Workforce Preparation in a Global Context. Occasional Papers 8.

ERIC Educational Resources Information Center

Lasonen, Johanna, Ed.

This document contains 21 papers and an introduction on work force preparation in a global context. The following papers are included: "Introduction" (Johanna Lasonen); "Access of Girls and Women to Vocational Education: Implications for the Workplace in Swaziland" (Comfort B. S. Mndebele); "Intersectoral Approaches to…

Illinois Occupational Skill Standards: Automotive Technician Cluster.

ERIC Educational Resources Information Center

Illinois Occupational Skill Standards and Credentialing Council, Carbondale.

This document, which is intended as a guide for work force preparation program providers, details the Illinois occupational skill standards for programs preparing students for employment in occupations in the automotive technician cluster. The document begins with overviews of the Illinois perspective on occupational skill standards and…

Illinois Occupational Skill Standards: Mechanical Drafting Cluster.

ERIC Educational Resources Information Center

Illinois Occupational Skill Standards and Credentialing Council, Carbondale.

This document, which is intended as a guide for work force preparation program providers, details the Illinois occupational skill standards for programs preparing students for employment in occupations in the mechanical drafting cluster. The document begins with a brief overview of the Illinois perspective on occupational skill standards and…

Illinois Occupational Skill Standards: Occupational Therapy Cluster.

ERIC Educational Resources Information Center

Illinois Occupational Skill Standards and Credentialing Council, Carbondale.

This document, which is intended to serve as a guide for work force preparation program providers, details the Illinois occupational skill standards for programs preparing students for employment in jobs in occupational therapy. Agency partners involved in this project include: the Illinois State board of Education, Illinois Community College…

Illinois Occupational Skill Standards: Agricultural Sales and Marketing Cluster.

ERIC Educational Resources Information Center

Illinois Occupational Skill Standards and Credentialing Council, Carbondale.

This document, which is intended to serve as a guide for work force preparation program providers, details the Illinois occupational skill standards for programs preparing students for employment in jobs in agricultural sales and marketing. Agency partners involved in this project include: the Illinois State Board of Education, Illinois Community…

Illinois Occupational Skill Standards: Architectural Drafting Cluster.

ERIC Educational Resources Information Center

Illinois Occupational Skill Standards and Credentialing Council, Carbondale.

This document, which is intended as a guide for work force preparation program providers, details the Illinois occupational skill standards for programs preparing students for employment in occupations in the architectural drafting cluster. The document begins with a brief overview of the Illinois perspective on occupational skill standards and…

Illinois Occupational Skill Standards: In-Store Retailing Cluster.

ERIC Educational Resources Information Center

Illinois Occupational Skill Standards and Credentialing Council, Carbondale.

This document, which is intended to serve as a guide for work force preparation program providers, details the Illinois occupational skill standards for programs preparing students for employment in occupations in the in-store retailing cluster. The document begins with a brief overview of the Illinois perspective on occupational skill standards…

Illinois Occupational Skill Standards: HVAC/R Technician Cluster.

ERIC Educational Resources Information Center

Illinois Occupational Skill Standards and Credentialing Council, Carbondale.

This document, which is intended to serve as a guide for work force preparation program providers, details the Illinois occupational skill standards for programs preparing students for employment in jobs in the heating, ventilation, air conditioning, and refrigeration (HVAC/R) industry. Agency partners involved in this project include: the…

Illinois Occupational Skill Standards: Finishing and Distribution Cluster.

ERIC Educational Resources Information Center

Illinois Occupational Skill Standards and Credentialing Council, Carbondale.

This document, which is intended as a guide for work force preparation program providers, details the Illinois occupational skill standards for programs preparing students for employment in occupations in the finishing and distribution cluster. The document begins with a brief overview of the Illinois perspective on occupational skill standards…

Illinois Occupational Skill Standards: Plastics Molding Cluster.

ERIC Educational Resources Information Center

Illinois Occupational Skill Standards and Credentialing Council, Carbondale.

This document, which is intended to serve as a guide for work force preparation program providers, details the Illinois occupational skill standards for programs preparing students for employment in jobs in the plastics molding industry. Agency partners involved in this project include: the Illinois State Board of Education, Illinois Community…

Illinois Occupational Skill Standards: Imaging/Pre-Press Cluster.

ERIC Educational Resources Information Center

Illinois Occupational Skill Standards and Credentialing Council, Carbondale.

This document, which is intended as a guide for work force preparation program providers, details the Illinois occupational skill standards for programs preparing students for employment in occupations in the imaging/pre-press cluster. The document begins with a brief overview of the Illinois perspective on occupational skill standards and…

Work and Family: How Managers Can Make a Difference.

ERIC Educational Resources Information Center

Collins, Ray; Magid, Renee Y.

1990-01-01

The work-family audit is a framework for employer planning of work-family policies and programs. The audit identifies key aspects of the labor force and community. Steps are identifying options, specifying objectives, planning for implementation, stating outcomes and benefits, and preparing to measure costs and benefits. (SK)

The Directory of Special Opportunities for Women: A National Guide of Educational Opportunities, Career Information, Networks, and Peer Counseling Assistance for Entry or Reentry into the Work Force.

ERIC Educational Resources Information Center

Doss, Martha Merrill, Ed.

This directory is designed to be a source for research and help to women preparing for careers or for entry or reentry into the work force. Section One is an alphabetical listing of national organizations, associations, programs, and government agencies. Section Two is divided by State; resources cited here are listed numerically by zip code so…

AFTOMS Technology Issues and Alternatives Report

DOT National Transportation Integrated Search

1989-12-01

This report was prepared to document the findings from the Proof of Concept (POC) work done in FY89 and the early part of FY90 on the US Air Force Technical Order Management System (AFTOMS) project. Objectives of the POC work were: Further developmen...

SUNY 2000. College Expectations: The Report of the SUNY Task Force on College Entry-Level Knowledge and Skills.

ERIC Educational Resources Information Center

State Univ. of New York, Albany. Office of the Chancellor.

This document reports on the work of a task force charged with formulating recommendations on the kind of preparation an incoming student should have to assure successful entry to and completion of the freshman year of study at the State University of New York (SUNY). In addition, the task force was asked to specify what program of study and forms…

Aging and the Work Force: Human Resource Strategies. An Information Paper Prepared for Use by the Special Committee on Aging. United States Senate, Ninety-Seventh Congress, Second Session.

ERIC Educational Resources Information Center

Congress of the U.S., Washington, DC. Senate Special Committee on Aging.

This information paper explores the need for age-neutral functional criteria in the human resources management system and the need for managers to review currently accepted employment policies. Population patterns, labor force profiles, and labor force projections are reviewed. The paper examines the effect of retirement policies and considers…

WorkReady Philadelphia: Preparing Youth for Job Readiness

ERIC Educational Resources Information Center

Pawlowski, Brett

2010-01-01

One of the great concerns of the business community involves the workforce pipeline: employers want to be sure that new entries into the labor pool, whether from the K-12 or postsecondary systems, are prepared for the jobs that await them. In Philadelphia, business and community leaders have joined forces to give students workplace learning…

White House Conference on Families: Work and Families.

ERIC Educational Resources Information Center

J.C. Penney Co., Inc., New York, NY.

This report on the White House Conference on Families (WHCF) was prepared by the J.C. Penney Company for corporate leaders. Background information on the WHCF, issues related to families and work, a depiction of the changing work force, and policy recommendations are included in the report. Recommendations focus on flextime, flexible leave…

Officer Education: Preparing Leaders for the Air Force of 2035

DTIC Science & Technology

2009-02-15

Environment (JOE) 2008: Challenges and Implications for the Future Joint Force”, https://us.jfcom.mil/sites/ J5 /j59/default.aspx., 23. 6 The world...capabilities might be utilized in their work Unrestricted Warfare. In this book, “ Hacking into websites, targeting financial institutions, terrorism...Forces Command. “Joint Operating Environment: Challenges and Implications for the Future Joint Force.” https://us.jfcom.mil/sites/ J5 /j59

Significance of Marketing Practices for Work Force Preparation. National Marketing Education Research Conference (Key West, Florida, May 19-21, 1995).

ERIC Educational Resources Information Center

University of West Florida, Pensacola.

The following papers are included: "Concepts on Marketing Issues in the Czech Republic" (Anne Mills); "Requiring More of Teacher Preparation: Authentic Assessment as a Vehicle to Reform" (Laura J. Wyant); "A Delphi Study of Professional Competencies for the Secondary Marketing Educator" (Trellys A. Morris); "The…

Defense Standardization Program Journal, April/Jun 2007

DTIC Science & Technology

2007-06-01

Delivers Far-Reaching Standardization 9 Air Force Cyber Warfare Training 14 DMSMS Working Group Reaches Out to Programs 18 An Effects-Based Metrics...defend- ers their first 10 cyber warfare combat "sorties" and prepared them for net- work crew positions. Four MAJCOMs participated in BD 2002.The Air

Public Health Education in Florida.

ERIC Educational Resources Information Center

Florida State Dept. of Education, Tallahassee.

This report documents issues related to the work of the Florida Comprehensive Health Professions Education Plan. Public health education prepares students for initial employment or advancement in a number of positions. While the public health work force is primarily employed in various units in local, state, and federal governments, industry also…

A novel platform for in vitro analysis of torque, forces, and three-dimensional file displacements during root canal preparations: application to ProTaper rotary files.

PubMed

Diop, Amadou; Maurel, Nathalie; Oiknine, Michel; Patoor, Etienne; Machtou, Pierre

2009-04-01

We proposed a new testing setup and in vitro experimental procedure allowing the analysis of the forces, torque, and file displacements during the preparation of root canals using nickel-titanium rotary endodontic files. We applied it to the preparation of 20 fresh frozen cadaveric teeth using ProTaper files (Dentsply Maillefer, Ballaigues, Switzerland), according to a clinically used sequence. During the preparations, a clinical hand motion was performed by an endodontist, and we measured the applied torque around the file axis and also the involved three-dimensional forces and 3-dimensional file displacements. Such a biomechanical procedure is useful to better understand the working conditions of the files in terms of loads and displacements. It could be used to analyze the effects of various mechanical and geometric parameters on the files' behavior and to get data for modelling purposes. Finally, it could contribute to studies aiming to improve files design in order to reduce the risks of file fractures.

Analysis of mechanical preparations in extracted teeth using ProTaper rotary instruments: value of the safety quotient.

PubMed

Blum, J Y; Machtou, P; Ruddle, C; Micallef, J P

2003-09-01

The purpose of this study was to apply the Endographe to analyze the vertical forces and torque developed during mechanical preparations in extracted teeth. The data collected in this study may be used to calculate the safety quotient (SQ) as proposed by J.T. McSpadden. The SQ formula is defined as the torque required to break a file at D3 divided by the mean working torque required to cut dentin. The Endographe is a unique force-analyzer device equipped to measure, record, and generate graphs of the vertical forces and torque exerted during root canal preparation. All preparations were performed by endodontists in roots with narrow, more restrictive canals, larger, more open canals, or in roots sectioned in two halves. All canals, including the sectioned canals, were prepared with ProTaper files in accordance with the manufacturer's guidelines for use. For narrow canals, the mean values of the generated vertical forces (g) and torque (g.cm) varied from 80 (+/- 20) g (SX) to 232 (+/- 60) g (F2) and from 80 (+/- 24) g x cm (F1) to 150 (+/- 45) g x cm (S2), respectively. For large canals, the mean values of the generated vertical forces (g) and torque (g x cm) varied from 80 (+/- 20) g (SX) to 340 (+/- 20) g (F1) and from 31 (+/- 9) g x cm (S2) to 96 (+/- 35) g x cm (SX), respectively. The SQ varied from 0.93 to 7.95 for narrow canals and from 1.58 to 14.50 for large canals. The SQ is intended to provide values that can be analyzed to predict whether a rotary file will have a tendency to break or will work safely during clinical use. However, if the formula is going to provide useful information, it must index the "rotation to failure torque" with the "mean working torque" at a specific location along the cutting blades of a file. Additionally, this mathematical formula does not account for factors such as the concentration of forces, the way the instruments are used, or the wear of the instruments. A precise protocol for canal preparation should emphasize using small flexible stainless steel hand files to create or verify that within any portion of a root canal there is sufficient space for rotary instruments to follow. When there is a confirmed smooth, reproducible glide path, then a "secured" space exists to safely guide the more flexible terminal extent of a rotary NiTi file. Endogrammes provide an innovative approach to the analysis of mechanical preparations and suggest that the ProTaper shaping files are best used with lateral forces to decrease the coronal screwing effect. The ProTaper finishing files should be used with slow penetration and be introduced only into canals that have a confirmed smooth and reproducible glide path. When any part of the overall length of a canal has been secured, then the number of instruments, the time spent utilizing each instrument, and the overall time progressing through a sequence of instruments to shape this region of the canal is reduced.

Valuing our differences. How to manage a culturally diverse work force.

PubMed

Veninga, R L

1994-12-01

How can we become aware of cultural blind spots that keep us from understanding one another? To adequately prepare for the new work force, healthcare organizations must establish work force diversity goals. Of course, goals by themselves will not empower minority workers. And if goals are perceived as "window dressing," resentment builds. Most organizations claim their hiring practices are not biased. One way to ensure that your hiring practices are unbiased is to ask important questions: Does the ethnic makeup of our work force resemble that of the community? If not, what can be done to strengthen our affirmative action programs? In a multicultural work force, misunderstandings are bound to arise because human behavior is conditioned by cultural factors. One way for an organization to identify problems that are culturally based is for supervisors and subordinates to meet informally to ensure that the organization is maximizing the minority worker's talents. Climate surveys and exit interviews are two other frequently used methods. Cultural diversity training programs can also make a difference in an organization. Some training programs help participants learn how culture influences the way we communicate. Knowledge of the cultural basis of how we interact is one factor in building bridges of understanding.

College and Career Ready: Preparing Students in Fitness and Health Literacy

ERIC Educational Resources Information Center

Buskist, Connie; Reilly, Erin; Walker, Andria; Bourke, Nicholas

2016-01-01

The Common Core State Standards (CCSS) for English language arts have been adopted by many states across the country in an effort to prepare students for life after high school, whether that be going to college or joining the work force. The anchor standards of the CCSS, known as the College and Career Ready Standards, describe the literacy skills…

Preparing Public Relations and Advertising Students for the 21st Century: A Case Study.

ERIC Educational Resources Information Center

Carroll, Robert A.

In 1993, the Task Force on Integrated Communications reported that public relations and advertising students would better be prepared to enter a changing communications industry through an "integrated" curriculum. This paper is a case study of how one university has attempted to meet that challenge. The work has resulted in the development of an…

The Education Deficit. A Staff Report Summarizing the Hearing on "Competitiveness and the Quality of the American Work Force," Prepared for the Use of the Subcommittee on Education and Health of the Joint Economic Committee. Congress of the United States, 101st Congress, First Session, December 14, 1988.

ERIC Educational Resources Information Center

Joint Economic Committee, Washington, DC.

This staff report summarizes testimony on competitiveness and the quality of the American work force. The testimony was received during 9 days of hearings held between September 23 and December 3, 1987, that featured 52 witnesses including federal and state officials, educators, business and labor leaders, and scholars. Contents comprise prepared…

75 FR 78676 - Proposed Information Collection; Comment Request; Current Population Survey (CPS) Basic...

Federal Register 2010, 2011, 2012, 2013, 2014

2010-12-16

... age, marital status, gender, Armed Forces status, education, race, origin, and family income. We use... sponsor the basic monthly survey. The Census Bureau also prepares and conducts all the field work. At the.... Some of the information within that portion includes employment status, number of hours worked, job...

78 FR 77646 - Proposed Information Collection; Comment Request; Current Population Survey (CPS) Basic...

Federal Register 2010, 2011, 2012, 2013, 2014

2013-12-24

... age, marital status, gender, Armed Forces status, education, race, origin, and family income. We use... sponsor the basic monthly survey. The Census Bureau also prepares and conducts all the field work. At the.... Some of the information within that portion includes employment status, number of hours worked, job...

20 CFR 628.100 - Scope and purpose of part 628.

Code of Federal Regulations, 2012 CFR

2012-04-01

... exposure to the world of work, to enhance the basic education skills of youth, to encourage school..., respectively. (b) Title II-A Adult Training programs are to prepare adults for participation in the labor force... successful transition from school to work, to apprenticeship, to the military or to postsecondary education...

20 CFR 628.100 - Scope and purpose of part 628.

Code of Federal Regulations, 2011 CFR

2011-04-01

... exposure to the world of work, to enhance the basic education skills of youth, to encourage school..., respectively. (b) Title II-A Adult Training programs are to prepare adults for participation in the labor force... successful transition from school to work, to apprenticeship, to the military or to postsecondary education...

Countdown 2000: Michigan's Action Plan for a Competitive Workforce. Prepared by the Governor's Cabinet Council on Human Investment, Adult Literacy Task Force.

ERIC Educational Resources Information Center

Michigan Governor's Office, Lansing.

Although Michigan has one of the best trained work forces in the nation, the skill gap between what the marketplace needs and what its workers can offer is continuing to widen. Michigan must develop an adult training and education system that is customer driven and customer sensitive, emphasizes shared responsibility of stakeholders, empowers…

Critical Professional Issues in Labour Force Development for Teachers with Children up to Two Years of Age: A New Zealand Perspective

ERIC Educational Resources Information Center

Rockel, Jean

2014-01-01

This paper critically examines current concerns regarding professional issues in labour force development for teachers with children up to two years of age (UtoT). The concerns in New Zealand (NZ) relate to whether initial teacher-education (ITE) qualifications prepare teachers to work with children UtoT, involving synergy between ITE and the…

Working Americans: Equality at Any Age. Hearing before the Special Committee on Aging, United States Senate, Ninety-Ninth Congress, Second Session.

ERIC Educational Resources Information Center

Congress of the U.S., Washington, DC. Senate Special Committee on Aging.

This report of a congressional hearing focuses on the Age Discrimination in Employment Act (ADEA), which permits forced retirement of American workers solely on the basis of age, that is, mandatory retirement at age 70. Testimony includes statements and prepared statements from a United States Representative, individuals who have been forced to…

Special Operations Forces Reference Manual. Fourth Edition

DTIC Science & Technology

2015-06-01

Special Operations Forces Reference Manual Fourth Edition The JSOU Press MacDill AFB, Florida June 2015 Prepared by Joint Special Operations...other national and international security decision-makers, both military and civilian, through teaching, outreach, and research in the science and art...Luke First Edition, June 2005 (Revised July 2006) Second Edition, August 2008 Third Edition, September 2011 Fourth Edition, June 2015 This work was

Hearings on Reform of the U.S. Workforce Preparation System. Hearings before the Subcommittee on Postsecondary Education, Training, and Life-Long Learning of the Committee on Economic and Educational Opportunities, House of Representatives, One Hundred Fourth Congress, First Session (February 6-7, 1995).

ERIC Educational Resources Information Center

Congress of the U.S., Washington, DC. House Committee on Economic and Educational Opportunities.

This publication presents two hearings on how to establish and maintain a streamlined, top quality, and efficient system of work force preparation in the United States and the role of the federal government in developing such a system. Testimony consists of statements and prepared statements, letters, and supplemental materials from individuals…

The Role of the School District toward Preparing Students for the 21st Century

ERIC Educational Resources Information Center

Aguilar-Torres, Gloria

2010-01-01

This dissertation reflects the outcomes of a small school district that is successfully incorporating 21st century skills with the demands set forth by our current educational policy, No Child Left Behind. Considerations regarding globalization, future work force and work skills, definition of 21st century skills, supporting 21st century skills in…

Further Mothering: Reconceptualizing White Women Educators' Work with Black Youth

ERIC Educational Resources Information Center

Brockenbrough, Ed

2014-01-01

As the percentage of youth of color in the nation's public schools continues to increase, so, too, does the urgency of preparing a predominantly white, female, middle class teaching force to work with racially and culturally diverse youth. Drawing upon an ethnographic study of an urban, youth-serving HIV/AIDS prevention and supports center, this…

Enhanced Management Consulting.

DTIC Science & Technology

1983-07-01

HD-AI33 278 ENHANCED MANAGEMENT CONSULTING(U) LEADERSHIP AND 1/i MANAGEMENT DEVELOPMENT CENTER MAXWELL AFB RL V L KRPINOS JUL 83 LMDC-TR-83-2...83 12 035 Maxwell Air Force Base, Alabama 36112 LMDC-TR-83-2 Technical Reports prepared by the Leadership and Management Development Center (LMDC...Directorate of Research and Analysis AREA 6 WORK UNIT NUMBERS Leadership and Management Development Center (AU) Maxwell Air Force Base, Alabama 36112 II

Success in the Works: A Profile of Canada's Emerging Workforce = Le nouveau mode d'emploi: Profil de la croissance du marche du travail.

ERIC Educational Resources Information Center

Canada Employment and Immigration Commission, Ottawa (Ontario).

This study, in English and French, analyzes the trends emerging in labor demand and supply in Canada, and examines the challenges to preparing an adequately trained and prepared workforce. The economy and the labor force seem to be developing along divergent paths, creating a potential gap between the flexibility and skills of workers and the…

Power system restoration - A task force report

DOE Office of Scientific and Technical Information (OSTI.GOV)

Adibi, M.; Clelland, P.; Fink, L.

1986-01-01

The IEEE PES System Operation Subcommittee has established the Power System Restoration Task Force to: review operating practices, conduct a literature search, prepare relevant glossaries and bibliographies, and promote information exchange through technical papers. This is the first report of the Task Force. The problem of bulk power system restoration following a complete or partial collapse is practically as old as the electric utility industry itself. Many electric utilities have developed over the years system restoration schemes that meet the needs of their particular systems. These plans provide a great deal of insight into how the restorative process is viewedmore » by operating and planning personnel and what concerns and constraints any plan must operate under. The body of the report consists of notes prepared by members of the Task Force. It should not be interred that a complete reporting on Power System Restoration is undertaken here. The intent is to report upon work of the Task Force to date. The report also reviews several different restoration plans and shows their common concerns and constraints.« less

The thickness correction of sol-gel coating using ion-beam etching in the preparation of antireflection coating

NASA Astrophysics Data System (ADS)

Dong, Siyu; Xie, Lingyun; He, Tao; Jiao, Hongfei; Bao, Ganghua; Zhang, Jinlong; Wang, Zhanshan; Cheng, Xinbin

2017-09-01

For the sol-gel method, it is still challenging to achieve excellent spectral performance when preparing antireflection (AR) coating by this way. The difficulty lies in controlling the film thickness accurately. To correct the thickness error of sol-gel coating, a hybrid approach that combined conventional sol-gel process with ion-beam etching technology was proposed in this work. The etching rate was carefully adjusted and calibrated to a relatively low value for removing the redundant material. Using atomic force microscope (AFM), it has been demonstrated that film surface morphology will not be changed in this process. After correcting the thickness error, an AR coating working at 1064 nm was prepared with transmittance higher than 99.5%.

Defense Finance and Accounting Service Work on the FY 1993 Air Force Defense Business Operations Fund Financial Statements

DTIC Science & Technology

1995-01-11

the accuracy of financial data, the adequacy of internal controls, and compliance with laws and regulations. We also evaluated procedures that the DFAS Denver Center used to prepare consolidated financial statements .

Changes in the Nature and Structure of Work: Implications for Employer-Sponsored Training.

ERIC Educational Resources Information Center

Bailey, Thomas

Profound changes in the economy and the labor market have an effect on the role of employer-sponsored training in preparing and educating the country's work force. On the demand side of the labor market, these changes include the increase in international trade, the changing economic status of the United States relative to its trading partners,…

The Opposing Forces that Shape Developmental Education: Assessment, Placement, and Progression at CUNY Community Colleges. CCRC Working Paper No. 36

ERIC Educational Resources Information Center

Jaggars, Shanna Smith; Hodara, Michelle

2011-01-01

The developmental education process, as it is typically implemented in colleges across the country, seems straightforward: underprepared students are assessed and placed into an appropriate developmental course sequence designed to prepare them for college-level work; once finished with the sequence, these students presumably then move on to…

Gender Equity in Vocational Education. Trends and Issues Alerts.

ERIC Educational Resources Information Center

Kerka, Sandra

Women now represent 45% of the work force, and 74% of all 25- to 54-year-old women now work. Despite these statistics, women are still clustered in 20 of 400 occupational categories, and 70% of female secondary vocational students are preparing for low-wage jobs. These statistics, coupled with the findings of research on self-esteem and identity…

Dynamics and statics of nonaxisymmetric liquid bridges

NASA Technical Reports Server (NTRS)

Alexander, J. Iwan D.; Resnick, Andy; Zhang, Yiqiang; Fedoseyev, A.

1994-01-01

We finished the construction of the experimental apparatus and the design and testing of some of the visualization and data acquisition techniques. Experimental work focused on three areas: force measurements, loss of stability to nonaxisymmetric bridges, and vibration behavior. The experimental work is summarized in section 2. Selected results from our force measurement experiments are outlined in section 3. In addition we worked on the theory of the dynamic stability of axisymmetric bridges and undertook numerical simulation of the effects of inclined gravity vectors on the minimum volume stability limit for static bridges. The results and status of our theoretical work and numerical simulation are described in section 4. Papers published and in preparation, conference presentations, etc., are described in section 5. Work planned for the third year is discussed in section 6. References cited in the report are listed in section 7.

Satisfaction with civilian family medicine residency training: Perspectives from serving general duty medical officers in the Canadian Armed Forces.

PubMed

Wolfrom, Brent; Hodgetts, Geoff; Kotecha, Jyoti; Pollock, Emily; Martin, Mary; Han, Han; Morissette, Pierre

2016-09-01

To evaluate satisfaction with civilian residency training programs among serving general duty medical officers within the Canadian Armed Forces. A 23-item, cross-sectional survey face-validated by the office of the Surgeon General of the Canadian Armed Forces. Canada. General duty medical officers serving in the Canadian Armed Forces as of February 2014 identified through the Directorate of Health Services Personnel of the Canadian Forces Health Services Group Headquarters. Satisfaction with and time spent in 7 domains of training: trauma, critical care, emergency medicine, psychiatry, occupational health, sports medicine, and base clinic training. Overall preparedness for leading a health care team, caring for a military population, working in isolated and challenging environments, and being deployed were evaluated on a 5-point Likert scale. Among the survey respondents (n = 135, response rate 54%), 77% agreed or strongly agreed that their family medicine residency training was relevant to their role as a general duty medical officer. Most respondents were either satisfied or very satisfied with their emergency medicine training (77%) and psychiatry training (63%), while fewer were satisfied or very satisfied with their sports medicine (47%), base clinic (41%), and critical care (43%) training. Even fewer respondents were satisfied or very satisfied with their trauma (26%) and occupational health (12%) training. Regarding overall preparedness, 57% believed that they were adequately prepared to care for a military patient population, and 52% of respondents believed they were prepared for their first posting. Fewer respondents (38%) believed they were prepared to work in isolated, austere, or challenging environments, and even fewer (32%) believed that residency training prepared them to lead a health care team. General duty medical officers were satisfied with many aspects of their family medicine residency training; however, military-specific areas for improvement were identified. Many of these areas might be addressed within the context of a 2-year residency program without risking the generalist nature of family medicine training. These findings provide valuable data for residency programs that accept military trainees across the country. Copyright© the College of Family Physicians of Canada.

Evaluation of polyvinyl alcohols as mucoadhesive polymers for mucoadhesive buccal tablets prepared by direct compression.

PubMed

Ikeuchi-Takahashi, Yuri; Ishihara, Chizuko; Onishi, Hiraku

2017-09-01

The purpose of the present work was to evaluate polyvinyl alcohols (PVAs) as a mucoadhesive polymer for mucoadhesive buccal tablets prepared by direct compression. Various polymerization degree and particle diameter PVAs were investigated for their usability. The tensile strength, in vitro adhesive force, and water absorption properties of the tablets were determined to compare the various PVAs. The highest values of the tensile strength and the in vitro adhesive force were observed for PVAs with a medium viscosity and small particle size. The optimal PVA was identified by a factorial design analysis. Mucoadhesive tablets containing the optimal PVA were compared with carboxyvinyl polymer and hydroxypropyl cellulose formulations. The optimal PVA gives a high adhesive force, has a low viscosity, and resulted in relatively rapid drug release. Formulations containing carboxyvinyl polymer had high tensile strengths but short disintegration times. Higher hydroxypropyl cellulose concentration formulations had good adhesion forces and very long disintegration times. We identified the optimal characteristics of PVA, and the usefulness of mucoadhesive buccal tablets containing this PVA was suggested from their formulation properties.

Adhesion switch on a gecko-foot inspired smart nanocupule surface

NASA Astrophysics Data System (ADS)

Song, Wenlong

2014-10-01

A gecko-foot inspired nanocupule surface prepared by an AAO template covering method was composed of poly(N-isopropylacrylamide) and polystyrene blend. Both superhydrophobicity and high adhesion force were exhibited on the PNIPAm/PS film at room temperature. Moreover, by controlling the temperature, the wettability of the film could be switched between 138.1 +/- 5.5° and 150.6 +/- 1.5°, and the adhesion force could also be correspondingly tuned accurately by temperature. This reversibility in both wettability and adhesion force could be used to construct smart devices for fine selection of water droplets. The proof-of-concept was demonstrated by the selective catching of precise weight controlled water droplets at different temperatures. This work could help us to design new type of devices for blood bioanalysis or lossless drug transportation.A gecko-foot inspired nanocupule surface prepared by an AAO template covering method was composed of poly(N-isopropylacrylamide) and polystyrene blend. Both superhydrophobicity and high adhesion force were exhibited on the PNIPAm/PS film at room temperature. Moreover, by controlling the temperature, the wettability of the film could be switched between 138.1 +/- 5.5° and 150.6 +/- 1.5°, and the adhesion force could also be correspondingly tuned accurately by temperature. This reversibility in both wettability and adhesion force could be used to construct smart devices for fine selection of water droplets. The proof-of-concept was demonstrated by the selective catching of precise weight controlled water droplets at different temperatures. This work could help us to design new type of devices for blood bioanalysis or lossless drug transportation. Electronic supplementary information (ESI) available. See DOI: 10.1039/c4nr04090b

Risks of musculoskeletal disorders among betel quid preparers in Taiwan.

PubMed

Chang, Jer-Hao; Wu, Jyun-De; Chen, Chih-Yong; Sumd, Shih-Bin; Yin, Hsin-I; Hsu, Der-Jen

2014-04-01

Betel quid chewing is common in Taiwan. The work of betel quid preparers is characterized by long hours of static work, awkward working posture and highly repetitive hand/wrist motion. However, the musculoskeletal health of betel quid preparers receives very little attention. The Chinese version of the Standardized Nordic Musculoskeletal Questionnaire (NMQ) was administered, and electrogoniometers and electromyography were used in this cross-sectional study to characterize the hand/wrist motion of the subjects. Physical examinations on the thumbs and wrists of the subjects were conducted by means of Phalen's test and Finkelstein's test, respectively. Among the 225 participants, more than 95% attributed their musculoskeletal complaints to their work, and shoulder, neck, hand/wrist, and lower back discomfort were most frequently reported. More than 70% of the preparers did not seek medical treatment for their musculoskeletal problems. Based on the physical examination, 24% of the participants had suspected symptom of either carpal tunnel syndrome (CTS) or DeQuervain's tenosynovitis. The instrumental measurements indicated that betel quid preparation is characterized by extreme angle ranges and moderate repetition of wrist motion as well as low forceful exertion. This study concludes that betel quid preparers are a high risk group of developing musculoskeletal disorders (MSDs). Future studies by electrogoniometers and detailed physical examination on betel quid preparers are needed to determine the predisposing factors for CTS. Some intervention measures to prevent MSDs and to lessen psychological stress for this group of workers are strongly suggested. © 2014 Wiley Periodicals, Inc.

Analysis of forces developed during root canal preparation with the balanced force technique.

PubMed

Blum, J Y; Machtou, P; Esber, S; Micallef, J P

1997-11-01

The aim of this study was to examine the forces and torque developed during root canal preparation with the balanced force technique using a recently described force-analyser device. A tooth was placed in a holder within the Endograph and forces and torques exerted were recorded. These parameters, which can be studied during preparation (on-line) or stored and examinated subsequently (off-line) generated endograms, which showed the forces generated with time. In addition, the endograms of preparations performed by students and endodontists, as well as deliberately induced failures in preparation technique (broken instruments), were compared. The values for the forces and torques depended on the size of the instruments and were related to the phase of the preparation. For the endodontists, the vertical and horizontal forces varied, respectively, from 0.08 +/- 0.01 kg for a size 15 to 0.65 +/- 0.10 kg for a size 45, and from 0.01 +/- 0.005 kg for a size 15 to 0.4 +/- 0.1 kg for a size 40. The torque varied from 0.08 +/- 1 kg mm-1 for a size 15 to 1.6 +/- 0.4 kg mm-1 for a size 45. With the endograms used as a reference, the relation between the developed vertical forces and the torque became more similar between the groups of endodontists and students. The Endograph provides a new approach to the analysis of preparation technique because it depicts the relationships between the different parameters of the preparation.

KSC-2009-4752

NASA Image and Video Library

2009-08-17

VANDENBERG AIR FORCE BASE, Calif. -- At Vandenberg Air Force Base's Astrotech processing facility in California, workers prepare to move NASA's Wide-field Infrared Survey Explorer, or WISE, spacecraft from the travel dolly to a work stand. The satellite will survey the entire sky at infrared wavelengths, creating a cosmic clearinghouse of hundreds of millions of objects, which will be catalogued, providing a vast storehouse of knowledge about the solar system, the Milky Way, and the universe. Launch is scheduled no earlier than Dec. 10. Photo credit: NASA/Moore, VAFB

Chapter 1.1 Process Scale-Up of Cellulose Nanocrystal Production to 25 kg per Batch at the Forest Products Laboratory

Treesearch

Richard S. Reiner; Alan W. Rudie

2013-01-01

The Fiber and Chemical Sciences Research Work Unit at the Forest Products Laboratory began working out the preparation of cellulose nanocrystals in 2006, using the method of Dong, Revol, and Gray. Initial samples were provided to several scientists within the Forest Service. Continued requests for this material forced scale-up from the initial 20 g scale to kg...

The Federal Role in Bringing Education into the National Information Infrastructure

NASA Technical Reports Server (NTRS)

Cradler, John

1995-01-01

One of the most important issues facing Congress is to work with business, education, and the states to enable the nation's shools to better prepare students for a technological work force and to ensure that education has a place on the National Information Infrastructure (NII). This document provides background and important information for national leaders concerned about education, the information infrastructure, and related issues for the Federal government.

A RESEARCH STUDY OF AGRICULTURAL TECHNICIANS.

ERIC Educational Resources Information Center

JENSEN, BRUCE F.

QUESTIONNAIRES WERE MAILED TO 297 BUSINESS FIRMS TO DETERMINE THE CHARACTER OF THE WORK FORCE, THE TURNOVER OR OPENINGS ANNUALLY, THE JOB QUALIFICATIONS REQUIRED TO FILL THE JOBS, AND THE TRAINING PROGRAMS NEEDED TO PREPARE STUDENTS FOR THE OCCUPATIONS IN AGRICULTURAL BUSINESSES, GOVERNMENTAL AGENCIES, AND FARMS IN THE COLLEGE OF THE SEQUOIAS…

Career Development of Single Parents. Information Series No. 324.

ERIC Educational Resources Information Center

Burge, Penny L.

The number of single-parent families has increased dramatically. These families are subject to extreme economic problems and thus are in special need of career development and vocational preparation. Displaced homemakers are at a disadvantage inasmuch as they must reenter the work force; moreover, they face the additional career development…

Diversity Intersects with National Security.

ERIC Educational Resources Information Center

Chew, Cassie

2003-01-01

Describes how the United Negro College Fund's Institute for International Public Policy is preparing to host a series of open-ended discussions with top government and business officials on the importance of a diverse work force as a national security imperative, as well as a competitive advantage in a global economy. (EV)

Contextual Learning and Tech Prep Curriculum Integration.

ERIC Educational Resources Information Center

Edling, Walter

Because tech prep has the twin goals of preparing students for entry into postsecondary/continuing education or the work force after high school, tech prep programs require significant modification of conventional curricula and teaching methodologies. Both research and experience have demonstrated that the ability to transfer learning from one…

Massachusetts One-Stop Career Centers: Job Placement for Disadvantaged Students

ERIC Educational Resources Information Center

Matrundola, Lisa A.

2010-01-01

This study investigated the services provided to students' participating in career preparation programs (e.g., career counseling, mentoring, apprenticeships, work-based learning, or GED programs) provided by the Massachusetts One-Stop Career Centers. A study conducted by the President's Task Force for Disadvantaged Students (2003) found that…

Installation Management Command: Preparing Civilians for the Army of 2020

DTIC Science & Technology

2013-03-01

fewer people who remain are asked to do more. The White Paper identified the Civilian Work Force Transformation ( CWT ), a program initiative for a...6-22, ADRP 7-0, CWT and the Army Strategic Planning Guidance of 2013. Development should occur in alignment with the leader development pillars and

Pre-deployment preparation of military nurses of the South African National Defence Force for participation in peace support operations.

PubMed

Jumat, Jennifer D; Bezuidenhout, Marthie C; Neethling, Theodor G

2014-11-25

South Africa has dedicated itself to participate in peace support operations (PSOs). The concept of 'jointness', involving different arms of services, was adopted within the South African National Defence Force, thus involving nurses in PSOs. Combat-readiness being a prerequisite for those involved in PSOs raised questions as to the readiness of forces to participate in these missions. There is a need for specific nursing care during PSOs, but the role and functions of nurses during such operations were not clearly defined; thus their preparation for these missions had very little scientific grounding. These were to explore the pre-deployment preparation needs of military professional nurses during PSOs, and to describe the experience of these nurses whilst being deployed. A quantitative exploratory, descriptive and contextual approach was used. Questionnaires were distributed to 99 professional nurses who had deployment experience, and 72 participated (73% response rate). Relevant peace mission concepts are the environment, jointness, behaviour and mission readiness, which served as the conceptual bases for the study. Findings indicated that the nurses were not fully informed of their responsibilities during deployment or the circumstances under which they would have to work and live. Their preparation is not fully integrated with that of the other armed forces, and deficiencies in their training and development were identified which negatively impact on their mission readiness. Recommendations were made in terms of human resource requirements, psychological training, better integration of jointness training, and content of training and development to ensure mission readiness of nurses.

77 FR 61780 - Preparation of the 2013 American Indian Population and Labor Force Report

Federal Register 2010, 2011, 2012, 2013, 2014

2012-10-11

... DEPARTMENT OF THE INTERIOR Bureau of Indian Affairs Preparation of the 2013 American Indian... preparation of the 2013 American Indian Population and Labor Force Report. DATES: Written comments are due... regarding preparation of the 2013 Labor Force Report, please contact Steven Payson, Economist, Office of the...

School-to-Work Transition in the U.S.: The Case of the Missing Social Partners. A Report of the Governance and Finance Team of the Comparative Learning Teams Project.

ERIC Educational Resources Information Center

Glover, Robert W.; And Others

A team of U.S. business, labor, and public policy representatives visited Denmark, Germany, and Switzerland to investigate the European approach to preparing young people for the work force. It gathered information on the performance of governance and finance systems abroad and identified their key underlying principles and operations. Six common…

Occupational allergy after exposure to caddis flies at a hydroelectric power plant.

PubMed Central

Kraut, A; Sloan, J; Silviu-Dan, F; Peng, Z; Gagnon, D; Warrington, R

1994-01-01

A cross sectional survey was conducted in a hydroelectric power plant in which the workforce was exposed to large numbers of caddis flies. 28 of 57 employees participated. About 50% of the participants reported work related eye, nose, and sinus symptoms and wheezing. Working in locations with greater exposure to caddis flies was significantly associated with work related symptoms. 17 workers (61%) were skin prick positive to a laboratory prepared caddis fly antigen (LCFA) made from the remains of caddis flies present in the plant and 11 (39%) had positive reactions to a commercial caddis fly antigen (CCFA). Workers stationed in heavily exposed areas were 3.7 times as likely to have a positive response to the LCFA (p = 0.009) and 5.3 times as likely to have a positive response to the CCFA (p = 0.036). 13 (46%) of survey respondents reported three or more work related symptoms. 10 (91%) CCFA positive workers reported three or more work related symptoms. Pulmonary function studies revealed slight, but not significantly decreased forced vital capacity (FVC), forced expiratory volume in one second (FEV1), and FEV1/FVC ratios in workers who were skin test positive to either caddis fly preparation when compared with those who were negative. One worker who was skin test positive to both antigens had a cross shift fall in FEV1 of 20% predicted. Occupational allergy to caddis flies proved to be a significant health problem at this work site. PMID:8044233

Advanced Dental Education: Recommendations for the 80's. Issues in Dental Health Policy.

ERIC Educational Resources Information Center

American Association of Dental Schools, Washington, DC.

Six statements of working principles and 11 major recommendations falling within those areas, as established by the Task Force on Advanced Dental Education, are presented. Supporting recommendations are also provided. The six principles include: (1) no change is recommended in the present goal of predoctoral education, to prepare students for…

Business and Marketing Education Programs in Georgia: Focus Groups Examine Issues for Program Reform.

ERIC Educational Resources Information Center

Womble, Myra J.; Adams, J. Elaine; Stitt-Gohdes, Wanda L.

2000-01-01

Focus groups with 25 business and 18 marketing teachers and 6 business/industry representatives elicited the following opinions: the primary purpose of business/marketing education is work force preparation; dedicated faculty and administrative support are ideal features; a strong voice for vocational education is needed; and important skill areas…

Pennsylvania Blue Shield Job Linked Skills Program. Teacher's Manual [and] Technical Manual.

ERIC Educational Resources Information Center

Pennsylvania State Univ., University Park. Inst. for the Study of Adult Literacy.

Two closely related publications from the same project, a Teacher's Manual" and a "Technical Manual", are combined here. These manuals are intended to accompany a work force literacy course designed to meet the basic skills needs of midliterate adults employed or preparing for employment in the health insurance industry.…

When Bad Things Happen in Good Libraries: Staff Tools for the '90s and Beyond.

ERIC Educational Resources Information Center

Bangs, Patricia

1998-01-01

A Problem Task Force from the Fairfax County Public Library worked with other county agencies such as the police and social services to redesign a "Problem Behavior Manual" and present a training module for staff to better prepare them to deal with socially ill patrons. (Author/AEF)

Implementing Total Quality Management in Vocational Education.

ERIC Educational Resources Information Center

Navaratnam, K. K.; Mountney, Peter

In an internationally competitive training environment, implementation of Total Quality Management (TQM) in vocational education can provide a comparative advantage in preparing the type of work force required for micro and macro economic reforms. The concept of TQM can be used as a management tool to improve the standards of vocational training.…

Tailoring Programs for Better Fit. The Key to Coordination.

ERIC Educational Resources Information Center

Ferrero, Lee

1994-01-01

The most serious problem with the current work force preparation system is that many employment and training programs operate today to serve roughly the same people. Instead, these programs should be coordinated better to lower costs in the face of lowered funding. The General Accounting Office reports that about 125 federal programs do…

Getting Ready for the Real World: Student Perspectives on Bringing Industry Collaboration into the Classroom

ERIC Educational Resources Information Center

Marcketti, Sara B.; Karpova, Elena

2014-01-01

Learning through industry collaborations is critical in decreasing the gap between the real world and the academic environment. Working on challenges drawn from industry can increase students' knowledge and future employability, thus enhancing labor force preparation. This study explored students' perceptions (n = 110) of the benefits…

An Exploration of High School Redesign

ERIC Educational Resources Information Center

Merchant, Laura

2011-01-01

Public high schools today are faced with the challenge of preparing a diverse student population for both post-secondary education and entering the work force. However, they are doing so under the constraints of an educational structure that was developed years ago and one that has failed to adapt to the many changes in society. Schools are…

Related Core Academic Knowledge and Skills. Georgia Core Standards for Occupational Clusters.

ERIC Educational Resources Information Center

Georgia Univ., Athens. Dept. of Occupational Studies.

This document lists the industry-identified core academic knowledge and skills that should be possessed by all Georgia students who are enrolled in occupational cluster programs and are preparing to enter the work force or continue their occupational specialization at the postsecondary level. First, 63 related communications competencies are…

Adult Basic Education Methodology and Curriculum.

ERIC Educational Resources Information Center

Pierce, W. Lee; And Others

As Mississippi approaches the 21st century and an increasingly more competitive business climate, the state should be prepared to develop its most precious business asset--its work force. According to 1990 data, Mississippi contributes only 8.5 percent of funding for adult education (the remaining 91.5 percent comes from federal sources) to serve…

Hierarchical atom type definitions and extensible all-atom force fields.

PubMed

Jin, Zhao; Yang, Chunwei; Cao, Fenglei; Li, Feng; Jing, Zhifeng; Chen, Long; Shen, Zhe; Xin, Liang; Tong, Sijia; Sun, Huai

2016-03-15

The extensibility of force field is a key to solve the missing parameter problem commonly found in force field applications. The extensibility of conventional force fields is traditionally managed in the parameterization procedure, which becomes impractical as the coverage of the force field increases above a threshold. A hierarchical atom-type definition (HAD) scheme is proposed to make extensible atom type definitions, which ensures that the force field developed based on the definitions are extensible. To demonstrate how HAD works and to prepare a foundation for future developments, two general force fields based on AMBER and DFF functional forms are parameterized for common organic molecules. The force field parameters are derived from the same set of quantum mechanical data and experimental liquid data using an automated parameterization tool, and validated by calculating molecular and liquid properties. The hydration free energies are calculated successfully by introducing a polarization scaling factor to the dispersion term between the solvent and solute molecules. © 2015 Wiley Periodicals, Inc. © 2015 Wiley Periodicals, Inc.

Quantitative assessment of the enamel machinability in tooth preparation with dental diamond burs.

PubMed

Song, Xiao-Fei; Jin, Chen-Xin; Yin, Ling

2015-01-01

Enamel cutting using dental handpieces is a critical process in tooth preparation for dental restorations and treatment but the machinability of enamel is poorly understood. This paper reports on the first quantitative assessment of the enamel machinability using computer-assisted numerical control, high-speed data acquisition, and force sensing systems. The enamel machinability in terms of cutting forces, force ratio, cutting torque, cutting speed and specific cutting energy were characterized in relation to enamel surface orientation, specific material removal rate and diamond bur grit size. The results show that enamel surface orientation, specific material removal rate and diamond bur grit size critically affected the enamel cutting capability. Cutting buccal/lingual surfaces resulted in significantly higher tangential and normal forces, torques and specific energy (p<0.05) but lower cutting speeds than occlusal surfaces (p<0.05). Increasing material removal rate for high cutting efficiencies using coarse burs yielded remarkable rises in cutting forces and torque (p<0.05) but significant reductions in cutting speed and specific cutting energy (p<0.05). In particular, great variations in cutting forces, torques and specific energy were observed at the specific material removal rate of 3mm(3)/min/mm using coarse burs, indicating the cutting limit. This work provides fundamental data and the scientific understanding of the enamel machinability for clinical dental practice. Copyright © 2014 Elsevier Ltd. All rights reserved.

Atomic Force Microscopy of Biological Membranes

PubMed Central

Frederix, Patrick L.T.M.; Bosshart, Patrick D.; Engel, Andreas

2009-01-01

Abstract Atomic force microscopy (AFM) is an ideal method to study the surface topography of biological membranes. It allows membranes that are adsorbed to flat solid supports to be raster-scanned in physiological solutions with an atomically sharp tip. Therefore, AFM is capable of observing biological molecular machines at work. In addition, the tip can be tethered to the end of a single membrane protein, and forces acting on the tip upon its retraction indicate barriers that occur during the process of protein unfolding. Here we discuss the fundamental limitations of AFM determined by the properties of cantilevers, present aspects of sample preparation, and review results achieved on reconstituted and native biological membranes. PMID:19167286

United States Air Force 611th Air Support Group Civil Engineering Squadron, Elmendorf AFB, Alaska. Remedial investigation and feasibility study Point Lay Radar Installation, Alaska. Final report

DOE Office of Scientific and Technical Information (OSTI.GOV)

Karmi, S.

1996-03-04

The United States Air Force (Air Force) has prepared this Remedial Investigation/Feasibility Study (RI/FS) report to present the results of RI/FS activities at four sites located at the Point Lay radar installation. The remedial investigation (RI) field activities were conducted at the Point Lay radar installation during the summer of 1993. The four sites at Point Lay were investigated because they were suspected of being contaminated with hazardous substances. RI activities were conducted using methods and procedures specified in the RI/FS Work Plan, Sampling and Analysis Plan (SAP), and Health and Safety Plan.

Environmental Assessment, Balloon Launch and Landing Operations, Air Force Research Laboratory, Space Vehicles Directorate, Kirtland Air Force Base, New Mexico

DTIC Science & Technology

2012-06-01

Force Research Laboratory , Space Vehicles Directorate ( AFRL /RV) located at Kirtland Air Force Base is preparing an Environmental Assessment (EA) for...United States Air Force Research Laboratory , Space Vehicles Directorate ( AFRL /RV) located at Kirtland Air Force Base is preparing an Environmental...United States Air Force Research Laboratory , Space Vehicles Directorate ( AFRL

Investing in People: A Strategy to Address America's Workforce Crisis. Background Papers. Vols. I-II.

