Science.gov

Sample records for achieve permanent closure

  1. Achieving closure at Fernald

    SciTech Connect

    Bradburne, John; Patton, Tisha C.

    2001-02-25

    When Fluor Fernald took over the management of the Fernald Environmental Management Project in 1992, the estimated closure date of the site was more than 25 years into the future. Fluor Fernald, in conjunction with DOE-Fernald, introduced the Accelerated Cleanup Plan, which was designed to substantially shorten that schedule and save taxpayers more than $3 billion. The management of Fluor Fernald believes there are three fundamental concerns that must be addressed by any contractor hoping to achieve closure of a site within the DOE complex. They are relationship management, resource management and contract management. Relationship management refers to the interaction between the site and local residents, regulators, union leadership, the workforce at large, the media, and any other interested stakeholder groups. Resource management is of course related to the effective administration of the site knowledge base and the skills of the workforce, the attraction and retention of qualified a nd competent technical personnel, and the best recognition and use of appropriate new technologies. Perhaps most importantly, resource management must also include a plan for survival in a flat-funding environment. Lastly, creative and disciplined contract management will be essential to effecting the closure of any DOE site. Fluor Fernald, together with DOE-Fernald, is breaking new ground in the closure arena, and ''business as usual'' has become a thing of the past. How Fluor Fernald has managed its work at the site over the last eight years, and how it will manage the new site closure contract in the future, will be an integral part of achieving successful closure at Fernald.

  2. Achieving permanency for LGBTQ youth.

    PubMed

    Jacobs, Jill; Freundlich, Madelyn

    2006-01-01

    This article brings together two significant efforts in the child welfare field: achieving permanence for youth in out-of-home care and meeting the needs of lesbian, gay, bisexual, transgender and questioning (LGBTQ) youth. During the past several years, a national movement has taken place to assure all children and youth have a permanent family connection before leaving the child welfare system; however, LGBTQ youth are not routinely included in the permanency discussions. At the same time, efforts in addressing the needs of LGBTQ youth have increased, but permanency is rarely mentioned as a need. This article offers models of permanence and practices to facilitate permanence with LGBTQ youth and their families. It also offers a youth-driven, individualized process, using youth development principles to achieve relational, physical, and legal permanence. Reunification efforts are discussed, including services, supports, and education required for youth to return to their family of origin. For those who cannot return home, other family resources are explored. The article also discusses cultural issues as they affect permanence for LGBTQ youth, and, finally, addresses the need for ongoing support services to sustain and support permanency.

  3. 77 FR 55895 - Permanent Closure of Cincinnati Blue Ash Airport

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-09-11

    ... Federal Aviation Administration Permanent Closure of Cincinnati Blue Ash Airport AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of permanent closure of Cincinnati Blue Ash Airport (ISZ). SUMMARY: The... Cincinnati advising that on August 29, 2012, it was permanently closing Cincinnati Blue Ash Airport...

  4. Permanent Closure of the TAN-664 Underground Storage Tank

    SciTech Connect

    Bradley K. Griffith

    2011-12-01

    This closure package documents the site assessment and permanent closure of the TAN-664 gasoline underground storage tank in accordance with the regulatory requirements established in 40 CFR 280.71, 'Technical Standards and Corrective Action Requirements for Owners and Operators of Underground Storage Tanks: Out-of-Service UST Systems and Closure.'

  5. 75 FR 45661 - Notice of Permanent Closure on Public Lands in Ada County, ID

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-08-03

    ... Bureau of Land Management Notice of Permanent Closure on Public Lands in Ada County, ID AGENCY: Bureau of Land Management, Interior. ACTION: Notice of permanent closure. SUMMARY: On April 12, 2010, Higby Cave and all public lands within 1,000 feet of the entrance were permanently closed to vehicle access...

  6. Permanent Closure of MFC Biodiesel Underground Storage Tank 99ANL00013

    SciTech Connect

    Kerry L. Nisson

    2012-10-01

    This closure package documents the site assessment and permanent closure of the Materials and Fuels Complex biodiesel underground storage tank 99ANL00013 in accordance with the regulatory requirements established in 40 CFR 280.71, “Technical Standards and Corrective Action Requirements for Owners and Operators of Underground Storage Tanks: Out-of-Service UST Systems and Closure.”

  7. 40 CFR 280.71 - Permanent closure and changes-in-service.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... UNDERGROUND STORAGE TANKS (UST) Out-of-Service UST Systems and Closure § 280.71 Permanent closure and changes...: (A) American Petroleum Institute Recommended Practice 1604, “Removal and Disposal of Used Underground... Tanks”; (C) American Petroleum Institute Recommended Practice 1631, “Interior Lining of...

  8. 40 CFR 280.71 - Permanent closure and changes-in-service.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... UNDERGROUND STORAGE TANKS (UST) Out-of-Service UST Systems and Closure § 280.71 Permanent closure and changes...: (A) American Petroleum Institute Recommended Practice 1604, “Removal and Disposal of Used Underground... Tanks”; (C) American Petroleum Institute Recommended Practice 1631, “Interior Lining of...

  9. 40 CFR 280.71 - Permanent closure and changes-in-service.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... UNDERGROUND STORAGE TANKS (UST) Out-of-Service UST Systems and Closure § 280.71 Permanent closure and changes...: (A) American Petroleum Institute Recommended Practice 1604, “Removal and Disposal of Used Underground... Tanks”; (C) American Petroleum Institute Recommended Practice 1631, “Interior Lining of...

  10. 10 CFR 63.113 - Performance objectives for the geologic repository after permanent closure.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 10 Energy 2 2010-01-01 2010-01-01 false Performance objectives for the geologic repository after permanent closure. 63.113 Section 63.113 Energy NUCLEAR REGULATORY COMMISSION (CONTINUED) DISPOSAL OF HIGH-LEVEL RADIOACTIVE WASTES IN A GEOLOGIC REPOSITORY AT YUCCA MOUNTAIN, NEVADA Technical...

  11. 10 CFR 63.161 - Emergency plan for the geologic repository operations area through permanent closure.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 10 Energy 2 2010-01-01 2010-01-01 false Emergency plan for the geologic repository operations area through permanent closure. 63.161 Section 63.161 Energy NUCLEAR REGULATORY COMMISSION (CONTINUED) DISPOSAL OF HIGH-LEVEL RADIOACTIVE WASTES IN A GEOLOGIC REPOSITORY AT YUCCA MOUNTAIN, NEVADA...

  12. 10 CFR 63.111 - Performance objectives for the geologic repository operations area through permanent closure.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 10 Energy 2 2010-01-01 2010-01-01 false Performance objectives for the geologic repository operations area through permanent closure. 63.111 Section 63.111 Energy NUCLEAR REGULATORY COMMISSION (CONTINUED) DISPOSAL OF HIGH-LEVEL RADIOACTIVE WASTES IN A GEOLOGIC REPOSITORY AT YUCCA MOUNTAIN,...

  13. 10 CFR 63.113 - Performance objectives for the geologic repository after permanent closure.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 10 Energy 2 2013-01-01 2013-01-01 false Performance objectives for the geologic repository after permanent closure. 63.113 Section 63.113 Energy NUCLEAR REGULATORY COMMISSION (CONTINUED) DISPOSAL OF HIGH-LEVEL RADIOACTIVE WASTES IN A GEOLOGIC REPOSITORY AT YUCCA MOUNTAIN, NEVADA Technical...

  14. 10 CFR 63.113 - Performance objectives for the geologic repository after permanent closure.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 10 Energy 2 2012-01-01 2012-01-01 false Performance objectives for the geologic repository after permanent closure. 63.113 Section 63.113 Energy NUCLEAR REGULATORY COMMISSION (CONTINUED) DISPOSAL OF HIGH-LEVEL RADIOACTIVE WASTES IN A GEOLOGIC REPOSITORY AT YUCCA MOUNTAIN, NEVADA Technical...

  15. 10 CFR 63.161 - Emergency plan for the geologic repository operations area through permanent closure.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 10 Energy 2 2012-01-01 2012-01-01 false Emergency plan for the geologic repository operations area through permanent closure. 63.161 Section 63.161 Energy NUCLEAR REGULATORY COMMISSION (CONTINUED) DISPOSAL OF HIGH-LEVEL RADIOACTIVE WASTES IN A GEOLOGIC REPOSITORY AT YUCCA MOUNTAIN, NEVADA...

  16. 10 CFR 63.111 - Performance objectives for the geologic repository operations area through permanent closure.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 10 Energy 2 2014-01-01 2014-01-01 false Performance objectives for the geologic repository operations area through permanent closure. 63.111 Section 63.111 Energy NUCLEAR REGULATORY COMMISSION (CONTINUED) DISPOSAL OF HIGH-LEVEL RADIOACTIVE WASTES IN A GEOLOGIC REPOSITORY AT YUCCA MOUNTAIN,...

  17. 10 CFR 63.161 - Emergency plan for the geologic repository operations area through permanent closure.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 10 Energy 2 2014-01-01 2014-01-01 false Emergency plan for the geologic repository operations area through permanent closure. 63.161 Section 63.161 Energy NUCLEAR REGULATORY COMMISSION (CONTINUED) DISPOSAL OF HIGH-LEVEL RADIOACTIVE WASTES IN A GEOLOGIC REPOSITORY AT YUCCA MOUNTAIN, NEVADA...

  18. 10 CFR 63.161 - Emergency plan for the geologic repository operations area through permanent closure.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 10 Energy 2 2011-01-01 2011-01-01 false Emergency plan for the geologic repository operations area through permanent closure. 63.161 Section 63.161 Energy NUCLEAR REGULATORY COMMISSION (CONTINUED) DISPOSAL OF HIGH-LEVEL RADIOACTIVE WASTES IN A GEOLOGIC REPOSITORY AT YUCCA MOUNTAIN, NEVADA...

  19. 10 CFR 63.113 - Performance objectives for the geologic repository after permanent closure.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 10 Energy 2 2011-01-01 2011-01-01 false Performance objectives for the geologic repository after permanent closure. 63.113 Section 63.113 Energy NUCLEAR REGULATORY COMMISSION (CONTINUED) DISPOSAL OF HIGH-LEVEL RADIOACTIVE WASTES IN A GEOLOGIC REPOSITORY AT YUCCA MOUNTAIN, NEVADA Technical...

  20. 10 CFR 63.113 - Performance objectives for the geologic repository after permanent closure.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 10 Energy 2 2014-01-01 2014-01-01 false Performance objectives for the geologic repository after permanent closure. 63.113 Section 63.113 Energy NUCLEAR REGULATORY COMMISSION (CONTINUED) DISPOSAL OF HIGH-LEVEL RADIOACTIVE WASTES IN A GEOLOGIC REPOSITORY AT YUCCA MOUNTAIN, NEVADA Technical...

  1. 10 CFR 63.161 - Emergency plan for the geologic repository operations area through permanent closure.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 10 Energy 2 2013-01-01 2013-01-01 false Emergency plan for the geologic repository operations area through permanent closure. 63.161 Section 63.161 Energy NUCLEAR REGULATORY COMMISSION (CONTINUED) DISPOSAL OF HIGH-LEVEL RADIOACTIVE WASTES IN A GEOLOGIC REPOSITORY AT YUCCA MOUNTAIN, NEVADA...

  2. 10 CFR 63.111 - Performance objectives for the geologic repository operations area through permanent closure.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 10 Energy 2 2013-01-01 2013-01-01 false Performance objectives for the geologic repository operations area through permanent closure. 63.111 Section 63.111 Energy NUCLEAR REGULATORY COMMISSION (CONTINUED) DISPOSAL OF HIGH-LEVEL RADIOACTIVE WASTES IN A GEOLOGIC REPOSITORY AT YUCCA MOUNTAIN,...

  3. Achieving and documenting closure in plant growth facilities

    NASA Technical Reports Server (NTRS)

    Knott, W. M.; Sager, John C.; Wheeler, Ray

    1992-01-01

    As NASA proceeds with its effort to develop a Controlled Ecological Life Support System (CELSS) that will provide life support to crews during long duration space missions, it must address the question of facility and system closure. The concept of closure as it pertains to CELSS and engineering specifications, construction problems and monitoring procedures used in the development and operation of a closed plant growth facility for the CELSS program are described. A plant growth facility is one of several modules required for a CELSS. A prototype of this module at Kennedy Space Center is the large (7m tall x 3.5m diameter) Biomass Production Chamber (BPC), the central facility of the CELSS Breadboard Project. The BPC is atmospherically sealed to a leak rate of approximately 5 percent of its total volume per 24 hours. This paper will discuss the requirements for atmospheric closure in the facility, present CO2 and trace gas data from initial tests of the BPC with and without plants, and describe how the chamber was sealed atmospherically. Implications that research conducted in this type of facility will have for the CELSS program are discussed.

  4. Achieving Direct Closure of the Anterolateral Thigh Flap Donor Site—An Algorithmic Approach

    PubMed Central

    Pachón Suárez, Jaime Eduardo; Sadigh, Parviz Lionel; Shih, Hsiang-Shun; Hsieh, Ching-Hua

    2014-01-01

    Background: Minimizing donor-site morbidity after free flap harvest is of paramount importance. In this article, we share our experience with achieving primary closure of 58 anterolateral thigh (ALT) free flap donor sites using a simple algorithm in cases where primary closure would otherwise have not been possible. Methods: Between 2004 and 2010, 58 patients who underwent free ALT flap reconstruction were included in the study. The inclusion criteria were those who had flap width requirements that were wider than 16% of the thigh circumference and had achieved direct primary closure of the donor site by the use of our technique. Results: Primary closure of the donor sites was facilitated in all cases by the use of 3 distinct techniques. This included the use of the V-Y advancement technique in 13 patients, split skin paddle technique in 7 patients, and the tubed skin paddle design in 38 patients. No episodes of postoperative wound dehiscence at the donor site were encountered; however, 2 cases were complicated by superficial wound infections that settled with a course of antibiotics. Conclusions: Direct primary closure of the ALT donor site can be facilitated by the use of our simple algorithm. Certain strategies need to be adopted at the design stage; however, the techniques used are simple and reliable, produce superior cosmetic results at the donor site, save time, and spare the patient the morbidity associated with the harvest of a skin graft. PMID:25426349

  5. 76 FR 54788 - Notice of Permanent Closure of Public Lands in Clackamas and Multnomah Counties, OR

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-09-02

    ... on public lands administered by the Bureau of Land Management (BLM) Salem District that are within... Enstrom, BLM Salem District, Cascades Resource Area Field Manager, 1717 Fabry Road, SE., Salem, Oregon... affected area and other documents associated with this closure are available at the Salem District...

  6. Physiological Root End Closure in a Traumatized Young Permanent Tooth Using Collagen Particles as Pulpal Dressing

    PubMed Central

    Gaur, Divya; Kumar, CH Santosh; Shilpa, G

    2017-01-01

    The management of traumatized young permanent teeth has always been a challenge to the clinician, considering the importance of retaining the vitality of the tooth. Recently, collagen particles have been successfully used as pulpotomy medicaments in primary teeth. This case report shows the use of collagen particles as pulpal dressing in a traumatized young permanent tooth of a nine-year-old child presenting with complicated fracture of young permanent left maxillary central incisor. Partial pulpotomy was performed with collagen particles (Biofil-AB) as pulpal dressing. At six months follow up, apexogenesis was found to be nearly complete. Thus, collagen can be considered as a potential pulpal medicament for apexogenesis procedures. PMID:28274076

  7. 40 CFR 280.71 - Permanent closure and changes-in-service.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... sludges. All tanks taken out of service permanently must also be either removed from the ground or filled... tank by removing all liquid and accumulated sludge and conduct a site assessment in accordance with...: (A) American Petroleum Institute Recommended Practice 1604, “Removal and Disposal of Used...

  8. 40 CFR 280.71 - Permanent closure and changes-in-service.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... sludges. All tanks taken out of service permanently must also be either removed from the ground or filled... tank by removing all liquid and accumulated sludge and conduct a site assessment in accordance with...: (A) American Petroleum Institute Recommended Practice 1604, “Removal and Disposal of Used...

  9. Achieving Closure for Bioregenerative Life Support Systems: Engineering and Ecological Challenges, Research Opportunities

    NASA Astrophysics Data System (ADS)

    Dempster, William; Allen, John P.

    Closed systems are desirable for a number of purposes: space life support systems where precious life-supporting resources need to be kept inside; biospheric systems; where global ecological pro-cesses can be studied in great detail and testbeds where research topics requiring isolation from the outside (e.g. genetically modified organisms; radioisotopes) can be studied in isolation from the outside environment and where their ecological interactions and fluxes can be studied. But to achieve and maintain closure raises both engineering and ecological challenges. Engineering challenges include methods of achieving closure for structures of different materials, and devel-oping methods of allowing energy (for heating and cooling) and information transfer through the materially closed structure. Methods of calculating degree of closure include measuring degradation rates of inert trace gases introduced into the system. An allied problem is devel-oping means of locating where leaks are located so that they may be repaired and degree of closure maintained. Once closure is achieved, methods of dealing with the pressure differen-tials between inside and outside are needed: from inflatable structures which might adjust to the pressure difference to variable volume chambers attached to the life systems component. These issues are illustrated through the engineering employed at Biosphere 2, the Biosphere 2 Test Module and the Laboratory Biosphere and a discussion of methods used by other closed ecological system facility engineers. Ecological challenges include being able to handle faster cycling rates and accentuated daily and seasonal fluxes of critical life elements such as carbon dioxide, oxygen, water, macro-and mico-nutrients. The problems of achieving sustainability in closed systems for life support include how to handle atmospheric dynamics including trace gases, producing a complete human diet and recycling nutrients and maintaining soil fertility, healthy air and

  10. The use of mineral trioxide aggregate to achieve root end closure: three case reports.

    PubMed

    Albadri, Sondos; Chau, Yang See; Jarad, Fadi

    2013-12-01

    The use of mineral trioxide aggregate (MTA) to achieve root end closure has many advantages over the traditional calcium hydroxide (Ca(OH)2) technique including the reduced number of visits and the reduced mechanical damage to dentine. Limited studies have reported the outcome of using MTA as an apexification material and a one-stage obturation technique in non-vital immature teeth. This article illustrates three successful clinical cases where MTA was used as an apexification material. In case study one: Type 1 Dens Invaginatus tooth with incomplete root formation, case study two: an immature tooth that suffered pulp necrosis following an enamel and dentine fracture trauma and case study three: a non-vital tooth following an apical root fracture.

  11. Achieving effective hearing aid fitting within one month after identification of childhood permanent hearing impairment.

    PubMed

    Bastanza, G; Gallus, R; De Carlini, M; Picciotti, P M; Muzzi, E; Ciciriello, E; Orzan, E; Conti, G

    2016-02-01

    Diagnosis of child permanent hearing impairment (PHI) can be made with extreme timeliness compared to the past thanks to improvements in PHI identification through newborn hearing screening programmes. It now becomes essential to provide an effective amplification as quickly as possible in order to restore auditory function and favour speech and language development. The early fitting of hearing aids and possible later cochlear implantation indeed prompts the development of central auditory pathways, connections with secondary sensory brain areas, as well as with motor and articulatory cortex. The aim of this paper is to report the results of a strategic analysis that involves identification of strengths, weaknesses, opportunities and threats regarding the process of achieving early amplification in all cases of significant childhood PHI. The analysis is focused on the Italian situation and is part of the Italian Ministry of Health project CCM 2013 "Preventing Communication Disorders: a Regional Program for Early Identification, Intervention and Care of Hearing Impaired Children".

  12. Recombinant Amelogenin Protein Induces Apical Closure and Pulp Regeneration in Open-apex, Non-vital Permanent Canine Teeth

    PubMed Central

    Mounir, Maha M.F.; Matar, Moustafa A.; Lei, Yaping; Snead, Malcolm L.

    2015-01-01

    Introduction Recombinant DNA produced amelogenin protein was compared to calcium hydroxide in a study of immature apex closure conducted in 24 young mongrel dogs. Methods Root canals of maxillary and mandibular right premolars (n = 240) were instrumented and left open for 14 days. Canals were cleansed, irrigated and split equally for treatment with recombinant mouse amelogenin (n = 120) or calcium hydroxide (n = 120). Results After 1, 3, and 6 months, the animals were sacrificed and the treated teeth recovered for histological assessment and immunodetection of protein markers associated with odontogenic cells. After 1 month, amelogenin-treated canals revealed calcified tissue formed at the apical foramen and a pulp chamber containing soft connective tissue and hard tissue; amelogenin-treated canals assessed after 3 and 6 month intervals further included apical tissue functionally attached to bone by a periodontal ligament. In contrast, calcified apical tissue was poorly formed in the calcium hydroxide group and soft connective tissue within the pulp chamber was not observed. Conclusions The findings from this experimental strategy suggest recombinant amelogenin protein can signal cells to enhance apex formation in non-vital immature teeth and promote soft connective tissue regeneration. PMID:26709200

  13. Field Quality And Magnetic Center Stability Achieved in a Variable Permanent Magnet Quadrupole for the ILC

    SciTech Connect

    Iwashita, Y.; Mihara, T.; Kumada, M.; Spencer, C.; /SLAC

    2006-02-06

    A superstrong permanent magnet quadrupole (PMQ) is one of the candidates for the final focus lens for the International Linear Collider (ILC). Our prototype PMQ can produce variable strengths from 3.5T to 24.2T in 1.4T steps. The magnetic center of the PMQ must not move more than a few microns during a 20% strength change to enable a Beam-Based Alignment (BBA) process to work. Our PMQ can be mechanically adjusted to suppress the center movement from more than 30{micro}m to less than 10{micro}m during strength changes.

  14. Apical Closure in Apexification: A Review and Case Report of Apexification Treatment of an Immature Permanent Tooth with Biodentine.

    PubMed

    Vidal, Karla; Martin, Gabriela; Lozano, Oscar; Salas, Marco; Trigueros, Jaime; Aguilar, Gabriel

    2016-05-01

    Materials such as calcium hydroxide paste and mineral trioxide aggregate are used in apexification treatment of immature permanent teeth, but the search for improved materials with higher characteristics of biocompatibility results in different materials. Biodentine is a tricalcium silicate cement that possesses adequate handling characteristics and acceptable mechanical and bioactivity properties. This report describes the case of a 9-year-old boy who was referred to the Department of Dental Clinic of Querétaro Autonomous University of Mexico. One month prior the patient had suffered a dental trauma of his upper left central incisor and had been treated by another dentist. The clinical diagnosis was previously initiated therapy and symptomatic apical periodontitis. The treatment was apexification with Biodentine. At follow-ups performed at 3, 6, and 18 months after treatment the tooth was asymptomatic. The cone-beam computed tomography scan at 18-month postoperative follow-up revealed continuity of periodontal ligament space, absence of periapical rarefactions, and a thin layer of calcified tissue formed apical to the Biodentine barrier. On the basis of sealing ability and biocompatibility, apexification treatment with Biodentine was applied in the present case report. The favorable clinical and radiographic outcome in this case demonstrated that Biodentine may be an efficient alternative to the conventional apexification materials.

  15. Paroxysmal atrial fibrillation ablation: Achieving permanent pulmonary vein isolation by point-by-point radiofrequency lesions

    PubMed Central

    Pedrote, Alonso; Acosta, Juan; Jáuregui-Garrido, Beatriz; Frutos-López, Manuel; Arana-Rueda, Eduardo

    2017-01-01

    Pulmonary vein isolation by point-by-point radiofrequency catheter ablation constitutes the cornerstone of catheter ablation strategies for the treatment of atrial fibrillation. However, despite advances in pulmonary vein isolation ablation strategies, long-term success rates after ablation remain suboptimal, which highlights the need to develop techniques to achieve more durable lesions. Strategies proposed to improve the durability of pulmonary vein isolation can be divided into two groups: Those addressed to improving the quality of the lesion and those that optimize the detection of acute PV reconnection during the ablation procedure. This manuscript reviews the role and potential benefits of these techniques according to current clinical evidence.

  16. How to Achieve Complete and Permanent Pulmonary Vein Isolation without Complications

    PubMed Central

    Han, Seongwook

    2014-01-01

    The efficacy and safety of catheter ablation for the management of atrial fibrillation (AF) has been improved in recent years. Radiofrequency (RF) catheter ablation for maintaining sinus rhythm is superior to the current antiarrhythmic drug therapy in selected patients. Pulmonary vein isolation (PVI) is the cornerstone of various catheter ablation strategies. It is well recognized that pulmonary vein (PV) antrum contributes to the AF initiation and/or perpetuation. Since PV stenosis is a complication of ablation within a PV, the ablation site for PVI has shifted to the junction between the left atrium and the PV rather than the ostium of the PV. However, PV reconnection after ablation is the major cause of recurrence of AF. The recovery of PV conduction could be caused by anatomical variations such as the failure to produce complete transmural lesion or gaps at the ablation line due to the transient electrophysiologic effects from the RF ablation. In this review, we discussed several factors to be considered for the achievement of the best PVI, including clinical aspects and technical aspects. PMID:25278981

  17. Closure report for N Reactor

    SciTech Connect

    Not Available

    1994-01-01

    This report has been prepared to satisfy Section 3156(b) of Public Law 101-189 (Reports in Connection with Permanent Closures of Department of Energy Defense Nuclear Facilities), which requires submittal of a Closure Report to Congress by the Secretary of Energy upon the permanent cessation of production operations at a US Department of Energy (DOE) defense nuclear facility (Watkins 1991). This closure report provides: (1) A complete survey of the environmental problems at the facility; (2) Budget quality data indicating the cost of environmental restoration and other remediation and cleanup efforts at the facility; (3) A proposed cleanup schedule.

  18. Techniques for Abdominal Wall Closure after Damage Control Laparotomy: From Temporary Abdominal Closure to Early/Delayed Fascial Closure—A Review

    PubMed Central

    Huang, Qian; Li, Jieshou; Lau, Wan-yee

    2016-01-01

    Open abdomen (OA) has been an effective treatment for abdominal catastrophes in traumatic and general surgery. However, management of patients with OA remains a formidable task for surgeons. The central goal of OA is closure of fascial defect as early as is clinically feasible without precipitating abdominal compartment syndrome. Historically, techniques such as packing, mesh, and vacuum-assisted closure have been developed to assist temporary abdominal closure, and techniques such as components separation, mesh-mediated traction, bridging fascial defect with permanent synthetic mesh, or biologic mesh have also been attempted to achieve early primary fascial closure, either alone or in combined use. The objective of this review is to present the challenges of these techniques for OA with a goal of early primary fascial closure, when the patient's physiological condition allows. PMID:26819597

  19. Combined electromagnetic and permanent magnet undulator to achieve higher field and easier field variation without mechanical movement

    SciTech Connect

    Bogachenkov, V.A.; Papadichev, V.A.

    1995-12-31

    Hybrid or pure permanent magnet undulators (PMU) are widely used because they have high field quality, allow easy field correction and do not consume power. Their main drawback is the necessity of moving one half of the magnet relative to the other to change field value, which requires a high precision, remotely controlled (and thus costly) driving system On the other hand, electromagnetic undulatory (EMU) have no problem with field variation, but consume too much power (100 - 400 kW) for high fields. Adding permanent magnets to EMU results in a considerable decrease of power consumption, while retaining the advantage of easily changing field level. A model of a CW combined EM+PM plane undulator having a 4.8 cm period and 8 periods long is described. It is simple in design and cheap in manufacturing: magnet yokes are made of soft steel rings in which 1.6 cm air gaps were cut to form pole faces. Odd yokes are placed to one side of the undulator axis and even yokes to the other with the air gaps on the axis. Each set of yokes is excited by its own separate winding of simple racetrack shape. Undulator deflection parameter K = 1.1 (B = 2.4 kG) can be reached at a 0.78kW power level, i.e., less than 100 W per period, while without PM only a maximum K = 0.8 can be obtained and requires 4 kW power. No water cooling is needed, which greatly simplifies undulator design. The undulator was not optimized relative to the axial-air-gap to ring-width ratio: one might expect some increase in field level for thinner rings. Field amplitude depends also on relative transverse position of odd and even pole faces.

  20. 32 CFR 989.25 - Base closure and realignment.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 32 National Defense 6 2010-07-01 2010-07-01 false Base closure and realignment. 989.25 Section 989... PROTECTION ENVIRONMENTAL IMPACT ANALYSIS PROCESS (EIAP) § 989.25 Base closure and realignment. Base closure or realignment may entail special requirements for environmental analysis. The permanent base...

  1. 32 CFR 989.25 - Base closure and realignment.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 32 National Defense 6 2013-07-01 2013-07-01 false Base closure and realignment. 989.25 Section 989... PROTECTION ENVIRONMENTAL IMPACT ANALYSIS PROCESS (EIAP) § 989.25 Base closure and realignment. Base closure or realignment may entail special requirements for environmental analysis. The permanent base...

  2. 32 CFR 989.25 - Base closure and realignment.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 32 National Defense 6 2012-07-01 2012-07-01 false Base closure and realignment. 989.25 Section 989... PROTECTION ENVIRONMENTAL IMPACT ANALYSIS PROCESS (EIAP) § 989.25 Base closure and realignment. Base closure or realignment may entail special requirements for environmental analysis. The permanent base...

  3. 32 CFR 989.25 - Base closure and realignment.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 32 National Defense 6 2014-07-01 2014-07-01 false Base closure and realignment. 989.25 Section 989... PROTECTION ENVIRONMENTAL IMPACT ANALYSIS PROCESS (EIAP) § 989.25 Base closure and realignment. Base closure or realignment may entail special requirements for environmental analysis. The permanent base...

  4. 32 CFR 989.25 - Base closure and realignment.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 32 National Defense 6 2011-07-01 2011-07-01 false Base closure and realignment. 989.25 Section 989... PROTECTION ENVIRONMENTAL IMPACT ANALYSIS PROCESS (EIAP) § 989.25 Base closure and realignment. Base closure or realignment may entail special requirements for environmental analysis. The permanent base...

  5. There's No Place Like Home: Achieving Safety, Permanency, and Well-Being for Lesbian and Gay Adolescents in Out-of-Home Care Settings.

    ERIC Educational Resources Information Center

    Mallon, Gerald P.; Aledort, Nina; Ferrera, Michael

    2002-01-01

    Examined what challenges are presented in ensuring permanency, safety, and well-being for gay and lesbian youth in a gay-affirming child welfare environment. Found that the need remains to develop practice principles and guidelines specific to working toward permanency for these youth and to be more sensitive to their unique needs. (Author/SD)

  6. Permanent Contraception for Women.

    PubMed

    Patil, Eva; Jensen, Jeffrey T

    2016-05-01

    Permanent contraception is a highly desired and commonly used contraceptive option for women around the world who desire never to become pregnant. Current methods of female permanent contraception require surgery. Postpartum tubal ligation and interval surgical tubal ligation are safe and effective, do not interfere with menstrual cycles, and require no ongoing cost or medical checkups. Hysteroscopic tubal occlusion offers a less invasive surgical approach, but requires an imaging study for verification of correct placement. However, not all women have access to a surgeon trained to provide permanent contraception, or they may face other prohibitive logistic or financial burdens. The development of novel permanent contraception methods that are immediately effective and/or nonsurgical could help improve access to and acceptability of permanent contraception. The expansion of permanent contraception options could help women achieve their family planning goals and reduce unintended pregnancies.

  7. Duct closure

    DOEpatents

    Vowell, Kennison L.

    1987-01-01

    A closure for an inclined duct having an open upper end and defining downwardly extending passageway. The closure includes a cap for sealing engagement with the open upper end of the duct. Associated with the cap are an array of vertically aligned plug members, each of which has a cross-sectional area substantially conforming to the cross-sectional area of the passageway at least adjacent the upper end of the passageway. The plug members are interconnected in a manner to provide for free movement only in the plane in which the duct is inclined. The uppermost plug member is attached to the cap means and the cap means is in turn connected to a hoist means which is located directly over the open end of the duct.

  8. Closure device

    SciTech Connect

    Sable, D. E.

    1985-06-11

    A closure device connectible to a well head through which the polished rod of a rod string extends into a well tubing for operating pump means for moving well fluids to a surface flow conductor, the closure device having a tubular ram provided with a packing or plug for closing an annular passage between the polished rod and a tubular body connected to the well head above a lateral port of the tubular body, the tubular ram and the tubular body having thread means for moving the plug between an operative lower position wherein it closes the annular passage when the rod string is stationary and on inoperative upper position; seal means between the ram and the polished rod spaced above the plug; and a plurality of independent seal means between the ram and the tubular body operative when the plug is in its inoperative position. The plug of the closure device is especially adapted to operate under high temperature and pressure conditions of the well, as during steam injection operations when the rod string is stationary, to protect the seal means from high pressures and temperatures as well as any fluids which may be corrosive or otherwise deleterious to the substance of which the seal means are made.

  9. CLOSURE DEVICE

    DOEpatents

    Linzell, S.M.; Dorcy, D.J.

    1958-08-26

    A quick opening type of stuffing box employing two banks of rotatable shoes, each of which has a caraming action that forces a neoprene sealing surface against a pipe or rod where it passes through a wall is presented. A ring having a handle or wrench attached is placed eccentric to and between the two banks of shoes. Head bolts from the shoes fit into slots in this ring, which are so arranged that when the ring is rotated a quarter turn in one direction the shoes are thrust inwardly to cramp the neopnrene about the pipe, malting a tight seal. Moving the ring in the reverse direction moves the shoes outwardly and frees the pipe which then may be readily removed from the stuffing box. This device has particular application as a closure for the end of a coolant tube of a neutronic reactor.

  10. Teaching Object Permanence: An Action Research Study

    ERIC Educational Resources Information Center

    Bruce, Susan M.; Vargas, Claudia

    2013-01-01

    "Object permanence," also known as "object concept" in the field of visual impairment, is one of the most important early developmental milestones. The achievement of object permanence is associated with the onset of representational thought and language. Object permanence is important to orientation, including the recognition of landmarks.…

  11. Variable Permanent Magnet Quadrupole

    SciTech Connect

    Mihara, T.; Iwashita, Y.; Kumada, M.; Spencer, C.M.; /SLAC

    2007-05-23

    A permanent magnet quadrupole (PMQ) is one of the candidates for the final focus lens in a linear collider. An over 120 T/m strong variable permanent magnet quadrupole is achieved by the introduction of saturated iron and a 'double ring structure'. A fabricated PMQ achieved 24 T integrated gradient with 20 mm bore diameter, 100 mm magnet diameter and 20 cm pole length. The strength of the PMQ is adjustable in 1.4 T steps, due to its 'double ring structure': the PMQ is split into two nested rings; the outer ring is sliced along the beam line into four parts and is rotated to change the strength. This paper describes the variable PMQ from fabrication to recent adjustments.

  12. Repository Closure and Sealing Approach

    SciTech Connect

    A.T. Watkins

    2000-06-28

    The scope of this analysis will be to develop the conceptual design of the closure seals and their locations in the Subsurface Facilities. The design will be based on the recently established program requirements for transitioning to the Site Recommendation (SR) design as outlined by ''Approach to Implementing the Site Recommendation Baseline'' (Stroupe 2000) and the ''Monitored Geologic Repository Project Description Document'' (CRWMS M&O 1999b). The objective of this analysis will be to assist in providing a description for the Subsurface Facilities System Description Document, Section 2 and finally to document any conclusions reached in order to contribute and provide support to the SR. This analysis is at a conceptual level and is considered adequate to support the SR design. The final closure barriers and seals for the ventilation shafts, and the north and south ramps will require these openings to be permanently sealed to limit excessive air and water inflows and prevent human intrusion. The major tasks identified with closure in this analysis are: (1) Developing the overall subsurface seal layout and identifying design and operational interfaces for the Subsurface Facilities. (2) Summarizing the general site conditions and general rock characteristic with respect to seal location and describing the seal selected. (3) Identify seal construction materials, methodology of construction and strategic locations including design of the seal and plugs. (4) Discussing methods to prevent human intrusion.

  13. Essure Permanent Birth Control

    MedlinePlus

    ... and Prosthetics Essure Permanent Birth Control Essure Permanent Birth Control Share Tweet Linkedin Pin it More sharing options ... Essure System Essure is a a permanently implanted birth control device for women (female sterilization). Implantation of Essure ...

  14. Closure of the open abdomen.

    PubMed

    Björck, Martin; D'Amours, Scott K; Hamilton, A E Ricardo

    2011-07-01

    The open abdomen is a valuable tool in the management of patients with intra-abdominal hypertension and abdominal compartment syndrome. The longer an abdomen is left open, the greater the potential morbidity, however. From the very start, specific measures should be considered to increase the likelihood of definitive closure and prevent the development of visceral adhesions, lateralization, and/or loss of skin and fascia, ileus, fistulae, and malnutrition. Early definitive closure of all abdominal wall layers is the short-term goal of management once the need for the open abdomen has resolved. Several devices and strategies improve the chances for definitive closure. If a frozen abdomen develops, split-thickness skin grafting of a granulating open abdominal wound base is an alternative. Early coverage of the exposed viscera and acceptance of a large abdominal hernia permit earlier reversal of the catabolic state and lower the risk of fistula formation. When a stoma is required, sealing and separation can become problematic. If a fistula develops, a more complex situation prevails, requiring specific techniques to isolate its output and a longer-term strategy to restore intestinal continuity. Planning the closure of an open abdomen is a process that starts on the first day that the abdomen is opened. Multiple factors need to be addressed, optimized, and controlled to achieve the best outcome.

  15. Space Station evolution study oxygen loop closure

    NASA Technical Reports Server (NTRS)

    Wood, M. G.; Delong, D.

    1993-01-01

    In the current Space Station Freedom (SSF) Permanently Manned Configuration (PMC), physical scars for closing the oxygen loop by the addition of oxygen generation and carbon dioxide reduction hardware are not included. During station restructuring, the capability for oxygen loop closure was deferred to the B-modules. As such, the ability to close the oxygen loop in the U.S. Laboratory module (LAB A) and the Habitation A module (HAB A) is contingent on the presence of the B modules. To base oxygen loop closure of SSF on the funding of the B-modules may not be desirable. Therefore, this study was requested to evaluate the necessary hooks and scars in the A-modules to facilitate closure of the oxygen loop at or subsequent to PMC. The study defines the scars for oxygen loop closure with impacts to cost, weight and volume and assesses the effects of byproduct venting. In addition, the recommended scenarios for closure with regard to topology and packaging are presented.

  16. 30 CFR 75.1204 - Mine closure; filing of map with Secretary.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 30 Mineral Resources 1 2010-07-01 2010-07-01 false Mine closure; filing of map with Secretary. 75... MINE SAFETY AND HEALTH MANDATORY SAFETY STANDARDS-UNDERGROUND COAL MINES Maps § 75.1204 Mine closure; filing of map with Secretary. Whenever an operator permanently closes or abandons a coal mine,...

  17. 30 CFR 75.1204 - Mine closure; filing of map with Secretary.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 30 Mineral Resources 1 2012-07-01 2012-07-01 false Mine closure; filing of map with Secretary. 75... MINE SAFETY AND HEALTH MANDATORY SAFETY STANDARDS-UNDERGROUND COAL MINES Maps § 75.1204 Mine closure; filing of map with Secretary. Whenever an operator permanently closes or abandons a coal mine,...

  18. 30 CFR 75.1204 - Mine closure; filing of map with Secretary.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 30 Mineral Resources 1 2013-07-01 2013-07-01 false Mine closure; filing of map with Secretary. 75... MINE SAFETY AND HEALTH MANDATORY SAFETY STANDARDS-UNDERGROUND COAL MINES Maps § 75.1204 Mine closure; filing of map with Secretary. Whenever an operator permanently closes or abandons a coal mine,...

  19. 30 CFR 75.1204 - Mine closure; filing of map with Secretary.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 30 Mineral Resources 1 2014-07-01 2014-07-01 false Mine closure; filing of map with Secretary. 75... MINE SAFETY AND HEALTH MANDATORY SAFETY STANDARDS-UNDERGROUND COAL MINES Maps § 75.1204 Mine closure; filing of map with Secretary. Whenever an operator permanently closes or abandons a coal mine,...

  20. 30 CFR 75.1204 - Mine closure; filing of map with Secretary.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 30 Mineral Resources 1 2011-07-01 2011-07-01 false Mine closure; filing of map with Secretary. 75... MINE SAFETY AND HEALTH MANDATORY SAFETY STANDARDS-UNDERGROUND COAL MINES Maps § 75.1204 Mine closure; filing of map with Secretary. Whenever an operator permanently closes or abandons a coal mine,...

  1. 10 CFR 60.51 - License amendment for permanent closure.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... world, that would be likely to be consulted by potential human intruders—such records to identify the... tests, experiments, and any other analyses relating to backfill of excavated areas, shaft sealing, waste interaction with the host rock, and any other tests, experiments, or analyses pertinent to the...

  2. 10 CFR 63.51 - License amendment for permanent closure.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ..., and archives elsewhere in the world, that would be likely to be consulted by potential human intruders..., pertinent to compliance with § 63.113. (5) The results of tests, experiments, and any other analyses..., interactions between natural and engineered systems, and any other tests, experiments, or analyses pertinent...

  3. 10 CFR 60.51 - License amendment for permanent closure.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... world, that would be likely to be consulted by potential human intruders—such records to identify the... tests, experiments, and any other analyses relating to backfill of excavated areas, shaft sealing, waste interaction with the host rock, and any other tests, experiments, or analyses pertinent to the...

  4. 10 CFR 60.51 - License amendment for permanent closure.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... world, that would be likely to be consulted by potential human intruders—such records to identify the... tests, experiments, and any other analyses relating to backfill of excavated areas, shaft sealing, waste interaction with the host rock, and any other tests, experiments, or analyses pertinent to the...

  5. 10 CFR 63.51 - License amendment for permanent closure.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ..., and archives elsewhere in the world, that would be likely to be consulted by potential human intruders..., pertinent to compliance with § 63.113. (5) The results of tests, experiments, and any other analyses..., interactions between natural and engineered systems, and any other tests, experiments, or analyses pertinent...

  6. 10 CFR 60.51 - License amendment for permanent closure.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... world, that would be likely to be consulted by potential human intruders—such records to identify the... tests, experiments, and any other analyses relating to backfill of excavated areas, shaft sealing, waste interaction with the host rock, and any other tests, experiments, or analyses pertinent to the...

  7. 10 CFR 63.51 - License amendment for permanent closure.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ..., and archives elsewhere in the world, that would be likely to be consulted by potential human intruders..., pertinent to compliance with § 63.113. (5) The results of tests, experiments, and any other analyses..., interactions between natural and engineered systems, and any other tests, experiments, or analyses pertinent...

  8. 10 CFR 63.51 - License amendment for permanent closure.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ..., and archives elsewhere in the world, that would be likely to be consulted by potential human intruders..., pertinent to compliance with § 63.113. (5) The results of tests, experiments, and any other analyses..., interactions between natural and engineered systems, and any other tests, experiments, or analyses pertinent...

  9. 10 CFR 63.51 - License amendment for permanent closure.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ..., and archives elsewhere in the world, that would be likely to be consulted by potential human intruders..., pertinent to compliance with § 63.113. (5) The results of tests, experiments, and any other analyses..., interactions between natural and engineered systems, and any other tests, experiments, or analyses pertinent...

  10. 10 CFR 60.51 - License amendment for permanent closure.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... world, that would be likely to be consulted by potential human intruders—such records to identify the... tests, experiments, and any other analyses relating to backfill of excavated areas, shaft sealing, waste interaction with the host rock, and any other tests, experiments, or analyses pertinent to the...

  11. Spontaneous closure of stoma.

    PubMed

    Pandit, Narendra; Singh, Harjeet; Kumar, Hemanth; Gupta, Rajesh; Verma, G R

    2016-11-01

    Intestinal loop stoma is a common surgical procedure performed for various benign and malignant abdominal problems, but it rarely undergoes spontaneous closure, without surgical intervention. Two male patients presented to our emergency surgical department with acute abdominal pain. One of them was diagnosed as having rectosigmoid perforation and underwent diversion sigmoid loop colostomy after primary closure of the perforation. The other was a known case of carcinoma of the rectum who had already undergone low anterior resection with covering loop ileostomy; the patient underwent second loop ileostomy, this time for complicated intestinal obstruction. To our surprise, both the loop colostomy and ileostomy closed spontaneously at 8 weeks and 6 weeks, respectively, without any consequences. Spontaneous stoma closure is a rare and interesting event. The exact etiology for spontaneous closure remains unknown, but it may be hypothesized to result from slow retraction of the stoma, added to the concept of a tendency towards spontaneous closure of enterocutaneous fistula.

  12. Liquids with permanent porosity

    NASA Astrophysics Data System (ADS)

    Giri, Nicola; Del Pópolo, Mario G.; Melaugh, Gavin; Greenaway, Rebecca L.; Rätzke, Klaus; Koschine, Tönjes; Pison, Laure; Gomes, Margarida F. Costa; Cooper, Andrew I.; James, Stuart L.

    2015-11-01

    Porous solids such as zeolites and metal-organic frameworks are useful in molecular separation and in catalysis, but their solid nature can impose limitations. For example, liquid solvents, rather than porous solids, are the most mature technology for post-combustion capture of carbon dioxide because liquid circulation systems are more easily retrofitted to existing plants. Solid porous adsorbents offer major benefits, such as lower energy penalties in adsorption-desorption cycles, but they are difficult to implement in conventional flow processes. Materials that combine the properties of fluidity and permanent porosity could therefore offer technological advantages, but permanent porosity is not associated with conventional liquids. Here we report free-flowing liquids whose bulk properties are determined by their permanent porosity. To achieve this, we designed cage molecules that provide a well-defined pore space and that are highly soluble in solvents whose molecules are too large to enter the pores. The concentration of unoccupied cages can thus be around 500 times greater than in other molecular solutions that contain cavities, resulting in a marked change in bulk properties, such as an eightfold increase in the solubility of methane gas. Our results provide the basis for development of a new class of functional porous materials for chemical processes, and we present a one-step, multigram scale-up route for highly soluble ‘scrambled’ porous cages prepared from a mixture of commercially available reagents. The unifying design principle for these materials is the avoidance of functional groups that can penetrate into the molecular cage cavities.

  13. A closure test for time-specific capture-recapture data

    USGS Publications Warehouse

    Stanley, T.R.; Burnham, K.P.

    1999-01-01

    The assumption of demographic closure in the analysis of capture-recapture data under closed-population models is of fundamental importance. Yet, little progress has been made in the development of omnibus tests of the closure assumption. We present a closure test for time-specific data that, in principle, tests the null hypothesis of closed-population model M(t) against the open-population Jolly-Seber model as a specific alternative. This test is chi-square, and can be decomposed into informative components that can be interpreted to determine the nature of closure violations. The test is most sensitive to permanent emigration and least sensitive to temporary emigration, and is of intermediate sensitivity to permanent or temporary immigration. This test is a versatile tool for testing the assumption of demographic closure in the analysis of capture-recapture data.

  14. Quick actuating closure

    NASA Technical Reports Server (NTRS)

    White, III, Dorsey E. (Inventor); Updike, deceased, Benjamin T. (Inventor); Allred, Johnny W. (Inventor)

    1989-01-01

    A quick actuating closure for a pressure vessel 80 in which a wedge ring 30 with a conical outer surface 31 is moved forward to force shear blocks 40, with conical inner surfaces 41, radially outward to lock an end closure plug 70 within an opening 81 in the pressure vessel 80. A seal ring 60 and a preload ramp 50 sit between the shear blocks 40 and the end closure plug 70 to provide a backup sealing capability. Conical surfaces 44 and 55 of the preload ramp 50 and the shear blocks 40 interact to force the seal ring 60 into shoulders 73 and 85 in the end closure plug 70 and opening 81 to form a tight seal. The end closure plug 70 is unlocked by moving the wedge ring 30 rearward, which causes T-bars 32 of the wedge ring 30 riding within T -slots 42 of the shear blocks 40 to force them radially inward. The end closure plug 70 is then removed, allowing access to the interior of the pressure vessel 80.

  15. Self-testing security sensor for monitoring closure of vault doors and the like

    DOEpatents

    Cawthorne, Duane C.

    1997-05-27

    A self-testing device is provided for a monitoring system for monitoring whether a closure member such as a door or window is closed. The monitoring system includes a switch unit mounted on the frame of the closure member being monitored and including magnetically biased switches connected in one or more electrical monitoring circuits, and a door magnet unit mounted on the closure member being monitored. The door magnet includes one or more permanent magnets that produce a magnetic field which, when the closure member is closed, cause said switches to assume a first state. When the closure member is opened, the switches switch to a second, alarm state. The self-testing device is electrically controllable from a remote location and produces a canceling or diverting magnetic field which simulates the effect of movement of the closure member from the closed position thereof without any actual movement of the member.

  16. Self-testing security sensor for monitoring closure of vault doors and the like

    DOEpatents

    Cawthorne, D.C.

