York.

  10. Endoscopic Ultrasound-guided Drainage of Walled-off Necrosis in Children With Fully Covered Self-expanding Metal Stents.

    Science.gov (United States)

    Nabi, Zaheer; Lakhtakia, Sundeep; Basha, Jahangeer; Chavan, Radhika; Ramchandani, Mohan; Gupta, Rajesh; Kalapala, Rakesh; Darisetty, Santosh; Talukdar, Rupjyoti; Reddy, Duvuur Nageshwar

    2017-04-01

    Endoscopic ultrasound (EUS)-guided drainage with fully covered self-expanding metallic stents (FCSEMS) has been successfully used in adult patients. The utility of FCSEMS in children with walled-off necrosis (WON) is, however, unknown. The aim of present study was to evaluate the feasibility, safety, and efficacy of EUS drainage of WON using FCSEMS in children. We retrospectively evaluated the data of children (18 years or younger) who underwent EUS drainage of WON using FCSEMS at our institution. All FCSEMS were removed between 1 and 3 months. Feasibility, safety, and efficacy were analysed. Twenty-one children (20 boys, mean age 14.9 ± 2.34 years, range 9-18 years) underwent EUS-guided drainage of WON with FCSEMS. The median size of WON was 88 mm (55-148 mm). The median interval between onset of acute pancreatitis and EUS guided drainage was 58 days (range 30-288 days). The technical and clinical success rates were 100% and 95%, respectively. Nasocystic tube was placed in 3 children for lavage. Endoscopic necrosectomy was not required in any of the children. There were no major complications. Minor complications included bleeding (2), stent migration (1), and difficulty in removal of stent (1). After a median follow-up of 360 days (range: 30-1020 days), there was 1 recurrence of WON. EUS drainage of WON using specially designed FCSEMS is safe and efficacious in children. The utility of FCSEMS in children should be further explored and compared with plastic stents.

  11. Comparison between gastrostomy feeding and self-expandable metal stent insertion for patients with esophageal cancer and dysphagia.

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    Yang Won Min

    Full Text Available Self-expandable metal stent (SEMS insertion and percutaneous gastrostomy (PG feeding are commonly used for patients with esophageal cancer and dysphagia. This study aimed to compare outcomes between SEMS insertion and PG feeding for them.We retrospectively analyzed 308 patients with esophageal cancer who underwent fully covered SEMS insertion (stent group or PG (gastrostomy group for dysphagia due to tumor. Patients with other causes of dysphagia, such as radiation-induced or postoperative stricture, were excluded from the study. Clinical outcomes were compared between the two groups, including overall survival and need for additional intervention and postprocedural nutritional status.At baseline, the stent group (n = 169 had more stage IV patients, less cervical cancers, and received radiotherapy and esophagectomy less often than the gastrostomy group (n = 64. The Kaplan-Meier curves showed higher overall survival in the gastrostomy group than in the stent group. Multivariate analysis revealed that PG was associated with better survival compared with SEMS insertion (hazard ratio 0.541, 95% confidence interval 0.346-0.848, p = 0.007. In addition, the gastrostomy group needed additional intervention less often (3.1% vs. 21.9%, p < 0.001 and experienced less decrease in serum albumin levels (-0.15 ± 0.56 g/dL vs. -0.39 ± 0.58 g/dL, p = 0.011 than the stent group after procedure.Our data suggested that, compared with SEMS insertion, PG is associated with better overall survival in patients with esophageal cancer and dysphagia. Stabilized nutritional status by PG may play a role in improving patient survival.

  12. Endoscopic suture fixation is associated with reduced migration of esophageal fully covered self-expandable metal stents (FCSEMS).

    Science.gov (United States)

    Wright, Andrew; Chang, Andrew; Bedi, Aarti Oza; Wamsteker, Erik-Jan; Elta, Grace; Kwon, Richard S; Carrott, Phillip; Elmunzer, B Joseph; Law, Ryan

    2017-09-01

    Esophageal fully covered self-expandable metal stents (FCSEMS) are indicated for the management of benign and malignant conditions of the esophagus including perforations, leaks, and strictures. FCSEMS are resistant to tissue ingrowth and are removable; however, stent migration occurs in 30-55% of cases. Endoscopic suture fixation of FCSEMS has been utilized to decrease the risk of stent migration though data supporting this practice remain limited. The primary aim of this study was to compare clinical outcomes and migration rate of patients who underwent placement of esophageal FCSEMS with and without endoscopic suture fixation. Our single-center, retrospective, cohort study includes patients who underwent esophageal FCSEMS placement with and without endoscopic suture fixation between January 1, 2012, and November 11, 2015. Baseline patient characteristics, procedural details, and clinical outcomes were abstracted. Logistic regression was performed to identify clinical and technical factors associated with outcomes and stent migration. A total of 51 patients underwent 62 FCSEMS placements, including 21 procedures with endoscopic suture fixation and 41 without. Suture fixation was associated with reduced risk of stent migration (OR 0.13, 95% CI 0.03-0.47). Prior stent migration was associated with significantly higher risk of subsequent migration (OR 6.4, 95% CI 1.6-26.0). Stent migration was associated with lower likelihood of clinical success (OR 0.21, 95% CI 0.06-0.69). There was a trend toward higher clinical success among patients undergoing suture fixation (85.7 vs. 60.9%, p = 0.07). Endoscopic suture fixation of FCSEMS was associated with a reduced stent migration rate. Appropriate patient selection for suture fixation of FCSEMS may lead to reduced migration in high-risk patients.

  13. Stent migration following endoscopic suture fixation of esophageal self-expandable metal stents: a systematic review and meta-analysis.

    Science.gov (United States)

    Law, Ryan; Prabhu, Anoop; Fujii-Lau, Larissa; Shannon, Carol; Singh, Siddharth

    2018-02-01

    Covered self-expandable metal stents (SEMS) are utilized for the management of benign and malignant esophageal conditions; however, covered SEMS are prone to migration. Endoscopic suture fixation may mitigate the migration risk of covered esophageal SEMS. Hence, we conducted a systematic review and meta-analysis to evaluate the effectiveness and safety of endoscopic suture fixation for covered esophageal SEMS. Following PRISMA guidelines, we performed a systematic review from 2011 to 2016 to identify studies (case control/case series) reporting the technical success and migration rate of covered esophageal SEMS following endoscopic suture fixation. We searched multiple electronic databases and conference proceedings. We calculated pooled rates (and 95% confidence intervals [CI]) of technical success and stent migration using a random effects model. We identified 14 studies (212 patients) describing covered esophageal SEMS placement with endoscopic suture fixation. When reported, SEMS indications included leak/fistula (n = 75), stricture (n = 65), perforation (n = 10), and achalasia (n = 4). The pooled technical success rate was 96.7% (95% CI 92.3-98.6), without heterogeneity (I 2  = 0%). We identified 29 SEMS migrations at rate of 15.9% (95% CI 11.4-21.6), without heterogeneity (I 2  = 0%). Publication bias was observed, and using the trim-and-fill method, a more conservative estimate for stent migration was 17.0%. Suture-related adverse events were estimated to occur in 3.7% (95% CI 1.6-8.2) of cases. Endoscopic suture fixation of covered esophageal SEMS appears to reduce stent migration when compared to published rates of non-anchored SEMS. However, SEMS migration still occurs in approximately 1 out of 6 cases despite excellent immediate technical success and low risk of suture-related adverse events.

  14. Impact of nutritional factors on survival in patients with inoperable oesophageal cancer undergoing self-expanding metal stent insertion.

    Science.gov (United States)

    Gray, Ronan T; O'donnell, Mark E; Scott, Ryan D; McGuigan, James A; Mainie, Inder

    2011-06-01

    Undernutrition has been shown to be predictive of 30-day mortality in patients undergoing self-expanding metal stent (SEMS) insertion for inoperable oesophageal cancer. The aim of this study was to assess the relationship between nutritional factors and 30-day mortality in patients undergoing SEMS insertion for palliation of oesophageal cancer. A retrospective cohort study was conducted from April 2007 to June 2009. BMI, swallowing ability, calorific intake and nature of nutritional support were recorded. ICD-10 causes of death were obtained from the Department of Health and Social Services. Fifty-six stents were inserted into 53 patients (mean age 70 years, male n=35). Median (interquartile range) BMI was 21.0 kg/m (18.7-24.0). Median pre-SEMS swallowing grade was 3. Median calorific intake as a percentage of estimated daily requirements was 94.0% (75.6-100.0%). Thirty (56.6%) patients tolerated an oral diet enhanced with supplement drinks whereas 23 (43.4%) patients required more invasive forms of enteral and parenteral support. The 30-day mortality rate was 11.3% (n=6) and cumulative median survival was 84 (interquartile range 38-156) days. BMI, calorific intake and swallowing capacity were not predictors of survival. Although there was a nonsignificant trend for reduced survival in those patients who did (n=23) receive invasive nutritional support compared with those who did not (n=30) (83.9 vs. 151.3 days, P=0.053), invasive nutritional support itself was not predictive of 30-day mortality (P=0.74). The requirement for invasive nutritional support before SEMS insertion is associated with a poor prognosis and possibly represents more aggressive tumour pathology. Further prospective assessment of prognostic factors, including nutritional parameters, to facilitate reliable selection of appropriate palliative modalities in oesophageal cancer is required.

  15. Uncovered Self-Expanding Metal Stent (SEMS) Four Years After Placement for Long-Term Treatment of a Benign Colonic Obstruction.

    Science.gov (United States)

    Monzur, Farah; Lewis, Ayanna; Buscaglia, Jonathan M

    2014-07-01

    Self-expanding metal stents (SEMS) have emerged as an alternative to surgery in the treatment of malignant colorectal obstructions. There is limited data about their use for benign colonic obstructions, especially in regards to safety and long-term patency. We present a case in which long-term SEMS placement proved to be a durable option for over 4 years in a patient with a benign colonic stricture.

  16. Self-Expanding Metal Stenting for Palliation of Patients with Malignant Colonic Obstruction: Effectiveness and Efficacy on 255 Patients with 12-Month's Follow-up

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    Søren Meisner

    2012-01-01

    Full Text Available Background. Self-expanding metal stents can alleviate malignant colonic obstruction in incurable patients and avoid palliative stoma surgery. Objective. Evaluate stent effectiveness and safety on palliation of patients with malignant colorectal strictures. Design. Two prospective, one Spanish and one global, multicenter studies. Settings. 39 centers (22 academic, 17 community hospitals from 13 countries. Patients. A total of 257 patients were enrolled, and 255 patients were treated with a WallFlex uncovered enteral colonic stent. Follow-up was up to 12 months or until death or retreatment. Interventions(s. Self-expanding metal stent placement. Main Outcome Measures. Procedural success, clinical success, and safety. Results. Procedural success was 98.4% (251. Clinical success rates were 87.8% at 30 days, 89.7% at 3 months, 92.8% at 6 months, and 96% at 12 months. Overall perforation rate was 5.1%. Overall migration rate was 5.5%. Overall death rate during follow-up was 48.6% (124, with 67.7% of deaths related to the patient’s colorectal cancer, unrelated in 32.3%. Only 2 deaths were related to the stent or procedure. Limitations. No control group. Conclusions. The primary palliative option for patients with malignant colonic obstruction should be self-expanding metal stent placement due to high rates of technical success and efficacy in symptom palliation and few complications.

  17. Clinical benefits and oncologic equivalence of self-expandable metallic stent insertion for right-sided malignant colonic obstruction.

    Science.gov (United States)

    Ji, Woong Bae; Kwak, Jung Myun; Kang, Dong Woo; Kwak, Han Deok; Um, Jun Won; Lee, Sun-Il; Min, Byung-Wook; Sung, Nak Song; Kim, Jin; Kim, Seon Hahn

    2017-01-01

    The efficacy of stenting for right-sided malignant colonic obstruction is unknown. This study aimed to evaluate the safety, feasibility, and clinical benefits of self-expandable metallic stent insertion for right-sided malignant colonic obstruction. Clinical data from patients who underwent right hemicolectomy for right colon cancer from January 2006 to July 2014 at three Korea University hospitals were retrospectively reviewed. A total of 39 patients who developed malignant obstruction in the right-sided colon were identified, and their data were analyzed. Stent insertion was attempted in 16 patients, and initial technical success was achieved in 14 patients (87.5 %). No stent-related immediate complications were reported. Complete relief from obstruction was achieved in all 14 patients. Twenty-five patients, including two patients who failed stenting, underwent emergency surgery. In the stent group, 93 % (13/14) of patients underwent elective laparoscopic surgery, and only one surgery was converted to an open procedure. All patients in the emergency group underwent emergency surgery within 24 h of admission. In the emergency group, only 12 % (3/25) of patients underwent laparoscopic surgery, with one surgery converted to an open procedure. All patients in both groups underwent either laparoscopy-assisted or open right/extended right hemicolectomy with primary anastomoses as the first operation. The operative times, retrieved lymph nodes, and pathologic stage did not differ between the two groups. Postoperative hospital stay (9.4 ± 3.4 days in the stent group vs. 12.4 ± 5.9 in the emergency group, p = 0.089) and time to resume oral food intake (3.2 ± 2.1 days in the stent group vs. 5.7 ± 3.4 in the emergency group, p = 0.019) were shorter in the stent group. And there were no significant differences in disease-free survival and overall survival between the two groups. Stent insertion appears to be safe and feasible in patients with right

  18. Feasibility and safety of endoscopic transesophageal access and closure using a Maryland dissector and a self-expanding metal stent.

    Science.gov (United States)

    von Renteln, Daniel; Vassiliou, Melina C; Caca, Karel; Schmidt, Arthur; Rothstein, Richard I

    2011-07-01

    Secure access and reliable closure is paramount in the setting of transesophageal mediastinal endoscopic surgery. The purpose of this study was to develop a secure transesophageal access technique and to evaluate the feasibility, safety, and efficacy of a novel covered, self-expanding, retractable stent for closure of 15-mm esophageal defects. Fifteen-millimeter esophagotomies were created in 18 domestic pigs using needle knife puncture and balloon dilatation or a blunt dissection technique. Six animals were randomly assigned to open surgical repair and six animals to endoscopic closure using a self-expanding, covered, nitinol stent (Danis SX-ELLA stent, ELLA-CS) in a nonsurvival setting. Pressurized leak tests were performed on all closures. Six animals underwent transesophageal endoscopic mediastinal interventions and survived for 17 days. Stents were extracted at day 10. Nonsurvival experiments revealed two bleeding complications associated with the needle-knife access technique, while blunt-dissection mediastinal access was not associated with any complications. Leak test results were not different for stent compared to surgical closures. All survival animals were found to have complete closure and adequate healing of the esophagotomies. No leakage or infectious complication occurred. Blunt dissection achieves safe access into the mediastinum. Stent closure achieves similar leak test results compared to surgical closure and results in adequate sealing and wound healing of 15-mm esophageal defects.

  19. Predictors of stent dysfunction after self-expandable metal stent placement for malignant gastric outlet obstruction: tumor ingrowth in uncovered stents and migration of covered stents.

    Science.gov (United States)

    Hori, Yasuki; Naitoh, Itaru; Hayashi, Kazuki; Ban, Tesshin; Natsume, Makoto; Okumura, Fumihiro; Nakazawa, Takahiro; Takada, Hiroki; Hirano, Atsuyuki; Jinno, Naruomi; Togawa, Shozo; Ando, Tomoaki; Kataoka, Hiromi; Joh, Takashi

    2017-10-01

    Endoscopic metallic stenting is widely accepted as a palliation therapy for malignant gastric outlet obstruction (GOO). However, the predictors of stent dysfunction have not been clarified. We aimed to evaluate the predictors, especially tumor ingrowth in uncovered self-expandable metallic stents (U-SEMS) and migration of covered self-expandable metallic stents (C-SEMS), which are the main causes related to the stent characteristics. In this multicenter retrospective study, we compared patients with U-SEMS and C-SEMS in terms of clinical outcomes, and predictors of stent dysfunction. In total, 252 patients (126 with U-SEMS and 126 with C-SEMS) were enrolled. There were no significant differences in technical success, clinical success, GOO score, or time to stent dysfunction. Tumor ingrowth was significantly more frequent in U-SEMS (U-SEMS, 11.90% vs. C-SEMS, 0.79%; p = 0.002), and stent migration was significantly more frequent for C-SEMS (C-SEMS, 8.73% vs. U-SEMS, 0.79%; p = 0.005). Karnofsky performance status (p = 0.04), no presence of ascites (p = 0.02), and insufficient (migration. Both U-SEMS and C-SEMS are effective with comparable patencies. Tumor ingrowth and stent migration are the main causes of stent dysfunction for U-SEMS and C-SEMS, respectively. With regard to stent dysfunction, U-SEMS might be a good option for patients receiving chemotherapy, while C-SEMS with longer stents for patients in good condition. (Clinical trial registration number: UMIN000024059).

  20. Self-expanding metallic stent as a bridge to surgery in the treatment of left colon cancer obstruction: Cost-benefit analysis and oncologic results.

    Science.gov (United States)

    Flor-Lorente, Blas; Báguena, Gloria; Frasson, Matteo; García-Granero, Alvaro; Cervantes, Andrés; Sanchiz, Vicente; Peña, Andres; Espí, Alejandro; Esclapez, Pedro; García-Granero, Eduardo

    2017-03-01

    The use of a self-expanding metallic stent as a bridge to surgery in acute malignant left colonic obstruction has been suggested as an alternative treatment to emergency surgery. The aim of the present study was to compare the morbi-mortality, cost-benefit and long-term oncological outcomes of both therapeutic options. This is a prospective, comparative, controlled, non-randomized study (2005-2010) performed in a specialized unit. The study included 82 patients with left colon cancer obstruction treated by stent as a bridge to surgery (n=27) or emergency surgery (n=55) operated with local curative intention. The main outcome measures (postoperative morbi-mortaliy, cost-benefit, stoma rate and long-term oncological outcomes) were compared based on an "intention-to-treat" analysis. There were no significant statistical differences between the two groups in terms of preoperative data and tumor characteristics. The technically successful stenting rate was 88.9% (11.1% perforation during stent placement) and clinical success was 81.4%. No difference was observed in postoperative morbi-mortality rates. The primary anastomosis rate was higher in the bridge to surgery group compared to the emergency surgery group (77.8% vs. 56.4%; P=.05). The mean costs in the emergency surgery group resulted to be €1,391.9 more expensive per patient than in the bridge to surgery group. There was no significant statistical difference in oncological long-term outcomes. The use of self-expanding metalllic stents as a bridge to surgery is a safe option in the urgent treatment of obstructive left colon cancer, with similar short and long-term results compared to direct surgery, inferior mean costs and a higher rate of primary anastomosis. Copyright © 2017 AEC. Publicado por Elsevier España, S.L.U. All rights reserved.

  1. No Distal Migration in Unfixed Versus Fixed Cell Structure Covered Self-Expanding Metal Stents for Treatment of Benign Biliary Disease.

    Science.gov (United States)

    Walter, Dirk; Sarrazin, Christoph; Trojan, Jörg; Kronenberger, Bernd; Bojunga, Jörg; Zeuzem, Stefan; Friedrich-Rust, Mireen; Albert, Jörg G

    2015-08-01

    Fully covered self-expandable metal stents (FCSEMS) are increasingly used for treatment of benign common bile duct (CBD) stricture or leakage, but dislodgement of FCSEMS is frequent. To compare dislocation rate and clinical outcome of a standard fixed cell structure FCSEMS (S-FCSEMS) to a novel FCSEMS with an unfixed cell structure (N-FCSEMS). We performed a retrospective analysis of all patients with FCSEMS insertion for benign biliary disease at our Hospital from 03/2008 to 03/2014. Both stent types N-FCSEMS and S-FCSEMS were applied as available unrelated to the indication. Twenty-nine patients (S-FCSEMS: 18, N-FCSEMS: 11) were included. Stent placement was technically successful in 28/29 (96.6 %) patients; stent removal was successful in 26/27 (96.2 %). Two patients with N-FCSEMS were excluded due to unsuccessful placement and withdrawal of consent for stent removal, respectively. Stent migration into the duodenum (distal migration) was observed in 9/18 (50 %) in the S-FCSEMS group compared to 0/9 in the N-FCSEMS (p cell structure of FCSEMS seems to prevent distal migration, but proximal migration still occurs and foreshortening of the N-FCSEMS constrains clinical outcome.

  2. The New Nitinol Conformable Self-Expandable Metal Stents for Malignant Colonic Obstruction: A Pilot Experience as Bridge to Surgery Treatment

    Directory of Open Access Journals (Sweden)

    Roberto Di Mitri

    2014-01-01

    Full Text Available Introduction. Self-expandable metal stents (SEMS are a nonsurgical option for treatment of malignant colorectal obstruction also as a bridge to surgery approach. The new nitinol conformable stent has improved clinical outcomes in these kinds of patients. We report a pilot experience with nitinol conformable SEMS placement as bridge to surgery treatment in patients with colorectal obstruction. Materials and Methods. Between April and August 2012, we collected data on colonic nitinol conformable SEMS placement in a cohort of consecutive symptomatic patients, with malignant colorectal obstruction, who were treated as a bridge to surgery. Technical success, clinical success, and adverse events were recorded. Results. Ten patients (7 male (70%, with a mean age of 69.2 ± 10.1, were evaluated. The mean length of the stenosis was 3.6 ± 0.6 cm. Five patients (50% were treated on an emergency basis. The median time from stent placement to surgery was 16 days (interquartile range 7–21. Technical and clinical success was achieved in all patients with a significant early improvement of symptoms. No adverse events due to the SEMS placement were observed. Conclusion. This pilot study confirmed the important role of nitinol conformable SEMS as a bridge to surgery option in the treatment of symptomatic malignant colorectal obstruction.

  3. Endoscopic ultrasound-guided gallbladder drainage for acute cholecystitis: Long-term outcomes after removal of a self-expandable metal stent.

    Science.gov (United States)

    Kamata, Ken; Takenaka, Mamoru; Kitano, Masayuki; Omoto, Shunsuke; Miyata, Takeshi; Minaga, Kosuke; Yamao, Kentaro; Imai, Hajime; Sakurai, Toshiharu; Watanabe, Tomohiro; Nishida, Naoshi; Kudo, Masatoshi

    2017-01-28

    To assess the long-term outcomes of this procedure after removal of self-expandable metal stent (SEMS). The efficacy and safety of endoscopic ultrasound-guided gallbladder drainage (EUS-GBD) with SEMS were also assessed. Between January 2010 and April 2015, 12 patients with acute calculous cholecystitis, who were deemed unsuitable for cholecystectomy, underwent EUS-GBD with a SEMS. EUS-GBD was performed under the guidance of EUS and fluoroscopy, by puncturing the gallbladder with a needle, inserting a guidewire, dilating the puncture hole, and placing a SEMS. The SEMS was removed and/or replaced with a 7-Fr plastic pigtail stent after cholecystitis improved. The technical and clinical success rates, adverse event rate, and recurrence rate were all measured. The rates of technical success, clinical success, and adverse events were 100%, 100%, and 0%, respectively. After cholecystitis improved, the SEMS was removed without replacement in eight patients, whereas it was replaced with a 7-Fr pigtail stent in four patients. Recurrence was seen in one patient (8.3%) who did not receive a replacement pigtail stent. The median follow-up period after EUS-GBD was 304 d (78-1492). EUS-GBD with a SEMS is a possible alternative treatment for acute cholecystitis. Long-term outcomes after removal of the SEMS were excellent. Removal of the SEMS at 4-wk after SEMS placement and improvement of symptoms might avoid migration of the stent and recurrence of cholecystitis due to food impaction.

  4. Histological Changes in the Bile Duct after Long-Term Placement of a Fully Covered Self-Expandable Metal Stent within a Common Bile Duct: A Canine Study

    Science.gov (United States)

    Song, Tae Jun; Joo, Mee; Park, Do Hyun; Seo, Dong Wan; Lee, Sung Koo; Kim, Myung-Hwan

    2014-01-01

    Background/Aims To date, it has been difficult to determine the optimal stenting duration of a fully covered self-expandable metal stent (FCSEMS) in a benign biliary stricture. The purpose of this study was to identify the histopathological changes in a bile duct resulting from long-term placement of a FCSEMS. Methods An FCSEMS was inserted into the common bile duct of 12 canines, and the animals were divided into four groups. Posteuthanasia, necropsy was performed to examine the histopathological changes in the bile ducts after 1, 3, 6, and 9 months. Results The results of necropsy showed that the covered membranes of the FCSEMSs were intact and easily removed from the bile ducts in 11 of the canines. Severe epithelial hyperplasia of the stented bile duct and epithelial ingrowth into the stent occurred in one animal (from the 3-month group). On histopathological examination, mild inflammatory changes were observed in the stented bile ducts, and there was no significant difference between the four groups. Among the 12 animals, five had de novo stricture. Conclusions An FCSEMS can be inserted into the bile duct without severe histopathological changes up until 9 months. However, a de novo stricture and severe epithelial hyperplasia relating to the stent insertion might occur. PMID:24570888

  5. Comparison of Laparoscopic versus Open Surgery after Insertion of Self-Expandable Metallic Stents in Acute Malignant Colorectal Obstruction: A Case-Matched Study

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    Chotirot Angkurawaranon

    2017-03-01

    Full Text Available Background: Self-expanding metallic stents (SEMS have been acknowledged in management of acute colorectal obstruction. The surgical approach after SEMS insertion varies from open approach to laparoscopic-assisted approach. The primary objective of this study was to compare the outcomes of laparoscopic approach and open approach after SEMS insertion. Methods: From January 2007 to December 2010, cross-sectional medical records reviewed a total of 76 patients who underwent colorectal stenting with SEMS. Patients and tumor characteristics, complications, morbidity and mortality were obtained. Results: Forty-three patients underwent SEMS placement as a bridge to surgery. Laparoscopic-assisted surgery (LS was performed in 24 patients (55.8%, and open surgery (OS was performed in 19 patients (44.2%. All clinicopathological parameters were matched. The technical success of SEMS was found in 42 patients (97.7%, and the clinical stent success was 100%. LS had a higher chance of primary anastomosis than OS (p=0.012; Odd ratio 2.717; 95%CI: 1.79-4.012. LS had a lower permanent ostomy rate (p=0.031; Odd ratio 0.385; 95%CI: 0.259-0.572 and lower estimated blood loss (p=0.024; Odd ratio 0.23; 95%CI: 0.006-0.086. The post-operative complications, mortality rate, recurrence rate, disease free status, and overall survival rates between the two groups were non-significant. Conclusion: Colonic stent is an effective treatment of acute malignant colonic obstruction. The authors suggest the advantage of laparoscopic approach resection after colonic stenting results in a higher primary anastomosis rate, and lower blood loss than open surgery.

  6. Risk factors for technical failure of endoscopic double self-expandable metallic stent placement by partial stent-in-stent method.

    Science.gov (United States)

    Kawakubo, Kazumichi; Kawakami, Hiroshi; Toyokawa, Yoshihide; Otani, Koichi; Kuwatani, Masaki; Abe, Yoko; Kawahata, Shuhei; Kubo, Kimitoshi; Kubota, Yoshimasa; Sakamoto, Naoya

    2015-01-01

    Endoscopic double self-expandable metallic stent (SEMS) placement by the partial stent-in-stent (PSIS) method has been reported to be useful for the management of unresectable hilar malignant biliary obstruction. However, it is technically challenging, and the optimal SEMS for the procedure remains unknown. The aim of this study was to identify the risk factors for technical failure of endoscopic double SEMS placement for unresectable malignant hilar biliary obstruction (MHBO). Between December 2009 and May 2013, 50 consecutive patients with MHBO underwent endoscopic double SEMS placement by the PSIS method. We retrospectively evaluated the rate of successful double SEMS placement and identified the risk factors for technical failure. The technical success rate for double SEMS placement was 82.0% (95% confidence interval [CI]: 69.2-90.2). On univariate analysis, the rate of technical failure was high in patients with metastatic disease and unilateral placement. Multivariate analysis revealed that metastatic disease was a significant risk factor for technical failure (odds ratio: 9.63, 95% CI: 1.11-105.5). The subgroup analysis after double guidewire insertion showed that the rate of technical success was higher in the laser-cut type SEMS with a large mesh and thick delivery system than in the braided type SEMS with a small mesh and thick delivery system. Metastatic disease was a significant risk factor for technical failure of double SEMS placement for unresectable MHBO. The laser-cut type SEMS with a large mesh and thin delivery system might be preferable for the PSIS procedure. © 2014 Japanese Society of Hepato-Biliary-Pancreatic Surgery.

  7. Evaluation of the medtronic exponent self-expanding carotid stent system with the medtronic guardwire temporary occlusion and aspiration system in the treatment of carotid stenosis: combined from the MAVErIC (Medtronic AVE Self-expanding CaRotid Stent System with distal protection In the treatment of Carotid stenosis) I and MAVErIC II trials.

    Science.gov (United States)

    Higashida, Randall T; Popma, Jeffrey J; Apruzzese, Patricia; Zimetbaum, Peter

    2010-02-01

    Embolic protection devices and improved stent technology have advanced the endovascular treatment of carotid artery disease. A combined analysis was performed of the MAVErIC (Medtronic AVE Self-expanding CaRotid Stent System with distal protection) I and II trials to evaluate the safety and feasibility of this system among patients at high risk for surgical endarterectomy. Four hundred ninety-eight patients were enrolled in the MAVErIC I (99 patients) and MAVErIC II (399 patients) studies from June 2001 to October 2004. The results were pooled for statistical analysis of a common primary end point, the 365-day rate of major adverse events. Clinical follow-up took place at 30 days, 6 months, and 365 days postprocedure. The 365-day major adverse event rate, defined as death, stroke, or myocardial infarction within 30 days, and death, ipsilateral stroke, or myocardial infarction from days 31 to 365 was 12.5%. The incidence of neurological death through 365 days was 1.1%. The 30-day major adverse event rate was 5.4%. Subgroup analyses showed no notable differences in the 365-day major adverse event rate for symptomatic patients compared with asymptomatic patients. Treatment of carotid artery disease with carotid artery stenting with a self-expanding stent and distal embolic protection results in a low 30-day adverse event rate, including the occurrence of stroke in patients at high risk for carotid endarterectomy.

  8. In vivo evaluation of a biolimus eluting nickel titanium self expanding stent with overlapping balloon expandable drug eluting and bare metal stents in a porcine coronary model.

    Science.gov (United States)

    Cilingiroglu, Mehmet; Elliott, James; Sangi, Pramod; Matthews, Holly; Tio, Fermin; Trauthen, Brett; Elicker, John; Bailey, Steven R

    2009-01-01

    Long lesions and complex vessel anatomy frequently require the use of overlapping stents to treat a lesion. The purpose of this study was to evaluate the long-term effects of overlapping the Axxess Biolimus A9 eluting stent (BES) with two of the most commonly used, commercially available drug eluting stents. These stents were compared to BxVelocity bare metal (BMS) stents in a porcine coronary stent-injury model. Nineteen juvenile farm swine, 25-35 kg in weight, 3-6 months in age were utilised. Each animal received an Axxess stent to their coronary artery as permitted by the individual animal's anatomy. A second stent, either a Cypher, sirolimus eluting stent (SES) or, a Taxus, paclitaxel eluting stent (PES), or a BxVelocity bare metal stent (BMS) were implanted in an overlapped fashion. The animals were then followed for either 28 or 180 days as specified by a randomisation scheme. At the end of each follow-up period, they were euthenised, and the vessels containing the overlapping stents were harvested, processed into histological sections, and analysed. Compared to bare metal stents, overlapped segments using DES exhibited delayed vascular healing compared to both the proximal and distal non-overlap sites at each of the follow-up time point. Overall, in the non-overlap stent segments, SES induced significantly more inflammation and neointimal hyperplasia compared to PES and BMS. In this study of BMS and two different types of DES overlapped with the Axxess Biolimus A9 eluting stent, we found that while there was a delay in the degree of vascular healing with DES compared to BMS, the specific type of DES that was overlapped with BES did not affect the behaviour of the overlap zone in terms of most of the histomorphometric measures at 28 or 180 days. This was true whether the stent was drug eluting or bare metal. More inflammation with delayed healing was seen in the SES compared to PES and BMS.

  9. Comparison of covered and uncovered self-expandable stents in the treatment of malignant biliary obstruction

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    Diana Yamel Flores-Carmona

    Full Text Available Background and objective: Drainage with metallic stents is the treatment of choice in malignant obstructive jaundice. Technical and clinical success with metallic stents is obtained in over 90% and 80% of cases, respectively. There are self-expandable metallic stents designed to increase permeability. The aim of this study was to describe the results obtained with totally covered self-expandable and uncovered self-expandable metallic stents in the palliative treatment of malignant biliary obstruction. Patients and methods: Sixty eight patients with malignant obstructive jaundice secondary to pancreatobiliary or metastatic disease not amenable to surgery were retrospectively included. Two groups were created: group A (covered self-expandable metallic stents (n = 22 and group B (uncovered self-expandable metallic stents (n = 46. Results: Serum total bilirubin, direct bilirubin, alkaline phosphatase and gamma glutamyl transferase levels decreased in both groups and no statistically significant difference was detected (p = 0.800, p = 0.190, p = 0.743, p = 0.521. Migration was greater with covered stents but it was not statistically significant either (p = 0.101. Obstruction was greater in the group with uncovered stents but it was not statistically significant either (p = 0.476. Conclusion: There are no differences when using covered self-expandable stents or uncovered self-expandable stents in terms of technical and clinical success or complications in the palliative treatment of malignant obstructive jaundice.

  10. Indication for ‘Over the Scope’ (OTS)-Clip vs. Covered Self-Expanding Metal Stent (cSEMS) Is Unequal in Upper Gastrointestinal Leakage: Results from a Retrospective Head-to-Head Comparison

    Science.gov (United States)

    Farnik, Harald; Driller, Marlene; Kratt, Thomas; Schmidt, Carsten; Fähndrich, Martin; Filmann, Natalie; Königsrainer, Alfred; Stallmach, Andreas; Heike, Michael; Bechstein, Wolf O.; Zeuzem, Stefan; Albert, Jörg G.

    2015-01-01

    Background Intestinal perforation or leakage increases morbidity and mortality of surgical and endoscopic interventions. We identified criteria for use of full-covered, extractable self-expanding metal stents (cSEMS) vs. ‘Over the scope’-clips (OTSC) for leak closure. Methods Patients who underwent endoscopic treatment for postoperative leakage, endoscopic perforation, or spontaneous rupture of the upper gastrointestinal tract between 2006 and 2013 were identified at four tertiary endoscopic centers. Technical success, outcome (e.g. duration of hospitalization, in-hospital mortality), and complications were assessed and analyzed with respect to etiology, size and location of leakage. Results Of 106 patients (male: 75 (71%), female: 31 (29%); age (mean ± SD): 62.5 ± 1.3 years, 72 (69%) were treated by cSEMS and 34 (31%) by OTSC. For cSEMS vs. OTSC, mean treatment duration was 41.1 vs. 25 days, p<0.001, leakage size 10 (1-50) vs. 5 (1-30) mm (median (range)), and complications were observed in 68% vs. 8.8%, p<0.001, respectively. Clinical success for primary interventional treatment was observed in 29/72 (40%) vs. 24/34 (70%, p = 0.006), and clinical success at the end of follow-up was 46/72 (64%) vs. 29/34 (85%) for patients treated by cSEMS vs. OTSC; p = 0.04. Conclusion OTSC is preferred in small-sized lesions and in perforation caused by endoscopic interventions, cSEMS in patients with concomitant local infection or abscess. cSEMS is associated with a higher frequency of complications. Therefore, OTSC might be preferred if technically feasible. Indication criteria for cSEMS vs. OTSC vary and might impede design of randomized studies. PMID:25629619

  11. Palliative radiotherapy in addition to self-expanding metal stent for improving dysphagia and survival in advanced oesophageal cancer (ROCS: Radiotherapy after Oesophageal Cancer Stenting): study protocol for a randomized controlled trial.

    Science.gov (United States)

    Adamson, Douglas; Blazeby, Jane; Nelson, Annmarie; Hurt, Chris; Nixon, Lisette; Fitzgibbon, Jim; Crosby, Tom; Staffurth, John; Evans, Mim; Kelly, Noreen Hopewell; Cohen, David; Griffiths, Gareth; Byrne, Anthony

    2014-10-22

    The single most distressing symptom for patients with advanced esophageal cancer is dysphagia. Amongst the more effective treatments for relief of dysphagia is insertion of a self-expanding metal stent (SEMS). It is possible that the addition of a palliative dose of external beam radiotherapy may prolong the relief of dysphagia and provide additional survival benefit. The ROCS trial will assess the effect of adding palliative radiotherapy after esophageal stent insertion. The study is a randomized multicenter phase III trial, with an internal pilot phase, comparing stent alone versus stent plus palliative radiotherapy in patients with incurable esophageal cancer. Eligible participants are those with advanced esophageal cancer who are in need of stent insertion for primary management of dysphagia. Radiotherapy will be administered as 20 Gray (Gy) in five fractions over one week or 30 Gy in 10 fractions over two weeks, within four weeks of stent insertion. The internal pilot will assess rates and methods of recruitment; pre-agreed criteria will determine progression to the main trial. In total, 496 patients will be randomized in a 1:1 ratio with follow up until death. The primary outcome is time to progression of patient-reported dysphagia. Secondary outcomes include survival, toxicity, health resource utilization, and quality of life. An embedded qualitative study will explore the feasibility of patient recruitment by examining patients' motivations for involvement and their experiences of consent and recruitment, including reasons for not consenting. It will also explore patients' experiences of each trial arm. The ROCS study will be a challenging trial studying palliation in patients with a poor prognosis. The internal pilot design will optimize methods for recruitment and data collection to ensure that the main trial is completed on time. As a pragmatic trial, study strengths include collection of all follow-up data in the usual place of care, and a focus on

  12. Use of fully covered self-expanding metal stents for the management of benign biliary conditions Utilización de prótesis metálicas autoexpandibles totalmente recubiertas en procesos biliares benignos

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    J. García-Cano

    2010-09-01

    Full Text Available Background and aim: biliary self-expanding metal stents (SEMS have the advantage of being inserted undeployed with very small sizes and provide, when fully opened, large diameters for biliary drainage. However, their use in benign conditions has been very limited, mainly because of difficulty in their extraction. We present our initial experience with a fully covered SEMS (Wallflex for the management of benign problems of the bile duct. Patients and methods: in a prospective study, stents of 8 mm in diameter and 4, 6 or 8 cm long were inserted by means of ERCP. These SEMS were chosen when according to medical judgement it was thought that diameters greater than 10 French (3.3 mm were needed for proper biliary drainage. Stents were extracted also endoscopically, several months later when deemed clinically appropriate. Results: twenty biliary SEMS were inserted. Reasons for insertion were: large intrahepatic biliary fistula after hydatid cyst surgery (1, perforation of the papillary area following endoscopic sphincterotomy (2, coaxial insertion to achieve patency in obstructed uncovered stents inserted in benign conditions (3, benign strictures (7, multiple and large common bile duct stones that could not be extracted because of tapering and stricturing of the distal common bile duct (7. In all cases, successful biliary drainage was achieved and there were no complications from insertion. Stents were easily extracted after a mean time of 132 days (36-270 in place. Complete resolution of biliary problems was obtained in 14 patients (70%. Conclusions: in our initial experience, the fully covered Wallflex biliary stent was removed without any complication after being in place in the common bile duct for a mean time of over four months. Therefore, it could be used in the management of benign biliary conditions.Introducción y objetivo: las prótesis metálicas autoexpandibles biliares (PMAB tienen la ventaja de introducirse plegadas con calibres muy

  13. Self-Expanding, Tough Biodegradable Elastomers for Wound Stasis

    Science.gov (United States)

    2015-08-06

    the civilian setting, with no effective therapies available at point of injury. We previously reported that a self- expanding polyurethane foam...collection of information if it does not display a currently valid OMB control number. PLEASE DO NOT RETURN YOUR FORM TO THE ABOVE ADDRESS. Arsenal...setting, with no effective therapies available at point of injury. We previously reported that a self-expanding polyurethane foam significantly

  14. Optical coherence tomography study of chronic-phase vessel healing after implantation of bare metal and paclitaxel-eluting self-expanding nitinol stents in the superficial femoral artery.

    Science.gov (United States)

    Kozuki, Amane; Shinke, Toshiro; Otake, Hiromasa; Kijima, Yoichi; Masano, Tomoya; Nagoshi, Ryoji; Imamura, Kimitake; Fujiwara, Ryudo; Shibata, Hiroyuki; Takeshige, Ryo; Tsukiyama, Yoshiro; Yanaka, Kenichi; Nakano, Shinsuke; Fukuyama, Yusuke; Kawashima, Seinosuke; Hirata, Ken-ichi; Shite, Junya

    2016-05-01

    This study aimed to assess chronic-phase suppression of neointimal proliferation and arterial healing following paclitaxel-coated (PTX) and bare metal stent (BMS) implantation in the superficial femoral artery using optical coherence tomography (OCT). Twenty-five patients with 68 stents underwent an 8-month OCT follow-up. Besides standard OCT variables, neointimal characterization and frequencies of peri-strut low-intensity area (PLIA), macrophage accumulation, and in-stent thrombi were evaluated. The mean neointimal thickness was significantly less with PTX stents (544.9±202.2 μm vs. 865.0±230.6 μm, phealing was observed compared with BMS. Copyright © 2015 Japanese College of Cardiology. Published by Elsevier Ltd. All rights reserved.

  15. Self-expanding metal stents versus antrectomy for the palliative treatment of obstructive adenocarcinoma of the gastric antrum Prótesis metálicas autoexpandibles versus antrectomía en el tratamiento paliativo del adenocarcinoma obstructivo del antro gástrico

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    Juan Octavio Alonso-Larraga

    2012-04-01

    Full Text Available Background: gastric cancer patients are first diagnosed with an unresectable tumor in up to 40% of cases. Gastric outlet obstruction causes nausea, vomiting, dehydration and malnutrition. The aim of the study was to compare self-expanding metal stents to antrectomy and Roux-en Y gastrojejunostomy for palliation of obstructive adenocarcinoma of the gastric antrum. Methods: retrospective study in patients with obstructing cancer of the gastric antrum. Patients were divided into two groups: group A, underwent endoscopic placement of self-expanding metal stents and group B underwent surgical treatment with antrectomy and Roux-en Y gastrojejunostomy. Collected Data included: age, gender, performance status (Karnofsky's score, body mass index, histopathology, clinical stage (TNM classification, technical and clinical success of the procedure, time to oral intake, in-hospital stay, re-intervention rate, and complications related to the treatment and survival. Results: a total of 39 patients with gastric adenocarcinoma were included, 21 male and 18 female. Nineteen patients were assigned to group A and 20 patients to group B. There were no statistically significant differences between groups in regards to age, body mass index, Karnofsky's score and clinical stage. The technical and clinical success was similar for both groups. There was a statistically significant difference between groups favoring Self-expanding metal stent in time to oral intake (1 ± 0 vs. 4.9 ± 0.6 days, p = 0.0001 and in-hospital stay (0.94 ± 1.18 vs. 7.8 ± 7.7 days, p = 0.0005. We did not find statistically significant differences with regards to long-term survival. Conclusions: in patients with malignant gastric outlet obstruction due to gastric cancer, endoscopic palliation with self-expanding metal stents provide a shorter interval to oral intake, shorter in-hospital stay and lower rate of complications.Introducción: los pacientes con cáncer gástrico tienen un tumor

  16. Utilização de endoprótese metálica no tratamento de estenose brônquica após transplante pulmonar Treatment of bronchial stenosis after lung transplantation using a self-expanding metal endobronchial stent

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    Marcos Naoyuki Samano

    2005-06-01

    Full Text Available As complicações decorrentes da anastomose brônquica nos transplantes pulmonares, embora tenham diminuído ao longo do tempo, ainda figuram como um dos principais fatores de morbi-mortalidade nesses pacientes. As formas de tratamento dessas complicações incluem dilatação por balão, fotocoagulação por laser, endopróteses de silicone e metálicas, e reoperação. Relata-se o caso de um paciente que apresentou estenose brônquica após transplante pulmonar unilateral esquerdo, cujo tratamento foi realizado com endoprótese metálica auto-expansível de nitinol (Ultraflex®. Embora seja um caso pioneiro no Brasil, a boa resposta clínica, concordante com os dados da literatura, sugere que esse tratamento seja uma boa alternativa nesses casos.Although the incidence of bronchial anastomosis as a complication of lung transplantation has decreased in recent years, it remains a significant cause of morbidity and mortality in these patients. Treatment options include balloon dilatation, laser photocoagulation, placement of a stent (silicone or metal, and performing a second operation. We report the case of a patient who presented bronchial stenosis after left lung transplantation and was treated with a self-expanding metal alloy (nitinol stent (Ultraflex®. Despite the fact that this was the first case of stenosis treated in this fashion in Brazil, the positive clinical response, in agreement with results reported in the literature, indicates that this treatment is a viable alternative in such cases.

  17. The effect of eugenol-free temporary cement's remnants on retention of full metal crowns: comparative study.

    Science.gov (United States)

    Sabouhi, Mahmoud; Nosouhian, Saeid; Davoudi, Amin; Nourbakhshian, Farzaneh; Badrian, Hamid; Nabe, Fatemeh Naderi

    2013-05-01

    The aim of this study was to evaluate the effects of eugenol-free temporary cement's remnants on the retentive strength of full metal crowns luted via zinc phosphate and resin cement (Maxcem) to the tooth structure. Forty complete standardized Ni-Cr crowns in four groups were cemented by two types of permanent cements: zinc phosphate cement and resin cement (Maxcem). In the two groups before permanent cementation of crowns, temporary acrylic crowns were cemented by eugenol-free temporary cement. Crowns' retention was evaluated by Universal testing machine. All data were analyzed by means of one-way ANOVA test in SPSS software version 11.5 (α=0.05). There was no significant difference in groups with prior using eugenol-free temporary cement and groups with just using two permanents cement (p-value≥0.05). The application of temporary cement before permanent cementation of full metal crowns does not have any adverse effect on retention of full metal crowns, when temporary cements are removed properly.

  18. Tratamiento paliativo de la obstrucción tumoral del vaciamiento gástrico con prótesis metálicas autoexpandibles insertadas endoscópicamente Palliative management of malignant gastric outlet obstruction with endoscopically inserted self-expanding metal stents

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    J. García-Cano

    2008-06-01

    Full Text Available Antecedentes y objetivo: la inserción de prótesis metálicas autoexpandibles para paliar la obstrucción tumoral del vaciamiento gástrico es un procedimiento mínimamente invasivo, que cada vez se utiliza con más frecuencia. Presentamos la experiencia de esta técnica en un hospital de nivel II del Sistema Nacional de Salud. Pacientes y métodos: estudio retrospectivo de un periodo de cinco años (2003-2007, en los que se trató de resolver la obstrucción tumoral del vaciamiento gástrico en 27 ocasiones a 23 pacientes (media de 0,45 procedimientos por mes, mediante la inserción endoscópica de prótesis no recubiertas (Wallstent® y Wallflex®. Resultados: la inserción fue técnicamente posible en el 100% de los 27 intentos. Se obtuvo un buen resultado clínico en 25 ocasiones (92,5%. Se utilizó sólo endoscopia 10 (37% veces y en las otras 17 (63% también fluoroscopia. Tras la inserción de la prótesis se intervino a un paciente con intención curativa y a otro, en el que la prótesis no funcionó, para realizar una derivación paliativa. Cuatro prótesis se obstruyeron por crecimiento tumoral, recanalizándose mediante la inserción de nuevas prótesis. En tres ocasiones se produjo ictericia obstructiva en prótesis que cubrían la papila de Vater. No hubo otras complicaciones. Tampoco mortalidad derivada del procedimiento. La media de supervivencia fue de 104 días (rango 28-400, DE ± 94. Conclusiones: en nuestra experiencia, la inserción endoscópica de prótesis metálicas autoexpandibles parece un método seguro y eficaz en el tratamiento paliativo de la obstrucción tumoral del vaciamiento gástrico y puede llevarse a cabo con éxito en un centro de nuestras características.Aim and background: the insertion of self-expanding metal stents to palliate malignant gastric outlet obstruction is a minimally invasive procedure that is being increasingly used. We discuss experience with this technique in a level-II hospital in the

  19. Development of Self-Expanding Idealflo (tm) Sandcontrol Technology

    Energy Technology Data Exchange (ETDEWEB)

    Jeff A. Spray

    2007-09-30

    Development of Self-Expanding Idealflo{trademark} Sandscreen Technology was a successfully executed design-by-analysis through field demonstration project. This final report is presented as a two-part progression of concept development and manufacturing activities. The first part, conceptual development activities, discusses novel specifications creation and non-linear analytical design generation. The second part, manufacturing, contains achievement related information for detailed-design, fabrication, mechanical testing, and field demonstration activities.

  20. Monitoring of Lawsone, p-phenylenediamine and heavy metals in commercial temporary black henna tattoos sold in Turkey.

    Science.gov (United States)

    Aktas Sukuroglu, Ayca; Battal, Dilek; Burgaz, Sema

    2017-02-01

    Henna has a very low allergic potential, and severe allergenic contact dermatitis is mainly caused by p-phenylenediamine (PPD), which is added to temporary black 'henna tattoos', and potentially also by some heavy metals. To determine the presence of, and quantify, Lawsone, PPD and heavy metal contaminants (cobalt, nickel, lead, and chromium) in commercial temporary black henna tattoo mixtures (n = 25) sold in Turkey. Lawsone and PPD concentrations were analysed with high-performance liquid chromatography, and heavy metal quantification was performed with inductively coupled plasma mass spectrometry. PPD was found in all 25 black henna tattoo samples purchased from tattoo shops; levels varied between 3.37% and 51.6%. Lawsone was detected (0.002-88.2%) in 21 of the 25 temporary black henna tattoo samples analysed. Heavy metal contaminant levels were 0.44-3.11 ppm for Co, 1.13-2.20 ppm for Ni, 1.59-17.7 ppm for Pb, and 35.0-76.9 ppm for Cr. Our results suggest that commercial temporary black henna mixtures containing PPD levels up to 51.6% pose a risk of contact sensitization and severe allergic contact dermatitis among users. It is important to identify both the additives and metallic contaminants of black henna tattoo products; the significance of metal contaminants has still to be assessed. © 2016 John Wiley & Sons A/S. Published by John Wiley & Sons Ltd.

  1. Polyurethane-coated, self-expandable biliary stent: an experimental study.

    Science.gov (United States)

    Severini, A; Mantero, S; Tanzi, M C; Cigada, A; Salvetti, M; Cozzi, G; Motta, A

    1995-12-01

    We describe a self-expanding metallic biliary Gianturco-Rösch stent coated with polymeric material. The coating was designed to prevent the growth of neoplastic and reactive tissue within the biliary ducts. The stents were coated with a solvent-casting technique, which consists of dissolving polyurethane (polyether urethane or polycarbonate urethane) pellets in a solvent (dimethylacetamide), dipping the stent in the solution, and completely evaporating the solvent. In vitro mechanical characterization of the stent was performed to determine the adhesion of the coating to the metallic cage, the best introducer caliber for implantation of the device, and the relationship between the stent's diameter and radial stress. Reports in the literature on the biostability of polycarbonate urethane compared with polyether urethane prompted us to use the former material to coat the stents. The solvent technique gives a smooth internal surface of the stent wall, leaving in relief the coated structure of the stent on the external surface. The functional tests demonstrated that the coating did not compromise the original characteristics of the stent in terms of self-expandability, axial flexibility, and increased radial rigidity of the device. Functional tests verified coating stability and device handling, which are the first steps toward in vivo experimentation.

  2. Removal of retrievable self-expandable urethral stents: experience in 58 stents

    Energy Technology Data Exchange (ETDEWEB)

    Shin, Ji Hoon; Song, Ho-Young; Kim, Jin Hyoung; Ko, Heung-Kyu; Kim, Yong Jae; Woo, Chul-Woong; Kim, Tae-Hyung; Ko, Gi-Young; Yoon, Hyun-Ki; Sung, Kyu-Bo [Asan Medical Center, Department of Radiology and Research Institute of Radiology, University of Ulsan College of Medicine, Seoul (Korea); Park, Hyungkeun [Asan Medical Center, Department of Urology, University of Ulsan College of Medicine, Seoul (Korea)

    2006-09-15

    The purpose of this study was to retrospectively evaluate the safety and efficacy of removing retrievable self-expandable urethral stents using a retrieval hook wire. Under fluoroscopic guidance, the removal of 58 polyurethane or PTFE (polytetrafluoroethylene)-covered stents was attempted in 33 patients using a retrieval hook wire. Indications for removal were elective removal (n=21), stent migration (n=19), formation of tissue hyperplasia around or inside of the stent (n=14), stent deformity (n=3), and severe pain (n=1). The mean time the stents remained in place was 64.8{+-}42.9 days (range, 1-177 days). Fifty-six (97%) of the 58 stents were successfully removed using the retrieval hook wire despite the following difficulties; hook wire disconnection (n=2), untied drawstrings (n=3), and polyurethane membrane disruption/separation (n=4). The removal procedure using a retrieval hook wire failed in two stents (3%) which had migrated into the urinary bladder. One of the two stents with migration into the urinary bladder was removed using a snare through the cystostomy route. The overall complication rate was 14% (seven hematuria cases and one urethral tear case), and all were minor and spontaneously resolved without further treatment. In conclusion, removal of retrievable urethral stents using a retrieval hook wire was safe and effective despite some technical difficulties. It is a useful method for allowing temporary stent placement and solving various complications of stent use. (orig.)

  3. Evaluation of temporary seasonal variation of heavy metals and their potential ecological risk in Nzhelele River, South Africa

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    Edokpayi Joshua N.

    2017-12-01

    Full Text Available Surface water is often used as alternative source of drinking water in many regions of the world where the potable water supply is erratic or not present. The concentration of heavy metals was assessed using an Inductively Coupled Plasma Optical Emission Spectrometer (ICP-OES. The impact of temporary seasonal variation on the contamination level was also assessed. Contamination factor (CF and Hakanson’s potential ecological risk (Er and RI indices were used to evaluate the toxicity levels of the metals in the sediments of the river. Higher concentrations of Fe, Mn, Pb, Cu and Zn were determined in the dry season in the river water whereas in the sediments higher levels were recorded for Al, Fe, Cd, Cr, Cu and Zn in the wet season. The average CF values for all the metals showed a low contamination level in the sediment, except for Cu and Cd which had moderate and considerable contamination levels, respectively. Similarly, Cu showed a moderate ecological risk level (Er = 62.90 only in March 2014, for other months Cu and the other metals investigated had Er values Fe>Mn>u>Zn>Cr>Pb>Cd.

  4. Determining temporary overvoltage levels for application of metal oxide surge arresters on multigrounded distribution systems

    Energy Technology Data Exchange (ETDEWEB)

    Lat, M.V. (Ontario Hydro Research Div., Toronto, ON (Canada))

    1990-04-01

    This paper provides an evaluation of different analytical methods that may be used to calculate values of temporary overvoltage on multigrounded distribution systems as a result of single line-to-ground faults. The methods are evaluated in terms of their general accuracy, their ability to account for changes of earth resistivity, ground electrode resistances and grounding frequency, and also in terms of the overall impact of such changes on the calculated overvoltage level. Recommendations are provided for the use of these methods under different sets of system conditions.

