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1

Defining Admission Requirements for the Joint Advanced Warfighting School.  

National Technical Information Service (NTIS)

The Joint Advanced Warfighting School (JAWS) has admission requirements that do not allow the school to meet its stated mission goals. JAWS is a new school at the Joint Forces Staff College (JFSC) that awards Joint Professional Military Education, phase o...

J. G. Sturgeon

2005-01-01

2

Strange Gravity: Toward a Unified Theory of Joint Warfighting.  

National Technical Information Service (NTIS)

The problem is, valid but incompatible service theories of operational warfighting inhibit rather than promote jointness. One cause of this problem is the joint definition of the center of gravity, which is vague and ineffective. This monograph tests a po...

M. W. Johnson

2001-01-01

3

Active Sensors in Support of the Joint Warfighting Science and Technology Plan.  

National Technical Information Service (NTIS)

The Joint Warfighting Science and Technology Plan (JWSTP) is produced annually by the Office of the Secretary of Defense to provide defense guidance for the planners, programmers, and performers of defense S and T. It is one of four documents that present...

A. R. Lovett T. Castaldi

1999-01-01

4

Advanced techniques in delivering data to the warfighter in a distributed information system  

NASA Astrophysics Data System (ADS)

The future requires military operations and intelligence communities to more heavily rely on Internet-based solutions for the delivery of MetOc data and products to the warfighter in an automated manner. These issues are being addressed by Tactical Environmental Data Services (TEDServices). TEDServices is being engineered by the Naval Research Laboratory, the Naval Oceanographic Office and the Naval Undersea Warfare Center, with sponsorship from Space and Naval Warfare Systems Command (SPAWAR) PMW-150. TEDServices was successfully demonstrated during April 2004, in FBE-Kilo, and is in transition to the US Navy this fiscal year. This paper will describe how TEDServices has been engineered to provide solutions to issues routinely confronted by warfighters. These solutions include, but are not limited to, better bandwidth usage, automated data ordering, simplification of data management, automated data transformations, forward deployed data caching, simplified integration with legacy tactical decision aids and support for joint interoperability.

Warner, Elizabeth; Ladner, Roy; Petry, Fred; Shea, John J.

2004-09-01

5

Actionable Intelligence for the Warfighter  

Microsoft Academic Search

1. ABSTRACT Lockheed Martin Advanced Technology Laboratories (LM ATL) has researched and developed Situation Understanding technologies to provide tailored, Actionable Intelligence to the individual warfighter. Situation Understanding (SU) is a core requirement of the Future Combat Systems and programs such as the Distributed Common Ground Station - Army (DCGS-A) and the Aerial Common Sensor (ACS). LM ATL has developed an

Nicholas Morizio; Sergio Gigli; Angela Pawlowski

6

Prototyping advanced warfare gaming capabilities for the 21st century warfighter  

Microsoft Academic Search

The United States Marine Corps has a unique role in development of the next-generation warfare gaming system for command staff training. This system, titled the Joint Simulation System (JSIMS), is under development by the Department of Defense through a Joint Program Office acting to coordinate the activities of multiple DoD agencies and military services. The nature of operations conducted by

Curtis L. Blais

1998-01-01

7

JCTDs - A 'Model' DoD Program for Rapid S&T Transition to Support the Joint Warfighter.  

National Technical Information Service (NTIS)

JCTD Program Mission (Primary Customer: US Combatant Commands): * Provide capability solutions through rapid prototyping to solve joint, coalition and interagency urgent shortfalls and gaps with technologies and innovational concepts * Transition enduring...

A. Lovett

2009-01-01

8

Joint Tactical Terminal (briefcase): A portable INTEL system providing a comprehensive picture of the digital battlefield to the tactical warfighter  

Microsoft Academic Search

The briefcase Joint Tactical Terminal, JTT(B), was added to the JTT family of terminals as a man-portable turn-key, tactical intelligence (INTEL) system, thereby validating the hardware and software modularity and re-usability of JTT Common Integrated Broadcast Service Modules (CIBS-M). JTT(B) is a software radio that can be re-programmed to readily adapt to changes in the Intelligence Broadcast Service (IBS). JTT(B)'s

M. Karpie; D. Pearson; E. Franke

2000-01-01

9

Improving information assimilation by modeling warfighter context  

NASA Astrophysics Data System (ADS)

In order to wage successful campaigns, the next generation of intelligence analysts and battle commanders will need to assimilate an enormous amount of information that will come from a wide range of heterogeneous data sources. Complicating this problem further is the fact that warfighters need to be able to manage information in an environment of rapidly changing events and priorities. The consequence of not addressing this problem, or not addressing it as effectively as hostile forces do, is a potential loss of assets, personnel, or tactical advantage. To design effective information displays there needs to be an extensible framework that models the warfighters context including characteristics of the information sources being displayed, the current Intelligence Surveillance Reconnaissance (ISR) picture or Common Operating Picture (COP), the warfighters current state and task, and the state of the information display. BINAH (Battlespace Information and Notification through Adaptive Heuristics) uses an agent-based modeling approach coupled with research into temporal and spatial reasoning, novel display management techniques, and development of a formal high-level language for describing model-based information configuration. The result is an information configuration pipeline designed to provide perceptual and cognitive analysis support to Air Force analysts engaged in Time-Critical Targeting target nomination. It has been integrated with the Air Force Research Laboratory's (AFRL) XML-based Joint Battlespace Infosphere (JBI) combat information management system and combines JBI delivered sensor data with a local user model and display strategies to configure a geospatial information display. The BINAH framework will provide a firm grounding for developing new C4ISR displays that maximize the ability of warfighters to assimilate the information presented.

Zaientz, Jack D.; Wood, Scott D.; Hawkins, Robert L.

2005-05-01

10

Hyperspectral imaging from space: Warfighter-1  

NASA Astrophysics Data System (ADS)

The Air Force Research Laboratory Integrated Space Technology Demonstrations (ISTD) Program Office has partnered with Orbital Sciences Corporation (OSC) to complement the commercial satellite's high-resolution panchromatic imaging and Multispectral imaging (MSI) systems with a moderate resolution Hyperspectral imaging (HSI) spectrometer camera. The program is an advanced technology demonstration utilizing a commercially based space capability to provide unique functionality in remote sensing technology. This leveraging of commercial industry to enhance the value of the Warfighter-1 program utilizes the precepts of acquisition reform and is a significant departure from the old-school method of contracting for government managed large demonstration satellites with long development times and technology obsolescence concerns. The HSI system will be able to detect targets from the spectral signature measured by the hyperspectral camera. The Warfighter-1 program will also demonstrate the utility of the spectral information to theater military commanders and intelligence analysts by transmitting HSI data directly to a mobile ground station that receives and processes the data. After a brief history of the project origins, this paper will present the details of the Warfighter-1 system and expected results from exploitation of HSI data as well as the benefits realized by this collaboration between the Air Force and commercial industry.

Cooley, Thomas; Seigel, Gary; Thorsos, Ivan

1999-01-01

11

Integrated Warfighter Biodefense Program (IWBP).  

National Technical Information Service (NTIS)

This report outlines Quantum Leap Innovations, Inc. (QLI) accomplishments during the three months of performance between April 1, 2011 and June 30, 2011 on ONR Contract N00014-10-C-0363 for the Integrated Warfighter Biodefense Program (IWBP). The report s...

G. Vaidyanathan

2011-01-01

12

Joint Warrior Interoperability Demonstration 1997 Assessment Report.  

National Technical Information Service (NTIS)

The Joint Warrior Interoperability Demonstration for 1997 (JWID 97) provided a unique environment for the Warfighter to identify the value added for mission accomplishment of demonstrated C4I capabilities. A Warfighter focused assessment was achieved thro...

R. K. Pratt D. L. Collins B. J. Brown

1997-01-01

13

V-22 Osprey Joint Advanced Vertical Aircraft.  

National Technical Information Service (NTIS)

The V-22 Osprey Joint Advanced Vertical Aircraft (V-22) is a tilt- rotor, short-take-off-and-landing aircraft, which was developed to fulfill multi-Service operational requirements. The V-22 operates as a helicopter for takeoffs and landings and, once air...

T. F. Gimble M. L. Ugone C. M. Santoni R. L. Shaffer J. A. Hoyt

2000-01-01

14

Novosibirsk Joint Research University of Advanced Technologies  

Microsoft Academic Search

The organization of Novosibirsk Joint Research University (NJRU) of Advanced Technologies created in 1997 is considered. It consists of six educational scientific centers and a center of training and retraining specialists of the highest qualification. Basic themes of research of each center are given

A. S. Vostrikov; V. I. Denisov; R. V. Ya

1998-01-01

15

National Security Space: Enabling Joint Warfighting.  

National Technical Information Service (NTIS)

Although less than 50 years have passed since man ventured into space, the constellations of satellites in orbit have fundamentally changed life on Earth. Moreover, the exploitation of space, like that of land, sea, and air, has often had an unrecognized ...

P. B. Teets

2003-01-01

16

Technical developments in far forward medical support for the 21st century Warfighter  

Microsoft Academic Search

The 20th century has seen great advances in the technology of warfighting. However, advances in medical care for the wounded have lacked. Even an adaptation of new innovative technologies in civilian healthcare has been largely absent, Stephen Henthorne here argues that, civilian healthcare will be called upon to support future military operations in the 21st century. Recently, US Marine Corps

Stephen E Henthorne B. Sc Frusi

1998-01-01

17

Findings from Advanced Technology Program's (ATP's) Survey of Joint Ventures.  

National Technical Information Service (NTIS)

The Advanced Technology Program (ATP) conducted a survey of all joint ventures that received an ATP award between 1991 and 2001. The survey was conducted to understand the motivations and impacts of joint venture collaborations. The findings show that the...

A. Wang J. O'Brien K. McTigue S. Shipp

2006-01-01

18

Unmanned Aerial Vehicles -- Benefits to the Warfighter.  

National Technical Information Service (NTIS)

From the first crude aerial vehicles to the current systems, unmanned aerial vehicles (UAVs) have sought to garner some advantage over the enemy. The benefits to the warfighter also have evolved over the years from basic delivery platforms to enhanced sur...

S. Yadali

2006-01-01

19

Decision Support Tools for Warfighters  

Microsoft Academic Search

As the United States Armed Forces prepare now for an uncertain future, the need for shortened and otherwise improved decision-making cycles is growing. The types of contingencies for which military forces may be tasked and the kinds of opposition forces that the Services may face in Joint and Coalition operations are changing. Certainly, pressure to shorten reaction times, tailor a

Steven C. Gordon

20

Joint Leveling for Advanced Kienbock's Disease  

PubMed Central

PURPOSE The use of joint leveling procedures to treat Kienbock’s disease has been limited by the degree of disease advancement. This study was designed to compare clinical and radiographic outcomes of wrists with more advanced Kienbock’s disease (stage IIIB) to wrists with less advanced disease (stage II/IIIA) following radius shortening osteotomy. METHODS This retrospective study enrolled 31 adult wrists (30 patients, mean age 39 years), treated by radius shortening osteotomy between two institutions for either stage IIIB (n=14) or stage II/IIIA (n=17) disease. Evaluation was carried out at a mean of 74 months (IIIB, 77 months; II/IIIA, 72 months). Radiographic assessment determined disease progression. Clinical outcomes were determined by validated patient-based and objective measures. RESULTS Patient-based outcome ratings of wrists treated for stage IIIB were similar to those with stage II/IIIA [QuickDASH (15 vs 12:p=.63), MMWS (84 vs 87:p=.59), VAS pain (1.2 vs 1.7:p=.45), VAS function (2.6 vs 2.1:p=.59)]. The average flexion/extension arc was 102° for wrists with stage IIIB and 106° for wrists with stage II/IIIA Kienbock’s (p=.70). Grip strength was 77% of the opposite side for stage IIIB wrists versus 85% for stage II/IIIA (p=.25). Postoperative carpal height ratio and radioscaphoid angle were worse (p<.05) for wrists treated for stage IIIB (0.46:65°) than stage II/IIIA (0.53:53°) disease. Radiographic disease progression occurred in 7 wrists (6 stage II/IIIA: 1 stage IIIB). The one stage IIIB wrist that progressed underwent wrist arthrodesis. CONCLUSIONS In this limited series, clinical outcomes of radius shortening using validated, patient-based assessment instruments and objective measures failed to demonstrate predicted “clinically relevant” differences between stage II/IIIA and IIIB Kienbock’s. Provided the high percentage successful clinical outcomes in this case series of 14 stage IIIB wrists, we believe that static carpal malalignment does not preclude radius shortening osteotomy. Level of Evidence IV; retrospective case series

Calfee, Ryan P.; Van Steyn, Marlo O.; Gyuricza, Cassie; Adams, Amelia; Weiland, Andrew J.; Gelberman, Richard H.

2010-01-01

21

Considerations for protein supplementation in warfighters.  

PubMed

Ingestion of dietary protein stimulates the synthesis of numerous body proteins. This effect is manifest via hyperaminoacidemia with insulin as a permissive factor. In a sedentary person in energy balance, it is possible to maintain nitrogen balance while consuming protein at an intake of 0.8 g protein · kg(-1) · d(-1). What is unclear is whether being in nitrogen balance is optimal for protein synthesis and not merely adequate and representative of adaptive strategies that could lead to accommodation in "stressed" physiological states. It is clear that being in negative energy balance results in reductions in lean mass and reduced rates of protein synthesis, which can be mitigated by consumption of higher (i.e., 2-3 times the RDA) dietary protein. That long-term practice of inadequate protein intake leads to reduced metabolic, physiological, and physical function provides the basic rationale for the consumption of more than merely adequate protein to prevent not only adaptation but accommodation. Warfighters engaged in combat have been shown to have high daily physical activity energy expenditure, engage in voluntary energy restriction, and are under high metabolic and mental stress. Thus, as a group warfighters would be at risk of consuming suboptimal protein intakes and therefore may benefit from higher amounts of dietary protein intake. Balanced against the potential risk of consuming higher protein, the scientific documentation for which is lacking, there is a strong rationale for the recommendation of higher protein intakes in warfighters who are engaged in field operations. PMID:24027182

Phillips, Stuart M

2013-09-11

22

Recent advances in computational mechanics of the human knee joint.  

PubMed

Computational mechanics has been advanced in every area of orthopedic biomechanics. The objective of this paper is to provide a general review of the computational models used in the analysis of the mechanical function of the knee joint in different loading and pathological conditions. Major review articles published in related areas are summarized first. The constitutive models for soft tissues of the knee are briefly discussed to facilitate understanding the joint modeling. A detailed review of the tibiofemoral joint models is presented thereafter. The geometry reconstruction procedures as well as some critical issues in finite element modeling are also discussed. Computational modeling can be a reliable and effective method for the study of mechanical behavior of the knee joint, if the model is constructed correctly. Single-phase material models have been used to predict the instantaneous load response for the healthy knees and repaired joints, such as total and partial meniscectomies, ACL and PCL reconstructions, and joint replacements. Recently, poromechanical models accounting for fluid pressurization in soft tissues have been proposed to study the viscoelastic response of the healthy and impaired knee joints. While the constitutive modeling has been considerably advanced at the tissue level, many challenges still exist in applying a good material model to three-dimensional joint simulations. A complete model validation at the joint level seems impossible presently, because only simple data can be obtained experimentally. Therefore, model validation may be concentrated on the constitutive laws using multiple mechanical tests of the tissues. Extensive model verifications at the joint level are still crucial for the accuracy of the modeling. PMID:23509602

Kazemi, M; Dabiri, Y; Li, L P

2013-02-19

23

The Joint Training System: a pillar of joint readiness and an automation challenge  

Microsoft Academic Search

The Joint Training System (JTS) (Figure 1) defines a multi-step approach to identify training requirements, plan, execute, and assess joint training events. First, and foremost, the JTS is focused on warfighting. \\

Joseph C. Barto III; Patrick D. Clark

1996-01-01

24

Construction engineering robot kit: warfighter experiment  

NASA Astrophysics Data System (ADS)

The Construction Equipment Robot Kit (CERK) Warfighter Experiment was conducted March 17-28, 2008 at Fort Leonard Wood, Missouri to assess if robotic construction equipment systems are an operationally effective and suitable means to support hasty route clearance and route remediation operations. This paper will present the findings of the Soldier testing of two different common-off-the-self (COTS) robotic kits installed on two different pieces of field construction equipment through a variety of operational vignettes. These vignettes were preformed during both day and night operations, with and without all weather gear on by Soldiers that are experienced operators of construction equipment. This paper will go into detailed analysis of the communications systems used between the robots and their operator control units (OCU) and the need to improve communications of both robotic kits. The results will show that these operations are possible to accomplish while removing the Soldier from harms way.

Theisen, Bernard L.; Richardson, Paul

2009-01-01

25

C4ISR system for warfighter and its integration technologies  

Microsoft Academic Search

The paper describes overall functions, system configuration and its overall technologies concerned of C4ISR system or information network system for warfighter with the emphasis on the use of COTS information network system concepts, principles, designing thinking, architecture and network technologies for implementing the desired C4ISR structure. Two subjects are included: research on the composition of warfighter C4ISR system from the

Hongyun Wu

2000-01-01

26

Training table to the battlefield: protein recommendations for warfighters.  

PubMed

Warfighters represent a population of athletes for whom routine training and physical expectations for military operations parallel, and very often exceed, those of their civilian counterparts. Like athletes, warfighters require nutrition support to optimize physical condition to maintain training, sustain performance, speed recovery, and prevent injury and illness. Specifically, energy and protein requirements have been tailored for these populations. Like athletes, warfighters consider protein a critical component of their diet and often incorporate protein supplements into daily diet plans. This article highlights sports nutrition principles that target energy and protein needs of athletes, considers the basis of these recommendations in the context of protein supplementation, and asserts that translating these recommendations to the warfighter is appropriate and necessary. The recommended range of protein intake of 1.2-1.8 g · kg (- 1) · d (- 1) can be extended to the warfighter. Because energy balance is pivotal to optimal protein utilization, adequate energy intake or lack thereof such that a state of negative energy balance exists, should be given particular consideration for the warfighter. Routine protein supplementation is recommended to reduce protein breakdown, support protein synthesis, and promote a positive net protein balance throughout various deployment situations and when energy intake is insufficient. PMID:24027183

Rodriguez, Nancy R

2013-09-11

27

Delivering SSA Capabilities to the Warfighter  

NASA Astrophysics Data System (ADS)

The Space Superiority Systems Wing at the Space and Missile Center (SMC/SY) equips US forces with Offensive Counterspace (OCS), Defensive Counterspace (DCS), and Space Situation Awareness (SSA) systems that further enhance space superiority. The Technology Division (SYT) mission is to identify, develop, and transition cutting-edge technologies to the warfighter. SYT invests in the most relevant technologies for SSA, DCS and OCS that enhance SMC/SY's portfolio. This presentation will provide an overview of the SMC/SY SSA Technology being worked and highlights several key programs. The presentation will also highlight how the SMC/SY SSA efforts fit into to a Space Superiority Architecture. SYT executes its own Space Control Technology program line and leverages technologies from various DoD and national laboratories, Federally Funded Research and Development Companies, national agencies, industry and academia to accomplish their mission. The portions of the SY FY06 SSA portfolio that will be discussed are: Precision Metrics, Star Sensor Studies, Multi-mission Deployable Optical System, Intelligent Agent Data Fusion efforts, ESSA ACTD and the GReAT tech demo.

van Weezendonk, J.; Sherk, J.; Ryan, T.; McGuire, R.

28

Development of a comprehensive logistics and warfighting simulation system.  

SciTech Connect

An efficient logistics system is critical to the success of military operations. Recently, the Department of Defense (DoD) has begun to move from a ''just in case'' logistics system that relies on large stores of inventoried materials toward a ''just in time'' system based on obtaining and delivering supplies when and where they are needed. For this new logistics concept to operate smoothly and responsively and be highly robust, one must understand the interrelationships between warfighting and logistics, such as the impact of losses of logistics links/nodes and the changing pace of warfighting operations. Two DoD programs, the Distributed Intelligent Agents for Logistics (DIAL) and the Warfighting Logistics Technology and Assessment Environment (WLTAE), are focusing on different aspects of this problem. These programs are being integrated to develop a Comprehensive Logistics and Warfighting System (CLAWS) that can be used to address a variety of different logistics applications in the military arena. In this paper, we describe how CLAWS will be developed, including the development of a generalized Federation Object Model that could be used in a variety of logistics and military operations applications.

Hummel, J. R.

1998-08-12

29

Lead Warfighters and Innovations: Collaborative Methods of Filling Capability Gaps.  

National Technical Information Service (NTIS)

Each war has a set of unique contextual elements that make it different from the wars of the past; thus, preparing for war will inevitably uncover capability gaps and deficiencies in warfighting capability. This paper explores the methods used by the Air ...

S. M. Frisbee

2003-01-01

30

Joint Improvised Explosive Device Defeat Organization Annual Report 2010.  

National Technical Information Service (NTIS)

For five years, the critical purpose of the Joint Improvised Explosive Device (IED) Defeat Organization (JIEDDO) has been to rapidly provide counter-IED (C-IED) capabilities to warfighters. JIEDDO has provided significant support along three lines of effo...

2010-01-01

31

Joint Vision 2010. America's Military: Preparing for Tomorrow.  

National Technical Information Service (NTIS)

Today, America's Armed Forces are the world standard for military excellence and joint warfighting. We will further strengthen our military capabilities by taking advantage of improved technology and the vitality and innovation of our people to prepare ou...

1996-01-01

32

Toward a warfighter's associate: eliminating the operator control unit  

NASA Astrophysics Data System (ADS)

In addition to the challenges of equipping a mobile robot with the appropriate sensors, actuators, and processing electronics necessary to perform some useful function, there coexists the equally important challenge of effectively controlling the system"s desired actions. This need is particularly critical if the intent is to operate in conjunction with human forces in a military application, as any low-level distractions can seriously reduce a warfighter"s chances of survival in hostile environments. Historically there can be seen a definitive trend towards making the robot smarter in order to reduce the control burden on the operator, and while much progress has been made in laboratory prototypes, all equipment deployed in theatre to date has been strictly teleoperated. There exists a definite tradeoff between the value added by the robot, in terms of how it contributes to the performance of the mission, and the loss of effectiveness associated with the operator control unit. From a command-and-control perspective, the ultimate goal would be to eliminate the need for a separate robot controller altogether, since it represents an unwanted burden and potential liability from the operator"s perspective. This paper introduces the long-term concept of a supervised autonomous Warfighter"s Associate, which employs a natural-language interface for communication with (and oversight by) its human counterpart. More realistic near-term solutions to achieve intermediate success are then presented, along with actual results to date. The primary application discussed is military, but the concept also applies to law enforcement, space exploration, and search-and-rescue scenarios.

Everett, Hobart R.; Pacis, Estrellina B.; Kogut, Greg; Farrington, Nathan M.; Khurana, S.

2004-12-01

33

Maxillo-mandibular counter-clockwise rotation and mandibular advancement with TMJ Concepts ® total joint prostheses  

Microsoft Academic Search

The purpose of this study was to evaluate skeletal and dental stability in patients who had temporomandibular joint (TMJ) reconstruction and mandibular counterclockwise advancement using TMJ Concepts total joint prostheses (TMJ Concepts Inc. Ventura, CA) with maxillary osteotomies being performed at the same operation. All patients were operated at Baylor University Medical Center, Dallas TX, USA, by one surgeon (Wolford).

K. E. Dela Coleta; L. M. Wolford; J. R. Gonçalves; A. dos Santos Pinto; L. P. Pinto; D. S. Cassano

2009-01-01

34

Virtual Welded-Joint Design Integrating Advanced Materials and Processing Technologies  

Microsoft Academic Search

The primary goal of this project is to increase the fatigue life of a welded-joint by 10 times and to reduce energy use by 25% through product performance and productivity improvements using an integrated modeling approach. The fatigue strength of a welded-joint is currently the bottleneck to design high performance and lightweight welded structures using advanced materials such as high

Z. Yang; P. Dong; S. Liu; S. Babu; G. Olson; T. DebRoy

2005-01-01

35

Warfighter Auditory Situation Awareness: Locating the Shooter with and without Hearing Protection.  

National Technical Information Service (NTIS)

Noise induced hearing loss (NIHL) is the most common military disability. One third of soldiers from Iraq and Afghan theaters have NIHL. The hearing-impaired warfighter may pose a liability to himself and others in combat operations. Warfighters have litt...

J. G. Casali J. P. Keady K. Talcott M. Killion

2011-01-01

36

Advances in the diagnosis of infection in prosthetic joint implants.  

PubMed

The widespread use and dramatic success of prosthetic joint implant surgery (arthroplasty) has greatly improved the quality of life for many individuals suffering from degenerative, arthritic, or injured joints. However, in a number of cases, recipients experience discomfort at the arthroplasty site that can signal biomechanical failure, or periprosthetic infection of the joint, or both. In fact, infection remains a devastating obstacle, preventing arthroplasty from being an almost perfect medical procedure. Existing tests for the diagnosis of infection in orthopedics are disappointing because of the relatively high frequency of false negative results. To overcome this shortcoming, and to reduce the number of infected revision arthroplasties, a methodology based on molecular biology has been established. The method allows the rapid, sensitive and accurate diagnosis of orthopedic infections, and should aid the clinician with treatment regimens, surgical decisions, and overall patient management in the growing arthroplasty population. PMID:9612800

Mariani, B D; Tuan, R S

1998-05-01

37

Rethinking Combat Identification. Joint Center for Lessons Learned Quarterly Bulletin. Volume 4, Issue 3, June 2002.  

National Technical Information Service (NTIS)

Combat identification and fratricide avoidance are two key elements of an effective warfighting campaign. Through the efforts of organizations like the Joint Combat Identification Evaluation Team (JCIET), great strides are being made to ensure friendly fo...

2002-01-01

38

Joints  

NSDL National Science Digital Library

Hinge joints move only in one direction, ball-and-socket joints are free to rotate in all directions, and gliding joints are able to move forward, backward, and side to side, but do not rotate freely.

Olivia Worland (Purdue University;Biological Sciences)

2008-06-06

39

Treatment of advanced carpometacarpal joint disease: trapeziectomy and hematoma arthroplasty.  

PubMed

Some surgical treatment options of painful basal joint arthritis do not require complex arthroplasty or suspensionplasty techniques. Simple trapeziectomy with temporary pinning of a slightly overdistracted thumb metacarpal can provide reliable pain relief, good motion, and functional stability. Recent literature supports alternative options when compared with formal ligament reconstruction or suspensionplasty procedures. Simple trapeziectomy is associated with less morbidity due to shorter operative times and the lack of need for graft harvest and ligament reconstruction. PMID:18675718

Fitzgerald, Brian T; Hofmeister, Eric P

2008-08-01

40

Advancing critical care: joint combat casualty research team and joint theater trauma system.  

PubMed

Despite the severity and complexity of injuries, survival rates among combat casualties are equal to or better than those from civilian trauma. This article summarizes the evidence regarding innovations from the battlefield that contribute to these extraordinary survival rates, including preventing hemorrhage with the use of tourniquets and hemostatic dressings, damage control resuscitation, and the rapid evacuation of casualties via MEDEVAC and the US Air Force Critical Care Air Transport Teams. Care in the air for critically injured casualties with pulmonary injuries and traumatic brain injury is discussed to demonstrate the unique considerations required to ensure safe en route care. Innovations being studied to decrease sequelae associated with complex orthopedic and extremity trauma are also presented. The role and contributions of the Joint Combat Casualty Research Team and the Joint Theater Trauma System are also discussed. PMID:20683227

Bridges, Elizabeth; Biever, Kimberlie

41

Treatment of advanced CMC joint disease: trapeziectomy and implant arthroplasty (silastic-metal-synthetic allograft).  

PubMed

Osteoarthritis of the basal joint of the thumb is a common and frequently debilitating condition, most often affecting middle-aged women. Nonoperative treatment with activity modification, splinting, oral anti-inflammatory medication, and intraarticular steroid injection frequently leads to acceptable control of symptoms. If nonoperative treatment fails, many surgical techniques have been described for management of symptomatic advanced degenerative joint changes. This article reviews the literature related to various arthroplasty options for advanced disease. Treatment decisions must clearly be tempered by the surgeon's experience, the patient's goals and expectations, and the extent of degenerative disease. PMID:18675719

Earp, Brandon E

2008-08-01

42

Enhancing Warfighter Cognitive Abilities with Transcranial Magnetic Stimulation: A Feasibility Analysis.  

National Technical Information Service (NTIS)

This study examined the feasibility of using transcranial magnetic stimulation (TMS) to enhance warfighter cognitive abilities. An extensive literature review was conducted and several TMS laboratories were visited. Discussions were also held with several...

J. T. Nelson

2007-01-01

43

Horizontal Integration of Warfighter Intelligence Data: A Shared Semantic Resource for the Intelligence Community.  

National Technical Information Service (NTIS)

We describe a strategy that is being used for the horizontal integration of warfighter intelligence data within the framework of the US Army's Distributed Common Ground System Standard Cloud (DSC) initiative. The strategy rests on the development of a set...

B. Smith C. Fu K. Parent T. Malyuta W. S. Mandrick

2012-01-01

44

General Francis Marion: The Swamp Fox and Marine Corps Warfighting Doctrine.  

National Technical Information Service (NTIS)

In the late 1980's the Marine Corps officially adopted maneuver warfare theory as its institutional doctrinal philosophy. One of the main reasons the Marine Corps adopted maneuver warfare, as a Warfighting philosophy, was in recognition that on future bat...

D. H. Wilson

2001-01-01

45

Virtual Welded - Joint Design Integrating Advanced Materials and Processing Technology  

SciTech Connect

Virtual Welede-Joint Design, a systematic modeling approach, has been developed in this project to predict the relationship of welding process, microstructure, properties, residual stress, and the ultimate weld fatique strength. This systematic modeling approach was applied in the welding of high strength steel. A special welding wire was developed in this project to introduce compressive residual stress at weld toe. The results from both modeling and experiments demonstrated that more than 10x fatique life improvement can be acheived in high strength steel welds by the combination of compressive residual stress from the special welding wire and the desired weld bead shape from a unique welding process. The results indicate a technology breakthrough in the design of lightweight and high fatique performance welded structures using high strength steels.

Yang, Zhishang; Ludewig, Howard W.; Babu, S. Suresh

2005-06-30

46

Recent Advances in Artificial Hip-Joint Replacement  

PubMed Central

In Western society arthritis of the hip is a fairly common condition in the elderly. At an advanced stage of this condition, surgical treatment is almost always necessary. The various surgical options can be divided into the so-called “biological procedures” and “replacement”. The various biological or conservative operations have failed, in large part, to stand the tests of time and predictability, and have fallen by the wayside. It is worthwhile to describe briefly some of these earlier procedures. ImagesFigures 7a and 7bFigure 1Figures 2a and 2bFigure 3Figure 4Figure 5Figure 6

Cameron, Hugh U.

1987-01-01

47

Maxillo-mandibular counter-clockwise rotation and mandibular advancement with TMJ Concepts ® total joint prostheses  

Microsoft Academic Search

The purpose of this study was to evaluate soft tissue response to maxillo-mandibular counter-clockwise rotation, with TMJ reconstruction and mandibular advancement using TMJ Concepts® total joint prostheses, and maxillary osteotomies in 44 females. All patients were operated at Baylor University Medical Center, Dallas TX, USA, by one surgeon (Wolford). Eighteen patients had genioplasties with either porous block hydroxyapatite or hard

K. E. D. Coleta; L. M. Wolford; J. R. Gonçalves; A. dos Santos Pinto; D. S. Cassano; D. A. G. Gonçalves

2009-01-01

48

Mechanisms of synovial joint and articular cartilage formation: recent advances, but many lingering mysteries.  

PubMed

Synovial joints are elegant, critically important, and deceptively simple biomechanical structures. They are comprised of articular cartilage that covers each end of the opposing skeletal elements, synovial fluid that lubricates and nourishes the tissues, ligaments that hold the skeletal elements in check, and a fibrous capsule that insulates the joints from surrounding tissues. Joints also exhibit an exquisite arrays of shapes and sizes, best exemplified by the nearly spherical convex femoral head articulating into a nearly spherical concave hip acetabulum, or a phalangeal joint with two condyles on the distal side articulating in reciprocally-shaped sockets on the opposing proximal side. Though few in number, joint tissues are highly specialized in structure and function. This is illustrated by articular cartilage with its unique extracellular matrix, unique biomechanical resilience, its largely avascular nature, and its ability to persist through life with minimal turnover of its cells and components. The fact that interest in synovial joints has remained unabated for decades is a reflection of their fundamental importance for organism function and quality of life, and for their susceptibility to a variety of acquired and congenital conditions, most importantly arthritis. This has led to many advances in this field that encompass molecular genetics to biomechanics to medicine. Regrettably, what continues to be poorly understood are the mechanisms by which synovial joints actually form in the developing embryo. If available, this information would be not only of indisputable biological interest, but would also have significant biomedical ramifications, particularly in terms of designing novel tissue regeneration or reconstruction therapies. This review focuses on recent advances in understanding the mechanisms of synovial joint formation in the limbs, and places and discusses the information within the context of classic studies and the many mysteries and questions that remain unanswered. PMID:16187328

Pacifici, Maurizio; Koyama, Eiki; Iwamoto, Masahiro

2005-09-01

49

Maxillo-mandibular counter-clockwise rotation and mandibular advancement with TMJ Concepts ® total joint prostheses  

Microsoft Academic Search

The purpose of this study was to evaluate the anatomical changes and stability of the oropharyngeal airway and head posture following TMJ reconstruction and mandibular advancement with TMJ Concepts custom-made total joint prostheses and maxillary osteotomies with counter-clockwise rotation of the maxillo-mandibular complex. All patients were operated at Baylor University Medical Center, Dallas TX, USA, by one surgeon (Wolford). The

K. E. D. Coleta; L. M. Wolford; J. R. Gonçalves; A. dos Santos Pinto; D. S. Cassano; D. A. G. Gonçalves

2009-01-01

50

Oil shale, tar sand, coal research, advanced exploratory process technology jointly sponsored research  

SciTech Connect

Accomplishments for the quarter are presented for the following areas of research: oil shale, tar sand, coal, advanced exploratory process technology, and jointly sponsored research. Oil shale research includes; oil shale process studies, environmental base studies for oil shale, and miscellaneous basic concept studies. Tar sand research covers process development. Coal research includes; underground coal gasification, coal combustion, integrated coal processing concepts, and solid waste management. Advanced exploratory process technology includes; advanced process concepts, advanced mitigation concepts, and oil and gas technology. Jointly sponsored research includes: organic and inorganic hazardous waste stabilization; development and validation of a standard test method for sequential batch extraction fluid; operation and evaluation of the CO[sub 2] HUFF-N-PUFF Process; fly ash binder for unsurfaced road aggregates; solid state NMR analysis of Mesa Verde Group, Greater Green River Basin, tight gas sands; flow-loop testing of double-wall pipe for thermal applications; characterization of petroleum residue; shallow oil production using horizontal wells with enhanced recovery techniques; and menu driven access to the WDEQ Hydrologic Data Management Systems.

Not Available

1992-01-01

51

Oil shale, tar sand, coal research advanced exploratory process technology, jointly sponsored research  

SciTech Connect

Accomplishments for the past quarter are presented for the following five tasks: oil shale; tar sand; coal; advanced exploratory process technology; and jointly sponsored research. Oil shale research covers oil shale process studies. Tar sand research is on process development of Recycle Oil Pyrolysis and Extraction (ROPE) Process. Coal research covers: coal combustion; integrated coal processing concepts; and solid waste management. Advanced exploratory process technology includes: advanced process concepts;advanced mitigation concepts; and oil and gas technology. Jointly sponsored research includes: organic and inorganic hazardous waste stabilization; CROW field demonstration with Bell Lumber and Pole; development and validation of a standard test method for sequential batch extraction fluid; PGI demonstration project; operation and evaluation of the CO[sub 2] HUFF-N-PUFF Process; fly ash binder for unsurfaced road aggregates; solid state NMR analysis of Mesaverde Group, Greater Green River Basin, tight gas sands; flow-loop testing of double-wall pipe for thermal applications; characterization of petroleum residue; shallow oil production using horizontal wells with enhanced oil recovery techniques; surface process study for oil recovery using a thermal extraction process; NMR analysis of samples from the ocean drilling program; in situ treatment of manufactured gas plant contaminated soils demonstration program; and solid state NMR analysis of naturally and artificially matured kerogens.

Speight, J.G.

1992-01-01

52

Effects of weld microstructure on static and impact performance of resistance spot welded joints in advanced high strength steels  

Microsoft Academic Search

Evaluating the impact performance of resistance spot welded joints in advanced high strength steels (AHSS) is critical for their continued integration into the automotive architecture. The effect of strain rate on the joint strength and failure mode is an important consideration in the design of welded structures. Recent results suggest that the failure mode is dependent upon the strength, chemistry,

M. I. Khan; M. L. Kuntz; Y. Zhou

2008-01-01

53

Dynamic modeling and optimal joint torque coordination of advanced robotic systems  

NASA Astrophysics Data System (ADS)

The development is documented of an efficient dynamic modeling algorithm and the subsequent optimal joint input load coordination of advanced robotic systems for industrial application. A closed-form dynamic modeling algorithm for the general closed-chain robotic linkage systems is presented. The algorithm is based on the transfer of system dependence from a set of open chain Lagrangian coordinates to any desired system generalized coordinate set of the closed-chain. Three different techniques for evaluation of the kinematic closed chain constraints allow the representation of the dynamic modeling parameters in terms of system generalized coordinates and have no restriction with regard to kinematic redundancy. The total computational requirement of the closed-chain system model is largely dependent on the computation required for the dynamic model of an open kinematic chain. In order to improve computational efficiency, modification of an existing open-chain KIC based dynamic formulation is made by the introduction of the generalized augmented body concept. This algorithm allows a 44 pct. computational saving over the current optimized one (O(N4), 5995 when N = 6). As means of resolving redundancies in advanced robotic systems, local joint torque optimization is applied for effectively using actuator power while avoiding joint torque limits. The stability problem in local joint torque optimization schemes is eliminated by using fictitious dissipating forces which act in the necessary null space. The performance index representing the global torque norm is shown to be satisfactory. In addition, the resulting joint motion trajectory becomes conservative, after a transient stage, for repetitive cyclic end-effector trajectories. The effectiveness of the null space damping method is shown. The modular robot, which is built of well defined structural modules from a finite-size inventory and is controlled by one general computer system, is another class of evolving, highly versatile, advanced robotic systems. Therefore, finally, a module based dynamic modeling algorithm is presented for the dynamic coordination of such reconfigurable modular robotic systems. A user interactive module based manipulator analysis program (MBMAP) has been coded in C language running on 4D/70 Silicon Graphics.

Kang, Hee-Jun

54

Thermal and electrical joint test for the helical field coils in the Advanced Toroidal Facility  

SciTech Connect

Initial feasibility studies of a number of configurations for the Advanced Toroidal Facility (ATF) resulted in the selection of a resistive copper continuous-coil torsatron as the optimum device considering the physics program, cost, and schedule. Further conceptual design work was directed toward optimization of this configuration and, if possible, a shorter schedule. It soon became obvious that in order to shorten the schedule, a number of design and fabrication activities should proceed in parallel. This was most critical for the vacuum vessel and the helical field (HF) coils. If the HF coils were wound in place on a completed vacuum vessel, the overall schedule would be significantly (greater than or equal to12 months) longer. The approach of parallel scheduel paths requires that the HF coils be segmented into parts of less than or equal to180 of poloidal angle and that joints be made on a turn-by-turn basis when the segments are installed. It was obvious from the outset that the compact and complex geometry of the joint design presented a special challenge in the areas of reliability, assembly, maintenance, disassembly, and cost. Also, electrical, thermal, and force excursions are significant for these joints. A number of soldered, welded, brazed, electroplated, and bolted joints were evaluated. The evaluations examined fabrication feasibility and complexity, thermal-electrical performance at approximately two-thirds of the steady-state design conditions, and installation and assembly processes. Results of the thermal-electrical tests were analyzed and extrapolated to predict performance at peak design parameters. The final selection was a lap-type joint clamped with insulated bolts that pass through the winding packing. 3 refs., 4 figs.

Brown, R.L.; Johnson, R.L.

1985-01-01

55

A Multi-Objective Advanced Design Methodology of Composite Beam-to-Column Joints Subjected to Seismic and Fire Loads  

SciTech Connect

A multi-objective advanced design methodology dealing with seismic actions followed by fire on steel-concrete composite full strength joints with concrete filled tubes is proposed in this paper. The specimens were designed in detail in order to exhibit a suitable fire behaviour after a severe earthquake. The major aspects of the cyclic behaviour of composite joints are presented and commented upon. The data obtained from monotonic and cyclic experimental tests have been used to calibrate a model of the joint in order to perform seismic simulations on several moment resisting frames. A hysteretic law was used to take into account the seismic degradation of the joints. Finally, fire tests were conducted with the objective to evaluate fire resistance of the connection already damaged by an earthquake. The experimental activity together with FE simulation demonstrated the adequacy of the advanced design methodology.