ERIC Educational Resources Information Center

Department of Labor, Washington, DC. Commission on Workforce Quality and Labor Market Efficiency.

The 49 papers in these two volumes were prepared to assist the Commission on Workforce Quality and Labor Market Efficiency in making recommendations for improving the U.S. work force. The papers summarize existing research and make recommendations on subjects reflecting seven Commission tasks: (1) examine the roles and effectiveness of privately…

Critical Thinking and Clinical Judgment in Novice Registered Nurses

ERIC Educational Resources Information Center

Tyne, Sheila L.

2018-01-01

The health care field has become increasingly more complex, requiring new nurses to be prepared upon graduation to respond to a variety of complex situations. Unfortunately, many graduates from associate degree nursing (ADN) programs are not able to think critically upon entering the work force. This presents a major problem for the nurse and for…

Advances in Technology in Continuing Education: Who Should Foot the Bill?

ERIC Educational Resources Information Center

Hanson, Matthew

2013-01-01

Every continuing education unit must be at the forefront of the technology boom in order to remain attractive to students and best prepare them for the work force. Unfortunately, there is a significant cost associated with technological advancement sparking the debate over who should foot the bill for innovations. This article applies the Higher…

Vocational + Academic Integration: Preparing Texas Students for the Work Force. Evaluation Report.

ERIC Educational Resources Information Center

Texas State Council on Vocational Education, Austin.

In a study of integration of vocational and academic education in Texas, administrators of a stratified random sample of 112 school districts in the state were surveyed, and 65% responded. Steps toward integration were being taken in 84% of the districts; however, only four districts have implemented integration plans described as comprehensive.…

Workforce 2020: Work and Workers in the 21st Century.

ERIC Educational Resources Information Center

Judy, Richard W.; D'Amico, Carol

The sequel to "Workforce 2000," this book lays out the general contours of the employment landscape depicting the many roads to "Workforce 2020" and offers the best ideas about what lies ahead and what workers should do to prepare for the journey. Chapter 1 examines the forces shaping the U.S. economy: rapid technological change; further global…

Building Public-Private Partnerships To Improve Vocational Education in Illinois.

ERIC Educational Resources Information Center

Sheets, Robert G.; And Others

The Illinois Council on Vocational Education (ICoVE) launched a statewide study in 1990 to understand the perspectives of business and labor on what vocational education can do to prepare the work force with the skills necessary for the future. The study was designed to build new public-private partnerships. It included a survey of businesses and…

Women in Workplace: Vocational Education and Segregated Division of Labor.

ERIC Educational Resources Information Center

Lasonen, Johanna; Burge, Penny L.

The United States and Finland show a clear gender stratification in work life. The uneven, gender-biased division of labor has been maintained, even though about half of the total U.S. and Finnish labor force are women. In both countries, female students tend to make traditional occupational choices that prepare them for low-paying fields where…

Transitioning Adult Education Students into Community College

ERIC Educational Resources Information Center

Humpherys, Bryce Ralph

2012-01-01

At both a national and state level there is a growing need for skilled workers in the labor force. Educating low skilled adults is one way to address this need. Adult education programs teach low skilled adults basic academic skills to prepare them for work and life in U.S. society. Until recently little attention was paid to transitioning…

Teaching New Dogs New Tricks: Teacher Leadership in the Performance Assessment for California Teachers (PACT)

ERIC Educational Resources Information Center

Nordengren, Chase

2016-01-01

Institutions that work with teachers and teaching, from school districts to unions to preparation programs, find themselves under enormous pressure to define who teachers ought to be and what capabilities they ought hold, before outside forces define those ideas for them. Still, consensus is hard to find. While other professions "manage…

Lessons from German and American Industrial-Education Partnerships.

ERIC Educational Resources Information Center

Theuerkauf, Walter E.; Putnam, A. R.

The search for a work force preparation model that could serve as a guide for meeting present and emerging challenges has lead to a focus on the German dual system youth apprenticeship model. In this system, the practice-oriented part is taken over by commercial enterprises and theoretical knowledge is imparted by vocational schools. The trainee…

A Work Force for Environment and Energy. A Master Plan for Environmental/Energy Higher Education in Illinois.

ERIC Educational Resources Information Center

Illinois Inst. for Environmental Quality, Chicago.

This master plan for environmental and energy higher education in Illinois is a direct result of a mandate from the Illinois General Assembly. To prepare students to confront our nation's environmental problems, each university will submit a management and development plan, designed to preserve existing environmental values and provide…

Workforce Development for Communities in Crisis and Transition: A Case Study of the Windward Islands.

ERIC Educational Resources Information Center

Whittington, L. Alfons

The Windward Islands (Dominica, Grenada, St. Lucia, and St. Vincent and the Grenadines) have taken several approaches to educate the work force and prepare for the technology-driven society of the future. These approaches include government initiatives, such as the governments' commitment to primary education and more recently to secondary…

Engineering Employment Characteristics. Engineering Education and Practice in the United States.

ERIC Educational Resources Information Center

National Academy of Sciences - National Research Council, Washington, DC. Commission on Engineering and Technical Systems.

This panel report was prepared as part of the study of engineering education and practice conducted under the guidance of the National Research Council's Committee on the Education and Utilization of the Engineer. The panel's goal was to provide a data base that describes the engineering work force, its main activities, capabilities, and principal…

Investigation of Preparation and Mechanisms of a Dispersed Particle Gel Formed from a Polymer Gel at Room Temperature

PubMed Central

Zhao, Guang; Dai, Caili; Zhao, Mingwei; You, Qing; Chen, Ang

2013-01-01

A dispersed particle gel (DPG) was successfully prepared from a polymer gel at room temperature. The polymer gel system, morphology, viscosity changes, size distribution, and zeta potential of DPG particles were investigated. The results showed that zirconium gel systems with different strengths can be cross-linked within 2.5 h at low temperature. Scanning electron microscopy (SEM), transmission electron microscopy (TEM), and atomic force microscopy (AFM) results showed that the particles were polygonal particles with nano-size distribution. According to the viscosity changes, the whole preparation process can be divided into two major stages: the bulk gel cross-linking reaction period and the DPG particle preparation period. A polymer gel with a 3-dimensional network was formed in the bulk gel cross-linking reaction period whereas shearing force and frictional force were the main driving forces for the preparation of DPG particles, and thus affected the morphology of DPG particles. High shearing force and frictional force reduced the particle size distribution, and then decreased the zeta potential (absolute value). The whole preparation process could be completed within 3 h at room temperature. It could be an efficient and energy-saving technology for preparation of DPG particles. PMID:24324817

32 CFR 989.23 - Contractor prepared documents.

Code of Federal Regulations, 2010 CFR

2010-07-01

... 32 National Defense 6 2010-07-01 2010-07-01 false Contractor prepared documents. 989.23 Section... PROTECTION ENVIRONMENTAL IMPACT ANALYSIS PROCESS (EIAP) § 989.23 Contractor prepared documents. All Air Force... should reflect on the cover sheet they are an Air Force document. Contractor preparation information...

KSC-2009-5141

NASA Image and Video Library

2009-09-15

EDWARDS AIR FORCE BASE, Calif. – (ED09-0253-73) The nose of Space Shuttle Discovery peers out from work platforms while undergoing servicing in the Mate-DeMate Device at NASA’s Dryden Flight Research Center in preparation for its ferry flight to NASA’s Kennedy Space Center in Florida. Discovery returned to Earth Sept. 11 on the STS-128 mission, landing at Edwards Air Force Base in California. The shuttle delivered more than 7 tons of supplies, science racks and equipment, as well as additional environmental hardware to sustain six crew members on the International Space Station. Photo credit: NASA/Tony Landis

A Study of the Attraction Forces of Lunar Dust Simulant

NASA Technical Reports Server (NTRS)

Bradley, Robert Kelley; Jeevarajan, Antony; Thomas, Valor

2007-01-01

In previous manned lunar missions little work was done on countermeasures to combat the spread of lunar dust onto equipment and into the habitat because the astronauts were not scheduled to stay on the lunar surface for extended periods of time. However, as NASA prepares to return to the moon for longer durations than before developing materials that can help in the fight against lunar dust is important. The purpose of this project is to examine the attraction forces between lunar dust and various materials in an effort to discover materials which have a low affinity for lunar dust. The adhesion forces present between individual grains of dust and various materials were analyzed using an atomic force microscope (AFM). The AFM probes were calibrated by the added-mass technique to find the spring constant of the cantilever. The probes were modified by attaching a particle of lunar dust stimulant to the cantilever arm. The adhesion force between the dust particle and various materials were determined by analysis of AFM force spectra.

Mental health issues in the workplace: maintaining a productive work force.

PubMed

Raderstorf, Mark; Kurtz, Jennifer

2006-08-01

Occupational health nurses must intervene early and validate the conditions and experiences of employees with psychiatric disabilities. Occupational health nurses must ensure employees are receiving appropriate treatment. They must be aware of and prepared to mitigate iatrogenic influences. Occupational health nurses can facilitate resolution of workplace conflicts and issues regarding changing supervisors or departments. They can also facilitate return to work by establishing clear restrictions and coordinating accommodations. compassionate and supportive, yet assertive, approach is key to managing mental health disability. It will, in most cases, facilitate successful return to full-time work.

Draft SEI Program Plans: 1994-1998

DTIC Science & Technology

1993-08-01

process must depersonalize risks so they are viewed as opportunities for program success. Factors for communication are in all the method devel...and the undergraduate level to adequately prepare new soft- ware engineers entering the work force. Educators and trainers of current professionals...learning opportu- nities. The technical foundation for many of these products is the evolving SEI model curricula for graduate and undergraduate degree

Inspector General - Personal Staff - Joint Staff - The National Guard

Science.gov Websites

contacting the Office of The Inspector General The IG cannot action request with incomplete DA 1559s or AF Form 102s. In order to have an IG begin work on a matter, personnel must prepare a written IG Action General Action Request (DA 1559) Air Force - The Inspector General Personal and Fraud, Waste & Abuse

High School Reform and Work: Facing Labor Market Realities. Policy Information Report

ERIC Educational Resources Information Center

Barton, Paul E.

2006-01-01

The focus of the current high school reform movement goes beyond qualifying students to enter college. It extends to raising the rigor of coursework so that students are prepared for college-level classes, rather than forced to enter remedial courses. This need is based on extensive study of the gap between college admissions criteria and the more…

Teaching Business Students about HIV and AIDS in the Workplace: Curriculum and Resources

ERIC Educational Resources Information Center

Miller, Alan N.

2008-01-01

The significant and increasing number of people in the U.S. and global work-forces who are infected with HIV or who have AIDS must be managed differently from those who are not infected and those who have other life-threatening diseases. Business schools can prepare their MBA students to effectively, legally, and compassionately manage people with…

Workforce Development: Building Statewide Systems. Issue Paper No. 2. Investing in People Project.

ERIC Educational Resources Information Center

McCarthy, Karin; Lashman, Rebekah

This report is the product of a project called Investing in People, in which the National Conference of Legislatures and Jobs for the Future helped five states as they tried to develop and implement work force preparation and training strategies to meet the challenge of a competitive global economy. The report is organized in six sections. The…

Identification of Anticipated Job Stressors of Registered Nurse Refresher Students as They Prepare to Reenter the Work Force Following a Career Break

ERIC Educational Resources Information Center

Peterson, Carol A.

2013-01-01

Multifactorial reasons have produced a growing nursing shortage. One possible group that could reverse this shortage is inactive nurses. Many stakeholders wonder about allocating scarce resources to identify, locate, educate, and redeploy this group into active practice. The purpose of this one-phase embedded validating quantitative mixed…

A Core Course on Veterans' Health in an Online RN to BSN Program: Preparing Nurses to Work with Veterans

ERIC Educational Resources Information Center

Keavney, Elaine C.

2015-01-01

The Joining Forces Initiative challenges nursing programs throughout the country to develop curriculum that addresses the unique healthcare issues facing veterans. It is imperative that Bachelor of Science in Nursing (BSN) students acquire the knowledge that will help them to care for veterans in all areas of nursing practice. This article…

Preparing for Large-Force Exercises with Distributed Simulation: A Panel Presentation

DTIC Science & Technology

2010-07-01

Preparing for Large Force Exercises with Distributed Simulation: A Panel Presentation Peter Crane, Winston Bennett, Michael France Air Force...used distributed simulation training to complement live-fly exercises to prepare for LFEs. In this panel presentation , the speakers will describe... presentations on how detailed analysis of training needs is necessary to structure simulator scenarios and how future training exercises could be made more

Influence of stripping and cooling atmospheres on surface properties and corrosion of zinc galvanizing coatings

NASA Astrophysics Data System (ADS)

Yasakau, K. A.; Giner, I.; Vree, C.; Ozcan, O.; Grothe, R.; Oliveira, A.; Grundmeier, G.; Ferreira, M. G. S.; Zheludkevich, M. L.

2016-12-01

In this work the influence of stripping/cooling atmospheres used after withdrawal of steel sheet from Zn or Zn-alloy melt on surface properties of Zn (Z) and Zn-Al-Mg (ZM) hot-dip galvanizing coatings has been studied. The aim was to understand how the atmosphere (composed by nitrogen (N2) or air) affects adhesion strength to model adhesive and corrosive behaviour of the galvanized substrates. It was shown that the surface chemical composition and Volta potential of the galvanizing coatings prepared under the air or nitrogen atmosphere are strongly influenced by the atmosphere. The surface chemistry Z and ZM surfaces prepared under N2 contained a higher content of metal atoms and a richer hydroxide density than the specimens prepared under air atmosphere as assessed by X-ray photoelectron spectroscopy (XPS). The induced differences on the microstructure of the galvanized coatings played a key role on the local corrosion induced defects as observed by means of in situ Atomic force microscopy (AFM). Peel force tests performed on the substrates coated by model adhesive films indicate a higher adhesive strength to the surfaces prepared under nitrogen atmosphere. The obtained results have been discussed in terms of the microstructure and surface chemical composition of the galvanizing coatings.

On Preparing for Squadron Command

DTIC Science & Technology

1988-04-01

Gortler, Majur Gordon D. "Management Development---Could the Air Force Be Doing More?" Resear,;h Study, Air Command and Staff College. 1 07:3. 20...ABSTRACT (Continue on reverse If necessary and identify by block number) -This study addresses the broad issue of preparing Air Force officers for...are obsolete. SECURITY CLASSIFICATION OF THIS PAGE UNCLASSIFIED - - PREFACE This study addresses the broad Issue of preparing Air Force officers to

Biological Synthesis of Substituted o-Aminophenols

DTIC Science & Technology

1991-02-01

AMINOPHENOLS FINAL REPORT (November 1, 1987- December 31,1990) Work Performed Under Contract F49620-88-C-0016 Prepared for: I AIR FORCE OFFICE OF...Security Classification) Biological Synthesis of Substituted o- Aminophenols 12. PERSONAL AUTHOR(S) Dr. Terry K. Leib 13 . YP OF REPORT 3. TIME COVERED...0601 0706 high-temperature polymers, o- aminophenols , polvbenzoxazoles. 19. ABSTRACT (Continue on reverse if ne(essary and identify by block number

The California Central Coast Research Partnership: Building Relationships, Partnerships and Paradigms for University-Industry Research Collaboration (Abridged Version)

DTIC Science & Technology

2004-04-21

3-4 B. Strategic location ...........................................................................................5 C. Relevant R&D...and technology-based business sectors. The plan recognizes the key role of higher education in preparing a highly skilled work force and transferring...University technology R&D activities; the development of existing technology-based businesses and the creation of new ones; and the generation of

Vocational-Technical Education. Preparing a Work Force for the Challenges of the 1990s and Beyond. Evaluation Report.

ERIC Educational Resources Information Center

North Dakota State Council on Vocational Education, Bismarck.

This report presents the findings and recommendations of the North Dakota Council on Vocational Education on the effectiveness and adequacy of the state vocational education delivery system in carrying out the purposes of two federal acts, along with the coordination that took place between the two acts. The acts are the Carl D. Perkins Vocational…

Information and Communication Technology to Facilitate Learning for Students in the Health Professions: Current Uses, Gaps, and Future Directions

ERIC Educational Resources Information Center

Costello, Ellen; Corcoran, Mary; Barnett, Jacqueline S.; Birkmeier, Marisa; Cohn, Rhea; Ekmekci, Ozgur; Falk, Nancy L.; Harrod, Thomas; Herrmann, Debra; Robinson, Sean; Walker, Bryan

2014-01-01

Changes in the U.S. Healthcare System along with the need for institutions of higher education to prepare a work force ready to address the challenges of today and tomorrow have highlighted the need to incorporate technology in its broadest sense as part of the student learning experience. In health professional education, this becomes challenging…

Remarks Prepared for Delivery to the American Vocational Association [by the Assistant Secretary for Policy, U.S. Department of Labor.

ERIC Educational Resources Information Center

Dorn, Jenna

A number of factors have led to the crisis of work force unpreparedness that the United States now faces, including revolutionary changes that mean businesses now succeed on the qualities of their human rather than material resources. Jobs are demanding better reading, writing, and reasoning skills, and mental agility has replaced manual dexterity…

Loglines. January-February 2015

DTIC Science & Technology

2015-02-01

active-duty military and Joint Reserve Force augmentees at agency activities worldwide and industry customers of DLA. Contents of this endorsed by, the...would be available for military aircraft and ground vehicles sent to the region, DLA Land and prepared common repair items for forward movement...worked with told me that they felt that the world had abandoned them until they saw the American uniformed military physically on the ground in

Division B Commission 5: Documentation and Astronomical Data

NASA Astrophysics Data System (ADS)

Hanisch, Robert; Wise, Michael; Ohishi, Masatoshi; Andernach, Heinz; Bishop, Marsha; Egret, Daniel; Griffin, Elizabeth; Kembhavi, Ajit; Murphy, Tara; Pasian, Fabio; Schroeder, Anja; Tody, Douglas

2016-04-01

IAU Commission 5, Documentation and Astronomical Data, continued its mission of promoting and supporting sound practices of data management, data dissemination, and data preservation over the past three years. The Commission also prepared its proposal for continuation, with some changes in emphasis, after the IAU's commission restructuring program. Below we report on the activities of the various Working Groups and the one Task Force in Commission 5.

Intelligence Preparation of the Battlefield and Predictive Intelligence

DTIC Science & Technology

1986-12-03

takes place prior to the war or during a pause in the operations as friendly forces prepare for or assume the defense. The enemy simultaneously...committed himself. Based largely on the results of this IPB, the friendly forces prepare their plans. As the enemy bEgins his operation, situation...development will track his forces to confirm or refute the friendly expectations. As critical as it is to battlefield success, it is clear, that situation

A test method for determining adhesion forces and Hamaker constants of cementitious materials using atomic force microscopy

DOE Office of Scientific and Technical Information (OSTI.GOV)

Lomboy, Gilson; Sundararajan, Sriram, E-mail: srirams@iastate.edu; Wang Kejin

2011-11-15

A method for determining Hamaker constant of cementitious materials is presented. The method involved sample preparation, measurement of adhesion force between the tested material and a silicon nitride probe using atomic force microscopy in dry air and in water, and calculating the Hamaker constant using appropriate contact mechanics models. The work of adhesion and Hamaker constant were computed from the pull-off forces using the Johnson-Kendall-Roberts and Derjagin-Muller-Toropov models. Reference materials with known Hamaker constants (mica, silica, calcite) and commercially available cementitious materials (Portland cement (PC), ground granulated blast furnace slag (GGBFS)) were studied. The Hamaker constants of the reference materialsmore » obtained are consistent with those published by previous researchers. The results indicate that PC has a higher Hamaker constant than GGBFS. The Hamaker constant of PC in water is close to the previously predicted value C{sub 3}S, which is attributed to short hydration time ({<=} 45 min) used in this study.« less

Chaplains' Engagement with Suicidality among Their Service Users: Findings from the VA/DoD Integrated Mental Health Strategy.

PubMed

Kopacz, Marek S; Nieuwsma, Jason A; Jackson, George L; Rhodes, Jeffrey E; Cantrell, William C; Bates, Mark J; Meador, Keith G

2016-04-01

Chaplains play an important role in supporting the mental health of current and former military personnel; in this study, the engagement of Department of Veterans Affairs (VA), Army, Navy, and Air Force chaplains with suicidality among their service users were examined. An online survey was used to collect data from 440 VA and 1,723 Department of Defense (DoD) chaplains as part of the VA/DoD Integrated Mental Health Strategy. Differences were noted for demographics, work setting characteristics, encountering suicidality, and self-perceived preparation for dealing with suicidality. Compared to DoD chaplains, VA chaplains encounter more at-risk service users, yet feel less prepared for dealing with suicidality. Published 2015. This article is a U.S. Government work and is in the public domain in the USA.

Fabrication of silk fibroin film using centrifugal casting technique for corneal tissue engineering.

PubMed

Lee, Min Chae; Kim, Dong-Kyu; Lee, Ok Joo; Kim, Jung-Ho; Ju, Hyung Woo; Lee, Jung Min; Moon, Bo Mi; Park, Hyun Jung; Kim, Dong Wook; Kim, Su Hyeon; Park, Chan Hum

2016-04-01

Films prepared from silk fibroin have shown potential as biomaterials in tissue engineering applications for the eye. Here, we present a novel process for fabrication of silk fibroin films for corneal application. In this work, fabrication of silk fibroin films was simply achieved by centrifugal force. In contrast to the conventional dry casting method, we carried out the new process in a centrifuge with a rotating speed of 4000 rpm, where centrifugal force was imposed on an aluminum tube containing silk fibroin solution. In the present study, we also compared the surface roughness, mechanical properties, transparency, and cell proliferation between centrifugal and dry casting method. In terms of surface morphology, films fabricated by the centrifugal casting have less surface roughness than those by the dry casting. For elasticity and transparency, silk fibroin films obtained from the centrifugal casting had favorable results compared with those prepared by dry casting. Furthermore, primary human corneal keratocytes grew better in films prepared by the centrifugal casting. Therefore, our results suggest that this new fabrication process for silk fibroin films offers important potential benefits for corneal tissue regeneration. © 2015 Wiley Periodicals, Inc.

77 FR 3241 - Intent To Hold North Dakota Task Force Meeting as Established by the Missouri River Protection...

Federal Register 2010, 2011, 2012, 2013, 2014

2012-01-23

... duties of the Task Force are to prepare and approve a plan for the use of the funds made available under... of the Task Force are to prepare and approve a plan for the use of the funds made available under... Force Meeting as Established by the Missouri River Protection and Improvement Act of 2000 (Title VII...

Developments in Assisting Countries in Implementing the IAEA Additional Protocol

DOE Office of Scientific and Technical Information (OSTI.GOV)

Killinger, Mark H.; Hansen, Linda H.; Cain, Ronald A.

In 2008, the U.S. Department of Energy (DOE) began assisting selected non-nuclear weapon states in planning and preparing for implementation of the International Atomic Energy Agency’s Additional Protocol (AP). Since then, the AP international implementation program has contributed to the substantial progress made by Vietnam, Thailand, Iraq, and Malaysia in preparing for entry-into-force of the AP. An overall engagement plan has been developed with components designed to train government AP implementing agencies, inform policy makers, conduct outreach to industry and universities, make AP reporting software available and useful, and plan a detailed approach for implementing the declaration and complementary accessmore » provisions of the AP. DOE recently began collaborating with Indonesia, which has already entered the AP into force, requiring a second method of engagement somewhat different from that taken with countries that have not entered the AP into force. The AP international implementation program, administered by the International Nuclear Safeguards and Engagement Program, is working more closely with DOE’s International Nonproliferation Export Control Program to ensure countries are aware of and prepared to implement the export/import provisions of the AP. As the AP implementation program matures and helps move countries closer to entry-into-force or improved AP implementation, it is identifying characteristics of a country’s “end-state” that indicate that DOE assistance is no longer required. The U.S. AP Implementation Act and Senate Resolution of Ratification require the Administration to report annually to Congress on measures taken to achieve the adoption of the AP in non-nuclear weapon states. DOE’s AP international implementation program is a significant part of these measures. This paper describes recent developments to increase the scope and effectiveness of the program.« less

True non-contact atomic force microscopy imaging of heterogeneous biological samples in liquids: topography and material contrast.

PubMed

Almonte, Lisa; Colchero, Jaime

2017-02-23

The present work analyses how the tip-sample interaction signals critically determine the operation of an Atomic Force Microscope (AFM) set-up immersed in liquid. On heterogeneous samples, the conservative tip-sample interaction may vary significantly from point to point - in particular from attractive to repulsive - rendering correct feedback very challenging. Lipid membranes prepared on a mica substrate are analyzed as reference samples which are locally heterogeneous (material contrast). The AFM set-up is operated dynamically at low oscillation amplitude and all available experimental data signals - the normal force, as well as the amplitude and frequency - are recorded simultaneously. From the analysis of how the dissipation (oscillation amplitude) and the conservative interaction (normal force and resonance frequency) vary with the tip-sample distance we conclude that dissipation is the only appropriate feedback source for stable and correct topographic imaging. The normal force and phase then carry information about the sample composition ("chemical contrast"). Dynamic AFM allows imaging in a non-contact regime where essentially no forces are applied, rendering dynamic AFM a truly non-invasive technique.

Microbiological Analysis of the Food Preparation and Dining Facilities at Fort Myer and Bolling Air Force Base

DTIC Science & Technology

1975-02-01

the viewpoint of microbiological safety one would be tempted to conclude that Ft. Myer had a much lower risk hazard than Bolting Air Force Base. The...I TECHNICAL REPORT I I 76·63-FSL MICROBIOLOGICAL ANAL.YSIS OF THE FOOD PREPARATION AND DINING FACILITIES AT FORT MYER AND BOLLING AIR FORCE...RECIPIENT’ S CATALOG NUMBER 75-53-ESL 4. TITLE (and Subtltlo) 5. TYPE OF REPOR T & PERIOD COVERED Microbiological Analysis of the Food Preparation and

Planning for Life: Career Planning Excellence in America, A National Policy Forum (Washington, D.C., August 4, 1993). Recognition Program: Summer 1994.

ERIC Educational Resources Information Center

1994

The Career Planning for Life Forum was a national policy forum sponsored by the Committee for Economic Development (CED) and hosted by the U.S. Army. More than 250 representatives of business, education, government, and labor attended the forum and spent the day discussing the preparation of the country's young work force for the global economy.…

Vortex Wakes of Conventional Aircraft

DTIC Science & Technology

1975-05-01

Research Laboratories, Wright-Patterson Air Force Base , Ohio 45433, USA This work was prepared at the request of the Fluid Dynamics Panel of AGARD. THE...aerospace sciences relevant to strengthening the common defence posture; - Improving the co-operation among member nations in aerospace research and...two models have been developed to describe the inviscid structure of the vortex wake. The first model was due to Prandtl [10] and is based on the

A literature review of dental casualty rates.

PubMed

Mahoney, G D; Coombs, M

2000-10-01

The ability to determine dental casualty rates for the Australian Defence Force in a given situation is vital for military planners. This article reviews the literature and the available Australian Defence Force data on the subject to give some guide to planners. The review found the studies to be fairly consistent in that a well-prepared dentally fit force can expect 150 to 200 dental casualties per 1,000 soldiers per year. If the force were less prepared, as in the case of a reserve call out, this figure would be likely to increase; in the extreme case of an ill-prepared force or a force assisting in humanitarian aid, the emergency rate could be five times that figure. The literature also indicates a change in the nature of dental casualties. Although maxillofacial cases have remained steady at 25%, dental disease has decreased and endodontic cases have had a corresponding increase.

Social Significance of Fundamental Science Common to all Mankind

NASA Astrophysics Data System (ADS)

Zel'Dovich, Ya. B.

It is a challenge of science to play a great role in solution of the problem of meeting material and spiritual human demands. The argument is known that science has become a productive force. When characterizing economy of one or another country or region, it is a practice to speak about science-intensive works, i.e., those where production and competitiveness are directly related to a science level. The science-intensive works include, for example, production of microelectronic circuits and their application in computer and information science or production of pharmaceutical preparations using gene engineering. This list could be continued indefinitely…

Trends in dental and allied dental education.

PubMed

Neumann, Laura M

2004-09-01

Educational programs play an important role in preparing a qualified dental work force. This article reviews the current status and trends in dental, advanced dental and allied dental education programs in the United States and examines their impact on the dental work force. This analysis focuses on survey data collected by the American Dental Association during the past 10 to 15 years and compares recent patterns in applications, enrollment and graduation with previous trends. The numbers of educational programs, applicants, enrollees and graduates have increased in dentistry, dental hygiene and dental assisting, while dental laboratory technology has declined in all measures. The proportion of women in dentistry has increased, while the ethnic profile of dental and allied personnel has shown little change. Both the cost of dental education and student debt continue to increase. Despite increases in the number of educational programs and overall numbers of graduates from dental and allied dental education programs, the proportion of underrepresented groups still lags behind their representation in the overall population, and the number of allied personnel falls short of practice needs. Patterns in applications, enrollment and graduation are important determinants of the dental and allied dental work force. The cost and funding of education significantly affect the attractiveness of dental careers and the sustainability of educational programs and should be monitored carefully by the profession.

Single cell Enrichment with High Throughput Microfluidic Devices

NASA Astrophysics Data System (ADS)

Pakjesm Pourfard, Pedram

Microfluidics is a rapidly growing field of biomedical engineering with numerous applications such as diagnostic testing, therapeutics, and research preparation. Cell enrichment for automated diagnostic is often assayed through measurement of biochemical and biophysical markers. Although biochemical markers have been widely used, intrinsic biophysical markers, such as, Shear migration, Lift force, Dean force, and many other label-free techniques, are advantageous since they don't require costly labeling or sample preparation. However, current passive techniques for enrichment had limited adoption in clinical and cell biology research applications. They generally require low flow rate and low cell volume fraction for high efficiency. The Control increment filtration, T-shaped microfluidic device, and spiral-shaped microfluidic devices will be studied for single-cell separation from aggregates. Control increment filtration works like the tangential filter; however, cells are separated based off of same amount of flow rate passing through large space gaps. Main microchannel of T-Shaped is connected to two perpendicular side channels. Based off Shear-modulated inertial migration, this device will enable selective enrichment of cells. The spiral shaped microfluidic device depends on different Dean and lift forces acting on cells to separate them based off different sizes. The spiral geometry of the microchannel will enable dominant inertial forces and the Dean Rotation force to cause larger cells to migrate to the inner side of the microchannel. Because manipulation of microchannel dimensions correlates to the degree of cell separation, versatility in design exists. Cell mixture samples will contain cells of different sizes and therefore design strategies could be utilized to maximize the effectiveness of single-cell separation.

Communities’ Strategic Opportunities Through Broken Window Repair and Global Commons Improvements

DTIC Science & Technology

2014-06-01

5d. PROJECT NUMBER 5e. TASK NUMBER 5f. WORK UNIT NUMBER 7. PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES) Program Executive Office (Integrated...Warfare Systems),16107 Benedict Court,Woodbridge,VA,22191-4302 8. PERFORMING ORGANIZATION REPORT NUMBER 9. SPONSORING/MONITORING AGENCY NAME(S) AND...identified six priorities, areas of focus: continue to focus on institutional reform; re-evaluate our military’s force planning construct ; preparing for a

KSC-07pd1254

NASA Image and Video Library

2007-05-22

KENNEDY SPACE CENTER, FLA. -- In a clean room at Astrotech, workers prepare the Dawn spacecraft to be moved to a work stand for solar panel installation. Dawn's mission is to explore two of the asteroid belt's most intriguing and dissimilar occupants: asteroid Vesta and the dwarf planet Ceres. Dawn is scheduled to launch June 30 aboard a Delta II rocket from Launch Complex 17-B at Cape Canaveral Air Force Station. Photo credit: NASA/Jack Pfaller

Inotropic effects of diadenosine tetraphosphate in isolated canine cardiac preparations.

PubMed

Neumann, J; Meissner, A; Bokník, P; Gombosová, I; Knapp, J; Lüss, H; Müller, F U; Schlüter, H; Zidek, W; Rolf, N; Van Aken, H; Vahlensieck, U; Schmitz, W

1999-01-01

We studied the effects of diadenosine tetraphosphate (AP4A) on the force of contraction in canine preparations. The force of contraction was measured in isolated electrically driven (1 Hz) atrial and ventricular cardiac trabeculae from adult dogs. AP4A (100 microM) alone and after prestimulation with 10 nM isoproterenol reduced force of contraction in atrial preparations by approximately 24%. Moreover, AP4A (100 microM) alone and after prestimulation with 10 nM isoproterenol reduced the force of contraction in ventricular preparations by 29 and 29%, respectively. The negative inotropic effects of AP4A were abolished by the A1-adenosine receptor antagonist 1,3-dipropyl-cyclopentyl-xanthine (DPCPX). In summary, in canine myocardium, AP4A alone and after prestimulation with a beta-adrenoceptor agonist exerts negative inotropic effects, which are probably mediated via A1-adenosine receptors.

Characterization of new drug delivery nanosystems using atomic force microscopy

NASA Astrophysics Data System (ADS)

Spyratou, Ellas; Mourelatou, Elena A.; Demetzos, C.; Makropoulou, Mersini; Serafetinides, A. A.

2015-01-01

Liposomes are the most attractive lipid vesicles for targeted drug delivery in nanomedicine, behaving also as cell models in biophotonics research. The characterization of the micro-mechanical properties of drug carriers is an important issue and many analytical techniques are employed, as, for example, optical tweezers and atomic force microscopy. In this work, polyol hyperbranched polymers (HBPs) have been employed along with liposomes for the preparation of new chimeric advanced drug delivery nanosystems (Chi-aDDnSs). Aliphatic polyester HBPs with three different pseudogenerations G2, G3 and G4 with 16, 32, and 64 peripheral hydroxyl groups, respectively, have been incorporated in liposomal formulation. The atomic force microscopy (AFM) technique was used for the comparative study of the morphology and the mechanical properties of Chi-aDDnSs and conventional DDnS. The effects of both the HBPs architecture and the polyesters pseudogeneration number in the stability and the stiffness of chi-aDDnSs were examined. From the force-distance curves of AFM spectroscopy, the Young's modulus was calculated.

Corrosion behavior of mesoporous bioglass-ceramic coated magnesium alloy under applied forces.

PubMed

Zhang, Feiyang; Cai, Shu; Xu, Guohua; Shen, Sibo; Li, Yan; Zhang, Min; Wu, Xiaodong

2016-03-01

In order to research the corrosion behavior of bioglass-ceramic coated magnesium alloys under applied forces, mesoporous 45S5 bioactive glass-ceramic (45S5 MBGC) coatings were successfully prepared on AZ31 substrates using a sol-gel dip-coating technique followed by a heat treatment at the temperature of 400°C. In this work, corrosion behavior of the coated samples under applied forces was characterized by electrochemical tests and immersion tests in simulated body fluid. Results showed that the glass-ceramic coatings lost the protective effects to the magnesium substrate in a short time when the applied compressive stress was greater than 25MPa, and no crystallized apatite was formed on the surface due to the high Mg(2+) releasing and the peeling off of the coatings. Whereas, under low applied forces, apatite deposition and crystallization on the coating surface repaired cracks to some extent, thus improving the corrosion resistance of the coated magnesium during the long-term immersion period. Copyright © 2015 Elsevier Ltd. All rights reserved.

Building Better Leaders: Developing Air Force Squadron Leadership for the Next Century

DTIC Science & Technology

2003-01-01

the need for additional leadership preparation , have developed flight commander courses to prepare officers for their first major leadership role...commissioning sources through squadron command. It then looks at the new construct for leadership development; namely, the Force Development construct... new vision for developing character and leadership in the Air Force. Chapter two begins by identifying the need for

Age-related differences in lower-limb force-time relation during the push-off in rapid voluntary stepping.

PubMed

Melzer, I; Krasovsky, T; Oddsson, L I E; Liebermann, D G

2010-12-01

This study investigated the force-time relationship during the push-off stage of a rapid voluntary step in young and older healthy adults, to study the assumption that when balance is lost a quick step may preserve stability. The ability to achieve peak propulsive force within a short time is critical for the performance of such a quick powerful step. We hypothesized that older adults would achieve peak force and power in significantly longer times compared to young people, particularly during the push-off preparatory phase. Fifteen young and 15 older volunteers performed rapid forward steps while standing on a force platform. Absolute anteroposterior and body weight normalized vertical forces during the push-off in the preparation and swing phases were used to determine time to peak and peak force, and step power. Two-way analyses of variance ('Group' [young-older] by 'Phase' [preparation-swing]) were used to assess our hypothesis (P ≤ 0.05). Older people exerted lower peak forces (anteroposterior and vertical) than young adults, but not necessarily lower peak power. More significantly, they showed a longer time to peak force, particularly in the vertical direction during the preparation phase. Older adults generate propulsive forces slowly and reach lower magnitudes, mainly during step preparation. The time to achieve a peak force and power, rather than its actual magnitude, may account for failures in quickly performing a preventive action. Such delay may be associated with the inability to react and recruit muscles quickly. Thus, training elderly to step fast in response to relevant cues may be beneficial in the prevention of falls. Copyright © 2010 Elsevier Ltd. All rights reserved.

Atomic force microscopy contact, tapping, and jumping modes for imaging biological samples in liquids

NASA Astrophysics Data System (ADS)

Moreno-Herrero, F.; Colchero, J.; Gómez-Herrero, J.; Baró, A. M.

2004-03-01

The capabilities of the atomic force microscope for imaging biomolecules under physiological conditions has been systematically investigated. Contact, dynamic, and jumping modes have been applied to four different biological systems: DNA, purple membrane, Alzheimer paired helical filaments, and the bacteriophage φ29. These samples have been selected to cover a wide variety of biological systems in terms of sizes and substrate contact area, which make them very appropriate for the type of comparative studies carried out in the present work. Although dynamic mode atomic force microscopy is clearly the best choice for imaging soft samples in air, in liquids there is not a leading technique. In liquids, the most appropriate imaging mode depends on the sample characteristics and preparation methods. Contact or dynamic modes are the best choices for imaging molecular assemblies arranged as crystals such as the purple membrane. In this case, the advantage of image acquisition speed predominates over the disadvantage of high lateral or normal force. For imaging individual macromolecules, which are weakly bonded to the substrate, lateral and normal forces are the relevant factors, and hence the jumping mode, an imaging mode which minimizes lateral and normal forces, is preferable to other imaging modes.

Traction force microscopy of engineered cardiac tissues.

PubMed

Pasqualini, Francesco Silvio; Agarwal, Ashutosh; O'Connor, Blakely Bussie; Liu, Qihan; Sheehy, Sean P; Parker, Kevin Kit

2018-01-01

Cardiac tissue development and pathology have been shown to depend sensitively on microenvironmental mechanical factors, such as extracellular matrix stiffness, in both in vivo and in vitro systems. We present a novel quantitative approach to assess cardiac structure and function by extending the classical traction force microscopy technique to tissue-level preparations. Using this system, we investigated the relationship between contractile proficiency and metabolism in neonate rat ventricular myocytes (NRVM) cultured on gels with stiffness mimicking soft immature (1 kPa), normal healthy (13 kPa), and stiff diseased (90 kPa) cardiac microenvironments. We found that tissues engineered on the softest gels generated the least amount of stress and had the smallest work output. Conversely, cardiomyocytes in tissues engineered on healthy- and disease-mimicking gels generated significantly higher stresses, with the maximal contractile work measured in NRVM engineered on gels of normal stiffness. Interestingly, although tissues on soft gels exhibited poor stress generation and work production, their basal metabolic respiration rate was significantly more elevated than in other groups, suggesting a highly ineffective coupling between energy production and contractile work output. Our novel platform can thus be utilized to quantitatively assess the mechanotransduction pathways that initiate tissue-level structural and functional remodeling in response to substrate stiffness.

Pediatrics in the year 2020 and beyond: preparing for plausible futures.

PubMed

Starmer, Amy J; Duby, John C; Slaw, Kenneth M; Edwards, Anne; Leslie, Laurel K

2010-11-01

Although the future of pediatrics is uncertain, the organizations that lead pediatrics, and the professionals who practice within it, have embraced the notion that the pediatric community must anticipate and lead change to ultimately improve the health of children and adolescents. In an attempt to proactively prepare for a variety of conceivable futures, the board of directors of the American Academy of Pediatrics established the Vision of Pediatrics 2020 Task Force in 2008. This group was charged to think broadly about the future of pediatrics, to gather input on key trends that are influencing the future, to create likely scenarios of the future, and to recommend strategies to best prepare pediatric clinicians and pediatric organizations for a range of potential futures. The work of this task force led to the development of 8 "megatrends" that were identified as highly likely to have a profound influence on the future of pediatrics. A separate list of "wild-card" scenarios was created of trends with the potential to have a substantial influence but are less likely to occur. The process of scenario-planning was used to consider the effects of the 8 megatrends on pediatrics in the year 2020 and beyond. Consideration of these possible scenarios affords the opportunity to determine potential future pediatric needs, to identify potential solutions to address those needs, and, ultimately, to proactively prepare the profession to thrive if these or other future scenarios become realities.

Dynamic Rate Dependent Elastoplastic Damage Modeling of Concrete Subject to Blast Loading: Formulation and Computational Aspects

DTIC Science & Technology

1990-10-31

and ZIP Code) Dept. of Civil Fng. & Oper. Research Building 410 Princeton University Bolling AFB, D.C. 20332-6448 ?rinceton, NJ 08544 i. NAME OF FUNDING...Department of Civil Engineering & Operations Research Princeton University Princeton, N.J. 08544 31 October 1990 Final Technical Report Approved for public...release; Distribution is unlimited. I Prepared for Air Force Office of Scientific Research Building 410 Boiling AFB, D.C. 20332-6448 PREFACE This work

Breaking Barriers: A Case Sudy of UNITAF and NGO Cooperation During Operation Restore Hope, 1992-1993

DTIC Science & Technology

2012-04-04

that the United States Military forces must be prepared to effectively respond to humanitarian crises around the world.1 The JP acknowledges that the...international community. This thesis will then explore how NGOs and the military broke through cultural barriers to effectively work together. Finally it...world. In September 1992, Audrey Hepburn traveled to Somalia and returned home to tell of the horrors she witnessed. President George H.W. Bush was

United States-Vietnam Relations 1945-1967, Study Prepared by the Department of Defense, Book 2 of 12

DTIC Science & Technology

1971-01-01

status of other semi-military and police forces.... 29. South Vietnam’s mobilisable manpower pool is estimated at 1,500,000 physically fit...con- ferees themselves, who postulated an ideal political settlement incom- patible with the physical and psychological dismemberment of Vietnam...level where people are fighting and working, and in our new scale of values it is those who participate physically and selflessly in the fight

Muscle dysfunction in a zebrafish model of Duchenne muscular dystrophy.

PubMed

Widrick, Jeffrey J; Alexander, Matthew S; Sanchez, Benjamin; Gibbs, Devin E; Kawahara, Genri; Beggs, Alan H; Kunkel, Louis M

2016-11-01

Sapje zebrafish lack the protein dystrophin and are the smallest vertebrate model of Duchenne muscular dystrophy (DMD). Their small size makes them ideal for large-scale drug discovery screens. However, the extent that sapje mimic the muscle dysfunction of higher vertebrate models of DMD is unclear. We used an optical birefringence assay to differentiate affected dystrophic sapje larvae from their unaffected siblings and then studied trunk muscle contractility at 4-7 days postfertilization. Preparation cross-sectional area (CSA) was similar for affected and unaffected larvae, yet tetanic forces of affected preparations were only 30-60% of normal. ANCOVA indicated that the linear relationship observed between tetanic force and CSA for unaffected preparations was absent in the affected population. Consequently, the average force/CSA of affected larvae was depressed 30-70%. Disproportionate reductions in twitch vs. tetanic force, and a slowing of twitch tension development and relaxation, indicated that the myofibrillar disorganization evident in the birefringence assay could not explain the entire force loss. Single eccentric contractions, in which activated preparations were lengthened 5-10%, resulted in tetanic force deficits in both groups of larvae. However, deficits of affected preparations were three- to fivefold greater at all strains and ages, even after accounting for any recovery. Based on these functional assessments, we conclude that the sapje mutant zebrafish is a phenotypically severe model of DMD. The severe contractile deficits of sapje larvae represent novel physiological endpoints for therapeutic drug screening. Copyright © 2016 the American Physiological Society.

A Course To Prepare Peer Leaders To Implement a Student-Assisted Learning Method

NASA Astrophysics Data System (ADS)

Tien, Lydia T.; Roth, Vicki; Kampmeier, J. A.

2004-09-01

This article reports our efforts to develop a two-credit course to train undergraduate students to implement a new pedagogical model, Peer-Led Team Learning (PLTL). The leader training course is a collaborative effort of faculty and educational specialists to join pedagogy and chemistry. The syllabus is grounded in the research literature and situated in the context of the specific course in which the peer leaders will work, leading a weekly Workshop. Since the peer leaders take the training course while they are working as leaders, the pedagogical ideas find immediate application. We have taught the course since 1995 to more than 250 undergraduate and graduate students. In practice, our training course is the central mechanism to transform students from Workshop participants to skilled Workshop leaders. In turn, these carefully prepared peer leaders are essential forces for curricular change. In addition to the immediate practical benefits, the training course leads to new working relationships among students, faculty, and educational specialists. As a result, the training course becomes a mechanism to introduce current faculty to a new research literature and to encourage the development of future faculty.

CAD-based strength analysis of EK-18 excavator bucket construction for mounting of anti-adhesive devices

NASA Astrophysics Data System (ADS)

Zenkov, S. A.; Lobanov, D. V.

2018-03-01

3D rigid-body model of a bucket of power shovel EK-18 was built using modern CAD-software. Tetrahedral grid with 10-node second-order elements was chosen, and the given model was imported to APM WinMachine - model preparation preprocessor for finite element analysis. The finite element model was based on the geometrical model, imported from KOMPAS-3D to APM Studio. Calculation of stressed-strained state of the bucket was carried out under the forces emerging while digging with “back hoe” equipment. Shift, deformation and tension charts were planned and the most and the least strained areas were pointed out. Wet coherent soil excavation deals with soil adhesion to working bodies of power shovels and leads to reduced performance. The performance decrease is caused by a reduction of useful bucket capacity and partial unloading, increased front resistance to cutting (digging) caused by wet soil adhesion to a working body, increased bucket entry resistance, increased idle time caused by necessity to clean working bodies. Also energy losses increase and quality of work drops because friction forces go up. Friction force occurs while digging and levelling account for 30…70 percent of total digging resistance while performance decreases 1.2…2 times and more. Vibrothermal exposure creates new technological effect which involves a wider humidity range of efficient application and a reduction of friction forces. Disintegrating adhesion bonds with heating requires less driving force from the vibrator. Vibration boosts up heating of the contact layer, which reduces thermal energy losses. However, the question of piezoelectric ceramic actuators location on the excavator bucket needs to be dealt with. The most suitable spots for mounting piezoelectric ceramic devices for reducing soil adhesion to the excavator bucket were defined. Their efficiency is derived from combined (vibrothermal) methods of exposure. Such devices eliminates soil adhesion to the bucket and increases efficiency of using power shovels with wet coherent soils.

Flexible strain sensor based on carbon nanotube rubber composites

NASA Astrophysics Data System (ADS)

Kim, Jin-Ho; Kim, Young-Ju; Baek, Woon Kyung; Lim, Kwon Taek; Kang, Inpil

2010-04-01

Electrically conducting rubber composites (CRC) with carbon nanotubes (CNTs) filler have received much attention as potential materials for sensors. In this work, Ethylene propylene diene M-class rubber (EPDM)/CNT composites as a novel nano sensory material were prepared to develop flexible strain sensors that can measure large deformation of flexible structures. The EPDM/CNT composites were prepared by using a Brabender mixer with multi-walled CNTs and organo-clay. A strain sensor made of EPDM/CNT composite was attached to the surface of a flexible beam and change of resistance of the strain sensor was measured with respect to the beam deflection. Resistance of the sensor was change quite linearly under the bending and compressive large beam deflection. Upon external forces, CRC deformation takes place with the micro scale change of inter-electrical condition in rubber matrix due to the change of contact resistance, and CRC reveals macro scale piezoresistivity. It is anticipated that the CNT/EPDM fibrous strain sensor can be eligible to develop a biomimetic artificial neuron that can continuously sense deformation, pressure and shear force.

