Results 41 to 50 of about 14,849 (205)

采石废弃地弃渣与农田土混合土壤粒径特征及水文效应

open access: yesShuitu Baochi Xuebao, 2022
探究弃渣与农田土不同混合比例下重构土体粒径特征和水文效应的差异,对于提高采石废弃地重构土体的结构稳定、水资源高效利用以及资源利用化具有重要意义。以采石场弃渣和农田土为重构基质,以0∶10(C1),3∶7(C2),5∶5(C3),7∶3(C4),10∶0(C5)体积比例混合,采用野外土柱模拟方法,探究不同配比下土壤粒径特征和水文效应的差异。结果表明:(1)不同配比下弃渣含量越高,砂粒比重越大、黏粒和粉粒比重越小,砂粒比重最大为61.50%,分散度、偏度、峰态等群体特征参数变化分别为降低、升高、升高 ...
王佳欢   +5 more
doaj  

Driving Factors on Runoff Change in the North Semiarid Rapidly Urbanization Watershed [PDF]

open access: yes, 2018
The hydrological process of a watershed influences a lot on the local socioeconomic development. The analysis of runoff change caused by the rapid urbanization on the watershed is of important significance in the management and protection of the local ...
Bai, Yong   +3 more
core   +1 more source

现代水文信息技术在水情遥测中的应用分析

open access: yes水电科技
随着现代水文信息技术的快速发展,水情遥测在水资源管理和灾害预警领域的应用日益重要。水情遥测是通过传感器和监测设备实时获取水文数据,并利用先进的信息技术进行数据传输、处理和分析。通过遥测技术,可以实现对水位、降雨量、流量等关键参数的准确监测和数据传输,为水资源管理决策和灾害预警提供科学依据。文章旨在对现代水文信息技术在水情遥测中的应用进行分析和探讨。通过深入研究和总结,可以更好地了解水情遥测技术的优势、挑战和未来发展方向,为提升水资源管理和灾害预警的效能提供有益参考。
志刚 李
semanticscholar   +1 more source

微课在小学语文教学中的应用研究

open access: yes国际教育论坛, 2020
微课作为当下一种新起的教学方式,在语文课堂教学中的应用十分广泛。基于微课的翻转课堂在小学语文教学过程中的应用,创新了当下的教学模式与改革了教学方法,使学生获得了全新的学习体验并且收获了学习方法。借助微课课堂,课前指导学生自主学习,课中再指导学生通过合作进行探究,最后进行课后拓展实践,通过构建有效的翻转课堂,践行以学为本,以生为本理念,持续强化学生的知识水平与提高学习能力,让学生更加扎实全面掌握知识,提升学生语文素养和综合能力。
青 陈
semanticscholar   +1 more source

Smart Biomaterials and Dressings for the Treatment of Chronic Inflammatory Skin Diseases

open access: yesRare Metals, EarlyView.
ABSTRACT Chronic inflammatory skin diseases, encompassing immune‐inflammatory conditions and infection‐associated dermatoses, pose significant clinical challenges due to high prevalence, recurrence, and therapeutic resistance, affect over 30% of the global population.
Zehao Lan   +5 more
wiley   +1 more source

海洋水色遥感机器学习模型应用现状及定标与真实性检验AI模型展望

open access: yesHaiyang yu huzhao
海洋水色遥感技术是观测海洋水色状况的高效工具,数十年来持续提供了全球海洋光学特性、水色和生物地球化学参数的重要数据。随着人工智能的快速发展,基于机器学习模型的水色遥感研究逐渐成为科研领域的新热点。本文回顾了海洋水色遥感中机器学习模型的现状与挑战,并评估了这些模型在大气校正、水色反演、碳循环及数据重构中的应用效果。本文重点综述了机器学习在海洋水色遥感应用中的进展。鉴于卫星传感器长期在轨运行中,可能遭受元器件老化等问题,本文强调了对遥感器进行持续定标和真实性检验的必要性 ...
陈 鹏   +6 more
doaj   +1 more source

A Micro‐Nano Flower‐Like Na3V2(PO4)3@C Constructed by Polar‐Driven H‐Bond Engineering Toward High‐Rate Sodium Storage

open access: yesRare Metals, EarlyView.
ABSTRACT The polyanionic compound Na3V2(PO4)3 (NVP) has emerged as a competitive cathode material for sodium‐ion batteries (SIBs), owing to its high‐voltage redox activity (3.4 V vs. the Na+/Na reference couple) and NASICON‐type framework that enables superior ionic conductivity.
Xiaolei Wu   +5 more
wiley   +1 more source

Response Characteristics of Soil Saturated Hydraulic Conductivity after Returning Orchard to Farmland on the Loess Plateau [PDF]

open access: yes
[Objective] To explore the change rule and influencing factors of soil saturated hydraulic conductivity (Ks) after returning orchard to farmland. [Methods] Aging apple orchards (AO) and orchards with different tillage years (2 a, 4 a, 6 a, 10 a) on the ...
JIA Xiaoxu   +6 more
core   +1 more source

Interfacial Electronic Interactions in Hierarchical Heterostructure Electrocatalyst for Energy‐Saving Hydrogen Production at Industrial Current Densities

open access: yesRare Metals, EarlyView.
ABSTRACT Developing low‐energy‐input electrocatalytic systems for efficient hydrogen production is crucial for advancing sustainable energy technologies. The overall hydrazine splitting (OHzS) has emerged as a promising strategy to reduce the overall energy consumption by replacing the sluggish oxygen evolution reaction.
Haozhou Chen   +13 more
wiley   +1 more source

多因素干扰下森林公园枯落物水文效应

open access: yesShuitu Baochi Xuebao, 2022
为探究森林公园植被的水源涵养能力,为森林公园植被配置和经营管理提供依据,研究选取天龙山森林公园6种林分(油松、山杨、刺槐、油松—侧柏混交林、侧柏—油松—杏树混交和灌木林)为研究对象,通过测定林下枯落物厚度、蓄积量、持水性能和干扰度等指标,研究不同林分类型枯落物水文效应。结果表明:(1)所有林分枯落物干扰度范围为无到中度,厚度范围为0.57~2.63 cm,山杨最厚,侧柏—油松—杏混交林最薄;蓄积量范围为7.20~16.30 t/hm2,油松—侧柏混交林最大,侧柏—油松—杏混交林最小。(2 ...
郑淼, 郭毅, 辛如洁, 李庆华
doaj  

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