  5. Biocompatibility of rapidly solidified magnesium alloy RS66 as a temporary biodegradable metal.

    Science.gov (United States)

    Willbold, Elmar; Kalla, Katharina; Bartsch, Ivonne; Bobe, Katharina; Brauneis, Maria; Remennik, Sergei; Shechtman, Dan; Nellesen, Jens; Tillmann, Wolfgang; Vogt, Carla; Witte, Frank

    2013-11-01

    Biodegradable magnesium-based alloys are very promising materials for temporary implants. However, the clinical use of magnesium-based alloys is often limited by rapid corrosion and by insufficient mechanical stability. Here we investigated RS66, a magnesium-based alloy with extraordinary physicochemical properties of high tensile strength combined with a high ductility and a homogeneous grain size of ~1 μm which was obtained by rapid solidification processing and reciprocal extrusion. Using a series of in vitro and in vivo experiments, we analyzed the biodegradation behavior and the biocompatibility of this alloy. In vitro, RS66 had no cytotoxic effects in physiological concentrations on the viability and the proliferation of primary human osteoblasts. In vivo, RS66 cylinders were implanted into femur condyles, under the skin and in the muscle of adult rabbits and were monitored for 1, 2, 3, 4 and 8 weeks. After explantation, the RS66 cylinders were first analyzed by microtomography to determine the remaining RS66 alloy and calculate the corrosion rates. Then, the implantation sites were examined histologically for healing processes and foreign body reactions. We found that RS66 was corroded fastest subcutaneously followed by intramuscular and bony implantation of the samples. No clinical harm with transient gas cavities during the first 6 weeks in subcutaneous and intramuscular implantation sites was observed. No gas cavities were formed around the implantation site in bone. The corrosion rates in the different anatomical locations correlated well with the local blood flow prior to implantation. A normal foreign body reaction occurred in all tissues. Interestingly, no enhanced bone formation could be observed around the corroding samples in the condyles. These data show that RS66 is biocompatible, and due to its interesting physicochemical properties, this magnesium alloy is a promising material for biodegradable implants. Copyright © 2013 Acta Materialia Inc

  6. Temporary metallic stent placement in the treatment of refractory benign esophageal strictures: results and factors associated with outcome in 55 patients

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Jin Hyoung; Kim, Kyung Rae; Shin, Ji Hoon; Lim, Jin-Oh [University of Ulsan College of Medicine, Asan Medical Center, Department of Radiology and Research Institute of Radiology, Seoul (Korea); Song, Ho-Young [University of Ulsan College of Medicine, Asan Medical Center, Department of Radiology and Research Institute of Radiology, Seoul (Korea)]|[University of Ulsan College of Medicine, Asan Medical Center, Department of Radiology, Seoul (Korea); Choi, Eugene K. [Weill Medical College of Cornell University, New York, NY (United States)

    2009-02-15

    The purpose of this study was to evaluate the effectiveness of temporary metallic stenting in 55 patients with treatment-resistant benign esophageal strictures and to identify factors associated with clinical outcomes. Under fluoroscopic guidance, covered retrievable stents were placed in 55 patients with benign esophageal strictures and were removed with retrieval hook 1 week to 6 months after placement. Stent placement was successful in all patients, and the mean dysphagia score was reduced from 2.8 to 1.3 (p<0.001). The most common complications were tissue hyperproliferation (31%), severe pain (24%), and stent migration (25%). During follow-up (mean: 38 months), recurrence of the stricture necessitating balloon dilation was seen in 38 (69%) of 55 patients. Maintained patency rates after temporary stenting at 1, 3, and 6 months and 1, 2, and 4 years were 58%, 43%, 38%, 33%, 26%, and 21%, respectively. In multivariate analysis, length (p=0.003) of the stricture was the only significant factor associated with maintained patency after temporary stenting. In conclusion, temporary metallic stenting for refractory benign esophageal strictures may be effective during the period of stent placement, but is disadvantaged by the high recurrence rates after stent removal, particularly in patients with a long length of stricture (>7cm). (orig.)

  7. Innovative use of self-expanded polytetrafluoroethylene endoprosthesis for percutaneous endovascular interventions.

    Science.gov (United States)

    Maluenda, Gabriel; Waksman, Ron; Bernardo, Nelson L

    2013-03-01

    VIABAHN® endoprosthesis (Gore & Associates, Flagstaff, AZ), a nitinol self-expanding polytetrafluoroethylene (PTFE) lined stent, has demonstrated utility for percutaneous treatment of chronic occlusive disease involving the superficial femoral artery. In a case series communication we aimed to describe the feasibility of a PTFE-lined stent for percutaneous treatment of conditions other than chronic occlusive disease. We report the successful use of PTFE-endoprosthesis to percutaneously treat several vascular conditions, including arterio-venous fistula closure, reconstruction of a distal limb of an aorto-femoral endoprosthesis aneurysm, femoral artery perforation repair, and an exclusion of large saphenous vein graft aorto-coronary bypass aneurysm. This case series illustrates the feasibility of the "off-label" use of self-expanded PTFE endoprosthesis to percutaneously treat several conditions, which would otherwise require "open" surgical reconstructions. Copyright © 2011 Wiley Periodicals, Inc.

  8. Subclinical leaflet thickening and stent frame geometry in self-expanding transcatheter heart valves

    DEFF Research Database (Denmark)

    Fuchs, Andreas; De Backer, Ole; Brooks, Matthew

    2017-01-01

    AIMS: This study aimed to assess the potential relationship between subclinical leaflet thickening and stent frame geometry in patients who underwent aortic valve replacement with a self-expanding transcatheter heart valve (THV). METHODS AND RESULTS: Seventy-five patients with a self-expanding THV...... were studied with 4D-computed tomography and analysed for leaflet thickening. There was no difference in THV size, overall THV expansion, eccentricity or implantation depth between patients with and those without leaflet thickening. Moderate-to-severe regional THV underexpansion (≤90°) more frequently...... occurred at the non-coronary and right coronary cusps with a significantly higher incidence of leaflet thickening than in cases of full regional THV expansion (24% vs. 3%, p

  9. Transapical implantation of a novel self-expanding sutureless aortic valve prosthesis.

    Science.gov (United States)

    Stalder, Mario; Suri, Rakesh M; Kraehenbuehl, Eva S; Hellige, Gerrit; Wenaweser, Peter; Zobrist, Claudia; Schaff, Harzell V; Carrel, Thierry P

    2010-03-01

    To date, transapical aortic valve implantation has required a balloon-expandable stented valve prosthesis. More recently, a novel self-expanding sutureless stented bovine pericardial prosthesis has been developed which allows rapid aortic valve replacement via an open transaortic approach in humans. The aim of this animal study was to develop a reliable protocol to facilitate the transapical implantation of this self-expanding valve in a porcine model. Off-pump transapical aortic valve implantation was performed through a left mini-thoracotomy using a bovine pericardial valve mounted on a self-expandable nitinol stent of size 21 mm and 23 mm in 11 pigs (average weight 60 kg). The crimped valve was introduced through the left ventricular apex using a flexible and steerable delivery sheath, using a three-step technique. Biplane fluoroscopy and transesophageal echocardiography were simultaneously used for guidance. Successful adjustment of alignment along three axes prior to deployment of the valve was accomplished in each animal. Deployments were performed during a period of rapid pacing. All valves were successfully deployed and functioned normally following transapical removal of the delivery system. Paravalvular leak was documented in one case (9.1%) due to prosthetic misalignment. There was no evidence of valve migration. Correct anatomic seating was confirmed during post-procedure necropsy. Successful transapical implantation of a novel self-expandable bovine pericardial valve was accomplished in 11 animals, without cardiopulmonary bypass. A flexible, steerable delivery system with a three-step release mechanism allowed precise positioning of the valve with a low rate of paravalvular leakage, and excellent device stability.

  10. Serial intravascular ultrasound analysis of bifurcation lesions treated using the novel self-expanding sideguard side branch stent.

    Science.gov (United States)

    Doi, Hiroshi; Maehara, Akiko; Mintz, Gary S; Dani, Lokesh; Leon, Martin B; Grube, Eberhard

    2009-11-01

    We used intravascular ultrasound (IVUS) to assess the efficacy of the Cappella Sideguard stent system for treating coronary bifurcation lesions. Treatment of bifurcation lesions is associated with restenosis at the side branch (SB) ostium, presumably due to inadequate coverage or stent-vessel wall malapposition. To address these limitations, the Sideguard stent was developed. It includes a balloon-deployed, self-expanding, thin-strut, low-stress, nitinol bare metal stent with anatomic funnel-shaped flaring at the SB ostium. Of 25 patients enrolled in the Sideguard I First-In-Man study, complete serial (after intervention and 6-month follow-up) IVUS images were available in 11 patients. All patients were treated with (1) predilation of the SB, (2) Sideguard stenting in the SB, (3) Cypher stenting in the main vessel, and (4) kissing balloon inflations. The Sideguard stent area at the SB carina increased from 3.9 +/- 1.2 to 4.6 +/- 1.1 mm(2) (p = 0.04), resulting in no change in lumen area (3.9 +/- 1.3 vs 4.0 +/- 1.3 mm(2), p = 0.77) despite an intimal hyperplasia (IH) area of 0.6 +/- 0.7 mm(2). Six patients had minimal IH; the increase in stent area translated into an increase in lumen area of 0.4 +/- 0.6 mm(2); 5 patients had relatively more IH (1.3 +/- 0.4 mm(2)), but the increase in stent area of 1.3 +/- 0.3 mm(2) compensated for the IH, resulting in no lumen decrease. In contrast, the main vessel stent area at the carina did not change (5.9 +/- 1.1 vs 6.0 +/- 1.2 mm(2), p = 0.35). In conclusion, serial IVUS analyses of the self-expanding bare metal Sideguard stent indicate preserved SB ostial lumen dimensions at follow-up due to additional increases in stent area that more than compensated for IH.

  11. Post-biliary sphincterotomy bleeding despite covered metallic stent deployment

    Directory of Open Access Journals (Sweden)

    Gianfranco Donatelli

    2016-05-01

    Full Text Available Objectives: Several endoscopic techniques have been proposed for the management of post-sphincterotomy bleeding. Lately, self-expandable metal stents deployment has gained popularity especially as a rescue therapy when other endoscopic techniques fail. Methods-results: We report the case report of a massive post-sphincterotomy bleeding in a patient with a self-expandable metal stent in the biliary tree. Despite the presence of a correctly positioned self-expandable metal stent, a new endoscopic session was required to control the bleeding. Conclusions: Self-expandable metal stent may be useful to manage post-endoscopic sphincterotomy bleeding. However, up to now there is no specifically designed self-expandable metal stent for such complication. Large new designed self-expandable metal stent may be a useful tool for biliary endoscopist.

  12. Trial of self-expandable metallic stents in the palliation of tracheo ...

    African Journals Online (AJOL)

    A contrast study was done on day 1 to assess stent expansion and sealing of the TOF. Data were analysed using Stata ... Median survival was 91 days (range 0 - 273 days) for the stricture group and 62 days (range 3 - 413 days) for the TOF group, but these differences were not significant (p = 0.945). Conclusion. Covered ...

  13. Self-expandable metal stents for obstructing colonic and extracolonic cancer

    DEFF Research Database (Denmark)

    van Hooft, Jeanin E; van Halsema, Emo E; Vanbiervliet, Geoffroy

    2014-01-01

    This Guideline is an official statement of the European Society of Gastrointestinal Endoscopy (ESGE). This Guideline was also reviewed and endorsed by the Governing Board of the American Society for Gastrointestinal Endoscopy (ASGE). The Grading of Recommendations Assessment, Development, and Eva......This Guideline is an official statement of the European Society of Gastrointestinal Endoscopy (ESGE). This Guideline was also reviewed and endorsed by the Governing Board of the American Society for Gastrointestinal Endoscopy (ASGE). The Grading of Recommendations Assessment, Development...

  14. Self-expanding metal stents for colonic obstruction: experiences from 104 procedures in a single center

    DEFF Research Database (Denmark)

    Meisner, Søren; Hensler, Margaret; Knop, Filip Krag

    2004-01-01

    In the past, colonic obstruction caused by malignancy most often resulted in high-risk operations, usually involving two-step procedures or leaving the patient with a stoma in case of disseminated disease.......In the past, colonic obstruction caused by malignancy most often resulted in high-risk operations, usually involving two-step procedures or leaving the patient with a stoma in case of disseminated disease....

  15. Self-Expandable Metal Stents for Colorectal Cancer: From Guidelines to Clinical Practice

    Directory of Open Access Journals (Sweden)

    Maria Pia Costa Santos

    2016-11-01

    Conclusions: In this study, stent placement was an effective procedure in obstructive colorectal cancer. It was mainly used as a bridge to elective surgery. However, a significant rate of silent perforation was observed, which may compromise the oncological outcome of these potentially curable patients. Prospective real life studies are warranted for a better definition of actual recommendations.

  16. Transcatheter implantation of a new prototype of self-expanding aortic valve prosthesis: first experience

    Directory of Open Access Journals (Sweden)

    Е. И. Кретов

    2016-12-01

    Full Text Available Calcific aortic stenosis is an aortic valve disease of atherosclerotic origin occurring in 2-4 % of persons older than 65 years, for whom open surgery is contraindicated. Models of self-expanding aortic valves available today have a number of significant drawbacks. The authors have developed a prototype of a new aortic valve and present its first successful implantation in the experiment.Received 17 October 2016. Accepted 22 November 2016.Funding: The study had no sponsorship.Conflict of interest: The authors declare no conflict of interest.

  17. Self-expanding stent-assisted middle cerebral artery recanalization: technical note

    Energy Technology Data Exchange (ETDEWEB)

    Sauvageau, Eric [State University of New York, Department of Neurosurgery, School of Medicine and Biomedical Sciences, Buffalo, NY (United States); State University of New York, Toshiba Stroke Research Center, School of Medicine and Biomedical Sciences, Buffalo, NY (United States); Levy, Elad I. [State University of New York, Department of Neurosurgery, School of Medicine and Biomedical Sciences, Buffalo, NY (United States); State University of New York, Department of Radiology, School of Medicine and Biomedical Sciences, Buffalo, NY (United States); State University of New York, Toshiba Stroke Research Center, School of Medicine and Biomedical Sciences, Buffalo, NY (United States)

    2006-06-15

    Investigation into pharmacological and mechanical means of improving recanalization rates by intraarterial therapy has led to technological development. Angiographic recanalization has been associated with improvement in clinical outcome. A clot retriever has recently joined an imperfect armamentarium for intraarterial stroke therapy. In this report, we describe successful recanalization of an acute thrombotic occlusion of the inferior division of the middle cerebral artery (MCA) achieved with a self-expanding stent. An 82-year-old woman with a history of coronary atherosclerosis and previous cerebellar hemorrhage presented with a National Institutes of Health Stroke Scale (NIHSS) score of 11. Perfusion computed tomography imaging showed a left MCA territory deficit. Diffusion-weighted magnetic resonance (MR) imaging revealed a small punctiform insular hyperintensity. Angiography documented occlusion of the inferior division of the left MCA (Thrombolysis in Myocardial Infarction or Thrombolysis in Cerebral Infarction, TIMI/TICI, grade 0). Intraarterial delivery of eptifibatide to the occlusion site failed to recanalize the vessel. Deployment of a self-expanding stent in the occluded segment resulted in complete revascularization of the distal vascular bed. Angiography performed on the next day confirmed patency of the stented vessel segment (TIMI/TICI 3). The patient was discharged 3 days after the procedure (NIHSS 3). MR angiography obtained 3 months after the procedure documented left MCA patency. This technique may have a role worthy of further investigation in acute stroke therapy. (orig.)

  18. Advanced Monobore Concept, Development of CFEX Self-Expanding Tubular Technology

    Energy Technology Data Exchange (ETDEWEB)

    Jeff Spray

    2007-09-30

    The Advanced Monobore Concept--CFEX{copyright} Self-Expanding Tubular Technology Development was a successfully executed fundamental research through field demonstration project. This final report is presented as a progression, according to basic technology development steps. For this project, the research and development steps used were: concept development, engineering analysis, manufacturing, testing, demonstration, and technology transfer. The CFEX{copyright} Technology Development--Advanced Monobore Concept Project successfully completed all of the steps for technology development, covering fundamental research, conceptual development, engineering design, advanced-level prototype construction, mechanical testing, and downhole demonstration. Within an approximately two year period, a partially defined, broad concept was evolved into a substantial new technological area for drilling and production engineering applicable a variety of extractive industries--which was also successfully demonstrated in a test well. The demonstration achievement included an actual mono-diameter placement of two self-expanding tubulars. The fundamental result is that an economical and technically proficient means of casing any size of drilling or production well or borehole is indicated as feasible based on the results of the project. Highlighted major accomplishments during the project's Concept, Engineering, Manufacturing, Demonstration, and Technology Transfer phases, are given.

  19. Y-configured metallic stent combined with 125 I seed strands cavity brachytherapy for a patient with type IV Klatskin tumor

    Directory of Open Access Journals (Sweden)

    Jiao Dechao

    2016-08-01

    Full Text Available We report a case in an inoperable patient with type IV Klatskin tumor treated by the use of a novel, two piece, Y-configured self-expandable metallic stent (SEMS combined with two 125 I seed strands via bilateral approach. The placement of the Y-shaped SEMS was successful and resulted in adequate biliary drainage. After 2 months of intraluminal brachytherapy (ILBT, both 125 I seed strands and temporary drainage catheter were removed after patency of the expanded stents was confirmed by the cholangiogram. This technique was feasible and could be considered for the treatment of patients with Bismuth type IV Klatskin tumors.

  20. Mechanical Recanalization of Cerebral Artery Embolic Occlusion Using a Self-Expanding Stent: Experimental Analysis in Canine Model

    Energy Technology Data Exchange (ETDEWEB)

    Choi, Jin Woo; Kim, Snag Joon; Lee, Deok Hee; Suh, Dae Chul [Dept. of Radiology and Research Institute of Radiology, Asan Medical Center, Ulsan University College of Medicine, Seoul (Korea, Republic of)

    2011-07-15

    To evaluate the feasibility of a self-expanding stent for acute embolic occlusion, and recanalization mechanism by histologic examination. Five mongrel dogs were used as study subjects. Each vertebral artery was occluded, and a self-expanding stent was used for recanalization. We evaluated the technical success rate for the placement of the stent to the targeted vessel, the recanalization rate, and residual stenosis. We obtained two specimens of the stented vertebral arteries for histologic evaluation. One dog died of an unknown cause during the induction of anesthesia. In two dogs, only one side of the vertebral artery was used, whereas both vertebral arteries were used in the remaining dogs. A total of six vertebral arteries were successfully occluded. The technical success rate for stenting without complication was 66.7%. The immediate recanalization rate after stenting was 100%. The residual stenosis was 35.6 {+-} 18.6%. On microscopic examination, the stent concentrically displaced the clot and the clot was captured between the stent mesh and arterial wall. Self-expanding stents were effective in revascularizing the cerebrovascular embolic occlusion. The self-expanding stent seemed to achieve recanalization by pushing the clot to the arterial wall and capturing the clot between the stent mesh and arterial wall.

  1. Transapical implantation of a self-expandable aortic valve prosthesis utilizing a novel designed positioning element.

    Science.gov (United States)

    Liu, Xiaopeng; Tang, Yue; Luo, Fuliang; Tian, Yi; Li, Kai; Sun, Jiakang; Jia, Liujun; Wang, Wei

    2017-01-01

    To evaluate a new transapical system which utilizes a novel designed positioning element and a two-step positioning mechanism for easy and accurate implantation of transcatheter valves. Transcatheter aortic valve implantation is an important treatment option for non-surgical patients with severe aortic stenosis. However, accurate placement of the transcatheter valve remains challenging. Self-expandable aortic valve prosthesis with a flexibly connected, annulus-like positioning element was implanted through a transapical approach in 12 pigs. The positioning element was separated and can be released independent of the valve prosthesis. During valve implantation, firstly, the positioning element was unsheathed and fixed into the aortic sinus. Then, the prosthetic valve was guided to an anatomically oriented position and deployed. Six animals were followed up to 180 days. With the help of the positioning element, all 12 valves were successfully deployed at the anticipated site. The valve release procedure took an average of 7.3 ± 2.5 min. The mean transvalvular pressure gradient was 2.8 ± 1.1 mm Hg at valve deployment. Of the six chronic animals, the mean transvalvular pressure gradient was 3.0 ± 1.0 mm Hg on day 7, and 2.9 ± 1.6 mm Hg on day 180 (P = 0.91). No migration, embolization, or coronary obstruction was observed during surgery and at necropsy. Pathological examination showed anatomically correct positioning of the prosthetic valve without signs of thrombosis or calcification. In this study, we confirmed the feasibility of the J-Valve transapical system for transapical implantation through a two-step process. Satisfactory hemodynamic and pathological performance during a follow-up of 180 days was demonstrated. © 2016 Wiley Periodicals, Inc. © 2016 Wiley Periodicals, Inc.

  2. Vascular Biocompatibility of a Triple Layered Self Expanding Stent-Graft in a Dog Mode

    Energy Technology Data Exchange (ETDEWEB)

    Bae, Jae Ik; Won, Je Hwan; Jang, Eun Ho; Lee, Sung Yeong; Ko, Kwang Tae [Dept. of Radiology, Ajou University School of Medicine, Suwon (Korea, Republic of); Jin, Bo Hwan [Medical Science Research Center, Ajou University School of Medicine, Suwon (Korea, Republic of); Lee, June Woo [Dept. of Radiology, Busan National University College of Medicine, Busan (Korea, Republic of)

    2012-02-15

    To evaluate performance and biocompatibility of a newly designed self-expanding stent graft, which consisted of two nitinol stents and an intervening expanded polytetrafluoroethylene membrane in a dog artery model. Twelve stent grafts were placed in the aorta of 6 dogs (beagle, mean body weight 11 kg) for 4 weeks (n = 4) and 12 weeks (n = 8). Luminal diameters were measured for each segment (the proximal bare, the middle graft, the distal bare) by angiographies after implantation and follow up periods. Percent luminal stenosis based on angiographies, histomorphometric, histologic, and scanning electron microscopic analyses of each segments were performed. Blood flow through the stent grafts was good after implantation and during the follow up period, without thrombotic occlusion or stent graft migration. The mean percent luminal stenosis of the proximal bare, the middle grafted and the distal bare segments after 12 weeks were 13.5%, 3.9%, 9.6% retrospectively. The mean neointimal areas of the middle grafted segment were 4.39 mm{sup 2} (4 week) and 4.92 mm{sup 2} (12 week). Mature endothelialization was evident in over 70% of the area of the stented artery after 4 weeks and in over 90% after 12 weeks. The stent graft was well placed in the attempted area without migration. During the 12-week-follow up period, it showed a good patency without thrombotic occlusion or significant in-stent luminal stenosis. Endothelialization was rapid and nearly complete. Neointima was thin and smooth on the middle graft segment and thicker and irregular on the bare segments.

  3. Direct transcatheter aortic valve implantation with self-expandable bioprosthesis: Feasibility and safety

    Energy Technology Data Exchange (ETDEWEB)

    Fiorina, Claudia, E-mail: clafiorina@yahoo.it [Cardiac Catheterization Laboratory, Cardiothoracic Department, Spedali Civili, Brescia (Italy); Maffeo, Diego; Curello, Salvatore [Cardiac Catheterization Laboratory, Cardiothoracic Department, Spedali Civili, Brescia (Italy); Lipartiti, Felicia [Division of Cardiology, Cardiothoracic Department, Spedali Civili, Brescia (Italy); Chizzola, Giuliano [Cardiac Catheterization Laboratory, Cardiothoracic Department, Spedali Civili, Brescia (Italy); D' Aloia, Antonio [Division of Cardiology, Cardiothoracic Department, Spedali Civili, Brescia (Italy); Adamo, Marianna [Cardiac Catheterization Laboratory, Cardiothoracic Department, Spedali Civili, Brescia (Italy); Mastropierro, Rosy [Division of Cardiothoracic Anestesiology, Cardiothoracic Department, Spedali Civili, Brescia (Italy); Gavazzi, Emanuele [Department of Radiology, University of Brescia, Spedali Civili, Brescia (Italy); Ciccarese, Camilla; Chiari, Ermanna [Division of Cardiology, Cardiothoracic Department, Spedali Civili, Brescia (Italy); Ettori, Federica [Cardiac Catheterization Laboratory, Cardiothoracic Department, Spedali Civili, Brescia (Italy)

    2014-06-15

    Background: Balloon valvuloplasty has been considered a mandatory step of the transcatheter aortic valve implantation (TAVI), although it is not without risk. The aim of this work was to evaluate the feasibility and safety of TAVI performed without pre-dilation (direct TAVI) of the stenosed aortic valve. Material and Methods: Between June 2012 and June 2013, 55 consecutive TAVI performed without pre-dilation at our institution using the self-expandable CoreValve prosthesis (Medtronic, Minneapolis, MN) were analyzed and compared with 45 pre-dilated TAVI performed the previous year. Inclusion criteria were a symptomatic and severe aortic stenosis. Exclusion criteria were defined as presence of pure aortic regurgitation, degenerated surgical bioprosthesis or bicuspid aortic valve and prior procedure of balloon aortic valvuloplasty performed as a bridge to TAVI. Results: High-burden calcification in the device landing zone, assessed by CT scan, was found in most of the patients. The valve size implanted was similar in both groups. Device success was higher in direct TAVI (85% vs. 64%, p = 0.014), mostly driven by a significant lower incidence of paravalvular leak (PVL ≥2; 9% vs. 33%, p = 0.02). Safety combined end point at 30 days was similar in both groups. Conclusion: Compared to TAVI with pre-dilation, direct TAVI is feasible regardless of the presence of bulky calcified aortic valve and the valve size implanted. Device success was higher in direct TAVI, mostly driven by a lower incidence of paravalvular leak. Safety at 30 days was similar in two groups.

  4. Superior venous drainage in the "LifeBox": a portable extracorporeal oxygenator with a self-expanding venous cannula.

    Science.gov (United States)

    Berdajs, Denis; Born, Frank; Crosset, Monique; Horisberger, Judith; Künzli, Andreas; Ferrari, Enrico; Tozzi, Piergiorgo; von Segesser, Ludwig K

    2010-07-01

    In an experimental setting, the performance of the LifeBox, a new portable extracorporeal membrane oxygenator (ECMO) system suitable for patient transport, is presented. Standard rectilinear percutaneous cannulae are normally employed for this purpose, but have limited flow and pressure delivery due to their rigid structure. Therefore, we aimed to determine the potential for flow increase by using self-expanding venous cannulae. Veno-arterial bypass was established in three pigs (40.6+/-5.1 kg). The venous line of the cardiopulmonary bypass was established by cannulation of the external jugular vein. The arterial side of the circulation was secured by cannulation of the common carotid artery. Two different venous cannulae (SmartCanula 18/36F 430mm and Biomedicus 19F) were examined for their functional integrity when used in conjunction with the centrifugal pump (500-3000 RPM) of the LifeBox system. At 1500, 2000, 2500, and 3000 RPM, the blood flow increased steadily for each cannula, but remained higher in the self-expanding cannula. That is, the 19F rectilinear cannula achieved a blood flow of 0.93+/-0.14, 1.47+/-0.37, 1.9+/-0.68, and 1.5+/-0.9 l/min, respectively, and the 18/36F self-expanding cannula achieved 1.1+/-0.1, 1.9+/-0.33, 2.8+/-0.39 and 3.66+/-0.52 l/min. However, when tested for venous line pressure, the standard venous cannula achieved -29+/-10.7mmHg while the self-expanding cannula achieved -13.6 +/-4.3mmHg at 1500 RMP. As the RPM increased from 2500 to 3000, the venous line pressure accounted for -141.9+/-20 and -98+/-7.3mmHg for the 19F rectilinear cannula and -30.6+/-6.4 and -45+/-11.6mmHg for the self-expanding cannula. The self-expanding cannula exhibited superior venous drainage ability when compared to the performance of the standard rectilinear cannula with the use of the LifeBox. The flow rate achieved was approximately 40% greater than the standard drainage device, with a maximal pump flow recorded at 4.3l/min.

  5. USE OF COVERED SELF-EXPANDABLE NITINOL STENT FOR ANASTOMOTIC BILIARY STRUCTURE MANAGEMENT AFTER LIVER TRANSPLANTATION: THE FIRST EXPERIENCE

    Directory of Open Access Journals (Sweden)

    M. N. Kornilov

    2013-01-01

    Full Text Available Aim. The aim of this study focuses on the first experience with self-expandable stents, analysis of its efficacy and safety in the treatment of anastomotic strictures after liver transplantation. Materials and methods. There’re 136 liver transplantations performed from 2004 till 2012. To correct anastomotic strictures we’ve used only the self-expandable coated nitinol stent. We performed stenting in 7 recipient. Result. In 131 liver transplant recipients incidence of biliary strictures has been 5.3%. All of 5 patients have been managed by retrograde or antegrade way. Conclusion. Our first experience demonstrate efficacy and safety of the used tecniques up to 24 months. The analysis of more long-term results is required. 

  6. [Numerical modeling of shape memory alloy vascular stent's self-expandable progress and "optimized grid" of stent].

    Science.gov (United States)

    Xu, Qiang; Liu, Yulan; Wang, Biao; He, Jin

    2008-10-01

    Vascular stent is an important medical appliance for angiocardiopathy. Its key deformation process is the expandable progress of stent in the vessel. The important deformation behaviour corresponds to two mechanics targets: deformation and stress. This paper is devoted to the research and development of vascular stent with proprietary intellectual property rights. The design of NiTinol self-expandable stent is optimized by means of finite element software. ANSYS is used to build the finite element simulation model of vascular stent; the molding material is NiTinol shape memory alloy. To cope with the factors that affect the structure of stent, the shape of grid and so on, the self-expanding process of Nitinol stent is simulated through computer. By making a comparison between two kinds of stents with similar grid structure, we present a new concept of "Optimized Grid" of stent.

  7. Self-expandable polytetrafluoroethylene (PTFE)-covered nitinol stent for the palliative treatment of malignant biliary obstruction

    Energy Technology Data Exchange (ETDEWEB)

    Yoo, Oong; Jung, Gyoo Sik; Han, Byung Hoon; Shin, Dong Hoon [Gospel Hospital, College of Medicine, Kosin University, Busan (Korea, Republic of); Ko, Ji Ho [Masan Samsung Medical Center, Sungkyunkwan University School of Medicine, Masan (Korea, Republic of)

    2008-06-15

    We wanted to determine the technical and clinical efficacy of placing a self-expandable PTFE-covered nitinol stent for the management of inoperable malignant biliary obstruction. Thirty six patients with inoperable malignant biliary obstructions were treated by placement of self-expandable PTFE-covered nitinol stents (S and G Biotech Corporation, Seongnam, Korea). Clinical evaluation was done with assessment of the serum bilirubin and alkaline phosphatase levels, which were measured before and after stent placement within 1 week, at 1 month and at 3 months. The patient survival rate and stent patency rate were calculated with performing Kaplan-Meier survival analysis. Successful stent placement was achieved in all the patients without procedure-related complication. Pancreatitis as an early complication occurred in two cases. The serum bilirubin and alkaline phosphatase levels were significantly decreased after the procedure. During the follow-up, recurrent obstructive jaundice occurred in six cases; stent migration occurred in four cases and tumor overgrowth occurred in two cases. The survival rates were 97%, 80%, 67% and 59% at 1, 3, 6 and 9 months, respectively. The stent patency rates were 96%, 92%, 86% and 86% at 1, 3, 6 and 9 months, respectively. Self-expandable PTFE-covered nitinol stent placement seems to be technically feasible and effective for the palliative treatment of malignant biliary obstruction.

  8. First-in-man experience of self-expanding nitinol stents combined with drug-coated balloon in the treatment of femoropopliteal occlusive disease.

    Science.gov (United States)

    Mwipatayi, Bibombe Patrice; Perera, Kalpa; Daneshmand, Ali; Daniel, Rhys; Wong, Jackie; Thomas, Shannon D; Burrows, Sally A

    2018-02-01

    Purpose The present study aimed to determine the safety and efficacy of a drug-coated balloon inflated within a thin-strut self-expanding bare-metal stent in patients with severe and complex femoropopliteal occlusive disease. Methods This prospective study used the Pulsar-self-expanding stent and Passeo-18 Lux drug-coated balloon in patients with severe and complex femoropopliteal occlusive disease. The primary endpoint was the 12-month primary patency, and the secondary endpoints included 24-month primary patency, assisted primary patency, secondary patency, and clinically associated target lesion revascularisation. Results The study included 44 patients (51 limbs). The mean age of the patients was 67.6 ± 10.2 years, with 73% men. Chronic limb severity was classified as Rutherford Category III in 41% of the patients, stage IV in 31%, and stage V in 27%. Lesions were predominantly Trans-Atlantic Inter-Society Consensus (TASC 2007) D (51%) and C (45%), with 32 (63%) chronic total occlusions. Procedural success was obtained in all cases. The mean lesion length was 200 ± 74.55 mm (95% CI = 167.09-208.01) with a mean number of stents per limb used of 1.57 ± 0.70 (95% CI = 1.37-1.76). Distal embolisation occurred in two patients. The primary patency rates at the 12- and 24-month follow-up were 94% (95% CI = 82.9-98.1) and 88% (95% CI = 75.7-94.5), respectively. The assisted primary was 94% (95% CI = 82.9-98.1) and secondary patency was 96% (95% CI = 85.2-99.0) at 24-month follow-up. The cumulative stent fracture rate at the 24-month follow-up was 10%. Freedom from clinically driven target lesion revascularisation was 94% (95% CI = 83-98%) at 12-month follow-up and 88% (95% CI = 76-94%) at 24-month follow-up, with two patients requiring a bypass graft. Conclusion Our novel approach involving the combination of a thin-strut bare-metal stent and a drug-coated balloon may be safe and effective, with sustainable and promising

  9. Endovascular repair of arterial iliac vessel wall lesions with a self-expandable nitinol stent graft system.

    Directory of Open Access Journals (Sweden)

    Birger Mensel

    Full Text Available To assess the therapeutic outcome after endovascular repair of iliac arterial lesions (IALs using a self-expandable Nitinol stent graft system.Between July 2006 and March 2013, 16 patients (13 males, mean age: 68 years with a self-expandable Nitinol stent graft. A total of 19 lesions were treated: nine true aneurysms, two anastomotic aneurysms, two dissections, one arteriovenous fistula, two type 1B endoleaks after endovascular aneurysm repair, one pseudoaneurysm, and two perforations after angioplasty. Pre-, intra-, and postinterventional imaging studies and the medical records were analyzed for technical and clinical success and postinterventional complications.The primary technical and clinical success rate was 81.3% (13/16 patients and 75.0% (12/16, respectively. Two patients had technical failure due to persistent type 1A endoleak and another patient due to acute stent graft thrombosis. One patient showed severe stent graft kinking on the first postinterventional day. In two patients, a second intervention was performed. The secondary technical and clinical success rate was 87.5% (14/16 and 93.8% (15/16. The minor complication rate was 6.3% (patient with painful hematoma at the access site. The major complication rate was 6.3% (patient with ipsilateral deep vein thrombosis. During median follow-up of 22.4 months, an infection of the aneurysm sac in one patient and a stent graft thrombosis in another patient were observed.Endovascular repair of various IALs with a self-expandable Nitinol stent graft is safe and effective.

  10. Outcomes of the Use of Fully Covered Esophageal Self-Expandable Stent in the Management of Colorectal Anastomotic Strictures and Leaks

    Directory of Open Access Journals (Sweden)

    Chad J. Cooper

    2014-01-01

    Full Text Available Introduction. Colorectal anastomotic leak or stricture is a dreaded complication leading to significant morbidity and mortality. The novel use of self-expandable metal stents (SEMS in the management of postoperative colorectal anastomotic leaks or strictures can avoid surgical reintervention. Methods. Retrospective study with particular attention to the indications, operative or postoperative complications, and clinical outcomes of SEMS placement for patients with either a colorectal anastomotic stricture or leak. Results. Eight patients had SEMS (WallFlex stent for the management of postoperative colorectal anastomotic leak or stricture. Five had a colorectal anastomotic stricture and 3 had a colorectal anastomotic leak. Complete resolution of the anastomotic stricture or leak was achieved in all patients. Three had recurrence of the anastomotic stricture on 3-month flexible sigmoidoscopy follow-up after the initial stent was removed. Two of these patients had a stricture that was technically too difficult to place another stent. Stent migration was noted in 2 patients, one at day 3 and the other at day 14 after stent placement that required a larger 23 mm stent to be placed. Conclusions. The use of SEMS in the management of colorectal anastomotic leaks or strictures is feasible and is associated with high technical and clinical success rate.

  11. Delayed ischemic cecal perforation despite optimal decompression after placement of a self-expanding metal stent: report of a case

    DEFF Research Database (Denmark)

    Knop, Filip Krag; Pilsgaard, Bo; Meisner, Søren

    2004-01-01

    condition. Three days after stent deployment, x-ray examinations revealed a small-bowel obstruction and emergency surgery was performed. Intraoperative findings demonstrated a segment of ileum fixated to the tumor in the small pelvis, resulting in the obstructive condition. Furthermore, a cecal perforation...

  12. Percutaneous placement of self-expandable metallic stents in patients with obstructive janudice secondary to metastalic gastric cancer after gastrectomy

    Energy Technology Data Exchange (ETDEWEB)

    Hong, Hyun Pyo [Dept. of Radiology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul (Korea, Republic of); Seo, In Ho; Yu, Jung Rim; Mok, Young Jae; Oh, Joo Hyeong [Korea University Guro Hospital, Korea University College of Medicine, Seoul (Korea, Republic of); Kwon, Se Hwan [Dept. of Radiology, Kyung Hee University Medical Center, Seoul (Korea, Republic of); Kim, Sam Soo [Dept. of Radiology, Kangwon National University College of Medicine, Chuncheon (Korea, Republic of); Kim, Seung Kwon [Division of Interventional Radiology, Mallinckrodt Institute of Radiology, Washington University School of Medicine, St. Louis (United States)

    2013-10-15

    To evaluate the outcomes of patients undergoing percutaneous placements of a biliary stent for obstructive jaundice secondary to metastatic gastric cancer after gastrectomy. Fifty patients (mean age, 62.4 years; range, 27-86 years) who underwent percutaneous placements of a biliary stent for obstructive jaundice secondary to metastatic gastric cancer after gastrectomy were included. The technical success rate, clinical success rate, complication rate, stent patency, patient survival and factors associated with stent patency were being evaluated. The median interval between the gastrectomy and stent placement was 23.1 months (range, 3.9-94.6 months). The 50 patients received a total of 65 stents without any major procedure-related complications. Technical success was achieved in all patients. The mean total serum bilirubin level, which had been 7.19 mg/dL ± 6.8 before stent insertion, decreased to 4.58 mg/dL ± 5.4 during the first week of follow-up (p < 0.001). Clinical success was achieved in 42 patients (84%). Percutaneous transhepatic biliary drainage catheters were removed from 45 patients (90%). Infectious complications were noted in two patients (4%), and stent malfunction occurred in seven patients (14%). The median stent patency was 233 ± 99 days, and the median patient survival was 179 ± 83 days. Total serum bilirubin level after stenting was an independent factor for stent patency (p = 0.009). Percutaneous transhepatic placement of a biliary stent for obstructive jaundice secondary to metastatic gastric cancer after gastrectomy is a technically feasible and clinically effective palliative procedure.

  13. [Solving of complications arising during and after application self-expandible metallic stents in palliation of malignant dysphagia].

    Science.gov (United States)

    Saranović, Dj Z; Djurić-Stefanović, A; Ivanović, A M; Masulović, D M; Lazić, Lj R; Marković, Z R; Pesko, P M

    2009-01-01

    During palliative treatment of malignant disphagia in inoperabile patients various and serious complications may occur and compromite the method of treatment if there were not solved. Goal is to present the most frequent complications due to esophageal stenting and the way of their solving. From 1996. to 2009. in 237 patients (164 esophageal carcinoma, 33 carcinoma of the esophagogastric junction, 14 bronchial carcinoma, 7 esophagojejunal anastomosis, 9 esophageal fistulas) 245 stents have been placed (54 uncovered and 191 covered). Mean survival period was 14.7 months (ranged from 1 do 33 months). Esophageal perforation (1), stent migration (9), malignant tissue ingrowth (31) and overgrowth (24) have been revealed by barium contrast study during follow up. Perforation was solved by placing covered stent, migration by removing migrated stent endoscopically or surgically, ingrowth and overgrowth by balon dilating or restenting under the fluoroscopically guidance and control. One can expect and recognize complications regarding esophageal stenting because it is the only way for their sucsessfull treatment.

  14. Self-expandable vascular stent covered with polyurethane membrane: an experimental preliminary study of a placement in the thoracic descending aorta of a rabbit using endovascular intervention.

    Science.gov (United States)

    Uematsu, M; Okada, M

    2000-04-01

    The effectiveness of self-expandable vascular endoprosthesis covered with polyurethane membrane for arterial substitution was examined in the descending thoracic aorta of a rabbit, followed by an observation period of 937 days. In this model there was no evidence of thrombus, aneurysmal formation, and/or infection. The self-expandable vascular stent covered with a polyurethane membrane showed long-term patency as well as excellent function, and the histological evaluation revealed endothelial cells covering all of the surface of the endoprosthesis, as was expected. Minimal intimal hyperplasia and no calcifica-tion were demonstrated in any portions. This study suggests that our newly designed self-expandable vascular stent covered with a polyurethane membrane could serve as a satisfactory vascular endoprosthesis with a good long-term patency for substitution. Furthermore, stenting using our model is a safe, simple technique, and an effective treatment for vascular remodeling.

  15. Metal-Free Functionalization of N,N-Dialkylanilines via Temporary Oxidation to N,N-Dialkylaniline N-Oxides and Group Transfer

    Science.gov (United States)

    2015-01-01

    A simple set of protocols for the controlled elaboration of anilines is reported allowing access to a diverse array of aminophenols, aminoarylsulfonates, alkylated anilines, and aminoanilines in 29–95% yield in a single laboratory operation from easily isolable, bench-stable N,N-dialkylaniline N-oxides. The introduction of new C–O, C–C, and C–N bonds on the aromatic ring is made possible by a temporary increase in oxidation level and excision of a weak N–O bond. PMID:24992642

  16. Biocompatibility of a new device of self-expandable covered and non-covered tracheal stent: comparative study in rats

    Directory of Open Access Journals (Sweden)

    Olavo Ribeiro Rodrigues

    2013-01-01

    Full Text Available PURPOSE: To investigate the compatibility of a new model of self-expandable tracheal stent in rats. METHODS: A new device of polyurethane covered and non - covered stent was placed in the trachea of Wistar rats. Animals were distributed in two groups: the polyurethane covered and non-covered group. Macroscopic parameters included position within the tracheal lumen, adherence to the mucosa, degree of dilatation, permeability and internal diameter. Microscopic findings evaluated were: incorporation, inflammatory activity, granulation tissue and epithelial revetment injuries. The observation follow-up was six weeks. All parameters were quantified based on determined score values. Incorporation of the stents was evaluated based on the observation if the stent was fixed into the trachea or if it could be removed. Degree of dilatation was performed by external diameter measurements. Granulation tissue was evaluated by measurements of height of the tissue growing into the tracheal lumen. RESULTS: 100% of non-covered stents had total attachment to mucosa and 100% of polyurethane covered type had adherence only. Regarding dilatation, granulation tissue, inflammatory activity and internal diameter measurements, there were no significant differences between the groups. Pathological tracheal wall injuries were present in both groups. CONCLUSION: Both models of stent demonstrated biocompatibility with the trachea. Rats are suitable for an experimental model of tracheal stent study.

  17. High performance bio-based hyperbranched polyurethane/carbon dot-silver nanocomposite: a rapid self-expandable stent.

    Science.gov (United States)

    Duarah, Rituparna; Singh, Yogendra P; Gupta, Prerak; Mandal, Biman B; Karak, Niranjan

    2016-10-27

    Development of a bio-based smart implantable material with multifaceted attributes of high performance, potent biocompatibility and inherent antibacterial property, particularly against drug resistant bacteria, is a challenging task in biomedical domain. Addressing these aspects at the bio-nano interface, we report the in situ fabrication of starch modified hyperbranched polyurethane (HPU) nanocomposites by incorporating different weight percentages of carbon dot-silver nanohybrid during polymerization process. This nanohybrid and its individual nanomaterials (Ag and CD) were prepared by facile hydrothermal approaches and characterized by various instrumental techniques. The structural insight of the nanohybrid, as well as its nanocomposites was evaluated by TEM, XRD, FTIR, EDX and thermal studies. The significant improvement in the performance in terms of tensile strength (1.7 fold), toughness (1.5 fold) and thermal stability (20 °C) of the pristine HPU was observed by the formation of nanocomposite with 5 wt.% of nanohybrid. They also showed notable shape recovery (99.6%) and nearly complete self-expansion (>99%) just within 20s at (37 ± 1) °C. Biological assessment established in vitro cytocompatibility of the HPU nanocomposites. The fabricated nanocomposites not only assisted the growth and proliferation of smooth muscle cells and endothelial cells that exhibited reduced platelet adhesion but also displayed in vitro hemocompatibility of mammalian RBCs. Significantly, the antibacterial potency of the nanocomposites against Escherichia coli MTCC 40 and Staphylococcus aureus MTCC 3160 bacterial strains vouched for their application to countercheck bacterial growth, often responsible for biofilm formation. Thus, the present work forwards the nanocomposites as potential tough infection-resistant rapid self-expandable stents for possible endoscopic surgeries.

  18. Effect of Early Use of Covered Self-Expandable Endoscopic Stent on the Treatment of Postoperative Stapler Line Leaks.

    Science.gov (United States)

    Quezada, Nicolás; Maiz, Cristóbal; Daroch, David; Funke, Ricardo; Sharp, Allan; Boza, Camilo; Pimentel, Fernando

    2015-10-01

    Postoperative leaks are a dreaded complication after bariatric surgery (BS). Its treatment is based on nutritional support and sepsis control by antibiotics, collections drainage and/or prosthesis, and/or surgery. The aim of this study is to report our experience with coated self-expandable endoscopic stents (SEES) for leaks treatment. This study was performed in a University Hospital, (censored). We performed a retrospective analysis of our BS database from January 2007 to December 2013. All patients with leak after BS treated with SEES were included. We identified 29 patients; 17 (59%) were women, with median age of 37 (19-65) years, and preoperative body mass index of 40 (28.7-56-6) kg/m(2). Nineteen (65.5%) patients had a sleeve gastrectomy and 10 (34.5%) a Roux-en-Y gastric bypass. All patients had a leak in the stapler line. Median time from surgery to leak diagnosis was 7 (1-51) days, and SEES were installed 8 (0-104) days after diagnosis. Twenty-one (72%) patients also had abdominal exploration. Median length of SEES use was 60 (1-299) days. Patients who had SEES as primary treatment (with or without simultaneous reoperation) had a shorter leak closure time (50 [6-112] vs 109 [60-352] days; p = 0.008). Twenty-eight (96.5%) patients successfully achieved leak closure with SEES. There were 16 migrations in 10 (34%) patients, 1 (3%) stent fracture, 1 opening of the blind end of alimentary limb (3%), and 5 patients (17%) required a second stent due to leak persistence. SEES is a feasible, safe, and effective management of post BS leaks, although patients may also require prosthesis revision and abdominal exploration. Primary SEES placement is associated with a shorter leak resolution time.

  19. The Temporary Leave Dilemma -

    DEFF Research Database (Denmark)

    Amilon, Anna

    2010-01-01

    Lone mothers have to take care of a sick child with little or no help from the child’s other parent and have to carry all costs connected to leave-taking. This paper empirically tests whether lone mothers take more temporary parental leave to care for sick children than partnered mothers...... and whether parental leave is associated with a signaling cost. The results from this study of Swedish mothers show that lone mothers use more temporary parental leave than partnered mothers. Further, within the group of lone mothers, those with higher socioeconomic status take less temporary parental leave...... than those with lower socioeconomic status, whereas no such differences are found within the group of partnered mothers. One possible interpretation is that signaling costs negatively influence the utilization of temporary parental leave for lone mothers....

  20. Temporary internal pacing.

    Science.gov (United States)

    Ortiz Díaz-Miguel, R; Gómez Grande, M L

    2014-12-01

    Technology and insertion techniques for cardiac temporary internal pacing have experienced a remarkable development over the last few years. Despite this fact, the procedure continues to have potentially fatal associated complications. Temporary internal pacing is indicated for the treatment of bradyarrhythmias or tachyarrhythmias refractory to conventional treatment, or arrhythmias causing cardiovascular or clinical instability of the patient. On the other hand, the indications of temporary cardiac pacing are far less well defined than those of permanent pacing. Since the decision of implementing temporary pacing is complex and delicate, it should always be carefully considered, and over-indication should be avoided. We must base these decisions on robust knowledge of the arrhythmias that may benefit from temporary internal pacing, and should also acquire the habit of considering external temporary pacing among other less aggressive treatments, and to make the best use of new technologies such as echocardiography that add accuracy to the procedure. Copyright © 2013 Elsevier España, S.L.U. y SEMICYUC. All rights reserved.

  1. Evaluation of a Bioabsorbable Self-Expandable Vein Stent-Base Made of Poly(L-lactide) In Vitro and In Vivo

    DEFF Research Database (Denmark)

    Løvdal, Alexandra Liv Vest; Calve, Sarah; Yang, Shuo

    2017-01-01

    Purpose  This study was designed to evaluate performance and tissue response to a self-expandable bioabsorbable vein stent-base cut from a tube with enhanced stiffness and strength in vitro and in vivo. Methods  A diamond-shaped stent-base was cut from a sequential biaxially strained poly(L-lacti......  A bioabsorbable self-expandable stent-base made from PLLA for large veins seems feasible, but over time, the PLLA used in this study appears too stiff and lacks the sufficient flexibility to move with the vena cava, causing multiple fractures.......Purpose  This study was designed to evaluate performance and tissue response to a self-expandable bioabsorbable vein stent-base cut from a tube with enhanced stiffness and strength in vitro and in vivo. Methods  A diamond-shaped stent-base was cut from a sequential biaxially strained poly...... connecting points. Fragments of the caudal stent-base stayed in the vein wall indicating sufficient tissue coverage to avoid embolization of the fractured stent pieces, whereas fragments from the cranial device remaining were few. Neointima formation was confirmed histologically at 2 and 3½ weeks. Conclusion...

  2. Two-year Clinical Outcomes Post Implantation of Epic(TM) Self-Expanding Nitinol Stents for the Aortoiliac Occlusive Disease in Patients with Peripheral Arterial Disease.

    Science.gov (United States)

    Tsujimura, Takuya; Iida, Osamu; Fujita, Masashi; Masuda, Masaharu; Okamoto, Shin; Ishihara, Takayuki; Nanto, Kiyonori; Kanda, Takashi; Okuno, Shota; Matsuda, Yasuhiro; Fujihara, Masahiko; Yokoi, Yoshiaki; Mano, Toshiaki

    2017-10-05

    We investigated 2-year clinical outcomes after implantaton of Epic(TM) self-expanding nitinol stents for patients with peripheral artery disease (PAD) due to the aortoiliac occlusive disease (AIOD). This study was a multicenter and retrospective study. From February 2013 through October 2014, 292 lesions (chronic total occlusion, 21%; TASC Ⅱ C/D, 35%) in 217 consecutive patients (74±8 years; male, 81%; diabetes mellitus, 47%; dialysis, 21%; critical limb ischemia, 29%) who had undergone endovascular therapy (EVT) with Epic(TM) self-expanding nitinol stents for PAD with AIOD were analyzed. The primary endpoints were 2-year primary patency and target lesion revascularization (TLR)-free rate. The primary patency and freedom from TLR were determined by Kaplan-Meier analysis. Additionally, predictors for loss of patency were estimated by Cox proportional hazard model. The mean follow-up duration was 19.1±8.5 months. Primary patency was 87.3% at 2 years. Freedom from TLR rate was 94.1% at 2 years. Multivariate analysis revealed that the presence of diabetes mellitus was associated with a loss of patency. The Epic(TM) self-expanding nitinol stent was demonstrated to be safe and effectivene for AIOD when tested for two years in patients with PAD.

  3. Temporary labour contracts

    CERN Document Server

    1999-01-01

    The five contracts for Temporary Labour assignments on the CERN site (L020/PE, L021/PE, L022/PE, L023/PE and L024/PE) approved by the Finance Committee in March 1996 (CERN/FC/3857) will reach the end of their initial three-year contractual period at the end of December 1999. Following the satisfactory execution of these contracts during this period, CERN requests approval to extend them from January 2000 for the first of the two years foreseen in the original adjudication. The Finance Committee is invited: - to take note that the three-year expenditure for Temporary Labour contracts from 1997 to 1999 will not exceed 19 100 000 Swiss francs, compared to the 18 900 000 Swiss francs estimated at the time of the adjudication in March 1996; - to approve an extension of the present Temporary Labour contracts for the year 2000 for a total amount not exceeding 6 000 000 Swiss francs.

  4. Refinement of a thrombectomy technique to treat acute ischemic stroke: Technical note on microcatheter advance during retrieving self expandable stent

    Energy Technology Data Exchange (ETDEWEB)

    Youn, Sung Won; Kim, Ho Kyun [Catholic Univ. of Daegu School of Medicine, Daegu (Korea, Republic of)

    2012-07-15

    Temporary stenting and thrombectomy by use of the Solitaire stent (ev3, Irvine, CA, USA) has shown prompt and successful recanalization of the acutely occluded major cerebral artery. However, even if rarely reported, inadvertent stent detachment may occur as an innate drawback and full deployment of the stent was considered to increase the risk. In our patients, the Solitaire stent did not fully unfold to prevent inadvertent detachment. Before retrieval of the stent, the tip of the microcatheter was advanced forward carefully under fluoroscopic observation until it met the presumed thrombus segment and a subtle sense of resistance was felt in the fingers guiding the stent. After retrieval, complete recanalization was achieved, and the thrombus was trapped between the tip of the microcatheter and the stent strut. We present 2 cases of successful thrombi captures by advancing a microcatheter during Solitaire stent retrieval, and we suggest that advancing the microcatheter can be a useful refinement to the thrombectomy technique for acute ischemic stroke.

  5. Complex bifurcation lesions: Randomized comparison of a fully bioresorbable modified t stenting strategy versus bifurcation reconstruction with a dedicated self-expanding stent in combination with bioresorbable scaffolds, an OCT study: Rationale and design of the COBRA II trial.

