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Analysis of a rainwater harvesting system for domestic water supply in Zhoushan,China

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2010年第5期11卷 342-348页

作者： Yong-chao ZHOU wei-yun shao Tu-qiao ZHANG Institute of Municipal Engineering Zhejiang University Hangzhou 310058 China

The domestic rainwater harvesting system (DRHS) is an important freshwater source for Zhoushan,China to meet water demands. A computer model has been generated to analyze the performance of the DRHS with different ratios of D/(AR) (water demand/average annual collected runoff) and S/(AR) (storage capacity/average annual collected runoff). The performance of the DRHS was analyzed by means of the model simulation,which is described by its water shortage rate (WSR) and water loss rate (WLR). Using the data,a set of dimensionless design calculation chart is introduced. When the water demand and requirement of the design are known,the established chart can be used to easily determine the storage capacity and catchment (roof and other surface) area required to achieve a desired performance level.

关键词： Domestic rainwater harvesting system (DRHS) Performance Simulation Zhoushan

Two-dimensional pipe leakage through a line crack in water distribution systems

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2013年第5期14卷 371-376页

作者： Shuai GUO Tu-qiao ZHANG wei-yun shao David Z.ZHU Yuan-yu DUAN College of Civil Engineering and Architecture Zhejiang University Deptment of Civil and Environmental Engineering University of AlbertaEdmontonABT6G 2W2Canada

In water distribution systems,water leakage from cracked water pipes is a major concern for water ***,the relationship between the leakage rate and the water pressure can be modeled by a power function developed from the orifice *** paper presents an approximate solution for the computation of the steady-state leakage rate through a longitudinal line crack of a water distribution pipe considering the surrounding soil *** derived solution agrees well with results of numerical *** with the traditional models,the new solution allows assessment of all the parameters that related with leakage including the pressure head inside the pipe,hydraulic conductivity,crack size and its position,and pipe size and its depth.

关键词： Leakage Pipe crack Soil Water distribution systems Water pipes

基于数值模拟的阶梯水流中行人安全撤离研究(英文)

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2015年第2期16卷 117-130页

作者： wei-yun shao Li-jie JIANG Lei FANG David Z. ZHU Zhi-lin SUN College of Civil Engineering and Architecture Zhejiang University Zhejiang Design Institute of Water Conservancy & Hydroelectric Power Department of Ocean Science and Engineering Zhejiang University Department of Civil and Environmental Engineering University of Alberta

目的:研究不同形式阶梯水流中被困人员的安全撤离,为地下空间水侵灾害脆弱性评价及防灾避灾提供参考。方法:根据试验结果和数值模型的相关理论构建数值模型,验证数值模拟阶梯水流流场的可靠性和合理性,并基于数值模型的灵活性和可变性,... 详细信息

目的:研究不同形式阶梯水流中被困人员的安全撤离,为地下空间水侵灾害脆弱性评价及防灾避灾提供参考。方法:根据试验结果和数值模型的相关理论构建数值模型,验证数值模拟阶梯水流流场的可靠性和合理性,并基于数值模型的灵活性和可变性,模拟休息平台、阶梯坡度和阶梯形态对水流流场的影响,据此对有无休息平台、不同阶梯坡度和不同阶梯形态下阶梯水流流态、流速分布以及对被困人员的安全撤离的影响进行深入分析。结论:中间休息平台的存在增加了被困人员撤离的风险;阶梯坡度对阶梯上水流的水力特性影响很小;L型阶梯中间休息平台有利于减小平台下游撤离风险,被困人员可以优先选择L型阶梯或者不含休息平台的直线型阶梯撤离。

关键词：阶梯休息平台水侵灾害逃生数值模拟

PMS777 attenuates LPS-induced acute neuroinflammation

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PMS777 attenuates LPS-induced acute neuroinflammation

中国神经科学学会第四次会员代表大会暨第八届全国学术会议

作者： Jin-Jia HU,Juan LI,Zhang wei,Bi-yun shao,Ding-Wen LONG,Hong-Zhuan CHEN~* Department of Anatomy and Pharmacology,Shanghai Jiaotong University,Shanghai 200025,China

The proinflammagen lipopolysaccharide(LPS) injected into the forth ventricle could induce acute neuroinflammation in the whole brain of *** current study determined whether the new compound PMS777—a platelet-activating factor receptor(PAFR) antagonist and acetylcholinesterase(AChE) inhibitor could provide significant neuroprotection against the cytotoxic effects of LPS-induced *** LPS infusions impared recognition, decreased the number of AChE positive cells,and increased the number of OX-42 immunoreactive microglia and GFAP immunoreactive cells in hippocampus,cortex and basal *** LPS infusions also impaired organelle of protein *** administration of PMS777(i.P.) significantly protected against the recognition impairment,attenuated the cytotoxic effects of the acute inflammatory processes upon cholinergic cells,microglia,astrocytes and ultrastructure of hippocampal *** we report that the cytotoxic effects of acute neuroinflammation may involve PAF releasing and loss of cholinergic neurons,leading to the neuronal dysfunction and spatial memory *** dual PAFR AChE inhibitors could provide excellent neuroprotection from the cytotoxic effects induced by LPS.

