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绿色混合数字计算机电源管理

今日电子 2012年第10期 48-52页

作者： Chun Cheung Weihong Qiu Miller Greg jason lin Huang Yi Intersil公司

图1所示的模拟电源解决方案是一种众所周知和经过实践检验的技术，功率电子工程师在时域中理解起来毫不费力。模拟PWM控制器包括一个误差放大器，用一些电阻和电容构成补偿网络。通过对电阻和电容值进行微调可实现最佳性能。模拟PWM控... 详细信息

图1所示的模拟电源解决方案是一种众所周知和经过实践检验的技术，功率电子工程师在时域中理解起来毫不费力。模拟PWM控制器包括一个误差放大器，用一些电阻和电容构成补偿网络。通过对电阻和电容值进行微调可实现最佳性能。模拟PWM控制器提供快速和准确控制，人们开发了许多先进的模拟控制方案来实现最佳性能，特别是在瞬态要求非常严格的微处理器核心电源应用中。其针对核心及外设电源应用的简单性、易用性和低成本是无可替代的。

关键词：电源管理数字计算机 PWM控制器模拟电源混合最佳性能误差放大器微处理器核

Renewable biomass reinvigorates sustainable water-energy nexus

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Science Bulletin 2024年第16期69卷 2543-2554页

作者： Hongxu Chen Jiatao Xu Zhiyong jason Ren Hailong lin Leli Zhang EReaihan Yanhao Yuan Zihan Wang Zhidan Liu Laboratory of Environment-Enhancing Energy(E2E) College of Water Resources and Civil EngineeringChina Agricultural UniversityBeijing 100083China Key Laboratory of Agricultural Engineering in Structure and Environment Ministry of Agriculture and Rural AffairsBeijing 100083China Department of Civil and Environmental Engineering Princeton UniversityPrinceton NJ 08544USA Andlinger Center for Energy and the Environment Princeton UniversityPrinceton NJ 08544USA Department of Earth and Environmental Engineering Columbia UniversityNew York NY 10027USA State Key Laboratory of Efficient Utilization of Agricultural Water Resources Beijing 100083China

The water-energy nexus has garnered worldwide *** dual-functional research aimed at coproducing freshwater and electricity faces significant challenges,including sub-optimal capacities("1+1lination and robust clean electricity *** hydrothermally activated basswood,our solar desalination exceeded the 100% efficiency bottleneck even under reduced solar *** simple size-tuning,we achieved a high evaporation rate of 3.56 kg h^(-1)m^(-2)and an efficiency of 149.1%,representing 128%-251% of recent values without sophisticated surface *** incorporating an electron-ion nexus with interfacial Faradaic electron circulation and co-ion-predominated micro-tunnel hydrodynamic flow,we leveraged free energy from evaporation to generate long-term electricity(0.38 W m^(-3)for over 14 d),approximately 322% of peer performance *** inter-functional nexus strengthened dual functionalities and validated general engineering *** presented strategy holds significant promise for global human–society–environment sustainability.

关键词： Biomass Water-energy nexus Solar desalination Clean energy Hydrothermal carbonization Sustainable development

Elevated brain temperature under severe heat exposure impairs cortical motor activity and executive function

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Journal of Sport and Health Science 2024年第2期13卷 233-244页

作者： Xiang Ren Tan Mary C.Stephenson Sharifah Badriyah Alhadad Kelvin W.Z.Loh Tuck Wah Soong jason K.W.Lee Ivan C.C.Low Health and Social Sciences Singapore Institute of TechnologySingapore 138683Singapore Human Potential Translational Research Programme Yong Loo Lin School of MedicineNational University of SingaporeSingapore 117597Singapore Centre for Translational Magnetic Resonance Research Yong Loo Lin School of MedicineNational University of SingaporeSingapore 117549Singapore Department of Physiology Yong Loo Lin School of MedicineNational University of SingaporeSingapore 117593Singapore Heat Resilience and Performance Centre Yong Loo Lin School of MedicineNational University of SingaporeSingapore 117510Singapore N.1 Institute for Health National University of SingaporeSingapore 117456Singapore Campus for Research Excellence and Technological Enterprise(CREATE) Singapore 138602Singapore

