Results 21 to 30 of about 2,860 (166)
Shuitu Baochi Xuebao, 2018 以南方典型红壤区福建省长汀县水土保持科教园5种水土保持措施为研究对象，采集坡面产流产沙及稀土迁移数据，以期揭示南方红壤区水保措施的减水减沙效益及对稀土迁移的阻控效应。结果表明：（1）全坡面种草、封禁、低效马尾松施肥、乔灌草混交、人工补植马尾松5种水土保持措施的年均减流率和年均减沙率分别为65.41%，69.29%，63.42%，86.19%，72.59%和91.87%，84.21%，81.54%，94.13%，81.75%。（2）各降雨量下，5种水土保持措施径流和泥沙的稀土迁移强度分别比对照小区低85 ...
张青青 +3 more
doaj
智能科学与技术学报, 2023 新疆夏尔希里自然保护区是一处珍稀生物资源与无法估量的生态价值共融的自然瑰宝，被誉为“中国最后的净土”和“珍稀的天然基因库”。为确保这一自然宝库的可持续发展，提出了“平行夏尔希里”概念，以智能化手段全方位助力其生态资源的精细化管理。核心思想是利用描述智能建立高精度模型，通过预测智能分析生态系统变化，借助引导智能科学地制定保护策略。探索了通过智能科技建立自然保护区管理与应用的新模式，以期推动保护区及其珍贵生物资源的可持续发展。
皮佩定, 倪清桦, 杨静, 康孟珍, 李宣昊, 杜应昆, 王飞跃
doaj +1 more source
Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT Mechanoluminescent materials have gained significant attention for their unique capability to convert mechanical stimuli into light without external optical or electrical excitation, holding immense promise for applications in safety monitoring, biomedicine, optical anti‐counterfeiting, and intelligent sensing.
Fanlei Qin +8 more
wiley +1 more source
基于实地和遥感调查的离子型轻稀土尾砂土壤侵蚀对植被修复措施响应
Shuitu Baochi Xuebao, 2020 稀土开采产生大量尾砂，导致严重土壤侵蚀，伴生水质和地质灾害，评价植被修复措施对稀土尾砂土壤侵蚀治理效果可为措施优选提供理论依据。以寻乌县离子型轻稀土尾砂区为研究区，基于1982—2015年GIMMS NDVI 3 g、DEM等遥感和尾砂理化性状现场调查数据，采用空间代时间方法，结合RUSLE模型及其全微分公式探究不同修复年限土壤侵蚀量对植被修复措施的响应机理。结果表明：1982—2015年研究区土壤侵蚀模数显著下降，倾向率为-60 t/（km2·10a），突变年份为2008年；在植被修复措施实施年 ...
罗建伟, 白桦, 鲁向晖, 赵建民
doaj
Petrochemistry and mineral chemistry studies on metamorphic ultramafic rocks in Yanghou area, Zhenghe Country, Fujian Province, China [PDF]
, 1997 Petrochemistry studies indicate that the Yanghou metamorphic ultramafic rocksare composed of metamorphosed harzburgite and burgite and ultramafic cumulate .
Li, JL, Ren, SL, Sun, M, Zhou, XH
core
Rare Metals, Volume 45, Issue 1, January 2026.ABSTRACT With increasing complex requirement in organic pollution environment, the development of actual electromagnetic wave (EMW) absorbers with high EMW absorption performance and self‐cleaning pollution function is becoming a significant challenge.
Shou‐Hang Lv +8 more
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2012 近年来稀土化合物在农业生产上较为常用,对农作物及动物有增产增效作用,目前已证实植物性食品中含有一定浓度的稀土元素,随着稀土微肥的广泛应用,稀土元素可经食物链进入机体内[1-4],因此稀土对生态环境和人体健康的影响以及对稀土近期及远期生物学效应的研究也越来越引起人们的关注,近年来有些学者报道了较低剂量的稀土化合物经口服、腹腔注射及尾静脉注射可提高机体的免疫力及抗氧化能力[4-6],本实验依据这一点通过对糖尿病大鼠心肌超氧化物歧化酶（SOD）和脂质过氧化物（LPO）的研究 ...
黄可敬, 黄可欣, 李锐, 石搏
doaj
Journal of Linguistic Anthropology, Volume 35, Issue 2, August 2025.Abstract This article argues that social actors' media ideologies about digital interfaces are key to the enregisterment of online activities. Focusing on an online register emergent from user activities around Year, Hare, Affair (YHA)—a state‐aligned Chinese animation—I explore how different metadiscourses evaluate this register by entextualizing ...
Jiarui Sun
wiley +1 more source
Integrative Conservation, Volume 4, Issue 2, Page 246-253, June 2025.After the great Chinese poet Qu Yuan (屈原) was exiled to Xupu (溆浦) county in Hu' nan province, he described the forest there as follows: “mysterious is the deep forest, the place where Yuán yòu dwell (深林杳以冥冥兮,乃猿狖之所居).” What is the referent of the name Yuán yòu in this sentence?
Kefeng Niu
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2012 目前已证实植物性食品中含有一定浓度的稀土元素,随着稀土微肥的广泛应用,稀土元素可经食物链进入机体内[1-4]。近年来有些学者报道了较低剂量的稀土化合物经口服,腹腔注射及尾静脉注射可使血清中生长激素及胰岛素水平显著升高[5-9],本实验依据这一点探讨口服三氯化钐对糖尿病大鼠胃粘膜的影响,为稀土元素应用于临床以及预防保健提供理论依据。
黄可敬, 黄可欣, 王元春, 石搏
doaj