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Generic load regulation strategy for enhancing energy efficiency of chiller plants

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Building Simulation 2024年第8期17卷 1273-1287页

作者： hang wan Yuyang Gong Shengwei wang Yongjun Sun Tao Xu Gongsheng Huang Department of Architecture and Civil Engineering City University of Hong KongHong KongChina Department of Building Environment and Energy Engineering Hong Kong Polytechnic UniversityHong KongChina School of Civil Engineering Guangzhou UniversityGuangzhouChina Shenzhen Research Institute of City University of Hong Kong ShenzhenChina

In many chiller plants,high coefficient of performance(COP)is only achieved at a few favorable part load ratios(PLRs),while the COP is low at many other non-favorable *** address this issue,this study proposes a generic load regulation strategy that aims to maintain chiller plants operating at high COP,particularly under non-favorable *** is achieved by incorporating thermal energy storage(TES)units and timely optimizing the charging and discharging power of the integrated TES *** optimal charging and discharging power is determined by solving a dynamic optimization problem,taking into account the performance constraints of the TES units and the chiller *** provide an overview of the energy-saving potential of the proposed strategy,a comprehensive analysis was conducted,considering factors such as building load profiles,COP/PLR curves of chillers,and attributes of the TES *** analysis revealed that the proposed load regulation strategy has the potential to achieve energy savings ranging from 5.7%to 10.8%for chiller plants with poor COPs under unfavorable PLRs,particularly in buildings with significant load variations.

关键词： load regulation thermal energy storage chiller plants building energy efficiency

Dynamics of Land Use/Land Cover Considering Ecosystem Services for a Dense-Population Watershed Based on a Hybrid Dual-Subject Agent and Cellular Automaton Modeling Approach

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Engineering 2024年第6期37卷 182-195页

作者： Yutong Li Yanpeng Cai Qiang Fu Xiaodong Zhang hang wan Zhifeng Yang Guangdong Provincial Key Laboratory of Water Quality Improvement and Ecological Restoration for Watersheds Institute of Environmental and Ecological EngineeringGuangdong University of TechnologyGuangzhou 510006China School of Water Conservancy and Civil Engineering Northeast Agricultural UniversityHarbin 150030China School of Environmental Science and Engineering Shandong UniversityQingdao 266000China

Land use/land cover represents the interactive and comprehensive influences between human activities and natural conditions,leading to potential conflicts among natural and human-related issues as well as among *** study introduced economic standards for farmers.A hybrid approach(CA-ABM)of cellular automaton(CA)and an agent-based model(ABM)was developed to effectively deal with social and land-use synergic issues to examine human–environment interactions and projections of land-use conversions for a humid basin in south *** attributes and socioeconomic data were used to analyze land use/land cover and its drivers of *** major modules of the CA-ABM are initialization,migration,assets,land suitability,and land-use change *** estimates of the factors influencing the urban land-use conversion probability were captured using parameters based on a spatial logistic regression(SLR)***,multicriteria evaluation(MCE)and Markov models were introduced to obtain empirical estimates of the factors affecting the probability of ecological land *** agent-based CA-SLR-MCE-Markov(ABCSMM)land-use conversion model was proposed to explore the impacts of policies on land-use *** model can reproduce observed land-use patterns and provide links for forest transition and urban expansion to land-use decisions and ecosystem *** results demonstrated land-use simulations under multi-policy scenarios,revealing the usefulness of the model for normative research on land-use management.

关键词： Land use/land cover Human-environment interactions Agent-based model Cellular automaton

Imperatorin alleviates Aβ-induced spatial learning memory impairment and neuroinflam⁃mation in model mice of Alzheimer disease

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中国药理学与毒理学杂志 2021年第9期35卷 642-643页

作者： wan hang-juan LUO Li LIU Xin HE Wei Department of Pharmacology Gannan Medical UniversityKey Laboratory of Cerebrovascular Pharmacology of Jiangxi ProvinceKey Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases of Ministry of Edu-cationGanzhou 341000China