Background:Excessive heat exposure can lead to hyperthermia in humans,which impairs physical performance and disrupts cognitive *** heat is a known physiological stressor,it is unclear how severe heat stress affects brain physiology and ***:Eleven healthy participants were subjected to heat stress from prolonged exercise or warm water immersion until their rectal temperatures(T_(re))attained 39.5℃,inducing exertional or passive hyperthermia,*** a separate trial,blended ice was ingested before and during exercise as a cooling *** were compared to a control condition with seated rest(normothermic).Brain temperature(T_(br)),cerebral perfusion,and task-based brain activity were assessed using magnetic resonance imaging ***:T_(br)in motor cortex was found to be tightly regulated at rest(37.3℃±0.4℃(mean±SD))despite fluctuations in T_(re).With the development of hyperthermia,T_(br)increases and dovetails with the rising T_(re).Bilateral motor cortical activity was suppressed during high-intensity plantarflexion tasks,implying a reduced central motor drive in hyperthermic participants(T_(re)=38.5℃±0.1℃).Global gray matter perfusion and regional perfusion in sensorimotor cortex were reduced with passive *** function was poorer under a passive hyperthermic state,and this could relate to compromised visual processing as indicated by the reduced activation of left lateral-occipital ***,ingestion of blended ice before and during exercise alleviated the rise in both T_(re)and T_(bc)and mitigated heat-related neural ***:Severe heat exposure elevates T_(br),disrupts motor cortical activity and executive function,and this can lead to impairment of physical and cognitive performance.

关键词： Brain functional activity Cognition Heat stress Hyperthermia Motor function

RNA methylation regulates hematopoietic stem and progenitor cell development

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Journal of Genetics and Genomics 2017年第10期44卷 473-474页

作者： jason Ear Shuo lin Department of Molecular Cell and Developmental Biology University of California Los Angeles 90095 CA USA

Methylation of adenosine base on the nitrogen-6 position （N6-methyladenosine, m^6A） is the most common and abundant modification on mRNA transcripts. This post-transcriptional modification was first described in the... 详细信息

关键词： RNA methylation regulates hematopoietic stem and progenitor cell development

Meter-scale variation within a single transect demands attention to taxon accumulation curves in riverine microbiome studies

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Frontiers of Environmental Science & Engineering 2022年第5期16卷 115-125页

作者： Bingdi Liu lin Zhang jason H.Knouft Fangqiong ling Department of Energy Environmental and Chemical EngineeringWashington University in St.LouisSt.LouisMO 63130USA Department of Biology Saint Louis UniversitySt.LouisMO 63103USA National Great Rivers Research and Education Center East AltonMO 62035USA Department of Computer Science and Engineering Washington University in St.LouisSt.LouisMO 63130USA Division of Biological and Biomedical Sciences Washington University in St.LouisSt.LouisMO 63110USA Division of Computational and Data Science Washington University in St.LouisSt.LouisMO 63130USA

Microbial communities inhabiting river ecosystems play crucial roles in global biogeochemical cycling and pollution *** variations in local microbial assemblages are important for detailed understanding of community assembly and developing robust biodiversity sampling ***,we intensely analyzed twenty water samples collected from a one-meter spaced transect from the near-shore to the near-center in the Meramec River in eastern Missouri,USA and examined the microbial community composition with 16S rRNA gene amplicon *** microbiomes across the transect exhibited extremely high similarity,with Pearson’s correlation coefficients above 0.9 for all pairwise community composition ***,despite the high similarity,PERMANOVA revealed significant spatial differences between near-shore and nearcenter communities(p=0.001).Sloan’s neutral model simulations revealed that within-transect community composition variation was largely explained by demographic stochasticity(R^(2)=0.89).Despite being primarily explained by neutral processes,LefSe analyses also revealed taxa from ten families of which relative abundances differed directionally from the bank to the river center,indicating an additional role of environmental ***,the local variations within a river transect can have profound impacts on the documentation of alpha ***-accumulation curves indicated that even twenty samples did not fully saturate the sampling effort at the genus level,yet four,six and seven samples were able to capture 80%of the phylum-level,family-level,and genus-level diversity,*** study for the first time reveals hyperlocal variations in riverine microbiomes and their assembly mechanisms,demanding attention to more robust sampling strategies for documenting microbial diversity in riverine systems.

