Results 61 to 70 of about 497,447 (299)

[Strategies for immunotherapy-related hepatotoxicity in liver cancer]. [PDF]

open access: yesZhonghua Gan Zang Bing Za Zhi, 2023
Zhi Y, Mao YM.
europepmc   +1 more source

中国耕地潜力与保护对策

open access: yes, 1999
本文以马克思地租论为理论基础,以农业经济学、资源经济学、土地经济学和人口经济学的基本原理为指导。采用定性与定量分析方法 ...
任燕
core  

Insights for conservation from the Ecological Knowledge Games project

open access: yesConservation Biology, EarlyView.
Abstract Environmental conservation research requires robust methods for collecting large‐scale behavioral data and engaging diverse stakeholders in decision‐making processes. We (Y.P., A.B.D., and N.B.) created EcoKnowGames (Ecological Knowledge Games), a transdisciplinary project that develops knowledge games for conservation science and data ...
Yuan Pan   +4 more
wiley   +1 more source

Challenges and suggestions for exergaming program in exercise among older adults. [PDF]

open access: yesZhong Nan Da Xue Xue Bao Yi Xue Ban, 2023
Ning H   +5 more
europepmc   +1 more source

Role of funders in embedding tests in conservation practice

open access: yesConservation Biology, EarlyView.
Abstract Effective conservation practice requires decisions based on reliable and relevant evidence, but significant gaps in the evidence base exist. Incorporating well‐designed tests of the effectiveness of interventions for biodiversity in conservation projects is one of the best ways to scale up the rate of evidence generation.
Rebecca K. Smith   +28 more
wiley   +1 more source

LCC-MMC型三端混合直流输电系统控制策略研究

open access: yesGaoya dianqi, 2018
整流侧采用电网换相型换流器(line commutated converter,LCC),逆变侧采用模块化多电平换流器(modular multilevel converter,MMC)的混合型直流输电系统,结合LCC和MMC的优点,尤其适用于特高压直流输电应用场合。为了确保正常状态和故障状态下的稳定运行,文中针对混合型直流输电系统的控制策略进行研究。文中首先针对一个LCC整流站,两个MMC逆变站构成的三端混合直流系统,介绍了数学模型和整个直流系统的基本控制策略。然后针对基本控制策略下 ...
陈凌云   +6 more
doaj  

风水储微电网优化调度策略研究

open access: yesGaoya dianqi, 2020
为了缓解风电因随机波动性对电网造成的冲击,增强风电的可控性,提出一种基于分频段补偿法的风水储微电网优化调度策略。该策略根据水电机组输出带宽,通过小波分解法对风电功率信号进行多尺度分解,得到水电机组和储能系统初级功率指令,再根据水机爬坡能力,对初级功率指令进行修正得到最终功率指令。基于MATLAB/Simulink平台建立了风水储微电网仿真模型,分析了所提调度策略与现有策略的控制效果,结果表明,所提调度策略能减小储能所需容量,降低储能配置成本;改善了微网内水机过渡过程,有利于微网稳定运行 ...
王源, 南海鹏, 关欣
doaj  

加入WTO对我国人力资源开发提出的挑战与应对之策

open access: yes, 1999
加入WTO对我国来说既是机遇又是挑战,本文从三个方面论述了加入WTO对我国人力资源开发的挑战和应采取的对策:1.人力资源开发的战略如何适应“入世”的情况;2.从企业的角度如何适应以上的大形势;3 ...
徐联仓
core  

Habitat and spatial trends of U.K. wintering waterbird populations over 50 years

open access: yesConservation Biology, EarlyView.
Abstract The United Kingdom is an important wintering ground for millions of waterbirds. Most U.K. wintering waterbird populations increased between 1970 and the mid‐1990s, but declined thereafter. We examined U.K. population indices in 46 wintering waterbird species in two 25‐year periods, 1970–1994 and 1995–2019, to identify which waterbird groups ...
Blaise Martay   +8 more
wiley   +1 more source

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