    Science.gov (United States)

    Bennett, J; Adriaenssens, T; Desmet, W; Dubois, C

    2016-11-15

    There is an ongoing controversy regarding the efficacy and safety of different percutaneous stenting techniques for coronary bifurcation lesions needing >1 stent. The promise of safe vessel restoration with bioresorbable scaffolds (BRS) may not be transferable to complex double BRS bifurcation techniques, and permanent metallic scaffolding of the bifurcation core may be needed. We identified modified-T stenting as the most promising fully bioresorbable 2-stent strategy in a preclinical setting. The objective of this study is to assess acute performance and compare long-term vessel healing with this strategy, versus an approach combining BRS with a dedicated metallic drug-eluting bifurcation stent. In a single center, 60 consecutive patients with true and complex coronary bifurcation lesions will be randomly assigned to treatment with the dedicated self-expanding Axxess™ biolimus-eluting bifurcation stent in the proximal main vessel and additional Absorb™ everolimus-eluting BRS in the branches versus a modified T technique using Absorb™ only. Angiography and optical coherence tomography (OCT) will be performed immediately after implantation and at 30 months, and clinical follow-up is foreseen up to 5 years after implantation. The primary endpoint is the change in minimal luminal area assessed with OCT from baseline to 30 months in pre-specified bifurcation segments. To date the use of Absorb™ BRS in complex coronary bifurcations has not been evaluated in a randomized clinical trial setting. The COBRA II study will examine the role and safety of a double BRS strategy in coronary bifurcations, alone or in combination with a metallic dedicated bifurcation device. © 2016 Wiley Periodicals, Inc. © 2016 Wiley Periodicals, Inc.

  6. Essays on temporary migration

    OpenAIRE

    Mestres Domenech, J.

    2012-01-01

    My thesis dissertation focuses on the temporariness of migration, its diverse effects as well as on migration selection. The first paper, A Dynamic Model of Return Migration analyzes the decision process underlying return migration using a dynamic model. We explain how migrants decide whether to stay or to go back to their home country together with their savings and consumption decisions. We simulate our model with return intentions and perform policy simulations. The se...

  7. Simulations of Self-Expanding Braided Stent Using Macroscopic Model of NiTi Shape Memory Alloys Covering R-Phase

    Science.gov (United States)

    Frost, M.; Sedlák, P.; Kruisová, A.; Landa, M.

    2014-07-01

    Self-expanding stents or stentgrafts made from Nitinol superelastic alloy are widely used for a less invasive treatment of disease-induced localized flow constriction in the cardiovascular system. The therapy is based on insertion of a stent into a blood vessel to maintain the inner diameter of the vessel; it provides highly effective results at minimal cost and with reduced hospital stays. However, since stent is an external mechanical healing tool implemented into human body for quite a long time, information on the mechanical performance of it is of fundamental importance with respect to patient's safety and comfort. Advantageously, computational structural analysis can provide valuable information on the response of the product in an environment where in vivo experimentation is extremely expensive or impossible. With this motivation, a numerical model of a particular braided self-expanding stent was developed. As a reasonable approximation substantially reducing computational demands, the stent was considered to be composed of a set of helical springs with specific constrains reflecting geometry of the structure. An advanced constitutive model for NiTi-based shape memory alloys including R-phase transition was employed in analysis. Comparison to measurements shows a very good match between the numerical solution and experimental results. Relation between diameter of the stent and uniform radial pressure on its surface is estimated. Information about internal phase and stress state of the material during compression loading provided by the model is used to estimate fatigue properties of the stent during cyclic loading.

  8. Evaluation of a Bioabsorbable Self-Expandable Vein Stent-Base Made of Poly(l-lactide) In Vitro and In Vivo

    Energy Technology Data Exchange (ETDEWEB)

    Løvdal, Alexandra Liv Vest, E-mail: alvlo@nanotech.dtu.dk [Technical University of Denmark, Department of Micro- and Nanotechnology (Denmark); Calve, Sarah [Purdue University, Weldon School of Biomedical Engineering (United States); Yang, Shuo; Alstine, William Van [Cook Research Incorporated (United States); Binkert, Christoph A. [Institut für Radiologie, Kantonsspital Winterthur (Switzerland); Klausen, Kasper [William Cook Europe (Denmark)

    2017-01-15

    PurposeThis study was designed to evaluate performance and tissue response to a self-expandable bioabsorbable vein stent-base cut from a tube with enhanced stiffness and strength in vitro and in vivo.MethodsA diamond-shaped stent-base was cut from a sequential biaxially strained poly(l-lactide) (PLLA) tube for optimized performance. The performance of the stent-base was evaluated in a finite element analysis model, and validation was attempted in vitro through a cyclic flat-plate compression and radial force measurement. The performance of the stent-base was tested in vivo using 3 sheep with 2 implants each for 2 and 3½ weeks, respectively.ResultsIn vitro the stent-base showed an elliptical deformation but no fractures. In vivo the stent-base showed adequate radial force and no migration. All implanted stent-bases showed multiple fractures not only at the predicted stress zones but at all connecting points. Fragments of the caudal stent-base stayed in the vein wall indicating sufficient tissue coverage to avoid embolization of the fractured stent pieces, whereas fragments from the cranial device remaining were few. Neointima formation was confirmed histologically at 2 and 3½ weeks.ConclusionA bioabsorbable self-expandable stent-base made from PLLA for large veins seems feasible, but over time, the PLLA used in this study appears too stiff and lacks the sufficient flexibility to move with the vena cava, causing multiple fractures.

  9. A temporary face support

    Energy Technology Data Exchange (ETDEWEB)

    Popov, V.I.; Bakhtin, V.N.; Tolkachev, N.I.

    1980-03-30

    A temporary face support is proposed. It includes a beam supported by hydraulic jacks on the housing of the cutter-loader with a working tool and rotary pressure regulator. It differs in that to decrease the volume of unsecured roofing in the face space between the leading edge of the beam and the cutting tool of the cutter-loader, the beam is hinged onto the housing of the rotary pressure regulator by a fastened connecting rod, and the hydraulic jacks are provided with additional powered elements with a mechanism that regulates the length of the cut-off plate of the hydraulic pump when the seam pressure changes.

  10. Bench-top Comparison of Physical Properties of 4 Commercially-Available Self-Expanding Intracranial Stents.

    Science.gov (United States)

    Cho, Su-Hee; Jo, Won-Il; Jo, Ye-Eun; Yang, Ku Hyun; Park, Jung Cheol; Lee, Deok Hee

    2017-03-01

    To better understand the performance of four commercially available neurovascular stents in intracranial aneurysm embolization, the stents were compared in terms of their basic morphological and mechanical properties. Four different types of stents that are currently being used for cerebral aneurysm embolization were prepared (two stents per type). Two were laser-cut stents (Neuroform and Enterprise) and two were braided from a single nitinol wire (LEO and LVIS stents). All were subjected to quantitative measurements of stent size, pore density, metal coverage, the force needed to load, push, and deploy the stent, radial force on deployment, surface roughness, and corrosion resistance. Compared to their nominal diameters, all stents had greater diameters after deployment. The length generally decreased after deployment. This was particularly marked in the braided stents. The braided stents also had higher pore densities than the laser-cut stents. Metal coverage was highest in the LEO stent (14%) and lowest in the Enterprise stent (5%). The LIVS stent had the highest microcatheter loading force (81.5 gf). The LEO stent had the highest passage force (55.0 gf) and deployment force (78.9 gf). The LVIS and LEO stents had the highest perpendicular (37.1 gf) and circumferential (178.4 gf) radial forces, respectively. The Enterprise stent had the roughest stent wire, followed by the LVIS, LEO, and Neuroform stents. The four neurovascular stent types differed in terms of morphological and physical characteristics. An understanding of this diversity may help to decide which stent is most suitable for specific clinical situations.

  11. Systematic review: Temporary stent placement for benign ruptures or anastomotic leaks with special emphasis on stent type

    OpenAIRE

    2011-01-01

    Abstract Background: Placement of self-expanding metal stents (SEMS) or plastic stents (SEPS) has emerged as a minimally invasive treatment option for benign esophageal ruptures and leaks; however, it is not clear which stent type should be preferred. Aim & Methods: A pooled analysis was performed after searching PubMed and EMBASE databases for studies regarding placement of fully covered and partially covered SEMS (FSEMS and PSEMS) and SEPS for this indication. Data were pool...

  12. Evaluation of a Bioabsorbable Self-Expandable Vein Stent-Base Made of Poly(L-lactide) In Vitro and In Vivo

    DEFF Research Database (Denmark)

    Løvdal, Alexandra Liv Vest; Calve, Sarah; Yang, Shuo

    2017-01-01

    Purpose  This study was designed to evaluate performance and tissue response to a self-expandable bioabsorbable vein stent-base cut from a tube with enhanced stiffness and strength in vitro and in vivo. Methods  A diamond-shaped stent-base was cut from a sequential biaxially strained poly...... connecting points. Fragments of the caudal stent-base stayed in the vein wall indicating sufficient tissue coverage to avoid embolization of the fractured stent pieces, whereas fragments from the cranial device remaining were few. Neointima formation was confirmed histologically at 2 and 3½ weeks. Conclusion......(L-lactide) (PLLA) tube for optimized performance. The performance of the stent-base was evaluated in a finite element analysis model, and validation was attempted in vitro through a cyclic flat-plate compression and radial force measurement. The performance of the stent-base was tested in vivo using 3 sheep with 2...

  13. Prevention of Intracranial In-stent Restenoses: Predilatation with a Drug Eluting Balloon, Followed by the Deployment of a Self-Expanding Stent

    Energy Technology Data Exchange (ETDEWEB)

    Vajda, Zsolt, E-mail: Z.Vajda@klinikum-stuttgart.de; Guethe, Thomas, E-mail: T.Guethe@klinikum-stuttgart.de; Perez, Marta Aguilar, E-mail: M.Aguilar@klinikum-stuttgart.de; Kurre, Wiebke, E-mail: w.kurre@klinikum-stuttgart.de [Klinikum Stuttgart, Katharinenhospital, Klinik fuer Neuroradiologie, Neurozentrum (Germany); Schmid, Elisabeth, E-mail: ESchmid@klinikum-stuttgart.de; Baezner, Hansjoerg, E-mail: H.Baezner@klinikum-stuttgart.de [Klinikum Stuttgart, Klinik fuer Neurologie, Neurozentrum (Germany); Henkes, Hans, E-mail: hhhenkes@aol.com [Klinikum Stuttgart, Katharinenhospital, Klinik fuer Neuroradiologie, Neurozentrum (Germany)

    2013-04-15

    Stenting in intracranial atherosclerotic disease (ICAD) is increasingly debated, due to issues of procedural safety, technical efficacy, and in-stent recurrent stenoses (ISR). In the present study, feasibility, safety, and efficacy of angioplasty using a drug-eluting balloon (DEB) followed by the implantation of a self-expanding stent (Enterprise) were evaluated for the treatment of ICAD lesions. Fifty-two patients (median age: 71 years; range: 54-86 years; male/female ratio 37:15) underwent stenting of high-grade ICAD lesions between February 2010 and November 2011 in a single center. Angioplasty using a paclitaxel coated SeQuent Please (B. Braun, Germany) or DIOR (Eurocor, Germany) coronary PTCA balloon, followed by the implantation of a self-expanding stent (Enterprise, Codman, USA) was performed in 54 lesions. Angiographic and clinical follow-up was performed at 6 and 12 weeks, 6 and 12 months, and yearly thereafter. Technical success rate, periprocedural complications, occurrence of recurrent ischemic symptoms, and the development of an ISR were analyzed. Angioplasty using a DEB followed by stent implantation was successfully performed in 44 (81 %) cases. DEB insertion failed in 19 % of the cases and angioplasty was finally performed using a conventional PTCA balloon. The combined procedure related permanent neurologic morbidity and mortality rate (stroke, ICH, and subarachnoid hemorrhage) at 30 days and beyond was 5 %. Angiographic and clinical follow-up were obtained in 33 (61 %) lesions in 32 patients. Recurrent stenosis was seen in one (3 %) lesion. Angioplasty and stenting using a DEB is safe and yields encouragingly low ISR rates. Further technical developments to improve lesion accessibility are, nevertheless, mandatory.

  14. Transcatheter implantation of self-expandable valved prosthesis in outlet right ventricle an experimental study in pigs.

    Science.gov (United States)

    Guilhen, José Cícero Stocco; Palma, José Honório; Gaia, Diego Felipe; Araujo, Andre Telis Vilela de; Teles, Carlos Alberto; Branco, João Nelson; Buffolo, Enio

    2011-01-01

    Patients with congenital heart disease who underwent pulmonary valvotomy or surgery to open the pulmonary valve ring are prone to develop residual pulmonary insufficiency or stenosis that may lead to right heart failure with clinical deterioration. These children require multiple interventions throughout their lives, which impose a high rate of morbidity and mortality. To develop a less invasive technique for implantation of a valved prosthesis through the right ventricle. The valved prosthesis consists of an auto expanding metal stent built with nitinol, surrounded with polyester, where the three leaflets of bovine pericardium were mounted. Twelve pigs were used to perform the implants. Echocardiographic control was performed immediately after implantation and one, four, eight and 12 weeks. One animal showed reflux of moderate to severe and three mild reflux. Transvalvular gradients measured before implantation ranged from 3 to 6 mmHg and that soon after the implant was increased, ranging from 7 to 45 mmHg. There was a decrease in these gradients during follow up and in only four of the twelve animals the gradients were above 20 mmHg. Thrombus formation occurred in the prosthesis of six animals, and this was the most frequent complication. These findings highlight the need for studies with the use of anticoagulants and antiplatelet, an attempt to reduce this event. The study aims to contribute for the start of the use of prosthetic heart valves that could be implanted through minimally invasive techniques without the use of cardiopulmonary bypass.

  15. Fracture resistance of various temporary crown materials.

    Science.gov (United States)

    Yilmaz, Asude; Baydaş, Seyfettin

    2007-01-01

    The aim of this study was to evaluate the fracture resistance of various provisional crown materials using an in vitro model test system. In the present study polycarbonate crowns, prefabricated by the manufacturer (3M Polycarbonate Crown), and the temporary crowns, fabricated in the dental laboratory environment, were fabricated using bis-acryl composite (Protemp II), autopolymerizing PMMA resin (BISICO Temp S), and heat-polymerized PMMA resin (Major C&B-V Dentine). All temporary crowns were stored in distilled water for 24 hours at room temperature prior to testing. The crowns were seated on metal dies, fabricated from Cr-Co alloy (AZ Dental, Konstanz, Germany), and then tested using the indenter of a Hounsfield testing machine (Hounsfield Tensometer, Hounsfield Test Equipment, Raydon, England). The tip of the indenter was located at a position one-third of the way down the inciso-palatine surface at 135 masculine. The data were statistically analyzed for differences using one-way analysis of variance (ANOVA) and the Tukey HSD test (P polycarbonate crowns were significantly different from the BISICO Temp S, Protemp II, and Major C&B-V Dentine (P polycarbonate crowns may be preferable to the other types of temporary crowns used in this study.

  16. Self-expandable Metal Stent Placement Combining Double Balloon Endoscopy with a Percutaneous Approach in a Roux-en-Y Hepaticojejunostomy

    NARCIS (Netherlands)

    Koornstra, Jan J.; Alkefaji, Heyder

    The use of the double balloon endoscope for ERCP in patients with surgically altered anatomy has shown to be safe and feasible. This technique permits a variety of diagnostic and therapeutic possibilities. A case is presented of a 38-year old male, admitted with jaundice, 8 months after surgery for

  17. Outcomes for the Commercial Use of Self-Expanding Prostheses in Transcatheter Aortic Valve Replacement: A Report From the STS/ACC TVT Registry.

    Science.gov (United States)

    Sorajja, Paul; Kodali, Susheel; Reardon, Michael J; Szeto, Wilson Y; Chetcuti, Stanley J; Hermiller, James; Chenoweth, Sharla; Adams, David H; Popma, Jeffrey J

    2017-10-23

    The authors sought to compare the outcomes of commercial transcatheter aortic valve replacement (TAVR) with the repositionable Evolut R platform to those observed with the CoreValve device in the Society of Thoracic Surgeons (STS)/American College of Cardiology (ACC) Transcatheter Valve Therapy (TVT) Registry. TAVR continues to evolve, with rapid adoption of iterative changes for commercial practice. Insight into the outcomes of this adoption is needed. Patients in the TVT Registry who had TAVR using a 23-, 26-, or 29-mm self-expanding prosthesis were enrolled. Site-reported events for procedural, in-hospital, and 30-day outcomes were examined. Between January 2014 and April 2016, 9,616 patients underwent TAVR with a self-expanding prosthesis with data entered in the TVT Registry. Compared with patients treated with CoreValve TAVR, those who received Evolut R TAVR had a lower STS-PROM score (8.0 ± 5.4% vs. 8.7 ± 5.3%; p < 0.001), more iliofemoral access (91.6% vs. 89.2%; p < 0.001), and more frequently had conscious sedation (27.4% vs. 12.7%; p < 0.001). With Evolut R TAVR, there was less need for a second prosthesis (2.2% vs. 4.5%; p < 0.001), less device migration (0.2% vs. 0.6%; p = 0.01), a lower incidence of moderate/severe paravalvular regurgitation (post-procedure, 4.4% vs. 6.2%; p < 0.001), and shorter median hospital stay (4.0 vs. 5.0 days; p < 0.001). Patients treated with Evolut R TAVR had greater device success (96.3% vs. 94.9%; p = 0.001). At 30 days, Evolut R patients had both lower mortality (3.7% vs. 5.3%; p < 0.001) and less need for a pacemaker (18.3% vs. 20.1%; p = 0.03). Commercial adoption of the Evolut R platform is associated with significant improvements in acute outcomes for patients undergoing TAVR for aortic stenosis. Copyright © 2017 American College of Cardiology Foundation. Published by Elsevier Inc. All rights reserved.

  18. Transcending Organization in Temporary Systems

    DEFF Research Database (Denmark)

    Stjerne, Iben Sandal

    Because of their temporary nature, work and employment in project based organizations are different from what we used to see in traditional organizational forms. Temporary employment, entailing less stability within the organization changes how employment and work are organized. Temporary systems...... are organized by transcending organization that go beyond the individual firm and replaces what used to be organized inside the firm. Following several calls for further research on these topics, this dissertation is a small step along the way as it investigates how work and employment are organized...... in temporary systems that lack stability and formal order. It advances our understanding of transcending organization in creative industries by adopting a practice based perspective. Empirically, the dissertation presents an in-depth study of the Danish film industry, which is an extreme case of a project...

  19. 42 CFR 488.415 - Temporary management.

    Science.gov (United States)

    2010-10-01

    ... 42 Public Health 5 2010-10-01 2010-10-01 false Temporary management. 488.415 Section 488.415... Compliance for Long-Term Care Facilities with Deficiencies § 488.415 Temporary management. (a) Definition. Temporary management means the temporary appointment by CMS or the State of a substitute facility manager or...

  20. Emergent intracranial balloon angioplasty and bailout self-expandable stent placement in acute large vessel occlusion of the anterior circulation: Experience of a single institution

    Energy Technology Data Exchange (ETDEWEB)

    Heo, Young Jin; Seo, Jung Hwa; Jeong, Hae Woong [Busan Paik Hospital, Inje University, Busan (Korea, Republic of)

    2017-06-15

    To evaluate the outcomes of angioplasty for recanalization after acute ischemic stroke (AIS). The study population was selected from 134 patients who underwent endovascular revascularization therapy (ERT) for AIS between October 2011 and May 2014. Of those 134 patients, 39 who underwent balloon angioplasty with or without stent insertion were included in this study. Balloon angioplasty was the primary treatment for nine patients and a rescue method for 30 patients. The revascularization rate at 7 days, procedure-related complications, and clinical outcomes at 3 months were analyzed. The occlusion sites were the middle cerebral artery (n = 26), intracranial internal carotid artery (n = 10), and middle cerebral artery branch (n = 3). Angioplasty achieved successful revascularization (Thrombolysis in Cerebral Ischemia grade 2b–3) in 76.9% of patients. Computed tomography angiography performed 7 days post-procedure revealed a maintained reperfusion in 82.8% of successful cases. Only two patients had symptomatic intracerebral hemorrhage. At the 3-month follow-up, 18 (48.6%) and 10 (27.0%) patients showed good and poor functional outcomes, respectively (modified Rankin Scale scores, 0–2 and 5–6). Emergent balloon angioplasty and bailout self-expandable stent placement may be safe and effective for achieving successful revascularization in acute large vessel occlusion of the anterior circulation. It could be a feasible rescue method as well as a primary method for ERT.

  1. Proof-of-Concept Evaluation of the SailValve Self-Expanding Deep Venous Valve System in a Porcine Model.

    Science.gov (United States)

    Boersma, Doeke; Vink, Aryan; Moll, Frans L; de Borst, Gert J

    2017-06-01

    To evaluate the SailValve, a new self-expanding deep venous valve concept based on a single polytetrafluoroethylene cusp floating up and down in the bloodstream like a sail, acting as a flow regulator and allowing minimal reflux to reduce thrombogenicity. Both iliac veins of 5 pigs were implanted with SailValve devices; the first animal was an acute pilot experiment to show the feasibility of accurately positioning the SailValve via a femoral access. The other 4 animals were followed for 2 weeks (n=2) or 4 weeks (n=2) under a chronic implantation protocol. Patency and valve function were evaluated directly in all animals using ascending and descending phlebography after device placement and at termination in the chronic implant animals. For reasons of clinical relevance, a regimen of clopidogrel and calcium carbasalate was administered. Histological analysis was performed according to a predefined protocol by an independent pathologist. Deployment was technically feasible in all 10 iliac veins, and all were patent directly after placement. No perioperative or postoperative complications occurred. Ascending phlebograms in the follow-up animals confirmed the patency of all valves after 2 or 4 weeks. Descending phlebograms showed full function in 5 of 8 valves. Limited reflux was seen in 1 valve (4-week group), and the function in the remaining 2 valves (2-week group) was insufficient because of malpositioning. No macroscopic thrombosis was noted on histology. Histology in the follow-up groups revealed a progressive inflammatory reaction to the valves. This animal study shows the potential of the SailValve concept with sufficient valve function after adequate positioning and no (thrombogenic) occlusions after short-term follow-up. Future research is essential to optimize valve material and long-term patency.

  2. Effect of ascending aortic dimension on acute procedural success following self-expanding transcatheter aortic valve replacement: A multicenter retrospective analysis.

    Science.gov (United States)

    Maeno, Yoshio; Yoon, Sung-Han; Abramowitz, Yigal; Watanabe, Yusuke; Jilaihawi, Hasan; Lin, Mao-Shin; Chan, Jason; Sharma, Rahul; Kawashima, Hideyuki; Israr, Sharjeel; Kawamori, Hiroyuki; Miyasaka, Masaki; Rami, Tanya; Kazuno, Yoshio; Mangat, Geeteshwar; Kashif, Mohammad; Chakravarty, Tarun; Kao, Hsien-Li; Lee, Michael Kang-Yin; Nakamura, Mamoo; Kozuma, Ken; Cheng, Wen; Makkar, Raj R

    2017-10-01

    Self-expanding (SE) valves are characterized with long stent frame design and the radial force of the device exists both in the inflow and outflow level. Therefore, we hypothesized that device success of SE-valves may be influenced by ascending aortic dimensions (AAD). The aim of this study was to determine the influence of AAD on acute device success rates following SE transcatheter aortic valve replacement (TAVR). In 4 centers in the United States and Asia, 214 consecutive patients underwent SE-TAVR. Outcomes were assessed in line with Valve Academic Research Consortium criteria. AAD was defined as the sum of the short and long axis aortic diameter divided by 2. Overall, device success rate was 85.0%. Multivariate analysis revealed that increased AAD (Odds ratio 1.27) and % oversizing (Odds ratio 0.88) were found to be independent predictors of unsuccessful device implantation. The c-statistic of the model for device success was area under the curve 0.79, sensitivity 81.3% and specificity 44.0%. Co-existence of several risk factors was associated with an exponential fall to 64.2% in device success rate. For a large AAD, however, optimally oversized SE-valves (threshold 16.2%) resulted with high device success rates compared to suboptimal oversizing (88.6% vs. 64.2%, p=0.005). Larger AAD and smaller degrees of oversizing were confirmed to be the most relevant predictors of unsuccessful device implantation following SE-valve implantations. Optimal oversizing of great significance was noted, particularly that with a large AAD. Copyright © 2017 Elsevier Ireland Ltd. All rights reserved.

  3. First percutaneous implantation of a completely tissue-engineered self-expanding pulmonary heart valve prosthesis using a newly developed delivery system: a feasibility study in sheep.

    Science.gov (United States)

    Spriestersbach, Hendrik; Prudlo, Antonia; Bartosch, Marco; Sanders, Bart; Radtke, Torben; Baaijens, Frank P T; Hoerstrup, Simon P; Berger, Felix; Schmitt, Boris

    2017-01-01

    In a European consortium, a decellularized tissue-engineered heart valve (dTEHV) based on vessel-derived cells, a fast-degrading scaffold and a self-expanding stent has been developed. The aim of this study was to demonstrate that percutaneous delivery is feasible. To implant this valve prosthesis transcutaneously into pulmonary position, a catheter delivery system was designed and custom made. Three sheep underwent transjugular prototype implantation. Intracardiac echocardiography (ICE), angiography and computed tomography (CT) were applied to assess the position, morphology, function and dimensions of the stented dTEHV. One animal was killed 3 h after implantation and two animals were followed up for 12 weeks. Explanted valves were analyzed macroscopically and microscopically. In all animals, the percutaneous implantation of the stented dTEHV was successful. The prototype delivery system worked at first attempt in all animals. In the first implantation a 22 F system was used: the valve was slightly damaged during crimping. Loading was difficult due to valve-catheter mismatch in volume. In the second and third implantation a 26 F system was used: the valves fitted adequately and stayed intact. Following implantation, these two valves showed moderate regurgitation due to insufficient coaptation. During follow-up, regurgitation increased due to shortened leaflets. At explantation, macroscopic and microscopic analysis confirmed the second and third valve to be intact. Histology revealed autologous recellularization of the decellularized valve after 12 weeks in vivo. It was demonstrated that completely in vitro tissue-engineered heart valves are thin and stable enough to be crimped and implanted transvenously into pulmonary position.

  4. A novel procedure for introducing large sheet-type surgical material with a self-expanding origami structure using a slim trocar (chevron pleats procedure).

    Science.gov (United States)

    Nakase, Yuen; Nakamura, Kei; Sougawa, Akira; Nagata, Tomoyuki; Mochizuki, Satoshi; Kitai, Shouzo; Inaba, Seishirou

    2016-12-30

    Large sheet-type surgical materials (e.g., absorbable hemostat, adhesion barrier membranes, and flat surgical mesh) are difficult to introduce into a corporeal cavity using a 5-mm trocar; however, laparoscopic surgeries that use mainly 5-mm trocars are increasing. Furthermore, it is necessary not only to introduce but also to secure the applied surgical material and expand it from the original surgical site. To address these challenges, we developed a novel procedure for introducing such surgical materials into a corporeal cavity using a 5-mm trocar and a self-expanding origami structure, called the "chevron pleats procedure (CPP)". We used CPP in 114 cases of laparoscopic surgery for gastrointestinal diseases. The chevron folding pattern is an excellent origami structure and compactly folds a large sheet of material for use with a slim trocar. Surgical materials were folded using a chevron pleats pattern and inserted into a novel, slim, long syringe-type device, which was made from a specially ordered precision polypropylene tube, for introduction into a corporeal cavity. When the surgical material was used, the end of the device was placed above the surgical site and the inner rod was pushed. The surgical material was securely injected and expanded over the surgical site. Surgical materials were introduced smoothly and securely using a 5-mm trocar to a site of intraoperative bleeding, the incisional surface of the liver, and defects of the abdominal wall or peritoneum. Efficient hemostasis was attained, the introduction and expansion of surgical mesh was made simpler, and the covering of defects of the peritoneum with adhesion barrier membranes, which is typically difficult during laparoscopic surgery, was easily performed. CPP is a basic utility procedure for introducing several sheet-type surgical materials into a corporeal cavity with a 5-mm trocar and might help ensure efficient and safe laparoscopic surgery.

  5. Prosthesis-patient mismatch in high-risk patients with severe aortic stenosis: A randomized trial of a self-expanding prosthesis.

    Science.gov (United States)

    Zorn, George L; Little, Stephen H; Tadros, Peter; Deeb, G Michael; Gleason, Thomas G; Heiser, John; Kleiman, Neal S; Oh, Jae K; Popma, Jeffrey J; Adams, David; Huang, Jian; Reardon, Michael J

    2016-04-01

    We compared the incidence of prosthesis-patient mismatch (PPM) between transcatheter aortic valve replacement (TAVR) using a self-expanding bioprosthesis and surgical aortic valve replacement (SAVR) in the CoreValve US High Risk Pivotal Trial. We sought to determine the influence of PPM on clinical outcomes. Patients with severe aortic stenosis and at increased risk for surgery were randomized 1:1 to TAVR or SAVR. Postoperative PPM was defined by the effective orifice area index (EOAi) as severe PPM (EOAi ≤ 0.65 cm(2)/m(2)) and no severe PPM (EOAi > 0.65 cm(2)/m(2)); clinical outcomes were analyzed in the TAVR arm (n = 389) and SAVR arm (n = 353). Left ventricular mass index and regression were analyzed at baseline and 1 year. The incidence of severe PPM in the SAVR group at 1 year was 25.7% versus 6.2% in the TAVR group (P < .0001). Left ventricular mass index regression at 1 year was 6.8% for TAVR and 15.1% for SAVR in patients with severe PPM. At 1 year the rate of all-cause mortality and acute kidney injury were significantly greater in all patients (TAVR + SAVR) with severe PPM compared with no severe PPM (20.6% vs 12.0% [P = .0145] for death and 19.2% vs 8.5% [P = .0008] for acute kidney injury). In patients with high surgical risk and severe aortic stenosis, severe PPM is more common in patients treated with SAVR than those treated with TAVR. Patients with severe PPM are a greater risk for death and acute kidney injury than patients without severe PPM. Copyright © 2016 The American Association for Thoracic Surgery. Published by Elsevier Inc. All rights reserved.

  6. Matched Comparison of Self-Expanding Transcatheter Heart Valves for the Treatment of Failed Aortic Surgical Bioprosthesis: Insights From the Valve-in-Valve International Data Registry (VIVID).

    Science.gov (United States)

    Alnasser, Sami; Cheema, Asim N; Simonato, Matheus; Barbanti, Marco; Edwards, Jeremy; Kornowski, Ran; Horlick, Eric; Wijeysundera, Harindra C; Testa, Luca; Bedogni, Francesco; Amrane, Hafid; Walther, Thomas; Pelletier, Marc; Latib, Azeem; Laborde, Jean-Claude; Hildick-Smith, David; Kim, Won-Keun; Tchetche, Didier; Agrifoglio, Marco; Sinning, Jan-Malte; van Boven, Ad J; Kefer, Joëlle; Frerker, Christian; van Mieghem, Nicolas M; Linke, Axel; Worthley, Stephen; Asgar, Anita; Sgroi, Carmelo; Aziz, Mina; Danenberg, Haim D; Labinaz, Marino; Manoharan, Ganesh; Cheung, Anson; Webb, John G; Dvir, Danny

    2017-04-01

    Transcatheter valve-in-valve implantation is an established therapy for high-risk patients with failed surgical aortic bioprosthesis. There are limited data comparing outcomes of valve-in-valve implantation using different transcatheter heart valves (THV). Patients included in the Valve-in-Valve International Data registry (VIVID) and treated with self-expanding THV devices were analyzed using centralized core laboratory blinded to clinical events. St. Jude Medical Portico versus Medtronic CoreValve were compared in a 1:2 fashion after propensity score matching. A total of 162 patients, Portico- (n=54) and CoreValve- (n=108) based valve-in-valve procedures comprised the study population with no significant difference in baseline characteristics (age, 79±8.2 years; 60% women; mean STS [Society of Thoracic Surgery] score 8.1±5.5%). Postimplantation, CoreValve was associated with a larger effective orifice area (1.67 versus 1.31 cm2; P=0.001), lower mean gradient (14±7.5 versus 17±7.5 mm Hg; P=0.02), and lower core laboratory-adjudicated moderate-to-severe aortic insufficiency (4.2% versus 13.7%; P=0.04), compared with Portico. Procedural complications including THV malpositioning, second THV requirement, or coronary obstruction were not significantly different between the 2 groups. Survival and stroke rates at 30 days were similar, but overall mortality at 1 year was higher among patients treated with Portico compared with CoreValve (22.6% versus 9.1%; P=0.03). In this first matched comparison of THVs for valve-in-valve implantations, Portico and CoreValve demonstrated differences in postprocedural hemodynamics and long-term clinical outcomes. Although this could be related to THV design characteristics, the impact of other procedural factors cannot be excluded and require further evaluation. © 2017 American Heart Association, Inc.

  7. Temporary Clusters and Knowledge Creation

    DEFF Research Database (Denmark)

    Maskell, Peter; Bathelt, Harald; Malmberg, Anders

    2004-01-01

    to distant markets and technologies. Third, it compares such temporaryclusters with permanent territorial hubs within their respective sector or industry. If regularparticipation in temporary clusters could satisfy a firm's need to learn through interactionwith suppliers, customers, peers and rivals, why...... or participating in such events are means toidentify the current market frontier, take stock of relative competitive positions and formfuture plans. These events exhibit many of the characteristics ascribed to permanentclusters, albeit in a temporary, periodic and intensified form. The temporary clusters...... is the phenomenon of permanent clusteringso pervasive?The answer, it is claimed, lies in the restrictions imposed on economic activity whenknowledge and ideas are transformed into valuable products and services. The paper shedsnew light on how interaction among firms in current clusters coincides...

  8. Objects as Temporary Autonomous Zones

    Directory of Open Access Journals (Sweden)

    Tim Morton

    2011-09-01

    Full Text Available From Hakim Bey's instructions on creating temporary autonomous zones we see an oscillation "between performance art and politics, circus clowning and revolution." In this essay Tim Morton discusses anarchist politics as, "the creation of fresh objects in a reality without a top or a bottom object, or for that matter a middle object."

  9. Nursing Intervention During Temporary Care

    Science.gov (United States)

    Curry, Judith B.

    1974-01-01

    The role of the professional nurse in asseviating or minimizing the separation anxiety and traumatic impact on families during temporary placement of a retarded child in a residential facility is seen in two case studies of girls 3 and 12 years of age. (Author/MC)

  10. Temporary risk identification in urolithiasis.

    Science.gov (United States)

    Marickar, Y M Fazil; Salim, Abiya

    2009-12-01

    We have been using a risk index calculation for urolithiasis, which included most of the identifiable factors promoting calculogenesis. However, it was observed that the frequency of a patient getting stone problem was not uniform in spite of similarity of the risk index in the permanent setting. Also, many of the risk indices could be changed by dietary or lifestyle modifications. The objective of this paper was to calculate the temporary risk index of a patient at the time of each visit and correlate with stone activity during such periods, so that appropriate advice could be given on drugs, diet and lifestyle changes. The temporary risk index score was based on four symptoms, namely pain (0, nil; 1, vague pain; 2, mild; 3, moderate; 4, severe; 5, excruciating), haematuria (0, nil; 1, turbid; 2, cloudy; 3, reddish; 4, occasional frank blood; 5, continuous frank blood), burning sensation (0, nil; 1, minimal; 2, moderate; 3, terminal severe; 4, occasional excruciating; 5, continuous excruciating), and dysuria (0, nil; 1, minimal; 2, moderate; 3, terminal severe; 4, occasional excruciating, 5, continuous excruciating), ultrasonography for back pressure (0, nil; 1, mild; 2, moderate; 3, severe kidney and ureter; 4, unilateral total; 5, bilateral total anuria) and eight urine deposit findings (0, nil; 1, +; 2, 2+; 3, 3+; 4, 4+; 5, plenty), red blood cells, pus cells, whewellite crystals, weddellite crystals, phosphate crystals, uric acid/ammonium urate crystals, crystal clumping and crystal aggregation making a total of 13 parameters. Each parameter was given values ranging from 0 to 5. The total score was calculated and chemotherapeutic regimes were decided base on the score, which varied from 0 to 65. Hundred randomly selected patients who had been visiting the stone clinic for a minimum of five occasions were included in the study. The total scores of temporary risk were correlated with the permanent clinical risk score mentioned earlier. The temporary risk of the

  11. Temporary Residences: a becoming project

    Directory of Open Access Journals (Sweden)

    Luisa Ingaramo

    2012-04-01

    Full Text Available Among the experimental actions fostered so far by the Compagnia di San Paolo through its Housing Program, committed in handling the complex and fragmented housing discomfort issue, the Temporary Dwellings initiative represents a unique and innovative experience, as it actually offers the chance to activate a proper managerial direction around and about the real estate development processes. In particular, the Temporary Dwellings action is marked by two key aspects: a structured co-planning vision and projects selected through a requests for proposal system. The process in the whole aims on the one hand at reaching an high transparent level of decision making , while, on the other hand, at developing a continuous and mutual monitoring and matching activity between the Housing Program and the group of cross-curricular experts teamed up in the project: technicians, designers, managers, psychologists, contractors, and the other local stakeholders.

  12. Large capacity temporary visual memory

    Science.gov (United States)

    Endress, Ansgar D.; Potter, Mary C.

    2014-01-01

    Visual working memory (WM) capacity is thought to be limited to three or four items. However, many cognitive activities seem to require larger temporary memory stores. Here, we provide evidence for a temporary memory store with much larger capacity than past WM capacity estimates. Further, based on previous WM research, we show that a single factor — proactive interference — is sufficient to bring capacity estimates down to the range of previous WM capacity estimates. Participants saw a rapid serial visual presentation (RSVP) of 5 to 21 pictures of familiar objects or words presented at rates of 4/s or 8/s, respectively, and thus too fast for strategies such as rehearsal. Recognition memory was tested with a single probe item. When new items were used on all trials, no fixed memory capacities were observed, with estimates of up to 9.1 retained pictures for 21-item lists, and up to 30.0 retained pictures for 100-item lists, and no clear upper bound to how many items could be retained. Further, memory items were not stored in a temporally stable form of memory, but decayed almost completely after a few minutes. In contrast, when, as in most WM experiments, a small set of items was reused across all trials, thus creating proactive interference among items, capacity remained in the range reported in previous WM experiments. These results show that humans have a large-capacity temporary memory store in the absence of proactive interference, and raise the question of whether temporary memory in everyday cognitive processing is severely limited as in WM experiments, or has the much larger capacity found in the present experiments. PMID:23937181

  13. Study design and rationale of the 'Balloon-Expandable Cobalt Chromium SCUBA Stent versus Self-Expandable COMPLETE-SE Nitinol Stent for the Atherosclerotic ILIAC Arterial Disease (SENS-ILIAC Trial) Trial': study protocol for a randomized controlled trial.

    Science.gov (United States)

    Choi, Woong Gil; Rha, Seung Woon; Choi, Cheol Ung; Kim, Eung Ju; Oh, Dong Joo; Cho, Yoon Hyung; Park, Sang Ho; Lee, Seung Jin; Hur, Ae Yong; Ko, Young Guk; Park, Sang Min; Kim, Ki Chang; Kim, Joo Han; Kim, Min Woong; Kim, Sang Min; Bae, Jang Ho; Bong, Jung Min; Kang, Won Yu; Seo, Jae Bin; Jung, Woo Yong; Cho, Jang Hyun; Kim, Do Hoi; Ahn, Ji Hoon; Kim, Soo Hyun; Jang, Ji Yong

    2016-06-25

    The self-expandable COMPLETE™ stent (Medtronic) has greater elasticity, allowing it to regain its shape after the compression force reduces, and has higher trackability, thus is easier to maneuver through tortuous vessels, whereas the balloon-expandable SCUBA™ stent (Medtronic) has higher radial stiffness and can afford more accurate placement without geographic miss, which is important in aortoiliac bifurcation lesions. To date, there have been no randomized control trials comparing efficacy and safety between the self-expanding stent and balloon-expandable stent in advanced atherosclerotic iliac artery disease. The purpose of our study is to examine primary patency (efficacy) and incidence of stent fracture and geographic miss (safety) between two different major representative stents, the self-expanding nitinol stent (COMPLETE-SE™) and the balloon-expanding cobalt-chromium stent (SCUBA™), in stenotic or occlusive iliac arterial lesions. This trial is designed as a prospective, randomized, multicenter trial to demonstrate a noninferiority of SCUBA™ stent to COMPLETE-SE™ stent following balloon angioplasty in iliac arterial lesions, and a total of 280 patients will be enrolled. The primary end point of this study is the rate of primary patency in the treated segment at 12 months after intervention as determined by catheter angiography, computed tomography angiography, or duplex ultrasound. The SENS-ILIAC trial will give powerful insight into whether the stent choice according to deployment mechanics would impact stent patency, geographic miss, or stent fracture in patients undergoing stent implantation in iliac artery lesions. National Institutes of Health Clinical Trials Registry (ClinicalTrials.gov identifier: NCT01834495 ), registration date: May 8, 2012.

  14. Endoscopic Insertion Of A Self-Expandable Stent Combined With Laparoscopic Rinsing Of Peritoneal Cavity As A Method For Staple Line Leaks Treatment In Patients Post Laparoscopic Sleeve Gastrectomy.

    Science.gov (United States)

    Matłok, Maciej; Major, Piotr; Pędziwiatr, Michał; Winiarski, Marek; Budzyński, Piotr; Małczak, Piotr; Hynnekleiv, Leif; Budzyński, Andrzej

    2015-05-01

    Currently, laparoscopic sleeve gastrectomy is one of bariatric surgeries most commonly performed in the world. The most frequent complications of surgeries of this type, with the highest mortality rate, include bleeding into the GI tract and peritoneal cavity, and sleeve staple line leaks. These severe complications prolong the hospital stay, and often are a cause of patient's death. While in a case of bleeding the procedure appears to be obvious, so far no uniform and standard guidelines have been established for the group of patients with staple line leaks. The aim of the study was to report results of treatment for staple line leaks following laparoscopic sleeve gastrectomy with a laparoscopic procedure and simultaneous endoscopic insertion of a self-expandable stent. 152 laparoscopic sleeve gastrectomies were performed from April 2009 to December 2014. The BMI median was 46.9, and the age median was 42 years. Staple line leaks developed in 3 out of 152 people (1.97%). All patients who developed this complication were included in the study. The treatment involved laparoscopic revision surgery with simultaneous endoscopic insertion of a self-expandable stent (Boston Scientific, Wallflex Easophageal Stent, 150×23 mm) into the gastric stump during gastroscopy. Leaks following laparoscopic sleeve gastrectomy were diagnosed on day 5 after the procedure, on average. Intervention consisting of laparoscopy and endoscopic insertion of a self-expandable stent was initiated within 14 hours of diagnosing the leak, on average. The mean time for which the stent was kept was 5 weeks (4-6 weeks). Stenting proved to be fully effective in all patients, where after discharging home, a cutaneous fistula, periodically (every 2-3 weeks) discharging several millilitres of matter, persisted in one patient. The mean time for the leak healing in 2 patients, in whom the described method was successful in treatment of this complication, was 37 days. No patient died in the perioperative or

  15. On the Sharing of Temporary Parental Leave

    DEFF Research Database (Denmark)

    Amilon, Anna

    2007-01-01

    This paper views temporary parental leave (leave from work to take care of a sick child) as a household public good, produced with time inputs of the parents as the only input. Assuming equal productivities in the production of temporary parental leave and equal utility functions of the spouses......-point of the female is found to push the intra household allocation of temporary parental leave towards greater sharing between the spouses. In addition, an increase in the insurance ceiling will further sharing of temporary parental leave in some families, while reducing it in others....

  16. 40 CFR 264.553 - Temporary Units (TU).

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 25 2010-07-01 2010-07-01 false Temporary Units (TU). 264.553 Section... Provisions for Cleanup § 264.553 Temporary Units (TU). (a) For temporary tanks and container storage areas... Administrator may designate a unit at the facility, as a temporary unit. A temporary unit must be located within...

  17. Lessons learnt from experimental temporary octopus fishing ...

    African Journals Online (AJOL)

    This paper presents evidence of the fisheries effect of experimental temporary fishing closures for Octopus in the then-emergent Velondriake Locally Managed Marine Area (LMMA) in south-west Madagascar during 2004–2006. We present an analysis of the O. cyanea catch data for the first two years of temporary closures ...

  18. Diversity patterns of temporary wetland macroinvertebrate ...

    African Journals Online (AJOL)

    Although macroinvertebrates are potentially useful for assessing the condition of temporary wetlands, little is yet known about them. Macroinvertebrate assemblages were assessed in 138 temporary wetlands in the south-western Cape, recording 126 taxa. However, predicted richness estimates were all higher than the ...

  19. Cost Efficacy of Metal Stents for Palliation of Extrahepatic Bile Duct Obstruction in a Randomized Controlled Trial

    NARCIS (Netherlands)

    Walter, Daisy; van Boeckel, Petra G A; Groenen, Marcel J; Weusten, Bas L A M; Witteman, Ben J; Tan, Gi; Brink, Menno A; Nicolai, Jan; Tan, Adriaan C; Alderliesten, Joyce; Venneman, Niels G; Laleman, Wim; Jansen, Jeroen M; Bodelier, Alexander; Wolters, Frank L; van der Waaij, Laurens A; Breumelhof, Ronald; Peters, Frank T M; Scheffer, Robbert C H; Leenders, Max; Hirdes, Meike M C; Steyerberg, Ewout W; Vleggaar, Frank P; Siersema, Peter D

    BACKGROUND & AIMS: Endoscopic stents are placed for palliation of extrahepatic bile duct obstruction. Although self-expandable metal stents (SEMS) remain patent longer than plastic stents, they are more expensive. We aimed to evaluate which type of stent (plastic, uncovered SEMS [uSEMS], or

  20. After the sunset: the residual effect of temporary legislation

    NARCIS (Netherlands)

    F.J. Fagan (Frank)

    2013-01-01

    textabstractThe difference between permanent legislation and temporary legislation is the default rule of termination: permanent legislation governs perpetually, while temporary legislation governs for a limited time. Recent literature on legislative timing rules considers the effect of temporary

  1. 75 FR 53985 - Arizona Public Service Company, et al., Palo Verde Nuclear Generating Station, Unit 3; Temporary...

    Science.gov (United States)

    2010-09-02

    ... release, hydrogen concentration, and cladding oxidation from the metal- water reaction. The temporary...\\TM\\. The underlying purpose of 10 CFR part 50, Appendix K, Section I.A.5, ``Metal-Water Reaction Rate..., regulations, and orders of the Nuclear Regulatory Commission (NRC, the Commission) now or hereafter in effect...

  2. Temporary closure of the tunnel

    CERN Multimedia

    Relations with the Host States Service

    2005-01-01

    Owing to major maintenance work, the tunnel linking the various parts of the CERN site will be closed from Monday 4 July to Sunday 24 July 2005 The Host State authorities have given authorisation for persons employed by CERN or the Institutes to travel and for goods belonging to these entities to be transported between the various parts of the site via Gate E (Charles de Gaulle) while this work is being carried out, subject to strict compliance with the Rules for the Use of the Tunnel (see http://dsu.web.cern.ch/dsu/dsum/hsr/DOCUMENTS/8200980415.pdf). Gate E will thus be open between 7.00 a.m. and 7.00 p.m. from Monday to Friday during the period concerned. The rules governing the use of Gate E to enter the Meyrin site between 7.30 a.m. and 9.00 a.m. or to leave the site between 5.00 p.m. and 6.30 p.m. (see http://dsu.web.cern.ch/dsu/dsum/hsr/DOCUMENTS/12222_041027.pdf)) will remain unaffected by this temporary authorisation. Relations with the Host States Service and TS-FM Group

  3. The self-expanding Symetis Acurate does not increase cerebral microembolic load when compared to the balloon-expandable Edwards Sapien prosthesis: a transcranial Doppler study in patients undergoing transapical aortic valve implantation.

    Directory of Open Access Journals (Sweden)

    Gabor Erdoes

    Full Text Available OBJECTIVES: The aim of this study was to quantify potential differences in count, frequency and pattern of high-intensity transient signals (HITS during transapical transcatheter aortic valve implantation (TA-TAVI, by comparing the Symetis Acurate TA (SA with the balloon-expandable Edwards Sapien XT (ES system. BACKGROUND: Recently, the Symetis Acurate TA revalving system has been introduced for TA-TAVI. The Symetis Acurate TA aortic bioprosthesis is self-expanding and is deployed by a specific two-step implantation technique. Whether this novel method increases the load of intraprocedural emboli, detected by transcranial Doppler ultrasound (TCD as HITS, or not is not clear. METHODS: Twenty-two patients (n = 11 in each study arm, median logistic EuroScore 20%, median STS score 7% displayed continuous TCD signals of good quality throughout the entire TA-TAVI procedure and were included in the final analysis. Data are presented as median with interquartile ranges. RESULTS: No significant differences were detected in total procedural or interval-related HITS load (SA: 303 [200; 594], ES: 499 [285; 941]; p = 0.16. With both devices, HITS peaked during prosthesis deployment (PD, whereas significantly fewer HITS occurred during instrumentation (SA: p = 0.002; ES: < 0.001 or post-implantation PI (SA: p = 0.007; ES: < 0.001. PD-associated HITS amounted to almost half of the total HITS load. One patient suffered new disabling stroke at 30 days. Thirty-day mortality amounted to 13.6% (3 of 22 patients. CONCLUSIONS: Simplified transapical delivery using the self-expanding SA device does not increase HITS, despite of a two-step deployment technique with more interactions with the native aortic valve, when compared to the balloon-expandable ES valve. The similarity in HITS count, frequency and pattern with the two systems suggests a common mechanism for the release of cerebral microemboli.

  4. The self-expanding Symetis Acurate does not increase cerebral microembolic load when compared to the balloon-expandable Edwards Sapien prosthesis: a transcranial Doppler study in patients undergoing transapical aortic valve implantation.

    Science.gov (United States)

    Erdoes, Gabor; Huber, Christoph; Basciani, Reto; Stortecky, Stefan; Windecker, Stephan; Wenaweser, Peter; Carrel, Thierry; Eberle, Balthasar

    2014-01-01

    The aim of this study was to quantify potential differences in count, frequency and pattern of high-intensity transient signals (HITS) during transapical transcatheter aortic valve implantation (TA-TAVI), by comparing the Symetis Acurate TA (SA) with the balloon-expandable Edwards Sapien XT (ES) system. Recently, the Symetis Acurate TA revalving system has been introduced for TA-TAVI. The Symetis Acurate TA aortic bioprosthesis is self-expanding and is deployed by a specific two-step implantation technique. Whether this novel method increases the load of intraprocedural emboli, detected by transcranial Doppler ultrasound (TCD) as HITS, or not is not clear. Twenty-two patients (n = 11 in each study arm, median logistic EuroScore 20%, median STS score 7%) displayed continuous TCD signals of good quality throughout the entire TA-TAVI procedure and were included in the final analysis. Data are presented as median with interquartile ranges. No significant differences were detected in total procedural or interval-related HITS load (SA: 303 [200; 594], ES: 499 [285; 941]; p = 0.16). With both devices, HITS peaked during prosthesis deployment (PD), whereas significantly fewer HITS occurred during instrumentation (SA: p = 0.002; ES: < 0.001) or post-implantation PI (SA: p = 0.007; ES: < 0.001). PD-associated HITS amounted to almost half of the total HITS load. One patient suffered new disabling stroke at 30 days. Thirty-day mortality amounted to 13.6% (3 of 22 patients). Simplified transapical delivery using the self-expanding SA device does not increase HITS, despite of a two-step deployment technique with more interactions with the native aortic valve, when compared to the balloon-expandable ES valve. The similarity in HITS count, frequency and pattern with the two systems suggests a common mechanism for the release of cerebral microemboli.

  5. Efficacy of a Self-expanding Tract Sealant Device in the Reduction of Pneumothorax and Chest Tube Placement Rates After Percutaneous Lung Biopsy: A Matched Controlled Study Using Propensity Score Analysis

    Energy Technology Data Exchange (ETDEWEB)

    Ahrar, Judy U., E-mail: judy.ahrar@mdanderson.org; Gupta, Sanjay [The University of Texas M.D. Anderson Cancer Center, Department of Interventional Radiology (United States); Ensor, Joe E. [Houston Methodist Research Institute, The Houston Methodist Cancer Center (United States); Mahvash, Armeen; Sabir, Sharjeel H.; Steele, Joseph R.; McRae, Stephen E.; Avritscher, Rony; Huang, Steven Y.; Odisio, Bruno C.; Murthy, Ravi; Ahrar, Kamran; Wallace, Michael J.; Tam, Alda L. [The University of Texas M.D. Anderson Cancer Center, Department of Interventional Radiology (United States)

    2017-02-15

    PurposeTo evaluate the use of a self-expanding tract sealant device (BioSentry™) on the rates of pneumothorax and chest tube insertion after percutaneous lung biopsy.Materials and MethodsIn this retrospective study, we compared 318 patients who received BioSentry™ during percutaneous lung biopsy (treated group) with 1956 patients who did not (control group). Patient-, lesion-, and procedure-specific variables, and pneumothorax and chest tube insertion rates were recorded. To adjust for potential selection bias, patients in the treated group were matched 1:1 to patients in the control group using propensity score matching based on the above-mentioned variables. Patients were considered a match if the absolute difference in their propensity scores was ≤equal to 0.02.ResultsBefore matching, the pneumothorax and chest tube rates were 24.5 and 13.1% in the control group, and 21.1 and 8.5% in the treated group, respectively. Using propensity scores, a match was found for 317 patients in the treatment group. Chi-square contingency matched pair analysis showed the treated group had significantly lower pneumothorax (20.8 vs. 32.8%; p = 0.001) and chest tube (8.2 vs. 20.8%; p < 0.0001) rates compared to the control group. Sub-analysis including only faculty who had >30 cases of both treatment and control cases demonstrated similar findings: the treated group had significantly lower pneumothorax (17.6 vs. 30.2%; p = 0.002) and chest tube (7.2 vs. 18%; p = 0.001) rates.ConclusionsThe self-expanding tract sealant device significantly reduced the pneumothorax rate, and more importantly, the chest tube placement rate after percutaneous lung biopsy.

  6. PC based temporary shielding administrative procedure (TSAP)

    Energy Technology Data Exchange (ETDEWEB)

    Olsen, D.E.; Pederson, G.E. [Sargent & Lundy, Chicago, IL (United States); Hamby, P.N. [Commonwealth Edison Co., Downers Grove, IL (United States)

    1995-03-01

    A completely new Administrative Procedure for temporary shielding was developed for use at Commonwealth Edison`s six nuclear stations. This procedure promotes the use of shielding, and addresses industry requirements for the use and control of temporary shielding. The importance of an effective procedure has increased since more temporary shielding is being used as ALARA goals become more ambitious. To help implement the administrative procedure, a personal computer software program was written to incorporate the procedural requirements. This software incorporates the useability of a Windows graphical user interface with extensive help and database features. This combination of a comprehensive administrative procedure and user friendly software promotes the effective use and management of temporary shielding while ensuring that industry requirements are met.

  7. Temporary Authorizations at Permitted Waste Management Facilities

    Science.gov (United States)

    This rule under the Code of Federal Regulations (CFR) provides EPA with the authority to grant a permittee temporary authorization, without prior public notice and comment, to conduct activities necessary to respond promptly to changing conditions.