KSC-2014-2480

NASA Image and Video Library

2014-05-01

VANDENBERG AIR FORCE BASE, Calif. – In the Astrotech payload processing facility on Vandenberg Air Force Base in California, Orbital Sciences workers and technicians move their work platforms away from NASA's Orbiting Carbon Observatory-2, or OCO-2, in preparation for its lift from the transportation trailer. Testing and launch preparations now will get underway for its launch from Space Launch Complex 2 aboard a United Launch Alliance Delta II rocket, scheduled for July 1, 2014. The observatory will collect precise global measurements of carbon dioxide in the Earth's atmosphere and provide scientists with a better idea of the chemical compound's impacts on climate change. Scientists will analyze this data to improve our understanding of the natural processes and human activities that regulate the abundance and distribution of this important atmospheric gas. OCO-2 is a NASA Earth System Science Pathfinder Program mission managed by NASA's Jet Propulsion Laboratory JPL in Pasadena, California, for NASA's Science Mission Directorate in Washington. Orbital Sciences built the spacecraft and provides mission operations under JPL’s leadership. To learn more about OCO-2, visit http://oco.jpl.nasa.gov. Photo credit: NASA/Doug Gruben, 30th Space Wing

Quantum Dots obtained by LPE from under-saturated In-As liquid phases on GaAs substrates

NASA Astrophysics Data System (ADS)

Ortiz, F. E.; Mishurnyi, V.; Gorbatchev, A.; De Anda, F.; Prutskij, T.

2011-01-01

In this work we inform about quantum dots (QD) obtained by Liquid Phase Epitaxy (LPE) on GaAs substrates from under-saturated In-As liquid phases. In our processes, we have prepared saturated In-rich liquid phases by dissolving an InAs wafer at one of the temperatures interval from 450 to 414 C for 60 minutes. The contact between In-As liquid phase and the GaAs substrate was always done at a constant temperature of 444 C for 5 seconds. Thus, the growth temperature for most of the samples was higher than the liquidus temperature. We think that the growth driving force is related to a transient process that occurs when the system is trying to reach equilibrium. Under the atom force microscope (AFM) we have observed nano-islands on the surfaces of the samples obtained from under-saturated liquid phases prepared at 438, 432 and 426 C. The 25 K photoluminescence spectrum shows a peak at a 1.33 eV, in addition to the GaAs related line.

Neurophysiological Bases of Event-Related Potentials.

DTIC Science & Technology

1983-06-01

University Prepared for: AIR FORCE OFFICE OF SCIENTIFIC RESEARCH Life Sciences Directorate Boiling AFB, D.C. 20332 Attention: Dr. Alfred R. Fregly Program...Karl H. Pribram and Jeffrey E. Evans Stanford University Prepared for: AIR FORCE OFFICE OF SCIENTIFIC RESEARCH Life Sciences Directorate Bollinq AFB...CONTROLLING OFFICE NAME AND ADDRESS June 1983 I W Air Force Office of Scientific Research /Nt 15. SECURITY CLASS. (01 this report) Bolling AFB, D.C

Advances in Software Tools for Pre-processing and Post-processing of Overset Grid Computations

NASA Technical Reports Server (NTRS)

Chan, William M.

2004-01-01

Recent developments in three pieces of software for performing pre-processing and post-processing work on numerical computations using overset grids are presented. The first is the OVERGRID graphical interface which provides a unified environment for the visualization, manipulation, generation and diagnostics of geometry and grids. Modules are also available for automatic boundary conditions detection, flow solver input preparation, multiple component dynamics input preparation and dynamics animation, simple solution viewing for moving components, and debris trajectory analysis input preparation. The second is a grid generation script library that enables rapid creation of grid generation scripts. A sample of recent applications will be described. The third is the OVERPLOT graphical interface for displaying and analyzing history files generated by the flow solver. Data displayed include residuals, component forces and moments, number of supersonic and reverse flow points, and various dynamics parameters.

The length-force behavior and operating length range of squid muscle vary as a function of position in the mantle wall.

PubMed

Thompson, Joseph T; Shelton, Ryan M; Kier, William M

2014-06-15

Hollow cylindrical muscular organs are widespread in animals and are effective in providing support for locomotion and movement, yet are subject to significant non-uniformities in circumferential muscle strain. During contraction of the mantle of squid, the circular muscle fibers along the inner (lumen) surface of the mantle experience circumferential strains 1.3 to 1.6 times greater than fibers along the outer surface of the mantle. This transmural gradient of strain may require the circular muscle fibers near the inner and outer surfaces of the mantle to operate in different regions of the length-tension curve during a given mantle contraction cycle. We tested the hypothesis that circular muscle contractile properties vary transmurally in the mantle of the Atlantic longfin squid, Doryteuthis pealeii. We found that both the length-twitch force and length-tetanic force relationships of the obliquely striated, central mitochondria-poor (CMP) circular muscle fibers varied with radial position in the mantle wall. CMP circular fibers near the inner surface of the mantle produced higher force relative to maximum isometric tetanic force, P0, at all points along the ascending limb of the length-tension curve than CMP circular fibers near the outer surface of the mantle. The mean ± s.d. maximum isometric tetanic stresses at L₀ (the preparation length that produced the maximum isometric tetanic force) of 212 ± 105 and 290 ± 166 kN m(-2) for the fibers from the outer and inner surfaces of the mantle, respectively, did not differ significantly (P=0.29). The mean twitch:tetanus ratios for the outer and inner preparations, 0.60 ± 0.085 and 0.58 ± 0.10, respectively, did not differ significantly (P=0.67). The circular fibers did not exhibit length-dependent changes in contraction kinetics when given a twitch stimulus. As the stimulation frequency increased, L₀ was approximately 1.06 times longer than LTW, the mean preparation length that yielded maximum isometric twitch force. Sonomicrometry experiments revealed that the CMP circular muscle fibers operated in vivo primarily along the ascending limb of the length-tension curve. The CMP fibers functioned routinely over muscle lengths at which force output ranged from only 85% to 40% of P₀, and during escape jets from 100% to 30% of P₀. Our work shows that the functional diversity of obliquely striated muscles is much greater than previously recognized. © 2014. Published by The Company of Biologists Ltd.

Toward a unified system of accreditation for professional preparation in health education: final report of the National Task Force on Accreditation in Health Education.

PubMed

Allegrante, John P; Airhihenbuwa, Collins O; Auld, M Elaine; Birch, David A; Roe, Kathleen M; Smith, Becky J

2004-12-01

During the past 40 years, health education has taken significant steps toward improving quality assurance in professional preparation through individual certification and program approval and accreditation. Although the profession has begun to embrace individual certification, program accreditation in health education has been neither uniformly available nor universally accepted by institutions of higher education. To further strengthen professional preparation in health education, the Society for Public Health Education (SOPHE) and the American Association for Health Education (AAHE) established the National Task Force on Accreditation in Health Education in 2001. The 3-year Task Force was charged with developing a detailed plan for a coordinated accreditation system for undergraduate and graduate programs in health education. This article summarizes the Task Force's findings and recommendations, which have been approved by the SOPHE and AAHE boards, and, if implemented, promise to lay the foundation for the highest quality professional preparation and practice in health education.

Strontium eluting graphene hybrid nanoparticles augment osteogenesis in a 3D tissue scaffold

NASA Astrophysics Data System (ADS)

Kumar, Sachin; Chatterjee, Kaushik

2015-01-01

The objective of this work was to prepare hybrid nanoparticles of graphene sheets decorated with strontium metallic nanoparticles and demonstrate their advantages in bone tissue engineering. Strontium-decorated reduced graphene oxide (RGO_Sr) hybrid nanoparticles were synthesized by the facile reduction of graphene oxide and strontium nitrate. X-ray diffraction, transmission electron microscopy, and atomic force microscopy revealed that the hybrid particles were composed of RGO sheets decorated with 200-300 nm metallic strontium particles. Thermal gravimetric analysis further confirmed the composition of the hybrid particles as 22 wt% of strontium. Macroporous tissue scaffolds were prepared by incorporating RGO_Sr particles in poly(ε-caprolactone) (PCL). The PCL/RGO_Sr scaffolds were found to elute strontium ions in aqueous medium. Osteoblast proliferation and differentiation was significantly higher in the PCL scaffolds containing the RGO_Sr particles in contrast to neat PCL and PCL/RGO scaffolds. The increased biological activity can be attributed to the release of strontium ions from the hybrid nanoparticles. This study demonstrates that composites prepared using hybrid nanoparticles that elute strontium ions can be used to prepare multifunctional scaffolds with good mechanical and osteoinductive properties. These findings have important implications for designing the next generation of biomaterials for use in tissue regeneration.The objective of this work was to prepare hybrid nanoparticles of graphene sheets decorated with strontium metallic nanoparticles and demonstrate their advantages in bone tissue engineering. Strontium-decorated reduced graphene oxide (RGO_Sr) hybrid nanoparticles were synthesized by the facile reduction of graphene oxide and strontium nitrate. X-ray diffraction, transmission electron microscopy, and atomic force microscopy revealed that the hybrid particles were composed of RGO sheets decorated with 200-300 nm metallic strontium particles. Thermal gravimetric analysis further confirmed the composition of the hybrid particles as 22 wt% of strontium. Macroporous tissue scaffolds were prepared by incorporating RGO_Sr particles in poly(ε-caprolactone) (PCL). The PCL/RGO_Sr scaffolds were found to elute strontium ions in aqueous medium. Osteoblast proliferation and differentiation was significantly higher in the PCL scaffolds containing the RGO_Sr particles in contrast to neat PCL and PCL/RGO scaffolds. The increased biological activity can be attributed to the release of strontium ions from the hybrid nanoparticles. This study demonstrates that composites prepared using hybrid nanoparticles that elute strontium ions can be used to prepare multifunctional scaffolds with good mechanical and osteoinductive properties. These findings have important implications for designing the next generation of biomaterials for use in tissue regeneration. Electronic supplementary information (ESI) available. See DOI: 10.1039/c4nr05060f

Hang Them High: A Hands-Free Technique for Upper Extremity Limb Holding During Surgical Preparation.

PubMed

Aneja, Arun; Leung, Patrick; Marquez-Lara, Alejandro

Lifting and holding upper and lower limbs during the "prep and drape" portion of certain orthopaedic procedures exert strong forces on the holder and may lead to musculoskeletal disorders. To address these challenges during upper extremity procedures, this article describes a hand-free elevation and traction technique of the upper limbs during preoperative skin preparation with the use of items readily available within the operating room (OR). This technique is particularly useful for heavy or fractured limbs that may impose a physical challenge to lift and maintain in a stable position. Implementation of this technique reduces the risk to nurses, OR personnel, and caregivers of developing work-related musculoskeletal injuries while lifting and holding limbs in the orthopaedic OR.

Results of a national survey indicating information technology skills needed by nurses at time of entry into the work force.

PubMed

McCannon, Melinda; O'Neal, Pamela V

2003-08-01

A national survey was conducted to determine the information technology skills nurse administrators consider critical for new nurses entering the work force. The sample consisted of 2,000 randomly selected members of the American Organization of Nurse Executives. Seven hundred fifty-two usable questionnaires were returned, for a response rate of 38%. The questionnaire used a 5-point Likert scale and consisted of 17 items that assessed various technology skills and demographic information. The questionnaire was developed and pilot tested with content experts to establish content validity. Descriptive analysis of the data revealed that using e-mail effectively, operating basic Windows applications, and searching databases were critical information technology skills. The most critical information technology skill involved knowing nursing-specific software, such as bedside charting and computer-activated medication dispensers. To effectively prepare nursing students with technology skills needed at the time of entry into practice, nursing faculty need to incorporate information technology skills into undergraduate nursing curricula.

1997 Savannah River Site annual epidemiologic surveillance report

DOE Office of Scientific and Technical Information (OSTI.GOV)

None

This report provides a summary of epidemiologic surveillance data collected from Savannah River Site from January 1, 1997 through December 31, 1997. The data were collected by a coordinator at Savannah River Site and submitted to the Epidemiologic Surveillance Data Center located at Oak Ridge Institute for Science and Education, where quality control procedures and preliminary data analyses were carried out. The analyses were interpreted and the final report prepared by the DOE Office of Epidemiologic Studies. The information in this report provides highlights of the data analyses conducted on the 1997 data collected from Savannah River Site. The mainmore » sections of the report include: work force characteristics; absences due to injury or illness lasting 5 or more consecutive workdays; workplace illnesses, injuries, and deaths that were reportable to the Occupational Safety and Health Administration (''OSHA-recordable'' events); and disabilities and deaths among current workers. The 199 7 report includes a section on time trends that provides comparative information on the health of the work force from 1994 through 1997.« less

1996 Savannah River Site annual epidemiologic surveillance report

DOE Office of Scientific and Technical Information (OSTI.GOV)

None

This report provides a summary of epidemiologic surveillance data collected from Savannah River Site from January 1, 1996 through December 31, 1996. The data were collected by a coordinator at Savannah River Site and submitted to the Epidemiologic Surveillance Data Center located at Oak Ridge Institute for Science and Education, where quality control procedures and preliminary data analyses were carried out. The analyses were interpreted and the final report prepared by the DOE Office of Epidemiologic Studies. The information in this report provides highlights of the data analyses conducted on the 1996 data collected from Savannah River Site. The mainmore » sections of the report include: work force characteristics; absences due to injury or illness lasting 5 or more consecutive workdays; workplace illnesses, injuries, and deaths that were reportable to the Occupational Safety and Health Administration (''OSHA-recordable'' events); and disabilities and deaths among current workers. The 1996 report includes a new section on time trends that provides comparative information on the health of the work force from 1994 through 1996.« less

SPIN-UP and Preparing Undergraduate Physics Majors for Careers in Industry

NASA Astrophysics Data System (ADS)

Howes, Ruth

2011-03-01

Seven years ago, the Strategic Programs for Innovations in Undergraduate Physics (SPIN-UP) Report produced by the National Task Force on Undergraduate Physics identified several key characteristics of thriving undergraduate physics departments including steps these departments had taken to prepare students better for careers in industry. Today statistical data from AIP shows that almost 40% of students graduating with a degree in physics seek employment as soon as they graduate. Successful undergraduate physics programs have taken steps to adapt their rigorous physics programs to ensure that graduating seniors have the skills they need to enter the industrial workplace as well as to go on to graduate school in physics. Typical strategies noted during a series of SPIN-UP workshops funded by a grant from NSF to APS, AAPT, and AIP include flexible curricula, early introduction of undergraduates to research techniques, revised laboratory experiences that provide students with skills they need to move directly into jobs, and increased emphasis on ``soft'' skills such as communication and team work. Despite significant success, undergraduate programs face continuing challenges in preparing students to work in industry, most significantly the fact that there is no job called ``physicist'' at the undergraduate level. supported by grant NSF DUE-0741560.

Enhancement and Prediction of Adhesion Strength of Copper Cold Spray Coatings on Steel Substrates for Nuclear Fuel Repository

NASA Astrophysics Data System (ADS)

Fernández, R.; MacDonald, D.; Nastić, A.; Jodoin, B.; Tieu, A.; Vijay, M.

2016-12-01

Thick copper coatings have been envisioned as corrosion protection barriers for steel containers used in repositories for nuclear waste fuel bundles. Due to its high deposition rate and low oxidation levels, cold spray is considered as an option to produce these coatings as an alternative to traditional machining processes to create corrosion protective sleeves. Previous investigations on the deposition of thick cold spray copper coatings using only nitrogen as process gas on carbon steel substrates have continuously resulted in coating delamination. The current work demonstrates the possibility of using an innovative surface preparation process, forced pulsed waterjet, to induce a complex substrate surface morphology that serves as anchoring points for the copper particles to mechanically adhere to the substrate. The results of this work show that, through the use of this surface preparation method, adhesion strength can be drastically increased, and thick copper coatings can be deposited using nitrogen. Through finite element analysis, it was shown that it is likely that the bonding created is purely mechanical, explaining the lack of adhesion when conventional substrate preparation methods are used and why helium is usually required as process gas.

Activity in the premotor area related to bite force control--a functional near-infrared spectroscopy study.

PubMed

Takeda, Tomotaka; Shibusawa, Mami; Sudal, Osamu; Nakajima, Kazunori; Ishigami, Keiichi; Sakatani, Kaoru

2010-01-01

The purpose of this study was to elucidate the influence of bite force control on oxygenated hemoglobin (OxyHb) levels in regional cerebral blood flow as an indicator of brain activity in the premotor area. Healthy right-handed volunteers with no subjective or objective symptoms of problems of the stomatognathic system or cervicofacial region were included. Functional near-infrared spectroscopy (fNIRS) was used to determine OxyHb levels in the premotor area during bite force control. A bite block equipped with an occlusal force sensor was prepared to measure clenching at the position where the right upper and lower canine cusps come into contact. Intensity of clenching was shown on a display and feedback was provided to the subjects. Intensity was set at 20, 50 and 80% of maximum voluntary teeth clenching force. To minimize the effect of the temporal muscle on the working side of the jaw, the fNIRS probes were positioned contralaterally, in the left region. The findings of this study are: activation of the premotor area with bite force control was noted in all subjects, and in the group analysis OxyHb in the premotor cortex was significantly increased as the clenching strengthened at 20, 50 and 80% of maximum voluntary clenching force. These results suggest there is a possibility that the premotor area is involved in bite force control.

Army Installations Water Sustainability Assessment: An Evaluation of Vulnerability to Water Supply

DTIC Science & Technology

2009-09-01

del Norte Water Task Force PM particulate matter PNNL Pacific Northwest National Laboratory PWC Public Works Commission PWD RFTA RSC Regional...ct io n E n gi n ee ri n g R es ea rc h L ab or at or y Approved for public release; distribution is unlimited. ERDC/CERL TR-09-38...and Ryan Holmes University of Illinois at Urbana-Champaign Final Report Approved for public release; distribution is unlimited. Prepared for U.S

KSC-2011-3307

NASA Image and Video Library

2011-04-27

CAPE CANAVERAL, Fla. -- Technicians work with processing hardware for the Falcon 9 rocket in the Space Exploration Technologies (SpaceX) hangar at Launch Complex 40 at Cape Canaveral Air Force Station in Florida. Technicians are preparing the rocket for the second launch in the Commercial Orbital Transportation Services, or COTS, program to demonstrate private companies' ability to launch uncrewed spacecraft into orbit. A follow-on contract, Commercial Resupply Services, calls for SpaceX to launch 12 resupply missions to the International Space Station between 2011 and 2015. Photo credit: NASA/Jack Pfaller

The ISO Standard Guide for the Evaluation of Human Exposure to Whole- Body Vibration

DTIC Science & Technology

1975-11-01

Wright-Patterson Air Force Base AFTER 10 YEARS of intensive work of Subcom- broad support for a document, which tries to mittee 4, "Human Expost -re to...The ISO member ber of clarifying studies directed to fill in bodies of 20 countries interested in this sub- gaps in our krowledge or to support or...standard. As Chairman of the tions incorporating the all-important expo- ISO subcommittee, which prepared this document, sure time as a factor . I can

78 FR 48862 - Intent To Prepare an Environmental Impact Statement for the Gulf Regional Airspace Strategic...

Federal Register 2010, 2011, 2012, 2013, 2014

2013-08-12

... DEPARTMENT OF DEFENSE Department of Air Force Intent To Prepare an Environmental Impact Statement for the Gulf Regional Airspace Strategic Initiative (GRASI) Landscape Initiative AGENCY: Department of... Airspace Strategic Initiative (GRASI) Landscape Initiative (GLI) is a U.S Air Force-led partnership with...

Stretching of Single Polymer Chains Using the Atomic Force Microscope

NASA Astrophysics Data System (ADS)

Ortiz, C.; van der Vegte, E. W.; van Swieten, E.; Robillard, G. T.; Hadziioannou, G.

1998-03-01

A variety of macroscopic phenomenon involve "nanoscale" polymer deformation including rubber elasticity, shear yielding, strain hardening, stress relaxation, fracture, and flow. With the advent of new and improved experimental techniques, such as the atomic force microscope (AFM), the probing of physical properties of polymers has reached finer and finer scales. The development of mixed self-assembling monolayer techniques and the chemical functionalization of AFM probe tips has allowed for mechanical experiments on single polymer chains of molecular dimensions. In our experiments, mixed monolayers are prepared in which end-functionalized, flexible polymer chains of thiol-terminated poly(methacrylic acid) are covalently bonded, isolated, and randomly distributed on gold substrates. The coils are then imaged, tethered to a gold-coated AFM tip, and stretched between the tip and the substrate in a conventional force / distance experiment. An increase in the attractive force due to entropic, elastic resistance to stretching, as well as fracture of the polymer chain is observed. The effect of chain stiffness, topological constraints, strain rate, mechanical hysteresis, and stress relaxation were investigated. Force modulation techniques were also employed in order to image the viscoelastic character of the polymer chains. Parallel work includes similar studies of biological systems such as wheat gluten proteins and polypeptides.

Installation Restoration Program Phase 2. Confirmation/Quantification. Stage 2. Volume 2. Tyndall Air Force Base, Florida

DTIC Science & Technology

1988-08-01

control data (lat tarK., lab spikes, and lab duplicates) in the report , as well as field quality control data. j. For those metiods which employ gas ...FORCE BASE, TEXAS 78235-5501 NOTICE This report has been prepared for the United States Air Force by Environmental Science and Engineering , Inc. (ESE...testing, field sampling, contamination assessment report preparation, and recommendations for remedial actions. U.S. Army Toxic and Hazardous Materials

Scanning Probe Microscopy for Identifying the Component Materials of a Nanostripe Structure

NASA Astrophysics Data System (ADS)

Mizuno, Akira; Ando, Yasuhisa

2010-08-01

The authors prepared a nanostripe structure in which two types of metal are arranged alternately, and successfully identified the component materials using scanning probe microscopy (SPM) to measure the lateral force distribution image. The nanostripe structure was prepared using a new method developed by the authors and joint development members. The lateral force distribution image was measured in both friction force microscopy (FFM) and lateral modulation friction force microscopy (LM-FFM) modes. In FFM mode, the effect of slope angle appeared in the lateral force distribution image; therefore, no difference in the type of material was observed. On the other hand, in LM-FFM mode, the effect of surface curvature was observed in the lateral force distribution image. A higher friction force on chromium than on gold was identified, enabling material identification.

Air Force Research Laboratory Preparation for Year 2000.

DTIC Science & Technology

1998-10-05

Air Force Research Laboratory , Phillips Research Site , Kirkland Air Force Base, New...Pentagon, Washington, D.C. 20301-1900. The identity of each writer and caller is fully protected. Acronym AFRL Air Force Research Laboratory INSPECTOR...completion of the implementation phase was May 31, 1999. Air Force Research Laboratory . The Air Force Research

Building a Well-Prepared Languages Teaching Force: Turkish Teacher Perspectives

ERIC Educational Resources Information Center

Beykont, Zeynep F.

2012-01-01

Teacher quality is a central issue in the provision of languages. This paper reports on a study that examines teachers' perceptions of the obstacles to creating a well-prepared and wellsupported languages teaching force. In one-on-one interviews, teachers of Turkish in Australia identified the essential knowledge base, understanding, and skills of…

Employer Perception of the Preparation of Agricultural and Extension Education Graduates.

ERIC Educational Resources Information Center

Graham, Donna L.

Educational reform measures have forced schools to form partnerships with business and industry to achieve common goals of a prepared workforce. These partnerships have forced colleges of agriculture to examine its mission and update the curriculum. This study sought to provide benchmark data from employers on the skills and abilities deemed…

Engineer Company Force Structure Force Modularization in Support of Decisive Action. Does the Corps of Engineers Need to Re-Structure Engineer Construction Companies Again in order to Support Decisive Actions?

DTIC Science & Technology

2012-05-16

Regional Command RCP Route Clearance Platoon RSOI Reception, Staging, Onward Movement, Integration SBCT Stryker Brigade Combat Team TOE Table of...Point (ASPs), and field hospital platforms; prepare river crossing sites; and support port repair due to Hydraulic Excavator (HYEX), provides force...platforms, FARPS, supply routes, roads, control points, fire bases, tank ditches, ASPs, and field hospital platforms; prepare river crossing sites; and

Myocardial short-range force responses increase with age in F344 rats

PubMed Central

Mitov, Mihail I.; Holbrook, Anastasia M.; Campbell, Kenneth S.

2009-01-01

The mechanical properties of triton-permeabilized ventricular preparations isolated from 4, 18 and 24-month-old F344 rats were analyzed to provide information about the molecular mechanisms that lead to age-related increases in diastolic myocardial stiffness in these animals. Passive stiffness (measured in solutions with minimal free Ca2+) did not change with age. This implies that the aging-associated dysfunction is not due to changes in titin or collagen molecules. Ca2+-activated preparations exhibited a characteristic short-range force response: force rose rapidly until the muscle reached its elastic limit and less rapidly thereafter. The elastic limit increased from 0.43 ± 0.01 % l0 (where l0 is the initial muscle length) in preparations from 4-month-old animals to 0.49 ± 0.01 % l0 in preparations from 24-month-old rats (p<0.001, ANOVA). Relative short-range force was defined as the maximum force produced during the short-range response normalized to the prevailing tension. This parameter increased from 0.110 ± 0.002 to 0.142 ± 0.002 over the same age-span (p<0.001, ANOVA). Analytical gel electrophoresis showed that the maximum stiffness of the preparations during the short-range response and the relative short-range force increased (p=0.031 and p=0.005 respectively) with the relative content of slow β myosin heavy chain molecules. Elastic limit values did not correlate with myosin isoform content. Simulations based on these results suggest that attached β myosin heavy chain cross-bridges are stiffer than links formed by α myosin heads. In conclusion, elevated content of stiffer β myosin heavy chain molecules may contribute to aging-associated increases in myocardial stiffness. PMID:19007786

Collaborative Modeling: Experience of the U.S. Preventive Services Task Force.

PubMed

Petitti, Diana B; Lin, Jennifer S; Owens, Douglas K; Croswell, Jennifer M; Feuer, Eric J

2018-01-01

Models can be valuable tools to address uncertainty, trade-offs, and preferences when trying to understand the effects of interventions. Availability of results from two or more independently developed models that examine the same question (comparative modeling) allows systematic exploration of differences between models and the effect of these differences on model findings. Guideline groups sometimes commission comparative modeling to support their recommendation process. In this commissioned collaborative modeling, modelers work with the people who are developing a recommendation or policy not only to define the questions to be addressed but ideally, work side-by-side with each other and with systematic reviewers to standardize selected inputs and incorporate selected common assumptions. This paper describes the use of commissioned collaborative modeling by the U.S. Preventive Services Task Force (USPSTF), highlighting the general challenges and opportunities encountered and specific challenges for some topics. It delineates other approaches to use modeling to support evidence-based recommendations and the many strengths of collaborative modeling compared with other approaches. Unlike systematic reviews prepared for the USPSTF, the commissioned collaborative modeling reports used by the USPSTF in making recommendations about screening have not been required to follow a common format, sometimes making it challenging to understand key model features. This paper presents a checklist developed to critically appraise commissioned collaborative modeling reports about cancer screening topics prepared for the USPSTF. Copyright © 2017 American Journal of Preventive Medicine. All rights reserved.

Fracture resistance of five pin-retained core build-up materials on teeth with and without extracoronal preparation.

PubMed

Burke, F J; Shaglouf, A G; Combe, E C; Wilson, N H

2000-01-01

Core build-ups should provide satisfactory strength and resistance to fracture both before and after crown preparation. This paper examines the resistance to fracture of core build-ups in different materials and the fracture resistance of core build-ups when these have been reduced for full crown preparation. Standardized core build-ups were made on groups of extracted molar teeth of similar size, with 10 teeth per group. Three resin-composite (prisma APH: Dentsply, Weybridge, UK; Ti-Core, Essential Dental Systems, NJ, US and Coradent, Vivadent, Liechtenstein), one cermet (Ketac-Silver, ESPE GmbH, Seefeld, Germany) and one amalgam material (Duralloy, Degussa Ltd, Cheshire, UK). These specimens were subjected to compressive force on a universal testing machine and the force at fracture noted. Standardized full crown preparations were made on a further five groups of core build-up specimens using the same materials as above. These prepared specimens were subjected to compressive force on a universal testing machine and the force to fracture noted. The results indicated that amalgam core build-ups demonstrated higher fracture resistance than the other materials examined. There was a general decrease in the fracture strength of the specimens following crown preparation, with the teeth restored with the amalgam core build-ups showing a greater percentage reduction in fracture strength than the other materials tested. Prepared core build-ups in a hybrid composite material provided the highest fracture resistance. The cermet material used provided the lowest resistance to fracture in both the core build-up and crown preparation specimens. In terms of fracture resistance, no advantage was apparent in using the two composite materials designated as being specifically appropriate for core build-ups.

Transforce lingual appliances pre-adjusted invisible appliances simplify treatment.

PubMed

Clark, William John

2011-01-01

Transforce lingual appliances are designed to be used in conjunction with conventional fixed appliances. Lingual arch development is normally followed by bonded fixed appliances to detail the occlusion. Alternatively Transforce appliance treatment is an efficient method of preparing complex malocclusions prior to a finishing stage with invisible appliances. This approach is ideal for adult treatment, using light continuous forces for arch development with appliances that are comfortable to wear. Sagittal and Transverse appliances are designed for arch development in a range of sizes for contracted arches. They can be used to treat all classes of malocclusion and are pre-adjusted fixed/removable devices for non-compliance treatment. Force modules with nickel titanium coil springs enclosed in a tube deliver a gentle, biocompatible continuous force with a long range of action. They are excellent for mixed dentition and ideal for adult arch development. There are multiple sizes for upper and lower arch development and a sizing chart may be placed over a study model for correct selection, eliminating the need for laboratory work.

2013 Review and Update of the Genetic Counseling Practice Based Competencies by a Task Force of the Accreditation Council for Genetic Counseling.

PubMed

Doyle, Debra Lochner; Awwad, Rawan I; Austin, Jehannine C; Baty, Bonnie J; Bergner, Amanda L; Brewster, Stephanie J; Erby, Lori A H; Franklin, Cathi Rubin; Greb, Anne E; Grubs, Robin E; Hooker, Gillian W; Noblin, Sarah Jane; Ormond, Kelly E; Palmer, Christina G; Petty, Elizabeth M; Singletary, Claire N; Thomas, Matthew J; Toriello, Helga; Walton, Carol S; Uhlmann, Wendy R

2016-10-01

The first practice based competencies (PBCs) for the field of genetic counseling were adopted by the American Board of Genetic Counseling (ABGC), 1996. Since that time, there has been significant growth in established and new work settings (clinical and non-clinical) and changes in service delivery models and the roles of genetic counselors. These changes prompted the ABGC to appoint a PBC Task Force in 2011 to review the PBCs with respect to their current relevance and to revise and update them as necessary. There are four domains in the revised PBCs: (I) Genetics Expertise and Analysis (II) Interpersonal, Psychosocial and Counseling Skills (III) Education and (IV) Professional Development and Practice. There are 22 competencies, each clarified with learning objectives or samples of activities and skills; a glossary is included. New competencies were added that address genomics, genetic testing and genetic counselors' roles in risk assessment, education, supervision, conducting research and presenting research options to patients. With PBCs serving as the pre-defined abilities or outcomes of training, graduating genetic counselors will be well prepared to enter the field with a minimum level of skills and abilities. A description of the Task Force's work, key changes and the 2013 PBCs are presented herein.

The Case for Decision-Forcing Cases: Preparing Teachers for EFL Settings.

ERIC Educational Resources Information Center

Jackson, Jane

2000-01-01

Focuses on the role that cases can play in preparing English-as-a-foreign-language teachers for the linguistic, cultural, and pedagogical realities of teaching English in an unfamiliar sociocultural setting. Describes some of the benefits of a case-based approach in TEFL teacher development programs. Offers a definition of decision-forcing cases…

In Vitro Evaluation and Mechanism Analysis of the Fiber Shedding Property of Textile Pile Debridement Materials

PubMed Central

Fu, Yijun; Xie, Qixue; Lao, Jihong; Wang, Lu

2016-01-01

Fiber shedding is a critical problem in biomedical textile debridement materials, which leads to infection and impairs wound healing. In this work, single fiber pull-out test was proposed as an in vitro evaluation for the fiber shedding property of a textile pile debridement material. Samples with different structural design (pile densities, numbers of ground yarns and coating times) were prepared and estimated under this testing method. Results show that single fiber pull-out test offers an appropriate in vitro evaluation for the fiber shedding property of textile pile debridement materials. Pull-out force for samples without back-coating exhibited a slight escalating trend with the supplement in pile density and number of ground yarn plies, while back-coating process significantly raised the single fiber pull-out force. For fiber shedding mechanism analysis, typical pull-out behavior and failure modes of the single fiber pull-out test were analyzed in detail. Three failure modes were found in this study, i.e., fiber slippage, coating point rupture and fiber breakage. In summary, to obtain samples with desirable fiber shedding property, fabric structural design, preparation process and raw materials selection should be taken into full consideration. PMID:28773428

Air Force Weapons Laboratory Computational Requirements for 1976 Through 1980

DTIC Science & Technology

1976-01-01

Air Force Weapons Laboratory , Attn: DYS, Kirtland AFB, NM 87117...final report was prepared by the Air Force Weapons Laboratory , Kirtland Air Force Base, New Mexico under Job Order 06CB. Dr. Clifford E. Rhoades, Jr... Force Base, New Mexico 87117 62601F, 06CB II. CONTROLLING OFFICE NAME AND ADDRESS Ai"- Force Weapons Laboratory / Jan 1076 Kirtland Air Force Base,

Separating the influence of electric charges in magnetic force microscopy images of inhomogeneous metal samples

NASA Astrophysics Data System (ADS)

Arenas, Mónica P.; Lanzoni, Evandro M.; Pacheco, Clara J.; Costa, Carlos A. R.; Eckstein, Carlos B.; de Almeida, Luiz H.; Rebello, João M. A.; Deneke, Christoph F.; Pereira, Gabriela R.

2018-01-01

In this study, we investigate artifacts arising from electric charges present in magnetic force microscopy images. Therefore, we use two austenitic steel samples with different microstructural conditions. Furthermore, we examine the influence of the surface preparation, like etching, in magnetic force images. Using Kelvin probe force microscopy we can quantify the charges present on the surface. Our results show that electrical charges give rise to a signature in the magnetic force microscopy, which is indistinguishable from a magnetic signal. Our results on two differently aged steel samples demonstrate that the magnetic force microscopy images need to be interpreted with care and must be corrected due to the influence of electrical charges present. We discuss three approaches, how to identify these artifacts - parallel acquisition of magnetic force and electric force images on the same position, sample surface preparation to decrease the presence of charges and inversion of the magnetic polarization in two succeeding measurement.

Preparing students with disabilities to transition from school to work through self-determination training.

PubMed

Gragoudas, Stelios

2014-01-01

It seems as if youth with disabilities are not graduation high school with the skills that they need to secure employment once they graduate. Particular, they are not graduating with self-determination skills. Instruction in self-determination skills enable youth to be leaders in their own lives and make decisions that will shape their future. This is especially true as they are transitioning from school to the workforce. Youth with disabilities must have a clear understanding of their abilities and be able to identify and request, and advocate for reasonable accommodations in the workplace. In addition, they must be prepared to negotiate how the accommodations are going to be presented within the work setting. To present an overview of the literature that will demonstrate that self-determination skills are essential to youth with disabilities finding and securing employment. An Eric and psycinfo Internet search was performed to gather articles and books concerning self-determination. The results section includes a number of strategies that teachers and practitioners can use directly with their students and their clients. In conclusion, by incorporating self-determination skills training into the curriculum for transition-aged youth with disabilities they will be prepared to enter and succeed in the labor force.

Impact of Robots and Computers on the Workforce of the 1980's. Hearings before the Subcommittee on General Oversight and the Economy of the Committee on Small Business. House of Representatives, Ninety-Eighth Congress, First Session (May 17 and 18, 1983).

ERIC Educational Resources Information Center

Congress of the U.S., Washington, DC. House Committee on Small Business.

This document is a transcript of a Congressional hearing held in May 1983 to discuss the impact of robots and computers on the work force of the 1980s. At the hearing, testimony was given and prepared statements were recorded from more than a dozen persons representing universities, technological industries, government and private agencies that…

Health services at the Kennedy Space Center

NASA Technical Reports Server (NTRS)

Ferguson, E. B.; Humbert, P.; Long, I. D.; Tipton, D. A.

1992-01-01

Comprehensive occupational health services are provided to approximately 17,000 workers at the Kennedy Space Center and an additional 6000 on Cape Canaveral Air Force Station. These areas cover about 120,000 acres encompassing part of the Merritt Island Wild Life Refuge and wetlands which are the habitat of numerous endangered and protected species of wildlife. The services provided at the Kennedy Space Center optimally assure a safe and healthy working environment for the employees engaged in the preparation and launching of this country's Space Shuttle and other important space exploration programs.

KSC-03PD-0514

NASA Technical Reports Server (NTRS)

2003-01-01

KENNEDY SPACE CENTER, FLA. - At NASA's Family & Community Mars Exploration Day held in Cape Canaveral, Fla., students look at a remote-controlled model of the Mars Exploration Rover. The event informed students and the general public about Florida's key role as NASA's 'Gateway to Mars' and offered an opportunity to meet with scientists, engineers, educators and others working Mars exploration missions. The Mars Exploration Rovers are being prepared for launch this spring aboard Boeing Delta II rockets from the Cape Canaveral Air Force Station. They will land on Mars and start exploring in January 2004.

KSC-03pd0514

NASA Image and Video Library

2003-02-19

KENNEDY SPACE CENTER, FLA. - At NASA's Family & Community Mars Exploration Day held in Cape Canaveral, Fla., students look at a remote-controlled model of the Mars Exploration Rover. The event informed students and the general public about Florida's key role as NASA's "Gateway to Mars" and offered an opportunity to meet with scientists, engineers, educators and others working Mars exploration missions. The Mars Exploration Rovers are being prepared for launch this spring aboard Boeing Delta II rockets from the Cape Canaveral Air Force Station. They will land on Mars and start exploring in January 2004.

REPORT ON ACTIVITY OF TASK FORCE 1 IN THE LIFE CYCLE INVENTORY PROGRAMME: DATA REGISTRY - GLOBAL LIFE CYCLE INVENTORY DATA RESOURCES

EPA Science Inventory

This paper presents a summary of the findings of a report prepared by Task Force 1 of the UNEP/SETAC Life Cycle Initiative on the available Life Cycle Inventory (LCI) databases around the world. An update of a previous summary prepared in May 2002 by Norris and Notten, the repor...

Our Responsibility, Our Promise: Transforming Educator Preparation and Entry into the Profession

ERIC Educational Resources Information Center

Council of Chief State School Officers, 2012

2012-01-01

This report was written by the Task Force on Educator Preparation and Entry into the Profession. The task force is made up of current and former chiefs who are members of the Council of Chief State School Officers (CCSSO) with input from partners at the National Association of State Boards of Education (NASBE) and the National Governors…

Semiannual Business Research Report

DTIC Science & Technology

1976-09-30

SEMIANNUAL BUSINES! o CO o ISiARCI A Compendium Prepared By: Air Force Business Research Management Center i.: lit’ - * <■ .^-.V...B n ■ m 7 IJfT 30 SEPTEM3ER 1976 SEMIANNUAL BUSINESS RESEARCH REPORT A Compendium Prepared By: Air Force Business Research...Requirements** 2 Systems Requirements Management 6 II. Business Strategy . 8 Role of the Contracting Officer ...... 8 Acquisition Communication ... 9

PREFACE: NC-AFM 2003: Proceedings of the 6th International Conference on Non-contact Atomic Force Microscopy

NASA Astrophysics Data System (ADS)

Reichling, Michael

2004-02-01

Direct nanoscale and atomic resolution imaging is a key issue in nanoscience and nanotechnology. The invention of the dynamic force microscope in the early 1990s was an important step forward in this direction as this instrument provides a universal tool for measuring the topography and many other physical and chemical properties of surfaces at the nanoscale. Operation in the so-called non-contact mode now allows direct atomic resolution imaging of electrically insulating surfaces and nanostructures which has been an unsolved problem during the first decade of nanotechnology. Today, we face a most rapid development of the technique and an extension of its capabilities far beyond imaging; atomically resolved force spectroscopy provides information about local binding properties and researchers now develop sophisticated schemes of force controlled atomic manipulation with the tip of the force microscope. Progress in the field of non-contact force microscopy is discussed at the annually held NC-AFM conferences that are part of a series started in 1998 with a meeting in Osaka, Japan. The 6th International Conference on Non-contact Atomic Force Microscopy took place in Dingle, Ireland, from 31 August to 3 September 2003 and this special issue is a compilation of the original publications of work presented at this meeting. The papers published here well reflect recent achievements, current trends and some of the challenging new directions in non-contact force microscopy that have been discussed during the most stimulating conference days in Dingle. Fundamental aspects of forces and dissipation relevant in imaging and spectroscopy have been covered by experimental and theoretical contributions yielding a more detailed understanding of tip--surface interaction in force microscopy. Novel and improved imaging and spectroscopy techniques have been introduced that either improve the performance of force microscopy or pave the way towards new functionalities and applications. With regard to studies on the specific systems investigated, there was a strong emphasis on oxides and ionics, as well as on organic systems. Following previous pioneering work in uncovering the atomic structure of insulating oxides with force microscopy, it was shown in the meeting that this important class of materials is now accessible for a quantitative atomic scale surface characterization. Single organic molecules and ordered organic layers are building blocks for functional nanostructures currently developed in many laboratories for applications in molecular electronics and sensor technologies. The Dingle conference impressively demonstrated that dynamic force microscopy is ready for its application as an analytical tool for these promising future nanotechnologies. The meeting was a great success scientifically and participants enjoyed the beauty of the conference site. I would like to thank all members of the international steering committee, the programme committee and the co-chairs, J Pethica, A Shluger and G Thornton, for their efforts in preparing the meeting. The members of the local organising committee, J Ballentine-Armstrong, G Cross, S Dunne, S Jarvis and Ö Özer, kept the meeting running smoothly and created a very pleasant atmosphere. The generous financial support from Science Foundation Ireland (SFI), is greatly appreciated; SFI is dramatically raising the profile of Irish science. I would also like to express my sincere gratitude to N Couzin and the journal team from Institute of Physics Publishing for their editorial management and perfect co-operation in the preparation of this special issue.

Atomic Force Microscopy Techniques for Nanomechanical Characterization: A Polymeric Case Study

NASA Astrophysics Data System (ADS)

Reggente, Melania; Rossi, Marco; Angeloni, Livia; Tamburri, Emanuela; Lucci, Massimiliano; Davoli, Ivan; Terranova, Maria Letizia; Passeri, Daniele

2015-04-01

Atomic force microscopy (AFM) is a versatile tool to perform mechanical characterization of surface samples at the nanoscale. In this work, we review two of such methods, namely contact resonance AFM (CR-AFM) and torsional harmonics AFM (TH-AFM). First, such techniques are illustrated and their applicability on materials with elastic moduli in different ranges are discussed, together with their main advantages and limitations. Then, a case study is presented in which we report the mechanical characterization using both CR-AFM and TH-AFM of polyaniline and polyaniniline doped with nanodiamond particles tablets prepared by a pressing process. We determined the indentation modulus values of their surfaces, which were found in fairly good agreement, thus demonstrating the accuracy of the techniques. Finally, the determined surface elastic moduli have been compared with the bulk ones measured through standard indentation testing.

OCO-2 1st Stage Booster Preps

NASA Image and Video Library

2014-03-21

VANDENBERG AIR FORCE BASE, Calif. – A technician working inside the Delta first-stage booster for NASA's Orbiting Carbon Observatory-2 mission, or OCO-2, completes final tasks in preparation for its move from the Horizontal Integration Facility to Space Launch Complex 2 on Vandenberg Air Force Base in California. OCO-2 is scheduled to launch aboard a United Launch Alliance Delta II rocket in July. The observatory will collect precise global measurements of carbon dioxide in the Earth's atmosphere and provide scientists with a better idea of the chemical compound's impacts on climate change. Scientists will analyze this data to improve our understanding of the natural processes and human activities that regulate the abundance and distribution of this important atmospheric gas. To learn more about OCO-2, visit http://oco.jpl.nasa.gov. Photo credit: NASA/Randy Beaudoin

In situ nanomanipulators as a tool to separate individual tobermorite crystals for AFM studies.

PubMed

Yang, Tianhe; Holzer, Lorenz; Kägi, Ralf; Winnefeld, Frank; Keller, Bruno

2007-10-01

Atomic force microscopy (AFM) studies of cementitious materials are limited, mainly due to the lack of appropriate sample preparation techniques. In porous autoclaved aerated concrete (AAC), calcium silicate hydrate (C-S-H) is produced in its crystalline form, tobermorite. The crystals are lath-like with a length of several micrometers. In this work, we demonstrate the application of nanomanipulators to separate an individual tobermorite crystal from the bulk AAC for subsequent AFM investigations. The nanomanipulators are operated directly in an environmental scanning electron microscope (ESEM). We studied the interaction between moisture and the tobermorite surface under controlled relative humidity (RH). The results of topography and adhesion force measurements with AFM suggest that the surface of tobermorite is hydrophobic, which contrasts the macroscopic material properties (e.g. moisture transport in capillary pores).

Screw-in forces during instrumentation by various file systems.

PubMed

Ha, Jung-Hong; Kwak, Sang Won; Kim, Sung-Kyo; Kim, Hyeon-Cheol

2016-11-01

The purpose of this study was to compare the maximum screw-in forces generated during the movement of various Nickel-Titanium (NiTi) file systems. Forty simulated canals in resin blocks were randomly divided into 4 groups for the following instruments: Mtwo size 25/0.07 (MTW, VDW GmbH), Reciproc R25 (RPR, VDW GmbH), ProTaper Universal F2 (PTU, Dentsply Maillefer), and ProTaper Next X2 (PTN, Dentsply Maillefer, n = 10). All the artificial canals were prepared to obtain a standardized lumen by using ProTaper Universal F1. Screw-in forces were measured using a custom-made experimental device (AEndoS- k , DMJ system) during instrumentation with each NiTi file system using the designated movement. The rotation speed was set at 350 rpm with an automatic 4 mm pecking motion at a speed of 1 mm/sec. The pecking depth was increased by 1 mm for each pecking motion until the file reach the working length. Forces were recorded during file movement, and the maximum force was extracted from the data. Maximum screw-in forces were analyzed by one-way ANOVA and Tukey's post hoc comparison at a significance level of 95%. Reciproc and ProTaper Universal files generated the highest maximum screw-in forces among all the instruments while M-two and ProTaper Next showed the lowest ( p < 0.05). Geometrical differences rather than shaping motion and alloys may affect the screw-in force during canal instrumentation. To reduce screw-in forces, the use of NiTi files with smaller cross-sectional area for higher flexibility is recommended.

Transdermal delivery of raloxifene HCl via ethosomal system: Formulation, advanced characterizations and pharmacokinetic evaluation.

PubMed

Mahmood, Syed; Mandal, Uttam Kumar; Chatterjee, Bappaditya

2018-05-05

Raloxifene HCl belongs to a class of selective estrogen receptor modulators (SERMs) which is used for the management of breast cancer. The major problem reported with raloxifene is its poor bioavailability which is only up to 2%. The main objective of the present work was to formulate raloxifene loaded ethosomal preparation for transdermal application and compare it with an oral formulation of the drug. Five ethosomal formulations with different concentrations of ethanol and a conventional liposomes formulation were prepared by rotary evaporation method. The prepared systems were characterised by high resolution transmission electron microscopy (HRTEM), force emission electron microscopy (FESEM), atomic force microscopy (AFM), X-ray diffraction (XRD) and 31 P NMR study. All these advanced characterization study established that the ethosome formulation was well defined by its size, shape and its bilayer formation. Transdermal flux of the optimized ethosome formulation was 22.14 ± 0.83 µg/ml/cm 2 which was 21 times higher when compared to the conventional liposomes. Confocal microscopy study revealed an enhanced permeation of coumarin-6 dye loaded ethosomes to much deeper layers of skin when compared with conventional liposomes. The gel was found to be pseudoplastic with elastic behaviour. In-vivo studies on rats showed a higher bioavailability of RXL (157% times) for ethosomal formulation when compared with the oral formulation. In conclusion, RXL loaded ethosomal formulation via transdermal route showed superior drug delivery properties as compared to oral formulation. Copyright © 2018 Elsevier B.V. All rights reserved.

Comparison of the efficiency of rat papillary muscles during afterloaded isotonic contractions and contractions with sinusoidal length changes.

