Results 1 to 10 of about 466,925 (163)

Metformin, Oxidative Stress, and Infertility: A Way Forward [PDF]

open access: yesFrontiers in Physiology, 2018
Infertility is a significant public health problem and its diagnosis and treatment are stressful, invasive and costly. Impaired fecundity is a growing health concern worldwide. Fertility predominantly depends on the maintenance of the quantity and quality of the ovarian reserve, which is determined by the extrinsic and intrinsic factors.
Rehana Rehman   +2 more
doaj   +3 more sources

The Effect of Stress on Working Memory in Persons with Parkinson’s Disease [PDF]

open access: yesBrain Sciences
Background: In addition to motor symptoms, persons with Parkinson’s disease (PD) experience several non-motor symptoms with challenges in working memory being particularly common. These cognitive challenges may worsen under stress.
Andrew Zaman   +2 more
doaj   +2 more sources

Asymmetric effect of mechanical stress on the forward and reverse reaction catalyzed by an enzyme. [PDF]

open access: yesPLoS ONE, 2014
The concept of modulating enzymatic activity by exerting a mechanical stress on the enzyme has been established in previous work. Mechanical perturbation is also a tool for probing conformational motion accompanying the enzymatic cycle.
Collin Joseph   +3 more
doaj   +6 more sources

Patellar tendon stress between two variations of the forward step lunge

open access: yesJournal of Sport and Health Science, 2019
Background: Patellar tendinopathy (PT) or “jumper's knee” is generally found in active populations that perform jumping activities. Graded exposure of patellar tendon stress through functional exercise has been demonstrated to be effective for the ...
Matthew Zellmer   +4 more
doaj   +3 more sources

An Efficient Clamp to Reduce Switch Voltage Stress of Forward Converter

open access: yesThe Transactions of the Korean Institute of Power Electronics, 2016
In this study, an efficient clamp is proposed to reduce the switch voltage stress of a forward converter. The proposed clamp consists of a conventional LC snubber, a tertiary winding, and a diode. When the switch is turned OFF, the magnetizing inductor energy of the transformer is recovered directly into the flyback output, which is the tertiary ...
exaly   +3 more sources

Heterostructured materials: superior properties from hetero-zone interaction

open access: yesMaterials Research Letters, 2021
Heterostructured materials are an emerging class of materials with superior performances that are unattainable by their conventional homogeneous counterparts.
Yuntian Zhu   +12 more
doaj   +1 more source

Drain-Source Voltage-Controllable Three-Switch Active-Clamp Forward Converter for Wide Input/Output Voltage Applications

open access: yesMicromachines, 2022
Active-clamp forward converters are applied to various medium-capacity power systems because they have a relatively simple structure and are capable of zero-voltage switching.
Jeong-Woo Lim, Chong-Eun Kim
doaj   +1 more source

Forward Looking Banking Stress in EMU Countries [PDF]

open access: yesSSRN Electronic Journal, 2014
Based on contingent claims analysis, CCA, this paper tries to estimate the systemic risk build-up in the European Economic and Monetary Union, EMU countries using a market based measure distance-to-default, DtD. It analyzes the individual and aggregated series for a comprehensive set of banks in each eurozone country over the period 2004-Q4 to 2013-Q2.
Gómez-Puig, Marta   +2 more
openaire   +5 more sources

The Forward Testing Effect Is Resistant to Acute Psychosocial Retrieval Stress

open access: yesExperimental Psychology, 2022
Abstract: The forward testing effect refers to the finding that testing of previously studied information improves memory for subsequently studied newer information. Recent research showed that the effect is immune to acute psychosocial encoding/retrieval stress, i.e., stress that is induced before initial encoding.
Bernhard Pastötter   +3 more
openaire   +2 more sources

Patellofemoral Joint Loading During the Performance of the Forward and Side Lunge with Step Height Variations

open access: yesInternational Journal of Sports Physical Therapy, 2022
# Background Forward and side lunge exercises strengthen hip and thigh musculature, enhance patellofemoral joint stability, and are commonly used during patellofemoral rehabilitation and training for sport.
Rafael Escamilla   +8 more
doaj   +1 more source

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