  8. Estimation of temporary emigration in male toads.

    Science.gov (United States)

    Muths, Erin; Scherer, Rick D; Corn, Paul Stephen; Lambert, Brad A

    2006-04-01

    Male boreal toads (Bufo boreas) are thought to return to the breeding site every year but, if absent in a particular year, will be more likely to return the following year. Using Pollock's robust design we estimated temporary emigration (the probability a male toad is absent from a breeding site in a given year) at three locations in Colorado, USA: two in Rocky Mountain National Park and one in Chaffee County. We present data that suggest that not all male toads return to the breeding site every year. Our analyses indicate that temporary emigration varies by site and time (for example, from 1992 to 1998, the probability of temporary emigration ranged from 10% to 29% and from 3% to 95% at Lost Lake and Kettle Tarn, respectively). Although the results provide weak evidence that males are more likely to return after a year's hiatus, a general pattern of state-dependent temporary emigration was not supported. We also hypothesized relationships between temporary emigration and a number of weather variables. While some competitive models included weather covariates, imprecise and variable estimates of the effects of these covariates precluded fully defining their impact on temporary emigration.

  9. A novel lumen-apposing metal stent for endoscopic ultrasound-guided drainage of pancreatic fluid collections : a prospective cohort study

    NARCIS (Netherlands)

    Walter, Daisy; Will, Uwe; Sanchez-Yague, Andres; Brenke, Dirk; Hampe, Jochen; Wollny, Helge; López-Jamar, Jose Miguel Esteban; Jechart, Gertrud; Vilmann, Peter; Gornals, Joan B; Ullrich, Sebastian; Fähndrich, Martin; de Tejada, Alberto Herreros; Junquera, Félix; Gonzalez-Huix, Ferran; Siersema, Peter D; Vleggaar, FP

    BACKGROUND AND STUDY AIMS: A novel large-diameter, lumen-apposing, self-expanding metal stent with bilateral flanges was recently developed for endoscopic ultrasound (EUS)-guided transmural drainage of symptomatic pancreatic fluid collections (PFCs). The aim of this study was to evaluate the

  10. Defining chemical status of a temporary Mediterranean River.

    Science.gov (United States)

    Skoulikidis, Nikolaos Th

    2008-07-01

    Although the majority of rivers and streams in the Mediterranean area are temporary, no particular attention is being paid for such systems in the Water Framework Directive (WFD). A typical temporal Mediterranean river, draining an intensively cultivated basin, was assessed for its chemical status. Elevated concentrations of nitrates and salts in river water as well as nutrients and heavy metals in river sediments have been attributed to agricultural land uses and practices and point sources of organic pollution. A scheme for the classification of the river's chemical status (within the ecological quality classification procedure) was applied by combining pollution parameters in groups according to related pressures. In light of the temporal hydrological regime and anthropogenic impacts, sediment chemical quality elements were considered, in addition to hydrochemical ones. Despite the extensive agricultural activities in the basin, the majority of the sites examined showed a good quality and only three of them were classified as moderate. For the classification of the chemical quality of temporary water bodies, there is a need to develop ecologically relevant salinity and sediment quality standards.

  11. Self-expanding nitinol stents of high versus low chronic outward force in de novo femoropopliteal occlusive arterial lesions (BIOFLEX-COF trial): study protocol for a randomized controlled trial.

    Science.gov (United States)

    Wressnegger, Alexander; Kaider, Alexandra; Funovics, Martin A

    2017-12-14

    Self-expanding nitinol stents must be oversized at least by a minimal amount to ensure contact with the vessel wall and prevent migration. Once the stent is deployed it exerts a continuous force upon the vascular wall, termed chronic outward force (COF). Animal studies have found an increased neointimal hyperplasia in stents with high oversizing and thus high COF. Data about correlation between COF and neointimal hyperplasia in humans are currently lacking. The objective of the BIOFLEX-COF trial is to prospectively investigate differences in formation of intimal hyperplasia at 1 and 2 years after implantation of nitinol stents with high versus low COF in de novo femoropopliteal occlusive arterial lesions. The BIOFLEX-COF trial is a prospective, quantitative, randomized study. Eighty subjects with symptomatic peripheral arterial lesions eligible for endovascular stent implantation will be enrolled and randomly assigned to either a high COF group (LifeStent Flexstar, Bard Peripheral Vascular Inc., Tempe, AZ, USA) or low COF group (Pulsar, Biotronik AG, Bülach, Switzerland) using an online randomization program to generate a random 1:1 group allocation (block randomization). After implantation and dilatation, COF at every 2 mm along the stent axis will be calculated from the actual stent diameter versus its nominal diameter. There will be two follow-up evaluations at 12 and 24 months. Primary endpoint is the amount of in-stent neointima at 1 year, assessed by contrast-enhanced CT angiography (CTA). In the control examinations, stent diameter and true lumen diameter will be measured on DICOM images every 2 mm along the stent axis to quantify the relative amount of in-stent restenosis. Secondary objectives are the amount of in-stent neointima at 2 years, device- and procedure-related adverse events and target lesion revascularization (TLR) rate. The scheduled time for recruitment is 2 years. Recruitment is expected to be complete in October 2017. This trial is the

  12. Need for adaptation: transformation of temporary houses.

    Science.gov (United States)

    Wagemann, Elizabeth

    2017-10-01

    Building permanent accommodation after a disaster takes time for reasons including the removal of debris, the lack of available land, and the procurement of resources. In the period in-between, affected communities find shelter in different ways. Temporary houses or transitional shelters are used when families cannot return to their pre-disaster homes and no other alternative can be provided. In practice, families stay in a standard interim solution for months or even years while trying to return to their routines. Consequently, they adapt their houses to meet their midterm needs. This study analysed temporary houses in Chile and Peru to illustrate how families modify them with or without external support. The paper underlines that guidance must be given on how to alter them safely and on how to incorporate the temporary solution into the permanent structure, because families adapt their houses whether or not they are so designed. © 2017 The Author(s). Disasters © Overseas Development Institute, 2017.

  13. Radioactive metallic stent for the treatment of esophageal cancer in animal model and clinical trial

    Energy Technology Data Exchange (ETDEWEB)

    Park, K. B. [Korea Atomic Energy Research Institute, Taejeon (Korea); Lee, J. D. [Yonsei Univ., Seoul (Korea)

    2000-03-01

    The purpose of this study is to evaluate tissue response of self-expandable metallic stent covered Ho-166 in normal canine esophagus. Ho-166 was incorporated within polyurethan and covered over the outer surface of self-expandable metallic stents(diameter ; 18mm, length ; 40mm). Metallic stents with radioactivity of 4.0-7.8mCi (Group A), 1.0-1.8mCi (Group B) and 0.5-0.7mCi (Group C) were placed in normal mid-esophagus in twelve dogs (Group A), five (Group B) and another five dogs (Group C) respectively. Estimated radiation dose was 200-392Gy in Group A, 50-90Gy in Group B, and 25-35 Gy in Group C. The dogs were sacrified at two or three months later. In group A, mid-esophagus stricture, mucosal ulceration were found. Sereve fibrosis and degeneration of muscular propria, outer one half were found in three and complete fibrosis of esophageal wall in seven and fibrosis of esophageal wall and periesophageal soft tissue in two. In group B, glandular atrophy and submucosal fibrosis were found but muscular layer was intact. In group C, no histological change was demonstrated in three but submucosal inflammation and glandular atrophy with intact mucosa in two. Self-expandable metallic stent covered with Ho-166 may be used safely in esophagus without complication. 21 refs., 17 figs., 2 tabs. (Author)

  14. Closing a temporary ileostomy within two weeks.

    Science.gov (United States)

    Hindenburg, Tommy; Rosenberg, Jacob

    2010-06-01

    Temporary ileostomy is frequently constructed to relieve a rectal anastomosis and avoid peritonitis if the anastomosis is leaking. Ostomy is a burden for both the patient and society and early closure is therefore desirable to counteract increased morbidity. Several prospective studies and a single randomized controlled trial have shown that closure in less than two weeks was associated with lower or equal morbidity compared with later closure. Thus, current data support early closure of temporary ileostomy performed to cover rectal anastomosis in routine clinical practice.

  15. Nurses' perceptions of temporary nursing service agencies.

    Science.gov (United States)

    Sorrentino, E A; Simunek, L A

    1991-04-01

    Temporary staffing agencies have indeed carved out a role for themselves, and our free enterprise system lends itself to the perpetuation of the entrepreneurial spirit in all: nurses, agencies, and hospitals alike. It is wiser to learn to work with current structure realizing that supply and demand plays an important role in the survival and success of agencies. Although there are problems associated with temporary nursing staffing, they are surmountable. Orientation programs, performance monitoring, ensuring accountability of both nurse and agency are but a few that can enhance utilization and quality of service.

  16. Prótesis endoluminal autoexpandible en una oclusión aguda por tumor del colon izquierdo Self-expanding endoluminal prosthesis in an acute occlusion due to left colon tumor

    Directory of Open Access Journals (Sweden)

    Manuel Cepero Valdés

    2011-06-01

    Full Text Available Se describe la utilización endoscópica de prótesis autoexpandibles en dos pacientes con oclusión mecánica aguda del colon izquierdo, tratados en el servicio de urgencias, lo que permitió mejorar el estado hidroelectrolítico y sintomático de los pacientes, así como la preparación del colon. Esto último evitó una cirugía de urgencia y colostomía descompresiva, y la intervención quirúrgica se programó para los 5 posteriores. No hubo complicaciones posoperatorias. El resultado anatomopatológico confirmó sendos adenocarcinomas de colon en anillo de sellos, en un paciente en el colon descendente y en el otro en el colon sigmoides.Endoscopic use of self-expanding prostheses is described in two patients with acute mechanical occlusion of left colon, treated in the emergence service of our center allowing us to improve the hydroelectric symptomatic status of patients, as well as the colon preparation. This latter avoided an emergence surgery and decompression colostomy; surgery was programmed for the subsequent five ones. Anatomical-pathological results confirmed the presence of large seal-ring colon's adenocarcinomas in the descendent colon in a patient, and in the sigmoid colon in another one.

  17. Rationale and design of the Edwards SAPIEN-3 periprosthetic leakage evaluation versus Medtronic CoreValve in transfemoral aortic valve implantation (ELECT) trial : A randomised comparison of balloon-expandable versus self-expanding transcatheter aortic valve prostheses.

    Science.gov (United States)

    Abawi, M; Agostoni, P; Kooistra, N H M; Samim, M; Nijhoff, F; Voskuil, M; Nathoe, H; Doevendans, P A; Chamuleau, S A; Urgel, K; Hendrikse, J; Leiner, T; Abrahams, A C; van der Worp, B; Stella, P R

    2017-05-01

    Periprosthetic aortic regurgitation (PPR) after transcatheter aortic valve implantation (TAVI) remains an important issue associated with impaired long-term outcomes. The current randomised study aims to evaluate potential differences between the balloon-expandable Edwards SAPIEN-3 and the self-expanding Medtronic CoreValve system with the main focus on post-TAVI PPR by means of novel imaging endpoints, and an additional focus on other clinical endpoints. The primary endpoint of this study is quantitative assessment of the severity of post-procedural PPR using cardiac magnetic resonance imaging. Several other novel imaging modalities (X-ray contrast angiography, echocardiography) are used as secondary imaging modalities for the assessment of PPR following TAVI. Secondary objectives of the study include clinical outcomes such as cerebral and kidney injury related to TAVI, and quality of life. The ELECT study is a single-centre, prospective, two-armed randomised controlled trial. For the purpose of this study, 108 consecutive adult patients suitable for transfemoral TAVI will be randomly allocated to receive the SAPIEN-3 (n = 54) or the CoreValve system (n = 54). The ELECT trial is the first randomised controlled trial to quantitatively compare the extent of post-TAVI PPR between the SAPIEN-3 and CoreValve. Furthermore, it will evaluate potential differences between the two prostheses with regard to mid-term clinical outcome and quality of life.

  18. EUS-guided drainage of pancreatic fluid collections using a novel lumen-apposing metal stent on an electrocautery-enhanced delivery system : a large retrospective study (with video)

    NARCIS (Netherlands)

    Rinninella, Emanuele; Kunda, Rastislav; Dollhopf, Markus; Sanchez-Yague, Andres; Will, Uwe; Tarantino, Ilaria; Gornals Soler, Joan; Ullrich, Sebastian; Meining, Alexander; Esteban, Josè Miguel; Enz, Thomas; Vanbiervliet, Geoffroy; Vleggaar, FP; Attili, Fabia; Larghi, Alberto

    2015-01-01

    BACKGROUND AND AIMS: A lumen-apposing, self-expanding metal stent incorporated in an electrocautery-enhanced delivery system for EUS-guided drainage of pancreatic fluid collections (PFCs) recently has become available. The aim of this study was to analyze the safety and clinical effectiveness of

  19. 7 CFR 205.290 - Temporary variances.

    Science.gov (United States)

    2010-01-01

    ... 7 Agriculture 3 2010-01-01 2010-01-01 false Temporary variances. 205.290 Section 205.290 Agriculture Regulations of the Department of Agriculture (Continued) AGRICULTURAL MARKETING SERVICE (Standards, Inspections, Marketing Practices), DEPARTMENT OF AGRICULTURE (CONTINUED) ORGANIC FOODS PRODUCTION ACT PROVISIONS NATIONAL ORGANIC PROGRAM Organic...

  20. Temporary Tattoos and Henna/Mehndi

    Science.gov (United States)

    ... For example, we can issue Import Alerts and Warning Letters. An Import Alert allows FDA to detain products that violate or ... Awareness of Safety: FDA Webinar, May 13, 2014 Warning Letter Issued to Black Henna Ink, Inc. Import Alert #53-14: Intensified Coverage of Temporary Tattoos Containing ...

  1. Closing a temporary ileostomy within two weeks

    DEFF Research Database (Denmark)

    Hindenburg, Tommy; Rosenberg, J.

    2010-01-01

    Temporary ileostomy is frequently constructed to relieve a rectal anastomosis and avoid peritonitis if the anastomosis is leaking. Ostomy is a burden for both the patient and society and early closure is therefore desirable to counteract increased morbidity. Several prospective studies and a sing...

  2. Temporary tattoos: a novel OSCE assessment tool.

    Science.gov (United States)

    Gormley, Gerry; Menary, Allison; Layard, Brooke; Hart, Nigel; McCourt, Collette

    2013-08-01

    There are many issues regarding the use of real patients in objective structured clinical examinations (OSCEs). In dermatology OSCE stations, standardised patients (SPs) with clinical photographs are often used. Temporary transfer tattoos can potentially simulate skin lesions when applied to an SP. This study aims to appraise the use of temporary malignant melanoma tattoos within an OSCE framework. Within an 11-station OSCE, a temporary malignant melanoma tattoo was developed and applied to SPs in a 'skin lesion' OSCE station. A questionnaire captured the opinions of the candidate, SP and examiners, and the degree of perceived realism of each station was determined. Standard post hoc OSCE analysis determined the psychometric reliability of the stations. The response rates were 95.9 per cent of candidates and 100 per cent of the examiners and SPs. The 'skin lesion' station achieved the highest realism score compared with other stations: 89.0 per cent of candidates felt that the skin lesion appeared realistic; only 28 per cent of candidates had ever seen a melanoma before in training. The psychometric performance of the melanoma station was comparable with, and in many instances better than, other OSCE stations. Transfer tattoo technology facilitates a realistic dermatology OSCE station encounter. Temporary tattoos, alongside trained SPs, provide an authentic, standardised and reliable experience, allowing the assessment of integrated dermatology clinical skills. © 2013 John Wiley & Sons Ltd.

  3. Closing a temporary ileostomy within two weeks

    DEFF Research Database (Denmark)

    Hindenburg, Tommy; Rosenberg, J.

    2010-01-01

    Temporary ileostomy is frequently constructed to relieve a rectal anastomosis and avoid peritonitis if the anastomosis is leaking. Ostomy is a burden for both the patient and society and early closure is therefore desirable to counteract increased morbidity. Several prospective studies and a single...

  4. 40 CFR 180.31 - Temporary tolerances.

    Science.gov (United States)

    2010-07-01

    ... 40 Protection of Environment 23 2010-07-01 2010-07-01 false Temporary tolerances. 180.31 Section 180.31 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PESTICIDE PROGRAMS... period designed to allow the orderly marketing of the raw agricultural commodities produced while testing...

  5. Temporary Chinese Migration to Madagascar: Local Perceptions ...

    African Journals Online (AJOL)

    This article fills a knowledge-gap in the literature on China in Africa by exploring local perceptions of temporary Chinese migrants in Madagascar, the growth of small-scale Chinese-owned import and retail businesses in the capital, and their impacts on Malagasy producers, utilizing the country's blanket and paper industries ...

  6. Temporary Chinese Migration to Madagascar: Local Perceptions ...

    African Journals Online (AJOL)

    However, as public debate over their impact in Madagascar intensifies, the temporary Chinese migrant ... economic and political engagement of the continent. Following the .... all focus on either the earlier waves of migration or on the relations between the resident Chinese community and the new migrants. Notable ...

  7. 47 CFR 74.537 - Temporary authorizations.

    Science.gov (United States)

    2010-10-01

    ... 47 Telecommunication 4 2010-10-01 2010-10-01 false Temporary authorizations. 74.537 Section 74.537 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) BROADCAST RADIO SERVICES EXPERIMENTAL RADIO.... However, in the case of events of widespread interest and importance which cannot be transmitted...

  8. 47 CFR 74.633 - Temporary authorizations.

    Science.gov (United States)

    2010-10-01

    ... 47 Telecommunication 4 2010-10-01 2010-10-01 false Temporary authorizations. 74.633 Section 74.633 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) BROADCAST RADIO SERVICES EXPERIMENTAL RADIO... wide-spread interest and importance which cannot be transmitted successfully on these frequencies...

  9. 47 CFR 74.833 - Temporary authorizations.

    Science.gov (United States)

    2010-10-01

    ... 47 Telecommunication 4 2010-10-01 2010-10-01 false Temporary authorizations. 74.833 Section 74.833 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) BROADCAST RADIO SERVICES EXPERIMENTAL RADIO... interest and importance which cannot be transmitted successfully on these frequencies, frequencies assigned...

  10. 47 CFR 74.433 - Temporary authorizations.

    Science.gov (United States)

    2010-10-01

    ... 47 Telecommunication 4 2010-10-01 2010-10-01 false Temporary authorizations. 74.433 Section 74.433 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) BROADCAST RADIO SERVICES EXPERIMENTAL RADIO... of events of wide-spread interest and importance which cannot be transmitted successfully on these...

  11. Branded prescription drug fee. Final regulations, temporary regulations, and removal of temporary regulations.

    Science.gov (United States)

    2014-07-28

    This document contains final regulations that provide guidance on the annual fee imposed on covered entities engaged in the business of manufacturing or importing branded prescription drugs. This fee was enacted by section 9008 of the Patient Protection and Affordable Care Act, as amended by section 1404 of the Health Care and Education Reconciliation Act of 2010. This document also withdraws the Branded Prescription Drug Fee temporary regulations and contains new temporary regulations regarding the definition of controlled group that apply beginning on January 1, 2015. The final regulations and the new temporary regulations affect persons engaged in the business of manufacturing or importing certain branded prescription drugs. The text of the temporary regulations in this document also serves as the text of proposed regulations set forth in a notice of proposed rulemaking (REG-123286-14) on this subject in the Proposed Rules section in this issue of the Federal Register.

  12. Temporary Employment and Perceived Employability: Mediation by Impression Management

    Science.gov (United States)

    De Cuyper, Nele; De Witte, Hans

    2010-01-01

    Perceived employability (PE) has been advanced as the upcoming resource for career development, particularly for temporary workers. The question is how temporary workers become employable. Our hypothesis is that temporary workers more than permanent workers use impression management to become employable, both on the internal and the external labor…

  13. 30 CFR 47.44 - Temporary, portable containers.

    Science.gov (United States)

    2010-07-01

    ... 30 Mineral Resources 1 2010-07-01 2010-07-01 false Temporary, portable containers. 47.44 Section... TRAINING HAZARD COMMUNICATION (HazCom) Container Labels and Other Forms of Warning § 47.44 Temporary, portable containers. (a) The operator does not have to label a temporary, portable container if he or she...

  14. 21 CFR 872.3770 - Temporary crown and bridge resin.

    Science.gov (United States)

    2010-04-01

    ... 21 Food and Drugs 8 2010-04-01 2010-04-01 false Temporary crown and bridge resin. 872.3770 Section... (CONTINUED) MEDICAL DEVICES DENTAL DEVICES Prosthetic Devices § 872.3770 Temporary crown and bridge resin. (a) Identification. A temporary crown and bridge resin is a device composed of a material, such as...

  15. 77 FR 71825 - Notice of Temporary Restriction of Vehicle Use and Temporary Closure to Tree Cutting and Wood...

    Science.gov (United States)

    2012-12-04

    ...: 14X1125] Notice of Temporary Restriction of Vehicle Use and Temporary Closure to Tree Cutting and Wood... harvesting and/or tree cutting on public land within the Topaz Ranch Estates (TRE) and Preacher fires burn... and a temporary closure to tree cutting and wood collecting on areas burned by the TRE and Preacher...

  16. Comparison of self-expanding stents with distal embolic protection to balloon-expandable stents without a protection device in the treatment of symptomatic vertebral artery origin stenosis: a prospective randomized trial.

    Science.gov (United States)

    Geng, Xiaokun; Hussain, Mohammed; Du, Huishan; Zhao, Liang; Chen, Jian; Su, Wei; Ma, Linlin; Gao, Zongen; Ding, Yuchuan; Ji, Xunming

    2015-06-01

    To compare the angiographic and clinical outcomes of self-expanding stents (SES) with distal embolic protection devices (EPD) vs balloon-expandable stents (BES) without EPD in the treatment of symptomatic atherosclerotic vertebral artery ostial stenosis (VAOS). Between July 2011 and March 2013, a prospective randomized trial was conducted involving 127 patients (mean age 67.3±10.2 years; 94 men) with symptomatic VAOS randomly assigned to treatment with SES + EPD (Precise RX or RX Acculink stent + Spider FX EPD; n=61) or BES (Palmaz Blue or Resolute RX; n=66) without EPD. In-stent restenosis (ISR) >50% detected by duplex ultrasound was the primary endpoint. Technical success, clinical success, complications within 30 days, and signal intensity abnormalities on diffusion weighted imaging (DWI) after stenting were compared. The 30-day technical success rate was 95.5% (63/66) for SES+EPD vs 100% (70/70) for BES without EPD (p=0.072). DWI at 24 hours poststenting showed 2 hyperintense lesions in 2 (3.3%) SES + EPD cases and 15 hyperintense lesions in 13 (18.6%) BES patients (pEPD group vs 85.7% (60/70) for the BES group (p=0.115). The ISR was seen in 16/70 (22.9%) arteries in the BES group and 2/66 (3.1%) arteries in SES + EPD group (pEPD group (pEPD in the treatment of symptomatic VAOS is technically feasible and safe, with low rates of ISR and significantly reduced thromboembolic events on imaging when compared to BES without EPD. © The Author(s) 2015.

  17. Empirical correlation methods for temporary anions.

    Science.gov (United States)

    Sommerfeld, Thomas; Weber, Rebecca J

    2011-06-23

    A temporary anion is a short-lived radical anion that decays through electron autodetachment into a neutral molecule and a free electron. The energies of these metastable species are often predicted using empirical correlation methods because ab initio predictions are computationally very expensive. Empirical correlation methods can be justified in the framework of Weisskopf-Fano-Feshbach theory but tend to work well only within closely related families of molecules or within a restricted energy range. The reason for this behavior can be understood using an alternative theoretical justification in the framework of the Hazi-Taylor stabilization method, which suggests that the empirical parameters do not so much correct for the coupling of the computed state to the continuum but for electron correlation effects and that therefore empirical correlation methods can be improved by using more accurate electronic structure methods to compute the energy of the confined electron. This idea is tested by choosing a heterogeneous reference set of temporary states and comparing empirical correlation schemes based on Hartree-Fock orbital energies, Kohn-Sham orbital energies, and attachment energies computed with the equation-of-motion coupled-cluster method. The results show that using more reliable energies for the confined electron indeed enhances the predictive power of empirical correlation schemes and that useful correlations can be established beyond closely related families of molecules. Certain types of σ* states are still problematic, and the reasons for this behavior are analyzed. On the other hand, preliminary results suggest that the new scheme can even be useful for predicting energies of bound anions at a fraction of the computational cost of reliable ab initio calculations. It is then used to make predictions for bound and temporary states of the furantrione and croconic acid radical anions.

  18. Tratamento das afecções da aorta com a primeira geração de stents auto-expansíveis Aortic diseases treatment with a first generation of self expanding stent-grafts

    Directory of Open Access Journals (Sweden)

    Wagner Michael PEREIRA

    2001-09-01

    ,57%, com 70,15% dos pacientes livre de eventos em 33 meses de seguimento, tornando o método factível e diminuindo a mortalidade no tratamento cirúrgico das dissecções agudas e crônicas do tipo B.INTRODUCTION: The authors describe the implantation of an endovascular self-expanding stents grafts at 33 months of follow-up. The use can be a new alternative for the treatment of descending aortic dissections and aneurysms disease. MATERIAL AND METHODS: From April 1998 to November 2000 (32 months, 37 endovascular stent grafts were implanted, 21 in acute dissections type B, 7 in acute dissections type A and 9 in chronic dissections type B and aneurysms ones. The age varied between 39 and 79 years (mean=57.94 ± 1.91 years, considering that 64.86% were male patients. The patients were submitted to median esternotomy, extracorporeal circulation (ECC, with deep hipothermia (18-20ºC, total circulatory arrest (TCA, and retrograde cerebral perfusion (RCP. The transverse aorta was incised and the stent was implanted in the descending proximal aorta with the aid sometimes of aortoscopy. The times of ECC, aortic clamping, TCA, RCP, rewarming, mechanic ventilation, hospitalization, trans and post-operative bleeding, blood replacement, events curve and survival curve were analyzed. RESULTS: The hospital mortality (30 days was 13.51%; 32 have been followed up from 1 to 33 months, 70.7% are free of events and survival curve with 63.19% (33 months. CONCLUSIONS: The implant of self-expanding intraluminal stent grafts presented has lower hospital mortality in the acute phase and follow-up in acute aortic dissections type B (10% than clinical treatment (IRAD. In spite of the small sample the procedure is promising and needs longer follow-up.

  19. Temporary new opening hours for Gate C

    CERN Multimedia

    GS Department

    2010-01-01

    Please note the new temporary opening hours for the gate C as from 22 September 2010 until 29 October 2010 (working days): Morning: between 7:00 a.m. and 9:00 a.m. Lunch: between 12:00 and 2:00 p.m. Evening: between 5:00 pm and 7:00 p.m. Traffic flow will be permitted in both directions during this period. Please minimize your speed accordingly and respect all road signs. GS-SEM Group General Infrastructure Services Department

  20. Criteria for diagnosis of temporary gluten intolerance.

    Science.gov (United States)

    McNeish, A S; Rolles, C J; Arthur, L J

    1976-04-01

    Strict criteria for the diagnosis of temporary gluten intolerance are formulated in the light of the case of an 8-week-old infant with severe diarrhoea and failure to thrive, who recovered on an elimination diet that was gluten-free. 8 weeks later an oral challenge with 2.5 g twice daily of powdered gluten for one day produced diarrhoea, weight loss, and impaired xylose absorption. Gluten was successfully reintroduced into the diet 9 months later without incident. Jejunal histology remains normal after 26 months of a daily diet that contains 5 to 10 g gluten.

  1. Temporary effects of alcohol on color vision

    Science.gov (United States)

    Geniusz, Maciej K.; Geniusz, Malwina; Szmigiel, Marta; Przeździecka-Dołyk, Joanna

    2017-09-01

    The color vision has been described as one to be very sensitive to the intake of several chemicals. The present research reviews the published literature that is concerned with color vision impairment due to alcohol. Most of this research considers people under long-term effects of alcohol. However, there is little information about temporary effects of alcohol on color vision. A group of ten volunteers aged 18-40 was studied. During the study levels of alcohol in the body were tested with a standard breathalyzer while color vision were studied using Farnsworth Munsell 100 Hue Color Vision Tests. Keywords: Col

  2. Local hypertrichosis: A rare complication of a temporary henna tattoo.

    Science.gov (United States)

    Akpolat, Nebahat Demet; Aras, Arzu

    2016-01-01

    Temporary henna tattoos have become increasingly widespread among children and young people, especially in holiday spots in recent years. Although reactions to henna tattoo are becoming progressively more common, only few cases of a henna pseudo-tattoo resulting in temporary hypertrichosis have been reported so far. Here, we have reported a 5-year-old girl who developed allergic contact dermatitis and localized hypertrichosis on her right arm after application of temporary henna tattoo during summer holiday.

  3. 8 CFR 245a.2 - Application for temporary residence.

    Science.gov (United States)

    2010-01-01

    ... (No. 76-C-4268 (N.D. ILL. March 22, 1977)); that is, an alien from an independent country of the... States was due merely to a brief temporary trip abroad due to emergent or extenuating circumstances... employment and travel abroad for temporary resident status applicants under section 245A(a) of the Act may...

  4. 14 CFR 47.16 - Temporary registration numbers.

    Science.gov (United States)

    2010-01-01

    ...) Temporary registration numbers may not be used to fly aircraft into the United States for the purpose of... for as many temporary registration numbers as are necessary for his business. The application must be... used on a flight outside the United States for delivery purposes, the holder shall record the...

  5. 23 CFR 1235.5 - Temporary removable windshield placards.

    Science.gov (United States)

    2010-04-01

    ... 23 Highways 1 2010-04-01 2010-04-01 false Temporary removable windshield placards. 1235.5 Section 1235.5 Highways NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION AND FEDERAL HIGHWAY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION GUIDELINES UNIFORM SYSTEM FOR PARKING FOR PERSONS WITH DISABILITIES § 1235.5 Temporary removable windshield placards. (a)...

  6. Temporary Employment Contracts in Academia: A Real Option View

    Science.gov (United States)

    Brady, Malcolm

    2017-01-01

    This paper examines the strategic use of temporary employment contracts in dealing with supply uncertainty in the form of employee ability that is slow to reveal itself, for example in academia where there exist significant time lags in demonstration of research ability. A temporary contract is modeled as a real option, specifically as a…

  7. 25 CFR 700.175 - Temporary emergency moves.

    Science.gov (United States)

    2010-04-01

    ... move not been made. (iv) The Commission will pay all costs in connection with the move to temporary... temporary move, based upon the criteria set forth by the Commission. (2) The estimated duration of the... Indians THE OFFICE OF NAVAJO AND HOPI INDIAN RELOCATION COMMISSION OPERATIONS AND RELOCATION PROCEDURES...

  8. 22 CFR 123.3 - Temporary import licenses.

    Science.gov (United States)

    2010-04-01

    ... articles, unless exempted from this requirement pursuant to § 123.4. This requirement applies to: (1) Temporary imports of unclassified defense articles that are to be returned directly to the country from... DEFENSE ARTICLES § 123.3 Temporary import licenses. (a) A license (DSP-61) issued by the Directorate of...

  9. 32 CFR Attachment 5 to Part 855 - Sample Temporary Agreement

    Science.gov (United States)

    2010-07-01

    ... 32 National Defense 6 2010-07-01 2010-07-01 false Sample Temporary Agreement 5 Attachment 5 to Part 855 National Defense Department of Defense (Continued) DEPARTMENT OF THE AIR FORCE AIRCRAFT CIVIL AIRCRAFT USE OF UNITED STATES AIR FORCE AIRFIELDS Pt. 855, Att. 5 Attachment 5 to Part 855—Sample Temporary...

  10. 29 CFR 1926.154 - Temporary heating devices.

    Science.gov (United States)

    2010-07-01

    ... 29 Labor 8 2010-07-01 2010-07-01 false Temporary heating devices. 1926.154 Section 1926.154 Labor... Temporary heating devices. (a) Ventilation. (1) Fresh air shall be supplied in sufficient quantities to... heating devices shall be installed to provide clearance to combustible material not less than the amount...

  11. Temporary anchorage devices – Mini-implants

    Science.gov (United States)

    Singh, Kamlesh; Kumar, Deepak; Jaiswal, Raj Kumar; Bansal, Amol

    2010-01-01

    Orthodontists are accustomed to using teeth and auxiliary appliances, both intraoral and extraoral, to control anchorage. These methods are limited in that it is often difficult to achieve results commensurate with our idealistic goals. Recently, a number of case reports have appeared in the orthodontic literature documenting the possibility of overcoming anchorage limitations via the use of temporary anchorage devices—biocompatible devices fixed to bone for the purpose of moving teeth, with the devices being subsequently removed after treatment. Although skeletal anchorage is here to stay in orthodontics, there are still many unanswered questions. This article describes the development of skeletal anchorage and provides an overview of the use of implants for orthodontic anchorage. PMID:22442547

  12. Schedules of Controlled Substances: Temporary Placement of 4-Fluoroisobutyryl Fentanyl into Schedule I. Temporary scheduling order.

    Science.gov (United States)

    2017-05-03

    The Administrator of the Drug Enforcement Administration is issuing this temporary scheduling order to schedule the synthetic opioid, N-(4-fluorophenyl)-N-(1-phenethylpiperidin-4-yl)isobutyramide (4-fluoroisobutyryl fentanyl or para-fluoroisobutyryl fentanyl), and its isomers, esters, ethers, salts and salts of isomers, esters, and ethers, into schedule I pursuant to the temporary scheduling provisions of the Controlled Substances Act. This action is based on a finding by the Administrator that the placement of 4-fluoroisobutyryl fentanyl into schedule I of the Controlled Substances Act is necessary to avoid an imminent hazard to the public safety. As a result of this order, the regulatory controls and administrative, civil, and criminal sanctions applicable to schedule I controlled substances will be imposed on persons who handle (manufacture, distribute, reverse distribute, import, export, engage in research, conduct instructional activities or chemical analysis, or possess), or propose to handle, 4-fluoroisobutyryl fentanyl.

  13. 78 FR 44965 - Notice of Temporary Closure and Temporary Restrictions of Specific Uses on Public Lands for the...

    Science.gov (United States)

    2013-07-25

    ... human body a controlled substance in violation of any state or Federal law, or regulation issued... Desert playa. DATES: The temporary closure and temporary restrictions will be in effect from August 12... approved by the BLM authorized officer. B. Alcohol 1. Possession of an open container of an alcoholic...

  14. Permanent and temporary pacemaker implantation after orthotopic heart transplantation

    Directory of Open Access Journals (Sweden)

    Bacal Fernando

    2000-01-01

    Full Text Available PURPOSE:To determine the indication for and incidence and evolution of temporary and permanent pacemaker implantation in cardiac transplant recipients. METHODS: A retrospective review of 114 patients who underwent orthotopic heart transplantation InCor (Heart Institute USP BR between March 1985 and May 1993. We studied the incidence of and indication for temporary pacing, the relationship between pacing and rejection, the need for pemanent pacing and the clinical follow-up. RESULTS: Fourteen of 114 (12%heart transplant recipients required temporary pacing and 4 of 114 (3.5% patients required permanent pacing. The indication for temporary pacing was sinus node dysfunction in 11 patients (78.5% and atrioventricular (AV block in 3 patients (21.4%. The indication for permanent pacemaker implantation was sinus node dysfunction in 3 patients (75% and atrioventricular (AV block in 1 patient (25%. We observed rejection in 3 patients (21.4% who required temporary pacing and in 2 patients (50% who required permanent pacing. The previous use of amiodarone was observed in 10 patients (71.4% with temporary pacing. Seven of the 14 patients (50% died during follow-up. CONCLUSION: Sinus node dysfunction was the principal indication for temporary and permanent pacemaker implantation in cardiac transplant recipients. The need for pacing was related to worse prognosis after cardiac transplantation.

  15. Return to Work After Temporary Disability Pension in Finland.

    Science.gov (United States)

    Laaksonen, Mikko; Gould, Raija

    2015-09-01

    When it is possible that the employee's work ability can be restored through treatment or rehabilitation, disability pension in Finland is granted for a fixed period. We examined which factors are associated with return to work (RTW) after such temporary disability pension. The study included all Finnish residents whose temporary disability pension from the earnings-related pension system started in 2008 (N = 10,269). Competing risks regression analysis was applied to examine register-based determinants for RTW after temporary disability pension due to mental disorders, musculoskeletal diseases, other diseases, and injury over a 4-year follow-up period. The overall cumulative incidence of RTW was 25%. RTW was more probable after temporary disability pension due to injury and musculoskeletal diseases and less probable after temporary disability pension due to mental disorders. Younger age and higher education increased RTW but differences between genders, private and public sector employees, and occupational classes were relatively small. The probability of RTW was higher among those who were employed before their temporary disability pension (subhazard ratio in multivariate analysis 2.41 (95% CI 2.13-2.72) and among the 9% who participated in vocational rehabilitation during their pension [SHR 2.10 (95% CI 1.90-2.31)]. With some exceptions, the results were fairly similar for all diagnostic causes of temporary disability pension. Return to work after temporary disability pension was relatively uncommon. Nevertheless, in all diagnostic groups RTW continued for the whole follow-up period. The low educated and those not employed before temporary disability pension need more support in their RTW. The strong association between vocational rehabilitation and RTW suggests that increasing rehabilitation among those with impaired work ability may promote RTW.

  16. Temporary tattoo for wireless human pulse measurement

    Science.gov (United States)

    Pepłowski, Andrzej; Janczak, Daniel; Krzemińska, Patrycja; Jakubowska, Małgorzata

    2016-09-01

    Screen-printed sensor for measuring human pulse was designed and first tests using a demonstrator device were conducted. Various materials and sensors' set ups were compared and the results are presented as the starting point for fabrication of fully functional device. As a screen printing substrate, commercially available temporary tattoo paper was used. Using previously developed nanomaterials-based pastes design of a pressure sensor was printed on the paper and attached to the epidermis. Measurements were aimed at determining sensors impedance constant component and its variability due to pressure wave caused by the human pulse. The constant component was ranging from 2kΩ to 6kΩ and the variations of the impedance were ranging from +/-200Ω to +/-2.5kΩ, depending on the materials used and the sensor's configuration. Calculated signal-to-noise ratio was 3.56:1 for the configuration yielding the highest signal level. As the device's net impedance influences the effectiveness of the wireless communication, the results presented allow for proper design of the sensor for future health-monitoring devices.

  17. Sealing of temporary cements in endodontics

    Directory of Open Access Journals (Sweden)

    Eduardo Gomes Ferraz

    2009-10-01

    Full Text Available Objective: The aim of this study was to assess the coronal leakage of three temporary cements in endodontics: Bioplic® (Biodinâmica, Londrina, Brazil, IRM® (Dentsply, Petrópolis, Brazil and Coltosol® (Vigodent, Bonsucesso, Brazil. Methods: Forty human pre-molars were divided into four groups: I (Bioplic® + adhesive system, II (Bioplic®, Biodinâmica, Londrina, Brasil, III (IRM®, Dentsply, Petrópolis, Brasil, and IV (Coltosol®, Vigodent, Bonsucesso, Brasil. The teeth were immersed in 1% Rodamine and kept at 37°C for 24h. They were then thermal cycled for seven days. Temperatures ranged between 5, 37 and 50°C. After longitudinal sectioning the leakage was measured in mm and statistical analysis was performed using the ANOVA and Tukey tests with a level of significance of 5%.Results: In the group in which Bioplic® was used with adhesive, a lower level of leakage was detected (0.37 ± 0.24. There was significant difference (p<0.05 between groups I and III, I and IV, II and III. Conclusion: It was concluded that all the tested material showed coronal leakage and that the use of the (Bioplic® Biodinâmica, Londrina, Brasilplus adhesive system showed the lowest level of leakage.

  18. The Liminality of Temporary Agency Work: Exploring the Dimensions of Temporary Agency Workers’ Liminal Experience

    DEFF Research Database (Denmark)

    Winkler, Ingo; Mahmood, Mustafa Khalil

    2015-01-01

    along which liminality can unfold in organizational and work-related contexts. We argue that future studies should explore the various dimensions in other contexts of passages from one relatively stable state to another. In doing so, similarities and differences between various liminal experiences...... on political anthropology we identify the dimensions of ‘types of subjects,’‘time,’ ‘space,’ and ‘scale’ in order to analytically unlock the liminal experience. Exemplifying our concept we present the findings from an own study of temporary agency workers in Denmark. Exploring the workers’ interpretations...

  19. 20 CFR 655.20 - Applications for temporary employment certification.

    Science.gov (United States)

    2010-04-01

    ... Nursing in the United States (H-2B Workers) § 655.20 Applications for temporary employment certification..., the employer will be required to conduct another labor market for the portion of time beyond 12 months. ...

  20. 20 CFR 655.21 - Supporting evidence for temporary need.

    Science.gov (United States)

    2010-04-01

    ... Attestations for Temporary Employment in Occupations Other Than Agriculture or Registered Nursing in the United... containing the following: (1) A description of the employer's business history and activities (i.e., primary...

  1. 44 CFR 9.13 - Particular types of temporary housing.

    Science.gov (United States)

    2010-10-01

    ... is the only practicable alternative. The following factors shall be substituted for the factors in... risk to the temporary housing occupant; (iii) Cost effectiveness; (iv) Social and neighborhood patterns...

  2. 7 CFR 160.41 - Issuance of temporary license.

    Science.gov (United States)

    2010-01-01

    ... Agriculture Regulations of the Department of Agriculture (Continued) AGRICULTURAL MARKETING SERVICE (Standards, Inspections, Marketing Practices), DEPARTMENT OF AGRICULTURE (CONTINUED) NAVAL STORES REGULATIONS AND... processor of the need therefor and the competency of the applicant for such temporary license. Such...

  3. Drying firewood in a temporary solar kiln: a case study.

    Science.gov (United States)

    George R. Sampson; Anthony F. Gasbarro

    1986-01-01

    A pilot study was undertaken to determine drying rates for small diameter, unsplit paper birch firewood that was dried: (1) in a conventional top-covered pile; (2) in a simple, temporary solar kiln; and (3) in tree length. Drying rates were the same for firewood piles whether they were in the temporary solar kilns or only covered on top to keep rain or snow from...

  4. The savings behavior of temporary and permanent migrants in Germany

    OpenAIRE

    Bauer, Thomas K.; Sinning, Mathias

    2005-01-01

    This paper examines the relative savings position of migrant households in West Germany, paying particular attention to differences between temporary and permanent migrants. Utilizing household level data from the German Socio-Economic Panel (GSOEP), our findings reveal significant differences in the savings rates between foreign-born and German-born individuals. These differences disappear, however, for temporary migrants, if their remittances are taken into account. Fixed effects estimation...

  5. The impacts of temporary and anticipated tourism spending

    OpenAIRE

    Grant Allan; Patrizio Lecca; Kim Swales

    2014-01-01

    Part of the local economic impact of a major sporting event comes from the associated temporary tourism expenditures. Typically demand-driven Input-Output (IO) methods are used to quantify the impacts of such expenditures. However, IO modelling has specific weaknesses when measuring temporary tourism impacts; particular problems lie in its treatment of factor supplies and its lack of dynamics. Recent work argues that Computable General Equilibrium (CGE) analysis is more appropriate and this h...

  6. Temporary worsening of kidney function following aortic reconstructive surgery.

    Science.gov (United States)

    Ghaheri, Hafez; Kazemzadeh, Gholam Hossein; Beigi, Ali Akbar

    2008-07-01

    Little is known about the incidence of temporary kidney dysfunction following major vascular surgeries. We aimed to assess the frequency of temporary decreased kidney function following aortic surgeries. In a retrospective study, we assessed 108 hospital records of the patients who had undergone elective open abdominal surgery of aortic aneurysm. Preoperative and postoperative (days 1, 2, and 3) data on estimated glomerular filtration rate (GFR) were collected and evaluated in relation to the patients' clinical characteristics and outcomes. A decline greater than 10% in GFR on day 1 or 2, and then, an increase of GFR to a level of maximum 10% below the baseline value on the third postoperative day was considered as temporary worsening of kidney function. Postoperative alterations of GFR not greater than 10% in relation to the baseline were considered as improved or unchanged kidney function. Two patients with persistent decrease in GFR were excluded. Temporary worsening of kidney function was seen in 25 patients (23.6%). Short-term mortality rate was 44.0% in this group of patients, while it was 17.3% in those without decreased GFR (P = .006). According to the regression analysis, the only predictor of mortality was temporary worsening of kidney function, with a hazard ratio of 4.03 (95% confidence interval, 1.44 to 11.31; P = .008). Nearly 1 out of 4 aortic surgeries results in kidney dysfunction. Albeit temporary in most cases, it seems to be associated with a higher short-term mortality rate.

  7. Temporary jobs and the severity of workplace accidents.

    Science.gov (United States)

    Picchio, Matteo; van Ours, Jan C

    2017-06-01

    From the point of view of workplace safety, it is important to know whether having a temporary job has an effect on the severity of workplace accidents. We present an empirical analysis on the severity of workplace accidents by type of contract. We used microdata collected by the Italian national institute managing the mandatory insurance against work related accidents. We estimated linear models for a measure of the severity of the workplace accident. We controlled for time-invariant fixed effects at worker and firm levels to disentangle the impact of the type of contract from the spurious one induced by unobservables at worker and firm levels. Workers with a temporary contract, if subject to a workplace accident, were more likely to be confronted with severe injuries than permanent workers. When correcting the statistical analysis for injury under-reporting of temporary workers, we found that most of, but not all, the effect is driven by the under-reporting bias. The effect of temporary contracts on the injury severity survived the inclusion of worker and firm fixed effects and the correction for temporary workers' injury under-reporting. This, however, does not exclude the possibility that, within firms, the nature of the work may vary between different categories of workers. For example, temporary workers might be more likely to be assigned dangerous tasks because they might have less bargaining power. The findings will help in designing public policy effective in increasing temporary workers' safety at work and limiting their injury under-reporting. Copyright © 2017. Published by Elsevier Ltd.

  8. Temporary henna tattoo is unsafe in atopic children.

    Science.gov (United States)

    Corrente, Stefania; Moschese, Viviana; Chianca, Marco; Graziani, Simona; Iannini, Roberta; La Rocca, Maria; Chini, Loredana

    2007-03-01

    Temporary henna tattoos have become increasingly popular as a safe alternative to permanent tattoos among American and European children and teenagers during the summer holidays. Currently, temporary henna tattoos contain not only henna, but also other additives such as para-phemylenediamine (PPD), which is considered to be the chemical agent that most frequently causes skin reactions associated with the use of commercial black henna. In this report, we describe an 11-year-old boy who applied a temporary black henna tattoo on his right arm during the summer holidays in Greece and developed a severe contact dermatitis at the tattoo site with residual hypopigmentation. He had no previous history of contact dermatitis, however he did suffer from seasonal allergic rhinitis and atopic dermatitis. Patch testing revealed a strong reaction to PPD, a substance commonly contained in temporary henna tattoo preparations. Henna tattoos are an increasing problem worldwide since they carry an increased risk of severe skin reactions; therefore we suggest that the use of temporary henna tattoos in children be discouraged.

  9. Hepatocellular Carcinoma Complicated by Gastroduodenal Obstruction: Palliative Treatment with Metallic Stent Placement

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Ye Jin; Kim, Jin Hyoung, E-mail: m1fenew@daum.net; Song, Ho-Young; Park, Jung-Hoon; Na, Han Kyu; Kim, Pyeong Hwa; Fan, Yong [University of Ulsan College of Medicine, Department of Radiology and Research Institute of Radiology, Asan Medical Center (Korea, Republic of)

    2012-10-15

    Purpose: To evaluate the clinical effectiveness of self-expandable metallic stents in seven patients with malignant gastroduodenal obstruction caused by inoperable hepatocellular carcinoma (HCC). Methods: Seven patients with gastroduodenal obstruction caused by advanced HCC underwent metallic stent placement from 2003 to 2010. These patients had total dysphagia (n = 5) or were able to eat only liquids (n = 2) before stent placement. Patients had Eastern Cooperative Oncology Group performance scores of 2 or 3, and Child-Pugh classification B or C. Results: Stent placement was technically successful in all seven patients (100%) and clinically successful in six (86%). Five patients could eat a soft diet, and one patient tolerated regular diet after stent placement. Stent-related obstructive jaundice occurred in one patient. One patient had hematemesis 11 days after stent placement. Overall mean survival was 51 days (range, 10-119 days). Stent patency was preserved in six patients with clinical success until death. Conclusion: Placement of a covered self-expandable metallic stent may offer good palliation in patients with gastroduodenal obstruction due to advanced HCC.

  10. Temporary Cementitious Sealers in Enhanced Geothermal Systems

    Energy Technology Data Exchange (ETDEWEB)

    Sugama T.; Pyatina, T.; Butcher, T.; Brothers, L.; Bour, D.

    2011-12-31

    Unlike conventional hydrothennal geothermal technology that utilizes hot water as the energy conversion resources tapped from natural hydrothermal reservoir located at {approx}10 km below the ground surface, Enhanced Geothermal System (EGS) must create a hydrothermal reservoir in a hot rock stratum at temperatures {ge}200 C, present in {approx}5 km deep underground by employing hydraulic fracturing. This is the process of initiating and propagating a fracture as well as opening pre-existing fractures in a rock layer. In this operation, a considerable attention is paid to the pre-existing fractures and pressure-generated ones made in the underground foundation during drilling and logging. These fractures in terms of lost circulation zones often cause the wastage of a substantial amount of the circulated water-based drilling fluid or mud. Thus, such lost circulation zones must be plugged by sealing materials, so that the drilling operation can resume and continue. Next, one important consideration is the fact that the sealers must be disintegrated by highly pressured water to reopen the plugged fractures and to promote the propagation of reopened fractures. In response to this need, the objective of this phase I project in FYs 2009-2011 was to develop temporary cementitious fracture sealing materials possessing self-degradable properties generating when {ge} 200 C-heated scalers came in contact with water. At BNL, we formulated two types of non-Portland cementitious systems using inexpensive industrial by-products with pozzolanic properties, such as granulated blast-furnace slag from the steel industries, and fly ashes from coal-combustion power plants. These byproducts were activated by sodium silicate to initiate their pozzolanic reactions, and to create a cemetitious structure. One developed system was sodium silicate alkali-activated slag/Class C fly ash (AASC); the other was sodium silicate alkali-activated slag/Class F fly ash (AASF) as the binder of temper

  11. Transforming knowledge across domains in the temporary development spaces

    DEFF Research Database (Denmark)

    Brønnum, Louise

    This paper addresses transformation of knowledge across different knowledge domains and competencies in the Front End of Innovation (FEI) [Koen 2002].We examine the temporary spaces [Clausen, Yoshinaka 2007] that emerge when different knowledge domains are brought into play (implicit or explicit......) in staging innovative concept development. FEI appears as temporary spaces for innovative processes; and studies have pointed out the limited uptake of user knowledge (Elgaard Jensen 2012). This paper will discuss the possibilities and barriers for uptake of user knowledge in FEI in relation...... to the constitutions of these temporary spaces. There seems to be a limited understanding of: how knowledge is transferred and transformed into design objects facilitating a process where knowledge enables innovative thinking across knowledge boundaries. The paper is based on empirical data primarily from case studies...

  12. Temporary sharing prompts unrestrained disclosures that leave lasting negative impressions.

    Science.gov (United States)

    Hofstetter, Reto; Rüppell, Roland; John, Leslie K

    2017-11-07

    With the advent of social media, the impressions people make on others are based increasingly on their digital disclosures. However, digital disclosures can come back to haunt, making it challenging for people to manage the impressions they make. In field and online experiments in which participants take, share, and evaluate self-photographs ("selfies"), we show that, paradoxically, these challenges can be exacerbated by temporary-sharing media-technologies that prevent content from being stored permanently. Relative to permanent sharing, temporary sharing affects both whether and what people reveal. Specifically, temporary sharing increases compliance with the request to take a selfie (study 1) and induces greater disclosure risks (i.e., people exhibit greater disinhibition in their selfies, studies 1 and 2). This increased disclosure is driven by reduced privacy concerns (study 2). However, observers' impressions of sharers are insensitive to permanence (i.e., whether the selfie was shared temporarily versus permanently) and are instead driven by the disinhibition exhibited in the selfie (studies 4-7). As a result, induced by the promise of temporary sharing, sharers of uninhibited selfies come across as having worse judgment than those who share relatively discreet selfies (studies 1, 2, and 4-7)-an attributional pattern that is unanticipated by sharers (study 3), that persists days after the selfie has disappeared (study 5), is robust to personal experience with temporary sharing (studies 6A and 6B), and holds even among friends (studies 7A and 7B). Temporary sharing may bring back forgetting, but not without introducing new (self-presentational) challenges. Copyright © 2017 the Author(s). Published by PNAS.

  13. Deploying temporary networks for upscaling of sparse network stations

    Science.gov (United States)

    Coopersmith, Evan J.; Cosh, Michael H.; Bell, Jesse E.; Kelly, Victoria; Hall, Mark; Palecki, Michael A.; Temimi, Marouane

    2016-10-01

    Soil observations networks at the national scale play an integral role in hydrologic modeling, drought assessment, agricultural decision support, and our ability to understand climate change. Understanding soil moisture variability is necessary to apply these measurements to model calibration, business and consumer applications, or even human health issues. The installation of soil moisture sensors as sparse, national networks is necessitated by limited financial resources. However, this results in the incomplete sampling of the local heterogeneity of soil type, vegetation cover, topography, and the fine spatial distribution of precipitation events. To this end, temporary networks can be installed in the areas surrounding a permanent installation within a sparse network. The temporary networks deployed in this study provide a more representative average at the 3 km and 9 km scales, localized about the permanent gauge. The value of such temporary networks is demonstrated at test sites in Millbrook, New York and Crossville, Tennessee. The capacity of a single U.S. Climate Reference Network (USCRN) sensor set to approximate the average of a temporary network at the 3 km and 9 km scales using a simple linear scaling function is tested. The capacity of a temporary network to provide reliable estimates with diminishing numbers of sensors, the temporal stability of those networks, and ultimately, the relationship of the variability of those networks to soil moisture conditions at the permanent sensor are investigated. In this manner, this work demonstrates the single-season installation of a temporary network as a mechanism to characterize the soil moisture variability at a permanent gauge within a sparse network.

  14. [Temporary hearing threshold shift in policemen after firearm training].

    Science.gov (United States)

    Cassano, F; Montesano, Roberta; Bobbio, Elena; Borraccia, V; Volpe, C; Bavaro, P; Quaranta, N

    2012-01-01

    The paper involves exposure to noise of the State Police officers connected with the use of firearms. The noise generated by these weapons is of short duration and high intensity. The research was carried out during the sessions of firearm training of State Police officers to assess exposure to noise. The values of the various investigations, both audiometric and phonometric, carried out made it possible to demonstrate a significant exposure and a temporary increase in the threshold, above the frequency of 6000 Hz. Even taking account of the abatement from use of headphones, an exposure was demonstrated that was above the statutory limits, as was confirmed by the temporary hearing threshold shift.

  15. [Development and research of temporary demand pacemaker with electrocardiosignal display].