    1997-05-27

    A self-testing device is provided for a monitoring system for monitoring whether a closure member such as a door or window is closed. The monitoring system includes a switch unit mounted on the frame of the closure member being monitored and including magnetically biased switches connected in one or more electrical monitoring circuits, and a door magnet unit mounted on the closure member being monitored. The door magnet includes one or more permanent magnets that produce a magnetic field which, when the closure member is closed, cause said switches to assume a first state. When the closure member is opened, the switches switch to a second, alarm state. The self-testing device is electrically controllable from a remote location and produces a canceling or diverting magnetic field which simulates the effect of movement of the closure member from the closed position thereof without any actual movement of the member. 5 figs.

  17. Oscillating Permanent Magnets.

    ERIC Educational Resources Information Center

    Michaelis, M. M.; Haines, C. M.

    1989-01-01

    Describes several ways to partially levitate permanent magnets. Computes field line geometries and oscillation frequencies. Provides several diagrams illustrating the mechanism of the oscillation. (YP)

  18. Tank closure reducing grout

    SciTech Connect

    Caldwell, T.B.

    1997-04-18

    A reducing grout has been developed for closing high level waste tanks at the Savannah River Site in Aiken, South Carolina. The grout has a low redox potential, which minimizes the mobility of Sr{sup 90}, the radionuclide with the highest dose potential after closure. The grout also has a high pH which reduces the solubility of the plutonium isotopes. The grout has a high compressive strength and low permeability, which enhances its ability to limit the migration of contaminants after closure. The grout was designed and tested by Construction Technology Laboratories, Inc. Placement methods were developed by the Savannah River Site personnel.

  19. Higher order turbulence closure models

    NASA Technical Reports Server (NTRS)

    Amano, Ryoichi S.; Chai, John C.; Chen, Jau-Der

    1988-01-01

    Theoretical models are developed and numerical studies conducted on various types of flows including both elliptic and parabolic. The purpose of this study is to find better higher order closure models for the computations of complex flows. This report summarizes three new achievements: (1) completion of the Reynolds-stress closure by developing a new pressure-strain correlation; (2) development of a parabolic code to compute jets and wakes; and, (3) application to a flow through a 180 deg turnaround duct by adopting a boundary fitted coordinate system. In the above mentioned models near-wall models are developed for pressure-strain correlation and third-moment, and incorporated into the transport equations. This addition improved the results considerably and is recommended for future computations. A new parabolic code to solve shear flows without coordinate tranformations is developed and incorporated in this study. This code uses the structure of the finite volume method to solve the governing equations implicitly. The code was validated with the experimental results available in the literature.

  20. Accelerating cleanup: Paths to closure

    SciTech Connect

    Edwards, C.

    1998-06-30

    This document was previously referred to as the Draft 2006 Plan. As part of the DOE`s national strategy, the Richland Operations Office`s Paths to Closure summarizes an integrated path forward for environmental cleanup at the Hanford Site. The Hanford Site underwent a concerted effort between 1994 and 1996 to accelerate the cleanup of the Site. These efforts are reflected in the current Site Baseline. This document describes the current Site Baseline and suggests strategies for further improvements in scope, schedule and cost. The Environmental Management program decided to change the name of the draft strategy and the document describing it in response to a series of stakeholder concerns, including the practicality of achieving widespread cleanup by 2006. Also, EM was concerned that calling the document a plan could be misconstrued to be a proposal by DOE or a decision-making document. The change in name, however, does not diminish the 2006 vision. To that end, Paths to Closure retains a focus on 2006, which serves as a point in time around which objectives and goals are established.

  1. ROCKET PORT CLOSURE

    DOEpatents

    Mattingly, J.T.

    1963-02-12

    This invention provides a simple pressure-actuated closure whereby windowless observation ports are opened to the atmosphere at preselected altitudes. The closure comprises a disk which seals a windowless observation port in rocket hull. An evacuated instrument compartment is affixed to the rocket hull adjacent the inner surface of the disk, while the outer disk surface is exposed to the atmosphere through which the rocket is traveling. The pressure differential between the evacuated instrument compartment and the relatively high pressure external atmosphere forces the disk against the edge of the observation port, thereby effecting a tight seai. The instrument compartment is evacuated to a pressure equal to the atmospheric pressure existing at the altitude at which it is desiretl that the closure should open. When the rocket reaches this preselected altitude, the inwardly directed atmospheric force on the disk is just equaled by the residual air pressure force within the instrument compartment. Consequently, the closure disk falls away and uncovers the open observation port. The separation of the disk from the rocket hull actuates a switch which energizes the mechanism of a detecting instrument disposed within the instrument compartment. (AE C)

  2. Leading a hospital closure.

    PubMed

    Lucey, Paula A

    2002-01-01

    Hospital closures have become more common. The challenges facing a nursing leader in this situation are complex and difficult. This author suggests that looking for new beginnings rather than focusing on endings created an approach to closing a public hospital. The article includes approaches to employee morale, staffing, and patient care.

  3. Permanent magnet assembly

    DOEpatents

    Chell, Jeremy; Zimm, Carl B.

    2006-12-12

    A permanent magnet assembly is disclosed that is adapted to provide a magnetic field across an arc-shaped gap. Such a permanent magnet assembly can be used, for example, to provide a time-varying magnetic field to an annular region for use in a magnetic refrigerator.

  4. Ring closure in actin polymers

    NASA Astrophysics Data System (ADS)

    Sinha, Supurna; Chattopadhyay, Sebanti

    2017-03-01

    We present an analysis for the ring closure probability of semiflexible polymers within the pure bend Worm Like Chain (WLC) model. The ring closure probability predicted from our analysis can be tested against fluorescent actin cyclization experiments. We also discuss the effect of ring closure on bend angle fluctuations in actin polymers.

  5. 2401-W Waste storage building closure plan

    SciTech Connect

    LUKE, S.M.

    1999-07-15

    This plan describes the performance standards met and closure activities conducted to achieve clean closure of the 2401-W Waste Storage Building (2401-W) (Figure I). In August 1998, after the last waste container was removed from 2401-W, the U.S. Department of Energy, Richland Operations Office (DOE-RL) notified Washington State Department of Ecology (Ecology) in writing that the 2401-W would no longer receive waste and would be closed as a Resource Conservation and Recovery Act (RCRA) of 1976 treatment, storage, and/or disposal (TSD) unit (98-EAP-475). Pursuant to this notification, closure activities were conducted, as described in this plan, in accordance with Washington Administrative Code (WAC) 173-303-610 and completed on February 9, 1999. Ecology witnessed the closure activities. Consistent with clean closure, no postclosure activities will be necessary. Because 2401-W is a portion of the Central Waste Complex (CWC), these closure activities become the basis for removing this building from the CWC TSD unit boundary. The 2401-W is a pre-engineered steel building with a sealed concrete floor and a 15.2-centimeter concrete curb around the perimeter of the floor. This building operated from April 1988 until August 1998 storing non-liquid containerized mixed waste. All waste storage occurred indoors. No potential existed for 2401-W operations to have impacted soil. A review of operating records and interviews with cognizant operations personnel indicated that no waste spills occurred in this building (Appendix A). After all waste containers were removed, a radiation survey of the 2401-W floor for radiological release of the building was performed December 17, 1998, which identified no radiological contamination (Appendix B).

  6. Hospital closure and economic efficiency.

    PubMed

    Capps, Cory; Dranove, David; Lindrooth, Richard C

    2010-01-01

    We present a new framework for assessing the effects of hospital closures on social welfare and the local economy. While patient welfare necessarily declines when patients lose access to a hospital, closures also tend to reduce costs. We study five hospital closures in two states and find that urban hospital bailouts reduce aggregate social welfare: on balance, the cost savings from closures more than offset the reduction in patient welfare. However, because some of the cost savings are shared nationally, total surplus in the local community may decline following a hospital closure.

  7. Recommendations for managing hospital closure.

    PubMed

    van der Wal, R; Bouthillette, F; Havlovic, S J

    1998-01-01

    An acute care hospital was closed by the British Columbia Ministry of Health in 1993. A research study was conducted to investigate the ways closure of the hospital affected hospital employees and to identify ways to facilitate the closure/reorganization process. Unstructured interviews were conducted with 25 employees around the time of closure and six months after the closure. In the category Living with Closure, six themes arose from the qualitative analysis. They related to (1) provision of information; (2) effect of closure on the working environment and colleagues; (3) perceived stress; (4) recognition of one's worth; (5) provision of support services; and (6) the process of having a new job. The authors offer recommendations stemming from the analysis, which are intended to assist others planning for future hospital reorganizations or closures.

  8. Permanency and the Foster Care System.

    PubMed

    Lockwood, Katie K; Friedman, Susan; Christian, Cindy W

    2015-10-01

    Each year over 20,000 youth age out of the child welfare system without reaching a permanent placement in a family. Certain children, such as those spending extended time in foster care, with a diagnosed disability, or adolescents, are at the highest risk for aging out. As young adults, this population is at and increased risk of incarceration; food, housing, and income insecurity; unemployment; educational deficits; receipt of public assistance; and mental health disorders. We reviewed the literature on foster care legislation, permanency, outcomes, and interventions. The outcomes of children who age out of the child welfare system are poor. Interventions to increase permanency include training programs for youth and foster parents, age extension for foster care and insurance coverage, an adoption tax credit, and specialized services and programs that support youth preparing for their transition to adulthood. Future ideas include expanding mentoring, educational support, mental health services, and post-permanency services to foster stability in foster care placements and encourage permanency planning. Children in the child welfare system are at a high risk for physical, mental, and emotional health problems that can lead to placement instability and create barriers to achieving permanency. Failure to reach the permanency of a family leads to poor outcomes, which have negative effects on the individual and society. Supporting youth in foster care throughout transitions may mediate the negative outcomes that have historically followed placement in out-of-home care.

  9. Femoral Artery Stenosis Following Percutaneous Closure Using a Starclose Closure Device

    SciTech Connect

    Bent, Clare Louise; Kyriakides, Constantinos; Matson, Matthew

    2008-07-15

    Starclose (Abbott Vascular Devices, Redwood City, CA) is a new arterial closure device that seals a femoral puncture site with an extravascular star-shaped nitinol clip. The clip projects small tines into the arterial wall which fold inward, causing the arterial wall to pucker, producing a purse-string-like seal closing the puncture site. The case history is that of a 76-year-old female patient who underwent day-case percutaneous diagnostic coronary angiography. A Starclose femoral artery closure device was used to achieve hemostasis with subsequent femoral artery stenosis.

  10. The Effect of Group Research and Cooperative Reading-Writing-Application Techniques in the Unit of "What Is the Earth's Crust Made Of?" on The Academic Achievements of the Students and the Permanent

    ERIC Educational Resources Information Center

    Aksoy, Gokhan; Gurbuz, Fatih

    2013-01-01

    The aim of this study is to determine the effect of the group research technique and cooperative reading-writing application technique in the science and technology course in the unit of "what is the Earth's crust made of" on the academic achievement of the students and whether the change observed in the student achievement is permanent…

  11. Spacesuit torso closure

    NASA Technical Reports Server (NTRS)

    Webbon, B. W.; Vykukal, H. C. (Inventor)

    1978-01-01

    A simple, economical and reliable entry closure is described for joining opposite halves of a torso section for a pressure suit in a manner which simplifies self-donning. A single coupling joins coaxially aligned, axially separable, tubular segments of a hard spacesuit along an angulated zone of separation, adapted to be mated in an hermetrically sealing relation. A releasable C section clamp secures the members in their mated relationship.

  12. Yucca Mountain Waste Package Closure System Robotic Welding and Inspection System

    SciTech Connect

    C. I. Nichol; D. P. Pace; E. D. Larsen; T. R. McJunkin; D. E. Clark; M. L. Clark; K. L. Skinner; A. D. Watkins; H. B. Smartt

    2011-10-01

    The Waste Package Closure System (WPCS), for the closure of radioactive waste in canisters for permanent storage of spent nuclear fuel (SNF) and high-level waste in the Yucca Mountain Repository was designed, fabricated, and successfully demonstrated at the Idaho National Laboratory (INL). This article focuses on the robotic hardware and tools necessary to remotely weld and inspect the closure lid welds. The system was operated remotely and designed for use in a radiation field, due to the SNF contained in the waste packages being closed.

  13. CONSIDERATIONS FOR GROUT FORMULATIONS FOR FACILITY CLOSURES USING IN SITU STRATEGIES

    SciTech Connect

    Gladden, J.; Serrato, M.; Langton, C.; Long, T.; Blankenship, J.; Hannah, G.; Stubblefield, R.; Szilagyi, A.

    2010-08-25

    The U.S. Department of Energy (DOE) is conducting in situ closures (entombment) at a large number of facilities throughout the complex. Among the largest closure actions currently underway are the closures of the P and R Reactors at the Savannah River Site (SRS), near Aiken, South Carolina. In these facilities, subgrade open spaces are being stabilized with grout; this ensures the long term structural integrity of the facilities and permanently immobilizes and isolates residual contamination. The large size and structural complexity of these facilities present a wide variety of challenges for the identification and selection of appropriate fill materials. Considerations for grout formulations must account for flowability, long term stability, set times, heat generation and interactions with materials within the structure. The large size and configuration of the facility necessitates that grout must be pumped from the exterior to the spaces to be filled, which requires that the material must retain a high degree of flowability to move through piping without clogging while achieving the required leveling properties at the pour site. Set times and curing properties must be controlled to meet operations schedules, while not generating sufficient heat to compromise the properties of the fill material. The properties of residual materials can result in additional requirements for grout formulations. If significant quantities of aluminum are present in the facility, common formulations of highly alkaline grouts may not be appropriate because of the potential for hydrogen generation with the resultant risks. SRS is developing specialized inorganic grout formulations that are designed to address this issue. One circum-neutral chemical grout formulation identified for initial consideration did not possess the proper chemical characteristics, having exceptionally short set times and high heat of hydration. Research efforts are directed toward developing grout formulations

  14. Spontaneous closure of midline diastema following frenectomy.

    PubMed

    Koora, Kiran; Muthu, M S; Rathna, Prabhu V

    2007-03-01

    Maxillary midline diastema is a common aesthetic problem in mixed and early permanent dentitions. The space can occur either as a transient malocclusion or created by developmental, pathological or iatrogenical factors. Many innovative therapies varying from restorative procedures such as composite build-up to surgery (frenectomies) and orthodontics are available. Although literature says every frenectomy procedure should be preceded by orthodontic treatment, we opted for frenectomy technique without any orthodontic intervention. Presented herewith is a case report of a 9-year-old girl with a high frenal attachment that had caused spacing of the maxillary central incisors. A spontaneous closure of the midline diastema was noted within 2 months following frenectomy. The patient was followed up for 4 months after which the space remained closed and there was no necessity for an orthodontic treatment at a later stage.

  15. Nevada Test Site closure program

    SciTech Connect

    Shenk, D.P.

    1994-08-01

    This report is a summary of the history, design and development, procurement, fabrication, installation and operation of the closures used as containment devices on underground nuclear tests at the Nevada Test Site. It also addresses the closure program mothball and start-up procedures. The Closure Program Document Index and equipment inventories, included as appendices, serve as location directories for future document reference and equipment use.

  16. Orbiter door closure tools

    NASA Technical Reports Server (NTRS)

    Acres, W. R.

    1980-01-01

    Safe reentry of the shuttle orbiter requires that the payload bay doors be closed and securely latched. Since a malfunction in the door drive or bulkhead latch systems could make safe reentry impossible, the requirement to provide tools to manually close and secure the doors was implemented. The tools would disconnect a disabled door or latch closure system and close and secure the doors if the normal system failed. The tools required to perform these tasks have evolved into a set that consists of a tubing cutter, a winch, a latching tool, and a bolt extractor. The design, fabrication, and performance tests of each tool are described.

  17. System for closure of a physical anomaly

    DOEpatents

    Bearinger, Jane P; Maitland, Duncan J; Schumann, Daniel L; Wilson, Thomas S

    2014-11-11

    Systems for closure of a physical anomaly. Closure is accomplished by a closure body with an exterior surface. The exterior surface contacts the opening of the anomaly and closes the anomaly. The closure body has a primary shape for closing the anomaly and a secondary shape for being positioned in the physical anomaly. The closure body preferably comprises a shape memory polymer.

  18. FINAL CLOSURE PLAN SURFACE IMPOUNDMENTS CLOSURE, SITE 300

    SciTech Connect

    Lane, J E; Scott, J E; Mathews, S E

    2004-09-29

    Lawrence Livermore National Laboratory of the University of California (LLNL) operates two Class II surface impoundments that store wastewater that is discharged from a number of buildings located on the Site 300 Facility (Site 300). The wastewater is the by-product of explosives processing. Reduction in the volume of water discharged from these buildings over the past several years has significantly reduced the wastewater storage needs. In addition, the impoundments were constructed in 1984, and the high-density polyethylene (HDPE) geomembrane liners are nearing the end of their service life. The purpose of this project is to clean close the surface impoundments and provide new wastewater storage using portable, above ground storage tanks at six locations. The tanks will be installed prior to closure of the impoundments and will include heaters for allowing evaporation during relatively cool weather. Golder Associates (Golder) has prepared this Final Closure Plan (Closure Plan) on behalf of LLNL to address construction associated with the clean closure of the impoundments. This Closure Plan complies with State Water Resources Control Board (SWRCB) Section 21400 of the California Code of Regulations Title 27 (27 CCR {section}21400). As required by these regulations and guidance, this Plan provides the following information: (1) A site characterization, including the site location, history, current operations, and geology and hydrogeology; (2) The regulatory requirements relevant to clean closure of the impoundments; (3) The closure procedures; and, (4) The procedures for validation and documentation of clean closure.

  19. Management of over-retained mandibular deciduous second molars with and without permanent successors.

    PubMed

    Sabri, Roy

    2008-01-01

    The objective of this article is to describe the various clinical situations of prolonged retention of mandibular deciduous second molars. Indications for orthodontic space closure in the absence of permanent successors and treatment alternatives in space opening, including retaining the deciduous molars, are described. Periodic monitoring, composite buildups, and indications and timing of extraction of infraoccluded and ankylosed deciduous molars with and without permanent successors are reviewed.

  20. Optical closure of parameterized bio-optical relationships

    NASA Astrophysics Data System (ADS)

    He, Shuangyan; Fischer, Jürgen; Schaale, Michael; He, Ming-xia

    2014-03-01

    An optical closure study on bio-optical relationships was carried out using radiative transfer model matrix operator method developed by Freie Universität Berlin. As a case study, the optical closure of bio-optical relationships empirically parameterized with in situ data for the East China Sea was examined. Remote-sensing reflectance ( R rs) was computed from the inherent optical properties predicted by these biooptical relationships and compared with published in situ data. It was found that the simulated R rs was overestimated for turbid water. To achieve optical closure, bio-optical relationships for absorption and scattering coefficients for suspended particulate matter were adjusted. Furthermore, the results show that the Fournier and Forand phase functions obtained from the adjusted relationships perform better than the Petzold phase function. Therefore, before bio-optical relationships are used for a local sea area, the optical closure should be examined.

  1. Micromachined permanent magnets and their MEMS applications

    NASA Astrophysics Data System (ADS)

    Cho, Hyoung Jin

    2002-01-01

    In this research, new micromachined permanent magnets have been proposed, developed and characterized for MEMS applications. In realizing micromachined permanent magnets, a new electroplating technique using external magnetic field and a bumper filling technique using a photolithographically defined mold with resin bonded magnetic particles have been developed. The newly developed micromachining techniques allow thick film-type permanent magnet components to be integrated to magnetic MEMS devices with dimensional control and alignment. Permanent magnet arrays with the dimensions ranging from 30 mum to 200 mum have been developed with an energy density up to 2.7 kJ/m3 in precisely defined forms in the micro scale. For the applications of the permanent magnets developed in this work, three novel magnetic MEMS devices such as a bi-directional magnetic actuator, a magnetically driven optical scanner, and a magnetic cell separator have been successfully realized. After design and modeling, each device has been fabricated and fully characterized. The bi-directional actuator with the electroplated permanent magnet array has achieved bi-directional motion clearly and shown good agreement with the analytical and simulated models. The optical scanner has shown linear bi-directional response under static actuation and stable bi-directional scanning performance under dynamic actuation. As a potential BioMEMS application of the developed permanent magnet, the prototype magnetic cell separator using the electroplated permanent magnet strip array has been proposed and demonstrated for magnetic bead patterning. In conclusion, new thick film-type, electroplated CoNiMnP and epoxy resin bonded Sr-ferrite permanent magnets have been developed and characterized, and then, three new magnetic MEMS devices using the permanent magnets such as a bi-directional magnetic actuator, an optical scanner and a magnetic cell separator have been realized in this research. The new micromachined

  2. Management of a Nonvital Young Permanent Tooth by Pulp Revascularization

    PubMed Central

    Chandran, Vidya; Sivadas, G

    2014-01-01

    ABSTRACT% This report presents the case of a 10-year-old patient with a nonvital young permanent tooth which was managed by pulp revascularization. Following disinfection of the canal by irrigation with NaOCl and use of a triantibiotic paste, a scaffold was created by inducing the formation of a blood clot within the canal. At the subsequent follow-up visits, the patient was asymptomatic, with normal response to percussion, normal periodontal probing depths, and no abnormal mobility. The radiographs showed evidence of continued apical root development with increase in root length, signs of apical closure and increase in thickness of dentinal walls. Thus, this case adds to the growing evidence supporting the revascularization approach as an option for management of nonvital young permanent teeth. How to cite this article: Chandran V, Chacko V, Sivadas G. Management of a Nonvital Young Permanent Tooth by Pulp Revascularization. Int J Clin Pediatr Dent 2014;7(3):213-216. PMID:25709305

  3. Accelerating cleanup: Paths to closure

    SciTech Connect

    1998-06-01

    This report describes the status of Environmental Management`s (EM`s) cleanup program and a direction forward to complete achievement of the 2006 vision. Achieving the 2006 vision results in significant benefits related to accomplishing EM program objectives. As DOE sites accelerate cleanup activities, risks to public health, the environment, and worker safety and health are all reduced. Finding more efficient ways to conduct work can result in making compliance with applicable environmental requirements easier to achieve. Finally, as cleanup activities at sites are completed, the EM program can focus attention and resources on the small number of sites with more complex cleanup challenges. Chapter 1 describes the process by which this report has been developed and what it hopes to accomplish, its relationship to the EM decision-making process, and a general background of the EM mission and program. Chapter 2 describes how the site-by-site projections were constructed, and summarizes, for each of DOE`s 11 Operations/Field Offices, the projected costs and schedules for completing the cleanup mission. Chapter 3 presents summaries of the detailed cleanup projections from three of the 11 Operations/Field Offices: Rocky Flats (Colorado), Richland (Washington), and Savannah River (South Carolina). The remaining eight Operations/Field Office summaries are in Appendix E. Chapter 4 reviews the cost drivers, budgetary constraints, and performance enhancements underlying the detailed analysis of the 353 projects that comprise EM`s accelerated cleanup and closure effort. Chapter 5 describes a management system to support the EM program. Chapter 6 provides responses to the general comments received on the February draft of this document.

  4. Closedure - Mine Closure Technologies Resource

    NASA Astrophysics Data System (ADS)

    Kauppila, Päivi; Kauppila, Tommi; Pasanen, Antti; Backnäs, Soile; Liisa Räisänen, Marja; Turunen, Kaisa; Karlsson, Teemu; Solismaa, Lauri; Hentinen, Kimmo

    2015-04-01

    Closure of mining operations is an essential part of the development of eco-efficient mining and the Green Mining concept in Finland to reduce the environmental footprint of mining. Closedure is a 2-year joint research project between Geological Survey of Finland and Technical Research Centre of Finland that aims at developing accessible tools and resources for planning, executing and monitoring mine closure. The main outcome of the Closedure project is an updatable wiki technology-based internet platform (http://mineclosure.gtk.fi) in which comprehensive guidance on the mine closure is provided and main methods and technologies related to mine closure are evaluated. Closedure also provides new data on the key issues of mine closure, such as performance of passive water treatment in Finland, applicability of test methods for evaluating cover structures for mining wastes, prediction of water effluents from mine wastes, and isotopic and geophysical methods to recognize contaminant transport paths in crystalline bedrock.

  5. 75 FR 54183 - Notice of Temporary Closure for Lands West of North Menan Butte, Idaho

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-09-03

    ... of a resource management plan (RMP), which will provide permanent management direction for the area... Doc No: 2010-22079] DEPARTMENT OF THE INTERIOR Bureau of Land Management [LLIDI01000-10-L12200000... Management; Idaho Falls District, Upper Snake Field Office, Idaho. ACTION: Temporary closure. SUMMARY:...

  6. Spontaneous ileostomy closure

    PubMed Central

    Alyami, Mohammad S.; Lundberg, Peter W.; Cotte, Eddy G.; Glehen, Olivier J.

    2016-01-01

    Iatrogenic ileostomies are routinely placed during colorectal surgery for the diversion of intestinal contents to permit healing of the distal anastomosis prior to elective reversal. We present an interesting case of spontaneous closure of a diverting ileostomy without any adverse effects to the patient. A 65-year-old woman, positive for hereditary non-polyposis colorectal cancer type-I, with locally invasive cancer of the distal colon underwent en-bloc total colectomy, hysterectomy, and bilateral salpingoophorectomy with creation of a proximal loop ileostomy. The ostomy temporarily closed without reoperation at 10 weeks, after spontaneously reopening, it definitively closed, again without surgical intervention at 18 weeks following the original surgery. This rare phenomenon has occurred following variable colorectal pathology and is poorly understood, particularly in patients with aggressive disease and adjunct perioperative interventions. PMID:27279518

  7. CPT-hole closure

    USGS Publications Warehouse

    Noce, T.E.; Holzer, T.L.

    2003-01-01

    The long-term stability of deep holes 1.75 inches. (4.4 cm) in diameter by 98.4 feet (30 m) created by cone penetration testing (CPT) was monitored at a site in California underlain by Holocene and Pleistocene age alluvial fan deposits. Portions of the holes remained open both below and above the 28.6-foot (8.7 m)-deep water table for approximately three years, when the experiment was terminated. Hole closure appears to be a very slow process that may take decades in the stiff soils studied here. Other experience suggests holes in softer soils may also remain open. Thus, despite their small diameter, CPT holes may remain open for years and provide paths for rapid migration of contaminants. The observations confirm the need to grout holes created by CPT soundings as well as other direct-push techniques in areas where protection of shallow ground water is important.

  8. A Novel Option of Uninterrupted Closure of Surgical Wounds

    PubMed Central

    Sulamanidze, Marlen A; Sulamanidze, George M

    2009-01-01

    Background: A cosmetically pleasing postoperative scar is an important aim of all aesthetic surgeries. Use of proper suture materials for delicate and gentle suturing of the operative injury is an important requirement for achieving satisfactory scars. However, closure of the edges of wounds by means of conventional suture materials does not always meet the requirements to achieve this objective. Aim: To simplify and facilitate the process of surgical wound closure, to improve the quality of scar, and to achieve a good cosmetic effect through the introduction of a new type of suture material. Materials and Methods: We have introduced a new surgical suturing material—a nontraumatic, barbed thread connected with the suture needle—APTOS SUTURE (European patent 1075843 as of 1999). Presented herein is a new modification of the technique of uninterrupted subcutaneous and intracutaneous suturing of wound edges, and the details of our experience with this material. Results: Our experience shows that, with use of APTOS, wound closure is carried out easily and quickly. The wound remains stable, the time of healing is shortened, and the process of suture removal is simplified, resulting in an aesthetically pleasing scar. Conclusions: The technique of surgical wound suturing proposed herein is a simple, facilitated, and efficient option of wound-edge closure, which can successfully be used, both in general and in aesthetic surgery for wound closure, such as plasty of scars, face lift, mammoplasty, and abdominal plasty. PMID:20808595

  9. Angle closure in younger patients.

    PubMed Central

    Chang, Brian M; Liebmann, Jeffrey M; Ritch, Robert

    2002-01-01

    PURPOSE: Angle-closure glaucoma is rare in children and young adults. Only scattered cases associated with specific clinical entities have been reported. We evaluated the findings in patients in our database aged 40 or younger with angle closure. METHODS: Our database was searched for patients with angle closure who were 40 years old or younger. Data recorded included age at initial consultation; age at the time of diagnosis; gender; results of slit-lamp examination, gonioscopy, and ultrasound biomicroscopy (from 1993 onward); clinical diagnosis; and therapy. Patients with previous incisional surgery were excluded, as were patients with anterior chamber proliferative mechanisms leading to angle closure. RESULTS: Sixty-seven patients (49 females, 18 males) met entry criteria. Mean age (+/- SD) at the time of consultation was 34.4 +/- 9.4 years (range, 3-68 years). Diagnoses included plateau iris syndrome (35 patients), iridociliary cysts (8 patients), retinopathy of prematurity (7 patients), uveitis (5 patients), isolated nanophthalmos (3 patients), relative pupillary block (2 patients), Weill-Marchesani syndrome (3 patients), and 1 patient each with Marfan syndrome, miotic-induced angle closure, persistent hyperplastic primary vitreous, and idiopathic lens subluxation. CONCLUSION: The etiology of angle closure in young persons is different from that in the older population and is typically associated with structural or developmental ocular anomalies rather than relative pupillary block. Following laser iridotomy, these eyes should be monitored for recurrent angle closure and the need for additional laser or incisional surgical intervention. PMID:12545694

  10. Managing Permanent Objects

    DTIC Science & Technology

    1984-11-01

    sorage me hanism is the Chunk Management System ( CMS ). CMS provides a database-like interface for POMW. On first reference to a permanent object POMS...19] M.P. Atkinson, K.J. Chisholm, and W.P. Cockshott. CMS - A Chunk Management System . Technical Report CSR-110-82, Department of Computer Science...database manager . Creating and using emibedded systems is not always bad. In most large programming projets one ends up constructing and using some sort

  11. Permanent magnet design methodology

    NASA Technical Reports Server (NTRS)

    Leupold, Herbert A.

    1991-01-01

    Design techniques developed for the exploitation of high energy magnetically rigid materials such as Sm-Co and Nd-Fe-B have resulted in a revolution in kind rather than in degree in the design of a variety of electron guidance structures for ballistic and aerospace applications. Salient examples are listed. Several prototype models were developed. These structures are discussed in some detail: permanent magnet solenoids, transverse field sources, periodic structures, and very high field structures.

  12. Postoperative permanent pressure alopecia.

    PubMed

    Chang, Zi Yun; Ngian, Jan; Chong, Claudia; Chong, Chin Ted; Liew, Qui Yin

    2016-04-01

    A 49-year-old Chinese female underwent elective laparoscopic assisted Whipple's surgery lasting 12 h. This was complicated by postoperative pressure alopecia at the occipital area of the scalp. Pressure-induced hair loss after general anaesthesia is uncommon and typically temporary, but may be disconcerting to the patient. We report this case of postoperative permanent pressure alopecia due to its rarity in the anaesthesia/local literature, and review the risk factors for its development.

  13. 40 CFR 265.280 - Closure and post-closure.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... contaminants caused by wind erosion; and (4) Compliance with § 265.276 concerning the growth of food-chain... unit as appropriate for its post-closure use; (3) Assure that growth of food chain crops complies...

  14. 40 CFR 265.280 - Closure and post-closure.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... contaminants caused by wind erosion; and (4) Compliance with § 265.276 concerning the growth of food-chain... unit as appropriate for its post-closure use; (3) Assure that growth of food chain crops complies...

  15. 40 CFR 265.280 - Closure and post-closure.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... contaminants caused by wind erosion; and (4) Compliance with § 265.276 concerning the growth of food-chain... unit as appropriate for its post-closure use; (3) Assure that growth of food chain crops complies...

  16. 40 CFR 265.280 - Closure and post-closure.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... contaminants caused by wind erosion; and (4) Compliance with § 265.276 concerning the growth of food-chain... unit as appropriate for its post-closure use; (3) Assure that growth of food chain crops complies...

  17. 40 CFR 265.280 - Closure and post-closure.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... contaminants caused by wind erosion; and (4) Compliance with § 265.276 concerning the growth of food-chain... unit as appropriate for its post-closure use; (3) Assure that growth of food chain crops complies...

  18. Pfannenstiel incision closure: a review of current skin closure techniques.

    PubMed

    Altman, Alon D; Allen, Victoria M; McNeil, Shelly A; Dempster, Jeffrey

    2009-06-01

    The goal of any skin closure technique is to produce appropriate skin approximation and adequate healing while minimizing pain, wound complications, cost, and scarring; the technique should be quick, cost-effective, and simple, while maximizing wound cosmesis and patient satisfaction. Although many studies have shown the superiority of staples for speed of closure, it is unclear if staples give a superior cosmetic result or reduce pain. Several randomized controlled trials have found that sutures are superior for cosmesis and that they decrease postoperative pain and are more cost-effective. There remains a paucity of data on wound infections and complications associated with closure technique. This review summarizes studies to date evaluating outcomes associated with wound closure using staples and sutures in repairing abdominal incisions and, in particular, assesses outcomes in the obstetric population with a Pfannenstiel incision.

  19. The Office of Site Closure: Progress in the Face of Challenges

    SciTech Connect

    Fiore, J. J.; Murphie, W. E.; Meador, S. W.

    2002-02-26

    The Office of Site Closure (OSC) was formed in November 1999 when the Department of Energy's (DOE's) Office of Environmental Management (EM) reorganized to focus specifically on site cleanup and closure. OSC's objective is to achieve safe and cost-effective cleanups and closures that are protective of our workers, the public, and the environment, now and in the future. Since its inception, OSC has focused on implementing a culture of safe closure, with emphasis in three primary areas: complete our responsibility for the Closure Sites Rocky Flats, Mound, Fernald, Ashtabula, and Weldon Spring; complete our responsibility for cleanup at sites where the DOE mission has been completed (examples include Battelle King Avenue and Battelle West Jefferson in Columbus, and General Atomics) or where other Departmental organizations have an ongoing mission (examples include the Brookhaven, Livermore, or Los Alamos National Laboratories, and the Nevada Test Site); and create a framework a nd develop specific business closure tools that will help sites close, such as guidance for and decisions on post-contract benefit liabilities, records retention, and Federal employee incentives for site closure. This paper discusses OSC's 2001 progress in achieving site cleanups, moving towards site closure, and developing specific business closure tools to support site closure. It describes the tools used to achieve progress towards cleanup and closure, such as the application of new technologies, changes in contracting approaches, and the development of agreements between sites and with host states. The paper also identifies upcoming challenges and explores options for how Headquarters and the sites can work together to address these challenges. Finally, it articulates OSC's new focus on oversight of Field Offices to ensure they have the systems in place to oversee contractor activities resulting in site cleanups and closures.

  20. Forensic Nursing Provides Closure in Workplace Fatality.

    PubMed

    Harris, Colin

    The Workers' Compensation Board of British Columbia in Canada is the provincial agency mandated to investigate workplace injuries and fatalities. In 2012, the Fatal and Serious Injuries Investigation section of this organization initiated the integration of forensic nursing expertise into the investigation of workplace incidents. The goals were to improve investigative outcomes and aid in prevention initiatives by achieving a more accurate understanding of incident causation through the application of forensic nursing science. An unexpected outcome of the use of forensic nursing expertise was providing closure for families through a deeper understanding of their loved one's tragic workplace incident.

  1. School Closures in New York City: Did Students Do Better after Their High Schools Were Closed?

    ERIC Educational Resources Information Center

    Kemple, James J.

    2016-01-01

    Much has been written about the controversy surrounding performance-based school closures, but there has been no rigorous assessment of their impact on student achievement. Does the closure process harm students who are enrolled in a school while it is being phased out? Are future students better-off because a low-performing option has been…

  2. Resource Conservation and Recovery Act (RCRA) closure sumamry for the Uranium Treatment Unit

    SciTech Connect

    1996-05-01

    This closure summary has been prepared for the Uranium Treatment Unit (UTU) located at the Y-12 Plant in Oak Ridge, Tennessee. The actions required to achieve closure of the UTU area are outlined in the Closure Plan, submitted to and approved by the Tennessee Department of Environmental and Conservation staff, respectively. The UTU was used to store and treat waste materials that are regulated by the Resource Conservation and Recovery Act. This closure summary details all steps that were performed to close the UTU in accordance with the approved plan.

  3. Closure and Sealing Design Calculation

    SciTech Connect

    T. Lahnalampi; J. Case

    2005-08-26

    The purpose of the ''Closure and Sealing Design Calculation'' is to illustrate closure and sealing methods for sealing shafts, ramps, and identify boreholes that require sealing in order to limit the potential of water infiltration. In addition, this calculation will provide a description of the magma that can reduce the consequences of an igneous event intersecting the repository. This calculation will also include a listing of the project requirements related to closure and sealing. The scope of this calculation is to: summarize applicable project requirements and codes relating to backfilling nonemplacement openings, removal of uncommitted materials from the subsurface, installation of drip shields, and erecting monuments; compile an inventory of boreholes that are found in the area of the subsurface repository; describe the magma bulkhead feature and location; and include figures for the proposed shaft and ramp seals. The objective of this calculation is to: categorize the boreholes for sealing by depth and proximity to the subsurface repository; develop drawing figures which show the location and geometry for the magma bulkhead; include the shaft seal figures and a proposed construction sequence; and include the ramp seal figure and a proposed construction sequence. The intent of this closure and sealing calculation is to support the License Application by providing a description of the closure and sealing methods for the Safety Analysis Report. The closure and sealing calculation will also provide input for Post Closure Activities by describing the location of the magma bulkhead. This calculation is limited to describing the final configuration of the sealing and backfill systems for the underground area. The methods and procedures used to place the backfill and remove uncommitted materials (such as concrete) from the repository and detailed design of the magma bulkhead will be the subject of separate analyses or calculations. Post-closure monitoring will not

  4. Permanent Turbidity-Standards

    PubMed Central

    Roessler, William G.; Brewer, Carl R.

    1967-01-01

    Permanent turbidity reference standards suitable for measurement of microbial suspensions were prepared by suspending finely divided titanium dioxide in aryl sulfonamide-formaldehyde or methylstyrene resins. Turbidities of these standards, adjusted to a useful range for microbiological and immunological studies, were compared with other reference standards in use today. Tube holders for a Coleman Photonephelometer and a Nepho-Colorimeter were modified to eliminate the water well and to allow use of optically standardized 10-, 16-, or 18-mm test tubes. The standards and the tube holders have been used satisfactorily for more than 12 years. Images Fig. 5 Fig. 6 PMID:6077410

  5. Permanence can be Defended.

    PubMed

    McGee, Andrew; Gardiner, Dale

    2017-03-01

    In donation after the circulatory-respiratory determination of death (DCDD), the dead donor rule requires that the donor be dead before organ procurement can proceed. Under the relevant limb of the Uniform Determination of Death Act 1981 (USA), a person is dead when the cessation of circulatory-respiratory function is 'irreversible'. Critics of current practice in DCDD have argued that the donor is not dead at the time organs are procured, and so the procurement of organs from these donors violates the dead donor rule. We offer a new argument here in defence of current DCDD practice, and, in particular, of the interpretation of the requirement of 'irreversibility' as permanence.

  6. RCRA closure of mixed waste impoundments

    SciTech Connect

    Blaha, F.J.; Greengard, T.C.; Arndt, M.B.

    1989-11-01

    A case study of a RCRA closure action at the Rocky Flats Plant is presented. Closure of the solar evaporation ponds involves removal and immobilization of a mixed hazardous/radioactive sludge, treatment of impounded water, groundwater monitoring, plume delineation, and collection and treatment of contaminated groundwater. The site closure is described within the context of regulatory negotiations, project schedules, risk assessment, clean versus dirty closure, cleanup levels, and approval of closure plans and reports. Lessons learned at Rocky Flats are summarized.

  7. Apexogenesis of a symptomatic mandibular first permanent molar with calcium hydroxide pulpotomy.

    PubMed

    Kontham, Ujwal R; Tiku, Amita M; Damle, Satyawan G; Kalaskar, Ritesh R

    2005-09-01

    Vital pulp therapy of immature, symptomatic permanent posterior teeth presents a challenge in pediatric endodontics. A case report is presented in which cervical pulpotomy with calcium hydroxide was performed on a cariously exposed mandibular first permanent molar. The patient was seen every 3 months for a total of 18 months for a clinical and radiographic follow up. During the follow-up period, root development, as evidenced by root lengthening, was observed. Apical closure was evident at the end of 19 months. As the root canals showed a tendency toward calcification, root canal treatment was carried out, followed by restoration of the tooth with a stainless-steel crown. The success of this single-visit apexogenesis procedure supports the contention that young pulp possesses remarkable reparative capacity, as well as resistance to bacterial infection due to greater vascularity, and that apexogenesis with calcium hydroxide apical closure pulpotomy can be attempted for continued root development of symptomatic, vital, permanent teeth.

  8. Care of patients with permanent tracheostomy.

    PubMed

    Everitt, Erica

    The third article in our series on tracheostomy care discusses the care of patients with a permanent tracheostomy. While these patients make up a small proportion of all patients who have a tracheostomy inserted, they have complex needs. This means they require practitioners in both acute and community settings, who have time, support and competent tracheostomy-care skills, to achieve a successful discharge and ongoing management of their tracheostomy.

  9. Cryogenic Permanent Magnet Undulators

    SciTech Connect

    Chavanne, J.; Lebec, G.; Penel, C.; Revol, F.; Kitegi, C.

    2010-06-23

    For an in-vacuum undulator operated at small gaps the permanent magnet material needs to be highly resistant to possible electron beam exposure. At room temperature, one generally uses Sm{sub 2}Co{sub 17} or high coercivity NdFeB magnets at the expense of a limited field performance. In a cryogenic permanent magnet undulator (CPMU), at a temperature of around 150 K, any NdFeB grade reveals a coercivity large enough to be radiation resistant. In particular, very high remanence NdFeB material can be used to build undulators with enhanced field and X-ray brilliance at high photon energy provided that the pre-baking of the undulator above 100 deg. C can be eliminated. The ESRF has developed a full scale 2 m long CPMU with a period of 18 mm. This prototype has been in operation on the ID6 test beamline since January 2008. A significant effort was put into the characterization of NdFeB material at low temperature, the development of dedicated magnetic measurement systems and cooling methods. The measured heat budget with beam is found to be larger than expected without compromising the smooth operation of the device. Leading on from this first experience, new CPMUs are currently being considered for the upgrade of the ESRF.

  10. Middle Miocene closure of the Central American Seaway

    NASA Astrophysics Data System (ADS)

    Montes, C.; Cardona, A.

    2014-12-01

    The final closure of the Panama Isthmus and permanent separation of Caribbean and Pacific waters is thought to have modified their salinity, faunistic assemblages, and ultimately, ocean circulation patterns and global climate. The Great American Biotic Interchange (GABI) is thought to have been the result of Plio-Pleistocene closure of the Isthmus that allowed land animals to massively cross the Isthmus. Similarly, the separation of Caribbean and Pacific waters by a rising Isthmus is thougth to be a prime example of vicariance. The role of Isthmus closure on global changes, however, remains controversial due in part to the difficulty of establishing a precise chronology of seaway closure. While timing of glaciation is well established, new data on the chronology of Isthmus emergence suggests that the process of closure is more complex, long, and old than previously thought. We sampled fluvial and shallow marine strata in northwesternmost South America to recover zircon grains for provenance analyses in the immediate vicinity of the docking site. Because the ages of magmatic provinces in northwestern South America and the Panama Isthmus are mutually exclusive, detrital zircon analyses provides a tool to evaluate land connections. We found that an uniquely Panamanian, 40-45 Ma (early Lutetian) detrital zircon fingerprint is abundant in middle Miocene strata, but absent in underlying lower Miocene and Oligocene strata of the northern Andes. This fingerprint represents the beginning of fluvial detrital exchange between the Panama arc and South America, and therefore marks the time of docking and the end of deep-water, and probably shallow-water connections by middle Miocene times.

  11. Achieving Zero Permanent Exclusions from School, Social Justice and Economy

    ERIC Educational Resources Information Center

    Parsons, Carl

    2010-01-01

    Zero exclusion schools are possible. More realistically, clusters of schools, with support, coordination and brokering by the local authority (LA) or through local partnerships, can organise and sustain an inclusive educational community. Exclusion from school is a quiet mockery of "Every Child Matters." Even with the coalition…

  12. Linearly exact parallel closures for slab geometry

    NASA Astrophysics Data System (ADS)

    Ji, Jeong-Young; Held, Eric D.; Jhang, Hogun

    2013-08-01

    Parallel closures are obtained by solving a linearized kinetic equation with a model collision operator using the Fourier transform method. The closures expressed in wave number space are exact for time-dependent linear problems to within the limits of the model collision operator. In the adiabatic, collisionless limit, an inverse Fourier transform is performed to obtain integral (nonlocal) parallel closures in real space; parallel heat flow and viscosity closures for density, temperature, and flow velocity equations replace Braginskii's parallel closure relations, and parallel flow velocity and heat flow closures for density and temperature equations replace Spitzer's parallel transport relations. It is verified that the closures reproduce the exact linear response function of Hammett and Perkins [Phys. Rev. Lett. 64, 3019 (1990)] for Landau damping given a temperature gradient. In contrast to their approximate closures where the vanishing viscosity coefficient numerically gives an exact response, our closures relate the heat flow and nonvanishing viscosity to temperature and flow velocity (gradients).

  13. Fast-Tracking Colostomy Closures.

    PubMed

    Nanavati, Aditya J; Prabhakar, Subramaniam

    2015-12-01

    There have been very few studies on applying fast-track principles to colostomy closures. We believe that outcome may be significantly improved with multimodal interventions in the peri-operative care of patients undergoing this procedure. A retrospective study was carried out comparing patients who had undergone colostomy closures by the fast-track and traditional care protocols at our centre. We intended to analyse peri-operative period and recovery in colostomy closures to confirm that fast-track surgery principles improved outcomes. Twenty-six patients in the fast-track arm and 24 patients in the traditional care arm had undergone colostomy closures. Both groups were comparable in terms of their baseline parameters. Patients in the fast-track group were ambulatory and accepted oral feeding earlier. There was a significant reduction in the duration of stay (4.73 ± 1.43 days vs. 7.21 ± 1.38 days, p = 0.0000). We did not observe a rise in complications or 30-day re-admissions. Fast-track surgery can safely be applied to colostomy closures. It shows earlier ambulation and reduction in length of hospital stay.

  14. Single-shell tank closure work plan. Revision A

    SciTech Connect

    1995-06-01

    In January 1994, the Hanford Federal Facility Agreement and Conset Order (Tri-Party Agreement) was amended to reflect a revised strategy for remediation of radioactive waste in underground storage tanks. These amendments include milestones for closure of the single-shell tank (SST) operable units, to be initiated by March 2012 and completed by September 2024. This SST-CWP has been prepared to address the principal topical areas identified in Tri-Party Agreement Milestone M-45-06 (i.e., regulatory pathway, operable unit characterization, waste retrieval, technology development, and a strategy for achieving closure). Chapter 2.0 of this SST-CWP provides a brief description of the environmental setting, SST System, the origin and characteristics of SST waste, and ancillary equipment that will be remediated as part of SST operable unit closure. Appendix 2A provides a description of the hydrogeology of the Hanford Site, including information on the unsaturated sediments (vadose zone) beneath the 200 Areas Plateau. Chapter 3.0 provides a discussion of the laws and regulations applicable to closure of the SST farm operable units. Chapter 4.0 provides a summary description of the ongoing characterization activities that best align with the proposed regulatory pathway for closure. Chapter 5.0 describes aspects of the SST waste retrieval program, including retrieval strategy, technology, and sequence, potential tank leakage during retrieval, and considerations of deployment of subsurface barriers. Chapter 6.0 outlines a proposed strategy for closure. Chapter 7.0 provides a summary of the programs underway or planned to develop technologies to support closure. Ca. 325 refs.

  15. Cabled butterfly closure: a novel technique for sternal closure.

    PubMed

    Jolly, Shashank; Flom, Beau; Dyke, Cornelius

    2012-10-01

    Impaired sternal wound healing remains problematic after median sternotomy and can lead to significant morbidity after cardiac surgical procedures. Although metal plating systems exist for closing the sternum, their use is limited by expense and practicality, and simple wire closure remains the most common technique to close the sternum. We describe a cabling technique for sternal closure that is secure, uses standard sternal wire, and may be used on every patient. We have used the technique routinely in 291 patients with no sternal dehiscence or wound healing problems.

  16. [Endoscopic vacuum-assisted closure].

    PubMed

    Wedemeyer, J; Lankisch, T

    2013-03-01

    Anastomotic leakage in the upper and lower intestinal tract is associated with high morbidity and mortality. Within the last 10 years endoscopic treatment options have been accepted as sufficient treatment option of these surgical complications. Endoscopic vacuum assisted closure (E-VAC) is a new innovative endoscopic therapeutic option in this field. E-VAC transfers the positive effects of vacuum assisted closure (VAC) on infected cutaneous wounds to infected cavities that can only be reached endoscopically. A sponge connected to a drainage tube is endoscopically placed in the leakage and a continuous vacuum is applied. Sponge and vacuum allow removal of infected fluids and promote granulation of the leakage. This results in clean wound grounds and finally allows wound closure. Meanwhile the method was also successfully used in the treatment of necrotic pancreatitis.

