Results 41 to 50 of about 1,120,524 (172)
Rare Metals, Volume 45, Issue 9, September 2026.ABSTRACT Rationally selection of precursor additives during perovskite crystallization is essential for obtaining high‐quality films and achieving high‐performance perovskite solar cells (PSCs). However, the discovery and optimization of effective additives still rely heavily on time‐consuming and costly trial‐and‐error experiments.
Zhimin Feng +12 more
wiley +1 more source
Shuitu Baochi Xuebao, 2005 退耕还林还草是目前黄土高原整治生态环境和控制水土流失的主体政策。为使生态退耕政策得到有效落实,本文基于WIN-YIELD软件,以延安燕沟流域为例,利用19972002年延安站的逐日气象数据和燕沟流域地貌、土壤及土地利用等资料,模拟分析了不同地形高程、坡度和坡向条件下坡耕地种植不同作物可能产生的水土流失量及其地形分异特征。结果表明:地形坡度是影响径流和泥沙产生的重要因素,产生径流和泥沙的模拟值随地形坡度的增大而增大,地形坡度15°是坡耕地土壤侵蚀模数的相对质变点;地形高程和坡向对产生径流和泥沙的影响不大。
徐勇 田均良 刘普灵 徐学选
doaj +2 more sources
Metal‐Filamentary Memristor‐Based Artificial Neurons for Embodied Neuromorphic Intelligence
Rare Metals, Volume 45, Issue 9, September 2026.ABSTRACT Embodied neuromorphic intelligence represents a transformative paradigm for next‐generation intelligent systems, with broad implications for robotics, autonomous driving, intelligent manufacturing, and smart infrastructures. Neuromorphic chips enable bioinspired computing with sparse, heterogeneous representations and spatiotemporal dynamics ...
Tianci Huang, Zuqing Yuan, Qilin Hua
wiley +1 more source
, 2012 [[abstract]]過去十餘年來，國內外興起一波波的教育改革方案，多元化與開放性的思潮漸次影響全國各級教育的發展。中學的許多科目正面臨許多改變，如國中社會科統合性課程的建構，高中教材編輯權與考試科目選擇權的開放，許多出版社參與教材的編輯，未來的大學入學考試也允許學生可以在一定範圍內選擇考試科目，而這些也都一波波地衝擊到地理課程在國中與高中教育的定位。地理學界若能面對挑戰，並給予回應，化危機為轉機，地理仍將是學校教育的重要課程。由於地圖是現代生活的工具，也是地理教學的重要課題 ...
李明燕
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Shuitu Baochi Xuebao, 2002 在地貌信息熵计算方法和涵义讨论的基础上,计算了豫西中部山地面积大于100 km2各流域的地貌信息熵值,进而分析了豫西中部山地的地貌演化阶段,得出以下结论地貌演化处于壮年期和老年期的过渡阶段;各流域坡面形状多为下凹形为主,但山地整体的坡面形状近于直线形.
管华
doaj
Rare Metals, Volume 45, Issue 9, September 2026.ABSTRACT Magnesium hydride (MgH2) is a promising solid‐state hydrogen storage material due to its high gravimetric capacity and excellent reversibility. However, its practical application is hindered by high thermodynamic stability and sluggish reaction kinetics.
Xingyang Chen +6 more
wiley +1 more source
Rare Metals, Volume 45, Issue 9, September 2026.ABSTRACT The performance optimization of ultrahigh‐strength Cu‐15Ni‐8Sn alloy relies on controlling recrystallization and aging precipitation, which are two thermally activated processes constrained by high activation barriers. Conventional heat treatment requires elevated temperatures and prolonged holding time, inevitably leading to grain coarsening ...
Fei Tan +10 more
wiley +1 more source
, 2006 复杂场景的大范围、高分辨率纹理的快速漫游是虚拟现实、GIS、仿真等领域的关键技术与难点。DEM是对地形地貌的数字描述和模拟,利用DEM数据生成可视化地形,可以更好的描述特定区域的地形特征,通过对特定区域中模型的纹理生成和映射,配合光照、大气等区域内自然场景的建模技术,可生成较为逼真的真实场景。基于OpenGL编程进行DEM地形可视化是实现地形实时漫游的方法之一,利用层次细节模型降低场景复杂度以提高漫游帧速率是该类系统中的常用方法,由于场景复杂度问题,不同的系统在具体算法实现中采用的方法也不尽相同 ...
周可法, 赵庆展, 张清
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Rare Metals, Volume 45, Issue 9, September 2026.ABSTRACT Currently, the photocatalytic performance of ZnO has been severely limited by its weak light response ability and sluggish charge carrier dynamics, which considerably hinder its extensive application in photocatalytic fields. Herein, through anchoring the synthesized K6PMo11FeO40·nH2O (PMo11Fe) onto ZnO nanosheets, a novel S‐scheme ...
Xinjia Zhang +8 more
wiley +1 more source
The Experimental Study of Topographic Map Teachingin High School
, 2012 [[abstract]]過去數十年來，國內普遍忽略中小學地圖教育的重要性，以致學生讀圖能力低落，地形圖的相關知識也僅侷限在模式型等高線，如何提升學生使用地形圖的能力，成爲地理教育工作者的重要課題。因此，本文擬針教師如何教地形圖以及學生判讀地形圖的能力如何受教材的影響。研究發現。結果發現，教師的教學方法有四大類，如活動式、類比式與類推式、命題式、圖說式等；學生判讀地形圖的能力，受到地圖是否納入正式教材的影響，正式教材的學生表現較補充教材的學生佳。[[abstract]]The K-l2 education
李明燕
core