PubMed

Mellors, L J; Gibbs, C L; Barclay, C J

2001-05-01

The results of previous studies suggest that the maximum mechanical efficiency of rat papillary muscles is lower during a contraction protocol involving sinusoidal length changes than during one involving afterloaded isotonic contractions. The aim of this study was to compare directly the efficiency of isolated rat papillary muscle preparations in isotonic and sinusoidal contraction protocols. Experiments were performed in vitro (27 degrees C) using left ventricular papillary muscles from adult rats. Each preparation performed three contraction protocols: (i) low-frequency afterloaded isotonic contractions (10 twitches at 0.2 Hz), (ii) sinusoidal length change contractions with phasic stimulation (40 twitches at 2 Hz) and (iii) high-frequency afterloaded isotonic contractions (40 twitches at 2 Hz). The first two protocols resembled those used in previous studies and the third combined the characteristics of the first two. The parameters for each protocol were adjusted to those that gave maximum efficiency. For the afterloaded isotonic protocols, the afterload was set to 0.3 of the maximum developed force. The sinusoidal length change protocol incorporated a cycle amplitude of +/-5% resting length and a stimulus phase of -10 degrees. Measurements of force output, muscle length change and muscle temperature change were used to calculate the work and heat produced during and after each protocol. Net mechanical efficiency was defined as the proportion of the energy (enthalpy) liberated by the muscle that appeared as work. The efficiency in the low-frequency, isotonic contraction protocol was 21.1+/-1.4% (mean +/- s.e.m., N=6) and that in the sinusoidal protocol was 13.2+/-0.7%, consistent with previous results. This difference was not due to the higher frequency or greater number of twitches because efficiency in the high-frequency, isotonic protocol was 21.5+/-1.0%. Although these results apparently confirm that efficiency is protocol-dependent, additional experiments designed to measure work output unambiguously indicated that the method used to calculate work output in isotonic contractions overestimated actual work output. When net work output, which excludes work done by parallel elastic elements, rather than total work output was used to determine efficiency in afterloaded isotonic contractions, efficiency was similar to that for sinusoidal contractions. The maximum net mechanical efficiency of rat papillary muscles performing afterloaded isotonic or sinusoidal length change contractions was between 10 and 15%.

DOE Office of Scientific and Technical Information (OSTI.GOV)

Sequis, Julietta E.; Cain, Ronald A.; Burbank, Roberta L.

The Philippines entered into force the International Atomic Energy Agency (IAEA) Additional Protocol (AP) in February 2010. The Philippine Nuclear Research Institute (PNRI) is the government agency responsible for implementing the AP. In June 2010 the IAEA invited the U.S. Department of Energy (DOE) to help conduct a joint national training seminar on the AP. DOE presented to PNRI its AP international technical assistance program, administered by the International Nuclear Safeguards and Engagement Program (INSEP), which helps partner countries implement the AP. In coordination with the IAEA, DOE established this program in 2008 to complement IAEA AP seminars with long-termmore » country-specific cooperation from the perspective of a Member State. The US version of the AP is the same version as that of non-nuclear weapon states except for the addition of a national security exclusion. Due to this, DOE cooperation with other countries enables the sharing of valuable lessons learned in implementing the AP. DOE/INSEP described to PNRI the various areas of cooperation it offers to interested countries, whether they are preparing for entry into force or already implementing the AP. Even countries that have entered the AP into force are sometimes not fully prepared to implement it well, and welcome cooperation to improve their implementation process. PNRI and DOE/INSEP subsequently agreed to cooperate in several areas to enhance the efficiency and effectiveness of the Philippines AP implementation. These areas include providing working-level training to PNRI staff and preparing an information document that details that training for future reference, assisting with the development of an outreach program and procedures for AP reporting and complementary access, and identifying Annex II equipment and non-nuclear materials whose export must be reported under the AP. DOE laboratory representatives, funded by INSEP, met again with PNRI in February 2011 to provide training for PNRI AP staff and investigate specific ways to improve implementation. Another meeting in July 2011 focused on preparations for outreach to industry and universities. In this paper PNRI describes current implementation of the AP in the Philippines, and both DOE/INSEP and PNRI provide their perspectives on their cooperation to enhance that implementation.« less

Positively-charged reduced graphene oxide as an adhesion promoter for preparing a highly-stable silver nanowire film

NASA Astrophysics Data System (ADS)

Sun, Qijun; Lee, Seong Jun; Kang, Hyungseok; Gim, Yuseong; Park, Ho Seok; Cho, Jeong Ho

2015-04-01

An ultrathin conductive adhesion promoter using positively charged reduced graphene oxide (rGO-NH3+) has been demonstrated for preparing highly stable silver nanowire transparent conductive electrodes (AgNW TCEs). The adhesion promoter rGO-NH3+, spray coated between the substrate and AgNWs, significantly enhances the chemical and mechanical stabilities of the AgNW TCEs. Besides, the ultrathin thickness of the rGO-NH3+ ensures excellent optical transparency and mechanical flexibility for TCEs. The AgNW films prepared using the adhesion promoter are extremely stable under harsh conditions, including ultrasonication in a variety of solvents, 3M Scotch tape detachment test, mechanical bending up to 0.3% strain, or fatigue over 1000 cycles. The greatly enhanced adhesion force is attributed to the ionic interactions between the positively charged protonated amine groups in rGO-NH3+ and the negatively charged hydroxo- and oxo-groups on the AgNWs. The positively charged GO-NH3+ and commercial polycationic polymer (poly allylamine hydrochloride) are also prepared as adhesion promoters for comparison with rGO-NH3+. Notably, the closely packed hexagonal atomic structure of rGO offers better barrier properties to water permeation and demonstrates promising utility in durable waterproof electronics. This work offers a simple method to prepare high-quality TCEs and is believed to have great potential application in flexible waterproof electronics.An ultrathin conductive adhesion promoter using positively charged reduced graphene oxide (rGO-NH3+) has been demonstrated for preparing highly stable silver nanowire transparent conductive electrodes (AgNW TCEs). The adhesion promoter rGO-NH3+, spray coated between the substrate and AgNWs, significantly enhances the chemical and mechanical stabilities of the AgNW TCEs. Besides, the ultrathin thickness of the rGO-NH3+ ensures excellent optical transparency and mechanical flexibility for TCEs. The AgNW films prepared using the adhesion promoter are extremely stable under harsh conditions, including ultrasonication in a variety of solvents, 3M Scotch tape detachment test, mechanical bending up to 0.3% strain, or fatigue over 1000 cycles. The greatly enhanced adhesion force is attributed to the ionic interactions between the positively charged protonated amine groups in rGO-NH3+ and the negatively charged hydroxo- and oxo-groups on the AgNWs. The positively charged GO-NH3+ and commercial polycationic polymer (poly allylamine hydrochloride) are also prepared as adhesion promoters for comparison with rGO-NH3+. Notably, the closely packed hexagonal atomic structure of rGO offers better barrier properties to water permeation and demonstrates promising utility in durable waterproof electronics. This work offers a simple method to prepare high-quality TCEs and is believed to have great potential application in flexible waterproof electronics. Electronic supplementary information (ESI) available. See DOI: 10.1039/c5nr00777a

Novel Starch-PVA Polymer for Microparticle Preparation and Optimization Using Factorial Design Study

PubMed Central

Chattopadhyay, Helen; De, Amit Kumar; Datta, Sriparna

2015-01-01

The aim of our present work was to optimize the ratio of a very novel polymer, starch-polyvinyl alcohol (PVA), for controlled delivery of Ornidazole. Polymer-coated drug microparticles were prepared by emulsion method. Microscopic study, scanning electron microscopic study, and atomic force microscopic study revealed that the microparticles were within 10 micrometers of size with smooth spherical shape. The Fourier transform infrared spectroscopy showed absence of drug polymer interaction. A statistical 32 full factorial design was used to study the effect of different concentration of starch and PVA on the drug release profile. The three-dimensional plots gave us an idea about the contribution of each factor on the release kinetics. Hence this novel polymer of starch and polyvinyl alcohol can be utilized for control release of the drug from a targeted delivery device. PMID:27347511

Multilayer bioactive glass/zirconium titanate thin films in bone tissue engineering and regenerative dentistry

PubMed Central

Mozafari, Masoud; Salahinejad, Erfan; Shabafrooz, Vahid; Yazdimamaghani, Mostafa; Vashaee, Daryoosh; Tayebi, Lobat

2013-01-01

Surface modification, particularly coatings deposition, is beneficial to tissue-engineering applications. In this work, bioactive glass/zirconium titanate composite thin films were prepared by a sol-gel spin-coating method. The surface features of the coatings were studied by scanning electron microscopy, atomic force microscopy, and spectroscopic reflection analyses. The results show that uniform and sound multilayer thin films were successfully prepared through the optimization of the process variables and the application of carboxymethyl cellulose as a dispersing agent. Also, it was found that the thickness and roughness of the multilayer coatings increase nonlinearly with increasing the number of the layers. This new class of nanocomposite coatings, comprising the bioactive and inert components, is expected not only to enhance bioactivity and biocompatibility, but also to protect the surface of metallic implants against wear and corrosion. PMID:23641155

Guide for machine tool task force members

DOE Office of Scientific and Technical Information (OSTI.GOV)

Sutton, G.P.

1978-09-01

The purpose of the guide is to assist members of the Machine Tool Task Force (MTTF) in doing the job, preparing technical summary papers, and helping to achieve a uniform, high-quality output from this comprehensive study effort. It supplements the MTTF Plan (UCRL-52552) which contains other important information on the method of operation of MTTF that is related to the preparation of MTTF reports.

KSC-2011-5115

NASA Image and Video Library

2011-07-07

CAPE CANAVERAL, Fla. -- NASA and Sierra Nevada Space Systems (SNSS) of Sparks, Nev., prepare to sign a Space Act Agreement that will offer the company technical capabilities from Kennedy Space Center's uniquely skilled work force. Sitting, from left, are Kennedy Public Affairs Director Lisa Malone; NASA Administrator Charlie Bolden; Kennedy Center Director Bob Cabana; and Mark Sirangelo, head of Sierra Nevada. Standing, from left, are Joyce Riquelme, manager of Kennedy's Center Planning and Development Office; John Curry, director of Sierra Nevada's Systems Integration, Test and Operations; Kennedy Deputy Director Janet Petro; Jim Voss, vice president of Sierra Nevada's Space Exploration Systems; and Merri Sanchez, senior director of Sierra Nevada's Space Exploration Systems. Kennedy will help Sierra Nevada with the ground operations support of its lifting body reusable spacecraft called "Dream Chaser," which resembles a smaller version of the space shuttle orbiter. The spacecraft would carry as many as seven astronauts to the space station. Through the new agreement, Kennedy's work force will use its experience of processing the shuttle fleet for 30 years to help Sierra Nevada define and execute Dream Chaser's launch preparations and post-landing activities. In 2010 and 2011, Sierra Nevada was awarded grants as part of the initiative to stimulate the private sector in developing and demonstrating human spaceflight capabilities for NASA's Commercial Crew Program. The goal of the program, which is based in Florida at Kennedy, is to facilitate the development of a U.S. commercial crew space transportation capability by achieving safe, reliable and cost-effective access to and from the space station and future low Earth orbit destinations. Photo credit: NASA/Jim Grossmann

18 CFR 701.58 - Task forces.

Code of Federal Regulations, 2010 CFR

2010-04-01

... 18 Conservation of Power and Water Resources 2 2010-04-01 2010-04-01 false Task forces. 701.58... Headquarters Organization § 701.58 Task forces. The Director with Council concurrence or the Council may establish task forces from time to time to aid in the preparation of issues for presentation to the Council...

Defense.gov - Dignity, Honor, Respect - For the Fallen

Science.gov Websites

combat operation passes through Dover Air Force Base, Del. The responsibility, and honor, of preparing Operations Center. Stories Dignified Transfer Pays Tribute to Fallen DOVER AIR FORCE BASE, Del., March 12 vehicle to the Air Force Mortuary Affairs Operations Center at Dover Air Force Base, Del. Story Center

Surface properties and cytocompatibillity of silk fibroin films cast from aqueous solutions in different concentrations

NASA Astrophysics Data System (ADS)

Lian, Xiao-Jie; Wang, Song; Zhu, He-Sun

2010-03-01

Silk fibroin film (SFF) has been widely used in biomaterials. SFF is usually prepared from a regenerated silk aqueous solution and its properties depend remarkably on the preparation conditions. However, the effect of the silk fibroin concentration ( C 0) on the SFF surface properties as well as the cytocompatibility has rarely been investigated. In this work we prepared a series of Bombyx mori SFFs by casting SF aqueous solutions with the concentration from 10° to 102 mg/mL on TCPS substrate at 60°C. The test results of atomic force microscopy, attenuated total reflection Fourier transform infrared and contact angles analysis showed that the film surface roughness and β-sheet structure increased with the increase of C 0, whereas the surface hydrophilicity increased with the decrease of C 0. The in vitro clotting time measurement results revealed that the SFFs prepared from the thinner solution showed a longer APTT (activated partial thromboplastin time) and TT (thrombin time). The results of microscopy and MTT assay also revealed that cell adhesion and growth were enhanced on the SFF cast from lower C 0 for fibroblasts. In contrast, endothelial cells showed a similar behavior on all those films that were prepared from the solution in different concentrations.

Report of the Panel on Tactical Aircraft

DTIC Science & Technology

1968-07-01

i. The Department of the Air Force and the Department of the Navy should be requested to prepare "white papers " on aircraft/ strike concepts that...countermeasures; expand exploratory develop- ment, e. Evaluation of penetration aids; call for concept papers , f. Combat data; develop flight recorders...the Navy and the Department of the Air Force to prepare "white papers " on comprehensive aircraft penetration/ strike concepts that include explicit

Preparing Astronomy Majors for the Job Market of the New Millennium

NASA Astrophysics Data System (ADS)

Migenes, Victor

2000-08-01

In the past few years the American Physical Society (APS) has conducted a number of surveys among the graduate student population in the US and also among young researchers. The purpose was to get an idea of the career expectations of the students and how these are met later on in their life. Two of the conclusions were: (1) students want to work in a research environment, preferably academic, and (2) graduate and undergraduate programs are not preparing them well for the different challenges and goals found in industry, the private sector and national laboratories. Jobs in academia, especially tenured positions, have been difficult to obtain forcing many students to give up on their goals after one or two postdoctoral positions. Some have found jobs in other sectors but others feel frustrated that their careers have not met their expectations and are poorly `prepared' for other options. In the areas of Physics and Astronomy there is not much of a job market without graduate studies. So most students must continue graduate work, in these or other fields, in order to compete well in the job market. Graduate and undergraduate programs must become more responsible for the present state of affairs and for implementing improvements. This can be done by broadening the scope of the present programs so that a student is better prepared to face the challenges of other job opportunities. We present here a BSc program designed by astronomers and physicists, at the University of Guanajuato, to try to address some of these concerns and better prepare the students for either continuing with graduate studies or finding employment in an ever-changing job market.

First Responder Refresher: National Standard Curriculum (Instructor Course Guide)

DOT National Transportation Integrated Search

1997-07-08

This white paper provides a brief overview of the report titled "ITS Focus Task Force on System Architecture Report", dated May 1997. The report was prepared by a special task force of the United Kingdoms ITS Focus organization. This task force wa...

[THE INFLUENCE OF LEU-ENKEPHALIN AND MEDICAL PLANTS ON MOTOR ACTIVITY OF STOMACH IN DOGS].

PubMed

Vymjatnina, Z K; Prosekina, E Y; Tomova, T A

2015-01-01

The aim of the real research was a study influence of leu-enkephalin and extracts from the leaves of goose-grass large, of burdock of felted and root of chicory on the motor function of stomach for dogs. The study was carried out on 6 outbred dogs-males, by mass 14-17 kg, with the fistula of stomach by Basov. A leu-enkephalin ("Vector", Russia) was entered intravenously in a dose 7 mcg/kg. The corresponding plant-based preparations entered perorally during 10-14 days to beginning of experiments, on an empty stomach, in a volume a no more than 20 ml. Experiments put in a morning clock, in 16-18 hours after eating, after the careful washing of stomach. For 30 mines to the record of motive activity of stomach an animal was enter a peptide or gave a corresponding extract as water or spirit infusion. At the choice of doses of vegetable preparations came from the before obtained data about the antiulcerous action of the used plants. The conduct of peptide rendered considerable stimulant influence on motor activity of stomach, that was expressed in the increase of period of work and increase of force of reductions especially tonic. All used plants preparations rendered modulating influence on motive activity of stomach. Changes consisted in strengthening of tonic and oppressing of phase component. The most considerable decline of amount of phase reductions caused application of extract of goose-grass. Not only an amount but also force of phase reductions diminished thus. An extract from the root of chicory less considerably reduced the arnount of Phase reJuctions, but here substantially increased their force. All used herbal medicines stimulated tonic activity. Thus, peptide and all studied herbal medicines stimulated motion activity of the stomach that could cause acceleration of evacuation of food to duodenum. Such effect should be considered while choosing the medicine for correction of stomach functional activity.

The intra-articular pressure of the shoulder: an experimental study on the role of the glenoid labrum in stabilizing the joint.

PubMed

Habermeyer, P; Schuller, U; Wiedemann, E

1992-01-01

It was shown on human corpses that the glenohumeral joint may be compared to a piston surrounded by a valve. The glenoid labrum, then, should work like the valve block, sealing the joint from atmospheric pressure. In order to test this hypothesis, 18 human shoulder preparations were studied. The mean stabilizing force obtained by atmospheric pressure was 146 N. Additionally, 15 patients without any sign of instability and 17 patients with an anterior instability of the shoulder were tested under general anesthesia. In stable shoulder joints, traction at the arm caused negative intra-articular pressure that could be correlated to the amount of force exerted. In contrast, unstable shoulder joints with a tear of the glenoid labrum (Bankart lesion) did not exhibit this phenomenon. For unstable shoulder joints, the piston-and-valve model is no longer valid. This enlarges the current concept of shoulder joint stability in two ways: (a) the absence of negative intra-articular pressure disturbs joint mechanics and (b) altered pressure receptors might disturb motor coordination that dynamically protects the shoulder from dislocating forces.

Special mobile rescue unit can speed recovery

DOE Office of Scientific and Technical Information (OSTI.GOV)

Not Available

1977-04-01

Since time is often a matter of life and death in a mine disaster, Mine Emergency Operations (MEO) personnel are prepared to begin rescue work at any mining site in the eastern part of the United States within six hours of notification, and within no more than nine hours in the western United States. The entire MEO force, including vans, trucks, bulldozers to clear and level the drilling site, seismic equipment, and the big drilling rig can be on any site within less than 20 hours of a disaster. The speed of deployment is made possible in some measure bymore » a special agreement between MESA and the United States Air Force, which stands ready 24 hours a day to dispatch giant C-130 cargo aircraft to airlift the tons of bulky MEO equipment. While the big drilling rig is usually taken to disaster sites by highway, it can also be airlifted when necessary.« less

Shear Stress Sensing with Elastic Microfence Structures

NASA Technical Reports Server (NTRS)

Cisotto, Alexxandra; Palmieri, Frank L.; Saini, Aditya; Lin, Yi; Thurman, Christopher S; Kim, Jinwook; Kim, Taeyang; Connell, John W.; Zhu, Yong; Gopalarathnam, Ashok;

Investigation of surface potentials in reduced graphene oxide flake by Kelvin probe force microscopy

NASA Astrophysics Data System (ADS)

Negishi, Ryota; Takashima, Kai; Kobayashi, Yoshihiro

2018-06-01

The surface potential (SP) of reduced graphene oxide (rGO) flakes prepared by thermal treatments of GO under several conditions was analyzed by Kelvin probe force microscopy. The low-crystalline rGO flakes in which a significant amount of oxygen functional groups and structural defects remain have a much lower SP than mechanically exfoliated graphene free from oxygen and defects. On the other hand, the highly crystalline rGO flake after a thermal treatment for the efficient removal of oxygen functional groups and healing of structural defects except for domain boundary shows SP equivalent to that of the mechanically exfoliated graphene. These results indicate that the work function of rGO is sensitively modulated by oxygen functional groups and structural defects remaining after the thermal reduction process, but is not affected significantly by the domain boundary remaining after the healing of structural defects through the thermal treatment at high temperature.

KLASS: Kennedy Launch Academy Simulation System

NASA Technical Reports Server (NTRS)

Garner, Lesley C.

2007-01-01

Software provides access to many sophisticated scientific instrumentation (Scanning Electron Microscope (SEM), a Light Microscope, a Scanning Probe Microscope (covering Scanning Tunneling, Atomic Force, and Magnetic Force microscopy), and an Energy Dispersive Spectrometer for the SEM). Flash animation videos explain how each of the instruments work. Videos on how they are used at NASA and the sample preparation. Measuring and labeling tools provided with each instrument. Hands on experience of controlling the virtual instrument to conduct investigations, much like the real scientists at NASA do. Very open architecture. Open source on SourceForge. Extensive use of XML Target audience is high school and entry-level college students. "Many beginning students never get closer to an electron microscope than the photos in their textbooks. But anyone can get a sense of what the instrument can do by downloading this simulator from NASA's Kennedy Space Center." Science Magazine, April 8th, 2005

Recommendations for Training in Pediatric Psychology: Defining Core Competencies Across Training Levels

PubMed Central

Janicke, David M.; McQuaid, Elizabeth L.; Mullins, Larry L.; Robins, Paul M.; Wu, Yelena P.

2014-01-01

Objective As a field, pediatric psychology has focused considerable efforts on the education and training of students and practitioners. Alongside a broader movement toward competency attainment in professional psychology and within the health professions, the Society of Pediatric Psychology commissioned a Task Force to establish core competencies in pediatric psychology and address the need for contemporary training recommendations. Methods The Task Force adapted the framework proposed by the Competency Benchmarks Work Group on preparing psychologists for health service practice and defined competencies applicable across training levels ranging from initial practicum training to entry into the professional workforce in pediatric psychology. Results Competencies within 6 cluster areas, including science, professionalism, interpersonal, application, education, and systems, and 1 crosscutting cluster, crosscutting knowledge competencies in pediatric psychology, are presented in this report. Conclusions Recommendations for the use of, and the further refinement of, these suggested competencies are discussed. PMID:24719239

Impact of the Joint Task Force on Undergraduate Physics Programs for Innovation and Entrepreneurship Education in Physics

NASA Astrophysics Data System (ADS)

Arion, Douglas

The Joint Task Force on Undergraduate Physics Programs has worked diligently to develop recommendations for what physics programs could and should be doing to prepare graduates for 21st century careers. While the `traditional' physics curriculum has served for many years, the demands of the new workforce, and the recognition that only a few percent of physics students actually become faculty - the vast majority entering the workforce and applying their skills to a very diverse range of problems, projects, and products - implies that a review of the education undergraduates receives is in order. The outcomes of this study point to the need to provide greater connection between the education process and the actual skills, knowledge, and abilities that the workplace demands. This presentation will summarize these considerations, and show how entrepreneurship and innovation programs and curricula are a particularly effective means of bringing these elements to physics students.

Joint Task Force on Undergraduate Physics Programs: Implications for physics programs and why you should care

NASA Astrophysics Data System (ADS)

Hodapp, Theodore

2016-03-01

The content of undergraduate physics programs has not changed appreciably in 50 years, however, the jobs our students take have changed dramatically. Preparing students for careers they are likely to encounter requires physics programs to rethink and in some cases retool to provide an education that will not only educate an individual in the habits of mind and keen sense of how to solve complex technical problems, but also what related skills they will need to be effective in those careers. Do you teach your student how to read or create a budget? How about dealing with a low-performing member of an R&D team? This talk will explore driving forces behind this report, potential implications for physics departments, and practical steps faculty members can take to continue to consider improvements in experiences for our students. This work is supported in part by the National Science Foundation (NSF-1540570).

An introductory handbook for state task forces to combat drunk driving.

DOT National Transportation Integrated Search

1983-01-01

In June 1982 Governor Robb created a task force to identify and assess efforts under way in Virginia to address the problem of drunken driving and to make recommendations. This booklet was prepared to assist the task force in its deliberations.

Radiology corner. Answer to last month's radiology case and image: gun shot wound to the chest of a military working dog.

PubMed

Galer, Meghan; Magid, Donna; Folio, Les

2009-06-01

This Military Working Dog (MWD) was shot in the chest during combat operations in Iraq. Military Working Dogs are critical to the safety and well-being of deployed troops in combat operations and, as such, they are triaged and treated in our combat hospitals just like any other soldier; their speciation is not a factor in their triage status. This case familiarizes military physicians with the basic canine anatomy, positioning, and radiological technique they should be aware of before deploying. We also strive to raise awareness of the vital roles that these MWDs play for our forces, counterany concerns that may arise over the issue of treating these dogs in human facilities, and leave the reader feeling better prepared to handle the situation should they ever find themselves poised to save one of our four-legged warriors.

Self-Sealed Bionic Long Microchannels with Thin Walls and Designable Nanoholes Prepared by Line-Contact Capillary-Force Assembly.

PubMed

Lao, Zhao-Xin; Hu, Yan-Lei; Pan, Deng; Wang, Ren-Yan; Zhang, Chen-Chu; Ni, Jin-Cheng; Xu, Bing; Li, Jia-Wen; Wu, Dong; Chu, Jia-Ru

2017-06-01

Long microchannels with thin walls, small width, and nanoholes or irregular shaped microgaps, which are similar to capillaries or cancerous vessels, are urgently needed to simulate the physiological activities in human body. However, the fabrication of such channels remains challenging. Here, microchannels with designable holes are manufactured by combining laser printing with line-contact capillary-force assembly. Two microwalls are first printed by femtosecond laser direct-writing, and subsequently driven to collapse into a channel by the capillary force that arises in the evaporation of developer. The channel can remain stable in solvent due to the enhanced Van der Waals' force caused by the line-contact of microwalls. Microchannels with controllable nanoholes and almost arbitrary patterns can be fabricated without any bonding or multistep processes. As-prepared microchannels, with wall thicknesses less than 1 µm, widths less than 3 µm, lengths more than 1 mm, are comparable with human capillaries. In addition, the prepared channels also exhibit the ability to steer the flow of liquid without any external pump. © 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

KSC-03pd0517

NASA Image and Video Library

2003-02-19

KENNEDY SPACE CENTER, FLA. -- - At NASA's Family & Community Mars Exploration Day, held in Cape Canaveral, Fla., Kristie Durham (left), Martha Vreeland (center), and Jeanne Hawkins (right), with Expendable Launch Vehicle Services, offer information about the facility. The event informed students and the general public about Florida's key role as NASA's "Gateway to Mars" and offered an opportunity to meet with scientists, engineers, educators and others working Mars exploration missions. The Mars Exploration Rovers are being prepared for launch this spring aboard Boeing Delta II rockets from the Cape Canaveral Air Force Station. They will land on Mars and start exploring in January 2004.

KSC-03PD-0517

NASA Technical Reports Server (NTRS)

2003-01-01

KENNEDY SPACE CENTER, FLA. -- - At NASA's Family & Community Mars Exploration Day, held in Cape Canaveral, Fla., Kristie Durham (left), Martha Vreeland (center), and Jeanne Hawkins (right), with Expendable Launch Vehicle Services, offer information about the facility. The event informed students and the general public about Florida's key role as NASA's 'Gateway to Mars' and offered an opportunity to meet with scientists, engineers, educators and others working Mars exploration missions. The Mars Exploration Rovers are being prepared for launch this spring aboard Boeing Delta II rockets from the Cape Canaveral Air Force Station. They will land on Mars and start exploring in January 2004.

EC97-44354-1

NASA Image and Video Library

1997-12-16

The F-16XL #1 (NASA 849) takes off for the first flight of the Digital Flight Control System (DFCS) on December 16, 1997. Like most first flight, the DFCS required months of preparations. During July 1997, crews worked on the engine, cockpit, canopy, seat, and instrumentation. By late August, the aircraft began combined systems tests and a flight readiness review. Although the Air Force Safety Review Board (AFSRB)- a group that provided double checks on all flight operations - approved the program in late November 1997, a problem with the aircraft flight computer delayed the functional check flight until mid-December.

EM-1 Booster Prep, Right Aft Skirt Work-In-Progress

NASA Image and Video Library

2016-10-30

The right hand aft skirt for NASA's Space Launch System (SLS) rocket has been refurbished and painted and is ready for the assembly process in the Booster Fabrication Facility at the agency's Kennedy Space Center in Florida. The aft skirt was refurbished and painted in support facilities at the Hangar AF facility at Cape Canaveral Air Force Station in Florida. The space shuttle-era aft skirt will be used on the right hand booster of the SLS for Exploration Mission 1 (EM-1). NASA is preparing for EM-1, deep space missions, and the Journey to Mars.

Electrocatalytic Mechanism Involving Michaelis-Menten Kinetics at the Preparative Scale: Theory and Applicability to Photocurrents from a Photosynthetic Algae Suspension With Quinones.

PubMed

Longatte, Guillaume; Guille-Collignon, Manon; Lemaître, Frédéric

2017-10-06

In the past years, many strategies have been implemented to benefit from oxygenic photosynthesis to harvest photosynthetic electrons and produce a significant photocurrent. Therefore, electrochemical tools were considered and have globally relied on the electron transfer(s) between the photosynthetic chain and a collecting electrode. In this context, we recently reported the implementation of an electrochemical set-up at the preparative scale to produce photocurrents from a Chlamydomonas reinhardtii algae suspension with an appropriate mediator (2,6-DCBQ) and a carbon gauze as the working electrode. In the present work, we wish to describe a mathematical modeling of the recorded photocurrents to better understand the effects of the experimental conditions on the photosynthetic extraction of electrons. In that way, we established a general model of an electrocatalytic mechanism at the preparative scale (that is, assuming a homogenous bulk solution at any time and a constant diffusion layer, both assumptions being valid under forced convection) in which the chemical step involves a Michaelis-Menten-like behaviour. Dependences of transient and steady-state corresponding currents were analysed as a function of different parameters by means of zone diagrams. This model was tested to our experimental data related to photosynthesis. The corresponding results suggest that competitive pathways beyond photosynthetic harvesting alone should be taken into account. © 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.

A Special Force: Origin and Development of the Jedburgh Project in Support of Operation Overload

DTIC Science & Technology

1991-06-07

final preparations for de ,ployment. It Includes ai study of the recruitment process used to man the force ad the training prngram undertaken to prepare...le Borgne, Prince Michel de Bourbon de Parme, Colonel (Ret.) Robert Cantais, Joseph Carbuccia, Robert Clause, Rene Esteve, Francois Franceschi, Joe... de Francesco, Maurice Geminel, Adrien Grafeville, Colonel (Ret.) Paul Grall, Claude l’Herbette, Xavier Humblet, Lieutenant Colonel (Ret.) Pierre

Substrate preparation for reliable imaging of DNA molecules with the scanning force microscope.

PubMed

Vesenka, J; Guthold, M; Tang, C L; Keller, D; Delaine, E; Bustamante, C

1992-07-01

A simple method of substrate preparation for imaging circular DNA molecules with the scanning force microscope (SFM) is presented. These biomolecules are adsorbed onto mica that has been soaked in magnesium acetate, sonicated and glow-discharged. The stylus-sample forces that may be endured before sample damage occurs depends on the ambient relative humidity. Images of circular DNA molecules have been obtained routinely using tips specially modified by an electron beam with a radius of curvature, Rc, of about 10 nm [D. Keller and C. Chih-Chung, Surf. Sci. 268 (1992) 333]. The resolution of these adsorbed biomolecules is determined by the Rc. At higher forces individual circular DNA molecules can be manipulated with the SFM stylus. Strategies to develop still sharper probes will be discussed.

Using optical tweezers to examine the chemotactic force to a single inflammatory cell--eosinophil stimulated by chemoattractants prepared from Toxocara Canis larvae

NASA Astrophysics Data System (ADS)

Shih, Po-Chen; Su, Yi-Jr; Chen, Ke-Min; Jen, Lin-Ni; Liu, Cheng-tzu; Hsu, Long

2005-08-01

Granulocytes are a group of white blood cells belonging to the innate immune system in human and in murine in which eosinophils play an important role in worm infection-induced inflammation. The migration of these cells is well characterized and has been separated into four steps: rolling, adhesion, transendothelial migration, and chemotaxis, however, the physical characteristics of the chemotactic force to eosinophils from worm component remain largely unknown. Note that optical tweezers are featured in the manipulation of a single cell and the measurement of biological forces. Therefore, we propose to use optical tweezers to examine the chemotactic force to a eosinophil from a T. canis lavae preparation in terms of distance during the migration of eosinophil.

America's Changing Work Force: Statistics in Brief.

ERIC Educational Resources Information Center

American Association of Retired Persons, Washington, DC.

This booklet provides information about the demographics of the changing work force. It offers an at-a-glance profile of workers age 45 and older and considers likely changes in the work force of the future. The document includes topics such as the composition of the work force of today and tomorrow by age and sex, labor force participation rates,…

Polyelectrolyte-induced reduction of exfoliated graphite oxide: a facile route to synthesis of soluble graphene nanosheets.

PubMed

Zhang, Sheng; Shao, Yuyan; Liao, Honggang; Engelhard, Mark H; Yin, Geping; Lin, Yuehe

2011-03-22

Here we report that poly(diallyldimethylammonium chloride) (PDDA) acts as both a reducing agent and a stabilizer to prepare soluble graphene nanosheets from graphite oxide. The results of transmission electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy, atomic force microscopy, and Fourier transform infrared indicated that graphite oxide was successfully reduced to graphene nanosheets which exhibited single-layer structure and high dispersion in various solvents. The reaction mechanism for PDDA-induced reduction of exfoliated graphite oxide was proposed. Furthermore, PDDA facilitated the in situ growth of highly dispersed Pt nanoparticles on the surface of graphene nanosheets to form Pt/graphene nanocomposites, which exhibited excellent catalytic activity toward formic acid oxidation. This work presents a facile and environmentally friendly approach to the synthesis of graphene nanosheets and opens up a new possibility for preparing graphene and graphene-based nanomaterials for large-scale applications.

Global Trends in Mercury Management

PubMed Central

Choi, Kyunghee

2012-01-01

The United Nations Environmental Program Governing Council has regulated mercury as a global pollutant since 2001 and has been preparing the mercury convention, which will have a strongly binding force through Global Mercury Assessment, Global Mercury Partnership Activities, and establishment of the Open-Ended Working Group on Mercury. The European Union maintains an inclusive strategy on risks and contamination of mercury, and has executed the Mercury Export Ban Act since December in 2010. The US Environmental Protection Agency established the Mercury Action Plan (1998) and the Mercury Roadmap (2006) and has proposed systematic mercury management methods to reduce the health risks posed by mercury exposure. Japan, which experienced Minamata disease, aims vigorously at perfection in mercury management in several ways. In Korea, the Ministry of Environment established the Comprehensive Plan and Countermeasures for Mercury Management to prepare for the mercury convention and to reduce risks of mercury to protect public health. PMID:23230466

Surface Morphology of Vapor-Deposited Chitosan: Evidence of Solid-State Dewetting during the Formation of Biopolymer Films.

PubMed

Retamal, Maria Jose; Corrales, Tomas P; Cisternas, Marcelo A; Moraga, Nicolas H; Diaz, Diego I; Catalan, Rodrigo E; Seifert, Birger; Huber, Patrick; Volkmann, Ulrich G

2016-03-14

Chitosan is a useful and versatile biopolymer with several industrial and biological applications. Whereas its physical and physicochemical bulk properties have been explored quite intensively in the past, there is a lack of studies regarding the morphology and growth mechanisms of thin films of this biopolymer. Of particular interest for applications in bionanotechnology are ultrathin films with thicknesses under 500 Å. Here, we present a study of thin chitosan films prepared in a dry process using physical vapor deposition and in situ ellipsometric monitoring. The prepared films were analyzed with atomic force microscopy in order to correlate surface morphology with evaporation parameters. We find that the surface morphology of our final thin films depends on both the optical thickness, i.e., measured with ellipsometry, and the deposition rate. Our work shows that ultrathin biopolymer films can undergo dewetting during film formation, even in the absence of solvents and thermal annealing.

KSC-2013-2503

NASA Image and Video Library

2013-05-30

VANDENBERG AFB, Calif. – Engineers prepare to install a radial retraction system on NASA's IRIS spacecraft after its connection to the nose of an Orbital Sciences Pegasus XL rocket that will lift the solar observatory into orbit in June. The work is taking place in a hangar at Vandenberg Air Force Base where IRIS, short for Interface Region Imaging Spectrograph, is being prepared for launch on a Pegasus XL rocket. Scheduled for launch from Vandenberg June 26, IRIS will open a new window of discovery by tracing the flow of energy and plasma through the chromospheres and transition region into the sun’s corona using spectrometry and imaging. IRIS fills a crucial gap in our ability to advance studies of the sun-to-Earth connection by tracing the flow of energy and plasma through the foundation of the corona and the region around the sun known as the heliosphere. Photo credit: NASA/Randy Beaudoin

KSC-2013-2477

NASA Image and Video Library

2013-05-29

VANDENBERG AFB, Calif. – Engineers prepare to connect NASA's IRIS spacecraft to the nose of an Orbital Sciences Pegasus XL rocket that will lift the solar observatory into orbit in June. The work is taking place in a hangar at Vandenberg Air Force Base where IRIS, short for Interface Region Imaging Spectrograph, is being prepared for launch on a Pegasus XL rocket. Scheduled for launch from Vandenberg no earlier than June 26, 2013, IRIS will open a new window of discovery by tracing the flow of energy and plasma through the chromospheres and transition region into the sun’s corona using spectrometry and imaging. IRIS fills a crucial gap in our ability to advance studies of the sun-to-Earth connection by tracing the flow of energy and plasma through the foundation of the corona and the region around the sun known as the heliosphere. Photo credit: NASA/Randy Beaudoin

KSC-2013-2480

NASA Image and Video Library

2013-05-29

VANDENBERG AFB, Calif. – Engineers prepare to connect NASA's IRIS spacecraft to the nose of an Orbital Sciences Pegasus XL rocket that will lift the solar observatory into orbit in June. The work is taking place in a hangar at Vandenberg Air Force Base where IRIS, short for Interface Region Imaging Spectrograph, is being prepared for launch on a Pegasus XL rocket. Scheduled for launch from Vandenberg no earlier than June 26, 2013, IRIS will open a new window of discovery by tracing the flow of energy and plasma through the chromospheres and transition region into the sun’s corona using spectrometry and imaging. IRIS fills a crucial gap in our ability to advance studies of the sun-to-Earth connection by tracing the flow of energy and plasma through the foundation of the corona and the region around the sun known as the heliosphere. Photo credit: NASA/Randy Beaudoin

KSC-2013-2481

NASA Image and Video Library

2013-05-29

VANDENBERG AFB, Calif. – Engineers prepare to connect NASA's IRIS spacecraft to the nose of an Orbital Sciences Pegasus XL rocket that will lift the solar observatory into orbit in June. The work is taking place in a hangar at Vandenberg Air Force Base where IRIS, short for Interface Region Imaging Spectrograph, is being prepared for launch on a Pegasus XL rocket. Scheduled for launch from Vandenberg no earlier than June 26, 2013, IRIS will open a new window of discovery by tracing the flow of energy and plasma through the chromospheres and transition region into the sun’s corona using spectrometry and imaging. IRIS fills a crucial gap in our ability to advance studies of the sun-to-Earth connection by tracing the flow of energy and plasma through the foundation of the corona and the region around the sun known as the heliosphere. Photo credit: NASA/Randy Beaudoin

KSC-2013-2580

NASA Image and Video Library

2013-06-05

- VANDENBERG AFB – An engineer makes preparations on the starboard side of the payload fairing before it is connected into place for NASA's IRIS spacecraft. The fairing connects to the nose of the Orbital Sciences Pegasus XL rocket that will lift the solar observatory into orbit in June. The work is taking place in a hangar at Vandenberg Air Force Base where IRIS, short for Interface Region Imaging Spectrograph, is being prepared for launch on a Pegasus XL rocket. Scheduled for launch from Vandenberg June 26, IRIS will open a new window of discovery by tracing the flow of energy and plasma through the chromospheres and transition region into the sun’s corona using spectrometry and imaging. IRIS fills a crucial gap in our ability to advance studies of the sun-to-Earth connection by tracing the flow of energy and plasma through the foundation of the corona and the region around the sun known as the heliosphere. Photo credit: NASA/Randy Beaudoin

KSC-2013-2482

NASA Image and Video Library

2013-05-29

VANDENBERG AFB, Calif. – Engineers prepare to connect NASA's IRIS spacecraft to the nose of an Orbital Sciences Pegasus XL rocket that will lift the solar observatory into orbit in June. The work is taking place in a hangar at Vandenberg Air Force Base where IRIS, short for Interface Region Imaging Spectrograph, is being prepared for launch on a Pegasus XL rocket. Scheduled for launch from Vandenberg no earlier than June 26, 2013, IRIS will open a new window of discovery by tracing the flow of energy and plasma through the chromospheres and transition region into the sun’s corona using spectrometry and imaging. IRIS fills a crucial gap in our ability to advance studies of the sun-to-Earth connection by tracing the flow of energy and plasma through the foundation of the corona and the region around the sun known as the heliosphere. Photo credit: NASA/Randy Beaudoin

Tailoring the morphology of raspberry-like carbon black/polystyrene composite microspheres for fabricating superhydrophobic surface

DOE Office of Scientific and Technical Information (OSTI.GOV)

Bao, Yubin; Li, Qiuying, E-mail: liqy@ecust.edu.cn; Shanghai Key Laboratory Polymeric Materials

In our previous report, raspberry-like carbon black/polystyrene (CB/PS) composite microsphere was prepared through heterocoagulation process. Based on the previous study, in the present work, the morphology of raspberry-like CB/PS particle is tailored through adjusting the polarity and the concentration ratio of CB/PS colloidal suspension with the purpose to prepare particulate film for the fabrication of superhydrophobic surface. Scanning electron microscope (SEM) confirms the morphology of raspberry-like particle and the coverage of CB. Rough surfaces fabricated by raspberry-like particles with proper morphology are observed by SEM and clear evidence of superhydrophobic surface is shown. The structure of raspberry-like particle is analyzedmore » by atom force microscope. The proposed relationship between the hydrophobicity and the structure of CB aggregates on the surface of PS microsphere is discussed in details.« less

Preparation of Langmuir-Blodgett thin films of calix[6]arenes and p-tert butyl group effect on their gas sensing properties

NASA Astrophysics Data System (ADS)

Ozmen, Mustafa; Ozbek, Zikriye; Bayrakci, Mevlut; Ertul, Seref; Ersoz, Mustafa; Capan, Rifat

2015-12-01

Organic vapor sensing properties of Langmuir-Blodgett (LB) thin films of p-tert-butyl calix[6]arene and calix[6]arene, and their certain characterization are reported in this work. LB films of these calixarenes have been characterized by contact angle measurement, quartz crystal microbalance (QCM), scanning electron microscopy (SEM) and atomic force microscopy (AFM). QCM system was used for the measurement of sensor response against chloroform, benzene, toluene and ethanol vapors. Forming of stable monolayers was observed at the water surface using surface pressure-area isotherm graph. The results indicate that good quality, uniform LB films can be prepared with a transfer ratio of over 0.95. Due to the adsorption of vapors into the LB film structures; they yield a response to all vapors as of large, fast, and reproducible.

MEMS based Low Cost Piezoresistive Microcantilever Force Sensor and Sensor Module

PubMed Central

Pandya, H. J.; Kim, Hyun Tae; Roy, Rajarshi; Desai, Jaydev P.

2014-01-01

In the present work, we report fabrication and characterization of a low-cost MEMS based piezoresistive micro-force sensor with SU-8 tip using laboratory made silicon-on-insulator (SOI) substrate. To prepare SOI wafer, silicon film (0.8 µm thick) was deposited on an oxidized silicon wafer using RF magnetron sputtering technique. The films were deposited in Argon (Ar) ambient without external substrate heating. The material characteristics of the sputtered deposited silicon film and silicon film annealed at different temperatures (400–1050°C) were studied using atomic force microscopy (AFM) and X-ray diffraction (XRD) techniques. The residual stress of the films was measured as a function of annealing temperature. The stress of the as-deposited films was observed to be compressive and annealing the film above 1050°C resulted in a tensile stress. The stress of the film decreased gradually with increase in annealing temperature. The fabricated cantilevers were 130 µm in length, 40 µm wide and 1.0 µm thick. A series of force-displacement curves were obtained using fabricated microcantilever with commercial AFM setup and the data were analyzed to get the spring constant and the sensitivity of the fabricated microcantilever. The measured spring constant and sensitivity of the sensor was 0.1488N/m and 2.7mV/N. The microcantilever force sensor was integrated with an electronic module that detects the change in resistance of the sensor with respect to the applied force and displays it on the computer screen. PMID:24855449

MEMS based Low Cost Piezoresistive Microcantilever Force Sensor and Sensor Module.

PubMed

Pandya, H J; Kim, Hyun Tae; Roy, Rajarshi; Desai, Jaydev P

2014-03-01

In the present work, we report fabrication and characterization of a low-cost MEMS based piezoresistive micro-force sensor with SU-8 tip using laboratory made silicon-on-insulator (SOI) substrate. To prepare SOI wafer, silicon film (0.8 µm thick) was deposited on an oxidized silicon wafer using RF magnetron sputtering technique. The films were deposited in Argon (Ar) ambient without external substrate heating. The material characteristics of the sputtered deposited silicon film and silicon film annealed at different temperatures (400-1050°C) were studied using atomic force microscopy (AFM) and X-ray diffraction (XRD) techniques. The residual stress of the films was measured as a function of annealing temperature. The stress of the as-deposited films was observed to be compressive and annealing the film above 1050°C resulted in a tensile stress. The stress of the film decreased gradually with increase in annealing temperature. The fabricated cantilevers were 130 µm in length, 40 µm wide and 1.0 µm thick. A series of force-displacement curves were obtained using fabricated microcantilever with commercial AFM setup and the data were analyzed to get the spring constant and the sensitivity of the fabricated microcantilever. The measured spring constant and sensitivity of the sensor was 0.1488N/m and 2.7mV/N. The microcantilever force sensor was integrated with an electronic module that detects the change in resistance of the sensor with respect to the applied force and displays it on the computer screen.

Entry into labour: The experience of young adults in Brazil

NASA Astrophysics Data System (ADS)

Gomes, Candido A.

1990-12-01

This study focuses on the experience of young adults employed in the tertiary sector in Brasília. The results show that young people are prepared for work by on-the-job training and nonformal education; schooling is mainly an indicator of trainability. Entry into the labour force reinforces social differences in family background and schooling. The results tend to support the moderate version of classical theory with regard to the nature of school/work relationships. In the context of the conflict paradigm, the data run contrary to both reproductionism and the radical critique of this view. From the comparative standpoint youth is an underprivileged group in the labour market, regardless of sex, socioeconomic status and country of residence. Despite these variations, societies are stratified by age groups.

Using AFM Force Curves to Explore Properties of Elastomers

ERIC Educational Resources Information Center

Ferguson, Megan A.; Kozlowski, Joseph J.

2013-01-01

polydimethylsiloxane (PDMS) elastomers. Force curves are used to quantify the stiffness of elastomers prepared with different base-to-curing agent ratios. Trends in observed spring constants of the…

Lyophilized sustained release mucoadhesive chitosan sponges for buccal buspirone hydrochloride delivery: formulation and in vitro evaluation.

PubMed

Kassem, Mohamed A A; ElMeshad, Aliaa N; Fares, Ahmed R

2015-06-01

This work aims to prepare sustained release buccal mucoadhesive lyophilized chitosan sponges of buspirone hydrochloride (BH) to improve its systemic bioavailability. Chitosan sponges were prepared using simple casting/freeze-drying technique according to 3(2) factorial design where chitosan grade was set at three levels (low, medium, and high molecular weight), and concentration of chitosan solution at three levels (0.5, 1, and 2%). Mucoadhesion force, ex vivo mucoadhesion time, percent BH released after 8 h (Q8h), and time for release of 50% BH (T50%) were chosen as dependent variables. Additional BH cup and core buccal chitosan sponge were prepared to achieve uni-directional BH release toward the buccal mucosa. Sponges were evaluated in terms of drug content, surface pH, scanning electron microscopy, swelling index, mucoadhesion strength, ex vivo mucoadhesion time, and in vitro drug release. Cup and core sponge (HCH 0.5E) were able to adhere to the buccal mucosa for 8 h. It showed Q8h of 68.89% and exhibited a uni-directional drug release profile following Higuchi diffusion model.

Preparation of atomically flat rutile TiO 2(001) surfaces for oxide film growth

DOE PAGES

Wang, Yang; Lee, Shinbuhm; Vilmercati, P.; ...

2016-01-01

The availability of low-index rutile TiO 2 single crystal substrates with atomically flat surfaces is essential for enabling epitaxialgrowth of rutile transition metal oxide films. The high surface energy of the rutile (001) surface often leads to surface faceting, which precludes the sputter and annealing treatment commonly used for the preparation of clean and atomically flat TiO 2(110) substrate surfaces. In this work, we reveal that stable and atomically flat rutile TiO 2(001) surfaces can be prepared with an atomically ordered reconstructedsurface already during a furnace annealing treatment in air. We tentatively ascribe this result to the decrease in surfacemore » energy associated with the surface reconstruction, which removes the driving force for faceting. Despite the narrow temperature window where this morphology can initially be formed, we demonstrate that it persists in homoepitaxialgrowth of TiO 2(001) thin films. The stabilization of surface reconstructions that prevent faceting of high-surface-energy crystal faces may offer a promising avenue towards the realization of a wider range of high quality epitaxial transition metal oxide heterostructures.« less

New Labor Force Projections to 1990. Special Labor Force Report 197.

ERIC Educational Resources Information Center

Fullerton, Howard N., Jr.; Flaim, Paul O.

