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https://www.readbyqxmd.com/read/28813992/review-of-the-actuators-of-active-knee-prostheses-and-their-target-design-outputs-for-activities-of-daily-living
#1
Dominik Simon Pieringer, Martin Grimmer, Michael Friedrich Russold, Robert Riener
Active prosthetic knees have the capability to provide net positive work, which is required in daily activities like stair and ramp negotiation or sit-to-stand transfers. Adding this capability might help to increase user mobility, safety, and independence. This article summarizes the biomechanical knee requirements for different activities of daily living and critically compares them with the actuator characteristics of state-of-the-art active prosthetic knee joints. As a result of a systematic literature research 22 active prosthetic knee joints were identified...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28813975/a-lightweight-robotic-ankle-prosthesis-with-non-backdrivable-cam-based-transmission
#2
Tommaso Lenzi, Marco Cempini, Jeremy Newkirk, Levi J Hargrove, Todd A Kuiken
Below-knee level amputation significantly impacts the ability of an individual to ambulate. Transtibial amputees are typically prescribed energetically passive ankle-foot prostheses that behave as a spring or controlled damper, and therefore cannot fully replace the function of the missing limb. More recently, fully-powered devices have been proposed to more closely match the power generation ability of intact limbs. However, these fully-powered devices are significantly heavier than passive devices, thus increasing the stress on the socket-residual limb interface...
July 2017: IEEE ... International Conference on Rehabilitation Robotics: [proceedings]
https://www.readbyqxmd.com/read/28813631/rapid-and-targeted-introgression-of-fgr-gene-through-marker-assisted-backcrossing-in-rice-oryza-sativa-l
#3
Acga Cheng, Ismanizan Ismail, Mohamad Osman, Habibuddin Hashim, Nur Samahah Mohd Zainual
While it is crucial for developing countries like Malaysia to achieve self-sufficiency in rice (Oryza sativa L.), it is equally critical to be able to produce high-quality rice, specifically fragrant rice, which demands are often met through importation. The present study was aimed at developing high-yielding fragrant rice, in a timely and cost-effective manner. A marker-assisted backcross (MABC) approach was optimised to introgress the fragrance gene (fgr) into two high-yielding Malaysian varieties; MR84 and MR219, within two years utilising less than fifty molecular markers...
August 16, 2017: Genome Génome / Conseil National de Recherches Canada
https://www.readbyqxmd.com/read/28813345/choking-under-pressure-theoretical-models-and-interventions
#4
REVIEW
Christopher Mesagno, Juergen Beckmann
In sport, choking under pressure is a major concern for athletes, coaches and sport psychologists because athletes fail to meet self-imposed performance expectations in critical situations (when it counts the most), which is devastating and embarrassing. Researchers have debated choking under pressure definitions, identified personality characteristics that exacerbate choking outcomes, and examined models to determine mechanisms for choking. Based on these investigations, several interventions to prevent choking have been developed and tested...
August 2017: Current Opinion in Psychology
https://www.readbyqxmd.com/read/28812982/quantitative-criteria-to-benchmark-new-and-existing-bio-inks-for-cell-compatibility
#5
Karen Dubbin, Anthony Tabet, Sarah Heilshorn
Recent advancements in 3D bioprinting have led to the fabrication of more complex, more precise, and larger printed tissue constructs. As the field continues to advance, it is critical to develop quantitative benchmarks to compare different bio-inks for key cell-biomaterial interactions, including (1) cell sedimentation within the ink cartridge, (2) cell viability during extrusion, and (3) cell viability after ink curing. Here we develop three simple protocols for quantitative analysis of bio-ink performance...
