Results 51 to 60 of about 70,671 (203)
Comprehensive framework for assessing and optimizing existing research networks
Conservation Biology, EarlyView.Abstract Conservation, monitoring, and research networks, or collections of ecological research sites unified under a common mission of data collection or a research mission, are essential infrastructure for understanding large landscapes. However, most networks developed opportunistically over decades rather than through systematic design, creating ...
Alyson East +2 more
wiley +1 more source
A Comparative Study on Financial Performance and Financial Policy between China Shipbuilding Industry Group Power Co., Ltd and Camel Group Co., Ltd [PDF]
, 2016 2009年，中国汽车销量达到1364万辆，同年美国汽车销量1060万辆，中国首次超越美国成为世界第一汽车销售市场，汽车电池是汽车必不可少的储能配件。本论文基于“利润-现金-价值-风险-成长”的财务管理理念，以财务报表为基础，对中国动力和骆驼股份两家中国最大的起动用铅酸电池厂家的财务绩效和财务政策进行比较研究，为利益相关者的决策提供依据。 本论文共8章，第一章为研究概述。第二章为行业分析。第三章为公司情况。第四章通过财务报表三维分析来分析财务状况的结构和趋势。第五章中运用五大类财务比率指标 ...
陈榴信
core
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
Clone、construction and expression of Synechocystis sp.PCC 6803 Acetyl- CoA carboxylase gene for fat production [PDF]
, 2016 在化石燃料日益枯竭、环境污染逐渐威胁人类生存的今天，生物柴油在提供可再生能源的同时还可以减少温室气体，从而受到世界各国的广泛重视。蓝藻为光合自养微生物，是大气碳循环主要贡献者，其生物柴油产量是油料作物的8～24倍。乙酰辅酶A羧化酶(acetyl-coenzymeAcarboxylase，ACCase)是生物体内脂肪生物合成的关键酶，研究发现，过量表达ACCase能够促进生物体脂肪的合成。相对于蓝藻，大肠杆菌具有遗传背景清楚、生长速度快等特点 ...
周赞虎
core
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
Learner‐Focused Strategy Instruction From the Teachers’ and the Learners’ Perspective
International Journal of Applied Linguistics, EarlyView.ABSTRACT Numerous large‐scale quantitative studies have been conducted to yield a macro‐level picture of the effectiveness of strategy instruction. However, little is understood about learners' actual processing of strategy instruction and interaction with the teachers delivering it.
Isobel Kai‐Hui Wang, Andrew D. Cohen
wiley +1 more source
Diversification Configuretion of Ethylene Cracking Feedstock for Integration of Refining-Chemical Industry [PDF]
, 1900 随着石油化工的不断发展，我国石油和化工行业的市场竞争、资源配置也 正在发生一些重要的趋势性变化，炼化行业发展面临着传统石化产品需求增速 下降、产能过剩矛盾突出、要素驱动力日益减弱、资源环境约束进一步强化、 不稳定不确定因素进一步增加等一系列严峻挑战。作为应对措施之一，炼油化 工一体化已成为石化工业发展的一种趋势和战略选择，随着乙烯产能不断增大， 乙烯裂解原料需求量越来越大，如何充分发挥炼化一体化优势，更加有效地利 用炼厂各种有限资源，满足乙烯原料需求，提高企业整体效益是石化行业面临 的重大课题 ...
韩晓宏
core
Narrative power in the narrative policy framework
Policy Studies Journal, EarlyView.Abstract The Narrative Policy Framework lacks clear and empirical explanations of power. Yet, the study of narratives is inherently the study of power in shaping policy outputs and decisions. We develop a conceptual model positing that expressions of power (power to, with, and over) may be discovered in narrative constructs (e.g., narrative structure ...
Elizabeth A. Shanahan +8 more
wiley +1 more source
A new type of cucumber variety – early ripening by breeding female cucumber hybrids [PDF]
, 1995 摘要利用雌性系Wl 5207G 为母本, 长春密刺选系(9一1一3一4一l) 为父本配制的黄瓜一代杂种早抗, 具有极早熟、耐低温、弱光能力强、抗病性好、品质优等特点。 长江流域春季大棚栽培每666.7m2 产量达4000kg, 比宁丰3 号增产19.1%, 冬一季日光温室栽培可达5000kg 以上。目前已推广到国内10 多个省市, 推广面积约13 3.3 hm2。关键词黄瓜; 早抗 ...
Lu, C, Xu, H, Yang, R, Yu, W
core
Policy Studies Journal, EarlyView.ABSTRACT Despite extensive research on policy diffusion, the ways in which policy attention influences this process remain underexplored. This study addressed this gap by distinguishing between three types of policy attention—political speeches, policy issuance and field visits—and investigating their differential impacts when delivered by central and ...
Xiangning Chen, Yahua Wang
wiley +1 more source