Pucinotti, Raffaele [Department of Mechanics and Materials, Mediterranean University of Reggio Calabria, loc. Feo di Vito, Reggio Calabria, 89126 (Italy); Ferrario, Fabio; Bursi, Oreste S. [Department of Mechanical and Structural Engineering, University of Trento, via Mesiano 7, Trento, 38050 (Italy)

2008-07-08

56

A Multi-Objective Advanced Design Methodology of Composite Beam-to-Column Joints Subjected to Seismic and Fire Loads  

NASA Astrophysics Data System (ADS)

A multi-objective advanced design methodology dealing with seismic actions followed by fire on steel-concrete composite full strength joints with concrete filled tubes is proposed in this paper. The specimens were designed in detail in order to exhibit a suitable fire behaviour after a severe earthquake. The major aspects of the cyclic behaviour of composite joints are presented and commented upon. The data obtained from monotonic and cyclic experimental tests have been used to calibrate a model of the joint in order to perform seismic simulations on several moment resisting frames. A hysteretic law was used to take into account the seismic degradation of the joints. Finally, fire tests were conducted with the objective to evaluate fire resistance of the connection already damaged by an earthquake. The experimental activity together with FE simulation demonstrated the adequacy of the advanced design methodology.

Pucinotti, Raffaele; Ferrario, Fabio; Bursi, Oreste S.

2008-07-01

57

Epidemiologic Studies in Elite Warfighters: U.S. Air Force Battlefield Airmen, Army Rangers, and Navy SEALs.  

National Technical Information Service (NTIS)

U.S. Air Force battlefield airmen are a select group of warfighters consisting of personnel in the following career fields: combat controllers (ground troops), pararescue (air recovery and medical treatment), tactical air control party (liaison between ai...

G. Maupin

2010-01-01

58

Oil shale, tar sand, coal research, advanced exploratory process technology, jointly sponsored research  

SciTech Connect

Progress made in five research programs is described. The subtasks in oil shale study include oil shale process studies and unconventional applications and markets for western oil shale.The tar sand study is on recycle oil pyrolysis and extraction (ROPE) process. Four tasks are described in coal research: underground coal gasification; coal combustion; integrated coal processing concepts; and sold waste management. Advanced exploratory process technology includes: advanced process concepts; advanced mitigation concepts; and oil and gas technology. Jointly sponsored research covers: organic and inorganic hazardous waste stabilization; CROW field demonstration with Bell Lumber and Pole; development and validation of a standard test method for sequential batch extraction fluid; PGI demonstration project; operation and evaluation of the CO[sub 2] HUFF-N-PUFF process; fly ash binder for unsurfaced road aggregates; solid state NMR analysis of Mesaverde group, Greater Green River Basin, tight gas sands; flow-loop testing of double-wall pipe for thermal applications; shallow oil production using horizontal wells with enhanced oil recovery techniques; NMR analysis of sample from the ocean drilling program; and menu driven access to the WDEQ hydrologic data management system.

Not Available

1992-01-01

59

Competency-Based Training: Adapting to Warfighter Needs.  

National Technical Information Service (NTIS)

Historically USAF Combat Air Forces (CAF) aircrews have trained under an event-based system, maintaining Combat Mission Ready status by accomplishing specified numbers of sortie types and events during the annual training cycle. Advances in training analy...

C. M. Colegrove W. Bennett

2006-01-01

60

Preproduction display R&D facility: a framework for developing flexible display systems reducing the war-fighters' load  

NASA Astrophysics Data System (ADS)

There is an ever increasing need for lightweight, flexible, inexpensive integrated systems encompassing displays, sensors, computers, and other electronics to provide unprecedented information capability to a broad range of war-fighters. During the next few years, a team of experts will be engaged in an intensive development program pursuing a two-pronged goal: (1) to integrate and fabricate reflective and emissive systems such as organic light emitting devices on flexible substrates including plastics, and (2) to develop materials and structural platforms that allow flexible backplane electronics to be integrated with ancillaries and display components, as well as to be mass-produced economically. An underlying theme of this effort continues to be leveraging emerging processing techniques, for example a-Si and poly-Si thin film transistor (TFT) technologies, but also advanced micro-contact pattern transfer techniques for producing low cost product with molecular structures for combined communication and electronic appliances. The initial technology integration target is a 4" diagonal active matrix QVGA display on conformal plastic substrates. These advanced developments will be realized through a unique collaborative effort between the U.S. Army, Arizona State University (ASU) in close collaboration with its academic partners, and industry partners, who are united in our shared commitment to optimize the necessary production technologies for large area/large scale, low cost, cutting-edge display products and state-of-the-art manufacturing capabilities. The newly formed Flexible Display Center (FDC) at Arizona State University provides a one-of-a-kind environment fully dedicated to fulfill the major technical challenges not addressed by display manufacturers producing glass-based flat panel displays.

Zenhausern, Frederick; Raupp, Gregory B.

2004-09-01

61

Lifetime Modeling based on an Advanced Test Chip Configuration for Lead-free Solder Joints  

Microsoft Academic Search

This paper presents the results of thermo-mechanical lifetime tests. A novel test vehicle was employed to characterize solder joint reliability of miniaturized lead-free tin-silver-copper solder bumps. The test vehicle consists of a stiff ceramic chip (AI2O3) with four corner solder joints assembled on a FR-4 PWB. The distance between the solder joint centers is variable (d= 800\\/1600\\/2400\\/3200 mum). This allows

Björn Böhme; Mike Röllig; Steffen Wiese; Klaus-Jürgen Wolter

2006-01-01

62

Airway space changes after maxillomandibular counterclockwise rotation and mandibular advancement with TMJ Concepts® total joint prostheses: three-dimensional assessment.  

PubMed

This study focused on three-dimensional (3D) airway space changes and stability following simultaneous maxillomandibular counterclockwise rotation, mandibular advancement, and temporomandibular joint (TMJ) reconstruction with custom-made total joint prostheses (TMJ Concepts(®)). Cone beam computed tomography (CBCT) scans of 30 consecutive female patients with irreversibly compromised TMJs were obtained at the following intervals: T1, presurgery; T2, immediately after surgery; and T3, at least 6 months after surgery. The CBCT volumetric datasets were analysed with Dolphin Imaging(®) software to evaluate surgical and postsurgical changes to oropharyngeal airway parameters. The average changes in airway surface area (SA), volume (VOL), and minimum axial area (MAA) were, 179.50 mm(2), 6302.60 mm(3), and 92.23 mm(2), respectively, at the longest follow-up (T3-T1) (P?0.001). Significant correlations between the amount of mandibular advancement and counterclockwise rotation of the occlusal plane and 3D airway changes were also found (P?0.01). The results of this investigation showed a significant immediate 3D airway space increase after maxillomandibular counterclockwise rotation and mandibular advancement with TMJ Concepts total joint prostheses, which remained stable over the follow-up period. PMID:23726273

Gonçalves, J R; Gomes, L C R; Vianna, A P; Rodrigues, D B; Gonçalves, D A G; Wolford, L M

2013-05-29

63

The future of information operations for airborne reconnaissance SIGINT: the Joint Interoperable Operator Network (JION)  

Microsoft Academic Search

The Joint Interoperable Operator Network (JION) will be a subset of the global signals intelligence (SIGINT) enterprise. It will concurrently serve warfighters, intelligence producers, and decision-makers at various echelons and locations. The goal of JION is to create a global airborne SIGINT network that includes all new generation and existing airborne SIGINT systems. It will enable connectivity and interoperability among

P. Nejib; R. Marks

1999-01-01

64

Joint Critical Analysis Intelligence: In A Rut, With Some Vectors Out.  

National Technical Information Service (NTIS)

Joint intelligence doctrine is stuck in a rut, and can't get out. The rut is not caused by technology failures, or collection management gaps, or insufficient training. The rut is caused by how U.S. military officers are educated to look at warfighting. T...

J. Engle B. Harvey C. King K. Sherman

2003-01-01

65

Synthesis Procedure for Mechanically Fastened Joints in Advanced Composite Materials. Volume II.  

National Technical Information Service (NTIS)

The purpose of the study was to provide the composites designer with an automated preliminary design capability for weight minimized mechanically fastened joints and to identify the common characteristics of such minimum weight designs. The problem of a s...

J. P. Waszczak T. A. Cruse

1973-01-01

66

Advances in the drop-impact reliability of solder joints for mobile applications  

Microsoft Academic Search

This manuscript presents the research studies in the drop-impact reliability of solder joints in the PCB assemblies intended for mobile applications. The works cover stress–strain characterisation of solders, evaluation of test methods at component and board levels, and investigation of the fatigue characteristics of solder joints. The stress–strain characteristics of four solder alloys were generated for the low and medium

E. H. Wong; S. K. W. Seah; W. D. van Driel; J. F. J. M. Caers; N. Owens; Y.-S. Lai

2009-01-01

67

Some recent advances in the modelling of soft rock joints in direct shear  

Microsoft Academic Search

This paper presents a review of recent developments made by the authors into the modelling of rock joints in direct shear. Careful observation of laboratory direct shear testing on concrete\\/rock joints containing two-dimensional roughness has allowed theoretical models of behaviour to be developed. The processes modelled include asperity sliding, asperity shearing, post-peak behaviour, asperity deformation and distribution of stresses on

C. M. Haberfield; J. P. Seidel

1999-01-01

68

Air Force Agency for Modeling and Simulation: Advancing Modeling and Simulation for the Warfighter.  

National Technical Information Service (NTIS)

In the mid 1990s General Ronald Fogleman, then U.S. Air Force (USAF) Chief of Staff, was determined to correct the deficiencies in modeling and simulation (M&S) that were uncovered in the months and years following Desert Storm. The existing models, techn...

R. DeForest

2009-01-01

69

Function-Oriented Material Design of Joints for Advance Armors Under Ballistic Impact.  

National Technical Information Service (NTIS)

The objective of this research is to develop a system of software tools based on a new design methodology for the efficient composite armor structural design under ballistic impact loading conditions with a special focus on the joints design. An innovativ...

Z. Ma H. Wang B. Raju

2004-01-01

70

Efficacy of Virtual Reality in Treating Post-traumatic Stress Disorder in U.S. Warfighters Returning from Iraq and Afghanistan Combat Theaters.  

National Technical Information Service (NTIS)

This randomized, controlled clinical trial examined the usefulness of brief cognitive behavioral therapy augmented with graded virtual reality exposure (VRE) to treat combat-related PTSD in returning OIF and OEF warfighters. A mixed within-between Group b...

J. Spira

2011-01-01

71

Advanced consideration of migration and the choice of destination: a joint decision  

Microsoft Academic Search

This paper fills an important gap in the migration literature by examining the interrelation between advanced consideration of migration and other migration decisions such as the choice of destination. It is shown that advanced consideration of migration via its interaction with some personal and locational factors can affect the destination choice and the potential destination characteristics, on the other hand,

Bharati Basu

1997-01-01

72

The Proceedings of Joint 28th ICFA Advanced Beam Dynamics and Advanced Nova Accelerator Workshops on Quantum Aspects of Beam Physics  

SciTech Connect

The Joint 28th ICFA (International Committee for Future Accelerators) Advanced Beam Dynamics and Advanced and Novel Accelerators Workshop on ''QUANTUM ASPECTS OF BEAM PHYSICS and Other Critical Issues of Beams in Physics and Astrophysics'', was held on January 7-11, 2003, in Hiroshima, Japan. This was the third in the QABP workshop series. The first QABP workshop was launched in January 1998, in Monterey, California, and the second was held in October 2000, in Capri, Italy. Over the past five years, this workshop series has passed its torch around the world, from the U.S. to Europe, and this time to Japan in Asia. Following the footsteps of the first two workshops, this one in Hiroshima was again a tremendous success. The frontier of beam research points to increasingly higher energy, greater brightness and lower emittance beams with ever-increasing particle species. These demands have triggered a rapidly growing number of beam phenomena that involve quantum effects. With the significant advancement of laser and accelerator technologies, there is also a growing interest in using high energy, high intensity particle and photon beams for laboratory astrophysics investigations, as well as the application of beam physics expertise to astrophysics studies. It has therefore become a tradition that this workshop series attracted a broad spectrum of experts from beam physics, astrophysics, cosmology, particle physics, condensed matter physics, nuclear physics, atomic physics, and laser science, to explore a common frontier where their individual expertise and interests overlapped.

Chen, P

2004-04-20

73

Studies and advances on joint source-channel encoding\\/decoding techniques in flow media communications  

Microsoft Academic Search

Joint source-channel coding\\/decoding (JSCC\\/JSCD) techniques in flow media communications have become a state-of-the-art and\\u000a one of the challenging research subjects in the spatial communication area. They have great application prospective and deep\\u000a impact in various manned space flights, satellite missions, mobile radio communications and deep-space explorations. In the\\u000a last few years, there have been influential achievements in JSCC\\/JSCD studies. This

Guofang Tu; Jianjun Liu; Can Zhang; Shaoshuai Gao; Shidong Li

2010-01-01

74

A New Perspective on Fatigue Performance of Advanced High Strength Steels (AHSS) GMAW Joints  

Microsoft Academic Search

Weld fatigue performance is a critical aspect for application of advanced high-strength steels (AHSS) in automotive body structures. A comparative study has been conducted to evaluate the fatigue life of AHSS welds. The material studied included seven AHSS of various strength levels - DP 600, DP 780, DP 980, M130, M220, solution annealed boron and fully hardened boron steels. Two

Zhili Feng; John Chiang; Min Kuo; Cindy Jiang; Yan Sang

2008-01-01

75

Thermal and electrical joint test for the helical field coils in the Advanced Toroidal Facility  

Microsoft Academic Search

Initial feasibility studies of a number of configurations for the Advanced Toroidal Facility (ATF) resulted in the selection of a resistive copper continuous-coil torsatron as the optimum device considering the physics program, cost, and schedule. Further conceptual design work was directed toward optimization of this configuration and, if possible, a shorter schedule. It soon became obvious that in order to

R. L. Brown; R. L. Johnson

1985-01-01

76

A Joint Virtual Advanced Technology Incubator - A New Pattern of Israeli-Palestinian Economic Cooperation  

Microsoft Academic Search

This article proposes a new and unique framework for the promotion of cooperation between Israel and the Palestinian Authority in the fields of innovation and advanced technology development. The goal is to strengthen the Palestinian Authority's economic basic structure, using the experience and know-how gained by Israel in these fields. We consider the development of a new project: a Palestine-Israel

Dafna Schwartz; Raphael Bar-El; Miki Malul

2008-01-01

77

The effectiveness of VR exposure therapy for PTSD in returning warfighters.  

PubMed

In the decade following the attack on the World Trade Center, over 2.3 million American military personnel were deployed to Iraq and Afghanistan. Lengthy tours of duty and multiple re-deployments were characteristic of these operations. Research findings demonstrate that prolonged exposure to combat increases the risk of developing posttraumatic stress disorder (PTSD). The current study was a randomized controlled clinical trial designed to assess the effectiveness of a novel intervention to treat combat-related PTSD in returning Operation Iraqi Freedom (OIF) and Operation Enduring Freedom (OEF) warfighters. A cognitive behavior treatment approach augmented with virtual reality exposure therapy (VRE) was developed, and administered for 10 treatment sessions over 5 weeks. Comparisons with a control group receiving minimal attention (MA) for 5 weeks revealed that the VRE group had significant reductions in the avoidance/numbing symptoms on the Clinician Administered PTSD Scale (CAPS). The VRE group also had significant reductions in guilt at post-treatment compared to the control group. PMID:22954842

Miyahira, Sarah D; Folen, Raymond A; Hoffman, Hunter G; Garcia-Palacios, Azucena; Spira, James L; Kawasaki, Michelle

2012-01-01

78

Joint System Prognostics For Increased Efficiency And Risk Mitigation In Advanced Nuclear Reactor Instrumentation and Control  

SciTech Connect

The science of prognostics is analogous to a doctor who, based on a set of symptoms and patient tests, assesses a probable cause, the risk to the patient, and a course of action for recovery. While traditional prognostics research has focused on the aspect of hydraulic and mechanical systems and associated failures, this project will take a joint view in focusing not only on the digital I&C aspect of reliability and risk, but also on the risks associated with the human element. Model development will not only include an approximation of the control system physical degradation but also on human performance degradation. Thus the goal of the prognostic system is to evaluate control room operation; to identify and potentially take action when performance degradation reduces plant efficiency, reliability or safety.

Donald D. Dudenhoeffer; Tuan Q. Tran; Ronald L. Boring; Bruce P. Hallbert

2006-08-01

79

Proceedings of the Joint Contractors Meeting: FE/EE Advanced Turbine Systems Conference FE Fuel Cells and Coal-Fired Heat Engines Conference  

NASA Astrophysics Data System (ADS)

The joint contractors meeting--the FE/EE Advanced Turbine Systems Conference and the FEE Fuel Cells and Coal-Fired Heat Engines Conference--was sponsored by the U.S. Department of Energy Office of Fossil Energy, and it was held at the Morgantown Energy Technology Center on 3-5 Aug. 1993. The individual papers were entered separately.

Geiling, D. W.

1993-08-01

80

Is there an optimal time for warfighters to supplement with protein?  

PubMed

Although nutritional requirements for warfighters will inevitably vary in accordance with job role and active-inactive duty cycling, somewhat generic recommendations do still apply. In considering aspects of "optimal" nutrient timing, it is important to outline singular and combinatorial relationships between protein intake and physical activity (e.g., exercise) in the context of the following: 1) skeletal muscle protein turnover, 2) functional recovery, and 3) adaptation to exercise. The essential amino acid (EAA) components of dietary protein are key macronutrients regulating muscle proteostasis, because they provide substrate to replenish muscle proteins lost during fasted periods. This occurs through a substantial, albeit short-lived (?2 h) EAA-induced stimulation of muscle protein synthesis (MPS) and via an insulin-mediated suppression of muscle protein breakdown (MPB) (via carbohydrate- and/or EAA-mediated insulin secretory effects). At rest, intake of protein (optimal range between 20 and 40 g of high-quality protein, equating to ?10-20 g EAAs) every ?4-5 h is advocated due to the refractoriness of MPS in response to continuous supply. Bouts of exercise also stimulate muscle protein turnover (increasing both MPS and MPB), but in the absence of protein intake net muscle protein balance remains negative such that exercise alone is catabolic. Intake of dietary protein redresses this balance through enhancing both the amplitude and duration of exercise-induced increases in MPS while concomitantly limiting MPB. These postexercise periods of positive net protein balance permit muscle adaptation and functional recovery. Finally, in relation to exercise, protein dosing (at a minimum of ?20 g) both in close proximity to exercise and thereafter every 4-5 h during waking hours (including before bedtime) is likely optimal for adaptation/functional recovery. PMID:24027179

Atherton, Philip James

2013-09-11

81

[Advances in the research on repairing cartilaginous defects of synovial joint].  

PubMed

The repair of defects of articular cartilage has continued to be a difficult problem. This article provided a collective review from literature pertaining to the advances gained in the repair of cartilaginous defects. In the spontaneous repair, if the defect of the cartilage was less than 3 mm, might result in complete or partial repair, but in those the diameter was more than 3 mm, the defect could not be repaired by normal cartilage. Although the cartilaginous autograft could give good result, but it could not be widely applied because short of supply of the autogenous cartilage. Cartilagious allograft could not be taken to repair cartilaginous defect because of reaction from tissue rejection. The transplantation of periosteal or perichondral graft had been tried but was eventually abandoned because of poor long-term result. The transplantation of free chondrocytes might be a method of hope. In general, transplantation of free chondrocytes into the cartilaginous defect will be lost. The supply of autogenous chondrocytes was very limited, and the heterogenous chondrocytes would inflict immunoreaction after being transplanted. In late of 1980, a new concept of tissue engineering was proposed. The problem that a scaffold of appropriate material which could hold the free chondrocytes in place from being lost might undergo proliferation and differentiation into new cartilage was far from being solved. Although tissue engineering still had various problems needed further investigation, but it will probably be the main direction of development in this field. PMID:10437110

Chen, F; Chao, Y; Shang, Q

1998-09-01

82

Redefining Combat Mission Reporting in Contemporary Operations: Focusing the Air Component's Process in Support of the Joint Warfighter.  

National Technical Information Service (NTIS)

As originally conceived in World War I, combat reporting from tactical aircraft has the potential to provide critical information concerning friendly operations and enemy activity to enhance situational awareness, supporting force protection and operation...

C. P. Bell

2010-01-01

83

Defense Technology Objectives of the Joint Warfighting Science and Technology Plan and the Defense Technology Area Plan.  

National Technical Information Service (NTIS)

Technological superiority has been, and continues to be, a cornerstone of our national military strategy. Technologies such as radar, jet engines, nuclear weapons, night vision, smart weapons, stealth, the Global Positioning System, and vastly more capabl...

1997-01-01

84

Moving Signals Intelligence from National Systems to Army Warfighters at Corps and Division.  

National Technical Information Service (NTIS)

This study evaluates the Signals Intelligence (SIGINT) support the Army receives from national systems. It reviews SIGINT support provided during Operation Joint Endeavor (1995) and during Operation Desert Capture II (1994) using the principles of intelli...

W. P. Clappin

1998-01-01

85

Oil shale, tar sand, coal research, advanced exploratory process technology jointly sponsored research. Quarterly technical progress report, April--June 1992  

SciTech Connect

Accomplishments for the quarter are presented for the following areas of research: oil shale, tar sand, coal, advanced exploratory process technology, and jointly sponsored research. Oil shale research includes; oil shale process studies, environmental base studies for oil shale, and miscellaneous basic concept studies. Tar sand research covers process development. Coal research includes; underground coal gasification, coal combustion, integrated coal processing concepts, and solid waste management. Advanced exploratory process technology includes; advanced process concepts, advanced mitigation concepts, and oil and gas technology. Jointly sponsored research includes: organic and inorganic hazardous waste stabilization; development and validation of a standard test method for sequential batch extraction fluid; operation and evaluation of the CO{sub 2} HUFF-N-PUFF Process; fly ash binder for unsurfaced road aggregates; solid state NMR analysis of Mesa Verde Group, Greater Green River Basin, tight gas sands; flow-loop testing of double-wall pipe for thermal applications; characterization of petroleum residue; shallow oil production using horizontal wells with enhanced recovery techniques; and menu driven access to the WDEQ Hydrologic Data Management Systems.

Not Available

1992-12-01

86

Oil shale, tar sand, coal research advanced exploratory process technology, jointly sponsored research. Quarterly technical progress report, October--December 1992  

SciTech Connect

Accomplishments for the past quarter are presented for the following five tasks: oil shale; tar sand; coal; advanced exploratory process technology; and jointly sponsored research. Oil shale research covers oil shale process studies. Tar sand research is on process development of Recycle Oil Pyrolysis and Extraction (ROPE) Process. Coal research covers: coal combustion; integrated coal processing concepts; and solid waste management. Advanced exploratory process technology includes: advanced process concepts;advanced mitigation concepts; and oil and gas technology. Jointly sponsored research includes: organic and inorganic hazardous waste stabilization; CROW field demonstration with Bell Lumber and Pole; development and validation of a standard test method for sequential batch extraction fluid; PGI demonstration project; operation and evaluation of the CO{sub 2} HUFF-N-PUFF Process; fly ash binder for unsurfaced road aggregates; solid state NMR analysis of Mesaverde Group, Greater Green River Basin, tight gas sands; flow-loop testing of double-wall pipe for thermal applications; characterization of petroleum residue; shallow oil production using horizontal wells with enhanced oil recovery techniques; surface process study for oil recovery using a thermal extraction process; NMR analysis of samples from the ocean drilling program; in situ treatment of manufactured gas plant contaminated soils demonstration program; and solid state NMR analysis of naturally and artificially matured kerogens.

Speight, J.G.

1992-12-31

87

Oil shale, tar sand, coal research, advanced exploratory process technology, jointly sponsored research. Quarterly technical progress report, January--March 1993  

SciTech Connect

Accomplishments for the past quarter are briefly described for the following areas of research: oil shale; tar sand; coal; advanced exploratory process technology; and jointly sponsored research. Oil shale and tar sand researches cover processing studies. Coal research includes: coal combustion; integrated coal processing concepts; and solid waste management. Advanced exploratory process technology covers: advanced process concepts; advanced mitigation concepts; and oil and gas technology. Jointly sponsored research includes: organic and inorganic hazardous waste stabilization; CROW{sup TM} field demonstration with Bell Lumber and Pole; development and validation of a standard test method for sequential batch extraction fluid; operation and evaluation of the CO{sub 2} HUFF-N-PUFF Process; fly ash binder for unsurfaced road aggregates; solid-state NMR analysis of Mesaverde Group, Greater Green River Basin tight gas sands; characterization of petroleum residue; shallow oil production using horizontal wells with enhanced oil recovery techniques; surface process study for oil recovery using a thermal extraction process; oil field waste cleanup using tank bottom recovery process; remote chemical sensor development; in situ treatment of manufactured gas plant contaminated soils demonstration program; solid-state NMR analysis of naturally and artificially matured kerogens; and development of an effective method for the clean-up of natural gas.

Not Available

1993-09-01

88

FIRRE Joint Battlespace Command and Control System for Manned and Unmanned Assets (JBC2S)  

Microsoft Academic Search

ABSTRACT The Family of Integrated Rapid Response Equipment ,(FIRRE) is an ,advanced ,technology ,demonstration ,program intended to develop a family of affordable, scalable, modular, and logistically supportable unmanned systems to meet urgent operational force-protection needs ,and requirements ,worldwide. The near-term goal is to ,provide the best available unmanned ,ground systems to the warfighter in Iraq and Afghanistan. The overarching long-term

T. a. Kramer; R. t. Laird; M. Dinh; C. m. Barngrover; J. r. Cruickshanks; G. a. Gilbreath

89

FIRRE joint battlespace command and control system for manned and unmanned assets (JBC2S)  

Microsoft Academic Search

The Family of Integrated Rapid Response Equipment (FIRRE) is an advanced technology demonstration program intended to develop a family of affordable, scalable, modular, and logistically supportable unmanned systems to meet urgent operational force-protection needs and requirements worldwide. The near-term goal is to provide the best available unmanned ground systems to the warfighter in Iraq and Afghanistan. The overarching long-term goal

T. A. Kramer; R. T. Laird; M. Dinh; C. M. Barngrover; J. R. Cruickshanks; G. A. Gilbreath

2006-01-01

90

Advances in the processing, sterilization, and crosslinking of ultra-high molecular weight polyethylene for total joint arthroplasty  

Microsoft Academic Search

Despite the recognized success and worldwide acceptance of total joint arthroplasty, wear is a major obstacle limiting the longevity of implanted UHMWPE components. Efforts to solve the wear problem in UHMWPE have spurred numerous detailed studies into the structure, morphology, and mechanical properties of the polymer at every stage of its production from original resin into stock material and final

Steven M. Kurtz; Orhun K. Muratoglu; Mark Evans; Avram A. Edidin

1999-01-01

91

Advanced Numerical and Experimental Techniques for Analysis of Dynamic Responses and Solder Joint Reliability During Drop Impact  

Microsoft Academic Search

Board level solder joint reliability performance during drop test is a critical concern to semiconductor and electronic product manufacturers. A new JEDEC standard for board level drop test of handheld electronic products was just released to specify the drop test procedure and conditions. However, there is no detailed information stated on dynamic responses of printed circuit board (PCB) and solder

Jing-En Luan; Tong Yan Tee; Eric Pek; Chwee Teck Lim; Zhaowei Zhong; Jiang Zhou

2006-01-01

92

Oil shale, tar sand, coal research, advanced exploratory process technology, jointly sponsored research. Quarterly technical progress report, July--September 1992  

SciTech Connect

Progress made in five research programs is described. The subtasks in oil shale study include oil shale process studies and unconventional applications and markets for western oil shale.The tar sand study is on recycle oil pyrolysis and extraction (ROPE) process. Four tasks are described in coal research: underground coal gasification; coal combustion; integrated coal processing concepts; and sold waste management. Advanced exploratory process technology includes: advanced process concepts; advanced mitigation concepts; and oil and gas technology. Jointly sponsored research covers: organic and inorganic hazardous waste stabilization; CROW field demonstration with Bell Lumber and Pole; development and validation of a standard test method for sequential batch extraction fluid; PGI demonstration project; operation and evaluation of the CO{sub 2} HUFF-N-PUFF process; fly ash binder for unsurfaced road aggregates; solid state NMR analysis of Mesaverde group, Greater Green River Basin, tight gas sands; flow-loop testing of double-wall pipe for thermal applications; shallow oil production using horizontal wells with enhanced oil recovery techniques; NMR analysis of sample from the ocean drilling program; and menu driven access to the WDEQ hydrologic data management system.

Not Available

1992-12-31

93

Oil shale, tar sand, coal research, advanced exploratory process technology, jointly sponsored research. Quarterly technical progress report, April--June 1993  

SciTech Connect

Progress made in five areas of research is described briefly. The subtask in oil shale research is on oil shale process studies. For tar sand the subtask reported is on process development. Coal research includes the following subtasks: Coal combustion; integrated coal processing concepts; and solid waste management. Advanced exploratory process technology includes the following: Advanced process concepts; advanced mitigation concepts; oil and gas technology. Jointly sponsored research includes: Organic and inorganic hazardous waste stabilization; CROW{sup TM} field demonstration with Bell Lumber and Pole; development and validation of a standard test method for sequential batch extraction fluid; operation and evaluation of the CO{sup 2} HUFF-N-PUFF Process; fly ash binder for unsurfaced road aggregates; solid-state NMR analysis of Mesaverde Group, Greater Green River Basin, tight gas sands; characterization of petroleum residua; shallow oil production using horizontal wells with enhanced oil recovery techniques; surface process study for oil recovery using a thermal extraction process;NMR analysis of samples from the ocean drilling program; oil field waste cleanup using tank bottom recovery process; remote chemical sensor development; in situ treatment of manufactured gas plant contaminated soils demonstration program; solid-state NMR analysis of Mowry formation shale from different sedimentary basins; solid-state NMR analysis of naturally and artificially matured kerogens; and development of effective method for the clean-up of natural gas.

Not Available

1993-09-01

94

Remote sentry advanced technology demonstration  

NASA Astrophysics Data System (ADS)

Experiences in Operational Desert Shield and Desert Storm revealed deficiencies in several areas of major importance in the post-Cold Ware era. Early entry forces must be provided with improved warfighting capabilities, especially against heavy armor, without affecting their deployability. The Rapid Force Projection Initiative (RFPI) Advanced Concept Technology Demonstration (ACTD) is tasked with addressing this deficiency. The RFPI ACTD features a hunter/standoff killer concept that relies on a variety of hunters and standoff killers to provide a significant increase in the warfighting capability of early entry forces. One of the hunters is the Remote Sentry Advanced Technology Demonstration (ATD). The Remote Sentry ATD will provide an autonomous, remote, ground based, wide-area Reconnaissance, Surveillance, and Target Acquisition capability during day/night and limited visibility conditions. The Remote Sentry ATD is being produced by Alliant Techsystems in partnership with the Harris RF Communications. The ATD is managed and technically directed by the CERDEC Night Vision and Electronic Sensors Directorate.

Brooks, Joseph A.; Gallo, Michael A.

1996-06-01

95

Advances in optical network design with p-cycles: joint optimization and pre-selection of candidate p-cycles  

Microsoft Academic Search

We address two open and inter-related issues about the design of p-cycle based networks. One of these is to reduce the complexity of solving optimal p-cycle design problems, making it practical to continually re-optimize a p-cycle based network in service, adapting to changing demand patterns. The second advance is a first research use of the above solution technique to study

Wayne D. Grover; John Doucette

2002-01-01

96

Research investigations in oil shale, tar sand, coal research, advanced exploratory process technology, and advanced fuels research: Volume 2 -- Jointly sponsored research program. Final report, October 1986--September 1993  

SciTech Connect

Numerous studies have been conducted in five principal areas: oil shale, tar sand, underground coal gasification, advanced process technology, and advanced fuels research. In subsequent years, underground coal gasification was broadened to be coal research, under which several research activities were conducted that related to coal processing. The most significant change occurred in 1989 when the agreement was redefined as a Base Program and a Jointly Sponsored Research Program (JSRP). Investigations were conducted under the Base Program to determine the physical and chemical properties of materials suitable for conversion to liquid and gaseous fuels, to test and evaluate processes and innovative concepts for such conversions, to monitor and determine environmental impacts related to development of commercial-sized operations, and to evaluate methods for mitigation of potential environmental impacts. This report is divided into two volumes: Volume 1 consists of 28 summaries that describe the principal research efforts conducted under the Base Program in five topic areas. Volume 2 describes tasks performed within the JSRP. Research conducted under this agreement has resulted in technology transfer of a variety of energy-related research information. A listing of related publications and presentations is given at the end of each research topic summary. More specific and detailed information is provided in the topical reports referenced in the related publications listings.

Smith, V.E.

1994-09-01

97

Warfights Support: Actions Needed to Improve Visibility and Coordination of DOD's Counter-Improvised Explosive Device Efforts.  

National Technical Information Service (NTIS)

Prior to the Joint Improvised Explosive Device Defeat Organization's (JIEDDO) establishment in 2006, no single entity was responsible for coordinating the Department of Defense's (DOD) counter improvised explosive device (IED) efforts. JIEDDO was establis...

2009-01-01

98

Joint attention and language evolution  

Microsoft Academic Search

This study investigates how more advanced joint attentional mechanisms, rather than only shared attention between two agents and an object, can be implemented and how they influence the results of language games played by these agents. We present computer simulations with language games showing that adding constructs that mimic the three stages of joint attention identified in children's early development

Johan Kwisthout; Paul Vogt; Pim Haselager; Ton Dijkstra

2008-01-01

99

Periprosthetic Joint Infections  

PubMed Central

Implantation of joint prostheses is becoming increasingly common, especially for the hip and knee. Infection is considered to be the most devastating of prosthesis-related complications, leading to prolonged hospitalization, repeated surgical intervention, and even definitive loss of the implant. The main risk factors to periprosthetic joint infections (PJIs) are advanced age, malnutrition, obesity, diabetes mellitus, HIV infection at an advanced stage, presence of distant infectious foci, and antecedents of arthroscopy or infection in previous arthroplasty. Joint prostheses can become infected through three different routes: direct implantation, hematogenic infection, and reactivation of latent infection. Gram-positive bacteria predominate in cases of PJI, mainly Staphylococcus aureus and Staphylococcus epidermidis. PJIs present characteristic signs that can be divided into acute and chronic manifestations. The main imaging method used in diagnosing joint prosthesis infections is X-ray. Computed tomography (CT) scan may assist in distinguishing between septic and aseptic loosening. Three-phase bone scintigraphy using technetium has high sensitivity, but low specificity. Positron emission tomography using fluorodeoxyglucose (FDG-PET) presents very divergent results in the literature. Definitive diagnosis of infection should be made by isolating the microorganism through cultures on material obtained from joint fluid puncturing, surgical wound secretions, surgical debridement procedures, or sonication fluid. Success in treating PJI depends on extensive surgical debridement and adequate and effective antibiotic therapy. Treatment in two stages using a spacer is recommended for most chronic infections in arthroplasty cases. Treatment in a single procedure is appropriate in carefully selected cases.

Lima, Ana Lucia L.; Oliveira, Priscila R.; Carvalho, Vladimir C.; Saconi, Eduardo S.; Cabrita, Henrique B.; Rodrigues, Marcelo B.

2013-01-01

100

TOPICAL REVIEW: Recent advances in jointed quantum mechanics and molecular mechanics calculations of biological macromolecules: schemes and applications coupled to ab initio calculations  

NASA Astrophysics Data System (ADS)

We review the recent research on the functional mechanisms of biological macromolecules using theoretical methodologies coupled to ab initio quantum mechanical (QM) treatments of reaction centers in proteins and nucleic acids. Since in most cases such biological molecules are large, the computational costs of performing ab initio calculations for the entire structures are prohibitive. Instead, simulations that are jointed with molecular mechanics (MM) calculations are crucial to evaluate the long-range electrostatic interactions, which significantly affect the electronic structures of biological macromolecules. Thus, we focus our attention on the methodologies/schemes and applications of jointed QM/MM calculations, and discuss the critical issues to be elucidated in biological macromolecular systems.

Hagiwara, Yohsuke; Tateno, Masaru

2010-10-01

101

Ceramic joints  

DOEpatents

Butt joints between materials having different coefficients of thermal expansion are prepared having a reduced probability of failure of stress facture. This is accomplished by narrowing/tapering the material having the lower coefficient of thermal expansion in a direction away from the joint interface and not joining the narrow-tapered surface to the material having the higher coefficient of thermal expansion.

Miller, Bradley J. (Worcester, MA); Patten, Jr., Donald O. (Sterling, MA)

1991-01-01

102

Screw Placement and Osteoplasty Under Computed Tomographic-Fluoroscopic Guidance in a Case of Advanced Metastatic Destruction of the Iliosacral Joint  

SciTech Connect

We present a case of combined surgical screw placement and osteoplasty guided by computed tomography-fluoroscopy (CTF) in a 68-year-old man with unilateral osteolytic destruction and a pathological fracture of the iliosacral joint due to a metastasis from renal cell carcinoma. The patient experienced intractable lower back pain that was refractory to analgesia. After transarterial particle and coil embolization of the tumor-feeding vessels in the angiography unit, the procedure was performed under general anesthesia by an interdisciplinary team of interventional radiologists and trauma surgeons. Under intermittent single-shot CTF, two K wires were inserted into the left iliosacral joint from a lateral transiliac approach at the S1 level followed by two self-tapping surgical screws. Continuous CTF was used for monitoring of the subsequent polymethylmethacrylate injection through two vertebroplasty cannulas for further stabilization of the screw threads within the osteolytic sacral ala. Both the screw placement and cement injection were successful, with no complications occurring during or after the procedure. With additional nonsteroidal anti-inflammatory and opioid medication, the patient reported a marked decrease in his lower back pain and was able to move independently again at the 3-month follow-up assessment. In our patient with intolerable back pain due to tumor destruction and consequent pathological fracture of the iliosacral joint, CTF-guided iliosacral screw placement combined with osteoplasty was successful with respect to joint stabilization and a reduction in the need for analgesic therapy.

Trumm, Christoph Gregor, E-mail: christoph.trumm@med.lmu.de [University of Munich, Department of Clinical Radiology (Germany); Rubenbauer, Bianca; Piltz, Stefan [University of Munich, Department of Surgery (Germany); Reiser, Maximilian F.; Hoffmann, Ralf-Thorsten [University of Munich, Department of Clinical Radiology (Germany)

2011-02-15

103

The Warfighters of Today: Personality and Cognitive Characteristics of Rated Fighter Pilots in the United States Air Force  

Microsoft Academic Search

Theory and research established a schema for a successful fighter pilot, which includes advanced cognitive ability, unwavering emotional stability, and the will and motivation to achieve a goal or mission (Picano et al, 2006). Due to the high-risk nature of the job, an individual must have the “right stuff” to succeed as a USAF fighter pilot. In response to these

Katie M. Ragan

2009-01-01

104

Joint Replacement (Finger and Wrist Joints)  

MedlinePLUS

... mean to have a “joint replacement” or an “artificial joint”? The abnormal bone and lining structures of ... When should joint replacement surgery NOT be done? Artificial joints should not be done when: There is ...

105

Enhancing solder joint fatigue life for ball grid array packages  

Microsoft Academic Search

Solder joint fatigue failure is quite common in plastic ball grid array (BGA) packages. Accurately predicting solder joint fatigue life and developing advanced, efficient techniques of enhancing solder joint reliability are essential to package development. In this paper, a finite element model is created to simulate the thermal-mechanical behavior of solder joints in the thermal cycling environment. Darveaux's physical model

Zhou Wei; Lim Beng Kuan

2003-01-01

106

The Joint Surveillance Target Attack Radar System: Can procedures be developed to support the requirements of the land and air component commanders?  

NASA Astrophysics Data System (ADS)

This thesis examines the warfighting capabilities of the Joint Surveillance Target Attack Radar System (Joint STARS). Joint STARS effectiveness in DESERT STORM is examined as a case study. Additionally, an analysis of Joint STARS against the Department of Defense's Seven Threat Scenarios highlight the future potential of the system. This thesis contends that Joint STARS did not simultaneously support the requirements of the Land and Air Component Commanders, during DESERT STORM. Although a contributor to success in the war, Joint STARS supported the Army and the Air Force at different times and with different radar products. The primary, but not exclusive, reason for this limitation was the technological immaturity of a weapon system still in Full Scale Development. The strengths and weakness of Joint STARS are examined throughout this thesis. This study concludes that Joint STARS procedures can be developed to support the requirements of the Land and Air Component Commanders. Recommendations for the increased effectiveness of Joint STARS support to operational warfare is provided in the final chapter.

Samborowski, Leonard J.

1992-05-01

107

Scientific and educational advancements across a socio-economic gradient: Experiences from a joint USA-South Africa project on water resources modeling  

NASA Astrophysics Data System (ADS)

One might be tempted to assume that joint projects between partners in developed and developing countries follow a one-way path in which scientific knowledge is passed on from developed to less developed regions of the world. However, experience shows that projects of this type are generally neither successful nor sustainable unless a strong two-way exchange can be established. We present results of a multi-year collaboration focused on establishing a water resources modeling framework for South Africa that combines local knowledge with state-of-the-art modeling strategies to improve regional decision making. The result is a modeling framework that allows for the use of diverse data sources to reduce predictive uncertainty in a data sparse environment with limited local resources. We will present scientific study results, personal experience from the interaction and a broader outlook on scientific and educational needs for hydrology in Africa.

