Results 41 to 50 of about 2,596,701 (301)

Study on the Mechanism of Rootstock Damage during Clamping in Watermelon Grafting

open access: yesHorticulturae, 2022
Rootstock has a soft tissue that should be held carefully to avoid mechanical damage. Holding the rootstock stem is a significant factor in the grafting process, with direct consequences on the survival rate of grafting.
Kang Wu   +5 more
doaj   +1 more source

Study of in-situ degradation of thermal control surfaces [PDF]

open access: yes, 1972
Experimental technique used in study of damage mechanism to semiconductor pigments exposed to ultraviolet radiation can be adapted for investigations of surface chemistry and may be used analytically to determine ...
Gilligan, J. E., Zerlaut, G. A.
core   +1 more source

Upacicalcet: A Novel Intravenous Calcimimetic Agent for Patients Undergoing Hemodialysis With Secondary Hyperparathyroidism

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Secondary hyperparathyroidism (SHPT) is a common complication in patients receiving maintenance dialysis, driven by calcium and phosphate metabolism disturbances. Calcimimetics are central to the management of SHPT by enhancing calcium‐sensing receptor sensitivity and reducing parathyroid hormone secretion.
Fumihiko Koiwa   +3 more
wiley   +1 more source

Poisson effects of 2D-C/SiC composite under axial loading conditions

open access: yesCailiao gongcheng, 2021
By using monotonic and cyclic loading tests, the Poisson curves along the fiber bundles directions of a 2D-C/SiC composite were obtained during various axial tensile and compressive loading processes.
GUO Hong-bao   +3 more
doaj   +1 more source

A thermodynamically consistent cohesive damage model for the simulation of mixed-mode delamination [PDF]

open access: yes, 2017
This work is devoted to the formulation of a new cohesive model for mixed-mode delamination. The model is based on a thermodynamically consistent isotropic damage formulation, with consideration of an internal friction mechanism that governs
Confalonieri, Federica, Perego, Umberto
core  

The influence of toughening-particles in CFRPs on low velocity impact damage resistance performance

open access: yes, 2014
The role of particle-toughening for increasing impact damage resistance in carbon fibre reinforced polymer (CFRP) composites was investigated. Five carbon fibre reinforced systems consisting of four particle-toughened matrices and one system containing ...
Bull, D.J.   +3 more
core   +1 more source

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

open access: yesFEBS 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

Damage and failure mechanism of pre-static loaded rock under cyclic impact

open access: yesMeitan xuebao
To study the damage and failure mechanism of rocks under the coupling effect of high ground stress static load and cyclic impact disturbance generated by mining and excavation, the multi-strain rate dynamic static superposition rock mechanics test system
Hanpeng WANG   +4 more
doaj   +1 more source

Methodology for the Analysis and Assessment of the Reliability of the State and Prediction the Service Life of Reinforced Concrete Structures

open access: yesЖелезобетонные конструкции, 2023
Reinforced concrete structures can be exposed to aggressive environmental influences, which leads to a decrease in their bearing capacity during their service life.
A. G. Tamrazian
doaj  

Study on Fretting Wear of 690TT Alloy Heat Transfer Tube in High Temperature and High Pressure Water Environment

open access: yesYuanzineng kexue jishu, 2023
Steam generator (SG) is the key component of primary and secondary circuits in pressurized water reactor (PWR) nuclear power plant. Its integrity is very important for the safe operation of PWR nuclear power plant.
CHU Qibao1,2;HUANG Qian3;ZHANG Mengyang4;JIANG Qinglei4;TAN Wei1
doaj   +1 more source

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