Abstract The accelerated pace of biological aging predicts mortality and morbidity later in life. The current study examines whether a change in supportive couple functioning buffers accelerated aging associated with stressful community environments among Black Americans who live in rural, Southern, disadvantaged neighborhoods.
Man‐Kit Lei, Steven R. H. Beach
wiley +1 more source
Technical progress of construction and safe operation of underground gas storage under complex geological conditions [PDF]
Due to the high dependency of China on imported natural gas, continuously enhancing the gas storage capacity in peak shaving and stable supply is an inevitable choice to assure natural gas security in China.
Chun LI +7 more
core +1 more source
Nutrient Characteristics and Factors Influencing Surface Soil with Gully Erosion on Sloping Farmland for Low Hilly Terrain in Black Soil Area [PDF]
[Objective] The soil nutrient characteristics and influencing factors of surface soil gully erosion for low hilly terrain in the black soil area were studied in order to provide data and theoretical support for the rational use of land resources ...
He Xuyang +7 more
core +1 more source
Investigation of behaviour of particle impact on material by impinging jet [PDF]
颗粒冲击材料现象广泛存在于自然界以及工业领域中。应用实验测量与数值计算相结合的方法研究了颗粒射流冲击材料(304不锈钢)的磨损行为。考虑了颗粒粒; 径、运动轨迹、颗粒-壁面撞击点分布以及所导致材料物相结构变化。实验测试包括材料质量损耗、材料元素X射线衍射(XRD)分析、表面微观结构扫描电镜(; SEM)观察。对相应的颗粒射流冲击材料行为进行了数值计算,获得流场,颗粒场以及相应材料磨损。结果表明:颗粒射流冲击下颗粒运动轨迹与撞击点的分布不; 同,造成了材料样品表面磨损区域明显不同。颗粒 ...
周芳 +5 more
core +1 more source
Energy storage via storing flood in abandoned mines and low temperature heat energy utilization from mine water [PDF]
The utilization of underground space in abandoned mines is a key direction supported by the coal industry. By combining underground space utilization, flood storage, and heat supply in winter, this paper proposes a comprehensive utilization model of ...
Hongwei ZHANG +3 more
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Erosive wear of in-situ transformed carbon fiber toughened alumina ceramic composites [PDF]
An in-situ transformed carbon fiber toughened alumina ceramic matrix composite was prepared by vacuum hot pressure sintering technology, and the slurry erosion wear behaviour of the composite was tested at different impact angles and velocities on a ...
CHEN Hua-hui +4 more
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Basic experimental research on the delineation of the evolutionary process of fault water inrush [PDF]
Coal mining is seriously threatened by fault water inrush, showing the disaster characteristics of hysteresis and concealment. Mastering the evolution mechanism and process law of fault water inrush disaster has important theoretical guiding significance
Hui YANG +5 more
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Damage mechanism of reaction sintering SiC ceramic inner cylinders [PDF]
A reaction bonded SiC ceramic used in a suspension preheater inner cylinder was comparatively analyzed before and after use by X-ray diffractometer,scanning tunneling microscopy and energy dispersive spectroscopy,and its damage mechanism was studied. The
CHEN Jun-hong +6 more
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Research on development and application of test equipment for measuring soil erosion characteristics [PDF]
The soil erosion characteristics mainly include two indexes: critical shear stress for incipient motion of soil and soil erosion rate, which are controlling factors of breach flow and breach morphology evolution during embankment dam breaching ...
LU Hongning1 , ZHONG Qiming1, 2, 3 , SHAN Yibo1, YANG Meng1, HU Liang4
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Erosion corrosion behavior of AISI 304/316 stainless steel [PDF]
304/316不锈钢以其良好的抗腐蚀性能和机械性能而得到广泛应用,尤其是在核电行业。然而,在其应用中存在着冲蚀磨损,腐蚀磨损,应力腐蚀开裂和高温氧化等问题。本文研究了304/316不锈钢两相射流冲蚀磨损行为,在NaCl、HCl和NaOH中的腐蚀磨损行为,在实验室模拟压水堆条件下的应力腐蚀开裂和高温氧化腐蚀行为。 (1)本文通过两相高速射流对304/316不锈钢的冲蚀实验,通过失重法和材料表面形貌、结构和成分微观分析,研究材料冲蚀磨损失效过程以及冲蚀机理分析 ...
周芳
core