  17. Closure of Building 624 incinerator

    SciTech Connect

    Ridley, M.N.; Hallisey, M.L.; Terusaki, S.; Steverson, M.

    1992-06-01

    The Building 624 incinerator was a Resource Conservation Recovery Act (RCRA) mixed waste incinerator at Lawrence Livermore National Laboratory (LLNL). This incinerator was in operation from 1978 to 1989. The incinerator was to be closed as a mixed waste incinerator, but was to continue burning classified nonhazardous solid waste. The decision was later made to discontinue all use of the incinerator. Closure activities were performed from June 15 to December 15, 1991, when a clean closure was completed. The main part of the closure was the characterization, which included 393 samples and 30 blanks. From these 393 samples, approximately 13 samples indicated the need for further investigation, such as an isotopic scan; however, none of the samples was concluded to be hazardous or radioactive.

  18. Rash with DERMABOND PRINEO Skin Closure System Use in Bilateral Reduction Mammoplasty: A Case Series.

    PubMed

    Knackstedt, R W; Dixon, J A; O'Neill, P J; Herrera, F A

    2015-01-01

    Background. Bilateral reduction mammoplasty is a common plastic surgery procedure that can be complicated by unfavorable scar formation along incision sites. Surgical adhesives can be utilized as an alternative or as an adjunct to conventional suture closures to help achieve good wound tension and provide an adequate barrier with excellent cosmesis. The recently introduced DERMABOND PRINEO Skin Closure System Skin Closure System combines the skin adhesive 2-octyl cyanoacrylate with a self-adhering polyester-based mesh. Proposed benefits of wound closure with DERMABOND PRINEO Skin Closure System, used with or without sutures, include its watertight seal, easy removal, microbial barrier, even distribution of tension, and reduction in wound closure time. Although allergic reactions to 2-octyl cyanoacrylate have been reported, few allergic reactions to DERMABOND PRINEO Skin Closure System have been noted in the literature. This case series describes three patients who experienced an allergic reaction to DERMABOND PRINEO Skin Closure System after undergoing elective bilateral reduction mammoplasties at our institution to further explore this topic. Methods. Retrospective chart review of bilateral reduction mammoplasty patients who received DERMABOND PRINEO Skin Closure System dressing at our institution was performed. Results. Three patients were identified as having a rash in reaction to DERMABOND PRINEO Skin Closure System after bilateral reduction mammoplasty. All three patients required systemic steroid treatment to resolve the rash. One patient was identified as having a prior adhesive reaction. Conclusions. DERMABOND PRINEO Skin Closure System has demonstrated its efficacy in optimizing scar healing and appearance. However, as we demonstrate these three allergic reactions to DERMABOND PRINEO Skin Closure System, caution must be utilized in its usage, namely, in patients with a prior adhesive allergy and in sites where moisture or friction may be apparent.

  19. Rash with DERMABOND PRINEO Skin Closure System Use in Bilateral Reduction Mammoplasty: A Case Series

    PubMed Central

    Knackstedt, R. W.; Dixon, J. A.; O'Neill, P. J.; Herrera, F. A.

    2015-01-01

    Background. Bilateral reduction mammoplasty is a common plastic surgery procedure that can be complicated by unfavorable scar formation along incision sites. Surgical adhesives can be utilized as an alternative or as an adjunct to conventional suture closures to help achieve good wound tension and provide an adequate barrier with excellent cosmesis. The recently introduced DERMABOND PRINEO Skin Closure System Skin Closure System combines the skin adhesive 2-octyl cyanoacrylate with a self-adhering polyester-based mesh. Proposed benefits of wound closure with DERMABOND PRINEO Skin Closure System, used with or without sutures, include its watertight seal, easy removal, microbial barrier, even distribution of tension, and reduction in wound closure time. Although allergic reactions to 2-octyl cyanoacrylate have been reported, few allergic reactions to DERMABOND PRINEO Skin Closure System have been noted in the literature. This case series describes three patients who experienced an allergic reaction to DERMABOND PRINEO Skin Closure System after undergoing elective bilateral reduction mammoplasties at our institution to further explore this topic. Methods. Retrospective chart review of bilateral reduction mammoplasty patients who received DERMABOND PRINEO Skin Closure System dressing at our institution was performed. Results. Three patients were identified as having a rash in reaction to DERMABOND PRINEO Skin Closure System after bilateral reduction mammoplasty. All three patients required systemic steroid treatment to resolve the rash. One patient was identified as having a prior adhesive reaction. Conclusions. DERMABOND PRINEO Skin Closure System has demonstrated its efficacy in optimizing scar healing and appearance. However, as we demonstrate these three allergic reactions to DERMABOND PRINEO Skin Closure System, caution must be utilized in its usage, namely, in patients with a prior adhesive allergy and in sites where moisture or friction may be apparent. PMID

  20. Alarm sensor apparatus for closures

    DOEpatents

    Carlson, J.A.; Stoddard, L.M.

    1984-01-31

    An alarm sensor apparatus for closures such as doors and windows, and particularly for closures having loose tolerances such as overhead doors, garage doors or the like, the sensor apparatus comprising a pair of cooperating bracket members, one being attached to the door facing or framework and the other to the door member, two magnetic sensor elements carried by said bracket members, the bracket members comprising a pair of cooperating orthogonal guide slots and plates and a stop member engageable with one of the sensors for aligning the sensors with respect to each other in all three orthogonal planes when the door is closed.

  1. Closure phase and lucky imaging.

    PubMed

    Rhodes, William T

    2009-01-01

    Since its introduction by Jennison in 1958, the closure-phase method for removing the effects of electrical path-length errors in radio astronomy and of atmospheric turbulence in optical astronomy has been based on the non-redundant-spacing triple interferometer. It is shown that through application of lucky imaging concepts it is possible to relax this condition, making closure-phase methods possible with redundantly spaced interferometer configurations and thereby widening their range of application. In particular, a quadruple-interferometer can, under lucky imaging conditions, be treated as though it were a triple interferometer. The slit-annulus aperture is investigated as a special case.

  2. Alarm sensor apparatus for closures

    DOEpatents

    Carlson, James A.; Stoddard, Lawrence M.

    1986-01-01

    An alarm sensor apparatus for closures such as doors and windows, and particularly for closures having loose tolerances such as overhead doors, garage doors or the like, the sensor apparatus comprising a pair of cooperating bracket members, one being attached to the door facing or frame work and the other to the door member, two magnetic sensor elements carried by said bracket members, the bracket members comprising a pair of cooperating orthogonal guide slots and plates and a stop member engageable with one of the sensors for aligning the sensors with respect to each other in all three orthogonal planes when the door is closed.

  3. 40 CFR 265.113 - Closure; time allowed for closure.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... section, at a hazardous waste management unit or facility, or within 90 days after approval of the closure...) The hazardous waste management unit or facility has the capacity to receive additional hazardous... another person will recommence operation of the hazardous waste management unit or the facility within...

  4. 40 CFR 265.113 - Closure; time allowed for closure.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... section, at a hazardous waste management unit or facility, or within 90 days after approval of the closure...) The hazardous waste management unit or facility has the capacity to receive additional hazardous... another person will recommence operation of the hazardous waste management unit or the facility within...

  5. Permanent-Magnet Meissner Bearing

    NASA Technical Reports Server (NTRS)

    Robertson, Glen A.

    1994-01-01

    Permanent-magnet meissner bearing features inherently stable, self-centering conical configuration. Bearing made stiffer or less stiff by selection of magnets, springs, and spring adjustments. Cylindrical permanent magnets with axial magnetization stacked coaxially on rotor with alternating polarity. Typically, rare-earth magnets used. Magnets machined and fitted together to form conical outer surface.

  6. DNAPL Remediation: Selected Projects Approaching Regulatory Closure

    EPA Pesticide Factsheets

    This paper is a status update on the use of DNAPL source reduction remedial technologies, and provides information about recent projects where regulatory closure has been reached or projects are approaching regulatory closure, following source reduction.

  7. Vascular Closure Devices in Interventional Radiology Practice

    SciTech Connect

    Patel, Rafiuddin; Muller-Hulsbeck, Stefan; Uberoi, Raman

    2015-08-15

    Manual compression (MC) is a well-established technique for haemostasis following percutaneous arterial intervention. However, MC is labour and time intensive with potential limitations, particularly for patients who are coagulopathic, unable to comply with bed rest or obese and when large sheaths or anti-coagulants are used. There are a variety of vascular closure devices (VCDs) available to overcome these limitations. This review gives an overview of current VCDs, their mechanism of action, individual strengths and weaknesses, evidence base and utility in interventional radiology (IR) practice. The majority of the published evidence on VCDs is derived from patients undergoing cardiac interventions, which should be borne in mind when considering the applicability and transfer of this data for general IR practice. Overall, the evidence suggests that most VCDs are effective in achieving haemostasis with a similar rate of complications to MC although the complication profile associated with VCDs is distinct to that of MC. There is insufficient evidence to comparatively analyse the different types of VCDs currently available or reliably judge their cost-effectiveness. The interventional radiologist should have a thorough understanding of the available techniques for haemostasis and be able to identify and utilise the most appropriate strategy and closure technique for the individual patient.

  8. CIRSE Vascular Closure Device Registry

    SciTech Connect

    Reekers, Jim A.; Mueller-Huelsbeck, Stefan; Libicher, Martin; Atar, Eli; Trentmann, Jens; Goffette, Pierre; Borggrefe, Jan; Zelenak, Kamil; Hooijboer, Pieter; Belli, Anna-Maria

    2011-02-15

    Purpose: Vascular closure devices are routinely used after many vascular interventional radiology procedures. However, there have been no major multicenter studies to assess the safety and effectiveness of the routine use of closure devices in interventional radiology. Methods: The CIRSE registry of closure devices with an anchor and a plug started in January 2009 and ended in August 2009. A total of 1,107 patients were included in the registry. Results: Deployment success was 97.2%. Deployment failure specified to access type was 8.8% [95% confidence interval (95% CI) 5.0-14.5] for antegrade access and 1.8% (95% CI 1.1-2.9) for retrograde access (P = 0.001). There was no difference in deployment failure related to local PVD at the access site. Calcification was a reason for deployment failure in only <0.5% of patients. Postdeployment bleeding occurred in 6.4%, and most these (51.5%) could be managed with light manual compression. During follow-up, other device-related complications were reported in 1.3%: seven false aneurysms, three hematoma >5.9 cm, and two vessel occlusions. Conclusion: The conclusion of this registry of closure devices with an anchor and a plug is that the use of this device in interventional radiology procedures is safe, with a low incidence of serious access site complications. There seems to be no difference in complications between antegrade and retrograde access and other parameters.

  9. EVALUATION OF TROQUE VS CLOSURE BOLT PRELOAD FOR A TYPICAL CONTAINMENT VESSEL UNDER SERVICE CONDITIONS

    SciTech Connect

    Smith, A.

    2010-02-16

    Radioactive material package containment vessels typically employ bolted closures of various configurations. Closure bolts must retain the lid of a package and must maintain required seal loads, while subjected to internal pressure, impact loads and vibration. The need for insuring that the specified preload is achieved in closure bolts for radioactive materials packagings has been a continual subject of concern for both designers and regulatory reviewers. The extensive literature on threaded fasteners provides sound guidance on design and torque specification for closure bolts. The literature also shows the uncertainty associated with use of torque to establish preload is typically between 10 and 35%. These studies have been performed under controlled, laboratory conditions. The ability to insure required preload in normal service is, consequently, an important question. The study described here investigated the relationship between indicated torque and resulting bolt load for a typical radioactive materials package closure using methods available under normal service conditions.

  10. Effects of cumulus parameterization closures on simulations of summer precipitation over the continental United States

    NASA Astrophysics Data System (ADS)

    Qiao, Fengxue; Liang, Xin-Zhong

    2016-09-01

    This study examines the effects of five cumulus closure assumptions on simulations of summer precipitation in the continental U.S. by utilizing an ensemble cumulus parameterization (ECP) that incorporates multiple alternate closure schemes into a single cloud model formulation. Results demonstrate that closure algorithms significantly affect the summer mean, daily frequency and intensity, and diurnal variation of precipitation, with strong regional dependence. Overall, the vertical velocity (W) closure produces the smallest summer mean biases, while the moisture convergence (MC) closure most realistically reproduces daily variability. Both closures have advantages over others in simulating U.S. daily rainfall frequency distribution, though both slightly overestimate intense rain events. The MC closure is superior at capturing summer rainfall amount, daily variability, and heavy rainfall frequency over the Central U.S., but systematically produces wet biases over the North American Monsoon (NAM) region and Southeast U.S., which can be reduced by using the W closure. The instability tendency (TD) and the total instability adjustment (KF) closures are better at capturing observed diurnal signals over the Central U.S. and the NAM, respectively. The results reasonably explain the systematic behaviors of several major cumulus parameterizations. A preliminary experiment combining two optimal closures (averaged moisture convergence and vertical velocity) in the ECP scheme significantly reduced the wet (dry) biases over the Southeast U.S. in the summer of 1993 (2003), and greatly improved daily rainfall correlations over the NAM. Further improved model simulation skills may be achieved in the future if optimal closures and their appropriate weights can be derived at different time scales based on specific climate regimes.

  11. 40 CFR 258.61 - Post-closure care requirements.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 40 Protection of Environment 24 2010-07-01 2010-07-01 false Post-closure care requirements. 258.61... FOR MUNICIPAL SOLID WASTE LANDFILLS Closure and Post-Closure Care § 258.61 Post-closure care requirements. (a) Following closure of each MSWLF unit, the owner or operator must conduct post-closure...

  12. 40 CFR 265.112 - Closure plan; amendment of plan.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 40 Protection of Environment 25 2010-07-01 2010-07-01 false Closure plan; amendment of plan. 265... DISPOSAL FACILITIES Closure and Post-Closure § 265.112 Closure plan; amendment of plan. (a) Written plan... have a written closure plan. Until final closure is completed and certified in accordance with §...

  13. 40 CFR 265.112 - Closure plan; amendment of plan.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 40 Protection of Environment 27 2012-07-01 2012-07-01 false Closure plan; amendment of plan. 265... DISPOSAL FACILITIES Closure and Post-Closure § 265.112 Closure plan; amendment of plan. (a) Written plan... have a written closure plan. Until final closure is completed and certified in accordance with §...

  14. 40 CFR 265.112 - Closure plan; amendment of plan.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 40 Protection of Environment 26 2014-07-01 2014-07-01 false Closure plan; amendment of plan. 265... DISPOSAL FACILITIES Closure and Post-Closure § 265.112 Closure plan; amendment of plan. (a) Written plan... have a written closure plan. Until final closure is completed and certified in accordance with §...

  15. Transitive closure on the imagine stream processor

    SciTech Connect

    Griem, Gorden; Oliker, Leonid

    2003-11-11

    The increasing gap between processor and memory speeds is a well-known problem in modern computer architecture. The Imagine system is designed to address the processor-memory gap through streaming technology. Stream processors are best-suited for computationally intensive applications characterized by high data parallelism and producer-consumer locality with minimal data dependencies. This work examines an efficient streaming implementation of the computationally intensive Transitive Closure (TC) algorithm on the Imagine platform. We develop a tiled TC algorithm specifically for the Imagine environment, which efficiently reuses streams to minimize expensive off-chip data transfers. The implementation requires complex stream programming since the memory hierarchy and cluster organization of the underlying architecture are exposed to the Imagine programmer. Results demonstrate that limited performance of TC is achieved primarily due to the complicated data-dependencies of the blocked algorithm. This work is an ongoing effort to identify classes of scientific problems well-suited for streaming processors.

  16. Periodic permanent magnet focused klystron

    DOEpatents

    Ferguson, Patrick; Read, Michael; Ives, R Lawrence

    2015-04-21

    A periodic permanent magnet (PPM) klystron has beam transport structures and RF cavity structures, each of which has permanent magnets placed substantially equidistant from a beam tunnel formed about the central axis, and which are also outside the extent of a cooling chamber. The RF cavity sections also have permanent magnets which are placed substantially equidistant from the beam tunnel, but which include an RF cavity coupling to the beam tunnel for enhancement of RF carried by an electron beam in the beam tunnel.

  17. On consistent boundary closures for compact finite-difference WENO schemes

    NASA Astrophysics Data System (ADS)

    Brehm, C.

    2017-04-01

    The accuracy of compact finite-difference schemes can be degraded by inconsistent domain or box boundary treatments. A consistent higher-order boundary closure is especially important for block-structured Cartesian AMR solvers, where the computational domain is generally decomposed into a large number of boxes containing a relatively small number of grid points. At each box boundary, a consistent higher-order boundary closure needs to be applied to avoid a reduction of the formal order-of-accuracy of the numerical scheme. This paper presents such a boundary closure for the fifth-order accurate compact finite-difference WENO scheme by Ghosh and Baeder [1]. The accuracy of the new boundary closure is validated by employing the method of manufactured solutions. A comparison of the new compact boundary closure with the original explicit boundary closure demonstrates the improved accuracy for the new compact boundary closure, while the behavior of the scheme across discontinuities appears unaffected. The linear stability analysis results indicate that a linearly stable compact WENO boundary closure is achieved.

  18. Revascularization of an immature permanent tooth with periradicular abscess after luxation.

    PubMed

    Iwaya, Shin-ichi; Ikawa, Motohide; Kubota, Minoru

    2011-02-01

    An immature permanent mandibular central incisor with periapical involvement in a 7-year-old boy was treated to promote revascularization. The tooth suffered from acute apical periodontitis after periodontal treatment by a general practitioner. An access cavity was prepared in the tooth and the cavity was left open until the next visit to achieve drainage through the canal. The root canal was not mechanically cleaned during the treatment period, but was irrigated with hydrogen peroxide and sodium hypochlorite. Calcium hydroxide compound was used for disinfection. At the fifth visit vital tissue appeared in the canal near the apical region, and calcium hydroxide compound was placed in contact with the soft tissue in the root canal. The access cavity was sealed with glass-ionomer cement followed by an adhesive composite resin filling. Radiographic examination 30 months after the initial treatment confirmed closure of the apex and thickening of the root wall. The case was observed for up to 13 years and root development was confirmed.

  19. Biosphere 2: a prototype project for a permanent and evolving life system for Mars base.

    PubMed

    Nelson, M; Allen, J P; Dempster, W F

    1992-01-01

    As part of the ground-based preparation for creating long-term life systems needed for space habitation and settlement, Space Biospheres Ventures (SBV) is undertaking the Biosphere 2 project near Oracle, Arizona. Biosphere 2, currently under construction, is scheduled to commence its operations in 1991 with a two-year closure period with a crew of eight people. Biosphere 2 is a facility which will be essentialy materially-closed to exchange with the outside environment. It is open to information and energy flow. Biosphere 2 is designed to achieve a complex life-support system by the integration of seven areas or "biomes"--rainforest, savannah, desert, marsh, ocean, intensive agriculture and human habitat. Unique bioregenerative technologies, such as soil bed reactors for air purification, aquatic waste processing systems, real-time analytic systems and complex computer monitoring and control systems are being developed for the Biosphere 2 project. Its operation should afford valuable insight into the functioning of complex life systems necessary for long-term habitation in space. It will serve as an experimental ground-based prototype and testbed for the stable, permanent life systems needed for human exploration of Mars.

  20. Biosphere 2: A prototype project for a permanent and evolving life system for Mars base

    NASA Astrophysics Data System (ADS)

    Nelson, Mark; Allen, John P.; Dempster, William F.

    As part of the ground-based preparation for creating long-term life systems needed for space habitation and settlement, Space Biopsheres Ventures (SBV) is undertaking the Biosphere 2 project near Oracle, Arizona. Biosphere 2, currently under construction, is scheduled to commence its operations in 1991 with a two-year closure period with a crew of eight people. Biosphere 2 is a facility which will be essentially materially-closed to exchange with the outside environment. It is open to information and energy flow. Biosphere 2 is designed to achieve a complex life-support system by the integration of seven areas or ``biomes'' - rainforest, savannah, desert, marsh, ocean, intensive agriculture and human habitat. Unique bioregenerative technologies, such as soil bed reactors for air purification, aquatic waste processing systems, real-time analytic systems and complex computer monitoring and control systems are being developed for the Biosphere 2 project. Its operation should afford valuable insight into the functioning of complex life systems necessary for long-term habitation in space. It will serve as an experimental ground-based prototype and testbed for the stable, permanent life systems needed for human exploration of Mars.

  1. Generalized Convective Quasi-Equilibrium Closure

    NASA Astrophysics Data System (ADS)

    Yano, Jun-Ichi; Plant, Robert

    2016-04-01

    Arakawa and Schubert proposed convective quasi-equilibrium as a basic principle for closing their spectrum mass-flux convection parameterization. In deriving this principle, they show that the cloud work function is a key variable that controls the growth of convection. Thus, this closure hypothesis imposes a steadiness of the cloud work function tendency. This presentation shows how this principle can be generalized so that it can also encompasses both the CAPE and the moisture-convergence closures. Note that the majority of the current mass-flux convection parameterization invokes a CAPE closure, whereas the moisture-convergence closure was extremely popular historically. This generalization, in turn, includes both closures as special cases of convective quasi-equilibrium. This generalization further suggests wide range of alternative possibilities for convective closure. In general, a vertical integral of any function depending on both large-scale and convective-scale variables can be adopted as an alternative closure variables, leading to an analogous formulation as Arakawa and Schubert's convective quasi-equilibrium formulation. Among those, probably the most fascinating possibility is to take a vertical integral of the convective-scale moisture for the closure. Use of a convective-scale variable for closure has a particular appeal by not suffering from a loss of predictability of any large-scale variables. That is a main problem with any of the current convective closures, not only for the moisture-convergence based closure as often asserted.

  2. Sampling and monitoring for closure

    USGS Publications Warehouse

    McLemore, V.T.; Russell, C.C.; Smith, K.S.

    2004-01-01

    The Metals Mining Sector of the Acid Drainage Technology Initiative (ADTI-MMS) addresses technical drainage-quality issues related to metal mining and related metallurgical operations, for future and active mines, as well as, for historical mines and mining districts. One of the first projects of ADTI-MMS is to develop a handbook describing the best sampling, monitoring, predicting, mitigating, and modeling of drainage from metal mines, pit lakes and related metallurgical facilities based upon current scientific and engineering practices. One of the important aspects of planning a new mine in today's regulatory environment is the philosophy of designing a new or existing mine or expansion of operations for ultimate closure. The holistic philosophy taken in the ADTI-MMS handbook maintains that sampling and monitoring programs should be designed to take into account all aspects of the mine-life cycle. Data required for the closure of the operation are obtained throughout the mine-life cycle, from exploration through post-closure.

  3. Boundary Closures for Fourth-order Energy Stable Weighted Essentially Non-Oscillatory Finite Difference Schemes

    NASA Technical Reports Server (NTRS)

    Fisher, Travis C.; Carpenter, Mark H.; Yamaleev, Nail K.; Frankel, Steven H.

    2009-01-01

    A general strategy exists for constructing Energy Stable Weighted Essentially Non Oscillatory (ESWENO) finite difference schemes up to eighth-order on periodic domains. These ESWENO schemes satisfy an energy norm stability proof for both continuous and discontinuous solutions of systems of linear hyperbolic equations. Herein, boundary closures are developed for the fourth-order ESWENO scheme that maintain wherever possible the WENO stencil biasing properties, while satisfying the summation-by-parts (SBP) operator convention, thereby ensuring stability in an L2 norm. Second-order, and third-order boundary closures are developed that achieve stability in diagonal and block norms, respectively. The global accuracy for the second-order closures is three, and for the third-order closures is four. A novel set of non-uniform flux interpolation points is necessary near the boundaries to simultaneously achieve 1) accuracy, 2) the SBP convention, and 3) WENO stencil biasing mechanics.

  4. Cataract surgery and methods of wound closure: a review

    PubMed Central

    Matossian, Cynthia; Makari, Sarah; Potvin, Richard

    2015-01-01

    Clear corneal incisions are routinely used in cataract surgery, but watertight wound closure may not always be achieved, which can increase the risk for anterior chamber fluid egress or ocular surface fluid ingress. A new US Food and Drug Administration-approved ocular sealant appears to have good efficacy in sealing clear corneal incisions; its use may be indicated when wound integrity is in question. PMID:26045656

  5. Stress-relaxation and tension relief system for immediate primary closure of large and huge soft tissue defects: an old-new concept: new concept for direct closure of large defects.

    PubMed

    Topaz, Moris; Carmel, Narin Nard; Topaz, Guy; Li, Mingsen; Li, Yong Zhong

    2014-12-01

    Stress-relaxation is a well-established mechanism for laboratory skin stretching, with limited clinical application in conventional suturing techniques due to the inherent, concomitant induction of ischemia, necrosis and subsequent suture failure. Skin defects that cannot be primarily closed are a common difficulty during reconstructive surgery. The TopClosure tension-relief system (TRS) is a novel device for wound closure closure, providing secured attachment to the skin through a wide area of attachment, in an adjustable manner, enabling primary closure of medium to large skin defects. The aim of this study was to evaluate the efficiency of the TopClosure TRS as a substitute for skin grafting and flaps for primary closure of large soft tissue defects by stress-relaxation. We present three demonstrative cases requiring resection of large to huge tumors customarily requiring closure by skin graft or flaps. TRS was applied during surgery serving as a tension-relief platform for tension sutures, to enable primary skin-defect closure by cycling of stress-relaxation, and following surgery as skin-secure system until complete wound closure. All skin defects ranging from 7 to 26 cm in width were manipulated by the TRS through stress-relaxation, without undermining of skin, enabling primary skin closure and eliminating the need for skin grafts and flaps. Immediate wound closure ranged 26 to 135 min. TRS was applied for 3 to 4 weeks. Complications were minimal and donor site morbidity was eliminated. Surgical time, hospital stay and costs were reduced and wound aesthetics were improved. In this case series we present a novel technology that enables the utilization of the viscoelastic properties of the skin to an extreme level, extending the limits of primary wound closure by the stress-relaxation principle. This is achieved via a simple device application that may aid immediate primary wound closure and downgrade the complexity of surgical procedures for a wide range

  6. Request for closure, underground storage tank 2130-U: Oak Ridge Y-12 Plant, Oak Ridge, Tennessee, Facility ID {number_sign}0-010117

    SciTech Connect

    Not Available

    1993-12-01

    This document presents a summary of the activities and analytical data related to the removal of underground storage tank (UST) 2130-U, previously located at the Oak Ridge Y-12 Plant. Removal of this tank was conducted in accordance with Tennessee Department of Environment and Conservation (TDEC) regulation 1200-1-15 (1992). A completed copy of the State of Tennessee, Division of Underground Storage Tanks, Permanent Closure Report Form is included as Appendix A of this document Based on the information and data presented herein, the Oak Ridge Y-12 Plant requests permanent closure for the tank 2130-U site.

  7. Preparing a base realignment and closure cleanup plan

    SciTech Connect

    Diecidue, A.M.; Bandrowsky, M.; Wooldridge, P.

    1994-12-31

    Every Department of Defense (DoD) installation subject to closure or realignment is evaluating and implementing strategies for environmental response actions to facilitate the transfer of real property at the installation. The closure and realignment process is conducted pursuant to the Base Closure and Realignment Act of 1988 (Public Law 100-526, 102 Stat. 2623) (BRAC 88) or the Defense Base Closure and Realignment Act of 1990 (Public Law 101-510, 104 Stat. 1808) (BRAC 91, 93, and 95). On July 2, 1993, the President announced a five-part program to speed the economic recovery of communities where military bases are slated to close. DoD subsequently issued a policy memorandum on September 9, 1993 that provides guidance on implementing ``fast-track`` cleanup initiatives at those bases. The guidance introduces the use of BRAC cleanup teams (BCT) and the development of BRAC cleanup plans (BCP) as part of fast-track cleanup. The BCT is responsible for developing the BCP. The BCP serves as the road map for expeditious cleanup. This paper will focus on two areas: forming and working with the BCT and preparing the BCP. The paper will discuss the make-up of the BCT and how to build trust and achieve early consensus on the many issues to be addressed by the BCT. The paper also will discuss tips for forming the BCT and preparing the BCP based on the authors` experiences.

  8. Modeling closure of circular wounds through coordinated collective motion

    NASA Astrophysics Data System (ADS)

    Li, David S.; Zimmermann, Juliane; Levine, Herbert

    2016-02-01

    Wound healing enables tissues to restore their original states, and is achieved through collective cell migration into the wound space, contraction of the wound edge via an actomyosin filament ‘purse-string,’ as well as cell division. Recently, experimental techniques have been developed to create wounds with various regular morphologies in epithelial monolayers, and these experiments of circular closed-contour wounds support coordinated lamellipodial cell crawling as the predominant driver of gap closure. Through utilizing a particle-based mechanical tissue simulation, exhibiting long-range coordination of cell motility, we computationally model these closed-contour experiments with a high level of agreement between experimentally observed and simulated wound closure dynamics and tissue velocity profiles. We also determine the sensitivity of wound closure time in the model to changes in cell motility force and division rate. Our simulation results confirm that circular wounds can close due to collective cell migration without the necessity for a purse-string mechanism or for cell division, and show that the alignment mechanism of cellular motility force with velocity, leading to collective motion in the model, may speed up wound closure.

  9. Idaho HWMA/RCRA Closure Plan for Idaho Nuclear Technology and Engineering Center Tanks WM-182 and WM-183 - Rev. 2

    SciTech Connect

    Evans, Susan Kay; unknown

    2000-12-01

    This document presents the plan for the closure of the Idaho Nuclear Technology and Engineering Center Tank Farm Facility tanks WM-182 and WM-183 in accordance with Idaho Hazardous Waste Management Act/Resource Conservation and Recovery Act interim status closure requirements. Closure of these two tanks is the first in a series of closures leading to the final closure of the eleven 300,000-gal tanks in the Tank Farm Facility. As such, closure of tanks WM-182 and WM-183 will serve as a proof-of-process demonstration of the waste removal, decontamination, and sampling techniques for the closure of the remaining Tank Farm Facility tanks. Such an approach is required because of the complexity and uniqueness of the Tank Farm Facility closure. This plan describes the closure units, objectives, and compliance strategy as well as the operational history and current status of the tanks. Decontamination, closure activities, and sampling and analysis will be performed with the goal of achieving clean closure of the tanks. Coordination with other regulatory requirements, such as U.S. Department of Energy closure requirements, is also discussed.

  10. Facility Closure Report for T-Tunnel (U12t), Area 12, Nevada Test Site, Nevada

    SciTech Connect

    NSTec Environmental Restoration

    2008-08-01

    This Facility Closure Report (FCR) has been prepared to document the actions taken to permanently close the remaining accessible areas of U12t-Tunnel (T-Tunnel) in Area 12 of the Nevada Test Site (NTS). The closure of T-Tunnel was a prerequisite to transfer facility ownership from the Defense Threat Reduction Agency (DTRA) to the U.S. Department of Energy, National Nuclear Security Administration Nevada Site Office (NNSA/NSO). Closure of the facility was accomplished with the cooperation and concurrence of both NNSA/NSO and the Nevada Division of Environmental Protection (NDEP). The purpose of this FCR is to document that the closure of T-Tunnel complied with the closure requirements specified in the Facility Closure Plan for N- and T-Tunnels Area 12, Nevada Test Site (Appendix D) and that the facility is ready for transfer to NNSA/NSO. The Facility Closure Plan (FCP) is provided in Appendix D. T-Tunnel is located approximately 42 miles north of Mercury in Area 12 of the NTS (Figure 1). Between 1970 and 1987, T-Tunnel was used for six Nuclear Weapons Effects Tests (NWETs). The tunnel was excavated horizontally into the volcanic tuffs of Rainier Mesa. The T-Tunnel complex consists of a main access drift with two NWET containment structures, a Gas Seal Plug (GSP), and a Gas Seal Door (GSD) (Figure 2). The T-Tunnel complex was mothballed in 1993 to preserve the tunnel for resumption of testing, should it happen in the future, to stop the discharge of tunnel effluent, and to prevent unauthorized access. This was accomplished by sealing the main drift GSD.

  11. Clamshell closure for metal drum

    SciTech Connect

    Blanton, Paul S

    2014-09-30

    Closure ring to retain a lid in contact with a metal drum in central C-section conforming to the contact area between a lid and the rim of a drum and further having a radially inwardly directed flange and a vertically downwardly directed flange attached to the opposite ends of the C-section. The additional flanges reinforce the top of the drum by reducing deformation when the drum is dropped and maintain the lid in contact with the drum. The invention is particularly valuable in transportation and storage of fissile material.

  12. Closure constraints for hyperbolic tetrahedra

    NASA Astrophysics Data System (ADS)

    Charles, Christoph; Livine, Etera R.

    2015-07-01

    We investigate the generalization of loop gravity's twisted geometries to a q-deformed gauge group. In the standard undeformed case, loop gravity is a formulation of general relativity as a diffeomorphism-invariant SU(2) gauge theory. Its classical states are graphs provided with algebraic data. In particular, closure constraints at every node of the graph ensure their interpretation as twisted geometries. Dual to each node, one has a polyhedron embedded in flat space {{{R}}3}. One then glues them, allowing for both curvature and torsion. It was recently conjectured that q-deforming the gauge group SU(2) would allow us to account for a non-vanishing cosmological constant Λ \

  13. A study of crack closure in fatigue

    NASA Technical Reports Server (NTRS)

    Shih, T. T.; Wei, R. P.

    1973-01-01

    Crack closure phenomenon in fatigue was studied by using a Ti-6Al-4V titanium alloy. The occurrence of crack closure was directly measured by an electrical-potential method, and indirectly by load-strain measurement. The experimental results showed that the onset of crack closure depends on both the stress ratio, and the maximum stress intensity factor. No crack closure was observed for stress ratio, greater than 0.3 in this alloy. A two-dimensional elastic model was used to explain the behavior of the recorded load-strain curves. Closure force was estimated by using this model. Yield level stress was found near the crack tip. Based on this estimated closure force, the crack opening displacement was calculated. This result showed that onset of crack closure detected by electrical-potential measurement and crack-opening-displacement measurement is the same. The implications of crack closure on fatigue crack are considered. The experimental results show that crack closure cannot fully account for the effect of stress ratio, on crack growth, and that it cannot be regarded as the sole cause for delay.

  14. 100-D Ponds closure plan. Revision 1

    SciTech Connect

    Petersen, S.W.

    1997-09-01

    The 100-D Ponds is a Treatment, Storage, and Disposal (TSD) unit on the Hanford Facility that received both dangerous and nonregulated waste. This Closure Plan (Rev. 1) for the 100-D Ponds TSD unit consists of a RCRA Part A Dangerous Waste Permit Application (Rev. 3), a RCRA Closure Plan, and supporting information contained in the appendices to the plan. The closure plan consists of eight chapters containing facility description, process information, waste characteristics, and groundwater monitoring data. There are also chapters containing the closure strategy and performance standards. The strategy for the closure of the 100-D Ponds TSD unit is clean closure. Appendices A and B of the closure plan demonstrate that soil and groundwater beneath 100-D Ponds are below cleanup limits. All dangerous wastes or dangerous waste constituents or residues associated with the operation of the ponds have been removed, therefore, human health and the environment are protected. Discharges to the 100-D Ponds, which are located in the 100-DR-1 operable unit, were discontinued in June 1994. Contaminated sediment was removed from the ponds in August 1996. Subsequent sampling and analysis demonstrated that there is no contamination remaining in the ponds, therefore, this closure plan is a demonstration of clean closure.

  15. Lodestone: Nature's own permanent magnet

    NASA Technical Reports Server (NTRS)

    Wasilewski, P.

    1976-01-01

    Magnetic hysteresis and microstructural details are presented which explain why the class of magnetic iron ores defined as proto-lodestones, can behave as permanent magnets, i.e. lodestones. Certain of these proto-lodestones which are not permanent magnets can be made into permanent magnets by charging in a field greater than 1000 oersted. This fact, other experimental observations, and field evidence from antiquity and the middle ages, which seems to indicate that lodestones are found as localized patches within massive ore bodies, suggests that lightning might be responsible for the charging of lodestones. The large remanent magnetization, high values of coercive force, and good time stability for the remanent magnetization are all characteristics of proto-lodestone iron ores which behave magnetically as fine scale ( 10 micrometer) intergrowths when subjected to magnetic hysteresis analysis. The magnetic results are easily understood by analysis of the complex proto lodestone microstructural patterns observable at the micrometer scale and less.

  16. 40 CFR 264.112 - Closure plan; amendment of plan.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 40 Protection of Environment 25 2010-07-01 2010-07-01 false Closure plan; amendment of plan. 264... Closure and Post-Closure § 264.112 Closure plan; amendment of plan. (a) Written plan. (1) The owner or operator of a hazardous waste management facility must have a written closure plan. In addition,...

  17. 40 CFR 264.112 - Closure plan; amendment of plan.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 40 Protection of Environment 27 2012-07-01 2012-07-01 false Closure plan; amendment of plan. 264... Closure and Post-Closure § 264.112 Closure plan; amendment of plan. (a) Written plan. (1) The owner or operator of a hazardous waste management facility must have a written closure plan. In addition,...

  18. 40 CFR 264.112 - Closure plan; amendment of plan.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 40 Protection of Environment 26 2014-07-01 2014-07-01 false Closure plan; amendment of plan. 264... Closure and Post-Closure § 264.112 Closure plan; amendment of plan. (a) Written plan. (1) The owner or operator of a hazardous waste management facility must have a written closure plan. In addition,...

  19. Postretention stability after orthodontic closure of maxillary interincisor diastemas

    PubMed Central

    de MORAIS, Juliana Fernandes; de FREITAS, Marcos Roberto; de FREITAS, Karina Maria Salvatore; JANSON, Guilherme; CASTELLO BRANCO, Nuria

    2014-01-01

    Anterior spaces may interfere with smile attractiveness and compromise dentofacial harmony. They are among the most frequent reasons why patients seek orthodontic treatment. However, midline diastema is commonly cited as a malocclusion with high relapse incidence by orthodontists. Objectives This study aimed to evaluate the stability of maxillary interincisor diastemas closure and the association of their relapse and interincisor width, overjet, overbite and root parallelism. Material and Methods Sample comprised 30 patients with at least a pretreatment midline diastema of 0.5 mm or greater after eruption of the maxillary permanent canines. Dental casts and panoramic radiographs were taken at pretreatment, posttreatment and postretention. Results Before treatment, midline diastema width was 1.52 mm (SD=0.88) and right and left lateral diastema widths were 0.55 mm (SD=0.56) and 0.57 mm (SD=0.53), respectively. According to repeated measures analysis of variance, only midline diastema demonstrated significant relapse. In the overall sample the average relapse of midline diastema was 0.49 mm (SD=0.66), whilst the unstable patients showed a mean space reopening of 0.78 mm (SD=0.66). Diastema closure in the area between central and lateral incisors showed great stability. Multivariate correlation tests showed that only initial diastema width (β=0.60) and relapse of overjet (β=0.39) presented association with relapse of midline diastema. Conclusions Midline diastema relapse was statistically significant and occurred in 60% of the sample, while lateral diastemas closure remained stable after treatment. Only initial diastema width and overjet relapse showed association with relapse of midline diastema. There was no association between relapse of interincisor diastema and root parallelism. PMID:24918661

  20. Identification of Selected Child-Resistant Closures (Continuous Thread, Lug-Bayonet, and Snap Closures).

    ERIC Educational Resources Information Center

    Gross, Rosalind L.; White, Harry E.

    This publication describes a selected group of child-resistant closures used in packaging five categories of medicine and household products. The material in the document was collected to train survey personnel to identify closures for a planned household study of the effectiveness of child-resistant packaging. The 39 closures described are of…

  1. 40 CFR 265.1202 - Closure and post-closure care.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... post-closure care. (a) At closure of a magazine or unit which stored hazardous waste under this subpart... estimates for closure, and financial responsibility for magazines or units must meet all of the requirements... as long as it remains in service as a munitions or explosives magazine or storage unit. (b) If,...

  2. Open abdomen treatment for septic patients with gastrointestinal fistula: from fistula control to definitive closure.

    PubMed

    Ren, Jianan; Yuan, Yujie; Zhao, Yunzhao; Gu, Guosheng; Wang, Gefei; Chen, Jun; Fan, Chaogang; Wang, Xinbo; Li, Jieshou

    2014-04-01

    The use of open abdomen in the management of gastrointestinal fistula complicated with severe intra-abdominal infection is uncommon. This study was designed to evaluate outcomes of our staged approach for the infected open abdomen. Patients who had gastrointestinal fistula and underwent open abdomen treatment were retrospectively reviewed. Various materials such as polypropylene mesh and a modified sandwich package were used to achieve temporary abdominal closure followed by skin grafting when the granulation bed matured. A delayed definitive operation was performed for final abdominal closure without implant of prosthetic mesh. Between 1999 and 2009, 56 (68.3%) of 82 patients survived through this treatment. Among them, 42 patients achieved final abdominal closure. Spontaneous fistula closure occurred in 16 patients with secondary fistula recorded in six patients. Besides, wound complications occurred in 13 patients with two cases for pulmonary infection. Within a 12-month follow-up period after definitive closure, no additional fistula was recorded excluding planned ventral hernia repair. Open abdomen treatment was effective for gastrointestinal fistula complicated by severe intra-abdominal infection. A delayed and deliberate operative strategy aiming at fistula excision and fascial closure, with simultaneous abdominal wall reconstruction, was required for the infected open abdomen.

  3. The Development of Object Permanence in Children with Intellectual Disability, Physical Disability, Autism, and Blindness

    ERIC Educational Resources Information Center

    Bruce, Susan; Muhammad, Zayyad

    2009-01-01

    This article presents a review of the literature on object permanence with an emphasis on research on children with severe disabilities. Object permanence is the realisation that objects continue to exist in time and place even when they are no longer visible. This understanding is achieved across Stages IV-VI of Piaget's Sensorimotor Period.…

  4. Magnetic Fields: Visible and Permanent.

    ERIC Educational Resources Information Center

    Winkeljohn, Dorothy R.; Earl, Robert D.

    1983-01-01

    Children will be able to see the concept of a magnetic field translated into a visible reality using the simple method outlined. Standard shelf paper, magnets, iron filings, and paint in a spray can are used to prepare a permanent and well-detailed picture of the magnetic field. (Author/JN)

  5. 10 CFR 60.111 - Performance of the geologic repository operations area through permanent closure.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... OF HIGH-LEVEL RADIOACTIVE WASTES IN GEOLOGIC REPOSITORIES Technical Criteria Performance Objectives...) Protection against radiation exposures and releases of radioactive material. The geologic repository... radiation levels, and releases of radioactive materials to unrestricted areas, will be maintained within...

  6. 10 CFR 60.113 - Performance of particular barriers after permanent closure.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... RADIOACTIVE WASTES IN GEOLOGIC REPOSITORIES Technical Criteria Performance Objectives § 60.113 Performance of... rate limit shall be taken to be one part in 100,000 per year of the inventory of radioactive waste... designed, assuming anticipated processes and events, so that: (A) Containment of HLW within the...

  7. 10 CFR 60.111 - Performance of the geologic repository operations area through permanent closure.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... OF HIGH-LEVEL RADIOACTIVE WASTES IN GEOLOGIC REPOSITORIES Technical Criteria Performance Objectives...) Protection against radiation exposures and releases of radioactive material. The geologic repository... radiation levels, and releases of radioactive materials to unrestricted areas, will be maintained within...

  8. 10 CFR 60.111 - Performance of the geologic repository operations area through permanent closure.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... OF HIGH-LEVEL RADIOACTIVE WASTES IN GEOLOGIC REPOSITORIES Technical Criteria Performance Objectives...) Protection against radiation exposures and releases of radioactive material. The geologic repository... radiation levels, and releases of radioactive materials to unrestricted areas, will be maintained within...

  9. 10 CFR 60.111 - Performance of the geologic repository operations area through permanent closure.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... OF HIGH-LEVEL RADIOACTIVE WASTES IN GEOLOGIC REPOSITORIES Technical Criteria Performance Objectives...) Protection against radiation exposures and releases of radioactive material. The geologic repository... radiation levels, and releases of radioactive materials to unrestricted areas, will be maintained within...

  10. 10 CFR 60.111 - Performance of the geologic repository operations area through permanent closure.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... OF HIGH-LEVEL RADIOACTIVE WASTES IN GEOLOGIC REPOSITORIES Technical Criteria Performance Objectives...) Protection against radiation exposures and releases of radioactive material. The geologic repository... radiation levels, and releases of radioactive materials to unrestricted areas, will be maintained within...

  11. 10 CFR 60.113 - Performance of particular barriers after permanent closure.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ..., originally emplaced in the underground facility, that remains after 1,000 years of radioactive decay. (2... RADIOACTIVE WASTES IN GEOLOGIC REPOSITORIES Technical Criteria Performance Objectives § 60.113 Performance of... the engineered barrier system are dominated by fission product decay; and (B) any release...

  12. 10 CFR 60.113 - Performance of particular barriers after permanent closure.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ..., originally emplaced in the underground facility, that remains after 1,000 years of radioactive decay. (2... RADIOACTIVE WASTES IN GEOLOGIC REPOSITORIES Technical Criteria Performance Objectives § 60.113 Performance of... the engineered barrier system are dominated by fission product decay; and (B) any release...

  13. 10 CFR 60.113 - Performance of particular barriers after permanent closure.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ..., originally emplaced in the underground facility, that remains after 1,000 years of radioactive decay. (2... RADIOACTIVE WASTES IN GEOLOGIC REPOSITORIES Technical Criteria Performance Objectives § 60.113 Performance of... the engineered barrier system are dominated by fission product decay; and (B) any release...

  14. 10 CFR 60.113 - Performance of particular barriers after permanent closure.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ..., originally emplaced in the underground facility, that remains after 1,000 years of radioactive decay. (2... RADIOACTIVE WASTES IN GEOLOGIC REPOSITORIES Technical Criteria Performance Objectives § 60.113 Performance of... the engineered barrier system are dominated by fission product decay; and (B) any release...

  15. 10 CFR 63.111 - Performance objectives for the geologic repository operations area through permanent closure.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... retrieval throughout the period during which wastes are being emplaced and thereafter, until the completion... retrievability. (3) For purposes of paragraph (e) of this section, a reasonable schedule for retrieval is one that would permit retrieval in about the same time as that required to construct the...

  16. 10 CFR 63.111 - Performance objectives for the geologic repository operations area through permanent closure.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... retrieval throughout the period during which wastes are being emplaced and thereafter, until the completion... retrievability. (3) For purposes of paragraph (e) of this section, a reasonable schedule for retrieval is one that would permit retrieval in about the same time as that required to construct the...

  17. Boon of MTA Apexification in Young Permanent Posterior Teeth

    PubMed Central

    Kumar, Vinod; Prasad, Vijaya; Mahantesh, T.

    2014-01-01

    Single visit apexification using mineral trioxide aggregate (MTA) is a new boon in effective management of nonvital tooth with an open apex which has steadily gained popularity with clinicians; also it shortens the treatment period and improves patient compliance. Importance of this approach lies in expedient cleaning and shaping of the root canal system, followed by its apical seal with MTA. There are several case reports available describing the use of MTA as an apexification agent in incisors and premolar, but presented cases are the unique case reports demonstrating successful apexification procedure using MTA in young permanent mandibular molars. After eight-month follow-up, teeth were without any abnormal clinical symptoms; rather there were radiographic resolution of the periapical lesion and induction of root end closure with new hard tissue formation over MTA. PMID:25431690

  18. Bilateral angle closure glaucoma following general anaesthesia.

    PubMed

    Raj, K Mohan; Reddy, P Arun Subhash; Kumar, Vikram Chella

    2015-04-01

    Angle closure glaucoma is one of the ophthalmic emergencies and treatment has to be given at the earliest. It is a rare complication of general anesthesia. A female patient underwent Hysterectomy under general anesthesia. Following this, patient developed bilateral angle closure glaucoma. This patient was treated with antiglaucoma medications followed by YAG laser iridotomy and patient regained vision.

  19. Hospital closure: Phoenix, Hydra or Titanic?

    PubMed

    Dunne, T; Davis, S

    1996-01-01

    Very little has been published about the effects of hospital closure in terms of the service, financial or management issues of the process. Attempts through a case-study format to redress the balance and as such represents the reflections of practitioners who have recently undergone the experience of hospital closure and the often neglected issues arising both during and after the process.

  20. 40 CFR 265.381 - Closure.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... STANDARDS FOR OWNERS AND OPERATORS OF HAZARDOUS WASTE TREATMENT, STORAGE, AND DISPOSAL FACILITIES Thermal Treatment § 265.381 Closure. At closure, the owner or operator must remove all hazardous waste and hazardous waste residues (including, but not limited to, ash) from the thermal treatment process or equipment....

