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仿生电子制作

作者： (巴西)newton C.·Braga

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机电一体化小装置制作

Meru University of Science and Technology Research Ethics Review System: A SWOT Analysis

作者： (巴西)newton C.·Braga

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Journal of Biosciences and Medicines 2018年第12期6卷 26-44页

作者： Joses Muthuri Kirigia Rosenabi Deborah Karimi Muthuri newton Gitonga African Sustainable Development Research Consortium (ASDRC) Nairobi Kenya

The objectives of this article are as follows: 1) to propose a university research ethics system framework, 2) to provide a brief anatomy of the Meru University of Science and Technology (MUST) Institutional Research Ethics Review Committee (MIRERC), 3) to perform a SWOT (Strengths, Weaknesses, Opportunities, and Threats) analysis of MIRERC, and 4) to make recommendations for improving its performance. The 13-member multi-disciplinary MIRERC was established in April 2017 to provide effective ethical oversight of research undertaken by the University’s scholarly community. Strengths of the MUST research ethics review system include a functional MIRERC, a pertinent national law and ethical guidelines, an Innovation and Enterprise Centre that could house a dedicated MIRERC Secretariat, and a supportive University Management Board. The weaknesses include lack of graduate schools to assure scientific rigor of proposals before submission to the MIRERC, lack of research ethics training in most school’s curricula, absence of a dedicated MIRERC Secretariat, undergraduate research proposals being not ethically reviewed, dearth of faculty trained in research ethics, and lack of an operating budget for MIRERC work. The opportunities include existence of about 22 accredited Institutional Research Ethics Review Committees (IRERC) in Kenya, existence of international standards and operational guidance for ethics review, availability of guidelines and codes of best ethical practices in research, existence of a free automated platform called Research for Health Innovation Organizer (RHInnO) Ethics for managing the ethics review process, and availability of external resources for strengthening IRERCs. In order to improve the performance and sustainability of the MUST research ethics system, there is need to include research ethics training in all undergraduate and post-graduate curricula, create a dynamic database of potential research ethics reviewers, allocate a percentage of the a

关键词： Meru University of Science and Technology Kenya Institutional Research Ethics Review Committee Research Ethics System SWOTs Analysis

Comparison of Ultrasound Blood Flow Characteristics of the Lower Limb in Diabetics with Early-Stage Peripheral Artery Disease and Non-Diabetic Controls

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Journal of Diabetes Mellitus 2023年第2期13卷 178-195页

作者： Josephine Sekai Tityiwe newton-Hughes Anne Azangwe Godfrey Comfort Paul Radiography Department National University of Science and Technology Bulawayo Zimbabwe School of Health and Society University of Salford Greater Manchester UK

The aim of this study was to compare lower limb blood flow in asymptomatic diabetic patients with early-stage peripheral artery disease (PAD) and non-diabetic controls using duplex ultrasound parameters. This was a comparative cohort study of lower limb blood flow in 35 Black-African diabetic patients (25 females and 10 males with early-stage PAD median age 54 [IQR, 47 - 61] years;median HbA1c 6.3 [IQR, 5.7 - 8.0]%;BMI 29.2 ± 6.7;ABI 1.1 ± 0.1) and 36 non-diabetic controls (28 females and 8 males;median age 54 [IQR, 47 - 61] years;median HbA1c 6.3 [IQR, 5.7 - 8.0] %, BMI 29.2 ± 6.7;ABI 1.1 ± 0.1). Peak systolic velocity (PSV), pulsatility index (PI) and resistive index (RI), were utilised to compare blood flow in the popliteal arteries (PA), anterior tibial arteries (ATA) and posterior tibial arteries (PTA) in addition to ankle brachial index. All the ultrasound parameters showed good (ICC ≥ 0.7;0.50 - 0.85, 95% CI) to excellent (ICC = 1.0;1.0 - 1.0, 95% CI) reliability within groups as well as acceptable variability () other than pulsatility index of the anterior tibial artery within diabetic patients (11.1% CV). PSV, RI and PI were significantly and meaningfully higher (P;d ≥ 0.33), in diabetic patients compared to non-diabetic controls except for PI - PTA (P = 0.72;d = 0.11). Differences in PSV and RI highlighted the effects of early-stage PAD on lower limb blood flow of diabetic patients. In contrast, the effects of early-stage PAD on blood flow were not demonstrated in the PTA and ATA of diabetic patients by PI.