Prepared as part of the Bureau of Labor Statistics' periodic reassessment of its projections of the future growth trends of the various sectors of the American economy, new labor force projections to 1990 are presented based on trends in labor force participation as observed through 1975 and on the most recent population projections of the U.S.…

Photoinduced work function changes by isomerization of a densely packed azobenzene-based SAM on Au: a joint experimental and theoretical study.

PubMed

Crivillers, N; Liscio, A; Di Stasio, F; Van Dyck, C; Osella, S; Cornil, D; Mian, S; Lazzerini, G M; Fenwick, O; Orgiu, E; Reinders, F; Braun, S; Fahlman, M; Mayor, M; Cornil, J; Palermo, V; Cacialli, F; Samorì, P

2011-08-28

Responsive monolayers are key building blocks for future applications in organic and molecular electronics in particular because they hold potential for tuning the physico-chemical properties of interfaces, including their energetics. Here we study a photochromic SAM based on a conjugated azobenzene derivative and its influence on the gold work function (Φ(Au)) when chemisorbed on its surface. In particular we show that the Φ(Au) can be modulated with external stimuli by controlling the azobenzene trans/cis isomerization process. This phenomenon is characterized experimentally by four different techniques, kelvin probe, kelvin probe force microscopy, electroabsorption spectroscopy and ultraviolet photoelectron spectroscopy. The use of different techniques implies exposing the SAM to different measurement conditions and different preparation methods, which, remarkably, do not alter the observed work function change (Φ(trans)-Φ(cis)). Theoretical calculations provided a complementary insight crucial to attain a deeper knowledge on the origin of the work function photo-modulation.

Electrical field-induced extraction and separation techniques: promising trends in analytical chemistry--a review.

PubMed

Yamini, Yadollah; Seidi, Shahram; Rezazadeh, Maryam

2014-03-03

Sample preparation is an important issue in analytical chemistry, and is often a bottleneck in chemical analysis. So, the major incentive for the recent research has been to attain faster, simpler, less expensive, and more environmentally friendly sample preparation methods. The use of auxiliary energies, such as heat, ultrasound, and microwave, is one of the strategies that have been employed in sample preparation to reach the above purposes. Application of electrical driving force is the current state-of-the-art, which presents new possibilities for simplifying and shortening the sample preparation process as well as enhancing its selectivity. The electrical driving force has scarcely been utilized in comparison with other auxiliary energies. In this review, the different roles of electrical driving force (as a powerful auxiliary energy) in various extraction techniques, including liquid-, solid-, and membrane-based methods, have been taken into consideration. Also, the references have been made available, relevant to the developments in separation techniques and Lab-on-a-Chip (LOC) systems. All aspects of electrical driving force in extraction and separation methods are too specific to be treated in this contribution. However, the main aim of this review is to provide a brief knowledge about the different fields of analytical chemistry, with an emphasis on the latest efforts put into the electrically assisted membrane-based sample preparation systems. The advantages and disadvantages of these approaches as well as the new achievements in these areas have been discussed, which might be helpful for further progress in the future. Copyright © 2013 Elsevier B.V. All rights reserved.

AEROMEDICAL EVACUATION: CLINICALLY PREPARING AIR FORCE FLIGHT NURSES

DTIC Science & Technology

2016-10-10

AU/ACSC/2016 AIR COMMAND AND STAFF COLLEGE AIR UNIVERSITY AEROMEDICAL EVACUATION: CLINICALLY PREPARING AIR FORCE FLIGHT NURSES by Michael...15 Figure 6: Patient Movement Visibility……………………………………………………..……16 Figure 7: Clinical Flight Nursing Qualification Criteria...treating each patient’s malady. Flight nurses ensure patients receive safe transport and are treated with dignity. For military members required

KSC-2011-5119

NASA Image and Video Library

2011-07-07

CAPE CANAVERAL, Fla. -- Kennedy Space Center Director Bob Cabana, left, Mark Sirangelo, head of Sierra Nevada Space Systems (SNSS) of Sparks, Nev., and NASA Administrator Charlie Bolden pose for a photo after signing a Space Act Agreement that will offer the company technical capabilities from Kennedy's uniquely skilled work force. Kennedy will help Sierra Nevada with the ground operations support of its lifting body reusable spacecraft called "Dream Chaser," which resembles a smaller version of the space shuttle orbiter. The spacecraft would carry as many as seven astronauts to the space station. Through the new agreement, Kennedy's work force will use its experience of processing the shuttle fleet for 30 years to help Sierra Nevada define and execute Dream Chaser's launch preparations and post-landing activities. In 2010 and 2011, Sierra Nevada was awarded grants as part of the initiative to stimulate the private sector in developing and demonstrating human spaceflight capabilities for NASA's Commercial Crew Program. The goal of the program, which is based in Florida at Kennedy, is to facilitate the development of a U.S. commercial crew space transportation capability by achieving safe, reliable and cost-effective access to and from the space station and future low Earth orbit destinations. Photo credit: NASA/Jim Grossmann

Dynamic Torque and Vertical Force Analysis during Nickel-titanium Rotary Root Canal Preparation with Different Modes of Reciprocal Rotation.

PubMed

Tokita, Daisuke; Ebihara, Arata; Nishijo, Miki; Miyara, Kana; Okiji, Takashi

2017-10-01

The purpose of the present study was to compare 2 modes of reciprocal movement (torque-sensitive and time-dependent reciprocal rotation) with continuous rotation in terms of torque and apical force generation during nickel-titanium rotary root canal instrumentation. A custom-made automated root canal instrumentation and torque/force analyzing device was used to prepare simulated canals in resin blocks and monitor the torque and apical force generated in the blocks during preparation. Experimental groups (n = 7, each) consisted of (1) torque-sensitive reciprocal rotation with torque-sensitive vertical movement (group TqR), (2) time-dependent reciprocal rotation with time-dependent vertical movement (group TmR), and (3) continuous rotation with time-dependent vertical movement (group CR). The canals were instrumented with TF Adaptive SM1 and SM2 rotary files (SybronEndo, Orange, CA), and the torque and apical force were measured during instrumentation with SM2. The mean and maximum torque and apical force values were statistically analyzed using 1-way analysis of variance and the Tukey test (α = 0.05). The recordings showed intermittent increases of upward apical force and clockwise torque, indicating the generation and release of screw-in forces. The maximum upward apical force values in group TmR were significantly smaller than those in group CR (P < .05). The maximum torque values in clockwise and counterclockwise directions in groups TqR and TmR were significantly smaller than those in group CR (P < .05). Under the present experimental conditions using TF Adaptive instruments, both torque-sensitive and time-dependent reciprocal rotation generated significantly lower maximum torque and may have advantages in reducing stress generation caused by screw-in forces when compared with continuous rotation. Copyright © 2017 American Association of Endodontists. Published by Elsevier Inc. All rights reserved.

Facile and green preparation of novel adsorption materials by combining sol-gel with ion imprinting technology for selective removal of Cu(II) ions from aqueous solution

NASA Astrophysics Data System (ADS)

Ren, Zhongqi; Zhu, Xinyan; Du, Jian; Kong, Delong; Wang, Nian; Wang, Zhuo; Wang, Qi; Liu, Wei; Li, Qunsheng; Zhou, Zhiyong

2018-03-01

A novel green adsorption polymer was prepared by ion imprinted technology in conjunction with sol-gel process under mild conditions for the selective removal of Cu(II) ions from aqueous solution. Effects of preparation conditions on adsorption performance of prepared polymers were studied. The ion-imprinted polymer was prepared using Cu(II) ion as template, N-[3-(2-aminoethylamino) propyl] trimethoxysilane (AAPTMS) as functional monomer and tetraethyl orthosilicate (TEOS) as cross-linker. Water was used as solvent in the whole preparation process. The imprinted and non-imprinted polymers were characterized by Fourier transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM), atomic force microscope (AFM), Brunauer, Emmett and Teller (BET) and zeta potential. Three-dimensional network structure was formed and functional monomer was successfully cross-linked into the network structure of polymers. Effects of adsorption conditions on adsorption performance of prepared polymers were studied too. The pH value is of great influence on adsorption behavior. Adsorption by ion-imprinted polymer was fast (adsorption equilibrium was reached within 60 min). The adsorption capacity of Cu(II) ion-imprinted polymer was always larger than that of non-imprinted polymer. Pseudo-second-order kinetics model and Freundlich isotherm model fitted well with adsorption data. The maximum adsorption capacity of Cu(II) ion-imprinted polymer was 39.82 mg·g-1. However, the preparation conditions used in this work are much milder than those reported in literatures. The Cu(II) ion-imprinted polymer showed high selectivity and relative selectivity coefficients for Pb(II), Ni(II), Cd(II) and Co(II). In addition, the prepared ion-imprinted polymer could be reused several times without significant loss of adsorption capacity.

78 FR 4134 - Notice of Intent To Prepare An Environmental Impact Statement (EIS) On the Proposal To Relocate...

Federal Register 2010, 2011, 2012, 2013, 2014

2013-01-18

... Proposal To Relocate the 18th Aggressor Squadron From Eielson Air Force Base (EAFB), Alaska to Joint Base... Eielson AFB, AK AGENCY: Pacific Air Forces, United States Air Force, DOD. ACTION: Notice of Intent... Provisions of NEPA (40 CFR parts 1500-1508), and Air Force policy and procedures (32 CFR part 989), the Air...

Preparation of Octadecyltrichlorosilane Nanopatterns Using Particle Lithography: An Atomic Force Microscopy Laboratory

ERIC Educational Resources Information Center

Highland, Zachary L.; Saner, ChaMarra K.; Garno, Jayne C.

2018-01-01

Experiments are described that involve undergraduates learning concepts of nanoscience and chemistry. Students prepare nanopatterns of organosilane films using protocols of particle lithography. A few basic techniques are needed to prepare samples, such as centrifuging, mixing, heating, and drying. Students obtain hands-on skills with nanoscale…

Preparing and Licensing Superintendents in Three Contiguous States

ERIC Educational Resources Information Center

Kowalski, Theodore J.

2008-01-01

Doubts about effectiveness and relevancy have made the academic preparation of superintendents a reform issue in most states. Attention being given to this topic has inevitably rekindled several fundamental questions such as: To what extent is the academic preparation of superintendents consistent among and within states? What forces control…

Assessment of work compatibility across employees' demographics: a case study.

PubMed

Basha, S A; Maiti, J

2017-03-01

'Work compatibility' (WC) is a multi-dimensional diagnostic tool for measuring human performance that affects safety performance of work force. There are a dearth of literature on the use of WC in industrial applications. In this study, the status of WC and its components across employees' demographics such as age, experience, designation and location of work were examined in a steel plant in India. Data on 119 employees collected using Demand-Energizer Instrument was analysed. The results revealed that supervisors perceive higher energizers, higher demands and low WC as compared to workers. Older and high experience employees perceive higher energizers, lower demands and high WC as compared to younger and less experienced employees. All employee groups perceive higher demand for physical environment and physical task content. The problematic work groups identified are less experienced employees and workers in 'allied sections'. The outcomes of the study help the management in three ways to improve human performance at work places: (i) it provides useful information about the work factors to be considered for intervention design, (ii) it identifies the work groups to be targeted while preparing intervention strategies and (iii) it can be used as a leading indicator of human performance.

An initiative to improve the management of clinically significant test results in a large health care network.

PubMed

Roy, Christopher L; Rothschild, Jeffrey M; Dighe, Anand S; Schiff, Gordon D; Graydon-Baker, Erin; Lenoci-Edwards, Jennifer; Dwyer, Cheryl; Khorasani, Ramin; Gandhi, Tejal K

2013-11-01

The failure of providers to communicate and follow up clinically significant test results (CSTR) is an important threat to patient safety. The Massachusetts Coalition for the Prevention of Medical Errors has endorsed the creation of systems to ensure that results can be received and acknowledged. In 2008 a task force was convened that represented clinicians, laboratories, radiology, patient safety, risk management, and information systems in a large health care network with the goals of providing recommendations and a road map for improvement in the management of CSTR and of implementing this improvement plan during the sub-force sequent five years. In drafting its charter, the task broadened the scope from "critical" results to "clinically significant" ones; clinically significant was defined as any result that requires further clinical action to avoid morbidity or mortality, regardless of the urgency of that action. The task force recommended four key areas for improvement--(1) standardization of policies and definitions, (2) robust identification of the patient's care team, (3) enhanced results management/tracking systems, and (4) centralized quality reporting and metrics. The task force faced many challenges in implementing these recommendations, including disagreements on definitions of CSTR and on who should have responsibility for CSTR, changes to established work flows, limitations of resources and of existing information systems, and definition of metrics. This large-scale effort to improve the communication and follow-up of CSTR in a health care network continues with ongoing work to address implementation challenges, refine policies, prepare for a new clinical information system platform, and identify new ways to measure the extent of this important safety problem.

13. Photocopy of photograph (original photograph in possession of 30th ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

13. Photocopy of photograph (original photograph in possession of 30th Audiovisual Squadron, Vandenberg Air Force Base, California). Photography by United States Air Force, date unknown. THRUST AUGMENTED THOR PREPARED FOR LAUNCH FROM SLC-3W. - Vandenberg Air Force Base, Space Launch Complex 3, Napa & Alden Roads, Lompoc, Santa Barbara County, CA

Employer Experiences and Expectations: Finding, Training, and Keeping Qualified Workers

ERIC Educational Resources Information Center

Perron, Rebecca

2011-01-01

The graying of the labor force, together with the recession of 2008-2010, has forced employers and prognosticators to take a hard look at workforce preparation, training, and planning. This employer research survey is one component of a larger project that explores the workforce, labor force projections, and employer views on training,…

48 CFR 252.223-7004 - Drug-free work force.

Code of Federal Regulations, 2013 CFR

2013-10-01

... 48 Federal Acquisition Regulations System 3 2013-10-01 2013-10-01 false Drug-free work force. 252... Provisions And Clauses 252.223-7004 Drug-free work force. As prescribed in 223.570-2, use the following clause: Drug-Free Work Force (SEP 1988) (a) Definitions. (1) Employee in a sensitive position, as used in...

48 CFR 252.223-7004 - Drug-free work force.

Code of Federal Regulations, 2012 CFR

2012-10-01

... 48 Federal Acquisition Regulations System 3 2012-10-01 2012-10-01 false Drug-free work force. 252... Provisions And Clauses 252.223-7004 Drug-free work force. As prescribed in 223.570-2, use the following clause: Drug-Free Work Force (SEP 1988) (a) Definitions. (1) Employee in a sensitive position, as used in...

48 CFR 252.223-7004 - Drug-free work force.

Code of Federal Regulations, 2011 CFR

2011-10-01

... 48 Federal Acquisition Regulations System 3 2011-10-01 2011-10-01 false Drug-free work force. 252... Provisions And Clauses 252.223-7004 Drug-free work force. As prescribed in 223.570-2, use the following clause: Drug-Free Work Force (SEP 1988) (a) Definitions. (1) Employee in a sensitive position, as used in...

48 CFR 252.223-7004 - Drug-free work force.

Code of Federal Regulations, 2014 CFR

2014-10-01

... 48 Federal Acquisition Regulations System 3 2014-10-01 2014-10-01 false Drug-free work force. 252... Provisions And Clauses 252.223-7004 Drug-free work force. As prescribed in 223.570-2, use the following clause: Drug-Free Work Force (SEP 1988) (a) Definitions. (1) Employee in a sensitive position, as used in...

48 CFR 252.223-7004 - Drug-free work force.

Code of Federal Regulations, 2010 CFR

2010-10-01

... 48 Federal Acquisition Regulations System 3 2010-10-01 2010-10-01 false Drug-free work force. 252... Provisions And Clauses 252.223-7004 Drug-free work force. As prescribed in 223.570-2, use the following clause: Drug-Free Work Force (SEP 1988) (a) Definitions. (1) Employee in a sensitive position, as used in...

40 CFR 35.936-14 - Force account work.

Code of Federal Regulations, 2010 CFR

2010-07-01

... 40 Protection of Environment 1 2010-07-01 2010-07-01 false Force account work. 35.936-14 Section... Force account work. (a) A grantee must secure the project officer's prior written approval for use of the force account method for (1) any step 1 or step 2 work in excess of $10,000; (2) any sewer...

Formulation and in vitro evaluation of theophylline matrix tablets prepared by direct compression: Effect of polymer blends

PubMed Central

El-Bagory, Ibrahim; Barakat, Nahla; Ibrahim, Mohamed A.; El-Enazi, Fouza

2011-01-01

The deformation mechanism of pharmaceutical powders, used in formulating directly compressed matrix tablets, affects the characteristics of the formed tablets. Three polymers of different deformation mechanisms were tested for their impact on theophylline directly compressed tablets namely Kollidon SR (KL SR, plastic deformation), Ethylcellulose (EC, elastic deformation) and Carnauba wax (CW, brittle deformation) at different compression forces. However, tablets based mainly on KL SR, the plastically deformed polymer (TN1) exhibited the highest hardness values compared to the other formulae which are based on either blends of KL SR with CW, the very brittle deformed polymer. The upper detected force for TN formulae and the lower punch force were found to dependent mainly on the powder deformation. This difference is attributed to the work done during the compression phase as well as the work lost during the decompression phase. Furthermore, the release profiles of TN from formulae TN2 and TN4 that are based on the composition (2KL SR:1EC) and (1KL SR:2EC), respectively, were consistent with different deformation mechanisms of KL SR and EC and on the physicochemical properties like the water absorptive capacity of EC. Upon increasing the weight ratio of KL SR (TN2), the release rate was greatly retarded (39.4%, 37.1%, 35.0% and 33.6% released after 8 h at 5, 10, 15 and 20 kN. PMID:24115902

Fertility and work-force participation: The experience of Melbourne Wives.

PubMed

Ware, H

1976-11-01

Summary Current and retrospective data on the fertility control, work-force participation intentions and practice of Melbourne wives are combined in an examination of the causal link between work-force participation and reduced family size. Stress is laid on the analysis of the interaction between work-force participation and fertility over time, taking into account the proportion of married life spent in the work-force, rather than relying exclusively on a measure of current participation, the only option available in the analysis of census-type data. The wide range of information available makes it possible to study the effects of work-force participation on wives of unimpaired fertility, as well as the different consequences of planned and unplanned participation, and of working in a variety of occupations and for a number of distinct reasons. Examination of the future fertility intentions and current contraceptive practice of the younger wives shows that working wives are not, in these respects, markedly different from their house-wife peers. Overall, the balance of the evidence indicates that in the majority of cases fertility influences work-force participation rather than the converse.

They Won't All Grow Up to Be You: Preparing Students for Diverse Careers

NASA Astrophysics Data System (ADS)

McNeil, Laurie

The Joint Task Force on Undergraduate Physics Programs (J-TUPP) was formed in response to a growing awareness in the physics community that undergraduate physics majors pursue a wide range of careers after graduation, with very few ending up employed as physics professors. The task force was charged to identify the skills and knowledge that undergraduate physics degree holders should possess to be well prepared for a diverse set of careers, and to provide guidance on how physicists could revise the undergraduate curriculum to improve the education of a diverse student population. Our report (issued in October 2016) is the result of the task force's reviews of employment data, surveys of employers, and reports generated by other disciplines, as well as meetings with physicists in selected industries and interviews with recent physics graduates employed in the private sector. As part of our study we also identified exemplary programs that provide models of how physics departments can ensure that all of their students are well prepared to pursue a wide range of career paths. I will summarize and illustrate the findings and recommendations contained in the task force's report.

Incorporating Space Science Content Into the Undergraduate Curriculum by the NASA Education Forums' Higher Education Working Group

NASA Astrophysics Data System (ADS)

Gross, N. A.; Buxner, S.; Cobabe-Ammann, E. A.; Fraknoi, A.; Moldwin, M.; Peticolas, L. M.; Low, R.; Schultz, G. R.

2013-12-01

As part of the NASA Education Forums, the Higher Education Working Group (HEWG) strives to support undergraduate science education through a variety of activities. These activities include: providing resource that incorporate space science topics into the existing undergraduate curriculum, understanding the role that community colleges play in STEM education and preparing STEM teachers, and identifying issues in diversity related to STEM education. To assess the best way of including space science into the undergraduate curriculum, the HEWG held a series of workshops and conducted surveys of undergraduate faculty who are conducting research in space science. During this engagement, the faculty expressed a need for a centralized repository of materials that can be used as part of already existing undergraduate courses in astronomy, physics, and earth science. Such a repository has since been developed, the 'EarthSpace Higher Education Clearing House (http://www.lpi.usra.edu/earthspace/) and it is still growing. Additional community tools, such as a newsletter, are provided through this website. To better understand the role and needs of community colleges, the HEWG undertook and extensive survey of community college STEM faculty. 187 faculty responded to the survey and the results show the extensive teaching load these faculty have, as well as the diverse demographics and the extent to which STEM teachers begin their preparation at 2 year institutions. Finally, the HEWG has begun to work on understanding the issues faced in increasing the diversity of the STEM work force. Progress and results of all this work will be summarized in this presentation.

Guanidine hydrochloride embedded polyurethanes as antimicrobial and absorptive wound dressing membranes with promising cytocompatibility.

PubMed

Sahraro, Maryam; Yeganeh, Hamid; Sorayya, Marziyeh

2016-02-01

Preparation and assessments of novel absorptive wound dressing materials with efficient antimicrobial activity as well as very good cytocompatibility were described in this work. An amine terminated poly(hexamethylene guanidine hydrochloride) was prepared and used as curing agent of different epoxy-terminated polyurethane prepolymers. The structures of prepared materials were elucidated by evaluation of their (1)H NMR and FTIR spectra. The recorded tensile strength of membranes confirmed the excellent dimensional stability of the film type dressings even at fully hydrated conditions. Therefore, these dressings could protect the wound bed from external forces during the healing period. The structurally optimized dressing membranes could preserve the desired moist environment over the wounded area, as a result of their balanced equilibrium, water absorption and water vapor transmission rate. Therefore, a very good condition for stimulation of self-healing of wound bed was attained. Also, owing to the presence of guanidine hydrochloride moieties embedded into the structure of dressings, efficient antimicrobial activity against Staphylococcus aureus, Pseudomonas aeruginosa and Candida albicans were detected. In vitro cytotoxicity assay of the prepared dressings revealed cytocompatibility of these materials against fibroblast cells. Therefore, they could support cell growth and proliferation at the wounded area. Copyright © 2015 Elsevier B.V. All rights reserved.

Target: Alcohol Abuse in the Hard-to-Reach Work Force. Ideas and Resources for Responding to Problems of the Hard-to-Reach Work Force.

ERIC Educational Resources Information Center

Informatics, Inc., Rockville, MD.

This guide is designed as a source of ideas and information for individuals and organizations interested in occupational alcoholism programs for the hard-to-reach work force. Following a brief overview of the problem and a report on progress in occupational alcoholism programming, a working definition of the hard-to-reach work force is offered;…

The Total Library *

PubMed Central

Annan, Gertrude L.

1968-01-01

Changing functions and techniques of today's libraries have led to questioning the very substance of the library of the future. Ralph Shaw points out that the total library must be “a living force for the enrichment of mankind.” The Medical Research Library of Brooklyn at its very inauguration is uniquely prepared and equipped to work toward that goal. It imaginatively serves the needs of the immediate area by generous sharing of resources, use of its computerized program, and participation in a state-wide system. The large collection of the Academy of Medicine of Brooklyn offers thousands of volumes for the historian, both great works as highlights of medical achievements and more modest contributions of both early and recent date. The total library must serve as an intellectual resource, as well as a mechanism for the rapid transfer of current information. PMID:5644795

Preparation of Professional Training Teachers for Network Cooperation between Educational Establishments during Labor Preparation

ERIC Educational Resources Information Center

Tarasjuk, Olga V.; Fedulova, Ksenia A.; Fedulova, Marina A.; Kryukova, Polina S.; Yadretsov, Vyacheslav ?.

2016-01-01

Relevance of the problem being investigated is conditioned by the necessity to arrange network cooperation between educational institutions during labor force preparation in the conditions of informatization of educational and technological processes. The aim of the article is to prove the necessity of including basics of network cooperation…

Energetic costs of producing muscle work and force in a cyclical human bouncing task

PubMed Central

Kuo, Arthur D.

2011-01-01

Muscles expend energy to perform active work during locomotion, but they may also expend significant energy to produce force, for example when tendons perform much of the work passively. The relative contributions of work and force to overall energy expenditure are unknown. We therefore measured the mechanics and energetics of a cyclical bouncing task, designed to control for work and force. We hypothesized that near bouncing resonance, little work would be performed actively by muscle, but the cyclical production of force would cost substantial metabolic energy. Human subjects (n = 9) bounced vertically about the ankles at inversely proportional frequencies (1–4 Hz) and amplitudes (15–4 mm), such that the overall rate of work performed on the body remained approximately constant (0.30 ± 0.06 W/kg), but the forces varied considerably. We used parameter identification to estimate series elasticity of the triceps surae tendon, as well as the work performed actively by muscle and passively by tendon. Net metabolic energy expenditure for bouncing at 1 Hz was 1.15 ± 0.31 W/kg, attributable mainly to active muscle work with an efficiency of 24 ± 3%. But at 3 Hz (near resonance), most of the work was performed passively, so that active muscle work could account for only 40% of the net metabolic rate of 0.76 ± 0.28 W/kg. Near resonance, a cost for cyclical force that increased with both amplitude and frequency of force accounted for at least as much of the total energy expenditure as a cost for work. Series elasticity reduces the need for active work, but energy must still be expended for force production. PMID:21212245

Inspection work on THEMIS at Astrotech

NASA Image and Video Library

2002-01-01

At Astrotech Space Operations, a worker prepares the THEMIS spacecraft for black/white light inspection. White light inspection assures the telemetry is operating. Black light inspection uses UVA fluorescence to detect possible particulate microcontamination, minute cracks or fluid leaks. THEMIS consists of five identical probes, the largest number of scientific satellites ever launched into orbit aboard a single rocket. This unique constellation of satellites will resolve the tantalizing mystery of what causes the spectacular sudden brightening of the aurora borealis and aurora australis - the fiery skies over the Earth's northern and southern polar regions. THEMIS is scheduled to launch Feb. 15 from Cape Canaveral Air Force Station.

Layered liquid crystal elastomer actuators.

PubMed

Guin, Tyler; Settle, Michael J; Kowalski, Benjamin A; Auguste, Anesia D; Beblo, Richard V; Reich, Gregory W; White, Timothy J

2018-06-28

Liquid crystalline elastomers (LCEs) are soft, anisotropic materials that exhibit large shape transformations when subjected to various stimuli. Here we demonstrate a facile approach to enhance the out-of-plane work capacity of these materials by an order of magnitude, to nearly 20 J/kg. The enhancement in force output is enabled by the development of a room temperature polymerizable composition used both to prepare individual films, organized via directed self-assembly to retain arrays of topological defect profiles, as well as act as an adhesive to combine the LCE layers. The material actuator is shown to displace a load >2500× heavier than its own weight nearly 0.5 mm.

Structural and magnetic analysis of Cu, Co substituted NiFe2O4 thin films

NASA Astrophysics Data System (ADS)

Sharma, Hakikat; Bala, Kanchan; Negi, N. S.

2016-05-01

In the present work we prepared NiFe2O4, Ni0.95Cu0.05Fe2O4 and Ni0.94Cu0.05Co0.01 Fe2O4 thin films by metallo-organic decomposition method (MOD) using spin coating technique. The thin films were analyzed by X-ray diffractometer (XRD) and Atomic force microscope (AFM) for structural studies. The XRD patterns confirmed the ferrite phase of thin films. From AFM, we analyzed surface morphology, calculated grain size (GS) and root mean square roughness (RMSR). Room temperature magnetic properties were investigated by vibrating sample magnetometer (VSM).

KSC-03pd0516

NASA Image and Video Library

2003-02-19

KENNEDY SPACE CENTER, FLA. - At NASA's Family & Community Mars Exploration Day, held in Cape Canaveral, Fla., James Garvin, lead scientist for the Mars Exploration Program, talks to students about the Mars Exploration Rover. Garvin is standing next to a replica of the Rover. The event informed students and the general public about Florida's key role as NASA's "Gateway to Mars" and offered an opportunity to meet with scientists, engineers, educators and others working Mars exploration missions. The Mars Exploration Rovers are being prepared for launch this spring aboard Boeing Delta II rockets from the Cape Canaveral Air Force Station. They will land on Mars and start exploring in January 2004.

KSC-03PD-0516

NASA Technical Reports Server (NTRS)

2003-01-01

KENNEDY SPACE CENTER, FLA. - At NASA's Family & Community Mars Exploration Day, held in Cape Canaveral, Fla., James Garvin, lead scientist for the Mars Exploration Program, talks to students about the Mars Exploration Rover. Garvin is standing next to a replica of the Rover. The event informed students and the general public about Florida's key role as NASA's 'Gateway to Mars' and offered an opportunity to meet with scientists, engineers, educators and others working Mars exploration missions. The Mars Exploration Rovers are being prepared for launch this spring aboard Boeing Delta II rockets from the Cape Canaveral Air Force Station. They will land on Mars and start exploring in January 2004.

KSC-03pd0515

NASA Image and Video Library

2003-02-19

KENNEDY SPACE CENTER, FLA. -- In a demonstration of the agility of the Mars Exploration Rover, a model of the Rover rolls over the prone bodies of two volunteer students during NASA's Family & Community Mars Exploration Day held in Cape Canaveral, Fla. The event informed students and the general public about Florida's key role as NASA's "Gateway to Mars" and offered an opportunity to meet with scientists, engineers, educators and others working Mars exploration missions. The Mars Exploration Rovers are being prepared for launch this spring aboard Boeing Delta II rockets from the Cape Canaveral Air Force Station. They will land on Mars and start exploring in January 2004.

KSC-03PD-0515

NASA Technical Reports Server (NTRS)

2003-01-01

KENNEDY SPACE CENTER, FLA. -- In a demonstration of the agility of the Mars Exploration Rover, a model of the Rover rolls over the prone bodies of two volunteer students during NASA's Family & Community Mars Exploration Day held in Cape Canaveral, Fla. The event informed students and the general public about Florida's key role as NASA's 'Gateway to Mars' and offered an opportunity to meet with scientists, engineers, educators and others working Mars exploration missions. The Mars Exploration Rovers are being prepared for launch this spring aboard Boeing Delta II rockets from the Cape Canaveral Air Force Station. They will land on Mars and start exploring in January 2004.

Metallurgical Characterization of Aluminum Powder Consolidation.

DTIC Science & Technology

1984-09-01

implied, of the Air Force * Office of Scientific Research of the U.S. Government. LaJ DT[ Prepared for: MR 2 8 M985 UNITED STATES AIR FORCE Air Force...Office of Scientific ResearchE Boiling Air Force Base, DC 20332 85 03 12 083 UNCLASSIFIED SECURITY CLASSIFICATION OF THIS PAGE (When Dota Entered). REPORT...Corporation P.O. Box 516 St. Louis, MO 63166 WiOL r - O * 11. CONTROLLING OFFICE NAME AND ADDRESS 12. REPORT DATE Air Force Office of Scientific

Atomic force microscopy of adsorbed proteoglycan mimetic nanoparticles: Toward new glycocalyx-mimetic model surfaces.

PubMed

Hedayati, Mohammadhasan; Kipper, Matt J

2018-06-15

Blood vessels present a dense, non-uniform, polysaccharide-rich layer, called the endothelial glycocalyx. The polysaccharides in the glycocalyx include polyanionic glycosaminoglycans (GAGs). This polysaccharide-rich surface has excellent and unique blood compatibility. We report new methods for preparing and characterizing dense GAG surfaces that can serve as models of the vascular endothelial glycocalyx. The GAG-rich surfaces are prepared by adsorbing heparin or chondroitin sulfate-containing polyelectrolyte complex nanoparticles (PCNs) to chitosan-hyaluronan polyelectrolyte multilayers (PEMs). The surfaces are characterized by PeakForce tapping atomic force microscopy, both in air and in aqueous pH 7.4 buffer, and by PeakForce quantitative nanomechanics (PF-QNM) mode with high spatial resolution. These new surfaces provide access to heparin-rich or chondroitin sulfate-rich coatings that mimic both composition and nanoscale structural features of the vascular endothelial glycocalyx. Copyright © 2018. Published by Elsevier Ltd.

Modulation of post-movement beta rebound by contraction force and rate of force development.

PubMed

Fry, Adam; Mullinger, Karen J; O'Neill, George C; Barratt, Eleanor L; Morris, Peter G; Bauer, Markus; Folland, Jonathan P; Brookes, Matthew J

2016-07-01

Movement induced modulation of the beta rhythm is one of the most robust neural oscillatory phenomena in the brain. In the preparation and execution phases of movement, a loss in beta amplitude is observed [movement related beta decrease (MRBD)]. This is followed by a rebound above baseline on movement cessation [post movement beta rebound (PMBR)]. These effects have been measured widely, and recent work suggests that they may have significant importance. Specifically, they have potential to form the basis of biomarkers for disease, and have been used in neuroscience applications ranging from brain computer interfaces to markers of neural plasticity. However, despite the robust nature of both MRBD and PMBR, the phenomena themselves are poorly understood. In this study, we characterise MRBD and PMBR during a carefully controlled isometric wrist flexion paradigm, isolating two fundamental movement parameters; force output, and the rate of force development (RFD). Our results show that neither altered force output nor RFD has a significant effect on MRBD. In contrast, PMBR was altered by both parameters. Higher force output results in greater PMBR amplitude, and greater RFD results in a PMBR which is higher in amplitude and shorter in duration. These findings demonstrate that careful control of movement parameters can systematically change PMBR. Further, for temporally protracted movements, the PMBR can be over 7 s in duration. This means accurate control of movement and judicious selection of paradigm parameters are critical in future clinical and basic neuroscientific studies of sensorimotor beta oscillations. Hum Brain Mapp 37:2493-2511, 2016. © 2016 Wiley Periodicals, Inc. © 2016 Wiley Periodicals, Inc.

Switching "on" and "off" the adhesion in stimuli-responsive elastomers.

PubMed

Kaiser, S; Radl, S V; Manhart, J; Ayalur-Karunakaran, S; Griesser, T; Moser, A; Ganser, C; Teichert, C; Kern, W; Schlögl, S

2018-03-28

The present work aims at the preparation of dry adhesives with switchable bonding properties by using the reversible nature of the [4πs+4πs] cycloaddition of anthracenes. Photo-responsive hydrogenated carboxylated nitrile butadiene rubber with photo-responsive pendant anthracene groups is prepared by one-pot synthesis. The formation of 3D networks relies on the photodimerization of the anthracene moieties upon UV exposure (λ > 300 nm). Controlled cleavage of the crosslink sites is achieved by either deep UV exposure (λ = 254 nm) or thermal dissociation at 70 °C. The kinetics of the optical and thermal cleavage routes are compared in thin films using UV-vis spectroscopy and their influence on the reversibility of the network is detailed. Going from thin films to free standing samples the modulation of the network structure and thermo-mechanical properties over repeated crosslinking and cleavage cycles are characterized by low-field NMR spectroscopy and dynamic mechanical analysis. The applicability of the stimuli-responsive networks as adhesives with reversible bonding properties is demonstrated. The results evidence that the reversibility of the crosslinking reaction enables a controlled switching "on" and "off" of adhesion properties. The recovery of the adhesion force amounts to 75 and 80% for photo- and thermal dissociation, respectively. Spatial control of adhesion properties is evidenced by adhesion force mapping experiments of photo-patterned films.

Evaluation Report on the Airman Development Course.

ERIC Educational Resources Information Center

Valverde, Horace H.

An evaluation is presented of the Reese Air Force Base, Texas, Airman Development Course which was designed to be a continuation of the airman basic military training conducted at Lackland Air Force Base, Texas. The Airman Development Course was prepared by training personnel at Reese Air Force Base. The purpose of the course was to increase the…

National Library of Education Advisory Task Force. Briefing Book.

ERIC Educational Resources Information Center

National Library of Education (ED/OERI), Washington, DC.

This briefing book with appendices was prepared for the initial meetings of the National Library of Education Advisory Task Force (NLE/ATF), in March 1996. An agenda for this meeting is included in the briefing book. The first section, "Governing Authorities for NLE and the Advisory Task Force," contains a copy of Public Law 103-227,…

Assessing differences in hours worked between male and female dentists: an analysis of cross-sectional national survey data from 1979 through 1999.

PubMed

Walton, Surrey M; Byck, Gayle R; Cooksey, Judith A; Kaste, Linda M

2004-05-01

Women are increasingly entering the dental work force. This study examines the impact of sex, age and other demographic characteristics on dentists' work force participation and on hours worked from 1979 through 1999. The study drew on cross-sectional data on dentists (4,209 men and 354 women) from national population surveys conducted by the U.S. Bureau of Labor Statistics from 1979 through 1999. The authors used descriptive statistics and regression analyses to examine sex differences in work force participation and in hours worked across age, as well as other factors. Work force participation was high for both men and women. Men worked more hours and worked part time less frequently; they worked more than 42 hours per week more frequently. Older dentists worked fewer hours, with a larger impact of age seen among men. Having children had a significantly greater effect on the number of hours worked per week among female dentists than among male dentists. There were significant differences in dentists' hours worked by sex and by age. The consistency of the results with past studies suggests these differences will hold in the near future. Women's entry into the dental work force has been significant and has helped maintain the supply of dentists. Sex differences in the work force should be considered in evaluating the supply of dentists and related work force policy.

Depth and breadth: Bridging the gap between scientific inquiry and high-stakes testing with diverse junior high school students

NASA Astrophysics Data System (ADS)

Kang, Jee Sun Emily

This study explored how inquiry-based teaching and learning processes occurred in two teachers' diverse 8th grade Physical Science classrooms in a Program Improvement junior high school within the context of high-stakes standardized testing. Instructors for the courses examined included not only the two 8th grade science teachers, but also graduate fellows from a nearby university. Research was drawn from inquiry-based instruction in science education, the achievement gap, and the high stakes testing movement, as well as situated learning theory to understand how opportunities for inquiry were negotiated within the diverse classroom context. Transcripts of taped class sessions; student work samples; interviews of teachers and students; and scores from the California Standards Test in science were collected and analyzed. Findings indicated that the teachers provided structured inquiry in order to support their students in learning about forces and to prepare them for the standardized test. Teachers also supported students in generating evidence-based explanations, connecting inquiry-based investigations with content on forces, proficiently using science vocabulary, and connecting concepts about forces to their daily lives. Findings from classroom data revealed constraints to student learning: students' limited language proficiency, peer counter culture, and limited time. Supports were evidenced as well: graduate fellows' support during investigations, teachers' guided questioning, standardized test preparation, literacy support, and home-school connections. There was no statistical difference in achievement on the Forces Unit test or science standardized test between classes with graduate fellows and without fellows. There was also no statistical difference in student performance between the two teachers' classrooms, even though their teaching styles were very different. However, there was a strong correlation between students' achievement on the chapter test and their achievement on the Forces portion of the CST. Students' English language proficiency and socioeconomic status were also strongly correlated with their achievement on the standardized test. Notwithstanding the constraints of standardized testing, the teachers had students practice the heart of inquiry -- to connect evidence with explanations and process with content. Engaging in inquiry-based instruction provided a context for students, even English language learners, to demonstrate their knowledge of forces. Students had stronger and more detailed ideas about concepts when they engaged in activities that were tightly connected to the concepts, as well as to their lives and experiences.

Development and Performance Evaluation of Image-Based Robotic Waxing System for Detailing Automobiles

PubMed Central

Hsu, Bing-Cheng

2018-01-01

Waxing is an important aspect of automobile detailing, aimed at protecting the finish of the car and preventing rust. At present, this delicate work is conducted manually due to the need for iterative adjustments to achieve acceptable quality. This paper presents a robotic waxing system in which surface images are used to evaluate the quality of the finish. An RGB-D camera is used to build a point cloud that details the sheet metal components to enable path planning for a robot manipulator. The robot is equipped with a multi-axis force sensor to measure and control the forces involved in the application and buffing of wax. Images of sheet metal components that were waxed by experienced car detailers were analyzed using image processing algorithms. A Gaussian distribution function and its parameterized values were obtained from the images for use as a performance criterion in evaluating the quality of surfaces prepared by the robotic waxing system. Waxing force and dwell time were optimized using a mathematical model based on the image-based criterion used to measure waxing performance. Experimental results demonstrate the feasibility of the proposed robotic waxing system and image-based performance evaluation scheme. PMID:29757940

Development and Performance Evaluation of Image-Based Robotic Waxing System for Detailing Automobiles.

PubMed

Lin, Chi-Ying; Hsu, Bing-Cheng

2018-05-14

Waxing is an important aspect of automobile detailing, aimed at protecting the finish of the car and preventing rust. At present, this delicate work is conducted manually due to the need for iterative adjustments to achieve acceptable quality. This paper presents a robotic waxing system in which surface images are used to evaluate the quality of the finish. An RGB-D camera is used to build a point cloud that details the sheet metal components to enable path planning for a robot manipulator. The robot is equipped with a multi-axis force sensor to measure and control the forces involved in the application and buffing of wax. Images of sheet metal components that were waxed by experienced car detailers were analyzed using image processing algorithms. A Gaussian distribution function and its parameterized values were obtained from the images for use as a performance criterion in evaluating the quality of surfaces prepared by the robotic waxing system. Waxing force and dwell time were optimized using a mathematical model based on the image-based criterion used to measure waxing performance. Experimental results demonstrate the feasibility of the proposed robotic waxing system and image-based performance evaluation scheme.

The health sciences librarian in medical education: a vital pathways project task force.

PubMed

Schwartz, Diane G; Blobaum, Paul M; Shipman, Jean P; Markwell, Linda Garr; Marshall, Joanne Gard

2009-10-01

The Medical Education Task Force of the Task Force on Vital Pathways for Hospital Librarians reviewed current and future roles of health sciences librarians in medical education at the graduate and undergraduate levels and worked with national organizations to integrate library services, education, and staff into the requirements for training medical students and residents. Standards for medical education accreditation programs were studied, and a literature search was conducted on the topic of the role of the health sciences librarian in medical education. Expectations for library and information services in current standards were documented, and a draft standard prepared. A comprehensive bibliography on the role of the health sciences librarian in medical education was completed, and an analysis of the services provided by health sciences librarians was created. An essential role and responsibility of the health sciences librarian will be to provide the health care professional with the skills needed to access, manage, and use library and information resources effectively. Validation and recognition of the health sciences librarian's contributions to medical education by accrediting agencies will be critical. The opportunity lies in health sciences librarians embracing the diverse roles that can be served in this vital activity, regardless of accrediting agency mandates.

Preparation of isolated biomolecules for SFM observations: T4 bacteriophage as a test sample.

PubMed Central

Droz, E; Taborelli, M; Wells, T N; Descouts, P

1993-01-01

The T4 bacteriophage has been used to investigate protocols for the preparation of samples for scanning force microscopy in air, in order to obtaining reproducible images. The resolution of images and the distribution of bacteriophages on the substrate depends on the buffer type, its concentration, the surface treatment of substrate, and the method of deposition. The best imaging conditions for the phages require dilution in a volatile buffer at low ionic strength and adsorption onto hydrophilic surfaces. When imaging with the scanning force microscopy the quality of the images is influenced by the vertical and lateral forces applied on the sample and by the tip geometry. Images FIGURE 1 FIGURE 2 FIGURE 4 FIGURE 5 FIGURE 6 PMID:8241398

Bionetics Company technician preparing to remove rats from shipping container

NASA Technical Reports Server (NTRS)

1985-01-01

A Bionetics Company technician in Hanger L at Cape Canaveral Air Force Station, is preparing to remove 5 rats from their shipping container. They will fly aboard the shuttle Challenger in the Spacelab module.

Evaluation of preparation methods for suspended nano-objects on substrates for dimensional measurements by atomic force microscopy

PubMed Central

Göhler, Daniel; Wessely, Benno; Stintz, Michael; Lazzerini, Giovanni Mattia; Yacoot, Andrew

2017-01-01

Dimensional measurements on nano-objects by atomic force microscopy (AFM) require samples of safely fixed and well individualized particles with a suitable surface-specific particle number on flat and clean substrates. Several known and proven particle preparation methods, i.e., membrane filtration, drying, rinsing, dip coating as well as electrostatic and thermal precipitation, were performed by means of scanning electron microscopy to examine their suitability for preparing samples for dimensional AFM measurements. Different suspensions of nano-objects (with varying material, size and shape) stabilized in aqueous solutions were prepared therefore on different flat substrates. The drop-drying method was found to be the most suitable one for the analysed suspensions, because it does not require expensive dedicated equipment and led to a uniform local distribution of individualized nano-objects. Traceable AFM measurements based on Si and SiO2 coated substrates confirmed the suitability of this technique. PMID:28904839

Evaluation of preparation methods for suspended nano-objects on substrates for dimensional measurements by atomic force microscopy.

PubMed

Fiala, Petra; Göhler, Daniel; Wessely, Benno; Stintz, Michael; Lazzerini, Giovanni Mattia; Yacoot, Andrew

2017-01-01

Dimensional measurements on nano-objects by atomic force microscopy (AFM) require samples of safely fixed and well individualized particles with a suitable surface-specific particle number on flat and clean substrates. Several known and proven particle preparation methods, i.e., membrane filtration, drying, rinsing, dip coating as well as electrostatic and thermal precipitation, were performed by means of scanning electron microscopy to examine their suitability for preparing samples for dimensional AFM measurements. Different suspensions of nano-objects (with varying material, size and shape) stabilized in aqueous solutions were prepared therefore on different flat substrates. The drop-drying method was found to be the most suitable one for the analysed suspensions, because it does not require expensive dedicated equipment and led to a uniform local distribution of individualized nano-objects. Traceable AFM measurements based on Si and SiO 2 coated substrates confirmed the suitability of this technique.

Japan’s Territorial Disputes: CNA Maritime Asia Project: Workshop Three

DTIC Science & Technology

2013-06-01

strengthen, their exercise programs with the Japan Self -Defense Forces (JSDF). These exercises prepare both militaries to deter the use of force and, if...around the islands should be noted. After Lee’s visit, Korea mobilized its air defenses when it claimed a Japanese Self -Defense Force helicopter...lock incidents reported by Japan’s Maritime Self -Defense Force, the first against a destroyer-based helicopter and the second against the frigate

Chemical Vapor Deposition of Multispectral Domes

DTIC Science & Technology

1975-04-01

optical testing, was also cut out as indicated in Figure 10. The image spoiling measureinents were performed at the Air Force Avionics Laboratory on...AD-A014 362 CHEMICAL VAPOR DEPOSITION OF MULTISPECTRAL DOMES B. A. diBenedetto, et al Raytheon Company Prepared for: Air Force Materials Laboratory...Approved for public release; distribution unlimited. ) F) .• •~~EP 7 ’+ i.i AIR FORCE MATERIALS LABORATORY AIR FORCE SYSTEMS COMMAND WRIGHT-PATrERSON AIR

3 CFR - White House Task Force on Middle-Class Working Families

Code of Federal Regulations, 2010 CFR

2010-01-01

... 3 The President 1 2010-01-01 2010-01-01 false White House Task Force on Middle-Class Working... Task Force on Middle-Class Working Families Memorandum for the Heads of Executive Departments and... times. To these ends, I hereby direct the following: Section 1. White House Task Force on Middle-Class...

Dental work force strategies during a period of change and uncertainty.

PubMed

Brown, L J

2001-12-01

Both supply and demand influence the ability of the dental work force to adequately and efficiently provide dental care to a U.S. population growing in size and diversity. Major changes are occurring on both sides of the dental care market. Among factors shaping the demand for dental care are changing disease patterns, shifting population demographics, the extent and features of third-party payment, and growth of the economy and the population. The capacity of the dental work force to provide care is influenced by enhancements of productivity and numbers of dental health personnel, as well as their demographic and practice characteristics. The full impact of these changes is difficult to predict. The dentist-to-population ratio does not reflect all the factors that must be considered to develop an effective dental work force policy. Nationally, the dental work force is likely to be adequate for the next several years, but regional work force imbalances appear to exist and may get worse. Against this backdrop of change and uncertainty, future dental work force strategies should strive for short-term responsiveness while avoiding long-term inflexibility. Trends in the work force must be continually monitored. Thorough analysis is required, and action should be taken when necessary.

KSC-2009-5387

NASA Image and Video Library

2009-09-26

VANDENBERG AIR FORCE BASE, Calif. -- At the Astrotech processing facility on Vandenberg Air Force Base in California, workers prepare a payload adapter ring for NASA's Wide-field Infrared Survey Explorer, or WISE, in preparation for mating to its Payload Attach Fitting. The satellite will survey the entire sky at infrared wavelengths, creating a cosmic clearinghouse of hundreds of millions of objects which will be catalogued and provide a vast storehouse of knowledge about the solar system, the Milky Way, and the universe. Launch is scheduled for Dec. 7. Photo credit: NASA/Doug Kolkow

Single-Cell Functional Analysis of Stem-Cell Derived Cardiomyocytes on Micropatterned Flexible Substrates.