  1. 40 CFR 265.381 - Closure.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... STANDARDS FOR OWNERS AND OPERATORS OF HAZARDOUS WASTE TREATMENT, STORAGE, AND DISPOSAL FACILITIES Thermal Treatment § 265.381 Closure. At closure, the owner or operator must remove all hazardous waste and hazardous waste residues (including, but not limited to, ash) from the thermal treatment process or equipment....

  2. 50 CFR 20.26 - Emergency closures.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... wildlife conservation agency, and announcement on local radio and television. (b) Any such closure or... 50 Wildlife and Fisheries 6 2010-10-01 2010-10-01 false Emergency closures. 20.26 Section 20.26 Wildlife and Fisheries UNITED STATES FISH AND WILDLIFE SERVICE, DEPARTMENT OF THE INTERIOR...

  3. 40 CFR 265.404 - Closure.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) SOLID WASTES (CONTINUED) INTERIM STATUS STANDARDS FOR OWNERS AND OPERATORS OF HAZARDOUS WASTE TREATMENT, STORAGE, AND DISPOSAL FACILITIES Chemical, Physical, and Biological Treatment § 265.404 Closure. At closure, all hazardous waste and hazardous...

  4. 40 CFR 265.404 - Closure.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) SOLID WASTES (CONTINUED) INTERIM STATUS STANDARDS FOR OWNERS AND OPERATORS OF HAZARDOUS WASTE TREATMENT, STORAGE, AND DISPOSAL FACILITIES Chemical, Physical, and Biological Treatment § 265.404 Closure. At closure, all hazardous waste and hazardous...

  5. 40 CFR 265.404 - Closure.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) SOLID WASTES (CONTINUED) INTERIM STATUS STANDARDS FOR OWNERS AND OPERATORS OF HAZARDOUS WASTE TREATMENT, STORAGE, AND DISPOSAL FACILITIES Chemical, Physical, and Biological Treatment § 265.404 Closure. At closure, all hazardous waste and hazardous...

  6. 40 CFR 265.404 - Closure.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) SOLID WASTES (CONTINUED) INTERIM STATUS STANDARDS FOR OWNERS AND OPERATORS OF HAZARDOUS WASTE TREATMENT, STORAGE, AND DISPOSAL FACILITIES Chemical, Physical, and Biological Treatment § 265.404 Closure. At closure, all hazardous waste and hazardous...

  7. 40 CFR 265.404 - Closure.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) SOLID WASTES (CONTINUED) INTERIM STATUS STANDARDS FOR OWNERS AND OPERATORS OF HAZARDOUS WASTE TREATMENT, STORAGE, AND DISPOSAL FACILITIES Chemical, Physical, and Biological Treatment § 265.404 Closure. At closure, all hazardous waste and hazardous...

  8. 2005 Base Closure and Realignment Commission Report

    EPA Pesticide Factsheets

    The 2005 Defense Base Closure and Realignment Commission is proud to present its Final Report for your consideration. As required by law, the Commission thoroughly and objectively reviewed the domestic installation closure and realignment recommendations proposed by the Secretary of Defense on May 13, 2005.

  9. Permanent bending and alignment of ZnO nanowires.

    PubMed

    Borschel, Christian; Spindler, Susann; Lerose, Damiana; Bochmann, Arne; Christiansen, Silke H; Nietzsche, Sandor; Oertel, Michael; Ronning, Carsten

    2011-05-06

    Ion beams can be used to permanently bend and re-align nanowires after growth. We have irradiated ZnO nanowires with energetic ions, achieving bending and alignment in different directions. Not only the bending of single nanowires is studied in detail, but also the simultaneous alignment of large ensembles of ZnO nanowires. Computer simulations reveal how the bending is initiated by ion beam induced damage. Detailed structural characterization identifies dislocations to relax stresses and make the bending and alignment permanent, even surviving annealing procedures.

  10. Closure for milliliter scale bioreactor

    DOEpatents

    Klein, David L.; Laidlaw, Robert D.; Andronaco, Gregory; Boyer, Stephen G.

    2010-12-14

    A closure for a microreactor includes a cap that is configured to be inserted into a well of the microreactor. The cap, or at least a portion of the cap, is compliant so as to form a seal with the well when the cap is inserted. The cap includes an aperture that provides an airway between the inside of the well to the external environment when the cap is inserted into the well. A porous plug is inserted in the aperture, e.g., either directly or in tube that extends through the aperture. The porous plug permits gas within the well to pass through the aperture while preventing liquids from passing through to reduce evaporation and preventing microbes from passing through to provide a sterile environment. A one-way valve may also be used to help control the environment in the well.

  11. A segmented appliance for space closure followed by Invisalign and fixed appliances.

    PubMed

    Uribe, Flavio; Cutrera, Alice; Nanda, Ravinda

    2011-01-01

    This case report describes the use of a segmented appliance for space closure prior to using Invisalign. The maxillary right canine was retracted into the extracted first premolar space with a sectional wire from the first molar to the canine with no visible brackets in the incisor region. The advantage of this technique is the ability to achieve better root and rotational control during space closure with a fixed appliance that also has limited visibility. A maxillary fixed appliance was used to refine the esthetics in the maxillary arch due to the limitations of the Invisalign appliance in achieving rotational and vertical movements.

  12. Public risk perception and attitudes towards live poultry markets before and after their closure due to influenza A(H7N9), Hong Kong, January–February 2014

    PubMed Central

    Liao, Qiuyan; Wu, Peng; Lam, Wendy Wing Tak; Fang, Vicky J.; Wu, Joseph T.; Leung, Gabriel M.; Fielding, Richard; Cowling, Benjamin J.

    2016-01-01

    Background The study investigated public risk perception regarding influenza A(H7N9) and attitudes towards closure of live poultry markets (LPMs) before and after LPMs closed in Hong Kong. Methods Two population-based surveys were conducted before and after LPMs closed in January–February 2014, respectively. Adults were recruited using random digital dialing. Results In total, 670 and 1011 respondents completed the survey before and after closure of LPMs, respectively. Perceived susceptibility to H7N9 infection was low across surveys. Among respondents who completed the survey after LPMs closed, only 14.6% agreed that temporary closure of LPMs caused inconvenience to the daily life; 38.7% valued the Chinese tradition of live poultry consumption more than controlling the risk of avian influenza; 54.6% recognized greater risk of influenza epidemic associated with LPMs. Support for permanent closure of LPMs which was comparably low across surveys was strongly associated with perceived risk of avian influenza related to LPMs, the effectiveness of LPM closure in control of avian influenza and the inconvenience caused by closure. Conclusions Risk communication that promotes people's perceived risk of avian influenza associated with LPMs and the effectiveness of LPM closure in control of avian influenza outbreaks may improve support for permanent closure of LPMs. PMID:25717043

  13. EDITORIAL: Permanent revolution - or evolution?

    NASA Astrophysics Data System (ADS)

    Dobson, Ken

    1998-03-01

    Honorary Editor It was that temporary Bolshevik Leon Trotsky who developed the principle of `permanent revolution', a principle that perhaps characterizes the recent history of education in (south) Britain more than does, say, principles traditionally associated with the Conservative or Labour parties. As this editorial is being written, changes are being made to primary school education, and the long-awaited details of the post-Dearing reorganizing of post-16 education are yet to hit the overful bookshelves and filing cabinets of school heads and examination board officials. But something unique has happened recently which might have surprised even Trotsky. The Secretary of State for Education has set up targets for primary school pupils' attainment and threatened (or promised) to resign if they are not met within the lifetime of our newly elected parliament. Of course, if Mr Blunkett is still in a position to resign at that stage he will have been the longest serving Secretary of State since time immemorial. But we should not carp: this is truly a revolutionary idea. Not the promise to resign - although this idea is not so fashionable now as it once was. The revolutionary idea is that a major change to an educational process is actually being made that carries with it a predicted and testable outcome. By contrast, when school physics was refreshed a generation ago by the introduction of Nuffield courses at both pre- and post-16 stages, no `targets' were set. I and many other physics teachers certainly preferred teaching these to teaching their predecessor syllabuses, and might even dare to assert that the pupils liked them too. But we still don't really know whether or not they learned more - or even better - physics. Very little happened as far as the outside world was concerned: the usual fraction of students gave up physics at the usual ages, and those who were examined didn't really get a better reward for their more up-to-date and more enjoyably learned

  14. Diastema Closure in Anterior Teeth Using a Posterior Matrix

    PubMed Central

    Singh, Ritu

    2016-01-01

    Presence of diastema between anterior teeth is often considered an onerous esthetic problem. Various treatment modalities are available for diastema closure. However, not all diastemas can be treated the same in terms of modality or timing. The extent and the etiology of the diastema must be properly evaluated. Proper case selection is of paramount importance for a successful treatment. In this case report, diastema closure was performed with direct composite restorations. One bottle etch-and-rinse adhesive was used and a single shade was used to close the diastemas. Contoured sectional posterior matrix was used to achieve anatomic contouring of the proximal surfaces of the teeth. This was followed by finishing and polishing using polishing discs. Patient was kept on recall every 6 months. Conclusion. Diastema closure with correct anatomic contouring is easy to perform using the contoured sectional matrices. At 14-month recall, no clinical signs of failure like discoloration or fracture were evident. Also, patient did not complain of any sensitivity. Thus, direct composite restorations serve as durable and highly esthetic restorations leading to complete patient satisfaction. PMID:27818804

  15. Tattoos and Permanent Make-Up

    MedlinePlus

    ... For Consumers Consumer Information by Audience For Women Tattoos and Permanent Make-up Share Tweet Linkedin Pin ... Risks FDA's Role Tattoo Removal Options Types of Tattoos Permanent Tattoo : A needle inserts colored ink into ...

  16. Genetics Home Reference: permanent neonatal diabetes mellitus

    MedlinePlus

    ... Facebook Share on Twitter Your Guide to Understanding Genetic Conditions Search MENU Toggle navigation Home Page Search ... Conditions Genes Chromosomes & mtDNA Resources Help Me Understand Genetics Home Health Conditions permanent neonatal diabetes mellitus permanent ...

  17. Factors Associated with Increasing Nursing Home Closures

    PubMed Central

    Castle, Nicholas G; Engberg, John; Lave, Judith; Fisher, Andrew

    2009-01-01

    Purpose We determine the rate of nursing home closures for 7 years (1999–2005) and examine internal (e.g., quality), organizational (e.g., chain membership), and external (e.g., competition) factors associated with these closures. Design and Method The names of the closed facilities and dates of closure from state regulators in all 50 states were obtained. This information was linked to the Online Survey, Certification, and Reporting data, which contains information on internal, organizational, and market factors for almost all nursing homes in the United States. Results One thousand seven hundred and eighty-nine facilities closed over this time period (1999–2005). The average annual rate of closure was about 2 percent of facilities, but the rate of closure was found to be increasing. Nursing homes with higher rates of deficiency citations, hospital-based facilities, chain members, small bed size, and facilities located in markets with high levels of competition were more likely to close. High Medicaid occupancy rates were associated with a high likelihood of closure, especially for facilities with low Medicaid reimbursement rates. Implications As states actively debate about how to redistribute long-term care services/dollars, our findings show that they should be cognizant of the potential these decisions have for facilitating nursing home closures. PMID:19674434

  18. Reaching Site Closure for Groundwater under Multiple Regulatory Agencies

    SciTech Connect

    Glucksberg, N.; Shephard, Gene; Peters, Jay; Couture, B.

    2008-01-15

    Groundwater at the Connecticut Yankee Atomic Power Company (CYAPCO) Haddam Neck Plant (HNP) requires investigation of both radionuclides and chemical constituents in order to achieve closure. Cleanup criteria for groundwater are regulated both by federal and state agencies. These requirements vary in both numerical values as well as the duration of post remediation monitoring. The only consistent requirement is the development of a site conceptual model and an understanding of the hydrogeologic conditions that will govern contaminant transport and identify potential receptors. To successfully reach closure under each agency, it is paramount to understand the different requirements during the planning stages of the investigation. Therefore, the conceptual site model, groundwater transport mechanisms, and potential receptors must be defined. Once the hydrogeology is understood, a long term groundwater program can then be coordinated to meet each regulatory agency requirement to both terminate the NRC license and reach site closure under RCRA. Based on the different criteria, the CTDEP-LR (or RSR criteria) are not only bounding, but also requires the longest duration. As with most decommissioning efforts, regulatory attention is focused on the NRC, however, with the recent industry initiatives based on concern of tritium releases to groundwater at other plants, it is likely that the USEPA and state agencies may continue to drive site investigations. By recognizing these differences, data quality objectives can include all agency requirements, thus minimizing rework or duplicative efforts. CYAPCO intends to complete groundwater monitoring for the NRC and CTDEP-RD by July 2007. However, because shallow remediations are still being conducted, site closure under USEPA and CTDEP-LR is projected to be late 2011.

  19. Yucca Mountain Waste Package Closure System

    SciTech Connect

    Herschel Smartt; Arthur Watkins; David Pace; Rodney Bitsoi; Eric Larsen; Timothy McJunkin; Charles Tolle

    2006-04-01

    The current disposal path for high-level waste is to place the material into secure waste packages that are inserted into a repository. The Idaho National Laboratory has been tasked with the development, design, and demonstration of the waste package closure system for the repository project. The closure system design includes welding three lids and a purge port cap, four methods of nondestructive examination, and evacuation and backfill of the waste package, all performed in a remote environment. A demonstration of the closure system will be performed with a full-scale waste package.

  20. Yucca Mountain Waste Package Closure System

    SciTech Connect

    shelton-davis; Colleen Shelton-Davis; Greg Housley

    2005-10-01

    The current disposal path for high-level waste is to place the material into secure waste packages that are inserted into a repository. The Idaho National Laboratory has been tasked with the development, design, and demonstration of the waste package closure system for the repository project. The closure system design includes welding three lids and a purge port cap, four methods of nondestructive examination, and evacuation and backfill of the waste package, all performed in a remote environment. A demonstration of the closure system will be performed with a full-scale waste package.

  1. 21 CFR 886.4445 - Permanent magnet.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 21 Food and Drugs 8 2012-04-01 2012-04-01 false Permanent magnet. 886.4445 Section 886.4445 Food... DEVICES OPHTHALMIC DEVICES Surgical Devices § 886.4445 Permanent magnet. (a) Identification. A permanent magnet is a nonelectric device that generates a magnetic field intended to find and remove...

  2. 21 CFR 886.4445 - Permanent magnet.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 21 Food and Drugs 8 2010-04-01 2010-04-01 false Permanent magnet. 886.4445 Section 886.4445 Food... DEVICES OPHTHALMIC DEVICES Surgical Devices § 886.4445 Permanent magnet. (a) Identification. A permanent magnet is a nonelectric device that generates a magnetic field intended to find and remove...

  3. 21 CFR 886.4445 - Permanent magnet.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 21 Food and Drugs 8 2013-04-01 2013-04-01 false Permanent magnet. 886.4445 Section 886.4445 Food... DEVICES OPHTHALMIC DEVICES Surgical Devices § 886.4445 Permanent magnet. (a) Identification. A permanent magnet is a nonelectric device that generates a magnetic field intended to find and remove...

  4. Gating of Permanent Molds for Aluminum Casting

    SciTech Connect

    David Schwam; John F. Wallace; Tom Engle; Qingming Chang

    2004-01-01

    sprue-wells should be evaluated. In order for a runner extension to operate efficiently, it must have a small squared cross-section. If it is tapered, the first metal to enter the first metal to enter the system is not effectively trapped. If the cross section is large, there is less turbulence when the aluminum enters the mold cavity in comparison to the smaller cross sectioned, squared runner. However, a large runner reduces yield. In bottom-feeding gating systems, a filter can significantly improve the filling of the casting. The filter helps to slow the metal flow rate enough to reduce jetting into the mold cavity. In top feeding gating systems, a filter can initially slow the metal flow rate, but because the metal drops after passing the filter, high velocities are achieved during free fall when a filter is in place. Side feeding gating systems provide less turbulent flow into the mold cavity. The flow is comparable to a bottom-feeding gating system with a filter. Using properly designed side-gating system instead of a bottom-feeding system with a filter can potentially save the cost of the filter. Rough coatings promote better fill than smooth coatings. This conclusion seems at first counter intuitive. One tends to assume a rough coating creates more friction resistance to the flow of molten metal. In actuality the molten aluminum stream flows inside an oxide film envelope. When this film rests on top of the ridges of a rough coating the microscopic air pockets between the coating and the oxide film provide more thermal insulation than in a smooth coating. This insulation promotes longer feeding distances in the mold as demonstrated in the experiments. Much of this work is applicable to vertically parted sand molds as well, although the heat transfer conditions do vary from a metal mold generally used in permanent molding of aluminum. The flow measurements were conducted using graphite molds and real time X-Ray radiography recorded at a rate of 30 images per

  5. HWMA/RCRA Closure Plan for the CPP-602 Laboratory Lines

    SciTech Connect

    Idaho Cleanup Project

    2009-09-30

    This Hazardous Waste Management Act/Resource Conservation and Recovery Act Closure (HWMA/RCRA) Plan for the CPP-602 laboratory lines was developed to meet the tank system closure requirements of the Idaho Administrative Procedures Act 58.01.05.008 and 40 Code of Federal Regulations 264, Subpart G. CPP-602 is located at the Idaho Nuclear Technology and Engineering Center at the Idaho National Laboratory Site. The lines in CPP-602 were part of a liquid hazardous waste collection system included in the Idaho Nuclear Technology and Engineering Center Liquid Waste Management System Permit. The laboratory lines discharged to the Deep Tanks System in CPP-601 that is currently being closed under a separate closure plan. This closure plan presents the closure performance standards and the methods for achieving those standards. The closure approach for the CPP-602 laboratory lines is to remove the lines, components, and contaminants to the extent practicable. Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) Site CPP-117 includes the CPP-602 waste trench and the area beneath the basement floor where waste lines are direct-buried. Upon completion of rinsing or mopping to remove contamination to the extent practicable from the waste trench and rinsing the intact buried lines (i.e., stainless steel sections), these areas will be managed as part of CERCLA Site CPP-117 and will not be subject to further HWMA/RCRA closure activities. The CPP-602 building is being decontaminated and decommissioned under CERCLA as a non-time critical removal action in accordance with the Federal Facility Agreement/Consent Order. As such, all waste generated by this CERCLA action, including closure-generated waste, will be managed in coordination with that CERCLA action in substantive compliance with HWMA/RCRA regulations. All waste will be subject to a hazardous waste determination for the purpose of supporting appropriate management and will be managed in accordance

  6. Treatment of Angio-Seal® Vascular Closure Device-Induced Acute Femoral Artery Occlusion with SilverHawk® Directional Atherectomy

    PubMed Central

    Sharma, Rishi; Vamanan, Karthik

    2016-01-01

    Vascular closure devices provide a safe and cost-effective method to achieve rapid hemostasis and early ambulation after angiographic procedures. Rarely, they can result in arterial injury with resultant stenosis or acute arterial closure requiring open surgical intervention. We report an Angio-Seal® vascular closure device-induced acute arterial closure successfully treated percutaneously with the SilverHawk® plaque excision system. This report discusses the possible mechanisms of Angio-Seal® induced arterial occlusion and various percutaneous options for treatment. PMID:28083454

  7. The TopClosure® 3S System, for skin stretching and a secure wound closure.

    PubMed

    Topaz, Moris; Carmel, Narin-Nard; Silberman, Adi; Li, Ming Sen; Li, Yong Zhong

    2012-07-01

    The principle of stretching wound margins for primary wound closure is commonly practiced and used for various skin defects, leading at times to excessive tension and complications during wound closure. Different surgical techniques, skin stretching devices and tissue expanders have been utilized to address this issue. Previously designed skin stretching devices resulted in considerable morbidity. They were invasive by nature and associated with relatively high localized tissue pressure, frequently leading to necrosis, damage and tearing of skin at the wound margins. To assess the clinical effectiveness and performance and, to determine the safety of TopClosure® for gradual, controlled, temporary, noninvasive and invasive applications for skin stretching and secure wound closing, the TopClosure® device was applied to 20 patients for preoperative skin lesion removal and to secure closure of a variety of wound sizes. TopClosure® was reinforced with adhesives, staples and/or surgical sutures, depending on the circumstances of the wound and the surgeon's judgment. TopClosure® was used prior to, during and/or after surgery to reduce tension across wound edges. No significant complications or adverse events were associated with its use. TopClosure® was effectively used for preoperative skin expansion in preparation for dermal resection (e.g., congenital nevi). It aided closure of large wounds involving significant loss of skin and soft tissue by mobilizing skin and subcutaneous tissue, thus avoiding the need for skin grafts or flaps. Following surgery, it was used to secure closure of wounds under tension, thus improving wound aesthetics. A sample case study will be presented. We designed TopClosure®, an innovative device, to modify the currently practiced concept of wound closure by applying minimal stress to the skin, away from damaged wound edges, with flexible force vectors and versatile methods of attachment to the skin, in a noninvasive or invasive manner.

  8. Extender for securing a closure

    DOEpatents

    Thomas, II, Patrick A.

    2012-10-02

    An apparatus for securing a closure such as door or a window that opens and closes by movement relative to a fixed structure such as a wall or a floor. Many embodiments provide a device for relocating a padlock from its normal location where it secures a fastener (such as a hasp) to a location for the padlock that is more accessible for locking and unlocking the padlock. Typically an extender is provided, where the extender has a hook at a first end that is disposed through the eye of the staple of the hasp, and at an opposing second end the extender has an annulus, such as a hole in the extender or a loop or ring affixed to the extender. The shackle of the padlock may be disposed through the annulus and may be disposed through the eye of a second staple to secure the door or window in a closed or open position. Some embodiments employ a rigid sheath to enclose at least a portion of the extender. Typically the rigid sheath has an open state where the hook is exposed outside the sheath and a closed state where the hook is disposed within the sheath.

  9. Permanent-File-Validation Utility Computer Program

    NASA Technical Reports Server (NTRS)

    Derry, Stephen D.

    1988-01-01

    Errors in files detected and corrected during operation. Permanent File Validation (PFVAL) utility computer program provides CDC CYBER NOS sites with mechanism to verify integrity of permanent file base. Locates and identifies permanent file errors in Mass Storage Table (MST) and Track Reservation Table (TRT), in permanent file catalog entries (PFC's) in permit sectors, and in disk sector linkage. All detected errors written to listing file and system and job day files. Program operates by reading system tables , catalog track, permit sectors, and disk linkage bytes to vaidate expected and actual file linkages. Used extensively to identify and locate errors in permanent files and enable online correction, reducing computer-system downtime.

  10. 50 CFR 622.246 - Area closures.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ..., DEPARTMENT OF COMMERCE FISHERIES OF THE CARIBBEAN, GULF OF MEXICO, AND SOUTH ATLANTIC Golden Crab Fishery of the South Atlantic Region § 622.246 Area closures. (a) Golden crab trap closed areas. In the...

  11. 50 CFR 622.246 - Area closures.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ..., DEPARTMENT OF COMMERCE FISHERIES OF THE CARIBBEAN, GULF OF MEXICO, AND SOUTH ATLANTIC Golden Crab Fishery of the South Atlantic Region § 622.246 Area closures. (a) Golden crab trap closed areas. In the...

  12. Reliability assessment of underground shaft closure

    SciTech Connect

    Fossum, A.F.

    1994-12-31

    The intent of the WIPP, being constructed in the bedded geologic salt deposits of Southeastern New Mexico, is to provide the technological basis for the safe disposal of radioactive Transuranic (TRU) wastes generated by the defense programs of the United States. In determining this technological basis, advanced reliability and structural analysis techniques are used to determine the probability of time-to-closure of a hypothetical underground shaft located in an argillaceous salt formation and filled with compacted crushed salt. Before being filled with crushed salt for sealing, the shaft provides access to an underground facility. Reliable closure of the shaft depends upon the sealing of the shaft through creep closure and recompaction of crushed backfill. Appropriate methods are demonstrated to calculate cumulative distribution functions of the closure based on laboratory determined random variable uncertainty in salt creep properties.

  13. 50 CFR 622.43 - Closures.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... sold prior to the effective date of the closure and were held in cold storage by a dealer or processor... § 622.42 being reached and subsequent data indicate that the quota was not reached, the...

  14. Cavity closure arrangement for high pressure vessels

    DOEpatents

    Amtmann, Hans H.

    1981-01-01

    A closure arrangement for a pressure vessel such as the pressure vessel of a high temperature gas-cooled reactor wherein a liner is disposed within a cavity penetration in the reactor vessel and defines an access opening therein. A closure is adapted for sealing relation with an annular mounting flange formed on the penetration liner and has a plurality of radially movable locking blocks thereon having outer serrations adapted for releasable interlocking engagement with serrations formed internally of the upper end of the penetration liner so as to effect high strength closure hold-down. In one embodiment, ramping surfaces are formed on the locking block serrations to bias the closure into sealed relation with the mounting flange when the locking blocks are actuated to locking positions.

  15. Plasma-cathode-initiated vacuum gap closure

    SciTech Connect

    Sampayan, S.E.; Gurbaxani, S.H. ); Buttram, M.T. )

    1990-09-01

    The properties of vacuum gap closure initiated by a plasma cathode are presented. The plasma cathode consisted of approximately 60 surface flashover sites distributed over a 10-cm{sup 2} area. Vacuum gap dimensions were 1{times}7.5 cm in diameter. Faraday cup measurements indicated an ion density greater than 10{sup 12} cm{sup {minus}3}, which was controllable by the amplitude of the initiating high-voltage pulse. Although the field-free expansion velocity of the plasma was measured to be 7 cm/{mu}s, plasma-cathode-initiated closure of the vacuum gap indicated closure speeds on the order of 0.5 cm/{mu}s. Also, increased injected ion density and increased anode-cathode potential resulted in increased closure velocity.

  16. Total knee arthroplasty closure with barbed sutures.

    PubMed

    Eickmann, Tom; Quane, Erika

    2010-09-01

    Bidirectional barbed sutures, which do not require the tying of knots, have the potential to reduce closure times of total knee arthroplasty (TKA) wounds without adverse effect to wound security, cosmesis, or infection risk. In this retrospective study, data were reviewed from TKAs performed between January 2007 and September 2008. For 88 of these procedures, conventional absorbable sutures were used for interrupted closure of the retinacular and subcutaneous layers and for running closure of the subcuticular layer. For 90 procedures, bidirectional barbed absorbable sutures were used for running closure of the retinacular and subcutaneous layers. Surgeries performed with barbed sutures were significantly faster than those performed with conventional sutures (mean times of 74.3 minutes and 85.8 minutes, respectively, p < 0.001) with no detrimental clinical effects.

  17. Options for Closure of the Infected Abdomen

    PubMed Central

    Campbell, Chris A.; Rosenberger, Laura H.; Politano, Amani D.; Davies, Stephen W.; Riccio, Lin M.; Sawyer, Robert G.

    2012-01-01

    Abstract Background The infected abdomen poses substantial challenges to surgeons, and often, both temporary and definitive closure techniques are required. We reviewed the options available to close the abdominal wall defect encountered frequently during and after the management of complicated intra-abdominal infections. Methods A comprehensive review was performed of the techniques and literature on abdominal closure in the setting of intra-abdominal infection. Results Temporary abdominal closure options include the Wittmann Patch, Bogota bag, vacuum-assisted closure (VAC), the AbThera™ device, and synthetic or biologic mesh. Definitive reconstruction has been described with mesh, components separation, and autologous tissue transfer. Conclusion Reconstructing the infected abdomen, both temporarily and definitively, can be accomplished with various techniques, each of which is associated with unique advantages and disadvantages. Appropriate judgment is required to optimize surgical outcomes in these complex cases. PMID:23216525

  18. TECHNICAL ASPECTS OF UNDERGROUND STORAGE TANK CLOSURE

    EPA Science Inventory

    The overall objective of the study was to develop a deeper understanding of UST residuals at closure: their quantities, origins, physical/chemical properties, ease of removal by various cleaning methods, and their environmental mobility and persistence. The investigation covered ...

  19. 40 CFR 267.117 - How do I certify closure?

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 40 Protection of Environment 26 2010-07-01 2010-07-01 false How do I certify closure? 267.117 Section 267.117 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) SOLID WASTES... PERMIT Closure § 267.117 How do I certify closure? Within 60 days of the completion of final closure...

  20. 40 CFR 267.117 - How do I certify closure?

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 40 Protection of Environment 27 2011-07-01 2011-07-01 false How do I certify closure? 267.117 Section 267.117 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) SOLID WASTES... PERMIT Closure § 267.117 How do I certify closure? Within 60 days of the completion of final closure...

  1. 40 CFR 267.117 - How do I certify closure?

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 40 Protection of Environment 28 2012-07-01 2012-07-01 false How do I certify closure? 267.117 Section 267.117 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) SOLID WASTES... PERMIT Closure § 267.117 How do I certify closure? Within 60 days of the completion of final closure...

  2. 40 CFR 258.61 - Post-closure care requirements.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 40 Protection of Environment 25 2014-07-01 2014-07-01 false Post-closure care requirements. 258.61 Section 258.61 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) SOLID WASTES CRITERIA FOR MUNICIPAL SOLID WASTE LANDFILLS Closure and Post-Closure Care § 258.61 Post-closure...

  3. 40 CFR 258.61 - Post-closure care requirements.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 40 Protection of Environment 25 2011-07-01 2011-07-01 false Post-closure care requirements. 258.61 Section 258.61 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) SOLID WASTES CRITERIA FOR MUNICIPAL SOLID WASTE LANDFILLS Closure and Post-Closure Care § 258.61 Post-closure...

  4. 40 CFR 258.61 - Post-closure care requirements.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 40 Protection of Environment 26 2012-07-01 2011-07-01 true Post-closure care requirements. 258.61 Section 258.61 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) SOLID WASTES CRITERIA FOR MUNICIPAL SOLID WASTE LANDFILLS Closure and Post-Closure Care § 258.61 Post-closure...

  5. Occupancy estimation and the closure assumption

    USGS Publications Warehouse

    Rota, Christopher T.; Fletcher, Robert J.; Dorazio, Robert M.; Betts, Matthew G.

    2009-01-01

    1. Recent advances in occupancy estimation that adjust for imperfect detection have provided substantial improvements over traditional approaches and are receiving considerable use in applied ecology. To estimate and adjust for detectability, occupancy modelling requires multiple surveys at a site and requires the assumption of 'closure' between surveys, i.e. no changes in occupancy between surveys. Violations of this assumption could bias parameter estimates; however, little work has assessed model sensitivity to violations of this assumption or how commonly such violations occur in nature. 2. We apply a modelling procedure that can test for closure to two avian point-count data sets in Montana and New Hampshire, USA, that exemplify time-scales at which closure is often assumed. These data sets illustrate different sampling designs that allow testing for closure but are currently rarely employed in field investigations. Using a simulation study, we then evaluate the sensitivity of parameter estimates to changes in site occupancy and evaluate a power analysis developed for sampling designs that is aimed at limiting the likelihood of closure. 3. Application of our approach to point-count data indicates that habitats may frequently be open to changes in site occupancy at time-scales typical of many occupancy investigations, with 71% and 100% of species investigated in Montana and New Hampshire respectively, showing violation of closure across time periods of 3 weeks and 8 days respectively. 4. Simulations suggest that models assuming closure are sensitive to changes in occupancy. Power analyses further suggest that the modelling procedure we apply can effectively test for closure. 5. Synthesis and applications. Our demonstration that sites may be open to changes in site occupancy over time-scales typical of many occupancy investigations, combined with the sensitivity of models to violations of the closure assumption, highlights the importance of properly addressing

  6. HWMA/RCRA Closure Plan for the TRA Fluorinel Dissolution Process Mockup and Gamma Facilities Waste System

    SciTech Connect

    K. Winterholler

    2007-01-31

    This Hazardous Waste Management Act/Resource Conservation and Recovery Act closure plan was developed for the Test Reactor Area Fluorinel Dissolution Process Mockup and Gamma Facilities Waste System, located in Building TRA-641 at the Reactor Technology Complex (RTC), Idaho National Laboratory Site, to meet a further milestone established under the Voluntary Consent Order SITE-TANK-005 Action Plan for Tank System TRA-009. The tank system to be closed is identified as VCO-SITE-TANK-005 Tank System TRA-009. This closure plan presents the closure performance standards and methods for achieving those standards.

  7. Method of making permanent magnets

    DOEpatents

    McCallum, R.W.; Dennis, K.W.; Lograsso, B.K.; Anderson, I.E.

    1993-09-07

    A method for making an isotropic permanent magnet comprises atomizing a melt of a rare earth-transition metal alloy (e.g., an Nd--Fe--B alloy enriched in Nd and B) under conditions to produce protectively coated, rapidly solidified, generally spherical alloy particles. Wherein a majority of the particles are produced/size classified within a given size fraction (e.g., 5 to 40 microns diameter) exhibiting optimum as-atomized magnetic properties and subjecting the particles to concurrent elevated temperature and elevated isotropic pressure for a time effective to yield a densified, magnetically isotropic magnet compact having enhanced magnetic properties and mechanical properties. 13 figures.

  8. Method of making permanent magnets

    DOEpatents

    McCallum, R. William; Dennis, Kevin W.; Lograsso, Barbara K.; Anderson, Iver E.

    1993-09-07

    A method for making an isotropic permanent magnet comprises atomizing a melt of a rare earth-transition metal alloy (e.g., an Nd--Fe--B alloy enriched in Nd and B) under conditions to produce protectively coated, rapidly solidified, generally spherical alloy particles wherein a majority of the particles are produced/size classified within a given size fraction (e.g., 5 to 40 microns diameter) exhibiting optimum as-atomized magnetic properties and subjecting the particles to concurrent elevated temperature and elevated isotropic pressure for a time effective to yield a densified, magnetically isotropic magnet compact having enhanced magnetic properties and mechanical properties.

  9. Ultrasonic characterization of fatigue crack closure

    SciTech Connect

    Thompson, R.B.; Buck, O.; Rehbein, D.K.

    1991-01-01

    The characterization of fatigue crack closure is an important objective because of its influence on fatigue crack propagation, particularly under conditions of variable amplitude loading. This paper describes a nontraditional technique for characterizing closure, in which ultrasonic scattering measurements are used to obtain estimates of the number density and size of asperities bridging the crack faces, with subsequent estimates of the crack tip shielding being based on those geometrical parameters. The paper first reviews the experimental configuration and the basic elasto-dynamic theory underlying the technique. It then presents recent results obtained in studies of the influence of block overloads and load shedding on the growth of fatigue cracks in aluminum alloys. In both cases, the change in the closure state after the overload can be unambiguously seen even in the raw data. Moreover, data analysis suggests that it may be possible to predict when the crack will reinitiate based on more subtle changes in the ultrasonically inferred closure state. In the case of load shedding, a massive closure region is observed, whose characteristics appear consistent with the notion that threshold phenomena can be explained in terms of crack closure. 20 refs., 10 figs.

  10. A Self-Contained Mapping Closure Approximation for Scalar Mixing

    NASA Technical Reports Server (NTRS)

    He, Guo-Wei; Zhang, Zi-Fan

    2003-01-01

    Scalar turbulence exhibits interplays of coherent structures and random fluctuations over a broad range of spatial and temporal scales. This feature necessitates a probabilistic description of the scalar dynamics, which can be achieved comprehensively by using probability density functions (PDFs). Therefore, the challenge is to obtain the scalar PDFs (Lundgren 1967; Dopazo 1979). Generally, the evolution of a scalar is governed by three dynamical processes: advection, diffusion and reaction. In a PDF approach (Pope 1985), the advection and reaction can be treated exactly but the effect of molecular diffusion has to be modeled. It has been shown (Pope 1985) that the effect of molecular diffusion can be expressed as conditional dissipation rates or conditional diffusions. The currently used models for the conditional dissipation rates and conditional diffusions (Pope 1991) have resisted deduction from the fundamental equations and are unable to yield satisfactory results for the basic test cases of decaying scalars in isotropic turbulence, although they have achieved some success in a variety of individual cases. The recently developed mapping closure approach (Pope 1991; Chen, Chen & Kraichnan 1989; Kraichnan 1990; Klimenko & Pope 2003) provides a deductive method for conditional dissipation rates and conditional di usions, and the models obtained can successfully describe the shape relaxation of the scalar PDF from an initial double delta distribution to a Gaussian one. However, the mapping closure approach is not able to provide the rate at which the scalar evolves. The evolution rate has to be modeled. Therefore, the mapping closure approach is not closed. In this letter, we will address this problem.

  11. Permanent split capacitor single phase electric motor system

    DOEpatents

    Kirschbaum, H.S.

    1984-08-14

    A permanent split capacitor single phase electric motor achieves balanced operation at more than one operating point by adjusting the voltage supplied to the main and auxiliary windings and adjusting the capacitance in the auxiliary winding circuit. An intermediate voltage tap on an autotransformer supplies voltage to the main winding for low speed operation while a capacitive voltage divider is used to adjust the voltage supplied to the auxiliary winding for low speed operation. 4 figs.

  12. Permanent split capacitor single phase electric motor system

    DOEpatents

    Kirschbaum, Herbert S.

    1984-01-01

    A permanent split capacitor single phase electric motor achieves balanced operation at more than one operating point by adjusting the voltage supplied to the main and auxiliary windings and adjusting the capacitance in the auxiliary winding circuit. An intermediate voltage tap on an autotransformer supplies voltage to the main winding for low speed operation while a capacitive voltage divider is used to adjust the voltage supplied to the auxiliary winding for low speed operation.

  13. NPAR- products, applications and closure

    SciTech Connect

    Vora, J.P.

    1995-04-01

    Almost a decade ago the Office of Nuclear Regulatory Research (RES) developed and implemented a comprehensive research program (NUREG-1144) widely known as NPAR or Nuclear Plant Aging Research. The NPAR program is a structured research program specifically oriented to understanding significant age-related degradation mechanisms and their long term effects on properties and performance of important components and systems and ways to mitigate detrimental effects of aging. It provided a road map and a phased approach to research that is applicable to any structure, system, or component of interest. This hardware-oriented engineering research program led the industry worldwide and communicated a need to understand and manage age-related degradation effects in selected but important structures and components. At the conclusion (1995) of the NPAR program, 22 electrical and mechanical components, 13 safety-related systems, and 10 special topics will have been studied and results summarized in 160 technical reports. This reference library of information listed and summarized in NUREG-1377, Rev. No. 4 provides a foundation upon which individual programs can be built for the specific needs of a utility, a regulator, or equipment manufacturers. During the life of the NPAR program, it has provided technical bases and support for license renewal, codes and standards, resolution of generic safety issues, information notices, regulatory guides and the standard Review Plan, as well as the Office of Nuclear Reactor Regulation and The NRC Regions. All ongoing NPAR activities will either be completed or terminated by the end of 1995. No new initiative will be undertaken. This paper summarizes NPAR products and accomplishments, application of the research results, and its status and closure.

  14. High-performance permanent magnets.

    PubMed

    Goll, D; Kronmüller, H

    2000-10-01

    High-performance permanent magnets (pms) are based on compounds with outstanding intrinsic magnetic properties as well as on optimized microstructures and alloy compositions. The most powerful pm materials at present are RE-TM intermetallic alloys which derive their exceptional magnetic properties from the favourable combination of rare earth metals (RE = Nd, Pr, Sm) with transition metals (TM = Fe, Co), in particular magnets based on (Nd.Pr)2Fe14B and Sm2(Co,Cu,Fe,Zr)17. Their development during the last 20 years has involved a dramatic improvement in their performance by a factor of > 15 compared with conventional ferrite pms therefore contributing positively to the ever-increasing demand for pms in many (including new) application fields, to the extent that RE-TM pms now account for nearly half of the worldwide market. This review article first gives a brief introduction to the basics of ferromagnetism to confer an insight into the variety of (permanent) magnets, their manufacture and application fields. We then examine the rather complex relationship between the microstructure and the magnetic properties for the two highest-performance and most promising pm materials mentioned. By using numerical micromagnetic simulations on the basis of the Finite Element technique the correlation can be quantitatively predicted, thus providing a powerful tool for the further development of optimized high-performance pms.

  15. High-performance permanent magnets

    NASA Astrophysics Data System (ADS)

    Goll, D.; Kronmüller, H.

    High-performance permanent magnets (pms) are based on compounds with outstanding intrinsic magnetic properties as well as on optimized microstructures and alloy compositions. The most powerful pm materials at present are RE-TM intermetallic alloys which derive their exceptional magnetic properties from the favourable combination of rare earth metals (RE=Nd, Pr, Sm) with transition metals (TM=Fe, Co), in particular magnets based on (Nd,Pr)2Fe14B and Sm2(Co,Cu,Fe,Zr)17. Their development during the last 20 years has involved a dramatic improvement in their performance by a factor of >15 compared with conventional ferrite pms therefore contributing positively to the ever-increasing demand for pms in many (including new) application fields, to the extent that RE-TM pms now account for nearly half of the worldwide market. This review article first gives a brief introduction to the basics of ferromagnetism to confer an insight into the variety of (permanent) magnets, their manufacture and application fields. We then examine the rather complex relationship between the microstructure and the magnetic properties for the two highest-performance and most promising pm materials mentioned. By using numerical micromagnetic simulations on the basis of the Finite Element technique the correlation can be quantitatively predicted, thus providing a powerful tool for the further development of optimized high-performance pms.

  16. Vascular Closure Device Failure: Frequency and Implications

    PubMed Central

    Bangalore, Sripal; Arora, Nipun; Resnic, Frederic S.

    2011-01-01

    Background Vascular closure devices (VCDs) are effective at reducing the time to ambulation for patients undergoing cardiac catheterization procedures, and in reducing the risk of vascular complications in selected patient cohorts. However, the frequency and consequence of failure of VCDs is not well defined. Methods and Results From a prospective registry of consecutive patients undergoing cardiac catheterization at our center, 9823 patients who received either a collagen-plug (Angio-Seal®) based or a suture-based (Perclose®) VCD were selected for the study. VCD failure was defined as unsuccessful deployment or failure to achieve hemostasis. Major vascular complication was defined as any retroperitoneal hemorrhage, limb ischemia, or any surgical repair. Minor vascular complication was defined as any groin bleeding, hematoma (≥ 5 cm), pseudoaneurysm or arteriovenous fistula. ‘Any’ vascular complication was defined as either a major or minor vascular complication. Among the 9823 patients in the study, VCD failed in 268 (2.7%; 2.3% diagnostic vs. 3.0% PCI; P = 0.029) patients. Patients with VCD failure had significantly increased risk of any (6.7% vs. 1.4%; P < 0.0001), major (1.9% vs. 0.6%; P = 0.006) or minor (6.0% vs. 1.1%; P < 0.0001) vascular complication compared with the group with successful deployment of VCD. The increased risk of vascular complication was unchanged in a propensity score matched cohort. Conclusions In contemporary practice, VCD failure is rare but when it does fail, it is associated with significant increase in the risk of vascular complications. Patients with VCD failure should be closely monitored to prevent vascular complications. PMID:20031773

  17. Intrinsic bioremediation modeling to support Superfund site closure

    SciTech Connect

    Bedard, A.H.; Day, M.J.; Johnson, R.H.; Ritter, K.J.; Stancel, S.G.; Thomson, J.A.M.

    1997-09-01

    Closure of the groundwater component of a major Superfund site has been accomplished by a combination of source control, engineered in-situ bioremediation, and subsequent long-term intrinsic bioremediation. Engineered bioremediation outside the source control area resulted in very significant contaminant mass removal. This allowed intrinsic bioremediation to be considered as a passive remedial management method of achieving cleanup objectives after active remediation needed. Modeling demonstrated that intrinsic bioremediation would achieve cleanup objectives (for this site, Federal drinking water standards) within ten years of shutdown of the active bioremediation system. Modeling showed that residual electron acceptors and nutrients distributed in the aquifer during engineered bioremediation greatly enhance the intrinsic bioremediation process. The results of the modeling effort led to the active system being shut down a year ahead of schedule, allowing the project to move into a low-maintenance intrinsic bioremediation and long-term monitoring phase. The modeling demonstration coupled Visual MODFLOW{copyright} and BioTrans{copyright} to simulate groundwater flow, solute transport, and oxygen-limited, multi-species biodegradation. Regional flow evaluation, detailed model sensitivity analyses, and subarea modeling were employed to provide support to model predictions. Predictions will be tested by subsequent progress and compliance monitoring. Site closure began in early 1996.

  18. An eddy closure for potential vorticity

    SciTech Connect

    Ringler, Todd D

    2009-01-01

    The Gent-McWilliams (GM) parameterization is extended to include a direct influence in the momentum equation. The extension is carried out in two stages; an analysis of the inviscid system is followed by an analysis of the viscous system. In the inviscid analysis the momentum equation is modified such that potential vorticity is conserved along particle trajectories following a transport velocity that includes the Bolus velocity in a manner exactly analogous to the continuity and tracer equations. In addition (and in contrast to traditional GM closures), the new formulation of the inviscid momentum equation results in a conservative exchange between potential and kinetic forms of energy. The inviscid form of the eddy closure conserves total energy to within an error proportional to the time derivative of the Bolus velocity. The hypothesis that the viscous term in the momentum equation should give rise to potential vorticity being diffused along isopycnals in a manner analogous to other tracers is examined in detail. While the form of the momentum closure that follows from a strict adherence to this hypothesis is not immediately interpretable within the constructs of traditional momentum closures, three approximations to this hypothesis results in a form of dissipation that is consistent with traditional Laplacian diffusion. The first two approximations are that relative vorticity, not potential vorticity, is diffused along isopyncals and that the flow is in approximate geostrophic balance. An additional approximation to the Jacobian term is required when the dissipation coefficient varies in space. More importantly, the critique of this hypothesis results in the conclusion that the viscosity parameter in the momentum equation should be identical to the tradition GM closure parameter {Kappa}. Overall, we deem the viscous form of the eddy closure for potential vorticity as a viable closure for use in ocean circulation models.

  19. 40 CFR 264.1102 - Closure and post-closure care.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... removing or decontaminating all residues and making all reasonable efforts to effect removal or... closure and post-closure requirements that apply to landfills (§ 264.310). In addition, for the purposes... considered to be a landfill, and the owner or operator must meet all of the requirements for...

  20. 40 CFR 265.1102 - Closure and post-closure care.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    .... (b) If, after removing or decontaminating all residues and making all reasonable efforts to effect... with the closure and post-closure requirements that apply to landfills (§ 265.310). In addition, for... then considered to be a landfill, and the owner or operator must meet all of the requirements...

  1. 40 CFR 264.1102 - Closure and post-closure care.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... removing or decontaminating all residues and making all reasonable efforts to effect removal or... closure and post-closure requirements that apply to landfills (§ 264.310). In addition, for the purposes... considered to be a landfill, and the owner or operator must meet all of the requirements for...

  2. 40 CFR 264.1102 - Closure and post-closure care.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... removing or decontaminating all residues and making all reasonable efforts to effect removal or... closure and post-closure requirements that apply to landfills (§ 264.310). In addition, for the purposes... considered to be a landfill, and the owner or operator must meet all of the requirements for...

  3. 40 CFR 265.1102 - Closure and post-closure care.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    .... (b) If, after removing or decontaminating all residues and making all reasonable efforts to effect... with the closure and post-closure requirements that apply to landfills (§ 265.310). In addition, for... then considered to be a landfill, and the owner or operator must meet all of the requirements...

  4. 40 CFR 265.1102 - Closure and post-closure care.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    .... (b) If, after removing or decontaminating all residues and making all reasonable efforts to effect... with the closure and post-closure requirements that apply to landfills (§ 265.310). In addition, for... then considered to be a landfill, and the owner or operator must meet all of the requirements...

  5. 40 CFR 264.1102 - Closure and post-closure care.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... removing or decontaminating all residues and making all reasonable efforts to effect removal or... closure and post-closure requirements that apply to landfills (§ 264.310). In addition, for the purposes... considered to be a landfill, and the owner or operator must meet all of the requirements for...

  6. 40 CFR 265.1102 - Closure and post-closure care.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    .... (b) If, after removing or decontaminating all residues and making all reasonable efforts to effect... with the closure and post-closure requirements that apply to landfills (§ 265.310). In addition, for... then considered to be a landfill, and the owner or operator must meet all of the requirements...

  7. 40 CFR 264.1102 - Closure and post-closure care.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... removing or decontaminating all residues and making all reasonable efforts to effect removal or... closure and post-closure requirements that apply to landfills (§ 264.310). In addition, for the purposes... considered to be a landfill, and the owner or operator must meet all of the requirements for...

  8. 40 CFR 265.1102 - Closure and post-closure care.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    .... (b) If, after removing or decontaminating all residues and making all reasonable efforts to effect... with the closure and post-closure requirements that apply to landfills (§ 265.310). In addition, for... then considered to be a landfill, and the owner or operator must meet all of the requirements...

  9. Reconsolidation of salt as applied to permanent seals for the Waste Isolation Pilot Plant

    SciTech Connect

    Hansen, F.D.; Callahan, G.D.; Van Sembeek, L.L.

