Results 11 to 20 of about 1,492,601 (81)
Grain Boundary Density Governs the Discharge Behavior of Mg Anodes in Biodegradable Batteries
ABSTRACT Biodegradable magnesium (Mg) alloys have entered clinical use, yet their development as self‐powered absorbable batteries is hindered by poor anode performance, including high self‐corrosion, passivation, and nonuniform dissolution. The role of grain boundary density in governing discharge behavior remains unclear.
Xiaohui Shao +3 more
wiley +1 more source
First, He Was Adam, and Then, She Was Eve
ABSTRACT Trans* is an umbrella term that is used to describe people who identify with a gender that is different from their assigned sex at birth. There has been a marked increase in young people presenting to child and adolescent mental health services due to a lack of specialist gender clinics in the United Kingdom.
Corey Hartley +2 more
wiley +1 more source
Enhanced Corrosion Resistance in an Additively Manufactured Copper Alloy via Suppressed Segregation
ABSTRACT This study elucidates the corrosion behavior of C18150 Cu–Cr–Zr alloy fabricated by laser powder bed fusion (LPBF) in comparison with a conventional wrought baseline representative of industrial Cu–Cr–Zr plate products, highlighting the superior corrosion resistance of the additively manufactured condition.
Yang Qi +4 more
wiley +1 more source
ABSTRACT Overcoming the strength–ductility trade‐off in face‐centered cubic (FCC) multi‐principal element alloys (MPEAs), particularly at cryogenic temperatures, remains a significant challenge. Here, a laser powder bed fusion (LPBF)–enabled direct aging strategy is employed to modify the precipitation behavior in a Ni53Fe20Cr23Nb4 (at%) alloy.
Xiaohui Qin +8 more
wiley +1 more source
在床截面为300mm×300mm、床高为4.4m的管式布风流化床实验台上,分别对宽筛分下不同颗粒粒度、不同床层高度、不同截面流速、布风的均匀性以及非平衡布风时颗粒流化特性进行实验研究,为未来垃圾衍生燃料的流化燃烧实验提供基础数据。管式布风流化床的开孔方向与夹角大小对床层压降变化影响明显,向下开孔角度越小,动能消耗越大,但床层稳定性能好。随着料层高度增加,各布风管间的布风更趋于平衡,流化的稳定与均匀性能也越好。管组压降失衡时,床层压降不平衡明显增加,波动幅度增大 ...
马晓茜 +5 more
core +5 more sources
ABSTRACT Objective To evaluate whether fetuses exposed to threatened preterm labor (PTL) without intra‐amniotic infection or inflammation (IAI), who were born ≥ 34 weeks' gestation, show signs of cardiac remodeling and dysfunction at admission and 4 weeks after the episode of threatened PTL.
C. Murillo +11 more
wiley +1 more source
在直径70mm的流化床中,采用FCC、空心玻璃珠、细沙等A类和B类颗粒,在0 ̄10Hz的频率范围内,测定了气固脉冲流化床的流体力学特性。采用时间继电器改变脉冲气流的频率和脉宽周期比,利用微压传感器记录床层压力变化,研究了瞬时床层压力、平均床层压力,最大床层压降、起始流化速度、床层高度等随操作条件的变化规律,并对脉冲流化床中的气泡现象进行了初步的观察和研究 ...
刘大有, 聂永生
core +2 more sources
ABSTRACT Confrontational violence still puts catastrophic burdens on children, with 2024 being the highest recorded levels of displacement, malnutrition, injury, and deprivation in contemporary humanitarian history. Children's surgical care is still grossly underrepresented in health responses worldwide in the prevention of avoidable deaths and long ...
Gaurav Chanderprakash Mittal +4 more
wiley +1 more source
生物质资源是仅次于煤炭、石油、天然气的第四大资源,占世界能源总消费量的10-14%。我国拥有丰富的生物质能资源。据测算,我国理论生物质能资源量约为50亿吨/年。目前可供能源开发利用的资源主要为各类有机废弃物。许多生物质的热化学和生物化学转化过程包括燃烧,气化,热解和发酵的研究已经在全世界范围内广泛开展。而大多数生物质的利用过程都包含流态化过程。随着生物质流化床工业应用研究的广泛开展,生物质流化床气化技术被认为是最有前景的生物质能利用技术之一 ...
王储
core +1 more source