PubMed

Kijlstra, Jan David; Hu, Dongjian; van der Meer, Peter; Domian, Ibrahim J

2017-11-15

Human pluripotent stem-cell derived cardiomyocytes (hPSC-CMs) hold great promise for applications in human disease modeling, drug discovery, cardiotoxicity screening, and, ultimately, regenerative medicine. The ability to study multiple parameters of hPSC-CM function, such as contractile and electrical activity, calcium cycling, and force generation, is therefore of paramount importance. hPSC-CMs cultured on stiff substrates like glass or polystyrene do not have the ability to shorten during contraction, making them less suitable for the study of hPSC-CM contractile function. Other approaches require highly specialized hardware and are difficult to reproduce. Here we describe a protocol for the preparation of hPSC-CMs on soft substrates that enable shortening, and subsequently the simultaneous quantitative analysis of their contractile and electrical activity, calcium cycling, and force generation at single-cell resolution. This protocol requires only affordable and readily available materials and works with standard imaging hardware. © 2017 by John Wiley & Sons, Inc. Copyright © 2017 John Wiley & Sons, Inc.

Microarc oxidation coating covered Ti implants with micro-scale gouges formed by a multi-step treatment for improving osseointegration.

PubMed

Bai, Yixin; Zhou, Rui; Cao, Jianyun; Wei, Daqing; Du, Qing; Li, Baoqiang; Wang, Yaming; Jia, Dechang; Zhou, Yu

2017-07-01

The sub-microporous microarc oxidation (MAO) coating covered Ti implant with micro-scale gouges has been fabricated via a multi-step MAO process to overcome the compromised bone-implant integration. The as-prepared implant has been further mediated by post-heat treatment to compare the effects of -OH functional group and the nano-scale orange peel-like morphology on osseointegration. The bone regeneration, bone-implant contact interface, and biomechanical push-out force of the modified Ti implant have been discussed thoroughly in this work. The greatly improved push-out force for the MAO coated Ti implants with micro-scale gouges could be attributed to the excellent mechanical interlocking effect between implants and biologically meshed bone tissues. Attributed to the -OH functional group which promotes synostosis between the biologically meshed bone and the gouge surface of implant, the multi-step MAO process could be an effective strategy to improve the osseointegration of Ti implant. Copyright © 2017 Elsevier B.V. All rights reserved.

Structural, magnetic, and transport properties of Permalloy for spintronic experiments

DOE Office of Scientific and Technical Information (OSTI.GOV)

Nahrwold, Gesche; Scholtyssek, Jan M.; Motl-Ziegler, Sandra

2010-07-15

Permalloy (Ni{sub 80}Fe{sub 20}) is broadly used to prepare magnetic nanostructures for high-frequency experiments where the magnetization is either excited by electrical currents or magnetic fields. Detailed knowledge of the material properties is mandatory for thorough understanding its magnetization dynamics. In this work, thin Permalloy films are grown by dc-magnetron sputtering on heated substrates and by thermal evaporation with subsequent annealing. The specific resistance is determined by van der Pauw methods. Point-contact Andreev reflection is employed to determine the spin polarization of the films. The topography is imaged by atomic-force microscopy, and the magnetic microstructure by magnetic-force microscopy. Transmission-electron microscopymore » and transmission-electron diffraction are performed to determine atomic composition, crystal structure, and morphology. From ferromagnetic resonance absorption spectra the saturation magnetization, the anisotropy, and the Gilbert damping parameter are determined. Coercive fields and anisotropy are measured by magneto-optical Kerr magnetometry. The sum of the findings enables optimization of Permalloy for spintronic experiments.« less

Pegasus XL CYGNSS Fairing Mate and Black Light Test

NASA Image and Video Library

2016-11-14

Technicians with Orbital ATK have installed the first half of the Pegasus XL fairing around NASA’s Cyclone Global Navigation Satellite System (CYGNSS) in Building 1555 at Vandenberg Air Force Base in California. Work is underway to install the second half of the fairing. CYGNSS is being prepared at Vandenberg, and then will be transported to NASA’s Kennedy Space Center in Florida aboard the Orbital ATK Pegasus XL rocket which will be attached to the Orbital ATK L-1011 carrier aircraft. CYGNSS will launch on the Pegasus XL rocket from the Skid Strip at Cape Canaveral Air Force Station. CYGNSS will make frequent and accurate measurements of ocean surface winds throughout the life cycle of tropical storms and hurricanes. The data that CYGNSS provides will enable scientists to probe key air-sea interaction processes that take place near the core of storms, which are rapidly changing and play a critical role in the beginning and intensification of hurricanes.

Grasp Assist Device with Automatic Mode Control Logic

NASA Technical Reports Server (NTRS)

Laske, Evan (Inventor); Davis, Donald R. (Inventor); Ihrke, Chris A. (Inventor)

2018-01-01

A system includes a glove, sensors, actuator assemblies, and controller. The sensors include load sensors which measure an actual grasping force and attitude sensors which determine a glove attitude. The actuator assembly provides a grasp assist force to the glove. Respective locations of work cells in the work environment and permitted work tasks for each work cell are programmed into the controller. The controller detects the glove location and attitude. A work task is selected by the controller for the location. The controller calculates a required grasp assist force using measured actual grasping forces from the load sensors. The required grasp assist force is applied via the glove using the actuator assembly to thereby assist the operator in performing the identified work task.

State Workforce Policy Initiative.

ERIC Educational Resources Information Center

Public/Private Ventures, Philadelphia, PA.

Surging demand for workers, growing income inequality, and passage of welfare reforms have made work force development one of the United States' key national concerns. Public/Private Ventures has been working with various states to design work force development strategies that seek to address the concerns of many work force development specialists…

Arizona Community Colleges: Report of the Task Force on Community College Enrollment Growth Planning.

ERIC Educational Resources Information Center

Arizona State Board of Directors for Community Colleges, Phoenix.

The Task Force on Enrollment Growth Planning (TFEGP), authorized in 1992 by the State Board of Directors for Community Colleges (SBDCC) of Arizona, includes representatives from each community college as well as staff from SBDCC office. The Task Force was created to prepare enrollment growth estimates for community colleges through the year 2010;…

In memory of professor Czesław Niżankowski, Head of the Department of Anatomy, Wroclaw Medical University.

PubMed

Kacała, Ryszard R; Wronecki, Krzysztof; Kacała, Arkadiusz; Domagała, Zygmunt; Porwolik, Michał

2018-03-20

Professor Czesław Niżankowski was an academic teacher and researcher at several universities; head of the Department of Anatomy at Wroclaw Medical University (1966-1982); and head of the Department of Biological Sciences at the Wrocław School of Physical Education (since 1972 University School of Physical Education in Wrocław), as well as the chancellor there. He contributed greatly to the development of morphological sciences, supervising many doctoral and post-doctoral works. He dedicated considerable time to the preparation of anatomical specimens of lungs, hearts and organs of the gastrointestinal tract. At the Museum of Anatomy, there are over 100 specimens of lungs prepared using the forced air technique improved by Professor Niżankowski, along with specimens of the bronchial tree and vascular system prepared using a corrosive technique. Professor Niżankowski was an active member of scientific societies in Wrocław and in other cities in Poland. For his accomplishments, he received a number of ministerial and state awards, including the Knight's Cross of the Order of Polonia Restituta, and was granted an honorary doctorate by Wroclaw Medical University.

Human resource development for nuclear generation - from the perspective of a utility company

NASA Astrophysics Data System (ADS)

Kahar, Wan Shakirah Wan Abdul; Mostafa, Nor Azlan; Salim, Mohd Faiz

2017-01-01

Malaysia is currently in the planning phase of its nuclear power program, with the first unit targeted to be operational in 2030. Training of nuclear power plant (NPP) staffs are usually long and rigorous due to the complexity and safety aspects of nuclear power. As the sole electricity utility in the country, it is therefore essential that Tenaga Nasional Berhad (TNB) prepares early in developing its human resource and nuclear expertise as a potential NPP owner-operator. A utility also has to be prudent in managing its work force efficiently and effectively, while ensuring that adequate preparations are being made to acquire the necessary nuclear knowledge with sufficient training lead time. There are several approaches to training that can be taken by a utility company with no experience in nuclear power. These include conducting feasibility studies and benchmarking exercises, preparing long term human resource development, increasing the exposure on nuclear power technology to both the top management and general staff, and employing the assistance of relevant agencies locally and abroad. This paper discusses the activities done and steps taken by TNB in its human resource development for Malaysia's nuclear power program.

Kinetic and calorimetric study of the adsorption of dyes on mesoporous activated carbon prepared from coconut coir dust.

PubMed

Macedo, Jeremias de Souza; da Costa Júnior, Nivan Bezerra; Almeida, Luis Eduardo; Vieira, Eunice Fragoso da Silva; Cestari, Antonio Reinaldo; Gimenez, Iara de Fátima; Villarreal Carreño, Neftali Lênin; Barreto, Ledjane Silva

2006-06-15

Mesoporous activated carbon has been prepared from coconut coir dust as support for adsorption of some model dye molecules from aqueous solutions. The methylene blue (MB) and remazol yellow (RY) molecules were chosen for study of the adsorption capacity of cationic and anionic dyes onto prepared activated carbon. The adsorption kinetics was studied with the Lagergren first- and pseudo-second-order kinetic models as well as the intraparticle diffusion model. The results for both dyes suggested a multimechanism sorption process. The adsorption mechanisms in the systems dyes/AC follow pseudo-second-order kinetics with a significant contribution of intraparticle diffusion. The samples simultaneously present acidic and basic sites able to act as anchoring sites for basic and acidic dyes, respectively. Calorimetric studies reveal that dyes/AC interaction forces are correlated with the pH of the solution, which can be related to the charge distribution on the AC surface. These AC samples also exhibited very short equilibrium times for the adsorption of both dyes, which is an economically favorable requisite for the activated carbon described in this work, in addition to the local abundance of the raw material.

Institutional food as a lever for improving health in cities: the case of New York City.

PubMed

Tsui, E K; Wurwarg, J; Poppendieck, J; Deutsch, J; Freudenberg, N

2015-04-01

To describe and examine the factors that most facilitate and impede the provision of healthy foods in a complex institutional food system. Comparative case study of three institutional food settings in New York City. Document review and interviews with relevant city government staff. Factors that facilitate and impede the provision of healthy food vary across institutional food settings, and particularly between centralized and decentralized settings. Generally pro-health factors include centralized purchasing and the ability to work with vendors to formulate items to improve nutritional quality, though decentralized purchasing may offer more flexibility to work with vendors offering healthier food items and to respond to consumer preferences. Factors most often working against health in more centralized systems include financing constraints that are unique to particular settings. In less centralized systems, factors working against health may include both financing constraints and factors that are site-specific, relating to preparation and equipment. Making changes to institutional food systems that will meaningfully influence public health requires a detailed understanding of the diverse systems supporting and shaping public food provision. Ultimately, the cases in this study demonstrate that agency staff typically would like to provide healthier foods, but often feel limited by the competing objectives of affordability and consumer preference. Their ability to address these competing objectives is shaped by a combination of both forces external to the institution, like nutritional regulations, and internal forces, like an agency's structure, and motivation on the part of staff. Copyright © 2014 The Royal Society for Public Health. Published by Elsevier Ltd. All rights reserved.

Deflagration to Shock to Detonation Transition of Energetic Propellants.

DTIC Science & Technology

1984-07-01

Champaign Urbana, IL 61801 Prepared for: Air Force Office of Scientific Research Aerospace Sciences Directorate: Bldg. 410 Boiling Air Force Base, DC 20332...Program Manager: Dr. Henry R. Radoski For Research Performed under ()Grant AFOSR 81-0145 During Period I June 1983 through 30 May 1984 AIR ,,1 C~i...ADDRESS 12. REPORT DATE / Air Force Office of Scientific Research/Q July 1984 Building 410; ATTN: Henry R. Radoski 13. NUMBER OF AGES Bolling Air Force

Epidemoligic Investigation of Health Effects in Air Force Personnel Following Exposure to Herbicides: Baseline Questionnaires

DTIC Science & Technology

1982-11-01

19M I Prepared for: The Surgeon General ~, United States Air Force Washington, D.C. 20314 USAF SCHOOL OF AEROSPACE MEDICINE Brooks Air Force Base...School of Aerospace Medicine , Aerospace Medical Division, AFSC, Brooks Air Force Base, Texas, under job order 2767-00-01. la When Government drawings...Wolfe. Ljeujenant; Colonel, USAF. M C S F. IlFONMING ORGANIZATION NAMS AND AODRESS 10. PROGRAM ELEMENT. PROJECT, TASKUSAF School of Aerospace Medicine

Influence of Waiting Time on the Levitation Force Between a Permanent Magnet and a Superconductor

NASA Astrophysics Data System (ADS)

Zhang, Xing-Yi; Zhou, You-He; Zhou, Jun

This paper describes the experimental results of the levitation force of single-grained YBaCuO bulk superconductors preparing by the top-seeded melt-growth method with different waiting time tw below an NdFeB permanent magnet. It was found that waiting time has large effects on the zero-field-cooled (ZFC) and field-cooled (FC) levitation force, and the levitation force shows aging characteristics at the liquid nitrogen temperature.

Effect of the External Lubrication Method for a Rotary Tablet Press on the Adhesion of the Film Coating Layer.

PubMed

Kondo, Hisami; Toyota, Hiroyasu; Kamiya, Takayuki; Yamashita, Kazunari; Hakomori, Tadashi; Imoto, Junko; Kimura, Shin-Ichiro; Iwao, Yasunori; Itai, Shigeru

2017-01-01

External lubrication is a useful method which reduces the adhesion of powder to punches and dies by spraying lubricants during the tableting process. However, no information is available on whether the tablets prepared using an external lubrication system can be applicable for a film coating process. In this study, we evaluated the adhesion force of the film coating layer to the surface of tablets prepared using an external lubrication method, compared with those prepared using internal lubrication method. We also evaluated wettability, roughness and lubricant distribution state on the tablet surface before film coating, and investigated the relationship between peeling of the film coating layer and these tablet surface properties. Increasing lubrication through the external lubrication method decreased wettability of the tablet surface. However, no change was observed in the adhesion force of the film coating layer. On the other hand, increasing lubrication through the internal lubrication method, decreased both wettability of the tablet surface and the adhesion force of the film coating layer. The magnesium stearate distribution state on the tablet surface was assessed using an X-ray fluorescent analyzer and lubricant agglomerates were observed in the case of the internal lubrication method. However, the lubricant was uniformly dispersed in the external lubrication samples. These results indicate that the distribution state of the lubricant affects the adhesion force of the film coating layer, and external lubrication maintained sufficient lubricity and adhesion force of the film coating layer with a small amount of lubricant.

Variability of human corticospinal excitability tracks the state of action preparation.

PubMed

Klein-Flügge, Miriam C; Nobbs, David; Pitcher, Julia B; Bestmann, Sven

2013-03-27

Task-evoked trial-by-trial variability is a ubiquitous property of neural responses, yet its functional role remains largely unclear. Recent work in nonhuman primates shows that the temporal structure of neural variability in several brain regions is task-related. For example, trial-by-trial variability in premotor cortex tracks motor preparation with increasingly consistent firing rates and thus a decline in variability before movement onset. However, whether noninvasive measures of the variability of population activity available from humans can similarly track the preparation of actions remains unknown. We tested this by using single-pulse transcranial magnetic stimulation (TMS) over primary motor cortex (M1) to measure corticospinal excitability (CSE) at different times during action preparation. First, we established the basic properties of intrinsic CSE variability at rest. Then, during the task, responses (left or right button presses) were either directly instructed (forced choice) or resulted from a value decision (choice). Before movement onset, we observed a temporally specific task-related decline in CSE variability contralateral to the responding hand. This decline was stronger in fast-response compared with slow-response trials, consistent with data in nonhuman primates. For the nonresponding hand, CSE variability also decreased, but only in choice trials, and earlier compared with the responding hand, possibly reflecting choice-specific suppression of unselected actions. These findings suggest that human CSE variability measured by TMS over M1 tracks the state of motor preparation, and may reflect the optimization of preparatory population activity. This provides novel avenues in humans to assess the dynamics of action preparation but also more complex processes, such as choice-to-action transformations.

Pharmacological activity of three commercial Hypericum perforatum preparations in mice.

PubMed

Jean, D; Pouligon, M; Henriot, A C

2006-08-01

St John's Wort (Hypericum perforatum) is the main herbal species used to treat depression. The products available on the pharmaceutical and dietary supplement markets are obtained by a variety of preparation processes and their pharmacological effects may differ significantly. The purpose of this study therefore was to investigate the effect of different St John's Wort commercial preparations available on the French market. Only one preparation gave significant results in the forced swimming test.

Osteo-odonto-keratoprosthesis (OOKP) and the testing of three different adhesives for bonding bovine teeth with optical poly-(methyl methacrylate) (PMMA) cylinder.

PubMed

Weisshuhn, K; Berg, I; Tinner, D; Kunz, C; Bornstein, M M; Steineck, M; Hille, K; Goldblum, D

2014-07-01

Preparation of the lamina during osteo-odonto-keratoprosthesis (OOKP) design is complex, and its longevity and watertightness important. To date, only acrylic bone cements have been used for bonding the optical cylinder to the tooth dentine. Our aim was to evaluate different dental adhesives for OOKP preparation. Specimens of bovine teeth were produced by preparing 1.5-mm thick dentine slices with holes having a diameter of 3.5 mm. Each group (n=10 per group) was luted with either classic poly-(methyl methacrylate) (PMMA) bone cement, universal resin cement or glass ionomer cement. All specimens underwent force measurement using a uniaxial traction machine. The highest mean force required to break the bond was measured for PMMA bone cement (128.2 N) followed by universal resin cement (127.9 N), with no statistically significant difference. Glass ionomer cement showed significantly lower force resistance (78.1 N). Excellent bonding strength combined with easy application was found for universal resin cement, and thus, it is a potential alternative to acrylic bone cement in OOKP preparation. Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://group.bmj.com/group/rights-licensing/permissions.

Meltwater Evolution during Defrosting on Superhydrophobic Surfaces.

PubMed

Chu, Fuqiang; Wu, Xiaomin; Wang, Lingli

2018-01-10

Defrosting is essential for removing frost from engineering surfaces, but some fundamental issues are still unclear, especially for defrosting on superhydrophobic surfaces. Here, defrosting experiments on prepared superhydrophobic surfaces were conducted along with the investigation on meltwater evolution characteristics. According to the experiments, the typical meltwater evolution process on superhydrophobic surfaces can be divided into two stages: dewetting by edge curling and dewetting by shrinkage. The edge curling of a meltwater film is a distinct phenomenon and has been first reported in this work. Profiting from the ultralow adhesion of the superhydrophobic surface, edge curling is mainly attributed to two unbalanced forces (one at the interface between the ice slurry layer and pure water layer and the other in the triple phase line area) acting on the layered meltwater film. During the multi-meltwater evolution process, the nonbreaking of chained droplets on superhydrophobic surfaces is also an interesting phenomenon, which is controlled by the interaction between the surface tension and the retentive force because of contact angle hysteresis. An approximate criterion was then developed to explain and determine the status of chained droplets, and experimental data from various surfaces have validated the effectiveness of this criterion. This work may deepen the understanding of defrosting on superhydrophobic surfaces and promote antifrosting/icing applications in engineering.

Preparing Al-Mg Substrate for Thermal Spraying: Evaluation of Surface State After Different Pretreatments

NASA Astrophysics Data System (ADS)

Lukauskaitė, R.; Valiulis, A. V.; Černašėjus, O.; Škamat, J.; Rębiś, J. A.

2016-08-01

The article deals with the pretreatment technique for preparing the surface of aluminum alloy EN AW 5754 before thermal spray. The surface after different pretreatments, including degreasing with acetone, chemical etching with acidic and alkali solutions, grit-blasting, cathodic cleaning, and some combinations of these techniques, has been studied. The investigation of pre-treated surfaces covered the topographical study (using scanning electron microscopy, atomic force microscopy, and 3D profilometry), the chemical analysis by x-ray photoelectron spectroscopy, the evaluation of surface wettability (sessile drop method), and the assessment of surface free energy. Compared with all the techniques used in present work, the cathodic cleaning and its combination with grit-blasting provide the most preferable chemistry of the surface. Due to the absence of hydroxides at the surface and, possible, due to the diffusion of magnesium to the surface of substrate, the surface wettability and the surface free energy have been significantly improved. No direct correlation between the surface topography and the surface wettability has been established.

AIM being prepared for integrated testing and flight simulation

NASA Image and Video Library

2007-03-24

In Building 1555 on North Vandenberg Air Force Base in California, technicians work on the separation system to be mated to the AIM spacecraft. AIM, which stands for Aeronomy of Ice in the Mesosphere, is being prepared for integrated testing and a flight simulation. The AIM spacecraft will fly three instruments designed to study polar mesospheric clouds located at the edge of space, 50 miles above the Earth's surface in the coldest part of the planet's atmosphere. The mission's primary goal is to explain why these clouds form and what has caused them to become brighter and more numerous and appear at lower latitudes in recent years. AIM's results will provide the basis for the study of long-term variability in the mesospheric climate and its relationship to global climate change. AIM is scheduled to be mated to its launch vehicle, Orbital Sciences' Pegasus XL, during the second week of April, after which final inspections will be conducted. Launch is scheduled for April 25.

AIM being prepared for integrated testing and flight simulation

NASA Image and Video Library

2007-03-24

In Building 1555 on North Vandenberg Air Force Base in California, technicians work on the separation system to be mated to the AIM spacecraft, hovering above it. AIM, which stands for Aeronomy of Ice in the Mesosphere, is being prepared for integrated testing and a flight simulation. The AIM spacecraft will fly three instruments designed to study polar mesospheric clouds located at the edge of space, 50 miles above the Earth's surface in the coldest part of the planet's atmosphere. The mission's primary goal is to explain why these clouds form and what has caused them to become brighter and more numerous and appear at lower latitudes in recent years. AIM's results will provide the basis for the study of long-term variability in the mesospheric climate and its relationship to global climate change. AIM is scheduled to be mated to its launch vehicle, Orbital Sciences' Pegasus XL, during the second week of April, after which final inspections will be conducted. Launch is scheduled for April 25.

Reply to "Comment on `Penetration of Action Potentials During Collision in the Median and Lateral Giant Axons of Invertebrates"'

NASA Astrophysics Data System (ADS)

Wang, Tian; Gonzalez-Perez, Alfredo; Budvytyte, Rima; Jackson, Andrew D.; Heimburg, Thomas

2017-04-01

Berg et al. did not reproduce our results but worked on different preparations and, in one central experiment, used a significantly different electrode configuration. To clarify the situation, we have repeated their experiment on the walking leg of a lobster using an apparatus that can produce both electrode configurations. With the configuration used by Berg et al., the signal of the nerve pulse disappears when forced to pass through the region strongly perturbed by the second stimulus. In our original collision setup, pulses do not travel through perturbed regions, and pulses pass through each other without annihilation as previously reported. These results demonstrate that we handle the preparations correctly. Furthermore, they call for a reinterpretation of the so-called collision block experiment performed by Berg et al. Most likely, their results merely indicate inhibition of the nerve pulse by a strong stimulus and not annihilation upon collision as claimed.

Docetaxel-loaded thermosensitive liquid suppository: optimization of rheological properties.

PubMed

Yeo, Woo Hyun; Ramasamy, Thiruganesh; Kim, Dong-Wuk; Cho, Hyuk Jun; Kim, Yong-Il; Cho, Kwan Hyung; Yong, Chul Soon; Kim, Jong Oh; Choi, Han-Gon

2013-12-01

The main purpose of this work was to optimize the rheological properties of docetaxel (DCT)-loaded thermosensitive liquid suppositories for rectal administration. DCT-loaded liquid suppositories were prepared by a cold method and characterized in terms of physicochemical and viscoelastic properties. Major formulation parameters including poloxamer (P407) and Tween 80 were optimized to adjust the thermogelling and mucoadhesive properties for rectal administration. Notably, the gel strength and mucoadhesive force significantly increased with the increase in these variables. Furthermore, DCT incorporation did not alter the viscoelastic behavior, and the mean particle size of nanomicelles in it was approximately 16 nm with a distinct spherical shape. The formulation existed as liquid at room temperature and transformed into gel at physiological temperature through the reverse gelation phenomenon. Thus, DCT-loaded thermosensitive liquid suppositories [DCT/P407/P188/Tween 80 (0.25/11/15/10 %)] with optimal gel properties were easy to prepare and administer rectally, and might enable the gel to stay in the rectum without getting out from rectum.

Agricultural Work Force Households: How Much Do They Depend on Farming? Background for Agricultural Policy. Agriculture Information Bulletin Number 547.

ERIC Educational Resources Information Center

Cox, E. Jane; Oliveira, Victor J.

According to data from the 1985 Agricultural Work Force Survey, over 13.5 million of the 17.6 million agricultural work force household members (77 percent) lived in households headed by a farm worker. Some farm workers worked on the farm as their primary job, whereas others primarily worked off the farm. Farm work was an occasional form of…

40 CFR 35.936-14 - Force account work.

Code of Federal Regulations, 2011 CFR

2011-07-01

... 40 Protection of Environment 1 2011-07-01 2011-07-01 false Force account work. 35.936-14 Section... ASSISTANCE STATE AND LOCAL ASSISTANCE Grants for Construction of Treatment Works-Clean Water Act § 35.936-14 Force account work. (a) A grantee must secure the project officer's prior written approval for use of...

Diversity in the Work Force. The Highlight Zone: Research @ Work No. 4.

ERIC Educational Resources Information Center

Wentling, Rose Mary

A literature review was conducted to identify critical work force diversity issues in today's changing workplace and identify ways organizations and career and technical education (CTE) practitioners can increase work force diversity. A broad, all-inclusive definition of diversity was developed that focuses on how diversity affects individuals and…

Integrated Work Management: Preparer, Course 31883

DOE Office of Scientific and Technical Information (OSTI.GOV)

Simpson, Lewis Edward

The preparer (also called the “planner”) plays a key role in the integrated work management (IWM) process at Los Alamos National Laboratory (LANL). This course, Integrated Work Management: Preparer (COURSE 31883), describes the IWM roles and responsibilities of the preparer. This course also discusses IWM requirements that must be met by the preparer.

Benefit Analysis Report, United States Air Force Technical Order Management Systems (AFTOMS)

DOT National Transportation Integrated Search

1989-08-01

This report prepared by the Transportation Systems Center (TSC) concludes an analysis of the Technical Order (TO) costs and benefits, which was originally undertaken as part of the US Air Force Computer-aided Acquisition and Logistics Support (CALS) ...

Competency-Based Medical Education in the Internal Medicine Clerkship: A Report From the Alliance for Academic Internal Medicine Undergraduate Medical Education Task Force.

PubMed

Fazio, Sara B; Ledford, Cynthia H; Aronowitz, Paul B; Chheda, Shobhina G; Choe, John H; Call, Stephanie A; Gitlin, Scott D; Muntz, Marty; Nixon, L James; Pereira, Anne G; Ragsdale, John W; Stewart, Emily A; Hauer, Karen E

2018-03-01

As medical educators continue to redefine learning and assessment across the continuum, implementation of competency-based medical education in the undergraduate setting has become a focus of many medical schools. While standards of competency have been defined for the graduating student, there is no uniform approach for defining competency expectations for students during their core clerkship year. The authors describe the process by which an Alliance for Academic Internal Medicine task force developed a paradigm for competency-based assessment of students during their inpatient internal medicine (IM) clerkship. Building on work at the resident and fellowship levels, the task force focused on the development of key learning outcomes as defined by entrustable professional activities (EPAs) that were specific to educational experiences on the IM clerkship, as well as identification of high-priority assessment domains. The work was informed by a national survey of clerkship directors.Six key EPAs emerged: generating a differential diagnosis, obtaining a complete and accurate history and physical exam, obtaining focused histories and clinically relevant physical exams, preparing an oral presentation, interpreting the results of basic diagnostic studies, and providing well-organized clinical documentation. A model for assessment was proposed, with descriptors aligned to the scale of supervision and mapped to Accreditation Council for Graduate Medical Education domains of competence. The proposed paradigm offers a standardized template that may be used across IM clerkships, and which would effectively bridge competency evaluation in the clerkship to fourth-year assessment as well as eventual postgraduate training.

Gauge invariant perturbations of the Schwarzschild spacetime

NASA Astrophysics Data System (ADS)

Thompson, Jonathan E.; Chen, Hector; Whiting, Bernard F.

2017-09-01

Beginning with the pioneering work of Regge and Wheeler (1957 Phys. Rev. 108 1063), there have been many studies of perturbations away from the Schwarzschild spacetime background. In particular several authors Moncrief (1974 Ann. Phys. 88 323), Sachs (1964 Relativity, Groups and Topology (New York: Gordon and Breach)) and Brizuela et al (2007 Phys. Rev. D 76 024004) have investigated gauge invariant quantities of the Regge-Wheeler (RW) formalism. Steven Detweiler also investigated perturbations of Schwarzschild in his own formalism, introducing his own gauge choice which he denoted the ‘easy (EZ) gauge’, and which he was in the process of adapting for use in the second-order self-force problem. We present here a compilation of some of his working results, arising from notes for which there seems to have been no manuscript in preparation. In particular, we outline Detweiler’s formalism, list the gauge invariant quantities he used, and explain the process by which he found them.

How Did Climate and Humans Respond to Past Volcanic Eruptions?

NASA Technical Reports Server (NTRS)

Toohey, Matthew; Ludlow, Francis; Legrande, Allegra N.

2016-01-01

To predict and prepare for future climate change, scientists are striving to understand how global-scale climatic change manifests itself on regional scales and also how societies adapt or don't to sometimes subtle and complex climatic changes. In this regard, the strongest volcanic eruptions of the past are powerful test cases, showcasing how the broad climate system responds to sudden changes in radiative forcing and how societies have responded to the resulting climatic shocks. These issues were at the heart of the inaugural workshop of the Volcanic Impacts on Climate and Society (VICS) Working Group, convened in June 2016 at the Lamont-Doherty Earth Observatory of Columbia University in Palisades, N.Y. The 3-day meeting gathered approximately 50 researchers, who presented work intertwining the history of volcanic eruptions and the physical processes that connect eruptions with human and natural systems on a global scale.

Comparative safety and efficacy of subcutaneous and intradermal administration of inactivated Japanese encephalitis vaccine during predeployment preparations in the Australian Defence Force.

PubMed

Kitchener, Scott; Nasveld, Peter; Brennan, Len; Ward, David

2006-12-01

Japanese encephalitis is a viral disease emerging in areas of influence for the Australian Defence Force immediately north of the continent, including the Torres Strait border of Australia and Papua, New Guinea. Only the mouse brain-derived, inactivated, Nakayama strain vaccine is commercially available to the Australian Defence Force. This vaccine has a high cost and significant adverse event profile, requiring restricted duties after administration. To address these issues, intradermal vaccination (either single intradermal administration or two intradermal injections at two separate sites) was assessed, compared with the conventional subcutaneous vaccination method, in a randomized controlled trial among soldiers preparing for deployment. Dual intradermal vaccination (0.1 mL at two sites) was found to have a slightly more favorable adverse event profile while maintaining comparable serological efficacy and reduced cost. An expansion of the concept and a test of logistics were conducted by vaccinating a battalion formation during predeployment medical preparations. The method of vaccination was well accepted and retained comparable immunogenicity.

Evaluation of knee joint forces during kneeling work with different kneepads.

PubMed

Xu, Hang; Jampala, Sree; Bloswick, Donald; Zhao, Jie; Merryweather, Andrew

2017-01-01

The main purpose of this study is to determine knee joint forces resulting from kneeling work with and without kneepads to quantify how different kneepads redistribute force. Eleven healthy males simulated a tile setting task to different locations during six kneepad states (five different kneepad types and without kneepad). Peak and average forces on the anatomical landmarks of both knees were obtained by custom force sensors. The results revealed that kneepad design can significantly modify the forces on the knee joint through redistribution. The Professional Gel design was preferred among the five tested kneepads which was confirmed with both force measurements and participants' responses. The extreme reaching locations induced significantly higher joint forces on left knee or right knee depending on task. The conclusion of this study is that a properly selected kneepad for specific tasks and a more neutral working posture can modify the force distribution on the knees and likely decrease the risk of knee disorders from kneeling work. Copyright © 2016 Elsevier Ltd. All rights reserved.

New understanding of microstructure formation of the rubber phase in thermoplastic vulcanizates (TPV).

PubMed

Wu, Hanguang; Tian, Ming; Zhang, Liqun; Tian, Hongchi; Wu, Youping; Ning, Nanying

2014-03-21

The breakup of the rubber phase in an ethylene-propylene-diene monomer (EPDM)/polypropylene (PP) blend at the early stage of dynamic vulcanization is similar to that in an unvulcanized EPDM/PP blend because of the low crosslink density of the EPDM phase. In this work, the minimum size of the rubber phase in the unvulcanized EPDM/PP blend was first calculated by using the critical breakup law of viscoelastic droplets in a matrix. The calculated results showed that the minimum size of the rubber phase in the unvulcanized blend was in the nanometer scale (25-46 nm), not the micrometer scale as reported in many works. Meanwhile, the actual size of the rubber phase in the thermoplastic vulcanizate (TPV) at both the early stage and the final stage of dynamic vulcanization was observed by using peak force tapping atomic force microscopy (PF-AFM). The results indicated that the EPDM phase indeed broke up into nanoparticles at the early stage of dynamic vulcanization, in good agreement with the calculated results. More interestingly, we first revealed that the micrometer-sized rubber particles commonly observed in TPV were actually the agglomerates of rubber nanoparticles with diameters between 40 and 60 nm. The mechanism for the formation of rubber nanoparticles and their agglomerates during dynamic vulcanization was then discussed. Our work provides guidance to control the microstructure of the rubber phase in TPV to prepare high performance TPV products for a wide range of applications in the automobile and electronic industries.

Showing Food Foams Properties with Common Dairy Foods

NASA Astrophysics Data System (ADS)

Bravo-Diaz, Carlos; Gonzalez-Romero, Elisa

1997-09-01

Most writers on food either ignore scientific principles that underlie cooking or disparage the value of such information on the grounds that can not be easily reduced to the test tube. However, people who have not yet logged years preparing food might require some explanation about what is going on or just simple may be curious about what foods are and how cooking works. In this work we show some easy to carry, inexpensive and safe experiments developed using familiar kitchen materials related with egg foams. Eggs's properties are not only limited to prepare excellent and delicious emulsions like mayonnaise but also makes excellent foams, increasing their volume significantly in two primary ways: the first one may be attributed to the albumen (a major component of egg white) because it is a thick viscous solution and it drains more slowly out of bubble walls than does a thin liquid and the second one is because egg white introduces a kind of reinforcement into the bubble walls. As the egg white is beaten and air bubbles are incorporated into it, the proteins in the bubble wall are subjected to an imbalance of forces due to the air-liquid interface which makes them to unfold and bond each other forming a delicate but definitely reinforcing network.

Electronic health records: critical success factors in implementation.

PubMed

Safdari, Reza; Ghazisaeidi, Marjan; Jebraeily, Mohamad

2015-04-01

EHR implementation results in the improved quality of care, customer-orientation and timely access to complete information. Despite the potential benefits of EHR, its implementation is a difficult and complex task whose success depends on many factors. The purpose of this research is indeed to identify the key success factors of EHR. This is a cross-sectional survey conducted with participation of 340 work forces from different types of job from Hospitals of TUMS in 2014. Data were collected using a self-structured questionnaire which was estimated as both reliable and valid. The data were analyzed by SPSS software descriptive statistics and analytical statistics. 58.2% of respondents were female and their mean age and work experience were 37.7 and 11.2 years, respectively and most respondents (52.5%) was bachelor. In terms of job, the maximum rate was related to nursing (33 %) and physician (21 %). the main category of critical success factors in Implementation EHRs, the highest rate related to Project Management (4.62) and lowest related to Organizational factors (3.98). success in implementation EHRs requirement more centralization to project management and human factors. Therefore must be Creating to EHR roadmap implementation, establishment teamwork to participation of end-users and select prepare leadership, users obtains sufficient training to use of system and also prepare support from maintain and promotion system.

The characteristics and mechanisms of Au nanoparticles processed by functional centrifugal procedures

NASA Astrophysics Data System (ADS)

Shiau, Bo-Wen; Lin, Chien-Hung; Liao, Ying-Yen; Lee, Ya-Rong; Liu, Shih-Hao; Ding, Wei-Cheng; Lee, Jia-Ren

2018-05-01

In this work, the optical properties of Au nanoparticles processed by centrifugation techniques are studied. Most of the literature related to the control of nanoparticle size has focused on different preparation parameters; however, the wide size distribution is commonly an issue for follow-up investigations and further applications. Therefore, we developed a method in which specific-diameter particles can be effectively separated using different centrifugal procedures. The initial nanoparticle solution with a primary absorption peak at 534 nm is separated into discernible resonance wavelengths from 526 to 537 nm, with corresponding particle sizes from 30 to 55 nm. For the atomic force microscopy analysis of nanoparticle size, a dry cetyltrimethylammonium bromide (CTAB) film often covers the particles and interferes with the measurement; thus, CTAB has to be removed. However, if too much CTAB is removed, the surface of the Au nanoparticle becomes unstable, and the particles aggregate. Accordingly, we used UV spectroscopy to monitor the CTAB content; properly adjust the rotational speed and the number of centrifugation stages; and design a method that can effectively remove impurities, avoid clustering, and enable particle size measurement. The usually complicated procedures and high cost of preparation of specific-size Au nanoparticles are greatly simplified and reduced by the convenient extraction process proposed in this work, which would benefit related research and applications.

Effects of hexagonal boron nitride on dry compression mixture of Avicel DG and Starch 1500.

PubMed

Uğurlu, Timuçin; Halaçoğlu, Mekin Doğa

2016-01-01

The objective of this study was to investigate the lubrication properties of hexagonal boron nitride (HBN) on a (1:1) binary mixture of Avicel DG and Starch 1500 after using the dry granulation-slugging method and compare it with conventional lubricants, such as magnesium stearate (MGST), glyceryl behenate (COMP) and stearic acid (STAC). MGST is one of the most commonly used lubricants in the pharmaceutical industry. However, it has several adverse effects on tablet properties. In our current study, we employed various methods to eradicate the work hardening phenomenon in dry granulation, and used HBN as a new lubricant to overcome the adverse effects of other lubricants on tablet properties. HBN was found to be as effective as MGST and did not show any significant adverse effects on the crushing strength or work hardening. From the scanning electron microscope (SEM) images, it was concluded that HBN distributed better than MGST. As well as showing better distribution, HBN's effect on disintegration was the least pronounced. Semi-quantitative weight percent distribution of B and N elements in the tablets was obtained using EDS (energy dispersive spectroscopy). Based on atomic force microscope (AFM) surface roughness images, formulations prepared with 1% HBN showed better plastic character than those prepared with MGST.

Nutritional Assessment of the Ft. Riley Non-Commissioned Officer Academy Dining Facility

DTIC Science & Technology

1987-05-01

Initiatives, Revised Armed Forces Recipe Service, Cholesterol Consumption, Sodium, Fat Reduction, Visual Portion Estimation. Garrison Dining Facility...moderate cholesterol intakes vii i Ue should be evaluated. Revised Armed Forces Recipe Service recipes with reduced salt content should be tested and...preparation methods used and recipes followed in the NCO Academy Dining Facility. Standard recipes from the Armed Forces Recipe Service Tri-Service

14. Photocopy of photograph (original photograph in possession of 30th ...

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

14. Photocopy of photograph (original photograph in possession of 30th Audiovisual Squadron, Vandenberg Air Force Base, California). Photography by United States Air Force, date unknown. ATLAS VEHICLE BEING PREPARED FOR LAUNCH FROM SLC-3E. NOTE EXTERNAL SHEATHING AND CUPOLA ON MOBILE SERVICE TOWER. - Vandenberg Air Force Base, Space Launch Complex 3, Napa & Alden Roads, Lompoc, Santa Barbara County, CA

Integrated Training System for Air Force On-the-Job Training: Specification Development. Final Technical Paper.

ERIC Educational Resources Information Center

Carson, Stuart B.; And Others.

The Air Force conducted this study for two purposes: (1) to define the system of Air Force On-the-Job Training (OJT); and (2) to prepare a set of functional specifications for an integrated, base-level OJT evaluation and management system with linkages to the Major Commands and Air Staff. The study was conducted in four phases. During the first…

Preparing for the Unthinkable: DOD Support to Foreign Consequence Management

DTIC Science & Technology

2010-05-03

Nuclear Disaster ” (research paper, Maxwell Air Force Base, AL: Air University, 2001), 23. 17 Department of Defense Consequence Management...States Government Response to an Overseas Chemical, Biological, Radiological, or Nuclear Disaster ” (research paper, Maxwell Air Force Base, AL: Air...Government Response to an Overseas Chemical, Biological, Radiological, or Nuclear Disaster .” Research paper, Maxwell Air Force Base, AL: Air University

Teaching Spanish to Latin American Area Specialists at the Air Force Academy: A Focus on Language and Culture.

ERIC Educational Resources Information Center

Vela, Arnoldo

The language program at the United State Air Force Academy is described with emphasis on its upper track courses that are designed to prepare area specialists to interact with their foreign counterparts. Air Force officers assigned to Latin America, for example, may serve as experts in political-military affairs, foreign military sales, or as…

The Cytoskeleton and Force Response Mechanisms

NASA Technical Reports Server (NTRS)

Allen, Philip Goodwin

2003-01-01

The long term aim of this project was to define the mechanisms by which cells sense and respond to the physical forces experienced at 1g and missing in microgravity. Identification and characterization of the elements of the cells force response mechanism could provide pathways and molecules to serve as targets for pharmacological intervention to mitigate the pathologic effects of microgravity. Mechanical forces experienced by the organism can be transmitted to cells through molecules that allow cells to bind to the extracellular matrix and through other types of molecules which bind cells to each other. These molecules are coupled in large complexes of proteins to structural elements such as the actin cytoskeleton that give the cell the ability to sense, resist and respond to force. Application of small forces to tissue culture cells causes local elevation of intracellular calcium through stretch activated ion channels, increased tyrosine phosphorylation and a restructuring of the actin cytoskeleton. Using collagen coated iron oxide beads and strong magnets, we can apply different levels of force to cells in culture. We have found that force application causes the cells to polymerize actin at the site of mechanical deformation and unexpectedly, to depolymerize actin across the rest of the cell. Observations of GFP- actin expressing cells demonstrate that actin accumulates at the site of deformation within the first five minutes of force application and is maintained for many tens of minutes after force is removed. Consistent with the reinforcement of the cytoskeletal structures underlying the integrin-bead interaction, force also alters the motion of bound magnetic beads. This effect is seen following the removal of the magnetic field, and is only partially ablated by actin disruption with cytochalsin B. While actin is polymerizing locally at the site of force application, force also stimulates a global reduction in actin filament content within the cells. We have examined the roles of several actin filament disassembly factors in the global reduction of cellular actin filaments. The calcium regulated actin filament severing protein gelsolin is not necessary for the increased actin turnover, as cells derived from gelsolin null and wildtype mice still show a reduction in total actin filament content. Instead, our work suggests that the actin binding protein cofilin may be important for these changes in actin dynamics. Cofilin binds to and enhances the disassembly of actin filaments. Using immunological methods, we observe transient changes in the phosphorylation state of cofilin upon force application that suggests that cofilin may mediate actin filament turnover. Early after force application, cofilin is transiently dephosphorylated, activating its actin disassembly activity. Subsequently, we find a hyper-phosphorylation of cofilin, rendering it inactive. This reduction in cofilin activity may explain the stability of the force induced actin structuttes. In testing this hypothesis, we aimed to generate cells that express the constituitively active kinase (LIM-kinase) that phosphorylates cofilin. lnidial attempts in the cell lines used for the our previous studies proved unsuccessful. While we prepare this work for pubication, we are continuing to study other cell lines and tissue sources to determine whether they show a reduction in F-actin content after force application.

United States Air Force 611th Air Support Group/Civil Engineering Squadron Elmendorf AFB, Alaska. Remedial investigation and feasibility study. Bullen Point Radar Installation, Alaska. Final report

DOE Office of Scientific and Technical Information (OSTI.GOV)

Karmi, S.

1996-03-18

The United States Air Force (Air Force) has prepared this Remedial investigation/Feasibility Study (RI/FS) report as part of the Installation Restoration Program (IRP) to present results of RI/FS activities at five sites at the Bullen Point radar installation. The IRP provides for investigating, quantifying, and remediating environmental contamination from past waste management activities at Air Force installations throughout the United States.

Parenting Attitudes of Expectant Couples Associated with the Air Force

DTIC Science & Technology

1992-05-01

child abuse . These factors are also associated with Air Force life. These inherent risk factors when coupled with negative or abusive parenting attitudes could lead to child abuse . Little attention has been given to parenting attitudes in the Air Force population. Data were collected from a convenience sample of 67 participants in either the new OB orientation classes or the prepared child birth classes at two Air Force bases in the Southwest. The instrument was the Adult-Adolescent Parenting Inventory

The Work, the Workplace, and the Work Force of Tomorrow.

ERIC Educational Resources Information Center

Allen, Claudia

1995-01-01

Ann McLaughlin, a former secretary of labor, discusses her views on the future of the workplace. She feels that to solve the impending problem of educational deficits among the work force, employers will begin their own educational programs, improving both employee loyalty and work force mobility. Includes predictions for future growth fields.…

Modulation of post‐movement beta rebound by contraction force and rate of force development

PubMed Central

Fry, Adam; Mullinger, Karen J.; O'Neill, George C.; Barratt, Eleanor L.; Morris, Peter G.; Bauer, Markus; Folland, Jonathan P.

2016-01-01

Abstract Movement induced modulation of the beta rhythm is one of the most robust neural oscillatory phenomena in the brain. In the preparation and execution phases of movement, a loss in beta amplitude is observed [movement related beta decrease (MRBD)]. This is followed by a rebound above baseline on movement cessation [post movement beta rebound (PMBR)]. These effects have been measured widely, and recent work suggests that they may have significant importance. Specifically, they have potential to form the basis of biomarkers for disease, and have been used in neuroscience applications ranging from brain computer interfaces to markers of neural plasticity. However, despite the robust nature of both MRBD and PMBR, the phenomena themselves are poorly understood. In this study, we characterise MRBD and PMBR during a carefully controlled isometric wrist flexion paradigm, isolating two fundamental movement parameters; force output, and the rate of force development (RFD). Our results show that neither altered force output nor RFD has a significant effect on MRBD. In contrast, PMBR was altered by both parameters. Higher force output results in greater PMBR amplitude, and greater RFD results in a PMBR which is higher in amplitude and shorter in duration. These findings demonstrate that careful control of movement parameters can systematically change PMBR. Further, for temporally protracted movements, the PMBR can be over 7 s in duration. This means accurate control of movement and judicious selection of paradigm parameters are critical in future clinical and basic neuroscientific studies of sensorimotor beta oscillations. Hum Brain Mapp 37:2493–2511, 2016. © 2016 The Authors Human Brain Mapping Published by Wiley Periodicals, Inc PMID:27061243

Method of preparing a two-way shape memory alloy

DOEpatents

Johnson, Alfred D.

1984-01-01

A two-way shape memory alloy, a method of training a shape memory alloy, and a heat engine employing the two-way shape memory alloy to do external work during both heating and cooling phases. The alloy is heated under a first training stress to a temperature which is above the upper operating temperature of the alloy, then cooled to a cold temperature below the zero-force transition temperature of the alloy, then deformed while applying a second training stress which is greater in magnitude than the stress at which the alloy is to be operated, then heated back to the hot temperature, changing from the second training stress back to the first training stress.

Alliance for NanoHealth (ANH) Training Program for the development of future generations of interdisciplinary scientists and collaborative research focused upon the advancement of nanomedicine

DOE Office of Scientific and Technical Information (OSTI.GOV)

Gorenstein, David

The objectives of this program are to promote the mission of the Department of Energy (DOE) Science, Technology, Engineering, Math (STEM) Program by recruiting students to science and engineering disciplines with the intent of mentoring and supporting the next generation of scientists; to foster interdisciplinary and collaborative research under the sponsorship of ANH for the discovery and design of nano-based materials and devices with novel structures, functions, and properties; and to prepare a diverse work force of scientists, engineers, and clinicians by utilizing the unique intellectual and physical resources to develop novel nanotechnology paradigms for clinical application.

Teaching Public Health Through a Pedagogy of Collegiality

PubMed Central

Chávez, Vivian; Turalba, Ruby-Asuncion N.; Malik, Savita

2006-01-01

Curriculum development in masters of public health programs that effectively meets the complex challenges of the 21st century is an important part of public health education and requires purposeful thinking. Current approaches to training the public health work-force do not adequately prepare professionals to be culturally competent in addressing health disparities. Principles of community-based participatory research highlight the importance of building relationships of mutual accountability and emphasize collegial teaching. We present background and theoretical foundations for a pedagogy of collegiality and describe specific teaching methods, classroom activities, and key assignments organized around 4 essential features: principles of community organizing, building community and valuing diversity, engaging the senses, and writing across the curriculum. PMID:16735640

Teaching public health through a pedagogy of collegiality.

