keyword
https://read.qxmd.com/read/38536784/muscle-strength-during-pregnancy-and-postpartum-in-adolescents-and-adults
#1
JOURNAL ARTICLE
Maria Luiza da Silva Santos, Sabrina Gabrielle Gomes Fernandes Macêdo, Juliana Fernandes, Catherine M Pirkle, Saionara M A Câmara
Adolescent childbirth is associated with worse physical function over the long-term. Differential loss of muscle strength during pregnancy and postpartum for adolescents compared to adults may be one explanation for this, but research examining these differences is lacking. The objective of this study as to assess hand grip strength and hip adduction muscle strength in adolescents and adults during pregnancy and postpartum. A prospective cohort study was carried out with adolescent (13 to 18 years) and adult (23 to 28 years) primigravid women...
2024: PloS One
https://read.qxmd.com/read/38536699/adaptive-synaptic-scaling-in-spiking-networks-for-continual-learning-and-enhanced-robustness
#2
JOURNAL ARTICLE
Mingkun Xu, Faqiang Liu, Yifan Hu, Hongyi Li, Yuanyuan Wei, Shuai Zhong, Jing Pei, Lei Deng
Synaptic plasticity plays a critical role in the expression power of brain neural networks. Among diverse plasticity rules, synaptic scaling presents indispensable effects on homeostasis maintenance and synaptic strength regulation. In the current modeling of brain-inspired spiking neural networks (SNN), backpropagation through time is widely adopted because it can achieve high performance using a small number of time steps. Nevertheless, the synaptic scaling mechanism has not yet been well touched. In this work, we propose an experience-dependent adaptive synaptic scaling mechanism (AS-SNN) for spiking neural networks...
March 27, 2024: IEEE Transactions on Neural Networks and Learning Systems
https://read.qxmd.com/read/38536440/circulating-catecholamines-endothelin-1-and-nitric-oxide-releases-do-not-explain-the-preserved-fmd-following-acute-resistance-exercise-in-strength-trained-men
#3
JOURNAL ARTICLE
Takuma Morishima, Nobukazu Kasai
PURPOSE: Acute resistance exercise decreases endothelial function in sedentary individuals but not in strength-trained (ST) individuals. However, the underlying mechanism(s) of vascular protection in ST individuals remains unclear. Herein, we compared catecholamines, endothelin-1 (ET-1), and nitric oxide (NOx) releases after acute resistance exercise between sedentary and ST individuals. METHODS: The untrained (UT) group comprised 12 male individuals with no regular training, while the ST group comprised 12 male individuals...
March 27, 2024: European Journal of Applied Physiology
https://read.qxmd.com/read/38535745/the-effect-of-oral-adenosine-triphosphate-atp-supplementation-on-anaerobic-exercise-in-healthy-resistance-trained-individuals-a-systematic-review-and-meta-analysis
#4
REVIEW
Roberto González-Marenco, Ivonne Azeret Estrada-Sánchez, Martha Medina-Escobedo, Rodolfo Chim-Aké, Roberto Lugo
Adenosine triphosphate (ATP) is an energy and signaling molecule. It is synthesized endogenously and can be taken as an oral supplement. This review aimed to identify the effects of oral ATP supplementation on anaerobic exercise in healthy resistance-trained adults. A systematic review and meta-analysis were performed based on the Preferred Reporting Items of Systematic Reviews and Meta-Analysis (PRISMA) criteria. The inclusion criteria were articles published from 2000 to 2022, with anaerobic variables (maximal strength, maximum repetitions, and maximum anaerobic power) measurable in healthy adults with experience in resistance training, only randomized placebo-controlled clinical trials (RCTs), and with the acute (a single dose 30 min to 24 h before the tests) and/or chronic (>1 day) oral supplementation of ATP...
March 14, 2024: Sports
https://read.qxmd.com/read/38535682/high-barrier-properties-of-butyl-rubber-composites-containing-liquid-rubber-and-graphene-oxide
#5
JOURNAL ARTICLE
Jiaye Li, Zhanghao Yang, Shanjun Hu, Xianhong Huang, Stephen Jerrams, Shui Hu, Li Liu, Shipeng Wen
The high elasticity and excellent gas barrier properties of rubber composites make them irreplaceable in the field of sealing. Constructing a complicated barrier network to reduce free volume is crucial to improving gas barrier properties. In this research, liquid acrylonitrile-butadiene rubber/γ-Methacryloxypropyl trimethoxy silane (KH570) modified graphene oxide/butyl rubber composites (LNBR/KGO/IIR) were fabricated. A KGO lamellar network was constructed to resist gas diffusion in the IIR matrix. Meanwhile, LNBR macromolecules further occupied the free volume inside the IIR composites, thereby maximizing the retardation of the path of small molecule gas permeation...