关键词： neuroinflammation spatial memory acetylcholinesterase platelet-activating factor ultrasturcture

来源： cnki会议评论

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深圳市坪山新区居民膳食碘摄入量评估

中国地方病防治 2016年第7期31卷 742-744页

作者：符茂真韦少云黄薇罗琼琳深圳市坪山新区疾病预防控制中心广东518118 深圳市疾病预防控制中心

目的分析、评估坪山新区居民碘摄入情况,为指导居民科学补碘提供依据。方法以多阶段分层整群随机抽样方法抽取90户居民,采用称重法和三日记账法开展膳食调查。根据调查结果制备食品样品进行碘含量的检测。结果坪山新区居民标准人日碘摄... 详细信息

目的分析、评估坪山新区居民碘摄入情况,为指导居民科学补碘提供依据。方法以多阶段分层整群随机抽样方法抽取90户居民,采用称重法和三日记账法开展膳食调查。根据调查结果制备食品样品进行碘含量的检测。结果坪山新区居民标准人日碘摄入量168.3μg/d,各年龄组碘摄入量与推荐量差异无统计学意义;14岁以上人群碘摄入量性别间差异无统计学意义;人群不同活动强度间摄入量差异无统计学意义。结果显示,人群中碘摄入量分布极不均匀,17.92%的人碘摄入在推荐摄入量(RNI)范围之内,77.67%的人存在碘摄入不足的风险。结论坪山新区居民存在碘摄入不足的风险,应加大对碘缺乏造成危害严重性的宣传教育,重点关注孕产妇及婴幼儿碘的摄入,促进人体健康。

关键词：碘营养碘摄入量调查分析

Molecular Structure Tailoring of Organic Spacers for High‑Performance Ruddlesden–Popper Perovskite Solar Cells

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Nano-Micro Letters 2025年第2期17卷 314-357页

作者： Pengyun Liu Xuejin Li Tonghui Cai wei Xing Naitao Yang Hamidreza Arandiyan Zongping shao shaobin Wang shaomin Liu School of Materials Science and Engineering State Key Laboratory of Heavy Oil ProcessingChina University of Petroleum(East China)Qingdao 266580People’s Republic of China School of Chemistry and Chemical Engineering Shandong University of TechnologyZibo 255049People’s Republic of China Centre for Applied Materials and Industrial Chemistry(CAMIC) School of ScienceRMIT UniversityMelbourneVic 3000Australia WA School of Mines:Minerals Energy and Chemical Engineering(WASM‑MECE)Curtin UniversityPerthWA 6102Australia School of Chemical Engineering The University of AdelaideAdelaideSA 5005Australia School of Engineering Great Bay UniversityDongguan 523000People’s Republic of China

Layer-structured Ruddlesden–Popper(RP)perovskites(RPPs)with decent stability have captured the imagination of the photovoltaic research community and bring hope for boosting the development of perovskite solar cell(PSC)***,two-dimensional(2D)or quasi-2D RP PSCs are encountered with some challenges of the large exciton binding energy,blocked charge transport and poor film quality,which restrict their photovoltaic ***,these issues can be readily resolved by rationally designing spacer cations of *** review mainly focuses on how to design the molecular structures of organic spacers and aims to endow RPPs with outstanding photovoltaic *** firstly elucidated the important roles of organic spacers in impacting crystallization kinetics,charge transporting ability and stability of *** we brought three aspects to attention for designing organic ***,we presented the specific molecular structure design strategies for organic spacers of RPPs aiming to improve photovoltaic performance of RP *** proposed strategies in this review will provide new avenues to develop novel organic spacers for RPPs and advance the development of RPP photovoltaic technology for future applications.

关键词： Ruddlesden-Popper perovskites Low-dimensional perovskite solar cells Organic spacers Molecular structure Design strategies

Decreased levels of phosphorylated synuclein in plasma are correlated with poststroke cognitive impairment

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Neural Regeneration Research 2025年第9期20卷 2598-2610页

作者： Yi Wang yuning Li Yakun Gu wei Ma Yuying Guan Mengyuan Guo Qianqian shao Xunming Ji Jia Liu Department of Clinical Laboratory Beijing Bo’ai HospitalChina Rehabilitation Research CenterCapital Medical UniversityBeijingChina Beijing Institute of Brain Disorders Laboratory of Brain DisordersMinistry of Science and TechnologyCollaborative Innovation Center for Brain DisordersBeijing Advanced Innovation Center for Big Data-based Precision MedicineCapital Medical UniversityBeijingChina Department of Neurosurgery Xuanwu HospitalCapital Medical UniversityBeijingChina