    1993-07-01

    Reconsolidated salt is a fundamental component of the permanent seals for the Waste Isolation Pilot Plant. As regulations are currently understood and seal concepts envisioned, emplaced salt is the sole long-term seal component designed to prevent the shafts from becoming preferred pathways for rating gases or liquids. Studies under way in support of the sealing function of emplaced salt include laboratory testing of crushed salt small-scale in situ tests, constitutive modeling of crushed salt, calculations of the opening responses during operation and closure, and design practicalities including emplacement techniques. This paper briefly summarizes aspects of these efforts and key areas of future work.

  10. New permanent magnets; manganese compounds.

    PubMed

    Coey, J M D

    2014-02-12

    The exponential growth of maximum energy product that prevailed in the 20th century has stalled, leaving a market dominated by two permanent magnet materials, Nd2Fe14B and Ba(Sr)Fe12O19, for which the maximum theoretical energy products differ by an order of magnitude (515 kJ m(-3) and 45 kJ m(-3), respectively). Rather than seeking to improve on optimized Nd-Fe-B, it is suggested that some research efforts should be devoted to developing appropriately priced alternatives with energy products in the range 100-300 kJ m(-3). The prospects for Mn-based hard magnetic materials are discussed, based on known Mn-based compounds with the tetragonal L10 or D022 structure or the hexagonal B81 structure.

  11. Is CO2 ice permanent?

    NASA Technical Reports Server (NTRS)

    Lindner, Bernhard Lee

    1992-01-01

    Carbon dioxide ice has been inferred to exist at the south pole in summertime, but Earth based measurements in 1969 of water vapor in the Martian atmosphere suggest that all CO2 ice sublined from the southern polar cap and exposed underlying water ice. This implies that the observed summertime CO2 ice is of recent origin. It appears possible to construct an energy balance model that maintains seasonal CO2 ice at the south pole year round and still reasonably simulates the polar cap regression and atmospheric pressure data. This implies that the CO2 ice observed in the summertime south polar cap could be seasonal in origin, and that minor changes in climate could cause CO2 ice to completely vanish, as would appear to have happened in 1969. However, further research remains before it is certain whether the CO2 ice observed in the summertime south polar cap is seasonal or is part of a permanent reservoir.

  12. Rare-earth free permanent magnets and permanent magnet synchronous motors

    NASA Astrophysics Data System (ADS)

    Park, Jihoon

    In this dissertation, basic and applied research programs are engaged that range from the fundamental magnetism and magnetic properties of ferro- and ferrimagnetic materials to the design and fabrication of rare earth (RE) free permanent and soft magnetic materials for an interior permanent magnet synchronous motor (IPMSM) (i.e., motor for electric vehicles and plug-in electric vehicles) and heat assisted magnetic recording media (HAMR) with 4 Tb/in 2 information storage applications. The applied research program emphasizes the design and synthesis of new RE-free permanent magnetic materials and magnetic exchange coupled core(hard)-shell(soft) particles to achieve a high maximum energy product [(BH) max], and the design of an advanced IPMSM based on RE free permanent magnets. The electronic structures of hard magnetic materials such as Mn-Al, Mn-Bi, Mn-Bi-X, Fe-Pt, Fe-Pt-X, SrFe12O19, and SrFe12 O19-X (X = transition elements) and soft magnetic materials such as nanocrystalline and Mn-B were calculated based on the density functional theory (DFT), and their exchange coupled magnetic properties with soft magnets were designed according to the size and shape of the particles. The calculated magnetic and electronic properties were used to obtain the temperature dependence of saturation magnetization Ms(T) and anisotropy constant K(T) within the mean field theory. Thereby, the temperature dependence of the maximum energy product [(BH)max(T)] is calculated using the calculated Ms(T) and K(T). The experimental approaches were based on chemical and ceramic processes to synthesize hard and soft magnetic materials. Prior to synthesis, material design parameters were optimized by first-principles calculations and micromagnetic simulations. Lastly, performance of RE-free MnAl, MnBi, SrFe12O19 , and Alnico IPMSMs, designed with the finite element method (FEM), at 23 and 200 °C were evaluated and compared to a RE Nd Fe B IPMSM. The performance parameters include torque

  13. Reaching site closure for groundwater under multiple regulatory agencies

    SciTech Connect

    Glucksberg, N.; Couture, B.

    2007-07-01

    Groundwater at the Connecticut Yankee Atomic Power Company (CYAPCO) Haddam Neck Plant (HNP) has been impacted by both radionuclides and chemical constituents. Furthermore, the cleanup standards and closure requirements for HNP are regulated both by federal and state agencies. The only consistent requirement is the development of a site conceptual model and an understanding of the hydrogeologic conditions that will govern contaminant transport and identify potential receptors. The cleanup criteria to reach site closure for radionuclides is regulated by both the Nuclear Regulatory Commission (NRC) and the Connecticut Department of Environmental Protection (CTDEP) Bureau of Air Management, Radiological Division. For license termination under the NRC, the total effective dose equivalent (TEDE) for all media can not exceed 25 milli-Rem per year (mRem/yr) plus As Low as Reasonably Achievable (ALARA). The CTDEP has a similar requirement with the TEDE not to exceed 19 mRem/yr plus ALARA. To reach these criteria, derived concentration guideline levels (DCGLs) were developed for radiological exposures from three (3) media components; soil, existing groundwater and future groundwater from left-in place foundations or footings. Based on current conditions, the target dose contribution from existing and future groundwater is not to exceed 2 mRem/yr TEDE. After source (soil) remediation is complete, the NRC requires two (2) years of quarterly monitoring to demonstrate that groundwater quality meets the DCGLs and does not show an upward trend. CYAPCO's NRC License Termination Plan (LTP) specifies a minimum 18-month period of groundwater monitoring, as long as samples are collected during two spring/high water seasons, to verify the efficacy of remedial actions at HNP. In addition to the 19 mRem/yr criteria, the CTDEP also requires groundwater to be in compliance with the Remediation Standards Regulation (RSRs). There are no published criteria for radionuclides in the RSRs

  14. A nonlocal fluid closure for antiparallel reconnection

    NASA Astrophysics Data System (ADS)

    Ng, Jonathan; Hakim, A.; Bhattacharjee, A.

    2016-10-01

    The integration of kinetic effects in fluid models is an important problem in global simulations of the Earth's magnetosphere and space weather modelling. In particular, it has been shown that ion kinetics play an important role in the dynamics of large reconnecting systems, and that fluid models can account of some of these effects. Here we introduce a new fluid model and closure for collisionless magnetic reconnection and more general applications. Taking moments of the kinetic equation, we evolve the full pressure tensor for electrons and ions, which includes the off diagonal terms necessary for reconnection. Kinetic effects are recovered by using a nonlocal heat flux closure, which approximates linear Landau damping in the fluid framework. Using the island coalescence problem as a test, we show how the nonlocal ion closure improves on the typical collisional closures used for ten-moment models and circumvents the need for a colllisional free parameter. Finally, we extend the closure to study guide-field reconnection and discuss the implementation of a twenty-moment model. Supported by: NSF Grant No. AGS-1338944, DOE Contract DE-AC02-09CH11466.

  15. Community perceptions of rural hospital closure.

    PubMed

    Muus, K J; Ludtke, R L; Gibbens, B

    1995-02-01

    Hospital closure, a devastating event in the life of small communities, can have long-lasting medical, economic, and psychological consequences. This study focuses on a 1991 closure that occurred in the rural North Dakota town of Beach that left local residents 40 and 61 miles away from the nearest hospitals. Two hundred residents of the hospital's former service area were selected via systematic random sampling to share their perceptions on the causes and effects of closing their local hospital. According to respondents, this hospital closure was caused by a number of influences, with the most commonly cited being under-utilization of services by local residents, exacting government rules and regulations, doleful economic climate, dwindling population, poor and unstable local physician care, and poor management of hospital matters. Findings further indicated that Beach area residents were most concerned with poor access to emergency medical care as a result of the closing. Area dwellers perceived that the hospital closure's aftermath would include the loss of local jobs, further declines in the local economy, the suffering of elderly and children, transportation problems, and out-migration of some area residents. These concerns, coupled with the notable decrease in hospital care access, motivated many area residents to think of solutions to these problems rather than to place blame on others for the closure.

  16. A unified physical model to explain Supercavity closure

    NASA Astrophysics Data System (ADS)

    Arndt, Roger; Karn, Ashish; Hong, Jiarong

    2014-11-01

    An insight into underlying physics behind supercavity closure is an important issue for the operation of underwater vehicles for a number of reasons viz. associated gas flow requirement with each closure regime, effect of cavity closure on the overall cavity behavior and collapse, differences between natural and ventilated supercavity closure etc. There have been several reports on supercavity closure since the 1950s and many empirical relationships governing different closure modes have been proposed by different authors. Yet, there is no universal agreement between results obtained at different experimental facilities. In some cases, contradictory observations have been made. In this talk, systematic investigations conducted into supercavity closure across a wide range of experimental conditions at the Saint Anthony Falls Laboratory (SAFL) are presented. A variety of closure mechanisms were observed including the ones widely reported in the literature, viz. twin vortex, re-entrant jet; new stable closure modes viz. quad vortex and interacting vortex and a host of transition closure modes. A hypothesis on the physical mechanism based on the pressure gradient across the cavity that determines the closure modes is proposed. Using this hypothesis and the control volume analysis at supercavity closure, we explain the observations from SAFL experiments as well as reconcile the observations reported by different researchers. The hypothesis explains the supercavity closure across different experimental facilities, at different blockage ratios and at different flow conditions. Thus, a unified understanding into supercavity closure from the viewpoint of fundamental physics is attempted. Supported by the Office Of Naval Research.

  17. Permanence of Stochastic Lotka-Volterra Systems

    NASA Astrophysics Data System (ADS)

    Liu, Meng; Fan, Meng

    2017-04-01

    This paper proposes a new definition of permanence for stochastic population models, which overcomes some limitations and deficiency of the existing ones. Then, we explore the permanence of two-dimensional stochastic Lotka-Volterra systems in a general setting, which models several different interactions between two species such as cooperation, competition, and predation. Sharp sufficient criteria are established with the help of the Lyapunov direct method and some new techniques. This study reveals that the stochastic noises play an essential role in the permanence and characterize the systems being permanent or not.

  18. Creating eye closure in patients with facial nerve paralysis using an implantable solenoid actuator.

    PubMed

    Hasmat, Shaheen; Lovell, Nigel H; Eviston, Timothy; Ekmejian, Rafael; Suaning, Gregg J; Clark, Jonathan

    2015-08-01

    This paper proposes the use of an implantable solenoid actuator to create a more natural eyelid closure over current lid loading therapies in patients with facial nerve paralysis (FNP). The actuator works by moving a magnet when a solenoid is activated. This is used to tension a sling applied to the upper eyelid which closes the eye. The sling design has been described elsewhere and creating eye closure using it requires a force of 627 (± 128) mN over a movement of approximately 6 mm. The actuator described here was able to successfully achieve these parameters and repeatedly perform eyelid closure in a cadaveric rabbit model. Device limitations and future improvements have also been identified and discussed.

  19. Percutaneous Closure of an Iatrogenic Aorta to Right Ventricle Fistula Acquired Following Intracardiac Repair

    PubMed Central

    Rajasekhar, Durgaprasad; Vanajakshamma, Velam; Ranganayakulu, Kummaraganti Paramathma

    2016-01-01

    Iatrogenic aortocardiac fistulae have been described rarely following intracardiac repair. This 28 year-old-male presented to our facility with dyspnea going on 20 days after closure of ventricular septal defect (VSD) and resection of subaortic membrane. A communication was noticed between the aorta and the right ventricle (RV) upon transthoracic echocardiography. Cardiac catheterisation revealed a significant shunt and an aortogram revealed a 6 mm communication between aorta and right ventricle. Percutaneous closure of this defect was attempted under local anaesthesia through right femoral access. An alpha arteriovenous loop was formed despite repeated attempts, hence a retrograde approach for device delivery was considered. An 8 mm Amplatzer muscular VSD occluder device was deployed across the defect achieving a complete closure through an 8F delivery sheath. To the best of our knowledge this is the first report of an iatrogenic aorta to RV fistula occurring in a patient following an intracardiac repair which has been successfully treated percutaneously. PMID:27274181

  20. Endoscopic vacuum-assisted closure with sponge for esophagotracheal fistula after esophagectomy.

    PubMed

    Lee, Hyun Jik; Lee, Hyuk

    2015-04-01

    We experienced a case of endoscopic vacuum-assisted closure with sponge for esophagotracheal fistula diagnosed after esophagectomy due to squamous cell esophageal cancer. The patient, who had undergone a robotic-assisted thoracoscopic esophagectomy and esophageal reconstruction of the stomach, was referred for the management of esophagotracheal fistula. Diagnostic esophagogastroduodenoscopy and imaging studies were performed, and they indicated anastomotic leakage with esophagotracheal fistula. The patient was treated by the endoscopic placement of full-covered self-expanding metal stents, but the fistula persisted. Then, we applied a size-adjusted sponge endoscopically with continuous suction by a vacuum system in the fistula lesion. Complete closure was achieved without any procedure-related complications. After 40 days, symptomatic esophageal stricture was detected and treated successfully with endoscopic balloon dilation. Endoscopic vacuum-assisted closure with a sponge might be an adequate alternative treatment option for esophageal stenting for esophagotracheal fistula after esophagectomy.

  1. Development of Infrared Phase Closure Capability in the Infrared-Optical Telescope Array (IOTA)

    NASA Technical Reports Server (NTRS)

    Traub, Wesley A.

    2002-01-01

    We completed all major fabrication and testing for the third telescope and phase-closure operation at the Infrared-Optical Telescope Array (IOTA) during this period. In particular we successfully tested the phase-closure operation, using a laboratory light source illuminating the full delay-line optical paths, and using an integrated-optic beam combiner coupled to our Picnic-detector camera. This demonstration is an important and near-final milestone achievement. As of this writing, however, several tasks yet remain, owing to development snags and weather, so the final proof of success, phase-closure observation of a star, is now expected to occur in early 2002, soon after this report has been submitted.

  2. Closure device for lead-acid batteries

    DOEpatents

    Ledjeff, Konstantin

    1983-01-01

    A closure device for lead-acid batteries includes a filter of granulated activated carbon treated to be hydrophobic combined with means for preventing explosion of emitted hydrogen and oxygen gas. The explosion prevention means includes a vertical open-end tube within the closure housing for maintaining a liquid level above side wall openings in an adjacent closed end tube. Gases vent from the battery through a nozzle directed inside the closed end tube against an impingement surface to remove acid droplets. The gases then flow through the side wall openings and the liquid level to quench any possible ignition prior to entering the activated carbon filter. A wick in the activated carbon filter conducts condensed liquid back to the closure housing to replenish the liquid level limited by the open-end tube.

  3. Hanford Patrol Academy demolition sites closure plan

    SciTech Connect

    Not Available

    1993-09-30

    The Hanford Site is owned by the U.S. Government and operated by the U.S. Department of Energy, Richland Operations Office. Westinghouse Hanford Company is a major contractor to the U.S. Department of Energy, Richland Operations Office and serves as co-operator of the Hanford Patrol Academy Demolition Sites, the unit addressed in this paper. This document consists of a Hanford Facility Dangerous Waste Part A Permit Application, Form 3 (Revision 4), and a closure plan for the site. An explanation of the Part A Form 3 submitted with this closure plan is provided at the beginning of the Part A section. This Hanford Patrol Academy Demolition Sites Closure Plan submittal contains information current as of December 15, 1994.

  4. Biological constraints do not entail cognitive closure.

    PubMed

    Vlerick, Michael

    2014-12-01

    From the premise that our biology imposes cognitive constraints on our epistemic activities, a series of prominent authors--most notably Fodor, Chomsky and McGinn--have argued that we are cognitively closed to certain aspects and properties of the world. Cognitive constraints, they argue, entail cognitive closure. I argue that this is not the case. More precisely, I detect two unwarranted conflations at the core of arguments deriving closure from constraints. The first is a conflation of what I will refer to as 'representation' and 'object of representation'. The second confuses the cognitive scope of the assisted mind for that of the unassisted mind. Cognitive closure, I conclude, cannot be established from pointing out the (uncontroversial) existence of cognitive constraints.

  5. Quantifying dorsal closure in three dimensions

    PubMed Central

    Lu, Heng; Sokolow, Adam; Kiehart, Daniel P.; Edwards, Glenn S.

    2016-01-01

    Dorsal closure is an essential stage of Drosophila embryogenesis and is a powerful model system for morphogenesis, wound healing, and tissue biomechanics. During closure, two flanks of lateral epidermis close an eye-shaped dorsal opening that is filled with amnioserosa. The two flanks of lateral epidermis are zipped together at each canthus (“corner” of the eye). Actomyosin-rich purse strings are localized at each of the two leading edges of lateral epidermis (“lids” of the eye). Here we report that each purse string indents the dorsal surface at each leading edge. The amnioserosa tissue bulges outward during the early-to-mid stages of closure to form a remarkably smooth, asymmetric dome indicative of an isotropic and uniform surface tension. Internal pressure of the embryo and tissue elastic properties help to shape the dorsal surface. PMID:27798232

  6. APPARATUS AND METHOD FOR WELDING END CLOSURE TO CONTAINER

    DOEpatents

    Frantz, C.E.; Correy, T.B.

    1959-08-01

    A semi-automatic apparatus is described for welding a closure to the open end of a can containing a nuclear fuel slug. An arc is struck at the center of the closure and is shifted to a region near its periphery. Then the assembly of closure, can, and fuel slug is rotated so that the peripheral region of the closure is preheated. Next the arc is shifted to the periphery itself of the closure, and the assembly is rotated so that the closure is welded to the can.

  7. Single clips versus multi-firing clip device for closure of mucosal incisions after peroral endoscopic myotomy (POEM)

    PubMed Central

    Verlaan, Tessa; Ponds, Fraukje A. M.; Bastiaansen, Barbara A. J.; Bredenoord, Albert J.; Fockens, Paul

    2016-01-01

    Background and aims: After Peroral Endoscopic Myotomy (POEM), the mucosal incision is closed with endoscopically applied clips. After each clip placement, a subsequent clipping device has to be introduced through the working channel. With the Clipmaster3, three consecutive clips can be placed without reloading which could reduce closure time. We performed a prospective study evaluating efficacy, safety, and ease of use. Closure using Clipmaster3 was compared to closure with standard clips. Methods: Patients undergoing closure with the Clipmaster3 were compared to patients who underwent POEM with standard clip closure. Results: In total, 12 consecutive POEM closures with Clipmaster3 were compared to 24 standard POEM procedures. The Clipmaster3 and the standard group did not differ in sex distribution, age (42 years [29 – 49] vs 41 years [34 – 54] P = 0.379), achalasia subtype, disease duration, length of the mucosal incision (25.0 mm [20 – 30] vs 20.0 mm [20 – 30], P = 1.0), and closure time (622 seconds [438 – 909] vs 599 seconds [488 – 664] P = 0.72). Endoscopically successful closure could be performed in all patients. The proportion of all clips used that were either displaced or discarded was larger for Clipmaster3 (8.8 %) compared to standard closure (2.0 %, P  = 0.00782). Ease of handling VAS (visual analogue scale) score for Clipmaster3 did not differ between endoscopist and endoscopy nurse (7 out of 10). Conclusions: Clipmaster3 is feasible and safe for closure of mucosal incisions after POEM. Clipmaster3 was not associated with reduced closure time. Compared to standard closure, more Clipmaster3 clips were displaced or discarded to achieve successful closure. A training effect cannot be excluded as a cause of these results. Study registration: NCT01405417 PMID:27747277

  8. How the Lean Management System is Working on a Closure Project - 13242

    SciTech Connect

    Mowery, Carol

    2013-07-01

    Washington Closure Hanford, LLC (WCH) manages the River Corridor Closure Project (RCCP), a 10-year contract, in which WCH will clean up 220 mi{sup 2} of contaminated land at the Hanford Site in Richland, Washington. Strategic planning sessions in 2009 identified key performance areas that were essential to closure and in which focused change could result in dramatic performance improvement. Lean Management Systems (Lean) was selected as the methodology to achieve the desired results. The Lean Process is built upon the fundamentals of the power of respect for people and the practice of continuous process improvement. Lean uses week-long, focused sessions that teach a selected team the techniques to recognize waste within their own work processes, propose potential solutions, and then conduct experiments during the week to test their solutions. In 2011, the Lean process was implemented in the Waste Operations organization. From there it was expanded to closure documents, field remediation, and decommissioning and demolition. WCH identified the following Lean focus areas: 1) closure document processes that required extensive internal preparation, and lengthy external review and approval cycles; 2) allocation of limited transportation and waste disposal resources to meet aggressive remediation schedules; 3) effective start-of-the-day routines in field operations; 4) improved excavation and load-out processes; and 5) approaches to strengthen safety culture and support disciplined operations. Since the introduction of Lean, RCCP has realized many successes and also gained some unexpected benefits. (authors)

  9. Gastrotomy closure with a new tissue anchoring device: A porcine survival study

    PubMed Central

    Guarner-Argente, Carlos; Córdova, Henry; Martínez-Pallí, Graciela; Navarro-Ripoll, Ricard; Rodríguez-d’Jesús, Antonio; de Miguel, Cristina Rodríguez; Beltrán, Mireia; Fernández-Esparrach, Gloria

    2011-01-01

    AIM: To evaluate the feasibility, reproducibility and efficacy of a new tissue anchoring device in a porcine survival model. METHODS: Gastrotomies were performed using a needle-knife and balloon dilator in 10 female Yorkshire pigs weighing 30-35 kg. Gastric closure was attempted using a new tissue anchoring device. The tightness of the closure was confirmed by means of air insufflation and the ability to maintain gastric distension with stability in peritoneal pressure measured with a Veress needle. All animals were monitored daily for signs of peritonitis and sepsis over 14 d. During necropsy, the peritoneal cavity and the gastric access site were examined. RESULTS: Transgastric access, closure and 14 d survival was achieved in all pigs. The mean closure time was 18.1 ± 19.2 min and a mean of 2.1 ± 1 devices were used. Supplementary clips were necessary in 2 cases. The closure time was progressively reduced (24.8 ± 13.9 min in the first 5 pigs vs 11.4 ± 5.9 min in the last 5, P = NS). At necropsy, the gastric access site was correctly closed in all cases with all brace-bars present. One device was misplaced in the mesocolon. Minimal adhesions were observed in 3 pigs and signs of mild peritonitis and adhesions in one. CONCLUSIONS: The use of this new tissue anchoring device in porcine stomachs is feasible, reproducible and effective and requires a short learning curve. PMID:21483634

  10. Final Clean Closure Report Site 300 Surface Impoundments Closure Lawrence Livermore National Laboratory Livermore, California

    SciTech Connect

    Haskell, K

    2006-02-14

    Lawrence Livermore National Laboratory operated two Class II surface impoundments that stored wastewater that was discharged from a number of buildings located on the Site 300 Facility (Site 300). The wastewater was the by-product of explosives processing. Reduction in the volume of water discharged from these buildings over the past several years significantly reduced the wastewater storage needs. In addition, the impoundments were constructed in 1984, and the high-density polyethylene (HDPE) geomembrane liners were nearing the end of their service life. The purpose of this project was to clean close the surface impoundments and provide new wastewater storage using above ground storage tanks at six locations. The tanks were installed and put into service prior to closure of the impoundments. This Clean Closure Report (Closure Report) complies with State Water Resources Control Board (SWRCB) Section 21400 of the California Code of Regulations Title 27 (27 CCR section 21400). As required by these regulations and guidance, this Closure Report provides the following information: (1) a brief site description; (2) the regulatory requirements relevant to clean closure of the impoundments; (3) the closure procedures; and (4) the findings and documentation of clean closure.

  11. Too much vacuum-assisted closure.

    PubMed

    Dieu, Tam; Leung, Michael; Leong, James; Morrison, Wayne; Cleland, Heather; Archer, Brett; Oppy, Andrew

    2003-12-01

    There has been an explosion in the use of the vacuum-assisted closure device since 1997. Selectively and judiciously used, it is a valuable tool. However, we are concerned by the expanding list of 'indications' for its use. Prolonged applications, frequently several weeks, at the expense of early surgical reconstruction, might compromise the outcome in selected cases. We report four cases that illustrate this problem and stress the importance of timely surgical reconstruction utilizing the range of reconstructive techniques available as well as vacuum-assisted closure dressing.

  12. Ion closure theory for high collisionality revisited

    SciTech Connect

    Ji, Jeong-Young Held, Eric D.

    2015-06-15

    According to analytical calculations of the ion collision operator, the ion-electron collision terms could be larger than the ion-ion collision terms. In the previous work [J.-Y. Ji and E. D. Held, Phys. Plasmas 20, 042114 (2013)], the ion-electron collision effects are diminished by the ion temperature change terms introduced from unlikely assumptions. In this work, the high-collisionality closures for ions are calculated without the temperature change terms. The ion-electron collision terms significantly modify existing closure coefficients.

  13. Closure properties of Watson-Crick grammars

    NASA Astrophysics Data System (ADS)

    Zulkufli, Nurul Liyana binti Mohamad; Turaev, Sherzod; Tamrin, Mohd Izzuddin Mohd; Azeddine, Messikh

    2015-12-01

    In this paper, we define Watson-Crick context-free grammars, as an extension of Watson-Crick regular grammars and Watson-Crick linear grammars with context-free grammar rules. We show the relation of Watson-Crick (regular and linear) grammars to the sticker systems, and study some of the important closure properties of the Watson-Crick grammars. We establish that the Watson-Crick regular grammars are closed under almost all of the main closure operations, while the differences between other Watson-Crick grammars with their corresponding Chomsky grammars depend on the computational power of the Watson-Crick grammars which still need to be studied.

  14. Tensile strength of wound closure with cyanoacrylate glue.

    PubMed

    Shapiro, A J; Dinsmore, R C; North, J H

    2001-11-01

    2-Octyl cyanoacrylate tissue adhesive is increasingly being used for closure of traumatic lacerations. Data regarding the strength of incisions closed with 2-octyl cyanoacrylate are limited. We compared the strength of disruption of closure with glue with that of more conventional methods of wound closure. Segments of fresh porcine skin measuring 3.5 x 10 cm were approximated by one of four methods: 1) 2-octyl cyanoacrylate glue, 2) surgical staples, 3) 0.5 inch Steri-Strips, and 4) interrupted 4-0 poliglecaprone 25 sutures in a subcuticular fashion. Fifteen specimens were used to test each type of closure. The strength of closure was tested on an Instron 4502 tensionometer. The peak force required for disruption of the closure was recorded and the strength of the closure was compared. Staples provided the strongest closure. Skin glue proved superior to Steri-Strips but inferior to stapled closure. The difference between skin glue and suture closure was not statistically significant (P = 0.12). Patterns of failure differed between the groups. Skin glue failed because of disruption of the skin-glue interface. 2-Octyl cyanoacrylate glue provides a wound closure that is similar to closure with an interrupted subcuticular absorbable suture. This study validates the clinical use of skin glue for closure of surgical incisions. The technique should be used with caution in areas of the body that are subject to tension.

  15. Biogeochemical Changes at Early Stage After the Closure of Radioactive Waste Geological Repository in South Korea

    SciTech Connect

    Choung, Sungwook; Um, Wooyong; Choi, Seho; Francis, Arokiasamy J.; Kim, Sungpyo; Park, Jin beak; Kim, Suk-Hoon

    2014-09-01

    Permanent disposal of low- and intermediate-level radioactive wastes in the subterranean environment has been the preferred method of many countries, including Korea. A safety issue after the closure of a geological repository is that biodegradation of organic materials due to microbial activities generates gases that lead to overpressure of the waste containers in the repository and its disintegration with the release of radionuclides. As part of an ongoing large-scale in situ experiment using organic wastes and groundwater to simulate geological radioactive waste repository conditions, we investigated the geochemical alteration and microbial activities at an early stage (~63 days) intended to be representative of the initial period after repository closure. The increased numbers of both aerobes and facultative anaerobes in waste effluents indicate that oxygen content could be the most significant parameter to control biogeochemical conditions at very early periods of reaction (<35 days). Accordingly, the values of dissolved oxygen and redox potential were decreased. The activation of anaerobes after 35 days was supported by the increased concentration to ~50 mg L-1 of ethanol. These results suggest that the biogeochemical conditions were rapidly altered to more reducing and anaerobic conditions within the initial 2 months after repository closure. Although no gases were detected during the study, activated anaerobic microbes will play more important role in gas generation over the long term.

  16. TECHNICAL PEER REVIEW REPORT - YUCCA MOUNTAIN: WASTE PACKAGE CLOSURE CONTROL SYSTEM

    SciTech Connect

    NA

    2005-10-25

    The objective of the Waste Package Closure System (WPCS) project is to assist in the disposal of spent nuclear fuel (SNF) and associated high-level wastes (HLW) at the Yucca Mountain site in Nevada. Materials will be transferred from the casks into a waste package (WP), sealed, and placed into the underground facility. The SNF/HLW transfer and closure operations will be performed in an aboveground facility. The objective of the Control System is to bring together major components of the entire WPCS ensuring that unit operations correctly receive, and respond to, commands and requests for data. Integrated control systems will be provided to ensure that all operations can be performed remotely. Maintenance on equipment may be done using hands-on or remote methods, depending on complexity, exposure, and ease of access. Operating parameters and nondestructive examination results will be collected and stored as permanent electronic records. Minor weld repairs must be performed within the closure cell if the welds do not meet the inspection acceptance requirements. Any WP with extensive weld defects that require lids to be removed will be moved to the remediation facility for repair.

  17. 22 CFR 401.3 - Permanent offices.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... Relations INTERNATIONAL JOINT COMMISSION, UNITED STATES AND CANADA RULES OF PROCEDURE General § 401.3 Permanent offices. The permanent offices of the Commission shall be at Washington, in the District of... of the Commission shall have full charge and control of said offices, respectively....

  18. 22 CFR 401.3 - Permanent offices.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... Relations INTERNATIONAL JOINT COMMISSION, UNITED STATES AND CANADA RULES OF PROCEDURE General § 401.3 Permanent offices. The permanent offices of the Commission shall be at Washington, in the District of... of the Commission shall have full charge and control of said offices, respectively....

  19. 22 CFR 401.3 - Permanent offices.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... Relations INTERNATIONAL JOINT COMMISSION, UNITED STATES AND CANADA RULES OF PROCEDURE General § 401.3 Permanent offices. The permanent offices of the Commission shall be at Washington, in the District of... of the Commission shall have full charge and control of said offices, respectively....

  20. 22 CFR 401.3 - Permanent offices.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... Relations INTERNATIONAL JOINT COMMISSION, UNITED STATES AND CANADA RULES OF PROCEDURE General § 401.3 Permanent offices. The permanent offices of the Commission shall be at Washington, in the District of... of the Commission shall have full charge and control of said offices, respectively....

  1. 22 CFR 401.3 - Permanent offices.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... Relations INTERNATIONAL JOINT COMMISSION, UNITED STATES AND CANADA RULES OF PROCEDURE General § 401.3 Permanent offices. The permanent offices of the Commission shall be at Washington, in the District of... of the Commission shall have full charge and control of said offices, respectively....

  2. First permanent molars with molar incisor hypomineralisation.

    PubMed

    Fitzpatrick, Laura; O'Connell, Anne

    2007-01-01

    Molar incisor hypomineralisation (MIH) is a common enamel defect presenting in the first permanent molars (FPM) and permanent incisors. This article presents the clinical findings and management considerations for the FPM with MIH to the general practitioner. The various treatment options are described with emphasis placed on early diagnosis as the most important prognostic factor.

  3. PREFORMED METAL CROWNS FOR THE PERMANENT DENTITION.

    PubMed

    Millar, Lynsey M; Cairns, Alison M; Fowler, Lauren

    2015-11-01

    Preformed metal crowns have a range of uses in paediatric dentistry in both the primary and permanent dentition. This article provides an overview of their use in permanent teeth, including teeth that have been affected by molar incisor hypomineralisation, caries, developmental defects and tooth surface loss. The indications for use are described, along with the clinical technique for placement

  4. Photovoltaic-wind hybrid system for permanent magnet DC motor

    NASA Astrophysics Data System (ADS)

    Nasir, M. N. M.; Lada, M. Y.; Baharom, M. F.; Jaafar, H. I.; Ramani, A. N.; Sulaima, M. F.

    2015-05-01

    Hybrid system of Photovoltaic (PV) - Wind turbine (WT) generation has more advantages and reliable compared to PV or wind turbine system alone. The aim of this paper is to model and design hybrid system of PV-WT supplying 100W permanent-magnet dc motor. To achieve the objective, both of PV and WT are connected to converter in order to get the same source of DC supply. Then both sources were combined and straightly connected to 100W permanent magnet dc motor. All the works in this paper is only applied in circuit simulator by using Matlab Simulink. The output produced from each converter is expected to be suit to the motor specification. The output produced from each renewable energy system is as expected to be high as it can support the motor if one of them is breakdown

  5. Rational design of the exchange-spring permanent magnet.

    PubMed

    Jiang, J S; Bader, S D

    2014-02-12

    The development of the optimal exchange-spring permanent magnet balances exchange hardening, magnetization enhancement, and the feasibility of scalable fabrication. These requirements can be met with a rational design of the microstructural characteristics. The magnetization processes in several model exchange-spring structures with different geometries have been analyzed with both micromagnetic simulations and nucleation theory. The multilayer geometry and the soft-cylinders-in-hard-matrix geometry have the highest achievable figure of merit (BH)max, while the soft-spheres-in-hard-matrix geometry has the lowest upper limit for (BH)max. The cylindrical geometry permits the soft phase to be larger and does not require strict size control. Exchange-spring permanent magnets based on the cylindrical geometry may be amenable to scaled-up fabrication.

  6. Finite element modeling of permanent magnet devices

    NASA Astrophysics Data System (ADS)

    Brauer, J. R.; Larkin, L. A.; Overbye, V. D.

    1984-03-01

    New techniques are presented for finite element modeling of permanent magnets in magnetic devices such as motors and generators. These techniques extend a previous sheet-current permanent magnet model that applies only for straight line B-H loops and rectangular-shaped magnets. Here Maxwell's equations are used to derive the model of a permanent magnet having a general curved B-H loop and any geometric shape. The model enables a nonlinear magnetic finite element program to use Newton-Raphson iteration to solve for saturable magnetic fields in a wide variety of devices containing permanent magnets and steels. The techniques are applied to a brushless dc motor with irregular-shaped permanent magnets. The calculated motor torque agrees well with measured torque.

  7. Permanent magnet multipole with adjustable strength

    DOEpatents

    Halbach, Klaus

    1985-01-01

    Two or more magnetically soft pole pieces are symmetrically positioned along a longitudinal axis to provide a magnetic field within a space defined by the pole pieces. Two or more permanent magnets are mounted to an external magnetically-soft cylindrical sleeve which rotates to bring the permanent magnets into closer coupling with the pole pieces and thereby adjustably control the field strength of the magnetic field produced in the space defined by the pole pieces. The permanent magnets are preferably formed of rare earth cobalt (REC) material which has a high remanent magnetic field and a strong coercive force. The pole pieces and the permanent magnets have corresponding cylindrical surfaces which are positionable with respect to each other to vary the coupling therebetween. Auxiliary permanent magnets are provided between the pole pieces to provide additional magnetic flux to the magnetic field without saturating the pole pieces.

  8. Permanent-magnet multipole with adjustable strength

    DOEpatents

    Halbach, K.

    1982-09-20

    Two or more magnetically soft pole pieces are symmetrically positioned along a longitudinal axis to provide a magnetic field within a space defined by the pole pieces. Two or more permanent magnets are mounted to an external magnetically-soft cylindrical sleeve which rotates to bring the permanent magnets into closer coupling with the pole pieces and thereby adjustably control the field strength of the magnetic field produced in the space defined by the pole pieces. The permanent magnets are preferably formed of rare earth cobalt (REC) material which has a high remanent magnetic field and a strong coercive force. The pole pieces and the permanent magnets have corresponding cylindrical surfaces which are positionable with respect to each other to vary the coupling there between. Auxiliary permanent magnets are provided between the pole pieces to provide additional magnetic flux to the magnetic field without saturating the pole pieces.

  9. Gating of Permanent Molds for ALuminum Casting

    SciTech Connect

    David Schwam; John F. Wallace; Tom Engle; Qingming Chang

    2004-03-30

    This report summarizes a two-year project, DE-FC07-01ID13983 that concerns the gating of aluminum castings in permanent molds. The main goal of the project is to improve the quality of aluminum castings produced in permanent molds. The approach taken was determine how the vertical type gating systems used for permanent mold castings can be designed to fill the mold cavity with a minimum of damage to the quality of the resulting casting. It is evident that somewhat different systems are preferred for different shapes and sizes of aluminum castings. The main problems caused by improper gating are entrained aluminum oxide films and entrapped gas. The project highlights the characteristic features of gating systems used in permanent mold aluminum foundries and recommends gating procedures designed to avoid common defects. The study also provides direct evidence on the filling pattern and heat flow behavior in permanent mold castings.

  10. Leadership in a (permanent) crisis.

    PubMed

    Heifetz, Ronald; Grashow, Alexander; Linsky, Marty

    2009-01-01

    The current economic crisis is not just another rough spell. Today's mix of urgency, high stakes, and uncertainty will continue even after the recession ends. The immediate crisis--which we will get through with policy makers' expert technical adjustments--sets the stage for a sustained, or even permanent, crisis, a relentless series of challenges no one has encountered before. Instead of hunkering down and relying on their familiar expertise to deal with the sustained crisis, people in positions of authority--whether they are CEOs or managers heading up a company initiative--must practice what the authors call adaptive leadership. They must, of course, tackle the underlying causes of the crisis, but they must also simultaneously make the changes that will allow their organizations to thrive in turbulent environments. Adaptive leadership is an improvisational and experimental art, requiring some new practices. Like Julie Gilbert, who overcame internal resistance to reorient Best Buy toward female purchasers, adaptive leaders get things done to meet today's challenges and then modify those things to thrive in tomorrow's world. They also embrace disequilibrium, using turbulence as an opportunity to build crucial new capacities, as Paul Levy did to rescue Beth Israel Deaconess Medical Center from a profound financial crisis. Finally, adaptive leaders, such as Egon Zehnder, the founder of an executive search firm, draw out the leadership skills that reside deep in the organization, recognizing the interdependence of all employees and mobilizing everyone to generate solutions.

  11. VASCULAR CLOSURE DEVICE FAILURE IN CONTEMPORARY PRACTICE

    PubMed Central

    Vidi, Venkatesan D.; Matheny, Michael E.; Govindarajulu, Usha S.; Normand, Sharon-Lise T.; Robbins, Susan L.; Agarwal, Vikram V.; Bangalore, Sripal; Resnic, Frederic S.

    2012-01-01

    Objectives To assess the frequency and predictors of vascular closure device (VCD) deployment failure, and its association with vascular complications of three commonly used VCDs. Background VCDs are commonly used following percutaneous coronary intervention (PCI) on the basis of studies demonstrating reduced time to ambulation, increased patient comfort, and possible reduction in vascular complications as compared to manual compression. However, limited data are available on the frequency and predictors of VCD failure, and the association of deployment failure with vascular complications. Methods From a de-identified dataset provided by Massachusetts Department of Health, 23,813 consecutive interventional coronary procedures that used either a collagen plug-based (n=18,533) or nitinol clip-based (n=2,284) or suture-based (n=2,996) VCD between 06/2005 and 12/2007 were identified. We defined VCD failure as unsuccessful deployment or failure to achieve immediate access site hemostasis. Results Among 23,813 procedures, VCD failed in 781 (3.3%) procedures (2.1% of collagen plug-based, 6.1% of suture-based, 9.5% of nitinol clip-based). Patients with VCD failure had excess risk of ‘any’ (7.7% versus 2.8%; P<0.001), major (3.3% versus 0.8%; P<0.001), or minor (5.8% versus 2.1%; P<0.001) vascular complications compared with successful VCD deployment. In a propensity-score adjusted analysis, when compared with collagen plug-based VCD (Reference OR =1.0), nitinol clip-based VCD had 2-fold increased risk (OR 2.0, 95% CI: 1.8–2.3, p<0.001) and suture-based VCD had 1.25-fold increased risk (OR 1.25, 95% CI: 1.2–1.3, p<0.001) for VCD failure. VCD failure was a significant predictor of subsequent vascular complications for both collagen plug-based VCD and nitinol clip-based VCD, but not for suture-based VCD. Conclusion VCD failure rates vary depending upon the types of VCD used and are associated with significantly higher vascular complications as compared to deployment

  12. Microwave Tissue Soldering for Immediate Wound Closure

    NASA Technical Reports Server (NTRS)

    Arndt, G. Dickey; Ngo, Phong H.; Plan, Chau T.; Byerly, Diane; Dusl, John; Sognier, Marguerite A.

    2011-01-01

    A novel approach for the immediate sealing of traumatic wounds is under development. A portable microwave generator and handheld antenna are used to seal wounds, binding the edges of the wound together using a biodegradable protein sealant or solder. This method could be used for repairing wounds in emergency settings, by restoring the wound surface to its original strength within minutes. This technique could also be utilized for surgical purposes involving solid visceral organs (i.e., liver, spleen, and kidney) that currently do not respond well to ordinary surgical procedures. A miniaturized microwave generator and a handheld antenna are used to deliver microwave energy to the protein solder, which is applied to the wound. The antenna can be of several alternative designs optimized for placement either in contact with or proximity to the protein solder covering the wound. In either case, optimization of the design includes the matching of impedances to maximize the energy delivered to the protein solder and wound at a chosen frequency. For certain applications, an antenna could be designed that would emit power only when it is in direct contact with the wound. The optimum frequency or frequencies for a specific application would depend on the required depth of penetration of the microwave energy. In fact, a computational simulation for each specific application could be performed, which would then match the characteristics of the antenna with the protein solder and tissue to best effect wound closure. An additional area of interest with potential benefit that remains to be validated is whether microwave energy can effectively kill bacteria in and around the wound. Thus, this may be an efficient method for simultaneously sterilizing and closing wounds. Using microwave energy to seal wounds has a number of advantages over lasers, which are currently in experimental use in some hospitals. Laser tissue welding is unsuitable for emergency use because its large, bulky

  13. 78 FR 20625 - Extension of Hearing Record Closure Date

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-04-05

    ... From the Federal Register Online via the Government Publishing Office DEFENSE NUCLEAR FACILITIES SAFETY BOARD Extension of Hearing Record Closure Date AGENCY: Defense Nuclear Facilities Safety Board. ACTION: Extension of hearing record closure date. SUMMARY: The Defense Nuclear Facilities Safety...

  14. 49 CFR 179.100-17 - Closures for openings.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... TANK CARS Specifications for Pressure Tank Car Tanks (Classes DOT-105, 109, 112, 114 and 120) § 179.100-17 Closures for openings. (a) Closures shall be of approved design and made of metal not subject...

  15. 78 FR 1206 - Second Extension of Hearing Record Closure Date

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-01-08

    ... From the Federal Register Online via the Government Publishing Office DEFENSE NUCLEAR FACILITIES SAFETY BOARD Second Extension of Hearing Record Closure Date AGENCY: Defense Nuclear Facilities Safety Board. ACTION: Second extension of hearing record closure date. SUMMARY: The Defense Nuclear...

  16. 105-DR Large Sodium Fire Facility closure activities evaluation report

    SciTech Connect

    Adler, J.G.

    1996-04-11

    This report evaluates the closure activities at the 105-DR Large Sodium Fire Facility. The evaluation compares these activities to the regulatory requirements and closure plan requirements. The report concludes that the areas identified in the closure plan can be clean closed. This report summarizes and evaluates the closure activities performed in support of partial closure of the 105-DR Large Sodium Fire Facility (LSFF). This evaluation will be used in assessing the condition of the 105-DR LSFF for the purpose of meeting the partial clean closure conditions described in the 105-DR Large Sodium Fire Facility Closure Plan (DOE-RL 1995). Based on the evaluation of the decontamination activities, sampling activities, and sample data, it is has been determined that the partial clean closure conditions for the 105-DR LSFF have been met.

  17. Scalping of light volatile sulfur compounds by wine closures.

    PubMed

    Silva, Maria A; Jourdes, Michaël; Darriet, Philippe; Teissedre, Pierre-Louis

    2012-11-07

    Closures have an important influence on wine quality during aging in a bottle. Closures have a direct impact on oxygen exposure and on volatiles scavenging in wine. Model wine solution soaking assays of several types of closures (i.e., natural and technical cork stoppers, synthetic closures, screw caps) with two important wine volatile sulfur compounds led to a considerable reduction in their levels. After 25 days, cork closures and synthetic closures, to a lesser extent, have significantly scavenged hydrogen sulfide and dimethyl sulfide. These compounds have a determinant impact on wine aging bouquet, being largely responsible for "reduced off-flavors". Hydrogen sulfide levels are often not well correlated with the exposure of wine to oxygen or with the permeability of the closure. Its preferential sorption by some types of closures may explain that behavior. Scalping phenomenon should be taken into account when studying wine post-bottling development.

  18. 300 Area Process Trenches Closure Plan

    SciTech Connect

    Luke, S.N.

    1994-08-15

    Since 1987, Westinghouse Hanford Company has been a major contractor to the US Department of Energy, Richland Operations Office and has served as co-operator of the 300 Area Process Trenches, the waste management unit addressed in this closure plan. For the purposes of the Resource Conservation and Recovery Act, Westinghouse Hanford Company is identified as ``co-operator.`` The 300 Area Process Trenches Closure Plan (Revision 0) consists of a Resource Conservation and Recovery Act Part A Dangerous Waste Permit Application, Form 3 and a Resource Conservation and Recovery Act Closure Plan. An explanation of the Part A Permit Application, Form 3 submitted with this document is provided at the beginning of the Part A Section. The closure plan consists of nine chapters and six appendices. The 300 Area Process Trenches received dangerous waste discharges from research and development laboratories in the 300 Area and from fuels fabrication processes. This waste consisted of state-only toxic (WT02), corrosive (D002), chromium (D007), spent halogenated solvents (F001, F002, and F003), and spent nonhalogented solvent (F005). Accurate records are unavailable concerning the amount of dangerous waste discharged to the trenches. The estimated annual quantity of waste (item IV.B) reflects the total quantity of both regulated and nonregulated waste water that was discharged to the unit.

  19. 40 CFR 258.60 - Closure criteria.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... environment. (c) The owner or operator must prepare a written closure plan that describes the steps necessary to close all MSWLF units at any point during their active life in accordance with the cover design... requiring a final cover as required under § 258.60(a) at any time during the active life; (3) An estimate...

  20. Academic Program Closures: A Legal Compendium.

    ERIC Educational Resources Information Center

    Houpt, Corinne A., Ed.

    The materials in this compendium are intended to assist counsel and administrators at institutions of higher education faced with the need to consider and plan for program closures. Some materials also deal with the closely related issues of financial exigency, faculty reductions, and reductions in force. Section I offers the following papers:…

  1. Closure: It's More than Just Lining Up

    ERIC Educational Resources Information Center

    Duncan, Charles A.; Clemons, James M.

    2012-01-01

    The value of effective lesson planning for optimized learning is a well researched and established concept in education. Although different formats exist for lesson planning, most contain common components, including a structured ending. One common term for a planned ending to a lesson is closure. Unfortunately, not all lessons are well planned…

  2. 50 CFR 635.28 - Closures.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... closure, NMFS will also take into consideration the criteria specified in § 635.27(a)(8). (b) Sharks. (1... for the shark species or complexes specified in § 635.27(b)(1) will remain open. (2) When NMFS calculates that the landings for the shark species or complexes, as specified in § 635.27(b)(1), has...

  3. RECENT PROGRESS IN DOE WASTE TANK CLOSURE

    SciTech Connect

    Langton, C

    2008-02-01

    The USDOE complex currently has over 330 underground storage tanks that have been used to process and store radioactive waste generated from the production of weapons materials. These tanks contain over 380 million liters of high-level and low-level radioactive waste. The waste consists of radioactively contaminated sludge, supernate, salt cake or calcine. Most of the waste exists at four USDOE locations, the Hanford Site, the Savannah River Site, the Idaho Nuclear Technology and Engineering Center and the West Valley Demonstration Project. A summary of the DOE tank closure activities was first issued in 2001. Since then, regulatory changes have taken place that affect some of the sites and considerable progress has been made in closing tanks. This paper presents an overview of the current regulatory changes and drivers and a summary of the progress in tank closures at the various sites over the intervening six years. A number of areas are addressed including closure strategies, characterization of bulk waste and residual heel material, waste removal technologies for bulk waste, heel residuals and annuli, tank fill materials, closure system modeling and performance assessment programs, lessons learned, and external reviews.

  4. YUCCA MOUNTAIN WASTE PACKAGE CLOSURE SYSTEM

    SciTech Connect

    G. Housley; C. Shelton-davis; K. Skinner

    2005-08-26

    The method selected for dealing with spent nuclear fuel in the US is to seal the fuel in waste packages and then to place them in an underground repository at the Yucca Mountain Site in Nevada. This article describes the Waste Package Closure System (WPCS) currently being designed for sealing the waste packages.