March 18, 2024: Nanomaterials
https://read.qxmd.com/read/38535392/the-l1014f-knockdown-resistance-mutation-is-not-a-strong-correlate-of-phenotypic-resistance-to-pyrethroids-in-florida-populations-of-culex-quinquefasciatus
#6
JOURNAL ARTICLE
Alden S Estep, Neil D Sanscrainte, Jason Stuck, Isik Unlu, Agne Prasauskas, Stephanie J Mundis, Nicholas Cotter, Ana L Romero-Weaver, Troy J Fedirko, Natalie L Kendziorski, Kyle J Kosinski, Daviela Ramirez, Eva A Buckner
Culex quinquefasciatus is an important target for vector control because of its ability to transmit pathogens that cause disease. Most populations are resistant to pyrethroids and often to organophosphates, the two most common classes of active ingredients used by public health agencies. A knockdown resistance ( kdr ) mutation, resulting in an amino acid change from a leucine to phenylalanine in the voltage gated sodium channel, is one mechanism contributing to the pyrethroid resistant phenotype. Enzymatic resistance has also been shown to play a very important role...
March 15, 2024: Insects
https://read.qxmd.com/read/38534623/investigating-texture-and-freeze-thaw-stability-of-cold-set-gel-prepared-by-soy-protein-isolate-and-carrageenan-compounding
#7
JOURNAL ARTICLE
Zhuying Wang, Zhenhai Yu, Shuanghe Ren, Jun Liu, Jing Xu, Zengwang Guo, Zhongjiang Wang
In this study, the purpose was to investigate the effects with different concentrations of carrageenan (CG, 0-0.30%) on the gel properties and freeze-thaw stability of soy protein isolate (SPI, 8%) cold-set gels. LF-NMR, MRI, and rheology revealed that CG promoted the formation of SPI-CG cold-set gel dense three-dimensional network structures and increased gel network cross-linking sites. As visually demonstrated by microstructure observations, CG contributed to the formation of stable SPI-CG cold-set gels with uniform and compact network structures...
March 18, 2024: Gels
https://read.qxmd.com/read/38534165/super-flexible-water-proof-actuators
#8
JOURNAL ARTICLE
Wei Liu, Xi Yang, Guilong Yan, Li Wang, Jingjuan Lai, Zhenyu Li, Chunxia Zhao, Dong Xiang, Hui Li, Yuanpeng Wu
Humidity-responsive materials hold broad application prospects in sensing, energy production, and other fields. Particularly, humidity-sensitive, flexibility, and water resistance are pivotal factors in the development of optimized humidity-responsive materials. In this study, hydrophobic linear polyurethane and hydrophilic 4-vinylphenylboronic acid (4-VPBA) form a semi-intercross cross-linking network. This copolymer of polyurethane exhibits excellent humidity-sensitive, mechanical properties, and water resistance...
March 27, 2024: Small
https://read.qxmd.com/read/38534071/study-of-hydration-repulsion-of-zwitterionic-polymer-brushes-resistant-to-protein-adhesion-through-molecular-simulations
#9
JOURNAL ARTICLE
Xinzhong Song, Jia Man, Yinghua Qiu, Jiali Wang, Ruijian Li, Yongqi Zhang, Guanghui Cui, Jianyong Li, Jianfeng Li, Yuguo Chen
The fabrication of antifouling zwitterionic polymer brushes represents a leading approach to mitigate nonspecific adhesion on the surfaces of medical devices. This investigation seeks to elucidate the correlation between the material composition and structural attributes of these polymer brushes in preventing protein adhesion. To achieve this goal, we modeled three different zwitterionic brushes, namely, carboxybetaine methacrylate (CBMA), sulfobetaine methacrylate (SBMA), and (2-(methacryloyloxy)ethyl)-phosphorylcholine (MPC)...
March 27, 2024: ACS Applied Materials & Interfaces
https://read.qxmd.com/read/38533529/adar2-deficiency-ameliorates-non-alcoholic-fatty-liver-disease-and-muscle-atrophy-through-modulating-serum-amyloid-a1
#10
JOURNAL ARTICLE
Mei-Lang Kung, Tai-Hua Yang, Chia-Chi Lin, Jia-Yun Ho, Tzu-Chi Hung, Chih-Hsiang Chang, Kuan-Wen Huang, Chien-Chin Chen, Yun-Wen Chen
BACKGROUND: Non-alcoholic fatty liver disease (NAFLD) is the most common cause of chronic liver disease worldwide. Sarcopenia is a syndrome characterized by progressive and generalized loss of skeletal muscle mass and strength, which is commonly associated with NAFLD. Adenosine-to-inosine editing, catalysed by adenosine deaminase acting on RNA (ADAR), is an important post-transcriptional modification of genome-encoded RNA transcripts. Three ADAR gene family members, including ADAR1, ADAR2 and ADAR3, have been identified...