PubMed

Chávez, Vivian; Turalba, Ruby-Asuncion N; Malik, Savita

2006-07-01

Curriculum development in masters of public health programs that effectively meets the complex challenges of the 21st century is an important part of public health education and requires purposeful thinking. Current approaches to training the public health work-force do not adequately prepare professionals to be culturally competent in addressing health disparities. Principles of community-based participatory research highlight the importance of building relationships of mutual accountability and emphasize collegial teaching. We present background and theoretical foundations for a pedagogy of collegiality and describe specific teaching methods, classroom activities, and key assignments organized around 4 essential features: principles of community organizing, building community and valuing diversity, engaging the senses, and writing across the curriculum.

EM-1 Booster Prep, Left Aft Skirt Work-In-Progress

NASA Image and Video Library

2016-10-30

Inside the Booster Fabrication Facility at NASA's Kennedy Space Center in Florida, the left hand aft skirt for the agency's Space Launch System (SLS) rocket is ready for the assembly process. From left, are Chad Goetz, quality technician with Orbital ATK, and Robbie Blaue, quality assurance specialist with the Defense Contract Management Agency. The aft skirt was refurbished and painted in support facilities at the Hangar AF facility at Cape Canaveral Air Force Station in Florida. The space shuttle-era aft skirt will be used on the left hand booster of the SLS for Exploration Mission 1 (EM-1). NASA is preparing for EM-1, deep space missions, and the Journey to Mars.

Pegasus ICON Spacecraft Arrival Activites

NASA Image and Video Library

2018-05-01

Technicians prepare NASA's Ionospheric Connection Explorer (ICON) for lift and transfer to a work stand on May 1, 2018, inside Building 1555 at Vandenberg Air Force Base in California. The explorer will launch on June 15, 2018, from Kwajalein Atoll in the Marshall Islands (June 14 in the continental United States) on Orbital ATK's Pegasus XL rocket, which is attached to the company's L-1011 Stargazer aircraft. ICON will study the frontier of space - the dynamic zone high in Earth's atmosphere where terrestrial weather from below meets space weather above. The explorer will help determine the physics of Earth's space environment and pave the way for mitigating its effects on our technology, communications systems and society.

Nano-sized graphene flakes: insights from experimental synthesis and first principles calculations.

PubMed

Lin, Pin-Chun; Chen, Yi-Rui; Hsu, Kuei-Ting; Lin, Tzu-Neng; Tung, Kuo-Lun; Shen, Ji-Lin; Liu, Wei-Ren

2017-03-01

In this study, we proposed a cost-effective method for preparing graphene nano-flakes (GNFs) derived from carbon nanotubes (CNTs) via three steps (pressing, homogenization and sonication exfoliation processes). Scanning electron microscopy (SEM), transmission electron microscopy (TEM), atomic force microscopy (AFM), laser scattering, as well as ultraviolet-visible and photoluminescence (PL) measurements were carried out. The results indicated that the size of as-synthesized GNFs was approximately 40-50 nm. Furthermore, we also used first principles calculations to understand the transformation from CNTs to GNFs from the viewpoints of the edge formation energies of GNFs in different shapes and sizes. The corresponding photoluminescence measurements of GNFs were carried out in this work.

KSC-2010-4630

NASA Image and Video Library

2010-09-09

VANDENBERG AIR FORCE BASE, Calif. – At Vandenberg Air Force Base in California, the Taurus XL rocket's 1, 2 and 3 stages are prepared for their first flight simulation, which will include testing voltages, currents, pressures, temperatures and thruster firings. The four-stage rocket is being prepared to carry NASA's Glory satellite into low Earth orbit and will lift off from Vandenberg's Launch Pad SLC 576-E. Once Glory reaches orbit, it will collect data on the properties of aerosols and black carbon. It also will help scientists understand how the sun's irradiance affects Earth's climate. Photo credit: NASA/Randy Beaudoin, VAFB

Quantification of platelets and platelet derived growth factors from platelet-rich-plasma (PRP) prepared at different centrifugal force (g) and time.

PubMed

Arora, Satyam; Doda, Veena; Kotwal, Urvershi; Dogra, Mitu

2016-02-01

Platelet derived biomaterials represent a key source of cytokines and growth factors extensively used for tissue regeneration; wound healing and tissue repair. Our study was to quantify platelets and growth factors released by PRP when prepared at different centrifugal force (g) and time. Our study was approved by the institutional ethical committee. One hundred millilitres of whole blood (WB) was collected in bag with CPDA as the anticoagulant(AC); (14 mL for 100 mL WB ratio). Nine aliquots of 10 mL each were made from the bag and set of three aliquots were made a group. PRP was prepared at varying centrifugal force (group A: -110 g, group B: -208 g & group C: -440 g) & time (1: -5 min, 2: -10 min & 3: -20 min). Contents of each PRP prepared were analysed. Commercial sandwich ELISA kits were used to quantify the concentrations of CD62P (Diaclone SAS; France), Platelet derived growth factors-AB (Qayee-Bio; China), transforming growth factor-β1 (DRG; Germany) and vascular endothelial growth factor (Boster Immuno Leader; USA) released in each PRP prepared. Eight volunteers were enrolled in the study (24-30 years). The baseline blood counts of all the volunteers were comparable (p ≥ 0.05). Mean ± SD of platelet yield of all nine groups ranged from 17.2 ± 4.2% to 78.7 ± 5.7%. Each PRP was activated with calcified thromboplastin to quantify the growth factors released by them. Significantly higher (p < 0.05) transforming growth factor-β1 and vascular endothelial growth factor were released compared to the baseline. Our study highlights the variation in both force (g) and time results in changes at cellular level and growth factor concentrations. Copyright © 2016 Elsevier Ltd. All rights reserved.

48 CFR 223.570 - Drug-free work force.

Code of Federal Regulations, 2010 CFR

2010-10-01

... 48 Federal Acquisition Regulations System 3 2010-10-01 2010-10-01 false Drug-free work force. 223.570 Section 223.570 Federal Acquisition Regulations System DEFENSE ACQUISITION REGULATIONS SYSTEM... TECHNOLOGIES, OCCUPATIONAL SAFETY, AND DRUG-FREE WORKPLACE Drug-Free Workplace 223.570 Drug-free work force. ...

48 CFR 223.570 - Drug-free work force.

Code of Federal Regulations, 2011 CFR

2011-10-01

... 48 Federal Acquisition Regulations System 3 2011-10-01 2011-10-01 false Drug-free work force. 223.570 Section 223.570 Federal Acquisition Regulations System DEFENSE ACQUISITION REGULATIONS SYSTEM... TECHNOLOGIES, OCCUPATIONAL SAFETY, AND DRUG-FREE WORKPLACE Drug-Free Workplace 223.570 Drug-free work force. ...

48 CFR 223.570 - Drug-free work force.

Code of Federal Regulations, 2013 CFR

2013-10-01

... 48 Federal Acquisition Regulations System 3 2013-10-01 2013-10-01 false Drug-free work force. 223.570 Section 223.570 Federal Acquisition Regulations System DEFENSE ACQUISITION REGULATIONS SYSTEM... TECHNOLOGIES, OCCUPATIONAL SAFETY, AND DRUG-FREE WORKPLACE Drug-Free Workplace 223.570 Drug-free work force. ...

48 CFR 223.570 - Drug-free work force.

Code of Federal Regulations, 2012 CFR

2012-10-01

... 48 Federal Acquisition Regulations System 3 2012-10-01 2012-10-01 false Drug-free work force. 223.570 Section 223.570 Federal Acquisition Regulations System DEFENSE ACQUISITION REGULATIONS SYSTEM... TECHNOLOGIES, OCCUPATIONAL SAFETY, AND DRUG-FREE WORKPLACE Drug-Free Workplace 223.570 Drug-free work force. ...

48 CFR 223.570 - Drug-free work force.

Code of Federal Regulations, 2014 CFR

2014-10-01

... 48 Federal Acquisition Regulations System 3 2014-10-01 2014-10-01 false Drug-free work force. 223.570 Section 223.570 Federal Acquisition Regulations System DEFENSE ACQUISITION REGULATIONS SYSTEM... TECHNOLOGIES, OCCUPATIONAL SAFETY, AND DRUG-FREE WORKPLACE Drug-Free Workplace 223.570 Drug-free work force. ...

[Proteins and saponins in the lipid preparation obtained by extraction of soybean flour].

PubMed

Baukova, N A; Alekseeva, S G; Sorokoumova, G M; Selishcheva, A A; Martynova, O M; Rogozhkina, E A; Shvets, V I

2002-01-01

A complex lipid preparation was obtained by extraction of soybean flour with organic solvents. This preparation was shown to include not only phospholipids (major components), but also up to 30% saponins. These compounds were identified by TLC, HPLC, and 1H-NMR spectroscopy. Minor components of the lipid extract were represented by polypeptides associated with phospholipids via electrostatic or hydrophobic forces.

Internal Aspects of the Skill Transfer of Manual Assembly Work

ERIC Educational Resources Information Center

Doyo, Daisuke

2009-01-01

In manual assembly work, parts are often assembled by applying force with a simple tool or by hand. A worker thus needs control the force he or she applies in working, as an appropriate level of force is requisite for minimizing work failures and improving efficiency. The object of this study is to clarify the relationship between the level of…

Employment in Perspective: Women in the Labor Force. Third Quarter 1988. Report 758.

ERIC Educational Resources Information Center

Bureau of Labor Statistics (DOL), Washington, DC.

The female share of the older work force has nearly doubled since 1950. In 1987, the 6.2 million women aged 55 and over in the labor force constituted 4 of every 10 older workers. Because young women today have a stronger work attachment than did their mothers and grandmothers, the female share of the older work force is likely to continue to…

49 CFR 232.5 - Definitions.

Code of Federal Regulations, 2014 CFR

2014-10-01

..., prepared by a railroad that explains in detail how pre-revenue service tests of certain equipment... that is capable of producing its nominally designed retarding force on the train. A car's air brake is not considered effective if it is not capable of producing its nominally designed retarding force or...

49 CFR 232.5 - Definitions.

Code of Federal Regulations, 2010 CFR

2010-10-01

..., prepared by a railroad that explains in detail how pre-revenue service tests of certain equipment... that is capable of producing its nominally designed retarding force on the train. A car's air brake is not considered effective if it is not capable of producing its nominally designed retarding force or...

49 CFR 232.5 - Definitions.

Code of Federal Regulations, 2013 CFR

2013-10-01

..., prepared by a railroad that explains in detail how pre-revenue service tests of certain equipment... that is capable of producing its nominally designed retarding force on the train. A car's air brake is not considered effective if it is not capable of producing its nominally designed retarding force or...

Compilation of FY 1997 Air Force General Funds Consolidated Financial Statements at the Defense Finance and Accounting Service Denver Center.

DTIC Science & Technology

1998-10-05

Consolidated Financial Statements to the Air Force Audit Agency. The Defense Finance and Accounting Service Denver Center maintained accounting records and prepared the FY 1997 financial statements for the Air Force. More than $343 billion in total assets was reported at year’s end in these statements, and total revenues for the year exceeded $64 billion. The Air Force Audit Agency disclaimed an opinion on these statements. Additionally, although the Office of Management and Budget does not require budgetary resource reporting until FY 1998, the Air Force

The Air Force Nurse Intern Program.

PubMed

Smith, R H

1991-08-01

The Air Force Nurse Intern Program is a 5-month-long introduction to Air Force nursing for BSN-prepared graduate nurses. The program is designed to facilitate the transition from civilian nursing student to practicing Air Force Nurse Corps Officer. After attending Military Indoctrination for Medical Service Officers, newly commissioned nurses attend the program at one of 10 Air Force medical centers before going to their permanent duty stations. Preceptors guide and instruct the interns at each of four clinical rotation sites. The author, a former nurse intern, describes some of the many opportunities available to nurse interns.

Countering Enemy Special Purpose Forces. An Evolving Mission for United States Special Operations Forces

DTIC Science & Technology

2001-05-01

proper planning and preparation, our LOCs become lucrative high pay -off targets for our adversaries. Similar to United States doctrine, enemy SPF will...guerillas, saboteurs, terrorists, and special operations forces. This term will be used to differentiate between friendly SOF and enemy SOF. The author...Wellington’s proficient use of irregulars against the French Army during the Peninsular Campaign; and the Russian partisans that significantly

Development of a Traumatic Brain Injury Assessment Score using Novel Biomarkers Discovered Through Autoimmune Profiling

DTIC Science & Technology

2014-08-15

N12-P12 TSNRP Research Priorities that Study or Project Addresses Primary Priority Force Health Protection: Fit and ready force Deploy...Mentoring: Health policy Recruitment and retention Preparing tomorrow’s leaders Care of the caregiver Other: Secondary Priority Force... caregiver Other: 5 Principal Investigator (Buonora, John, E) USU Project Number: N12-P12 Progress Towards Achievement of Specific Aims of

Environmental Assessment for Construction of Small Arms Range at Tinker Air Force Base, Oklahoma

DTIC Science & Technology

2008-11-01

Air Force Material Command Tinker Air Force Base, Oklahoma Prepared by: CHEROKEE CRC, LLC 916 West 23rd Street Tulsa, OK 74107...activities to avoid potential for short-term soil erosion which could result in adverse effects to water quality. Hazardous Materials and Waste...erosion which could result in adverse effects to water quality. Hazardous Materials and Waste. Soil from the remediation activities could potentially

High-Performance Polymeric Materials.

DTIC Science & Technology

1987-12-07

Chemistry and the Polymer Research Center 4 The University of Cincinnati Final Report, November 1, 1982 October 31, 1987 f,! 5:;u - . Air Force Office of...Scientific Research N. Dec imber 11, 1987 -1- FOREWORD This report was prepared at the Department of Chemistry of the University of Cincinnati, under...Grant AFOSR 83-0027. The research described hereir was administereC under the direction of the Air Force Office of Scientific Research , Boiling Air Force

Technology Transfer of the Air Quality Assessment Model.

DTIC Science & Technology

1984-02-01

i T I, _______ ENGINEERING & SERVICES LABORATORY AIR FORCE ENGINEERING & SERVICES CENTER TYNOALL AIR FORCE BASE. FLORIDA 32403 OTIC FILE CO84 03...30 015 NOTICE PLEASE DO NOT REQUEST COPIES OF THIS REPORT FRO(M HQ AFESC./RD ( ENGINEERING AND SERVICES LABORATORY). ADDITONAL COPIES MAY BE PURCHASED...report was prepared by the Air Force Engineering and Services Center, Engineering and Services Laboratory, (AFESC/ RDV) Tyndall AFB, FL. This report

KSC-2011-2626

NASA Image and Video Library

2011-03-30

VANDENBERG AIR FORCE BASE, Calif. -- Workers at Vandenberg Air Force Base in California prepare to offload the Aquarius/SAC-D spacecraft from a U.S. Air Force C-17 transport plane. The aircraft traveled from Campos, Brazil. Following final tests, the spacecraft will be integrated to a United Launch Alliance Delta II rocket in preparation for the targeted June launch to low Earth orbit. Aquarius, the NASA-built primary instrument on the SAC-D spacecraft, will map global changes in salinity at the ocean's surface. Salinity is a key measurement for understanding how changes in rainfall, evaporation and the melting of freezing of ice influence ocean circulation and are linked to variations in Earth's climate. The three-year mission will provide new insights into how variations in ocean surface salinity relate to these fundamental climate processes. Photo credit: VAFB/30th Space Wing

KSC-2011-2627

NASA Image and Video Library

2011-03-30

VANDENBERG AIR FORCE BASE, Calif. -- Workers at Vandenberg Air Force Base in California prepare to offload the Aquarius/SAC-D spacecraft from a U.S. Air Force C-17 transport plane. The aircraft traveled from Campos, Brazil. Following final tests, the spacecraft will be integrated to a United Launch Alliance Delta II rocket in preparation for the targeted June launch to low Earth orbit. Aquarius, the NASA-built primary instrument on the SAC-D spacecraft, will map global changes in salinity at the ocean's surface. Salinity is a key measurement for understanding how changes in rainfall, evaporation and the melting of freezing of ice influence ocean circulation and are linked to variations in Earth's climate. The three-year mission will provide new insights into how variations in ocean surface salinity relate to these fundamental climate processes. Photo credit: VAFB/30th Space Wing

Predicting muscle forces during the propulsion phase of single leg triple hop test.

PubMed

Alvim, Felipe Costa; Lucareli, Paulo Roberto Garcia; Menegaldo, Luciano Luporini

2018-01-01

Functional biomechanical tests allow the assessment of musculoskeletal system impairments in a simple way. Muscle force synergies associated with movement can provide additional information for diagnosis. However, such forces cannot be directly measured noninvasively. This study aims to estimate muscle activations and forces exerted during the preparation phase of the single leg triple hop test. Two different approaches were tested: static optimization (SO) and computed muscle control (CMC). As an indirect validation, model-estimated muscle activations were compared with surface electromyography (EMG) of selected hip and thigh muscles. Ten physically healthy active women performed a series of jumps, and ground reaction forces, kinematics and EMG data were recorded. An existing OpenSim model with 92 musculotendon actuators was used to estimate muscle forces. Reflective markers data were processed using the OpenSim Inverse Kinematics tool. Residual Reduction Algorithm (RRA) was applied recursively before running the SO and CMC. For both, the same adjusted kinematics were used as inputs. Both approaches presented similar residuals amplitudes. SO showed a closer agreement between the estimated activations and the EMGs of some muscles. Due to inherent EMG methodological limitations, the superiority of SO in relation to CMC can be only hypothesized. It should be confirmed by conducting further studies comparing joint contact forces. The workflow presented in this study can be used to estimate muscle forces during the preparation phase of the single leg triple hop test and allows investigating muscle activation and coordination. Copyright © 2017 Elsevier B.V. All rights reserved.

Comparative study of energy-transducing properties of cytoplasmic membranes from mesophilic and thermophilic Bacillus species.

PubMed Central

De Vrij, W; Bulthuis, R A; Konings, W N

1988-01-01

The properties of enzymes involved in energy transduction from a mesophilic (Bacillus subtilis) and a thermophilic (B. stearothermophilus) bacterium were compared. Membrane preparations of the two organisms contained dehydrogenases for NADH, succinate, L-alpha-glycerophosphate, and L-lactate. Maximum NADH and cytochrome c oxidation rates were obtained at the respective growth temperatures of the two bacteria. The enzymes involved in the oxidation reactions in membranes of the thermophilic species were more thermostable than those of the mesophilic species. The apparent microviscosities of the two membrane preparations were studied at different temperatures. At the respective optimal growth temperatures, the apparent microviscosities of the membranes of the two organisms were remarkably similar. The transition from the gel to the liquid-crystalline state occurred at different temperatures in the two species. In the two species, the oxidation of physiological (NADH) and nonphysiological (N,N,N',N'-tetramethyl-p-phenylenediamine or phenazine methosulfate) electron donors led to generation of a proton motive force which varied strongly with temperature. At increasing temperatures, the efficiency of energy transduction declined because of increasing H+ permeability. At the growth temperature, the efficiency of energy transduction was lower in B. stearothermophilus than in the mesophilic species. Extremely high respiratory activities enabled B. stearothermophilus to maintain a high proton motive force at elevated temperatures. The pH dependence of proton motive force generation appeared to be similar in the two membrane preparations. The highest proton motive forces were generated at low external pH, mainly because of a high pH gradient. At increasing external pH, the proton motive force declined. PMID:2834342

14 CFR 151.51 - Performance of construction work: Sponsor force account.

Code of Federal Regulations, 2011 CFR

2011-01-01

... 14 Aeronautics and Space 3 2011-01-01 2011-01-01 false Performance of construction work: Sponsor force account. 151.51 Section 151.51 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT... Development Projects § 151.51 Performance of construction work: Sponsor force account. (a) Before undertaking...

14 CFR 151.51 - Performance of construction work: Sponsor force account.

Code of Federal Regulations, 2010 CFR

2010-01-01

... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Performance of construction work: Sponsor force account. 151.51 Section 151.51 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT... Development Projects § 151.51 Performance of construction work: Sponsor force account. (a) Before undertaking...

14 CFR 151.51 - Performance of construction work: Sponsor force account.

Code of Federal Regulations, 2013 CFR

2013-01-01

... 14 Aeronautics and Space 3 2013-01-01 2013-01-01 false Performance of construction work: Sponsor force account. 151.51 Section 151.51 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT... Development Projects § 151.51 Performance of construction work: Sponsor force account. (a) Before undertaking...

14 CFR 151.51 - Performance of construction work: Sponsor force account.

Code of Federal Regulations, 2014 CFR

2014-01-01

... 14 Aeronautics and Space 3 2014-01-01 2014-01-01 false Performance of construction work: Sponsor force account. 151.51 Section 151.51 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT... Development Projects § 151.51 Performance of construction work: Sponsor force account. (a) Before undertaking...

14 CFR 151.51 - Performance of construction work: Sponsor force account.

Code of Federal Regulations, 2012 CFR

2012-01-01

... 14 Aeronautics and Space 3 2012-01-01 2012-01-01 false Performance of construction work: Sponsor force account. 151.51 Section 151.51 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT... Development Projects § 151.51 Performance of construction work: Sponsor force account. (a) Before undertaking...

Honeywell's Working Parents Task Force. Final Report and Recommendations.

ERIC Educational Resources Information Center

Honeywell, Inc., Minneapolis, Minn.

This publication provides a summary of the Honeywell Working Parent Task Force's recommendations on how to solve problems experienced by working parents. The Task Force consisted of three committees: the Employment Practices Committee (EPC); the Parent Education Committee (PEC); and the Child Care Facilities Committee (CCFC). After examining a…

Workforce Education: Issues for the New Century.

ERIC Educational Resources Information Center

Pautler, Albert J., Jr.

This paper is intended to guide small groups of vocational educators in discussions regarding work force education issues for the next century. The following work force issues are suggested: the aging work force; vocational education's role in reforming K-12 education; distance education for technical education programs; the labor shortages…

78 FR 67132 - GPS Satellite Simulator Control Working Group Meeting

Federal Register 2010, 2011, 2012, 2013, 2014

2013-11-08

... DEPARTMENT OF DEFENSE Department of the Air Force GPS Satellite Simulator Control Working Group Meeting AGENCY: Space and Missile Systems Center, Global Positioning Systems (GPS) Directorate, Air Force... Control Working Group (SSCWG) meeting on 6 December 2013 from 0900-1300 PST at Los Angeles Air Force Base...

Effects of a performance and quality improvement intervention on the work environment in HIV-related care: a quasi-experimental evaluation in Zambia.

PubMed

Bazant, Eva; Sarkar, Supriya; Banda, Joseph; Kanjipite, Webby; Reinhardt, Stephanie; Shasulwe, Hildah; Mulilo, Joyce Monica Chongo; Kim, Young Mi

2014-12-20

Human resource shortages and reforms in HIV-related care make it challenging for frontline health care providers in southern Africa to deliver high-quality services. At health facilities of the Zambian Defence Forces, a performance and quality improvement approach was implemented to improve HIV-related care and was evaluated in 2010/2011. Changes in providers' work environment and perceived quality of HIV-related care were assessed to complement data of provider performance. The intervention involved on-site training, supportive supervision, and action planning focusing on detailed service delivery standards. The quasi-experimental evaluation collected pre- and post-intervention data from eight intervention and comparison facilities matched on defence force branch and baseline client volume. Overall, 101 providers responded to a 24-item questionnaire on the work environment, covering topics of drugs, supplies, and equipment; training, feedback, and supervision; compensation; staffing; safety; fulfilment; and HIV services quality. In bivariate analysis and multivariate analyses, we assessed changes within each study group and between the two groups. In the bivariate analysis, the intervention group providers reported improvements in the work environment on adequacy of equipment, feeling safe from harm, confidence in clinical skills, and reduced isolation, while the comparison group reported worsening of the work environment on supplies, training, safety, and departmental morale.In the multivariate analysis, the intervention group's improvement and the comparison group's decline were significant on perceived adequacy of drugs, supplies, and equipment; constructive feedback received from supervisor and co-workers; and feeling safe from physical harm (all P <0.01, except P <0.04 for equipment). Further, the item "provider lacks confidence in some clinical skills" declined in the intervention group but increased in the comparison group (P = -0.005). In multivariate analysis, changes in perceived quality of HIV care did not differ between study groups. Provider perceptions were congruent with observations of preparing drugs, supplies, equipment, and in service delivery of prevention of mother-to-child transmission of HIV and antiretroviral therapy follow-up care. The performance and quality improvement intervention implemented at Zambian Defence Forces' health facilities was associated with improvements in providers' perceptions of work environment consistent with the intervention's focus on commodities, skills acquisition, and receipt of constructive feedback.

48 CFR 9.505-2 - Preparing specifications or work statements.

Code of Federal Regulations, 2010 CFR

2010-10-01

... or work statements. 9.505-2 Section 9.505-2 Federal Acquisition Regulations System FEDERAL... of Interest 9.505-2 Preparing specifications or work statements. (a)(1) If a contractor prepares and.... (3) In development work, it is normal to select firms that have done the most advanced work in the...

48 CFR 9.505-2 - Preparing specifications or work statements.

Code of Federal Regulations, 2014 CFR

2014-10-01

... or work statements. 9.505-2 Section 9.505-2 Federal Acquisition Regulations System FEDERAL... of Interest 9.505-2 Preparing specifications or work statements. (a)(1) If a contractor prepares and.... (3) In development work, it is normal to select firms that have done the most advanced work in the...

The health sciences librarian in medical education: a vital pathways project task force

PubMed Central

Schwartz, Diane G.; Blobaum, Paul M.; Shipman, Jean P.; Markwell, Linda Garr; Marshall, Joanne Gard

2009-01-01

Objectives: The Medical Education Task Force of the Task Force on Vital Pathways for Hospital Librarians reviewed current and future roles of health sciences librarians in medical education at the graduate and undergraduate levels and worked with national organizations to integrate library services, education, and staff into the requirements for training medical students and residents. Methods: Standards for medical education accreditation programs were studied, and a literature search was conducted on the topic of the role of the health sciences librarian in medical education. Results: Expectations for library and information services in current standards were documented, and a draft standard prepared. A comprehensive bibliography on the role of the health sciences librarian in medical education was completed, and an analysis of the services provided by health sciences librarians was created. Conclusion: An essential role and responsibility of the health sciences librarian will be to provide the health care professional with the skills needed to access, manage, and use library and information resources effectively. Validation and recognition of the health sciences librarian's contributions to medical education by accrediting agencies will be critical. The opportunity lies in health sciences librarians embracing the diverse roles that can be served in this vital activity, regardless of accrediting agency mandates. PMID:19851492

Preparing to be Unprepared: Ground Force Commander Decision Making in a Volatile, Uncertain, Complex, and Ambiguous World

DTIC Science & Technology

2016-06-01

44 IV. CONCLUSION, RECOMMENDATIONS, AND FURTHER RESEARCH ...development and mental preparation. .......................................50 C. FURTHER RESEARCH ...unforgiving, chaotic environment. With that purpose in mind, my research questions are: what are the characteristics of effective GFC decision making? What

Towards a Learning Workforce: A Policy Discussion Paper on Adult Learners at Work.

ERIC Educational Resources Information Center

Tuckett, Alan

There is widespread agreement in Great Britain that the work force must receive more skills training if the country is to be competitive in the future. Of special concern is the 70 percent of the work force who left school at the earliest possible opportunity, and the (overlapping) 70 percent of the work force who have not received training for a…

Probing the nanoscale interaction forces and elastic properties of organic and inorganic materials using force-distance (F-D) spectroscopy

NASA Astrophysics Data System (ADS)

Vincent, Abhilash

Due to their therapeutic applications such as radical scavenging, MRI contrast imaging, Photoluminescence imaging, drug delivery, etc., nanoparticles (NPs) have a significant importance in bio-nanotechnology. The reason that prevents the utilizing NPs for drug delivery in medical field is mostly due to their biocompatibility issues (incompatibility can lead to toxicity and cell death). Changes in the surface conditions of NPs often lead to NP cytotoxicity. Investigating the role of NP surface properties (surface charges and surface chemistry) on their interactions with biomolecules (Cells, protein and DNA) could enhance the current understanding of NP cytotoxicity. Hence, it is highly beneficial to the nanotechnology community to bring more attention towards the enhancement of surface properties of NPs to make them more biocompatible and less toxic to biological systems. Surface functionalization of NPs using specific ligand biomolecules have shown to enhance the protein adsorption and cellular uptake through more favorable interaction pathways. Cerium oxide NPs (CNPs also known as nanoceria) are potential antioxidants in cell culture models and understanding the nature of interaction between cerium oxide NPs and biological proteins and cells are important due to their therapeutic application (especially in site specific drug delivery systems). The surface charges and surface chemistry of CNPs play a major role in protein adsorption and cellular uptake. Hence, by tuning the surface charges and by selecting proper functional molecules on the surface, CNPs exhibiting strong adhesion to biological materials can be prepared. By probing the nanoscale interaction forces acting between CNPs and protein molecules using Atomic Force Microscopy (AFM) based force-distance (F-D) spectroscopy, the mechanism of CNP-protein adsorption and CNP cellular uptake can be understood more quantitatively. The work presented in this dissertation is based on the application of AFM in studying the interaction forces as well as the mechanical properties of nanobiomaterials. The research protocol employed in the earlier part of the dissertation is specifically aimed to understand the operation of F-D spectroscopy technique. The elastic properties of thin films of silicon dioxide NPs were investigated using F-D spectroscopy in the high force regime of few 100 nN to 1 microN. Here, sol-gel derived porous nanosilica thin films of varying surface morphology, particle size and porosity were prepared through acid and base catalyzed process. AFM nanoindentation experiments were conducted on these films using the F-D spectroscopy mode and the nanoscale elastic properties of these films were evaluated. The major contribution of this dissertation is a study exploring the interaction forces acting between CNPs and transferrin proteins in picoNewton scale regime using the force-distance spectroscopy technique. This study projects the importance of obtaining appropriate surface charges and surface chemistry so that the NP can exhibit enhanced protein adsorption and NP cellular uptake.

Current Obstacles to Fully Preparing Title 10 Forces for Homeland Defense and Civil Support

DTIC Science & Technology

2008-05-11

to its forces. These include DODD 3025.15, Military Assistance to Civil Authorities ( MACA ), which governs all DoD military assistance INCONUS. This...three major operational areas: Military Assistance to Civil Authorities ( MACA ), Military Support to Civilian Law Enforcement Agencies (MSCLEA) and

FRA/Volpe Center task force observation of operations at TVE Transrapid test facility : October 15 to December 17, 1992

DOT National Transportation Integrated Search

1993-04-01

This report prepared in April 1993 describes the operations witnessed and the relevant information obtained by nine members of the FRA/Volpe Center High Speed Guided Ground Transportation Safety Task Force during 9 weeks of observation of maglev deve...

Governor's Educational Summit Task Force Report.

ERIC Educational Resources Information Center

Michigan Governor's Office, Lansing.

This booklet contains a series of potential educational goals for Michigan in 1985, prepared by a task force appointed by the governor. The selection of these goals was guided by three major considerations: programs likely to achieve progress within a year, projects directly affecting the classroom level, and goals with statewide effects. These…

Services Training Manager’s Guide.

DTIC Science & Technology

1986-04-01

and Cookies 27906-Dr-Air Force Food Service Program-Vegetable Preparation 27954-DF-Air Force Food Service Program-Mission Support Meals 28003-DF-USAF...Quality Audit Program 28246-DF-Sweet Doughs 59 *. 282 50-DY-Quick Breads 38712-DY-Hamburger Sandwich, The 39420-DYP-Give Your Eggs a Break3 39421-DY

32 CFR 989.26 - Classified actions (40 CFR 1507.3(c)).

Code of Federal Regulations, 2010 CFR

2010-07-01

... relieve the requirement of complying with NEPA. In classified matters, the Air Force must prepare and make available normal NEPA environmental analysis documents to aid in the decision-making process; however, Air... Section 989.26 National Defense Department of Defense (Continued) DEPARTMENT OF THE AIR FORCE...

Leader Challenge: What Would You Do?

ERIC Educational Resources Information Center

Miller, Chris; Self, Nate; Garven, Sena; Allen, Nate

2011-01-01

Given the complex environment in which the U.S. military operates, leaders at all levels must be prepared for a force that is more responsive to regional combatant commanders needs, better employs joint capabilities, facilitates force packaging and rapid deployment, and fights self contained units in non-linear, non-contiguous battle space. This…

Magnetic Control of Concentration Gradient in Microgravity

NASA Technical Reports Server (NTRS)

Leslie, Fred; Ramachandran, Narayanan

2005-01-01

A report describes a technique for rapidly establishing a fluid-concentration gradient that can serve as an initial condition for an experiment on solutal instabilities associated with crystal growth in microgravity. The technique involves exploitation of the slight attractive or repulsive forces exerted on most fluids by a magnetic-field gradient. Although small, these forces can dominate in microgravity and therefore can be used to hold fluids in position in preparation for an experiment. The magnetic field is applied to a test cell, while a fluid mixture containing a concentration gradient is prepared by introducing an undiluted solution into a diluting solution in a mixing chamber. The test cell is then filled with the fluid mixture. Given the magnetic susceptibilities of the undiluted and diluting solutions, the magnetic-field gradient must be large enough that the magnetic force exceeds both (1) forces associated with the flow of the fluid mixture during filling of the test cell and (2) forces imposed by any residual gravitation and fluctuations thereof. Once the test cell has been filled with the fluid mixture, the magnetic field is switched off so that the experiment can proceed, starting from the proper initial conditions.

New graduate nurses' preparation for recognition and prevention of failure to rescue: A qualitative study.

PubMed

Herron, Elizabeth K

2018-01-01

To explore new graduate nurses' experiences with recognition and prevention of failure to rescue. Failure to rescue is recognised as a quality-of-care indicator, a core measure of nursing care in hospitals, and a determinant for staffing in acute care facilities. Clinical reasoning is an essential component in preventing failure to rescue and should be emphasised in nursing education and new graduate orientation. Many nurses graduate without the ability to use clinical reasoning in providing patient care which can lead to adverse patient outcomes. A descriptive phenomenological design was used. A purposive sample of 14 new graduate nurses from a nursing programme in the south-eastern USA, in practice for no more than eighteen months, was recruited. Individual one-on-one interviews were conducted from January-June 2016 and audio-recorded for accuracy. Data were evaluated using the consolidated criteria for reporting qualitative research (COREQ) guidelines. Recordings were professionally transcribed and reviewed. Using Giorgi's methods for data analysis, five main themes were discerned in the data: clinical preparation in school; experience with emergent situations; development of clinical reasoning; low confidence as a new graduate; and responding to emergencies. Within each theme, subthemes emerged. The words of the participants provided rich detail into the preparation of new graduate nurses and how nurse educators, managers and preceptors can better focus learning opportunities to prepare them for practice. Experiential learning combined with collaboration among education stakeholders will lead to a better prepared and more confident nursing work force. Better preparation and continued support of new graduate nurses lead to positive patient outcomes and more satisfaction with their choice of nursing as a profession. © 2017 John Wiley & Sons Ltd.

Atomic force microscopy as a tool for the investigation of living cells.

PubMed

Morkvėnaitė-Vilkončienė, Inga; Ramanavičienė, Almira; Ramanavičius, Arūnas

2013-01-01

Atomic force microscopy is a valuable and useful tool for the imaging and investigation of living cells in their natural environment at high resolution. Procedures applied to living cell preparation before measurements should be adapted individually for different kinds of cells and for the desired measurement technique. Different ways of cell immobilization, such as chemical fixation on the surface, entrapment in the pores of a membrane, or growing them directly on glass cover slips or on plastic substrates, result in the distortion or appearance of artifacts in atomic force microscopy images. Cell fixation allows the multiple use of samples and storage for a prolonged period; it also increases the resolution of imaging. Different atomic force microscopy modes are used for the imaging and analysis of living cells. The contact mode is the best for cell imaging because of high resolution, but it is usually based on the following: (i) image formation at low interaction force, (ii) low scanning speed, and (iii) usage of "soft," low resolution cantilevers. The tapping mode allows a cell to behave like a very solid material, and destructive shear forces are minimized, but imaging in liquid is difficult. The force spectroscopy mode is used for measuring the mechanical properties of cells; however, obtained results strongly depend on the cell fixation method. In this paper, the application of 3 atomic force microscopy modes including (i) contact, (ii) tapping, and (iii) force spectroscopy for the investigation of cells is described. The possibilities of cell preparation for the measurements, imaging, and determination of mechanical properties of cells are provided. The applicability of atomic force microscopy to diagnostics and other biomedical purposes is discussed.

The Changing Work Force. Trends and Issues Alerts.

ERIC Educational Resources Information Center

Lankard, Bettina A.

Economic pressures, work force diversity, and advances in technology are changing the nature of work and organizational policy and management. A predicted decline in the annual growth in gross national product is expected to trigger a slowdown in the labor force, especially in occupations that employ workers with only a high school education.…

[Fact Sheets on Working Women].

ERIC Educational Resources Information Center

National Commission on Working Women, Washington, DC.

These four fact sheets address a number of issues relating to women in the work force. The first, "An Overview of Women in the Work Force," offers a look at the numbers of women in the labor force, the occupational categories represented by women workers, women in professional and nonprofessional occupations, and women in nontraditional…

America's Changing Work Force. Statistics in Brief.

ERIC Educational Resources Information Center

American Association of Retired Persons, Washington, DC.

This booklet provides information about the changing work force. It offers a profile of workers aged 45 and older, as well as likely changes in the work force of the future. Tables and graphs illustrate the following: profile of Americans aged 50 and older, by employment status; employment status of the civilian noninstitutional population by age…

Installation Restoration Program. Phase II. Confirmation/Quantification. Stage I. Tyndall Air Force Base, Florida.

DTIC Science & Technology

1984-08-01

10 31984 . PREPARED FOR UNITED STATES AIR FORCE OCCUPATIONAL AND ENVIRONMENTAL HEALTH LABORATORY BROOKS AIR FORCE BASE, TEXAS 78235 ,,c.’p! ed di...Force August 1984 Occupational and Environmental Health Laboratory I3 NUMBER OF PAGES Aerospace Medical Division (AFSC) 249 total pages• ~~Brooks Air...PROGRAM BACKGROUND i-I 1.2 FACILITY HISTORY 1-3 1.3 DISPOSAL SITE DESCRIPTIONS 1-b 1.4 PROJECT STAFF 1-20 2.0 ENVIRONMENTAL SETTING 2-1 2.1 METEOROLOGY 2-1

Measurements of Elastic Moduli of Silicone Gel Substrates with a Microfluidic Device

PubMed Central

Gutierrez, Edgar; Groisman, Alex

2011-01-01

Thin layers of gels with mechanical properties mimicking animal tissues are widely used to study the rigidity sensing of adherent animal cells and to measure forces applied by cells to their substrate with traction force microscopy. The gels are usually based on polyacrylamide and their elastic modulus is measured with an atomic force microscope (AFM). Here we present a simple microfluidic device that generates high shear stresses in a laminar flow above a gel-coated substrate and apply the device to gels with elastic moduli in a range from 0.4 to 300 kPa that are all prepared by mixing two components of a transparent commercial silicone Sylgard 184. The elastic modulus is measured by tracking beads on the gel surface under a wide-field fluorescence microscope without any other specialized equipment. The measurements have small and simple to estimate errors and their results are confirmed by conventional tensile tests. A master curve is obtained relating the mixing ratios of the two components of Sylgard 184 with the resulting elastic moduli of the gels. The rigidity of the silicone gels is less susceptible to effects from drying, swelling, and aging than polyacrylamide gels and can be easily coated with fluorescent tracer particles and with molecules promoting cellular adhesion. This work can lead to broader use of silicone gels in the cell biology laboratory and to improved repeatability and accuracy of cell traction force microscopy and rigidity sensing experiments. PMID:21980487

The impact of working technique on physical loads - an exposure profile among newspaper editors.

PubMed

Lindegård, A; Wahlström, J; Hagberg, M; Hansson, G-A; Jonsson, P; Wigaeus Tornqvist, E

2003-05-15

The aim of this study was to investigate the possible associations between working technique, sex, symptoms and level of physical load in VDU-work. A study group of 32 employees in the editing department of a daily newspaper answered a questionnaire, about physical working conditions and symptoms from the neck and the upper extremities. Muscular load, wrist positions and computer mouse forces were measured. Working technique was assessed from an observation protocol for computer work. In addition ratings of perceived exertion and overall comfort were collected. The results showed that subjects classified as having a good working technique worked with less muscular load in the forearm (extensor carpi ulnaris p=0.03) and in the trapezius muscle on the mouse operating side (p=0.02) compared to subjects classified as having a poor working technique. Moreover there were no differences in gap frequency (number of episodes when muscle activity is below 2.5% of a reference contraction) or muscular rest (total duration of gaps) between the two working technique groups. Women in this study used more force (mean force p=0.006, peak force p=0.02) expressed as % MVC than the men when operating the computer mouse. No major differences were shown in muscular load, wrist postures, perceived exertion or perceived comfort between men and women or between cases and symptom free subjects. In conclusion a good working technique was associated with reduced muscular load in the forearm muscles and in the trapezius muscle on the mouse operating side. Moreover women used more force (mean force and peak force) than men when operating the click button (left button) of the computer mouse.

Defining Conditions for the Use of Persistent Surveillance

DTIC Science & Technology

2009-12-01

as hard as the Air Force has worked the North Dakota and Ohio delegations,’ says Colonel Charles Bartlett, head of a special Air Force task force on...UAVs…While Richard Shelby , the Republican senator from Alabama, is concerned about the impact on Redstone Arsenal, which manages much of the Army’s...UAV work, Byron Dorgan, the North Dakota Democratic senator, wants to attract more work for Grand Forks Air Force base, partly to make up for the

Apprentice Food Service Specialist (AFSC 62230).

ERIC Educational Resources Information Center

Air Univ., Gunter AFS, Ala. Extension Course Inst.

This two-volume student text is designed for use by Air Force personnel enrolled in a self-study extension course for apprentice food service specialists. Covered in the first volume are fundamentals of food preparation and service (careers in food service, food service sanitation, principles of food preparation and service, and baking…

Nuclear Strategy and World Order: The United States Imperative.

ERIC Educational Resources Information Center

Beres, Louis Rene

The current U.S. nuclear strategy goes beyond the legitimate objective of survivable strategic forces to active preparation for nuclear war. The Reagan administration strategy rejects minimum deterrence and prepares for a nuclear war that might be protracted and controlled. The strategy reflects the understanding that a combination of counterforce…

The Preparation and Simple Analysis of a Clay Nanoparticle Composite Hydrogel

ERIC Educational Resources Information Center

Warren, David S.; Sutherland, Sam P. H.; Kao, Jacqueline Y.; Weal, Geoffrey R.; Mackay, Sean M.

2017-01-01

Samples of a composite hydrogel incorporating clay (Laponite XLG and S-482) nanoparticles were prepared using N-isopropylacrylamide. The hydrogels were formed via a radical-initiated addition polymerization using potassium persulfate and N,N,N',N'-tetramethylethylenediamine. Students then measured the force required to stretch the gels and…

Hybridized Teacher Education Programs in NYC: A Missed Opportunity?

ERIC Educational Resources Information Center

Mungal, Angus Shiva

2015-01-01

This qualitative study describes the development of hybrid teacher preparation programs that emerged as a result of a "forced" partnership between university-based and alternative teacher preparation programs in New York City. This hybrid experiment was a short-lived, yet innovative by-product of a somewhat pragmatic arrangement between…

An Interpolation and Compaction Technique for Gridded Data.

DTIC Science & Technology

1983-06-27

Scientific Research 13. NUMBER OF PAGES Bolling AFB DC 20332 /*. 59 14. MONITORING AGENCY NAME & ADDRESS(if different from Controlling Office) IS...ByBy___{ Distribution/ FINAL REPORT Availabiiity Codes Avail and/or .-. Dist Special Prepared for V; Air Force Office of Scientific Research Boiling Air...Force Base, DC 20332 Under Grand AFOSR-82-0166 • , .4 This report was written for the Air Force Office of Scientific Research under Grant AFOSR-82-0166

Staff Report on the Guaranteed Student Loan Program, Belmont Task Force Recommendations. Prepared for the Subcommittee on Postsecondary Education of the Committee on Education and Labor.

ERIC Educational Resources Information Center

Congress of the U.S., Washington, DC. House Committee on Education and Labor.

Recommendations of the Belmont Task Force concerning the problem of student loan defaults are offered to the U.S. House of Representatives. The task force concludes that the purpose of the Guaranteed Student Loan (GSL) program has changed significantly in the last decade. While originally established as a loan of convenience for middle-income…

7 CFR 1710.209 - Approval requirements for load forecast work plans.

Code of Federal Regulations, 2010 CFR

2010-01-01

... cooperate in the preparation of and submittal of the load forecast work plan of their power supply borrower. (b) An approved load forecast work plan establishes the process for the preparation and maintenance... approved load forecast work plan must outline the coordination and preparation requirements for both the...

Young women's preferences for market work: responses to marital events.

PubMed

Spitze, G D; Waite, L J

1981-01-01

A causal model of changes in women's longrun tastes for paid employment was developed. It is based on the premise that women have a certain preference for market versus home work at the beginning of a year and that during the year some women experience a marital event, which may be a 1st marriage, a 1st birth, or the breakup of an existing marriage. This marital event may then cause some of the women experiencing it to revise their relative tastes for employment and work in the home. It is argued that changes in the level of such resources as time and money and changes in feelings of personal fulfillment that occur as a result of marriage, 1st birth, or divorce are responsible for alterations in market work preferences. Data from the National Longitudinal Survey of Young Women were used to examine how women's relative preference for market work and home work are affected by the transitions of 1st marriage, marital dissolution, and 1st birth. This survey includes yearly data on over 5000 young women over a recent 5 year period. Personal interviews were conducted with a national probability sample of the noninstitutionalized female population age 14-24 in 1968, with yearly reinterviews through 1973. The impact of a 1st marriage during a year on preference for market work at the end of that year was consistently negative from ages 14 through 23. The likelihood that a young woman prefers market to home work at age 35 decreases from 10-20 percentage points upon 1st marriage. Women who first marry beyond age 24 experience no change in preferences for labor force participation. The positive impact of marital dissolution on a young woman's preference for labor force participation was substantial--between 18 and 29 percentage points--and tended to be higher the later it occurred. The experience of marital dissolution causes women to need to prepare for work. The results suggest that it also increases their desire to work. A 1st birth had no immediate impact but was followed 1-2 years later by striking upward revisions in market work preferences. For women between ages 16-27 who experienced a 1st birth, the probability that they prefer paid employment to home was increased by 10-15 percentage points. This effect was consistently positive and was significant for 6 out of 7 age groups. The occurrence of a 1st birth continued to have an impact on a woman's preference for labor force participation up to about age 25; marriage had no impact beyond age 23.

Statistics of work performed on a forced quantum oscillator.

PubMed

Talkner, Peter; Burada, P Sekhar; Hänggi, Peter

2008-07-01

Various aspects of the statistics of work performed by an external classical force on a quantum mechanical system are elucidated for a driven harmonic oscillator. In this special case two parameters are introduced that are sufficient to completely characterize the force protocol. Explicit results for the characteristic function of work and the corresponding probability distribution are provided and discussed for three different types of initial states of the oscillator: microcanonical, canonical, and coherent states. Depending on the choice of the initial state the probability distributions of the performed work may greatly differ. This result in particular also holds true for identical force protocols. General fluctuation and work theorems holding for microcanonical and canonical initial states are confirmed.

Mitigated-force carriage for high magnetic field environments

DOEpatents

Ludtka, Gerard M.; Ludtka, Gail M.; Wilgen, John B.; Murphy, Bart L.

2015-05-19

A carriage for high magnetic field environments includes a plurality of work-piece separators disposed in an operable relationship with a work-piece processing magnet having a magnetic field strength of at least 1 Tesla for supporting and separating a plurality of work-pieces by a preselected, essentially equal spacing, so that, as a first work-piece is inserted into the magnetic field, a second work-piece is simultaneously withdrawn from the magnetic field, so that an attractive magnetic force imparted on the first work-piece offsets a resistive magnetic force imparted on the second work-piece.

Pt decorated MoS2 nanoflakes for ultrasensitive resistive humidity sensor

NASA Astrophysics Data System (ADS)

Burman, Debasree; Santra, Sumita; Pramanik, Panchanan; Guha, Prasanta Kumar

2018-03-01

In this work, we report the fabrication of a low power, humidity sensor where platinum nanoparticles (NPs) decorated few-layered molybdenum disulphide (MoS2) nanoflakes have been used as the sensing layer. A mixed solvent was used to exfoliate the nanoflakes from the bulk powder. Then the Pt/MoS2 composites were prepared by reducing Pt NPs from chloroplatinic acid hexahydrate using a novel reduction technique using sulphide salt. The successful reduction and composite preparation were confirmed using various material characterization tools like scanning electron microscopy, atomic force microscopy, transmission electron microscopy, x-ray diffraction, x-ray photoelectron spectroscopy, Raman spectroscopy and UV-visible spectroscopy. The humidity sensors were prepared by drop-coating the Pt-decorated MoS2 on gold interdigitated electrodes and then exposed to various levels of relative humidity (RH). Composites with different weight ratios of Pt were tested and the best response was shown by the Pt/MoS2 (0.25:1) sample with a record high response of ˜4000 times at 85% RH. The response and recovery times were ˜92 s and ˜154 s respectively with repeatable behaviour. The sensor performance was found to be stable when tested over a few months. The underlying sensing mechanisms along with detailed characterization of the various composites have been discussed.