  5. 50 CFR 648.121 - Closures.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 50 Wildlife and Fisheries 8 2010-10-01 2010-10-01 false Closures. 648.121 Section 648.121 Wildlife and Fisheries FISHERY CONSERVATION AND MANAGEMENT, NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION, DEPARTMENT OF COMMERCE FISHERIES OF THE NORTHEASTERN UNITED STATES Management Measures for the Scup...

  6. 50 CFR 635.28 - Closures.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... closure, NMFS will also take into consideration the criteria specified in § 635.27(a)(8). (b) Sharks. (1... for the shark species or complexes specified in § 635.27(b)(1) will remain open. (2) When NMFS calculates that the landings for the shark species or complexes, as specified in § 635.27(b)(1), has...

  7. Recent Progress in DOE Waste Tank Closure

    SciTech Connect

    Langton, Ch.H.; Cook, J.R.

    2008-07-01

    The US DOE complex currently has over 330 underground storage tanks that have been used to process and store radioactive waste generated from the production of weapons materials. These tanks contain over 380 million liters of high-level and low-level radioactive waste. The waste consists of radioactively contaminated sludge, supernate, salt cake or calcine. Most of the waste exists at four US DOE locations, the Hanford Site, the Savannah River Site, the Idaho Nuclear Technology and Engineering Center and the West Valley Demonstration Project. A summary of the DOE tank closure activities was first issued in 2001. Since then, regulatory changes have taken place that affect some of the sites and considerable progress has been made in closing tanks. This paper presents an overview of the current regulatory changes and drivers and a summary of the progress in tank closures at the various sites over the intervening six years. A number of areas are addressed including closure strategies, characterization of bulk waste and residual heel material, waste removal technologies for bulk waste, heel residuals and annuli, tank fill materials, closure system modeling and performance assessment programs, lessons learned, and external reviews. (authors)

  8. 50 CFR 679.22 - Closures.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... closures in the Chum Salmon Savings Area. (11) (12) Alaska Seamount Habitat Protection Areas. No federally permitted vessel may fish with bottom contact gear in the Alaska Seamount Habitat Protection Areas, as... Douglas (58°51.10′ N. lat.) to Point Adam (59°15.27′ N. lat.). (8) Alaska Seamount Habitat...

  9. 50 CFR 679.22 - Closures.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... closures in the Chum Salmon Savings Area. (11) (12) Alaska Seamount Habitat Protection Areas. No federally permitted vessel may fish with bottom contact gear in the Alaska Seamount Habitat Protection Areas, as... Douglas (58°51.10′ N. lat.) to Point Adam (59°15.27′ N. lat.). (8) Alaska Seamount Habitat...

  10. 50 CFR 679.22 - Closures.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... closures in the Chum Salmon Savings Area. (11) (12) Alaska Seamount Habitat Protection Areas. No federally permitted vessel may fish with bottom contact gear in the Alaska Seamount Habitat Protection Areas, as... Douglas (58°51.10′ N. lat.) to Point Adam (59°15.27′ N. lat.). (8) Alaska Seamount Habitat...

  11. Measuring Need for Closure in Classroom Learners

    ERIC Educational Resources Information Center

    DeBacker, Teresa K.; Crowson, H. Michael

    2008-01-01

    Need for closure, as formulated by Kruglanski and colleagues [Kruglanski, A. W. (1990). Lay epistemic theory in social-cognitive psychology. "Psychological Inquiry," 1(3), 181-197; Kruglanski, A. W., & Webster, D. M. (1996). Motivated closing of the mind: Seizing and freezing. "Psychological Review," 103, 263-283; Webster,…

  12. 50 CFR 92.21 - Emergency closures.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ..., posting of the areas affected, notifying the State wildlife conservation agency, and announcement on the... 50 Wildlife and Fisheries 6 2010-10-01 2010-10-01 false Emergency closures. 92.21 Section 92.21 Wildlife and Fisheries UNITED STATES FISH AND WILDLIFE SERVICE, DEPARTMENT OF THE INTERIOR...

  13. The Story of a Charter School Closure.

    ERIC Educational Resources Information Center

    Flynn, Susan L.; Arguelles, Lourdes

    2001-01-01

    The story of a charter school closure is told from the perspectives of students, parents, teachers, and community members, who felt that the sponsoring district revoked the charter for political reasons despite broad local support. The experience underscores the necessity of publicly subjecting the relationship of the public school system and the…

  14. Automatically closing swing gate closure assembly

    DOEpatents

    Chang, Shih-Chih; Schuck, William J.; Gilmore, Richard F.

    1988-01-01

    A swing gate closure assembly for nuclear reactor tipoff assembly wherein the swing gate is cammed open by a fuel element or spacer but is reliably closed at a desired closing rate primarily by hydraulic forces in the absence of a fuel charge.

  15. Mechanics of Blastopore Closure during Amphibian Gastrulation

    PubMed Central

    Feroze, Rafey; Shawky, Joseph H.; von Dassow, Michelangelo; Davidson, Lance A.

    2014-01-01

    Blastopore closure in the amphibian embryo involves large scale tissue reorganization driven by physical forces. These forces are tuned to generate sustained blastopore closure throughout the course of gastrulation. We describe the mechanics of blastopore closure at multiple scales and in different regions around the blastopore by characterizing large scale tissue deformations, cell level shape change and subcellular F-actin organization and by measuring tissue force production and structural stiffness of the blastopore during gastrulation. We find that the embryo generates a ramping magnitude of force until it reaches a peak force on the order of 0.5 μ Newtons. During this time course, the embryo also stiffens 1.5 fold. Strain rate mapping of the dorsal, ventral and lateral epithelial cells proximal to the blastopore reveals changing patterns of strain rate throughout closure. Cells dorsal to the blastopore, which are fated to become neural plate ectoderm, are polarized and have straight boundaries. In contrast, cells lateral and ventral to the blastopore are less polarized and have tortuous cell boundaries. The F-actin network is organized differently in each region with the highest percentage of alignment occurring in the lateral region. Interestingly F-actin was consistently oriented toward the blastopore lip in dorsal and lateral cells, but oriented parallel to the lip in ventral regions. Cell shape and F-actin alignment analyses reveal different local mechanical environments in regions around the blastopore, which was reflected by the strain rate maps. PMID:25448691

  16. 36 CFR 13.50 - Closure procedures.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ...) Criteria. In determining whether to close an area or restrict an activity on an emergency basis, the... vicinity of the area(s) directly affected by such closures or restrictions, and other locations as... and shall be accompanied by public hearings in the area affected and other locations as...

  17. Eye closure enhances dark night perceptions

    PubMed Central

    Brodoehl, Stefan; Klingner, Carsten M.; Witte, Otto W.

    2015-01-01

    We often close our eyes when we explore objects with our fingers to reduce the dominance of the visual system over our other senses. Here we show that eye closure, even in complete darkness, results in improved somatosensory perception due to a switch from visual predominance towards a somatosensory processing mode. Using a tactile discrimination task and functional neuroimaging (fMRI) data were acquired from healthy subjects with their eyes opened and closed in two environments: under ambient light and in complete darkness. Under both conditions the perception threshold decreased when subjects closed their eyes, and their fingers became more sensitive. In complete darkness, eye closure significantly increased occipital blood-oxygen-level-dependent (BOLD) activity in the somatosensory and secondary visual processing areas. This change in brain activity was associated with enhanced coupling between the sensory thalamus and somatosensory cortex; connectivity between the visual and somatosensory areas decreased. The present study demonstrates that eye closure improves somatosensory perception not merely due to the lack of visual signals; instead, the act of closing the eyes itself alters the processing mode in the brain: with eye closure the brain switches from thalamo-cortical networks with visual dominance to a non-visually dominated processing mode. PMID:26012706

  18. 49 CFR 195.124 - Closures.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 49 Transportation 3 2010-10-01 2010-10-01 false Closures. 195.124 Section 195.124 Transportation Other Regulations Relating to Transportation (Continued) PIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION (CONTINUED) PIPELINE SAFETY TRANSPORTATION OF HAZARDOUS LIQUIDS...

  19. 49 CFR 195.124 - Closures.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 49 Transportation 3 2011-10-01 2011-10-01 false Closures. 195.124 Section 195.124 Transportation Other Regulations Relating to Transportation (Continued) PIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION (CONTINUED) PIPELINE SAFETY TRANSPORTATION OF HAZARDOUS LIQUIDS...

  20. Fostering career resilience amid a hospital closure.

    PubMed

    Lucey, Paula A

    2015-01-01

    Resilience involves fostering a positive response or outcome when one faces adverse circumstances. This article provides a personal account of the closure of a public hospital and the resilience the nursing staff and chief nurse found to go forward in their nursing careers. Three major aspects are explored: professional identity, confidence/courage, and a sense of caring or concern.

  1. 40 CFR 264.575 - Closure.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... decontaminating all residues and making all reasonable efforts to effect removal or decontamination of... care requirements that apply to landfills (§ 264.310). For permitted units, the requirement to have a...-closure, and financial responsibility, such a drip pad is then considered to be landfill, and the owner...

  2. 40 CFR 264.575 - Closure.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... decontaminating all residues and making all reasonable efforts to effect removal or decontamination of... care requirements that apply to landfills (§ 264.310). For permitted units, the requirement to have a...-closure, and financial responsibility, such a drip pad is then considered to be landfill, and the owner...

  3. 40 CFR 264.575 - Closure.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... decontaminating all residues and making all reasonable efforts to effect removal or decontamination of... care requirements that apply to landfills (§ 264.310). For permitted units, the requirement to have a...-closure, and financial responsibility, such a drip pad is then considered to be landfill, and the owner...

  4. 40 CFR 264.575 - Closure.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... decontaminating all residues and making all reasonable efforts to effect removal or decontamination of... care requirements that apply to landfills (§ 264.310). For permitted units, the requirement to have a...-closure, and financial responsibility, such a drip pad is then considered to be landfill, and the owner...

  5. 40 CFR 264.575 - Closure.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... decontaminating all residues and making all reasonable efforts to effect removal or decontamination of... care requirements that apply to landfills (§ 264.310). For permitted units, the requirement to have a...-closure, and financial responsibility, such a drip pad is then considered to be landfill, and the owner...

  6. 50 CFR 635.28 - Fishery closures.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... hammerhead sharks and Atlantic aggregated LCS; (ii) Gulf of Mexico hammerhead sharks and Gulf of Mexico..., or migratory patterns of blacktip sharks, hammerhead sharks, and aggregated LCS based on scientific... closure, NMFS will also take into consideration the criteria specified in § 635.27(a)(8). (b)...

  7. 50 CFR 635.28 - Fishery closures.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... hammerhead sharks and Atlantic aggregated LCS; (ii) Gulf of Mexico hammerhead sharks and Gulf of Mexico..., or migratory patterns of blacktip sharks, hammerhead sharks, and aggregated LCS based on scientific... closure, NMFS will also take into consideration the criteria specified in § 635.27(a)(8). (b)...

  8. Loss of Permanent First Molars in the Mixed Dentition: Circumstances Resulting in Extraction and Requiring Orthodontic Management.

    PubMed

    Mathu-Muju, Kavita R; Kennedy, David B

    2016-10-15

    Extraction of significantly compromised permanent first molars may be indicated during the mixed dentition stage of occlusal development. The purpose of this article was to review circumstances that can result in the loss of a permanent first molar-including dental caries, molar incisor hypomineralization, eruption disturbances of permanent teeth, and failure of restorative treatment to affirm that a complete dental arch is not necessary for the existence of a functional dental arch. The extraction of permanent first molar(s) with subsequent orthodontic treatment in a young patient can be considered a cost-effective alternative to placing complex restorations that require replacement over the lifespan. Approaches to establish a functional dental arch in the event of the loss of a permanent first molar(s) are outlined. Additionally, orthodontic diagnostic and treatment principles are reviewed. Case histories are provided to illustrate the clinical management of permanent first molar extractions to achieve a functional dental arch.

  9. Interval estimates for closure-phase and closure-amplitude imaging in radio astronomy

    NASA Technical Reports Server (NTRS)

    Kreinovich, Vladik; Bernat, Andrew; Kosheleva, Olga; Finkel'shtejn, Andrej

    1992-01-01

    Interval estimates for closure-phase and closure-amplitude imaging that enable the reconstruction of a radioimage from results of approximate measurements are presented. If the intervals for the measured values are known, the precision of the result of the reconstruction cannot be solved by standard interval methods, because the phase value is based on a circle but not on a real line. If the phase theta (x bar) is measured with precision epsilon, so that the closure phase theta (x bar) + theta (y bar) - theta (x bar + y bar) is known with precision 3 epsilon, then from these measurements theta can be reconstructed with precision 6 epsilon. Similar estimates are given for closure amplitude.

  10. The relationship between the need for closure and deviant bias: an investigation of generality and process.

    PubMed

    Rubin, Mark; Paolini, Stefania; Crisp, Richard J

    2011-06-01

    The need for closure predicts an evaluative bias against people whose opinions or behaviors deviate from those of other members of their social groups. In the present study, we investigated whether the relationship between the need for closure and deviant bias generalized to nonsocial stimuli, and we examined the process underlying this relationship. Sixty-one undergraduate students completed measures of the need for closure, the need for structure, intolerance for ambiguity, and the ability to be decisive and achieve cognitive structure. They then rated their liking for letters of the Latin alphabet ("A" & "B") whose locations were consistent and inconsistent with relevant categories ("A circle" and "B circle"). Participants liked category-inconsistent letters less than category-consistent letters. Measures related to the need for structure and closed-mindedness correlated positively with this deviant bias, whereas measures related to the ability to be decisive and achieve cognitive structure did not. These results imply that the relationship between the need for closure and deviant bias is a relatively basic and pervasive effect that is not unique to social deviance and is driven by the need for structure and closed-mindedness. Implications for social and nonsocial stimuli are discussed.

  11. 40 CFR 258.71 - Financial assurance for closure.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... required under § 258.60 at any time during the active life in accordance with the closure plan. The owner... requiring a final cover at any time during the active life when the extent and manner of its operation would make closure the most expensive, as indicated by its closure plan (see § 258.60(c)(2) of this part)....

  12. 40 CFR 258.71 - Financial assurance for closure.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... required under § 258.60 at any time during the active life in accordance with the closure plan. The owner... requiring a final cover at any time during the active life when the extent and manner of its operation would make closure the most expensive, as indicated by its closure plan (see § 258.60(c)(2) of this part)....

  13. 40 CFR 258.71 - Financial assurance for closure.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... required under § 258.60 at any time during the active life in accordance with the closure plan. The owner... requiring a final cover at any time during the active life when the extent and manner of its operation would make closure the most expensive, as indicated by its closure plan (see § 258.60(c)(2) of this part)....

  14. 9 CFR 381.301 - Containers and closures.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 9 Animals and Animal Products 2 2010-01-01 2010-01-01 false Containers and closures. 381.301... Containers and closures. (a) Examination and cleaning of empty containers. (1) Empty containers, closures... and free of structural defects and damage that may affect product or container integrity. Such...

  15. 9 CFR 318.301 - Containers and closures.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 9 Animals and Animal Products 2 2010-01-01 2010-01-01 false Containers and closures. 318.301... Canning and Canned Products § 318.301 Containers and closures. (a) Examination and cleaning of empty containers. (1) Empty containers, closures, and flexible pouch roll stock shall be evaluated by...

  16. 31 CFR 413.1 - Closure of streets.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 31 Money and Finance:Treasury 2 2013-07-01 2013-07-01 false Closure of streets. 413.1 Section 413.1 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) SECRET SERVICE, DEPARTMENT OF THE TREASURY CLOSURE OF STREETS NEAR THE WHITE HOUSE § 413.1 Closure of streets. (a)...

  17. 31 CFR 413.1 - Closure of streets.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 31 Money and Finance:Treasury 2 2012-07-01 2012-07-01 false Closure of streets. 413.1 Section 413.1 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) SECRET SERVICE, DEPARTMENT OF THE TREASURY CLOSURE OF STREETS NEAR THE WHITE HOUSE § 413.1 Closure of streets. (a)...

  18. 31 CFR 413.1 - Closure of streets.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 31 Money and Finance:Treasury 2 2011-07-01 2011-07-01 false Closure of streets. 413.1 Section 413.1 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) SECRET SERVICE, DEPARTMENT OF THE TREASURY CLOSURE OF STREETS NEAR THE WHITE HOUSE § 413.1 Closure of streets. (a)...

  19. 31 CFR 413.1 - Closure of streets.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 31 Money and Finance: Treasury 2 2014-07-01 2014-07-01 false Closure of streets. 413.1 Section 413.1 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) SECRET SERVICE, DEPARTMENT OF THE TREASURY CLOSURE OF STREETS NEAR THE WHITE HOUSE § 413.1 Closure of streets. (a)...

  20. 31 CFR 413.1 - Closure of streets.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 31 Money and Finance: Treasury 2 2010-07-01 2010-07-01 false Closure of streets. 413.1 Section 413.1 Money and Finance: Treasury Regulations Relating to Money and Finance (Continued) SECRET SERVICE, DEPARTMENT OF THE TREASURY CLOSURE OF STREETS NEAR THE WHITE HOUSE § 413.1 Closure of streets. (a)...

  1. 27 CFR 28.102 - Bottles to have closures affixed.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 27 Alcohol, Tobacco Products and Firearms 1 2011-04-01 2011-04-01 false Bottles to have closures... Transportation to a Manufacturing Bonded Warehouse § 28.102 Bottles to have closures affixed. Every bottle containing distilled spirits to be withdrawn under the provisions of this subpart shall have a closure...

  2. 27 CFR 28.102 - Bottles to have closures affixed.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 27 Alcohol, Tobacco Products and Firearms 1 2010-04-01 2010-04-01 false Bottles to have closures... Transportation to a Manufacturing Bonded Warehouse § 28.102 Bottles to have closures affixed. Every bottle containing distilled spirits to be withdrawn under the provisions of this subpart shall have a closure...

  3. 27 CFR 28.102 - Bottles to have closures affixed.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 27 Alcohol, Tobacco Products and Firearms 1 2014-04-01 2014-04-01 false Bottles to have closures... Transportation to a Manufacturing Bonded Warehouse § 28.102 Bottles to have closures affixed. Every bottle containing distilled spirits to be withdrawn under the provisions of this subpart shall have a closure...

  4. 27 CFR 28.102 - Bottles to have closures affixed.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 27 Alcohol, Tobacco Products and Firearms 1 2012-04-01 2012-04-01 false Bottles to have closures... Transportation to a Manufacturing Bonded Warehouse § 28.102 Bottles to have closures affixed. Every bottle containing distilled spirits to be withdrawn under the provisions of this subpart shall have a closure...

  5. 27 CFR 28.102 - Bottles to have closures affixed.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 27 Alcohol, Tobacco Products and Firearms 1 2013-04-01 2013-04-01 false Bottles to have closures... Transportation to a Manufacturing Bonded Warehouse § 28.102 Bottles to have closures affixed. Every bottle containing distilled spirits to be withdrawn under the provisions of this subpart shall have a closure...

  6. 40 CFR 264.603 - Post-closure care.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 40 Protection of Environment 25 2010-07-01 2010-07-01 false Post-closure care. 264.603 Section 264... Miscellaneous Units § 264.603 Post-closure care. A miscellaneous unit that is a disposal unit must be maintained in a manner that complies with § 264.601 during the post-closure care period. In addition, if...

  7. The Effect of Rural Hospital Closures on Community Economic Health

    PubMed Central

    Holmes, George M; Slifkin, Rebecca T; Randolph, Randy K; Poley, Stephanie

    2006-01-01

    Objective To examine the effect of rural hospital closures on the local economy. Data Sources U.S. Census Bureau, OSCAR, Medicare Cost Reports, and surveys of individuals knowledgeable about local hospital closures. Study Design Economic data at the county level for 1990–2000 were combined with information on hospital closures. The study sample was restricted to rural counties experiencing a closure during the sample period. Longitudinal regression methods were used to estimate the effect of hospital closure on per-capita income, unemployment rate, and other community economic measures. Models included both leading and lagged closure terms allowing a preclosure economic downturn as well as time for the closure to be fully realized by the community. Data Collection Information on closures was collected by contacting every state hospital association, reconciling information gathered with that contained in the American Hospital Association file and OIG reports. Principal Findings Results indicate that the closure of the sole hospital in the community reduces per-capita income by $703 (p<0.05) or 4 percent (p<0.05) and increases the unemployment rate by 1.6 percentage points (p<0.01). Closures in communities with alternative sources of hospital care had no long-term economic impact, although income decreased for 2 years following the closure. Conclusions The local economic effects of a hospital closure should be considered when regulations that affect hospitals' financial well-being are designed or changed. PMID:16584460

  8. Using Single-Camera 3-D Imaging to Guide Material Handling Robots in a Nuclear Waste Package Closure System

    SciTech Connect

    Rodney M. Shurtliff

    2005-09-01

    Nuclear reactors for generating energy and conducting research have been in operation for more than 50 years, and spent nuclear fuel and associated high-level waste have accumulated in temporary storage. Preparing this spent fuel and nuclear waste for safe and permanent storage in a geological repository involves developing a robotic packaging system—a system that can accommodate waste packages of various sizes and high levels of nuclear radiation. During repository operation, commercial and government-owned spent nuclear fuel and high-level waste will be loaded into casks and shipped to the repository, where these materials will be transferred from the casks into a waste package, sealed, and placed into an underground facility. The waste packages range from 12 to 20 feet in height and four and a half to seven feet in diameter. Closure operations include sealing the waste package and all its associated functions, such as welding lids onto the container, filling the inner container with an inert gas, performing nondestructive examinations on welds, and conducting stress mitigation. The Idaho National Laboratory is designing and constructing a prototype Waste Package Closure System (WPCS). Control of the automated material handling is an important part of the overall design. Waste package lids, welding equipment, and other tools must be moved in and around the closure cell during the closure process. These objects are typically moved from tool racks to a specific position on the waste package to perform a specific function. Periodically, these objects are moved from a tool rack or the waste package to the adjacent glovebox for repair or maintenance. Locating and attaching to these objects with the remote handling system, a gantry robot, in a loosely fixtured environment is necessary for the operation of the closure cell. Reliably directing the remote handling system to pick and place the closure cell equipment within the cell is the major challenge.

  9. Permanent Magnetic Bearing for Spacecraft Applications

    NASA Technical Reports Server (NTRS)

    Morales, Winfredo; Fusaro, Robert; Kascak, Albert

    2008-01-01

    A permanent, totally passive magnetic bearing rig was designed, constructed, and tested. The suspension of the rotor was provided by two sets of radial permanent magnetic bearings operating in the repulsive mode. The axial support was provided by jewel bearings on both ends of the rotor. The rig was successfully operated to speeds of 5500 rpm using an air impeller. Radial and axial stiffnesses of the permanent magnetic bearings were experimentally measured and then compared to finite element results. The natural damping of the rotor was measured and a damping coefficient was calculated.

  10. Permanent multipole magnets with adjustable strength

    SciTech Connect

    Halbach, K.

    1983-03-01

    Preceded by a short discussion of the motives for using permanent magnets in accelerators, a new type of permanent magnet for use in accelerators is presented. The basic design and most important properties of a quadrupole will be described that uses both steel and permanent magnet material. The field gradient produced by this magnet can be adjusted without changing any other aspect of the field produced by this quadrupole. The generalization of this concept to produce other multipole fields, or combination of multipole fields, will also be presented.

  11. Macroscopic simulation of isotropic permanent magnets

    NASA Astrophysics Data System (ADS)

    Bruckner, Florian; Abert, Claas; Vogler, Christoph; Heinrichs, Frank; Satz, Armin; Ausserlechner, Udo; Binder, Gernot; Koeck, Helmut; Suess, Dieter

    2016-03-01

    Accurate simulations of isotropic permanent magnets require to take the magnetization process into account and consider the anisotropic, nonlinear, and hysteretic material behaviour near the saturation configuration. An efficient method for the solution of the magnetostatic Maxwell equations including the description of isotropic permanent magnets is presented. The algorithm can easily be implemented on top of existing finite element methods and does not require a full characterization of the hysteresis of the magnetic material. Strayfield measurements of an isotropic permanent magnet and simulation results are in good agreement and highlight the importance of a proper description of the isotropic material.

  12. Prospects for nanoparticle-based permanent magnets

    SciTech Connect

    Balamurugan, B; Sellmyer, DJ; Hadjipanayis, GC; Skomski, R

    2012-09-01

    Magnetic nanoparticles smaller than similar to 15 nm in diameter and with high magnetocrystalline anisotropies K-1 >= 1 MJ m(-3) can be used as building blocks for next-generation permanent magnets. Advances in processing steps are discussed, such as self-assembly, alignment of the easy axes and appropriate nanostructuring that will enable the fabrication of densely packed nanopartide assemblies with improved permanent-magnet properties. This study also proposes an idealized nanocomposite structure for nanoparticle-based future permanent magnets with enhanced energy products. (C) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

  13. 40 CFR 264.118 - Post-closure plan; amendment of plan.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... partial and final closures, affect the approved post-closure plan. (iv) The owner or operator requests the... 40 Protection of Environment 25 2010-07-01 2010-07-01 false Post-closure plan; amendment of plan... FACILITIES Closure and Post-Closure § 264.118 Post-closure plan; amendment of plan. (a) Written Plan....

  14. 77 FR 75186 - Notice of Closure, Target Shooting Public Safety Closure on the Lake Mountains in Utah County, UT

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-12-19

    ... Bureau of Land Management Notice of Closure, Target Shooting Public Safety Closure on the Lake Mountains... approximately 900 acres of public land on the Lake Mountains in Utah County, Utah, to recreational target... Lake Mountains area. DATES: This target shooting closure within the described area will remain...

  15. New devices and techniques for endoscopic closure of gastrointestinal perforations

    PubMed Central

    Li, Yue; Wu, Jian-Hua; Meng, Yan; Zhang, Qiang; Gong, Wei; Liu, Si-De

    2016-01-01

    Gastrointestinal perforations, which need to be managed quickly, are associated with high morbidity and mortality. Treatments used to close these perforations range from surgery to endoscopic therapy. Nowadays, with the development of new devices and techniques, endoscopic therapy is becoming more popular. However, there are different indications and clinical efficacies between different methods, because of the diverse properties of endoscopic devices and techniques. Successful management also depends on other factors, such as the precise location of the perforation, its size and the length of time between the occurrence and diagnosis. In this study, we performed a comprehensive review of various devices and introduced the different techniques that are considered effective to treat gastrointestinal perforations. In addition, we focused on the different methods used to achieve successful closure, based on the literature and our clinical experiences. PMID:27672268

  16. Interfacial closure of contacting surfaces

    NASA Astrophysics Data System (ADS)

    Rieutord, F.; Rauer, C.; Moriceau, H.

    2014-08-01

    Understanding the contact between solid surfaces is a long-standing problem which has a strong impact on the physics of many processes such as adhesion, friction, lubrication and wear. Experimentally, the investigation of solid/solid interfaces remains challenging today, due to the lack of experimental techniques able to provide sub-nanometer scale information on interfaces buried between millimeters of materials. Yet, a strong interest exists improving the modeling of contact mechanics of materials in order to adjust their interface properties (e.g., thermal transport, friction). We show here that the essential features of the residual gap between contacting surfaces can be measured using high energy X-ray synchrotron reflectivity. The presence of this nano-gap is general to the contact of solids. In some special case however, it can be removed when attractive forces take over repulsive contributions, depending on both height and wavelength of asperity distributions (roughness). A criterion for this instability is established in the standard case of van der Waals attractive forces and elastic asperity compression repulsive forces (Hertz model). This collapse instability is confirmed experimentally in the case of silicon direct bonding, using high-energy X-ray synchrotron reflectivity and adhesion energy measurements. The possibility to achieve fully closed interfaces at room temperature opens interesting perspectives to build stronger assemblies with smaller thermal budgets.

  17. Access to Care in Rural America: Impact of Hospital Closures

    PubMed Central

    Rosenbach, Margo L.; Dayhoff, Debra A.

    1995-01-01

    This article employs a quasi-experimental, pre/post comparison group design to determine whether rural hospital closures (n=11) have had a detrimental impact on access to inpatient and outpatient care for the Medicare population. Closure areas experienced a significant decrease in medical admissions, although admission rates remained higher than in comparison areas. Physician services were not found to substitute for inpatient services following a closure. No adverse impacts on mortality were observed. Patients in closure areas were more likely to be admitted to urban teaching hospitals following the closure of their local hospital. PMID:10153469

  18. 30 CFR 817.132 - Cessation of operations: Permanent.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... INTERIOR PERMANENT PROGRAM PERFORMANCE STANDARDS PERMANENT PROGRAM PERFORMANCE STANDARDS-UNDERGROUND MINING ACTIVITIES § 817.132 Cessation of operations: Permanent. (a) The person who conducts underground mining... equipment, structures, or other facilities not required for continued underground mining activities...

  19. 30 CFR 817.132 - Cessation of operations: Permanent.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... INTERIOR PERMANENT PROGRAM PERFORMANCE STANDARDS PERMANENT PROGRAM PERFORMANCE STANDARDS-UNDERGROUND MINING ACTIVITIES § 817.132 Cessation of operations: Permanent. (a) The person who conducts underground mining... equipment, structures, or other facilities not required for continued underground mining activities...

  20. Permanence and durability of digital prints on paper

    NASA Astrophysics Data System (ADS)

    Černič, M.; Dolenc, J.; Scheicher, L.

    2006-06-01

    The paper used as a printing substrate in electro photographical techniques should achieve appropriate structure, surface and optical properties as well as thermal stability. Printing products are often exposed to negative influence from external climate conditions. Surface treatment with varnishing and lamination is a common solution for protecting the final products against light, higher temperatures and elevated relative humidity. In the context of the applied research done in cooperation with the printing industry we studied permanence and durability of paper, image of prints and final printed product. We were also examining the influence of accelerated artificial ageing of paper and colour prints in electro photographic printing technique (Xeikon), with two types of surface treatment on the quality of the printed products. Determination of basic physical, chemical and surface characteristics (mechanical strength, optical and colorimetric characteristics of paper) as well as the evaluation of permanence according to EN ISO 9706 (∞) have shown unsuitable optical and colorimetric properties of paper. The evaluation of durability of paper and prints after accelerated artificial ageing according to the EN ISO 5630-3 standard indicates unsuitable optical and colorimetric properties, which consequently cause low optical and colorimetric stability. Colour prints with a surface protection of polymer varnish or foil protection are very unstable, causing deterioration of colour, contrasts and colour balance. The results of research work are very useful for the evaluation of durable printing paper used for various new digital printing systems and for evaluation of printing material of permanent quality.

  1. Gyro-effect stabilizes unstable permanent maglev centrifugal pump.

    PubMed

    Qian, Kun-Xi

    2007-03-01

    According to Earnshaw's Theorem (1839), the passive maglev cannot achieve stable equilibrium and thus an extra coil is needed to make the rotor electrically levitated in a heart pump. The author had developed a permanent maglev centrifugal pump utilizing only passive magnetic bearings, to keep the advantages but to avoid the disadvantages of the electric maglev pumps. The equilibrium stability was achieved by use of so-called "gyro-effect": a rotating body with certain high speed can maintain its rotation stably. This pump consisted of a rotor (driven magnets and an impeller), and a stator with motor coil and pump housing. Two passive magnetic bearings between rotor and stator were devised to counteract the attractive force between the motor coil iron core and the rotor driven magnets. Bench testing with saline demonstrated a levitated rotor under preconditions of higher than 3,250 rpm rotation and more than 1 l/min pumping flow. Rotor levitation was demonstrated by 4 Hall sensors on the stator, with evidence of reduced maximal eccentric distance from 0.15 mm to 0.07 mm. The maximal rotor vibration amplitude was 0.06 mm in a gap of 0.15 mm between rotor and stator. It concluded that Gyro-effect can help passive maglev bearings to achieve stabilization of permanent maglev pump; and that high flow rate indicates good hydraulic property of the pump, which helps also the stability of passive maglev pump.

  2. A least squares closure approximation for liquid crystalline polymers

    NASA Astrophysics Data System (ADS)

    Sievenpiper, Traci Ann

    2011-12-01

    An introduction to existing closure schemes for the Doi-Hess kinetic theory of liquid crystalline polymers is provided. A new closure scheme is devised based on a least squares fit of a linear combination of the Doi, Tsuji-Rey, Hinch-Leal I, and Hinch-Leal II closure schemes. The orientation tensor and rate-of-strain tensor are fit separately using data generated from the kinetic solution of the Smoluchowski equation. The known behavior of the kinetic solution and existing closure schemes at equilibrium is compared with that of the new closure scheme. The performance of the proposed closure scheme in simple shear flow for a variety of shear rates and nematic polymer concentrations is examined, along with that of the four selected existing closure schemes. The flow phase diagram for the proposed closure scheme under the conditions of shear flow is constructed and compared with that of the kinetic solution. The study of the closure scheme is extended to the simulation of nematic polymers in plane Couette cells. The results are compared with existing kinetic simulations for a Landau-deGennes mesoscopic model with the application of a parameterized closure approximation. The proposed closure scheme is shown to produce a reasonable approximation to the kinetic results in the case of simple shear flow and plane Couette flow.

  3. Multipole shimming of permanent magnets using harmonic corrector rings.

    PubMed

    Jachmann, R C; Trease, D R; Bouchard, L-S; Sakellariou, D; Martin, R W; Schlueter, R D; Budinger, T F; Pines, A

    2007-03-01

    Shimming systems are required to provide sufficient field homogeneity for high resolution nuclear magnetic resonance (NMR). In certain specialized applications, such as rotating-field NMR and mobile ex situ NMR, permanent magnet-based shimming systems can provide considerable advantages. We present a simple two-dimensional shimming method based on harmonic corrector rings which can provide arbitrary multipole order shimming corrections. Results demonstrate, for example, that quadrupolar order shimming improves the linewidth by up to an order of magnitude. An additional order of magnitude reduction is in principle achievable by utilizing this shimming method for z-gradient correction and higher order xy gradients.

  4. Permanent superconducting magnets for space applications

    NASA Technical Reports Server (NTRS)

    Weinstein, Roy

    1994-01-01

    Work has been done to develop superconducting trapped field magnets (TFM's) and to apply them to a bumper-tether device for magnetic docking of spacecraft. The quality parameters for TFM's are J(c), the critical current of the superconductor, and d, the diameter of the superconducting tile. During this year we have doubled d, for production models, from 1 cm to 2 cm. This was done by means of seeding, an improved temperature profile in processing, and the addition of 1 percent Pt to the superconductor chemistry. Using these tiles we have set increasing records for the fields' permanent magnets. Magnets fabricated from old 1 cm tiles trapped 1.52 Tesla at 77K, 4.0T at 65K and 7.0T at 55K. The second of these fields broke a 17 year old record set at Stanford. The third field broke our own record. More recently using 2 cm tiles, we have trapped 2.3T at 77K, and 5.3T at 65K. We expect to trap lOT at 55K in this magnet in the near future. We have also achieved increases in J(c) using a method we developed for seeding U-235, and subsequently bombarding with neutrons. This method doubles J(c). We have not yet fabricated magnets from these tiles. During this year we have increased production yields from 15 percent to 95 percent. We have explored the properties of a magnetic bumper-tether for spacecraft. We have measured the bumper forces, and their dependence on time, distance, and the field of the ordinary ferromagnet (used together with a TFM). We have accounted for 85 percent of the collision energy, and its transformation to magnetic energy and heat energy. We have learned to control the relative bumper and tether forces by controlling TFM and ferromagnetic field strengths.

  5. 78 FR 14122 - Revocation of Permanent Variances

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-03-04

    ... Occupational Safety and Health Administration Revocation of Permanent Variances AGENCY: Occupational Safety and Health Administration (OSHA), Labor. ACTION: Notice of revocation. SUMMARY: With this notice, OSHA is... into consideration these newly corrected cross references. DATES: The effective date of the...

  6. Nonuniform radiation damage in permanent magnet quadrupoles

    SciTech Connect

    Danly, C. R.; Merrill, F. E.; Barlow, D.; Mariam, F. G.

    2014-08-15

    We present data that indicate nonuniform magnetization loss due to radiation damage in neodymium-iron-boron Halbach-style permanent magnet quadrupoles. The proton radiography (pRad) facility at Los Alamos uses permanent-magnet quadrupoles for magnifying lenses, and a system recently commissioned at GSI-Darmsdadt uses permanent magnets for its primary lenses. Large fluences of spallation neutrons can be produced in close proximity to these magnets when the proton beam is, intentionally or unintentionally, directed into the tungsten beam collimators; imaging experiments at LANL’s pRad have shown image degradation with these magnetic lenses at proton beam doses lower than those expected to cause damage through radiation-induced reduction of the quadrupole strength alone. We have observed preferential degradation in portions of the permanent magnet quadrupole where the field intensity is highest, resulting in increased high-order multipole components.

  7. Characterizing hydrologic permanence in headwater streams

    EPA Science Inventory

    The presentation will be an overview of research to inform jurisdictional determinations for the Clean Water Act, in particular research that hydrographic comparisons of the extent and hydrologic permanence of headwater streams, indicator development, and an evaluation of a rapid...

  8. Permanent magnet edge-field quadrupole

    DOEpatents

    Tatchyn, Roman O.

    1997-01-01

    Planar permanent magnet edge-field quadrupoles for use in particle accelerating machines and in insertion devices designed to generate spontaneous or coherent radiation from moving charged particles are disclosed. The invention comprises four magnetized rectangular pieces of permanent magnet material with substantially similar dimensions arranged into two planar arrays situated to generate a field with a substantially dominant quadrupole component in regions close to the device axis.

  9. Permanent education in health: a review

    PubMed Central

    Miccas, Fernanda Luppino; Batista, Sylvia Helena Souza da Silva

    2014-01-01

    OBJECTIVE To undertake a meta-synthesis of the literature on the main concepts and practices related to permanent education in health. METHODS A bibliographical search was conducted for original articles in the PubMed, Web of Science, LILACS, IBECS and SciELO databases, using the following search terms: “public health professional education”, “permanent education”, “continuing education”, “permanent education health”. Of the 590 articles identified, after applying inclusion and exclusion criteria, 48 were selected for further analysis, grouped according to the criteria of key elements, and then underwent meta-synthesis. RESULTS The 48 original publications were classified according to four thematic units of key elements: 1) concepts, 2) strategies and difficulties, 3) public policies and 4) educational institutions. Three main conceptions of permanent education in health were found: problem-focused and team work, directly related to continuing education and education that takes place throughout life. The main strategies for executing permanent education in health are discussion, maintaining an open space for permanent education, and permanent education clusters. The most limiting factor is mainly related to directly or indirect management. Another highlight is the requirement for implementation and maintenance of public policies, and the availability of financial and human resources. The educational institutions need to combine education and service aiming to form critical-reflexive graduates. CONCLUSIONS The coordination between health and education is based as much on the actions of health services as on management and educational institutions. Thus, it becomes a challenge to implement the teaching-learning processes that are supported by critical-reflexive actions. It is necessary to carry out proposals for permanent education in health involving the participation of health professionals, teachers and educational institutions. PMID:24789649

  10. Permanent magnet edge-field quadrupole

    DOEpatents

    Tatchyn, R.O.

    1997-01-21

    Planar permanent magnet edge-field quadrupoles for use in particle accelerating machines and in insertion devices designed to generate spontaneous or coherent radiation from moving charged particles are disclosed. The invention comprises four magnetized rectangular pieces of permanent magnet material with substantially similar dimensions arranged into two planar arrays situated to generate a field with a substantially dominant quadrupole component in regions close to the device axis. 10 figs.

  11. Parallel closures in an inhomogeneous magnetic field

    NASA Astrophysics Data System (ADS)

    Lee, Hankyu; Ji, Jeong-Young

    2016-10-01

    We solve a reduced drift kinetic equation with a Krook-type model collision operator to obtain parallel closures. Grid points in the velocity space are chosen for Gauss-Laguerre quadrature to take closure moments. For trapped and passing regimes, analytical solutions are expressed as kernel-weighted integrals of thermodynamic drives. The analytical sloutions are compared to numerical solutions obtained from a finite difference method. Inverting the free streaming operator near a bouncing point is investigated to improve accuracy of solutions. Research supported by the U.S. DOE under Grant Nos. DE-SC0014033, DE-FG02-04ER54746, DE-FC02-04ER54798, and DE-FC02-05ER54812.

  12. Autonomic Closure for Large Eddy Simulation

    NASA Astrophysics Data System (ADS)

    King, Ryan; Hamlington, Peter; Dahm, Werner J. A.

    2015-11-01

    A new autonomic subgrid-scale closure has been developed for large eddy simulation (LES). The approach poses a supervised learning problem that captures nonlinear, nonlocal, and nonequilibrium turbulence effects without specifying a predefined turbulence model. By solving a regularized optimization problem on test filter scale quantities, the autonomic approach identifies a nonparametric function that represents the best local relation between subgrid stresses and resolved state variables. The optimized function is then applied at the grid scale to determine unknown LES subgrid stresses by invoking scale similarity in the inertial range. A priori tests of the autonomic approach on homogeneous isotropic turbulence show that the new approach is amenable to powerful optimization and machine learning methods and is successful for a wide range of filter scales in the inertial range. In these a priori tests, the autonomic closure substantially improves upon the dynamic Smagorinsky model in capturing the instantaneous, statistical, and energy transfer properties of the subgrid stress field.

  13. A regenerative approach towards mucosal fenestration closure.

    PubMed

    Gandi, Padma; Anumala, Naveen; Reddy, Amarender; Chandra, Rampalli Viswa

    2013-06-06

    Mucosal fenestration is an opening or an interstice through the oral mucosa. A lesion which occurs with greater frequency than generally realised, its occurrence is attributed to a myriad of causes. Mucogingival procedures including connective tissue grafts, free gingival grafts and lateral pedicle grafts are generally considered to be the treatment of choice in the closure of a mucosal fenestration. More often, these procedures are performed in conjunction with other procedures such as periradicular surgery and with bone grafts. However, the concomitant use of gingival grafts and bone grafts in mucosal fenestrations secondary to infections in sites exhibiting severe bone loss is highly debatable. In this article, we report two cases of mucosal fenestrations secondary to trauma and their management by regenerative periodontal surgery with the placement of guided tissue regeneration membrane and bone graft. The final outcome was a complete closure of the fenestration in both the cases.

  14. Drug-induced Angle-Closure Glaucoma

    PubMed Central

    Khurana, Aruj K; Khurana, Bhawna

    2012-01-01

    Drug-induced angle-closure glaucoma is an important entity for the ophthalmologist as well as the general physician as it represents a preventable cause of potential blindness. This brief review highlights the fact that a high index of suspicion, in a susceptible individual followed by confirmation on appropriate imaging modality (UBM, ultrasound or anterior segment OCT) can alleviate the threat to sight and also help to institute appropriate therapy. PMID:27990064

  15. Evaluation of Two Energy Balance Closure Parametrizations

    NASA Astrophysics Data System (ADS)

    Eder, Fabian; De Roo, Frederik; Kohnert, Katrin; Desjardins, Raymond L.; Schmid, Hans Peter; Mauder, Matthias

    2014-05-01

    A general lack of energy balance closure indicates that tower-based eddy-covariance (EC) measurements underestimate turbulent heat fluxes, which calls for robust correction schemes. Two parametrization approaches that can be found in the literature were tested using data from the Canadian Twin Otter research aircraft and from tower-based measurements of the German Terrestrial Environmental Observatories (TERENO) programme. Our analysis shows that the approach of Huang et al. (Boundary-Layer Meteorol 127:273-292, 2008), based on large-eddy simulation, is not applicable to typical near-surface flux measurements because it was developed for heights above the surface layer and over homogeneous terrain. The biggest shortcoming of this parametrization is that the grid resolution of the model was too coarse so that the surface layer, where EC measurements are usually made, is not properly resolved. The empirical approach of Panin and Bernhofer (Izvestiya Atmos Oceanic Phys 44:701-716, 2008) considers landscape-level roughness heterogeneities that induce secondary circulations and at least gives a qualitative estimate of the energy balance closure. However, it does not consider any feature of landscape-scale heterogeneity other than surface roughness, such as surface temperature, surface moisture or topography. The failures of both approaches might indicate that the influence of mesoscale structures is not a sufficient explanation for the energy balance closure problem. However, our analysis of different wind-direction sectors shows that the upwind landscape-scale heterogeneity indeed influences the energy balance closure determined from tower flux data. We also analyzed the aircraft measurements with respect to the partitioning of the "missing energy" between sensible and latent heat fluxes and we could confirm the assumption of scalar similarity only for Bowen ratios 1.

  16. Fatigue Growth and Closure of Short Cracks

    DTIC Science & Technology

    1989-06-03

    stLdy has been carried out to investigate the growth and closure behavior of shortýýcracks in 2024-T351 aluminum alloy and four different conditions of...that short cracks show lessclosure behavior than longcracks. The estimates of initlal.crack lengths based on linearelastic data were made. tThese...anomalous behavior of short cracks. Advances in small crack growth have enabled increasingly quantitative studies that affect initi- ation and growth at

  17. Base Closure: A Road Map for Completion

    DTIC Science & Technology

    1991-03-22

    include, but not be limited to: 1) openness to team members’ suggestions and functional expertise, .2) confidence in team members’ abilities, 6 3) immediate...challenge while presenting the news of base closure. Fortunately, there are success stories of civilian reuse of closed military bases. 6 The Department of...and the Department of the Army Relocation Services for Employees (DARSE).15 OPM can authorize early retirement during a BRAC action. 1 6 The CPO must

  18. Calcined solids storage facility closure study

    SciTech Connect

    Dahlmeir, M.M.; Tuott, L.C.; Spaulding, B.C.

    1998-02-01

    The disposal of radioactive wastes now stored at the Idaho National Engineering and Environmental Laboratory is currently mandated under a {open_quotes}Settlement Agreement{close_quotes} (or {open_quotes}Batt Agreement{close_quotes}) between the Department of Energy and the State of Idaho. Under this agreement, all high-level waste must be treated as necessary to meet the disposal criteria and disposed of or made road ready to ship from the INEEL by 2035. In order to comply with this agreement, all calcined waste produced in the New Waste Calcining Facility and stored in the Calcined Solids Facility must be treated and disposed of by 2035. Several treatment options for the calcined waste have been studied in support of the High-Level Waste Environmental Impact Statement. Two treatment methods studied, referred to as the TRU Waste Separations Options, involve the separation of the high-level waste (calcine) into TRU waste and low-level waste (Class A or Class C). Following treatment, the TRU waste would be sent to the Waste Isolation Pilot Plant (WIPP) for final storage. It has been proposed that the low-level waste be disposed of in the Tank Farm Facility and/or the Calcined Solids Storage Facility following Resource Conservation and Recovery Act closure. In order to use the seven Bin Sets making up the Calcined Solids Storage Facility as a low-level waste landfill, the facility must first be closed to Resource Conservation and Recovery Act (RCRA) standards. This study identifies and discusses two basic methods available to close the Calcined Solids Storage Facility under the RCRA - Risk-Based Clean Closure and Closure to Landfill Standards. In addition to the closure methods, the regulatory requirements and issues associated with turning the Calcined Solids Storage Facility into an NRC low-level waste landfill or filling the bin voids with clean grout are discussed.

  19. Closure of fatigue cracks at high strains

    NASA Technical Reports Server (NTRS)

    Iyyer, N. S.; Dowling, N. E.

    1985-01-01

    Experiments were conducted on smooth specimens to study the closure behavior of short cracks at high cyclic strains under completely reversed cycling. Testing procedures and methodology, and closure measurement techniques, are described in detail. The strain levels chosen for the study cover from predominantly elastic to grossly plastic strains. Crack closure measurements are made at different crack lengths. The study reveals that, at high strains, cracks close only as the lowest stress level in the cycle is approached. The crack opening is observed to occur in the compressive part of the loading cycle. The applied stress needed to open a short crack under high strain is found to be less than for cracks under small scale yielding. For increased plastic deformations, the value of sigma sub op/sigma sub max is observed to decrease and approaches the value of R. Comparison of the experimental results with existing analysis is made and indicates the limitations of the small scale yielding approach where gross plastic deformation behavior occurs.

  20. Cosmetic Outcomes of Sutureless Closure in Gastroschisis.

    PubMed

    Zajac, Andrzej; Bogusz, Bartosz; Soltysiak, Piotr; Tomasik, Przemyslaw; Wolnicki, Michal; Wedrychowicz, Andrzej; Wojciechowski, Piotr; Gorecki, Wojciech

    2016-12-01

    Purpose A sutureless gastroschisis repair allows for spontaneous closure of abdominal wall defect. We report our experience focusing on final esthetic outcome. Methods Retrospective data were collected from medical reports of all neonates with gastroschisis operated from January 2009 to December 2013. Variables recorded included patients descriptors, management modality, and cosmetic outcome. Results From the overall group of 38 patients with gastroschisis, 20 infants treated with sutureless closure were included in this study. In the analyzed cohort, 17 (85%) children were operated under general anesthesia and 3 (15%) without intubation. Primary reduction was possible in 15 (75%) cases, and in 5 (25%) we used silo. There were two (10%) deaths in late postoperative course due to septic complications. Three (15%) infants needed laparotomy because of adhesions and bowel obstruction. There were no infectious complications of the wound. Only 55% (10/18) of children presented umbilical hernia prior to discharge. Only two (11%) children with umbilical hernia were operated until now. Almost all patients (16/18; 89%) present excellent final cosmetic result without scar formation. Conclusion Sutureless closure of uncomplicated gastroschisis is a safe technique that reduces need of intubation and provides excellent cosmetic results.

