Results 31 to 40 of about 1,119,623 (161)
Shuitu Baochi Xuebao, 2008 利用洮河流域气象观测资料和水资源定位观测资料,分析气候变化特征、水资源变化特征及其二者的关系,建立水资源气候模式。分析表明:洮河流域降水量年际变化呈下降趋势,降水量变化曲线线性拟合倾向率在-14.5~-4.6 mm/10 a之间,降水量递减以夏季降水量递减为主。气温年际变化趋势呈显著上升趋势,气温变化曲线线性拟合倾向率在0.12~0.59℃/10 a之间,增温率以冬季最大,年际变化趋势从20世纪70年代之后持续上升。年干燥指数变化呈显著上升趋势,年干燥指数变化曲线线性拟合倾向率在0.05~0.12/10
姚玉璧 +3 more
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Gongye shui chuli, 2020 光合细菌污水资源化是一种新兴的有机废水处理及生物资源转化技术。光合细菌能够高效处理污水，同时把碳氮磷转化为有用的菌体细胞，可用于水产、畜禽养殖和农作物培育。从光合细菌污水资源化技术对营养型废水的资源化、对高氨氮废水的高效氮去除、对其他类型废水的处理、光合细菌污水处理重要影响因素、主要促进方法5个方面进行了综述。最后对未来的研究进行了展望。
张光明, 孟帆, 曹可凡, 郅然
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Conservation Biology, Volume 40, Issue 3, June 2026.Abstract Human development is a driver of global change and a major threat to biodiversity. Protected areas maintain and support biodiversity, but outside stressors, such as climate change and land use change, can negatively influence natural resources within protected areas.
Leah J. Rudge +2 more
wiley +1 more source
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
, 2012 以新疆1995、2000、2005及2008年4个时期的土地利用数据为基础,结合水资源分区、SRTM-DEM和数字地貌等数据,分析了基于水资源分区和地貌特征的新疆耕地资源的变化特征,结果表明:①总体上,不同时段各水资源分区耕地空间分布稍有变化,但总体格局保持不变。不同时段各水资源分区的耕地面积有增有减,但增加量远超过减少量,耕地总体呈现出持续增长的趋势,从1995年到2008年,共增加126.39×104hm2。②对比4个时期26个水资源分区的耕地数值、变化和升降形式差异,可将耕地变化形式归纳为上升 ...
方月 +8 more
core
, 2015 通过对海藻资源量及养殖潜力的分析，重点阐述了以海藻成分差异获得不同目标产物（生物柴油、生物燃气、氢气和乙醇）的生化转化技术的研究进展，并对海藻能源单一利用和综合利用进行了对比，在未来海藻能源工业化中，既要考虑资源的合理利用 ...
孔晓英 +5 more
core +1 more source
Si Alloying Enables High Performance in Ce‐Substituted Hot‐Deformed Nd–Fe–B Magnets
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT High levels of Ce substitution typically degrade the magnetic performance of hot‐deformed Nd–Fe–B magnets, posing challenges for developing resource‐efficient permanent magnets. Here, we demonstrate that minor Si alloying in (Nd0.6Ce0.4)‐Fe‐B hot‐deformed magnets effectively compensates for this degradation and enables enhanced magnetic ...
Feifei Li +6 more
wiley +1 more source
民族文化旅游资源评价与开发主题分析--以哈萨克民族文化旅游资源为例[C]
, 2011 旅游资源评价是在一定尺度的时空范围内对资源数量、资源丰度、资源级别构成、类型、空间组合情况以及外部环境的综合评价。其意义在于科学评价旅游资源开发利用的现状、客观分析其发展变化规律，从而为旅游资源开发与保护以及区域旅游业发展提供科学决策依据。本文综合分析了哈萨克民族的文化特征、地理分布和区域分工等因素，对哈萨克民族文化旅游资源进行了系统分类和总结，采取定性与定量相结合的方法构建了民族文化旅游资源评价指标体系。从观赏性、历史文化价值、科学价值、艺术价值、奇特度、规模丰度、完整性等因子和旅游资源的组合度 ...
杨兆萍 +2 more
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Development of Synthetic Microbial Community-Based Liquid Starter and Flavor Profile of Honggu Huangjiu(红谷黄酒的合成微生物液态发酵剂开发与风味研究) [PDF]
Shipin kexue jishu xuebaoTo enhance the stability and controllability of Honggu Huangjiu production, a liquid Honggu Huangjiu starter based on a synthetic microbial community was developed. 12 core microorganisms were screened from commercially available solid Huangjiu starters.
LI Huixing(李慧星) +7 more
doaj +1 more source
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Rechargeable aluminium‐ion batteries (RAIBs) are promising candidates for sustainable energy storage owing to their low cost, safety, and resource abundance. However, the lack of durable cathode materials restricts their development. Here, we propose a topology‐guided design strategy by synthesizing three thioether‐bridged naphthoquinone ...
Jia Qiao +8 more
wiley +1 more source