Wagener, T.; Hughes, D.

2011-12-01

108

Center to Advance Palliative Care  

MedlinePLUS

... Practice For Patients and Families Partner Sponsor Palliative Care Tools, Training & Technical Assistance The Center to Advance ... The Joint Commission (TJC) Advanced Certification for Palliative Care Programs Learn More Register for Audio Conferences Featured ...

109

Joint Genome Institute's Automation Approach and History  

SciTech Connect

Department of Energy/Joint Genome Institute (DOE/JGI) collaborates with DOE national laboratories and community users, to advance genome science in support of the DOE missions of clean bio-energy, carbon cycling, and bioremediation.

Roberts, Simon

2006-07-05

110

Advancements in Underwater Inspection.  

National Technical Information Service (NTIS)

This report summarizes the advancement of underwater inspection and nondestructive evaluation capabilities being made in the Structural Integrity Monitoring Program, a joint industry program in the United Kingdom. Inspection techniques are discussed that ...

K. R. Bitting

1989-01-01

111

Advances in Translational Medical Research.  

National Technical Information Service (NTIS)

We provide hope by promoting innovative research, recognizing untapped opportunities, creating partnerships, and guarding the public trust. Vision Find and fund the best research to eradicate diseases and support the warfighter for the benefit of the Amer...

M. Kaime

2011-01-01

112

Bayesian Variable Selection with Joint Modeling of Categorical and Survival Outcomes: An Application to Individualizing Chemotherapy Treatment in Advanced Colorectal Cancer  

PubMed Central

Summary Colorectal cancer is the second leading cause of cancer related deaths in the United States, with more than 130,000 new cases of colorectal cancer diagnosed each year. Clinical studies have shown that genetic alterations lead to different responses to the same treatment, despite the morphologic similarities of tumors. A molecular test prior to treatment could help in determining an optimal treatment for a patient with regard to both toxicity and efficacy. This article introduces a statistical method appropriate for predicting and comparing multiple endpoints given different treatment options and molecular profiles of an individual. A latent variable-based multivariate regression model with structured variance covariance matrix is considered here. The latent variables account for the correlated nature of multiple endpoints and accommodate the fact that some clinical endpoints are categorical variables and others are censored variables. The mixture normal hierarchical structure admits a natural variable selection rule. Inference was conducted using the posterior distribution sampling Markov chain Monte Carlo method. We analyzed the finite-sample properties of the proposed method using simulation studies. The application to the advanced colorectal cancer study revealed associations between multiple endpoints and particular biomarkers, demonstrating the potential of individualizing treatment based on genetic profiles.

Chen, Wei; Ghosh, Debashis; Raghunathan, Trivellore E.; Sargent, Daniel J.

2010-01-01

113

CCS/CAR/CANM/CNCS/CanSCMR joint position statement on advanced noninvasive cardiac imaging using positron emission tomography, magnetic resonance imaging and multidetector computed tomographic angiography in the diagnosis and evaluation of ischemic heart disease - executive summary  

PubMed Central

BACKGROUND: Over the past few decades, advanced imaging modalities with excellent diagnostic capabilities have emerged. The aim of the present position statement was to systematically review existing literature to define Canadian recommendations for their clinical use. METHODS: A systematic literature review to 2005 was conducted for positron emission tomography (PET), multidetector computed tomographic angiography and magnetic resonance imaging (MRI) in ischemic heart disease. Papers that met the criteria were reviewed for accuracy, prognosis data and study quality. Recommendations were presented to primary and secondary panels of experts, and consensus was achieved. RESULTS: Indications for PET include detection of coronary artery disease (CAD) with perfusion imaging, and defining viability using fluorodeoxyglucose to determine left ventricular function recovery and/or prognosis after revascularization (class I). Detection of CAD in patients, vessel segments and grafts using computed tomographic angiography was considered class IIa at the time of the literature review. Dobutamine MRI is class I for CAD detection and, along with late gadolinium enhancement MRI, class I for viability detection to predict left ventricular function recovery. Imaging must be performed at institutions and interpreted by physicians with adequate experience and training. CONCLUSIONS: Cardiac imaging using advanced modalities (PET, multidetector computed tomographic angiography and MRI) is useful for CAD detection, viability definition and, in some cases, prognosis. These modalities complement the more widespread single photon emission computed tomography and echocardiography. Given the rapid evolution of technology, initial guidelines for clinical use will require regular updates. Evaluation of their integration in clinical practice should be ongoing; optimal use will require proper training. A joint effort among specialties is recommended to achieve these goals.

Beanlands, RSB; Chow, BJW; Dick, A; Friedrich, MG; Gulenchyn, KY; Kiess, M; Leong-Poi, H; Miller, RM; Nichol, G; Freeman, M; Bogaty, P; Honos, G; Hudon, G; Wisenberg, G; Van Berkom, J; Williams, K; Yoshinaga, K; Graham, J

2007-01-01

114

Adapting to Urban Warfare  

Microsoft Academic Search

Urban operations currently are of great concern to the defense community. J9, the Experimentation Directorate of USJFCOM, and the Joint Advanced Warfighting Program currently are conducting an experiment to investigate concepts for applying future technologies to joint urban operations. The first phase of the experiment focused on employing future sensors to remotely monitor and understand enemy operations in a foreign

Andy Ceranowicz; Mark Torpey

2005-01-01

115

Periprosthetic joint infection: Current concept.  

PubMed

Periprosthetic joint infection (PJI) is one of the most devastating and costly complications following total joint arthroplasty (TJA). Diagnosis and management of PJI is challenging for surgeons. There is no "gold standard" for diagnosis of PJI, making distinction between septic and aseptic failures difficult. Additionally, some of the greatest difficulties and controversies involve choosing the optimal method to treat the infected joint. Currently, there is significant debate as to the ideal treatment strategy for PJI, and this has led to considerable international variation in both surgical and nonsurgical management of PJI. In this review, we will discuss diagnosis and management of PJI following TJA and highlight some recent advances in this field. PMID:23531512

Aggarwal, Vinay K; Rasouli, Mohammad R; Parvizi, Javad

2013-01-01

116

Jointness: A Selected Bibliography.  

National Technical Information Service (NTIS)

JDEIS is the Joint Doctrine, Education and Training Community Electronic Information System. It encompasses a searchable Joint Doctrine Database, a Joint Education section that includes the JPME Prospective Research Topics Database, as well as award-winni...

L. Garder

2010-01-01

117

The influence of hydrogen charging on the notch tensile properties and fracture behaviour of dissimilar weld joints of advanced Cr–Mo–V and Cr–Ni–Mo creep-resistant steels  

Microsoft Academic Search

The influence of hydrogen charging on the room-temperature tensile properties and fracture behaviour of two dissimilar weld joints has been investigated. The weld joints were either ferritic\\/ferritic (T91\\/STN15128) or ferritic\\/austenitic (T91\\/TP316H). The tensile tests were carried out using the samples with a circumferential notch. The position of notch was individually located in different weld joint regions, either in the heat-affected

J. Blach; L. Falat; P. Ševc

2011-01-01

118

Research, part of a Special Feature on Implementing Participatory Water Management: Recent Advances in Theory, Practice and Evaluation Supporting the Shift from State Water to Community Water: Lessons from a Social Learning Approach to Designing Joint Irrigation Projects in Morocco  

Microsoft Academic Search

This paper focuses on the evaluation of a participatory approach aimed at supporting groups of small-scale farmers in the design of joint drip irrigation projects. Our idea was to create a sustainable social learning environment in which they could acquire adaptive knowledge about new irrigation technology and about designing and managing a joint irrigation project while at the same time

Marcel Kuper; Mathieu Dionnet; Ali Hammani; Younes Bekkar; Patrice Garin; Bettina Bluemling

119

Anesthesia for joint replacement surgery: Issues with coexisting diseases  

PubMed Central

The first joint replacement surgery was performed in 1919. Since then, joint replacement surgery has undergone tremendous development in terms of surgical technique and anesthetic management. In this era of nuclear family and independent survival, physical mobility is of paramount importance. In recent years, with an increase in life expectancy, advances in geriatric medicine and better insurance coverage, the scenario of joint replacement surgery has changed significantly. Increasing number of young patients are undergoing joint replacement for pathologies like rheumatoid arthritis and ankylosing spondylitis. The diverse pathologies and wide range of patient population brings unique challenges for the anesthesiologist. This article deals with anesthetic issues in joint replacement surgery in patients with comorbidities.

Kakar, P N; Roy, Preety Mittal; Pant, Vijaya; Das, Jyotirmoy

2011-01-01

120

Joint Injection/Aspiration  

MedlinePLUS

... osteoarthritis. What usually is injected into the joint space? Corticosteroids (such as methylprednisolone and triamcinolone formulated to ... for producing inflammation and pain within the joint space. Although corticosteroids may also be successfully used in ...

121

Arthritis: Metacarpophalangeal (MP) Joint  

MedlinePLUS

... activities. Arthritis is the wearing away of the cartilage at a joint. Cartilage is the coating layer of tissue on the ... that acts as a shock-absorber. Loss of cartilage can lead to joint destruction and a shift ...

122

Large displacement spherical joint  

DOEpatents

A new class of spherical joints has a very large accessible full cone angle, a property which is beneficial for a wide range of applications. Despite the large cone angles, these joints move freely without singularities.

Bieg, Lothar F. (Albuquerque, NM); Benavides, Gilbert L. (Albuquerque, NM)

2002-01-01

123

Collapsible mechanical joint  

NASA Astrophysics Data System (ADS)

A mechanical joint that can be configured to be either flexible or rigid is presented. The mechanical joint comprises three members which are flexibly attached to each other with a cable. When the cable is tightened, the three members come together to form a rigid joint capable of withstanding structural loads.

Robertson, Glen A.

1993-11-01

124

Bolted Hybrid Joints.  

National Technical Information Service (NTIS)

The report presents the results of an analytical study of hybrid steel butt joints of A36, A440 and A514 steel. The joints were fastened by either A325 or A490 bolts. The studies were designed to determine the effect of various variables on the joint stre...

R. Kormanik J. W. Fisher

1966-01-01

125

Study of Micromechanical Properties of Adhesive Bonded Joints.  

National Technical Information Service (NTIS)

The second quarterly report gives a program to measure the mechanical properties of adhesive bonded joints, utilizing advanced high precision microstrain techniques. During the current report period, progress was noted as follows: (1) The tensile behavior...

J. L. Rutherford M. C. Franzblau

1968-01-01

126

Applications of Joint Tactical Simulation Modeling.  

National Technical Information Service (NTIS)

Advances in technology allow Computer Simulation Models (CSM) to be used as a powerful tool to aid military decision makers. This thesis explores the usefulness of one of these models, the Joint Tactical Simulation (JTS). First, this thesis outlines the i...

S. VanLandingham

1997-01-01

127

HDFx: a novel biologic immunomodulator is therapeutically -effective in hemorrhagic and intestinal-ischemic shock: importance of microcirculatory-immunological interactions and their potential implications for the warfighter and disaster victims  

PubMed Central

Recently, we have reported on the discovery of a new, conserved protein (35-40 kD), termed HDFx, that protects rats, guinea-pigs, mice and rabbits against lethal hemorrhage, endotoxins, and traumatic injury when given, systemically, as a pretreatment. HDFx was also found to stimulate several arms of the immune system. The present report demonstrates, for the first time, that HDFx ,when administered post-hemorrhage and post-intestinal ischemia shock -trauma, yields increased survival rates, elevates falling arterial blood pressures, possesses unique actions in the microvasculature, stimulates depressed RES phagocytosis (normally observed in animals and humans during blood loss, sepsis and trauma), and preserves cytokine levels in lymphocytes obtained from animals subjected to hemorrhage and traumatic shock. We believe that HDFx presents a potential brand new therapeutic approach:1)for the injured warfighter on the battlefield, 2)for victims of major disasters, 3)as an adjunct for patients undergoing high -risk surgical procedures commonly found in open-heart surgery, cancers, and in neurosurgeries. Use of HDFx could potentially allow oncologists to decrease chemotherapy dosing, while increasing patient survival chances.

Altura, Burton M; Carella, Anthony; Gebrewold, Asefa

2011-01-01

128

Strategic Mobility 21: SM21 CONOPS Revised - Phase II, Joint Force Deployment and Distribution Support Platform: Joint Operational Concept.  

National Technical Information Service (NTIS)

The Strategic Mobility 21 (SM21) Joint Deployment and Distribution Process Technology Demonstration program was mandated by Congress to research, develop, and demonstrate advanced multi-modal logistics technology. The program resulted in the development o...

L. G. Mallon

2009-01-01

129

Army Communicator. Volume 33, Number 3, Summer 2008. WIN-T: Increasing the Power of Battlefield Communications.  

National Technical Information Service (NTIS)

Contents: WIN-T enabling battle command for the Joint Warfighter through total system Life Cycle Management by MG Dennis L. Via; Advancing the Army through an innovative process by BG Nick Justice; WIN-T Information = combat power magnifies effects by COL...

2008-01-01

130

Prosthetic advances.  

PubMed

Much of the current prosthetic technology is based on developments that have taken place during or directly following times of war. These developments have evolved and improved over the years, and now there are many more available options to provide a comfortable, cosmetic, and highly functional prosthesis. Even so, problems with fit and function persist. Recent developments have addressed some of the limitations faced by some military amputees. On-board microprocessor-controlled joints are making prosthetic arms and legs more responsive to environmental barriers and easier to control by the user. Advances in surgical techniques will allow more intuitive control and secure attachment to the prosthesis. As surgical techniques progress and permeate into standard practice, more sophisticated powered prosthetic devices will become commonplace, helping to restore neuromuscular loss of function. Prognoses following amputation will certainly rise, factoring into the surgeon's decision to attempt to save a limb versus perform an amputation. PMID:22381512

Harvey, Zach T; Potter, Benjamin K; Vandersea, James; Wolf, Erik

2012-01-01

131

An analysis of the flow field in the region of the ASRM field joints  

Microsoft Academic Search

The flow field in the region of a solid rocket motor field joint is very important since fluid dynamic and mechanical propellant stresses can couple to cause a motor failure at a joint. Presented here is an examination of the flow field in the region of the Advanced Solid Rocket Motor (ASRM) field joints. The analyses were performed as a

Richard A. Dill; Harold R. Whitesides

1992-01-01

132

Information management services provided by the Joint Battlespace Infosphere (JBI) Mercury initiative  

NASA Astrophysics Data System (ADS)

The revolution of network centric operations will be achieved incrementally. Information Management is centric to this seamless transition of warfighter capabilities across enclaves, services, and platforms. Air Force Research Lab has teamed with industry, defense, and academic leaders to research and develop technologies to solve the information management needs of the DoD. Joint Battlespace Infosphere Mercury is an AFRL initiative to develop information management software using the best of breed commercial technologies. This session describes (1) the capabilities and goals of JBI Mercury, (2) design highlights and lessons learned, and (3) how to obtain a license-cost free copy of JBI Mercury and collaborate with the JBI community. JBI Mercury provides information management services for publish, subscribe, and query for XML/Binary information across a local or wide area network using Java, C#, and web services bindings. Multiple, dynamic messaging connectors and discovery technologies are mediated by a www.openwings.org compliant framework. The JBI Mercury services are dynamically connectable (dynamic plug-and-play connectors), dynamically configurable to meet mission requirements (context policies), and dynamically replaceable (technology change). Flexibility and reliability are provided by the ability to achieve ad-hoc integration of new users and new service components as they enter or leave the network.

Merrill, Derek

2005-05-01

133

Joint warfare system (JWARS)  

Microsoft Academic Search

The Joint Warfare System (JWARS) is a campaign-level model of military operations that is currently being developed under contract by the Office of the Secretary of Defense (OSD) for use by OSD, the Joint Staff, the Services, and the War fighting Commands. The behavior of military forces can be simulated from ports of embarkation through to their activities in combat.

A. Simlote

2003-01-01

134

Joint Seal Materials.  

National Technical Information Service (NTIS)

Three major experimental field installations of approximately 7 types of joint sealing materials were used to compare and evaluate the products of numerous sealant manufacturers. The sealants were placed in contraction joints (3/8 in. x 2 in.) which were ...

J. G. F. Hiss J. R. Lambert W. M. McCarty

1968-01-01

135

Joint remote state preparation  

Microsoft Academic Search

Alice, Bob and Charlie are three remote parties. Alice and Bob share the classical knowledge of a secret qubit state. We consider the following question: 'how can Alice and Bob jointly prepare the qubit state for Charlie?' Two different protocols are proposed for such a joint remote state preparation. The first protocol uses a single GHZ state while the second

Ba An Nguyen; Jaewan Kim

2008-01-01

136

The influence of talonavicular versus double arthrodesis on load dependent motion of the midtarsal joint  

Microsoft Academic Search

Background   Today the most frequently used operative procedures in advanced arthritis of the hindfoot joints are isolated talonavicular\\u000a arthrodesis and double arthrodesis (involving the talonavicular and calcaneocuboid joints, i.e. the Chopart joint). This in\\u000a vitro study investigates whether the fusion of the talonavicular joint alone can provide the hindfoot, as well as a midfoot,\\u000a with comparable biomechanical stability as the

Simon Thelen; Jürgen Rütt; Michael Wild; Tim Lögters; Joachim Windolf; Jürgen Koebke

2010-01-01

137

Equivalent Continuum Modeling for Shock Wave Propagation in Jointed Media  

SciTech Connect

This study presents discrete and continuum simulations of shock wave propagating through jointed media. The simulations were performed using the Lagrangian hydrocode GEODYN-L with joints treated explicitly using an advanced contact algorithm. They studied both isotropic and anisotropic joint representations. For an isotropically jointed geologic medium, the results show that the properties of the joints can be combined with the properties of the intact rock to develop an equivalent continuum model suitable for analyzing wave propagation through the jointed medium. For an anisotropically jointed geologic medium, they found it difficult to develop an equivalent continuum (EC) model that matches the response derived from mesoscopic simulation. They also performed simulations of wave propagation through jointed media. Two appraoches are suggested for modeling the rock mass. In one approach, jointed are modeled explicitly in a Lagrangian framework with appropriate contact algorithms used to track motion along the interfaces. In the other approach, the effect of joints is taken into account using a constitutive model derived from mesoscopic simulations.

Vorobiev, O; Antoun, T

2009-12-11

138

Joint action: bodies and minds moving together.  

PubMed

The ability to coordinate our actions with those of others is crucial for our success as individuals and as a species. Progress in understanding the cognitive and neural processes involved in joint action has been slow and sparse, because cognitive neuroscientists have predominantly studied individual minds and brains in isolation. However, in recent years, major advances have been made by investigating perception and action in social context. In this article we outline how studies on joint attention, action observation, task sharing, action coordination and agency contribute to the understanding of the cognitive and neural processes supporting joint action. Several mechanisms are proposed that allow individuals to share representations, to predict actions, and to integrate predicted effects of own and others' actions. PMID:16406326

Sebanz, Natalie; Bekkering, Harold; Knoblich, Günther

2006-01-10

139

Transforming Logistics: Joint Theater Logistics.  

National Technical Information Service (NTIS)

Effective and efficient management of joint theater logistics is a challenge for theater commanders. Current doctrine for joint theater logistics management provides broad non-directive guidance for developing a joint theater logistics system that can opt...

S. W. Pate

2006-01-01

140

Advanced Electromagnetic Methods for Aerospace Vehicles.  

National Technical Information Service (NTIS)

The Advanced Helicopter Electromagnetics (AHE) Industrial Associates Program has fruitfully completed its fourth year. Under the support of the AHE members and the joint effort of the research team, new and significant progress has been achieved in the ye...

C. A. Balanis W. Sun E. El-sharawy J. T. Aberle C. R. Birtcher

1993-01-01

141

Joining of advanced materials by superplastic deformation  

DOEpatents

A method for utilizing superplastic deformation with or without a novel joint compound that leads to the joining of advanced ceramic materials, intermetallics, and cermets. A joint formed by this approach is as strong as or stronger than the materials joined. The method does not require elaborate surface preparation or application techniques.

Goretta, Kenneth C. (Downers Grove, IL); Routbort, Jules L. (Hinsdale, IL); Gutierrez-Mora, Felipe (Woodridge, IL)

2008-08-19

142

ASCO/FDA JOINT  

Center for Drug Evaluation (CDER)

Text VersionPage 1. ASCO/FDA JOINT LUNG CANCER PANEL 2002-2003 Paul Bunn, MD (NCE-Chair) University of Colorado Cancer Center Denver, CO ... More results from www.fda.gov/downloads/drugs/developmentapprovalprocess

143

Joint Agency Turbulence Experiment.  

National Technical Information Service (NTIS)

Doppler radar data acquired during the 1981 Joint Agency Turbulence Experiment are presented. Pulse-pair processed reflectivity factor and Doppler spectrum mean data collected during volume scan periods are displayed over constant height surfaces at aircr...

A. R. Bohne

1983-01-01

144

Joint fluid Gram stain  

MedlinePLUS

... and shape of the cells help identify the bacteria. ... Abnormal results mean bacteria were seen on the Gram stain. This may be a sign of a joint infection, for example, gonococcal arthritis or arthritis due to Staphylococcus aureus.

145

Joint aspiration and injection.  

PubMed

Joint aspiration/injection is an invaluable procedure for the diagnosis and treatment of joint disease. The knee is the commonest site to require aspiration although any non-axial joint is accessible for obtaining synovial fluid. Septic arthritis and crystal arthritis can be readily diagnosed by aspirating synovial fluid. Intra-articular injection of long-acting insoluble corticosteroids produces rapid resolution of inflammation in most injected joints and is a well established procedure in rheumatological practice. The technique involves only a knowledge of basic anatomy and should not be unduly painful for the patient. Provided sterile equipment and a sensible, aseptic approach are used it is a safe procedure. This chapter addresses the indications, technical principals, expected benefits and risks of intra-articular corticosteroid injection. The use of other intra-articular injections including osmic acid, radioisotopes and hyaluronic acid, which are less universally utilised than intra-articular corticosteroid, will also be addressed. PMID:15939363

Courtney, Philip; Doherty, Michael

2005-06-01

146

Joint Healthcare Manpower Standards.  

National Technical Information Service (NTIS)

The purpose of the Standard is to ensure that the peacetime staffing requirements of the Military Health Services System (MHSS) provide quality medical care in a productive environment. The Joint Healthcare Manpower Standards (JHMS) provide the Department...

V. Melidosian

1989-01-01

147

Joint Services Electronics Program.  

National Technical Information Service (NTIS)

An annual report of the JSEP (Joint Services Electronics Program) in solid state electronics, quantum electronics, information electronics, control and optimization, and electromagnetic phenomena is presented. Results of the research to date are summarize...

M. Tinkham

1991-01-01

148

Joint Services Electronics Program.  

National Technical Information Service (NTIS)

An annual report of the JSEP (Joint Services Electronics Program) in solid state electronics, quantum electronics, information electronics, control and optimization, and electromagnetic phenomena is presented. Results of the research to date are summarize...

M. Tinkham

1987-01-01

149

Joint Services Electronics Program.  

National Technical Information Service (NTIS)

This annual report of the JSEP (Joint Services Electronic Program) in solid state electronics, quantum electronics, information electronics, control and optimization, and electromagnetic phenomenon is presented. Results of the research to date are summari...

M. Tinkham

1985-01-01

150

Joint Services Electronics Program.  

National Technical Information Service (NTIS)

An annual report of the JSEP (Joint Services Electronics Program) in Electromagnetics, Quantum Electronics, Solid State Electronics, Materials and Devices and Information System is presented. In addition, results of the research to date are summarized and...

W. G. Oldham

1986-01-01

151

Joint Services Electronics Program.  

National Technical Information Service (NTIS)

An annual report of the JSEP (Joint Services Electronic Program) in solid state electronics, quantum electronics, information electronics control and optimization and electromagnetic phenomenon is presented. Results of the research to date are summarized ...

M. Tinkham

1985-01-01

152

Joint Services Electronics Program.  

National Technical Information Service (NTIS)

An annual report of the JSEP (Joint Services Electronics Program) in solid state electronics, quantum electronics, information electronics, control and optimization, and electromagnetic phenomena is presented. Results of the research to date are summarize...

M. Tinkham

1986-01-01

153

Prosthetic Joint Infections  

PubMed Central

Prosthetic joint infections represent a major therapeutic challenge for both healthcare providers and patients. This paper reviews the predisposing factors, pathogenesis, microbiology, diagnosis, treatment and prophylaxis of prosthetic joint infection. The most optimal management strategy should be identified based on a number of considerations including type and duration of infection, antimicrobial susceptibility of the infecting pathogen, condition of infected tissues and bone stock, patient wishes and functional status.

Aslam, Saima; Darouiche, Rabih O.

2012-01-01

154

Joint remote state preparation  

NASA Astrophysics Data System (ADS)

Alice, Bob and Charlie are three remote parties. Alice and Bob share the classical knowledge of a secret qubit state. We consider the following question: 'how can Alice and Bob jointly prepare the qubit state for Charlie?' Two different protocols are proposed for such a joint remote state preparation. The first protocol uses a single GHZ state while the second one uses a pair of EPR states as the quantum channel whose entanglement is not necessarily maximal.

Nguyen, Ba An; Kim, Jaewan

2008-05-01

155

High pressure ceramic joint  

DOEpatents

Many recuperators have components which react to corrosive gases and are used in applications where the donor fluid includes highly corrosive gases. These recuperators have suffered reduced life, increased service or maintenance, and resulted in increased cost. The present joint when used with recuperators increases the use of ceramic components which do not react to highly corrosive gases. Thus, the present joint used with the present recuperator increases the life, reduces the service and maintenance, and reduces the increased cost associated with corrosive action of components used to manufacture recuperators. The present joint is comprised of a first ceramic member, a second ceramic member, a mechanical locking device having a groove defined in one of the first ceramic member and the second ceramic member. The joint and the mechanical locking device is further comprised of a refractory material disposed in the groove and contacting the first ceramic member and the second ceramic member. The present joint mechanically provides a high strength load bearing joint having good thermal cycling characteristics, good resistance to a corrosive environment and good steady state strength at elevated temperatures.

Ward, Michael E. (Poway, CA); Harkins, Bruce D. (San Diego, CA)

1993-01-01

156

Clinical features of symptomatic patellofemoral joint osteoarthritis  

PubMed Central

Introduction Patellofemoral joint osteoarthritis (OA) is common and leads to pain and disability. However, current classification criteria do not distinguish between patellofemoral and tibiofemoral joint OA. The objective of this study was to provide empirical evidence of the clinical features of patellofemoral joint OA (PFJOA) and to explore the potential for making a confident clinical diagnosis in the community setting. Methods This was a population-based cross-sectional study of 745 adults aged ?50 years with knee pain. Information on risk factors and clinical signs and symptoms was gathered by a self-complete questionnaire, and standardised clinical interview and examination. Three radiographic views of the knee were obtained (weight-bearing semi-flexed posteroanterior, supine skyline and lateral) and individuals were classified into four subsets (no radiographic OA, isolated PFJOA, isolated tibiofemoral joint OA, combined patellofemoral/tibiofemoral joint OA) according to two different cut-offs: 'any OA' and 'moderate to severe OA'. A series of binary logistic and multinomial regression functions were performed to compare the clinical features of each subset and their ability in combination to discriminate PFJOA from other subsets. Results Distinctive clinical features of moderate to severe isolated PFJOA included a history of dramatic swelling, valgus deformity, markedly reduced quadriceps strength, and pain on patellofemoral joint compression. Mild isolated PFJOA was barely distinguished from no radiographic OA (AUC 0.71, 95% CI 0.66, 0.76) with only difficulty descending stairs and coarse crepitus marginally informative over age, sex and body mass index. Other cardinal signs of knee OA - the presence of effusion, bony enlargement, reduced flexion range of movement, mediolateral instability and varus deformity - were indicators of tibiofemoral joint OA. Conclusions Early isolated PFJOA is clinically manifest in symptoms and self-reported functional limitation but has fewer clear clinical signs. More advanced disease is indicated by a small number of simple-to-assess signs and the relative absence of classic signs of knee OA, which are predominantly manifestations of tibiofemoral joint OA. Confident diagnosis of even more advanced PFJOA may be limited in the community setting.

2012-01-01

157

A safe joint with a joint torque sensor  

Microsoft Academic Search

In this study, a safe joint with a joint torque sensor is presented. The safe joint, named “Spring-Clutch”, is a simple passive mechanism that consists of a spring, a cam, and a joint torque sensor. When the torque applied is less than a pre-set threshold, the Spring-Clutch acts as a rigid joint between the input and output. However, if the

Dong-Eun Choi; Gi-Hun Yang; Junho Choi; Woosub Lee; Changhyun Cho; Sungchul Kang

2011-01-01

158

New plastic joints for plastic orthoses  

Microsoft Academic Search

Plastic joints for orthoses have more advantages than metal joints. They are lightweight, noiseless comfortable to use, rust proof, corrosion free, and radiolucent. Two types of plastic joints were developed by the authors, one for the ankle joint and the other for the knee joint, elbow joint or hip joint. Polypropylene was chosen as the joint material because of its

H. WATANABE; T. KUTSUNA; H. MORINAGA; T. OKABE

159

Of bugs and joints: the relationship between infection and joints.  

PubMed

The association between microbes and joints has existed since antiquity, and remains complex. Diagnosis is often times difficult to determine despite highly suspicious clinical characteristics for the presence of an underlying infection. Over the several past decades, considerable advances have occurred in diagnostic methodologies and therapy. However, the morbidity and mortality of septic arthritis remains high. Great advances have occurred in the diagnosis, pathogenesis, and therapeutic management of reactive arthritis, and there is evidence that when the responsible microorganism is Chlamydia trachomathis, complete remission and cure is possible. Emergent infections, especially viral, has been recognized, i.e. HIV, hepatitis C, and most recently Chikengunya virus, and in the case of HIV associated articular manifestations, the introduction of HAART has resulted in a decrease in the incidence and development of newer complications such as the immune reconstitution syndrome. The infectious etiology of rheumatoid arthritis is being strongly considered once again, and the exciting association with periodontal disease is at the forefront of intense research. The gut microbiota is also being investigated and new and most interesting data is being gathered of the potential role of commensal gut organisms and the pathogenesis of rheumatoid arthritis. PMID:22944142

Espinoza, Luis R; García-Valladares, Ignacio

2012-09-01

160

INDICATIONS FOR SACROILIAC JOINT FUSION  

Microsoft Academic Search

Sacroiliac joint fusion remains a useful piece of the surgical armamentarium. Newer percutaneous techniques for fusion supplement the older established procedures. The sacroiliac joint functions in the transmission of forces from the spine to the lower extremities and vice versa. It is a diarthrodial synovial joint that connects the sacrum to the ilium. The sacroiliac joint is unusual in that

Christopher A. Iobst; John A. Glaser

161

Joint impingement syndrome: clinical features  

Microsoft Academic Search

Joint impingement is a painful syndrome caused by the friction of joint tissues, which is both the cause and the effect of altered joint biomechanics. From the anatomical and clinical viewpoints, these syndromes are classified as bone impingement, soft tissue impingement and entrapment neuropathy, depending on what joint portion impinges on the others. We considered the most important impingement syndromes

Andrea Billi; Alessia Catalucci; Antonio Barile; Carlo Masciocchi

1998-01-01

162

Serum levels of soluble receptor for advanced glycation end products and of S100 proteins are associated with inflammatory, autoantibody, and classical risk markers of joint and vascular damage in rheumatoid arthritis  

Microsoft Academic Search

INTRODUCTION: The receptor for advanced glycation end products (RAGE) is a member of the immunoglobulin superfamily of cell surface receptor molecules. High concentrations of three of its putative proinflammatory ligands, S100A8\\/A9 complex (calprotectin), S100A8, and S100A12, are found in rheumatoid arthritis (RA) serum and synovial fluid. In contrast, soluble RAGE (sRAGE) may prevent proinflammatory effects by acting as a decoy.

Yueh-Sheng Chen; Weixing Yan; Carolyn L Geczy; Matthew A Brown; Ranjeny Thomas

2009-01-01

163

A mathematical model for mapping EMG signal to joint torque for the human elbow joint using nonlinear regression  

Microsoft Academic Search

Numerous researchers have investigated the relationship between EMG and joint torque. Most of these studies use some conventional filtering (i.e. rectification followed by low pass filtering) to estimate the electromyogram (EMG) amplitude and then relate it to the joint torque. Currently some advanced pre-processing techniques (i.e. signal whitening) are also used to estimate the EMG amplitude and then relate it

Khalil Ullah; Jung-Hoon Kim

2009-01-01

164

Design for enhanced solder joint reliability of integrated passives device under board level drop test and thermal cycling test  

Microsoft Academic Search

The integrated passives device (IPD) is an advanced substrate with embedded passives. The device is mounted to the board with lead-free solder joints. Detailed solder joint reliability models are established for both drop test and thermal cycling test for IPD packages. For drop test, the critical solder joints are observed along the outermost row in the PCB length direction. For

Tong Yan Tee; Hun Shen Ng; Zhaowei Zhongb

2003-01-01

165

Distal radioulnar joint injuries.  

PubMed

Distal radioulnar joint is a trochoid joint relatively new in evolution. Along with proximal radioulnar joint, forearm bones and interosseous membrane, it allows pronosupination and load transmission across the wrist. Injuries around distal radioulnar joint are not uncommon, and are usually associated with distal radius fractures,fractures of the ulnar styloid and with the eponymous Galeazzi or Essex_Lopresti fractures. The injury can be purely involving the soft tissue especially the triangular fibrocartilage or the radioulnar ligaments. The patients usually present with ulnar sided wrist pain, features of instability, or restriction of rotation. Difficulty in carrying loads in the hand is a major constraint for these patients. Thorough clinical examination to localize point of tenderness and appropriate provocative tests help in diagnosis. Radiology and MRI are extremely useful, while arthroscopy is the gold standard for evaluation. The treatment protocols are continuously evolving and range from conservative, arthroscopic to open surgical methods. Isolated dislocation are uncommon. Basal fractures of the ulnar styloid tend to make the joint unstable and may require operative intervention. Chronic instability requires reconstruction of the stabilizing ligaments to avoid onset of arthritis. Prosthetic replacement in arthritis is gaining acceptance in the management of arthritis. PMID:23162140

Thomas, Binu P; Sreekanth, Raveendran

2012-09-01

166

Distal radioulnar joint injuries  

PubMed Central

Distal radioulnar joint is a trochoid joint relatively new in evolution. Along with proximal radioulnar joint, forearm bones and interosseous membrane, it allows pronosupination and load transmission across the wrist. Injuries around distal radioulnar joint are not uncommon, and are usually associated with distal radius fractures,fractures of the ulnar styloid and with the eponymous Galeazzi or Essex_Lopresti fractures. The injury can be purely involving the soft tissue especially the triangular fibrocartilage or the radioulnar ligaments. The patients usually present with ulnar sided wrist pain, features of instability, or restriction of rotation. Difficulty in carrying loads in the hand is a major constraint for these patients. Thorough clinical examination to localize point of tenderness and appropriate provocative tests help in diagnosis. Radiology and MRI are extremely useful, while arthroscopy is the gold standard for evaluation. The treatment protocols are continuously evolving and range from conservative, arthroscopic to open surgical methods. Isolated dislocation are uncommon. Basal fractures of the ulnar styloid tend to make the joint unstable and may require operative intervention. Chronic instability requires reconstruction of the stabilizing ligaments to avoid onset of arthritis. Prosthetic replacement in arthritis is gaining acceptance in the management of arthritis.

Thomas, Binu P; Sreekanth, Raveendran

2012-01-01

167

Advances in Plastic Surgery  

PubMed Central

Recent progress in plastic surgery has been rapid and many new techniques have been developed. Reconstructive procedures have been advanced by a better understanding of the anatomy of the blood supply to skin and muscle, with the subsequent development of the use of axial flaps, musculocutaneous flaps and neurosensory flaps. Burn treatment has advanced greatly, making it possible to successfully treat larger and more complicated burns. The development of microsurgery has made possible free-flap transfer and replantation of amputated parts. Advances in surgical procedures on the hands include a realization that primary repair of lacerated tendons and nerves will give good results. Replacement joints have been developed that can be used in hands for joints destroyed by arthritis or trauma. Craniofacial surgery is a new field of endeavor in plastic surgery, involving new techniques that can be used to treat exophthalmos of Graves' disease and the facial deformities resulting from gigantism and acromegaly. Head and neck procedures have advanced, with the emphasis on immediate reconstruction using new flaps. Techniques for treating cleft lip and palate have been refined. Encouraging results have been reported in the treatment of nevus flammeus with argon lasers. In aesthetic surgical procedures, the aim is for safety and consistent long-lasting results. Improved understanding of the physiology and treatment of radionecrosis has evolved.

McDonald, Harold D.; Vasconez, Luis O.

1982-01-01

168

[Knee joint cyst].  

PubMed

Ninety cases of knee joint cysts were treated surgically. This included 50 patients with rheumatoid arthritis, 22 patients with degenerative-deforming changes, ten children with true cysts, and eight ones with post-traumatic cysts. Double-contrast X-ray examination with Lipiodol Ultra-fluid and air is of the best diagnostic value. All cases of knee joint cysts were treated surgically with a careful plastic closure of cyst gate. For this purpose the authors used the arcus tendon of the semi-membranous muscle. In cases of rheumatoid arthritis and degenerative changes cyst removal was preceded by synovectomy of the knee joint. Early and remote were good, no recurrence was observed. PMID:1299044

Noczy?ski, L; Benarz, W; Wojczys, R

1992-11-01

169

Energy for the Warfighter: Operational Energy Strategy.  

National Technical Information Service (NTIS)

For the first time, the Department of Defense (DoD) is publishing a strategy to transform the way the Department consumes energy in military operations, consistent with 10 U.S.C. section 138c. Section 138c establishes an Assistant Secretary of Defense for...

2011-01-01

170

Improving Performance Efficiency in the Warfighter.  

National Technical Information Service (NTIS)

The goal of this project is to design novel compounds that selectively bind estrogen receptor beta ER(3) to alleviate fear and anxiety- related behaviors and enhance cognitive function ER(3) is a recently described member of the steroid/thyroid hormone re...

T. J. Wu

2007-01-01

171

Warfighter's Stress Response: Telemetric and Noninvasive Assessment.  

National Technical Information Service (NTIS)

The authors' investigations into the effects of stressful military training have shown that individuals exhibiting superior performance differ significantly from individuals exhibiting poor performance in their psychological and biological responses to st...

A. O'Donnell C. A. Morgan E. Jovanov F. Andrasik M. C. Prevost

2002-01-01

172

Wrist sensor for warfighter status monitor  

NASA Astrophysics Data System (ADS)

There is a pressing need to improve human status monitoring in the medical and military communities. The heart rate and breading rate are the most important human vital signs. The current heart rate and breading rate monitors are rather cumbersome, expensive, and usually confined to the intensive care unit or ambulatory setting. These techniques are therefore unavailable to certain applications, such as home care and military applications. The purpose of this work is to develop new methods and new technologies for heart rate and breathing rate monitoring. To accomplish this task, a novel optical acoustic laser sensor (OALS) is characterized and used to generate an optical signal corresponding to human heart beat and breathing. An application specific integrated circuit (ASIC) is developed for this unique compact human status monitor Extensive experimental data analysis and simulation are conducted to investigate robust digital signal processing (DSP) methods. The Gauss-Hermite wavelet transform (GHWT) is utilized as a time-frequency representative technique to provide a method for the detection of the very low frequency heart rate and breathing rate from the large and noisy biomedical lasergram (BLG) signal. A 915MHz RF transceiver provides a reliable wireless link for the monitor to receive commands or transmit the measurement results to a remote commander center. A complete micro-instrument based on the ideas and methods above are developed and tested. The results show that the heart rate and breathing rate could be measured under difficult environmental situations.

Chen, Wuping

2000-04-01

173

Joint polar satellite system  

NASA Astrophysics Data System (ADS)

The Joint Polar Satellite System (JPSS) is a joint NOAA/NASA mission comprised of a series of polar orbiting weather and climate monitoring satellites which will fly in a sun-synchronous orbit, with a 1330 equatorial crossing time. JPSS resulted from the decision to reconstitute the National Polar-orbiting Operational Environmental Satellite System (NPOESS) into two separate programs, one to be run by the Department of Defense (DOD) and the other by NOAA. This decision was reached in early 2010, after numerous development issues caused a series of unacceptable delays in launching the NPOESS system.

Trenkle, Timothy; Driggers, Phillip

2011-10-01

174

Thermomechanical Stress and Strain in Solder Joints During Electromigration  

NASA Astrophysics Data System (ADS)

Thermomechanical stress and strain in the solder joints of a dummy area array package were studied as electromigration occurred. A current density of 0.4 × 104 A/cm2 was applied to this package, constructed with 9 × 9 solder joints in a daisy chain, to perform the electromigration test. After 37 h, the first joint on the path of the electron flow broke off at the cathode, and the first three solder joints all exhibited a typical accumulation of intermetallic compounds at the anode. Different solder joints exhibited dissimilar electromigration states, such as steady state and nonsteady state. Finite element analysis indicated that during steady-state electromigration, although the symmetrical structure produced uniform distributions of current density and Joule heating in all solder joints, the distribution of temperature was nonuniform. This was due to the imbalanced heat dissipation, which in turn affected the distribution of thermomechanical stress and strain in the solder joints. The maximum thermomechanical stress and strain, as well the highest temperature and current crowding, appeared in the Ni/Cu layer of each joint. The strain in the Ni/Cu layer was significant along the z-axis, but was constrained in the x- y plane. The thermomechanical stress and strain increased with advancing electromigration; thus, a potential delamination between the Ni/Cu layer and the printed circuit board could occur.

