Results 31 to 40 of about 1,522,229 (164)
ABSTRACT The central challenge in photocatalysis is to direct photogenerated electrons and holes toward the simultaneous and efficient production of hydrogen and value‐added chemicals. To address the pronounced charge recombination and sluggish surface kinetics of ZnIn2S4 nanoflowers, we construct a ternary photocatalyst synergistically decorated with ...
Xue Men, Haiou Liang, Man Zhang, Jie Bai
wiley +1 more source
调整农业生产结构,增加农民收入,关键是避免农业生产结构的雷同。示范户的带动将加快同类产品种植的推广,但正是这种推广方式,容易造成种植规模失控,形成生产过剩。政府在引导农民进行生产结构调整过程中,需要提倡合理分工,控制总量,拓宽农民增收渠道,提供更多的选择机会,防止社会某一农产品生产的过量投入,避免恶性竞争,达到调整结构 ...
林民书
core
介绍了一步法生产莫来石 -钛酸铝陶瓷的配方组成和生产工艺。重点讨论了莫来石引入量和烧成温度对该材料的结构和性能的影响 ,制得了性能良好的莫来石 -钛酸铝材料。
李文魁, 李玉书
doaj
The analysis of decalin pyrolysis property under supercritical conditions(十氢萘的超临界裂解性能分析)
以十氢萘为吸热型碳氢燃料的模型化合物,研究其在550~610 ℃和0. 1~3. 5 MPa条件下的热裂解过程. 实验表明:不同温度(特别是相对较高的590和610 ℃)下,十氢萘在0. 1~2. 0 MPa压力下的转化率增加较为显著;十氢萘热裂解的主要气体产物有甲烷、乙烷、乙烯、丙烷、丙烯和碳原子数大于3的组分(C3+)等;在相同温度条件下,甲烷、乙烯的含量随压力增加而降低;乙烷、丙烷、丙烯和C3+的含量随压力增加而增加.裂解的气相产物中烯烃含量随温度升高而降低.液相产物主要包括环戊烷类、环戊烯类 ...
XINGYan(邢燕) +2 more
doaj +1 more source
ABSTRACT Microstructural characterization of Li0.32La0.56Fe0.01Ti0.94Sb0.06O3 (LLFeTSO) using AC‐TEM revealed that Fe3+/Sb3+ ion co‐doping induces the migration of lattice oxygen to grain boundaries (GBs), enhancing GB conductivity. However, the atomic arrangement at the GBs remains highly ordered and lacks sufficient cation vacancy carriers.
Binxuan Jiang +8 more
wiley +1 more source
桩腿耦合装置(LEG MATING UNIT,简称LMU)是海上油气生产平台采用整体浮托法安装的重要构件之一,其作为平台上部组块与导管架对接的中间缓冲装置,不仅起着避免上部组块与导管架组装时产生直接冲击的作用,而且在组块就位后,LMU与组块、导管架焊接成一体,成为整个平台承重结构的一部分,对于大型的海上生产平台,组块总重量较大,LMU的制造质量对组块的准确就位以及承载能力起着非常重要的作用。
吕英创 +3 more
doaj
ABSTRACT Multifunctional thermal protective ceramic thermal/environmental barrier coatings (T/EBCs) are of great significance for applications of various high‐temperature components, and we propose an effective strategy for designing high‐entropy ceramics (HECs) as T/EBCs for SiC ceramic matrix composites (CMCs), where low thermal expansion ...
Qinshuo Wang +7 more
wiley +1 more source
Biomass‐Derived Laser‐Induced Graphene: From Precursor Chemistry to Device Integration
ABSTRACT Laser direct writing provides a mask‐free route for converting suitable carbon‐containing precursors into patterned, porous, and conductive laser‐induced graphene (LIG) networks. Although LIG was initially demonstrated mainly using aromatic synthetic polymers, such as polyimide, biomass precursors introduce renewable feedstocks with highly ...
Wanjun Yin +10 more
wiley +1 more source
采用成对比较假设测验,通径分析及S•A•Eberhart—W•L•Russell方法,分析了小麦新品种川育12在四川、云南、贵州三省46个不同地点的产量、产量构成因素及其稳定性。结果表明:川育12属高产稳产型品种,增产潜力大.适应性广。产量与单位面积穗数、穗粒数、千粒重的多元回归方程为:y=-1968.150+195.063X1+45.240X2十24.408X3。单位面积穗数对产量的效应最大,偏相关系数r1y=0.8663,通径系数P01=0.9800,其次是穗粒数,偏相关系数及通径系数分别为0 ...
吴瑜
core
ABSTRACT Anchored on the sustainable development goals (SDGs) and the Paris Agreement, which seek to limit the global average temperature to well below 2°C above pre‐industrial levels and pursue efforts to limit the temperature to 1.5°C, this study investigates how green energy finance and environmental taxes affect environmental quality, with an ...
Mohammed Musah +4 more
wiley +1 more source