High quality NMR structures: a new force field with implicit water and membrane solvation for Xplor-NIH.

PubMed

Tian, Ye; Schwieters, Charles D; Opella, Stanley J; Marassi, Francesca M

2017-01-01

Structure determination of proteins by NMR is unique in its ability to measure restraints, very accurately, in environments and under conditions that closely mimic those encountered in vivo. For example, advances in solid-state NMR methods enable structure determination of membrane proteins in detergent-free lipid bilayers, and of large soluble proteins prepared by sedimentation, while parallel advances in solution NMR methods and optimization of detergent-free lipid nanodiscs are rapidly pushing the envelope of the size limit for both soluble and membrane proteins. These experimental advantages, however, are partially squandered during structure calculation, because the commonly used force fields are purely repulsive and neglect solvation, Van der Waals forces and electrostatic energy. Here we describe a new force field, and updated energy functions, for protein structure calculations with EEFx implicit solvation, electrostatics, and Van der Waals Lennard-Jones forces, in the widely used program Xplor-NIH. The new force field is based primarily on CHARMM22, facilitating calculations with a wider range of biomolecules. The new EEFx energy function has been rewritten to enable OpenMP parallelism, and optimized to enhance computation efficiency. It implements solvation, electrostatics, and Van der Waals energy terms together, thus ensuring more consistent and efficient computation of the complete nonbonded energy lists. Updates in the related python module allow detailed analysis of the interaction energies and associated parameters. The new force field and energy function work with both soluble proteins and membrane proteins, including those with cofactors or engineered tags, and are very effective in situations where there are sparse experimental restraints. Results obtained for NMR-restrained calculations with a set of five soluble proteins and five membrane proteins show that structures calculated with EEFx have significant improvements in accuracy, precision, and conformation, and that structure refinement can be obtained by short relaxation with EEFx to obtain improvements in these key metrics. These developments broaden the range of biomolecular structures that can be calculated with high fidelity from NMR restraints.

KSC-2011-2724

NASA Image and Video Library

2011-04-01

VANDENBERG AIR FORCE BASE, Calif. -- Technicians prepare to unpack and unveil the Aquarius/SAC-D spacecraft in the Spaceport Systems International payload processing facility at Vandenberg Air Force Base in California. The container protected the spacecraft on its journey from Campos, Brazil, aboard a U.S. Air Force C-17 transport plane. Following final tests, the spacecraft will be integrated to a United Launch Alliance Delta II rocket in preparation for the targeted June launch to low Earth orbit. Aquarius, the NASA-built primary instrument on the SAC-D spacecraft, will map global changes in salinity at the ocean's surface. Salinity is a key measurement for understanding how changes in rainfall, evaporation and the melting of freezing of ice influence ocean circulation and are linked to variations in Earth's climate. The three-year mission will provide new insights into how variations in ocean surface salinity relate to these fundamental climate processes. Photo credit: NASA/Randy Beaudoin, VAFB

Experimental estimation of energy absorption during heel strike in human barefoot walking.

PubMed

Baines, Patricia M; Schwab, A L; van Soest, A J

2018-01-01

Metabolic energy expenditure during human gait is poorly understood. Mechanical energy loss during heel strike contributes to this energy expenditure. Previous work has estimated the energy absorption during heel strike as 0.8 J using an effective foot mass model. The aim of our study is to investigate the possibility of determining the energy absorption by more directly estimating the work done by the ground reaction force, the force-integral method. Concurrently another aim is to compare this method of direct determination of work to the method of an effective foot mass model. Participants of our experimental study were asked to walk barefoot at preferred speed. Ground reaction force and lower leg kinematics were collected at high sampling frequency (3000 Hz; 1295 Hz), with tight synchronization. The work done by the ground reaction force is 3.8 J, estimated by integrating this force over the foot-ankle deformation. The effective mass model is improved by dropping the assumption that foot-ankle deformation is maximal at the instant of the impact force peak. On theoretical grounds it is clear that in the presence of substantial damping that peak force and peak deformation do not occur simultaneously. The energy absorption results, due the vertical force only, corresponding to the force-integral method is similar to the results of the improved application of the effective mass model (2.7 J; 2.5 J). However the total work done by the ground reaction force calculated by the force-integral method is significantly higher than that of the vertical component alone. We conclude that direct estimation of the work done by the ground reaction force is possible and preferable over the use of the effective foot mass model. Assuming that energy absorbed is lost, the mechanical energy loss of heel strike is around 3.8 J for preferred walking speeds (≈ 1.3 m/s), which contributes to about 15-20% of the overall metabolic cost of transport.

Aligning career development with organizational goals: working towards the development of a strong and sustainable workforce.

PubMed

Saxe-Braithwaite, Marcy; Carlton, Sandra; Bass, Brenda

2009-01-01

The rapidly changing world of healthcare is faced with many challenges, not the least of which is a diminishing workforce. Healthcare organizations must develop multiple strategies, not only to attract and retain employees, but also to ensure that workers are prepared for continuous change in the workplace, are working at their full scope of practice and are committed to, and accountable for, the provision of high-quality care. There is evidence that by creating a healthier workplace, improved patient care will follow. Aligning Healthy Workplace Initiatives with an organization's strategic goals, corporate culture and vision reinforces their importance within the organization. In this paper, we describe an innovative pilot to assess a career development program, one of multiple Healthy Workplace Initiatives taking place at Providence Care in Kingston, Ontario in support of our three strategic goals. The results of the pilot were very encouraging; subsequent success in obtaining funding from HealthForceOntario has allowed the implementation of a sustainable program of career development within the organization. More work is required to evaluate its long-term effectiveness.

Work and power outputs determined from pedalling and flywheel friction forces during brief maximal exertion on a cycle ergometer.

PubMed

Hibi, N; Fujinaga, H; Ishii, K

1996-01-01

Work and power outputs during short-term, maximal exertion on a friction loaded cycle ergometer are usually calculated from the friction force applied to the flywheel. The inertia of the flywheel is sometimes taken into consideration, but the effects of internal resistances and other factors have been ignored. The purpose of this study was to estimate their effects by comparing work or power output determined from the force exerted on the pedals (pedalling force) with work or power output determined from the friction force and the moment of inertia of the rotational parts. A group of 22 male college students accelerated a cycle ergometer as rapidly as possible for 3 s. The total work output determined from the pedalling force (TWp) was significantly greater than that calculated from the friction force and the moment of inertia (TWf). Power output determined from the pedalling force during each pedal stroke (SPp) was also significantly greater than that calculated from the friction force and the moment of inertia. Percentage difference (% diff), defined by % diff = ¿(TWp - TWf)/TWf¿ x 100, ranged from 16.8% to 49.3% with a mean value of 30.8 (SD 9.1)%. It was observed that % diff values were higher in subjects with greater TWp or greater maximal SPp. These results would indicate that internal resistances and other factors, such as the deformation of the chain and the vibrations of the entire system, may have significant effects on the measurements of work and power outputs. The effects appear to depend on the magnitudes of pedalling force and pedal velocity.

'The artist's piece is already in the stone': constructing creativity in paleontology laboratories.

PubMed

Wylie, Caitlin Donahue

2015-02-01

Laboratory technicians are typically portrayed as manual workers following routine procedures to produce scientific data. However, technicians in vertebrate paleontology laboratories often describe their work in terms of creativity and artistry. Fossil specimens undergo extensive preparation--including rock removal, damage repair, and reconstruction of missing parts--to become accessible to researchers. Technicians called 'fossil preparators' choose, apply, and sometimes invent these preparation methods. They have no formal training, no standard protocols, and few publications to consult on techniques. Despite the resulting diversity of people and practices, preparators and their work are usually absent from research publications, making them 'invisible technicians' in Steven Shapin's sense. But preparators reject the view of their work as predictable or simple; in particular, many preparators value art training, the aesthetics of prepared fossils, and the process of creative problem-solving in their work. Based on interviews and participant observation and drawing from literature in science studies, sociology of work, and anthropology of craft, I ask why these technicians compare themselves with artists and how this portrayal affects scientific practice and social order in laboratories. I argue that associating artistry and creativity with their work distances preparators from ideas of unskilled technical work and technicians' low status, thus improving their social role in the laboratory community and preserving their power over laboratory practices.

Work in America: Implications for Families. Hearing before the Select Committee on Children, Youth, and Families. House of Representatives, Ninety-Ninth Congress, Second Session.

ERIC Educational Resources Information Center

Congress of the U.S., Washington, DC. House Select Committee on Children, Youth, and Families.

This hearing explored the value of work, and how changes in the economy and the composition of the work force have affected families. Witnesses (1) reported data on such topics as the kinds of jobs currently available, women's participation in the work force, unemployment, and labor force growth over the next decade; (2) argued that the economy is…

Reduction in Force: Is Your Board Prepared?

ERIC Educational Resources Information Center

Stanley, William L., Jr.

A reduction in force (RIF), coupled with today's inflation and cost of living increases, impacts on school systems. This paper discusses the effects on an urban school system--the Atlanta Public Schools--and offers suggestions to school administrators on moves to make and pitfalls to avoid when faced with RIF. Some topics covered include legal…

Reduction in Force: Is Your Board Prepared?

ERIC Educational Resources Information Center

Haun, Francis R.

To help ameliorate the adverse effects of reduction in force (RIF), school districts facing declining enrollments should develop and adopt RIF policies before they are needed. School district officials should compile up-to-date enrollment projections and anticipated staff needs. The board of education should take care to inform the public and to…

2014 Texas Military Value Task Force: Preparing for the Future

DTIC Science & Technology

2014-01-01

Mayor Bob Bruggeman, City of Texarkana 4. Naval Air Station Fort Worth Joint Reserve Base, City of Fort Worth 5. Dyess Air Force Base, Mayor Norm...Ellington Field): Composite – 98.2 Killeen (Fort Hood): Composite – 85.0 San Antonio (JBSA): Composite – 92.5 Texarkana (RRAD): Composite – 94.6 Wichita

The Changing Adolescent Experience: Societal Trends and the Transition to Adulthood.

ERIC Educational Resources Information Center

Mortimer, Jeylan T.; Larson, Reed W.

The path adolescents take from childhood to adulthood is a product of social, economic, political, and technological forces. These forces may facilitate youths preparation to become healthy adults, or they may leave youth unprepared for adulthood. Knowledgeable projections are vital in shaping the agenda for research; for alerting educators,…

Parallels in Conflict: The American Revolution and the Vietnam War

DTIC Science & Technology

1986-05-01

in World War * 14 II. American forces were psychologically ill-prepared to fight a jungle war against highly motivated, indigenous Communist forces... atar - : a by/ necessity a realistic consequLence cf that ob 1,ecz~e The- ’::nm- tainment" objective spawned a political polt- wh-c :ra’-e dilemma

32 CFR 865.122 - Summary of statistics for Discharge Review Board.

Code of Federal Regulations, 2010 CFR

2010-07-01

... 32 National Defense 6 2010-07-01 2010-07-01 false Summary of statistics for Discharge Review Board. 865.122 Section 865.122 National Defense Department of Defense (Continued) DEPARTMENT OF THE AIR FORCE... statistics for Discharge Review Board. The Air Force Discharge Review Board shall prepare and provide to the...

Recommendations for training in pediatric psychology: defining core competencies across training levels.

PubMed

Palermo, Tonya M; Janicke, David M; McQuaid, Elizabeth L; Mullins, Larry L; Robins, Paul M; Wu, Yelena P

2014-10-01

As a field, pediatric psychology has focused considerable efforts on the education and training of students and practitioners. Alongside a broader movement toward competency attainment in professional psychology and within the health professions, the Society of Pediatric Psychology commissioned a Task Force to establish core competencies in pediatric psychology and address the need for contemporary training recommendations.   The Task Force adapted the framework proposed by the Competency Benchmarks Work Group on preparing psychologists for health service practice and defined competencies applicable across training levels ranging from initial practicum training to entry into the professional workforce in pediatric psychology.   Competencies within 6 cluster areas, including science, professionalism, interpersonal, application, education, and systems, and 1 crosscutting cluster, crosscutting knowledge competencies in pediatric psychology, are presented in this report.   Recommendations for the use of, and the further refinement of, these suggested competencies are discussed. © The Author 2014. Published by Oxford University Press on behalf of the Society of Pediatric Psychology. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.

Non-destructive monitoring of Bloch oscillations in an optical cavity

NASA Astrophysics Data System (ADS)

Klinder, Jens; Kessler, Hans; Venkatesh, B. Prasanna; Georges, Christoph; Vargas, Jose; Hemmerich, Andreas

2017-04-01

Bloch oscillations are a hallmark of coherent wave dynamics in periodic potentials. They occur as the response of quantum mechanical particles in a lattice if a weak force is applied. In optical lattices with their perfect periodic structure they can be readily observed and employed as a quantum mechanical force sensor, for example, for precise measurements of the gravitational acceleration. However, the destructive character of the measurement process in previous experimental implementations poses serious limitations for the precision of such measurements. We show that the use of an optical cavity operating in the regime of strong cooperative coupling allows one to directly monitor Bloch oscillations of a cloud of cold atoms in the light leaking out of the cavity. Hence, with a single atomic sample the Bloch oscillation dynamics can be mapped out, while in previous experiments, each data point required the preparation of a new atom cloud. The use of a cavity-based monitor should greatly improve the precision of Bloch oscillation measurements for metrological purposes. This work was partially supported by DFG-SFB925 and the Hamburg centre of ultrafast imaging (CUI).

KSC-2012-1601

NASA Image and Video Library

2012-02-29

VANDENBERG AIR FORCE BASE, Calif. -- NASA's Nuclear Spectroscopic Telescope Array NuSTAR spacecraft is wrapped in its protective cover and half of its payload fairing is behind it in processing facility 1555 at Vandenberg Air Force Base in California. Technicians are performing fairing closeout work in preparation for fairing installation around the spacecraft, which is scheduled to begin March 2. The cover protecting NuSTAR's delicate instruments will be removed prior to the fairing installation. The fairing will protect the spacecraft from the heat and aerodynamic pressure generated during ascent to orbit aboard an Orbital Sciences Pegasus XL rocket. After processing of the rocket and spacecraft are complete, they will be flown on Orbital's L-1011 carrier aircraft from Vandenberg to the Ronald Reagan Ballistic Missile Defense Test Site on the Pacific Ocean’s Kwajalein Atoll for launch. The high-energy X-ray telescope will conduct a census of black holes, map radioactive material in young supernovae remnants, and study the origins of cosmic rays and the extreme physics around collapsed stars. For more information, visit http://www.nasa.gov/nustar. Photo credit: NASA/Randy Beaudoin, VAFB

Increased myocardial short-range forces in a rodent model of diabetes reflect elevated content of β myosin heavy chain.

PubMed

Chung, Charles S; Mitov, Mihail I; Callahan, Leigh Ann; Campbell, Kenneth S

2014-06-15

Diastolic dysfunction is a clinically significant problem for patients with diabetes and often reflects increased ventricular stiffness. Attached cross-bridges contribute to myocardial stiffness and produce short-range forces, but it is not yet known whether these forces are altered in diabetes. In this study, we tested the hypothesis that cross-bridge-based short-range forces are increased in the streptozotocin (STZ) induced rat model of type 1 diabetes. Chemically permeabilized myocardial preparations were obtained from 12week old rats that had been injected with STZ or vehicle 4weeks earlier, and activated in solutions with pCa (=-log10[Ca(2+)]) values ranging from 9.0 to 4.5. The short-range forces elicited by controlled length changes were ∼67% greater in the samples from the diabetic rats than in the control preparations. This change was mostly due to an increased elastic limit (the length change at the peak short-range force) as opposed to increased passive muscle stiffness. The STZ-induced increase in short-ranges forces is thus unlikely to reflect changes to titin and/or collagen filaments. Gel electrophoresis showed that STZ increased the relative expression of β myosin heavy chain. This molecular mechanism can explain the increased short-ranges forces observed in the diabetic tissue if β myosin molecules remain bound between the filaments for longer durations than α molecules during imposed movements. These results suggest that interventions that decrease myosin attachment times may be useful treatments for diastolic dysfunction associated with diabetes. Copyright © 2013 Elsevier Inc. All rights reserved.

Mitigated-force carriage for high magnetic field environments

DOEpatents

Ludtka, Gerard M; Ludtka, Gail M; Wilgen, John B; Murphy, Bart L

2014-05-20

A carriage for high magnetic field environments includes a first work-piece holding means for holding a first work-piece, the first work-piece holding means being disposed in an operable relationship with a work-piece processing magnet having a magnetic field strength of at least 1 Tesla. The first work-piece holding means is further disposed in operable connection with a second work-piece holding means for holding a second work-piece so that, as the first work-piece is inserted into the magnetic field, the second work-piece is simultaneously withdrawn from the magnetic field, so that an attractive magnetic force imparted on the first work-piece offsets a resistive magnetic force imparted on the second work-piece.

KSC-2015-1286

NASA Image and Video Library

2015-02-04

CAPE CANAVERAL, Fla. – Preparations are underway in the mobile service tower at Space Launch Complex 41 on Cape Canaveral Air Force Station in Florida for the arrival of the first stage of a United Launch Alliance Atlas V rocket from the Atlas Spaceflight Operations Center, or ASOC. The rocket will launch NASA's Magnetospheric Multiscale mission, or MMS. MMS will study the mystery of how magnetic fields around Earth connect and disconnect, explosively releasing energy via a process known a magnetic reconnection. MMS consists of four identical spacecraft that work together to provide the first three-dimensional view of this fundamental process, which occurs throughout the universe. Launch is set for March 12. To learn more about MMS, visit http://www.nasa.gov/mms. Photo credit: NASA/Jim Grossmann

Numerical approach on dynamic self-assembly of colloidal particles

NASA Astrophysics Data System (ADS)

Ibrahimi, Muhamet; Ilday, Serim; Makey, Ghaith; Pavlov, Ihor; Yavuz, Özgàn; Gulseren, Oguz; Ilday, Fatih Omer

Far from equilibrium systems of artificial ensembles are crucial for understanding many intelligent features in self-organized natural systems. However, the lack of established theory underlies a need for numerical implementations. Inspired by a novel work, we simulate a solution-suspended colloidal system that dynamically self assembles due to convective forces generated in the solvent when heated by a laser. In order to incorporate with random fluctuations of particles and continuously changing flow, we exploit a random-walk based Brownian motion model and a fluid dynamics solver prepared for games, respectively. Simulation results manage to fit to experiments and show many quantitative features of a non equilibrium dynamic self assembly, including phase space compression and an ensemble-energy input feedback loop.

KSC-2013-2627

NASA Image and Video Library

2013-06-10

VANDENBERG AFB – Detail of the Orbital Sciences Pegasus XL rocket that will lift NASA's IRIS solar observatory into orbit in June. The work is taking place in a hangar at Vandenberg Air Force Base where IRIS, short for Interface Region Imaging Spectrograph, is being prepared for launch from Vandenberg June 26. IRIS will open a new window of discovery by tracing the flow of energy and plasma through the chromospheres and transition region into the sun’s corona using spectrometry and imaging. IRIS fills a crucial gap in our ability to advance studies of the sun-to-Earth connection by tracing the flow of energy and plasma through the foundation of the corona and the region around the sun known as the heliosphere. Photo credit: NASA/Tony Vauclin

KSC-2013-2620

NASA Image and Video Library

2013-06-10

VANDENBERG AFB – Detail of the Orbital Sciences Pegasus XL rocket that will lift NASA's IRIS solar observatory into orbit in June. The work is taking place in a hangar at Vandenberg Air Force Base where IRIS, short for Interface Region Imaging Spectrograph, is being prepared for launch from Vandenberg June 26. IRIS will open a new window of discovery by tracing the flow of energy and plasma through the chromospheres and transition region into the sun’s corona using spectrometry and imaging. IRIS fills a crucial gap in our ability to advance studies of the sun-to-Earth connection by tracing the flow of energy and plasma through the foundation of the corona and the region around the sun known as the heliosphere. Photo credit: NASA/Tony Vauclin

KSC-2013-2625

NASA Image and Video Library

2013-06-10

VANDENBERG AFB – Detail of the Orbital Sciences Pegasus XL rocket that will lift NASA's IRIS solar observatory into orbit in June. The work is taking place in a hangar at Vandenberg Air Force Base where IRIS, short for Interface Region Imaging Spectrograph, is being prepared for launch from Vandenberg June 26. IRIS will open a new window of discovery by tracing the flow of energy and plasma through the chromospheres and transition region into the sun’s corona using spectrometry and imaging. IRIS fills a crucial gap in our ability to advance studies of the sun-to-Earth connection by tracing the flow of energy and plasma through the foundation of the corona and the region around the sun known as the heliosphere. Photo credit: NASA/Tony Vauclin

Structural and magnetic analysis of Cu, Co substituted NiFe{sub 2}O{sub 4} thin films

DOE Office of Scientific and Technical Information (OSTI.GOV)

Sharma, Hakikat; Bala, Kanchan; Negi, N. S.

2016-05-23

In the present work we prepared NiFe{sub 2}O{sub 4}, Ni{sub 0.95}Cu{sub 0.05}Fe{sub 2}O{sub 4} and Ni{sub 0.94}Cu{sub 0.05}Co{sub 0.01} Fe{sub 2}O{sub 4} thin films by metallo-organic decomposition method (MOD) using spin coating technique. The thin films were analyzed by X-ray diffractometer (XRD) and Atomic force microscope (AFM) for structural studies. The XRD patterns confirmed the ferrite phase of thin films. From AFM, we analyzed surface morphology, calculated grain size (GS) and root mean square roughness (RMSR). Room temperature magnetic properties were investigated by vibrating sample magnetometer (VSM).

Method of preparing a two-way shape memory alloy

DOEpatents

Johnson, A.D.

1984-03-06

A two-way shape memory alloy, a method of training a shape memory alloy, and a heat engine employing the two-way shape memory alloy to do external work during both heating and cooling phases are disclosed. The alloy is heated under a first training stress to a temperature which is above the upper operating temperature of the alloy, then cooled to a cold temperature below the zero-force transition temperature of the alloy, then deformed while applying a second training stress which is greater in magnitude than the stress at which the alloy is to be operated, then heated back to the hot temperature, changing from the second training stress back to the first training stress. 8 figs.

Definitions for a common standard for 2D speckle tracking echocardiography: consensus document of the EACVI/ASE/Industry Task Force to standardize deformation imaging.

PubMed

Voigt, Jens-Uwe; Pedrizzetti, Gianni; Lysyansky, Peter; Marwick, Tom H; Houle, Hélène; Baumann, Rolf; Pedri, Stefano; Ito, Yasuhiro; Abe, Yasuhiko; Metz, Stephen; Song, Joo Hyun; Hamilton, Jamie; Sengupta, Partho P; Kolias, Theodore J; d'Hooge, Jan; Aurigemma, Gerard P; Thomas, James D; Badano, Luigi Paolo

2015-02-01

Recognizing the critical need for standardization in strain imaging, in 2010, the European Association of Echocardiography (now the European Association of Cardiovascular Imaging, EACVI) and the American Society of Echocardiography (ASE) invited technical representatives from all interested vendors to participate in a concerted effort to reduce intervendor variability of strain measurement. As an initial product of the work of the EACVI/ASE/Industry initiative to standardize deformation imaging, we prepared this technical document which is intended to provide definitions, names, abbreviations, formulas, and procedures for calculation of physical quantities derived from speckle tracking echocardiography and thus create a common standard. Copyright © 2015 American Society of Echocardiography. All rights reserved.

Quantification of the tug-back by measuring the pulling force and micro computed tomographic evaluation.

PubMed

Jeon, Su-Jin; Moon, Young-Mi; Seo, Min-Seock

2017-11-01

The aims of this study were to quantify tug-back by measuring the pulling force and investigate the correlation of clinical tug-back pulling force with in vitro gutta-percha (GP) cone adaptation score using micro-computed tomography (µCT). Twenty-eight roots from human single-rooted teeth were divided into 2 groups. In the ProTaper Next (PTN) group, root canals were prepared with PTN, and in the ProFile (PF) group, root canals were prepared using PF ( n = 14). The degree of tug-back was scored after selecting taper-matched GP cones. A novel method using a spring balance was designed to quantify the tug-back by measuring the pulling force. The correlation between tug-back scores, pulling force, and percentage of the gutta-percha occupied area (pGPOA) within apical 3 mm was investigated using µCT. The data were analyzed using Pearson's correlation analysis, one-way analysis of variance (ANOVA) and Tukey's test. Specimens with a strong tug-back had a mean pulling force of 1.24 N (range, 0.15-1.70 N). This study showed a positive correlation between tug-back score, pulling force, and pGPOA. However, there was no significant difference in these factors between the PTN and PF groups. Regardless of the groups, pGPOA and pulling force were significantly higher in the specimens with a higher tug-back score ( p < 0.05). The degree of subjective tug-back was a definitive determinant for master cone adaptation in the root canal. The use of the tug-back scoring system and pulling force allows the interpretation of subjective tug-back in a more objective and quantitative manner.

Final Environmental Assessment: Addressing Construction of a New Civil Engineering Workshop at Bellows Air Force Station, O’ahu, Hawaii

DTIC Science & Technology

2010-03-01

FINAL ENVIRONMENTAL ASSESSMENT ADDRESSING CONSTRUCTION OF A NEW CIVIL ENGINEERING WORKSHOP AT BELLOWS AIR FORCE STATION , O‘AHU, HAWAI‘I...Minimize impacts on other Bellows AFS functions and environmental resources This alternative would be located in an area located near Building 546 and...Preparation of An Environmental Assessment for the Proposed Construction of New Civil Engineering Workshop at Bellows Air !Force Station Thank you

Can the Air Force and Airlines Collaborate for Mutual Benefit An Exploration of Pilot and Maintenance Workforce Options

DTIC Science & Technology

2016-01-01

Training; Resource Management; and Strategy and Doctrine. The research reported here was prepared under contract FA7014-06-C-0001. Additional information...bankruptcies and mergers. During this period, many airline pilot groups made concessions on pay and benefits. By 2015, pay levels for major airline pilots had... Virgin America UNIQUE_CARRIER_NAME 14 Figure 8. Air Force and Commercial Maintenance Personnel Salaries NOTE: AF Annual = Air Force, enlisted. Avg

Labor Force

ERIC Educational Resources Information Center

Occupational Outlook Quarterly, 2012

2012-01-01

The labor force is the number of people ages 16 or older who are either working or looking for work. It does not include active-duty military personnel or the institutionalized population, such as prison inmates. Determining the size of the labor force is a way of determining how big the economy can get. The size of the labor force depends on two…

Flextime: A Modified Work Force Scheduling Technique for Selected Headquarters Air Force Logistics Command Organizations.

ERIC Educational Resources Information Center

Kimzey, Reed T.; Prince, Samuel M. O.

The thesis discusses the advantages and disadvantages of one work force scheduling technique--flextime. The authors were interested in determining if a flextime schedule could be put into effect in a governmental organization such as Headquarters Air Force Logistics Command (AFLC). The study objectives were to determine the feasibility,…

The force required to fracture endodontically roots restored with various materials as intra-orifice barriers.

PubMed

Yasa, E; Arslan, H; Yasa, B; Akcay, M; Alsancak, M; Hatirli, H

2017-10-01

To evaluate the effect of various materials as intra-orifice barriers on the force required fracture roots. One hundred-thirty five mandibular premolars were decoronated and prepared up to size #40. The root canals were filled and randomly divided into two control and seven experimental groups (n = 15), as follows: Positive control group (the intra-orifice barrier cavity was not prepared), negative control group (the intra-orifice barrier cavity was prepared, but not filled), filling using glass ionomer cement, nano-hybrid composite resin, short fiber-reinforced composite, bulk-fill flowable composite, MTA Angelus, Micro Mega MTA or Biodentine. A fracture strength test was performed, and the data were analyzed using one-way ANOVA and Tukey's post hoc tests. Nano-hybrid composite, short fiber-reinforced composite, bulk-fill flow able composite, and glass ionomer cement increased the force required fracture the roots compared to the positive and negative control groups (P < 0.05). While MTA groups did not increase the force required fracture the roots compared to the control groups, Biodentine increased significantly. Within the limitations of the present study, the use of nano-hybrid composite, short fiber-reinforced composite, bulk-fill flowable composite, and glass ionomer cement as an intra-orifice barrier may be useful in reinforcing roots. MTA placement (MTA Angelus or Micro Mega MTA) did not significantly increase the fracture resistance of endodontically treated roots compared to the control groups, however Biodentine did.

Writing Seveso II safety reports: new EU guidance reflecting 5 years' experience with the Directive.

PubMed

Wood, Maureen Heraty; Fabbri, Luciano; Struckl, Michael

2008-09-15

Since the coming into force of the Seveso II Directive, considerable experience has been acquired in regard to preparation of safety reports for establishments that fall under the requirements of this Directive. In light of this experience, the Amendment of the Seveso II Directive adopted by the European Parliament and the Council on 16 December 2003, gave the European Commission the mandate "to review by 31 December 2006 in close cooperation with the Member States, the existing Guidance on the Preparation of a safety report (EUR 17690)". As a result, a technical working group of Member States representing the Seveso competent authorities and the European Commission's Major Accident Hazards Bureau was established to review and re-examine the guidance. The new guidance maintains the high-level and overarching character of the older version, but improves the document through better definition of conceptual elements of the safety report and greater alignment with Annex II of the Directive, which describes the essential elements of the safety report. This paper describes the new guidance in terms of its contribution to developing a harmonized conceptual framework for preparing and reviewing safety reports within the context of Seveso II implementation. Overall, the aim of the guidance is to provide concrete advice to operators and competent authorities on the logic and expectations underlying the safety report, so as to make both preparation and review of the report a more efficient and useful exercise for all parties involved.

Length dependence of force generation exhibit similarities between rat cardiac myocytes and skeletal muscle fibres.

PubMed

Hanft, Laurin M; McDonald, Kerry S

2010-08-01

According to the Frank-Starling relationship, increased ventricular volume increases cardiac output, which helps match cardiac output to peripheral circulatory demand. The cellular basis for this relationship is in large part the myofilament length-tension relationship. Length-tension relationships in maximally calcium activated preparations are relatively shallow and similar between cardiac myocytes and skeletal muscle fibres. During twitch activations length-tension relationships become steeper in both cardiac and skeletal muscle; however, it remains unclear whether length dependence of tension differs between striated muscle cell types during submaximal activations. The purpose of this study was to compare sarcomere length-tension relationships and the sarcomere length dependence of force development between rat skinned left ventricular cardiac myocytes and fast-twitch and slow-twitch skeletal muscle fibres. Muscle cell preparations were calcium activated to yield 50% maximal force, after which isometric force and rate constants (k(tr)) of force development were measured over a range of sarcomere lengths. Myofilament length-tension relationships were considerably steeper in fast-twitch fibres compared to slow-twitch fibres. Interestingly, cardiac myocyte preparations exhibited two populations of length-tension relationships, one steeper than fast-twitch fibres and the other similar to slow-twitch fibres. Moreover, myocytes with shallow length-tension relationships were converted to steeper length-tension relationships by protein kinase A (PKA)-induced myofilament phosphorylation. Sarcomere length-k(tr) relationships were distinct between all three cell types and exhibited patterns markedly different from Ca(2+) activation-dependent k(tr) relationships. Overall, these findings indicate cardiac myocytes exhibit varied length-tension relationships and sarcomere length appears a dominant modulator of force development rates. Importantly, cardiac myocyte length-tension relationships appear able to switch between slow-twitch-like and fast-twitch-like by PKA-mediated myofibrillar phosphorylation, which implicates a novel means for controlling Frank-Starling relationships.

Preparation of asymmetric porous materials

DOEpatents

Coker, Eric N [Albuquerque, NM

2012-08-07

A method for preparing an asymmetric porous material by depositing a porous material film on a flexible substrate, and applying an anisotropic stress to the porous media on the flexible substrate, where the anisotropic stress results from a stress such as an applied mechanical force, a thermal gradient, and an applied voltage, to form an asymmetric porous material.

Chaos in the Kitchen: A Hands-On Demonstration

ERIC Educational Resources Information Center

Roe-Dale, Rachel

2014-01-01

This article outlines a class activity where students prepare croissants to get an intuitive feeling for the nature of a strange attractor. In particular during the preparation of the pastry dough, students investigate the effects of stretching and folding. These physical processes force trajectories (in this case the pastry dough) to remain…

Preparing Globally Competent Teachers: A New Imperative for Teacher Education

ERIC Educational Resources Information Center

Zhao, Yong

2010-01-01

Globalization is one of the most powerful forces that will shape the future world in which our children will live. How to prepare our children to live successfully in this world has become a challenging question for education. This article discusses the challenges globalization presents to education and the implications for teacher education.

AAPT Guidelines for Two-Year College Physics Programs.

ERIC Educational Resources Information Center

Dickison, Alexander, Ed.; And Others

The quality of a two-year college's physics program is determined in part by the quality of preparation and the overall workload of its teachers, along with the provision for adequate budgets, facilities, and support services. The guidelines presented in this booklet were prepared by a task force of the American Association of Physics Teachers…

AAPT Guidelines for High School Physics Programs.

ERIC Educational Resources Information Center

Mays, Katherine

The quality of a high school's physics program is determined in part by the quality of preparation and the overall workload of its teachers, along with the provision for adequate budgets, facilities, and support services. The guidelines presented in this booklet were prepared by a task force of the American Association of Physics Teachers (AAPT)…

Teachers without Borders: Consequences of Teacher Labor Force Mobility

ERIC Educational Resources Information Center

Bastian, Kevin C.; Henry, Gary T.

2015-01-01

Many states have responded to teacher shortages by granting certification to individuals traditionally prepared out-of-state; now, out-of-state prepared teachers comprise a sizable percentage of the teacher workforce in many states. We know little about these teachers, and therefore, in the present study, we estimate the effectiveness of…

Preparing for Landing

ERIC Educational Resources Information Center

Stanistreet, Paul

2008-01-01

There were a few raised eyebrows when the Association of Colleges (AoC) appointed Martin Doel, an Air Commodore with almost 30 year's service in the Royal Air Force (RAF) but little direct experience of college culture, as its new Chief Executive. As he prepares to take the helm next month, Doel, while acknowledging the challenges ahead, is…

Creativity, Diversity, and Integration: Radical Change in the Bachelor of Music Curriculum

ERIC Educational Resources Information Center

Myers, David E.

2016-01-01

During 2013-2014, the Task Force on the Undergraduate Music Major of the USA's College Music Society prepared a report entitled "Transforming Music Study from its Foundations: A Manifesto for Progressive Change in the Undergraduate Preparation of Music Majors." The report is a call for increased relevance in undergraduate music studies…

Plow power requirements for forest site preparation

Treesearch

Matthew W. Veal; Steven E. Taylor; Robert B. Rummer; Randy R. Raper

2005-01-01

In this field study, data were collected to determine power requirements required by a trailing site preparation plow and the magnitudes of dynamic forces experienced by a plow during normal operation and during impact with stumps or other obstructions. Drawbar pull data were collected from five different tillage treatments on a recently harvested loblolly pine (

Resisting Fragmentation: Calling for a Holistic Approach to Professional Practice and Preparation for Educational Leaders

ERIC Educational Resources Information Center

Drago-Severson, Eleanor; Maslin-Ostrowski, Patricia; Hoffman, Alexander M.

2012-01-01

An online survey (using forced-choice and open-ended questions) of faculty at two university-situated degree-granting leadership preparation programs revealed that the faculty describe critical connections for developing leadership capacity: theory-practice nexus, university-based learning and "real-life" experience, and nurturing deeper…

76 FR 71332 - Notice of Intent (Noi) To Prepare an Environmental Assessment for Minuteman III and Peacekeeper...

Federal Register 2010, 2011, 2012, 2013, 2014

2011-11-17

... DEPARTMENT OF DEFENSE Department of the Air Force Notice of Intent (Noi) To Prepare an Environmental Assessment for Minuteman III and Peacekeeper Silo Elimination/Dismantlement Malmstrom Missile... issues to be addressed and to help identify significant environmental issues to be analyzed in depth...

Vocational Preparation for Women: A Critical Analysis.

ERIC Educational Resources Information Center

Steiger, JoAnn

In this analysis of vocational preparation for women material is presented to substantiate the claim that women are joining the labor force in increasing numbers and their career opportunities are expanding, but that the educational system has failed to respond. Statistical data is cited showing that women have traditionally been employed in just…

Torsional Performance of ProTaper Gold Rotary Instruments during Shaping of Small Root Canals after 2 Different Glide Path Preparations.

PubMed

Arias, Ana; de Vasconcelos, Rafaela Andrade; Hernández, Alexis; Peters, Ove A

2017-03-01

The purpose of this study was to assess the ex vivo torsional performance of a novel rotary system in small root canals after 2 different glide path preparations. Each independent canal of 8 mesial roots of mandibular molars was randomly assigned to achieve a reproducible glide path with a new set of either PathFile #1 (Dentsply Maillefer, Ballaigues, Switzerland) and #2 or ProGlider (Dentsply Maillefer) after negotiation with a 10 K-file. After glide path preparation, root canals in both groups were shaped with the same sequence of ProTaper Gold (Dentsply Tulsa Dental Specialties, Tulsa, OK) following the directions for use recommended by the manufacturer. A total of 16 new sets of each instrument of the ProTaper Gold (PTG) system were used. The tests were run in a standardized fashion in a torque-testing platform. Peak torque (Ncm) and force (N) were registered during the shaping procedure and compared with Student t tests after normal distribution of data was confirmed. No significant differences were found for any of the instruments in peak torque or force after the 2 different glide path preparations (P > .05). Data presented in this study also serve as a basis for the recommended torque for the use of PTG instruments. Under the conditions of this study, differences in the torsional performance of PTG rotary instruments after 2 different glide path preparations could not be shown. The different geometry of glide path rotary systems seemed to have no effect on peak torque and force induced by PTG rotary instruments when shaping small root canals in extracted teeth. Copyright © 2016 American Association of Endodontists. Published by Elsevier Inc. All rights reserved.

A Very Simple Strategy for Preparing External Stress-Free Two-Way Shape Memory Polymers by Making Use of Hydrogen Bonds.

PubMed

Fan, Long Fei; Rong, Min Zhi; Zhang, Ming Qiu; Chen, Xu Dong

2018-05-11

Development of two-way shape memory polymers that operate free of external force remains a great challenge. Here, the design criteria for this type of material are proposed, deriving a novel fabrication strategy accordingly, which employs conventional crosslinked polyurethane (PU) containing crystalline poly(ε-caprolactone) (PCL) as the proof-of-concept material. Having been simply trained by stretching and thermal treatment without additional ingredients and chemicals, the PU is coupled with a two-way shape memory effect. The core advancement of this study lies in the successful conversion of the inherent hydrogen bond network, which is often the easiest to overlook, into an internal stress provider. The temperature-dependent reversible melting/recrystallization of the crystalline phases elaborately works with the tensed hydrogen bond network, leading to implementation of the two-way shape memory effect. An average reversible strain of as high as ≈20% along the stretch direction is obtained through cooperation adjustment of chemical crosslinking density, crystallinity, and concentration of hydrogen bonds. Meanwhile, the highest internal tension offered by the hydrogen bond network is determined to be 0.10 MPa. Owing to the great convenience characterized by material selection, preparation, programming, and application, the current work may open up an avenue for production and usage of the smart material. © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Lightweight Bulldozer Attachment for Construction and Excavation on the Lunar Surface

NASA Technical Reports Server (NTRS)

Mueller, Robert; Wilkinson, R. Allen; Gallo, Christopher A.; Nick, Andrew J.; Schuler, Jason M.; King, Robert H.

2009-01-01

A lightweight bulldozer blade prototype has been designed and built to be used as an excavation implement in conjunction with the NASA Chariot lunar mobility platform prototype. The combined system was then used in a variety of field tests in order to characterize structural loads, excavation performance and learn about the operational behavior of lunar excavation in geotechnical lunar simulants. The purpose of this effort was to evaluate the feasibility of lunar excavation for site preparation at a planned NASA lunar outpost. Once the feasibility has been determined then the technology will become available as a candidate element in the NASA Lunar Surface Systems Architecture. In addition to NASA experimental testing of the LANCE blade, NASA engineers completed analytical work on the expected draft forces using classical soil mechanics methods. The Colorado School of Mines (CSM) team utilized finite element analysis (FEA) to study the interaction between the cutting edge of the LANCE blade and the surface of soil. FEA was also used to examine various load cases and their effect on the lightweight structure of the LANCE blade. Overall it has been determined that a lunar bulldozer blade is a viable technology for lunar outpost site preparation, but further work is required to characterize the behavior in 1/6th G and actual lunar regolith in a vacuum lunar environment.

Multi-shape memory polymers achieved by the spatio-assembly of 3D printable thermoplastic building blocks.

PubMed

Li, Hongze; Gao, Xiang; Luo, Yingwu

2016-04-07

Multi-shape memory polymers were prepared by the macroscale spatio-assembly of building blocks in this work. The building blocks were methyl acrylate-co-styrene (MA-co-St) copolymers, which have the St-block-(St-random-MA)-block-St tri-block chain sequence. This design ensures that their transition temperatures can be adjusted over a wide range by varying the composition of the middle block. The two St blocks at the chain ends can generate a crosslink network in the final device to achieve strong bonding force between building blocks and the shape memory capacity. Due to their thermoplastic properties, 3D printing was employed for the spatio-assembly to build devices. This method is capable of introducing many transition phases into one device and preparing complicated shapes via 3D printing. The device can perform a complex action via a series of shape changes. Besides, this method can avoid the difficult programing of a series of temporary shapes. The control of intermediate temporary shapes was realized via programing the shapes and locations of building blocks in the final device.

Structural, optical and NO2 gas sensing properties of ZnMgO thin films prepared by the sol gel method

NASA Astrophysics Data System (ADS)

Chebil, W.; Boukadhaba, M. A.; Madhi, I.; Fouzri, A.; Lusson, A.; Vilar, C.; Sallet, V.

2017-01-01

In this present work, ZnO and ZnMgO thin films prepared by a sol-gel process were deposited on glass substrates via spin coating technique. The structural, morphological and optical properties of the obtained films were investigated. X-ray diffraction study revealed that all layers exhibit a hexagonal wurtzite structure without any secondary phase segregation. The atomic force microscopy (AFM) depicts that the grains size of ours samples decreases as magnesium content increases. The absorption spectra obtained on ZnMgO thin films show a band gap tuning from 3.19 to 3.36 eV, which is also consistent with blue shifting of near-band edge PL emission, measured at low temperature. The incorporated amount of magnesium was calculated and confirmed by EDX. The gas sensing performances were tested in air containing NO2 for different operating temperatures. The experimental result exhibited that ZnMgO sensors shows a faster response and recovery time than the ZnO thin films. The resistivity and the sensor response as function of Mg content were also investigated.

Impact of rural training on physician work force: the role of postresidency education.

PubMed

Acosta, D A

2000-01-01

Many innovative strategies have been developed over the years to improve the recruitment and retention of physicians in the shortage areas of rural America. These strategies have met with varying success. Postresidency education, or fellowship training, for family physicians is yet another strategy that has been developed for the same purpose. Most applicants have been interested in obstetrical and rural health fellowship programs as a means for preparing for rural practice. This paper describes these programs (demographics, funding, applicant pool, curriculum) and reviews their graduate outcomes (practice location after matriculation, clinical privileges). Twenty-nine obstetrical and nine rural health fellowships are currently operational in the United States. Fellows who complete a rural health fellowship have a higher tendency to locate in rural settings. Almost all graduates from obstetrical and rural health programs attain general hospital privileges in family practice, including low-risk obstetrics. A significant number of graduates from both types of programs attain privileges in high-risk and operative obstetrics as well. Fellowship training can play an integral role in the preparation of family physicians for rural practice.

Development of a piezoelectric sensor for the detection of methamphetamine.

PubMed

Romero Guerra, Maria; Chianella, Iva; Piletska, Elena V; Karim, Kal; Turner, Anthony P F; Piletsky, Sergey A

2009-08-01

A computationally designed molecularly imprinted polymer (MIP) specific for methamphetamine was used as a synthetic receptor for the development of a piezoelectric sensor. Several different protocols were tested for the immobilisation of the MIP onto the gold sensor surface. The developed MIP sensor had a detection limit for methamphetamine as low as 1 microg mL(-1). The effect of the addition of poly(vinyl acetate) (PVA) on the pre-polymerisation mixtures, which increases the porosity of the polymer layer, was also studied using an Atomic Force Microscope (AFM). PVA seemed to affect both the porosity and the binding kinetics of the polymers prepared in dimethylformamide (DMF). However, no clear effect on porosity and binding kinetics was observed when polymers were prepared in diglyme. Moreover, PVA did not appear to improve the amplitude of the sensor response. In conclusion, because of its excellent recognition ability in aqueous solutions, the sensor described in this work could be an ideal starting point for the development of a commercial device for fast, on-site or road-side testing of drugs of abuse in body fluids such as saliva.

Glass sample preparation and performance investigations

NASA Astrophysics Data System (ADS)

Johnson, R. Barry

1992-04-01

This final report details the work performed under this delivery order from April 1991 through April 1992. The currently available capabilities for integrated optical performance modeling at MSFC for large and complex systems such as AXAF were investigated. The Integrated Structural Modeling (ISM) program developed by Boeing for the U.S. Air Force was obtained and installed on two DECstations 5000 at MSFC. The structural, thermal and optical analysis programs available in ISM were evaluated. As part of the optomechanical engineering activities, technical support was provided in the design of support structure, mirror assembly, filter wheel assembly and material selection for the Solar X-ray Imager (SXI) program. As part of the fabrication activities, a large number of zerodur glass samples were prepared in different sizes and shapes for acid etching, coating and polishing experiments to characterize the subsurface damage and stresses produced by the grinding and polishing operations. Various optical components for AXAF video microscope and the x-ray test facility were also fabricated. A number of glass fabrication and test instruments such as a scatter plate interferometer, a gravity feed saw and some phenolic cutting blades were fabricated, integrated and tested.

Influence of nickel-titanium rotary systems with varying tapers on the biomechanical behaviour of maxillary first premolars under occlusal forces: a finite element analysis study.

PubMed

Askerbeyli Örs, S; Serper, A

2018-05-01

To evaluate the effect of three nickel-titanium (Ni-Ti) rotary systems with varying tapers on stress distribution and to analyse potential fracture patterns as well as the volume of fracture-susceptible regions in two-rooted maxillary premolars. The root canals of three single-rooted premolars were prepared with either HeroShaper (Micro-Mega, Besançon, France) to (size 30, .04 taper), Revo-S (Micro-Mega) to AS30 (size 30, .06 taper) or ProTaper Universal (Dentsply Maillefer, Ballaigues, Switzerland) to F3 (size 30, .09 taper) Ni-Ti files. The three root canals were scanned using micro-computed tomography (μCT) (Skyscan 1174, Skyscan, Kontich, Belgium) and modelled according to the μCT data. An intact tooth model with a root length of 16 mm was also constructed based on μCT images of an extracted maxillary premolar with two roots. New models were constructed by replacing both of the original canals of the intact two-rooted premolar model with the modelled canals prepared with the HeroShaper, Revo-S or ProTaper Universal system. Occlusal forces of 200 N were applied in oblique and vertical directions. Finite element analysis was performed using Abaqus FEA software (Abaqus 6.14, ABAQUS Inc., Providence, RI, USA). Upon the application of oblique occlusal forces, the palatal external cervical root surface and the bifurcation (palatal side of the buccal root) in tooth models experienced the highest maximum principal (Pmax) stresses. The application of vertical forces resulted in minor Pmax stress values. Models prepared using the ProTaper system exhibited the highest Pmax stress values. The intact models exhibited the lowest Pmax stress values followed by the models prepared with the HeroShaper system. The differences in Pmax stress values amongst the different groups of models were mathematically minimal under normal occlusal forces. Rotary systems with varying tapers might predispose the root fracture on the palatal side of the buccal root and cervical palatal root surface in two-rooted premolars. © 2017 International Endodontic Journal. Published by John Wiley & Sons Ltd.

Fifth Report of the NASA Advisory Council Task Force on the Shuttle-Mir Rendezvous and Docking Missions

NASA Technical Reports Server (NTRS)

1995-01-01

The NASA Advisory Council Task Force on the Shuttle-Mir rendezvous and docking missions examine a number of specific issues related to the Shuttle-Mir program. Three teams composed of Task Force members and technical advisors were formed to address the follow issues: preliminary results from STS-71 and the status of preparations for STS-74; NASA's presence in Russia; and NASA's automated data processing and telecommunications (ADP/T) infrastructure in Russia. The three review team reports have been included in the fifth report of the Task Force.