Zhang, J. S.; Xi, H. J.; Wu, Y. P.; Wu, F. S.

2009-05-01

175

Design of a first metatarsophalangeal joint simulator.  

PubMed

Background: The use of total first metatarsophalangeal joint (MPJ) arthroplasty to treat patients in which the pain, due to a pathological joint, has not been relieved with a conservative method or for which the disease or disorder is at an advanced stage, is popular. Although meta-analysis of clinical results indicates that this surgical option is efficacious, there are problems with implant failure due to wear of the components. Although there is a plethora of designs of this type of implant in clinical use, there are no literature reports on total first MPJ simulators, which may be used to evaluate, for example, the wear rate of a total first MPJ implant. Methods: We designed such a simulator, guided by the biomechanics of the joint. Thus, for example, the implant under test will be articulated at least 40° dorsiflexion, under a 600 N loading, at 1 Hz. Furthermore, the testing stations will be configured to allow testing of any type of first MPJ implant. We also performed a finite element analysis (FEA) study of a model of an articulating station, subjected to a quasi-static load of 1200 N. Results: For an articulating station, 1) the highest von Mises stress occurred at the implant-fixture interface; and 2), for the other parts, the minimum factor of safety, against elastic failure, is approximately 9. Conclusions: The designed joint simulator is mechanically sound and may be used for wear testing of any type of first MPJ implant. PMID:24072371

Schlachter, Kelly; Lewis, Gladius

176

Neurometric Modeling Computational Modeling of Individual Brains.  

National Technical Information Service (NTIS)

Warfighters have benefited significantly from the enormous advances in digital technology over the past several decades. In contrast, too little of the considerable progress in neuroscience has been applied to improving warfighter performance. We believe ...

B. Naylor D. Ress R. Miikkulainen

2011-01-01

177

Medical Surveillance for a Soldier Centered Battlespace Awareness.  

National Technical Information Service (NTIS)

Recent advances in sensor technologies have enabled a net centric view of the battlespace, substantially increasing situational awareness for the warfighter. However, this net centric awareness has yet to be extended to the status of the warfighters thems...

D. D. Schmorrow G. Solhan A. A. Kruse

2004-01-01

178

Total Intravenous Anesthesia on the Battlefield.  

National Technical Information Service (NTIS)

The current conflicts in Afghanistan and Iraq have demonstrated the impressive advancements in warfighting technology at the military's disposal. The US military in the 21st century is an awesome warfighting machine that is continually looking to improve ...

J. McMasters K. Grathwohl L. H. Blackbourne P. Barras

2005-01-01

179

New Joint Sealants. Criteria, Design and Materials.  

ERIC Educational Resources Information Center

|Contents include--(1) sealing concrete joints, (2) sealing glass and metal joints, (3) metal and glass joint sealants from a fabricator's viewpoint, (4) a theory of adhesion for joint sealants, (5) geometry of simple joint seals under strain, (6) joint sealant specifications from a manufacturer's viewpoint, (7) joint sealant requirements from an…

Building Research Inst., Inc., Washington, DC.

180

Joint Fires Training Guide for a Corps Joint Task Force.  

National Technical Information Service (NTIS)

A detailed analysis of responsibilities, inputs, processes, outputs, and interactions was conducted for the staff elements and cells involved in joint fires at the Corps Joint Task Force level. This research product documents that analysis. The purpose of...

J. F. Love

1998-01-01

181

Position domain joint tracking  

Microsoft Academic Search

It was shown that the Vector Delay Lock Loop (VDLL) enhances the robustness of a GNSS receiver by exploiting the spatial correlation of the received signals. But due to the periodicity of the carrier, the VDLL only operates on the codephase and the carrier-frequency. In contrast to the VDLL, the Joint Tracking receiver manages to sustain the carrier-phase lock even

Kaspar Giger; C. Gu?nther

2010-01-01

182

First metatarsophalangeal joint arthrodesis.  

PubMed

First MTP joint arthrodesis continues to be a time-honored, effective, and valuable procedure as a primary or secondary surgery for various pathologies afflicting the first ray segment. Though commonly thought of as a salvage procedure, it has proven beneficial in the management of primary hallux limitus and rigidus, geriatric hallux valgus deformity, severe arthritis of any etiology, and conditions in which joint instability or deformity are not readily correctable by more traditional approaches. Since its initial description in the 1800s, the procedure has continued to be popular among orthopedic and podiatric surgeons. Success of the procedure is highly dependent on the position of fusion. Though surgeons are often fascinated and at times obsessed with a particular fixation technique, it cannot be over-emphasized that this takes a back seat to the importance of achieving proper position to meet the needs of an individual patient. Unlike joint resection or implant arthroplasty procedures, which commonly leave the hallux lacking stability and propulsion, first MPJ fusion has been shown to be effective during weight bearing and propulsion. The success enjoyed by the senior author continues to reinforce that motion is not necessary at the first MTP joint for good, pain-free function. PMID:15012033

Yu, Gerard V; Gorby, Paul O

2004-01-01

183

Clad metal joint closure  

SciTech Connect

A plasma arc spray overlay of cladding metals is used over joints between clad metal pieces to provide a continuous cladding metal surface. The technique permits applying an overlay of a high melting point cladding metal to a cladding metal surface without excessive heating of the backing metal.

Siebert, O.W.

1985-04-09

184

Dolphin Skeleton (Gliding Joint)  

NSDL National Science Digital Library

The dolphin is built to be sleek. Its body is made of almost entirely backbone (a gliding joint) which makes it very flexible under water. The ribs protect the inner organs of the dolphin and the tail beats from side to side, thrusting the animal forward.

Ketan Patel (California State University, Fullerton;)

2007-07-14

185

Joint Criminal Enterprise  

Microsoft Academic Search

The Joint Criminal Enterprise (JCE) doctrine has made an impressive appearance on the stage of the International Criminal Tribunal for the former Yugoslavia. However, the initial enthusiasm has faded somewhat recently as doubts about the doctrine's broad applicability have started to dominate the discussion. In this article, the author argues that we should not deplore the partial demise of the

Harmen van der Wilt

2007-01-01

186

Imaging the temporomandibular joint  

SciTech Connect

This book encompasses all imaging modalities as they apply to the Temporomandibular Joint and its disorders. The volume employs correlative line drawings to elaborate on diagnostic images. It helps teach methods of TMJ imaging and describes findings identified by different imaging modalities to both radiologists and dental clinicians.

Katzberg, R.W.; Manzione, J.V.; Westesson, P.L.

1988-01-01

187

BETTER BRAZED JOINTS  

Microsoft Academic Search

Brazing is presented as a technique for making high quality joints for ; use in corrosive environments and at elevated temperatures. The characteristics ; of an ideal, as well as commercially available brazing alloys based on silver, ; nickel, palladium, and gold are discussed. The conditions and equipment required ; for this type of brazing are described, as are the

1963-01-01

188

Evolving flexible joint morphologies  

Microsoft Academic Search

Transferring virtual robotic designs into physical robots has become possible with the development of 3D printers. Accurately simulating the performance of real robots in a virtual environment requires modeling a variety of conditions, including the physical composition of the robots themselves. In this paper, we investigate how modeling material flexibility through the use of a passive joint affects the resulting

Jared M. Moore; Philip K. McKinley

2012-01-01

189

Bladder Operated Robotic Joint.  

National Technical Information Service (NTIS)

This invention is a robotic joint which is operated by inflatable bladders and which can be used in applications where it is desired to move or hold an object. A support block supports an elongated plate to which is pivotally attached a finger. A tension ...

G. A. Robertson

1992-01-01

190

Design of an advanced helmet mounted display (AHMD)  

NASA Astrophysics Data System (ADS)

High fidelity visual display capability has long been a critical element in successfully training war-fighters. This paper presents the results of a project to develop an affordable, ergonomically designed, augmented reality, Advanced Helmet Mounted Display (AHMD) system. AHMD blends computer-generated data (symbology, synthetic imagery, enhanced imagery) with the actual and simulated visible environment. Critical requirements included ability to be used on the user"s own unmodified helmet, rapid self fitting and alignment, with a wide (100° x 50°) field of view (FOV), low mass and balanced center of mass (CM), maximized see-through (>60%) with image quality (>0.5 cy/mr resolution and >30:1 ANSI contrast ratio) that supports training. This paper will outline the design, incorporating a number of innovative concepts, manufacture and performance of the resulting AHMD. This innovation in visual display technology can be used to support deployable reconfigurable training solutions, traditional simulation requirements, UAV augmented reality, air traffic control and Command, Control, Communications, Computers, Intelligence, Surveillance, and Reconnaissance (C4ISR) applications.

Sisodia, Ashok; Riser, Andrew; Rogers, John R.

2005-05-01

191

Joint Laser Designation Procedures (JLASER).  

National Technical Information Service (NTIS)

This publication provides joint procedures for employing laser designators with target acquisition systems and laser-guided weapons to enhance the combat effectiveness of joint US forces. Application Procedures established in this publication apply to the...

1991-01-01

192

ADVANCED CUTTINGS TRANSPORT STUDY  

SciTech Connect

This report includes a review of the progress made in ACTF Flow Loop development and research during 90 days pre-award period (May 15-July 14, 1999) and the following three months after the project approval date (July15-October 15, 1999) The report presents information on the following specific subjects; (a) Progress in Advanced Cuttings Transport Facility design and development, (b) Progress report on the research project ''Study of Flow of Synthetic Drilling Fluids Under Elevated Pressure and Temperature Conditions'', (c) Progress report on the research project ''Study of Cuttings Transport with Foam Under LPAT Conditions (Joint Project with TUDRP)'', (d) Progress report on the research project ''Study of Cuttings Transport with Aerated Muds Under LPAT Conditions (Joint Project with TUDRP)'', (e) Progress report on the research project ''Study of Foam Flow Behavior Under EPET Conditions'', (f) Progress report on the instrumentation tasks (Tasks 11 and 12) (g) Activities towards technology transfer and developing contacts with oil and service company members.

Ergun Kuru; Stefan Miska; Nicholas Takach; Kaveh Ashenayi; Gerald Kane; Len Volk; Mark Pickell; Evren Ozbayoglu; Barkim Demirdal; Paco Vieira; Affonso Lourenco

1999-10-15

193

Sacroiliac joint abnormalities in paraplegics  

Microsoft Academic Search

We studied 186 paraplegic patients to clarify the pathogenesis of the sacroiliac (SI) joint abnormalities reported in these patients. Partial or complete fusion of SI joints was noted in 47 patients (25%), and milder degrees of abnormalities of these joints were present in 27 patients (15%). The abnormalities differed from those seen in ankylosing spondylitis and were found more commonly

M A Khan; I Kushner; A A Freehafer

1979-01-01

194

Joint Experimentation: A Systems Approach.  

National Technical Information Service (NTIS)

The Secretary of Defense charged the United States Atlantic Command (USACOM) on I October 1998 to conduct Joint Experimentation (JE) in support of the Defense of Department (DoD) Joint Vision 2010 concept. Since a common definition of joint experimentatio...

K. T. Royar

2000-01-01

195

Double slotted socket spherical joint  

DOEpatents

A new class of spherical joints is disclosed. These spherical joints are capable of extremely large angular displacements (full cone angles in excess of 270.degree.), while exhibiting no singularities or dead spots in their range of motion. These joints can improve or simplify a wide range of mechanical devices.

Bieg, Lothar F. (Albuquerque, NM); Benavides, Gilbert L. (Albuquerque, NM)

2001-05-22

196

The Challenges of Joint Attention  

Microsoft Academic Search

This paper discusses the concept of joint at- tention and the dierent skills underlying its development. We argue that joint attention is much more than gaze following or simul- taneous looking because it implies a shared intentional relation to the world. The current state-of-the-art in robotic and computational models of the dierent prerequisites of joint attention is discussed in relation

Frederic Kaplan; Verena V. Hafner

2004-01-01

197

75 FR 55365 - Advisory Committee on Reactor Safeguards (ACRS) Meeting of the ACRS Joint Subcommittee  

Federal Register 2010, 2011, 2012, 2013

...REGULATORY COMMISSION Advisory Committee on Reactor Safeguards (ACRS) Meeting of the ACRS...Hydraulics Phenomena; Advanced Boiling Water Reactor (ABWR); and Materials, Metallurgy, and Reactor Fuels will hold a joint meeting on...

2010-09-10

198

PROCEEDINGS OF THE 1982 JOINT SYMPOSIUM ON STATIONARY COMBUSTION NOX CONTROL. VOLUME 1. UTILITY BOILER APPLICATIONS  

EPA Science Inventory

The proceedings document more than 50 papers describing recent advances in NOx control technology that were presented at the 1982 Joint Symposium on Stationary Combustion NOx Control. The papers covered the following topics: utility boiler field experience; NOx regulations; advan...

199

Information Management: The Joint Task Force's Key to Achieving Information Superiority.  

National Technical Information Service (NTIS)

Joint Vision 2010 identifies information superiority as the key enabler for decisive operations and, ultimately, full spectrum dominance. Advances in information and sensor technologies have exponentially increased the quantity of information that a JTF r...

T. Brandl

2000-01-01

200

Joint ETV/NOWATECH test plan for the Sorbisense GSW40 passive sampler  

EPA Science Inventory

The joint test plan is the implementation of a test design developed for verification of the performance of an environmental technology following the NOWATECH ETV method. The verification is a joint verification with the US EPA ETV scheme and the Advanced Monitoring Systems Cent...

201

Mechanics of mechanically fastened joints in polymer–matrix composite structures – A review  

Microsoft Academic Search

As the applications of advanced composite structural materials continue to increase, so does the need to understand the mechanical behavior of mechanically fastened joints in such structures. The most recent and relevant review article on this subject was published more than a decade ago, but it was restricted to stress analysis and strength prediction of mechanically fastened joints in fiber-reinforced

Srinivasa D. Thoppul; Joana Finegan; Ronald F. Gibson

2009-01-01

202

Development and experimental validation of a simulation model for open joint ventilated façades  

Microsoft Academic Search

The investigation of the thermal and fluid dynamical behaviour of open joint ventilated façades is a challenging task due to the complex airflows generated inside of the naturally ventilated cavity by the existence of open joints. For this reason, the use of advanced fluid measurement and simulation techniques is highly recommended. This paper focuses in the development and experimental validation

Cristina Sanjuan; María José Suárez; Eduardo Blanco; María del Rosario Heras

2011-01-01

203

Joint Space Operations Center (JSpOC) Mission System (JMS)  

NASA Astrophysics Data System (ADS)

US space capabilities benefit the economy, national security, international relationships, scientific discovery, and our quality of life. Realizing these space responsibilities is challenging not only because the space domain is increasingly congested, contested, and competitive but is further complicated by the legacy space situational awareness (SSA) systems approaching end of life and inability to provide the breadth of SSA and command and control (C2) of space forces in this challenging domain. JMS will provide the capabilities to effectively employ space forces in this challenging domain. Requirements for JMS were developed based on regular, on-going engagement with the warfighter. The use of DoD Architecture Framework (DoDAF) products facilitated requirements scoping and understanding and transferred directly to defining and documenting the requirements in the approved Capability Development Document (CDD). As part of the risk reduction efforts, the Electronic System Center (ESC) JMS System Program Office (SPO) fielded JMS Capability Package (CP) 0 which includes an initial service oriented architecture (SOA) and user defined operational picture (UDOP) along with force status, sensor management, and analysis tools. Development efforts are planned to leverage and integrate prototypes and other research projects from Defense Advanced Research Projects Agency, Air Force Research Laboratories, Space Innovation and Development Center, and Massachusetts Institute of Technology/Lincoln Laboratories. JMS provides a number of benefits to the space community: a reduction in operational “transaction time” to accomplish key activities and processes; ability to process the increased volume of metric observations from new sensors (e.g., SBSS, SST, Space Fence), as well as owner/operator ephemerides thus enhancing the high accuracy near-real-time catalog, and greater automation of SSA data sharing supporting collaboration with government, civil, commercial, and foreign entities. Continued success in JMS depends on continued support from across the space community. Key activities where community participation is essential include the C2 SSA Community of Interest (COI) development and refinement, creative strategies for faster, better, cheaper development, and defining the next set of capabilities.

Morton, M.; Roberts, T.

2011-09-01

204

(iv) Disorders of the acromioclavicular joint and distal clavicle  

Microsoft Academic Search

The acromioclavicular joint (ACJ) is a common source of pathology in patients of all age groups and lifestyles. Young patients, particularly those engaged in contact sports, often suffer injuries that result in instability of the ACJ. Advances in arthroscopic surgery and implant technology have opened new avenues for the treatment of these injuries. Despite this, in many cases, there remains

A. P. Wright; I. A. R. MacLeod; S. C. Talwalker

2011-01-01

205

Bone Morphogenetic Protein signaling in joint homeostasis and disease  

Microsoft Academic Search

Despite advances in therapies that target inflammation and tissue destruction in chronic arthritis, stimulation of tissue repair and restoration of joint function, the ultimate goal of treatment, is far from achieved. We introduce a new paradigm that may help to improve our understanding and management of chronic arthritis. The presence or absence of tissue responses distinguishes destructive arthritis, steady-state arthritis

Rik J. U. Lories; Frank P. Luyten

2005-01-01

206

Fatigue in mechanically fastened composite and metallic joints  

SciTech Connect

This book presents the papers given at a conference on the fatigue of metals and composite materials. Topics considered at the conference included advanced fastener technology for composite and metallic joints, cold working, the experimental characterization of cracks, fastener flexibility, and the enhanced stop-drill repair procedure for cracked structures.

Potter, J.M.

1985-01-01

207

Formation of tough composite joints  

SciTech Connect

Joints which exhibit tough fracture behavior were formed in a composite with a Si/SiC matrix reinforced with Textron SCS-6 fibers with either boron nitride or silicon nitride fiber coatings. In composites with BN coatings fibers were aligned uniaxially, while composites with Si{sub 3}N{sub 4}-coated fibers had a 0/90{degree} architecture. Lapped joints (joints with overlapping fingers) were necessary to obtain tough behavior. Geometrical requirements necessary to avoid brittle joint failure have been proposed. Joints with a simple overlap geometry (only a few fingers) would have to be very long in order to prevent brittle failure. Typical failure in these joints is caused by a crack propagating along the interfaces between the joint fingers. Joints of the same overall length, but with geometry changed to be symmetric about the joint centerline and with an extra shear surface exhibited tough fractures accompanied with extensive fiber pullout. The initial matrix cracking of these joints was relatively low because cracks propagated easily through the ends of the fingers. Joints with an optimized stepped sawtooth geometry produced composite-like failures with the stress/strain curves containing an elastic region followed by a region of rising stress with an increase of strain. Increasing the fiber/matrix interfacial strength from 9 to 25 MPa, by changing the fiber coating, increased matrix cracking and ultimate strength of the composite significantly. The best joints had matrix cracking stress and ultimate strength of 138 and 240 MPa, respectively. Joint failure was preceded by multiple matrix cracking in the entire composite. The high strength of the joints will permit building of structures containing joints with only a minor reduction of design stresses.

Brun, M.K. [GE Corporate Research and Development, Schenectady, NY (United States)

1997-05-01

208

Metalceramic joint assembly  

Microsoft Academic Search

A metal-ceramic joint assembly in which a brazing alloy is situated between metallic and ceramic members. The metallic member is either an aluminum-containing stainless steel, a high chromium-content ferritic stainless steel or an iron nickel alloy with a corrosion protection coating. The brazing alloy, in turn, is either an Au-based or Ni-based alloy with a brazing temperature in the range

Jian

2002-01-01

209

Charcot joint of shoulder  

Microsoft Academic Search

Neuropathic arthropathy involving the shoulder is a relatively rare chronic disorder characterized by the destruction of the\\u000a joint which is also associated with decreased sensory innervation (Lequesne et al. in Rev Rhum Mal Osteoartic 49(6):427–437,\\u000a 1982; Yan?k et al. in Rheumatol Int 24(4):238–241, 2004). Here, we report a case of neuropathic arthropathy of the shoulder (charcot shoulder), secondary to syringomyelia

Korhan Ozkan; Umut Yavuz; Budak Akman; Namik Kemal Ozkan; Levent Eralp

2008-01-01

210

Joint Venture Marketing  

Microsoft Academic Search

Joint venture marketing links a for profit organization with a non-profit organization for their mutual benefit. Since American Express launched its 1981 Statue of Liberty\\/Ellis Island campaign, the strategy has proliferated among all types of health care organizations, manufacturers and even financial and educational institutions. With the successes have come concerns about non-profits having to compromise their integrity, the elimination

Nora Ganin Barnes

1991-01-01

211

Jointly Sponsored Research Program  

Microsoft Academic Search

U.S. Department of Energy (DOE) Cooperative Agreement DE-FC26-98FT40321 funded through the Office of Fossil Energy and administered at the National Energy Technology Laboratory (NETL) supported the performance of a Jointly Sponsored Research Program (JSRP) at the Energy & Environmental Research Center (EERC) with a minimum 50% nonfederal cost share to assist industry in commercializing and effectively applying highly efficient, nonpolluting

Everett A. Sondreal; John G. Hendrikson; Thomas A. Erickson

2009-01-01

212

Joint Center for Energy Storage Research  

ScienceCinema

The Joint Center for Energy Storage Research (JCESR) is a major public-private research partnership that integrates U.S. Department of Energy national laboratories, major research universities and leading industrial companies to overcome critical scientific challenges and technical barriers, leading to the creation of breakthrough energy storage technologies. JCESR, centered at Argonne National Laboratory, outside of Chicago, consolidates decades of basic research experience that forms the foundation of innovative advanced battery technologies. The partnership has access to some of the world's leading battery researchers as well as scientific research facilities that are needed to develop energy storage materials that will revolutionize the way the United States and the world use energy.

213

38 CFR 4.45 - The joints.  

Code of Federal Regulations, 2010 CFR

...vertebrae, are considered groups of minor joints, ratable on a parity with major joints. The lumbosacral articulation and both sacroiliac joints are considered to be a group of minor joints, ratable on disturbance of lumbar spine...

2009-07-01

214

49 CFR 213.121 - Rail joints.  

Code of Federal Regulations, 2012 CFR

...Transportation 4 2012-10-01 2012-10-01 false Rail joints. 213.121 Section 213.121 Transportation...SAFETY STANDARDS Track Structure § 213.121 Rail joints. (a) Each rail joint, insulated joint, and compromise...

2012-10-01

215

49 CFR 213.121 - Rail joints.  

Code of Federal Regulations, 2011 CFR

...Transportation 4 2011-10-01 2011-10-01 false Rail joints. 213.121 Section 213.121 Transportation...SAFETY STANDARDS Track Structure § 213.121 Rail joints. (a) Each rail joint, insulated joint, and compromise...

2011-10-01

216

Metacarpophalangeal joint arthritis.  

PubMed

Arthritis of the metacarpophalangeal joint can result in considerable disability and pain. Inflammatory, posttraumatic, crystalline, and osteoarthritis are common etiologies of joint disease. A variety of nonsurgical treatment options have been shown to be effective, including activity modification, anti-inflammatory medications, splinting, and cortisone injections. In addition, newer generation disease-modifying antirheumatic drugs geared toward the treatment of rheumatoid arthritis have shown promise in retarding the inflammatory process. Another, relatively newer, conservative treatment option includes topical anti-inflammatories such as diclofenac sodium that are now approved by the Federal Drug Administration. Surgical treatment options most commonly include arthroplasty and arthrodesis. In the treatment of thumb metacarpophalangeal arthritis, arthrodesis is a popular and generally reliable surgical solution. In the fingers, arthroplasty remains the most common treatment option. Traditional constrained silicone joint replacements remain the most commonly used. Newer generation, unconstrained, surface replacement arthroplasties have shown promise in the treatment of osteoarthritis and select cases of inflammatory arthritis in which there is good bone stock, no or minimal deformity, adequate supporting soft tissues, and good disease control. PMID:21276901

Rizzo, Marco

2011-02-01

217

Dynamic glenohumeral joint stability.  

PubMed

Stability of the glenohumeral joint with an anterior, posterior, and inferior displacement force of 50 N was measured in a dynamic shoulder model. Controlled hydrodynamic actuator forces were applied to the deltoid muscle and to the rotator cuff in seven anatomic specimens. During elevation of the arm the position of the humerus was measured with a six-degree-of-freedom ultrasonic sensor device. The rotational center of the humeral head was used as a reference point for translation. A displacement force of 50 N led to significant humeral head displacement anteriorly and posteriorly but not inferiorly. A 50% reduction of rotator cuff forces increased anterior displacement by 46% and posterior displacement by 31%. Venting of the glenohumeral joint space and of the subacromial bursa resulted in a 50% increase of anterior displacement, a 19% increase of posterior displacement, and significant inferior displacement. This study demonstrates that in addition to passive stabilizers and negative intraarticular pressure, rotator cuff force significantly contributes to stabilization of the glenohumeral joint during arm motion. Muscle strength and coordination should gain more emphasis in the diagnosis and treatment of shoulder instability. PMID:9524340

Wuelker, N; Korell, M; Thren, K

218

Laboratory characterization of rock joints  

SciTech Connect

A laboratory characterization of the Apache Leap tuff joints under cyclic pseudostatic and dynamic loads has been undertaken to obtain a better understanding of dynamic joint shear behavior and to generate a complete data set that can be used for validation of existing rock-joint models. Study has indicated that available methods for determining joint roughness coefficient (JRC) significantly underestimate the roughness coefficient of the Apache Leap tuff joints, that will lead to an underestimation of the joint shear strength. The results of the direct shear tests have indicated that both under cyclic pseudostatic and dynamic loadings the joint resistance upon reverse shearing is smaller than that of forward shearing and the joint dilation resulting from forward shearing recovers during reverse shearing. Within the range of variation of shearing velocity used in these tests, the shearing velocity effect on rock-joint behavior seems to be minor, and no noticeable effect on the peak joint shear strength and the joint shear strength for the reverse shearing is observed.

Hsiung, S.M.; Kana, D.D.; Ahola, M.P.; Chowdhury, A.H.; Ghosh, A. [Southwest Research Inst., San Antonio, TX (United States). Center for Nuclear Waste Regulatory Analyses

1994-05-01

219

Joint slip in steel electric transmission towers  

Microsoft Academic Search

Joint slip is the relative displacement of a bolted joint under shear. It is greater in transmission towers as bolt diameters are small, members joined are thin, bearing type joints with a lower clamping force are used, and coefficient of friction of galvanized faying surfaces is low. This study on behaviour of such joints, incorporated 36 joint tests, generated joint

N Ungkurapinan; S. R. De S Chandrakeerthy; R. K. N. D Rajapakse; S. B Yue

2003-01-01

220

Advanced information society(5)  

NASA Astrophysics Data System (ADS)

Based on the advancement of information network technology information communication forms informationalized society giving significant impact on business activities and life style in it. The information network has been backed up technologically by development of computer technology and has got great contribution by enhanced computer technology and communication equipments. Information is transferred by digital and analog methods. Technical development which has brought out multifunctioned modems of communication equipments in analog mode, and construction of advanced information communication network which has come out by joint work of computer and communication under digital technique, are described. The trend in institutional matter and standardization of electrical communication is also described showing some examples of value-added network (VAN).

Tanizawa, Ippei

221

SAPHO syndrome - rare case of joint damage treated by knee synovectomy and total hip joint replacement.  

PubMed

This report describes the case of a young male who had been followed-up between the ages of 14-21 years at different health facilities for symptoms initially considered to be caused by tumor, then by chronic osteomyelitis or ankylosing spondylitis and finally diagnosed as the SAPHO syndrome. Musculoskeletal symptoms of the SAPHO syndrome include focal, probably aseptic chronic osteomyelitis, synovitis and formation of hyperostoses. Therapy of the SAPHO syndrome is predominantly conservative. However, in this case we had to employ arthroscopic synovectomy first, for severe synovitis resistant to any conservative therapy approach. Later, left total hip replacement has been performed for advanced hip joint damage accompanied by intense pain and significant range of motion reduction. At the present time, the patient is 51/2 years after synovectomy of the knee and 5 years after the hip joint replacement. The knee joint is without effusion or functional limitations, with intermittent pains only. The hip prosthesis in the risk area is fully integrated without signs of component loosening, with very good functional outcome. While synovectomy can be obviously fully recommended in cases like this, the total joint replacement should be considered unique and indicated only rarely after careful consideration of all circumstances.We consider this approach absolutely exceptional also because we have not found reference to similar case in any national or international professional literature available. PMID:18601821

Vavrík, P; Jarosová, K; Popelka, S; Bek, J

2008-06-01

222

Joint hypermobility syndrome.  

PubMed

Although perceived as a rare condition, joint hypermobility syndrome is common. Its prevalence in rheumatology clinics is extremely high. Early estimates suggest that it may be the most common of all rheumatologic conditions. The problem lies in the general lack of awareness of the syndrome, its means of recognition, and the resultant failure to diagnose it correctly when present. It is a worldwide problem. This article provides an overview of hypermobility and hypermobility syndrome, stressing its multisystemic nature and the negative impact that it may have on quality of life, with particular reference to gastrointestinal involvement. PMID:23597972

Fikree, Asma; Aziz, Qasim; Grahame, Rodney

2013-05-01

223

On representations for joint moments using a joint coordinate system.  

PubMed

In studies of the biomechanics of joints, the representation of moments using the joint coordinate system has been discussed by several authors. The primary purpose of this technical brief is to emphasize that there are two distinct, albeit related, representations for moment vectors using the joint coordinate system. These distinct representations are illuminated by exploring connections between the Euler and dual Euler bases, the "nonorthogonal projections" presented in a recent paper by Desroches et al. (2010, "Expression of Joint Moment in the Joint Coordinate System," ASME J. Biomech. Eng., 132(11), p. 11450) and seminal works by Grood and Suntay (Grood and Suntay, 1983, "A Joint Coordinate System for the Clinical Description of Three-Dimensional Motions: Application to the Knee," ASME J. Biomech. Eng., 105(2), pp. 136-144) and Fujie et al. (1996, "Forces and Moment in Six-DOF at the Human Knee Joint: Mathematical Description for Control," Journal of Biomechanics, 29(12), pp. 1577-1585) on the knee joint. It is also shown how the representation using the dual Euler basis leads to straightforward definition of joint stiffnesses. PMID:24008987

O'Reilly, Oliver M; Sena, Mark P; Feeley, Brian T; Lotz, Jeffrey C

2013-11-01

224

Metal to ceramic sealed joint  

DOEpatents

A metal to ceramic sealed joint which can withstand wide variations in temperature and maintain a good seal is provided for use in a device adapted to withstand thermal cycling from about 20 to about 1000 degrees C. The sealed joint includes a metal member, a ceramic member having an end portion, and an active metal braze forming a joint to seal the metal member to the ceramic member. The joint is positioned remote from the end portion of the ceramic member to avoid stresses at the ends or edges of the ceramic member. The sealed joint is particularly suited for use to form sealed metal to ceramic joints in a thermoelectric generator such as a sodium heat engine where a solid ceramic electrolyte is joined to metal parts in the system. 11 figures.

Lasecki, J.V.; Novak, R.F.; McBride, J.R.

1991-08-27

225

DOE-EERC jointly sponsored research program  

SciTech Connect

U.S. Department of Energy (DOE) Cooperative Agreement DE-FC21-93MC30098 funded through the Office of Fossil Energy and administered at the Federal Energy Technology Center (FETC) supported the performance of a Jointly Sponsored Research Program (JSRP) at the Energy and Environmental Research Center (EERC) with a minimum 50% nonfederal cost share to assist industry in commercializing and effectively applying efficient, nonpolluting energy technologies that can compete effectively in meeting market demands for clean fuels, chemical feedstocks, and electricity in the 21st century. The objective of the JSRP was to advance the deployment of advanced technologies for improving energy efficiency and environmental performance through jointly sponsored research on topics that would not be adequately addressed by the private sector alone. Examples of such topics include the barriers to hot-gas cleaning impeding the deployment of high-efficiency power systems and the search for practical means for sequestering CO{sub 2} generated by fossil fuel combustion. The selection of particular research projects was guided by a combination of DOE priorities and market needs, as provided by the requirement for joint venture funding approved both by DOE and the private sector sponsor. The research addressed many different energy resource and related environmental problems, with emphasis directed toward the EERC's historic lead mission in low-rank coals (LRCs), which represent approximately half of the U.S. coal resources in the conterminous states, much larger potential resources in Alaska, and a major part of the energy base in the former U.S.S.R., East Central Europe, and the Pacific Rim. The Base and JSRP agreements were tailored to the growing awareness of critical environmental issues, including water supply and quality, air toxics (e.g., mercury), fine respirable particulate matter (PM{sub 2.5}), and the goal of zero net CO{sub 2} emissions.

Hendrikson, J.G.; Sondreal, E.A.

1999-09-01

226

Advanced Accessory Power Supply Topologies  

Microsoft Academic Search

This Cooperative Research and Development Agreement (CRADA) began December 8, 2000;\\u000aand ended September 30, 2009. The total funding provided by the Participant (General Motors;\\u000aAdvanced Technology Vehicles [GM]) during the course of the CRADA totaled $1.2M enabling;\\u000athe Contractor (UT-Battelle, LLC [Oak Ridge National Laboratory, a.k.a. ORNL]) to contribute;\\u000asignificantly to the joint project. The initial task was to

Marlino

2010-01-01

227

Lubrication and wear of ultra-high molecular weight polyethylene in total joint replacements  

Microsoft Academic Search

This paper reviews recent advances in the tribology of artificial joints. Emphasis is placed on the latest developments in understanding wear mechanisms and in wear testing of ultra-high molecular weight polyethylene (UHMWPE) materials and components. Two major advances have been made. One is the discovery and recognition of the importance of multidirectional motion in wear mechanisms and wear testing of

A Wang; A Essner; V. K Polineni; C Stark; J. H Dumbleton

1998-01-01

228

CRUCIFORM CONTROL ROD JOINT  

DOEpatents

An invention is described which relates to nuclear reactor control rod components and more particularly to a joint between cruciform control rod members and cruciform control rod follower members. In one embodiment this invention provides interfitting crossed arms at adjacent ends of a control rod and its follower in abutting relation. This holds the members against relative opposite longitudinal movement while a compression member keys the arms against relative opposite rotation around a common axis. Means are also provided for centering the control rod and its follower on a common axis and for selectively releasing the control rod from its follower for the insertion of a replacement of the control rod and reuse of the follower. (AEC)

Thorp, A.G. II

1962-08-01

229

Smart material joint band  

NASA Astrophysics Data System (ADS)

The present invention relates to an improved connector for joining two tubular members together. The connector is formed by a plurality of longitudinally extending fingers extending from an end of one of the tubular members and at least one locking groove in the other of the tubular members for receiving the fingers. The connector further includes a circumferentially extending wire member which is received in a notch in a head portion of each of the plurality of fingers. The wire member is preferably formed from a shape memory alloy and has an original circumference less than the circumference of a circle formed by the notches in the head portions of the fingers. The connector includes apertures through which electric wires may be connected to the shape memory alloy ring member so as to cause the shape memory alloy ring member to return to its original shape and allow release of the joint connection.

Tucchio, Michael A.; Stoodt, Robert A.; Livsey, Robert A.

1993-12-01

230

Joint Targeting Planning Training Guide.  

National Technical Information Service (NTIS)

This guide resulted from an effort to develop a new approach to assessment and diagnostic training feedback in joint training. The guide resulted from a front-end analysis of joint targeting for an air campaign planning simulation. The analysis generated ...

J. F. Love

1998-01-01

231

Managing International Joint Venture Relationships  

Microsoft Academic Search

The purpose of the study is to describe and analyze the formation and development of international joint venture processes and relationships between the partners over time. Moreover, the study analyzes how far foreign partners have been successful in developing new contacts and in expanding their activities in local markets. We have carried out two case studies on joint ventures between

Akmal S. Hyder; Pervez N. Ghauri

2000-01-01

232

Articulated Joint for Deployable Structures.  

National Technical Information Service (NTIS)

A joint is described for connecting a pair of beams to pivot them between positions in alignment or beside one another, which is of light weight and which operates in a controlled manner. The joint includes a pair of fittings and at least one center link ...

N. D. Craighead R. J. Preliasco T. D. Hult

1983-01-01

233

International retail joint venture learning  

Microsoft Academic Search

Where retail entry mode decision-making is examined in the literature, it has almost exclusively focused upon international store acquisitions and franchising growth and expansion. In contrast, international joint venture decision-making processes are visibly absent in the international retail literature. This article explores three retail multinationals' international retail joint venturing experiences, extracting some of the salient lessons learned at each stage

Mark Palmer

2006-01-01

234

Industrial robots with seven joints  

Microsoft Academic Search

In a physical 3-dimensional free space at most six degrees of freedom can be independent, i.e. three for position and three for orientation. Intuitively robots with six joints are adequate to execute any tasks. However, in reality, constraints often exist under the complex environment so that six joints are not quite enough for the robots. An insertion of an additional

J. Y. S. Luh; Y. L. Gu

1985-01-01

235

High pressure tubular swivel joint  

Microsoft Academic Search

A swivel joint and connection for abutting high pressure hydraulic manifolds are described. The joint consists of 2 flanged nonrotating swivel bodies, with one of the nonrotating swivel bodies having a rotating swivel body journaled in it. A flanged tubular sleeve is secured between the adjacent end faces of the 2 nonrotating swivel bodies. A static annular seal is disposed

Kendrick

1976-01-01

236

High pressure tubular swivel joint  

Microsoft Academic Search

A swivel joint and connection for abutting high pressure hydraulic manifolding are described. The joint consists of 2 flanged nonrotating swivel bodies, with one of the nonrotating swivel bodies having a rotating swivel body journaled in it. A flanged tubular sleeve is secured between the adjacent end faces of the 2 nonrotating swivel bodies, with the opposite ends of the

W. D. Kendrick; B. J. Frazier

1976-01-01

237

Release of cartilage oligomeric matrix protein (COMP) into joint fluid after knee injury and in osteoarthritis.  

PubMed Central

OBJECTIVE--The release of fragments of cartilage oligomeric matrix protein (COMP) and aggrecan into knee joint fluid and serum after joint injury and in post-traumatic and primary osteoarthritis was monitored in a cross-sectional study. METHODS--Samples of joint fluid and serum were obtained from healthy volunteers and from patients with arthroscopically verified injury to anterior cruciate ligament and or meniscus of the knee at different times after injury and with different degrees of post-traumatic osteoarthritis. Samples were also obtained from patients with primary osteoarthritis. Fragments of COMP were quantified in joint fluid and in serum by enzyme-linked immunoassay. Fragments of aggrecan were quantified in joint fluid by enzyme-linked immunoassay. RESULTS--Concentrations of COMP and aggrecan fragments in joint fluid in the study groups were increased over the reference levels of 47 (range 10-109) and 34 (range 6-59) micrograms/mL, respectively, in the volunteers with healthy knees. The ratios (w/w) of aggrecan to COMP fragments in joint fluid were also increased in all study groups over that in the reference group. Average concentrations of COMP in joint fluid were high shortly after injury and decreased with time but remained increased over reference levels for many years. Joint fluid COMP concentrations were also increased in early stage post-traumatic and primary osteoarthritis, but not in advanced osteoarthritis. CONCLUSION--Increased amounts of aggrecan and COMP fragments are released into joint fluid after joint injury and in early stage osteoarthritis. The ratios of aggrecan to COMP in joint fluid vary with time after injury and with osteoarthritis disease stage. Although both molecules are sensitive to the agents active in matrix breakdown in joint disease, differences may thus exist in the release mechanisms and attempted repair. The concentrations of the individual markers in body fluids and their ratios may serve to monitor treatment efficacy, disease progression and repair in osteoarthritis and other joint diseases. Images

Lohmander, L S; Saxne, T; Heinegard, D K

1994-01-01

238

Joint services electronics program  

NASA Astrophysics Data System (ADS)

The transfer of the compact range and target identification technology initiated under JSEP support for time domain studies continues to make large advances. Using other sources of support, design for a mini-chamber has now been generated and has been constructed. This range is designed to study smaller targets at higher frequencies. The research has proven to be of intense interest to DoD and the aerospace industry and our compact range consortium represents a major cross section of the aerospace and electronic industries, including additional major support from several DoD agencies. In fact, the total support in these experimental studies substantially exceeds our JSEP support. This research is truly guiding a major portion of this technology in the USA and has been extremely important for stealth technology advances.

Peters, Leon, Jr.

1990-11-01

239

Joint Tactics, Techniques, and Procedures for Joint Logistics Over the Shore.  

National Technical Information Service (NTIS)

1. Purpose. This publication sets forth joint doctrine and joint tactics, techniques, and procedures for conducting Joint Logistics Over The Shore (JLOTS) operations by the US Military Services during the conduct of joint operations. It provides basic doc...

