Results 21 to 30 of about 632,703 (135)

溶解润湿动力学的跨尺度研究

open access: yes, 2018
溶解润湿,指液体在可溶解的固体表面发生动态润湿的现象,是一个跨尺度、多场耦合、流固耦合的界面动力学问题,也是能源、生命、军事等重要领域中的瓶颈问题之一。采用跨尺度实验、模拟和理论相结合的方法研究了溶解润湿的动态过程,发现:三相接触线在可溶解固体表面移动,固体粒子在溶剂力作用下溶解到液体之中。固体的溶解不仅为接触线移动提供驱动,导致了固体边界形状的改变,而且向液体输运质量和动量,导致固液界面和液体内部属性的演化。分析了固体粒子进入液体内部对于液滴铺展、液体结构以及液滴内部流场造成的影响。建立了无量纲数空间,
袁泉子, 杨锦鸿, 苗青, 赵亚溥
core   +2 more sources

土壤初始含水率对涌泉根灌土壤水分及氮素运移特性的影响

open access: yesShuitu Baochi Xuebao, 2017
为了探究涌泉根灌水肥一体化灌溉在不同土壤初始含水率下水氮运移特性,通过室内肥液入渗试验,研究了不同土壤初始含水率(4.13%,7.21%,8.77%,11.06%,14.01%)条件下累积入渗量的入渗特性、湿润锋运移、土壤水分以及铵态氮和硝态氮的运移特性,建立了涌泉根灌累积入渗量、各向湿润锋运移距离与不同土壤初始含水率之间的关系,提出了不同初始含水率下涌泉根灌累积入渗量、各向湿润锋运移距离的经验模型。结果表明:累积入渗量、各向湿润锋运移距离以及湿润体内水分和氮素的分布 ...
刘 显   +5 more
doaj  

Integrating Plant Tissue Culture and DNA Barcoding: Cutting‐Edge Technologies for Plant Conservation in Sri Lanka 整合植物组织培养与dna条形码技术:斯里兰卡植物保护的前沿技术

open access: yesIntegrative Conservation, Volume 4, Issue 4, Page 555-568, December 2025.
Sri Lanka's biodiversity is threatened by habitat loss, climate change, and ineffective traditional conservation methods. Integrating plant tissue culture and DNA barcoding offers scalable, precise tools for conserving rare and endemic species. This review emphasizes the potential of biotechnological approaches to enhance conservation accuracy and ...
Mylange Dona Kasundi Mekhala Gunasena   +2 more
wiley   +1 more source

等离子体处理对非织造布表面润湿性的效应

open access: yes四川大学学报. 自然科学版, 2001
通过用等离子体处理非织造布的方法来提高其表面润湿性 .电晕放电和低压辉光放电都对丙纶非织造布表面的润湿性有改善 ,低压辉光放电还对涤纶非织造布表面的润湿性有改善 .电晕放电处理非织造布的表面改性效果及改善维持时间都不如低压辉光放电 .用等离子体处理非织造布来改善其表面润湿性的效果不能维持很长时间 .等离子体处理可减小丙纶、涤纶非织造布表面与水的接触角 ,从而提高其表面的再润湿性 .
蔡兵, 李瑞霞, 吴大诚
doaj  

Spatial Phylogenetic Analysis of Chinese Lizards: Insights Into Ecological Drivers and Conservation Gaps 中国蜥蜴系统发育的空间分析:生态驱动因素与保护空缺

open access: yesIntegrative Conservation, Volume 4, Issue 3, Page 430-441, September 2025.
Our study identifies southern China, including mountainous regions and islands, as key areas rich in phylogenetic diversity, and phylogenetic endemism of lizards that are currently under‐protected. Current protected areas however do not adequately cover regions that are critical for preserving the evolutionary history of lizards.
Tao Liang (梁涛)   +8 more
wiley   +1 more source

肥液浓度对涌泉根灌土壤水氮运移特性的影响

open access: yesShuitu Baochi Xuebao, 2016
为了提高涌泉根灌水肥的利用效率,采用室内土箱入渗试验,探究了不同肥液浓度(0,15,30,60 g/L)条件下湿润锋运移、土壤水分及氮素分布的规律。结果表明:入渗相同时间时,随着肥液浓度的增大,湿润锋运移距离、湿润体内相同节点处的土壤含水率、铵态氮及硝态氮质量分数均增大;湿润锋运移距离与入渗时间具有显著的幂函数关系,其决定系数均达到0.99;随着肥液入渗再分布的进行,湿润体内含水率分布更加均匀,最大含水率位置下移,铵态氮量逐渐减小,再分布5 d湿润体内硝态氮量达到最大值,硝态氮运移规律和水分相似 ...
刘 显, 费良军, 刘 扬, 王 昌
doaj  

浑水膜孔灌入渗特性与致密层形成特性

open access: yesShuitu Baochi Xuebao, 2022
水中带沙是浑水灌溉较清水灌溉的本质区别, 为揭示浑水灌溉的节水减渗机制, 通过浑水膜孔灌自由入渗室内试验, 以清水入渗为对照, 研究了浑水膜孔灌入渗能力、湿润锋运移距离、湿润体含水率、致密层土壤颗粒组成及落淤层厚度等随入渗时间的变化规律, 提出了土壤含水率与湿润锋运移距离之间的量化模型, 分别建立了落淤层厚度与入渗时间、滞留层的滞留量与滞留深度之间的关系。结果表明: 浑水泥沙对土壤水分入渗的影响较大, 在入渗结束时浑水较清水的累积入渗量减幅达27.83%;土壤含水率从膜孔中心到湿润锋面逐渐减小 ...
钟韵   +6 more
doaj  

Identification of Priority Areas for Conservation of Threatened Agamid Lizards of Sri Lanka Using Species Distribution Modeling 斯里兰卡濒危蜥蜴 (鬣蜥科) 保护优先区域的识别:基于物种分布模型的研究

open access: yesIntegrative Conservation, Volume 4, Issue 2, Page 188-204, June 2025.
We assessed the distribution of 14 threatened agamid lizard species using Species Distribution Modeling to identify hotspots for these species' conservation. Based on the results, high‐priority areas of threatened agamids were projected to occur specially in the wet zone.
Iresha Wijerathne   +10 more
wiley   +1 more source

滴灌条件下水土温度对覆砂土壤水热运移影响的数值模拟

open access: yesShuitu Baochi Xuebao, 2020
为探究滴灌条件下水温与土温对覆砂土壤水热运移规律的影响,基于HYDRUS-2D构建了不同水土温度土壤水热运移数值模型,模拟分析了不同水土温度对覆砂土壤水分、温度动态变化的影响。结果表明:灌溉水温对土壤水热分布影响显著,随着温度升高,土壤湿润体内含水率减小,表现为35℃水温 < 20℃水温 < 5℃水温,灌溉水温对土壤剖面温度分布也有较大影响,表层0—15 cm范围内温度变化了5~10℃。相同水温条件下,随着土壤温度升高,土壤饱和导水率增大,湿润土体内体积含水率减小,表现为30℃土壤温度 < 15 ...
虎军宏   +3 more
doaj  

The enigmatic life history of the bamboo explained as a strategy to arrest succession

open access: yesEcological Monographs, Volume 94, Issue 4, November 2024.
Abstract Bamboos are perennial woody grasses that display an enigmatic mix of traits. Bamboo is highly shade intolerant like early‐successional trees. Without secondary xylem, bamboos cannot continue to grow once they reach a maximum height or replace xylem damaged by hydraulic stress and must instead replace each stem after a few years using ...
Aiyu Zheng, Stephen W. Pacala
wiley   +1 more source

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