Results 21 to 30 of about 11,061 (194)
Political Cycles, Electricity Policy, and Mexico's Economy
Latin American Policy, Volume 17, Issue 2, June 2026.ABSTRACT Electricity reform in Mexico should stimulate economic growth, improve energy efficiency, and reduce greenhouse gas emissions. This article evaluates the successes and failures of reform and draws lessons across political cycles by analyzing changes in political dynamics—often tied to policy reversals—and the legal framework during the pro ...
David Bonilla
wiley +1 more source
The impacts of nutrients and organic carbon availability on microbial carbon utilization and its consequences [PDF]
, 2015 海洋作为地球上重要的碳库，在全球气候变化的背景下，受到广泛关注。其中微型生物在海洋碳循环过程中发挥了重要作用。传统研究认为，环境营养盐浓度的提高可以增加初级生产力，固定更多的CO2，因此有利于储碳；而微型生物碳泵的生态学原理指出，过量营养盐会刺激细菌利用环境中的惰性有机碳，不利于储碳。即，固碳不等于储碳。同时，土壤和淡水环境的研究发现，在外源活性有机碳输入的条件下，原位环境的惰性有机碳会被加速利用，导致更多有机碳被消耗，称为“激发效应”(PrimingEffect,PE)。PE在碳循环中具有重要意义 ...
刘纪化
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Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Laser powder bed fusion (LPBF) can fabricate high‐entropy alloys (HEAs) with refined microstructure and enhanced mechanical properties. However, the deformation and fatigue mechanisms of Al‐containing HEAs produced by LPBF remain unclear. In this work, we systematically investigate the tensile properties, deformation mechanisms, and high‐cycle
Dan Zheng +4 more
wiley +1 more source
萨拉乌苏河流域150 ka BP 以来的粒度旋回 [PDF]
, 2001 萨拉乌苏河流域米浪沟湾地层剖面150 ka BP 以来古流动砂丘砂与河湖相和古土壤在粒度上具有多次显著的粗细韵律交替变化, 粒度参数- M z、R、Sk、Kg 和SC/ D 亦随之响应为多波动峰谷交替的态势。同时, 粒度特征值- 5 5、5 16、5 25、5 50、5 75、5 84、5 95 相应地表现为非常有节奏地跳动。据此, 将米浪沟湾剖面划分为27 个粒度粗细沉积旋回, 并认为其是150 ka BP 以来在东亚冬夏古代季风交替影响下沙漠演变的一个颇为完整的气候- 地质过程记录。The ...
Jin, H +8 more
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Spatial-temporal Evolution Characteristics and Driving Factors of Sand-dust Weather for Inner Mongolia Autonomous Region During 1960—2020 [PDF]
, 2023 [Objective] The spatial and temporal evolution characteristics and driving factors of sand-dust weather in Inner Mongolia Autonomous Region from 1960 to 2020 were analyzed in order to scientifically understand the changes in regional sand-dust weather ...
Qin Fucang, Wang Manfei, Yang Shuchang
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Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Nickel‐based superalloys (Ni‐based superalloys) have attracted extensive attention in laser additive manufacturing (LAM) due to their capability to directly fabricate complex and high‐performance structural components. However, the rapid melting and solidification inherent to LAM result in intense thermal cycling, which induces high residual ...
Tianxiang Lin +9 more
wiley +1 more source
Contribution of Different Processes in Wetland Soil N_2O Production in Different Restoration Phases of the Yellow River Estuary, China [PDF]
, 2014 采用时空替代法,选择黄河口生态恢复前后未恢复区(R_0)、2007年恢复区(R_(2007))和2002年恢复区(R_(2002))的芦苇湿地为研究对象,分析了生态恢复工程对湿地土壤N_2O产生不同过程与贡献的影响. 结果表明,尽管不同恢复阶段湿地土壤N_2O总产生量差异明显,但总体均表现为N_2O释放. 恢复区湿地土壤的N_2O产生量大于未恢复区.
孙万龙 +4 more
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Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT Thermally driven hydrogenation of CO2 to light olefins (C2=–C4=) using metal oxide‐zeolite tandem catalysts is an effective strategy for achieving carbon neutrality. However, progress in this area is constrained by zeolite pore transport limitations, acid‐site inactivation, and surface carbon poisoning.
Haifeng Tian +10 more
wiley +1 more source
How exotic mangrove species Sonnoratia apetala and native species Kandelia obovata response to global changes [PDF]
, 2017 本研究旨在探讨气候变暖和海平面上升背景下，外来红树植物无瓣海桑（Sonneratiaapetala）和本土红树植物秋茄（Kandeliaobovata）的响应机制。在温州鳌江、福建云霄和海南东寨港三地，通过构建模拟海平面上升的人工水位平台（Marshorgan），在野外自然潮汐条件下模拟海平面上升40cm和80cm的情境；同时在平台上加装开顶箱（Opentopchamber）装置，通过被动增温模拟未来大气增温的情景。根据对云霄漳江口红树林的高程调查结果，将水位平台的海平面等级划分为4级：HW ...
郭旭东
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Rare Metals, Volume 45, Issue 4, April 2026.ABSTRACT The rapid advancement of 5G communication technology has intensified electromagnetic pollution, creating an urgent demand for flexible multifunctional fabrics with efficient electromagnetic interference (EMI) shielding performance. This study proposes a novel material‐stacked construction strategy to fabricate multifunctional MXene/cellulose ...
Zong‐Kai Yan +9 more
wiley +1 more source