Poststro ke cognitive impairment is a major secondary effect of ischemic stroke in many patients;however,few options are available for the early diagnosis and treatment of this *** aims of this study were to(1)determine the specific relationship between hypoxic andα-synuclein during the occur of poststroke cognitive impairment and(2)assess whether the serum phosphorylatedα-synuclein level can be used as a biomarker for poststro ke cognitive *** found that the phosphorylatedα-synuclein level was significantly increased and showed pathological aggregation around the cerebral infa rct area in a mouse model of ischemic *** addition,neuronalα-synuclein phosphorylation and aggregation were observed in the brain tissue of mice subjected to chronic hypoxia,suggesting that hypoxia is the underlying cause ofα-synuclein-mediated pathology in the brains of mice with ischemic *** phosphorylatedα-synuclein levels in patients with ischemic stroke were significantly lower than those in healt hy subjects,and were positively correlated with cognition levels in patients with ischemic ***,a decrease in serum high-density lipoprotein levels in stroke patie nts was significantly correlated with a decrease in phosphorylatedα-synuclein *** ischemic stroke mice did not show significant cognitive impairment or disrupted lipid metabolism 14 days after injury,some of them exhibited decreased cognitive function and reduced phosphorylatedα-synuclein *** together,our results suggest that serum phosphorylatedα-synuclein is a potential biomarker for poststroke cognitive impairment.

关键词： biomarker high-density lipoprotein ischemic stroke phosphorylatedα-synuclein poststroke cognitive impairment

Constraints on holographic QCD phase transitions from PTA observations

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 71-78页

作者： Song He Li Li Sai Wang shao-Jiang Wang Center for Theoretical Physics and College of Physics Jilin University School of Physical Science and Technology Ningbo University Max Planck Institute for Gravitational Physics (Albert Einstein Institute) CAS Key Laboratory of Theoretical Physics Institute of Theoretical Physics Chinese Academy of Sciences School of Fundamental Physics and Mathematical Sciences Hangzhou Institute for Advanced StudyUniversity of Chinese Academy of Sciences (UCAS) School of Physical Sciences University of Chinese Academy of Sciences (UCAS) Theoretical Physics Division Institute of High Energy Physics Chinese Academy of Sciences

The underlying physics of QCD phase transition in the early Universe remains largely unknown due to its strong-coupling nature during the quark-gluon plasma/hadron gas transition, yet a holographic model has been proposed to quantitatively fit the lattice QCD data while with its duration of the first-order phase transition(FoPT) left undetermined. At specific baryon chemical potential, the first-order QCD phase transition agrees with the observational constraint of baryon asymmetry. It, therefore, provides a scenario for phase transition gravitational waves(GWs) within the standard model of particle physics. If these background GWs could contribute dominantly to the recently claimed common-spectrum red noise from pulsar timing array(PTA) observations, the duration of this FoPT can be well constrained, and the associated primordial black holes are still allowed by current observations.

关键词： pulsar timing array QCD phase transition gravitational waves primordial black holes

The effects of exercise interventions on brain-derived neurotrophic factor levels in children and adolescents:a meta-analysis

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Neural Regeneration Research 2025年第5期20卷 1513-1520页

作者： Xueyun shao Longfei He Yangyang Liu Physical Education School Shenzhen UniversityShenzhenGuangdong ProvinceChina Shenzhen Institute of Neuroscience ShenzhenGuangdong ProvinceChina

Brain-derived neurotrophic factor is a crucial neurotrophic factor that plays a significant role in brain health. Although the vast majority of meta-analyses have confirmed that exercise interventions can increase brain-derived neurotrophic factor levels in children and adolescents, the effects of specific types of exercise on brain-derived neurotrophic factor levels are still controversial. To address this issue, we used meta-analytic methods to quantitatively evaluate, analyze, and integrate relevant studies. Our goals were to formulate general conclusions regarding the use of exercise interventions, explore the physiological mechanisms by which exercise improves brain health and cognitive ability in children and adolescents, and provide a reliable foundation for follow-up research. We used the Pub Med, Web of Science, Science Direct, Springer, Wiley Online Library, weipu, Wanfang, and China National Knowledge Infrastructure databases to search for randomized controlled trials examining the influences of exercise interventions on brain-derived neurotrophic factor levels in children and adolescents. The extracted data were analyzed using Review Manager 5.3. According to the inclusion criteria, we assessed randomized controlled trials in which the samples were mainly children and adolescents, and the outcome indicators were measured before and after the intervention. We excluded animal experiments, studies that lacked a control group, and those that did not report quantitative results. The mean difference(MD;before versus after intervention) was used to evaluate the effect of exercise on brain-derived neurotrophic factor levels in children and adolescents. Overall, 531 participants(60 children and 471 adolescents, 10.9–16.1 years) were included from 13 randomized controlled trials. Heterogeneity was evaluated using the Q statistic and I^(2) test provided by Review Manager software. The meta-analysis showed that there was no heterogeneity among the studies(P = 0.67,

关键词： adolescents brain-derived neurotrophic factor children exercise meta-analysis randomized controlled trials