1991-01-01

240

Biochemical markers of ongoing joint damage in rheumatoid arthritis - current and future applications, limitations and opportunities  

PubMed Central

Rheumatoid arthritis (RA) is a chronic systemic autoimmune disease associated with potentially debilitating joint inflammation, as well as altered skeletal bone metabolism and co-morbid conditions. Early diagnosis and aggressive treatment to control disease activity offers the highest likelihood of preserving function and preventing disability. Joint inflammation is characterized by synovitis, osteitis, and/or peri-articular osteopenia, often accompanied by development of subchondral bone erosions, as well as progressive joint space narrowing. Biochemical markers of joint cartilage and bone degradation may enable timely detection and assessment of ongoing joint damage, and their use in facilitating treatment strategies is under investigation. Early detection of joint damage may be assisted by the characterization of biochemical markers that identify patients whose joint damage is progressing rapidly and who are thus most in need of aggressive treatment, and that, alone or in combination, identify those individuals who are likely to respond best to a potential treatment, both in terms of limiting joint damage and relieving symptoms. The aims of this review are to describe currently available biochemical markers of joint metabolism in relation to the pathobiology of joint damage and systemic bone loss in RA; to assess the limitations of, and need for additional, novel biochemical markers in RA and other rheumatic diseases, and the strategies used for assay development; and to examine the feasibility of advancement of personalized health care using biochemical markers to select therapeutic agents to which a patient is most likely to respond.

2011-01-01

241

Provocative sacroiliac joint maneuvers and sacroiliac joint block are unreliable for diagnosing sacroiliac joint pain  

Microsoft Academic Search

Mapping studies of pain elicited by injections into the sacroiliac joints (SIJs) suggest that sacroiliac joint syndrome (SIJS) may manifest as low back pain, sciatica, or trochanteric pain. Neither patient-reported symptoms nor provocative SIJ maneuvers are sensitive or specific for SIJS when SIJ block is used as the diagnostic gold standard. This has led to increasing diagnostic use of SIJ

Jean-Marie Berthelot; Jean-Jacques Labat; Benoît Le Goff; François Gouin; Yves Maugars

2006-01-01

242

Applications Of The Universal Joint Task List To Joint Exercise Results  

Microsoft Academic Search

The foundation of readiness is training. The Chairman, Joint Chiefs of Staff (CJCS) Joint Training Program institutes methods for identifying training requirements through review of the Commander-in-Chief's (CINC) missions and the compilation of Joint Mission Essential Task Lists. The Universal Joint Task List comprehensively outlines these joint essential tasks, providing a summary of CINC missions, joint tasks, and corresponding supporting

Sam H. Parry; Michael C. McAneny; Richard J. Dromerhauser

1997-01-01

243

Applications of the universal joint task list to joint exercise results  

Microsoft Academic Search

The foundation of readiness is training. The Chairman, Joint Chiefs of Staff (CJCS) Joint Training Program institutes methods for identifying training requirements through review of the Commander-in-Chief's (CINC) missions and the compilation of Joint Mission Essential Task Lists. The Universal Joint Task List comprehen- sively outlines these joint essential tasks, providing a summary of CINC missions, joint tasks, and corre-

Sam H. Parry; Michael C. McAneny; Richard J. Dromerhauser

1997-01-01

244

Bioengineering Advances and Cutting-edge Technology  

Microsoft Academic Search

There is a forty-year history of research collaboration by doctors at Tokyo Women’s Medical University and engineers at Waseda\\u000a University. The synergism culminated in 2008 with the establishment of the Center for Advanced Biomedical Sciences within\\u000a the framework of the Tokyo Women’s Medical University-Waseda University Joint Institution for Advanced Biomedical Sciences\\u000a (TWIns). The center provides a singular environment for consolidating

M. Umezu

245

Regenerative Medicine and Restoration of Joint Function.  

National Technical Information Service (NTIS)

Currently amputation, arthrodesis (joint fusion), or joint replacement are used to treat a joint with an intra-articular fracture or destroyed by a combat injury. Generation of personalized, anatomically shaped biological implants formed using techniques ...

E. Toyserkani M. Hurtig P. Zalzal R. Kandel R. Pilliar

2012-01-01

246

Evaluation of Joint Sealants of Concrete Pavements.  

National Technical Information Service (NTIS)

This report document investigation of concrete pavement joint sealants which began with project 1371 'Evaluation of Joint Sealants.' The purpose of the continued investigation is to propose specification and test protocol for joint sealants in concrete pa...

A. H. Gurjar T. Tang D. G. Zollinger

1997-01-01

247

Standing Joint Force Headquarters: A Planning Multiplier.  

National Technical Information Service (NTIS)

The Standing Joint Force Headquarters (SJFHQ) provides a planning multiplier by bringing both joint and regional expertise to the Joint Task Force Headquarters (JTFHQ), thereby increasing its capabilities. These capabilities assist in the rapid establishm...

C. A. Barkley

2006-01-01

248

Language of Conflict: How a Combined/Joint Force Commander can Overcome Military Linguist Shortages to Enhance Information Operations.  

National Technical Information Service (NTIS)

This paper examines how a combined or joint force commander can continue to shape Information Operations despite a shortage of military linguists. As advances in Information Operations grow throughout the world, so does the need for qualified and competen...

M. D. Beeson

2002-01-01

249

Fatigue in mechanically fastened composite and metallic joints; Proceedings of the Symposium, Charleston, SC, Mar. 18, 19, 1985  

Microsoft Academic Search

The present conference considers advanced fastener technology for composite and metallic joints, a fatigue life-enhancing and high interference bushing installation employing the 'ForceMate' technique, fatigue life improvement by cold working fastener holes in 7050 aluminum alloy, the fatigue strength of bolted and adhesively bonded structural steel joints, and the effect of load transfer on the fatigue of mechanically fastened metallic

1986-01-01

250

Genomic Advances to Improve Biomass for Biofuels  

ScienceCinema

Lawrence Berkeley National Lab bioscientist Daniel Rokhsar discusses genomic advances to improve biomass for biofuels. He presented his talk Feb. 11, 2008 in Berkeley, California as part of Berkeley Lab's community lecture series. Rokhsar works with the U.S. Department of Energy's Joint Genome Institute and Berkeley Lab's Genomics Division. His talk was presented February 11, 2008.

251

Advances in welding science - a perspective.  

National Technical Information Service (NTIS)

The ultimate goal of welding technology is to improve the joint integrity and increase productivity. Over the years, welding has been more of an art than a science, but in the last few decades major advances have taken place in welding science and technol...

S. A. David J. M. Vitek S. S. Babu T. DebRoy

1995-01-01

252

Joint Center for Political and Economic Studies  

NSDL National Science Digital Library

Founded in 1970, the Joint Center for Political and Economic Studies is a national, nonprofit research and public policy institution that performs research and outreach activities on public policy issues that are of concern to African Americans and other communities of color. The areas that are of prime interest to the Center include economic advancement, political participation, and international affairs. The homepage for the site offers some highlights of recent releases from the Center (such as audiocasts and new reports) and information on job openings and internships at the Center. The navigation bar on the left-hand side of the homepage is useful as well, as users will be directed to helpful publications and the organization's very useful databank. The databank also features thematic fact sheets on topics ranging from children living in poverty to the "digital divide".

253

Joint motion clusters in servomanipulator operation  

SciTech Connect

The Consolidated Fuel Reprocessing Program (CFRP) at the Oak Ridge National Laboratory is developing advanced teleoperator systems for maintenance of future nuclear fuel reprocessing facilities. Remote maintenance systems developed by the CFRP emphasize man-in-the-loop teleoperation. This paper reports the results of a recent experiment which investigated how users interact with a multi-degree-of-freedom servomanipulator. Principal components analysis performed on data collected during completion of typical remote maintenance tests indicates that joint motions may be summarized by two orthogonal clusters, one which represents fine-adjusting motions and one which represents slewing motions. Implications of these findings for servomanipulator design are discussed. 5 refs., 1 fig., 2 tabs.

Draper, J.V.; Sundstrom, E.; Herndon, J.N.

1986-01-01

254

Joint SSRTNet/ALS-MES Workshop report  

SciTech Connect

This joint workshop brought together experimentalists and theorists interested in synchrotron radiation and highlighted subjects relevant to molecular environmental science (MES). The strong mutual interest between the participants resulted in joint sessions on the first day, followed by more specialized parallel sessions on the second day. Held in conjunction with the Advanced Light Source (ALS) Users' Association Annual Meeting at the Lawrence Berkeley National Laboratory (Berkeley Lab), the Synchrotron Radiation Research Theory Network (SRRTNet) workshop was co-organized by Michel Van Hove (Berkeley Lab and University of California, Davis) and Andrew Canning (Berkeley Lab), while David Shuh (Berkeley Lab) organized the ALS-MES workshop. SRRTNet is a global network that promotes the interaction of theory and experiment (http://www.cse.clrc.ac.uk/Activity/SRRTnet). The ALS-MES project is constructing Beamline 11.0.2.1-2, a new soft x-ray beamline for MES investigations at photon energies from 75 eV to 2 keV, to provide photons for wet spectroscopy end stations and an upgraded scanning transmission x-ray microscope (STXM). The ALS-MES beamline and end stations will be available for users in the late fall of 2002.

Shuh, David; Van Hove, Michel

2001-11-30

255

Soldering of mild steels: functional joints  

SciTech Connect

In recent years, adhesive joints have replaced numerous soldered joints, especially in applications where electrical conductivity is not required from the members of the joint. Nevertheless, soldered joints are still used in applications ranging from electronics to high-technology components. The present work seeks to demonstrate that soldered joints, which can be considered as functional joints, have very good mechanical properties and can provide more than acceptable levels of leak tightness. Hence, microstructural characterisation studies have been carried out on the filler metals used to solder mild steel, the surface preparation required to achieve the best final properties has been assessed, the joints characterised by means of radiography and the mechanical properties of the joints determined. The results obtained for soldered joints have been compared with those obtained from adhesive and hybrid joints. Finally, scanning electron microscopy has been performed on the fracture surfaces of the soldered joint.

Molleda, F.; Mora, J.; Molleda, F.J.; Carillo, E.; Mellor, B.G

2003-12-15

256

Advanced cryogenic tank development status  

NASA Astrophysics Data System (ADS)

Significant advances have been made in the development of materials, structures, and manufacturing technologies for the next generation of cryogenic propellant tanks under the auspices of a joint U.S. Air Force/NASA sponsored advanced development program. This paper summarizes the achievements of this three-year program, particularly in the evolution and properties of Weldalite 049, net shape component technology, Al-Li welding technology, and efficient manufacturing concepts. Results of a recent mechanical property characterization of a full-scale integrally stiffened barrel panel extrusion are presented, as well as plans for an additional weld process optimization program using response surface design of experiment techniques. A further discussion is given to the status of hardware completed for the Advanced Manufacturing Development Center and Martin Marietta's commitment to the integration of these technologies into the production of low-cost, light-weight cryogenic propellant tanks.

Braun, G. F.; Tack, W. T.; Scholz, E. F.

1993-06-01

257

Lumbar Zygapophysial (Facet) Joint Injections  

MedlinePLUS

... arthritis) in the facet joints may contribute to low back pain and may be visualized on diagnostic imaging. However, ... sometimes called “block”) may be performed. If the low back pain pain is reduced or relieved after an anesthetic ...

258

Joint Service Family Support Network.  

National Technical Information Service (NTIS)

The Joint Service Family Support Network is an Office of the Secretary of Defense pilot program in the Pacific Region, working in concert with civilian agencies, intended to establish a comprehensive multi-agency approach for community support and service...

J. Chambers

2007-01-01

259

Joint Infection (Beyond the Basics)  

MedlinePLUS

... The Basics) Patient information: Septic arthritis (The Basics) Pseudomonas aeruginosa skin, soft tissue, and bone infections Septic arthritis ... Clinical manifestations and diagnosis of prosthetic joint infections Pseudomonas aeruginosa skin, soft tissue, and bone infections Septic arthritis ...

260

Joint Measurement Operations Controller (JMOC).  

National Technical Information Service (NTIS)

The increasingly complex interactions of systems of systems for training today's military means that supporting joint training exercises includes supporting live, virtual and constructive simulations. Capturing and integrating observer-based measures with...

B. Schaab J. Ayers J. Feeney M. Puglisi W. Salter

2011-01-01

261

ADVANCED CUTTINGS TRANSPORT STUDY  

SciTech Connect

This is the second quarterly progress report for Year 2 of the ACTS project. It includes a review of progress made in Flow Loop development and research during the period of time between Oct 1, 2000 and December 31, 2000. This report presents a review of progress on the following specific tasks: (a) Design and development of an Advanced Cuttings Transport Facility (Task 2: Addition of a foam generation and breaker system), (b) Research project (Task 6): ''Study of Cuttings Transport with Foam Under LPAT Conditions (Joint Project with TUDRP)'', (c) Research project (Task 7): ''Study of Cuttings Transport with Aerated Muds Under LPAT Conditions (Joint Project with TUDRP)'', (d) Research project (Task 8): ''Study of Flow of Synthetic Drilling Fluids Under Elevated Pressure and Temperature Conditions'', (e) Research project (Task 9): ''Study of Foam Flow Behavior Under EPET Conditions'', (f) Research project (Task 10): ''Study of Cuttings Transport with Aerated Mud Under Elevated Pressure and Temperature Conditions'', (g) Research on instrumentation tasks to measure: Cuttings concentration and distribution in a flowing slurry (Task 11), and Foam properties while transporting cuttings. (Task 12), (h) Development of a Safety program for the ACTS Flow Loop. Progress on a comprehensive safety review of all flow-loop components and operational procedures. (Task 1S). (i) Activities towards technology transfer and developing contacts with Petroleum and service company members, and increasing the number of JIP members. The tasks Completed During This Quarter are Task 7 and Task 8.

Troy Reed; Stefan Miska; Nicholas Takach; Kaveh Ashenayi; Gerald Kane; Mark Pickell; Len Volk; Mike Volk; Barkim Demirdal; Affonso Lourenco; Evren Ozbayoglu; Paco Vieira; Lei Zhou

2000-01-30

262

ADVANCED CUTTINGS TRANSPORT STUDY  

SciTech Connect

This is the first quarterly progress report for Year 2 of the ACTS project. It includes a review of progress made in Flow Loop development and research during the period of time between July 14, 2000 and September 30, 2000. This report presents information on the following specific tasks: (a) Progress in Advanced Cuttings Transport Facility design and development (Task 2), (b) Progress on research project (Task 8): ''Study of Flow of Synthetic Drilling Fluids Under Elevated Pressure and Temperature Conditions'', (c) Progress on research project (Task 6): ''Study of Cuttings Transport with Foam Under LPAT Conditions (Joint Project with TUDRP)'', (d) Progress on research project (Task 7): ''Study of Cuttings Transport with Aerated Muds Under LPAT Conditions (Joint Project with TUDRP)'', (e) Progress on research project (Task 9): ''Study of Foam Flow Behavior Under EPET Conditions'', (f) Initiate research on project (Task 10): ''Study of Cuttings Transport with Aerated Mud Under Elevated Pressure and Temperature Conditions'', (g) Progress on instrumentation tasks to measure: Cuttings concentration and distribution (Tasks 11), and Foam properties (Task 12), (h) Initiate a comprehensive safety review of all flow-loop components and operational procedures. Since the previous Task 1 has been completed, we will now designate this new task as: (Task 1S). (i) Activities towards technology transfer and developing contacts with Petroleum and service company members, and increasing the number of JIP members.

Troy Reed; Stefan Miska; Nicholas Takach; Kaveh Ashenayi; Gerald Kane; Mark Pickell; Len Volk; Mike Volk; Barkim Demirdal; Affonso Lourenco; Evren Ozbayoglu; Paco Vieira

2000-10-30

263

Joint probabilities and quantum cognition  

NASA Astrophysics Data System (ADS)

In this paper we discuss the existence of joint probability distributions for quantumlike response computations in the brain. We do so by focusing on a contextual neural-oscillator model shown to reproduce the main features of behavioral stimulus-response theory. We then exhibit a simple example of contextual random variables not having a joint probability distribution, and describe how such variables can be obtained from neural oscillators, but not from a quantum observable algebra.

de Barros, J. Acacio

2012-12-01

264

Joint probabilities and quantum cognition  

SciTech Connect

In this paper we discuss the existence of joint probability distributions for quantumlike response computations in the brain. We do so by focusing on a contextual neural-oscillator model shown to reproduce the main features of behavioral stimulus-response theory. We then exhibit a simple example of contextual random variables not having a joint probability distribution, and describe how such variables can be obtained from neural oscillators, but not from a quantum observable algebra.

Acacio de Barros, J. [Liberal Studies, 1600 Holloway Ave., San Francisco State University, San Francisco, CA 94132 (United States)

2012-12-18

265

Advanced Induction Motor Endring Design Features for High Speed Applications  

Microsoft Academic Search

This paper presents advancements in induction motor endring design to overcome mechanical limitations and extend the operating speed range and joint reliability of induction machines. A novel endring design met the challenging mechanical requirements of this high speed, high temperature, power dense application, without compromising electrical performance. Analysis is presented of the advanced endring design features including a non uniform

Matthew Caprio; Vasileios Lelos; John Herbst; Jim Upshaw

2005-01-01

266

Advanced Composition  

ERIC Educational Resources Information Center

|This is an excerpt from a course for advanced students, designed to teach proficiency in English composition by providing activities specifically geared to the elimination of native language interference. (LG)|

Sarantos, R. L.

1974-01-01

267

Advance Directives  

Cancer.gov

A fact sheet about advance directives, which are legal documents that allow people to communicate their decisions about medical care to family, friends, and health care professionals in the event that they are unable to make those decisions themselves.

268

Rate-dependent properties of Sn-Ag-Cu based lead free solder joints  

Microsoft Academic Search

The increasing demand for portable electronics has led to the shrinking in size of electronic components and solder joint dimensions. The industry also made a transition towards the adoption of lead-free solder alloys, commonly based around the Sn-Ag-Cu alloys. As knowledge of the processes and operational reliability of these lead-free solder joints (used especially in advanced packages) is limited, it

Yong'An Su; Long Bin Tan; V. B. C. Tan; Tong Yan Tee

2009-01-01

269

Autophagy and cartilage homeostasis mechanisms in joint health, aging and OA  

Microsoft Academic Search

Osteoarthritis (OA) is the most prevalent joint disease, but neither preventive measures nor disease-modifying drugs are available and a continuing need exists for safe and effective symptom-modifying therapies. Clinical trials of candidate disease-modifying OA drugs in patients with established or advanced disease have not demonstrated their efficacy, but these failed trials have motivated investigation into the mechanisms that maintain joint

Beatriz Caramés; Martin K. Lotz

2011-01-01

270

Generating Gaits for Biped Robots Using Multiple Dynamic Passivization of Joint Control  

NASA Astrophysics Data System (ADS)

In the research field of bipedal locomotion, a central pattern generator (CPG) and passive dynamic walking (PDW) have attracted much attention. In this paper, we describe a motion control system for biped robots based on dynamic joint passivization. Our motion control system is based on a mixture of the CPG and PDW, that is, the multiple dynamic passivization of joint control (MDPJC). Our intention is to make the joint control of the swing leg temporarily passive in the swing leg phase. The important part is the passive phase time and the switch timings of the joint control. We optimize the switch timing parameters using simulated annealing with advanced adaptive neighborhood (SA/AAN). Experiments using the motion control system based on multiple dynamic passivization of joint control successfully generated energy efficient walking and enabled superior gaits.

Ishida, Minoru; Kato, Shohei; Kanoh, Masayoshi; Itoh, Hidenori

271

49 CFR 213.351 - Rail joints.  

Code of Federal Regulations, 2011 CFR

...Transportation 4 2011-10-01 2011-10-01 false Rail joints. 213.351 Section 213.351 Transportation...Operations at Track Classes 6 and Higher § 213.351 Rail joints. (a) Each rail joint, insulated joint, and compromise...

2011-10-01

272

49 CFR 213.351 - Rail joints.  

Code of Federal Regulations, 2012 CFR

...Transportation 4 2012-10-01 2012-10-01 false Rail joints. 213.351 Section 213.351 Transportation...Operations at Track Classes 6 and Higher § 213.351 Rail joints. (a) Each rail joint, insulated joint, and compromise...

2012-10-01

273

Synovial chondromatosis of the acromioclavicular joint  

Microsoft Academic Search

Synovial chondromatosis involving the acromioclavicular joint is very rare. We report a case of synovial chondromatosis of the acromioclavicular joint associated with synovial cyst formation. Arthrography of the acromioclavicular joint revealed that the loose bodies lay within a synovial cyst which was in communication with the acromioclavicular joint. Synovectomy including removal of the synovial cyst and the loose bodies relieved

J. Ozaki; Y. Tomita; Y. Nakagawa; O. Kisanuki; S. Tamai

1993-01-01

274

Degenerative joint disease in captive waterfowl  

Microsoft Academic Search

A retrospective study was conducted to evaluate degenerative joint disease (DJD) in captive waterfowl that died or were euthanized at Fresno's Chaffee Zoo in Fresno, California, USA from 2001 to 2005. Of these, 16 out of 33 birds (48%) had DJD in one or both stifle (femoral–tibiotarsal joint; n = 13), hock (tibiotarsal–tarsometatarsal joint; n = 4), or toe joints

L. A. Degernes; P. S. Lynch; H. L. Shivaprasad

2011-01-01

275

Interface failure in lead free solder joints  

Microsoft Academic Search

The phenomenon of interface failure in lead free solder joints was explored using solder joint array tensile testing. The effects of pad metallization, solder alloy, reflow conditions, and post reflow thermal aging were quantified. The joint strength ranged from 5 to 115MPa. The joint ductility dropped to zero in some cases. The interface microstructure and failure mode were characterized for

Robert Darveaux; Corey Reichman; Nokibul Islam

2006-01-01

276

Jointness and the Impact of the War.  

National Technical Information Service (NTIS)

Operations during World War II clearly and repeatedly demonstrated the advantages of jointness and the penalties for failing to achieve it. At war's end, the Joint Chiefs of Staff (JCS) supported jointness in principle, but the progress of jointness was s...

D. A. Armstrong

1995-01-01

277

Development of cryogenic rotatable heat transfer joints  

Microsoft Academic Search

A summary of cryogenic rotatable heat transfer joint technology development, at Rockwell International Space Division, is presented. Starting with the flight qualified radiative joint on the RM-20B IR sensor of the early 70's, leading to rotatable heat pipe joint, gas conductive joints, rolling-contact-conductance joints, and the more recent work on development and evaluation of cryogenic rotatable seals and mechanical interfaces.

J. A. Sadunas; Z. F. Backovsky; D. E. Wilson

1992-01-01

278

Prosthetic Joint Infections in Elderly Patients  

Microsoft Academic Search

Although prosthetic joint infections (PJIs) occur in a small proportion of patients following total joint arthroplasty, they\\u000a have catastrophic consequences on morbidity and joint function and carry a high economic burden in the elderly patients.\\u000a \\u000a Clinical presentation of prosthetic joint infection is highly variable, and differentiating a painful joint arthroplasty secondary\\u000a to mechanical loosening from an indolent infection can be

Camelia E Marculescu; Elie F. Berbari; Douglas R. Osmon

279

An analysis of a joint shear model for jointed media with orthogonal joint sets; Yucca Mountain Site Characterization Project  

SciTech Connect

This report describes a joint shear model used in conjunction with a computational model for jointed media with orthogonal joint sets. The joint shear model allows nonlinear behavior for both joint sets. Because nonlinear behavior is allowed for both joint sets, a great many cases must be considered to fully describe the joint shear behavior of the jointed medium. An extensive set of equations is required to describe the joint shear stress and slip displacements that can occur for all the various cases. This report examines possible methods for simplifying this set of equations so that the model can be implemented efficiently form a computational standpoint. The shear model must be examined carefully to obtain a computationally efficient implementation that does not lead to numerical problems. The application to fractures in rock is discussed. 5 refs., 4 figs.

Koteras, J.R.

1991-10-01

280

Breathing and temporomandibular joint disease.  

PubMed

Temporomandibular joint disease (TMD) refers to a collection of pain related conditions in the masticatory muscles and temporomandibular joint. Occlusal factors have been implicated in TMD pathogenesis, yet despite decades of research no causal relationship between occlusion and TMD has been found. The significance of psychosocial factors in both the assessment and the long-term management of patients with TMD is receiving increased recognition. The teaching of relaxation skills and coping strategies are effective, proven TMD therapies. The role of breathing re-education in temporomandibular joint (TMJ) disorders is rarely mentioned. A focus on breathing patterns and their disorders potentially explains how biomechanical factors associated with psychosocial influences might lead to pathophysiological changes within the TMJ as well as in the associated muscles. Attention to factors such as breathing and postural rehabilitation provides health professionals valuable, additional tools to help care for patients with TMD. PMID:21665104

Bartley, Jim

2010-06-25

281

Arthroscopy of the Sternoclavicular Joint  

PubMed Central

Traditionally, an open approach has been required to undertake any surgical intervention for intra-articular sternoclavicular joint pathology. This in itself carries a certain operative morbidity, including damage to the underlying mediastinal structures and damage to the sternoclavicular and costoclavicular ligaments, with subsequent joint instability and unsightly scarring. This technical note describes an arthroscopic approach to the sternoclavicular joint that reduces this morbidity. The evolution of the technique including the rationale for portal placement and the angle of instrument insertion is explained. Experience of over 50 arthroscopic procedures including diagnostic arthroscopy, discectomy, excision of loose bodies, and washout and debridement after infection and excision of the medial end of the clavicle for osteoarthritis is detailed.

Tytherleigh-Strong, Graham

2013-01-01

282

A new finger joint prosthesis.  

PubMed

A new finger joint prosthesis is being developed for the proximal and distal interphalangeal positions. Currently available "joint spacer" prostheses provide relief from pain and cosmetic improvement, but relatively poor long-term function. The new prosthesis employs a mechanical hinge at the joint. It is fabricated from titanium alloy (6A14V). The hinge mechanism avoids direct metal to metal contact by using high density polyethylene bearings. In vitro tests of the hinge mechanism have passed 75 million cycles of continuous flexure without failure (n = 12). The hinge also incorporates a mechanical limit stop to prevent hyperextension. The hinge mechanism is enclosed in a sealed elastomeric jacket that isolates the hinge from connective tissue ingrowth. The jacket, equivalent to an artificial synovial membrane, has an integrally textured exterior surface designed to promote tissue attachment to the implant to stabilize tissue capsule formation around the joint. To test the in vivo efficacy of the new design, a series of 12 devices were implanted in the knee joint position of adult rabbits. A jacketed prosthesis was implanted on one side, whereas 2 weeks later an unjacketed control was implanted contralaterally. The animals then were maintained for an 8 week period. At sacrifice, the implants were removed, and the response of the surrounding tissues was studied histologically. At the time of implantation, the range of motion of the joints was approximately 100-105 degrees. There was a progressive loss in range of motion observed in both groups. The fibrous tissue capsule around the jacketed implants, however, was significantly reduced in thickness compared with the controls (mean thickness, 1.5 mm vs. 4.5 mm).(ABSTRACT TRUNCATED AT 250 WORDS) PMID:8268583

Whalen, R L; Bowen, M A; Sarrasin, M J; Fukumura, F; Harasaki, H

283

Putting the 'O' in Joint DOTMLPF: Organizational Capabilities for Joint Task Force Command and Control.  

National Technical Information Service (NTIS)

Across the defense establishment joint transformation is beginning to take hold though unevenly. Sweeping changes concerning joint doctrine training leader development acquisition, and facilities have taken effect under joint purview and direction through...

J. F. Dickens

2005-01-01

284

Recent Advances in Imaging in Psoriatic Arthritis  

PubMed Central

The recent introduction of effective therapies in psoriatic arthritis (PsA) has increased the demand for efficient tools for diagnosis, monitoring and prognostication of PsA, and has caused an increased research effort within imaging in this disease. The clinical appearance of PsA is very diverse, involving the spine, sacroiliac joints, peripheral joints and/or entheses, and accordingly imaging findings vary. In the present paper, we present a review of the recent advances in imaging in PsA, focusing primarily on ultrasonography and magnetic resonance imaging of peripheral disease manifestations.

Poggenborg, Rene Panduro; Terslev, Lene; Pedersen, Susanne Juhl; ?stergaard, Mikkel

2011-01-01

285

Temporomandibular joint disorders in children.  

PubMed

A child's difficulty in verbalizing the precise location and nature of facial pain and jaw dysfunction often results in a nondefinitive history, increasing the importance of the dentist's awareness of the early signs and symptoms of temporomandibular joint disorders (TMD). A focused examination of the masticatory musculature, the temporomandibular joints, and associated capsular and ligamentous structures can reveal if a patient's symptoms are TMD in origin. An accurate differential diagnosis enables timely referral to appropriate health care providers and minimizes the use of diagnostic imaging. PMID:23174613

Howard, James A

2013-01-01

286

Joint bioaccumulation and joint biological activity as ecotoxicological risk indicators  

Microsoft Academic Search

In this contribution, mathematical formulae for the estima- tion of thusly defined indicators are presented. Strategies for assessing biological activity from simultaneous mea- surements of biological effects and internal exposure are given special attention. Relevance of transformation products The question which of the known or suspected transforma- tion products should be included in an assessment of joint persistence (4), secondary

J. Ranke

287

The Interactive Impact of Race and Gender on High School Advanced Course Enrollment  

ERIC Educational Resources Information Center

Data from the North Carolina Department of Public Instruction archive are used to assess the joint effect of race and gender on advanced academic (advanced placement and honors) course enrollment within a school district with an open enrollment policy. Using student SAT scores; the authors compare expected levels of advanced course enrollment for…

Corra, Mamadi; Carter, J. Scott; Carter, Shannon K.

2011-01-01

288

Research Advances  

ERIC Educational Resources Information Center

|Research advances, a new feature in Journal of Chemical Engineering that brings information about innovations in current areas of research to high school and college science faculty with an intent to provide educators with timely descriptions of latest progress in research that can be integrated into existing courses to update course content and…

King, Angela G.

2004-01-01

289

Technological Advancements  

ERIC Educational Resources Information Center

|The influx of technology has brought significant improvements to school facilities. Many of those advancements can be found in classrooms, but when students head down the hall to use the washrooms, they are likely to find a host of technological innovations that have improved conditions in that part of the building. This article describes modern…

Kennedy, Mike

2010-01-01

290

Advanced Hype  

ERIC Educational Resources Information Center

|This article explores the growing popularity of Advanced Placement (AP) courses in U.S. high schools and examines whether AP courses are the solution to the nation's perceived academic gap. Some researchers do not think that AP courses are a panacea for improving science in U.S. schools based on a recent study's finding that AP courses do not…

Viadero, Debra

2006-01-01

291

Fatigue in mechanically fastened composite and metallic joints; Proceedings of the Symposium, Charleston, SC, Mar. 18, 19, 1985  

SciTech Connect

The present conference considers advanced fastener technology for composite and metallic joints, a fatigue life-enhancing and high interference bushing installation employing the 'ForceMate' technique, fatigue life improvement by cold working fastener holes in 7050 aluminum alloy, the fatigue strength of bolted and adhesively bonded structural steel joints, and the effect of load transfer on the fatigue of mechanically fastened metallic joints. Also discussed are the evaluation of a stochastic initial fatigue quality model for fastener holes, the experimental characterization of cracks at open holes and in rounded-end straight attachment lugs, the fatigue of riveted metallic joints, an enhanced stop-drill repair procedure for cracked structures, the influence of fastener flexibility on load transfer and fatigue life prediction in multiple row joints, the strength and lifetime of bolted laminates, and the fatigue of bolted continuous-fiber/sheet-molding-compound composite-metal joints.

Potter, J.M.

1986-01-01

292

Traction-drive force transmission for telerobotic joints  

SciTech Connect

The US Space Station Program is providing many technological developments to meet the increasing demands of designing such a facility. One of the key areas of research is that of telerobotics for space station assembly and maintenance. Initial implementation will be teleoperated, but long-term plans call for autonomous robotics. One of the essential components for making this transition successful is the manipulator joint mechanism. Historically, teleoperated manipulators and industrial robotics have had very different mechanisms for force transmission. This is because the design objectives are almost mutually exclusive. A teleoperator must have very low friction and inertia to minimize operator fatigue; backlash and stiffness are of secondary concern. A robot, however, must have minimum backlash, and high stiffness for accurate and rapid positioning. A joint mechanism has yet to be developed that can optimize these divergent performance objectives. A joint mechanism that approaches this optimal performance was developed for NASA Langley, Automation Technology Branch. It is a traction-drive differential that uses variable preload mechanisms. The differential provides compact, dexterous motion range with a torque density similar to geared systems. The traction drive offers high stiffness and zero backlash---for good robotic performance, and the variable-loading mechanism (VLM) minimizes the drive-train friction---for improved teleoperation. As a result, this combination provides a mechanism to allow advanced manipulation with either teleoperated control or autonomous robotic operation. This paper will address the design principles of both of these major components of the joint mechanism. 4 refs., 8 figs.

Williams, D.M.; Kuban, D.P.

1989-01-01

293

Jointly Sponsored Research Program Energy Related Research  

SciTech Connect

Cooperative Agreement, DE-FC26-98FT40323, Jointly Sponsored Research (JSR) Program at Western Research Institute (WRI) began in 1998. Over the course of the Program, a total of seventy-seven tasks were proposed utilizing a total of $23,202,579 in USDOE funds. Against this funding, cosponsors committed $26,557,649 in private funds to produce a program valued at $49,760,228. The goal of the Jointly Sponsored Research Program was to develop or assist in the development of innovative technology solutions that will: (1) Increase the production of United States energy resources - coal, natural gas, oil, and renewable energy resources; (2) Enhance the competitiveness of United States energy technologies in international markets and assist in technology transfer; (3) Reduce the nation's dependence on foreign energy supplies and strengthen both the United States and regional economies; and (4) Minimize environmental impacts of energy production and utilization. Under the JSR Program, energy-related tasks emphasized enhanced oil recovery, heavy oil upgrading and characterization, coal beneficiation and upgrading, coal combustion systems development including oxy-combustion, emissions monitoring and abatement, coal gasification technologies including gas clean-up and conditioning, hydrogen and liquid fuels production, coal-bed methane recovery, and the development of technologies for the utilization of renewable energy resources. Environmental-related activities emphasized cleaning contaminated soils and waters, processing of oily wastes, mitigating acid mine drainage, and demonstrating uses for solid waste from clean coal technologies, and other advanced coal-based systems. Technology enhancement activities included resource characterization studies, development of improved methods, monitors and sensors. In general the goals of the tasks proposed were to enhance competitiveness of U.S. technology, increase production of domestic resources, and reduce environmental impacts associated with energy production and utilization. This report summarizes the accomplishments of the JSR Program.

Western Research Institute

2009-03-31

294

Knee joint replacement - series (image)  

MedlinePLUS

The knee is a complex joint. It contains the distal end of the femur (the femoral condyles) and the ... The most common cause of knee damage that leads to knee replacement ... is a degenerative disease of the bones of the knee. It causes ...

295

DYNAMIC FRACTURE OF WELDED JOINTS  

Microsoft Academic Search

This paper presents an experimental and analytical investigation of dynamic fracture of T-shaped welded joints (stiffener on a plate) in a high strength steel. A fracture test was designed in which strain rates of several thousand per second can be reached in the weldment region by loading the specimen with tamped explosive. Test conditions can be reliably controlled by adjusting

J. H. GIOVANOLA; R. W. KLOPP; S. W. KIRKPATRICK; W. W. McDONALD

1991-01-01

296

The Strength of Adhesive Joints  

Microsoft Academic Search

The main rules pertaining to the strength of adhesive joints are: (1) This strength is a mechanical (or rheological) property. The local stress which causes the extension of a pre-existing crack can be determined only if the stress pattern in the whole adhint is known and the intensification of stress at flaws is taken into account. (2) The rupture occurs

J. J. Bikerman

1972-01-01

297

Joint Operational Access Concept (JOAC).  

National Technical Information Service (NTIS)

This paper proposes a concept for how joint forces will achieve operational access in the face of armed opposition by a variety of potential enemies and under a variety of conditions, as part of a broader national approach. Operational access is the abili...

2012-01-01

298

Automatic Locking Knee Brace Joint.  

National Technical Information Service (NTIS)

This invention is an apparatus for controlling the pivotal movement of a knee brace comprising a tang-and-clevis joint that has been uniquely modified. Both the tang and the clevis have a set of teeth that, when engaged, can lock the tang and the clevis t...

B. Weddendorf

1995-01-01

299

Trends in biological joint resurfacing  

PubMed Central

The treatment of osteochondral lesions and osteoarthritis remains an ongoing clinical challenge in orthopaedics. This review examines the current research in the fields of cartilage regeneration, osteochondral defect treatment, and biological joint resurfacing, and reports on the results of clinical and pre-clinical studies. We also report on novel treatment strategies and discuss their potential promise or pitfalls. Current focus involves the use of a scaffold providing mechanical support with the addition of chondrocytes or mesenchymal stem cells (MSCs), or the use of cell homing to differentiate the organism’s own endogenous cell sources into cartilage. This method is usually performed with scaffolds that have been coated with a chemotactic agent or with structures that support the sustained release of growth factors or other chondroinductive agents. We also discuss unique methods and designs for cell homing and scaffold production, and improvements in biological joint resurfacing. There have been a number of exciting new studies and techniques developed that aim to repair or restore osteochondral lesions and to treat larger defects or the entire articular surface. The concept of a biological total joint replacement appears to have much potential. Cite this article: Bone Joint Res 2013;2:193–9.

Myers, K. R.; Sgaglione, N. A.; Grande, D. A.

2013-01-01

300

Human Zygapophyseal Joint Synovial Folds  

Microsoft Academic Search

The structure of human zygapophyseal joint synovial folds as seen by high-power light microscopy and transmission electron microscopy is described. Small myelinated nerves are demonstrated in association with some capillaries in the synovial folds. This may have clinical significance in the field of spinal pain.Copyright © 1986 S. Karger AG, Basel

L. G. F. Giles; J. R. Taylor; A. Cockson

1986-01-01

301

Cryopumping field joint can testing  

NASA Astrophysics Data System (ADS)

For long installations, vacuum jacketed piping often comes in 40 foot sections that are butt welded together in the field. A short can is then welded over the bare pipe connection to allow for insulation to be protected from the environment. Traditionally, the field joint is insulated with multilayer insulation and a vacuum is pulled on the can to minimize heat leak through the bare section and prevent frost from forming on the pipe section. The vacuum jacketed lines for the Ares I mobile launch platform were to be a combined 2000 feet long, with 60+ pipe sections and field joint cans. Historically, Kennedy Space Center has drilled a hole in the long sections to create a common vacuum with the field joint can to minimize maintenance on the vacuum jacketed piping. However, this effort looked at ways to use a passive system that didn't require a vacuum, but may cryopump to create its own vacuum. Various forms of aerogel, multilayer insulations, and combinations thereof were tested to determine the best method of insulating the field joint while minimizing maintenance and thermal losses.

Johnson, Wesley; Fesmire, James; Meneghelli, Barry

2012-06-01

302

The Rationale for Joint Mobilization.  

ERIC Educational Resources Information Center

|This paper presents an overview of the functions of connective tissue and the mechanisms of joint injury and contracture formation in relation to therapeutic exercise. The components of connective tissue operation are explained, including fibroblasts, macrophages, plasma cells, and collagen. An examination of the histology of connective tissue as…

Burkhardt, Sandy

303

Joint Civilian Orientation Conference Program.  

National Technical Information Service (NTIS)

We reviewed whether the Assistant Secretary of Defense (Public Affairs) (ASD(PA)) administered the Joint Civilian Orientation Conference (JCOC) program in accordance with public law and DoD policies. This is the third in a series of audits conducted at th...

2009-01-01

304

Deterministic joint remote state preparation  

Microsoft Academic Search

We put forward a new nontrivial three-step strategy to execute joint remote state preparation via Einstein-Podolsky-Rosen pairs deterministically. At variance with all existing protocols, in ours the receiver contributes actively in both preparation and reconstruction steps, although he knows nothing about the quantum state to be prepared.

Nguyen Ba An; Cao Thi Bich; Nung Van Don

2011-01-01

305

Deterministic joint remote state preparation  

Microsoft Academic Search

We put forward a new nontrivial three-step strategy to execute joint remote state preparation via Einstein–Podolsky–Rosen pairs deterministically. At variance with all existing protocols, in ours the receiver contributes actively in both preparation and reconstruction steps, although he knows nothing about the quantum state to be prepared.

Nguyen Ba An; Cao Thi Bich; Nung Van Don

2011-01-01

306

Deterministic joint remote state preparation  

NASA Astrophysics Data System (ADS)

We put forward a new nontrivial three-step strategy to execute joint remote state preparation via Einstein-Podolsky-Rosen pairs deterministically. At variance with all existing protocols, in ours the receiver contributes actively in both preparation and reconstruction steps, although he knows nothing about the quantum state to be prepared.