August 16, 2017: Biofabrication
https://www.readbyqxmd.com/read/28812871/high-performance-porous-molybdenum-oxynitride-based-fiber-supercapacitors
#6
Dan Ruan, Rui Lin, Kui Jiang, Xiang Yu, Yaofeng Zhu, Yaqin Fu, Zilong Wang, He Yan, Wenjie Mai
Scalable manufacturing of flexible, fiber-shaped energy storage devices has enabled great technological advances in wearable and portable technology. Replacing inefficient oxides with inexpensive and high-performance oxynitrides with more favourable 3D structures is critical if the practical applications of these technologies are to be realised. Here we developed a facile and controllable approach for the synthesis of 3D porous micropillars of molybdenum oxynitride, which exhibit high conductivity, robust stability and excellent energy storage properties...
August 16, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28812457/from-half-dead-to-being-free-resistance-to-hiv-stigma-self-disclosure-and-support-for-pmtct-hiv-care-among-couples-living-with-hiv-in-kenya
#7
Sydney A Spangler, Lisa L Abuogi, Eliud Akama, Elizabeth A Bukusi, Anna Helova, Pamela Musoke, Wafula Z Nalwa, Thomas A Odeny, Maricianah Onono, Iris Wanga, Janet M Turan
In sub-Saharan Africa, self-disclosure of HIV-positive status may be a pivotal action for improving access to prevention of mother-to-child transmission services. However, understanding of HIV stigma and disclosure, and their effects on demand for care remains incomplete - particularly in the current context of new antiretroviral therapy guidelines. The purpose of this study was to explore these issues among self-disclosed couples living in southwest Kenya. We conducted 38 in-depth interviews with HIV-positive pregnant or postpartum women and their male partners...
August 16, 2017: Culture, Health & Sexuality
https://www.readbyqxmd.com/read/28811509/determining-causal-mirnas-and-their-signaling-cascade-in-diseases-using-an-influence-diffusion-model
#8
Joseph J Nalluri, Pratip Rana, Debmalya Barh, Vasco Azevedo, Thang N Dinh, Vladimir Vladimirov, Preetam Ghosh
In recent studies, miRNAs have been found to be extremely influential in many of the essential biological processes. They exhibit a self-regulatory mechanism through which they act as positive/negative regulators of expression of genes and other miRNAs. This has direct implications in the regulation of various pathophysiological conditions, signaling pathways and different types of cancers. Studying miRNA-disease associations has been an extensive area of research; however deciphering miRNA-miRNA network regulatory patterns in several diseases remains a challenge...
August 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28810976/women-s-health-knowledge-and-skills-among-transitional-year-internship-trained-military-medical-officers-serving-as-independent-health-care-providers
#9
Ryan J Heitmann, Crystal B Hammons, Alison L Batig
BACKGROUND: Women comprise 14.5% of active duty service members. Delivery of women's health services is a critical component to personal, medical, and mission readiness. Our objective was to evaluate the knowledge, skills, and practices pertaining to basic elements of women's/reproductive health issues among transitional internship-trained general medical officers in the Army, Navy, and Air Force. MATERIALS AND METHODS: This is a cross-sectional survey study of transitional internship-trained graduates from 2012 to 2015 who transitioned to an operational assignment as an independent provider after internship graduation...
July 2017: Military Medicine
https://www.readbyqxmd.com/read/28810974/factors-affecting-organizational-commitment-in-navy-corpsmen
#10
Stephanie Booth-Kewley, Renée G Dell'Acqua, Cynthia J Thomsen
BACKGROUND: Organizational commitment is a psychological state that has a strong impact on the likelihood that employees will remain with an organization. Among military personnel, organizational commitment is predictive of a number of important outcomes, including reenlistment intentions, job performance, morale, and perceived readiness. Because of the unique challenges and experiences associated with military service, it may be that organizational commitment is even more critical in the military than in civilian populations...
