Results 61 to 70 of about 164,546 (209)
"fordi før så skreiv æ Å-G". En studie om andreklassingers valg av stavemåter.
, 2023 The purpose of this master's thesis has been to look at the choices students in Year 2 make when spelling words. The students participating in this research are in the transition between phonological and orthographic writing, and the study will focus on how these students adopt different spelling strategies. The assignment's data material is taken from
openaire +1 more source
Multi-wavelength Emissions for Sgr A* and Low-Luminosity Active Galactic Nuclei [PDF]
, 2015 黑洞吸积一直是高能天体物理的一个重要过程。本文主要讨论了Sagittarius~A$^\star$(\sgra)的宁静态和耀发态，以及低光度活动星系核系统的多波段辐射，寄希望于对\sgra\的吸积和抛射过程，以及低光度活动星系核的中心引擎有一个统一深入的理解。本文可以主要分为以下四个部分： 在第二章，我们利用现有的法拉第旋转量（RM）观测讨论了\sgra\的喷流模型。在过去二十多年里，已经有多个理论模型被用来解释\sgra\的宁静态辐射。辐射低效吸积流和喷流模型是其中的两个竞争模型。利用对\sgra ...
李亚平
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Informing spatial conservation prioritization with species’ traits
Conservation Biology, EarlyView.Abstract New Guinea, the most botanically diverse island on the planet, is the location for one of the boldest conservation initiatives. The Manokwari Declaration aims to achieve 70% conservation designation for the Bird's Head Peninsula. This is 40% higher than the 2022 Global Biodiversity Framework target.
Liam A. Trethowan +27 more
wiley +1 more source
[[alternative]]A Mixture Stochastic Frontier Model and Its Application on Economic Growth [PDF]
計畫編號：NSC93-2415-H032-011研究期間：200408~200507研究經費：298,000[[abstract]]本研究計畫提出一個新的混合型隨機邊界模型，用以估計經濟成長模型及其中蘊含的假 說。經濟成長模型的實証研究已是重要的主流文獻之一，但絕大多數的估計方法不外乎 一般線性的計量模型。Kumar and Russell (2002) 提出了一個新的觀點，把經濟成長的議 題視為邊界模型的一個應用。該文章乃以無母數的資料包絡法來對邊界模型進行分析。 本研究計畫將承接Kumar and ...
陳怡宜
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Representation of obligate groundwater‐dwelling copepod diversity in European protected areas
Conservation Biology, EarlyView.Abstract Groundwaters sustain diverse surface ecosystems and are populated by metazoan species, mostly invertebrates, that provide fundamental ecological functions and are often of prominent conservation value due to narrow endemism and high phylogenetic rarity.
Francesco Cerasoli +7 more
wiley +1 more source
Studies of the PPDF Chemical Reaction Rate Model for the Numerical Simulation of Nitrogen Oxides [PDF]
, 2016 本文在目前应用广泛的湍流燃烧模拟方法PPDF，即预设概率密度函数的基础上，以混合分数和温度为变量，同时引入时间尺度的考虑，提出了一个NOx计算模型——PPDF化学反应速率模型。在该模型的理论基础上，使用CHEMKIN软件的SENKIN模块，以详细的化学反应机理计算NO的生成速率，并将计算结果拟合建立成数据库。 使用该模型在STAR-CD中计算了三组湍流非预混射流火焰：H2、H2/CO/N2和CH4/H2/N2射流火焰，并与Sandia实验室公布的实验数据进行比较 ...
封颖
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Conservation Biology, EarlyView.Abstract In the western United States, conservation practitioners are increasingly working with private landowners to restore habitat for North American beavers (Castor canadensis) and to use nonlethal mitigation techniques when beavers damage crops and infrastructure.
Brian D. Erickson, Megan S. Jones
wiley +1 more source
The establishment of new organ transplant models for immune rejection and the exploration of the mechanisms of transplantation immunity [PDF]
, 2015 目的：建立两种新型的器官移植排斥反应模型，即树鼩异种心脏移植模型以及使用套管法建立新型小鼠主动脉移植模型，并分别对这两种器官移植模型中的异种移植免疫排斥机制和慢性排斥反应机制进行初步探索。 方法：1.采用腹部异位心脏移植的方法建立树鼩到SD大鼠，SD大鼠到树鼩的异种心脏移植模型，对比树鼩与大鼠的解剖数据，分析模型的可行性，观察移植心脏的生存期及病理变化，观察模型的免疫排斥反应类型，进行免疫组化、微量淋巴毒实验、混合淋巴实验以进行机制的初步探讨。2.利用套管法将供体BALB ...
伍源
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Conservation Biology, EarlyView.Abstract Despite the crucial role of human impacts on biodiversity loss, many assessments of this loss focus on single metrics, such as species richness, and overlook the multidimensional effects of human activities. Because of its importance to ecosystem functioning, we investigated the functional diversity of medium‐ and large‐sized mammal ...
Xueyou Li +8 more
wiley +1 more source
Zhongguo shiyan zhenduanxue在腰椎间盘突出症（lumbar disc herniation,LDH）领域，实验动物模型的建立至关重要。本文综合评估了不同类型的LDH动物模型。腰椎间盘退行性病变模型模拟了LDH的早期发病机制，LDH模型则可分为压迫性模型和非压迫性模型。总体而言，不同实验动物模型在模拟LDH病理过程中各具特点，为疾病机制研究和药物开发提供了重要的参考借鉴。未来研究可进一步优化不同模型，以更好地模拟临床情况，促进相关研究进一步发展。
曹卓妍 +4 more
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