  1. Flower opening and closure: an update.

    PubMed

    van Doorn, Wouter G; Kamdee, Chanattika

    2014-11-01

    This review is an update of a 2003 review (Journal of Experimental Botany 54,1801-1812) by the same corresponding author. Many examples of flower opening have been recorded using time-lapse photography, showing its velocity and the required elongation growth. Ethylene regulates flower opening, together with at least gibberellins and auxin. Ethylene and gibberellic acid often promote and inhibit, respectively, the expression of DELLA genes and the stability of DELLA proteins. DELLA results in growth inhibition. Both hormones also inhibited and promoted, respectively, the expression of aquaporin genes required for cell elongation. Arabidopsis miRNA319a mutants exhibited narrow and short petals, whereby miRNA319a indirectly regulates auxin effects. Flower opening in roses was controlled by a NAC transcription factor, acting through miRNA164. The regulatory role of light and temperature, in interaction with the circadian clock, has been further elucidated. The end of the life span in many flowers is determined by floral closure. In some species pollination resulted in earlier closure of turgid flowers, compared with unpollinated flowers. It is hypothesized that this pollination-induced effect is only found in flowers in which closure is regulated by ethylene.

  2. Folate receptors and neural tube closure.

    PubMed

    Saitsu, Hirotomo

    2017-02-28

    Neural tube defects (NTD) are among the most common human congenital malformations, affecting 0.5-8/1000 of live births. Human clinical trials have shown that periconceptional folate supplementation significantly decreases the occurrence of NTD in offspring. However, the mechanism by which folate acts on NTD remains largely unknown. Folate receptor (Folr) is one of the three membrane proteins that mediate cellular uptake of folates. Recent studies suggest that mouse Folr1 (formerly referred to as Fbp1) is essential for neural tube closure. Therefore, we examined spatial and temporal expression patterns of Folr1 in developing mouse embryos, showing a close association between Folr1 and anterior neural tube closure. Transient transgenic analysis was performed using lacZ as a reporter; we identified a 1.1-kb enhancer that directs lacZ expression in the neural tube and optic vesicle in a manner that is similar to endogenous Folr1. The 1.1-kb enhancer sequences were highly conserved between humans and mice, suggesting that human FOLR1 is associated with anterior neural tube closure in humans. Several experimental studies in mice and human epidemiological and genetics studies have suggested that folate receptor abnormalities are involved in a portion of human NTDs, although the solo defect of FOLR1 did not cause NTD.

  3. Hospital admissions before and after shipyard closure.

    PubMed Central

    Iversen, L.; Sabroe, S.; Damsgaard, M. T.

    1989-01-01

    To determine the effect of job loss on health an investigation was made of admissions to hospitals in 887 men five years before and three years after the closure of a Danish shipyard. The control group comprised 441 men from another shipyard. The information on hospital admissions was obtained from the Danish national register of patients. The relative risk of admission in the control group dropped significantly in terms of the number of men admitted from the study group from 1.29 four to five years before closure to 0.74 in the three years after closure. This was especially true of admissions due to accidents (1.33 to 0.46) and diseases of the digestive system (4.53 to 1.03). For diseases of the circulatory system, particularly cardiovascular diseases, the relative risk increased from 0.8 to 1.60, and from 1.0 to 2.6 respectively. These changes in risk of illness after redundancy are probably a consequence of a change from the effects of a high risk work environment to the effects of psychosocial stresses such as job insecurity and unemployment. PMID:2511968

  4. A closure scheme for chemical master equations.

    PubMed

    Smadbeck, Patrick; Kaznessis, Yiannis N

    2013-08-27

    Probability reigns in biology, with random molecular events dictating the fate of individual organisms, and propelling populations of species through evolution. In principle, the master probability equation provides the most complete model of probabilistic behavior in biomolecular networks. In practice, master equations describing complex reaction networks have remained unsolved for over 70 years. This practical challenge is a reason why master equations, for all their potential, have not inspired biological discovery. Herein, we present a closure scheme that solves the master probability equation of networks of chemical or biochemical reactions. We cast the master equation in terms of ordinary differential equations that describe the time evolution of probability distribution moments. We postulate that a finite number of moments capture all of the necessary information, and compute the probability distribution and higher-order moments by maximizing the information entropy of the system. An accurate order closure is selected, and the dynamic evolution of molecular populations is simulated. Comparison with kinetic Monte Carlo simulations, which merely sample the probability distribution, demonstrates this closure scheme is accurate for several small reaction networks. The importance of this result notwithstanding, a most striking finding is that the steady state of stochastic reaction networks can now be readily computed in a single-step calculation, without the need to simulate the evolution of the probability distribution in time.

  5. A closure scheme for chemical master equations

    PubMed Central

    Smadbeck, Patrick; Kaznessis, Yiannis N.

    2013-01-01

    Probability reigns in biology, with random molecular events dictating the fate of individual organisms, and propelling populations of species through evolution. In principle, the master probability equation provides the most complete model of probabilistic behavior in biomolecular networks. In practice, master equations describing complex reaction networks have remained unsolved for over 70 years. This practical challenge is a reason why master equations, for all their potential, have not inspired biological discovery. Herein, we present a closure scheme that solves the master probability equation of networks of chemical or biochemical reactions. We cast the master equation in terms of ordinary differential equations that describe the time evolution of probability distribution moments. We postulate that a finite number of moments capture all of the necessary information, and compute the probability distribution and higher-order moments by maximizing the information entropy of the system. An accurate order closure is selected, and the dynamic evolution of molecular populations is simulated. Comparison with kinetic Monte Carlo simulations, which merely sample the probability distribution, demonstrates this closure scheme is accurate for several small reaction networks. The importance of this result notwithstanding, a most striking finding is that the steady state of stochastic reaction networks can now be readily computed in a single-step calculation, without the need to simulate the evolution of the probability distribution in time. PMID:23940327

  6. 324 Building radiochemical engineering cells, high-level vault, low-level vault, and associated areas closure plan

    SciTech Connect

    Barnett, J.M.

    1998-03-25

    The Hanford Site, located adjacent to and north of Richland, Washington, is operated by the US Department of Energy, Richland Operations Office (RL). The 324 Building is located in the 300 Area of the Hanford Site. The 324 Building was constructed in the 1960s to support materials and chemical process research and development activities ranging from laboratory/bench-scale studies to full engineering-scale pilot plant demonstrations. In the mid-1990s, it was determined that dangerous waste and waste residues were being stored for greater than 90 days in the 324 Building Radiochemical Engineering Cells (REC) and in the High-Level Vault/Low-Level Vault (HLV/LLV) tanks. [These areas are not Resource Conservation and Recovery Act of 1976 (RCRA) permitted portions of the 324 Building.] Through the Hanford Federal Facility Agreement and Consent Order (Tri-Party Agreement) Milestone M-89, agreement was reached to close the nonpermitted RCRA unit in the 324 Building. This closure plan, managed under TPA Milestone M-20-55, addresses the identified building areas targeted by the Tri-Party Agreement and provides commitments to achieve the highest degree of compliance practicable, given the special technical difficulties of managing mixed waste that contains high-activity radioactive materials, and the physical limitations of working remotely in the areas within the subject closure unit. This closure plan is divided into nine chapters. Chapter 1.0 provides the introduction, historical perspective, 324 Building history and current mission, and the regulatory basis and strategy for managing the closure unit. Chapters 2.0, 3.0, 4.0, and 5.0 discuss the detailed facility description, process information, waste characteristics, and groundwater monitoring respectively. Chapter 6.0 deals with the closure strategy and performance standard, including the closure activities for the B-Cell, D-Cell, HLV, LLV; piping and miscellaneous associated building areas. Chapter 7.0 addresses the

  7. Closure or Non-Closure of Peritoneum in Cesarean Section: Outcomes of Short-Term Complications

    PubMed Central

    Tabasi, Zohreh; Mahdian, Mehrdad; Abedzadeh-Kalahroudi, Masoumeh

    2013-01-01

    Background Cesarean section (CS) is one of the most frequently performed surgical procedures worldwide. The complications following a CS include fever, wound infection, post-operative pain and bleeding which are not usually found in a normal vaginal delivery. Traditionally, suturing of peritoneal layers for CS patients has been done, but in some studies it has been shown that this procedure could be eliminated without affecting the rate of morbidity. Objectives The objective of this study was to assess the short-term outcomes of two different cesarean delivery techniques. Patients and Methods A total of 100 cases who underwent CS were randomly assigned equally to either closure of both the visceral and parietal peritoneum or no peritoneum closure. Duration of operation, pain scores, analgesic requirements, alterations in hemoglobin levels and febrile morbidity were assessed accordingly. Results Pain scores, analgesic requirements assessed at 24 hours and operation duration were significantly lower in the non-closure group as compared to the closure group. Febrile conditions and changes in hemoglobin levels were similar in both groups. Conclusions Non-closure of both visceral and the parietal peritoneum when performing a CS produces a significant reduction in pain, fewer analgesic requirements and a shorter operation duration without increasing the febrile morbidity and changes in hemoglobin levels as compared to the standard methods. PMID:24396774

  8. Closure Report for Corrective Action Unit 540: Spill Sites, Nevada Test Site, Nevada, Rev. No.: 0

    SciTech Connect

    McClure, Lloyd

    2006-10-01

    This Closure Report (CR) presents information supporting the closure of Corrective Action Unit (CAU) 540: Spill Sites, Nevada Test Site, Nevada. This CR complies with the requirements of the 'Federal Facility Agreement and Consent Order' (1996) that was agreed to by the State of Nevada, the U.S. Department of Energy, and the U.S. Department of Defense. Corrective Action Unit 540 is located within Areas 12 and 19 of the Nevada Test Site and is comprised of the following Corrective Action Sites (CASs): CAS 12-44-01, ER 12-1 Well Site Release; CAS 12-99-01, Oil Stained Dirt; CAS 19-25-02, Oil Spill; CAS 19-25-04, Oil Spill; CAS 19-25-05, Oil Spill; CAS 19-25-06, Oil Spill; CAS 19-25-07, Oil Spill; CAS 19-25-08, Oil Spills (3); and CAS 19-44-03, U-19bf Drill Site Release. The purpose of this CR is to provide documentation supporting recommendations of no further action for the CASs within CAU 540. To achieve this, the following actions were performed: (1) Reviewed the current site conditions, including the concentration and extent of contamination; (2) Performed closure activities to address the presence of substances regulated by 'Nevada Administrative Code' 445A.2272 (NAC, 2002); and (3) Documented Notice of Completion and closure of CAU 540 issued by the Nevada Division of Environmental Protection.

  9. Clinical outcomes of peripheral iridotomy in patients with the spectrum of chronic primary angle closure.

    PubMed

    Cumba, Ricardo J; Nagi, Kundandeep S; Bell, Nicholas P; Blieden, Lauren S; Chuang, Alice Z; Mankiewicz, Kimberly A; Feldman, Robert M

    2013-01-01

    Purpose. To evaluate outcomes of peripheral iridotomy (PI) for initial management of primary angle closure suspects (PACS), chronic primary angle closure (CPAC), and chronic primary angle closure glaucoma (CPACG). Patients and Methods. Seventy-nine eyes with PACS, CPAC, or CPACG and better than 20/50 visual acuity that underwent PI as initial management were included. Eyes with previous acute angle closure attacks, laser trabeculoplasties, surgeries, or intraocular injections were excluded. Additional treatments, glaucomatous progression, intraocular pressure, visual acuity, and the number of medications were evaluated. Results. The mean followup was 57.1 ± 29.0 months (range 13.8-150.6 months). Sixty-eight eyes (86.1%) underwent additional medical, laser, or surgical treatment. Forty eyes (50.6%) underwent lens extraction due to reduced visual acuity. The mean 10× logMAR visual acuity score for all patients significantly declined from 0.94 ± 1.12 at baseline to 1.83 ± 3.49 (N = 79, P = 0.0261) at the last followup. Conclusions. Most patients who undergo PI for CPAC spectrum will require additional intervention for either IOP lowering or improvement of visual acuity. This suggests that a procedure that not only deepens the angle but also lowers IOP and improves visual acuity would be desirable as further intervention could be avoided. Evaluation of techniques that achieve all 3 goals is warranted.

  10. Efficacy of the Ovesco Clip for Closure of Endoscope Related Perforations

    PubMed Central

    Angsuwatcharakon, Phonthep; Prueksapanich, Piyapan; Kongkam, Pradermchai; Rattanachu-ek, Thawee; Sottisuporn, Jaksin; Rerknimitr, Rungsun

    2016-01-01

    Aim. To study the efficacy and other treatment outcomes of Ovesco clip closure of iatrogenic perforation. Methods. Retrospective study from 3 tertiary-care hospitals in Thailand. Patients with iatrogenic perforation who underwent immediate endoscopic closure by Ovesco clip were included. Patients' demographic data, perforation size, number of Ovesco clips used, fasting day, length of hospital stay, success rates, and complication rate were recorded. Technical success was defined as closure achievement during endoscopic procedure and clinical success was defined as the patient can be discharged without the need of additional surgical or radiological intervention. Results. There were 6 iatrogenic perforations in 2 male and 4 female patients. The median age was 59 years (range 39–78 years). The locations of perforation were 5 duodenal walls and 1 rectosigmoid junction. The median perforation size was 13 mm (range 10–40 mm). The technical success was 100% and the clinical success was 83.3%. The success rates per locations were 100% in colon and 80% in duodenum, respectively. The median fasting time was 5 days (range 1–10 days) and the median length of hospital stay was 10 days (range 2–22 days). There was no mortality in any. Conclusion. Ovesco clip seems to be an effective and safe tool for a closure of iatrogenic perforation. PMID:27293368

  11. Regulation of Fusion Pore Closure and Compound Exocytosis in Neuroendocrine PC12 Cells by SCAMP1

    PubMed Central

    Zhang, Jie; Castle, David

    2011-01-01

    During exocytosis, neuroendocrine cells can achieve partial release of stored secretory products from dense core vesicles (DCVs) by coupling endocytosis directly at fusion sites and without full discharge. The physiological role of partial secretion is of substantial interest. Much is known about SNARE-mediated initiation of exocytosis and dynamin-mediated completion of endocytosis, but little is known about coupling events. We have used real-time microscopy to examine the role of secretory carrier membrane protein SCAMP1 in exo-endocytic coupling in PC12 cells. While reduced SCAMP1 expression is known to impede dilation of newly opened fusion pores during onset of DCV exocytosis, we now show that SCAMP1 deficiency also inhibits closure of fusion pores after they have opened. Inhibition causes accumulation of fusion figures at the plasma membrane. Closure is recovered by restoring expression and accelerated slightly by overexpression. Interestingly, inhibited pore closure resulting from loss of SCAMP1 appears to increase secondary fusion of DCVs to already-fused DCVs (compound exocytosis). Unexpectedly, reinternalization of expanded DCV membranes following compound exocytosis appears to proceed normally in SCAMP1-deficient cells. SCAMP1’s apparent dual role in facilitating dilation and closure of fusion pores implicates its function in exo-endocytic coupling and in the regulation of partial secretion. Secondarily, SCAMP1 may serve to limit the extent of compound exocytosis. PMID:21272170

  12. Underground storage tank 291-D1U1: Closure plan

    SciTech Connect

    Mancieri, S.; Giuntoli, N.

    1993-09-01

    The 291-D1U1 tank system was installed in 1983 on the north side of Building 291. It supplies diesel fuel to the Building 291 emergency generator and air compressor. The emergency generator and air compressor are located southwest and southeast, respectively, of the tank (see Appendix B, Figure 2). The tank system consists of a single-walled, 2,000- gallon, fiberglass tank and a fuel pump system, fill pipe, vent pipe, electrical conduit, and fuel supply and return piping. The area to be excavated is paved with asphalt and concrete. It is not known whether a concrete anchor pad is associated with this tank. Additionally, this closure plan assumes that the diesel tank is below the fill pad. The emergency generator and air compressor for Building 291 and its associated UST, 291-D1U1, are currently in use. The generator and air compressor will be supplied by a temporary above-ground fuel tank prior to the removal of 291-D1U1. An above-ground fuel tank will be installed as a permanent replacement for 291-D1U1. The system was registered with the State Water Resources Control Board on June 27, 1984, as 291-41D and has subsequently been renamed 291-D1U1. Figure 1 (see Appendix B) shows the location of the 291-D1U1 tank system in relation to the Lawrence Livermore National Laboratory (LLNL). Figure 2 (see Appendix B) shows the 291-D1U1 tank system in relation to Building 291. Figure 3 (see Appendix B) shows a plan view of the 291-D1U1 tank system.

  13. Colostomy closure: how to avoid complications

    PubMed Central

    Levitt, Marc A.; Lawal, Taiwo A.; Peña, Alberto

    2010-01-01

    Purpose Colostomy is an operation frequently performed in pediatric surgery. Despite its benefits, it can produce significant morbidity. In a previous publication we presented our experience with the errors and complications that occurred during cases of colostomy creation. We now have focused in the morbidity related to the colostomy closure. The technical details that might have contributed to the minimal morbidity we experienced are described. Methods The medical records of 649 patients who underwent colostomy closure over a 28-year period were retrospectively reviewed looking for complications following these procedures. Our perioperative protocol for colostomy closure consisted in: clear fluids by mouth and repeated proximal stoma irrigations 24 h prior to the operation. Administration of IV antibiotics during anesthesia induction and continued for 48 h. Meticulous surgical technique that included: packing of the proximal stoma, plastic drape to immobilize the surgical field, careful hemostasis, emphasis in avoiding contamination, cleaning the edge of the stomas to allow a good 2-layer, end-to-end anastomosis with separated long-term absorbable sutures, generous irrigation of the peritoneal cavity and subsequent layers with saline solution, closure by layers to avoid dead space, and avoidance of hematomas. No drains and no nasogastric tubes were used. Oral fluids were started the day after surgery and patients were discharged 48–72 h after the operation. Results The original diagnoses of the patients were: anorectal malformation (583), Hirschsprung’s disease (53), and others (13). 10 patients (1.5%) had complications: 6 had intestinal obstruction (5 due to small bowel adhesions, 1 had temporary delay of the function of the anastomosis due to a severe size discrepancy between proximal and distal stoma with a distal microcolon) and 4 incisional hernias. There were no anastomotic dehiscences or wound infection. There was no bleeding, no anastomotic

  14. Subcuticular closure versus Dermabond: a prospective randomized trial.

    PubMed

    Switzer, Erin F; Dinsmore, Robert C; North, James H

    2003-05-01

    2-Octylcyanoacrylate tissue adhesive (Dermabond, Ethicon, Inc, Somerville, NJ) is being used successfully for closure of minor lacerations. To date, however, there have been no studies evaluating its use in the operating room for surgical incisions. We conducted a prospective randomized trial to compare the closure of inguinal herniorrhaphy incisions using 2-octylcyanoacrylate tissue adhesive (Dermabond) with closures using 4-0 Monocryl (Ethicon, Inc) in a running subcuticular closure. A total of 46 incisions were randomized at the time of closure. Of these incisions 24 were randomized to Dermabond closure (TA) and 22 were randomized to subcuticular closure (SC). Performance measures included: time for closure, wound complications, and cosmesis. Cosmesis was evaluated by blinded evaluation of photographs of the incisions taken 4 weeks after surgery. Closure times for the TA group were faster than in the SC group (mean of 155 vs 286 seconds; P < 0.001). Wound complications were higher in the TA group (P = 0.045). Cosmesis was also felt to be better in the SC group with a score of 4.2 versus 3.88, but this did not reach statistical significance. Although the use of Dermabond did result in faster wound cultures it also resulted in an increase in wound complications. The difference in mean cosmetic score for each group was not statistically significant but trended toward better scores in the SC group. Based on these findings we do not feel Dermabond is an acceptable alternative to subcuticular suture closure in inguinal herniorrhaphy incisions.

  15. Haemostasis with the FISH Vascular Closure Device after 6 French Transfemoral Accesses in Interventional Radiology: Clinical Results

    PubMed Central

    Kamusella, Peter C.; Lüdtke, Christopher W.; Scheer, Fabian; Andresen, Reimer

    2017-01-01

    Introduction Endovascular procedures have increased for different indications over the recent years. To achieve a safe haemostasis after arterial puncture and for more comfort for the patients different vascular closure devices have been developed. Aim To evaluate the effectiveness and safety of a percutaneous closure system based on a matrix patch for achieving haemostasis. Materials and Methods In this study from 2014 to 2015 a percutaneous vascular closure system Femoral Introducer Sheath and Haemostasis (FISH) was used in 54 patients (mean age 69.0±10.7 years), in an antegrade and retrograde technique within the context of an angiographic intervention. The system was used in conjunction with transfemoral approaches with a sheath size of 6F. Postinterventionally (on the following day and after 6 weeks), follow-up was conducted clinically and using colour coded ultrasound. Results Immediate haemostasis was achieved in 50/54 patients (92.6 %). In 4 cases, an immediate haemostasis was not achieved. In these cases, manual compression was successful. There was one major complication, a retroperitoneal bleeding requiring transfusion. Minor complications were not observed. Conclusion Safe and effective haemostasis is possible with the percutaneous FISH closure system at puncture sizes of 6 F. An immediate re-puncture after using FISH is possible. PMID:28384956

  16. Alternatives to Rare Earth Permanent Magnets for Energy Harvesting Applications

    NASA Astrophysics Data System (ADS)

    Khazdozian, Helena; Hadimani, Ravi; Jiles, David

    Direct-drive permanent magnet generators (DDPMGs) offer increased reliability and efficiency over the more commonly used geared doubly-fed induction generator, yet are only employed in less than 1 percent of utility scale wind turbines in the U.S. One major barrier to increased deployment of DDPMGs in the U.S. wind industry is NdFeB permanent magnets (PMs), which contain critical rare earth elements Nd and Dy. To allow for the use of rare earth free PMs, the magnetic loading, defined as the average magnetic flux density over the rotor surface, must be maintained. Halbach cylinders are employed in 3.5kW Halbach PMGs (HPMGs) of varying slot-to-pole ratio to concentrate the magnetic flux output by a lower energy density PM over the rotor surface. We found that for high pole and slot number, the increase in magnetic loading is sufficient to allow for the use of strontium iron oxide hard ferrite PMs and achieved rated performance. Joule losses in the stator windings were found to increase for the hard ferrite PMs due to increased inductance in the stator windings. However, for scaling of the HPMG designs to 3MW, rated performance and high efficiency were achieved, demonstrating the potential for elimination for rare earth PMs in commercial scale wind turbines. This work was supported by the National Science Foundation under Grant No. 1069283 and a Barbara and James Palmer Endowment at Iowa State University.

  17. Mechanics of Wound Closure: Emerging Tape-Based Wound Closure Technology vs. Traditional Methods

    PubMed Central

    Ichiryu, Kei; Kefel, Pelin; Keller, Juergen; Grice, Jon; Belson, Ori; Storne, Eric; Safa, Bauback

    2016-01-01

    To date, there is still a lack of understanding of how wound closure methods perform comparatively under daily bodily movement during the course of healing and how they affect the mechanics of healing. The present study is a first step in understanding and objectively quantifying the gap. The study provides both a new method of metrology for noninvasive evaluation of skin mechanics at the onset of wound healing and an emerging tape-based wound closure technology. The latter shows better performance with respect to commonly used staples and sutures, holding the wound intact and providing uniform mechanical support across the incision. PMID:27882274

  18. Closure plan for Solid Waste Storage Area 6: Volume 1, Closure plan

    SciTech Connect

    Not Available

    1988-09-01

    This Closure Plan for Solid Waste Storage Area 6 (SWSA 6) a disposal area for low-level radioactive wastes and hazardous materials, of the US Department of Energy (DOE) Oak Ridge National Laboratory (ORNL) describes how portions of SWSA 6 will be closed under Resource Conservation and Recovery Act (RCRA) Interim Status per 40 CFR 265 Subpart G (TN Rule 1200-1-11-.05(7)). An overview is provided of activities necessary for final closure and corrective measures for all of SWSA 6. Results of surface waters and groundwater sampling are provided.

  19. Permanent magnet materials and their application

    SciTech Connect

    Campbell, P.

    1994-12-31

    Permanent magnets are of great industrial importance in industrial drives, consumer products, computers, and automobiles. Since 1970, new classes of magnet materials have been developed. This book reviews the older and newer materials and is presented as a comprehensive design text for permanent magnets and their applications. After an initial chapter on the fundamentals of magnetism, the author discusses magnetic physics considerations specific to permanent magnets and describes the fabrications and characteristics of commercial materials: alnico, samarium-cobalt, ferrite, and neodymium-iron-boron. Thermal stability, magnet design procedures, magnetic field analysis methods, and measurement methods are discussed in subsequent chapters, followed by a concluding chapter reviewing commercial and industrial products that use permanent magnets. The chapter on thermal properties of magnet materials is of particular interest, bringing together information not readily found elsewhere. The review of applications is also deserving of attention, specifically the sections on motors and actuators. Although particle accelerator applications are discussed, the use of permanent magnet sextuples in modern ECR ion sources is not mentioned.

  20. Cylindrical Hall Thrusters with Permanent Magnets

    SciTech Connect

    Raitses, Yevgeny; Merino, Enrique; Fisch, Nathaniel J.

    2010-10-18

    The use of permanent magnets instead of electromagnet coils for low power Hall thrusters can offer a significant reduction of both the total electric power consumption and the thruster mass. Two permanent magnet versions of the miniaturized cylindrical Hall thruster (CHT) of different overall dimensions were operated in the power range of 50W-300 W. The discharge and plasma plume measurements revealed that the CHT thrusters with permanent magnets and electromagnet coils operate rather differently. In particular, the angular ion current density distribution from the permanent magnet thrusters has an unusual halo shape, with a majority of high energy ions flowing at large angles with respect to the thruster centerline. Differences in the magnetic field topology outside the thruster channel and in the vicinity of the channel exit are likely responsible for the differences in the plume characteristics measured for the CHTs with electromagnets and permanent magnets. It is shown that the presence of the reversing-direction or cusp-type magnetic field configuration inside the thruster channel without a strong axial magnetic field outside the thruster channel does not lead to the halo plasma plume from the CHT. __________________________________________________

  1. Cylindrical Hall thrusters with permanent magnets

    NASA Astrophysics Data System (ADS)

    Raitses, Yevgeny; Merino, Enrique; Fisch, Nathaniel J.

    2010-11-01

    The use of permanent magnets instead of electromagnet coils for low power Hall thrusters can offer a significant reduction in both the total electric power consumption and the thruster mass. Two permanent magnet versions of the miniaturized cylindrical Hall thruster (CHT) of different overall dimensions were operated in the power range of 50-300 W. The discharge and plasma plume measurements revealed that the CHT thrusters with permanent magnets and electromagnet coils operate rather differently. In particular, the angular ion current density distribution from the permanent magnet thrusters has an unusual halo shape, with a majority of high energy ions flowing at large angles with respect to the thruster centerline. Differences in the magnetic field topology outside the thruster channel and in the vicinity of the channel exit are likely responsible for the differences in the plume characteristics measured for the CHTs with electromagnets and permanent magnets. It is shown that the presence of the reversing-direction or cusp-type magnetic field configuration inside the thruster channel without a strong axial magnetic field outside the thruster channel does not lead to the halo plasma plume from the CHT.

  2. Update on Permanent Contraception Options for Women

    PubMed Central

    Patil, Eva; Jensen, Jeffrey T.

    2015-01-01

    Purpose of review Permanent methods are the most commonly used contraceptive options worldwide. Even with the increase in popularity and accessibility of long-acting reversible methods, there remains high demand for permanent options, especially among women in developing countries. Recent findings Traditional methods of permanent contraception (PC), such as post-partum tubal ligation and interval surgical tubal occlusion or electrocautery by mini-laparotomy or laparoscopy are safe and highly effective. Bilateral total salpingectomy for ovarian cancer risk reduction is currently being investigated. Hysteroscopic tubal occlusion reduces or eliminates the need for anesthesia, but requires surgical training and specialized equipment. Alternative PC methods are being explored including immediately effective hysteroscopic methods, and non-surgical permanent contraception (NSPC) methods that have the potential to improve access and reduce cost. Summary PC methods are an important part of the contraceptive methods mix designed to meet the needs of women who have completed desired family size or wish never to become pregnant. Current surgical approaches to permanent contraception are safe and highly effective. The development of a highly effective nonsurgical approach could simplify the provision of PC. PMID:26406934

  3. Aerosol activation properties and CCN closure during TCAP

    NASA Astrophysics Data System (ADS)

    Mei, F.; Tomlinson, J. M.; Shilling, J. E.; Wilson, J. M.; Zelenyuk, A.; Chand, D.; Comstock, J. M.; Hubbe, J.; Berg, L. K.; Schmid, B.

    2013-12-01

    The indirect effects of atmospheric aerosols currently remain the most uncertain components in forcing of climate change over the industrial period (IPCC, 2007). This large uncertainty is partially due to our incomplete understanding of the ability of particles to form cloud droplets under atmospherically relevant supersaturation. In addition, there is a large uncertainty in the aerosol optical depth (AOD) simulated by climate models near the North American coast and a wide variety in the types of clouds are observed over this region. The goal of the US Department of Energy Two Column Aerosol Project (TCAP) is to understand the processes responsible for producing and maintaining aerosol distributions and associated radiative and cloud forcing off the coast of North America. During the TCAP study, aerosol total number concentration, cloud condensation nuclei (CCN) spectra and aerosol chemical composition were in-situ measured from the DOE Gulfstream 1 (G-1) research aircraft during two Intensive Operations Periods (IOPs), one conducted in July 2012 and the other in February 2013. An overall aerosol size distribution was achieved by merging the observations from several instruments, including Ultra High Sensitivity Aerosol Spectrometer - Airborne (UHSAS-A, DMT), Passive Cavity Aerosol Spectrometer Probe (PCASP-200, DMT), and Cloud Aerosol Spectrometer (CAS, DMT). Aerosol chemical composition was characterized using a high-resolution time-of-flight aerosol mass spectrometer (HR-ToF-AMS, Aerodyne Inc.) and single particle mass spectrometer, mini-SPLAT. Based on the aerosol size distribution, CCN number concentration (characterized by a DMT dual column CCN counter with a range from 0.1% to 0.4%), and chemical composition, a CCN closure was obtained. The sensitivity of CCN closure to organic hygroscopicity was investigated. The differences in aerosol/CCN properties between two columns, and between two phases, will be discussed.

  4. 38 CFR 62.11 - Participants-occupying permanent housing.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... permanent housing. 62.11 Section 62.11 Pensions, Bonuses, and Veterans' Relief DEPARTMENT OF VETERANS... permanent housing. (a) Occupying permanent housing. A very low-income veteran family will be considered to be occupying permanent housing if the very low-income veteran family: (1) Is residing in...

  5. 31 CFR 515.335 - Permanent resident alien.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 31 Money and Finance:Treasury 3 2011-07-01 2011-07-01 false Permanent resident alien. 515.335... Definitions § 515.335 Permanent resident alien. As used in § 515.208, the term permanent resident alien means an alien lawfully admitted for permanent residence into the United States....

  6. 31 CFR 515.335 - Permanent resident alien.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 31 Money and Finance:Treasury 3 2012-07-01 2012-07-01 false Permanent resident alien. 515.335... Definitions § 515.335 Permanent resident alien. As used in § 515.208, the term permanent resident alien means an alien lawfully admitted for permanent residence into the United States....

  7. 31 CFR 515.335 - Permanent resident alien.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 31 Money and Finance:Treasury 3 2014-07-01 2014-07-01 false Permanent resident alien. 515.335... Definitions § 515.335 Permanent resident alien. As used in § 515.208, the term permanent resident alien means an alien lawfully admitted for permanent residence into the United States....

  8. 31 CFR 515.335 - Permanent resident alien.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 31 Money and Finance:Treasury 3 2013-07-01 2013-07-01 false Permanent resident alien. 515.335... Definitions § 515.335 Permanent resident alien. As used in § 515.208, the term permanent resident alien means an alien lawfully admitted for permanent residence into the United States....

  9. 31 CFR 515.335 - Permanent resident alien.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 31 Money and Finance: Treasury 3 2010-07-01 2010-07-01 false Permanent resident alien. 515.335... Definitions § 515.335 Permanent resident alien. As used in § 515.208, the term permanent resident alien means an alien lawfully admitted for permanent residence into the United States....

  10. Modeling the Interactions Between Multiple Crack Closure Mechanisms at Threshold

    NASA Technical Reports Server (NTRS)

    Newman, John A.; Riddell, William T.; Piascik, Robert S.

    2003-01-01

    A fatigue crack closure model is developed that includes interactions between the three closure mechanisms most likely to occur at threshold; plasticity, roughness, and oxide. This model, herein referred to as the CROP model (for Closure, Roughness, Oxide, and Plasticity), also includes the effects of out-of plane cracking and multi-axial loading. These features make the CROP closure model uniquely suited for, but not limited to, threshold applications. Rough cracks are idealized here as two-dimensional sawtooths, whose geometry induces mixed-mode crack- tip stresses. Continuum mechanics and crack-tip dislocation concepts are combined to relate crack face displacements to crack-tip loads. Geometric criteria are used to determine closure loads from crack-face displacements. Finite element results, used to verify model predictions, provide critical information about the locations where crack closure occurs.

  11. 3718-F Alkali Metal Treatment and Storage Facility Closure Plan

    SciTech Connect

    1991-12-01

    Since 1987, Westinghouse Hanford Company has been a major contractor to the U.S. Department of Energy-Richland Operations Office and has served as co-operator of the 3718-F Alkali Metal Treatment and Storage Facility, the waste management unit addressed in this closure plan. The closure plan consists of a Part A Dangerous waste Permit Application and a RCRA Closure Plan. An explanation of the Part A Revision (Revision 1) submitted with this document is provided at the beginning of the Part A section. The closure plan consists of 9 chapters and 5 appendices. The chapters cover: introduction; facility description; process information; waste characteristics; groundwater; closure strategy and performance standards; closure activities; postclosure; and references.

  12. Prolonged Eyelid Closure Episodes during Sleep Deprivation in Professional Drivers

    PubMed Central

    Alvaro, Pasquale K.; Jackson, Melinda L.; Berlowitz, David J.; Swann, Philip; Howard, Mark E.

    2016-01-01

    Study Objectives: Real life ocular measures of drowsiness use average blink duration, amplitude and velocity of eyelid movements to reflect drowsiness in drivers. However, averaged data may conceal the variability in duration of eyelid closure episodes, and more prolonged episodes that indicate higher levels of drowsiness. The current study aimed to describe the frequency and duration of prolonged eyelid closure episodes during acute sleep deprivation. Methods: Twenty male professional drivers (mean age ± standard deviation = 41.9 ± 8.3 years) were recruited from the Transport Workers Union newsletter and newspaper advertisements in Melbourne, Australia. Each participant underwent 24 hours of sleep deprivation and completed a simulated driving task (AusEd), the Psychomotor Vigilance Task, and the Karolinska Sleepiness Scale. Eyelid closure episodes during the driving task were recorded and analyzed manually from digital video recordings. Results: Eyelid closure episodes increased in frequency and duration with a median of zero s/h of eyelid closure after 3 h increasing to 34 s/h after 23 h awake. Eyelid closure episodes were short and infrequent from 3 to 14 h of wakefulness. After 17 h of sleep deprivation, longer and more frequent eyelid closure episodes began to occur. Episodes lasting from 7 seconds up to 18 seconds developed after 20 h of wakefulness. Length of eyelid closure episodes was moderately to highly correlated with the standard deviation of lateral lane position, braking reaction time, crashes, impaired vigilance, and subjective sleepiness. Conclusions: The frequency and duration of episodes of prolonged eyelid closure increases during acute sleep deprivation, with very prolonged episodes after 17 hours awake. Automated devices that assess drowsiness using averaged measures of eyelid closure episodes need to be able to detect prolonged eyelid closure episodes that occur during more severe sleep deprivation. Citation: Alvaro PK, Jackson ML

  13. Combination Therapy Accelerates Diabetic Wound Closure

    PubMed Central

    Allen Jr., Robert J.; Soares, Marc A.; Haberman, Ilyse D.; Szpalski, Caroline; Schachar, Jeffrey; Lin, Clarence D.; Nguyen, Phuong D.; Saadeh, Pierre B.; Warren, Stephen M.

    2014-01-01

    Background Non-healing foot ulcers are the most common cause of non-traumatic amputation and hospitalization amongst diabetics in the developed world. Impaired wound neovascularization perpetuates a cycle of dysfunctional tissue repair and regeneration. Evidence implicates defective mobilization of marrow-derived progenitor cells (PCs) as a fundamental cause of impaired diabetic neovascularization. Currently, there are no FDA-approved therapies to address this defect. Here we report an endogenous PC strategy to improve diabetic wound neovascularization and closure through a combination therapy of AMD3100, which mobilizes marrow-derived PCs by competitively binding to the cell surface CXCR4 receptor, and PDGF-BB, which is a protein known to enhance cell growth, progenitor cell migration and angiogenesis. Methods and Results Wounded mice were assigned to 1 of 5 experimental arms (n = 8/arm): saline treated wild-type, saline treated diabetic, AMD3100 treated diabetic, PDGF-BB treated diabetic, and AMD3100/PDGF-BB treated diabetic. Circulating PC number and wound vascularity were analyzed for each group (n = 8/group). Cellular function was assessed in the presence of AMD3100. Using a validated preclinical model of type II diabetic wound healing, we show that AMD3100 therapy (10 mg/kg; i.p. daily) alone can rescue diabetes-specific defects in PC mobilization, but cannot restore normal wound neovascularization. Through further investigation, we demonstrate an acquired trafficking-defect within AMD3100-treated diabetic PCs that can be rescued by PDGF-BB (2 μg; topical) supplementation within the wound environment. Finally, we determine that combination therapy restores diabetic wound neovascularization and accelerates time to wound closure by 40%. Conclusions Combination AMD3100 and PDGF-BB therapy synergistically improves BM PC mobilization and trafficking, resulting in significantly improved diabetic wound closure and neovascularization. The success of this

  14. A permanent-magnet rotor for a high-temperature superconducting bearing

    NASA Astrophysics Data System (ADS)

    Mulcahy, T. M.; Hull, J. R.; Uherka, K. L.; Abboud, R. G.; Wise, J. H.; Carnegie, D. W.

    1995-06-01

    Design, fabrication, and performance, of a 1/3-m dia., 10-kg flywheel rotor with only one bearing is discussed. To achieve low-loss energy storage, the rotor's segmented-ring permanent-magnet (PM) is optimized for levitation and circumferential homogeneity. The magnet's carbon composite bands enable practical energy storage.

  15. Early Intervention for Children with Permanent Hearing Loss: Finishing the EHDI Revolution

    ERIC Educational Resources Information Center

    White, Karl R.

    2006-01-01

    The value of identifying permanent hearing loss during the first few months of life and providing effective treatment to ameliorate or even eliminate the negative consequences has been recognized for many decades. Unfortunately, improvements in achieving this goal were very gradual until the early 1990s. At that time, the combination of…

  16. Maximizing the Performance and Job-Related Behaviors of Contract and Permanent IT Workers

    ERIC Educational Resources Information Center

    Pai, Tanusree

    2010-01-01

    As the use of contracting for Information Technology (IT) services steadily increases, IT managers are challenged with reconciling the need for flexibility achieved through the use of contract workers, with the need to understand the factors that maximize the performance and behaviors of contract and permanent IT workers. While several research…

  17. Reversible Closure of the Ductus Arteriosus.

    PubMed

    Pozzi, Marco; Quarti, Andrea; Iezzi, Federica

    2016-01-01

    There are cases in which ligation of the ductus arteriosus is part of a palliative or reparative procedure where the opportunity to reopen the ductus in the early period after surgery could be beneficial. This applies, particularly, to patients with borderline left ventricle in whom a biventricular repair is performed or in small babies in whom a modified Blalock-Taussig shunt is performed, particularly when a very small polytetrafluoroethylene graft is used. Conventional ductal ligation is generally irreversible. We describe a technique of ductal closure that allows easy reopening of the duct in the early postoperative period.

  18. Post Closure Safety of the Morsleben Repository

    SciTech Connect

    Preuss, J.; Eilers, G.; Mauke, R.; Moeller-Hoeppe, N.; Engelhardt, H.-J.; Kreienmeyer, M.; Lerch, C.; Schrimpf, C.

    2002-02-26

    After the completion of detailed studies of the suitability the twin-mine Bartensleben-Marie, situated in the Federal State of Saxony-Anhalt (Germany), was chosen in 1970 for the disposal of low and medium level radioactive waste. The waste emplacement started in 1978 in rock cavities at the mine's fourth level, some 500 m below the surface. Until the end of the operational phase in 1998 in total about 36,800 m{sup 3} of radioactive waste was disposed of. The Morsleben LLW/ILW repository (ERAM) is now under licensing for closure. After completing the licensing procedure the repository will be sealed and backfilled to exclude any undue future impact onto man or the environment. The main safety objective is to protect the biosphere from the harmful effects of the disposed radionuclides. Furthermore, classical or conventional requirements call for ruling out or minimizing other unfavorable environmental effects. The ERAM is an abandoned rock salt and potash mine. As a consequence it has a big void volume, however small parts of the cavities are backfilled with crushed salt rocks. Other goals of the closure concept are therefore a long-term stabilization of the cavities to prevent a dipping or buckling of the ground surface. In addition, groundwater protection shall be assured. For the sealing of the repository a closure concept was developed to ensure compliance with the safety protection objectives. The concept anticipates the backfilling of the cavities with hydraulically setting backfill materials (salt concretes). The reduction of the remaining void volume in the mine causes in the case of brine intrusions a limitation of the leaching processes of the exposed potash seams. However, during the setting process the hydration heat of the concrete will lead to an increase of the temperature and hence to thermally induced stresses of the concrete and the surrounding rocks. Therefore, the influence of these stresses and deformations on the stability of the salt body and

  19. 100-N Area underground storage tank closures

    SciTech Connect

    Rowley, C.A.

    1993-08-01

    This report describes the removal/characterization actions concerning underground storage tanks (UST) at the 100-N Area. Included are 105-N-LFT, 182-N-1-DT, 182-N-2-DT, 182-N-3-DT, 100-N-SS-27, and 100-N-SS-28. The text of this report gives a summary of remedial activities. In addition, correspondence relating to UST closures can be found in Appendix B. Appendix C contains copies of Unusual Occurrence Reports, and validated sampling data results comprise Appendix D.

  20. Permanent isolation surface barrier: Functional performance

    SciTech Connect

    Wing, N.R.

    1993-10-01

    This document presents the functional performance parameters for permanent isolation surface barriers. Permanent isolation surface barriers have been proposed for use at the Hanford Site (and elsewhere) to isolate and dispose of certain types of waste in place. Much of the waste that would be disposed of using in-place isolation techniques is located in subsurface structures, such as solid waste burial grounds, tanks, vaults, and cribs. Unless protected in some way, the wastes could be transported to the accessible environment via transport pathways, such as water infiltration, biointrusion, wind and water erosion, human interference, and/or gaseous release.

  1. Mixed Waste Management Facility closure at the Savannah River Site

    SciTech Connect

    Bittner, M.F.

    1991-08-01

    The Mixed Waste Management Facility of the Savannah River Plant received hazardous and solid low level radioactive wastes from 1972 until 1986. Because this facility did not have a permit to receive hazardous wastes, a Resource Conservation and Recovery Act closure was performed between 1987 and 1990. This closure consisted of dynamic compaction of the waste trenches and placement of a 3-foot clay cap, a 2-foot soil cover, and a vegetative layer. Operations of the waste disposal facility, tests performed to complete the closure design, and the construction of the closure cap are discussed herein.

  2. PERFORMANCE OF A CONTAINMENT VESSEL CLOSURE FOR RADIOACTIVE GAS CONTENTS

    SciTech Connect

    Blanton, P.; Eberl, K.

    2010-07-09

    This paper presents a summary of the design and testing of the containment vessel closure for the Bulk Tritium Shipping Package (BTSP). This package is a replacement for a package that has been used to ship tritium in a variety of content configurations and forms since the early 1970s. The containment vessel closure incorporates features specifically designed for the containment of tritium when subjected to the normal and hypothetical conditions required of Type B radioactive material shipping Packages. The paper discusses functional performance of the containment vessel closure of the BTSP prototype packages and separate testing that evaluated the performance of the metallic C-Rings used in a mock BTSP closure.

  3. Bolt preload selection for pulsed-loaded vessel closures

    SciTech Connect

    Duffey, T.A.; Lewis, B.B.; Bowers, S.M.

    1995-02-01

    Bounding, closed-form solutions are developed for selecting the bolt preload for a square, flat plate closure subjected to a pressure pulse load. The solutions consider the limiting case in which preload is primarily dependent on closure bending response as well as the limiting case in which preload depends on elastic bolt response. The selection of bolt preload is illustrated. Also presented in the paper is a detailed finite element analysis of dynamically loaded, bolted circular closure. The responses of the structure, closure, and bolts are included, and results are obtained for various preloads. The analysis illustrates a method of bolt preload modeling for use in general finite element computer programs.

  4. Simulating school closure policies for cost effective pandemic decision making

    PubMed Central

    2012-01-01

    Background Around the globe, school closures were used sporadically to mitigate the 2009 H1N1 influenza pandemic. However, such closures can detrimentally impact economic and social life. Methods Here, we couple a decision analytic approach with a mathematical model of influenza transmission to estimate the impact of school closures in terms of epidemiological and cost effectiveness. Our method assumes that the transmissibility and the severity of the disease are uncertain, and evaluates several closure and reopening strategies that cover a range of thresholds in school-aged prevalence (SAP) and closure durations. Results Assuming a willingness to pay per quality adjusted life-year (QALY) threshold equal to the US per capita GDP ($46,000), we found that the cost effectiveness of these strategies is highly dependent on the severity and on a willingness to pay per QALY. For severe pandemics, the preferred strategy couples the earliest closure trigger (0.5% SAP) with the longest duration closure (24 weeks) considered. For milder pandemics, the preferred strategies also involve the earliest closure trigger, but are shorter duration (12 weeks for low transmission rates and variable length for high transmission rates). Conclusions These findings highlight the importance of obtaining early estimates of pandemic severity and provide guidance to public health decision-makers for effectively tailoring school closures strategies in response to a newly emergent influenza pandemic. PMID:22713694

  5. Spectrum of Angle Closure, Uveal Effusion Syndrome, and Nanophthalmos

    PubMed Central

    Neale, Matthew; Johnson, Sandra M

    2016-01-01

    Nanophthalmos, uveal effusion syndrome, and acute angle closure glaucoma (ACG) can present as a continuum in a patient, as is described here. This patient's angle closure was thought to be caused by idiopathic uveal effusion syndrome, and while there are no generally accepted diagnosis criteria for nanophthalmos, our patient fulfilled the criteria as defined by Wu.10 To prevent development of further angle closure, the decision was made to do cataract extraction as opposed to medical management. How to cite this article Areiter E, Neale M, Johnson SM. Spectrum of Angle Closure, Uveal Effusion Syndrome, and Nanophthalmos. J Curr Glaucoma Pract 2016;10(3):113-117. PMID:27857491

  6. Advanced Technologies to Improve Closure of Life Support Systems

    NASA Technical Reports Server (NTRS)

    Barta, Daniel J.

    2016-01-01

    As NASA looks beyond the International Space Station toward long-duration, deep space missions away from Earth, the current practice of supplying consumables and spares will not be practical nor affordable. New approaches are sought for life support and habitation systems that will reduce dependency on Earth and increase mission sustainability. To reduce launch mass, further closure of Environmental Control and Life Support Systems (ECLSS) beyond the current capability of the ISS will be required. Areas of particular interest include achieving higher degrees of recycling within Atmosphere Revitalization, Water Recovery and Waste Management Systems. NASA is currently investigating advanced carbon dioxide reduction processes that surpass the level of oxygen recovery available from the Sabatier Carbon Dioxide Reduction Assembly (CRA) on the ISS. Candidate technologies will potentially improve the recovery of oxygen from about 50% (for the CRA) to as much as 100% for technologies who's end product is solid carbon. Improving the efficiency of water recycling and recovery can be achieved by the addition of advanced technologies to recover water from brines and solid wastes. Bioregenerative technologies may be utilized for water reclaimation and also for the production of food. Use of higher plants will simultaneously benefit atmosphere revitalization and water recovery through photosynthesis and transpiration. The level at which bioregenerative technologies are utilized will depend on their comparative requirements for spacecraft resources including mass, power, volume, heat rejection, crew time and reliability. Planetary protection requirements will need to be considered for missions to other solar system bodies.