July 2017: Military Medicine
https://www.readbyqxmd.com/read/28810846/personality-traits-and-suicide-attempts-with-and-without-psychiatric-disorders-analysis-of-impulsivity-and-neuroticism
#11
Bo Bi, Wei Liu, Die Zhou, Xu Fu, Xiaoxia Qin, Jiali Wu
BACKGROUND: There is a critical need for empirical data concerning the association of personality traits and attempted suicide with and without psychiatric disorders in mainland China. The objective of the present study is to provide such data by determining the prevalence of psychiatric disorders and analyzing the levels of impulsivity and neuroticism among people who have attempted suicide, and to examine the association between these personality traits and suicide attempt in people with or without psychiatric disorders...
August 15, 2017: BMC Psychiatry
https://www.readbyqxmd.com/read/28810800/confinement-curvature-and-attractive-interaction-effects-on-polymer-surface-adsorption
#12
Wei Chien, Yeng-Long Chen
We investigate the conformation and dynamics of a semi-flexible polymer near an attractive plane or a cylindrical post using Langevin dynamics. We characterize the transition from the desorbed to absorbed state and quantify how absorption depends on the attraction interaction, polymer molecular weight, polymer flexibility, intra-polymer interaction, and micro-confinement. We find that the critical point of adsorption for ideal flexible polymers only weakly depends on confinement. However, the critical point of adsorption increases significantly for self-avoiding flexible polymers and under confinement, deviating from scaling theory predictions...
August 14, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28810375/processes-of-change-in-quality-of-life-weight-self-stigma-body-mass-index-and-emotional-eating-after-an-acceptance-mindfulness-and-compassion-based-group-intervention-kg-free-for-women-with-overweight-and-obesity
#13
Lara Palmeira, Marina Cunha, José Pinto-Gouveia
This study examined the effectiveness of Kg-Free: an acceptance-, mindfulness- and compassion-based group intervention for women with overweight and obesity at post-treatment and 3-month follow-up and explored the psychological processes that underlie changes in quality of life, weight self-stigma, body mass index and emotional eating at post-treatment. Overall, 53 women completed Kg-Free. At post-treatment and 3-month follow-up, participants reported increased quality of life, mindfulness and self-compassion abilities and decreased weight self-stigma, emotional eating, shame, weight-related experiential avoidance, self-criticism and body mass index...
January 1, 2017: Journal of Health Psychology
https://www.readbyqxmd.com/read/28809986/static-and-dynamic-hidden-symmetries-of-icosahedral-viral-capsids
#14
Sergey B Rochal, Olga V Konevtsova, Vladimir L Lorman
Viral shells self-assemble from identical proteins, which tend to form equivalent environments in the resulting assembly. However, in icosahedral capsids containing more than 60 proteins, they are enforced to occupy not only the symmetrically equivalent locations but also the quasi-equivalent ones. Due to this important fact, static and dynamic symmetries of viral shells can include additional hidden components. Here, developing the Caspar and Klug ideas concerning the quasi-equivalence of protein environments, we derive the simplest hexagonal tilings, that in principle could correspond to the local protein order in viral shells, and apply the resulting theory to nucleocytoplasmic large dsDNA viruses...
August 15, 2017: Nanoscale
https://www.readbyqxmd.com/read/28809718/integration-of-semantic-and-episodic-memories
#15
Adrian Horzyk, Janusz A Starzyk, James Graham
This paper describes the integration of semantic and episodic memory (EM) models and the benefits of such integration. Semantic memory (SM) is used as a foundation of knowledge and concept learning, and is needed for the operation of any cognitive system. EM retains personal experiences stored based on their significance--it is supported by the SM, and in return, it supports SM operations. Integrated declarative memories are critical for cognitive system development, yet very little research has been done to develop their computational models...
August 11, 2017: IEEE Transactions on Neural Networks and Learning Systems
https://www.readbyqxmd.com/read/28808247/social-learning-promotes-nicotine-self-administration-by-facilitating-the-extinction-of-conditioned-aversion-in-isogenic-strains-of-rats
#16
Wenyan Han, Tengfei Wang, Hao Chen
Both social environment and genetic factors are critical for smoking initiation and nicotine addiction. We reported that rats developed conditioned flavor (i.e., taste and odor) aversion to intravenously self-administered (IVSA) nicotine, and that social learning promoted nicotine IVSA with flavor cues. We thus tested the hypothesis that socially acquired nicotine IVSA is a heritable trait by using female rats of six inbred strains and six F1 hybrids. Each strain was tested for 10 daily IVSA sessions. We found that the intake of nicotine (15 and 30 μg/kg/inf) varied among these strains by 33...