An, Nguyen Ba; Bich, Cao Thi; Don, Nung Van

2011-09-01

307

Arthrodesis of the Trapeziometacarpal Joint  

Microsoft Academic Search

Over a 10-year period, 32 trapeziometacarpal (TM) joint fusions were performed in 29 patients, and reviewed. Pin fixation with tension band wiring was used in 14 cases, screws in eight cases, a plate in six cases, K-wires in three cases and staple fixation in one case. None was bone grafted. Splinting was applied for 4 to 5 weeks. There were

A. CHAMAY; F. PIAGET-MOREROD

1994-01-01

308

Joint calibration of multiple sensors  

Microsoft Academic Search

Many calibration methods calibrate a pair of sensors at a time. For robotic systems with many sensors, they are often time-consuming to use, and can also lead to inaccurate results. In this paper, we combine a number of ideas in the literature to derive a unified framework that jointly calibrates many sensors a large system. Key to our approach are

Quoc V. Le; Andrew Y. Ng

2009-01-01

309

Advances in GPS translator technology  

NASA Astrophysics Data System (ADS)

Since 1974, two generations of tracking systems employing Global Positioning System (GPS) translators have supported the Navy Trident Fleet Ballistic Missile program. Currently a third generation system is being developed by the GPS Range Applications Joint Program Office (RAJPO) for the SD1 Exoatmospheric Reentry Intercept System (ERIS) program. Further advances in technology are expected to significantly reduce the size, weight and cost of translator systems which will expand their potential use. This paper projects how technology improvements will shape the development of new translator systems, addresses future applications of translator systems and presents a design approach for an Advanced Translator Processing System (ATPS). The ATPS could be deployed on a small general aviation type aircraft to provide over-the-horizon tracking support for multiple range participants.

McConnell, John B.; Greenberg, Robert H.; Pickett, Robert B.; Wildhagen, Phillip C.; Brown, Alison K.

310

State Technologies Advancement Collaborative  

SciTech Connect

The U. S. Department of Energy (DOE), National Association of State Energy Officials (NASEO), and Association of State Energy Research and Technology Transfer Institutions (ASERTTI) signed an intergovernmental agreement on November 14, 2002, that allowed states and territories and the Federal Government to better collaborate on energy research, development, demonstration and deployment (RDD&D) projects. The agreement established the State Technologies Advancement Collaborative (STAC) which allowed the states and DOE to move RDD&D forward using an innovative competitive project selection and funding process. A cooperative agreement between DOE and NASEO served as the contracting instrument for this innovative federal-state partnership obligating funds from DOE's Office of Energy Efficiency and Renewable Energy and Office of Fossil Energy to plan, fund, and implement RDD&D projects that were consistent with the common priorities of the states and DOE. DOE's Golden Field Office provided Federal oversight and guidance for the STAC cooperative agreement. The STAC program was built on the foundation of prior Federal-State efforts to collaborate on and engage in joint planning for RDD&D. Although STAC builds on existing, successful programs, it is important to note that it was not intended to replace other successful joint DOE/State initiatives such as the State Energy Program or EERE Special Projects. Overall the STAC process was used to fund, through three competitive solicitations, 35 successful multi-state research, development, deployment, and demonstration projects with an overall average non-federal cost share of 43%. Twenty-two states were awarded at least one prime contract, and organizations in all 50 states and some territories were involved as subcontractors in at least one STAC project. Projects were funded in seven program areas: (1) Building Technologies, (2) Industrial Technologies, (3) Transportation Technologies, (4) Distributed Energy Resources, (5) Hydrogen Technology Learning Centers, (6) Fossil Energy, and (7) Rebuild America.

David S. Terry

2012-01-30

311

Function of stiff joints may be restored by Ilizarov joint distraction.  

PubMed

Three patients with joint stiffness caused by trauma or infection are reported. The involved joints are the interphalangeal joint of the thumb, patellofemoral joint, and ankle joint. As an alternative for the indicated arthrodesis in these patients, treatment with articulating joint distraction was performed. By use of adapted Ilizarov external ring fixators, gradual distraction was applied to loosen the joint, followed after loosening by a period of exercise during distraction. In all three patients this experimental approach led to a decrease in pain and improvement of joint function that persisted for at least 2 years after treatment. With the use of Ilizarov joint distraction, joint function in cases of joint stiffness may be restored, and the need for an arthrodesis can be postponed. PMID:9553556

van Roermund, P M; van Valburg, A A; Duivemann, E; van Melkebeek, J; Lafeber, F P; Bijlsma, J W; Verbout, A J

1998-03-01

312

Technical status of the Dish/Stirling Joint Venture Program  

NASA Astrophysics Data System (ADS)

Initiated in 1991; the Dish/Stirling Joint Venture Program (DSJVP) is a 5-year, $17.2 million joint venture which is funded by Cummins Power Generation, Inc. (CPG) of Columbus, Indiana and the United States Department of Energy's (DOE) Solar Thermal and Biomass Power Division. Sandia National Laboratories administers and provides technical management for this contract on the DOE's behalf. In January, 1995; CPG advanced to Phase 3 of this three-phase contract. The objective of the DSJVP is to develop and commercialize a 7-kW. Dish/Stirling System for remote power markets by 1997. In this paper, the technical status of the major subsystems which comprise the CPG 7-kW(sub e) Dish/Stirling System is presented. These subsystems include the solar concentrator, heat pipe receiver, engine/alternator, power conditioning, and automatic controls.

Bean, John R.; Diver, Richard B.

313

Pyoderma gangrenosum with wrist joint destruction: case report.  

PubMed

Pyoderma gangrenosum (PG) is a rare, noninfectious, neurotrophic dermatosis. We observed a case of PG mimicking cutaneous and osteoarticular infections that presented with a prolonged ulcer on the forearm, severe wrist pain, anemia, substantial local and systemic inflammation as evaluated by serum laboratory data, and carpal osteolysis. Although PG rarely damages joints, the ulcer extended to the joint and destroyed the osteochondral tissues. Advanced ulcerative colitis, which is a most common comorbidity of PG, proved to be an underlying disease. Antibiotic and surgical treatment did not heal the ulcer, which was successfully treated with corticosteroids. This intractable ulcer is often misdiagnosed. Hence when a patient presents with an enlarged, painful, unusual skin lesion, PG should always be considered. PMID:23267758

Choe, Hyonmin; Sakano, Hiroaki; Takigami, Hidetake; Inaba, Yutaka; Matsuo, Kosuke; Saito, Tomoyuki

2012-12-23

314

Recent development in finite element analysis of self-piercing riveted joints  

Microsoft Academic Search

Self-piercing riveting (SPR) is a high-speed mechanical fastening technique which is suitable for point-joining advanced lightweight\\u000a sheet materials that are dissimilar, coated, and hard to weld. Major advances have been made in recent years in SPR technique.\\u000a Latest literature relating to finite element analysis (FEA) of SPR joints is reviewed in this paper. The recent development\\u000a in FEA of SPR

Xiaocong He; Fengshou Gu; Andrew Ball

315

Advanced Nanoemulsions  

NASA Astrophysics Data System (ADS)

Recent advances in the growing field of nanoemulsions are opening up new applications in many areas such as pharmaceuticals, foods, and cosmetics. Moreover, highly controlled nanoemulsions can also serve as excellent model systems for investigating basic scientific questions about soft matter. Here, we highlight some of the most recent developments in nanoemulsions, focusing on methods of formation, surface modification, material properties, and characterization. These developments provide insight into the substantial advantages that nanoemulsions can offer over their microscale emulsion counterparts.

Fryd, Michael M.; Mason, Thomas G.

2012-05-01

316

29 CFR 791.2 - Joint employment.  

Code of Federal Regulations, 2013 CFR

...REGULATIONS JOINT EMPLOYMENT RELATIONSHIP UNDER FAIR LABOR STANDARDS ACT OF 1938 § 791.2 Joint employment. ...two or more employers at the same time under the Fair Labor Standards Act of 1938, since there is nothing in the...

2013-07-01

317

Simplifying Bridge Expansion Joint Design and Maintenance.  

National Technical Information Service (NTIS)

This report presents a study focused on identifying the most durable expansion joints for the South Carolina Department of Transportation. This is performed by proposing a degradation model for the expansion joints and updating it based on bridge inspecti...

D. Rizos G. Wieger J. M. Caicedo P. Ziehl

2011-01-01

318

30 CFR 36.24 - Engine joints.  

Code of Federal Regulations, 2013 CFR

...PERMISSIBLE MOBILE DIESEL-POWERED TRANSPORTATION EQUIPMENT Construction and Design Requirements § 36.24 Engine joints. (a) Cylinder head. The joint between the cylinder head and block of the engine shall be...

2013-07-01

319

38 CFR 4.66 - Sacroiliac joint.  

Code of Federal Regulations, 2010 CFR

...changes from arthritis in this location are decrease or obliteration of the joint space, with the appearance of increased bone density of the sacrum and ilium and sharpening of the margins of the joint. Disability is manifest from erector spinae...

2010-07-01

320

38 CFR 4.66 - Sacroiliac joint.  

Code of Federal Regulations, 2010 CFR

...changes from arthritis in this location are decrease or obliteration of the joint space, with the appearance of increased bone density of the sacrum and ilium and sharpening of the margins of the joint. Disability is manifest from erector spinae...

2009-07-01

321

38 CFR 4.66 - Sacroiliac joint.  

Code of Federal Regulations, 2013 CFR

...changes from arthritis in this location are decrease or obliteration of the joint space, with the appearance of increased bone density of the sacrum and ilium and sharpening of the margins of the joint. Disability is manifest from erector spinae...

2013-07-01

322

49 CFR 583.15 - Joint ownership.  

Code of Federal Regulations, 2012 CFR

...Transportation (Continued) NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION (CONTINUED) AUTOMOBILE PARTS CONTENT LABELING § 583.15 Joint ownership. (a) A carline jointly owned and/or produced by more...

2012-10-01

323

Predicting variability in joint frequencies from boreholes  

NASA Astrophysics Data System (ADS)

Joints in rock are not evenly spaced, but commonly show clustering. This suggests that boreholes that are a short distance apart can intersect very different numbers of joints. A simple 1D model is used to illustrate variability in joint frequencies from vertical wells intersecting steeply dipping joints. The model indicates that raw joint frequencies logged from core or borehole images can give unreliable inputs into reservoir models, especially when the joints are clustered and variations occur over scales that are much smaller than the resolution of seismic surveys or the grid blocks used in reservoir simulations. Variability in joint frequencies from deviated or horizontal wells can be used, however, to test the variability in joint frequencies from vertical wells.

Peacock, D. C. P.

2006-02-01

324

Joint Operations and the Vicksburg Campaign.  

National Technical Information Service (NTIS)

This historical study investigates why Union joint operations between army and navy forces on the Mississippi and other western rivers were effective. It examines the development of a joint doctrine at the strategic, operational, and tactical levels of wa...

J. W. Tindall

1993-01-01

325

Joint Lessons Learned System and Interoperability.  

National Technical Information Service (NTIS)

This study analyzes the evolution of the Joint Lessons Learned System. It examines historical evidence of interoperability issues in US joint military operations from World War II to the present. Three major conflicts: World War II, Korea, and Vietnam, ar...

A. D. Landry

1989-01-01

326

Bone, Joint, and Muscle Infections in Children  

MedlinePLUS

... American Academy of Orthopaedic Surgeons Bone, Joint, and Muscle Infections in Children Children can develop infections in their bones, joints, or muscles. Often referred to as "deep" infections, the technical ...

327

Joint Operations at Vicksburg: The Decisive Force.  

National Technical Information Service (NTIS)

The joint operations employed in the Civil War provide valuable lessons to all military leaders involved in planning and executing future campaigns. This paper analyzes the extent and results of the joint operations developed and implemented by the Union ...

C. A. Hazard

2002-01-01

328

Building and Using Base Object Models (BOMs) for Modeling and Simulation (M&S) focused Joint Training  

Microsoft Academic Search

Modeling and Simulation (M&S) has proven to be an effective tool for training the warfighter and for planning and preparing against emerging threats within the global community. Key enablers that have contributed to this effectiveness have been the availability of models, tools, and other resources such as terrain databases, network assets, and scenario missions. And, as long as you remain

Paul Gustavson

329

Strength of profile-adhesive joints  

Microsoft Academic Search

The current article presents an attempt to describe the strength of profile-adhesive joints. Its main objective was to develop\\u000a mathematical models describing phenomena occurring in bent mortise joints prevalent in constructions of skeleton furniture,\\u000a but also to determine factors influencing the strength of profile-adhesive joints. The presented cases of gluing of a mortise\\u000a joint reveal that mutual interactions of compressed

J. Smardzewski

2002-01-01

330

Predictions of solder joint fatigue life  

Microsoft Academic Search

Procedures used to predict solder-joint life from calculations of the joint strains and low-cycle fatigue data are described. The fatigue lives of chip-carrier\\/printed-wiring-board joints are predicted and compared to measured values. This prediction utilizes a finite-element analysis of the string distributions in a typical joint acted upon by an imposed displacement. These strains are then used to determine the fatigue

H. D. Solomon; V. Brzozowski; D. G. Thompson

1990-01-01

331

High frequency of meniscal hypertrophy in persons with advanced varus knee osteoarthritis  

Microsoft Academic Search

To examine the morphological changes of the medial meniscus in advanced knee osteoarthritis (OA) we examined 167 knee joints\\u000a of 106 patients who subsequently underwent total knee joint arthroplasty from January to May, 2007. All 106 patients were\\u000a females and their ages ranged from 57 to 83 years (mean 68.7 ± 5.6 years). For patients with complete loss of medial joint\\u000a space by weight-bearing

Kwang Am Jung; Su Chan Lee; Seung Hyun Hwang; Ki Hyuk Yang; Dong Hoon Kim; Jin Hee Sohn; Su Jeong Song; David John Hunter

2010-01-01

332

Radioulnar joint fusion for distal radioulnar joint instability.  

PubMed

Each one of this small group of patients illustrates a rare indication for the radioulnar joint fusion procedure in distal radioulnar joint instability. The case histories tell of a last ditch effort to salvage function in an extremity crippled by painful radioulnar instability after excision of the distal ulna. The fusions healed slowly and two required repeat surgery to achieve union. Today we would routinely add iliac bone graft to the fusion area to hasten healing. Rarely indicated, this is a salvage procedure that is done after failure of other procedures geared to preserve the rotation of the forearm. These patients all had successful salvage of their extremities for activities of daily living, but only one returned to his labor job. All were worker's compensation cases in physical jobs. Two patients had had prior radiocarpal fusions, making them even more restricted in function. This procedure should be kept in mind to be used in the rare cases of painful instability of the distal radioulnar joint when traditional motion-preserving procedures have failed. PMID:1880172

Schneider, L H; Imbriglia, J E

1991-05-01

333

Seismic response of rock joints and jointed rock mass  

SciTech Connect

Long-term stability of emplacement drifts and potential near-field fluid flow resulting from coupled effects are among the concerns for safe disposal of high-level nuclear waste (HLW). A number of factors can induce drift instability or change the near-field flow patterns. Repetitive seismic loads from earthquakes and thermal loads generated by the decay of emplaced waste are two significant factors. One of two key technical uncertainties (KTU) that can potentially pose a high risk of noncompliance with the performance objectives of 10 CFR Part 60 is the prediction of thermal-mechanical (including repetitive seismic load) effects on stability of emplacement drifts and the engineered barrier system. The second KTU of concern is the prediction of thermal-mechanical-hydrological (including repetitive seismic load) effects on the host rock surrounding the engineered barrier system. The Rock Mechanics research project being conducted at the Center for Nuclear Waste Regulatory Analyses (CNWRA) is intended to address certain specific technical issues associated with these two KTUs. This research project has two major components: (i) seismic response of rock joints and a jointed rock mass and (ii) coupled thermal-mechanical-hydrological (TMH) response of a jointed rock mass surrounding the engineered barrier system (EBS). This final report summarizes the research activities concerned with the repetitive seismic load aspect of both these KTUs.

Ghosh, A.; Hsiung, S.M.; Chowdhury, A.H. [Southwest Research Inst., San Antonio, TX (United States). Center for Nuclear Waste Regulatory Analyses

1996-06-01

334

Radiofrequency sacroiliac joint denervation for sacroiliac syndrome  

Microsoft Academic Search

Background and Objectives: Radiofrequency (RF) denervation of the sacroiliac (SI) joint has been advocated for the treatment of sacroiliac syndrome, yet no clinical studies or case series support its use. Methods: We report the results of a consecutive series of 50 SI joint RF denervations performed in 33 patients with sacroiliac syndrome. All patients underwent diagnostic SI joint injections with

F. Michael Ferrante; Lawrence F. King; Elizabeth A. Roche; Philip S. Kim; Margaret Aranda; Leslie R. DeLaney; Issam A. Mardini; Andrew J. Mannes

2001-01-01

335

Analysis of Adhesively Bonded Riveted Joints  

Microsoft Academic Search

This paper represents the analysis and modeling of adhesively bonded single lap riveted joints. The present work aimed at recommending appropriate configuration and characterization of these joints for maximum utilization. The present study includes the effectiveness of bond line thickness, the bonded layer configuration, and the situation of dissimilar thickness joints. The finite-element technique was used throughout the analysis of

Ali M. Al-Samhan

336

The frictional properties of joints in rock  

Microsoft Academic Search

Summary The conditions for sliding over artificial joint surfaces have been studied experimentally by cutting rock cylinders at various angles to their axes and studying slip over these surfaces in a triaxial testing apparatus. The types of joint used were: (i) filled with plaster to simulate a soft joint filling, (ii) bare surfaces ground approximately flat, and (iii) natural surfaces

J. C. Jaeger

1959-01-01

337

17 CFR 300.105 - Joint accounts.  

Code of Federal Regulations, 2013 CFR

...2013-04-01 2013-04-01 false Joint accounts. 300.105 Section 300.105 ...SECURITIES INVESTOR PROTECTION CORPORATION Accounts of âseparateâ Customers of Sipc Members § 300.105 Joint accounts. (a) A joint account shall be...

2013-04-01

338

49 CFR 234.233 - Rail joints.  

Code of Federal Regulations, 2011 CFR

... 4 2011-10-01 2011-10-01 false Rail joints. 234.233 Section 234.233 Transportation...Testing Maintenance Standards § 234.233 Rail joints. Each non-insulated rail joint located within the limits of a...

2011-10-01

339

49 CFR 234.233 - Rail joints.  

Code of Federal Regulations, 2012 CFR

... 4 2012-10-01 2012-10-01 false Rail joints. 234.233 Section 234.233 Transportation...Testing Maintenance Standards § 234.233 Rail joints. Each non-insulated rail joint located within the limits of a...

2012-10-01

340

Septic arthritis of the acromioclavicular joint  

Microsoft Academic Search

A patient with isolated pyogenous arthritis of the acromioclavicular joint (A-C joint) caused by Streptococcus viridans is described. The patient had no underlying disease. Minor trauma preceded shortly the development of the septic process. The patient was treated successfully with surgical drainage and antibiotics. To our knowledge this is the first case report of septic arthritis of the A-C joint

A. Blankstein; J. L. Amsallem; E. Rubinstein; H. Horoszowski; I. Farin

1985-01-01

341

Failure Assessment Diagram for Titanium Brazed Joints.  

National Technical Information Service (NTIS)

The interaction equation was used to predict failure in Ti-4V-6Al joints brazed with Al 1100 filler metal. The joints used in this study were geometrically similar to the joints in the brazed beryllium metering structure considered for the ATLAS telescope...

D. F. Puckett J. S. Jones M. M. Powell Y. Flom

2011-01-01

342

Computer simulation of solder joint failure  

Microsoft Academic Search

The thermomechanical fatigue failure of solder joints is increasingly becoming an important reliability issue for electronic packages. The purpose of this Laboratory Directed Research and Development (LDRD) project was to develop computational tools for simulating the behavior of solder joints under strain and temperature cycling, taking into account the microstructural heterogeneities that exist in as-solidified near eutectic Sn-Pb joints, as

S. N. Burchett; D. R. Frear; M. M. Rashid

1997-01-01

343

The joint behaviors of intelligent agents  

Microsoft Academic Search

Joint behaviors widely existing in intelligent systems are important to investigate the cooperation among intelligent agents. In this paper, we put forward a comprehensive and novel model of joint behaviors in support of analysis and design of intelligent systems. The model includes two kinds of joint behaviors, their formal semantics are defined, and important properties are discussed, specified and proved.

Xinjun Mao; Huaiming Wang; Gang Wu

2003-01-01

344

Prediction of Solder Joint Fatigue Life.  

National Technical Information Service (NTIS)

This study details the procedures used to predict the solder joint life from calculations of the joint strains and low-cycle fatigue data. The fatigue life of chip carrier/printed wiring board joints are predicted and compared to measured values. This pre...

D. G. Thompson H. D. Solomon V. Brzozowski

1988-01-01

345

New insights in critical solder joint location  

Microsoft Academic Search

Current numerical modeling approaches to assess BGA solder joint thermal mechanical fatigue, typically identify the max DNP (distance from neutral point) solder joint as the first to fail. An experimental and numerical analysis has shown that critical solder joints can be located interior to the max DNP location. In this work, FCBGA packages were subjected to accelerated thermal cycling stress.

Mitul Modi; Carolyn McCormick; Norman Armendariz

2005-01-01

346

PROSTHETIC JOINT INFECTION DUE TO HAEMOPHILUS APHROPHILUS  

Microsoft Academic Search

A case of prosthetic joint infection due to Haemophilus aphrophilus is presented. A 76-year-old woman, with a long history of pain in her left hip and raised inflammatory markers, underwent prosthetic joint excision. Six samples of pus and tissue were taken from the joint and Haemophilus aphrophilus was cultured from 3 of these specimens. We review the clinical and microbiological

347

Russian upstream joint ventures logging progress  

SciTech Connect

This paper reports that Occidental Petroleum Corp. has begun exporting oil from Russia as part of an enhanced recovery joint venture in western Siberia. Oxy holds a 50% interest in the joint venture company, Vanyoganneft, and will market the oil. In other activity, two Canadian companies are marking progress with Russian upstream joint ventures.

Not Available

1992-11-02

348

Static model of pneumatic flexible rotary joint  

Microsoft Academic Search

Service robot, bionic robot and agricultural robot must directly contact with organism, which requires high security and adaptability. Flexible pneumatic actuators and joints can meet this demand. A type of flexible pneumatic rotary joint is proposed in this paper, based on the flexible pneumatic actuator FPA. The rotation movement is realized by inflating and deflating the rotary joint chamber. According

Guanjun Bao; Qinghua Yang; Shanghui Li; Libin Zhang

2009-01-01

349

Autologous fat grafts placed around temporomandibular joint total joint prostheses to prevent heterotopic bone formation  

Microsoft Academic Search

This study evaluated 1) the efficacy of packing autologous fat grafts around temporomandibular joint (TMJ) total joint prosthetic reconstruc- tions to prevent fibrosis and heterotopic bone formation and 2) the ef- fects on postsurgical joint mobility and jaw function. One hundred fifteen patients (5 males and 110 females) underwent TMJ reconstruction with total joint prostheses and simultaneous fat grafts (88

Larry M. Wolford; Carlos A. Morales-Ryan; Patricia Garcia Morales; Daniel Serra Cassano

350

Autologous fat transplantation around temporomandibular joint total joint prostheses: Preliminary treatment outcomes  

Microsoft Academic Search

Purpose: This study evaluated the efficacy of autologous fat grafting to the temporomandibular joint (TMJ) as an adjunct to prosthetic joint reconstruction in preventing fibrosis and heterotopic bone formation and determined its effects on postoperative joint mobility.Patients and Methods: Fifteen patients (2 male, 13 female) underwent TMJ reconstruction with Techmedica (Techmedica, Inc, Camarillo, CA) custom-made total joint prostheses. Seven patients

Larry M Wolford; Spiro C Karras

1997-01-01

351

Effect of joint flexibility in adhesively bonded composite panel-to-flange joints  

Microsoft Academic Search

An experimental and numerical study was conducted to investigate the postbuckling induced failure in adhesively bonded composite postbuckled panel-to-flange (ABPTF) joints. Each ABPTF joint structure consists of two laminated flanges bonded to a long laminated panel. When the ABPTF joint structure is loaded in compression, the long panel buckles and then generates a relatively large peel stress in the joints.

L. Tong; A. Sheppard; D. Kelly; P. Chalkley

1998-01-01

352

In vivo human knee joint dynamic properties as functions of muscle contraction and joint position  

Microsoft Academic Search

Information on the dynamic properties (joint stiffness, viscosity and limb inertia) of the human knee joint is scarce in the literature, especially for actively contracting knee musculature. A joint driving device was developed to apply small-amplitude random perturbations to the human knee at several flexion angles with the subject maintaining various levels of muscle contraction. It was found that joint

Li-Qun Zhang; Gordon Nuber; Jesse Butler; Mark Bowen; William Z. Rymer

1997-01-01

353

Proximal Tibiofibular Joint Ganglion CystsExcision, Recurrence, and Joint Arthrodesis  

Microsoft Academic Search

Objective: Proximal tibiofibular joint proximal tibiofibular joint cysts are rare entities that can cause disability. Excision remains the traditional surgical treatment. Cyst recurrence has been a problem. This study reviews one of the largest series of patients with proximal tibiofibular joint cysts and evaluates the role of a new surgical option, proximal tibiofibular joint fusion.Methods: Thirteen patients were admitted to

Shana Miskovsky; Christopher Kaeding; Lawrence Weis

2004-01-01

354

Lamb wave propagation in a restricted geometry composite pi-joint specimen  

NASA Astrophysics Data System (ADS)

The propagation of elastic waves in a material can involve a number of complex physical phenomena, resulting in both subtle and dramatic effects on detected signal content. In recent years, the use of advanced methods for characterizing and imaging elastic wave propagation and scattering processes has increased, where for example the use of scanning laser vibrometry and advanced computational models have been used very effectively to identify propagating modes, scattering phenomena, and damage feature interactions. In the present effort, the propagation of Lamb waves within a narrow, constrained geometry composite pi-joint structure are studied using 3D finite element models and scanning laser vibrometry measurements, where the effects of varying sample thickness, complex joint curvatures, and restricted structure geometries are highlighted, and a direct comparison of computational and experimental results are provided for simulated and realistic geometry composite pi-joint samples.

Blackshire, James L.; Soni, Som

2012-05-01

355

Rapid prototyping assisted fabrication of the customised temporomandibular joint implant: a case report  

Microsoft Academic Search

Purpose – The purpose of this paper was to find a successful treatment modality for patients suffering from temporomandibular joint (TMJ) ankylosis who could not be treated through traditional surgeries. Design\\/methodology\\/approach – This work integrated the unique capabilities of the imaging technique, the rapid prototyping (RP) technology and the advanced manufacturing technique to develop the customised TMJ implant. The patient

T. R. Deshmukh; A. M. Kuthe; S. M. Chaware; B. Vaibhav; D. S. Ingole

2011-01-01

356

Comparison of different methods of temporomandibular joint disc reconstruction - An animal model  

Microsoft Academic Search

The optimum method of temporomandibular joint (TMJ) reconstruction has not been defined despite numerous surgical treatments and several well controlled clinical trials. Animal models offer an experimental method allowing direct comparison of standardized surgical techniques. Advanced osteoarthrosis was induced bilaterally in 12 mature merino sheep. Three months later unilateral surgical reconstruction was performed. Four sheep had discectomy alone, four discectomy

Nobumi Ogi; Jun-Ichi Ishimaru; Kenichi Kurita; Yujiro Handa; Robert H. B. Jones; Alastair N. Goss

1997-01-01

357

Bilateral claudication results in alterations in the gait biomechanics at the hip and ankle joints  

Microsoft Academic Search

Claudication is the most common symptomatic manifestation of peripheral arterial disease (PAD), producing significant ambulatory compromise. The purpose of this study was to use advanced biomechanical gait analysis to determine the gait alterations occurring in claudicating patients both before and after onset of claudication pain in their legs. Hip, knee, and ankle joint moments were measured in claudicating patients (age:

Shing-Jye Chen; Iraklis Pipinos; Jason Johanning; Matija Radovic; Jessie M. Huisinga; Sara A. Myers; Nicholas Stergiou

2008-01-01

358

Arthroscopic surgery of the temporomandibular joint: comparison of two successful techniques  

Microsoft Academic Search

We have compared two techniques of arthroscopic surgery for advanced internal derangement of the temporomandibular joint (TMJ). Patients with stage III or above TMJ internal derangement, who had not responded to three months of non-surgical treatment, were prospectively and randomly assigned to one of two types of treatment. One group had arthroscopic lysis and lavage (ALL) and the other had

H. Miyamoto; H. Sakashita; M. Miyata; A. N. Goss

1999-01-01

359

PROCEEDINGS: 1985 JOINT SYMPOSIUM ON STATIONARY COMBUSTION NOX CONTROL. VOLUME 1. UTILITY BOILER APPLICATIONS  

EPA Science Inventory

The two-volume proceedings document the more than 60 papers, describing recent advances in NOx control technology, that were presented at the 1985 Joint Symposium on Stationary Combustion NOx Control, May 6-9, 1985, in Boston, MA. The papers covered the following topics: the stat...

360

Autophagy and Cartilage Homeostasis Mechanisms in Joint Health, Aging and Osteoarthritis  

PubMed Central

Osteoarthritis (OA) represents the most prevalent joint disease but neither preventive measures nor disease-modifying OA drugs (DMOADs) are available and a continuing need exists for safe and more effective symptom-modifying therapies. Failures of previous clinical trials on DMOADs in patients with established or advanced disease motivate investigation of mechanisms that maintain joint health. Enhancing such mechanisms may be a novel approach to OA risk reduction. Aging is one of its most important OA risk factors. However, aging of joint cartilage is a process that is distinct from the subsequent cartilage changes that develop as OA is initiated. This review is focused on mechanisms that maintain cell and tissue homeostasis, and how these mechanisms fail during the aging process. Augmentation of homeostasis mechanisms will be discussed as a novel avenue to delay joint aging and reduce OA risk.

Lotz, Martin; Carames, Beatriz

2011-01-01

361

Complications of small joint arthroplasty.  

PubMed

Arthritis in the small joints of the hand can be treated with arthrodesis or arthroplasty. Arthrodesis has known risks of infection, pain, and nonunion. Distal interphalangeal (DIP) arthroplasty has been successful in preserving motion and alleviating pain for distal DIP, proximal interphalangeal, and metacarpophalangeal joints. Unfortunately, complications arise that limit the success of surgery. Silicone implants have been reliable for many years but still present with the risks of infection, implant breakage, stiffness, and pain. Newer implant designs may limit some of these complications, but present with unique problems such as dislocations and loosening. It is not yet clear as to which type of implant provides the most reliable results, although implant arthroplasty appears to give better function than arthrodesis. Silicone arthroplasty does not lead to silicone synovitis and is a reliable procedure. Pyrocarbon implants are showing some promise, particularly in the osteoarthritic patient. PMID:20494746

Drake, Matthew L; Segalman, Keith A

2010-05-01

362

Sonography of the knee joint?  

PubMed Central

The aim of this article is to review the sonographic appearances of common disorders involving the knee joint. Ultrasound is a sensitive method for diagnosis of tendon injuries. Injured ligaments appear swollen with mixed echogenicity. Meniscal injuries and muscle tears can be easily diagnosed. Ultrasound shows synovial thickening and effusion in inflammatory arthropathy and erosions of the articular surface in degenerative arthritis. It can be used effectively in the detection of rheumatoid arthritic activity and for grading degenerative arthritis lesions. Cystic lesions, as well as benign and malignant soft-tissue masses, are clearly delineated. Ultrasound is a safe noninvasive imaging modality that can be used for diagnosis of different disorders involving the knee joint.

Razek, A.A.K.A.; Fouda, N.S.; Elmetwaley, N.; Elbogdady, E.

2009-01-01

363

Hydraulic Fracturing of Jointed Formations  

Microsoft Academic Search

Measured by volume, North America's largest hydraulic fracturing operations have been conducted at Fenton Hill, New Mexico to create geothermal energy reservoirs. In the largest operation 21,000 m³ of water were injected into jointed granitic rock at a depth of 3.5 km. Microearthquakes induced by this injection were measured with geophones placed in five wells drilled into, or very close,

H. D. Murphy; M. C. Fehler

1986-01-01

364

Lubrication of the Temporomandibular Joint  

Microsoft Academic Search

Although tissue engineering of the temporomandibular joint (TMJ) structures is in its infancy, tissue engineering provides\\u000a the revolutionary possibility for treatment of temporomandibular disorders (TMDs). Recently, several reviews have provided\\u000a a summary of knowledge of TMJ structure and function at the biochemical, cellular, or mechanical level for tissue engineering\\u000a of mandibular cartilage, bone and the TMJ disc. As the TMJ

Eiji Tanaka; Michael S. Detamore; Kotaro Tanimoto; Nobuhiko Kawai

2008-01-01

365

Joint stabilizing projects in defense  

SciTech Connect

Joint defensive projects could increase stability and decrease the alert rates of strategic forces. Areas include the defense of the US, Commonwealth of Independent States (CIS), and their allies against third world threats; protection against each other`s accidental or unauthorized launches; and defense against intentional attacks. The most promising area appears to be defining interfaces for the handover of satellite warning and trajectory information, which applies to most phases of theater defense and mutual protection. 19 refs.

Canavan, G.H.; Browne, J.C.; Joseph, R.J.

1992-06-01

366

Joint stabilizing projects in defense  

SciTech Connect

Joint defensive projects could increase stability and decrease the alert rates of strategic forces. Areas include the defense of the US, Commonwealth of Independent States (CIS), and their allies against third world threats; protection against each other's accidental or unauthorized launches; and defense against intentional attacks. The most promising area appears to be defining interfaces for the handover of satellite warning and trajectory information, which applies to most phases of theater defense and mutual protection. 19 refs.

Canavan, G.H.; Browne, J.C.; Joseph, R.J.

1992-06-01

367

Analytical and Experimental Assessment of Seismic Vulnerability of Beam-Column Joints without Transverse Reinforcement in Concrete Buildings  

NASA Astrophysics Data System (ADS)

Beam-column joints in concrete buildings are key components to ensure structural integrity of building performance under seismic loading. Earthquake reconnaissance has reported the substantial damage that can result from inadequate beam-column joints. In some cases, failure of older-type corner joints appears to have led to building collapse. Since the 1960s, many advances have been made to improve seismic performance of building components, including beam-column joints. New design and detailing approaches are expected to produce new construction that will perform satisfactorily during strong earthquake shaking. Much less attention has been focused on beam-column joints of older construction that may be seismically vulnerable. Concrete buildings constructed prior to developing details for ductility in the 1970s normally lack joint transverse reinforcement. The available literature concerning the performance of such joints is relatively limited, but concerns about performance exist. The current study aimed to improve understanding and assessment of seismic performance of unconfined exterior and corner beam-column joints in existing buildings. An extensive literature survey was performed, leading to development of a database of about a hundred tests. Study of the data enabled identification of the most important parameters and the effect of each parameter on the seismic performance. The available analytical models and guidelines for strength and deformability assessment of unconfined joints were surveyed and evaluated. In particular, The ASCE 41 existing building document proved to be substantially conservative in joint shear strength estimation. Upon identifying deficiencies in these models, two new joint shear strength models, a bond capacity model, and two axial capacity models designed and tailored specifically for unconfined beam-column joints were developed. The proposed models strongly correlated with previous test results. In the laboratory testing phase of the current study, four full-scale corner beam-column joint subassemblies, with slab included, were designed, built, instrumented, tested, and analyzed. The specimens were tested under unidirectional and bidirectional displacement-controlled quasi-static loading that incorporated varying axial loads that simulated overturning seismic moment effects. The axial loads varied between tension and high compression loads reaching about 50% of the column axial capacity. The test parameters were axial load level, loading history, joint aspect ratio, and beam reinforcement ratio. The test results proved that high axial load increases joint shear strength and decreases the deformability of joints failing in pure shear failure mode without beam yielding. On the contrary, high axial load did not affect the strength of joints failing in shear after significant beam yielding; however, it substantially increased their displacement ductility. Joint aspect ratio proved to be instrumental in deciding joint shear strength; that is the deeper the joint the lower the shear strength. Bidirectional loading reduced the apparent strength of the joint in the uniaxial principal axes. However, circular shear strength interaction is an appropriate approximation to predict the biaxial strength. The developed shear strength models predicted successfully the strength of test specimens. Based on the literature database investigation, the shear and axial capacity models developed and the test results of the current study, an analytical finite element component model based on a proposed joint shear stress-rotation backbone constitutive curve was developed to represent the behavior of unconfined beam-column joints in computer numerical simulations of concrete frame buildings. The proposed finite element model included the effect of axial load, mode of joint failure, joint aspect ratio and axial capacity of joint. The proposed backbone curve along with the developed joint element exhibited high accuracy in simulating the test response of the current test specimens as well as previous test joints. Fi

Hassan, Wael Mohammed

368

Mechanical flexible joint design document  

NASA Astrophysics Data System (ADS)

The purpose of this report is to document the status of the Mechanical Flexible Joint (MFJ) Design Subtask with the intent of halting work on the design. Recommendations for future work is included in the case that the task is to be resumed. The MFJ is designed to eliminate two failure points from the current flex joint configuration, the inner 'tripod configuration' and the outer containment jacket. The MFJ will also be designed to flex 13.5 degrees and have three degrees of freedom. By having three degrees of freedom, the MFJ will allow the Low Pressure Fuel Duct to twist and remove the necessity to angulate the full 11 degrees currently required. The current flex joints are very labor intensive and very costly and a simple alternative is being sought. The MFJ is designed with a greater angular displacement, with three degrees of freedom, to reside in the same overall envelope, to meet weight constraints of the current bellows, to be compatible with cryogenic fuel and oxidizers, and also to be man-rated.

Daily, Vic

1993-10-01

369

Advanced Turbine Systems Program and coal applications  

Microsoft Academic Search

The US Department of Energy (DOE) is conducting a program to develop ultra high-efficiency, cost-effective, environmentally benign gas turbine systems for industrial and utility applications. The Advanced Turbine Systems (ATS) Program, jointly managed by the DOE`s Office of Fossil Energy (DOE\\/FE) and Office of Conservation and Renewable Energy (DOE\\/CE), will lead to the commercial offering by industry of systems meeting

H. A. Jr. Webb; R. A. Bajura; E. L. Jr. Parsons

1993-01-01

370

Advanced Turbine Systems Program and coal applications  

Microsoft Academic Search

The US Department of Energy (DOE) is conducting a program to develop ultra high-efficiency, cost-effective, environmentally benign gas turbine systems for industrial and utility applications. The Advanced Turbine Systems (ATS) Program, jointly managed by the DOE's Office of Fossil Energy (DOE\\/FE) and Office of Conservation and Renewable Energy (DOE\\/CE), will lead to the commercial offering by industry of systems meeting

H. A. Jr. Webb; R. A. Bajura; E. L. Jr. Parsons

1993-01-01

371

Composite material stub-blade wing joint  

NASA Astrophysics Data System (ADS)

The viability of a composite stub-blade wing joint for high-altitude long-endurance aircraft was investigated in a joint-design study. The results of an analysis show that the resulting joint design is capable of carrying moderately high bending, shear, and torsional loads. The stub-blade wing joint design is weight-competitive with the traditional tension-type wing joint. In addition, it offers attractive features such as the ease of assembly and disassembly, the ease of fabrication, and an aerodynamic smoothness.

Franklin, Walter M.; Kreimendahl, Bryan W.

372

Analysis of NSTX TF Joint Voltage Measurements  

SciTech Connect

This report presents findings of analyses of recorded current and voltage data associated with 72 electrical joints operating at high current and high mechanical stress. The analysis goal was to characterize the mechanical behavior of each joint and thus evaluate its mechanical supports. The joints are part of the toroidal field (TF) magnet system of the National Spherical Torus Experiment (NSTX) pulsed plasma device operating at the Princeton Plasma Physics Laboratory (PPPL). Since there is not sufficient space near the joints for much traditional mechanical instrumentation, small voltage probes were installed on each joint and their voltage monitoring waveforms have been recorded on sampling digitizers during each NSTX ''shot''.

Woolley R

2005-10-07

373

Joint denervation and neuroma surgery as joint-preserving therapy for ankle pain.  

PubMed

Partial joint denervation or surgical neuroma therapy are alternative concepts to treat pain around the ankle joint that preserve joint function and relieve pain by interrupting neural pathways that transmit pain impulses from the joint to the brain. This review article summarizes the indication, anatomic background, operative techniques, and clinical results of joint denervation or neuroma surgery, which, although rarely reported and used, may provide a valuable alternative treatment in selected patients with neurogenous problems around the ankle. PMID:24008220

Gohritz, Andreas; Dellon, A Lee; Kalbermatten, Daniel; Fulco, Ilario; Tremp, Mathias; Schaefer, Dirk J

2013-09-01

374

Jointly Sponsored Research Program. Final report  

SciTech Connect

The Jointly Sponsored Research Program (JSRP) is a US Department of Energy (DOE) program funded through the Office of Fossil Energy and administered at the Morgantown Energy Technology Center. Under this program, which has been in place since Fiscal Year 1990, DOE makes approximately $2.5 million available each year to the Energy and Environmental Research Center (EERC) to fund projects that are of current interest to industry but which still involve significant risk, thus requiring some government contribution to offset the risk if the research is to move forward. The program guidelines require that at least 50% of the project funds originate from nonfederal sources. Projects funded under the JSRP often originate under a complementary base program, which funds higher-risk projects. The projects funded in Fiscal Year 1996 addressed a wide range of Fossil Energy interests, including hot-gas filters for advanced power systems; development of cleaner, more efficient processing technologies; development of environmental control technologies; development of environmental remediation and reuse technologies; development of improved analytical techniques; and development of a beneficiation technique to broaden the use of high-sulfur coal. Descriptions and status for each of the projects funded during the past fiscal year are included in Section A of this document, Statement of Technical Progress.