    Science.gov (United States)

    Fan, Shounian; Jiang, Chenxi; Cai, Yunchang; Pan, Yangzhong; Yang, Tianhe; Wu, Qiang; Zheng, Yaxi; Liu, Xiaoqiao; Li, Shiying

    2004-08-01

    A temporary demand pacemaker with electrocardiosignal display is introduced in this paper. Double way low-noise electrocardiosignal preamplifier, amplitude limiter, high and low pass filter, 50 Hz notch filter, TTL level generator and stimulating pulse formation circuit are components of the hardware electrocircuit. The demand pacing and the electrocardiosignal display are separately controlled by the software in which the double microcontrollers communications technique is used. In this study, liquid crystal display is firstly used in body surface electrocardiosignal display or intracardial electrophysiologic signal display when the temporary demand pacemaker is installed and put into use. The machine has proven clinically useful and can be of wide appliation.

  16. Demand for temporary agency nurses and nursing shortages.

    Science.gov (United States)

    Seo, Sukyong; Spetz, Joanne

    2013-08-01

    There is an ongoing debate about the reasons for the growth of temporary employment of registered nurses (RNs). Some argue that efficiency incentives to increase flexibility and reduce labor costs are the principal cause, while others point to shortages of RNs as the stronger determinant. Using hospital-level data from California's Office of Statewide Health Planning and Development, we find a significant trend of increasing demand for agency nurses during the years of RN shortage. Demand rose with inpatient days, patient demand fluctuation, and the level of fringe benefits. Competition between hospitals and unionization, however, did not affect hospitals' demand for temporary RNs. © The Author(s) 2014.

  17. Event-related temporary collocations in modern english newspaperdiscourse

    Directory of Open Access Journals (Sweden)

    Е В Терехова

    2010-06-01

    Full Text Available The paper discusses collocations called by the author as «temporary collocations». The temporary collocations (TC under discussion are understood as expressions with one marked component, being peripheral to the mainstream of idioms and phrasal expressions, which enables us to treat the analyzed TC in a narrow slightly idiomatic meaning. Quite a few examples borrowed from the authentic English newspapers and magazines are used to demonstrate the relationship between the event and the emergence of the TC; also the discourse definition is provided with a focus on interdependence between the TC and the discourse.

  18. A Case of Localized Hypertrichosis Due to Temporary Henna Tattoo

    Directory of Open Access Journals (Sweden)

    Deren Özcan

    2014-09-01

    Full Text Available Temporary henna tattoos have become very popular among children and teenagers in recent years. However, the use of additives to shorten the application time and darken the color of commercial henna, such as para-phenylenediamine, has led to an increased risk of complications due to those tattoos. The most commonly seen complications are allergic contact dermatitis, hypertrophic scarring, keloid formation, hyperpigmentation, and hypopigmentation. Herein; a 13-year-old girl who developed localized hypertrichosis after a temporary henna tattoo application was presented.

  19. Temporary emergency pacing-an orphan in district hospitals

    DEFF Research Database (Denmark)

    Gjesdal, Knut; Johansen, Jens Brock; Gadler, Fredrik

    2012-01-01

    This editorial discusses a report on the 1 year experience with temporary pacing, especially in the emergency setting, in several Norwegian district hospitals. The vast majority of the patients received transvenous temporary pacing, and the majority of leads were placed by noncardiologists....... The procedure times were long and complications were frequent. The organization of emergency pacing is discussed, and we suggest that unless qualified physicians can establish transvenous pacing, the patients who need that should be transferred with transcutaneous pacing as back-up during transport...

  20. Exits from Temporary Jobs in Europe: A Competing Risks Analysis

    DEFF Research Database (Denmark)

    D'Addio, Anna Christina; Rosholm, Michael

    2005-01-01

    We study transitions out of temporary jobs using the waves 1994-1999 of the European Community Household Panel applying a discrete time duration model. Specifically, we use a multinomial logitmodel distinguishing between exits into permanent employment and non-employment. Two different specificat......We study transitions out of temporary jobs using the waves 1994-1999 of the European Community Household Panel applying a discrete time duration model. Specifically, we use a multinomial logitmodel distinguishing between exits into permanent employment and non-employment. Two different...

  1. Multiple Institutional Logics in Inter-Institutional Temporary Organizations

    DEFF Research Database (Denmark)

    Pemsel, Sofia; Söderlund, Jonas

    distinct response strategies the project actors relied upon to deal with the multiplicity of logics: total integration, partial decoupling, avoidance, and surfing. We discuss how these response strategies were used, in what situations, and what effects they had on the organization. The paper contributes......The idea of multiple institutional logics currently draws more and more attention as many organizational actors are forced to operate in ever more complex, temporary and vivid collaborations. We draw on findings from a unique case study of a temporary organization that carried the responsibility...

  2. The Liminality of Temporary Agency Work: Exploring the Dimensions of Danish Temporary Agency Workers’ Liminal Experience

    Directory of Open Access Journals (Sweden)

    Ingo Winkler

    2015-03-01

    Full Text Available The concept of liminality refers to the experience to be betwixt-and-between social structures and the associated positions, statuses, and roles. We advance the original use of the concept by introducing the various meanings that the experience of being in a liminal state can take. Drawing on political anthropology we identify the dimensions of ‘types of subjects,’ ‘time,’ ‘space,’ and ‘scale’ in order to analytically unlock the liminal experience. Exemplifying our concept we present the findings from an own study of temporary agency workers in Denmark. Exploring the workers’ interpretations allows us to illustrate to what extent their employment situation constitutes a multi-dimensional liminal experience between established social structures and employment categories. The article emphasizes the complexity of the liminal experience. Theoretically and empirically, we show the many meanings along which liminality can unfold in organizational and work-related contexts. We argue that future studies should explore the various dimensions in other contexts of passages from one relatively stable state to another. In doing so, similarities and differences between various liminal experiences and the role the various dimensions play could be identified.

  3. 47 CFR 90.159 - Temporary and conditional permits.

    Science.gov (United States)

    2010-10-01

    ... SERVICES PRIVATE LAND MOBILE RADIO SERVICES Applications and Authorizations § 90.159 Temporary and... minimum of ten business days has passed between submission of the application to the Commission and the... MHz (subpart T), Business Radio (subpart D), 929-930 MHz Paging (subpart P), and Specialized Mobile...

  4. Temporary and long-term consequences of bereavement on happiness

    NARCIS (Netherlands)

    Moor, J.A.; de Graaf, P.M.

    In this article, we examine the temporary and long-term consequences of the death of a parent or child on happiness. According to set-point theory external conditions are expected to only have a short-term or limited influence on happiness. This directly contradicts the basic assumption of affective

  5. The terrestrial invertebrate fauna of a temporary stream in southern ...

    African Journals Online (AJOL)

    The terrestrial invertebrate fauna of an intermittent stream was examined in the absence of surface flows within the context of the flood pulse concept. ... The concept of the flood pulse should be expanded to include aseasonal and secular variations in flow which in temporary streams create lateral movements that provide ...

  6. 18 CFR 2.57 - Temporary certificates-pipeline companies.

    Science.gov (United States)

    2010-04-01

    ...-pipeline companies. 2.57 Section 2.57 Conservation of Power and Water Resources FEDERAL ENERGY REGULATORY... Policy and Interpretations Under the Natural Gas Act § 2.57 Temporary certificates—pipeline companies... the proposed construction is of major proportions. Pipeline companies are accordingly urged to conduct...

  7. Genre-related temporary collocations in english discourse

    Directory of Open Access Journals (Sweden)

    Е В Терехова

    2009-09-01

    Full Text Available The paper discusses genre-related temporary collocations (TC. It also provides genre definition, analyzes different genre-related TC which are used in TV speeches, diplomatic texts, and English media texts. TC implementing in genre-related texts, preferential reinterpretation criteria which characterize terminology formation, their interpretation, and their translation from English into Russian is considered.

  8. Temporary Jobs and the Severity of Workplace Accidents

    NARCIS (Netherlands)

    Picchio, Matteo; van Ours, Jan

    2016-01-01

    From the point of view of workplace safety, it is important to know whether having a temporary job has an effect on the severity of workplace accidents. We present an empirical analysis on the severity of workplace accidents by type of contract. Method: We used micro data collected by the Italian

  9. Evolution of a Biosynthetic Temporary Skin Substitute: A Preliminary Study.

    Science.gov (United States)

    Woodroof, Aubrey; Phipps, Richard; Woeller, Collynn; Rodeheaver, George; Naughton, Gail K; Piney, Emmett; Hickerson, William; Branski, Ludwik; Holmes, James H

    2015-01-01

    To compare PermeaDerm to first temporary biosynthetic skin substitute (Biobrane, cleared by the Food and Drug Administration in 1979). Different temporary skin substitutes (Biobrane, PermeaDerm, and PermeaDerm derivatives) were tested for physical differences, impact on healing wounds, inflammatory response, and ability to allow adequate growth of dermal fibroblasts and mesenchymal stem cells without accumulation of excessive scar-forming myofibroblasts. Proliferation of fibroblasts and stem cells on various skin substitutes was measured, and myofibroblast marker accumulation was evaluated by the expression of α-smooth muscle actin and fibronectin. Fibroblast migration was measured by tracking viable cells with MTT [3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide] dye. In vivo testing shows PermeaDerm works well as a temporary skin substitute, performing better than Biobrane with respect to inflammation and fluid accumulation. Tissue culture techniques revealed that cells on PermeaDerm grow in a more uniform fashion and migrated to a greater extent than cells on Biobrane. Furthermore, cells grown in the presence of PermeaDerm expressed lower levels of the myofibroblast markers α-smooth muscle actin and fibronectin than cells grown on Biobrane. PermeaDerm with variable porosity possesses all attributes and properties known to be important for a successful temporary skin substitute and enables the clinician to control porosity from essentially zero to what the wound requires. The ability of the clinician to minimize wound desiccation without fluid accumulation is related to the reduction of punctate scarring.

  10. 17 CFR 232.201 - Temporary hardship exemption.

    Science.gov (United States)

    2010-04-01

    ... no later than one business day after the date on which the filing was to be made. (1) An electronic... submitted to the Commission within six business days of filing the paper format document. The electronic... REGULATION S-T-GENERAL RULES AND REGULATIONS FOR ELECTRONIC FILINGS Hardship Exemptions § 232.201 Temporary...

  11. 76 FR 35909 - Temporary Concession Contract for Blue Ridge Parkway

    Science.gov (United States)

    2011-06-20

    ... lodging accommodations, food and beverage, retail sales, boat rentals, and other services at Crabtree... Doc No: 2011-15060] DEPARTMENT OF THE INTERIOR National Park Service [NPS-WASO-CONC-0511-7182; 2410-OYC] Temporary Concession Contract for Blue Ridge Parkway AGENCY: National Park Service, Interior...

  12. Performance of yam microtubers from temporary immersion system ...

    African Journals Online (AJOL)

    The yam clones ´Pacala Duclos´ and ´Belep´ of Dioscorea alata were used to evaluate the performance of microtubers formed in temporary immersion systems (TIS) in field conditions. Previously sprouted microtubers with a fresh weight higher than 3.0 gFW were used while in vitro plants and tuber crowns from conventional ...

  13. Performance of yam microtubers from temporary immersion system ...

    African Journals Online (AJOL)

    Jane

    2011-08-22

    Aug 22, 2011 ... as research tools: a review. Am. J. Potato Res. 78: 47-55. Escalona M (2006) Temporary inmersion beats traditional techniques on all fronts. Prophyta annual. pp. 48-50. Hernandez A, Perez JM, Bosh D, Rivero L, Camacho E (1999) Nueva versión de clasificación de los suelos de Cuba. Instituto de Suelos.

  14. 19 CFR 146.33 - Temporary deposit for manipulation.

    Science.gov (United States)

    2010-04-01

    ... 19 Customs Duties 2 2010-04-01 2010-04-01 false Temporary deposit for manipulation. 146.33 Section 146.33 Customs Duties U.S. CUSTOMS AND BORDER PROTECTION, DEPARTMENT OF HOMELAND SECURITY; DEPARTMENT... deposit for manipulation. Imported merchandise for which an entry has been made and which has remained in...

  15. Understanding the development of temporary agency work in Europe

    NARCIS (Netherlands)

    B.A.S. Koene (Bas); J. Paauwe (Jaap); J.P.M. Groenewegen (John)

    2004-01-01

    textabstractThis article develops an explanatory framework for understanding the growth and development of temporary agency work (TAW) and the related industry. The analysis shows that explanations based on economic logic are helpful in understanding the choice of TAW in general. These explanations,

  16. Distribution, Density and Diversity of Dipterans in a Temporary Pond ...

    African Journals Online (AJOL)

    Some aspects of the ecology of Diptera were studied in a temporary pond in Okomu Forest Reserve, southern Nigeria between January 1988 and December 1989. Twenty six morphologically distinct taxa were identified, of which 14 were chironomids. The dominant taxa were Polypedilum (43%), Alluaudomyia (21%), Culex ...

  17. Training "Expendable" Workers: Temporary Foreign Workers in Nursing

    Science.gov (United States)

    Taylor, Alison; Foster, Jason; Cambre, Carolina

    2012-01-01

    The purpose of this article is to explore the experiences of Temporary Foreign Workers in health care in Alberta, Canada. In 2007-2008, one of the regional health authorities in the province responded to a shortage of workers by recruiting 510 health-care workers internationally; most were trained as Registered Nurses (RNs) in the Philippines.…

  18. 41 CFR 101-1.103 - FPMR temporary regulations.

    Science.gov (United States)

    2010-07-01

    ... 41 Public Contracts and Property Management 2 2010-07-01 2010-07-01 true FPMR temporary regulations. 101-1.103 Section 101-1.103 Public Contracts and Property Management Federal Property Management Regulations System FEDERAL PROPERTY MANAGEMENT REGULATIONS GENERAL 1-INTRODUCTION 1.1-Regulation System § 101...

  19. Temporary Anorgasmia Following Uterine Artery Embolization for Symptomatic Uterine Fibroids.

    Science.gov (United States)

    Speir, Ethan; Shekhani, Haris; Peters, Gail

    2017-11-01

    We report a rare case of temporary anorgasmia following uterine artery embolization (UAE) performed for symptomatic uterine fibroids. To our knowledge, this is only the second time that this complication has been reported in the literature. We briefly explore the possible pathophysiologic explanations for this complication and review the effects of UAE compared to hysterectomy on sexual functioning in women.

  20. Difficulty Processing Temporary Syntactic Ambiguities in Lewy Body Spectrum Disorder

    Science.gov (United States)

    Grossman, Murray; Gross, Rachel G.; Moore, Peachie; Dreyfuss, Michael; McMillan, Corey T.; Cook, Philip A.; Ash, Sherry; Siderowf, Andrew

    2012-01-01

    While grammatical aspects of language are preserved, executive deficits are prominent in Lewy body spectrum disorder (LBSD), including Parkinson's disease (PD), Parkinson's dementia (PDD) and dementia with Lewy bodies (DLB). We examined executive control during sentence processing in LBSD by assessing temporary structural ambiguities. Using an…

  1. 47 CFR 78.33 - Special temporary authority.

    Science.gov (United States)

    2010-10-01

    ... 47 Telecommunication 4 2010-10-01 2010-10-01 false Special temporary authority. 78.33 Section 78.33 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) BROADCAST RADIO SERVICES CABLE... with § 78.18: Provided, however, That in the case of events of widespread interest and importance that...

  2. 76 FR 68192 - Temporary Certification Program; Notice of Extension

    Science.gov (United States)

    2011-11-03

    ... of Certified EHR Technology for EPs and hospitals that seek to achieve meaningful use and participate... Extension AGENCY: Office of the National Coordinator for Health Information Technology, HHS. ACTION: Notice... Technology (the National Coordinator) to extend the Temporary Certification Program. Authority: Section 3001...

  3. Physical performance deterioration of temporary housing residents after the Great East Japan Earthquake

    Directory of Open Access Journals (Sweden)

    Takeaki Ishii

    2015-01-01

    We revealed that standing stability was impaired among elderly temporary housing residents 1.5 years after the disaster. Disaster responders should take into account the health risks associated with living in temporary housing.

  4. Maintaining placement of temporary enteral feeding tubes in adults: a critical appraisal of the evidence.

    Science.gov (United States)

    Stepter, Catherine R

    2012-01-01

    Maintaining placement of temporary enteral feeding tubes requires ongoing bedside nursing assessment. Tube placement verification is essential to detect and minimize adverse effects. A critical appraisal of current evidence and best practice recommendations regarding temporary feeding tubes is provided.

  5. Communities of belonging in the temporariness of the Danish Asylum System: Shalini’s anchoring points

    DEFF Research Database (Denmark)

    Verdasco, Andrea

    2018-01-01

    Refugees often find themselves in a protracted situation of temporariness, as applications for asylum are processed, deportations negotiated and possible extensions of temporary protection status considered within the context of increasingly restrictive governmental policies across Europe. Through...

  6. Diatom-based models for inferring water chemistry and hydrology in temporary depressional wetlands

    CSIR Research Space (South Africa)

    Riato, L

    2017-08-01

    Full Text Available Information on the response of temporary depressional wetland diatoms to human-induced disturbances is a limited and important component for the development of temporary wetland biological assessments in human-modified landscapes. Establishing a...

  7. 5 CFR 890.1105 - Initial election of temporary continuation of coverage; application time limitations and...

    Science.gov (United States)

    2010-01-01

    ... (ii) The date of the divorce or annulment. (e) If an individual who is eligible for temporary... determines that an eligible individual was unable, for cause beyond his or her control, to elect temporary...

  8. Reducing bias in survival under non-random temporary emigration

    Science.gov (United States)

    Peñaloza, Claudia L.; Kendall, William L.; Langtimm, Catherine Ann

    2014-01-01

    Despite intensive monitoring, temporary emigration from the sampling area can induce bias severe enough for managers to discard life-history parameter estimates toward the terminus of the times series (terminal bias). Under random temporary emigration unbiased parameters can be estimated with CJS models. However, unmodeled Markovian temporary emigration causes bias in parameter estimates and an unobservable state is required to model this type of emigration. The robust design is most flexible when modeling temporary emigration, and partial solutions to mitigate bias have been identified, nonetheless there are conditions were terminal bias prevails. Long-lived species with high adult survival and highly variable non-random temporary emigration present terminal bias in survival estimates, despite being modeled with the robust design and suggested constraints. Because this bias is due to uncertainty about the fate of individuals that are undetected toward the end of the time series, solutions should involve using additional information on survival status or location of these individuals at that time. Using simulation, we evaluated the performance of models that jointly analyze robust design data and an additional source of ancillary data (predictive covariate on temporary emigration, telemetry, dead recovery, or auxiliary resightings) in reducing terminal bias in survival estimates. The auxiliary resighting and predictive covariate models reduced terminal bias the most. Additional telemetry data was effective at reducing terminal bias only when individuals were tracked for a minimum of two years. High adult survival of long-lived species made the joint model with recovery data ineffective at reducing terminal bias because of small-sample bias. The naïve constraint model (last and penultimate temporary emigration parameters made equal), was the least efficient, though still able to reduce terminal bias when compared to an unconstrained model. Joint analysis of several

  9. Temporary Losses of Highway Capacity and Impacts on Performance

    Energy Technology Data Exchange (ETDEWEB)

    Chin, S.M.

    2002-07-31

    Traffic congestion and its impacts significantly affect the nation's economic performance and the public's quality of life. In most urban areas, travel demand routinely exceeds highway capacity during peak periods. In addition, events such as crashes, vehicle breakdowns, work zones, adverse weather, and suboptimal signal timing cause temporary capacity losses, often worsening the conditions on already congested highway networks. The impacts of these temporary capacity losses include delay, reduced mobility, and reduced reliability of the highway system. They can also cause drivers to re-route or reschedule trips. Prior to this study, no nationwide estimates of temporary losses of highway capacity had been made by type of capacity-reducing event. Such information is vital to formulating sound public policies for the highway infrastructure and its operation. This study is an initial attempt to provide nationwide estimates of the capacity losses and delay caused by temporary capacity-reducing events. The objective of this study was to develop and implement methods for producing national-level estimates of the loss of capacity on the nation's highway facilities due to temporary phenomena as well as estimates of the impacts of such losses. The estimates produced by this study roughly indicate the magnitude of problems that are likely be addressed by the Congress during the next re-authorization of the Surface Transportation Programs. The scope of the study includes all urban and rural freeways and principal arterials in the nation's highway system for 1999. Specifically, this study attempts to quantify the extent of temporary capacity losses due to crashes, breakdowns, work zones, weather, and sub-optimal signal timing. These events can cause impacts such as capacity reduction, delays, trip rescheduling, rerouting, reduced mobility, and reduced reliability. This study focuses on the reduction of capacity and resulting delays caused by the temporary

  10. Industrial production and temporary development after the Emilian Earthquake.

    Directory of Open Access Journals (Sweden)

    Matteo Scamporrino

    2014-02-01

    Full Text Available The earthquake that on the 20th of May hit Emilia has not been one of the most disastrous in modern Italian history, but it has highlighted the problem of preservation of industrial activities during a reconstruction process. In addition, precisely this system, characterized by great vitality and productivity but also by large seismic vulnerability, was the most affected. Through an analysis of the damages suffered by the industrial facilities, not so much as single buildings but precisely as a system, we want to highlight the challenges imposed by the earthquake: on the one hand, the urgent need to provide for delocalizations and temporary structures to avoid a stop in production in the short­term, and on the other, the re­design and anti­seismic re­planning of productive areas. A proposal was put forward to create temporary zones adjacent to the damaged areas, on which temporary structures should be installed. The latter would allow to limit relocations of medium­long range, which are negative for the territory, and at the same time it would allow the flexibility necessary to re­organize the supply chains. However, in Italy, the management of temporary solutions is seen as a practice too much linked to the emergency and too little to the reconstruction process. The first measures put into place by both the State and the Regions, however, do not seem to show a true understanding of the importance of management and regulations of temporary solutions in the medium­ long term.

  11. 76 FR 37147 - Notice of Temporary Closures and Temporary Restrictions on Specific Uses of Public Lands in...

    Science.gov (United States)

    2011-06-24

    ... otherwise introducing into the human body a controlled substance in violation of any State or Federal law... closures and temporary restrictions will be in effect from August 1, 2011 through September 19, 2011 and... craft previously approved by the BLM authorized officer. B. Alcohol 1. Possession of an open container...

  12. 33 CFR 74.01-15 - Charges for placement of temporary aids.

    Science.gov (United States)

    2010-07-01

    ... temporary aids. 74.01-15 Section 74.01-15 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY AIDS TO NAVIGATION CHARGES FOR COAST GUARD AIDS TO NAVIGATION WORK Charges to the Public § 74.01-15 Charges for placement of temporary aids. Charges for placement of temporary aids will be...

  13. 29 CFR 4.176 - Payment of fringe benefits to temporary and part-time employees.

    Science.gov (United States)

    2010-07-01

    ... 29 Labor 1 2010-07-01 2010-07-01 true Payment of fringe benefits to temporary and part-time... to temporary and part-time employees. (a) As set forth in § 4.165(a)(2), the Act makes no distinction, with respect to its compensation provisions, between temporary, part-time, and full-time employees...

  14. Temporary work and health and well-being : a two-way street?

    NARCIS (Netherlands)

    Wagenaar, A.F.

    2013-01-01

    Since the mid-1980s there has been a remarkable growth in the share of temporary workers across the European Union. To date, this employer-initiated trend to become more flexible and cost-effective has resulted in over 25 million European temporary workers. As temporary employment is often not

  15. Temporary Contracts: Effect on Job Satisfaction and Personal Lives of Recent Phd Graduates

    Science.gov (United States)

    Waaijer, Cathelijn J. F.; Belder, Rosalie; Sonneveld, Hans; van Bochove, Cornelis A.; van der Weijden, Inge C. M.

    2017-01-01

    In this study, we assess the effects of temporary employment on job satisfaction and the personal lives of recent PhD graduates. Temporary employment is becoming increasingly prevalent in many sectors, but has been relatively common in academia, especially for early career scientists. Labor market theory shows temporary employment to have a…

  16. Effects of surface conditioning on the shear bond strength of orthodontic brackets bonded to temporary polycarbonate crowns.

    Science.gov (United States)

    Blakey, Rondell; Mah, James

    2010-07-01

    An increase in the number of adults seeking orthodontic treatment has given rise to new problems for orthodontists, one of which is the need to bond orthodontic brackets to teeth restored with temporary crowns. Many prefabricated temporary crowns are composed of polycarbonates or thermoplastic polymers; bonding to these surfaces is complex because of the composition, surface integrity, and resistance of the crowns. The bond must be sufficient to resist breakage from the forces of orthodontic biomechanics and oral functions including mastication. The purpose of this study was to test, in vitro, the effect of different surface treatments on the shear bond strength of metal and ceramic orthodontic brackets bonded to temporary polycarbonate crowns. Eighty polycarbonate crowns for the maxillary right central incisor were evenly divided into 4 groups, and the facial surfaces were subjected to one of the following conditions: group A (control): no treatment; group B: the surface was sandblasted with 50 mum aluminum oxide particles; group C: the glazed surface was removed with a diamond bur; and group D: the surface was etched with 9.6% hydrofluoric acid. Precoated Victory metal brackets (3M Unitek, Monrovia, Calif) were bonded to the facial surface of half (n = 10) of the polycarbonate crowns in each group, and precoated Clarity ceramic brackets (3M Unitek) were bonded to the facial surface of the other half (n = 10). Each was debonded with a shear load in a universal testing machine at a crosshead speed of 0.254 mm per minute, and the adhesive remnant index (ARI) was used to analyze the sites of bond failure. Analysis of variance (ANOVA), post-hoc t test with the Bonferroni adjustment, Student t test, and chi-square test with the Yates correction were used for statistical analysis. There was a significant difference between group B (sandblasting) and all other ceramic and metal groups. In the metal groups, there was a slight difference between group C (diamond bur) and

  17. Metal-metal-hofteproteser

    DEFF Research Database (Denmark)

    Ulrich, Michael; Overgaard, Søren; Penny, Jeannette

    2014-01-01

    In Denmark 4,456 metal-on-metal (MoM) hip prostheses have been implanted. Evidence demonstrates that some patients develope adverse biological reactions causing failures of MoM hip arthroplasty. Some reactions might be systemic. Failure rates are associated with the type and the design of the Mo...

  18. Temporary Agency Workers—Precarious Workers? Perceived Job Security and Employability for Temporary Agency Workers and Client Organization Employees at a Swedish Manufacturing Plant

    Directory of Open Access Journals (Sweden)

    Kristina Håkansson

    2015-12-01

    Full Text Available The vulnerable situation of temporary agency workers is manifested in previous research that evidences the job insecurity of this group. However, research shows that this insecurity is due to the temporary nature of employment contracts for this group of workers. In Sweden, where temporary agency workers have the same type of employment contracts (i.e., temporary or permanent contracts and are entitled to the same employment protection as other groups of employees, one might expect a different picture. This article examines the situation of temporary agency workers who have the same working conditions as client organization employees. These workers have permanent contracts and are treated like client organization employees. We have chosen to examine this case because we anticipate it to be very likely to contradict statements regarding temporary agency workers’ affiliation with the precariat. This article aims to empirically elucidate the precariousness of temporary agency workers who are highly integrated with client organization employees and who share the same work tasks. Our analysis shows that competence development is crucial to perceptions of job security. However, temporary agency workers lack competence development, both on the part of the employer (the temporary work agency and on the part of the client organization. The client organization has no incentive to invest more than the required competencies, since temporary agency workers only constitute a buffer in case of a downturn. We argue that it is the agency workers’ connection with a buffer that results in a lack of job security. Our results also show that temporary agency workers’ job security could be increased if temporary agencies were to invest in competence development for the agency workers, thus overcoming these workers’ vulnerability in constituting a buffer.

  19. Metallated metal-organic frameworks

    Energy Technology Data Exchange (ETDEWEB)

    Bury, Wojciech; Farha, Omar K.; Hupp, Joseph T.; Mondloch, Joseph E.

    2017-08-22

    Porous metal-organic frameworks (MOFs) and metallated porous MOFs are provided. Also provided are methods of metallating porous MOFs using atomic layer deposition and methods of using the metallated MOFs as catalysts and in remediation applications.

  20. Metallated metal-organic frameworks

    Science.gov (United States)

    Bury, Wojciech; Farha, Omar K.; Hupp, Joseph T.; Mondloch, Joseph E.

    2017-02-07

    Porous metal-organic frameworks (MOFs) and metallated porous MOFs are provided. Also provided are methods of metallating porous MOFs using atomic layer deposition and methods of using the metallated MOFs as catalysts and in remediation applications.

  1. Intraureteral metallic endoprosthesis in the treatment of ureteral strictures

    Energy Technology Data Exchange (ETDEWEB)

    Daskalopoulos, George; Hatzidakis, Adam; Triantafyllou, Theodosis; Delakas, Dimitrios; Anezinis, Ploutarchos; Metaxari, Maria; Cranidis, Angelos

    2001-09-01

    Objective: We report our experience on intraureteral metallic stents placement for the treatment of malignant and benign ureteral strictures. Methods: Eight patients (six men and two women) with inoperable malignant or benign ureteral strictures, underwent insertion of metallic stents through percutaneous tracts. Six lesions (three malignant, three benign) involved ureterointestinal anastomoses after cystectomy for bladder cancer and ureteroileal urinary diversion or bladder substitution, and two malignant lesions involved the midureter. Self-expandable stents were used in seven cases and a balloon-expandable stent in the remaining one case. One stent was sufficient in seven ureters, and in one ureter, two overlapping stents were placed. Results: Metallic stents were inserted without technical difficulties in all obstructed ureters and patency was achieved in all patients. Ultrasonography revealed resolution of pre-existing hydronephrosis. The duration of follow-up was 6-17 months (mean, 9 months). One ureter was occluded 8 months after stent placement because of ingrowth of tumor and granulation tissue. The other ureters showed no signs of obstruction during follow-up. No major complications directly attributable to the metallic stent occurred. Conclusions: Our results suggest that insertion of a metallic stent in the ureter is feasible and safe for the treatment of benign or malignant ureteral strictures. However, more work needs to be done to establish the use of these stents for the treatment of ureteral obstruction.

  2. Need for relevant timescales when crediting temporary carbon storage

    DEFF Research Database (Denmark)

    Jørgensen, Susanne Vedel; Hauschild, Michael Zwicky

    2013-01-01

    Purpose: Earth faces an urgent need for climate change mitigation, and carbon storage is discussed as an option. Approaches for assessing the benefit of temporary carbon storage in relation to carbon footprinting exist, but many are based on a 100-year accounting period, disregarding impacts after...... carbon storage in carbon footprinting. Methods: Implications of using a 100-year accounting period is evaluated via a literature review study of the global carbon cycle, as well as by analysing the crediting approaches that are exemplified by the PAS 2050 scheme for crediting temporary carbon storage....... Results and discussion: The global carbon cycle shows timescales of thousands of years for the transport of carbon from the atmosphere to pools beyond the near-surface layers of the Earth, from where it will not readily be re-emitted as a response to change in near-surface conditions. Compared...

  3. Temporary alopecia after embolization of an arteriovenous malformation.

    Science.gov (United States)

    López, Verónica; López, Inmaculada; Ricart, José M

    2012-09-15

    Alopecia after head and neck radiotherapy has been extensively reported in the literature. However, alopecia after endovascular procedures is seldom reported in the dermatological literature. Prolonged fluoroscopic imaging during these procedures may cause serious radiation injuries to the skin, such as dermatitis or alopecia. Radiation-induced temporary alopecia is a peculiar form of radiodermitis that occurs over the areas of the scalp that receive the highest doses of radiation. Although repopulation of alopecic patches occurs spontaneously without treatment, it is important to recognize this disorder to establish a correct diagnosis and inform patients about this transient side effect. We report a 44-year-old woman presenting with temporary alopecia after embolization of an arteriovenous malformation.

  4. Impact of a temporary stoma on patients' everyday lives

    DEFF Research Database (Denmark)

    Danielsen, Anne K; Soerensen, Erik E; Burcharth, Kirsten

    2013-01-01

    -focused coping strategies. These strategies may be supported when patients have a high sense of coherence. Furthermore, patients' disclosure of the stoma as a way to master feelings of stigma should be facilitated. Stoma education is central for patients, and group-based learning that involves lay educators...... perspective. METHODS: Data were processed using qualitative content analysis. RESULTS: The creation of a temporary stoma led to feelings of uncertainty related to being in an undecided situation. Stoma creation led to feelings of stigma and worries about disclosure. Patients proposed group-based patient...... education with lay educators with a stoma to make sure that information about the stoma was based on real-life experiences. CONCLUSIONS: Creation of a temporary stoma was linked to uncontrollable feelings of uncertainty. Professionals should assist patients with focus on coping strategies...

  5. Self-erecting temporary shelter: Kinetic Design and Vacuumatics

    Directory of Open Access Journals (Sweden)

    Vincenzo Sapienza

    2014-05-01

    Full Text Available SETS (Self-Erecting Temporary Shelter is a project born to realize a temporary, flexible, lightweight, experimental pavilion. It is a synthesis between the ancient origami’s art and the innovative vacuumatics. So SETS is able to switch from two-dimensional configuration, for transportation and storage, to the spatial one, adaptable to several uses (from fashion shows to emergencies. To achieve this goal SETS is based on two qualifying items: a strong geometric control, due to the parametric design tool, and the vacuum technology, that is able to ‘freeze’ it into the chosen configuration. In this article the authors will describe the topics of the first steps of the research, that allowed them to make some physic model in scale. They will also show the program of the following phases, that are addressed to the building of a prototype.

  6. Temporary Life Changes and the Timing of Divorce.

    Science.gov (United States)

    Fallesen, Peter; Breen, Richard

    2016-10-01

    Marriage is a risky undertaking that people enter with incomplete information about their partner and their future life circumstances. A large literature has shown how new information gained from unforeseen but long-lasting or permanent changes in life circumstances may trigger a divorce. We extend this literature by considering how information gained from a temporary change in life circumstances-in our case, a couple having a child with infantile colic-may affect divorce behavior. Although persistent life changes are known to induce divorce, we argue that a temporary stressful situation allows couples more quickly to discern the quality of their relationship, in some cases leading them to divorce sooner than they otherwise would have. We formalize this argument in a model of Bayesian updating and test it using data from Denmark. We find that the incidence of infantile colic shortens the time to divorce or disruption among couples who would have split up anyway.

  7. THE MORBIDITY WITH TEMPORARY DISABILITY OF WORKING MILITARY RETIREES

    Directory of Open Access Journals (Sweden)

    A. V. Popov

    2017-01-01

    Full Text Available The purpose of the study. The study of morbidity with temporary disability of working officers of the Navy, retired and resigned, as well as affecting the level of certain factors.Materials and methods. A sociological survey of 574 officers of the Navy, who were dismissed from the Armed Forces to the reserve (resignation, was held. 32.7% of them at the time of the survey have been working.Results. 48.8% of respondents rated their health at the time of the survey as a good for their age. The level of morbidity with temporary disability (MWTD in 100 operating reserve (retired officers amounted to 94 cases. The number of days of temporary disability was equal to 867 days per 100 employed military pensioners. Most long-term treatment (up to 47 days were required for patients with blood diseases. Analysis of the structure of diseases of reserve (retired officers leading to temporary disability, showed that the bulk of the cases (63.7 per cent were diseases of the respiratory organs, in second place were diseases of the circulatory system (24,5%, the third — diseases of the genitourinary system (4.3%. The average number of existing diseases to working military retirees less than idle: 1.9 vs 2.1. The average number of diseases at the single soldiers discharged was significantly more than that of living in family.Conclusion. The features of level and structure, as well as risk factors of MWTD should be considered in the development and adoption of administrative decisions directed on preservation and strengthening of health of reserve (retired officers. 

  8. Temporary and circular labour migration and codevelpment: a case estudy

    OpenAIRE

    Elena Sánchez-Montijano; Rocío Faúndez García

    2012-01-01

    The search for new ways to manage international migration is one of the main topics at the current political agendas. Within this framework, Temporary and Circular Labour Migration (TCLM) as a way of fl ow management on the one hand, and co-development as a set of actions that seek to articulate migration and development on the other, have recently been promoted as double win situations. Both initiatives depart from the assumption that migrants can make important contributions to development,...

  9. Temporary anchorage device usage: a survey among Swiss orthodontists.

    OpenAIRE

    Markic, Goran; Katsaros, Christos; Pandis, Nikolaos; Eliades, Theodore

    2014-01-01

    BACKGROUND The aim of the survey was to obtain information on the treatment plan preferences, mechanics and characteristics of temporary anchorage device (TAD) application using a single case presented to orthodontists in Switzerland. METHODS A structured questionnaire to be completed by all study participants with case-specific (treatment plan including mechanics and TAD usage) and general questions (general fixed appliance and TAD usage as well as professional, educational and d...

  10. Nursing procedure in the temporary transvenous pacemaker implantation

    Directory of Open Access Journals (Sweden)

    Mª Teresa Redecillas Peiró

    2013-05-01

    Full Text Available The temporary transvenous pacemaker (MPTT implantation is a technique that consists in stimulating artificially the heart when the natural pacemaker is unable to maintain the rhythm and the appropiate frequency. This type of electric stimulation is carried out by means of an electrocateter that was implanted in the endocardium through a central vein connected to an external generator, requiring equipment and personal with specific abilities. It is commonly carried out in the intensive care units when a continuous temporary stimulation is suitable and in most cases it is carried out in situations of extreme medical urgency in critical and unstable patients. The nursing professionals play an important role in the whole procedure, becoming essential that they possess knowledge not only about technique and handling of the device but also on the performance in all its phases. This research work intends to be a practical reference that gathers those essential aspects for the development of this assistance practice including, in a detailed way, the nursing performance in the preparation, the implantation and the pursuit of the patients who a temporary transvenous pacemaker was placed in.

  11. The Diaspora and Temporary Migrant Workers: Basic Concepts

    Directory of Open Access Journals (Sweden)

    Marija Krstić

    2016-02-01

    Full Text Available The paper looks at the phenomenon of migrant workers who emigrated to Western European countries after World War II. The labor demands created by the economic reconstruction of these countries, most notably Great Britain, West Germany, France, Switzerland, the Benelux countries, Sweden and Austria, coupled with low birth rates and high death rates, made it necessary for them to hire immigrant workers. On the other hand, poor economic conditions, few employment opportunities and a yearning for a higher standard of living drove workers from Italy, Spain, Portugal, Turkey, Yugoslavia, Greece, Ireland, Finland and North Africa to seek work abroad. These temporary migrant workers represent a link between their countries of origin and their host countries, and, as a group of people maintaining links with their native countries, they can also be considered their countries’ diaspora. However, considering the temporary nature of their residence abroad, it is questionable whether they actually are a diaspora. It is for this reason that the paper juxtaposes the phenomena of the diaspora and temporary migrant workers in order to analyze the question of whether, when and how these workers become a diaspora. In particular, it focuses on migrant workers from Yugoslavia, usually referred to as “gastarbajteri” (gastarbeiter, who in the 1960s and 1970s migrated mostly to West Germany, Austria, Australia, France and Switzerland, and on their political treatment by the Yugoslav state.

  12. Permanent versus temporary restorations after emergency pulpotomies in primary molars.

    Science.gov (United States)

    Guelmann, Marcio; Fair, Jodi; Bimstein, Enrique

    2005-01-01

    The purpose of this retrospective study was to determine if immediate placement of a stainless steel crown (SSC) after emergency pulpotomies in primary molars would result in a better outcome when compared to different temporary restorations. Records of 94 emergency pulpotomies in primary molars performed at a university pediatric graduate dental clinic between July 2001 and June 2004 were analyzed. Inclusion criteria included: (1) teeth with a positive history of spontaneous or elicited pain; (2) deep caries with close approximation to the pulp; (3) absence of clinical and radiographic signs of pulpal degeneration; (4) abnormal mobility; or (5) swelling. Pulpotomized teeth were temporarily restored with a zinc oxide eugenol-based temporary restoration (IRM) covered with Ketac Molar or with a permanent restoration (SSC). The time interval between emergency and definitive treatment or recall, age, gender, tooth type, and arch were the variables analyzed in the study. Success was determined by record (progress notes and radiographs) verification of SSC placement in case of a temporary restoration and by confirmation of crown presence during recall exam. Data from emergency pulpotomies restored only with IRM was added to the study and included in the statistical analysis. Superior clinical success was obtained when emergency pulpotomies were restored with SSC (86%) when compared to IRM only (61%) or IRM and Ketac Molar combined (77%). Statistical significance was obtained in favor of SSC when survival analysis was performed (P.05). Immediate placement of an SSC tended to improve the chances for success when emergency pulpotomies are performed.

  13. Self-Expanding, Tough Biodegradable Elastomers for Wound Stasis

    Science.gov (United States)

    2015-08-06

    results were incon- clusive in mixed (arterial and venous)17 and arterial bleed- ing.18,19 Likewise, QuikClot Zeolite granules were effective in venous...177Y182. 17. Alam HB, Chen Z, Jaskille A, et al. Application of a zeolite hemostatic agent achieves 100% survival in a lethal model of complex groin...but did not penetrate internally, consistent with its hydrophobic proper- ties.7 The maximum IAP was dose dependent, with larger doses of foam leading

  14. 78 FR 69707 - Notice of Temporary Closure to Recreational and Target Shooting on Public Lands at Hartman Rocks...

    Science.gov (United States)

    2013-11-20

    ... Bureau of Land Management Notice of Temporary Closure to Recreational and Target Shooting on Public Lands... Temporary Closure. SUMMARY: Notice is hereby given that a temporary closure to Recreational Shooting is in...: This temporary closure to recreational shooting affects public lands at Hartman Rocks Recreation Area...

  15. Management of empyema of gallbladder with percutaneous cholecysto-duodenal stenting in a case of hilar cholangiocarcinoma treated with common bile duct metallic stenting

    Directory of Open Access Journals (Sweden)

    Sheo Kumar

    2011-01-01

    Full Text Available Empyema of the gallbladder develops when the gallbladder neck is obstructed in the presence of infection, preventing pus from draining via the cystic duct. Treatment options include cholecystectomy or, in patients with comorbidities, drainage via percutaneous cholecystostomy, later followed by cholecystectomy. Here, we describe a 59-year-old man who presented with complaints of recurrent hiccups and was found to have cholangiocarcinoma causing obstruction to cystic duct drainage. The patient was managed successfully by percutaneous transhepatic cholecysto-duodenal self-expandable covered metal stent.

  16. Schedules of Controlled Substances: Temporary Placement of ortho-Fluorofentanyl, Tetrahydrofuranyl Fentanyl, and Methoxyacetyl Fentanyl Into Schedule I. Temporary amendment; temporary scheduling order.

    Science.gov (United States)

    2017-10-26

    The Administrator of the Drug Enforcement Administration is issuing this temporary scheduling order to schedule the synthetic opioids, N-(2-fluorophenyl)-N-(1-phenethylpiperidin-4-yl)propionamide (ortho-fluorofentanyl or 2-fluorofentanyl), N-(1-phenethylpiperidin-4-yl)-N-phenyltetrahydrofuran-2-carboxamide (tetrahydrofuranyl fentanyl), and 2-methoxy-N-(1-phenethylpiperidin-4-yl)-N-phenylacetamide (methoxyacetyl fentanyl), into Schedule I. This action is based on a finding by the Administrator that the placement of ortho-fluorofentanyl, tetrahydrofuranyl fentanyl, and methoxyacetyl fentanyl into Schedule I of the Controlled Substances Act is necessary to avoid an imminent hazard to the public safety. As a result of this order, the regulatory controls and administrative, civil, and criminal sanctions applicable to Schedule I controlled substances will be imposed on persons who handle (manufacture, distribute, reverse distribute, import, export, engage in research, conduct instructional activities or chemical analysis, or possess), or propose to handle, ortho-fluorofentanyl, tetrahydrofuranyl fentanyl, and methoxyacetyl fentanyl.

  17. Acceptance of orthodontic miniscrews as temporary anchorage devices

    Directory of Open Access Journals (Sweden)

    Zawawi KH

    2014-06-01

    Full Text Available Khalid H Zawawi Department of Orthodontics, Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia Objective: To study the patient’s acceptance, expectation, and experience of pain with ­orthodontic temporary miniscrews. Methods: Questionnaires were distributed to 165 potential temporary orthodontic miniscrew recipients or their parents. Using the numeric rating scale, patients who received miniscrews as part of their orthodontic treatment were also asked to rate the pain or discomfort experience after miniscrew placement.Results: A total of 165 subjects completed the first set of questions. There was a significant relationship between level of education and prior knowledge about orthodontic miniscrews (P=0.029. Even though only 12.7% had heard about miniscrews, 82.4% agreed to have miniscrews placed to facilitate orthodontic tooth movement. Eighty-three subjects who needed miniscrews as part of their orthodontic treatment completed two more sets of questions after 6 and 24 hours of miniscrew insertion. After 6 hours of miniscrew insertion, there was a significant difference in pain perception between men (mean =2.6±2.2 and women (mean =2.1±1.5; P=0.03. After 24 hours, there was no difference between men (0.2±0.4 and women (0.2±0.5; P>0.05. Postplacement, 32.5% did not require any pain medication, while 59.1% required a single dose and only 8.4% required two doses. A total of 76 patients (91.6% said that they would recommend this procedure.Conclusion: Patients do accept miniscrew as a treatment option in orthodontics. Postoperative pain is significantly low. The acceptance of miniscrews was not related to patient’s previous knowledge of the device, and patients preferred miniscrews to extractions. Keywords: orthodontic treatment, miniscrew, temporary anchorage device, patient acceptance

  18. In vitro Analysis of Cytotoxicity of Temporary Resilient Relining Materials.

    Science.gov (United States)

    Caldas, Isleine P; Scelza, Miriam Z; Gallito, Marco A; Alves, Gutemberg; Silva, Licínio

    2016-06-01

    The aim of this study is to evaluate the in vitro response of human gingival fibroblasts in primary cultures to two materials for temporary relining of dentures: Temporary Soft (TDV, Brazil) and Trusoft (Bosworth, USA) for 24 hours, 7 and 30 days by using a multi-parametric analysis. Each material sample (TDV, TS, Polystyrene, Latex) was prepared and incubated in a culture medium for 1, 7, and 30 days at 37°C. Human gingival fibroblasts were exposed to the extracts and cell viability was evaluated by a multi-parametric assay, which allowed sequential analysis of mitochondrial activity (XTT), membrane integrity [neutral red (NR)], and cell density [crystal violet dye exclusion (CVDE)] in the same cells. Analysis of variance (ANOVA) was used to test the interactions of the three sources of variation (material, test method, and time) with the proportions of viable cells for each relining material. Both evaluated materials (TDV and TS) had low cytotoxic effects during 1, 7, and 30 days after manipulation of the material, as assessed by all three methods used. A statistical difference was found when comparing the negative control group (latex fragments) with the other groups, which showed high toxicity and low percentage of cell viability in all tests used. There was no significant difference among other materials (p > 0.05). Low cytotoxicity levels were detected by representatives of the major groups of temporary prosthetic relining materials, as evaluated by multiple cellular viability parameters in human fibroblasts. There are various soft materials on the market for relining prostheses; however, the effects of these materials on tissues need to be clarified to avoid problems for patients.

  19. Early closure of temporary ileostomy--the EASY trial

    DEFF Research Database (Denmark)

    Danielsen, Anne Kjaergaard; Correa-Marinez, Adiela; Angenete, Eva

    2011-01-01

    ), a randomised controlled trial, is a prospective randomised controlled multicentre study which is performed within the framework of the Scandinavian Surgical Outcomes Research Group (http://www.ssorg.net/) and plans to include 200 patients from Danish and Swedish hospitals. The primary end-point of the study......;months after surgery (stoma creation). Discussion The aim of the EASY trial is to evaluate the efficiency of early reversal of temporary ileostomy after surgery for rectal cancer versus late reversal. The EASY trial is expected to have a huge impact on patient safety as well as an improvement in patient......-reported outcome. Clinical trials identifier NCT01287637....

  20. On the role of temporary storage in interactive evolution

    DEFF Research Database (Denmark)

    Dahlstedt, Palle

    2009-01-01

    In typical implementations of interactive evolution of aesthetic material, population size and generation count are limited due to the time-consuming manual evaluation process. We show how a simple device can help to compensate for this, and help to enhance the functionality of interactive...... evolution. A temporary storage, defined as a number of easily accessed memory locations for evolved objects, adjacent to the evolving population, can be regarded as a non-evolving extension of the population. If sufficiently integrated into the workflow, it provides compensation for limited genetic...

  1. Institutional Logics in Inter-institutional Temporary Organizations

    DEFF Research Database (Denmark)

    Pemsel, Sofia; Söderlund, Jonas

    -cognitive, normative, and regulative – are unfolding and evolving in such contexts. The case study addresses the integration and disintegration of logics and normative orders in an ongoing process characterized by the co-mingling, co-existence, creation and resolutions of hybrid logics and creation of institutional...... exceptions throughout the life of the studied temporary organization. In that respect, this paper contributes with a more nuanced view on the evolution, dynamics, and co-existence of pressures from multiple institutional demands at the organizational level....

  2. Early closure of temporary ileostomy--the EASY trial

    DEFF Research Database (Denmark)

    Danielsen, Anne Kjaergaard; Correa-Marinez, Adiela; Angenete, Eva

    2011-01-01

    ), a randomised controlled trial, is a prospective randomised controlled multicentre study which is performed within the framework of the Scandinavian Surgical Outcomes Research Group (http://www.ssorg.net/) and plans to include 200 patients from Danish and Swedish hospitals. The primary end-point of the study......;months after surgery (stoma creation). Discussion The aim of the EASY trial is to evaluate the efficiency of early reversal of temporary ileostomy after surgery for rectal cancer versus late reversal. The EASY trial is expected to have a huge impact on patient safety as well as an improvement in patient-reported...

  3. The Challenges Encountered by Immigrant-Serving Agencies in Addressing the Health of Temporary Foreign Workers.

    Science.gov (United States)

    Salami, Bukola; Kirova, Anna; Hegadoren, Kathleen; Meherali, Salima; Chiu, Yvonne; Nsaliwa, Christina

    2016-01-01

    This study sought to examine the challenges encountered by immigrant-serving agencies in meeting the health needs of temporary foreign workers and their families in one Canadian province. The authors interviewed 11 representatives of immigrant-serving agencies and two policy makers. Some of the challenges that agencies face in delivering programs and services for temporary foreign workers and their families include the time required to build trust with this population, temporary foreign workers' reluctance to use services due to fear that it will affect their immigration status, and the emotional labor associated with working with temporary foreign workers.

  4. Tolerance of herbaceous summer legumes of temporary waterlogging

    Directory of Open Access Journals (Sweden)

    Elsa M. Ciotti

    2014-09-01

    Full Text Available A greenhouse study to evaluate adaptation of 4 herbaceous summer legumes to temporary waterlogging was conducted.  Species evaluated were Desmanthus virgatus and Aeschynomene americana in their vegetative stage, and Macroptilium lathyroides and M. atropurpureum in both vegetative and reproductive stages.  The experimental design was randomized blocks with 5 replications and treatments were:  T0, control; T1, saturation by capillary movement placing pots in buckets of 5 L with 10 cm of permanent water; and T2, flooding, placing pots in buckets of 10 L and a layer of water 5 cm above the soil.  The duration of the water treatments was 7 days. Waterlogging did not affect shoot or root biomass production nor nodulation in A. americana, whereas D. virgatus had its highest dry matter production in saturated soil (T1.  In M. lathyroides flooding tolerance was more evident in the reproductive than in the vegetative stage, probably due to more production of adventitious roots and formation of aerenchymatic tissue.  Macroptilium atropurpureum showed adaptation to temporary flooding.  Survival and quick recovery of these species would confirm their potential as forages for temporarily waterlogged soils.Keywords: Forage legumes, flooding, Aeschynomene americana, Desmanthus virgatus, Macroptilium lathyroides, Northeast Argentina.DOI: 10.17138/TGFT(2278-286

  5. Microleakage of different temporary filling materials in primary teeth.

    Science.gov (United States)

    Odabas, Mesut Enes; Tulunoglu, Ozlem; Ozalp, Serife Ozdemir; Bodur, Haluk

    2009-01-01

    The aim of this study was to compare the sealing properties of IRM, Coltosol, Cavit G, Adhesor and Clip, which used as temporary filling material in coronal access openings in extracted human primary teeth. Standardized access cavities of 2 x 2 mm were prepared in the eighty-four, caries-free human primary anterior teeth. The teeth were divided randomly into five groups of 16 teeth each. Temporary restorative materials Group A: IRM (Dentsply), Group B: Coltosol (Coltone), Group C: Cavit G (3M), Group D: Adhesor (Spofa Dental) and Group E: Clip (Voco) were applied according to the manufacturer's directions. The specimens were immersed silver nitrate and placed in film developer under fluorescent for 24 hours. The sectioned specimens were evaluated under a digital microscope at x 20 magnifications and blindly scored for microleakage. Clip presented the least microleakage value whereas; Adhesor and IRM presented the higher microleakage values. There were statistically significant differences between Clip and the others groups, while there were no statistically significant differences in microleakage between IRM, Adhesor, Coltosol and Cavit G. However the leakage scores of Clip and Cavit G were congruent (p = 0.454). Amongst the five materials, Clip exhibited a better sealing ability.

  6. The profound precariousness of work through temporary work agency

    Directory of Open Access Journals (Sweden)

    Mihaela-Emilia Marica

    2016-12-01

    Full Text Available The increase in the number of atypical work contracts in the field of industry relationships, as part of a major European trend towards gaining more flexibility in the labour market, is significant and cannot be overlooked in most member countries of the European Union. This finding is corroborated by the recent surveys conducted across Europe, that reveal the prevalence of these flexible ways of organizing work, over the archetypal template of the individual work contract. However, this range of atypical contractual arrangements and the great number of versions and subcategories they include, are describing a number of negative features that seem to characterize these new forms of employment. Since the field of atypical employment is complex and we cannot analyse the incidence of these negative effects for all the atypical methods of employment, in the following article we will limit ourselves to explore the pressing issues related to the system of temporary work through work agencies. As we shall see, all aspects of the salary field, of health and safety at work and the level of insecurity and instability of labour through temporary work agency reveals a strong character associated with this kind of precarious employment.

  7. Use of temporary nursing staff and nosocomial infections in intensive care units.

    Science.gov (United States)

    Bae, Sung-Heui; Brewer, Carol S; Kelly, Maureen; Spencer, Alexandra

    2015-04-01

    To examine the nature and prevalence of the use of temporary nursing staff in intensive care units and relationships between the use of temporary nursing staff and the occurrence of nosocomial infections (central line-associated blood stream infections and ventilator-associated pneumonia). Hiring temporary nurses raises controversial issues with respect to nurse staffing, care processes and patient outcomes, yet empirical findings regarding the use of temporary nurses are mixed. Whether adverse patient outcomes in intensive care units are related to the use of temporary nursing staff remains unexamined. A retrospective longitudinal design was used. Data were collected monthly from 12 intensive care units at six hospitals; 144 ICU-month data points were used for the analysis. Chi-square, anova and logit regression models were used to examine the research questions. The intensive care units used higher levels of temporary nursing staff, but the use of temporary nursing staff was not significantly associated with nosocomial infections. Nurses' perceptions regarding staffing and resource adequacy were significantly associated with nosocomial infections. No evidence was found to link the use of temporary nursing staff and nosocomial infections. Instead, nurses' perceptions of staffing adequacy were related to nosocomial infections. Given the greater use of temporary nursing staff in intensive care units, nurse managers in intensive care units need to monitor the levels of temporary nurse staffing and develop a systematic approach for hospitals to assist in these nurses' adjustment, which can reduce the burden of both temporary and permanent intensive care unit nurses. In addition to quantitative measures of nurse staffing, nurses' perceptions regarding staffing adequacy can be used to measure nurse staffing in relation to adverse patient outcomes. © 2014 John Wiley & Sons Ltd.