关键词： Microbiome Freshwater Taxon accumulation curve Community assembly

ONVIF、PSIA与HDcctv在安防行业各有专长互补不足

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A&S（安全&自动化） 2010年第7期 69-69页

作者：林佑祺(jason lin) 慧友电子(北京)股份有限公司

三大标准联盟在网络和闭路高清中仍壁垒分明目前ONVIF、PSIA与HDcctv仍旧是壁垒分明，分别在网络与闭路高清中扮演重要的角色。网络部分，***带给网络监控最明显的好处就是统一了标准。

关键词：安防行业网络监控互补闭路标准

基于双频段雷达高度计数据的海面阵风反演研究

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海洋学报 2024年第4期46卷 133-142页

作者：林静张有广国家海洋环境预报中心北京100081 国家卫星海洋应用中心北京100081

海面阵风是海洋资源开发、海洋防灾减灾和海洋科研等领域所需的重要海洋动力环境信息。但迄今为止,海面阵风观测数据严重缺失,阻碍了阵风预报、应用研究等方面的发展。本文利用双频的HY-2B卫星高度计C、Ku波段的后向散射系数,对现有海... 详细信息

海面阵风是海洋资源开发、海洋防灾减灾和海洋科研等领域所需的重要海洋动力环境信息。但迄今为止,海面阵风观测数据严重缺失,阻碍了阵风预报、应用研究等方面的发展。本文利用双频的HY-2B卫星高度计C、Ku波段的后向散射系数,对现有海面风速(U_(10))进行修正,建立了阵风风速(U_(g))反演算法。反演结果与美国国家浮标数据中心(NDBC)2018-2022年的浮标数据进行真实性检验,相关系数(R)为0.91,均方根误差(RMSE)为1.82 m/s;国外同类卫星jason-3基于本方法的反演结果与2018-2022年NDBC站点数据进行检验,RMSE优于常规2 m/s精度要求;反演结果与处于不同纬度的近海远洋站点进行个例验证,RMSE均优于2 m/s。因此,本文在现有的HY-2B卫星高度计海面风速观测数据的基础上,利用不同波段信息实现了海面阵风的观测,具有较高的观测精度。同时,该方法也适用于相同观测体制的国外卫星高度计。

关键词：雷达高度计反演算法海面阵风 HY-2B卫星后向散射系数

Mechanism of progressive broad deformation from oceanic transform valley to off-transform faulting and rifting

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The Innovation 2022年第1期3卷 62-70页

作者： Fan Zhang Jian lin Zhiyuan Zhou Hongfeng Yang jason P.Morgan Key Laboratory of Ocean and Marginal Sea Geology South China Sea Institute of OceanologyInnovation Academy of South China Sea Ecology and Environmental EngineeringChinese Academy of SciencesGuangzhou 510301China Department of Ocean Science and Engineering Southern University of Science and TechnologyShenzhen 518055China Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou) Guangzhou 511458China Department of Geology and Geophysics Woods Hole Oceanographic InstitutionWoods HoleMA 02543USA Earth System Science Programme The Chinese University of Hong KongShatinHong Kong 999077China

Oceanic transform faults(TFs)are commonly viewed as single,narrow strikeslip seismic faults that offset two mid-ocean ridge ***,broad zones of complex deformation are ubiquitous at ***,we propose a new conceptual model for the progressive deformation within broad zones at oceanic TFs through detailed morphological,seismic,and stress *** argue that,under across-transform extension due to a change in plate motion,plate deformation occurs first along high-angle transtensional faults(TTFs)within the transform ***-transform normal faults(ONFs)form when across-transform deviatoric extensional stresses exceed the yield strength of the adjacent oceanic *** further extension,these normal faults can develop into off-transform rift zones(ORZs),some of which can further develop into transform plate *** illustrate that such progressive complex deformation is an inherent feature of oceanic *** new conceptual model provides a unifying theory to explain the observed broad deformation at global transform systems.

关键词： oceanic valley seismic

Methodology of the Global Adult Tobacco Survey in China, 2010

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Biomedical and Environmental Sciences 2010年第6期23卷 445-450页

作者： jason HSIA GONG-HUAN YANG QIANG LI lin XIAO VAN YANG YAN-WEI WO SAMIRAASMA Office On Smoking And Health Centers For Disease Control And Prevention Atlanta Ga USA National Tobacco Control Office Chinese Center For Disease Control And Prevention Beijing 100050 China University Of Waterloo Waterloo Ontario Canada World Health Organization Country Office Beijing China

INTRODUCTION The Global Adult Tobacco Survey （GATS） is a component of Global Tobacco Surveillance System （GTSS） under auspices of the Bloomberg philanthropy and the Bill and Melinda Gates Foundation. GATS is a household survey with a standard protocol and its goals are to measure tobacco use, to assess changes due to policy and to facilitate cross country comparison. China is the largest consumer and producer of tobacco in the world. China was selected as one of 14 countries of high burden of tobacco use, large population, and mostly low income, to conduct the GATS.

关键词： GATS Methodology of the Global Adult Tobacco Survey in China 2010