Results 21 to 30 of about 13,274 (173)

Microstructural Evolution and Vacancy Defect Formation in Mn–Mo–Ni RPV Steel Under Low Cycle Fatigue: Insights From EBSD and PALS

open access: yesAdvanced Engineering Materials, EarlyView.
Low‐cycle fatigue damage in Mn–Mo–Ni reactor pressure vessel steel is examined using a combined electron backscatter diffraction and positron annihilation lifetime spectroscopy approach. The study correlates texture evolution, dislocation substructure development, and vacancy‐type defect formation across uniform, necked, and fracture regions, providing
Apu Sarkar   +2 more
wiley   +1 more source

Karl Popper and the Mechanisms of Hydrogen Embrittlement

open access: yesAdvanced Engineering Materials, EarlyView.
Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley   +1 more source

Comparative Study of Staging Rubber Band Ligation (RBL) and Hemorrhoidectomy in Treatment of Forth Degree Hemorrhoids [PDF]

open access: yesIranian Journal of Colorectal Research, 2013
Background Rubber band ligation is one of the most worldwide used treatments of hemorrhoids because of its effectiveness and low complication rate. Hemorrhoidectomy is the procedure of choice for treatment of grade four hemorrhoids, which is a painful ...
Mahmoud Aghaei   +5 more
doaj   +1 more source

Microstructure‐Controlled Crack Propagation and Fracture Resistance in MoSiBTiC Alloy Revealed by Multiscale Extended Finite Element Method Modeling

open access: yesAdvanced Engineering Materials, EarlyView.
A two‐dimensional multiscale finite element analysis framework was established for the first‐generation MoSiBTiC alloy, and the mechanical and fracture‐related parameters of the constituent phases were calibrated through experiments and simulations. The framework provides a basis for analyzing crack propagation behavior in its complex microstructure ...
Junfeng Du   +4 more
wiley   +1 more source

Association of constipation with suicidal ideation among US adults and the partial mediating role of depression

open access: yesScientific Reports
The association between constipation and suicidal ideation remains inadequately explored. This study aims to investigate the potential correlation between constipation and suicidal ideation in US adults, while assessing the mediating role of depression ...
Pengfei Wang   +7 more
doaj   +1 more source

Progress in the application of ablation therapy in the treatment of hemorrhoids

open access: yes结直肠肛门外科
The incidence of hemorrhoids is relatively high, and traditional surgical methods for hemorrhoids have disadvantages such as significant postoperative pain, high complication rates, decreased quality of life for patients, and prolonged recovery time. The
Lü Ya   +5 more
doaj   +1 more source

Slip Localization Intensification Mediated by Grain Boundary Sliding in a Polycrystalline Nickel‐Based Superalloy

open access: yesAdvanced Engineering Materials, EarlyView.
The temperature dependence of fatigue behavior in nickel‐based superalloys is investigated through high‐resolution measurements of plastic localization. While increasing temperature reduces localization and enhances fatigue performance in René 88DT, Inconel 718 exhibits a sharp degradation at intermediate temperature due to intensified slip ...
M. Calvat   +5 more
wiley   +1 more source

Influence of Scan Strategies in Electron Beam Powder Bed Fusion on Solidification, Microstructure, and High‐Temperature Compressive Properties of γ′‐Strengthened Inconel 738LC

open access: yesAdvanced Engineering Materials, EarlyView.
Experiments and thermophysical simulations were conducted to investigate the electron beam powder bed fusion electron beam (PBF‐EB/M) process for the γ′‐strengthened nickel‐based superalloy Inconel 738LC. The results demonstrate the impact of process‐induced microstructural variations on high‐temperature mechanical behavior, providing a basis for ...
Jan Niklas Petenati   +11 more
wiley   +1 more source

Hemorrhoids and pregnancy: modern ideas of treatment and prevention

open access: yesУчёные записки Санкт-Петербургского государственного медицинского университета им. Акад. И.П. Павлова, 2015
This article discusses issues related to the etiology, pathogenesis, clinical, prevention and treatment of hemorrhoids in pregnant and postpartum women.
S. V. Vasiliev   +3 more
doaj   +1 more source

Thrombotic Hemorrhoids [PDF]

open access: yesSouthern Medical Journal, 1917
n ...
openaire   +2 more sources

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