  8. Ripening of clayey dredged sediments during temporary upland disposal, A Bioremediation technique.

    NARCIS (Netherlands)

    Vermeulen, J.; Grotenhuis, J.T.C.; Joziasse, J.; Rulkens, W.H.

    2003-01-01

    Background and Goal. In the Netherlands about 40 million m3 of sediment has to be dredged annually for both maintenance and environmental reasons. Temporary upland disposal is the most widely adopted alternative for dredged sediments worldwide. For good management of temporary disposal sites,

  9. 42 CFR 488.56 - Temporary waivers applicable to skilled nursing facilities.

    Science.gov (United States)

    2010-10-01

    ... 42 Public Health 5 2010-10-01 2010-10-01 false Temporary waivers applicable to skilled nursing... PROCEDURES Special Requirements § 488.56 Temporary waivers applicable to skilled nursing facilities. (a... skilled nursing facility to engage the services of a registered nurse more than 40 hours a week, the...

  10. 26 CFR 1.103(n)-6T - Determinations of population (temporary).

    Science.gov (United States)

    2010-04-01

    ... 26 Internal Revenue 2 2010-04-01 2010-04-01 false Determinations of population (temporary). 1.103....103(n)-6T Determinations of population (temporary). Q-1: What is the proper method for determining population? A-1: All determinations of population must be made with respect to any calendar year on the basis...

  11. Temporary Work in Western Europe: Threat or Complement to Permanent Employment?

    Science.gov (United States)

    Bronstein, A. S.

    1991-01-01

    The rapid postwar rise of temporary employment is outlined, including legitimate and less legitimate manifestations, views of unions and employers, advantages and disadvantages. The legal status of such work in various countries and the problems arising from the triangular relationship between worker, temporary agency, and employer are addressed.…

  12. Temporary Work in Transnational Labor Regulation: SER-Centrism and the Risk of Exacerbating Gendered Precariousness

    Science.gov (United States)

    Vosko, Leah F.

    2008-01-01

    This article explores the transnational regulation of temporary work. Analyzing the terms of the EU "Directive on Fixed-Term Work (1999), the ILO "Convention on Private Employment Agencies" (1997), the ILO "Recommendation on the Employment Relationship" (2006), and a draft EU Directive on "Temporary Agency Work"…

  13. 38 CFR 21.6001 - Temporary vocational training program for certain pension recipients.

    Science.gov (United States)

    2010-07-01

    ... 38 Pensions, Bonuses, and Veterans' Relief 2 2010-07-01 2010-07-01 false Temporary vocational training program for certain pension recipients. 21.6001 Section 21.6001 Pensions, Bonuses, and Veterans... Program of Vocational Training for Certain New Pension Recipients General § 21.6001 Temporary vocational...

  14. 75 FR 6883 - Temporary Agricultural Employment of H-2A Aliens in the United States

    Science.gov (United States)

    2010-02-12

    ... Temporary Agricultural Employment of H-2A Aliens in the United States; Final Rule #0;#0;Federal Register... Temporary Agricultural Employment of H-2A Aliens in the United States AGENCY: Employment and Training... services involved in the petition; and (B) The employment of the alien in such labor or services will not...

  15. 8 CFR 1244.5 - Temporary treatment benefits for eligible aliens.

    Science.gov (United States)

    2010-01-01

    ... 8 Aliens and Nationality 1 2010-01-01 2010-01-01 false Temporary treatment benefits for eligible aliens. 1244.5 Section 1244.5 Aliens and Nationality EXECUTIVE OFFICE FOR IMMIGRATION REVIEW, DEPARTMENT... § 1244.5 Temporary treatment benefits for eligible aliens. (a) Prior to the registration period. Prior to...

  16. 75 FR 383 - Canned Pacific Salmon Deviating From Identity Standard; Extension of Temporary Permit for Market...

    Science.gov (United States)

    2010-01-05

    ..., Drug, and Cosmetic Act (21 U.S.C. 341). The permit covers limited interstate marketing tests of a... optional forms of pack provided in Sec. 161.170(a)(3), this temporary marketing permit provides for an... Fisheries, LLC, requested that its temporary marketing permit be extended to allow for additional time for...

  17. 76 FR 20008 - Notice of Temporary Concession Contract for Assateague Island National Seashore, MD

    Science.gov (United States)

    2011-04-11

    ... merchandise and limited pre-packaged food and beverage. This action is necessary to avoid interruption of... National Park Service Notice of Temporary Concession Contract for Assateague Island National Seashore, MD AGENCY: National Park Service, Interior. ACTION: Notice of proposed award of temporary concession...

  18. 26 CFR 1.923-1T - Temporary regulations; exempt foreign trade income.

    Science.gov (United States)

    2010-04-01

    ... 26 Internal Revenue 10 2010-04-01 2010-04-01 false Temporary regulations; exempt foreign trade... Temporary regulations; exempt foreign trade income. (a) Foreign trade income. Foreign trade income of a FSC... for illustrations of the computation of a FSC's foreign trade income, exempt foreign trade income and...

  19. Temporary contracts : Effect on job satisfaction and personal lives of recent PhD graduates

    NARCIS (Netherlands)

    Waaijer, C.J.F.; Belder, R.; Sonneveld, H.; Van, Bochove C.A.; Van, der Weijden I.C.M.

    2017-01-01

    In this study, we assess the effects of temporary employment on job satisfaction and the personal lives of recent PhD graduates. Temporary employment is becoming increasingly prevalent in many sectors, but has been relatively common in academia, especially for early career scientists. Labor market

  20. 26 CFR 1.410(a)-8T - Year of service; break in service (temporary).

    Science.gov (United States)

    2010-04-01

    ... 26 Internal Revenue 5 2010-04-01 2010-04-01 false Year of service; break in service (temporary). 1...)-8T Year of service; break in service (temporary). (a)-(b) (c) Breaks in service. (1) (2) Employees...-year break in service under a plan which provides that after not more than 2 years of service each...

  1. 77 FR 47915 - Wheego Electric Cars, Inc.; Grant of Petition for Temporary Exemption From the Electronic...

    Science.gov (United States)

    2012-08-10

    ... National Highway Traffic Safety Administration Wheego Electric Cars, Inc.; Grant of Petition for Temporary... Stability Control Systems. SUMMARY: This notice grants the petition of Wheego Electric Cars, Inc. (Wheego... Electric Cars, Inc. (Wheego) submitted a petition dated August 15, 2011 asking the agency for a temporary...

  2. 20 CFR 655.1310 - Validity and scope of temporary labor certifications.

    Science.gov (United States)

    2010-04-01

    ... OF LABOR TEMPORARY EMPLOYMENT OF FOREIGN WORKERS IN THE UNITED STATES Labor Certification Process for Temporary Agricultural Employment in the United States (H-2A Workers) § 655.1310 Validity and scope of... workers, the area of intended employment, the specific occupation and duties, and the employer(s...

  3. Students, Temporary Workers and Co-Op Workers: An Experimental Investigation on Social Preferences

    Directory of Open Access Journals (Sweden)

    Davide Dragone

    2015-05-01

    Full Text Available We conduct an artefactual field experiment to compare the individual preferences and propensity to cooperate of three pools of subjects: Undergraduate students, temporary workers and permanent workers. We find that students are more selfish and contribute less than workers. Temporary and permanent contract workers have similar other-regarding preferences and display analogous contribution patterns in an anonymous Public Good Game.

  4. Assessment of the consequences in premature loss of the temporary lower molars.

    Science.gov (United States)

    Petcu, Ana; Bălan, Adriana; Gavrilă, Laura Maria Vasilca; Savin, Carmen

    2014-01-01

    The consequences of premature loss of temporary teeth are complex, both of functional and morphological order and the clinical presentation depends on multiple factors: the temporary tooth loss rate as compared with permanent tooth eruption sequence and the number and topography of teeth extracted, so the clinical form of edentulous, which can be frontal or lateral, symmetric or asymmetric, isolated or continuous.

  5. 76 FR 43236 - Federal Travel Regulation (FTR): Temporary Duty (TDY) Travel Allowances: Notice of Public Meeting

    Science.gov (United States)

    2011-07-20

    ... ADMINISTRATION 41 CFR Chapter 301 Federal Travel Regulation (FTR): Temporary Duty (TDY) Travel Allowances: Notice... Federal Travel Regulation (FTR) in an effort to streamline travel policies, increase travel efficiency and... pertain to Temporary Duty (TDY) Travel Allowances that include special conveyances, per diem and air...

  6. 76 FR 78739 - Agency Information Collection (Regulation on Application for Fisher Houses and Other Temporary...

    Science.gov (United States)

    2011-12-19

    ... AFFAIRS Agency Information Collection (Regulation on Application for Fisher Houses and Other Temporary Lodging and VHA Fisher House Application) Activity Under OMB Review AGENCY: Veterans Health Administration... Application for Fisher Houses and Other Temporary Lodging and VHA Fisher House Application, VA Forms 10-0408...

  7. 20 CFR 655.1301 - Applications for temporary employment certification in agriculture.

    Science.gov (United States)

    2010-04-01

    ... 20 Employees' Benefits 3 2010-04-01 2010-04-01 false Applications for temporary employment certification in agriculture. 655.1301 Section 655.1301 Employees' Benefits EMPLOYMENT AND TRAINING... Applications for temporary employment certification in agriculture. (a) Application filing requirements. (1) An...

  8. Novo modelo de endoprótese traqueal autoexpansível de fabricação nacional: estudo experimental em coelhos A new model of a self-expanding tracheal stent made in Brazil: an experimental study in rabbits

    Directory of Open Access Journals (Sweden)

    Celso Murilo Nálio Matias de Faria

    2012-04-01

    Full Text Available Objetivamos testar um novo modelo de endoprótese traqueal autoexpansível para que esse possa ser futuramente disponibilizado para o uso clínico. As endopróteses de nitinol revestidas de poliuretano foram alocadas no terço médio da traqueia de 25 coelhos da raça Nova Zelândia sob laringoscopia direta. Após um período de observação médio de 26 dias, avaliou-se a migração da prótese, grau de dilatação, incorporação, aderência, formação de tecido de granulação, presença de infiltrado inflamatório, envolvimento parietal e revestimento epitelial. Os resultados demonstraram completa expansibilidade radial, pouca aderência à mucosa traqueal e baixa incorporação tecidual, assim como alta taxas de formação de granulomas e de migração. Esse novo modelo demonstrou ser biocompatível e teve comportamento semelhante ao de outras próteses disponíveis no mercado.We aimed to test a new model of self-expanding tracheal stent so that it might be made available for clinical use. Using direct laryngoscopy, we placed polyurethane-coated, nitinol stents into the middle third of the trachea in 25 New Zealand rabbits. After a mean observation period of 26 days, we evaluated stent migration, degree of expansion, attachment, adherence, formation of granulation tissue, presence of inflammatory infiltrate, parietal involvement, and epithelial lining. The results showed complete radial expansion, little adherence to the tracheal mucosa, and low tissue attachment, as well as high rates of granuloma formation and stent migration. This new model proved to be biocompatible and showed a behavior similar to that of other stents on the market.

  9. Cultivating and Benefiting from Member Familiarity in Temporary Work Groups

    DEFF Research Database (Denmark)

    Hessel, Shannon

    cooperative behavior in these groups. Second, I challenge our expectation that a task-oriented over relationship-oriented approach will inevitably dominate work when projects are time-bound and of short duration by describing moments in which these groups chose relationship-oriented activities despite time......In this paper, I investigate an example of short-duration, time-bound project work conducted by high-performing groups in order to surprise our expectations regarding the motivations and potential to cooperate and to cultivate group member familiarity within such temporary organizations. Project...... participants included seven string quartets that worked together in different combinations and without the expectation of future collaboration across groups. I consider what motivated cooperation and relationship-oriented activities as well as the conditions which enabled these activities to emerge despite...

  10. Temporary and circular labour migration and codevelpment: a case estudy

    Directory of Open Access Journals (Sweden)

    Elena Sánchez-Montijano

    2012-05-01

    Full Text Available The search for new ways to manage international migration is one of the main topics at the current political agendas. Within this framework, Temporary and Circular Labour Migration (TCLM as a way of fl ow management on the one hand, and co-development as a set of actions that seek to articulate migration and development on the other, have recently been promoted as double win situations. Both initiatives depart from the assumption that migrants can make important contributions to development, in their countries of destination but also in their countries of origin. The paper explores the opportunities and difficulties that arise when a single initiative attempts tobring together these two types of activities, which have so far been managed by different entities and in separated venues. The study raises the question about the positive and negative effects of this alliance. The article presents the results of a TCLM case study.

  11. Evaluation Of A Temporary, Immersive Learning Community Based On Worldschooling

    Directory of Open Access Journals (Sweden)

    Aimee FERRARO

    2016-12-01

    Full Text Available Learning communities are a proven method for engaging groups of people who share common goals for personal growth and knowledge acquisition (Gabelnick, MacGregor, Matthews, & Smith, 1990; Taylor, Moore, MacGregor, & Lindblad, 2003. However, little is known about the usefulness of this approach in the context of alternative education. This article describes the evaluation of a temporary, immersive learning community for self-directed teen learners, Project World School (PWS, which was based on a new, pedagogical approach to learning called worldschooling. Findings indicate that regardless of demographic characteristics and personal interests, PWS attendees experienced learning and progress in three main areas: social development, personal development, and experiential academics. The PWS model shows evidence of the benefits of worldschooling and has potential to be successfully replicated and translated to other international settings.

  12. Temporary threshold shift after exposure to pop music.

    Science.gov (United States)

    Axelsson, A; Lindgren, F

    1978-01-01

    Temporary threshold shift (TTS) was studied in pop musicians as well as in listeners. It appears that TTS is less pronounced in pop musicians than in listeners. This can only in part be explained by slightly inferior hearing threshold levels than in the audience before exposure. Further, male listeners showed more TTS than female listeners. After 2 hours of exposure to live pop music a TTS2 appears in pop musicians after an exposure to 98 dB(A) as opposed to listeners where TTS2 appears at 92 dB(A). When the present results are related to the CHABA risk criteria it seems that exposure to live pop music at 100 dB(A) for 2 hours is a limit which should not be exceeded if the risk of permanent hearing loss is to be avoided.

  13. Temporary services for patients in need of chronic care

    DEFF Research Database (Denmark)

    Hesse, Morten

    2008-01-01

    experimentation than work placed within existing institutions. Discussion For socially marginalized groups who need continuing support and care, receiving help in a project means that the clients will have to be transferred to other services when the project ends. There is also a risk that clients will experience...... a decline in services, as staff members have to seek new employment towards the end of the project, or begin to focus more on the evaluation than the services. This raises some ethical issues concerning the use of human subjects in projects. Conclusion Project managers should consider ethical issues......Background A project is a temporary endeavour undertaken to create a product or service. Projects are frequently used for the testing and development of new approaches in social work. Projects can receive grants from central, often national or international institutions, and allow for more...

  14. Empowerment, job satisfaction, and organizational commitment: comparison of permanent and temporary nurses in Korea.

    Science.gov (United States)

    Han, Sang-Sook; Moon, Sook Ja; Yun, Eun Kyoung

    2009-11-01

    This study was conducted to describe and compare empowerment, job satisfaction, and organizational commitment between permanent and temporary nurses in Korea. Since Korea's economic crisis of 1997, Korea's labor market has been undergoing dramatic modification, and the rate of temporary nurses employed in health care organizations has gradually increased. However, studies focusing on nurses' employment status, which potentially affect the individual and hospital organization, have been rarely conducted. This was a descriptive comparative study. The convenient sample of 416 nurses from 19 hospitals in Korea completed a structured questionnaire. Overall, permanent nurses presented higher levels of job satisfaction, organizational commitment, and empowerment than did temporary nurses. The results of this study indicated that health care administrators should develop strategies to close the gap of perceptions between permanent and temporary nurses in Korea. The results of this study also imply that such opportunities and compensation plans related with administrative recognition should be made available to the temporary nurses to manage their workforces more efficiently.

  15. The Temporal Organization Grid: A New Classification System of Temporary Organizations

    Directory of Open Access Journals (Sweden)

    Vallari Chandna

    2017-03-01

    Full Text Available With the increased recognition of the key role played by time in processes and outcomes, there has been a renewed focus on temporary organizations. Temporary organizational forms tend to receive attention due to certain characteristics that are unique to them, as compared to permanent organizations, with regard to issues like trust, communication, organizational structure, innovation and creativity among others. They have also been known to generate significant benefits for the organizations participating in them. But to study them in detail, a comprehensive classification system of temporary organizations is needed, which has so far been missing in the extant literature. This paper sets forth a classification grid for temporary organizations which is its primary purpose and also examines the different strategically important variables that further define the typological framework and that act as determinants of success of these temporary organizations.

  16. Temporary ectropion therapy by adhesive taping: a case study

    Directory of Open Access Journals (Sweden)

    Habermann Anke

    2008-07-01

    Full Text Available Abstract Introduction Various surgical procedures are available to correct paralytic ectropion, which are applied in irreversible facial paresis. Problems occur when facial paresis has an unclear prognosis, since surgery of the lower eyelid is usually irreversible. We propose a simple method to correct temporary ectropion in facial palsy by applying an adhesive strip. Patients and methods Ten patients with peripheral facial paresis and paralytic ectropion were treated with an adhesive strip to correct paralytic ectropion. We used "Steri-Strips" (45 × 6.0 mm, which were taped on the carefully cleaned skin of the lower eyelid and of the adjacent zygomatic region until the prognosis of the paresis was clarified. In addition to the examiner's evaluation of the lower lacrimal point in the lacrimal lake, subjective improvement of the symptoms was assessed using a visual analogue scale (VAS, 1–10. Results 9 patients reported a clear improvement of the symptoms after adhesive taping. There was a clear regression of tearing (VAS (median = 8; 1 = no improvement, 10 = very good improvement, the cosmetic impairment of the adhesive tape was low (VAS (median = 2.5; 1 = no impairment, 10 = severe impairment and most of the patients found the use of the adhesive strip helpful. There was slight reddening of the skin in one case and well tolerated by the facial skin in the other cases. Conclusion The cause and location of facial nerve damage are decisive for the type of surgical therapy. In potentially reversible facial paresis, procedures should be used that are easily performed and above all reversible without complications. Until a reliable prognosis of the paresis can be made, adhesive taping is suited for the temporary treatment of paralytic ectropion. Adhesive taping is simple and can be performed by the patient.

  17. Metallization failures

    Science.gov (United States)

    Beatty, R.

    1971-01-01

    Metallization-related failure mechanisms were shown to be a major cause of integrated circuit failures under accelerated stress conditions, as well as in actual use under field operation. The integrated circuit industry is aware of the problem and is attempting to solve it in one of two ways: (1) better understanding of the aluminum system, which is the most widely used metallization material for silicon integrated circuits both as a single level and multilevel metallization, or (2) evaluating alternative metal systems. Aluminum metallization offers many advantages, but also has limitations particularly at elevated temperatures and high current densities. As an alternative, multilayer systems of the general form, silicon device-metal-inorganic insulator-metal, are being considered to produce large scale integrated arrays. The merits and restrictions of metallization systems in current usage and systems under development are defined.

  18. TREHS (Temporary Rivers Ecological and Hydrological Status): new software for investigating the degree of hydrologic alteration of temporary streams.

    Science.gov (United States)

    Gallart, Francesc; Llorens, Pilar; Cid, Núria; latron, Jérôme; Bonada, Núria; Prat, Narcís

    2017-04-01

    The evaluation of the hydrological alteration of a stream due to human activities is a first step to assess its overall quality and to design management strategies for its potential restoration. This task is currently made comparing impacted against unimpacted hydrographs, with the help of software tools, such as the IHA (Indicators of Hydrologic Alteration). Then, the environmental evaluation of the hydrological alteration is to be made in terms of its expectable menace for the original biological communities and/or its help for the spread of invasive species. However, when the regime of the target stream is not perennial, there are four main difficulties for implementing methods for assessing hydrological alteration: i) the main hydrological features relevant for biological communities in a temporary stream are not quantitative (discharges) but qualitative (temporal patterns of states such as flowing water, stagnant pools or lack of surface water), ii) stream flow records do not inform on the temporal occurrence of stagnant pools, which act as refugees for many species during the cessation of flow, iii) as most of the temporary streams are ungauged, the evaluation of their regime must be determined by using alternative methods such as remote sensing or citizen science, and iv) the biological quality assessment of the ecological status of a temporary stream must be conducted following a sampling schedule adapted to the flow regime and using adequate reference conditions. In order to overcome these challenges using an operational approach, the TREHS freely available software tool has been developed within the EU LIFE TRIVERS project (LIFE13 ENV/ES/000341). This software allows for the input of information coming from flow simulations obtained using any rainfall-runoff model (to set an unimpacted reference stream regime) and compares them with the information obtained from flow gauging records, interviews made to local citizens, instantaneous observations made by

  19. Indoor air quality and thermal comfort in temporary houses occupied after the Great East Japan Earthquake.

    Science.gov (United States)

    Shinohara, N; Tokumura, M; Kazama, M; Yonemoto, Y; Yoshioka, M; Kagi, N; Hasegawa, K; Yoshino, H; Yanagi, U

    2014-08-01

    Thermal conditions and indoor concentrations of aldehydes, volatile organic compounds (VOCs), and NO2 were investigated in 19 occupied temporary houses in 15 temporary housing estates constructed in Minamisoma City, Fukushima, Japan. The data were collected in winter, spring, and summer in January to July 2012. Thermal conditions in temporary log houses in the summer were more comfortable than those in pre-fabricated houses. In the winter, the indoor temperature was uncomfortably low in all of the houses, particularly the temporary log houses. Indoor air concentrations for most aldehydes and VOCs were much lower than the indoor guidelines, except for those of p-dichlorobenzene, acetaldehyde, and total VOCs. The indoor p-dichlorobenzene concentrations exceeded the guideline (240 μg/m(3)) in 18% of the temporary houses, and the 10(-3) cancer risk level (91 μg/m(3)) was exceeded in winter in 21% due to use of moth repellents by the occupants. Indoor acetaldehyde concentrations exceeded the guideline (48 μg/m(3) ) in about half of the temporary houses, likely originating from the wooden building materials. Indoor NO2 concentrations in the temporary houses were significantly higher in houses where combustion heating appliances were used (0.17 ± 0.11 ppm) than in those where they were not used (0.0094 ± 0.0065 ppm). In the winter, log-house-type temporary houses are comfortable in terms of humidity, dew condensation, and fungi based on the results of questionnaires and measurements, whereas pre-fabricated temporary houses are more comfortable in terms of temperature. In the summer, log-house-type temporary houses are comfortable in terms of temperature and humidity. More comfortable temporary housing in terms of temperature and humidity year-round is needed. Indoor air concentrations of p-dichlorobenzene and NO2 were quite high in some temporary houses due to occupants’ activities, such as use of moth repellents and combustion heating appliances. The government

  20. 41 CFR 302-7.1 - Who is eligible for the transportation and temporary storage of household goods (HHG) at...

    Science.gov (United States)

    2010-07-01

    ... transportation and temporary storage of household goods (HHG) at Government expense? 302-7.1 Section 302-7.1... TRANSPORTATION AND STORAGE OF PROPERTY 7-TRANSPORTATION AND TEMPORARY STORAGE OF HOUSEHOLD GOODS AND PROFESSIONAL... temporary storage of household goods (HHG) at Government expense? The following are eligible for the...

  1. 19 CFR 10.66 - Articles exported for temporary exhibition and returned; horses exported for horse racing and...

    Science.gov (United States)

    2010-04-01

    ... 19 Customs Duties 1 2010-04-01 2010-04-01 false Articles exported for temporary exhibition and... Exhibition, Etc. § 10.66 Articles exported for temporary exhibition and returned; horses exported for horse... livestock or other animals, exported for temporary exhibition and returned and claimed to be exempt from...

  2. 78 FR 39062 - Group Lotus plc; Modification of a Temporary Exemption From an Advanced Air Bag Requirement of...

    Science.gov (United States)

    2013-06-28

    ... National Highway Traffic Safety Administration Group Lotus plc; Modification of a Temporary Exemption From... Protection. SUMMARY: This notice modifies the temporary exemption granted to Group Lotus plc (Lotus) on March... in the Federal Register a notice granting Group Lotus Plc (Lotus) a temporary exemption from the...

  3. Compatibility of Radiofrequency Surgical Sponge Detection Technology with Cardiac Implantable Electronic Devices and Temporary Pacemakers.

    Science.gov (United States)

    Salcedo, Jonathan D; Pretorius, Victor G; Hsu, Jonathan C; Lalani, Gautam G; Schricker, Amir A; Hebsur, Shrinivas M; McGARRY, Thomas J; Hunter, Jessica A; Lewis, Kathryn E; Krummen, David E; Feld, Gregory K; Birgersdotter-Green, Ulrika

    2016-11-01

    Radiofrequency (RF) technology has improved detection of retained surgical sponges with a reported 100% sensitivity and specificity. However, the potential for interactions of the RF signals emitted by the detection system with cardiac implantable electronic devices (CIEDs) or temporary pacemakers may limit its use in those patients with these devices. This study investigated whether RF detection technology causes interference or clinically significant changes in the programmed settings of implanted pacemakers and defibrillators or temporary epicardial pacemakers. Fifty patients who were scheduled either for CIED removal or placement of a temporary epicardial pacemaker (at the time of open heart surgery) were recruited for this study. Device settings and measurements from separate interrogations before and after scanning with the RF detection system were compared. For the temporary pacemakers, we observed for any changes in hemodynamics or signs of pacing interference. Twenty (40%) pacemakers, 20 (40%) implantable cardioverter defibrillators, and 10 (20%) temporary pacemakers were analyzed in this study. During scanning, no signal interference was detected in any permanent device, and there were no significant changes in programmed settings after scanning with the RF detection system. However, pacing inhibition was detected with temporary pacing systems when programmed to a synchronous mode (DDD). RF detection technology can be safely used to scan for retained surgical sponges in patients with permanent CIEDs and temporary pacemakers set to asynchronous mode. © 2016 Wiley Periodicals, Inc.

  4. Review of the Potential for a Cyber-Physical System Approach to Temporary Structures Monitoring

    Directory of Open Access Journals (Sweden)

    Xiao Yuan

    2015-11-01

    Full Text Available Around three quarters of construction workers work on or near temporary structures, whose failures lead to more than 100 deaths, 4500 injuries, and damage costing $90 million each year in the United States. However, few of the temporary structural problems have been well addressed, especially when compared with the increasing improvements in permanent structures. Meanwhile, the review of leading causes of temporary structural failures identifies the need for improved methods, such as Cyber-Physical Systems (CPS, to prevent potential structural hazards. This paper makes the first effort to examine CPS applicability in temporary structures, and potential benefits brought by CPS to temporary structural monitoring. Key definitions and features of CPS, CPS applications in both other industry sectors and the built environment, and applications of CPS enabling technologies in temporary structures are reviewed. It is concluded that CPS provides opportunity to address safety and structural problems of temporary structures. For a clear understanding of how CPS works in structural monitoring, an application scenario of scaffolding system is presented. Finally, system requirements followed by a system architecture are identified.

  5. Recurrent temporary paralysis reported after human rabies post-exposure prophylaxis.

    Science.gov (United States)

    Dato, V M; Campagnolo, E R; Shah, D U; Bellush, M J; Rupprecht, C E

    2015-05-01

    Adverse events can occur after rabies post-exposure prophylaxis (PEP), and linkage to causality is often difficult to determine. We report a case of recurrent temporary paralysis that began immediately after the initiation of rabies PEP in a man exposed to a bat. The recurrent temporary paralysis first occurred in the patient after his initial dose and then again after day 3 of his rabies PEP. The PEP was terminated prior to a serologic response. The patient continued to experience numerous discrete episodes of temporary paralysis for over two years. © 2014 Blackwell Verlag GmbH.

  6. Temporary implants for patients with low bone density of the upper maxilla: an alternative rehabilitation strategy.

    Science.gov (United States)

    de Aguiar, Rogério Coelho; Zabolotsky, Borys; de Souza, Dircilene Colares; Ferreira, Cimara Fortes; Cardoso, Antônio Carlos

    2012-03-01

    The use of removable provisional prosthesis after implant placement is undesirable for many patients. In addition, removable prostheses place unfavorable pressure over implants during the healing period. The use of temporary implants enable greater stability and functionality of the prostheses. This clinical report shows the use of temporary implants in a low density maxilla in conjunction with a fixed provisional prosthesis. The temporary implants contributed to the support of the provisional fixed upper arch prosthesis and to patient comfort with a fixed prosthesis during the healing period.   Fixed provisional prostheses are a potentially desirable alternative treatment strategy. © 2009 Wiley Periodicals, Inc.

  7. Failure of communication and capture: The perils of temporary unipolar pacing system

    Directory of Open Access Journals (Sweden)

    Efe Sahinoglu, BChE

    2015-06-01

    Full Text Available We present a case of a patient with pacemaker dependence secondary to complete heart block who developed loss of capture of her temporary pacemaker. Patient developed torsades de pointes then ventricular fibrillation, requiring CPR and external cardioversion. After patient was stabilized, it was noticed that loss of capture of pacemaker corresponded with nursing care, when the pulse generator was lifted off patient׳s chest wall, and that patient׳s temporary pacing system had been programmed to unipolar mode without knowledge of attending cardiologist. This case highlights the importance of communication ensuring all caregivers are aware of mode of the temporary pacing system.

  8. [Promotional campaign of temporary methods on the Atlantic Coast].

    Science.gov (United States)

    Negrette, J C

    1989-12-01

    In 1986 the Third National Survey on Contraceptive Prevalence took place in Colombia. The results of this article are based on the CPR of Colombia's Atlantic Coast. The information demonstrated the high prevalence of female sterilization in the area, but also the lowest CPR among temporary methods. As a result of these outcomes PROFAMILIA, along with The Futures Group/SOMARC and Johns Hopkins University launched a promotional campaign in the Atlantic Region to increase the CPR. However, prior to the campaign, PROFAMILIA instituted 2 surveys to collect baseline data for the promotional campaign. The initial KAP survey was the 1st of its kind in the Atlantic Coast directed at men (15-59) and women (15-49) in fertile ages; while the 2nd KAP survey was directed at the pharmacists in the region. Focus groups were organized to determine attitudes and practices of individual men and women in the area. The social marketing of condoms and orals took place because of the attitudes of men and women towards childbearing. Most women wanted to have their children quickly followed by getting "disconnected" from childbearing through sterilization. While they are having children, they need the pill to properly space each birth. The outcomes of marketing these 2 methods demonstrated that condoms were easier to market than the pill.

  9. Temporary refugia for coral reefs in a warming world

    Science.gov (United States)

    van Hooidonk, R.; Maynard, J. A.; Planes, S.

    2013-05-01

    Climate-change impacts on coral reefs are expected to include temperature-induced spatially extensive bleaching events. Bleaching causes mortality when temperature stress persists but exposure to bleaching conditions is not expected to be spatially uniform at the regional or global scale. Here we show the first maps of global projections of bleaching conditions based on ensembles of IPCC AR5 (ref. ) models forced with the new Representative Concentration Pathways (RCPs). For the three RCPs with larger CO2 emissions (RCP 4.5, 6.0 and 8.5) the onset of annual bleaching conditions is associated with ~ 510ppm CO2 equivalent; the median year of all locations is 2040 for the fossil-fuel aggressive RCP 8.5. Spatial patterns in the onset of annual bleaching conditions are similar for each of the RCPs. For RCP 8.5, 26% of reef cells are projected to experience annual bleaching conditions more than 5 years later than the median. Some of these temporary refugia include the western Indian Ocean, Thailand, the southern Great Barrier Reef and central French Polynesia. A reduction in the growth of greenhouse-gas emissions corresponding to the difference between RCP 8.5 and 6.0 delays annual bleaching in ~ 23% of reef cells more than two decades, which might conceivably increase the potential for these reefs to cope with these changes.

  10. Virtual planning for vertical control using temporary anchorage devices

    Directory of Open Access Journals (Sweden)

    Mauricio Accorsi

    2015-01-01

    Full Text Available The new and innovative technologies are unprecedentedly improving the level of proficiency in orthodontics in the recent history of this area of expertise. The proliferation of advances, such as self-ligating systems, temporary anchorage devices, shape-memory wires, robotically wire bending, intraoral scanners, cone-beam computed tomography, bring the virtual planning, and confection of dental devices through CAD/CAM systems to the real world. In order to get efficiency and efficacy in orthodontics with these new technologies, we must understand the importance of systemically managed clinical information, medical, and dentistry history of the patients, including the images resources, which ensures the use of a communication that is assisted by the technology, with an interdisciplinary team so that the database is able to help and support the process of therapeutic decision-making. This paper presents the clinical case of a borderline patient for orthognathic surgery who had his final treatment planning supported by these new tools for three-dimensional diagnosis and virtual planning.

  11. Open bite treated with extractions and temporary anchorage devices

    Directory of Open Access Journals (Sweden)

    Carol Weinstein

    2017-01-01

    Full Text Available A 13-year-old female with a chief complaint of continuing treatment presented with Class I skeletal pattern and slight facial asymmetry. Intraorally, she had Class II molar relationship on the right side, class l on the left side and 3mm. of midline discrepancy. Her upper and lower incisors were proclined and slightly crowded. She had 1 mm. overbite and 5mm. overjet in initial mounted casts. Splint therapy was suggested to stabilize mandibular position. After splint wear, a new mounting was made, which resulted in an open bite from left second molars to right second molars. A visual treatment objective was prepared with four first bicuspid extractions. After 9 months, upper second molars were extracted and temporary anchorage devices (TADs were placed in the upper arch for intrusion. Detailing strategies such as bracket repositioning, occlusal adjustment, and elastics were used. The role of segmented models, second molar extraction treatment, and superimposition analysis in patients with discrepancies in mandibular position is discussed. It is concluded that a thorough case workup is needed to provide patients with a successful treatment for open bite cases. This case was treated orthodontically in 2 years with four bicuspid and upper second molar extractions as well as vertical control with TADs.

  12. Temporary work for children of members of the personnel

    CERN Multimedia

    2007-01-01

    TO ALL MEMBERS OF THE PERSONNEL During the period 11 June to 14 September 2007 inclusive, a limited number of temporary jobs at CERN (normally unskilled work of a routine nature) will be made available to children of members of the personnel (i.e. anyone holding an employment or association contract with CERN). It should be noted that candidates must be aged between 18 and 24 inclusive on the first day of the contract, and that they must have insurance cover for both illness and accident. In view of the limited number of jobs available, no children who have previously worked at CERN under this scheme can be considered. The duration of all appointments will be 4 weeks, the allowance being CHF 1663.- for this period. Candidates should apply via the HR Department's electronic recruitment system (E-rt): https://ert.cern.ch/browse_www/wd_pds?p_web_page_id=5466 Completed application forms must be returned to this service by 13 April 2007 at the latest. The results of the selection will be available on 11 May 2...

  13. Temporary work for children of members of the personnel

    CERN Multimedia

    2006-01-01

    TO ALL MEMBERS OF THE PERSONNEL During the period 12 June to 15 September 2006 included, there will be a limited number of jobs for temporary work at CERN (normally unskilled work of routine nature) which will be made available to children of members of the personnel (i.e. anyone holding an employment or association contract with CERN). It should be noted that candidates must be aged between 18 and 24 inclusive on the first day of the contract, and that they must have insurance cover for both illness and accident. In view of the limited number of jobs available, no children who have previously worked at CERN under this scheme can be considered. The duration of all appointments will be 4 weeks, the allowance being CHF 1640.- for this period. Candidates should apply via HR department's electronic recruitment system (E-rt) : https://ert.cern.ch/browse_www/wd_pds?p_web_page_id=4691 Completed application forms must be returned to this service by 17 April 2006 at the latest. The results of the selection will be a...

  14. Temporary work for children of members of the personnel

    CERN Multimedia

    2006-01-01

    TO ALL MEMBERS OF THE PERSONNEL During the period 12 June to 15 September 2006 included, there will be a limited number of jobs for temporary work at CERN (normally unskilled work of routine nature) which will be made available to children of members of the personnel (i.e. anyone holding an employment or association contract with CERN). It should be noted that candidates must be aged between 18 and 24 inclusive on the first day of the contract, and that they must have insurance cover for both illness and accident. In view of the limited number of jobs available, no children who have previously worked at CERN under this scheme can be considered. The duration of all appointments will be 4 weeks, the allowance being CHF 1640.- for this period. Candidates should apply via HR department's electronic recruitment system (E-rt) : https://ert.cern.ch/browse_www/wd_pds?p_web_page_id=4691 Completed application forms must be returned to this service by 17 April 2006 at the latest. The results of the selection will be...

  15. Temporary work for children of members of the personnel

    CERN Multimedia

    2007-01-01

    TO ALL MEMBERS OF THE PERSONNEL During the period 11 June to 14 September 2007 inclusive, a limited number of temporary jobs at CERN (normally unskilled work of a routine nature) will be made available to children of members of the personnel (i.e. anyone holding an employment or association contract with CERN). It should be noted that candidates must be aged between 18 and 24 inclusive on the first day of the contract, and that they must have insurance cover for both illness and accident. In view of the limited number of jobs available, no children who have previously worked at CERN under this scheme can be considered. The duration of all appointments will be 4 weeks, the allowance being CHF 1663.- for this period. Candidates should apply via the HR Department's electronic recruitment system (E-rt): https://ert.cern.ch/browse_www/wd_pds?p_web_page_id=5466 Completed application forms must be returned to this service by 13 April 2007 at the latest. The results of the selection will be available on 11 May 200...

  16. Temporary work for children of members of the personnel

    CERN Multimedia

    2007-01-01

    TO ALL MEMBERS OF THE PERSONNEL During the period 11 June to 14 September 2007 included, there will be a limited number of jobs for temporary work at CERN (normally unskilled work of routine nature) which will be made available to children of members of the personnel (i.e. anyone holding an employment or association contract with CERN). It should be noted that candidates must be aged between 18 and 24 inclusive on the first day of the contract, and that they must have insurance cover for both illness and accident. In view of the limited number of jobs available, no children who have previously worked at CERN under this scheme can be considered. The duration of all appointments will be 4 weeks, the allowance being CHF 1663.- for this period. Candidates should apply via HR department's electronic recruitment system (E-rt): https://ert.cern.ch/browse_www/wd_pds?p_web_page_id=5466 Completed application forms must be returned to this service by 13 April 2007 at the latest. The results of the selection will be...

  17. 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.)

  18. K Basins sludge removal temporary sludge storage tank system

    Energy Technology Data Exchange (ETDEWEB)

    Mclean, M.A.

    1997-06-12

    Shipment of sludge from the K Basins to a disposal site is now targeted for August 2000. The current path forward for sludge disposal is shipment to Tank AW-105 in the Tank Waste Remediation System (TWRS). Significant issues of the feasibility of this path exist primarily due to criticality concerns and the presence of polychlorinated biphenyls (PCBS) in the sludge at levels that trigger regulation under the Toxic Substance Control Act. Introduction of PCBs into the TWRS processes could potentially involve significant design and operational impacts to both the Spent Nuclear Fuel and TWRS projects if technical and regulatory issues related to PCB treatment cannot be satisfactorily resolved. Concerns of meeting the TWRS acceptance criteria have evolved such that new storage tanks for the K Basins sludge may be the best option for storage prior to vitrification of the sludge. A reconunendation for the final disposition of the sludge is scheduled for June 30, 1997. To support this decision process, this project was developed. This project provides a preconceptual design package including preconceptual designs and cost estimates for the temporary sludge storage tanks. Development of cost estimates for the design and construction of sludge storage systems is required to help evaluate a recommendation for the final disposition of the K Basin sludge.

  19. Proposed Measures to Protect Temporary Roofs from Unwanted Heat Gains

    Directory of Open Access Journals (Sweden)

    Omar S. Asfour

    2017-06-01

    Full Text Available This study focuses on the uncompleted multi-storey residential buildings located in hot climates. This construction pattern is common in the case of incremental housing, where additional floors are added to the building as housing needs grow. Top roofs in these buildings are usually left without thermal insulation until the rest of upper floors are erected. This causes higher thermal discomfort in the top flats compared to the lower ones. Thus, the aim of this study is to investigate thermal effect of some proposed temporary measures that are intended to protect these roofs from unwanted heat gains until the rest of storeys are constructed. This has been carried out using thermal modelling to find out the effect of these measures on the amount of heat transfer through the roof in both summer and winter times. The analysis showed that it is possible to achieve competent thermal protection of the top roof compared to the layered thermal insulation using simple, cost-effective, and reversible measures. Among the examined measures, covering the roof with white foldable sheets and the use of pergolas have been found to be the most effective measures. In both cases, a reduction of 38% in conductive heat transfer through the top roof in summer was observed compared to the unprotected modelling case.

  20. Metallic nanomesh

    Energy Technology Data Exchange (ETDEWEB)

    Ren, Zhifeng; Sun, Tianyi; Guo, Chuanfei

    2018-02-20

    A transparent flexible nanomesh having at least one conductive element and sheet resistance less than 300.OMEGA./.quadrature. when stretched to a strain of 200% in at least one direction. The nanomesh is formed by depositing a sacrificial film, depositing, etching, and oxidizing a first metal layer on the film, etching the sacrificial film, depositing a second metal layer, and removing the first metal layer to form a nanomesh on the substrate.

  1. Porous Biodegradable Metals for Hard Tissue Scaffolds: A Review

    Directory of Open Access Journals (Sweden)

    A. H. Yusop

    2012-01-01

    Full Text Available Scaffolds have been utilized in tissue regeneration to facilitate the formation and maturation of new tissues or organs where a balance between temporary mechanical support and mass transport (degradation and cell growth is ideally achieved. Polymers have been widely chosen as tissue scaffolding material having a good combination of biodegradability, biocompatibility, and porous structure. Metals that can degrade in physiological environment, namely, biodegradable metals, are proposed as potential materials for hard tissue scaffolding where biodegradable polymers are often considered as having poor mechanical properties. Biodegradable metal scaffolds have showed interesting mechanical property that was close to that of human bone with tailored degradation behaviour. The current promising fabrication technique for making scaffolds, such as computation-aided solid free-form method, can be easily applied to metals. With further optimization in topologically ordered porosity design exploiting material property and fabrication technique, porous biodegradable metals could be the potential materials for making hard tissue scaffolds.

  2. VLSI metallization

    CERN Document Server

    Einspruch, Norman G; Gildenblat, Gennady Sh

    1987-01-01

    VLSI Electronics Microstructure Science, Volume 15: VLSI Metallization discusses the various issues and problems related to VLSI metallization. It details the available solutions and presents emerging trends.This volume is comprised of 10 chapters. The two introductory chapters, Chapter 1 and 2 serve as general references for the electrical and metallurgical properties of thin conducting films. Subsequent chapters review the various aspects of VLSI metallization. The order of presentation has been chosen to follow the common processing sequence. In Chapter 3, some relevant metal deposition tec

  3. Perceptions of leader-member exchange: comparison of permanent and temporary employees.

    Science.gov (United States)

    Lamude, K G; Scudder, J; Simmons, D

    2000-10-01

    This study was done to explore how perceived scores for leader-member exchange varies among temporary employees and permanent employees. Study of 158 subordinates indicated no significant difference between the two member groups.

  4. 78 FR 2986 - Northern Indiana Public Service Company; Notice of Application for Temporary Variance of License...

    Science.gov (United States)

    2013-01-15

    ... Energy Regulatory Commission Northern Indiana Public Service Company; Notice of Application for Temporary...-056. c. Date Filed: November 28, 2012. d. Applicant: Northern Indiana Public Service Company (licensee.... Justin Darling, Hydro Supervisor-- Chemical and Environmental Compliance, Northern Indiana Public Service...

  5. METHOD OF LOADING OF SURFACES OF INFLUENCE BY TEMPORARY MOVING LOAD LM1

    Directory of Open Access Journals (Sweden)

    Ilyushin Nikolay Viktorovich

    2012-10-01

    The proposed methodology represents an unambiguous solution to the problem of identification of unfavourable positions of the temporary moving load LM1 (EN 1991-2 and the extreme forces or relocations involved in this respect.

  6. Instruction manual for operating the Sensys System for temporary traffic counts

    Science.gov (United States)

    2010-01-01

    This instruction manual provides information and the procedures for using the Sensys System, which was initially designed to operate in a server controlled network, for temporary traffic counts. The instructions will allow the user to fully understan...

  7. Early Closure of a Temporary Ileostomy in Patients With Rectal Cancer

    DEFF Research Database (Denmark)

    Danielsen, Anne K; Park, Jennifer; Jansen, Jens E

    2017-01-01

    anastomotic dehiscence. However, the temporary ileostomy is afflicted with complications and requires a second surgical procedure (closure) with its own complications. Early closure of the temporary ileostomy could reduce complications for rectal cancer patients. METHODS: Early closure (8-13 days after stoma...... creation) of a temporary ileostomy was compared with late closure (>12 weeks) in a multicenter randomized controlled trial, EASY (www.clinicaltrials.gov, NCT01287637) including patients undergoing rectal resection for cancer. Patients with a temporary ileostomy without signs of postoperative complications......: The trial included 127 patients in eight Danish and Swedish surgical departments, and 112 patients were available for analysis. The mean number of complications after index surgery up to 12 months follow up was significantly lower in the intervention group (1.2) compared with the control group (2.9), P

  8. Working together: critical care nurses experiences of temporary staffing within Swedish health care: A qualitative study.

    Science.gov (United States)

    Berg Jansson, Anna; Engström, Åsa

    2017-08-01

    The aim of this study is to describe critical care nurses (CCN's) experiences of working with or as temporary agency staff. This explorative qualitative study is based on interviews with five agency CCNs and five regular CCNs, a total of ten interviews, focusing on the interviewees' experiences of daily work and temporary agency staffing. The interviews were analysed manually and thematically following an inductive approach. Four themes that illustrate both similarities and differences between regular and temporary agency CCNs emerged: "working close to patients versus being responsible for everything", "teamwork versus independence", "both groups needed" and "opportunities and challenges". The study findings illustrate the complexity of the working situation for agency and regular staff in terms of the organisation and management of the temporary agency nurses and the opportunities and challenges faced by both groups. Copyright © 2016 Elsevier Ltd. All rights reserved.

  9. 77 FR 64352 - Notice of Temporary Closure of Public Lands in Custer County, ID

    Science.gov (United States)

    2012-10-19

    ... that a temporary closure to motorized travel and human entry is in effect on public lands administered... wild horses and the time needed to move the horses to the gather corrals. The legal description of the...

  10. Temporary wetlands of upland and floodplain forests on Noxubee NWR and Tombigbee NF

    Data.gov (United States)

    US Fish and Wildlife Service, Department of the Interior — Studies were conducted on 10 temporary wetlands from May 2001 - March 2006 on Noxubee National Wildlife Refuge and adjoining sections of Tombigbee National Forest to...

  11. Personal use of hair dyes and temporary black tattoos in Copenhagen hairdressers

    DEFF Research Database (Denmark)

    Hansen, Henriette S; Johansen, Jeanne D; Thyssen, Jacob P

    2010-01-01

    Hairdressers are occupationally and personally exposed to hair dye substances and adverse reactions from the skin are well known. Currently, little is known about personal exposure to hair dye ingredients and temporary black tattoos.......Hairdressers are occupationally and personally exposed to hair dye substances and adverse reactions from the skin are well known. Currently, little is known about personal exposure to hair dye ingredients and temporary black tattoos....

  12. USAGE OF PASTE FOR TEMPORARY PLACEMENT IN THE TREATMENT OF CHRONIC APICAL PERIODONTITIS

    OpenAIRE

    A.V. BORYSENKO; S.I. Palamarciuk

    2012-01-01

    Summary: The aim of the present investigation was usage of medicamental paste with antibacterial and regeneration action for temporary placement in the treatment of chronic apical periodontitis. Materials and method: The medicamental paste for temporary placement of root canals consists of a mixture of metronidazole, Enterosgel (Silm) and Alflutop (Biotehnos S.A., Romania). Thë paste was used for the treatment of 30 teeth with chronic apical periodontitis. Final obt...

  13. The impact of worker effort on public sentiment toward temporary migrants

    OpenAIRE

    Gil S. Epstein; Venturini, Alessandra

    2011-01-01

    Temporary and circular migration programs have been devised by many destination countries and supported by the European Commission as a policy to reduce welfare and social costs of immigration in destination countries. In this paper we present an additional reason for proposing temporary migration policies based on the characteristics of the foreign labor-effort supply. The level of effort exerted by migrants, which decreases over their duration in the host country, positively affects product...

  14. The impact of worker effort on public sentiment towards temporary migrants

    OpenAIRE

    Gil S. Epstein; Venturini, Alessandra

    2011-01-01

    Temporary and circular migration programs have been devised by many destination countries and supported by the European Commission as a policy to reduce welfare and social costs of immigration in destination countries. In this paper we present an additional reason for proposing temporary migration policies based on the characteristics of the foreign labor-effort supply. The level of effort exerted by migrants, which decreases over their duration in the host country, positively affects product...

  15. Vacuum with mesh is a feasible temporary closure device after fascial dehiscence

    DEFF Research Database (Denmark)

    Bjørsum-Meyer, Thomas; Skarbye, Mona; Jensen, Kenneth Højsgaard

    2013-01-01

    INTRODUCTION: The open abdomen is a challenging condition and a temporary abdominal closure device is required in order to protect the intra-abdominal viscera. We aimed to evaluate the feasibility of a recent device: vacuum-assisted wound closure and mesh-mediated fascial traction (VAWCM) after...... abdomen after fascial dehiscence. We stress the need for more studies on temporary abdominal closure devices in selected groups of patients. FUNDING: not relevant. TRIAL REGISTRATION: not relevant....

  16. Temporary agency work, the changing employment relationship and its impact on Human Resource Management

    OpenAIRE

    Mitlacher, Lars W.

    2005-01-01

    The increasing use of temporary agency work in Germany has implications for the nature of the employment relationship. The notion of a clearly defined employeremployee relationship becomes difficult to uphold in triangular relationships like in the case of temporary agency work where the agencies employees are working at the site of the client company. The blurring of the boundaries of organisations and of the employment relationship leads to ambiguities that affect Human Resource Management....

  17. Temporary transarticular stabilization with a locking plate for medial shoulder luxation in a dog.

    Science.gov (United States)

    Post, C; Guerrero, T; Voss, K; Montavon, P M

    2008-01-01

    This report describes the temporary fixation of a traumatic shoulder luxation in a large-breed dog using a 3.5-mm Locking Round-Hole Reconstruction Plate (LRHRP) to provide stable internal splinting, allowing healing of the injured ligaments, joint capsule, glenohumeral ligaments, tendons, and muscles for restoration of joint stability. The use of a temporary plate with a locking system should be considered as an option in the treatment of canine shoulder joint luxations with severe tissue damage.

  18. Heavy metal

    African Journals Online (AJOL)

    niloticus after exposure to sublethal concentrations of heavy metals such as copper, lead and zinc for a 12-week period, using static renewable toxicity tests. The concentrations of the metals accumulated in the tissue of exposed fish were about 3-5 times higher than the concentrations detected in control fish.

  19. U.S.-Russia-East Asia Comparisons of Dispatch (Temporary Worker Regulations

    Directory of Open Access Journals (Sweden)

    Ronald Brown

    2017-01-01

    Full Text Available Russia had few temporary workers in the 1990s, but after the fall of the Soviet Union and the entrance of foreign MNCs, the percent of workers on temporary contracts grew in 2014. In 2016, a new law was implemented that bans hiring temporary workers except through government-accredited agencies, but only for the purpose of substituting for employees who are temporarily absent from the workplace; to assist in the temporary expansion of production or services (for up to a maximum of nine months; and to provide temporary employment to certain approved categories of workers (i.e., fulltime students, single parents, parents of multiple children, and former convicts.This paper will compare and contrast the current labor protections of temporary dispatch workers in the U.S. and Russia, with consideration also of the recent legislative labor protections provided in the East Asian countries of China, South Korea, and Japan.Following the Introduction, the paper, in Part I discusses the phenomena of “fissurization,” in employment relations and its resulting legal implications for the regulation of “dispatch (agency” workers in the above countries. Part II compares and contrasts the regulatory approaches of the U.S. with Russia and the East Asian countries of China, Japan, and South Korea; and the Conclusion follows. Perhaps the menu of regulatory legislation provided in this paper will be useful for those looking for the tools to construct dispatch regulation in the U.S.

  20. Temporary Workforce Planning with Firm Contracts: A Model and a Simulated Annealing Heuristic

    Directory of Open Access Journals (Sweden)

    Muhammad Al-Salamah

    2011-01-01

    Full Text Available The aim of this paper is to introduce a model for temporary staffing when temporary employment is managed by firm contracts and to propose a simulated annealing-based method to solve the model. Temporary employment is a policy frequently used to adjust the working hour capacity to fluctuating demand. Temporary workforce planning models have been unnecessarily simplified to account for only periodic hiring and laying off; a company can review its workforce requirement every period and make hire-fire decisions accordingly, usually with a layoff cost. We present a more realistic temporary workforce planning model that assumes a firm contract between the worker and the company, which can extend to several periods. The model assumes the traditional constraints, such as inventory balance constraints, worker availability, and labor hour mix. The costs are the inventory holding cost, training cost of the temporary workers, and the backorder cost. The mixed integer model developed for this case has been found to be difficult to solve even for small problem sizes; therefore, a simulated annealing algorithm is proposed to solve the mixed integer model. The performance of the SA algorithm is compared with the CPLEX solution.

  1. The health of temporary foreign workers in Canada: A scoping review.

    Science.gov (United States)

    Salami, Bukola; Meherali, Salima; Salami, Azeez

    2016-03-16

    Temporary foreign workers contribute to economic prosperity in Canada, but they experience forms of structural inequities and have minimal rights, which can contribute to their ill health. The objective of this scoping review is to examine the extent, range and nature of the Canadian literature on the health of temporary foreign workers and their families in Canada. The review was guided by Arksey and O'Malley's five stages for conducting a scoping review. We performed a comprehensive search of seven databases, which revealed 994 studies. In total, 10 published research papers, which focused exclusively on the health of temporary foreign workers in Canada, were included in the study; these 10 papers represented the findings from 9 studies. The majority of the studies involved seasonal agricultural workers in the province of Ontario (n = 8). Major health issues of temporary foreign workers included mental health, occupational health, poor housing and sanitation, and barriers to accessing health care, including fear of deportation and language barriers. These health issues are highly shaped by temporary foreign workers' precarious immigration status in Canada. Findings from this study demonstrate the need to reduce barriers to health care and to conduct more research on other groups of temporary foreign workers, outside the agricultural sector.

  2. Temporary Sutureless Amniotic Membrane Patch for Acute Alkaline Burns

    Science.gov (United States)

    Kheirkhah, Ahmad; Johnson, Daniel A.; Paranjpe, Deval R.; Raju, V.K.; Casas, Victoria; Tseng, Scheffer C. G.