March 27, 2024: Journal of Cachexia, Sarcopenia and Muscle
https://read.qxmd.com/read/38533082/waste-natural-fibers-for-polymer-toughening-and-biodegradability-of-epoxy-based-polymer-composite-through-toughness-and-thermal-analysis
#11
JOURNAL ARTICLE
Mohammad Salman Haque, M A Islam
Polymeric materials are being increasingly used to replace many metallic components due to their beneficial properties such as higher strength-to-weight ratio and corrosion resistance. However, the widespread use of polymers poses a risk to the environment as they are not biodegradable. The addition of the waste jute fiber and sawdust fiber as reinforcement to the epoxy resin improved its toughness and induced the biodegradability of the polymer. To examine the effect of the jute fiber and sawdust fiber on biodegradability, the composites were then kept in the drainage system for one year, and the impact energy and fracture morphology of the as-cast and weathered samples were examined using a drop ball impact test and a Charpy impact test...
March 30, 2024: Heliyon
https://read.qxmd.com/read/38533006/reduction-of-polystyrene-polyurethane-plastic-wastes-from-the-environment-into-binders-for-water-resistant-emulsion-paints
#12
JOURNAL ARTICLE
Sunday A Osemeahon, Ayodele Akinterinwa, Esther Fasina, Fartisincha P Andrew, Muhammed H Shagal, Semiu A Kareem, Usaku Reuben, Patience U Onyebuchi, Olubukola R Adelagun, David Esenowo
Waste management is fundamental to resource and environmental sustainability. Expanded polystyrene (EPS) and polyurethane (PU) waste plastics were recycled and applied as binder in emulsion paint formulation. The recycled polystyrene (rPS) and polyurethane (rPU) were blended into composite resins, where toluene was used as the solvent. The blends of rPS and rPU were optimized, while some physicochemical properties of the composite blends (rPS/PU) were evaluated. The results showed that the incorporation of rPU into rPS increased the viscosity (1818 mPa-3924 mPa), rate of gelation (dry-to-touch time: 15 min-0...
March 30, 2024: Heliyon
https://read.qxmd.com/read/38532601/a-detailed-study-on-using-novel-lm-25-aluminium-alloy-hybrid-metal-matrix-nanocomposite-for-nuclear-applications
#13
JOURNAL ARTICLE
S C V Ramana Murty Naidu, Suresh V, P Prabhu, Beporam Iftekhar Hussain, Abdul Rab Asary, G Padmanaban, M Srinivasnaik, K P Yuvaraj
AIM: This article describes the use of graphite(Gr) and boron carbide (B4C) as multiple nanoparticle reinforcements in LM25 aluminum alloy. Because boron carbide naturally absorbs neutron radiation, aluminium alloy reinforced with boron carbide metal matrix composite has gained interest in nuclear shielding applications. The primary goal of the endeavor is to create composite materials with high wear resistance, high microhardness, and high ultimate tensile strength for use in nuclear applications...
March 26, 2024: Recent Patents on Nanotechnology
https://read.qxmd.com/read/38532530/effects-of-eccentric-versus-concentric-strengthening-in-patients-with-subacromial-pain-syndrome-a-randomized-controlled-trial
#14
JOURNAL ARTICLE
Damla Karabay, Sevgi Sevi Yeşilyaprak, Mehmet Erduran, Cem Ozcan
BACKGROUND: Subacromial pain syndrome (SPS) is the most common cause of shoulder pain. Therapeutic exercise is the first-line treatment for SPS; however, the ideal exercise type remains unclear. Here, we compared the effects of eccentric and concentric strengthening in patients with SPS. HYPOTHESIS: Adding isolated eccentric strengthening to a multimodal physiotherapy program (MPP) would lead to greater improvements in outcomes compared with either MPP alone or adding isolated concentric strengthening to the MPP...
March 26, 2024: Sports Health
https://read.qxmd.com/read/38532413/influence-of-screw-channel-angulation-on-reverse-torque-value-and-fracture-resistance-in-monolithic-zirconia-restorations-after-thermomechanical-cycling-an-in-vitro-study
#15
JOURNAL ARTICLE
Amir Alireza Khaledi, Shouka Shalileh, Maryam Hejazi, Rashin Giti
BACKGROUND: While the concept of angled screw channels has gained popularity, there remains a scarcity of research concerning the torque loss and fracture strength of monolithic zirconia restorations with various screw channel angulations when exposed to thermomechanical cycling. This in-vitro study aimed to evaluate the reverse torque value and fracture resistance of one-piece screw-retained hybrid monolithic zirconia restorations with angulated screw channels after thermomechanical cycling...