NONE

1997-07-01

375

Nonoperative treatment of metatarsophalangeal joint synovitis.  

PubMed

The results of nonoperative treatment of metatarsophalangeal (MP) joint synovitis in 13 patients without known rheumatologic conditions (15 joints) were reviewed. Average duration of forefoot pain was 4 +/- 3 months (range 0.5-12 months), except for one patient who had pain for 30 months. The second MP joint was involved in nine cases (60%), and the third was involved in six cases (40%). Examination revealed tenderness and palpable fullness of the MP joint in all cases; painful dorsal drawer sign was present in 10 cases (67%), adjacent interdigital tenderness in six cases (40%), and hammertoe deformity in eight cases (53%). Treatment included intra-articular corticosteroid injection and rocker-sole show modification to limit MP joint dorsiflexion. At follow-up evaluation (18 +/- 9 months, range 4-26 months), the involved MP joint was asymptomatic in nine joints (60%), improved or almost asymptomatic in five joints (33%), and operated in one (7%) joint. Two of seven (29%) joints not initially associated with hammertoe developed a mild hammertoe deformity from time of diagnosis to follow-up. In conclusion, nonoperative treatment can be effective for MP joint synovitis, and the incidence of progressive hammertoe deformity in successfully treated cases is low. PMID:8749348

Trepman, E; Yeo, S J

1995-12-01

376

ADVANCED CUTTINGS TRANSPORT STUDY  

SciTech Connect

This is the third quarterly progress report for Year 3 of the ACTS Project. It includes a review of progress made in: (1) Flow Loop construction and development and (2) research tasks during the period of time between Jan. 1, 2002 and Mar. 31, 2002. This report presents a review of progress on the following specific tasks: (a) Design and development of an Advanced Cuttings Transport Facility (Task 3: Addition of a Cuttings Injection/Separation System), (b) Research project (Task 6): ''Study of Cuttings Transport with Foam Under LPAT Conditions (Joint Project with TUDRP)'', (c) Research project (Task 9b): ''Study of Foam Flow Behavior Under EPET Conditions'', (d) Research project (Task 10): ''Study of Cuttings Transport with Aerated Mud Under Elevated Pressure and Temperature Conditions'', (e) Research on three instrumentation tasks to measure: Cuttings concentration and distribution in a flowing slurry (Task 11), Foam texture while transporting cuttings. (Task 12), and Viscosity of Foam under EPET (Task 9b); (f) Development of a Safety program for the ACTS Flow Loop, progress on a comprehensive safety review of all flow-loop components and operational procedures. (Task 1S); and (g) Activities towards technology transfer and developing contacts with Petroleum and service company members, and increasing the number of JIP members.

Troy Reed; Stefan Miska; Nicholas Takach; Kaveh Ashenayi; Mark Pickell; Len Volk; Mike Volk; Evren Ozbayoglu; Lei Zhou

2002-04-30

377

Aging of defective electrical joints in underground power distribution systems  

Microsoft Academic Search

Electrical joints can be weak points in an underground distribution supply system. Cyclic loads and the fact that electrical joints are inside premolded rubber cable joints both greatly affect their reliability. Within the framework of a preventive maintenance program, we have studied the life expectancy of underground cable joints with defective electrical joints. Three types of cable joints were subjected

Daniel Fournier

1998-01-01

378

Evaluation of the age-related changes in movement smoothness in the lower extremity joints during lifting.  

PubMed

The purpose of this study was to analyze age-related movement smoothness changes in the lower extremity joints during load lifting. A total of 10 young and 13 elderly subjects participated in the study. Infrared reflective markers were attached to body landmarks in each subject. While the subjects stood on force plates and lifted a box, the marker displacements and ground reaction forces were measured using a 3D motion analysis system. The jerk square mean value (JSM) was defined as the lower extremity joint movement smoothness index during lifting. JSM represented the average of the square of the joint angle third derivative value, according to the jerk third derivative of the position data. Each subject's JSM values were calculated for the hip, knee and ankle joints. Movement smoothness appeared to decrease as JSM increased. Multiple regression analyses were performed for dependent variables (hip, knee and ankle joint JSM values) and independent variables (age, hand grip strength, sex difference and lifting duration). The level of significance was set at p<0.05. For the hip joint JSM, the regression coefficient for age was significantly positive and that for lifting duration was significantly negative. For the knee joint JSM, the regression coefficient for lifting duration was significantly negative. For the ankle joint JSM, the regression coefficients for age and hand grip strength were significantly positive and that for lifting duration was significantly negative. These results suggest that movement smoothness in the hip and ankle joints during lifting decreases with advancing age. PMID:19800238

Sakata, Kiyoshi; Kogure, Akira; Hosoda, Masataka; Isozaki, Koji; Masuda, Tadashi; Morita, Sadao

2009-10-01

379

Rate-dependent properties of Sn-Ag-Cu based lead-free solder joints for WLCSP  

Microsoft Academic Search

The increasing demand for portable electronics has led to the shrinking in size of electronic components and solder joint dimensions. The industry also made a transition towards the adoption of lead-free solder alloys, commonly based around the Sn–Ag–Cu alloys. As knowledge of the processes and operational reliability of these lead-free solder joints (used especially in advanced packages) is limited, it

Y. A. Su; L. B. Tan; T. Y. Tee; V. B. C. Tan

2010-01-01

380

Leukocyte and bacteria imaging in prosthetic joint infection.  

PubMed

There has been a significant increase in the number of joint prosthesis replacements worldwide. Although relatively uncommon, complications can occur with the most serious being an infection. Various radiological and nuclear imaging techniques are available to diagnose prosthetic joint infections (PJI). In this review article, we describe the pathophysiology of PJI, the principles of nuclear medicine imaging and the differences between Single Photon Emission Computed Tomography (SPECT) and Positron Emission Tomography (PET). The value of nuclear medicine techniques for clinical practice is also discussed. Then we provide an overview of the most often used radionuclide imaging techniques that may be helpful in diagnosing prosthetic joint infection: the (67)Ga-citrate, labelled white blood cells in vitro and in vivo (monoclonal antibodies directed against specific targets on the leukocytes), and (18)F-fluorodeoxyglucose ((18)F-FDG). We describe their working methods, the pitfalls, and the interpretation criteria. Furthermore, we review recent advances in imaging bacteria, a molecular imaging method that holds promises for the detection of occult infections. We conclude proposing two diagnostic flow-charts, based on data in the literature, that could help the clinicians to choose the best nuclear imaging method when they have a patient with suspicion of or with proven PJI. PMID:23325539

Glaudemans, Andor W J M; Galli, Filippo; Pacilio, Marta; Signore, Alberto

2013-01-16

381

Evolving intentions for social interaction: from entrainment to joint action.  

PubMed

This article discusses four different scenarios to specify increasingly complex mechanisms that enable increasingly flexible social interactions. The key dimension on which these mechanisms differ is the extent to which organisms are able to process other organisms' intentions and to keep them apart from their own. Drawing on findings from ecological psychology, scenario 1 focuses on entrainment and simultaneous affordance in 'intentionally blind' individuals. Scenario 2 discusses how an interface between perception and action allows observers to simulate intentional action in others. Scenario 3 is concerned with shared perceptions, arising through joint attention and the ability to distinguish between self and other. Scenario 4 illustrates how people could form intentions to act together while simultaneously distinguishing between their own and the other's part of a joint action. The final part focuses on how combining the functionality of the four mechanisms can explain different forms of social interactions. It is proposed that basic interpersonal processes are put to service by more advanced functions that support the type of intentionality required to engage in joint action, cultural learning, and communication. PMID:18292061

Knoblich, Günther; Sebanz, Natalie

2008-06-12

382

Proceedings of the international consensus on periprosthetic joint infection.  

PubMed

Louis Pasteur once said that: "Fortune favours the prepared mind." As one of the great scientists who contributed to the fight against infection, he emphasised the importance of being prepared at all times to recognise infection and deal with it. Despite the many scientific discoveries and technological advances, such as the advent of antibiotics and the use of sterile techniques, infection continues to be a problem that haunts orthopaedic surgeons and inflicts suffering on patients. The medical community has implemented many practices with the intention of preventing infection and treating it effectively when it occurs. Although high-level evidence may support some of these practices, many are based on little to no scientific foundation. Thus, around the world, there is great variation in practices for the prevention and management of periprosthetic joint infection. This paper summaries the instigation, conduct and findings of a recent International Consensus Meeting on Surgical Site and Periprosthetic Joint Infection. Cite this article: Bone Joint J 2013;95-B:1450-2. PMID:24151261

Parvizi, J; Gehrke, T; Chen, A F

2013-11-01

383

The scintigraphy of sacroiliac joints  

Microsoft Academic Search

The accumulation of99mTc-methylene diphosphonate (99mTc-MDP) and99mTc-dicarboxypropane diphosphonate (99mTc-DPD) in sacroiliac (si) joints was evaluated as a function of imaging time in 22 control patients and 5 patients with sacroiliitis. The controls were injected with either99mTc-DPD or99mTc-MDP (12 and 10 patients, respectively) and the patients with sacroiliitis with both agents within 5 days. Both the anterior and posterior views of the

Tuomo Lantto

1990-01-01

384

Factory-molded cable joints  

SciTech Connect

Until recently, splicing underground transmission cable has been a delicate and time-consuming process. Now, pretested, factory-molded joints for 69-kV to 138 K-V solid-dielectric cables can be assembled quickly on site to yield connections that are as reliable as the cable itself. To produce mechanically and electrically sound splice components, however, it was necessary to extend the design criteria and manufacturing processes (including rubber compounding technology, rubber rheology, and injection molding) beyond the existing state of the art. The Electric Power Research Institute sponsored the research and development. 2 figures.

Tracy, S.; Garcia, F.

1985-06-01

385

Nuevos Destinos: A CD-ROM for Advanced Beginning Spanish  

Microsoft Academic Search

This article provides a description of the Nuevos Destinos CD-ROM, a joint production of McGraw-Hill Publishing Companies, the Annenberg\\/ CPB Project, and WGBH Productions for students learning Spanish at the advanced-beginning, intermediate-low, or native-speaker's level. The CD- ROM, along with four hours of video, is accompanied by the choice of one book for each of these three audiences (advanced beginners,

Robert J. Blake

1999-01-01

386

U.S. Perspectives on the Joint Convention  

SciTech Connect

The Joint Convention on the Safety of Spent Fuel Management and on the Safety of Radioactive Waste Management (Joint Convention) is an international convention, under the auspices of the International Atomic Energy Agency (IAEA). It is a companion to a suite of international conventions on nuclear safety and physical security, which serve to promote a global culture for the safe use of radioactive materials. Although the U.S. was the first nation to sign the Joint Convention on September 29, 1997, the ratification process was a challenging experience for the U.S., in the face of legislative priorities dominated by concerns for national security and threats from terrorism after September 11, 2001. Notwithstanding these prevailing circumstances, the U.S. ratified the Joint Convention in 2003, just prior to the First Review Meeting of the Contracting Parties, and participated fully therein. For the United States, participation as a Contracting Party provides many benefits. These range from working with other Parties to harmonize international approaches to achieve strong and effective nuclear safety programs on a global scale, to stimulating initiatives to improve safety systems within our own domestic programs, to learning about technical innovations by other Parties that can be useful to U.S. licensees, utilities, and industry in managing safety and its associated costs in our waste management activities. The Joint Convention process also provides opportunities to identify future areas of bilateral and multilateral technical and regulatory cooperation with other Parties, as well as an opportunity for U.S. vendors and suppliers to broaden their market to include foreign clients for safety improvement equipment and services. The Joint Convention is consistent with U.S. foreign policy considerations to support, as a priority, the strengthening of the worldwide safety culture in the use of nuclear energy. Because of its many benefits, we believe it is important to take a leadership role in promoting its ratification in the global setting, as well as in more focused regions. At the First Review Meeting of the Contracting Parties, delegations agreed it was highly desirable to have more member states become Contracting Parties. To that end, the United States proposed initiating a Regional Conference Initiative outreach. To launch the Initiative, the U.S. provided Extra-Budgetary contributions to fund conferences, in Africa, the Americans and Southeast Asia. We also provided an expert for each of the conferences to assist in advancing the message to non-member States, in particular developing nations. (authors)

Strosnider, J.; Federline, M.; Camper, L.; Abu-Eid, R.; Gnugnoli, G. [U.S. Nuclear Regulatory Commission, Office of Nuclear Material Safety and Safeguards, Washington, DC, 20555 (United States); Gorn, J. [U.S. Department of State, Office of Nuclear Energy, Safety and Security, Bureau of International Security and Nonproliferation, Washington, DC, 20520 (United States); Bubar, P.; Tonkay, D. [U.S. Department of Energy, Environmental Health/Environmental Management, Washington, DC, 20585 (United States)

2006-07-01

387

Arthroscopic treatment of acromioclavicular joint injuries and results.  

PubMed

Injuries and conditions that affect the AC joint are common. Low-grade separations, degenerative conditions, and osteolysis of the distal clavicle are frequently dealt with by the treating physician. Proper assessment requires a thorough history, examination, and radiologic work-up. An injection of bupivicaine into the AC joint can be a very useful test to evaluate the source of pain about the symptomatic shoulder. Most conditions affecting the AC joint can be treated conservatively, but patients who do not respond to these treatments or athletes who do not wish to modify their activities may require resection of the distal clavicle and the AC joint. Operative intervention can be performed as an open procedure with good results. Recent advances in operative arthroscopic procedures allow us to replicate and exceed the results of the open resection. Arthroscopic resection can be undertaken via a direct approach that does not violate the subacromial space or via an indirect or bursal approach. The indirect approach allows you to assess both the subacromial space and the AC joint because impingement pathology and subacromial compromise are frequently associated with AC change. The advantage of an arthroscopic resection is its ability to be performed as an outpatient procedure with less compromise of musculotendinous structures, shorter rehabilitation, and quicker return to activity. The amount of bone resection necessary is less than with the open procedure because of the ability to preserve the stabilizing properties of the superior AC ligaments. Resection of 4 mm to 8 mm of bone is all that may be required to give uniformly good results. Arthroscopic resection of the distal clavicle is technically demanding and requires skill and familiarity with other arthroscopic shoulder procedures. Complications related to this procedure are relatively infrequent and include infection, residual pain, lack of adequate bone resection, and instability, particularly in patients with previous grade 1 and 2 separations. Less commonly noted is the symptomatic development of heterotopic bone. To the accomplished arthroscopic shoulder surgeon, arthroscopic resection of the symptomatic AC joint gives excellent clinical results that allow a compromised athlete a relatively quick return to desired sport activities. PMID:12825532

Nuber, Gordon W; Bowen, Mark K

2003-04-01

388

Hydrogen damage in friction welded copper joints  

Microsoft Academic Search

The occurrence of hydrogen attack in electrolytic copper and in copper deoxidized with phosphorous, during model heating in oil and in friction welded specimens was investigated. Dissimilar-metal joints, i.e. copper\\/TZM (titanium–zirconium–molybdenum based alloy) joints and copper\\/austenitic steel joints, were subjected to microstructural examinations and tensile strength tests.Microcracks near the weld surface, caused by hydrogen attack, were found to occur in

Andrzej Ambroziak

2010-01-01

389

Subtle injuries to the lisfranc joint.  

PubMed

The tarsometatarsal joint complex is an osseous and capsuloligamentous network that includes the 5 metatarsals, their articulations with the cuneiforms and cuboid, and the Lisfranc ligament, a strong interosseous attachment between the medial cuneiform and second metatarsal. A multitude of injury patterns exist involving the tarsometatarsal joint complex; a Lisfranc injury does not delineate a specific injury, but instead a spectrum of processes involving the tarsometatarsal joint complex. PMID:22050254

Rosenbaum, Andrew; Dellenbaugh, Samuel; Dipreta, John; Uhl, Richard

2011-11-01

390

Anatomy and pathophysiology of the sacroiliac joint  

Microsoft Academic Search

The sacroiliac joint as a source of chronic pain has been a subject of debate for a long period of time. This controversy\\u000a stems from the inherent anatomic location of the sacroiliac joint. Adjacent spinal structures may cause pain to be referred\\u000a to the sacroiliac joint, thus making a precise diagnosis difficult. The most reliable method to establish the diagnosis

Octavio Calvillo; Ioannis Skaribas; Joseph Turnipseed

2000-01-01

391

Joint Line Fullness and Meniscal Pathology  

PubMed Central

Background: Meniscal tears have been associated with meniscal cysts and fullness of the knee joint line on physical examination. Hypothesis: Joint line fullness is an accurate, sensitive, and specific test to detect meniscal tears. Study Design: Prospective cohort study. Methods: One hundred consecutive patients undergoing knee arthroscopy were included. All had physical examinations documenting the presence of joint line fullness, joint line tenderness, and the McMurray sign. Arthroscopy was the gold standard for tears. Accuracy, sensitivity, and specificity were calculated and correlated with type of tear. Sixty-one patients had a magnetic resonance imaging preoperatively (the gold standard for determining the presence of a cyst). Results: Meniscal tears were found in 67 patients at arthroscopy. The accuracy, sensitivity, and specificity of joint line fullness were, respectively, 73%, 70%, and 82% in detecting meniscal tears; 68%, 87%, and 30% for joint line tenderness; and 47%, 32%, and 78% for the McMurray sign. The highest positive predictive value for detecting a tear was 88% for joint line fullness, compared with 77% for joint line tenderness and 76% for the McMurray sign. However, joint line fullness did not correlate well with the presence of a cyst, with a low positive predictive value (29%). Of those patients with joint line fullness on physical examination, 89% had a horizontal cleavage component of their tear at arthroscopy. Conclusion: Joint line fullness is an accurate, sensitive, and specific test to detect meniscal tears. Clinical Relevance: The findings support the routine use of joint line fullness during physical examination along with other common tests to improve the accuracy of clinically diagnosing meniscal tears.

Couture, Jean-Francois; Al-Juhani, Wazzan; Forsythe, Michael E.; Lenczner, Eric; Marien, Robert; Burman, Mark

2012-01-01

392

Experimental architecture of joint remote state preparation  

Microsoft Academic Search

Motivated by some previous joint remote preparation schemes, we first propose some quantum circuits and photon circuits that\\u000a two senders jointly prepare an arbitrary one-qubit state to a remote receiver via GHZ state. Then, by constructing KAK decomposition\\u000a of some transformation in SO(4), one quantum circuit is constructed for jointly preparing an arbitrary two-qubit state to\\u000a the remote receiver. Furthermore,

Ming-Xing Luo; Xiu-Bo Chen; Yi-Xian Yang; Xin-Xin Niu

393

[Joint-preserving surgical options in osteoarthritis].  

PubMed

Joint-preserving surgery aims to correct the mechanical disbalances leading to the inhomogenous load distribution across joint lines, potentially leading to osteoarthritis. The possibilities of axial corrections at the knee have been known for years. A better pathophysiologic understanding of the disbalances leading to coxarthrosis has, more recently, allowed for the development of joint-preserving approaches, for instance in situations of excessive (impingement) or insufficient (dysplastic) femoro-acetabular coverage. On the opposite, in the absence of a mechanical defect, or if osteoarthritis is already present, joint-preserving surgery has little chances of success. PMID:22455151

Peter, R; Christofilopoulos, P

2012-03-14

394

Radiography in joint reconstruction with perichondrial grafts.  

PubMed

The radiographic findings in 13 joints successfully reconstructed with free perichondrial grafts from the rib are reported. Radiography was performed during a period of 13 to 40 months postoperatively. Definite cortical demarcation occurred after 8 to 11 months and had increased 11 to 16 months following surgery. In 3 cases the final examination of 2 metacarpophalangeal joints and one proximal interphalangeal joint was completed with arthrography which demonstrated that the articular surfaces appeared even although the cortical bone contours were somewhat irregular. The extent of the joint spaces largely resembled that in healthy controls. PMID:546078

Wilbrand, H; Engkvist, O

1979-01-01

395

Matched filtering incorporating colored-noise compensation for joint transform correlators  

NASA Astrophysics Data System (ADS)

Optimal recognition of patterns with respect to noise tolerance is obtained when matched filtering is applied with colored-noise compensation, for which input-noise spectral characteristics have to be known in advance. Conventional joint transform correlator systems provide such optimality only when the input noise is white. We propose general means to facilitate colored-noise tolerance by incorporating either a priori or adaptive noise compensation in joint transform correlator-based matched filtering schemes. Adaptive compensation for colored noise may be achieved in real-time operation by estimation of the noise power spectral density distribution from input power spectra information.

Inbar, Hanni; Marom, Emanuel

1995-10-01

396

Magnetorheological technique and application in advanced Intelligent artificial Limb  

Microsoft Academic Search

the research survey of magnetorheological dampers has been introduced in the paper, the mechanics modeling of magnetorheological dampers has been found based on intelligent artificial limb as well as its optimized installation position in artificial limb and the control principles of knee joints. The intelligent following can be carried out by advanced intelligent limb according to the gait of healthy

Fu Li; Xie Hualong; Xu Xinhe; Yu Mei-xiang

2008-01-01

397

Silica suspension and coating developments for Advanced LIGO  

Microsoft Academic Search

The proposed upgrade to the LIGO detectors to form the Advanced LIGO detector system is intended to incorporate a low thermal noise monolithic fused silica final stage test mass suspension based on developments of the GEO 600 suspension design. This will include fused silica suspension elements jointed to fused silica test mass substrates, to which dielectric mirror coatings are applied.

G. Cagnoli; H. Armandula; C. A. Cantley; D. R. M. Crooks; A. Cumming; E. Elliffe; M. M. Fejer; A. M. Gretarsson; G. M. Harry; A. Heptonstall; J. Hough; R. Jones; J.-M. Mackowski; I. Martin; P. Murray; S. D. Penn; M. Perreur-Lloyd; S. Reid; R. Route; S. Rowan; N. A. A. Robertson; P. H. Sneddon; K. A. Strain

2006-01-01

398

Bricklaying Curriculum: Advanced Bricklaying Techniques. Instructional Materials. Revised.  

ERIC Educational Resources Information Center

|This curriculum guide is designed to assist bricklaying instructors in providing performance-based instruction in advanced bricklaying. Included in the first section of the guide are units on customized or architectural masonry units; glass block; sills, lintels, and copings; and control (expansion) joints. The next two units deal with cut,…

Turcotte, Raymond J.; Hendrix, Laborn J.

399

Genomic Advances to Improve Biomass for Biofuels (Genomics and Bioenergy)  

SciTech Connect

Lawrence Berkeley National Lab bioscientist Daniel Rokhsar discusses genomic advances to improve biomass for biofuels. He presented his talk Feb. 11, 2008 in Berkeley, California as part of Berkeley Lab's community lecture series. Rokhsar works with the U.S. Department of Energy's Joint Genome Institute and Berkeley Lab's Genomics Division.

Rokhsar, Daniel

2008-02-11

400

Catalyst durability evaluation for advanced gas turbine engines  

Microsoft Academic Search

Catalytic combustion has demonstrated the ability to provide low NO \\/SUB x\\/ emissions while maintainin high combustion efficiency. Recently, under joint NASA Lewis, EPA, and Acurex sponsorship, a catalytic reactor was tested for 1000 hours to demonstrate durability in combustion environments representative of advanced automotive gas turbine engines. At a 740K air preheat temperature and a propane fuel\\/air ratio of

G. C. Snow; S. L. Pessagno

1982-01-01

401

Advanced maritime communications technology ship-to-shore satellite link  

NASA Astrophysics Data System (ADS)

This report documents the Satellite Link activities of the Advanced Maritime Communications Technology (AMCT) Joint Research and Development Project. The activities are sponsored by the U.S. Maritime Administration and the Military Sealift Command as part of the Fleet Management Technology Program. The successful design, implementation, and testing of a satellite data link are described in detail.

Drissel, R. J.; Miller, J. T.

1983-01-01

402

Recent Advances in Lending to the Poor with Asymmetric Information  

Microsoft Academic Search

Microfinance institutions have successfully extended unsecured small loans to poor and opaque borrowers at the bottom of the economic pyramid. This success is largely due to innovative financial contracts that impose joint liability and create dynamic incentives to mitigate the effects of asymmetric information. Given recent advances in microfinance contracts, there is a need to map the theoretical developments. This

Emilios Galariotis; Christophe Villa; Nurmukhammad Yusupov

2011-01-01

403

Rhizarthrosis fourth grade of eaton with hyperextension of the metacarpophalangeal joint?  

PubMed Central

INTRODUCTION Restoration of thumb function with a painfree, stable, and mobile joint with preserved strength are the main goals of treatment of painful arthritis of the thumb. We present our clinical experience in surgical treatment of this disease, in its highest degree of affectation. PRESENTATION OF CASE A 57-year-old woman presents with a 2-year history of worsening pain at the base of her right, dominant, trapezial-metacarpal (TM) joint. Her thumb metacarpophalangeal (MCP) joint hyperextends 30° with lateral pinch. Radiographs demonstrate Eaton stage IV degenerative changes of her TM joint and no arthritis of her thumb MCP joint. She was successfully treated with a modified Burton–Pellegrini arthroplasty and sesamoidesis to the metacarpal head. DISCUSSION In cases of advanced rhizarthrosis conventional surgery does not serve to correct deformities of the metacarpophalangeal joint that may affect to the postsurgical outcomes. CONCLUSION rhizarthrosis management must be carried out in a global way. When a surgical treatment is planned, all deformities must be taken into account.

Faour-Martin, Omar; Martin-Ferrero, Miguel Angel; Valverde-Garcia, Jose Antonio; Vega-Castrillo, Aurelio; De La Red-Gallego, Maria Angeles

2013-01-01

404

Predictive representation of other people's actions in joint action planning: an EEG study.  

PubMed

It has been postulated that when people engage in joint actions they form internal representations not only of their part of the joint task but of their co-actors' parts of the task as well. However, empirical evidence for this claim is scarce. By means of high-density electroencephalography, this study investigated whether one represents and simulates the action of an interaction partner when planning to perform a joint action. The results showed that joint action planning compared with individual action planning resulted in amplitude modulations of the frontal P3a and parietal P3b event-related potentials, which are associated with stimulus classification, updating of representations, and decision-making. Moreover, there was evidence for anticipatory motor simulation of the partner's action in the amplitude and peak latency of the late, motor part of the Contingent Negative Variation, which was correlated with joint action performance. Our results provide evidence that when people engage in joint tasks, they represent in advance each other's actions in order to facilitate coordination. PMID:22671131

Kourtis, D; Sebanz, N; Knoblich, G

2012-06-06

405

Experimental Investigation of Composite Pressure Vessel Performance and Joint Stiffness for Pyramid and Inverted Pyramid Joints.  

National Technical Information Service (NTIS)

The focus of this study is on the suitability in the application of classical laminate theory analysis tools for filament wound pressure vessels with adhesive laminated joints in particular: pressure vessel wall performance, joint stiffness and failure pr...

J. M. Verhage M. V. Bower

2001-01-01

406

Bolted Joints in Composite Structures: Design, Analysis and Verification. Task II. Test Results--Multifastener Joints.  

National Technical Information Service (NTIS)

Bolted joints are a prime means of load transfer in aircraft components. Compared to other joining techniques, they are reliable and structurally efficient, as well as cost effective. However, bolted joint locations give rise to stress concentrations and ...

E. Tossavainen R. L. Ramkumar

1985-01-01

407

Education for the Talented in Mathematics and Science. A Report of a Joint Conference of the Cooperative Committee on the Teaching of Science and Mathematics of the American Association for the Advancement of Science and the United States Office of Education. Bulletin, 1952, No. 15  

ERIC Educational Resources Information Center

The Cooperative Committee on the Teaching of Science and Mathematics of the American Association for the Advancement of Science that participated in planning for and publishing this bulletin is composed of representatives of seventeen national scientific and mathematical societies including representatives from the associated teaching…

Brown, Kenneth E.; Johnson, Philip G.

1953-01-01

408

Designing bonded joints by means of the JointCalc software  

Microsoft Academic Search

This paper describes the theoretical framework, the experimental background and the software implementation of the computer package JointCalc for the strength analysis and design of adhesively bonded joints. Developed by Henkel AG in collaboration with three Italian Universities, JointCalc was designed to be accessible to non-experts, intuitive for occasional users and also general enough to include most of the joint

E. Dragoni; L. Goglio; F. Kleiner

2010-01-01

409

Temporomandibular joint dysfunction syndrome: a close association with systemic joint laxity (the hypermobile joint syndrome)  

PubMed

Sixty-two patients admitted for elective reconstructive surgery of the temporomandibular joint (TMJ) and eight seen as outpatients with a chief complaint of TMJ dysfunction during the same time interval were evaluated for possible etiologic factors contributing to the disease. All hospitalized patients had severe, end-stage degenerative changes within the TMJ, whereas outpatients had less severe disease and did not require surgery. TMJ dysfunction in some patients was said to be a result of established causes including bruxism, malocclusion, and trauma. No patient in this series had evidence of a systemic inflammatory polyarthritis. Of the 70 patients, 38 (54%) met criteria, based on those of Carter and Wilkinson, as modified by Beighton et al., sufficient to warrant a diagnosis of the hypermobile joint syndrome. Five patients had classic Ehlers-Danlos syndrome and therefore were not patients with "benign hypermobility," and an additional two cases were described as "marfanoid" and as possible Ehlers-Danlos syndrome, respectively. Radiographs showed TMJ hyperextensibility in four hypermobile patients. Long-term surgical outcome was identical in the hypermobile and nonhypermobile groups. The incidence of hypermobility in this series is strikingly higher than the expected incidence in an otherwise population. Magnetic resonance images of the TMJs on separate groups of asymptomatic normal and hypermobile women identified excessive anterior movement in the hypermobile group, together with abnormal anterior disk position in some. We hypothesize that hypermobility within the TMJ may cause accelerated disk destruction and degenerative disease. PMID:1745506

Buckingham, R B; Braun, T; Harinstein, D A; Oral, K; Bauman, D; Bartynski, W; Killian, P J; Bidula, L P

1991-11-01

410

Recent advances in shoulder research.  

PubMed

Shoulder pathology is a growing concern for the aging population, athletes, and laborers. Shoulder osteoarthritis and rotator cuff disease represent the two most common disorders of the shoulder leading to pain, disability, and degeneration. While research in cartilage regeneration has not yet been translated clinically, the field of shoulder arthroplasty has advanced to the point that joint replacement is an excellent and viable option for a number of pathologic conditions in the shoulder. Rotator cuff disease has been a significant focus of research activity in recent years, as clinicians face the challenge of poor tendon healing and irreversible changes associated with rotator cuff arthropathy. Future treatment modalities involving biologics and tissue engineering hold further promise to improve outcomes for patients suffering from shoulder pathologies. PMID:22709417

Killian, Megan L; Cavinatto, Leonardo; Galatz, Leesa M; Thomopoulos, Stavros

2012-06-15

411

Joint Attention in Autism: Teaching Smiling Coordinated with Gaze to Respond to Joint Attention Bids  

ERIC Educational Resources Information Center

Children with autism demonstrate early deficits in joint attention and expressions of affect. Interventions to teach joint attention have addressed gaze behavior, gestures, and vocalizations, but have not specifically taught an expression of positive affect such as smiling that tends to occur during joint attention interactions. Intervention was…

Krstovska-Guerrero, Ivana; Jones, Emily A.

2013-01-01

412

Damage Parameters of Adhesive Joints with General Triaxiality, Part 2: Scarf Joint Analysis  

Microsoft Academic Search

Based on the finite element results presented in part 1 of this paper, scarf joint was chosen for further experimental investigation in order to investigate triaxiality as a function of bondline angle. At laboratory scale, scarf joints can be manufactured relatively easy due to their simple geometry. In part 2 of this paper, scarf joints as well as additional jig\\/fixture

M. M. Abdel Wahab; I. Hilmy; I. A. Ashcroft; A. D. Crocombe

2011-01-01

413

Joint Attention in Autism: Teaching Smiling Coordinated with Gaze to Respond to Joint Attention Bids  

ERIC Educational Resources Information Center

|Children with autism demonstrate early deficits in joint attention and expressions of affect. Interventions to teach joint attention have addressed gaze behavior, gestures, and vocalizations, but have not specifically taught an expression of positive affect such as smiling that tends to occur during joint attention interactions. Intervention was…

Krstovska-Guerrero, Ivana; Jones, Emily A.

2013-01-01

414

Proceedings of the 1982 joint symposium on stationary combustion NO\\/sub x\\/ control. Volume 1. Utility boiler applications. Report for November 1982April 1985  

Microsoft Academic Search

The proceedings document more than 50 papers describing recent advances in NOx control technology that were presented at the 1982 Joint Symposium on Stationary Combustion NOx Control. The papers covered the following topics: utility boiler field experience; NOx regulations; advanced combustion processes; NOx flue gas treatment; limestone injection SOx control; industrial process combustion; industrial, commercial, and residential systems; and fundamental

1985-01-01

415

Information Dominance for the Warfighter: The Present to Year 2025.  

National Technical Information Service (NTIS)

In summary, it is clear that we encounter some difficult challenges as well as some significant opportunities as we enter the next century. Our combat forces will increasingly exploit our information dominance to turn inside an adversary's decision cycle....

P. C. Kaminski

1996-01-01

416

Software Architecture: Managing Design for Achieving Warfighter Capability.  

National Technical Information Service (NTIS)

Software engineers will typically spend 50% or more of the total software development time designing software architecture, and that architecture may provide up to 80% of a modern weapon system's functionality. Increasingly, these systems will operate wit...

B. Naegle

2007-01-01

417

Follow and Support: Toward a More Useful Warfighting Doctrine.  

National Technical Information Service (NTIS)

The purpose of this paper is to answer the question: How should U.S. Army doctrine or the 'follow and support' mission be clarified. This is done by focusing on the evolution of the 'follow and support' concept in the Army's capstone doctrinal manual, Fie...

E. E. Perry

1991-01-01

418

Teaching of Morality in Warfighting in Today's Officer Corps.  

National Technical Information Service (NTIS)

It is the seventh day of the war. The air campaign has not been going well and the enemy has decided to test our ground forces. Between their resilient air defenses, our inadequate intelligence, and the weather, most of the targets attacked by air have su...

J. Swift

2001-01-01

419

Warfighting and Peace Ops: Do Real Soldiers Do MOOTW.  

National Technical Information Service (NTIS)

One major challenge facing the development of doctrine for peace operations is the tension between the principles of war and military operations other than war (MOOTW). This difficulty was addressed by the Army in Field Manual 100-23, Peace Operations, a ...

R. J. Rinaldo

1997-01-01

420

Joint Committee on Atomic Energy  

NSDL National Science Digital Library

From 1946 to 1977, the Joint Committee on Atomic Energy (JAEC) was responsible for making "continuing studies of the activities of the Atomic Energy Commission and of problems relating to the development, use, and control of atomic energy." Over three decades, the Committee looked into peacetime uses of atomic energy, international agreements regarding atomic energy, and various mutual defense agreements. The good people at the Stanford University Libraries & Academic Information Resources (SULAIR) have created this text archive of over 144,000 pages of source materials from the hearings of this committee. Visitors may wish to start with the "About the Collection" area, as it provides a bit more information on the scope of the materials here. After this, visitors are welcome to perform a simple search across the collection, or they may also wish to browse around at their leisure. The site is rounded out by a list of additional sites and resources.

421

Advanced General Dentistry Program Directors' Attitudes and Behaviors Regarding Pediatric Dental Training for Residents  

Microsoft Academic Search

The oral health of children became a more prominent concern with the U.S. surgeon general's report on oral health in America in 2000. The purpose of our study was 1) to assess General Practice Residency (GPR) and Advanced Education in Gen- eral Dentistry (AEGD) (here jointly referred to as advanced general dentistry (AGD) programs) directors' current behaviors with regard to

Christi Sporl Massey; Ted P. Raybould; Judith Skelton; A. Stevens Wrightson; Tim A. Smith

422

PSP: An Advanced Surface-Potential-Based MOSFET Model for Circuit Simulation  

Microsoft Academic Search

This paper describes the latest and most advanced surface-potential-based model jointly developed by The Pennsylvania State University and Philips. Specific topics include model structure, mobility and velocity saturation description, further development and verification of symmetric linearization method, recent advances in the computational techniques for the surface potential, modeling of gate tunneling current, inclusion of the retrograde impurity profile, and noise

Gennady Gildenblat; Xin Li; Weimin Wu; Hailing Wang; Amit Jha; Ronald van Langevelde; G. D. J. Smit; Andries J. Scholten; Dirk B. M. Klaassen

2006-01-01

423

Recent Advances in Polishing of Advanced Materials  

Microsoft Academic Search

This article discusses the recent advances in polishing of advanced materials. Ninety-five journal articles published in 2005–2007 are briefly introduced. The topics are advances in chemical mechanical polishing (CMP), fluids for polishing, modeling of polishing, polishing of brittle materials, robotic polishing, polishing with vibrations or beams, and friction in polishing processes. CMP is perhaps the hottest research topic in the

Z. W. Zhong

2008-01-01

424

SCIENCE BRIEF: ADVANCED CONCEPTS  

EPA Science Inventory

Research on advanced concepts will evaluate and demonstrate the application of innovative infrastructure designs, management procedures and operational approaches. Advanced concepts go beyond simple asset management. The infusion of these advanced concepts into established wastew...

425

Advance Care Planning  

MedlinePLUS

... burden off family and friends. What Is Advance Care Planning? Advance care planning involves learning about the ... change in your health. Medical Research and Advance Care Planning Medical research plays an important role in ...

426

Testing program for Burning Plasma Experiment vacuum vessel bolted joint  

Microsoft Academic Search

As presently designed, the Burning Plasma Experiment vacuum vessel will be segmentally fabricated and assembled by bolted joints in the field. Due to geometry constraints, most of the bolted joints have significant eccentricity, which causes the joint behavior to be sensitive to joint clamping forces. Experience indicates that, as a result of this eccentricity, the joint will tend to open

P. K. Hsueh; M. Z. Khan; J. Swanson; T. Feng; S. Dinkevich; J. Warren

1991-01-01

427

Limited joint mobility in Type I diabetes mellitus  

Microsoft Academic Search

Forty-two of 115 patients with Type I (insulin dependent) diabetes were found to have limited joint mobility affecting mainly the small joints of the hands. The presence of joint abnormalities was related to duration of diabetes. Patients with limited joint mobility had a significantly higher incidence of proliferative retinopathy than patients with normal joint mobility and a similar duration of

Laurence Kennedy; Desmond B. Archer; Sarah L. Campbell; Rosalind Beacom; Dennis J. Carson; Patrick B. Johnston; Charles J. Maguire

1982-01-01

428

Joint Range of Motion in Flaccid Hemiplegia  

Microsoft Academic Search

The effect of muscle tone on passive range of motion (PROM) in affected joints and comparison joints on the unaffected side was investigated in 15 patients with flaccid paralysis hemiplegia. PROM was measured in the shoulder and hip in flexion, extension, abduction, adduction and internal and external rotation using the plastic universal goniometer. PROM in the elbow and knee was

Vimonwan Hiengkaew; Pinit Vittayasoontorn; Pongporn Meenathanin; Anchalee Kaewtong

2003-01-01

429

Shrinkage and peel strength of adhesive joints  

Microsoft Academic Search

A theory for the effect of shrinkage stresses on the peel strength of a joint between rubber and glass is developed. The theory suggests that shrinkage weakens the joint, the weakening becoming more noticeable with rise in shrinkage strain and rubber film thickness. Peeling experiments on a rubber-glass bond verify the theory and justify a discussion of shrinkage in butt

K. Kendall

1973-01-01

430

Long Term Strength of Structural Adhesive Joints  

Microsoft Academic Search

The long term static strength of adhesive joints is analyzed in terms of a modified Prot method and sustained load tests. Data from the failure times under different loading rates are used to predict the static stress that an adhesive joint will withstand for an infinite time, i.e., the endurance limit. Despite theoretical shortcomings, the method is found to give

Armand F. Lewis; Raymond A. Kinmonth; Robert P. Kreahling

1972-01-01

431

The Joint Dissemination Review Panel IDEABOOK.  

ERIC Educational Resources Information Center

The Joint Dissemination Review Panel (JDRP) is a joint USOE-NIE panel which reviews the evidence of effectiveness submitted for a variety of educational products and practices developed through federally supported programs. Studies show that school superintendents and other adopters prefer to initiate changes where there is assurance that benefits…

Tallmadge, G. Kasten

432

Damage assessment in a bolted lap joint  

Microsoft Academic Search

This paper presents an analysis of a bolted lap joint assembly using continuum wave models to examine the scattering of flexural waves across a joint under loss of torque preload. The motivation for this work is derived from monitoring the dynamics of large buildings and bridges to assess the level of damage in bolted or riveted assemblies following a severe

Philip A. Lovell; Darryll J. Pines

1998-01-01

433

Joints on Guadeloupe and their geotectonic significance  

Microsoft Academic Search

The orientations of joints were measured in the region of Guadeloupe (French West Indies) early in 1979. This island consists of a calcareous region (Grande-Terre) and of a volcanic region (Basse-Terre); a group of small islands (Iles des Saintes) to the South is also volcanic. The preferred orientations of the joints were then calculated for each region by the statistical

J. R. Bonneton; A. E. Scheidegger

1981-01-01

434

Joint Vision 2010: Naval Warfare Imperatives.  