August 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28807952/emerging-role-of-hpv-self-sampling-in-cervical-cancer-screening-for-hard-to-reach-women-focused-literature-review
#17
REVIEW
Tina R Madzima, Mandana Vahabi, Aisha Lofters
OBJECTIVE: To provide a focused critical review of the literature on the acceptability, feasibility, and uptake of human papillomavirus (HPV) self-sampling among hard-to-reach women. QUALITY OF EVIDENCE: A focused search to obtain relevant literature published in English between 1997 and 2015 was done using PubMed and EMBASE using search terms including HPV self-test or HPV self-sample or HPV kit in combination with acceptability or feasibility. Only studies that focused on never-screened or underscreened populations were included in this review...
August 2017: Canadian Family Physician Médecin de Famille Canadien
https://www.readbyqxmd.com/read/28807938/s100a4-is-a-biomarker-and-regulator-of-glioma-stem-cells-that-is-critical-for-mesenchymal-transition-in-glioblastoma
#18
Kin-Hoe Chow, Hee Jung Park, Joshy George, Keiko Yamamoto, Andrew D Gallup, Joel H Graber, Yuanxin Chen, Wen Jiang, Dennis Steindler, Eric G Neilson, Betty Y S Kim, Kyuson Yun
Glioma stem cells (GSCs) and epithelial-mesenchymal transition (EMT) are strongly associated with therapy resistance and tumor recurrence, but the underlying mechanisms are incompletely understood. Here we show that S100A4 is a novel biomarker of GSCs. S100A4+ cells in gliomas are enriched with cancer cells that have tumor-initiating and sphere-forming abilities, with the majority located in perivascular niches where GSCs are found. Selective ablation of S100A4-expressing cells was sufficient to block tumor growth in vitro and in vivo...
August 14, 2017: Cancer Research
https://www.readbyqxmd.com/read/28807690/synergistic-effect-of-quercetin-and-ph-responsive-deae-chitosan-carriers-as-drug-delivery-system-for-breast-cancer-treatment
#19
Rafael de Oliveira Pedro, Francisco M Goycoolea, Susana Pereira, Carla C Schmitt, Miguel G Neumann
Amphiphilic chitosans, which may self-assemble in aqueous solution to form nanoaggregates with different conformations depending to the environmental pH, can be used as drug transport and delivery agents, when the target pH differs from the delivery medium pH. In this study, quercetin, a bioactive flavonoid, was encapsulated in a pH-responsive system based on amphiphilic chitosan. The hydrophilic reagent 2-chloro-N,N-diethylethylamine hydrochloride (DEAE), also known to inhibit the proliferation of cancer cells, was used as a grafting agent...
August 11, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28807140/acute-psychological-trauma-in-the-critically-ill-patient-and-family-perspectives
#20
Volha Dziadzko, Mikhail A Dziadzko, Margaret M Johnson, Ognjen Gajic, Lioudmila V Karnatovskaia
OBJECTIVE: Post-intensive care syndrome (PICS), which encompasses profound psychological morbidity, affects many survivors of critical illness. We hypothesize that acute psychological stress during the intensive care unit (ICU) confinement likely contributes to PICS. In order to develop strategies that mitigate PICS associated psychological morbidity, it is paramount to first characterize acute ICU psychological stress and begin to understand its causative and protective factors. METHODS: A structured interview study was administered to adult critical illness survivors who received ≥48h of mechanical ventilation in medical and surgical ICUs of a tertiary care center, and their families...
July 2017: General Hospital Psychiatry
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