March 26, 2024: BMC Oral Health
https://read.qxmd.com/read/38532316/impact-of-resistance-exercise-on-patients-with-chronic-kidney-disease
#16
JOURNAL ARTICLE
Chong-Cheng Chen, Yue-Yang Huang, Hua-Zhang, Xia-Liu, Xue-Qin Li, Yan-Qiong Long, Zheng-Wen Chen, Tao Jin
BACKGROUND: Chronic kidney disease (CKD) has become an increasingly important public health disease with a high incidence rate and mortality. Although several studies have explored the effectiveness of resistance exercise in improving the prognosis of CKD patients, the number of studies is still limited and the results are still controversial. OBJECTIVES: We conducted this meta-analysis of randomized controlled trials (RCT) studies to evaluate the effectiveness of resistance exercise on CKD patients...
March 26, 2024: BMC Nephrology
https://read.qxmd.com/read/38531712/resilience-and-vulnerability-distinct-concepts-to-address-global-change-in-forests
#17
REVIEW
Judit Lecina-Diaz, Jordi Martínez-Vilalta, Francisco Lloret, Rupert Seidl
Resilience and vulnerability are important concepts to understand, anticipate, and manage global change impacts on forest ecosystems. However, they are often used confusingly and inconsistently, hampering a synthetic understanding of global change, and impeding communication with managers and policy-makers. Both concepts are powerful and have complementary strengths, reflecting their different history, methodological approach, components, and spatiotemporal focus. Resilience assessments address the temporal response to disturbance and the mechanisms driving it...
March 25, 2024: Trends in Ecology & Evolution
https://read.qxmd.com/read/38531014/unlocking-the-potential-of-porous-bi-2-te-3-based-thermoelectrics-using-precise-interface-engineering-through-atomic-layer-deposition
#18
JOURNAL ARTICLE
Seunghyeok Lee, Gwang Min Park, Younghoon Kim, So-Hyeon Lee, Sung-Jin Jung, Junpyo Hong, Sung-Chul Kim, Sung Ok Won, Albert S Lee, Yoon Jang Chung, Ju-Young Kim, Heesuk Kim, Seung-Hyub Baek, Jin-Sang Kim, Tae Joo Park, Seong Keun Kim
Porous thermoelectric materials offer exciting prospects for improving the thermoelectric performance by significantly reducing the thermal conductivity. Nevertheless, porous structures are affected by issues, including restricted enhancements in performance attributed to decreased electronic conductivity and degraded mechanical strength. This study introduces an innovative strategy for overcoming these challenges using porous Bi0.4 Sb1.6 Te3 (BST) by combining porous structuring and interface engineering via atomic layer deposition (ALD)...
March 26, 2024: ACS Applied Materials & Interfaces
https://read.qxmd.com/read/38529799/the-impact-of-inertial-exercises-performed-in-the-workplace-on-shoulder-muscles-strength-and-muscles-fatigue-resistance-in-women-with-disabilities
#19
JOURNAL ARTICLE
Alicja Naczk, Wioletta Brzenczek-Owczarzak, Zdzisław Adach, Piotr Gramza, Justyna Forjasz, Ewa Gajewska, Mariusz Naczk
BACKGROUND: Workers who do monotonous and repetitive work in a static position often complain about fatigue and decreased work efficiency. Some studies indicate that to improve muscle fatigue, resistance strength training can be used. MATERIAL AND METHODS: To investigate the effect of 4-week inertial training on shoulder muscles' strength and muscles' fatigue resistance 44 female workers with disabilities were examined. The participants were randomized into the training group (T) (N = 32) and the control group (C) (N = 12)...
March 26, 2024: Medycyna Pracy
https://read.qxmd.com/read/38529312/effect-of-high-intensity-circuit-training-on-muscle-mass-muscular-strength-and-blood-parameters-in-sedentary-workers
#20
JOURNAL ARTICLE
Sung-Yen Ho, Yu-Chun Chung, Huey-June Wu, Chien-Chang Ho, Hung-Ting Chen
BACKGROUND: The study aim was to investigate the effect of high intensity circuit training on body composition, muscular performance, and blood parameters in sedentary workers. METHODS: A total of 36 middle-aged sedentary female workers were randomly divided into high intensity circuit training (HICT) group, aerobic training (AT) group, and control (CON) group. The exercise training groups performed exercise three times per week for 8 weeks. In HICT, each session was 20-35 min with 2-3 rounds...
2024: PeerJ
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