Results 21 to 30 of about 5,323,764 (140)
Gongye shui chuli, 2020 采用柠檬酸、壳聚糖和Fe3O4对玉米秸秆进行改性，制备了复合材料SMC，用XRD、Zeta、BET、XPS表征秸秆改性前后结构和官能团的变化，研究pH对SMC吸附Cr（Ⅵ）效果的影响，用动力学与热力学模型拟合玉米秸秆的吸附动力学与等温吸附特征。结果表明：SMC结构疏松、孔隙增大，且具有较强的顺磁性；表面接枝羧基、氨基等基团，对铬的吸附能力提高。SMC对Cr（Ⅵ）的吸附可用准二级动力学方程描述，吸附热力学过程可用Freundlich模型描述，表明吸附过程为多分子层、吸热反应，且吸附过程中部分铬被还原。
张铁军 +5 more
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International Journal of Applied Linguistics, Volume 36, Issue 4, Page 3029-3039, November 2026.ABSTRACT This study examines how foreign language teachers’ beliefs about the medium of instruction and translanguaging evolve over time by revisiting three in‐service teachers twelve years after their initial interviews. Using a qualitative longitudinal design, the study traces how translanguaging was initially framed as pedagogically deficient but ...
Danping Wang
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Resource Substitution: Local Governments' Issue Attention and Policy Reinvention
Policy Studies Journal, Volume 54, Issue 4, November 2026.ABSTRACT Research on policy reinvention, where a government modifies rather than replicates policy innovations introduced by other governments, has progressed significantly, but how it is influenced by the government's issue attention has not been thoroughly examined.
Yingxin Zhang, Yixue Yao, Kaifeng Yang
wiley +1 more source
Shuitu Baochi Xuebao, 1994 根据目前土壤水热力学及土壤动力学的研究成果，从能量观点出发，将土壤水热力学与土壤水动力学有机结合起来，在充分考虑了温度场及一些其它力场对土壤水分运移特性影响的基础上，推出了土壤水分运动方程，使土壤水分运动方程具有更广泛的适用性。为进一步模拟各种情况土壤运移提供了基础。
王全九 王文焰
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Zhejiang Daxue xuebao. Lixue ban, 2008 在鼓泡碳化法制备的普通及纳米碳酸钙表面包覆上一层羟基氧化铝，根据差热热重分析实验数据，采用master-plot标准作图法和经典动力学机理方程确定了碳酸钙的分解机理并求取相应动力学参数.普通碳酸钙包覆后分解机理由R2变为D1，纳米碳酸钙包覆后分解机理由R3变为R2.用微分和积分方法验证活化能得到很好的一一对应结果.对包覆二元复合物特殊的热分解动力学行为做了初步解释.
ZHANGHui-zhu(张惠珠) +2 more
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Engineering Photothermal Nanoplatforms for Multimodal Theranostics and Biosensing
Rare Metals, Volume 45, Issue 10, October 2026.ABSTRACT Photothermal platforms bridge materials science and biomedicine, emerging as a transformative frontier in biomedical applications. They offer spatiotemporally precise, noninvasive modalities with cell‐type‐independent efficacy for treating a range of diseases.
Xiao Han +3 more
wiley +1 more source
, 1979 关于热点下面地幔热柱(Plume)上升运动的研究,对于开发地热资源,了解火山、地震的成因,以及大陆漂移的驱动力等问题,具有十分重要的意义,本文给出了热柱上升运动的较完整的流体动力学描述,算出了热柱的大小,热柱上升运动的最大涅差、最大速度,以及热柱向岩石圈所传送的热量 ...
李荫亭, 关德相, 薛恩
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四川大学学报. 自然科学版, 1996 根据热动力学理论，建立了热导式量热体系可逆反应的热动力学数学模型．利用冷却常数，可由一张热谱图解析出所有的动力学参数．还研究了氨与硝基乙烷反应体系的热动力学，验证了该方法的正确性．
刘英进, 曾宪诚, 徐映宏
doaj
Ultrasonic Vibration Assisted Laser Processing: A Hybrid Paradigm for Extreme Surface Enhancement
Rare Metals, Volume 45, Issue 10, October 2026.ABSTRACT Traditional laser processing techniques offer many advantages, but they often encounter limitations such as heat‐affected zones, recast layers, residual tensile stresses, and poor surface finish. The integration of ultrasonic vibration (UV) presents a promising hybrid approach to overcome these challenges by introducing beneficial effects like
Aziz Ul Hassan Mohsan +6 more
wiley +1 more source
四川大学学报. 自然科学版, 2000 根据热动力学基本理论 ,导出了平行一级和二级反应的热动力学方程 ,建立了热谱解析平行的一级和二级反应动力学参数的数学模型 ...
汪海东, 陈勇, 蒋福宾, 曾宪诚
doaj