关键词： Atherosclerosis Peak Systolic Velocity Pulsatility Index Resistive Index

Numerical modeling of adhesion and adhesive failure during unidirectional contact between metallic surfaces

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Friction 2016年第3期4卷 217-227页

作者： Eleir M.BORTOLETO Erika F.PRADOS Vanessa SERIACOPI newton K.FUKUMASU Luiz G.D.B.da S.LIMA Izabel F.MACHADO Roberto M.SOUZA Surface Phenomena Laboratory Department of Mechanical Engineering Polytechnic School of the University of S(a)o Paulo Av.Prof.Mello Moraes 2231 S(a)o Paulo 05508-900 Brazil Federal University of ABC-UFABC Santo André 09210-170 Brazil

In this work, we developed a finite element modeling approach to study adhesion during unidirectional contact between a two-dimensional plane-strain square and a flat slab. The surfaces were metallic or ceramic, and we analyzed different pairs of materials and their adhesion intensity using a FORTRAN subroutine (DLOAD) connected to a commercial finite element code Abaqus, which provided the surface attractive forces based on the Lennard-Jones interatomic potential using Hamaker constants. We considered adhesive loads during both the approach and separation of the surfaces. During the separation step, we modeled the material transfer between surfaces due to adhesion with respect to damage initiation and propagation at the flat slab. The parameters considered in the simulations include normal load, chemical affinity, and system size, and we analyzed different conditions by comparing the interaction forces during approach and withdrawal. This work also presents: (i) a description of the evolution of energy dissipation due to adhesion hysteresis, (ii) the formation–growth–breakage process of the adhesive junctions and the material transfer between surfaces, and (iii) an adhesive wear map based on a proposed novel equation that correlates the material parameters and material loss due to adhesion. The results indicate that the chemical affinity between bodies in contact is more related to adhesion than the applied load. In addition, the ratio between the material strength and elastic modulus seems to be an important factor in reducing adhesive wear.

关键词： adhesion adhesive failure finite element model interatomic potentials Hamaker constants

The relationship between self-presentation concerns and pre-game affect among adolescent American football players

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Journal of Sport and Health Science 2013年第3期2卷 168-175页

作者： Leslie Podlog Marc Lochbaum Jens Kleinert James Dimmock Maria newton Stefanie Schulte Department of Exercise and Sport Science University of Utah Department of Health Exercise and Sport SciencesTexas Tech University Department of Health&Social Psychology Institute of PsychologyGerman Sport University Cologne School of Sport Science Exercise and HealthThe University of Western Australia Institute of Movement and Neurosciences German Sport University Cologne

Background： The influence of self-presentation concerns on the adolescent sport experience has received scant empirical attention. The purpose of this investigation was to prospectively examine the relationship among self-presentational concerns and pre-game affective states among middle and high school aged football players. Methods： American football players （n = 112; mean age = 15.57 years） completed a measure of self-presentational concerns （SPSQ, McGowan, et al., 2008） a week prior to the measurement of selected pre-game affective states （i.e., attentiveness, self-assurance, serenity, and fear）. Results： Regression analyses revealed that concerns about appearing athletically untalented negatively contributed to the significant prediction （p 〈 0.001） of pre-game attentiveness, /3 = -0.43, Radj ^2 19.5% （p 〈 0.001）, and self-assurance, /3 = -0.38, R^dj = 11.9% （p 〈 0.01）. Conclusion： These findings highlight the importance of reducing self-presentational concerns in promoting positive pre-game mental states that likely impact the quality of athletes＇ competitive play and experience. Copyright @ 2012, Shanghai University of Sport. Production and hosting by Elsevier B.V. All rights reserved.