  7. Surgical closure of postlaryngectomy pharyngocutaneous fistula: a defect based approach.

    PubMed

    Magdy, Emad A

    2008-01-01

    Surgical repair of postlaryngectomy pharyngocutaneous fistula (PCF) can be challenging. Although several studies describe separate reconstruction methods, only few address the variability in defect characteristics and hence flap selection. The current clinical study presents a retrospective review of 19 patients who underwent surgical repair of persistent PCFs, over a 4-year period in a tertiary referral institute by a single primary surgeon. All but one patient were men with a mean age of 61 +/- 10 years. Nine patients had previous unsuccessful attempts for surgical closure. Previous neck irradiation was the most common comorbid condition encountered (52.6%), followed by low hemoglobin level (47.4%), hepatic disease (36.8%) and diabetes mellitus (31.6%). According to defect characteristics, six patients received a local cervical skin procedure, ten patients had reconstructions using the pectoralis major musculocutaneous flap and three patients required a radial forearm free flap repair. All PCFs were eventually successfully closed with no major complications. Patients were followed-up for an average of 19.7 months (range, 5-38 months). Acceptable oral swallowing results were achieved in all but one patient. In conclusion, successful results are achievable in difficult persistent PCF cases with a defect based reconstruction approach kept in mind.

  8. Graded Achievement, Tested Achievement, and Validity

    ERIC Educational Resources Information Center

    Brookhart, Susan M.

    2015-01-01

    Twenty-eight studies of grades, over a century, were reviewed using the argument-based approach to validity suggested by Kane as a theoretical framework. The review draws conclusions about the meaning of graded achievement, its relation to tested achievement, and changes in the construct of graded achievement over time. "Graded…

  9. Accountability in Action: A Comprehensive Guide to Charter School Closure. School Closure Guide

    ERIC Educational Resources Information Center

    Wechtenhiser, Kim, Ed.; Wade, Andrew, Ed.; Lin, Margaret, Ed.

    2011-01-01

    Closing a failing charter school is difficult, but it can be done. In fact, it has been done hundreds of times across the country. However, if you are on the staff or the board of a charter school authorizing agency that is facing a closure decision, the fact that other authorizers have closed schools may be of small comfort. You are facing a…

  10. 40 CFR 264.1202 - Closure and post-closure care.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... closure of a magazine or unit which stored hazardous waste under this subpart, the owner or operator must..., and financial responsibility for magazines or units must meet all of the requirements specified in... it remains in service as a munitions or explosives magazine or storage unit. (b) If, after...

  11. A New Surgical Technique for Closure of Pilonidal Sinus Defects: Triangular Closure Technique

    PubMed Central

    Mutaf, Mehmet; Temel, Metin; Koç, Mustafa Nihat

    2017-01-01

    Background We present a clinical experience with a new local flap procedure, namely the triangular closure technique, for reconstruction of sacrococcygeal skin defects resulting from excision of the pilonidal sinus. Material/Methods In this technique, the defect is surgically converted to a triangle in shape. Then, the triangular defect is closed by transposition of 2 skin flaps designed in an unequal z-plasty manner. Over 6 years, this technique has been used for closure of defects of chronic pilonidal sinus disease in 27 patients (6 females, 21 males). The size of the defect ranged between 3.5 cm and 12 cm in dimension. Results A tension-free defect closure was obtained in all patients. All flaps except one healed with no complications. A mean follow-up of 3.62±1.77 months revealed aesthetically and functionally acceptable results with the obliteration of the natal cleft in all patients. No recurrence was observed in the follow-up period. Conclusions The triangular closure technique was found to be a useful technique for the treatment of pilonidal sinus with favorable results regarding the time before return to work. PMID:28238003

  12. Closure Report for Corrective Action Unit 130: Storage Tanks Nevada Test Site, Nevada, Revision 0

    SciTech Connect

    Alfred Wickline

    2009-03-01

    This Closure Report (CR) presents information supporting the closure of Corrective Action Unit (CAU) 130: Storage Tanks, Nevada Test Site, Nevada. This CR complies with the requirements of the Federal Facility Agreement and Consent Order that was agreed to by the State of Nevada; U.S. Department of Energy (DOE), Environmental Management; U.S. Department of Defense; and DOE, Legacy Management. The corrective action sites (CASs) within CAU 130 are located within Areas 1, 7, 10, 20, 22, and 23 of the Nevada Test Site. Corrective Action Unit 130 is comprised of the following CASs: • 01-02-01, Underground Storage Tank • 07-02-01, Underground Storage Tanks • 10-02-01, Underground Storage Tank • 20-02-03, Underground Storage Tank • 20-99-05, Tar Residue • 22-02-02, Buried UST Piping • 23-02-07, Underground Storage Tank This CR provides documentation supporting the completed corrective action investigations and provides data confirming that the closure objectives for CASs within CAU 130 were met. To achieve this, the following actions were performed: • Reviewed the current site conditions, including the concentration and extent of contamination. • Implemented any corrective actions necessary to protect human health and the environment. • Properly disposed of corrective action and investigation-derived wastes. From August 4 through September 30, 2008, closure activities were performed as set forth in the Streamlined Approach for Environmental Restoration Plan for CAU 130, Storage Tanks, Nevada Test Site, Nevada. The purposes of the activities as defined during the data quality objectives process were: • Determine whether contaminants of concern (COCs) are present. • If COCs are present, determine their nature and extent, implement appropriate corrective actions, confirm that no residual contamination is present, and properly dispose of wastes. Constituents detected during the closure activities were evaluated against final action levels to identify

  13. Optimization of the Area 5 Radioactive Waste Management Site Closure Cover

    SciTech Connect

    Shott, Greg; Yucel, Vefa

    2009-04-01

    The U.S. Department of Energy Manual DOE M 435.1-1, “Radioactive Waste Management Manual,” requires that performance assessments demonstrate that releases of radionuclides to the environment are as low as reasonably achievable (ALARA). Quantitative cost benefit analysis of radiation protection options is one component of the ALARA process. This report summarizes a quantitative cost benefit analysis of closure cover thickness for the Area 5 Radioactive Waste Management Site (RWMS) on the Nevada Test Site. The optimum cover thickness that maintains doses ALARA is shown to be the thickness with the minimum total closure cost. Total closure cost is the sum of cover construction cost and the health detriment cost. Cover construction cost is estimated based on detailed cost estimates for closure of the 92-acre Low-Level Waste Management Unit (LLWMU). The health detriment cost is calculated as the product of collective dose and a constant monetary value of health detriment in units of dollars per unit collective dose. Collective dose is the sum of all individual doses in an exposed population and has units of person-sievert (Sv). Five discrete cover thickness options ranging from 2.5 to 4.5 meters (m) (8.2 to 15 feet [ft]) are evaluated. The optimization was subject to the constraints that (1) options must meet all applicable regulatory requirements and that (2) individual doses be a small fraction of background radiation dose. Total closure cost is found to be a monotonically increasing function of cover thickness for the 92-ac LLWMU, the Northern Expansion Area, and the entire Area 5 RWMS. The cover construction cost is orders of magnitude greater than the health detriment cost. Two-thousand Latin hypercube sampling realizations of the relationship between total closure cost and cover thickness are generated. In every realization, the optimum cover thickness is 2.5 m (8.2 ft) for the 92-ac Low-Level Waste Management Unit, the Northern Expansion Area, and the entire

  14. Fast Absorbing Gut Suture versus Cyanoacrylate Tissue Adhesive in the Epidermal Closure of Linear Repairs Following Mohs Micrographic Surgery

    PubMed Central

    Kim, June; Cool, Alicia J.; Hanlon, Allison M.; Leffell, David J.

    2015-01-01

    Background: Cyanoacrylate topical adhesives and fast absorbing gut sutures are increasingly utilized by dermatologic surgeons as they provide satisfactory surgical outcomes while eliminating an additional patient visit for suture removal. To date, no head-to-head studies have compared the wound healing characteristics of these epidermal closure techniques in the repair of facial wounds after Mohs micrographic surgery. Objective: To compare the cosmetic outcome of epidermal closure by cyanoacrylate topical adhesive with fast absorbing gut suture in linear repairs of the face following Mohs micrographic surgery. Methods: Fourteen patients with wound length greater than 3cm who underwent Mohs micrographic surgery for nonmelanoma skin cancer of the face were enrolled in this randomized right-left comparative study. Following placement of dermal sutures, half of the wound was randomly selected for closure with cyanoacrylate and the contralateral side with fast absorbing gut suture. Using photographs from the three-month postoperative visit, six blinded individuals rated the overall cosmetic outcome. Results: The present study shows no significant difference in cosmetic outcomes between cyanoacrylate and fast absorbing gut suture for closure of linear facial wounds resulting from Mohs micrographic surgery. Cyanoacrylate tissue adhesive may not be as effective in achieving optimal cosmesis for wounds on the forehead or of longer repair lengths. The majority of patients did not have a preference for wound closure techniques, but when a preference was given, cyanoacrylate was significantly favored over sutures. Conclusion: Cyanoacrylate tissue adhesive and fast absorbing gut suture both result in comparable aesthetic outcomes for epidermal closure of linear facial wounds following Mohs micrographic surgery. Consideration should be given to factors such as need for eversion, hemostasis, and wound tension when selecting an epidermal wound closure method. (Clinical

  15. HWMA/RCRA CLOSURE PLAN FOR THE MATERIALS TEST REACTOR WING (TRA-604) LABORATORY COMPONENTS VOLUNTARY CONSENT ORDER ACTION PLAN VCO-5.8 D REVISION2

    SciTech Connect

    KIRK WINTERHOLLER

    2008-02-25

    This Hazardous Waste Management Act/Resource Conservation and Recovery Act closure plan was developed for the laboratory components of the Test Reactor Area Catch Tank System (TRA-630) that are located in the Materials Test Reactor Wing (TRA-604) at the Reactor Technology Complex, Idaho National Laboratory Site, to meet a further milestone established under Voluntary Consent Order Action Plan VCO-5.8.d. The TRA-604 laboratory components addressed in this closure plan were deferred from the TRA-630 Catch Tank System closure plan due to ongoing laboratory operations in the areas requiring closure actions. The TRA-604 laboratory components include the TRA-604 laboratory warm wastewater drain piping, undersink drains, subheaders, and the east TRA-604 laboratory drain header. Potentially contaminated surfaces located beneath the TRA-604 laboratory warm wastewater drain piping and beneath the island sinks located in Laboratories 126 and 128 (located in TRA-661) are also addressed in this closure plan. The TRA-604 laboratory components will be closed in accordance with the interim status requirements of the Hazardous Waste Management Act/Resource Conservation and Recovery Act as implemented by the Idaho Administrative Procedures Act 58.01.05.009 and 40 Code of Federal Regulations 265, Subparts G and J. This closure plan presents the closure performance standards and the methods for achieving those standards.

  16. Efficacy and Safety of the Angioseal Vascular Closure Device Post Antegrade Puncture

    SciTech Connect

    Looby, S.; Keeling, A. N.; McErlean, A.; Given, M. F.; Geoghegan, T.; Lee, M. J.

    2008-05-15

    In this study, the efficacy and safety of the Angioseal vascular closure device post antegrade puncture of the common femoral artery (CFA) for lower limb vascular interventional procedures are evaluated. A retrospective analysis of the medical records of 60 consecutive patients who were referred for interventional procedures in the superficial femoral artery (SFA) or popliteal artery (popl. art.) was performed. Antegrade puncture was successfully performed in 58 of 60 patients (96.6%). Indications included right SFA angioplasty (n = 35), left SFA angioplasty (n = 17), right popl. art. angioplasty (n = 5), and left popl. art. angioplasty (n = 1). Hemostasis was achieved by, on an intention-to-treat basis, the Angioseal vascular closure device in 46 patients and manual compression in 12 patients. Manual compression was used instead of Angioseal because of severe calcified arterial wall plaques (n = 7), failed deployment of the Angioseal (n = 4), and left SFA dissection (n = 1). There were no major recorded complications in the Angioseal group despite the use of antiplatelet or anticoagulant medications. Twenty-three (50%) of the patients in the Angioseal group were discharged within 24 h. Thirty-seven of the 46 patients who received an Angioseal device had undergone a previous ipsilateral CFA puncture (time range, 2 days to 56 months; mean, 6.2 months). Nine of these patients had undergone ipsilateral Angioseal deployment in the previous 3 months. We conclude that the Angioseal vascular closure device is a safe and efficient means of achieving hemostasis post antegrade puncture.

  17. Complementary and alternative medicine's occupational closure in Portuguese healthcare: Contradictions and challenges.

    PubMed

    Almeida, Joana

    2016-09-01

    This article analyses strategies of closure recently enacted by complementary and alternative medicine practitioners in order to achieve occupational control over work domains in healthcare, taking Portugal as an example. A combination of the neo-Weberian occupational closure theory of the professions and Abbott's jurisdictional vacancy theory is proposed as the framework for analysis. Acupuncture and homeopathy will be presented as case studies. Data are derived from in-depth interviews with 10 traditional acupuncturists and 10 traditional homeopaths. Data analysis suggests that (1) professionalisation, (2) alignment with biomedical science and (3) expressing 'legitimating values' of a countervailing nature have been three significant strategies complementary and alternative medicine practitioners have used in an attempt to achieve market closure. It is argued that these strategies are contradictory: some involve allegiances, while others involve demarcation from biomedical science. A further outcome of these strategies is the promotion of complementary and alternative medicine treatments and solutions in everyday life. The success of these strategies therefore, although helping to reinforce the biomedical model, may simultaneously help complementary and alternative medicine to demarcate from it, posing thus challenges to mainstream healthcare.

  18. Scheduling Army Base Realignment and Closure

    DTIC Science & Technology

    2004-06-01

    Time Cost (OTHER- C), the Overhead and Program Planning Support Cost (PROG-C), Mothball Shutdown Cost (SHUT-C), the Civilian RIF Early Retirement Unemployment...equipment, and personnel costs such as severance pay and early retirement . If the old cost is higher than the new cost, the difference is an...Force) cost, civilian early retirement cost, civilian new hires cost, eliminated military PCS (Permanent Change of Station) cost, and unemployment

  19. Mixing in SRS Closure Business Unit Applications

    SciTech Connect

    POIRIER, MICHAELR.

    2004-06-23

    The following equipment is commonly used to mix fluids: mechanical agitators, jets (pumps), shrouded axial impeller mixers (Flygt mixers), spargers, pulsed jet mixers, boiling, static mixers, falling films, liquid sprays, and thermal convection. This discussion will focus on mechanical agitators, jets, shrouded axial impeller mixers, spargers, and pulsed jet mixers, as these devices are most likely to be employed in Savannah River Site (SRS) Closure Business applications. In addressing mixing problems in the SRS Tank Farm, one must distinguish between different mixing objectives. These objectives include sludge mixing (e.g., Extended Sludge Processing), sludge retrieval (e.g., sludge transfers between tanks), heel retrieval (e.g., Tanks 18F and 19F), chemical reactions (e.g., oxalic acid neutralization) and salt dissolution. For example, one should not apply sludge mixing guidelines to heel removal applications. Mixing effectiveness is a function of both the mixing device (e.g., slurry pump, agitator, air sparger) and the properties of the material to be mixed (e.g., yield stress, viscosity, density, and particle size). The objective of this document is to provide background mixing knowledge for the SRS Closure Business Unit personnel and to provide general recommendations for mixing in SRS applications.

  20. SRS tank closure. Innovative technology summary report

    SciTech Connect

    Not Available

    1999-08-01

    High-level waste (HLW) tank closure technology is designed to stabilize any remaining radionuclides and hazardous constituents left in a tank after bulk waste removal. Two Savannah River Site (SRS) HLW tanks were closed after cleansing and then filling each tank with three layers of grout. The first layer consists of a chemically reducing grout. The fill material has chemical properties that retard the movement of some radionuclides and chemical constituents. A layer of controlled low-strength material (CLSM), a self-leveling fill material, is placed on top of the reducing grout. CLSM provides sufficient strength to support the overbearing weight. The final layer is a free-flowing, strong grout similar to normal concrete. After the main tank cavity is filled, risers are filled with grout, and all waste transfer piping connected to the tank is isolated. The tank ventilation system is dismantled, and the remaining systems are isolated. Equipment that remains with the tank is filled with grout. The tank and ancillary systems are left in a state requiring only limited surveillance. Administrative procedures are in place to control land use and access. DOE eventually plans to remove all of its HLW storage tanks from service. These tanks are located at SRS, Hanford, and Idaho National Engineering and Environmental Laboratory. Low-activity waste storage tanks at Oak Ridge Reservation are also scheduled for closure.

  1. Remote controlled vacuum joint closure mechanism

    DOEpatents

    Doll, David W.; Hager, E. Randolph

    1986-01-01

    A remotely operable and maintainable vacuum joint closure mechanism for a noncircular aperture is disclosed. The closure mechanism includes an extendible bellows coupled at one end to a noncircular duct and at its other end to a flange assembly having sealed grooves for establishing a high vacuum seal with the abutting surface of a facing flange which includes an aperture forming part of the system to be evacuated. A plurality of generally linear arrangements of pivotally coupled linkages and piston combinations are mounted around the outer surface of the duct and aligned along the length thereof. Each of the piston/linkage assemblies is adapted to engage the flange assembly by means of a respective piston and is further coupled to a remote controlled piston drive shaft to permit each of the linkages positioned on a respective flat outer surface of the duct to simultaneously and uniformly displace a corresponding piston and the flange assembly with which it is in contact along the length of the duct in extending the bellows to provide a high vacuum seal between the movable flange and the facing flange. A plurality of latch mechanisms are also pivotally mounted on the outside of the duct. A first end of each of the latch mechanisms is coupled to a remotely controlled latch control shaft for displacing the latch mechanism about its pivot point. In response to the pivoting displacement of the latch mechanism, a second end thereof is displaced so as to securely engage the facing flange.

  2. CLOSURE WELD DEVELOPMENT FOR 3013 OUTER CONTAINERS

    SciTech Connect

    Daugherty, W.; Howard, S.; Peterson, K.; Stokes, M.

    2009-11-10

    Excess plutonium materials in the DOE complex are packaged and stored in accordance with DOE-STD-3013. This standard specifies requirements for the stabilization of such materials and subsequent packaging in dual nested seal-welded containers. Austenitic stainless steels have been selected for container fabrication. The inner 3013 container provides contamination control while the outer 3013 container is the primary containment vessel and is the focus of this paper. Each packaging site chose a process for seal welding the outer 3013 containers in accordance with its needs and expertise. The two processes chosen for weld closure were laser beam welding (LBW) and gas tungsten arc welding (GTAW). Following development efforts, each system was qualified in accordance with DOE-STD-3013 prior to production use. The 3013 outer container closure weld joint was designed to accommodate the characteristics of a laser weld. This aspect of the joint design necessitated some innovative process and equipment considerations in the application of the GTAW process. Details of the weld requirements and the development processes are presented and several potential enhancements for the GTAW system are described.

  3. Hospital Closure and Insights into Patient Dispersion

    PubMed Central

    Garg, N.; Husk, G.; Nguyen, T.; Onyile, A.; Echezona, S.; Kuperman, G.

    2015-01-01

    Summary Background Hospital closures are becoming increasingly common in the United States. Patients who received care at the closing hospitals must travel to different, often farther hospitals for care, and nearby remaining hospitals may have difficulty coping with a sudden influx of patients. Objectives Our objectives are to analyze the dispersion patterns of patients from a closing hospital and to correlate that with distance from the closing hospital for three specific visit types: emergency, inpatient, and ambulatory. Methods In this study, we used data from a health information exchange to track patients from Saint Vincent’s Medical Center, a hospital in New York City that closed in 2010, to determine where they received emergency, inpatient, and ambulatory care following the closure. Results We found that patients went to the next nearest hospital for their emergency and inpatient care, but ambulatory encounters did not correlate with distance. Discussion It is likely that patients followed their ambulatory providers as they transitioned to another hospital system. Additional work should be done to determine predictors of impact on nearby hospitals when another hospital in the community closes in order to better prepare for patient dispersion. PMID:25848422

  4. Impact of Different Standard Type A7A Drum Closure-Ring Practices on Gasket Contraction and Bolt Closure Distance– 15621

    SciTech Connect

    Ketusky, Edward; Blanton, Paul; Bobbitt, John H.

    2015-03-11

    The Department of Energy, the Savannah River National Laboratory, several manufacturers of specification drums, and the United States Department of Transportation (DOT) are collaborating in the development of a guidance document for DOE contractors and vendors who wish to qualify containers to DOT 7A Type A requirements. Currently, the effort is focused on DOT 7A Type A 208-liter (55-gallons) drums with a standard 12-gauge bolted closure ring. The U.S. requirements, contained in Title 49, Part 178.350 “Specification 7A; general packaging, Type A specifies a competent authority review of the packaging is not required for the transport of (Class 7) radioactive material containing less than Type A quantities of radioactive material. For Type AF drums, a 4 ft. regulatory free drop must be performed, such that the drum “suffers maximum damage.” Although the actual orientation is not defined by the specification, recent studies suggest that maximum damage would result from a shallow angle top impact, where kinetic energy is transferred to the lid, ultimately causing heavy damage to the lid, or even worse, causing the lid to come off. Since each vendor develops closure recommendations/procedures for the drums they manufacture, key parameters applied to drums during closing vary based on vendor. As part of the initial phase of the collaboration, the impact of the closure variants on the ability of the drum to suffer maximum damage is investigated. Specifically, closure testing is performed varying: 1) the amount of torque applied to the closure ring bolt; and, 2) stress relief protocol, including: a) weight of hammer; and, b) orientation that the hammer hits the closure ring. After closure, the amount of drum lid gasket contraction and the distance that the closure bolt moves through the closure ring is measured.

  5. Technical feasibility of line-assisted complete closure technique for large mucosal defects after colorectal endoscopic submucosal dissection

    PubMed Central

    Kato, Minoru; Takeuchi, Yoji; Yamasaki, Yasushi; Arao, Masamichi; Suzuki, Sho; Iwatsubo, Taro; Hamada, Kenta; Tonai, Yusuke; Shichijo, Satoki; Matsuura, Noriko; Nakahira, Hiroko; Kanesaka, Takashi; Akasaka, Tomofumi; Hanaoka, Noboru; Higashino, Koji; Uedo, Noriya; Ishihara, Ryu; Iishi, Hiroyasu

    2017-01-01

    Background and study aims Complete closure of large mucosal defects after colorectal endoscopic submucosal dissection (C-ESD) is considered impossible in most cases because of the limited width of the open clip. We therefore invented a simple closure technique using clip-and-line, named “line-assisted complete closure (LACC)”, and assessed its technical feasibility. Patients and methods Between January and February 2016, we performed LACC in 11 patients after C-ESD and included them in this retrospective feasibility study. Outcome measures were procedural success rate, procedure time, and post-procedural complications. Results The median size of the resected specimen was 36 mm (range 30 – 72 mm). Procedural success was achieved in 10 of 11 cases (91 %). Those 10 cases required a median of 9 endoclips (range 6 – 12) for complete closure. Median procedure time for LACC was 14 minutes (range 6 – 22). No complications were observed in any of the cases after the procedure. Conclusion LACC is a simple and feasible technique for complete closure of large mucosal defects after C-ESD. PMID:28337479

  6. A new system for crack closure of cementitious materials using shrinkable polymers

    SciTech Connect

    Jefferson, Anthony; Joseph, Christopher; Lark, Robert; Isaacs, Ben; Dunn, Simon; Weager, Brendon

    2010-05-15

    This paper presents details of an original crack-closure system for cementitious materials using shrinkable polymer tendons. The system involves the incorporation of unbonded pre-oriented polymer tendons in cementitious beams. Crack closure is achieved by thermally activating the shrinkage mechanism of the restrained polymer tendons after the cement-based material has undergone initial curing. The feasibility of the system is demonstrated in a series of small scale experiments on pre-cracked prismatic mortar specimens. The results from these tests show that, upon activation, the polymer tendon completely closes the preformed macro-cracks and imparts a significant stress across the crack faces. The potential of the system to enhance the natural autogenous crack healing process and generally improve the durability of concrete structures is addressed.

  7. Conventional and emerging treatments in the management of acute primary angle closure

    PubMed Central

    Boey, Pui Yi; Singhal, Shweta; Perera, Shamira A; Aung, Tin

    2012-01-01

    The management of acute primary angle closure is directed at lowering the intraocular pressure and relieving pupil block. Conventional treatment involves the use of medical treatment and laser peripheral iridotomy, respectively, as a means for achieving these aims. Newer therapeutic strategies have been described that are potentially useful adjuncts or alternatives to conventional treatment. Emerging strategies that lower intraocular pressure include anterior chamber paracentesis, as well as laser procedures such as iridoplasty and pupilloplasty. A possible alternative to relieving pupil block is lens extraction, and may be combined with adjunctive measures such as goniosynechiolysis and viscogoniosynechiolysis. Trabeculectomy has a limited role in the acute setting. This review paper reviews the current evidence regarding conventional and newer treatment modalities for acute primary angle closure. PMID:22536030

  8. PROCEDURE FOR ESTIMATING PERMANENT TOTAL ENCLOSURE COSTS

    EPA Science Inventory

    The paper discusses a procedure for estimating permanent total enclosure (PTE) costs. (NOTE: Industries that use add-on control devices must adequately capture emissions before delivering them to the control device. One way to capture emissions is to use PTEs, enclosures that mee...

  9. A permanent magnet system for gyrotrons

    SciTech Connect

    Moebius, A.

    1995-12-31

    Currently known configurations of permanent magnet systems for gyrotrons create an axial guiding field with a change of direction along the electron beam path causing problems for the beam stability. In this paper a novel configuration is shown leading to an axial magnetic field with no such change of sign and hence being usable for currently existing tubes.

  10. [Pets as permanent excretors of zoonoses pathogens].

    PubMed

    Mayr, B

    1993-02-01

    When scrutinizing zoonoses with regard to risks for human beings, the spectrum of pathogens with dogs, cats and birds leading to persistent infections and consequently to the fact that the animals become carriers and permanent excretors is relatively small. Most of the zoonoses cause clinical symptoms and will be taken care of correspondingly. With regard to dogs there is a multitude of persistent infections that are transferred from the pet to the human being and vice versa. In reality, however, the importance of the dog as permanent excretor of zoonosis pathogens endangering human health is minimal, except for some parasitoses. As far as cats are concerned, the situation is totally different. Cats are carriers and permanent excretors of pasteurella, the pathogens of the so-called cat-scratch disease, trichophyton and microsporum species, toxoplasmosis and orthopox viruses. The new zoonosis feline pox serves as an example of the necessity of a permanent observation of persistently infected pets. Healthy, but persistently infected birds form a source of infection not to be underestimated. Through the beat of their wings they constantly stir up dried infectious excrements and dust and thus favour the airborn infection of human beings. Chlamydia psittaci, the Newcastle disease virus and Mycobacterium avium are of major importance in this context. The risk of transferring zoonosis pathogens from persistently infected pets to human beings can be minimized through prophylactic diagnosis, strict measures of hygiene, observation of the schedule of vaccinations for the respective species and regular use of anthelmintica.

  11. Dovetail spoke internal permanent magnet machine

    DOEpatents

    Alexander, James Pellegrino; EL-Refaie, Ayman Mohamed Fawzi; Lokhandwalla, Murtuza; Shah, Manoj Ramprasad; VanDam, Jeremy Daniel

    2011-08-23

    An internal permanent magnet (IPM) machine is provided. The IPM machine includes a stator assembly and a stator core. The stator core also includes multiple stator teeth. The stator assembly is further configured with stator windings to generate a stator magnetic field when excited with alternating currents and extends along a longitudinal axis with an inner surface defining a cavity. The IPM machine also includes a rotor assembly and a rotor core. The rotor core is disposed inside the cavity and configured to rotate about the longitudinal axis. The rotor assembly further includes a shaft. The shaft further includes multiple protrusions alternately arranged relative to multiple bottom structures provided on the shaft. The rotor assembly also includes multiple stacks of laminations disposed on the protrusions and dovetailed circumferentially around the shaft. The rotor assembly further includes multiple pair of permanent magnets for generating a magnetic field, which magnetic field interacts with the stator magnetic field to produce a torque. The multiple pair of permanent magnets are disposed between the stacks. The rotor assembly also includes multiple middle wedges mounted between each pair of the multiple permanent magnets.

  12. 27 CFR 18.38 - Permanent discontinuance.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 27 Alcohol, Tobacco Products and Firearms 1 2010-04-01 2010-04-01 false Permanent discontinuance. 18.38 Section 18.38 Alcohol, Tobacco Products and Firearms ALCOHOL AND TOBACCO TAX AND TRADE BUREAU, DEPARTMENT OF THE TREASURY LIQUORS PRODUCTION OF VOLATILE FRUIT-FLAVOR CONCENTRATE Qualification...

  13. 27 CFR 18.38 - Permanent discontinuance.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 27 Alcohol, Tobacco Products and Firearms 1 2011-04-01 2011-04-01 false Permanent discontinuance. 18.38 Section 18.38 Alcohol, Tobacco Products and Firearms ALCOHOL AND TOBACCO TAX AND TRADE BUREAU, DEPARTMENT OF THE TREASURY LIQUORS PRODUCTION OF VOLATILE FRUIT-FLAVOR CONCENTRATE Qualification...

  14. Developments in electrical machines using permanent magnets

    NASA Astrophysics Data System (ADS)

    Chalmers, B. J.

    1996-05-01

    The availability of high-field permanent-magnet materials has created opportunities for the development of electrical machines with advantageous properties including high efficiency, compact size, low weight and brushless operation. The paper reports the design and performance of a number of motors and generators which have recently been developed and demonstrated.

  15. War Crimes Tribunals: A Permanent Criminal Court?

    ERIC Educational Resources Information Center

    Dorsey, James E.; Rudelius-Palmer, Kristi

    1997-01-01

    Reports on the establishment and jurisdiction of war crimes tribunals in recent years. The tribunals, established and supported by the United Nations, investigate atrocities and other crimes committed during wartime. Discusses the tribunals in Rwanda and Yugoslavia, and the political opposition to the establishment of a permanent court. (MJP)

  16. Sexism and Permanent Exclusion from School

    ERIC Educational Resources Information Center

    Carlile, Anna

    2009-01-01

    Focussing on narratives collected during a two year participant observation research project in the children's services department of an urban local authority, this article addresses the intersection between incidents of permanent exclusion from school and assumptions made on the basis of a young person's gender. The article considers gendered…

  17. Implement a site management strategy to save money and achieve timely closure

    SciTech Connect

    Buratovich-Collins, J.

    1996-12-31

    Federal regulatory standards for remediation of contaminated groundwater have been technically impossible to meet within reasonable time frames and budgets. A site management strategy (SMS) defending alternate cleanup levels (ACLs) or technical impracticability (TI) waivers and characterizing risk, managing site data, and implementing a practical site remediation approach can be very effective in saving time and money at contaminated sites. The engineering and scientific communities have been looking for practical solutions to groundwater cleanup at Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) and Resource Conservation and Recovery Act (RCRA) sites. Records of Decisions (RODs) and Corrective Measures Implementation Plans have historically specified cleanup standards for contaminated groundwater that are technically impossible to meet within reasonable time frames (such as drinking water standards). Restoration of drinking water standards was the cleanup goal for groundwater in 270 of approximately 300 Superfund RODs issued between 1987 and 1991. These statistics notwithstanding, very few sites contaminated with organic chemicals have been remediated to numerical groundwater standards.

  18. Novel hemostatic patch achieves sutureless epicardial wound closure during complex cardiac surgery, a case report.

    PubMed

    Jainandunsing, Jayant S; Al-Ansari, Sali; Woltersom, Bozena D; Scheeren, Thomas W L; Natour, Ehsan

    2015-01-27

    Treatment of damaged cardiac tissue in patients with high bleeding tendency can be very challenging, damaged myocardial tissue has a high rupture risk when being sutured subsequently on-going bleeding is a major risk factor for poor clinical outcome. We present a case demonstrating the feasibility in using a novel haemostatic collagen sponge for the management of a myocardial wound. This report is the first description in cardiac surgery where Hemopatch sponges are used to successfully seal a left ventricle wound. Our patient was diagnosed with endocarditis, had a low pre-operative haemoglobin count and underwent cardiac surgery for multiple valve repairs. The procedure was performed on cardiopulmonary bypass, which meant our patient had to be heparinized. Despite these major risk factors for bleeding Hemopatch managed to contain bleeding and seal the wound, no sutures were needed.

  19. Revascularization of immature, nonvital permanent tooth using platelet-rich fibrin in children.

    PubMed

    Nagaveni, N B; Poornima, P; Joshi, Jooie S; Pathak, Sidhant; Nandini, D B

    2015-01-01

    The purpose of this paper was to present a new approach wherein revascularization of the immature, nonvital permanent tooth was performed using platelet-rich fibrin (PRF) as a novel scaffold material. This was performed after disinfection of the root canal space using triple antibiotic paste followed by placing a PRF membrane in the root canal. The patient was followed up regularly at three-, six-, nine-, and 12-month intervals for review. After 12 months, clinical examination showed negative response to percussion and palpation tests but positive response to cold and electric pulp tests. Radiographic examination revealed continued thickening of the root dentinal walls, narrowing of root canal space, root lengthening, and closure of the root apex with normal periradicular architecture. However, more clinical research using large samples is necessary to prove it advantageous for regenerative endodontic therapy in children.

  20. Improved Methods to Produce Tissue-Engineered Skin Substitutes Suitable for the Permanent Closure of Full-Thickness Skin Injuries

    PubMed Central

    Larouche, Danielle; Cantin-Warren, Laurence; Desgagné, Maxime; Guignard, Rina; Martel, Israël; Ayoub, Akram; Lavoie, Amélie; Gauvin, Robert; Auger, François A.; Moulin, Véronique J.; Germain, Lucie

    2016-01-01

    Abstract There is a clinical need for skin substitutes to replace full-thickness skin loss. Our group has developed a bilayered skin substitute produced from the patient's own fibroblasts and keratinocytes referred to as Self-Assembled Skin Substitute (SASS). After cell isolation and expansion, the current time required to produce SASS is 45 days. We aimed to optimize the manufacturing process to standardize the production of SASS and to reduce production time. The new approach consisted in seeding keratinocytes on a fibroblast-derived tissue sheet before its detachment from the culture plate. Four days following keratinocyte seeding, the resulting tissue was stacked on two fibroblast-derived tissue sheets and cultured at the air–liquid interface for 10 days. The resulting total production time was 31 days. An alternative method adapted to more contractile fibroblasts was also developed. It consisted in adding a peripheral frame before seeding fibroblasts in the culture plate. SASSs produced by both new methods shared similar histology, contractile behavior in vitro and in vivo evolution after grafting onto mice when compared with SASSs produced by the 45-day standard method. In conclusion, the new approach for the production of high-quality human skin substitutes should allow an earlier autologous grafting for the treatment of severely burned patients. PMID:27872793

  1. 76 FR 12753 - President's Park-Environmental Assessment for Proposed Permanent Roadway Closures, Re-Design of...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-03-08

    ... jersey barriers, provisional guard booths, canopy tents, bike rack, concrete planters and standing canine... edge of E Street and installed provisional guard booths, canopy tents, bike rack, concrete planters...

  2. Slanted and saw-toothed stator poles for improved performance of doubly salient permanent magnet motor

    NASA Astrophysics Data System (ADS)

    Babu, A. R. C. Sekhar; Rajagopal, K. R.

    2005-05-01

    This paper presents the results of extensive finite element analyses conducted on doubly salient permanent magnet motor (DSPM) for improving the torque characteristics by novel methods; namely (i) slanted stator pole and (ii) saw-toothed stator pole. In the first method, stator poles are given a slant at the pole face; the slant in a direction opposite to the rotation of the motor has resulted in 7.33% and 71.45% increase in the average and maximum torques, respectively, when compared with the motor with original stator poles. With appropriate saw-tooth shaped stator poles, various permanent magnet torque and static torque profiles can be achieved.

  3. Closure End States for Facilities, Waste Sites, and Subsurface Contamination

    SciTech Connect

    Gerdes, Kurt D.; Chamberlain, Grover S.; Wellman, Dawn M.; Deeb, Rula A.; Hawley, Elizabeth L.; Whitehurst, Latrincy; Marble, Justin

    2012-11-21

    The United States (U.S.) Department of Energy (DOE) manages the largest groundwater and soil cleanup effort in the world. DOE’s Office of Environmental Management (EM) has made significant progress in its restoration efforts at sites such as Fernald and Rocky Flats. However, remaining sites, such as Savannah River Site, Oak Ridge Site, Hanford Site, Los Alamos, Paducah Gaseous Diffusion Plant, Portsmouth Gaseous Diffusion Plant, and West Valley Demonstration Project possess the most complex challenges ever encountered by the technical community and represent a challenge that will face DOE for the next decade. Closure of the remaining 18 sites in the DOE EM Program requires remediation of 75 million cubic yards of contaminated soil and 1.7 trillion gallons of contaminated groundwater, deactivation & decommissioning (D&D) of over 3000 contaminated facilities and thousands of miles of contaminated piping, removal and disposition of millions of cubic yards of legacy materials, treatment of millions of gallons of high level tank waste and disposition of hundreds of contaminated tanks. The financial obligation required to remediate this volume of contaminated environment is estimated to cost more than 7% of the to-go life-cycle cost. Critical in meeting this goal within the current life-cycle cost projections is defining technically achievable end states that formally acknowledge that remedial goals will not be achieved for a long time and that residual contamination will be managed in the interim in ways that are protective of human health and environment. Formally acknowledging the long timeframe needed for remediation can be a basis for establishing common expectations for remedy performance, thereby minimizing the risk of re-evaluating the selected remedy at a later time. Once the expectations for long-term management are in place, remedial efforts can be directed towards near-term objectives (e.g., reducing the risk of exposure to residual contamination) instead

  4. Shutdown and Closure of the Experimental Breeder Reactor - II

    SciTech Connect

    Michelbacher, John A.; Baily, Carl E.; Baird, Daniel K.; Henslee, S. Paul; Knight, Collin J.; Rosenberg, Kenneth E.

    2002-07-01

    The Department of Energy mandated the termination of the Integral Fast Reactor (IFR) Program, effective October 1, 1994. To comply with this decision, Argonne National Laboratory-West (ANL-W) prepared a plan providing detailed requirements to maintain the Experimental Breeder Reactor - II (EBR-II) in a radiologically and industrially safe condition, including removal of all irradiated fuel assemblies from the reactor plant, and removal and stabilization of the primary and secondary sodium, a liquid metal used to transfer heat within the reactor plant. The EBR-II is a pool-type reactor. The primary system contained approximately 325 m{sup 3} (86,000 gallons) of sodium and the secondary system contained 50 m{sup 3} (13,000 gallons). In order to properly dispose of the sodium in compliance with the Resource Conservation and Recovery Act (RCRA), a facility was built to react the sodium to a solid sodium hydroxide monolith for burial as a low level waste in a land disposal facility. Deactivation of a liquid metal fast breeder reactor (LMFBR) presents unique concerns. Residual amounts of sodium remaining in circuits and components must be passivated, inerted, or removed to preclude future concerns with sodium-air reactions that could generate potentially explosive mixtures of hydrogen and leave corrosive compounds. The passivation process being implemented utilizes a moist carbon dioxide gas that generates a passive layer of sodium carbonate/sodium bicarbonate over any quantities of residual sodium. Tests being conducted will determine the maximum depths of sodium that can be reacted using this method, defining the amount that must be dealt with later to achieve RCRA clean closure. Deactivation of the EBR-II complex is on schedule for a March, 2002, completion. Each system associated with EBR-II has an associated lay-up plan defining the system end state, as well as instructions for achieving the lay-up condition. A goal of system-by-system lay-up is to minimize

  5. Permanent isolation surface barrier development plan

    SciTech Connect

    Wing, N.R.

    1994-01-01

    The exhumation and treatment of wastes may not always be the preferred alternative in the remediation of a waste site. In-place disposal alternatives, under certain circumstances, may be the most desirable alternatives to use in the protection of human health and the environment. The implementation of an in-place disposal alternative will likely require some type of protective covering that will provide long-term isolation of the wastes from the accessible environment. Even if the wastes are exhumed and treated, a long-term barrier may still be needed to adequately dispose of the treated wastes or any remaining waste residuals. Currently, no {open_quotes}proven{close_quotes} long-term barrier is available. The Hanford Site Permanent Isolation Surface Barrier Development Program (BDP) was organized to develop the technology needed to provide a long-term surface barrier capability for the Hanford Site. The permanent isolation barrier technology also could be used at other sites. Permanent isolation barriers use engineered layers of natural materials to create an integrated structure with redundant protective features. Drawings of conceptual permanent isolation surface barriers are shown. The natural construction materials (e.g., fine soil, sand, gravel, riprap, asphalt) have been selected to optimize barrier performance and longevity. The objective of current designs is to use natural materials to develop a maintenance-free permanent isolation surface barrier that isolates wastes for a minimum of 1,000 years by limiting water drainage to near-zero amounts; reducing the likelihood of plant, animal, and human intrusion; controlling the exhalation of noxious gases; and minimizing erosion-related problems.

  6. Preliminary technique assessment for nondestructive evaluation certification of the NNWSI [Nevada Nuclear Waste Storage Investigations] disposal container closure

    SciTech Connect

    Day, R.A.

    1988-12-31

    Under the direction of the Department of Energy`s (DOE) Office of Civilian Radioactive Waste Management (OCRWM) program, the Nevada Nuclear Waste Storage Investigations (NNWSI) project is evaluating a candidate repository site at Yucca Mountain, Nevada, for permanent disposal of high-level nuclear waste. The Lawrence Livermore National Laboratory (LLNL), a participant in the NNWSI project, is developing waste package designs to meet the NRC requirements. One aspect of this waste package is the nondestructive testing of the final closure of the waste container. The container closure weld can best be nondestructively examined (NDE) by a combination of ultrasonics and liquid penetrants. This combination can be applied remotely and can meet stringent quality control requirements common to nuclear applications. Further development in remote systems and inspection will be required to meet anticipated requirements for flaw detection reliability and sensitivity. New research is not required but might reduce cost or inspection time. Ultrasonic and liquid penetrant methods can examine all closure methods currently being considered, which include fusion welding and inertial welding, among others. These NDE methods also have a history of application in high radiation environments and a well developed technology base for remote operation that can be used to reduce development and design costs. 43 refs., 23 figs., 3 tabs.

  7. Response to the sudden closure of St. Vincent's Hospital: learning from a real, no-notice, prolonged surge event.

    PubMed

    Adalja, Amesh A; Watson, Matthew; Wollner, Samuel; Rambhia, Kunal J; Toner, Eric S

    2011-06-01

    We qualitatively examined the impact of the permanent closure of St. Vincent's Hospital in New York City on the remaining hospitals in the area and analyzed how these hospitals responded to this event. We conducted a descriptive survey consisting of interviews with clinical (n = 24) and administrative (n = 11) staff from 4 hospitals in lower Manhattan after the sudden closure of St. Vincent's Hospital. These hospitals experienced a sudden and sustained increase in patient volume. Each was faced with specific constraints (eg, finances, physical plant, bureaucracy), but they developed similar strategic responses. Generally applicable principles included: soliciting innovative ideas from clinical staff, reexamining previous proposals to improve efficiency, fast-tracking stalled capacity-building projects, and focusing on improving patient care and flow. Three broad tactical themes were apparent: increases in staff and staff hours, use of alternative sites of care, and implementing novel ways of operating. The impact on hospital operations resulting from the closure of St. Vincent's Hospital is a surrogate medical surge event and met thresholds for activating emergency operations plans. Novel operating methods used in response to this surge event offer practical and broadly applicable principles that might improve medical surge management in other hospitals.

  8. 10 CFR 61.28 - Contents of application for closure.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... site data pertinent to the long-term containment of emplaced radioactive wastes obtained during the... Energy NUCLEAR REGULATORY COMMISSION (CONTINUED) LICENSING REQUIREMENTS FOR LAND DISPOSAL OF RADIOACTIVE WASTE Licenses § 61.28 Contents of application for closure. (a) Prior to final closure of the...

  9. 10 CFR 61.28 - Contents of application for closure.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... site data pertinent to the long-term containment of emplaced radioactive wastes obtained during the... Energy NUCLEAR REGULATORY COMMISSION (CONTINUED) LICENSING REQUIREMENTS FOR LAND DISPOSAL OF RADIOACTIVE WASTE Licenses § 61.28 Contents of application for closure. (a) Prior to final closure of the...

  10. 10 CFR 61.28 - Contents of application for closure.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... site data pertinent to the long-term containment of emplaced radioactive wastes obtained during the... Energy NUCLEAR REGULATORY COMMISSION (CONTINUED) LICENSING REQUIREMENTS FOR LAND DISPOSAL OF RADIOACTIVE WASTE Licenses § 61.28 Contents of application for closure. (a) Prior to final closure of the...

  11. 10 CFR 61.28 - Contents of application for closure.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... site data pertinent to the long-term containment of emplaced radioactive wastes obtained during the... Energy NUCLEAR REGULATORY COMMISSION (CONTINUED) LICENSING REQUIREMENTS FOR LAND DISPOSAL OF RADIOACTIVE WASTE Licenses § 61.28 Contents of application for closure. (a) Prior to final closure of the...

  12. 10 CFR 61.28 - Contents of application for closure.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... site data pertinent to the long-term containment of emplaced radioactive wastes obtained during the... Energy NUCLEAR REGULATORY COMMISSION (CONTINUED) LICENSING REQUIREMENTS FOR LAND DISPOSAL OF RADIOACTIVE WASTE Licenses § 61.28 Contents of application for closure. (a) Prior to final closure of the...

  13. 49 CFR 178.337-6 - Closure for manhole.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 49 Transportation 3 2014-10-01 2014-10-01 false Closure for manhole. 178.337-6 Section 178.337-6 Transportation Other Regulations Relating to Transportation (Continued) PIPELINE AND HAZARDOUS MATERIALS SAFETY... Containers for Motor Vehicle Transportation § 178.337-6 Closure for manhole. (a) Each cargo tank marked...

  14. 49 CFR 178.337-6 - Closure for manhole.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 49 Transportation 3 2012-10-01 2012-10-01 false Closure for manhole. 178.337-6 Section 178.337-6 Transportation Other Regulations Relating to Transportation (Continued) PIPELINE AND HAZARDOUS MATERIALS SAFETY... Containers for Motor Vehicle Transportation § 178.337-6 Closure for manhole. (a) Each cargo tank marked...

  15. 49 CFR 178.337-6 - Closure for manhole.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 49 Transportation 3 2011-10-01 2011-10-01 false Closure for manhole. 178.337-6 Section 178.337-6 Transportation Other Regulations Relating to Transportation (Continued) PIPELINE AND HAZARDOUS MATERIALS SAFETY... Containers for Motor Vehicle Transportation § 178.337-6 Closure for manhole. (a) Each cargo tank marked...

  16. 49 CFR 178.337-6 - Closure for manhole.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 49 Transportation 3 2013-10-01 2013-10-01 false Closure for manhole. 178.337-6 Section 178.337-6 Transportation Other Regulations Relating to Transportation (Continued) PIPELINE AND HAZARDOUS MATERIALS SAFETY... Containers for Motor Vehicle Transportation § 178.337-6 Closure for manhole. (a) Each cargo tank marked...

  17. Decontamination Study for Mixed Waste Storage Tanks RCRA Closure

    SciTech Connect

    Leaphart, D.M.; Reed, S.R.; Rankin, W.N.

    1995-03-01

    The Savannah River Site (SRS) plans to close six underground tanks storing mixed waste under RCRA regulations. In support of this closure effort, a study was performed to determine the optimal method of decontaminating these tanks to meet the closure requirements. Items consaidered in the evaluation of the decontamination methods included effectiveness, compatibility with existing waste residues, possible cleaning solution disposal methods, and cost.

  18. 43 CFR 4710.5 - Closure to livestock grazing.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 43 Public Lands: Interior 2 2011-10-01 2011-10-01 false Closure to livestock grazing. 4710.5... FREE-ROAMING HORSES AND BURROS Management Considerations § 4710.5 Closure to livestock grazing. (a) If... grazing use by all or a particular kind of livestock. (b) All public lands inhabited by wild horses...

  19. 40 CFR 265.143 - Financial assurance for closure.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... amortization to total liabilities greater than 0.1; and a ratio of current assets to current liabilities... amounting to at least 90 percent of total assets or at least six times -the sum of the current closure and... updated within 60 days after a change in the amount of the current closure cost estimate covered by...

  20. 40 CFR 264.143 - Financial assurance for closure.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... amortization to total liabilities greater than 0.1; and a ratio of current assets to current liabilities... amounting to at least 90 percent of total assets or at least six times the sum of the current closure and... amount of the current closure cost estimate covered by the agreement. (3) Payments into the trust...