Results 81 to 90 of about 173,183 (227)

汉代编钟制作与应用研究 [PDF]

open access: yes, 2014
春秋战国是编钟制作应用的鼎盛时期,而汉代以后钟乐则在总体上走向了衰落.目前学术界对此历史变化还缺少全面系统的研究.拟结合对现存实物及画像石等内容及社会背景的考察,来讨论汉代编钟的制作和应用规范问题,从制作技术、音律、配伍组合应用、应用等级规定和礼仪之外的应用等方面揭示汉代钟乐面貌 ...
关晓武
core  

Effects of landscape context on avian specialist response to increased surface temperature in protected areas

open access: yesConservation Biology, EarlyView.
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

熔盐法制备纳米六方氮化硼片的研究

open access: yesHe jishu
六方氮化硼具有与石墨烯类似的六元环组成的片层结构,因而呈现出优异的机械性能和导热性能,在诸多应用领域受到广泛关注。基于六方氮化硼制备工艺的高能耗问题,本文旨在提出一种更加绿色、低能耗的制备工艺。本工作使用熔盐介质法作为制备工艺方法:以氯化钾-氯化钠(KCl-NaCl)为熔盐体系,三聚氰胺(C3N6H6)和硼酸(H3BO3)为反应物,通入氮气(N2)作为反应气体。该研究通过改变熔盐与反应物质量比、反应物中氮-硼摩尔比、保温温度、保温时间等条件,系统研究了不同条件对制备六方氮化硼产物的影响 ...
黄 宇灿   +5 more
doaj   +1 more source

Calibration of the species threat abatement and restoration metric's threat abatement component in a Costa Rican landscape

open access: yesConservation Biology, EarlyView.
Abstract Achieving global conservation policy goals requires the ability to set and measure progress toward science‐based targets for biodiversity. The species threat abatement and restoration (STAR) metric was developed to enable actors to set science‐based targets for species.
Louise Mair   +17 more
wiley   +1 more source

高温熔盐微通道换热器的热工水力特性研究

open access: yesHe jishu
小型模块化熔盐堆具有广泛的发展前景,但由于受到空间尺寸、传热效率和高温工作环境的限制,对熔盐换热器的性能提出了较高的要求。因此对不同微通道换热结构在高温环境下的流动换热特性的研究具有重要意义。本研究采用数值模拟方法,以熔盐(FNaBe)-超临界二氧化碳(SCO2)换热器为研究对象,在FNaBe熔盐侧分别采用Z型和波浪型等两种板翅式通道结构,在SCO2侧分别采用椭圆翅片和翼型翅片两种通道结构,对4种通道结构的整体和局部流动传热特性进行了研究分析。研究结果表明:熔盐侧Z型流道具有更强的传热性能 ...
李 哲, 陈 玉爽, 杨 晓虹
doaj   +1 more source

Biodiversity‐driven spatial conservation planning to delineate temporally stable regions

open access: yesConservation Biology, EarlyView.
Abstract The accelerating loss of biodiversity underscores the critical need for effective conservation strategies, particularly in the face of climate change and anthropogenic pressures. We devised a conservation planning framework that adopts a temporal stacking approach to species distribution models and landscape connectivity analyses. These models
Mattia Iannella   +5 more
wiley   +1 more source

Defining and identifying relevant stakeholders to advance effective conservation

open access: yesConservation Biology, EarlyView.
The challenge of defining stakeholders in environmental science and an approach for refining existing definitions. Abstract Stakeholder is a contested term that has spawned a multitude of ad hoc definitions. The ambiguity of these definitions has oftentimes impeded transdisciplinary research in environmental governance and conservation science because ...
Milan Büscher   +5 more
wiley   +1 more source

Perceived costs as drivers of wildlife management preferences in rural Tanzanian communities

open access: yesConservation Biology, EarlyView.
Abstract Effectively managing human–wildlife interactions is crucial for fostering coexistence on shared landscapes. Management options are most effective when aligned with the preferences of people directly affected by wildlife, yet little is known about how socioecological factors influence these preferences.
Christian Kiffner   +10 more
wiley   +1 more source

Palette-based image recoloring based on moving least squares(基于移动最小二乘的图像重着色)

open access: yesZhejiang Daxue xuebao. Lixue ban
In recent years, palette-based image recoloring techniques have garnered widespread attention and application across various domains such as graphic design, photo editing, and advertising production.
周家伟(ZHOU Jiawei)   +5 more
doaj   +1 more source

Drivers of bat researchers’ intent to adopt field hygiene practices

open access: yesConservation Biology, EarlyView.
Abstract Infectious disease is a growing threat to wildlife, with zoonotic transmission most likely at the human–wildlife interface. One underappreciated activity at this interface is fieldwork with wild animals, but associated risks can be mitigated through field hygiene (FH) practices, such as using personal protective equipment and other appropriate
Joanna L. Coleman   +6 more
wiley   +1 more source

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