    2010-01-01

    Objective To evaluate the clinical outcome of a new sutureless approach for a temporary amniotic membrane patch (ProKera; Bio-Tissue, Inc, Miami, Florida) in eyes with acute burns. Methods Retrospective review of 5 eyes of 5 patients with grades I to III acute alkaline burns, receiving ProKera insertion within 8 days of injury. Results These eyes had either total (2 cases) or extensive (60%–75%, 3 cases) corneal epithelial defects with limbal (120°–360°) and conjunctival (30%–60%) epithelial defects. ProKera was inserted within a mean (SD) of 3.7 (3.1) days after burn and repeated 1 to 3 times for 3 cases. Conjunctival defects reepithelialized in 8.2 (5) days (range, 5–17 days), while limbal and corneal defects healed in 13.6 (8.3) days (range, 5–25 days). The latter was completed with circumferential closure of limbal defects followed by centripetal healing of corneal defects. In 3 eyes, early peripheral corneal neovascularization was followed by marked regression on completion of healing. During 16.8 (10.8) months of follow-up, all eyes retained a stable surface with improved corneal clarity, and without limbal deficiency or symblepharon. Conclusion This sutureless application of an amniotic membrane patch allows for early delivery of its biologic actions, which may help preserve remaining limbal stem cells for rapid expansion and prevent late cicatricial complications in eyes with mild and moderate acute alkaline burns. PMID:18695099

  3. Intolerance of Uncertainty: A Temporary Experimental Induction Procedure

    Science.gov (United States)

    Mosca, Oriana; Lauriola, Marco; Carleton, R. Nicholas

    2016-01-01

    Background and Objectives Intolerance of uncertainty (IU) is a trans-diagnostic construct involved in anxiety and related disorders. Research focused on cross-sectional reporting, manipulating attitudes toward objective and impersonal events or on treatments designed to reduce IU in clinical populations. The current paper presents an experimental procedure for laboratory manipulations of IU and tests mediation hypotheses following the Intolerance of Uncertainty Model. Methods On pre-test, undergraduate volunteers (Study 1, n = 43;68% women. Study 2, n = 169;83.8% women) were asked to provide an idiosyncratic future negative life event. State-IU, Worry, Positive and Negative Affect were assessed after that a standardized procedure was used to identify event’s potential negative consequences. The same variables were assessed on post-test, after that participants were asked to read-through increasing and decreasing IU statements. Results Temporary changes on IU were consistently reproduced in both studies. Participants receiving increasing IU instructions reported greater state-IU, Worry and Negative Affect than those receiving decreasing IU instructions. However, this latter condition was not different from a control one (Study 2). Both studies revealed significant indirect effects of IU induction instructions on Worry and Negative Affect through state-IU. Limitations Both studies used undergraduate psychology students samples, younger than average population and predominantly female. Experimental manipulation and outcome measures belongs to the same semantic domain, uncertainty, potentially limiting generalizability. Conclusions Results supported the feasibility and efficacy of the proposed IU manipulation for non-clinical sample. Findings parallel clinical research showing that state-IU preceded Worry and Negative Affect states. PMID:27254099

  4. Temporary hemiepiphysiodesis of the distal medial femur: MPFL in danger.

    Science.gov (United States)

    Bachmann, M; Rutz, E; Brunner, R; Gaston, M S; Hirschmann, M T; Camathias, C

    2014-08-01

    Temporary hemiepiphysiodesis (TH) with plate fixation is a well-accepted and common treatment for correcting leg malalignment in skeletally immature patients. The purpose of this study was to investigate any soft tissue damage caused during TH at the distal medial femur with a plate and two screws. We hypothesized that correct plate placement can affect the integrity of the medial stabilizing structures of the knee, especially the medial patellofemoral ligament (MPFL), the medial collateral ligament (MCL) or result in arthrotomy of the knee joint itself. In eight cadaveric knees of five adult humans a TH was performed with a plate and two cancellous screws at the distal medial femur using a standardized surgical technique. Subsequently the medial capsular and ligamentous structures were systematically exposed and assessed. Capsular and synovial tissue was also inspected for impingement by the plate or screws. In all knees the MPFL was present. In two specimens the MPFL was intact and the plate was lying over the dorsal part of the MPFL close to the MCL. The MPFL was completely cut in two cases in the central part of the ligament. In four cases the MPFL was partially dissected or perforated by a screw and fixed to the femur by the plate. The MCL was intact and not impinged by the implant in any case. In total four of eight knees the capsule was transected or perforated by a screw or by a part of the plate, resulting in intraarticular implant placement. Standard plate placement during TH on the distal medial femur frequently leads to damage to the MPFL, impingement of the MPFL, the capsular and synovial tissues or exposure of the knee joint.

  5. Temporary anchorage device usage: a survey among Swiss orthodontists.

    Science.gov (United States)

    Markic, Goran; Katsaros, Christos; Pandis, Nikolaos; Eliades, Theodore

    2014-04-01

    The aim of the survey was to obtain information on the treatment plan preferences, mechanics and characteristics of temporary anchorage device (TAD) application using a single case presented to orthodontists in Switzerland. A structured questionnaire to be completed by all study participants with case-specific (treatment plan including mechanics and TAD usage) and general questions (general fixed appliance and TAD usage as well as professional, educational and demographic questions) together with an orthodontic borderline case was utilised. The case was a female adult with dental Class II/2, deep bite and maxillary anterior crowing, who had been treated in childhood with extraction of four premolars and fixed appliance followed by wisdom tooth extraction. The response rate was 24.4% (108 out of 443). The majority (96.3%, 104) proposed comprehensive treatment, while 3.7% (4) planned only alignment of maxillary teeth. 8.3% (9) included a surgical approach in their treatment plan. An additional 0.9% (1) combined the surgical approach with Class II mechanics. 75.1% (81) decided on distalization on the maxilla using TADs, 7.4% (8) planned various types of Class II appliances and 3.7% (4) combined distalization using TADs or headgear with Class II appliances and surgery. Palatal implants were the most popular choice (70.6%, 60), followed by mini-screws (22.4%, 19) and mini-plates on the infrazygomatic crests (7.0%, 6). The preferred site of TAD insertion showed more variation in sagittal than in transversal dimension, and the median size of mini-screws used was 10.0-mm long (interquartile range (IQR) 2.3 mm) and 2.0-mm wide (IQR 0.3 mm). Distalization against palatal implants and then distalization against mini-screws were the most popular treatment plans. Preferred site for TAD insertion varied depending on type and size but varied more widely in the sagittal than in the transversal dimension.

  6. Modified sewage sludge as temporary landfill cover material

    Directory of Open Access Journals (Sweden)

    Jun He

    2015-07-01

    Full Text Available In order to study the feasibility of modified sewage sludge as landfill cover material and its performance in a complex landfill environment, strength and hydraulic conductivity tests were conducted. The permeability requirements for daily and interim covers were analyzed first. Based on saturated-unsaturated seepage calculations, it is suggested that approximately 1.0 × 10−4 cm/s and 1.0 × 10−5 cm/s are the appropriate values for the hydraulic conductivities of daily and interim covers, respectively. The strength and permeability requirements of the mixtures, when used as an interim cover, can be met at a sludge:lime:cement:silt:tire-derived aggregate (TDA weight ratio of 100:15:5:70:15. Results also demonstrate that the solid content ratio of modified sewage sludge, which should be greater than 60% when modified sewage sludge is used as a temporary cover material, is crucial to both strength and hydraulic performance. In addition, as the duration of soaking of modified sewage sludge in synthetic leachate increases, the unconfined compressive strength increases, and the hydraulic conductivity decreases slightly or fluctuates between 1.0 × 10−5 cm/s and 1.0 × 10−6 cm/s, still meeting the requirements for an interim cover. The reduction in hydraulic conductivity of modified sewage sludge under the effect of synthetic leachate, as well as the long-term and environmental performance of the modified sewage sludge, should be examined in future studies.

  7. Is temporary employment damaging to health? A longitudinal study on Italian workers.

    Science.gov (United States)

    Pirani, Elena; Salvini, Silvana

    2015-01-01

    Working conditions have changed dramatically over recent decades in all the countries of European Union: permanent full-time employment characterized by job security and a stable salary is replaced more and more by temporary work, apprenticeship contracts, casual jobs and part-time work. The consequences of these changes on the general well-being of workers and their health represent an increasingly important path of inquiry. We add to the debate by answering the question: are Italian workers on temporary contracts more likely to suffer from poor health than those with permanent jobs? Our analysis is based on a sample of men and women aged 16-64 coming from the Italian longitudinal survey 2007-2010 of the European Union Statistics on Income and Living Conditions. We use the method of inverse-probability-of-treatment weights to estimate the causal effect of temporary work on self-rated health, controlling for selection effects. Our major findings can be summarized as follows: firstly, we show a negative association between temporary employment and health that results from a statistical causal effect in the work-to-health direction, and does not trivially derive from a selection of healthier individuals in the group of people who find permanent jobs (selection effect). Secondly, we find that temporary employment becomes particularly negative for the individual's health when it is prolonged over time. Thirdly, whereas temporary employment does not entail significant adverse consequences for men, the link between temporary employment and health is strongly harmful for Italian women. Copyright © 2014 Elsevier Ltd. All rights reserved.

  8. Personal use of hair dyes and temporary black tattoos in Copenhagen hairdressers.

    Science.gov (United States)

    Hansen, Henriette S; Johansen, Jeanne D; Thyssen, Jacob P; Linneberg, Allan; Søsted, Heidi

    2010-06-01

    Hairdressers are occupationally and personally exposed to hair dye substances and adverse reactions from the skin are well known. Currently, little is known about personal exposure to hair dye ingredients and temporary black tattoos. To investigate hairdressers' professional and personal risk exposures and to compare the frequency of temporary tattoos among hairdressers and subjects from the general population. A questionnaire was sent to 1679 Copenhagen hairdressers and 1063 (63.3%) responded; 3471 subjects from the general population in Copenhagen were asked about temporary black tattoos. Of the female hairdressers, 38.3% had coloured hair within the previous week. Adverse skin reactions to own hair dye were reported in 29.5%. In the hairdresser population, no significant association was observed between self-reported adverse skin reactions to hair dye and having had a temporary black tattoo when adjusted for sex, age, and atopy. A total of 19.0% of hairdressers (43.5% of apprentices) and 6.3% of participants from the general population had ever had a temporary black tattoo performed at one point. There were no differences in frequency of eczema after temporary tattooing between hairdressers and subjects in the general population. Almost all hairdressers (99.2%) used gloves for hair colouring, 51% for high/low lighting, 39.6% for perming and 21.1% used gloves for shampooing. In conclusion, skin reactions to hair colour are frequent among Copenhagen hairdressers. Temporary black tattoos were more frequent among hairdressers than in a sample of the general population and increased with decreasing age.

  9. Rectal cancer patients' quality of life with a temporary stoma: shifting perspectives.

    Science.gov (United States)

    Neuman, Heather B; Park, Jason; Fuzesi, Sarah; Temple, Larissa K

    2012-11-01

    Patients with rectal cancer who have a temporary ostomy report good quality of life despite identifying a number of stoma-related difficulties. This study aimed to qualitatively explore the experiences of patients with rectal cancer who have a temporary ileostomy to better understand the discordant findings of previous quantitative quality-of-life studies. We conducted in-depth qualitative interviews with patients with stage I to III rectal cancer who underwent sphincter-preserving surgery that resulted in a temporary ileostomy. Twenty-six patients (54% male, median age 54) participated. Sixty-five percent had stage III disease, and 88% received neoadjuvant therapy. Interviews examined preoperative expectations, overall experience, and stoma impact on quality of life. With the use of grounded theory, 2 investigators independently performed line-by-line content analysis to identify key themes. Analysis continued until data saturation. Two major themes were identified: stoma-related difficulties and perceived response shift. Patients reported difficulty in exercise, sleep, social activities, sexuality, and clothing. Patients' perception of quality of life with a temporary stoma appears to have undergone a response shift through recalibration of their standards for measuring quality of life (internal measurement scale altered by side effects of neoadjuvant/adjuvant treatment, temporary nature of stoma, and accommodation to stoma) and reconceptualization of what "good quality of life" is (stoma difficulties were felt to be less important in comparison with cancer-related mortality). Although qualitative research is, by design, not generalizable, these data support our previous quantitative work. This convergence of findings suggests that our data may be representative. A temporary ileostomy represents significant difficulties for patients with rectal cancer. However, because of response shift, these difficulties may not be perceived as important to overall quality of

  10. Metals 2000

    Energy Technology Data Exchange (ETDEWEB)

    Allison, S.W.; Rogers, L.C.; Slaughter, G. [Oak Ridge National Lab., TN (United States); Boensch, F.D. [6025 Oak Hill Lane, Centerville, OH (United States); Claus, R.O.; de Vries, M. [Virginia Polytechnic Inst. and State Univ., Blacksburg, VA (United States)

    1993-05-01

    This strategic planning exercise identified and characterized new and emerging advanced metallic technologies in the context of the drastic changes in global politics and decreasing fiscal resources. In consideration of a hierarchy of technology thrusts stated by various Department of Defense (DOD) spokesmen, and the need to find new and creative ways to acquire and organize programs within an evolving Wright Laboratory, five major candidate programs identified are: C-17 Flap, Transport Fuselage, Mach 5 Aircraft, 4.Fighter Structures, and 5. Missile Structures. These results were formed by extensive discussion with selected major contractors and other experts, and a survey of advanced metallic structure materials. Candidate structural applications with detailed metal structure descriptions bracket a wide variety of uses which warrant consideration for the suggested programs. An analysis on implementing smart skins and structures concepts is given from a metal structures perspective.

  11. Space, place and body: temporary coalitions, nodes in a network

    Directory of Open Access Journals (Sweden)

    Kerith Power

    2012-12-01

    Full Text Available The articles in this collection share a concern for place, space and bodies as frameworks for thinking about and conducting educational research. The authors range in experience from senior academics, independent educators, beginning and emerging new researchers spanning a range of educational sectors. The articles originate from connections forged within and between Australia and northern countries with visits back and forth between 2004 and 2010. Some of the writers have met each other in these travels and others have not. All have encountered and participated in some way in the work of the space place and body research group, which originated in 2007 as a named research ‘node’ at Monash University.   The space place and body group formed as a result of a process designed to re-imagine research in the Faculty of Education at Monash University in order to address ‘the big questions of our time’. As a leading global university with campuses in Asia and Europe as well as several in Australia, the Dean of the Faculty cited recent evidence that the field of educational research had become too narrowly focused and that new approaches were needed to enliven the field and move it forward. Individualistic research was no longer supported and groups were formed organically around coalitions of interest. The purpose of the space place and body group was to come together to generate new conceptual, theoretical and methodological resources within the core concepts of space, place and body by collaborating across our differences. In the early phase of our development we focused on linked identity (ontological and knowledge (epistemological work, at the intersection of postcolonial and poststructural approaches to place in educational research. A specific interest in alternative and creative methodologies emerged from these onto-epistemological activities.   As part of our process we initiated temporary definitions of space, place and body, to

  12. Temporary anchorage device usage: a survey among Swiss orthodontists

    Science.gov (United States)

    2014-01-01

    Background The aim of the survey was to obtain information on the treatment plan preferences, mechanics and characteristics of temporary anchorage device (TAD) application using a single case presented to orthodontists in Switzerland. Methods A structured questionnaire to be completed by all study participants with case-specific (treatment plan including mechanics and TAD usage) and general questions (general fixed appliance and TAD usage as well as professional, educational and demographic questions) together with an orthodontic borderline case was utilised. The case was a female adult with dental Class II/2, deep bite and maxillary anterior crowing, who had been treated in childhood with extraction of four premolars and fixed appliance followed by wisdom tooth extraction. Results The response rate was 24.4% (108 out of 443). The majority (96.3%, 104) proposed comprehensive treatment, while 3.7% (4) planned only alignment of maxillary teeth. 8.3% (9) included a surgical approach in their treatment plan. An additional 0.9% (1) combined the surgical approach with Class II mechanics. 75.1% (81) decided on distalization on the maxilla using TADs, 7.4% (8) planned various types of Class II appliances and 3.7% (4) combined distalization using TADs or headgear with Class II appliances and surgery. Palatal implants were the most popular choice (70.6%, 60), followed by mini-screws (22.4%, 19) and mini-plates on the infrazygomatic crests (7.0%, 6). The preferred site of TAD insertion showed more variation in sagittal than in transversal dimension, and the median size of mini-screws used was 10.0-mm long (interquartile range (IQR) 2.3 mm) and 2.0-mm wide (IQR 0.3 mm). Conclusions Distalization against palatal implants and then distalization against mini-screws were the most popular treatment plans. Preferred site for TAD insertion varied depending on type and size but varied more widely in the sagittal than in the transversal dimension. PMID:24935644

  13. Geomorphological evolution of a newly restored upland temporary stream

    Science.gov (United States)

    Marteau, Baptiste; Batalla, Ramon J.; Gibbins, Chris N.; Green, David R.; Vericat, Damià

    2015-04-01

    The river Ehen, NW England, has been designated as a Special Area of Conservation (SAC) as it hosts England's largest population of freshwater pearl mussels (M. margaritifera). One of the Ehen's main headwater tributary, Ben Gill, was diverted to Ennerdale Lake in the 1970s to help increase the volume of water available for abstraction. Concerns over this diversion on the hydrology and sediment dynamics of the Ehen has led to the reconnection of this temporary stream as part of a project designed to improve habitat conditions for mussels in the Ehen. The reconnection has involved the construction of a new section of channel, following the natural (pre-diversion) course of Ben Gill. This paper presents findings of research designed to track the morphological evolution of the newly created Ben Gill channel. The work follows a previous research in which fluvial dynamics in the Ehen were studied before the reconnection of Ben Gill. Morpho-sedimentary dynamics are analysed at multiple scales: from the movement of individual particles, to changes on channel morphology following competent flow events. Changes in the channel's grain size distributions have been investigated in different sections, while bed mobility has been assessed using a combination of radio frequency identification (RFID) tags inserted into representative particles and painted bed patches. Additionally, digital elevation models (DEMs) of the entire new channel have been constructed by means of automatic digital photogrammetry using high resolution aerial photography taken by an unmanned aerial vehicle (UAV). DEMs of difference (DoD) between major flow events have been used to track lateral and longitudinal changes in the channel at a spatial resolution of less than 5cm. Finally, in order to link sedimentological changes in the new channel to its impact on the main stem Ehen, morpho-sedimentary changes of a gravel bar at the confluence have been monitored combining tracers (i.e. RFID) and repeated

  14. Evaluation of the temporary cavity in ordnance gelatine.

    Science.gov (United States)

    Schyma, C; Madea, B

    2012-01-10

    Gelatine is a recognized tissue simulant in wound ballistic research. The deceleration of a bullet causes a temporary cavity which provokes radial fissures by stretching the gelatine. The evaluation of gelatine destruction was performed with very different methods yet, widely known are the wound profile by Fackler and the total crack length (TCL) method. Aims of the presented experimental study were to cover a wide range of kinetic bullet energy, to gather all destruction associated parameters and to correlate them to energy dissipation. According to recommendations of the Technical Guideline Commission of the German police and to Fackler, a 10% solution of Gelita Ballistic 3 gelatine was moulded in 20 cm × 20 cm × 50 cm dimensioned blocks. In the front of the blocks a 2 mm thin and 8 cm × 8 cm film bag containing about 8 g pasty acryl paint was integrated. The blocks were cooled to 4°C and were shot from a distance of 5m. The bullet's velocity was measured in front of the target. The expanding bullets Silvertip(®) (Winchester) und First Defense(®) (Magtech) were used. Varying calibres, loads and barrel lengths bullet velocities from 250 to 686 m/s were achieved while kinetic energy was spread from 71 up to 1450 J. All projectiles were captured in gelatine and had mushroomed, as expected. The blocks were freshly cut into 1cm-slices which were optically scanned. The evaluation was performed with AxioVision (Zeiss) software and in each slice the following parameters were taken: longest fissure radius, wound profile (addition of the two longest fissures), sum of the three longest cracks, TCL, perimeter and area of the polygon created by linking the fissure ends. All analyzed parameters - either crack length based methods (wound profile and the TCL) or destruction area based methods (polygon method) - showed a strong dependence of the gelatine destruction and the energy dissipated. This regularity could be approximated by linear function (correlation coefficient

  15. Plasma metallization

    CERN Document Server

    Crowther, J M

    1997-01-01

    Many methods are currently used for the production of thin metal films. However, all of these have drawbacks associated with them, for example the need for UHV conditions, high temperatures, exotic metal precursors, or the inability to coat complex shaped objects. Reduction of supported metal salts by non-isothermal plasma treatment does not suffer from these drawbacks. In order to produce and analyse metal films before they become contaminated, a plasma chamber which could be attached directly to a UHV chamber with XPS capability was designed and built. This allowed plasma treatment of supported metal salts and surface analysis by XPS to be performed without exposure of the metal film to the atmosphere. Non-equilibrium plasma treatment of Nylon 66 supported gold(lll) chloride using hydrogen as the feed gas resulted in a 95% pure gold film, the remaining 5% of the film being carbon. If argon or helium were used as the feed gases during plasma treatment the resultant gold films were 100% pure. Some degree of s...

  16. PREPARATION OF A POLYMER ARTICLE FOR SELECTIVE METALLIZATION

    DEFF Research Database (Denmark)

    2008-01-01

    The present invention relates to the field of selective metallization, and in particular to preparing a polymer article for selective metallization by submerging the article in a first liquid, and while submergedirradiate the article by a laser beam the area of the article on which the metal...... is to be deposited. An activation step, prior to the selective metallization, comprises submerging the article in an activation liquid for depositing seedparticles in the selected area. The irradiation of the selected area is proportionate so as to cause a temporary meltingof the polymer in the surface...... of the selected area of the polymer article. The invention is advantageous in that the preparation may be performed with a relatively high scan rate across the polymer article, and in that a quite limited use of toxic chemicals....

  17. Influence of temporary cement contamination on the surface free energy and dentine bond strength of self-adhesive cements.

    Science.gov (United States)

    Takimoto, Masayuki; Ishii, Ryo; Iino, Masayoshi; Shimizu, Yusuke; Tsujimoto, Akimasa; Takamizawa, Toshiki; Ando, Susumu; Miyazaki, Masashi

    2012-02-01

    The surface free energy and dentine bond strength of self-adhesive cements were examined after the removal of temporary cements. The labial dentine surfaces of bovine mandibular incisors were wet ground with #600-grit SiC paper. Acrylic resin blocks were luted to the prepared dentine surfaces using HY Bond Temporary Cement Hard (HY), IP Temp Cement (IP), Fuji TEMP (FT) or Freegenol Temporary Cement (TC), and stored for 1 week. After removal of the temporary cements with an ultrasonic tip, the contact angle values of five specimens per test group were determined for the three test liquids, and the surface-energy parameters of the dentine surfaces were calculated. The dentine bond strengths of the self-adhesive cements were measured after removal of the temporary cements in a shear mode at a crosshead speed of 1.0mm/min. The data were subjected to one-way analysis of variance (ANOVA) followed by Tukey's HSD test. For all surfaces, the value of the estimated surface tension component γ(S)(d) (dispersion) was relatively constant at 41.7-43.3 mJm(-2). After removal of the temporary cements, the value of the γ(S)(h) (hydrogen-bonding) component decreased, particularly with FT and TC. The dentine bond strength of the self-adhesive cements was significantly higher for those without temporary cement contamination (8.2-10.6 MPa) than for those with temporary cement contamination (4.3-7.1 MPa). The γ(S) values decreased due to the decrease of γ(S)(h) values for the temporary cement-contaminated dentine. Contamination with temporary cements led to lower dentine bond strength. The presence of temporary cement interferes with the bonding performance of self-adhesive cements to dentine. Care should be taken in the methods of removal of temporary cement when using self-adhesive cements. Copyright © 2011 Elsevier Ltd. All rights reserved.

  18. Entrepreneurship as a career option: do temporary workers have the competencies, intention and willingness to become entrepreneurs?

    OpenAIRE

    Costa, S.; Caetano, António; Santos,S.C.

    2016-01-01

    This study analyses the entrepreneurial intentions and the willingness of temporary workers to consider entrepreneurship as a career option. Specifically, we analyse the self-perception of entrepreneurial competencies of a group of temporary workers. We conclude that the self-perception of different levels of entrepreneurial competencies is associated with different intentions and willingness to considering entrepreneurship as a career option. Temporary workers, an enlarging group in the labo...

  19. Coronal microleakage of four temporary restorative materials in Class II-type endodontic access preparations

    Directory of Open Access Journals (Sweden)

    Sang-Mi Yun

    2012-02-01

    Full Text Available Objectives The purpose of this study was to evaluate the microleakage of 4 temporary materials in teeth with Class II-type endodontic access preparations by using a glucose penetration model. Materials and Methods Glucose reaction test was performed to rule out the presence of any reaction between glucose and temporary material. Class II-type endodontic access preparations were made in extracted human premolars with a single root (n = 10. Each experimental group was restored with Caviton (GC, Spacer (Vericom, IRM (Dentsply-Caulk, or Fuji II(GC. Microleakage of four materials used as temporary restorative materials was evaluated by using a glucose penetration model. Data were analyzed by the one-way analysis of variance followed by a multiple-comparison Tukey test. The interface between materials and tooth were examined under a scanning electron microscope (SEM. Results There was no significant reaction between glucose and temporary materials used in this study. Microleakage was significantly lower for Caviton and Spacer than for Fuji II and IRM. SEM observation showed more intimate adaptation of tooth-restoration interfaces in Caviton and Spacer than in IRM and Fuji II. Conclusions Compared to IRM and Fuji II, Caviton and Spacer can be considered better temporary sealing materials in Class II-type endodontic access cavities.

  20. The potential contribution to climate change mitigation from temporary carbon storage in biomaterials

    DEFF Research Database (Denmark)

    Jørgensen, Susanne Vedel; Hauschild, Michael Zwicky; Nielsen, Per H.

    2015-01-01

    While lasting mitigation solutions are needed to avoid climate change in the long term, temporary solutions may play a positive role in terms of avoiding certain climatic target levels, for preventing the crossing of critical and perhaps irreversible climatic tipping points. While the potential v...... to the long-term climate change impacts given by the global warming potential which does not account for temporary aspects like benefits from non-permanent storage in terms of avoiding a critical climatic target level.......While lasting mitigation solutions are needed to avoid climate change in the long term, temporary solutions may play a positive role in terms of avoiding certain climatic target levels, for preventing the crossing of critical and perhaps irreversible climatic tipping points. While the potential...... value of temporary carbon storage in terms of climate change mitigation has been widely discussed, this has not yet been directly coupled to avoiding climatic target levels representing predicted climatic tipping points. This paper provides recommendations on how to model temporary carbon storage...

  1. Temporary wetlands: Challenges and solutions to conserving a ‘disappearing’ ecosystem

    Science.gov (United States)

    Calhoun, Aram J.K.; Mushet, David M.; Bell, Kathleen P.; Boix, Dani; Fitzsimons, James A.; Isselin-Nondedeu, Francis

    2017-01-01

    Frequent drying of ponded water, and support of unique, highly specialized assemblages of often rare species, characterize temporary wetlands, such as vernal pools, gilgais, and prairie potholes. As small aquatic features embedded in a terrestrial landscape, temporary wetlands enhance biodiversity and provide aesthetic, biogeochemical, and hydrologic functions. Challenges to conserving temporary wetlands include the need to: (1) integrate freshwater and terrestrial biodiversity priorities; (2) conserve entire ‘pondscapes’ defined by connections to other aquatic and terrestrial systems; (3) maintain natural heterogeneity in environmental gradients across and within wetlands, especially gradients in hydroperiod; (4) address economic impact on landowners and developers; (5) act without complete inventories of these wetlands; and (6) work within limited or non-existent regulatory protections. Because temporary wetlands function as integral landscape components, not singly as isolated entities, their cumulative loss is ecologically detrimental yet not currently part of the conservation calculus. We highlight approaches that use strategies for conserving temporary wetlands in increasingly human-dominated landscapes that integrate top-down management and bottom-up collaborative approaches. Diverse conservation activities (including education, inventory, protection, sustainable management, and restoration) that reduce landowner and manager costs while achieving desired ecological objectives will have the greatest probability of success in meeting conservation goals.

  2. Temporary Decompression in Critically Ill Patients: Retrospective Comparison of Ileostomy and Colostomy.

    Science.gov (United States)

    Lin, Zhi-Liang; Yu, Wen-Kui; Shi, Jia-Liang; Chen, Qi-Yi; Tan, Shan-Jun; Li, Ning

    2014-05-01

    In critically ill patients, gastrointestinal function plays an important role in multiple organ dysfunction syndrome. Patients suffering from acute lower gastrointestinal dysfunction need to be performed a temporary fecal diversion after the failure of conservative treatment. This study aims to determine which type of fecal diversion is associated with better clinical outcomes in critically ill patients. Data of critically ill patients requiring surgical decompression following acute lower gastrointestinal dysfunction between January 2008 and June 2013 were retrospectively analyzed. Comparison was made between ileostomy group and colostomy group regarding the stoma-related complications and the recovery after stoma creation. 63 patients consisted of temporary ileostomy group (n = 35) and temporary colostomy group (n = 28) were included in this study. First bowel movement and length of enteral nutrition intolerance after fecal diversion were both significantly shorter in the ileostomy group than in the colostomy group (1.70 ± 0.95 vs. 3.04 ± 1.40; p colostomy group. Both procedures provide an effective defunctioning of the distant gastrointestinal tract with a low complication incidence. We prefer a temporary ileostomy to temporary colostomy for acute lower gastrointestinal dysfunction in critically ill patients.

  3. Development and evaluation of temporary placement and conveyance operation simulation system using augmented reality

    Energy Technology Data Exchange (ETDEWEB)

    Yan, Weida; Aoyama, Shuhei; Ishii, Hirotake; Shimoda, Hiroshi [Graduate School of Energy Science, Kyoto University, Kyoto (Japan); Sang, Tran T.; Inge, Solhang Lars [AR Lab, Halden (Norway); Lygren, Toppe Aleksander; Terje, Johnsen [Institute for Energy Technolog, Halden (Norway); Izumi, Masanori [Fugen Decommissioning Engineering Center, Japan Atomic Energy Agency, Fukui (Japan)

    2012-06-15

    When decommissioning a nuclear power plant, it is difficult to make an appropriate plan to ensure sufficient space for temporary placement and conveyance operations of dismantling targets. This paper describes a system to support temporary placement and conveyance operations using augmented reality (AR). The system employs a laser range scanner to measure the three-dimensional (3D) information of the environment and a dismantling target to produce 3D surface polygon models. Then, the operator simulates temporary placement and conveyance operations using the system by manipulating the obtained 3D model of the dismantling target in the work field. Referring to the obtained 3D model of the environment, a possible collision between the dismantling target and the environment is detectable. Using AR, the collision position is presented intuitively. After field workers evaluated this system, the authors concluded that the system is feasible and acceptable to verify whether spaces for passage and temporary storage are sufficient for temporary placement and conveyance operations. For practical use in the future, some new functions must be added to improve the system. For example, it must be possible for multiple workers to use the system simultaneously by sharing the view of dismantling work.

  4. Effect of temporary cements on the bond strength of ceramic luted to dentin.

    Science.gov (United States)

    Abo-Hamar, Sahar E; Federlin, Marianne; Hiller, Karl-Anton; Friedl, Karl-Heinz; Schmalz, Gottfried

    2005-09-01

    The purpose of this study was to evaluate the effect of either eugenol-containing or eugenol-free temporary cement removal by excavator or sandblasting on the shear bond strength of ceramic luted to dentin. A self-etching primer system, Panavia F 2.0, Kuraray Medical (PF2), and a total-etch bonding system, Excite/Variolink II, Vivadent (EXV), were used. One hundred and forty human molars, ground to expose dentin surfaces, were divided into 14 groups (seven groups for each adhesive system). For each adhesive system, either a eugenol-containing (Temp bond) or a eugenol-free (Temp bond NE) temporary cement was applied to the dentin surface for 7 days, then removed by an excavator or sandblasting (four groups). Three control groups were studied where fresh dentin was either scratched by excavator or sandblasted, or underwent no surface treatment. After application of the adhesives, ceramic cones (Cerafil inserts) were adhesively luted to standardized dentin areas. After 24 h storage in distilled water, the shear bond strengths were determined at a cross-head speed of 0.75 mm/min. For each adhesive system, neither the method of temporary cement removal nor the type of temporary cement affected the bond strength significantly (Pcements, either containing eugenol or not, does not alter the retentive strength of ceramic restorations luted to dentin using the tested adhesive systems, whether the temporary cements are removed by excavator or sandblasting.

  5. Temporary Fecal Diversion in the Management of Colorectal and Perianal Crohn’s Disease

    Directory of Open Access Journals (Sweden)

    Rudolf Mennigen

    2015-01-01

    Full Text Available Aim. To evaluate the results of temporary fecal diversion in colorectal and perianal Crohn’s disease. Method. We retrospectively identified 29 consecutive patients (14 females, 15 males; median age: 30.0 years, range: 18–76 undergoing temporary fecal diversion for colorectal (n=14, ileal (n=4, and/or perianal Crohn’s disease (n=22. Follow-up was in median 33.0 (3–103 months. Response to fecal diversion, rate of stoma reversal, and relapse rate after stoma reversal were recorded. Results. The response to temporary fecal diversion was complete remission in 4/29 (13.8%, partial remission in 12/29 (41.4%, no change in 7/29 (24.1%, and progress in 6/29 (20.7%. Stoma reversal was performed in 19 out of 25 patients (76% available for follow-up. Of these, the majority (15/19, 78.9% needed further surgical therapies for a relapse of the same pathology previously leading to temporary fecal diversion, including colorectal resections (10/19, 52.6% and creation of a definitive stoma (7/19, 36.8%. At the end of follow-up, only 4/25 patients (16% had a stable course without the need for further definitive surgery. Conclusion. Temporary fecal diversion can induce remission in otherwise refractory colorectal or perianal Crohn’s disease, but the chance of enduring remission after stoma reversal is low.

  6. Association of temporary complete AV block and junctional ectopic tachycardia after surgery for congenital heart disease.

    Science.gov (United States)

    Paech, Christian; Dähnert, Ingo; Kostelka, Martin; Mende, Meinhardt; Gebauer, Roman

    2015-01-01

    Junctional ectopic tachycardia (JET) is a postoperative complication with a mortality rate of up to 14% after surgery for congenital heart disease. This study evaluated the risk factors of JET and explored the association of postoperative temporary third degree atrioventricular (AV) block and the occurrence of JET. Data were collected retrospectively from 1158 patients who underwent surgery for congenital heart disease. The overall incidence of JET was 2.8%. Temporary third degree AV block occurred in 1.6% of cases. Permanent third degree AV block requiring pacemaker implantation occurred in 1% of cases. In all, 56% of patients with JET had temporary AV block (P < 0.001), whereas no case of postoperative JET was reported in patients with permanent AV block (P = 0.56). temporary third degree AV block did not suffer from JET. A correlation between temporary third degree AV block and postoperative JET could be observed. The risk factors identified for JET include younger age groups at the time of surgery, longer aortic cross clamping time and surgical procedures in proximity to the AV node.

  7. Association of temporary complete AV block and junctional ectopic tachycardia after surgery for congenital heart disease

    Directory of Open Access Journals (Sweden)

    Christian Paech

    2015-01-01

    Full Text Available Aim: Junctional ectopic tachycardia (JET is a postoperative complication with a mortality rate of up to 14% after surgery for congenital heart disease. This study evaluated the risk factors of JET and explored the association of postoperative temporary third degree atrioventricular (AV block and the occurrence of JET. Materials and Methods: Data were collected retrospectively from 1158 patients who underwent surgery for congenital heart disease. Results: The overall incidence of JET was 2.8%. Temporary third degree AV block occurred in 1.6% of cases. Permanent third degree AV block requiring pacemaker implantation occurred in 1% of cases. In all, 56% of patients with JET had temporary AV block (P < 0.001, whereas no case of postoperative JET was reported in patients with permanent AV block (P = 0.56. temporary third degree AV block did not suffer from JET. Conclusions: A correlation between temporary third degree AV block and postoperative JET could be observed. The risk factors identified for JET include younger age groups at the time of surgery, longer aortic cross clamping time and surgical procedures in proximity to the AV node.

  8. Influence of temporary migration on the transmission of infectious diseases in a migrants' home village.

    Science.gov (United States)

    Wang, Lin; Wang, Xiao

    2012-05-07

    The number of temporary migrant workers from rural areas to urban areas in emerging market economies like China has increased dramatically since the early 1980s. Temporary migrant workers have been labeled as the major driving force for the rising incidence of infectious diseases in cities. However, it has not been well recognized that temporary migration indeed may have tremendous impacts on the spread of infectious diseases in migrants' home villages. In this paper, by proposing a delay differential equation model, we provide a framework to study the influence of temporary migration on the transmission of infectious diseases in a migrant workers' home village. The model is shown to admit a unique positive equilibrium which is locally asymptotically stable and is globally asymptotically stable under certain conditions. This implies that the disease always persists at a constant level. Considering tuberculosis as an example, we explore various disease prevention and control strategies numerically to demonstrate how migration related parameters affect the early outbreak of the disease. We find that a single control strategy, such as reducing the migration time period alone, has little effect on reducing the disease endemic level. For disease prevention and control, temporary migrant workers should be identified as the top target group, and a combination of several prevention strategies should be implemented. Copyright © 2012 Elsevier Ltd. All rights reserved.

  9. Temporary hemodialysis catheter placement by nephrology fellows: implications for nephrology training.

    Science.gov (United States)

    Clark, Edward G; Schachter, Michael E; Palumbo, Andrea; Knoll, Greg; Edwards, Cedric

    2013-09-01

    The insertion of temporary hemodialysis catheters is considered to be a core competency of nephrology fellowship training. Little is known about the adequacy of training for this procedure and the extent to which evidence-based techniques to reduce complications have been adopted. We conducted a web-based survey of Canadian nephrology trainees regarding the insertion of temporary hemodialysis catheters. Responses were received from 45 of 68 (66%) eligible trainees. The median number of temporary hemodialysis catheters inserted during the prior 6 months of training was 5 (IQR, 2-11), with 9 (20%) trainees reporting they had inserted none. More than one-third of respondents indicated that they were not adequately trained to competently insert temporary hemodialysis catheters at both the femoral and internal jugular sites. These findings are relevant to a discussion of the current adequacy of procedural skills training during nephrology fellowship. With respect to temporary hemodialysis catheter placement, there is an opportunity for increased use of simulation-based teaching by training programs. Certain infection control techniques and use of real-time ultrasound should be more widely adopted. Consideration should be given to the establishment of minimum procedural training requirements at the level of both individual training programs and nationwide certification authorities. Copyright © 2013 National Kidney Foundation, Inc. Published by Elsevier Inc. All rights reserved.

  10. Considerations on National and Union Regulations of Work through a Temporary Employment Agent

    Directory of Open Access Journals (Sweden)

    Carmen Constantina Nenu

    2013-05-01

    Full Text Available The necessity to adapt the organizational structure of economic operators to the competitive European market requirements has imposed measures that have also influenced labor relations. The permanent and full-time employment relationship has been largely replaced by other types of more flexible labor relationships: temporary employment, part-time work. working from home and temporary assignment through an employment agency. All these types of work relationships are characterized by a decrease of guarantees for the employee and by a reduction of trade union power. Thus, they are considered atypical work relationships. The need to make the flexibility of labor relationships compatible with the protection of employees” rights has been a challenge that must be faced by social policies and also by labor law. In this context, the use of a temporary employment agent has been a tool for flexible working relationships both with the economic operators and within the labor market as a whole. The importane and role of this type of working relationship has, therefore, acquired significant legal, economic and social dimensions, which this study intends to analyze. In a European economy hit by the jobs crisis, reliance on work through a temporary employment agent can be a way to reduce unemployment. This happens only if the temporary workers benefit from legal protection and equal treatment as permanent employees.

  11. Temporary deafness can impair multisensory integration: a study of cochlear-implant users.

    Science.gov (United States)

    Landry, Simon P; Guillemot, Jean-Paul; Champoux, François

    2013-07-01

    Previous investigations suggest that temporary deafness can have a dramatic impact on audiovisual speech processing. The aim of this study was to test whether temporary deafness disturbs other multisensory processes in adults. A nonspeech task involving an audiotactile illusion was administered to a group of normally hearing individuals and a group of individuals who had been temporarily auditorily deprived. Members of this latter group had their auditory detection thresholds restored to normal levels through the use of a cochlear implant. Control conditions revealed that auditory and tactile discrimination capabilities were identical in the two groups. However, whereas normally hearing individuals integrated auditory and tactile information, so that they experienced the audiotactile illusion, individuals who had been temporarily deprived did not. Given the basic nature of the task, failure to integrate multisensory information could not be explained by the use of the cochlear implant. Thus, the results suggest that normally anticipated audiotactile interactions are disturbed following temporary deafness.

  12. Temporary agency work, migration and the crisis in Greece: labour market segmentation intensified.

    Science.gov (United States)

    Maroukis, Thanos

    2016-05-01

    This article focuses on the under-researched temporary agency employment in Greece. It shows that the development of the temporary employment agency sector has gone hand in hand with the flow of undocumented and exploitable migrant labour in Greece over the past 25 years, reflecting the segmentation of the Greek labour market along ethnic lines. Using empirical research evidence on the operation of temporary employment agencies in the Greek hospitality and health care sectors, the article highlights the precarious or even illicit nature of agency employment in a context in which labour outsourcing and flexible employment are promoted by policy-makers. Last but not least, it suggests that the segmented landscape of the Greek labour market has become more complex during the economic crisis, with more and more Greeks drawn to agency-mediated precarious employment.

  13. The Impact of Education and Occupation on Temporary and Permanent Work Incapacity

    DEFF Research Database (Denmark)

    Datta Gupta, Nabanita; Lau, Daniel; Pozzoli, Dario

    This paper investigates whether education and working in a physically demand- ing job causally impact temporary work incapacity, i.e. sickness absence, and permanent work incapacity, i.e. the inflow to disability via sickness absence. Our contribution is to allow endogeneity of both education...... and occupation by estimating a quasi-maximum-likelihood discrete factor model. Data on sickness absence and disability spells for the population of older workers come from the Danish administrative registers for 1998-2002. We generally find an independent role of both education and occupation on temporary work...... incapacity only. Having at least primary education reduces women's (men's) probability of temporary work incapacity by 16% (38%) while working in a physically demanding job increases it by 37% (26%). On the other hand, conditional on sickness absence, the effects of education and occupation on permanent work...

  14. A biological tool to assess flow connectivity in reference temporary streams from the Mediterranean Basin

    Energy Technology Data Exchange (ETDEWEB)

    Cid, N., E-mail: ncid@ub.edu [Grup de Recerca “Freshwater Ecology and Management (FEM)”, Departament d' Ecologia, Universitat de Barcelona, Catalonia (Spain); Verkaik, I. [Grup de Recerca “Freshwater Ecology and Management (FEM)”, Departament d' Ecologia, Universitat de Barcelona, Catalonia (Spain); García-Roger, E.M. [Grup de Recerca “Freshwater Ecology and Management (FEM)”, Departament d' Ecologia, Universitat de Barcelona, Catalonia (Spain); Institut Cavanilles de Biodiversitat i Biologia Evolutiva, Universitat de València (Spain); Rieradevall, M.; Bonada, N. [Grup de Recerca “Freshwater Ecology and Management (FEM)”, Departament d' Ecologia, Universitat de Barcelona, Catalonia (Spain); Sánchez-Montoya, M.M. [Department of Ecology and Hydrology, Regional Campus of International Excellence “Campus Mare Nostrum”—University of Murcia (Spain); Leibniz-Institute of Freshwater Ecology and Inland Fisheries (IGB), Berlin (Germany); Gómez, R.; Suárez, M.L.; Vidal-Abarca, M.R. [Department of Ecology and Hydrology, Regional Campus of International Excellence “Campus Mare Nostrum”—University of Murcia (Spain); Demartini, D.; Buffagni, A.; Erba, S. [Instituto di Ricerca Sulle Acque (CNR-IRSA) (Italy); Karaouzas, I.; Skoulikidis, N. [Hellenic Center for Marine Research (HCMR) (Greece); Prat, N. [Grup de Recerca “Freshwater Ecology and Management (FEM)”, Departament d' Ecologia, Universitat de Barcelona, Catalonia (Spain)

    2016-01-01

    Many streams in the Mediterranean Basin have temporary flow regimes. While timing for seasonal drought is predictable, they undergo strong inter-annual variability in flow intensity. This high hydrological variability and associated ecological responses challenge the ecological status assessment of temporary streams, particularly when setting reference conditions. This study examined the effects of flow connectivity in aquatic macroinvertebrates from seven reference temporary streams across the Mediterranean Basin where hydrological variability and flow conditions are well studied. We tested for the effect of flow cessation on two streamflow indices and on community composition, and, by performing random forest and classification tree analyses we identified important biological predictors for classifying the aquatic state either as flowing or disconnected pools. Flow cessation was critical for one of the streamflow indices studied and for community composition. Macroinvertebrate families found to be important for classifying the aquatic state were Hydrophilidae, Simuliidae, Hydropsychidae, Planorbiidae, Heptageniidae and Gerridae. For biological traits, trait categories associated to feeding habits, food, locomotion and substrate relation were the most important and provided more accurate predictions compared to taxonomy. A combination of selected metrics and associated thresholds based on the most important biological predictors (i.e. Bio-AS Tool) were proposed in order to assess the aquatic state in reference temporary streams, especially in the absence of hydrological data. Although further development is needed, the tool can be of particular interest for monitoring, restoration, and conservation purposes, representing an important step towards an adequate management of temporary rivers not only in the Mediterranean Basin but also in other regions vulnerable to the effects of climate change. - Highlights: • The effect of flow connectivity on macroinvertebrate

  15. Penetrating craniofacial injuries in children with wooden and metal chopsticks.

    Science.gov (United States)

    Park, Se-Hyuck; Cho, Ki Hong; Shin, Yong Sam; Kim, Se Hyuck; Ahn, Young Hwan; Cho, Kyung Gi; Yoon, Soo Han

    2006-01-01

    Penetrating craniofacial injuries with chopsticks in children are peculiar accidents in the Oriental culture. All 10 cases previously reported were caused by wooden chopsticks that required surgical operations. However, there are no reported injuries with metal chopsticks in the past literature which should have been as common as that of wooden chopstick injuries in Asia. We evaluated the difference of injury patterns and clinical observations between wooden and metal chopstick injuries. We reviewed 6 treated children with penetrating craniofacial injuries from chopsticks: one wooden and five metal chopsticks. One child who had penetration through the nasal cavity presented with temporary rhinorrhea, another with mild hemiparesis, and one child with temporary upward gaze limitation of the left eye. Radiological examination revealed 1 patient with epidural hemorrhage, 1 patient with minimal subdural hemorrhage, and 4 with intracerebral hemorrhage that were fortunately too small to receive surgery. We performed surgical procedure only for a child who had a wooden chopstick that had impacted into the temporal cortex. We followed up all 6 children for more than 1 year, and found that all had fully recovered to near-normal neurological status. We observed that penetrating craniofacial injuries with metal chopsticks rarely require surgical intervention and usually results in good outcome because the resultant wound is usually small without broken fragments compared to injuries with wooden chopsticks. Copyright 2006 S. Karger AG, Basel

  16. MACROECONOMIC KALECKI’S MODEL IN VIEW OF AN INVESTMENT TEMPORARY LAG

    Directory of Open Access Journals (Sweden)

    Eduard A. Gevorkyan

    2015-01-01

    Full Text Available The dependence of the gross domestic product on time ( Y ( t in macroeconomic Kalecki’s model in view of an investment temporary lag in the case of periodic dependence of the consumption function on time is investigated. As a result of solutions of linear ordinary differential equation and differential equation with lagging argument an analytical expressions for the Y ( t is received. Some aspects of influence of a temporary lag on character of variation of the function Y ( t are shown.

  17. Do changes in regulation affect employment duration in temporary help agencies?

    DEFF Research Database (Denmark)

    Antoni, Manfred; Jahn, Elke

    2009-01-01

    The employment duration of workers in temporary help agencies is seen as an important indicator of their job quality. Most of the countries that regulate temporary agency employment do so to insure at least a minimal level of employment stability. Over the past three decades Germany has repeatedl...... to these reforms. We find that the repeated prolongation of the maximum assignment period has significantly increased average employment duration, while the possibility to conclude fixed-term contracts and further liberalizations have reduced employment tenure....

  18. Responding to Multiple Institutional Logics in Inter-institutional Temporary Organizations

    DEFF Research Database (Denmark)

    Söderlund, Jonas; Pemsel, Sofia

    2016-01-01

    This paper draws on findings from a unique case study of a temporary organization that carried the responsibility for the planning and construction of a new super hospital in Stockholm, Sweden. Our empirical study explores how this temporary organization responded to requirements from different...... and sometimes conflicting institutional logics. The paper identifies four distinct response strategies that project actors relied upon to deal with the multiplicity of logics: total integration, partial decoupling, avoidance, and surfing. We discuss how these response strategies were used in the studied case......, in what situations, and what effects they had on the organization and the collaboration process....

  19. Temporary antibiotic cement-covered gamma nail spacer for an infected nonunion of the proximal femur.

    Science.gov (United States)

    Rodriguez, Hugo; Ziran, Bruce H

    2007-01-01

    We report the case of an infected nonunion of the proximal femoral in an elderly patient. There was extensive involvement of the entire proximal femur precluding salvage. An impromptu use of a cephalomedullary nail coated with antibiotic-laden bone cement is described, followed by reimplantation with a revision-type proximal femoral prosthesis. The patient had resection of the proximal femur, placement of a temporary functional spacer, and reimplantation after a course of antibiotics, with good success. The method we describe is a reasonable alternative when standard off-the-shelf systems or other methods of temporary spacer creation are not available.

  20. Performance of Temporary Hemodialysis Catheter Insertion by Nephrology Fellows and Attending Nephrologists.

    Science.gov (United States)

    McQuillan, Rory F; Clark, Edward; Zahirieh, Alireza; Cohen, Elaine R; Paparello, James J; Wayne, Diane B; Barsuk, Jeffrey H

    2015-10-07

    Concerns have been raised about nephrology fellows' skills in inserting temporary hemodialysis catheters. Less is known about temporary hemodialysis catheter insertion skills of attending nephrologists supervising these procedures. The aim of this study was to compare baseline temporary hemodialysis catheter insertion skills of attending nephrologists with the skills of nephrology fellows before and after a simulation-based mastery learning (SBML) intervention. This pre- post-intervention study with a pretest-only comparison group was conducted at the University of Toronto in September of 2014. Participants were nephrology fellows and attending nephrologists from three university-affiliated academic hospitals who underwent baseline assessment of internal jugular temporary hemodialysis catheter insertion skills using a central venous catheter simulator. Fellows subsequently completed an SBML intervention, including deliberate practice with the central venous catheter simulator. Fellows were expected to meet or exceed a minimum passing score at post-test. Fellows who did not meet the minimum passing score completed additional deliberate practice. Attending nephrologist and fellow baseline performance on the temporary hemodialysis catheter skills assessment was compared. Fellows' pre- and post-test temporary hemodialysis catheter insertion performance was compared to assess the effectiveness of SBML. The skills assessment was scored using a previously published 28-item checklist. The minimum passing score was set at 79% of checklist items correct. In total, 19 attending nephrologists and 20 nephrology fellows participated in the study. Mean attending nephrologist checklist scores (46.1%; SD=29.5%) were similar to baseline scores of fellows (41.1% items correct; SD=21.4%; P=0.55). Only two of 19 attending nephrologists (11%) met the minimum passing score at baseline. After SBML, fellows' mean post-test score improved to 91.3% (SD=6.9%; Pnephrology fellows' skills, with

  1. The Impact of Education and Occupation on Temporary and Permanent Work Incapacity

    DEFF Research Database (Denmark)

    Gupta, Nabanita Datta; Lau, Daniel; Pozzoli, Dario

    2016-01-01

    This paper investigates whether education and working in a physically demanding job causally impact temporary work incapacity (TWI), i. e. sickness absence and permanent work incapacity (PWI), i. e. the inflow to disability via sickness absence. Our contribution is to allow for endogeneity of both....... Once we condition on temporary incapacity, we find again a causal effect of education on PWI, but no effect of occupation. Our results confirm that workers in physically demanding jobs are broken down by their work over time (women more than men) but only in terms of TWI....

  2. Metallic glasses

    NARCIS (Netherlands)

    Schaafsma, Arjen Sybren

    1981-01-01

    It is shown in section 7.1. that the influence of topological disorder on the range of magnetic interactions in ferromagnetic transition metal-metalloid (TM-M) glasses, is much less than often assumed. This is demonstrated via a study of the temperature dependence of the average iron hyperfine field

  3. Biodegradable Metals for Cardiovascular Stent Application: Interests and New Opportunities

    Directory of Open Access Journals (Sweden)

    Maryam Moravej

    2011-06-01

    Full Text Available During the last decade, biodegradable metallic stents have been developed and investigated as alternatives for the currently-used permanent cardiovascular stents. Degradable metallic materials could potentially replace corrosion-resistant metals currently used for stent application as it has been shown that the role of stenting is temporary and limited to a period of 6–12 months after implantation during which arterial remodeling and healing occur. Although corrosion is generally considered as a failure in metallurgy, the corrodibility of certain metals can be an advantage for their application as degradable implants. The candidate materials for such application should have mechanical properties ideally close to those of 316L stainless steel which is the gold standard material for stent application in order to provide mechanical support to diseased arteries. Non-toxicity of the metal itself and its degradation products is another requirement as the material is absorbed by blood and cells. Based on the mentioned requirements, iron-based and magnesium-based alloys have been the investigated candidates for biodegradable stents. This article reviews the recent developments in the design and evaluation of metallic materials for biodegradable stents. It also introduces the new metallurgical processes which could be applied for the production of metallic biodegradable stents and their effect on the properties of the produced metals.

  4. Temporary Versus Permanent Group Membership : How the Future Prospects of Newcomers Affect Newcomer Acceptance and Newcomer Influence

    NARCIS (Netherlands)

    Rink, Floor A.; Ellemers, Naomi

    Three studies examine how the future prospects of new group members affect newcomer acceptance and newcomer influence. In Study 1, participants anticipate accepting temporary newcomers less easily than permanent newcomers because they expect temporary newcomers to differ from the group. In Study 2,

  5. 26 CFR 1.706-2T - Temporary regulations; question and answer under the Tax Reform Act of 1984.

    Science.gov (United States)

    2010-04-01

    ... 26 Internal Revenue 8 2010-04-01 2010-04-01 false Temporary regulations; question and answer under the Tax Reform Act of 1984. 1.706-2T Section 1.706-2T Internal Revenue INTERNAL REVENUE SERVICE...-2T Temporary regulations; question and answer under the Tax Reform Act of 1984. Question 1: For...