National Technical Information Service (NTIS)

This paper is an analysis of Joint Vision 2010 (JV 2010), the recently published guidance for future joint warfare, and its implications on ... From The Sea and Forward... From The Sea, the current naval strategic concept papers. The analysis will identif...

J. Navarro

1997-01-01

435

Strategic Mobility 21 Joint Sea Based Logistics.  

National Technical Information Service (NTIS)

The Joint Deployment and Distribution Support Platform (JDDSP) design concept developed by SM21 includes distribution support for joint sea- based forces in its design and will support many of the to-be requirements. The objective of the SM2l-JDDSP sea ba...

L. G. Mallon

2008-01-01

436

Anatomy and biomechanics of the acromioclavicular joint  

Microsoft Academic Search

Knowledge of the anatomy and biomechanics of the acromioclavicular (AC) joint is important for the orthopaedic surgeon. An understanding of the complex soft tissue and bony relationships in the AC joint is critical to achieving operative success. Failure to protect supporting structures during surgery or neglect of preoperatively damaged ligaments can lead to postoperative failure in procedures addressing the AC

Robb Sellards

2004-01-01

437

Septic arthritis of the acromioclavicular joint  

Microsoft Academic Search

The acromioclavicular joint is rarely the site of septic arthritis. We conducted a retrospective review at our rheumatology department, which identified five cases within the last 6years. All five patients were males, and their mean age was 63years. Risk factors were consistently identified and included intravenous substance abuse, prior joint disease, a recent history of intraarticular injections, and a remote

Marie Bossert; Clément Prati; Ewa Bertolini; Éric Toussirot; Daniel Wendling

2010-01-01

438

Arthroscopic treatment of acute acromioclavicular joint dislocation  

Microsoft Academic Search

An original technique for the treatment of acute acromioclavicular (AC) joint dislocations is proposed. It consists of a closed reduction and stabilization of the AC joint, positioning a cannulated screw between the clavicle and the coracoid under arthroscopic control, without any exposure to x-rays. The conoid and trapezoid ligaments are not sutured or reconstructed. The screw is finally removed under

Paolo R Rolla; Michele F Surace; Luigi Murena

2004-01-01

439

46 CFR 385.38 - Joint funding.  

Code of Federal Regulations, 2012 CFR

...2012-10-01 2012-10-01 false Joint funding. 385.38 Section 385.38 Shipping... General Policies § 385.38 Joint funding. (a) Pursuant to section 10...projects with other Federal agencies in any funding relationship which will serve the...

2012-10-01

440

46 CFR 385.38 - Joint funding.  

Code of Federal Regulations, 2011 CFR

...2011-10-01 2011-10-01 false Joint funding. 385.38 Section 385.38 Shipping... General Policies § 385.38 Joint funding. (a) Pursuant to section 10...projects with other Federal agencies in any funding relationship which will serve the...

2011-10-01

441

Healthcare joint ventures a CFO primer.  

PubMed

Joint ventures can spread costs across the partners and bring in cash. Partners should be chosen carefully, taking into account expertise and resources offered, reputation, and benefits to be gained from the deal. Even after the joint venture is in place, it needs to be monitored regularly. PMID:15524031

Boettiger, John R; Young, Teresa T

2004-10-01

442

Ceramic matrix composite-metal brazed joints  

Microsoft Academic Search

A silicon nitride fibre-reinforced cordierite glass ceramic matrix composite has been brazed to titanium and stainless steel in argon with four different interlayer materials, copper, nickel, tungsten and a metal matrix composite (mmc). Joints were tested in shear and all but one failed in the ceramic composite. The highest strength joint, using a metal matrix interlayer to join cmc to

D. G. Dixon

1995-01-01

443

Development of Premium Joint for Casing.  

National Technical Information Service (NTIS)

Oil and gas wells have been developed under more severe conditions, in terms of pressure, depth and environment. Accordingly demands for premium joints with gas leak-tightness, high joint strength and anti-SSC properties are increasing. In this paper the ...

Y. Yazaki M. Ogasawara M. Tanabe F. Kohyama T. Mimaki

1984-01-01

444

Variability and reliability of joint measurements  

Microsoft Academic Search

The purpose of this study was to determine the varia bility and reliability of joint measurements as carried out by three physician observers. The intratester variation and reliability of nine different joint measurements was determined in eight healthy subjects. The measure ments were taken in eight sessions by each tester. In this population also the intertester variation and relia bility

Alphons M. P. M. Bovens; Marleen A. van Baak; Joseph G. P. M. Vrencken; Joseph A. G. Wijnen; Frans T. J. Verstappen

1990-01-01

445

Molecular monitoring of equine joint homeostasis  

Microsoft Academic Search

Diseases affecting synovial joints are a major cause of chronic disability both in humans and in companion animal species, most notably dogs and horses. As progressive deterioration of the articular cartilage is the hallmark of degenerative joint disease or osteoarthritis, research efforts traditionally tended to focus primarily on cartilage pathology. However, in recent years it has become clear that synovial

Janny C. de Grauw

2011-01-01

446

Improved Modeling of Structural Joint Damping.  

National Technical Information Service (NTIS)

The purpose of this thesis is to develop a better model of damping that occurs in structural joints due to coulomb friction when rotational slip occurs in the joints. A one-dimensional, indirect formulation, of the Boundary Element Method(BEM) is develope...

G. L. Leiker

1986-01-01

447

Joint Operations in the Civil War.  

National Technical Information Service (NTIS)

While the earliest example of jointness in American military history may be the subject of an open debate, two campaigns conducted during the Civil War display characteristics attributed to joint operations today. The capture in 1862 of Fort Henry and For...

S. W. Stucky

1995-01-01

448

Joint Tactical Radio System - Application Programming Interfaces  

Microsoft Academic Search

In April 2007, the Joint Program Executive Office (JPEO) Joint Tactical Radio System (JTRS) released 15 Application Programming Interfaces (APIs) to the Software Communications Architecture (SCA) website L. The release of these APls will allow for the public distribution, implementation, and collaboration with commercial software vendors, universities, and international programs. The APIs contained in this first release provide common API

Cinly Magsombol; Chalena Jimenez; Donald R. Stephens

2007-01-01

449

Joint Tactical Radio System - Enterprise System Engineering  

Microsoft Academic Search

The Joint Tactical Radio System (JTRS) is a core transformational program within the Department of Defense (DoD), critical to extending the Global Information Grid (GIG) to the tactical edge. The Joint Program Executive Office (JPEO) was established in 2005 to manage the development of JTRS. One of the JPEO's assigned responsibilities was to expand the approach to systems engineering across

Richard North; Calvin Vu; Tom Woodland

2007-01-01

450

Deformation of salt rock joints in time  

Microsoft Academic Search

The results are presented for the deformation testing of joints of salt rocks. The tests on shear with compression were conducted at creep and various loading rates. A structural rheological model of the joint deformation is constructed. Basing on the linear heredity theory, the relations are obtained for describing the process of creep and relaxation.

V. A. Asanov; I. L. Pan’kov

2004-01-01

451

Factors affecting construction joint ventures in China  

Microsoft Academic Search

Since the early 1990s, construction joint venture companies have been developing and evolving rapidly in the People's Republic of China. However, entering the Chinese construction market is still seen as exciting but difficult by many foreign contractors and consultants. This research involved a full population survey of 160 Sino–foreign joint venture project based construction companies in four provinces. It investigated

Andrew Gale; Jun Luo

2004-01-01

452

Dynamic joint forces during knee isokinetic exercise  

Microsoft Academic Search

This study analyzed forces in the tibiofemoral and pa tellofemoral joints during isokinetic exercise using an analytical biomechanical model. The results show that isokinetic exercise can produce large loads on these joints, especially during extension exercises. The tibio femoral compressive force (4.0 body weight) is approx imately equal to that obtained during walking but it occurs at 55° of knee

Kenton R. Kaufman; Kai-Nan An; William J. Litchy; Bernard F. Morrey; Edmund Y. S. Chao

1991-01-01

453

High temperature ceramic/metal joint structure  

DOEpatents

A high temperature turbine engine includes a hybrid ceramic/metallic rotor member having ceramic/metal joint structure. The disclosed joint is able to endure higher temperatures than previously possible, and aids in controlling heat transfer in the rotor member.

Boyd, Gary L. (Tempe, AZ)

1991-01-01

454

Tuberculosis of the bones and joints  

SciTech Connect

Bone and joint tuberculosis is common in developing countries, and surgeons in these countries are often faced with the dual problem of diagnosing and treating this disease. However, bone and joint tuberculosis has not yet completely disappeared from industrialized countries, either. This book discusses this issue.

Martini, M.

1988-01-01

455

COMPETING RESEARCH JOINT VENTURES IN PATENT RACES  

Microsoft Academic Search

In the last decay global competition has changed the way companies engage in R&D. Today, even the largest company could not rely on internally generated and financed research projects to compete in the world market. As a result joint research activities have become an increasing important business strategy among oligopolistic firms. Companies use the joint research efforts as new tools

Damiano Bruno SILIPO

456

Ceramic chip scale package solder joint reliability  

Microsoft Academic Search

As part of a programme of characterisation of interconnection technologies for computer server products the present investigation was conducted to determine the attachment integrity and long-term reliability of resistor network ceramic Chip Scale Package (CSP) solder joints. Accelerated thermal cycling with electrical continuity monitoring of the solder joints was used to determine reliability. The thermal cycling was combined with metallographic

J. Seyyedi; J. Padgett

2001-01-01

457

Diagnostic test systems canister weld joint analysis  

Microsoft Academic Search

The Test Systems Section of the Nuclear Test Engineering Division has been developing standard components for its family of canisters. One area of concern in the design has been the weld joints between the main canister channels and the canister endplates. The Solid Mechanics Group of Engineering Mechanics performed numerical calculations on this joint with the SAP4 finite element code

1981-01-01

458

Towards an understanding of joint roughness  

NASA Astrophysics Data System (ADS)

It is argued that the currently available joint models are incapable of accurate predictions of joint shear behaviour without resorting to substantial levels of empiricism. This is because these models fail to adequately quantify joint roughness, or appreciate the importance of scale. A novel approach, which uses fractal geometry to investigate joint roughness, is described. This approach goes beyond describing the “symptoms” of roughness and seeks to find the “cause”. In the application of this approach, the concepts of fractal geometry, fractal dimension and self similarity are described and used as a framework to formulate a statistically based and practical model for the characterisation of rock joint roughness. Important relationships between the fractal dimension and the more useful statistical parameters of standard deviation of both asperity angles and asperity heights are derived. These relationships not only provide a useful, working method for quantifying joint roughness, but are also shown to provide a basis for understanding the Barton empirical JRC-JCS model. In addition, the fractal model is able to provide conceptual models for the effects of normal stress on the shear behaviour of joints and the scale-dependence of joints.

Seidel, J. P.; Haberfield, C. M.

1995-04-01

459

Joint route planning under varying market conditions  

Microsoft Academic Search

Purpose – To provide empirical evidence on the level of savings that can be attained by joint route planning and how these savings depend on specific market characteristics. Design\\/methodology\\/approach – Joint route planning is a measure that companies can take to decrease the costs of their distribution activities. Essentially, this can either be achieved through horizontal cooperation or through outsourcing

Frans Cruijssen; Olli Bräysy; Wout Dullaert; Hein Fleuren; Marc Salomon

2007-01-01

460

Joint Route Planning under Varying Market Conditions  

Microsoft Academic Search

Purpose - To provide empirical evidence on the level of savings that can be attained by joint route planning and how these savings depend on specific market characteristics.Design\\/methodology\\/approach - Joint route planning is a measure that companies can take to decrease the costs of their distribution activities. Essentially, this can either be achieved through horizontal cooperation or through outsourcing distribution

F. C. A. M. Cruijssen; O. Braysy; W. Dullaert; H. A. Fleuren; M. Salomon

2006-01-01

461

Joint Experimentation on Scalable Parallel Processors  

Microsoft Academic Search

The JESPP project exemplifies the ready utility of High Performance computing for large-scale simulations. J9, the Joint Experimentation Program at the US Joint Forces Command, is tasked with ensuring that the United States' armed forces benefit from improvements in doctrine, interoperability, and integration. In order to simulate the future battlespace, J9 must expand the capabilities of its JSAF code along

Robert F. Lucas; Dan M. Davis

2003-01-01

462

Quantum Information Processing Without Joint Measurement  

Microsoft Academic Search

We propose a linear optical scheme for the teleportation of unknown ionic states, the entanglement concentration for nonmaximally entangled states for ions via entanglement swapping and the remote preparation for ionic entangled states. The unique advantage of the scheme is that the joint Bell-state measurement needed in the previous schemes is not needed in the current scheme, i.e. the joint

Ming Yang; Zhuo-Liang Cao

2005-01-01

463

Nondestructive testing of adhesively-bonded joints  

Microsoft Academic Search

One approach to testing the suitability of an adhesive joint for a particular application is to build and test to destruction a representative sample of the joint. In this way the best adhesive and surface treatment for a given application can be found. To reduce the costs of this approach, the designer will wish to call on previous experience with

R. D. Adams; B. W. Drinkwater

1997-01-01

464

Inspection of Fusion Joints in Plastic Pipe  

Microsoft Academic Search

The standard method of joining plastic pipe in the field is the butt fusion process. As in any pipeline application, joint quality greatly affects overall operational safety of the system. Currently no simple, reliable, cost-effective method exists for assessing the quality of fusion joints in the field. Visual examination and pressure testing are current nondestructive approaches, which do not provide

Connie Reichert

2005-01-01

465

Secondary Stresses Caused by Lapped Joints.  

National Technical Information Service (NTIS)

According to tests done on full-scale trusses, trusses with lapped joints are weaker than trusses with all members in the same plane. This is mainly due to the bending moments caused by joint eccentricity. It can be shown by simple analysis that for a sim...

F. R. P. Pienaar

1980-01-01

466

Joint Involvement Associated with Inflammatory Bowel Disease  

Microsoft Academic Search

Joint involvement associated with inflammatory bowel disease (IBD) belongs to the concept of spondyloarthritis (SpA) and includes two types of arthritis: a peripheral arthritis characterized by the presence of pauciarticular asymmetrical arthritis affecting preferentially joints of lower extremities and an axial arthropathy including inflammatory back pain, sacroiliitis and ankylosing spondylitis (AS). Treatment of arthritis includes a short-term use of NSAIDs

M. De Vos

2009-01-01

467

Joint optimization of TCQ-TCM systems  

Microsoft Academic Search

Signal set expansion and set partitioning ideas from trellis coded modulation (TCM) have been previously applied to develop a source coding technique known as trellis coded quantization (TCQ). It has been also known that joint optimization of source and channel encoders\\/decoders results in substantial performance improvement. In this work, we investigate the performance of joint TCQ\\/TCM systems and develop various

H. Arda Aksu; Masoud Salehi

1996-01-01

468

Editorial Next-Generation Digital Earth? A position paper from the Vespucci Initiative for the Advancement of Geographic Information Science  

Microsoft Academic Search

This position paper is the outcome of a joint reflection by a group of international geographic and environmental scientists from government, industry, and academia brought together by the Vespucci Initiative for the Advancement of Geographic Information Science, and the Joint Research Centre of the European Commission. It argues that the vision of Digital Earth put forward by Vice- President Al

Max Craglia; Michael F. Goodchild; Alessandro Annoni; Gilberto Camara

469

Anatomic landmarks for Basal joint injections.  

PubMed

Objective: Basal joint arthritis is a common cause of pain and disability, particularly in elderly women. Corticosteroid injection with splinting provides a reliable long-term relief for patients with mild arthritis. Proper location of the basal joint with anatomic landmarks can facilitate diagnosis and treatment of basal joint arthritis while avoiding inadvertent injury to local structures. The purpose of this study is to identify bony anatomic landmarks for basal joint injections and aid clinicians in avoiding inadvertent injury to surrounding structures on the radial side of the wrist. Methods: Twenty fresh cadaveric wrists were dissected with the aid of loupe magnification. The distal edge of the radial styloid and the palpable dorsal aspect of the thumb metacarpophalangeal joint were used as bony anatomic landmarks for the identification of the basal joint along a longitudinal vector. Measurements of the distance from our anatomic landmarks to the basal joint space were recorded. The locations of the radial artery and the superficial branch of the radial nerve were noted in relation to the borders of the anatomic snuffbox at the basal joint level. Results: The basal joint of the thumb is located 2.44 ± 0.34 cm distal to the distal edge of the radial styloid, and 4.47 ± 0.29 cm proximal to the metacarpophalangeal joint. At the level of the basal joint, the radial artery is found 0.76 ± 0.12 cm dorsal to the extensor pollicis brevis tendon. The first branch of the superficial branch of the radial nerve is volar to the abductor pollicis longus tendon in 84% of the specimens and courses over the abductor pollicis longus tendon in 16%. Conclusion: The basal joint of the thumb is approximately 2.4 cm distal to the radial styloid and 4.5 cm proximal to the metacarpophalangeal joint. Placement of a needle in the basal joint space immediately dorsal to extensor pollicis brevis tendon while applying longitudinal traction on the thumb is more likely to avoid damage to the radial artery and the superficial branch of the radial nerve. PMID:22276223

Hazani, Ron; Engineer, Nitin J; Elston, Josh; Wilhelmi, Bradon J

2012-01-18

470

[Haematogenous infection of a prosthetic joint].  

PubMed

Prosthetic joint infection (PJI) is a major complication after total joint arthroplasty. The most common source of these PJIs is a wound infection immediately after implantation of the artificial joint; however, haematogenous infection is also a common source of PJIs. We describe 3 patients, all suffering from (rheumatoid) arthritis, who presented at the emergency department with a wound on the foot or ankle and a swollen and painful prosthetic knee joint, which was functioning well for a long period of time (6 months to 5 years). All patients had several debridements of their infected total knee arthroplasty with local and systemic antibiotics. Patient outcome was widely diverse: from death to successful treatment. These case descriptions are good examples of the different outcomes from a major complication after a small wound. Care should be taken particularly for wounds around the foot and ankle in patients with a total joint arthroplasty, especially those who also have diabetes, rheumatoid arthritis or are immunocompromised. PMID:23515033

van der Heide, Huub J L; van der Linden, H M J Enrike; Huizinga, Tom W J; Visser, Leo G

2013-01-01

471

A minimal architecture for joint action.  

PubMed

What kinds of processes and representations make joint action possible? In this paper, we suggest a minimal architecture for joint action that focuses on representations, action monitoring and action prediction processes, as well as ways of simplifying coordination. The architecture spells out minimal requirements for an individual agent to engage in a joint action. We discuss existing evidence in support of the architecture as well as open questions that remain to be empirically addressed. In addition, we suggest possible interfaces between the minimal architecture and other approaches to joint action. The minimal architecture has implications for theorising about the emergence of joint action, for human-machine interaction, and for understanding how coordination can be facilitated by exploiting relations between multiple agents' actions and between actions and the environment. PMID:20598504

Vesper, Cordula; Butterfill, Stephen; Knoblich, Günther; Sebanz, Natalie

2010-06-16

472

Temporomandibular joint involvement in ankylosing spondylitis.  

PubMed

Frequency of temporomandibular joint (TMJ) involvement in patients with ankylosing spondylitis (AS) has varied from 4% to 35%. It is more common in men and produces generalised stiffness in involved joints. Clinician should be suspicious of AS when a patient reports with painful restricted movements of joint, neck or back and with no trauma history. Conventional radiographic methods have allowed the demonstration of TMJ abnormalities in patients with AS, but CT is necessary to establish joint space relations and bony morphology. We describe a case of severe AS with TMJ involvement in a 40-year-old female patient and demonstrated TMJ changes on CT. A CT was able to demonstrate articular cartilage changes, disc- and joint abnormalities. Thus, if conventional radiographs in a symptomatic patient with rheumatic diseases are unable to demonstrate changes, CT can provide valuable additional information of the changes in the TMJ. PMID:23645650

Arora, Pallak; Amarnath, Janardhan; Ravindra, Setru Veerabhadrappa; Rallan, Mandeep

2013-05-02

473

[Syringomyelia and associated bone and joint diseases].  

PubMed

Syringomyelia can occur in patients presenting bone and joint diseases of various origins. When joint destruction of the shoulder or elbow produces little pain, a neurological cause might be involved. In this case, the disease history can be of utmost importance because an initial diagnosis of rheumatoid polyarthritis, polyosteoarthritis, or destructive joint disease can be misleading before the syringomyelic origin of the bone and joint disease becomes patent. We report two cases illustrating this association and the diagnostic pitfalls which can delay recognition of the syringomyelia. Better awareness of the prevalence of this condition should be helpful in establishing the diagnosis and in selecting patients who can benefit from neurosurgical treatment. The two cases presented here suggest that syringomyelia could be underdiagnosed in certain patients with an initially atypical presentation. A review of the current knowledge of syringomyelia suggests that arthroplasty is generally not advisable for destroyed dislocated syringomyelic joints. PMID:17534210

Alnot, J-Y; Rossarie, R; Welby, F

2007-05-01

474

MODELING UNDERGROUND STRUCTURE VULNERABILITY IN JOINTED ROCK  

SciTech Connect

The vulnerability of underground structures and openings in deep jointed rock to ground shock attack is of chief concern to military planning and security. Damage and/or loss of stability to a structure in jointed rock, often manifested as brittle failure and accompanied with block movement, can depend significantly on jointed properties, such as spacing, orientation, strength, and block character. We apply a hybrid Discrete Element Method combined with the Smooth Particle Hydrodynamics approach to simulate the MIGHTY NORTH event, a definitive high-explosive test performed on an aluminum lined cylindrical opening in jointed Salem limestone. Representing limestone with discrete elements having elastic-equivalence and explicit brittle tensile behavior and the liner as an elastic-plastic continuum provides good agreement with the experiment and damage obtained with finite-element simulations. Extending the approach to parameter variations shows damage is substantially altered by differences in joint geometry and liner properties.

R. SWIFT; D. STEEDMAN

2001-02-01

475

Advanced Learning Technologies (ALT)  

NSF Publications Database

... Technologies (ALT) Synopsis of Program: Through the Advanced Learning Technologies (ALT) program ... technologies, and (2) advances research in computer science, information technology, learning, and ...

476

Weldability aspects in the design and fabrication of aluminium structures subjected to fatigue loads. Part 2: Weldability of aluminium alloys using advanced MIG and TIG techniques. Effect of the weld bead geometrical factors on the fatigue behavior of the welded joint  

Microsoft Academic Search

The project explored experimentally the weldability of high-strength aluminum alloys and suitable welding techniques. Part 2 of the report will examine welding procedures suitable for high-strength 5xxx (AlMg) and 6xxx (AlSiMg) series aluminum alloys using advanced MIG and TIG techniques and evaluate the weldability of these alloys, as well as the importance of the shape of the weld bead for

Pekka Nevasmaa; Jorma Peltonen; Risto Kuitunen; Klaus Rahka

1993-01-01

477

The shoulder and elbow joints and right and left sides demonstrate similar joint position sense.  

PubMed

ABSTRACT Proper orientation of the shoulder and elbow is necessary for accurate and precise positioning of the hand. The authors' goal was to compare these joints with an active joint position sense task, while also taking into account the effects of joint flexion angle and arm dominance. Fifteen healthy subjects were asked to replicate presented joint angles with a single degree of freedom active positioning protocol. There were no significant differences in angular joint position sense errors with respect to joint (shoulder vs. elbow) and side (left vs. right). However, when considering linear positioning, errors were lower for the elbow, due to a shorter lever arm. Also, as flexion angles increased toward 90°, there was a consistent pattern of lower errors for both joints. PMID:24079516

King, Jacqlyn; Harding, Elizabeth; Karduna, Andrew

2013-09-30

478

Joint shear strength of FRP reinforced concrete beam-column joints  

NASA Astrophysics Data System (ADS)

An assessment of the joint shear strength of exterior concrete beam-column joints reinforced internally with Glass Fibre Reinforced Polymer (GFRP) reinforcements under monotonically increasing load on beams keeping constant load on columns is carried out in this study. Totally eighteen numbers of specimens are cast and tested for different parametric conditions like beam longitudinal reinforcement ratio, concrete strength, column reinforcement ratio, joint aspect ratio and influence of the joint stirrups at the joint. Also finite element analysis is performed to simulate the behaviour of the beam-column joints under various parametric conditions. Based on this study, a modified design equation is proposed for assessing the joint shear strength of the GFRP reinforced beam-column specimens based on the experimental results and the review of the prevailing design equations.

Saravanan, Jagadeesan; Kumaran, Ganapathy

2011-03-01

479

Effects of joint on dynamics of space deployable structure  

NASA Astrophysics Data System (ADS)

Joints are necessary components in large space deployable truss structures which have significant effects on dynamic behavior of these joint dominated structures. Previous researches usually analyzed effects of one or fewer joint characters on dynamics of jointed structures. Effects of joint stiffness, damping, location, number, clearance and contact stiffness on dynamics of jointed structures are systematically analyzed. Cantilever beam model containing linear joints is developed based on finite element method, influence of joint on natural frequencies and mode shapes of the jointed system are analyzed. Analytical results show that frequencies of jointed system decrease dramatically when peak mode shapes occur at joint locations, and there are cusp shapes present in mode shapes. System frequencies increase with joint damping increasing, there are different joint damping to achieve maximum system damping for different joint stiffness. Joint nonlinear force-displacement is described by describing function method, one-DOF model containing nonlinear joints is established to analyze joints freeplay and hysteresis nonlinearities. Analysis results show that nonlinear effects of freeplay and hysteresis make dynamic responses switch from one resonance frequency to another frequency when amplitude exceed demarcation values. Joint contact stiffness determine degree of system nonlinearity, while exciting force level, clearance and slipping force affect amplitude of dynamic response. Dynamic responses of joint dominated deployable truss structure under different sinusoidal exciting force levels are tested. The test results show obvious nonlinear behaviors contributed by joints, dynamic response shifts to lower frequency and higher amplitude as exciting force increasing. The test results are further compared with analytical results, and joint nonlinearity tested is coincident with hysteresis nonlinearity. Analysis method of joint effects on dynamic characteristics of jointed system is proposed, which can be used in optimal design of joint parameters to achieve optimum dynamic performance of jointed system.

Guo, Hongwei; Zhang, Jing; Liu, Rongqiang; Deng, Zongquan

2013-09-01

480

21 CFR 888.3780 - Wrist joint polymer constrained prosthesis.  

Code of Federal Regulations, 2013 CFR

...2013-04-01 false Wrist joint polymer constrained prosthesis. 888.3780...Devices § 888.3780 Wrist joint polymer constrained prosthesis. (a) Identification. A wrist joint polymer constrained prosthesis is a...

2013-04-01

481

49 CFR 234.235 - Insulated rail joints.  

Code of Federal Regulations, 2011 CFR

...2011-10-01 2011-10-01 false Insulated rail joints. 234.235 Section 234.235 Transportation... Maintenance Standards § 234.235 Insulated rail joints. Each insulated rail joint used to separate train detection...

2011-10-01

482

49 CFR 236.59 - Insulated rail joints.  

Code of Federal Regulations, 2012 CFR

...2012-10-01 2012-10-01 false Insulated rail joints. 236.59 Section 236.59 Transportation...Systems Track Circuits § 236.59 Insulated rail joints. Insulated rail joints shall be maintained in condition to...

2012-10-01

483

49 CFR 234.235 - Insulated rail joints.  

Code of Federal Regulations, 2012 CFR

...2012-10-01 2012-10-01 false Insulated rail joints. 234.235 Section 234.235 Transportation... Maintenance Standards § 234.235 Insulated rail joints. Each insulated rail joint used to separate train detection...

2012-10-01

484

49 CFR 236.59 - Insulated rail joints.  

Code of Federal Regulations, 2011 CFR

...2011-10-01 2011-10-01 false Insulated rail joints. 236.59 Section 236.59 Transportation...Systems Track Circuits § 236.59 Insulated rail joints. Insulated rail joints shall be maintained in condition to...

2011-10-01

485

15 CFR 904.107 - Joint and several respondents.  

Code of Federal Regulations, 2013 CFR

...COMMERCE GENERAL REGULATIONS CIVIL PROCEDURES Civil Penalties § 904.107 Joint and several respondents. (a) A NOVA may assess a civil penalty against two or more respondents jointly and severally. Each joint and several respondent is...

2013-01-01

486

30 CFR 18.31 - Enclosures-joints and fastenings.  

Code of Federal Regulations, 2010 CFR

...false Enclosures-joints and fastenings...31 Enclosuresâjoints and fastenings...inch (gage). Castings shall be free from... (2) Welded joints forming an enclosure...of material for flanges and covers 2... 3/16 â³ Cylindrical joints...

2009-07-01

487

30 CFR 18.31 - Enclosures-joints and fastenings.  

Code of Federal Regulations, 2010 CFR

...false Enclosures-joints and fastenings...31 Enclosuresâjoints and fastenings...inch (gage). Castings shall be free from... (2) Welded joints forming an enclosure...of material for flanges and covers 2... 3/16 â³ Cylindrical joints...

2010-07-01

488

30 CFR 18.31 - Enclosures-joints and fastenings.  

Code of Federal Regulations, 2013 CFR

...false Enclosures-joints and fastenings...31 Enclosuresâjoints and fastenings...inch (gage). Castings shall be free from... (2) Welded joints forming an enclosure...of material for flanges and covers 2... 3/16 â³ Cylindrical joints...

2013-07-01

489

49 CFR 1039.21 - International joint through rates.  

Code of Federal Regulations, 2011 CFR

...2011-10-01 2011-10-01 false International joint through rates. 1039.21...REGULATIONS EXEMPTIONS § 1039.21 International joint through rates. Rail carriers...require the filing of tariffs containing international joint through rates. Rail...

2011-10-01

490

Joint nuclear safety research projects between the US and Russian Federation International Nuclear Safety Centers  

SciTech Connect

The Russian Federation Ministry for Atomic Energy (MINATOM) and the US Department of Energy (USDOE) formed international Nuclear Safety Centers in October 1995 and July 1996, respectively, to collaborate on nuclear safety research. Since January 1997, the two centers have initiated the following nine joint research projects: (1) INSC web servers and databases; (2) Material properties measurement and assessment; (3) Coupled codes: Neutronic, thermal-hydraulic, mechanical and other; (4) Severe accident management for Soviet-designed reactors; (5) Transient management and advanced control; (6) Survey of relevant nuclear safety research facilities in the Russian Federation; (8) Advanced structural analysis; and (9) Development of a nuclear safety research and development plan for MINATOM. The joint projects were selected on the basis of recommendations from two groups of experts convened by NEA and from evaluations of safety impact, cost, and deployment potential. The paper summarizes the projects, including the long-term goals, the implementing strategy and some recent accomplishments for each project.

Bougaenko, S.E.; Kraev, A.E. [International Nuclear Safety Center of the Russian MINATOM, Moscow (Russian Federation); Hill, D.L.; Braun, J.C.; Klickman, A.E. [Argonne National Lab., IL (United States). International Nuclear Safety Center

1998-08-01

491

Joint modeling and simulation system  

NASA Astrophysics Data System (ADS)

The defense budget is shrinking. Weapon systems are getting more complex. Test requirements are increasing. The training and war gaming scenarios are getting more demanding as fielded systems and training simulators are integrated to support combined arms training. To cope with these requirements and still stay within the budget, the Department of Defense is relying on modeling and simulation. The state of the modeling and simulation (M&S) art has advanced to the point where a user can now create incredibly realistic, extremely detailed models which can augment test and evaluation, support the acquisition process, enhance training and war gaming, facilitate intelligence gathering, and support detailed engineering.

Boyer, Richard T.; McQuay, William K.

1993-08-01

492

Engineering alloplastic temporomandibular joint replacements.  

PubMed

Temporomandibular disorders (TMD) are part of a heterogeneous group of pathologies that manifest with a constellation of signs and symptoms. They are the most frequent cause of chronic orofacial pain and are prevalent in 12% of the general population. Despite the debilitating nature of these disorders, there is no standardization for treatment of the diseased temporomandibular joint (TMJ). In this review, we present an overview of the functional anatomy of the TMJ and the engineering concepts that must be understood to better understand the indications for surgical management, the types of available treatments and the requirements for reconstruction. A comparison is made of the clinical outcomes with autogenous versus alloplastic reconstruction, including a history of alloplastic materials and the design features of currently available implants. Emphasis is made on material selection, modulus, stiffness, notch sensitivity and modularity. For the treatment of TMD, engineered TMJ alloplastic replacements have had considerable promise with additional room for improvement using new materials and recent design concepts. PMID:22363183

Sinno, Hani; Tahiri, Youssef; Gilardino, Mirko; Bobyn, Dennis

2011-06-01

493

Joint experiments using ETS-5  

NASA Astrophysics Data System (ADS)

An overview of the PARTNERS (Pan-Pacific Regional Telecommunications Network Research Satellite) project, which is the post-mission utilization of the ETS-5 (Engineering Test Satellite-5) is presented. The project was registered at SAFISY (Space Agency Forum for International Space Year) and includes the following experiments: (1) research on radio propagation characteristics in satellite links in Pan-Pacific region; (2) joint study on development of rural satellite network using simple mobile station; (3) experiments on telecommunication using personal computers for academic network; (4) experiments on remote education and training through satellite networks; (5) experiments on remote medicine; (6) experiments on the operation of medical information data base; (7) experiments on transmission of the earth observation data; and (8) demonstration of real time transmission of Asia-Pacific ISY (International Space Year) Conference. The experiment systems consisting of space segment (ETS-5) and simple and low cost ground system composed of 1.2 m aperture parabolic antenna, TV (Television) conference system, and terminal equipment are outlined.

Nakata, Mutsumi

1993-03-01

494

Aksa plans polypropylene joint venture  

SciTech Connect

Turkish acrylic fiber maker Aksa (Yalova), part of the Akkok textile conglomerate, is studying construction of a world-scale polypropylene (PP) plant as part of its diversification plans. The company says it is engaged in discussions with three multinations in the PP business' on the possibility of a joint venture. One of the firms is understood to be Amoco. Aksa is looking at three possible locations for the 100,000 m.t.-150,000 m.t./year plant: Yalova, near Istanbul, where its existing plants are located; Zonguldak, on the Black Sea coast; and within one of the existing complexes or a new site belonging to state-owned Petkim. Aksa has not yet discussed that option with Petkim, which recently received approval to build a $2.5-billion petrochemical complex. The Aksa PP plant would cost about $100 million and would use propylene from world markets. The onstream date depends on Aksa's ability to link up with a foreign partner, but it hopes to complete the unit within three years. Turkey has only one PP plant, a 65,000-m.t./year Petkim unit at Aliaga. The domestic market is currently two to three times that amount and is growing. Petkim also plans a 200,000-m.t./year PP plant as part of its new complex.

Alperowicz, N.

1992-12-02

495

Advanced technical textile products  

Microsoft Academic Search

This article is situated to be successive to “Fibre materials for advanced technical textiles” in the series of “Advanced technical textiles” of Textile Progress. In the previous article, fiber materials used for advanced technical textiles are introduced. In this article, advanced technical textiles products are described according to the application fields of the fiber materials. Although this article does not

Tatsuki Matsuo

2008-01-01

496

Inspection of Fusion Joints in Plastic Pipe  

SciTech Connect

The standard method of joining plastic pipe in the field is the butt fusion process. As in any pipeline application, joint quality greatly affects overall operational safety of the system. Currently no simple, reliable, cost-effective method exists for assessing the quality of fusion joints in the field. Visual examination and pressure testing are current nondestructive approaches, which do not provide any assurance about the long-term pipeline performance. This project developed, demonstrated, and validated an in-situ nondestructive inspection method for butt fusion joints in gas distribution plastic pipelines. The inspection system includes a laser-based image-recognition system that automatically generates and interprets digital images of pipe joints and assigns them a pass/fail rating, which eliminates operator bias in evaluating joint quality. An EWI-patented process, the Weld Zone Inspection Method (WZIM) was developed in which local heat is applied to the joint region to relax the residual stresses formed by the original joining operation, which reveals the surface condition of the joint. In cases where the joint is not formed under optimal conditions, and the intermolecular forces between contacting surfaces are not strong enough, the relaxation of macromolecules in the surface layer causes the material to pull back, revealing a fusion line. If the joint is sound, the bond line image does not develop. To establish initial feasibility of the approach, welds were performed under standard and nonstandard conditions. These welds were subjected to the WZIM and two destructive forms of testing: short-term tensile testing and long-term creep rupture testing. There appears to be a direct correlation between the WZIM and the destructive testing results. Although WZIM appears to be more sensitive than destructive testing can verify, the approach appears valid.

Connie Reichert

2005-09-01

497

A method for assessing joint line shift post knee arthroplasty considering the preoperative joint space.  

PubMed

BACKGROUND: Accurate comparison of outcomes regarding various surgical options in knee arthroplasty can benefit from an improved method for joint line analysis that takes into account the preoperative joint space. METHODS: This article describes a new preoperative-based registration method that measures changes in the joint line by overlaying the 3D models of the bones with implants using preoperative CT along with preoperative and postoperative biplanar radiography. The method was tested on six cadaveric specimens for measuring alteration to the medial and lateral joint lines in extension and flexion. RESULTS: The joint line shift, when measured using the new method, was in the range of -0.2 to 1.3mm on average (SD=1.3 to 3.8mm, for medial and lateral, in flexion and extension positions). This was significantly different (p?0.01) from the results of a previous postoperative-based registration method which did not account for the cartilage thickness in calculating alterations of the joint line (mean=3.9 to 6.8mm, SD=1.2 to 4.3mm). CONCLUSION: These results further highlight the importance of considering the preoperative joint space in analyzing the joint line, and demonstrate the utility of the newly introduced method for accurate assessment of changes in the joint line after arthroplasty. CLINICAL RELEVANCE: The introduced method provides accurate means for investigating joint line alterations in relation to different surgical techniques and the subsequent biomechanical effects after knee arthroplasty. PMID:23608064

Amiri, Shahram; Masri, Bassam A; Anglin, Carolyn; Wilson, David R

2013-04-19

498

PROCEEDINGS: 1985 JOINT SYMPOSIUM ON STATIONARY COMBUSTION NOX CONTROL. VOLUME 2. INDUSTRIAL PROCESSES, FUNDAMENTAL STUDIES, AND SLAGGING COMBUSTORS  

EPA Science Inventory

The two-volume proceedings document is more than 60 papers, describing recent advances in NOx control technology, that were presented at the 1985 Joint Symposium on Stationary Combustion NOx Control, May 6-9, 1985, in Boston, MA. The papers covered the following topics: the statu...

499

Radiology of disorders of the sacroiliac joints  

SciTech Connect

Many disorders can lead to radiological abnormalities of the sacroiliac joints. Some present a characteristic appearance, while others may be diagnosed by analyzing both the appearance and the distribution of findings. Computed tomography provides excellent visualization of the sacroiliac joints and can be helpful in the evaluation of articular disorders as well as pelvic trauma and neoplasms. Radionuclide scanning of bone can also be used to evaluate the sacroiliac joints, particularly if the two sides are compared with the assistance of computer-generated activity counts. This article describes the radiological features of these various disorders that often allow an exact diagnosis to be made.

Resnik, C.S.; Resnick, D.

1985-05-17

500

Damage assessment in a bolted lap joint  

NASA Astrophysics Data System (ADS)

This paper presents an analysis of a bolted lap joint assembly using continuum wave models to examine the scattering of flexural waves across a joint under loss of torque preload. The motivation for this work is derived from monitoring the dynamics of large buildings and bridges to assess the level of damage in bolted or riveted assemblies following a severe loading condition. In the event of such a condition, these joints can loosen or fail completely creating a potentially hazardous environment for the general public while these structures are still in service. It has been suggested that using nondestructive techniques to monitor the health of these bolted connections to determine the extent of damage can minimize such risks to the public. This paper discusses such a health monitoring approach using local mechanical impedance models to characterize the non-linear joint dynamics of a bolted assembly. As the torque on the bolted assembly is varied, the local and global response of a fixed-fixed one- dimensional structure is studied. The loss of torque load is correlated with the changes seen in the local scattering dynamics of the bolted joint. Incoming and outgoing wave dynamics at the joint are separated to compute the frequency dependent local scattering matrix of the joint and determine its affect on the global system response as the torque on the bolted assembly is varied. Analytical results using the continuum wave descriptions of the structural dynamics are compared against experimental data on a beam fixed at both ends with a bolted lap joint located at its center. Using a least squares cost function between experimental and analytical transfer function data, an effective joint stiffness is obtained. Minimizing the cost function leads to an optimal solution for a parameterized model of the joint dynamics and attempts to account for possible non-linearities such as cubic springs, deadband, stiction and hysteresis. Piezoelectric actuators are used to excite the beam in bending. Strain sensor arrays are distributed on both sides of the joint to capture the local scattering properties of the joint as a function of torque load.

Lovell, Philip A.; Pines, Darryll J.

1998-06-01