Results 21 to 30 of about 1,654,677 (246)

The feasibility study of stress position device simulating standing weight-bearing applied in computed tomography examination

Journal of Orthopaedic Surgery, 2023
Background In order to simulate weight-bearing Computed Tomography (CT) examination, this study designed a simple stress position device. By analyzing the relevant data of stress position footprints and weight-bearing position footprints, the feasibility
Qiang Zhao, Yuhao Zhang, Xiaohui Gu
doaj   +1 more source

Numerical calibration for fracture parameters of three-point bending semi-circular specimens

Frontiers in Earth Science
This study aims to refine the fracture characterization of three-point bending semi-circular specimens used in rock fracture toughness assessments. The primary objective is to improve the accuracy of such evaluations by developing numerical simulations ...
Jun Wang, Haoyi Wang, Haoyi Wang, Zongquan Yao, Zongquan Yao, Qi Li, Chaodong Wu   +6 more
doaj   +1 more source

In-plane mixed-mode brittle fracture assessment of Harsin marble using HCSP specimen

Fracture and Structural Integrity
The primary objective of this manuscript is studying the effect of T-stress term (T) on the crack propagation angle (CPA) and fracture toughness of in-plane mixed mode loading by utilizing a generalized form of minimum strain energy density (SED ...
Z. Moqadaszadeh, H. Salavati, M. Rashidi Moghaddam   +2 more
doaj   +1 more source

Exploring the Impact of Salicylic Acid and Farmyard Manure on Soil Rhizospheric Properties and Cadmium Stress Alleviation in Maize (Zea mays L.)

Plants, 2023
Cadmium (Cd) pollution is a growing environmental problem that negatively impacts plant growth and development, particularly in maize. In this research, the impact of farmyard manure (FYM) and salicylic acid (SA) on rhizospheric characteristics and the ...
Hafiz Haider Ali, Nimra Shehzadi, Muhammad Saqlain Zaheer, Mahmoud F. Seleiman, Khalid J. Aldhuwaib, Waqas ud Din Khan, Ali Raza   +6 more
doaj   +1 more source

Multimodal prediction of future depressive symptoms in adolescents

BMC Psychiatry
Background Depression rates surge during adolescence. Early identification of youth at increased risk for depression is crucial for timely intervention and, ideally, prevention.
Linshanshan Wang, Ningxuan Zhou, Nigel M. Jaffe, Kristina Pidvirny, Anna O. Tierney, Hadar B. Fisher, Francesca Morfini, Erika E. Forbes, Diego A. Pizzagalli, Tianxi Cai, Christian A. Webb   +10 more
doaj   +1 more source

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

FEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

Effects of Pulsed Magnetic Fields of Different Intensities on Dislocation Density, Residual Stress, and Hardness of Cr4Mo4V Steel

Crystals, 2020
To study the effects of pulsed magnetic fields of different intensities on the dislocation density, residual stress, and hardness of Cr4Mo4V steel, magnetic treatment is conducted at 0, 1.0, 1.3, 1.5, 2.0, and 2.5 T.
Mingdong Hou, Kejian Li, Xiaogang Li, Xu Zhang, Shaoshi Rui, Yao Wu, Zhipeng Cai   +6 more
doaj   +1 more source

Mapping the evolution of mitochondrial complex I through structural variation

FEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin, Tingting Chen, James A. Letts   +2 more
wiley   +1 more source

Variation of stress intensity factor and elastic T-stress along the crack-front in finite thickness plates [PDF]

Fracture and Structural Integrity, 2009
Non-singular terms in the series expansion of the elastic crack-tip stress fields, commonly referred to as the T-stress. The T-stress is as an additional stress field characterizing parameter to stress intensity factor (K) in the analysis of cracked ...
S. K. Kudari, K. G. Kodancha
doaj  

Correlation of occupational stress with depression, anxiety, and sleep in Korean dentists: cross-sectional study

BMC Psychiatry, 2017
Background This study aimed to investigate the degree of occupational stress and the clinical mental state of dentists. In addition, we investigated the correlation of occupational stress with depression, anxiety, and sleep among dentists in Korea ...
Kyung-Won Song, Won-Seok Choi, Hee-Jung Jee, Chi-Sung Yuh, Yong-Ku Kim, Leen Kim, Heon-Jeong Lee, Chul-Hyun Cho   +7 more
doaj   +1 more source