关键词： Attentiveness Longitudinal Self-assurance Self-presentation

用GC-三级四极杆MS/MS一次进样筛选鱼和飞灰样品基质中四至八氯代PCDD/Fs的方法

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环境化学 2006年第4期25卷 524-527页

作者： Keith Worrall Anthony newton Ramesh Rao David Wood 单位不详

用高分离能力的气相色谱-高分辨质谱（HRGC-HRMS）核实二噁英／呋喃是一项昂贵又费时的分析工作，需要高素质的仪器操作人员，而在认证分析前采用筛选法检查样品是检测不出还是浓度超出HRGC-HRMS方法定量范围，可以大大地减少HRGC-HRMS... 详细信息

用高分离能力的气相色谱-高分辨质谱（HRGC-HRMS）核实二噁英／呋喃是一项昂贵又费时的分析工作，需要高素质的仪器操作人员，而在认证分析前采用筛选法检查样品是检测不出还是浓度超出HRGC-HRMS方法定量范围，可以大大地减少HRGC-HRMS实验室的工作负荷．最新提供的信息表明约10％筛选过的样品需用HRGC-HRMS认证／核实。有些GC／MS／MS方法需要多次进样以获得有毒和无毒的PCDD／Fs，或用功能变换法可以确保检测出所有的有毒的2，3，7，8-氯代PCDD／Fs，但损失某些无毒的PCDD／Fs（2，3，7，8氯代PCDD／Fs除外）．

关键词： PCDD/Fs 一次进样筛选法 MS/MS 氯代样品四极杆基质飞灰三级

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工业城市的末日及城市财政危机

地理译报 1989年第1期8卷 26-29页

作者： K.newton 阎小培苏林

本文论述了当代社会后工业化阶段经济需求和技术能力使得大城市、尤其是工业城市过多,从而出现了普遍的城市衰退以及城市购政危机等方面的问题。然而与“城市末日”这一理论相反,本文认为城市并非正在丧失经济基础,而是在转换其经济基... 详细信息

本文论述了当代社会后工业化阶段经济需求和技术能力使得大城市、尤其是工业城市过多,从而出现了普遍的城市衰退以及城市购政危机等方面的问题。然而与“城市末日”这一理论相反,本文认为城市并非正在丧失经济基础,而是在转换其经济基础。过去城市是生产中心,而现在城市却成为生产、分配,消费协调中心。英国的一些实际情况可以说明这一论点。本文最后得出一些切实可行的政策结论。

关键词：工业城市城市财政危机经济

Moderating variables in the relationship between mental toughness and performance in basketball

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Journal of Sport and Health Science 2013年第3期2卷 184-192页

作者： Aubrey Newland Maria newton Laura Finch Colin R.Harbke Leslie Podlog Department of Exercise and Sport Science University of Utah Department of Kinesiology Health&Physical EducationSt.Cloud State University Department of Psychology Western Illinois University

Purpose： This study explored the relationship between mental toughness and college basketball performance, specifically examining possible moderating variables （gender and starting status）. Methods： Male and female （n = 197） college basketball players completed the Psychological Performance Inventory-Alternative （PPI-A）, a measure of characteristics and skills consistent with mental toughness, and the PERK an objective measure of basketball performance. Results： Findings suggest that basketball performance can be partially predicted by mental toughness and starting status. Males reported greater mental toughness than females. Starters and nonstarters did not differ in mental toughness. Moderated hierarchical regression analysis indicated that mental toughness was related to performance for male players as both a main effect and interaction with starter status. For female players, in contrast, starter status was the only significant predictor of performance. Practitioners are encouraged to foster the psychological skills associated with mental toughness in females and non-starters in basketball. Conclusion： Discussion of the PPI-A as a measure of mental toughness and suggestions for its improvement are explored. A need exists for additional research on mental toughness and objective performance, as performance enhancement is a major impetus for research on mental toughness. Copyright @ 2012, Shanghai University of Sport. Production and hosting by Elsevier B.V. All rights reserved.

关键词： Basketball Mental toughness Moderating variables Performance Psychological Performance Inventory-Alternative Psychological skills