  6. 76 FR 15129 - Temporary Non-Agricultural Employment of H-2B Aliens in the United States

    Science.gov (United States)

    2011-03-18

    ... and Hour Division 29 CFR Part 503 Temporary Non-Agricultural Employment of H-2B Aliens in the United... Division 29 CFR Part 503 RIN 1205-AB58 Temporary Non-Agricultural Employment of H-2B Aliens in the United... petitions the Secretary certify that the employment of the alien in such labor or services will not...

  7. 77 FR 10037 - Temporary Non-Agricultural Employment of H-2B Aliens in the United States

    Science.gov (United States)

    2012-02-21

    ... and Hour Division 29 CFR Part 503 Temporary Non-Agricultural Employment of H-2B Aliens in the United... Division 29 CFR Part 503 RIN 1205-AB58 Temporary Non-Agricultural Employment of H-2B Aliens in the United...

  8. 77 FR 12723 - Labor Certification Process for the Temporary Employment of Aliens in Agriculture in the United...

    Science.gov (United States)

    2012-03-02

    ... Administration 20 CFR Part 655 Labor Certification Process for the Temporary Employment of Aliens in Agriculture... Employment of H-2A Aliens in the United States; Final Rule'', 75 FR 6884, 6891-6901, Feb. 12, 2010 (the 2010... Statistics Survey rather than the FLS to set the AEWR. See ``Temporary Agricultural Employment of H-2A Aliens...

  9. Job insecurity and well-being in the temporary workforce : Testing volition and contract expectations as boundary conditions

    NARCIS (Netherlands)

    Bernhard-Oettel, C.; Rigotti, T.; Clinton, M.; de Jong, J.P.

    2013-01-01

    This study investigates whether temporary contract volition and workers' expectations for contract renewal are boundary conditions to explain differences in temporary workers' job insecurity feelings and well-being. It is hypothesized that (1) low volition through higher job insecurity indirectly

  10. 26 CFR 1.6045-2T - Furnishing statement required with respect to certain substitute payments (temporary).

    Science.gov (United States)

    2010-04-01

    ... 26 Internal Revenue 13 2010-04-01 2010-04-01 false Furnishing statement required with respect to certain substitute payments (temporary). 1.6045-2T Section 1.6045-2T Internal Revenue INTERNAL REVENUE... § 1.6045-2T Furnishing statement required with respect to certain substitute payments (temporary). (a...

  11. 76 FR 60802 - Foreign-Trade Zone 77-Memphis, TN; Withdrawal of Request for Temporary/Interim Manufacturing...

    Science.gov (United States)

    2011-09-30

    ... Foreign-Trade Zones Board Foreign-Trade Zone 77--Memphis, TN; Withdrawal of Request for Temporary/Interim Manufacturing Authority; Flextronics Logistics USA, Inc., (Cell Phone/Mobile Handset Kitting). Memphis, TN..., requesting temporary/interim manufacturing authority on behalf of Flextronics Logistics USA, Inc. in Memphis...

  12. 77 FR 3325 - Emergency Temporary Closure of the I-64 Sherman-Minton Bridge Over the Ohio River Between Indiana...

    Science.gov (United States)

    2012-01-23

    ... No. FHWA-2011-0104] Emergency Temporary Closure of the I-64 Sherman-Minton Bridge Over the Ohio River... Transportation to continue temporary closure of the I-64 Sherman-Minton Bridge over the Ohio River between...-64 Sherman-Minton Bridge over the Ohio River between Indiana and Kentucky which the Indiana Governor...

  13. 78 FR 15114 - Group Lotus plc; Grant of Petition for a Temporary Exemption From an Advanced Air Bag Requirement...

    Science.gov (United States)

    2013-03-08

    ... National Highway Traffic Safety Administration Group Lotus plc; Grant of Petition for a Temporary Exemption... Protection. SUMMARY: This notice grants the petition of Group Lotus plc (Lotus) for a temporary exemption of... accordance with 49 U.S.C. 30113 and the procedures in 49 CFR Part 555, Group Lotus Plc (Lotus) has submitted...

  14. 26 CFR 1.1041-1T - Treatment of transfer of property between spouses or incident to divorce (temporary).

    Science.gov (United States)

    2010-04-01

    ... spouses or incident to divorce (temporary). 1.1041-1T Section 1.1041-1T Internal Revenue INTERNAL REVENUE... Exchanges § 1.1041-1T Treatment of transfer of property between spouses or incident to divorce (temporary... of) a spouse or, if the transfer is incident to a divorce, a former spouse. The following questions...

  15. Project for the individualised temporary storage of spent fuel; Proyecto de almacen temporal individualizado de combustible gastado

    Energy Technology Data Exchange (ETDEWEB)

    Fernandez San Martin, A.; Bolanos, J.

    2010-07-01

    As a temporary solution until the NTS comes into operation, the VI Radwaste plan (PGRR) contemplates the possibility of transferring the spent fuel from de NPPs, once it has spent sufficient time in the pool to be cooled, to temporary individualised storage sites, such as those applied at the Trillo and Jose Cabrera NPPS. (Author).

  16. 26 CFR 1.404(k)-1T - Questions and answers relating to the deductibility of certain dividend distributions. (Temporary)

    Science.gov (United States)

    2010-04-01

    ... deductibility of certain dividend distributions. (Temporary) 1.404(k)-1T Section 1.404(k)-1T Internal Revenue... Pension, Profit-Sharing, Stock Bonus Plans, Etc. § 1.404(k)-1T Questions and answers relating to the deductibility of certain dividend distributions. (Temporary) Q-1: What does section 404(k) provide? A-1: Section...

  17. 41 CFR 102-117.310 - What records must I keep on temporary nonuse, suspension or debarment of a TSP?

    Science.gov (United States)

    2010-07-01

    ... on temporary nonuse, suspension or debarment of a TSP? 102-117.310 Section 102-117.310 Public... MANAGEMENT REGULATION TRANSPORTATION 117-TRANSPORTATION MANAGEMENT Transportation Service Provider (TSP) Performance § 102-117.310 What records must I keep on temporary nonuse, suspension or debarment of a TSP? (a...

  18. Measuring temporary employment. Do survey or register data tell the truth?

    NARCIS (Netherlands)

    Pavlopoulos, D.; Vermunt, J.K.

    2015-01-01

    One of the main variables in the Dutch Labour Force Survey is the variable measuring whether a respondent has a permanent or a temporary job. The aim of our study is to determine the measurement error in this variable by matching the information obtained by the longitudinal part of this survey with

  19. [Endovascular method of stopping gastric hemorrhages using temporary occlusion of the major vessels].

    Science.gov (United States)

    Losev, Iu A

    1978-04-01

    The author's method consists in temporary occlusion of the hepatic and splenic arteries; and contrast-medium or hemostatic sponge, introduced into the celiac trunk proximally to the site of the occlusion, propagate into the stomach artery. The method proved to be satisfactory in 8 patients.

  20. Re-design, re-use and recycle of temporary houses

    Energy Technology Data Exchange (ETDEWEB)

    Arslan, Hakan [Department of Construction, Faculty of Technical Education, University of Abant Izzet Baysal, Duzce 81100 (Turkey)

    2007-01-15

    Disasters are recurring to global problems, which results in homelessness. The affected region had economical, environmental and social problems as well. In relief and reconstruction phases, the need for integrated management appeared in order to use the national sources actively and productively. Especially housing implementations had an important role for future development of the affected region. For accelerating the reconstruction of the region and forming a sustainable community, which maintains itself socially, environmentally and economically over time; energy usage for construction should be kept to a minimum. Past research in Turkey shows that the cost of temporary houses (to be used as the short term shelter) had a ratio of 10-15% of the total expenses of whole construction activity. For saving money and protecting the environment and conserving scarce resources, the affected region must consider the option of temporary houses to meet their short and long-term need during the reconstruction process. After the end of usage, temporary houses should be able to be re-used for the same or new function. This study is a test of re-design and re-use of a temporary housing site; by using recycled materials, minimum energy and voluntary participation so that this site can finally become a permanent housing site. (author)

  1. Strategies for Preventing and Resolving Temporary Fossilization in Second Language Acquisition

    Science.gov (United States)

    Qian, Manqiu; Xiao, Zhihong

    2010-01-01

    Based on the practice of college English teaching and learning in China, the paper reviews the phenomenon and causes of the temporary fossilization in second language acquisition and offers some corresponding strategies for preventing and surmounting the obstacles in the hope of promoting the reactivation of the next climax.

  2. Temporary Transfer of Firearms From the Home to Prevent Suicide: Legal Obstacles and Recommendations.

    Science.gov (United States)

    McCourt, Alexander D; Vernick, Jon S; Betz, Marian E; Brandspigel, Sara; Runyan, Carol W

    2017-01-01

    The presence of firearms in the home increases the risk of suicide for residents. As a result, clinicians and professional organizations recommend counseling about temporary removal of firearms from the home of potentially suicidal individuals. In some states, however, firearm laws may affect the ability to easily transfer a gun temporarily to reduce suicide risk. In particular, universal background check (UBC) laws-which require a background check whenever a gun is transferred, even by non-gun dealers-may also apply to temporary transfers intended to reduce suicide risk. Clinicians have previously reported that confusion regarding state firearm laws and uncertainty over the legality of a temporary transfer have affected their ability to effectively counsel patients. We summarize the laws of all 50 states and specifically examine the relevant firearm laws of 3 representative states with UBCs and different approaches-Maryland, Colorado, and California. We identify both helpful and problematic aspects of state laws regarding temporary transfer of firearms. We provide recommendations for amending UBC laws to make it easier for clinicians and patients to temporarily transfer firearms.

  3. 75 FR 30372 - Foreign-Trade Zone 196 Temporary/Interim Manufacturing Authority ATC Logistics & Electronics...

    Science.gov (United States)

    2010-06-01

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF COMMERCE Foreign-Trade Zones Board Foreign-Trade Zone 196 Temporary/Interim Manufacturing Authority ATC Logistics... Secretary of the Foreign-Trade Zones (FTZ) Board filed an application submitted by the ATC Logistics...

  4. Allergic contact gingivostomatitis from a temporary crown made of methacrylates and epoxy diacrylates.

    Science.gov (United States)

    Kanerva, L; Alanko, K; Estlander, T

    1999-12-01

    Occupational allergic contact dermatitis caused by (meth)acrylates is common in dental personnel, whereas dental acrylic fillings and crowns have rarely been reported to cause problems in dental patients. Here we report on a 48-year-old woman who developed gingivitis, stomatitis, and perioral dermatitis after a temporary crown made of restorative, two-component material had been inserted. The manufacturer stated that the temporary crown base paste and catalyst contained three (meth)acrylates, namely, a proacrylate, which is a modification of 2,2-bis[4-(2-hydroxy-3-methacryloxypropoxy)phenyl]propane (BIS-GMA); a tricyclate, which is a saturated, aliphatic, tricyclic methacrylate; and urethane methacrylate. The manufacturer refused to give more exact information on the (meth)acrylates. Patch testing revealed that the patient was highly allergic to BIS-GMA, other epoxy diacrylates, and (meth)acrylates, as well as to the base paste and catalyst of the temporary crown. Accordingly, it was concluded that the allergic reaction was caused by BIS-GMA, or a cross-reacting (meth)acrylate, or other (meth)acrylates in the temporary crown.

  5. 75 FR 68607 - BP Canada Energy Marketing Corp. Apache Corporation; Notice for Temporary Waivers

    Science.gov (United States)

    2010-11-08

    ... Energy Regulatory Commission BP Canada Energy Marketing Corp. Apache Corporation; Notice for Temporary Waivers November 1, 2010. Take notice that on October 29, 2010, BP Canada Energy Marketing Corp. and... waivers of the Commission's capacity release regulations and policies along with the associated interstate...

  6. Temporary Catheter Insertions and Complications in Our Nephrology Clinic: Clinical Experience of One Year

    Directory of Open Access Journals (Sweden)

    Özger Akarsu

    2017-06-01

    Full Text Available Aim: Urgent hemodialysis in patients with renal insufficiency is usually provided by catheter insertions. Early complications of hemodialysis catheter insertions can increase morbidity and mortality. In this study, we investigated the characteristics of patients undergoing temporary hemodialysis catheter insertion in our nephrology clinic and complications. Methods: In this study, we reviewed the records of 151 patients in whom temporary hemodialysis catheters were inserted by the nephrologists of our clinic between August 2012 and August 2013. Demographic features, catheter insertion indications, and catheter insertion sites were assessed and complications were noted. Results: A total of 151 patients (94 female and 57 male were included in the study. The average age of the patients was 58.66±16.8 years (minimum: 17, maximum: 92. No complication was observed in 112 (74.2% patients during catheter insertions. Catheter insertion was repeated in 39 (25.8% patients for various reasons. Arterial puncture occurred in 12 (7.9% of 151 patients who had catheter insertions for the first time. None of the patients required surgical intervention. Conclusion: Temporary catheter insertions are required in patients needing urgent hemodialysis. However, they bring along the risk for many complications. Early referral of patients who require hemodialysis to nephrology clinic and application of permanent vascular interventions will reduce the need for temporary catheters and complications.

  7. Learning behavior and temporary minima of two-layer neural networks

    NARCIS (Netherlands)

    Annema, Anne J.; Hoen, Klaas; Hoen, Klaas; Wallinga, Hans

    1994-01-01

    This paper presents a mathematical analysis of the occurrence of temporary minima during training of a single-output, two-layer neural network, with learning according to the back-propagation algorithm. A new vector decomposition method is introduced, which simplifies the mathematical analysis of

  8. Using the McDaniels Career Transitions Considerations (1991) (Modified) Form with Potential Temporary Employees.

    Science.gov (United States)

    Preston, Debra S.

    With the many layoffs and downsizing of companies during the 1990s, many displaced workers have turned to temporary employment to earn a living while looking for permanent employment. Others have adopted "temping" as a more long-term work style. Although it may not be possible to predict whether an individual will find satisfaction or…

  9. USAGE OF PASTE FOR TEMPORARY PLACEMENT IN THE TREATMENT OF CHRONIC APICAL PERIODONTITIS

    Directory of Open Access Journals (Sweden)

    A.V. Borysenko

    2012-03-01

    Full Text Available Summary: The aim of the present investigation was usage of medicamental paste with antibacterial and regeneration action for temporary placement in the treatment of chronic apical periodontitis. Materials and method: The medicamental paste for temporary placement of root canals consists of a mixture of metronidazole, Enterosgel (Silm and Alflutop (Biotehnos S.A., Romania. Thë paste was used for the treatment of 30 teeth with chronic apical periodontitis. Final obturation of the root canals was performed with gutta percha cones and sealer. The efficiency of the treatment was appreciated after examination on the basis of clinical and radiographic findings. Results: During the treatment of the 30 teeth, no exacerbations of the pathological process were recorded. Pain after obturation of the root canals was revealed in only 6 (20% of the treated teeth. No pain, pathologic changes of gingiva, good mastication efficiency in all teeth after treatment were revealed. Conclusions: The high clinical efficiency of the medicamental paste with antibacterial and regeneration action at the level of temporary root canals placement in the treatment of chronic apical periodontitis was shown. Keywords: chronic apical periodontitis, medicamental paste for temporary root canals placement, metronidazole, Enterosgel (Silm and Alflutop (Biotehnos S.A., Romania

  10. 77 FR 25865 - Amendment to the International Traffic in Arms Regulations: Exemption for Temporary Export of...

    Science.gov (United States)

    2012-05-02

    ... temporary export of chemical agent protective gear for personal use. The exemption for body armor is amended to also cover helmets when they are included with the body armor. An exemption for firearms and ammunition is clarified by removing certain extraneous language that does not change the meaning of the...

  11. 8 CFR 244.5 - Temporary treatment benefits for eligible aliens.

    Science.gov (United States)

    2010-01-01

    ... 8 Aliens and Nationality 1 2010-01-01 2010-01-01 false Temporary treatment benefits for eligible aliens. 244.5 Section 244.5 Aliens and Nationality DEPARTMENT OF HOMELAND SECURITY IMMIGRATION... for eligible aliens. (a) Prior to the registration period. Prior to the registration period...

  12. The Effects of Temporary Mood States on Views of the World and the Future.

    Science.gov (United States)

    Madigan, Robert; Bollenbach, Amy

    The cognitive theory of depression advanced by Beck proposes that a negative view of the self, the world and the future is a condition that is responsible for depression. Recent data, however, have suggested that the relationship between cognition and affect is a reciprocal one in which each influences the other. Temporary mood states were induced…

  13. Comparison of hardness of three temporary filling materials cured by two light-curing devices.

    Science.gov (United States)

    Bodrumlu, E; Koçak, M M; Hazar Bodrumlu, E; Ozcan, S; Koçak, S

    2014-01-01

    Polymerization ability of light-curing devices can affect the light-cured material hardness. The purpose of the present study was to evaluate and compare the hardness of three temporary filling materials that had been light-cured by either a light emitting diode (LED) or a halogen light-curing unit. The temporary filling materials, First Fill, Voco Clip and Bioplic, were placed in wells in a Teflon plate. The 24 specimens of each material were divided into two groups (N.=12/group) for photo-activation by either of the two light-curing units. The LED or halogen device was applied for 40s to the top surface of each specimen. A Knoop hardness test was performed on the top and bottom surface of each specimen, with five measurements per specimen. The highest hardness values for both the LED and halogen treated groups were observed for First Fill and the lowest values were for Voco Clip in top and bottom surfaces. The hardness obtained for the three materials with the halogen unit were significantly higher than the values obtained with the LED unit in both surfaces (Phardness values on the top and bottom surfaces than Voco Clip and Bioplic temporary materials. The hardness of light-cured temporary filling materials can be affected by the type of light-curing unit.

  14. Microleakage of Cavit temporary filling material in endodontic access cavities in monkey teeth.

    Science.gov (United States)

    Lamers, A C; Simon, M; van Mullem, P J

    1980-06-01

    Sealing properties of Cavit-W temporary filling material were tested in vivo in the control group of a usage experiment in which root canal disinfectants were studied. Histologic examination (Brown and Brenn staining) of the root canals showed a statistical significance in the occurrence of microorganisms with increase in time. Microleakage past the filling material was considered to be responsible.

  15. Coronal microleakage of four endodontic temporary restorative materials: an in vitro study.

    Science.gov (United States)

    Ciftçi, Aytül; Vardarli, Didem Argun; Sönmez, Işil Saroğlu

    2009-10-01

    The purpose of this study was to compare the sealing ability of the temporary restorative materials Cavit-G, Ketac Molar Easymix, and IRM with a new light-curing temporary material, Clip, using a methylene blue dye penetration test. Endodontic access preparations were prepared in 48 intact extracted human premolars. The teeth were divided into 6 groups, including positive and negative control groups. After access preparation, cotton pellets were placed in the pulp chamber so that the space remaining for the restoration was 4 mm. After thermal cycling for 500 cycles (5 degrees C-55 degrees C), the teeth were immersed in 2% methylene blue solution at neutral (pH = 7.0) in an incubator for leakage assessment. The teeth were sectioned, and the greatest depth of dye penetration was recorded. Marginal leakage was evaluated with a stereomicroscope. Positive control sections exhibited complete dye penetration, and negative controls had none. In the experimental groups, the differences in the leakage scores of the Clip and Cavit-G groups and the other 2 groups were very marked. There were no statistically significant difference in marginal leakage between Cavit-G and Clip. The new light-curing temporary material Clip seals against marginal leakage as effectively as Cavit when used as a temporary filling.

  16. 41 CFR Appendix to Subchapter D - Temporary Regulations Federal Property Management Regulations; Interim Rule D-1

    Science.gov (United States)

    2010-07-01

    ... 41 Public Contracts and Property Management 2 2010-07-01 2010-07-01 true Temporary Regulations Federal Property Management Regulations; Interim Rule D-1 Appendix to Subchapter D Public Contracts and Property Management Federal Property Management Regulations System FEDERAL PROPERTY MANAGEMENT REGULATIONS...

  17. 26 CFR 1.382-7T - Built-in gains and losses (temporary).

    Science.gov (United States)

    2010-04-01

    ... 26 Internal Revenue 4 2010-04-01 2010-04-01 false Built-in gains and losses (temporary). 1.382-7T Section 1.382-7T Internal Revenue INTERNAL REVENUE SERVICE, DEPARTMENT OF THE TREASURY (CONTINUED) INCOME TAX (CONTINUED) INCOME TAXES Insolvency Reorganizations § 1.382-7T Built-in gains and losses...

  18. Impact of a Temporary Food Shortage on Children and Their Mothers.

    Science.gov (United States)

    McDonald, Mary Alice; And Others

    1994-01-01

    Evaluated the effects of a drought and temporary food shortage on 248 Kenyan mother-child dyads' energy intake, weight, and behaviors. Found that school-age children were affected more negatively than toddlers, showing significant declines in energy intake, age-corrected weight, activity on the playground, and classroom attention. Behavior…

  19. 75 FR 61577 - Wage Methodology for the Temporary Non-Agricultural Employment H-2B Program

    Science.gov (United States)

    2010-10-05

    ... Process for Temporary Employment in Occupations other than Agriculture or Registered Nursing in the United... models of labor supply and demand, an increase in the wage rate represents an increased production cost to employers leading to a reduction in the demand for labor. Because production costs increase with...

  20. Short- and long-term unemployment: How do temporary layoffs affect this distinction?

    DEFF Research Database (Denmark)

    Jensen, Peter; Svarer, Michael

    2003-01-01

    In this paper, we provide new evidence on how to model unemployment durations in the presence of temporary layoffs. Two different types of econometric models are used: the multiple phase duration model and the competing risks model. Special attention is paid to the possibility of time-varying or ...

  1. Crash test and evaluation of temporary wood sign support system for large guide signs.

    Science.gov (United States)

    2016-07-01

    The objective of this research task was to evaluate the impact performance of a temporary wood sign support : system for large guide signs. It was desired to use existing TxDOT sign hardware in the design to the extent possible. : The full-scale cras...

  2. Reciprocity of temporary and permanent workers: an exploratory study in an industrial company.

    Science.gov (United States)

    Lopes, Silvia; Chambel, Maria José

    2012-11-01

    The increasing use of temporary work prompts the need to understand to what degree workers with this type of contract differ from permanent workers as to the relationship they establish with the organization they work for. This study used a sample of temporary workers (N = 78) and permanent workers (N = 196) within the same company of electronics in Portugal. The results show that, regardless of the type of contract, the perception of human resource practices was related to the perception of psychological contract fulfillment by the company. Additionally and according to the norm of reciprocity, we verified that when workers thought the company was fulfilling its obligations they responded favorably showing more affective commitment towards the company. However, we found differences between these two groups of workers: for the permanent performance appraisal, training and rewards were human resources practices that were significantly related to psychological contract fulfillment, while for the temporary ones there weren't any specific practices that had a significant relationship with that variable. The practical implications of these findings for the management of temporary workers are discussed.

  3. 76 FR 57645 - Special Local Regulations for Marine Events; Temporary Change of Dates for Recurring Marine...

    Science.gov (United States)

    2011-09-16

    ... temporary line in the Table to Sec. 100.501 was wrong. This Correction fixes that error. The date and all.... ] FOR FURTHER INFORMATION CONTACT: For information about this correction, contact Kevin d'Eustachio....mil . For information about the original regulation, contact BOSN3 Joseph M. Edge, Coast Guard Sector...

  4. 75 FR 5115 - Temporary Concession Contract for Lake Mead National Recreation Area, AZ/NV

    Science.gov (United States)

    2010-02-01

    ... concession contract for Lake Mead National Recreation Area. SUMMARY: Pursuant to 36 CFR 51.24, public notice... National Park Service Temporary Concession Contract for Lake Mead National Recreation Area, AZ/NV AGENCY... the conduct of certain visitor services within Lake Mead National Recreation Area, Arizona and Nevada...

  5. 76 FR 35909 - Temporary Concession Contract for Big South Fork National Recreation Area, TN/KY

    Science.gov (United States)

    2011-06-20

    ... National Recreation Area, TN/KY. SUMMARY: Pursuant to 36 CFR 51.24, public notice is hereby given that the...] Temporary Concession Contract for Big South Fork National Recreation Area, TN/KY AGENCY: National Park... visitor services within Big South Fork National Recreation Area, Tennessee and Kentucky, for a term not to...

  6. 75 FR 67093 - Iceberg Water Deviating From Identity Standard; Temporary Permit for Market Testing

    Science.gov (United States)

    2010-11-01

    ... section 401 of the Federal Food, Drug, and Cosmetic Act (21 U.S.C. 341), FDA is giving notice that a...), Canada J3Z 1G4. This permit covers limited interstate marketing tests of products identified as ``GLACE... problems, and assess commercial feasibility. This permit provides for the temporary marketing of 153,090...

  7. 75 FR 57499 - Notice of Temporary Closure of Public Lands in Fergus County, MT

    Science.gov (United States)

    2010-09-21

    ... the interim, the mixture of heavy equipment, a narrow temporary road, logging operations, steep slopes, tumbling rocks, and other debris in the construction/logging area make the area unsafe for public use... wildland fire. The BLM has contracted for road construction into the damaged area, salvage logging, and...

  8. From the social shaping of technology to the staging of temporary spaces of innovation

    DEFF Research Database (Denmark)

    Clausen, Christian; Gunn, Wendy

    2014-01-01

    This paper addresses recent developments within the social shaping perspective, specifically the forward-looking and political dimensions of intervening in processes of innovation. With a focus on the concept of ‘temporary spaces’ as an analytical framework we present a study of a case on partici......This paper addresses recent developments within the social shaping perspective, specifically the forward-looking and political dimensions of intervening in processes of innovation. With a focus on the concept of ‘temporary spaces’ as an analytical framework we present a study of a case...... on participatory innovation concerned with indoor climate practices in the building sector. Based on an analysis of the travel and uptake of narratives derived from field studies in industrial and research environments, we discuss the role of intermediaries such as ethnographic provocations concerning user...... practices in the staging of these temporary spaces. While the direct uptake of qualitative knowledge on user practice in the engineering worlds of indoor climate is limited, the paper highlights the role of staging temporary spaces and intermediary objects in collaboration with stakeholders as a way...

  9. From the Social Shaping of Technology to the Staging of Temporary Spaces of Innovation

    DEFF Research Database (Denmark)

    Clausen, Christian; Gunn, Wendy

    2015-01-01

    This paper addresses recent developments within the social shaping perspective, specifically the forward-looking and political dimensions of intervening in processes of innovation. With a focus on the concept of 'temporary spaces’ as an analytical framework we present a study of a case on partici......This paper addresses recent developments within the social shaping perspective, specifically the forward-looking and political dimensions of intervening in processes of innovation. With a focus on the concept of 'temporary spaces’ as an analytical framework we present a study of a case...... on participatory innovation concerned with indoor climate practices in the building sector. Based on an analysis of the travel and uptake of narratives derived from field studies in industrial and research environments, we discuss the role of intermediaries such as ethnographic provocations concerning user...... practices in the staging of these temporary spaces. While the direct uptake of qualitative knowledge on user practice in the engineering worlds of indoor climate is limited, the paper highlights the role of staging temporary spaces and intermediary objects in collaboration with stakeholders as a way...

  10. Evidence of Hydroperiod Shortening in a Preserved System of Temporary Ponds

    Directory of Open Access Journals (Sweden)

    Carola Gómez-Rodríguez

    2010-06-01

    Full Text Available Based on field data simultaneous with Landsat overpasses from six different dates, we developed a robust linear model to predict subpixel fractions of water cover. The model was applied to a time series of 174 Landsat TM and ETM+ images to reconstruct the flooding regime of a system of small temporary ponds and to study their spatio-temporal changes in a 23-year period. We tried to differentiate natural fluctuations from trends in hydrologic variables (i.e., hydroperiod shortening that may threaten the preservation of the system. Although medium-resolution remote sensing data have rarely been applied to the monitoring of small-sized wetlands, this study evidences its utility to understand the hydrology of temporary ponds at a local scale. We show that the temporary ponds in Doñana National Park constitute a large and heterogeneous system with high intra and inter-annual variability. We also evidence that the conservation value of this ecosystem is threatened by the observed tendency to shorter annual hydroperiods in recent years, probably due to aquifer exploitation. This system of temporary ponds deserves special attention for the high density and heterogeneity of natural ponds, not common in Europe. For this reason, management decisions to avoid its destruction or degradation are critical.

  11. Influence of Screw Length and Bone Thickness on the Stability of Temporary Implants

    Science.gov (United States)

    Fernandes, Daniel Jogaib; Elias, Carlos Nelson; Ruellas, Antônio Carlos de Oliveira

    2015-01-01

    The purpose of this work was to study the influence of screw length and bone thickness on the stability of temporary implants. A total of 96 self-drilling temporary screws with two different lengths were inserted into polyurethane blocks (n = 66), bovine femurs (n = 18) and rabbit tibia (n = 12) with different cortical thicknesses (1 to 8 mm). Screws insertion in polyurethane blocks was assisted by a universal testing machine, torque peaks were collected by a digital torquemeter and bone thickness was monitored by micro-CT. The results showed that the insertion torque was significantly increased with the thickness of cortical bone from polyurethane (p < 0.0001), bovine (p = 0.0035) and rabbit (p < 0.05) sources. Cancellous bone improved significantly the mechanical implant stability. Insertion torque and insertion strength was successfully moduled by equations, based on the cortical/cancellous bone behavior. Based on the results, insertion torque and bone strength can be estimate in order to prevent failure of the cortical layer during temporary screw placement. The stability provided by a cortical thickness of 2 or 1 mm coupled to cancellous bone was deemed sufficient for temporary implants stability. PMID:28793582

  12. 26 CFR 1.469-4T - Definition of activity (temporary).

    Science.gov (United States)

    2010-04-01

    ... of business and rental operations.) In general, these rules are divided into three groups: (i) Rules... (temporary). (a) Overview—(1) Purpose and effect of overview. This paragraph (a) contains a general description of the rules contained in this section and is intended solely as an aid to readers. The provisions...

  13. 26 CFR 1.1301-1T - Averaging of farm and fishing income (temporary).

    Science.gov (United States)

    2010-04-01

    ... income (temporary). (a) Overview. An individual engaged in a farming or fishing business may make a farm... averaging, over the prior three-year period (base years), all or a portion of the individual's current year... guidance, see § 1.1301-1(d)(1) through (3)(i). (ii) Example. The rules of this paragraph (d)(3) are...

  14. Temporary threshold shifts from exposures to equal equivalent continuous A-weighted sound pressure level

    DEFF Research Database (Denmark)

    Ordoñez, Rodrigo Pizarro; Hammershøi, Dorte

    2014-01-01

    According to existing methods for the assessment of hearing damage, signals with the same A-weighted equivalent level should pose the same hazard to the auditory system. As a measure of hazard, it is assumed that Temporary Thresholds Shifts (TTS) reflect the onset of alterations to the hearing sy...

  15. Time and frequency characteristics of temporary threshold shifts caused by pure tone exposures

    DEFF Research Database (Denmark)

    Ordoñez, Rodrigo Pizarro; Hammershøi, Dorte

    2011-01-01

    The time-frequency characteristics of Temporary Threshold Shifts (TTS) caused by pure tones were determined using the Békésy audiometric method with narrow-band noise of short duration as the probe stimuli. Two experiments were done using exposures of 3 min at 100 dB above threshold. In the first...

  16. 75 FR 30900 - Fisker Automotive; Receipt of Application for Temporary Exemption From Advanced Air Bag...

    Science.gov (United States)

    2010-06-02

    ... National Highway Traffic Safety Administration Fisker Automotive; Receipt of Application for Temporary... Protection. SUMMARY: In accordance with the procedures in 49 CFR part 555, Fisker Automotive Corporation has... INFORMATION: Fisker Automotive (Fisker) has submitted a petition for exemption from certain requirements of...

  17. 75 FR 57549 - Fisker Automotive; Grant of Application for Temporary Exemption From Advanced Air Bag...

    Science.gov (United States)

    2010-09-21

    ... National Highway Traffic Safety Administration Fisker Automotive; Grant of Application for Temporary... Protection. SUMMARY: This notice grants the petition of Fisker Automotive Corporation (Fisker) from certain... Fisker Automotive was established in September 2007 as a joint venture of Fisker Coachbuild, LLC and...

  18. 78 FR 40758 - Agency Information Collection Activities: Application for Temporary Protected Status, Form I-821...

    Science.gov (United States)

    2013-07-08

    ...: Application for Temporary Protected Status. (3) Agency form number, if any, and the applicable component of... evidence to English, and translating English form instructions into the applicant's native language. We... English translations of their supporting documents. The percentage of supporting documents for each...

  19. 23 CFR Appendix B to Part 1235 - Sample Temporary Removable Windshield Placard

    Science.gov (United States)

    2010-04-01

    ... 23 Highways 1 2010-04-01 2010-04-01 false Sample Temporary Removable Windshield Placard B Appendix B to Part 1235 Highways NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION AND FEDERAL HIGHWAY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION GUIDELINES UNIFORM SYSTEM FOR PARKING FOR PERSONS WITH DISABILITIES Pt. 1235, App. B Appendix B to Part 1235...

  20. Long-term follow-up of children thought to have temporary brittle bone disease

    Directory of Open Access Journals (Sweden)

    Paterson CR

    2011-06-01

    Full Text Available Colin R Paterson1, Elizabeth A Monk21Department of Medicine (retired, 2School of Accounting and Finance, University of Dundee, Dundee, ScotlandBackground: In addition to nonaccidental injury, a variety of bone disorders may underlie the finding of unexplained fractures in young children. One controversial postulated cause is temporary brittle bone disease, first described in 1990.Methods: Eighty-five patients with fractures showing clinical and radiological features of temporary brittle bone disease were the subject of judicial hearings to determine whether it was appropriate for them to return home. Sixty-three patients did, and follow-up information was available for 61 of these. The mean follow-up period was 6.9 years (range 1–17, median 6.Results: We found that none of the children had sustained any further injuries that were thought to represent nonaccidental injury; no child was re-removed from home. Three children had fractures. In each case there was general agreement that the fractures were accidental. Had the original fractures in these children been the result of nonaccidental injury, it would have been severe and repeated; the average number of fractures was 9.1.Conclusion: The fact that no subsequent suspicious injuries took place after return home is consistent with the view that the fractures were unlikely to have been caused by nonaccidental injury, and that temporary brittle bone disease is a distinctive and identifiable disorder.Keywords: fractures, osteogenesis imperfecta, temporary brittle bone disease, nonaccidental injury

  1. 22 CFR 41.31 - Temporary visitors for business or pleasure.

    Science.gov (United States)

    2010-04-01

    ... 22 Foreign Relations 1 2010-04-01 2010-04-01 false Temporary visitors for business or pleasure. 41.31 Section 41.31 Foreign Relations DEPARTMENT OF STATE VISAS VISAS: DOCUMENTATION OF NONIMMIGRANTS... of a recreational character, including tourism, amusement, visits with friends or relatives, rest...

  2. 47 CFR 5.61 - Procedure for obtaining a special temporary authorization.

    Science.gov (United States)

    2010-10-01

    ... 47 Telecommunication 1 2010-10-01 2010-10-01 false Procedure for obtaining a special temporary authorization. 5.61 Section 5.61 Telecommunication FEDERAL COMMUNICATIONS COMMISSION GENERAL EXPERIMENTAL RADIO...) Frequency(ies) desired. (9) Maximum effective radiated power (ERP) or equivalent isotrophically radiated...

  3. 14 CFR 91.137 - Temporary flight restrictions in the vicinity of disaster/hazard areas.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 2 2010-01-01 2010-01-01 false Temporary flight restrictions in the vicinity of disaster/hazard areas. 91.137 Section 91.137 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION (CONTINUED) AIR TRAFFIC AND GENERAL OPERATING RULES GENERAL OPERATING AND FLIGHT RULES Flight Rules General §...

  4. Medical causes of temporary or definitive leaves from a French counterterrorist unit pre-internship.

    Science.gov (United States)

    Thabouillot, Oscar; Roffi, R; Bertho, K; Ramon, F; Commeau, D; Fressancourt, Y; Quemeneur, E; Roche, N-C; Dubourg, O

    2017-04-01

    Each year, the French Special Weapons And Tactics team, Groupe d'Intervention de la Gendarmerie Nationale, recruits new members through a physically demanding 8-week selection process. The goal of this study is to estimate the incidence and the causes for temporary or final interruptions during this process for medical reasons. All of the candidates for the November 2015 selection process were included in this prospective study. The number and reasons for temporary or final interruptions were documented by military general practitioners. The applicants were 48 law enforcement professionals (2 women, mean age 29.4 years, range 22-35). In 14 cases, a temporary interruption was required and in five cases the selection process prematurely ended. Fifty-two per cent of the temporary interruptions were due to sprains, tendinopathies, fractures or muscle tears, 11% were due to burns, wounds or subcutaneous bruises, 16% were due to cranial trauma and 21% were due to medical causes. The high prevalence of minor traumatology that we observed is similar to the ones observed in other cohorts describing initial training for military personnel in the conventional forces. However, the presence of other pathologies in our study, such as cranial trauma or medical causes, is due to the specificity of this internship selection granting access to an elite unit. Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://www.bmj.com/company/products-services/rights-and-licensing/.

  5. Influence of Screw Length and Bone Thickness on the Stability of Temporary Implants

    Directory of Open Access Journals (Sweden)

    Daniel Jogaib Fernandes

    2015-09-01

    Full Text Available The purpose of this work was to study the influence of screw length and bone thickness on the stability of temporary implants. A total of 96 self-drilling temporary screws with two different lengths were inserted into polyurethane blocks (n = 66, bovine femurs (n = 18 and rabbit tibia (n = 12 with different cortical thicknesses (1 to 8 mm. Screws insertion in polyurethane blocks was assisted by a universal testing machine, torque peaks were collected by a digital torquemeter and bone thickness was monitored by micro-CT. The results showed that the insertion torque was significantly increased with the thickness of cortical bone from polyurethane (p < 0.0001, bovine (p = 0.0035 and rabbit (p < 0.05 sources. Cancellous bone improved significantly the mechanical implant stability. Insertion torque and insertion strength was successfully moduled by equations, based on the cortical/cancellous bone behavior. Based on the results, insertion torque and bone strength can be estimate in order to prevent failure of the cortical layer during temporary screw placement. The stability provided by a cortical thickness of 2 or 1 mm coupled to cancellous bone was deemed sufficient for temporary implants stability.

  6. 14 CFR 91.144 - Temporary restriction on flight operations during abnormally high barometric pressure conditions.

    Science.gov (United States)

    2010-01-01

    ... 14 Aeronautics and Space 2 2010-01-01 2010-01-01 false Temporary restriction on flight operations during abnormally high barometric pressure conditions. 91.144 Section 91.144 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION (CONTINUED) AIR TRAFFIC AND GENERAL...

  7. 77 FR 4623 - Wheego Electric Cars, Inc. Receipt of Petition for Temporary Exemption From the Electronic...

    Science.gov (United States)

    2012-01-30

    ... National Highway Traffic Safety Administration Wheego Electric Cars, Inc. Receipt of Petition for Temporary....S.C. 30113 and the procedures in 49 CFR Part 555, Wheego Electric Cars, Inc. (Wheego) submitted a...-electric passenger car, the two-door, two- seat LiFe model. Wheego also states that it is developing a four...

  8. 78 FR 12138 - Greenkraft Inc.; Receipt of Application for Temporary Exemption From FMVSS No. 108

    Science.gov (United States)

    2013-02-21

    ... Air Act establish exhaust emissions thresholds for heavy-duty low-emission vehicles. These exhaust... vehicle that is the subject of the application is a low emissions vehicle. The Air Resources Board... natural gas powered vehicles. D. Public Interest Greenkraft states that granting the temporary exemption...

  9. 75 FR 16000 - Temporary Employment of Foreign Workers in the United States

    Science.gov (United States)

    2010-03-31

    ... Employment and Training Administration 20 CFR Part 655 Temporary Employment of Foreign Workers in the United..., for which an employer desires to employ nonimmigrant foreign workers, and (ii) whether the employment... unless the employment of the foreign worker in the job opportunity will not adversely affect the wages or...

  10. 77 FR 37072 - Filing Location for Foreign Labor Certification Program Temporary Program Applications; Change of...

    Science.gov (United States)

    2012-06-20

    ... (INA) concerning foreign workers seeking admission to the United States (U.S.) in order to work under... available, willing, and qualified to perform the work, and that the wage offered to the foreign worker(s... Foreign Labor Certification Program Temporary Program Applications; Change of Address AGENCY: Employment...

  11. 76 FR 21426 - Union Pacific Railroad Company-Temporary Trackage Rights Exemption-BNSF Railway Company

    Science.gov (United States)

    2011-04-15

    ... Surface Transportation Board Union Pacific Railroad Company--Temporary Trackage Rights Exemption--BNSF... rights described in Docket No. FD 34554 (Sub-No. 14) \\1\\ to permit the trackage rights to expire on or about December 18, 2011, in accordance with the agreement of the parties,\\2\\ subject to the employee...

  12. 77 FR 71680 - BNSF Railway Company-Temporary Trackage Rights Exemption-Union Pacific Railroad Company

    Science.gov (United States)

    2012-12-03

    ... Surface Transportation Board BNSF Railway Company--Temporary Trackage Rights Exemption--Union Pacific... rights described in Docket No. FD 35676 \\1\\ to permit the trackage rights to expire at midnight on December 31, 2012, in accordance with the agreement of the parties, subject to the employee protective...

  13. 75 FR 12329 - Union Pacific Railroad Company-Temporary Trackage Rights Exemption-BNSF Railway Company

    Science.gov (United States)

    2010-03-15

    ... Surface Transportation Board Union Pacific Railroad Company--Temporary Trackage Rights Exemption--BNSF... rights described in STB Finance Docket No. 34554 (Sub-No. 12) \\1\\ to permit the trackage rights to expire... employee protective conditions set forth in Oregon Short Line R. Co.--Abandonment--Goshen, 360 I.C.C. 91...

  14. Vacuum with mesh is a feasible temporary closure device after fascial dehiscence

    DEFF Research Database (Denmark)

    Bjørsum-Meyer, Thomas; Skarbye, Mona; Jensen, Kenneth Højsgaard

    2013-01-01

    INTRODUCTION: The open abdomen is a challenging condition and a temporary abdominal closure device is required in order to protect the intra-abdominal viscera. We aimed to evaluate the feasibility of a recent device: vacuum-assisted wound closure and mesh-mediated fascial traction (VAWCM) after f...

  15. Training Is an Investment with Return in Temporary Workers: A Social Exchange Perspective

    Science.gov (United States)

    Chambel, Maria Jose; Sobral, Filipa

    2011-01-01

    Purpose: The purpose of this paper is to analyse whether a social exchange relationship between temporary workers and organizations is possible. The authors aim to consider whether, when training is perceived by an employee as an organizational practice that promotes his or her employability, this entails a social exchange relationship.…

  16. The Client Company Marginally Utilises the Knowledge of Highly Skilled Temporary Staff

    Science.gov (United States)

    Augustsson, Gunnar

    2016-01-01

    This study is based on the presumption that there is often an underuse of temporary staff in client companies (CC) with highly skilled professionals. The study combines theories of the flexible organisation and a sociocultural perspective on learning within the framework of an inter-organisational context. The data are based partly on 17…

  17. 77 FR 2990 - Extension of the Designation of El Salvador for Temporary Protected Status and Automatic...

    Science.gov (United States)

    2012-01-20

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF HOMELAND SECURITY U.S. Citizenship and Immigration Services RIN 1615-ZB06 Extension of the Designation of El Salvador for Temporary Protected Status and Automatic Extension of Employment Authorization Documentation...

  18. 77 FR 1710 - Extension of the Designation of El Salvador for Temporary Protected Status and Automatic...

    Science.gov (United States)

    2012-01-11

    ... Salvador for Temporary Protected Status and Automatic Extension of Employment Authorization Documentation...- registrants at local offices. ] Am I eligible to receive an automatic 6-month extension of my current EAD from March 9, 2012 through September 9, 2012? You will receive an automatic 6-month extension of your EAD if...

  19. Qualitative haemodynamic validation of a percutaneous temporary aortic valve: a proof of concept study.

    Science.gov (United States)

    Ho, P C

    2011-02-01

    The concept of temporary aortic valves has been suggested in the clinical settings of acute aortic regurgitation and transcatheter aortic valve replacement procedure (TAVR). In TAVR, suggestions have been made to pre-treat or remove the diseased aortic valve prior to implantation of the replacement valve. A successful temporary aortic valve must demonstrate the ability to prevent life-threatening haemodynamics of massive aortic regurgitation. A novel temporary aortic valve (TAV) design, comprised of inflatable balloon elements as a check-valve, can readily be deployed and retrieved via a catheter-system. A simple flow model is set up to test the TAV's performance in severe aortic regurgitation. With induced aortic regurgitation, placement of the TAV is found to increase the distal aortic diastolic pressure, to reduce the widened pulse pressure, to protect proximal aorta-left ventricle from diastolic pressure elevation and to reduce the aortic regurgitant volume. In conclusion, continued development of the TAV system can lead to a successful temporary aortic valve to be used in various appropriate clinical settings.

  20. 75 FR 37300 - Correction of Code of Federal Regulations: Removal of Temporary Listing of Benzylfentanyl and...

    Science.gov (United States)

    2010-06-29

    ... analgesic effect, indicated that the compounds were both essentially inactive, with no evidence of abuse... From the Federal Register Online via the Government Publishing Office ] DEPARTMENT OF JUSTICE Drug... of Temporary Listing of Benzylfentanyl and Thenylfentanyl as Controlled Substances AGENCY: Drug...

  1. 75 FR 79961 - Temporary Suspension of Certain Oil Spill Response Time Requirements To Support Deepwater Horizon...

    Science.gov (United States)

    2010-12-21

    ...; 2050-AG63 Temporary Suspension of Certain Oil Spill Response Time Requirements To Support Deepwater... Mobile Offshore Drilling Unit (MODU) ``Deepwater Horizon'' exploded and sank, causing an unprecedented... the Deepwater Horizon SONS determined, after consulting with appropriate Federal and State agencies...

  2. 26 CFR 1.864-8T - Treatment of related person factoring income (temporary).

    Science.gov (United States)

    2010-04-01

    ... 26 Internal Revenue 9 2010-04-01 2010-04-01 false Treatment of related person factoring income..., 1996 § 1.864-8T Treatment of related person factoring income (temporary). (a) Applicability—(1) General... the factoring business. Y resells the receivable to FPHC. Because FPHC has indirectly acquired a...

  3. effect of temporary drought at different growth stages on snap bean

    African Journals Online (AJOL)

    ACSS

    In order to impose temporary drought stress at each specific growth stage, the moisture level was maintained at 50% FC for 5 days by weighing pots on a digital balance, and adding the deficit water when the moisture content decreased below. 50% of FC each day. Because cultivars had different days to maturity, drought ...

  4. Psychological model for judicial decision making in emergency or temporary child placement.

    Science.gov (United States)

    Ballou, M; Barry, J; Billingham, K; Boorstein, B W; Butler, C; Gershberg, R; Heim, J; Lirianio, D; McGovern, S; Nicastro, S; Romaniello, J; Vazquez-Nuttall, K; White, C

    2001-10-01

    In emergencies, family court judges must often make rapid decisions, without benefit of thorough information, that have significant impact on people's lives. Action-oriented research was used to develop a model that would bring psychosocial factors to the legal system for the purpose of enhancing the judicial decision-making process in emergency and temporary child placement cases.

  5. 19 CFR 122.188 - Issuance of temporary Customs access seal.

    Science.gov (United States)

    2010-04-01

    ... 19 Customs Duties 1 2010-04-01 2010-04-01 false Issuance of temporary Customs access seal. 122.188 Section 122.188 Customs Duties U.S. CUSTOMS AND BORDER PROTECTION, DEPARTMENT OF HOMELAND SECURITY; DEPARTMENT OF THE TREASURY AIR COMMERCE REGULATIONS Access to Customs Security Areas § 122.188 Issuance of...

  6. Working conditions, work life and quality of life of the temporary ...

    African Journals Online (AJOL)

    Working conditions, work life and quality of life of the temporary support staff involved with telematic learning. A Marx, M Greeff, M P Koen. Abstract. Transformation in the South African higher educational system compelled residential universities to introduce alternative education such as distance education (Department of ...

  7. 76 FR 46216 - Federal Travel Regulation (FTR): Temporary Duty (TDY) Travel Allowances: Notice of Public Meeting...

    Science.gov (United States)

    2011-08-02

    ... ADMINISTRATION 41 CFR Chapter 301 Federal Travel Regulation (FTR): Temporary Duty (TDY) Travel Allowances: Notice... meeting to industry and the general public in an effort to streamline travel policies, incorporated travel... J. Flynn, Deputy Director, Office of Travel, Transportation & Asset Management. BILLING CODE 6820-14...

  8. 76 FR 63355 - Proposed Information Collection (Regulation on Application for Fisher Houses and Other Temporary...

    Science.gov (United States)

    2011-10-12

    ... Information Collection (Regulation on Application for Fisher Houses and Other Temporary Lodging and VHA Fisher House Application); Comment Request AGENCY: Veterans Health Administration, Department of Veterans... use of other forms of information technology. Title: Regulation on Application for Fisher Houses and...

  9. 77 FR 4758 - Foreign-Trade Zone 59-Lincoln, Nebraska, Application for Temporary/Interim Manufacturing...

    Science.gov (United States)

    2012-01-31

    ... Manufacturing Authority, Novartis Consumer Health, Inc. (Pharmaceutical Product Manufacturing), Lincoln, NE An... Lincoln Foreign-Trade Zone, Inc., grantee of FTZ 59, requesting temporary/interim manufacturing (T/ IM... request to the FTZ Board for FTZ manufacturing authority beyond a two-year period, which may include...

  10. 26 CFR 1.892-6T - Income of international organizations (temporary regulations).

    Science.gov (United States)

    2010-04-01

    ... 26 Internal Revenue 9 2010-04-01 2010-04-01 false Income of international organizations (temporary... International Organizations Immunities Act (22 U.S.C. 288) (the provisions of which are set forth in paragraph (b)(3) of § 1.893-1), the income of an international organization (as defined in section 7701(a)(18...

  11. 26 CFR 1.861-10T - Special allocations of interest expense (temporary).

    Science.gov (United States)

    2010-04-01

    ... operation of the hotel involves services the value of which is significant in relation to amounts paid to... services incidental to the occupancy of hotel rooms. Accordingly, the cash flow from the hotel is... (temporary). 1.861-10T Section 1.861-10T Internal Revenue INTERNAL REVENUE SERVICE, DEPARTMENT OF THE...

  12. Examining the Role of Perceived Leader Behavior on Temporary Employees' Organizational Commitment and Citizenship Behavior

    Science.gov (United States)

    Djibo, Idriss J. A.; Desiderio, Katie P.; Price, Noriece M.

    2010-01-01

    The attention given to the contingent segment of the workforce has significantly increased over the past decade. Investigative topics include the correlates of temporary employee work attitudes and behaviors. This study used a correlational design to examine leader behaviors outlined by the path-goal theory of leadership, as perceived by temporary…

  13. 21 CFR 509.30 - Temporary tolerances for polychlorinated biphenyls (PCB's).

    Science.gov (United States)

    2010-04-01

    ... (PCB's). 509.30 Section 509.30 Food and Drugs FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND....30 Temporary tolerances for polychlorinated biphenyls (PCB's). (a) Polychlorinated biphenyls (PCB's..., PCB's have become a persistent and ubiquitous contaminant in the environment. As a result, certain...

  14. 17 CFR 3.44 - Temporary licensing of applicants for guaranteed introducing broker registration.

    Science.gov (United States)

    2010-04-01

    ... applicants for guaranteed introducing broker registration. 3.44 Section 3.44 Commodity and Securities... applicants for guaranteed introducing broker registration. (a) Notwithstanding any other provisions of these... grant a temporary license to any applicant for registration as an introducing broker upon the...

  15. 26 CFR 1.6411-3T - Allowance of adjustments (temporary).

    Science.gov (United States)

    2010-04-01

    ... 26 Internal Revenue 13 2010-04-01 2010-04-01 false Allowance of adjustments (temporary). 1.6411-3T... TAX (CONTINUED) INCOME TAXES Abatements, Credits, and Refunds § 1.6411-3T Allowance of adjustments... after the date of the allowance of the decrease. (iii) An amount (not including an amount the time for...

  16. Diversity of micro-crustaceans in temporary habitats of the province ...

    African Journals Online (AJOL)

    A study on the distribution of micro-crustaceans in seven temporary habitats of the province of Sasalı (Izmir) was conducted between 27 March and 10 April 2011. 15 micro-crustacean species, comprising eight ostracods, four branchiopods and three copepods were identified. All species registered represent new reports for ...

  17. 75 FR 20257 - Amendment of the Temporary Liquidity Guarantee Program To Extend the Transaction Account...

    Science.gov (United States)

    2010-04-19

    ... Transaction Account Guarantee Program With Opportunity To Opt Out AGENCY: Federal Deposit Insurance... Rule to amend the Transaction Account Guarantee (TAG) component of the Temporary Liquidity Guarantee... in the TAG- related accounts. Further, the Interim Rule requires IDIs participating in the TAG...

  18. 77 FR 4587 - GE Asset Management Incorporated, et al.; Notice of Application and Temporary Order

    Science.gov (United States)

    2012-01-30

    ... COMMISSION GE Asset Management Incorporated, et al.; Notice of Application and Temporary Order January 24... also have applied for a permanent order. Applicants: GE Asset Management Incorporated (``GEAM''), GE... Daniele Marchesani, Branch Chief, at (202) 551-6821 (Division of Investment Management, Office of...

  19. A study on setting of the fatigue limit of temporary dental implants.

    Science.gov (United States)

    Kim, M H; Cho, E J; Lee, J W; Kim, E K; Yoo, S H; Park, C W

    2017-07-01

    A temporary dental implant is a medical device which is temporarily used to support a prosthesis such as an artificial tooth used for restoring patient's masticatory function during implant treatment. It is implanted in the oral cavity to substitute for the role of tooth. Due to the aging and westernization of current Korean society, the number of tooth extraction and implantation procedures is increasing, leading to an increase in the use and development of temporary dental implants. Because an implant performs a masticatory function in place of a tooth, a dynamic load is repeatedly put on the implant. Thus, the fatigue of implants is reported to be the most common causes of the fracture thereof. According to the investigation and analysis of the current domestic and international standards, the standard for fatigue of implant fixtures is not separately specified. Although a test method for measuring the fatigue is suggested in an ISO standard, it is a standard for permanent dental implants. Most of the test standards for Korean manufacturers and importers apply 250 N or more based on the guidance for the safety and performance evaluation of dental implants. Therefore, this study is intended to figure out the fatigue standard which can be applied to temporary dental implants when measuring the fatigue according to the test method suggested in the permanent dental implant standard. The results determined that suitable fatigue standards of temporary dental implants should be provided by each manufacturer rather than applying 250 N. This study will be useful for the establishment of the fatigue standards and fatigue test methods of the manufacturers and importers of temporary dental implants.

  20. 20 CFR 1002.41 - Does an employee have rights under USERRA even though he or she holds a temporary, part-time...

    Science.gov (United States)

    2010-04-01

    ... even though he or she holds a temporary, part-time, probationary, or seasonal employment position? 1002... employee have rights under USERRA even though he or she holds a temporary, part-time, probationary, or seasonal employment position? USERRA rights are not diminished because an employee holds a temporary, part...