Results 61 to 70 of about 1,531,348 (285)

Impact of Depression on Activation and Summer Heat Adaptation in Older Adults With Cardiovascular Concerns: Empirical Research Quantitative

Nursing Open
Aim To investigate the effects of depression on patient activation and summer heat adaptation, considering important contributory factors in older adults with increased cardiovascular health concerns on extremely hot days.
Yuli Zang, Lihua Wang, Kai Chow Choi, Hongxia Du   +3 more
doaj   +1 more source

Microstructural Evolution and Mechanical Performance of Plasma‐Assisted Hybrid Friction Stir Welded Dissimilar Aluminum–Copper Joints

Advanced Engineering Materials, EarlyView.
Plasma‐assisted hybrid friction stir welding of dissimilar AlCu joints employs localized plasma preheating to balance heat input and enhance plastic flow. The optimized process reduces axial force by up to 35%, refines the microstructure, and achieves ≈96% joint efficiency.
Deepak Kumar Yaduwanshi, Pankaj Shrivastava, Ganesh Chouhan, Velaphi Msomi   +3 more
wiley   +1 more source

Numerical Investigation on the Influence of Hot Streak Temperature Ratio in a High-Pressure Stage of Vaneless Counter-Rotating Turbine

International Journal of Rotating Machinery, 2007
The results of recent studies have shown that combustor exit temperature distortion can cause excessive heat load of high-pressure turbine (HPT) rotor blades. The heating of HPT rotor blades can lead to thermal fatigue and degrade turbine performance. In
Zhao Qingjun, Wang Huishe, Zhao Xiaolu, Xu Jianzhong   +3 more
doaj   +1 more source

Thermal state simulation analysis of molten iron ladle based on different insulation measures

工程科学学报, 2018
The turnover time for transporting a hot metal from a blast furnace to a basic oxygen furnace is long and therefore the heat preservation effects are not ideal. These factors affect the temperature and thermal state of the ladle refractories, which leads
YUAN Fei, YANG Guang, XU An-jun, FENG Kai   +3 more
doaj   +1 more source

Interaction between Molten Al‐Killed Mn–B Steel and Carbon‐Bonded MgO Refractories Based on Recyclates

Advanced Engineering Materials, EarlyView.
High‐temperature interactions between low‐sulfur Al‐killed Mn–B steel and MgO–C refractories (0 and 50 wt% recyclates) are studied via finger immersion tests (1600 °C). Surface‐active elements influence infiltration. MgO/CaS layer forms, along with spinel and calcium silicate.
Matheus Roberto Bellé, Lukas Neubert, Anton Yehorov, Till M. J. Stadtmüller, Christos G. Aneziris, Olena Volkova   +5 more
wiley   +1 more source

JAHA at Scientific Sessions 2024: Climate Change–Related Cardiovascular Health Effects in the Global South

Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease
Climate change poses an escalating threat to cardiovascular and cerebrovascular health in the Global South, where vulnerability is amplified by rapid urbanization, poverty, and weak infrastructure.
Ana Navas‐Acien, Joel D. Kaufman, Sameed A. M. Khatana, Robbie M. Parks, Sanjay Rajagopalan, Cara M. Smith, Randi Foraker   +6 more
doaj   +1 more source

CS Lines Profiles in Hot Cores

, 2010
We present a theoretical study of CS line profiles in archetypal hot cores. We provide estimates of line fluxes from the CS(1-0) to the CS(15-14) transitions and present the temporal variation of these fluxes.
Aladro, Bacmann, Bayet, Bayet, Bayet, Beuther, Ceccarelli, Chandler, de Vicente, Doty, E. Bayet, Graves, Habing, Harper, Hatchell, Hatchell, J. Yates, Kaifu, Martín, Millar, Millar, Murata, Pratap, Remijan, S. Viti, Schoenberg, Wu, Yao, Yates   +28 more
core   +1 more source

Bimetallic (NiFe) and Trimetallic (NiFeCr) Nanoalloys from Metal Oxides Using a Microwave Hydrogen Plasma

Advanced Engineering Materials, EarlyView.
Bimetallic (NiFe) and trimetallic (NiFeCr) nanoalloys (NAs) are synthesized using corresponding oxide mixtures using microwave hydrogen plasma within a few milliseconds. The process simultaneously 1) reduces metal oxides to metals; 2) downsizes the particles from micrometers to nanometers; and 3) blends the metals to form NAs.
Sachin Kumar, Mohammad Kazemi, Zichang Xiong, Thomas Cameron, Julian Held, Uwe Kortshagen   +5 more
wiley   +1 more source

Experimental study of a novel downhole heat exchanger utilizing working fluids for enhanced heat exchange

Case Studies in Thermal Engineering
This study designs and assesses a new type of shell and tube downhole heat exchanger (NDHE) equipped with organic working fluid (R32, R134a) to increase the thermal performance of the single well geothermal system.
Dongxi Liu, Di Gu, Wei Zhang, Maoqin Hu, Chuanshan Dai, Lanlan Tian, Shuantong Shangguan   +6 more
doaj   +1 more source

Impact of Hot Pressing Temperature on Medium Density Fiberboard (MDF) Performance

Advances in Materials Science and Engineering, 2017
Hot pressing temperature is determined according to the performance of boards, type of glue, and production efficiency of hot press. During hot pressing, the thermal energy has enhanced the plasticity of the fiber and created conditions for the ...
W. Gul, A. Khan, A. Shakoor
doaj   +1 more source