Results 91 to 100 of about 24,380 (286)

The influence of blade curvature and helical blade twist on the performance of a vertical-axis wind turbine [PDF]

, 2010
Accurate aerodynamic modeling of vertical-axis wind turbines poses a significant challenge, but is essential if the performance of such turbines is to be predicted reliably.
Brown, R.E., Fletcher, Timothy M., Scheurich, Frank   +2 more
core  

A two‐sample Mendelian randomization study and mediation analysis exploring the link between cathepsins and epilepsy

Epilepsia Open, EarlyView.
Abstract Objective This study aims to investigate the causal relationship between cathepsins and epilepsy, using Mendelian randomization (MR) and mediation analysis. Methods Publicly accessible summary statistics on epilepsy were obtained from FinnGen and the International League Against Epilepsy Consortium.
Huaiyu Sun, Di Ma, Wuqiong Zhang, Shuai Hou, Zhiqing Chen, Xuewei Li, Hongmei Meng, Daguang Zhang   +7 more
wiley   +1 more source

Development of a Novel Modified Mean‐Line Approach for Performance Prediction of Axial Compressors

Energy Science &Engineering, EarlyView.
ABSTRACT There is significant importance in accurate prediction of axial flow compressor characteristics at different conditions. Different techniques and models have been proposed for performance prediction of axial compressors. Because of its lower computational cost and high speed the meanline algorithm has been widely applied in preliminary design ...
Sina Hassanlue, Mohammad Alhuyi Nazari, Mohammadreza Pakatchian   +2 more
wiley   +1 more source

Opium trade and use during the Late Bronze Age: Organic residue analysis of ceramic vessels from the burials of Tel Yehud, Israel

Archaeometry, EarlyView., 2022
Abstract Organic residue analysis was conducted on various vessels from burials at Tel Yehud, Israel. The analyses led to new reliable evidence for the presence of opioid alkaloids and their decomposition products. This research revitalizes a decades‐old discussion on the presence and function of the opium trade across a cultural region of utmost ...
Vanessa Linares, Eriola Jakoel, Ron Be’eri, Oded Lipschits, Ronny Neumann, Yuval Gadot   +5 more
wiley   +1 more source

Spike Stall Precursor Detection in a Single-Stage Axial Compressor: A Data-Driven Dynamic Modeling Approach

Machines
Operational safety and fuel efficiency are critical, yet often conflicting, objectives in modern civil get engine designs. Optimal efficiency operating conditions are typically close to unsafe regions, such as compressor stalls, which can cause severe ...
Anish Thapa, Jichao Li, Marco P. Schoen
doaj   +1 more source

Study of Convective Flow Effects in Endwall Casing Treatments in Transonic Compressor Rotors [PDF]

, 2012
The unsteady convective flow effects in a transonic compressor rotor with a circumferential-groove casing treatment are investigated in this paper. Experimental results show that the circumferential-groove casing treatment increases the compressor stall ...
Hah, Chunill, Mueller, Martin W., Schiffer, Heinz-Peter   +2 more
core   +1 more source

Research on the Mechanism of Sand Bridge Stuck Drill in Deep Coal and Rock Gas Horizontal Wells

Energy Science &Engineering, EarlyView.
Accounting for wellbore collapse debris and the bulldozer effect, this study develops models for permeable and impermeable sand bridge sticking in deep CBM horizontal wells, deriving resistance and volume formulations. Validated in Changqing, results show impermeable bridges dominate; controls (fluid optimization, staged drilling, circulation, speed ...
Cheng Hui, Yong Ouyang, Zhifeng Duan, Xiaoyue Xu, Yuxiang Teng, Mingyang Liu, Hui Zhang, Long Chen   +7 more
wiley   +1 more source

Endometrial Stromal Cell Senescence: A Non‐Negligible Factor in Recurrent Pregnancy Loss

iMetaMed, EarlyView.
As populations age, links between female reproductive aging and infertility are increasingly evident. Cellular senescence, characterized by near‐irreversible cell‐cycle arrest and accumulation of damage, can impair tissue function. In the endometrium, aberrant senescence of endometrial stromal cells (EnSCs) may compromise receptivity, hinder embryo ...
Shuang Wu, Cenlan Bu, Qinzheng Xu, Xi Cheng, Junrong Zhang, Jinling Chen, Yun‐Zhao Xu   +6 more
wiley   +1 more source

Does Mobile Money Adoption Improve Dietary Quality? Assessing Household and Individual Level Impacts in Cameroon

Journal of International Development, EarlyView.
ABSTRACT Mobile money—a digital financial service—has proliferated in many developing countries. Owing to its ability to reduce transaction costs and allow even the poor to be financially included, it has been widely adopted. While a growing body of literature has examined its welfare effects, its effects on diet quality of households and individuals ...
Francis E. Ndip, Perez L. Kemeni Kambiet   +1 more
wiley   +1 more source

Experimental rotordynamics and flow visualization approach for periodically reversed flows of a Francis - Type Pump - Turbine in generating mode at off - design operating conditions [PDF]

, 2014
A non-conventional tufting visualization method along with an image processing development and specific applied technique adapted to the flow conditions is proposed and implemented on a reduced scale model of a Francis-type reversible pump-turbine in ...
Guzmán Díaz, Sebastián
core