OBJECTIVE To investigate the effects of imperatorin on the spatial learning memory impairment and neuroinflammation in model mice of Alzheimer disease(AD)induced by intracerebroventricular injection of Aβ*** Mouse model of AD was established by injection of Aβ1-42 into the lateral ***⁃peratorin(2.5 and 5.0 mg·kg-1,daily)was inject⁃ed by intraperitoneally 1 h after intracerebroven⁃tricular injection for 13 *** effect of imperato⁃rin on the spatial learning and memory impair⁃ment was assessed by eight arm maze *** levels of cytokines TNF-α,IL-1β,IL-6,IL-18 and chemokines MCP-1 in mouse cortex and hip⁃pocampus were detected by *** protein expression of NF-κB P65,TLR4,MyD88,p-P38,p-ERK,and p-JNK were detected by Western *** As compared with the AD model group,imperatorin treatment significantly attenuated Aβ1-42-induced spatial learning and memory impairment assessed by eight arm maze *** addition,imperatorin significantly reduced the levels of cytokines TNF-α,IL-1β,IL-6,IL-18 and chemokines MCP-1 in the cerebral cortex and ***,Western blotting results showed that imperatorin treat⁃ment significantly down-regulated the protein expression of NF-κB P65,TLR4,MyD88,p-P38,p-ERK,and *** Imperatorin has neuroprotective effects in the Aβ1-42 induced AD model mice and its mechanism may be partially associated with the inhibition of inflam⁃matory response in the cortex and hippocampus.

关键词： imperatorin Alzheimer disease Aβ1-42 learning and memory impairment inflam⁃matory response

Rituximab induction therapy in highly sensitized kidney transplant recipients

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Chinese Medical Journal 2011年第13期124卷 1928-1932页

作者： YIN hang wan Hao HU Xiao-peng LI Xiao-bei wanG Wei LIU hang REN Liang Zhang Xiao-dong Kidney Transplantation Program Department of Urology BeijingChao-Yang Hospital Capital Medical University Beijing 100020China

Background The number of highly sensitized patients is rising, The present study aimed to investigate the safety and efficacy of rituximab in highly sensitized kidney transplant recipients. and sensitization can lead to renal transplant failure. renal transplantation following induction therapy with Methods Seven highly sensitized kidney transplant recipients who underwent rituximab therapy from December 2008 to December 2009 were retrospectively analyzed. There were 3 men and 4 women, with a mean age of 38.5 years （range, 21-47 years）. The duration of hemodialysis was 3-12 months, with a mean duration of 11 months. For 4 patients, this was the second transplant; the previous graft survival time was 2-11 years, with a mean survival time of 5.8 years. All the female recipients had history of multiple pregnancies, and all patients had previously received blood transfusions. All donors were men, with a mean age of 32.5 years （range, 25-37 years）. In 2 of the 7 patients, both class I and class II of panel reactive antibody were high; the remaining 5 patients showed either high in class I or in class II of panel reactive antibody. The mean panel reactive antibody value was 31% for class I and 51% for class II respectively. The donors and the recipients had the same blood type, with low lymphocyte cytotoxicity ranging from 2% to 5%. The human leukocyte antigen （HLA） mismatch numbers were from 2 to 4. All patients received tacrolimus （0.1 ***^-1 .d^-1） and mycophenolate mofetil （750 mg twice per day） orally 3 days prior to surgery. All patients received a single dose of 600 mg rituximab （375 mg/m^2） infusion on the day before surgery and polyclonal antibody （antithymocyte globulin） on the day of surgery. Postoperative creatinine, creatinine clearance rate, and occurrence of rejection by pathological biopsy confirmation were monitored. Results No patient had delayed graft function after surgery. Two patients had acute rejection, one on day 7 and the other on day 13 post-s

关键词： kidney transplant highly sensitized rituximab

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构建煤矿底板突水预测系统

煤炭技术 2011年第7期30卷 95-97页

作者：万武亮煤炭工业郑州设计研究院有限公司郑州450007

煤矿在开采过程中经常受到突水的威胁,造成的人员伤亡和经济损失很大,危害相当严重。本文利用尖点突水预测模型,结合信息技术,构建煤矿底板突水预测系统,并以平顶山十矿为例验证了系统的可靠性。

关键词：信息技术突水可靠性

CuO-ZnO INTERACTION IN AHTD Cu-BASED CATALYST FOR METHANOL SYNTHESIS FROM CO/H2

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Journal of Energy Chemistry 1994年第3期 280-285页

作者： HU Yun-hang wan Hui-Lin TSAI Khi-RuiDepartment of Cheimsbry and State Key Laboratory for Physical Cheimsbry of the Solid Sur face Xiamen University Xiamen, Fujian 361005

A CU/ZnO catalyst for methanol synthesis from CO/H, was pre-pared directly using metal nitrates by Aerosol High Temperature Decomposition（AHTD） *** the TPR of the AHTD Cu/ZnO catalyst,there were tworeduction *** results showed CuO reduction took place at least partiallyinvolving two stepe:Ch→Cuand Cu→*** the basis of the resultsof TPR,XRD,XPS and activity test,we supposed that there be an interactionbetween CuO and ZnO in AHTD Cu/ZnO catalyst.

关键词： CuO-ZnO INTERACTION IN AHTD Cu-BASED CATALYST FOR METHANOL SYNTHESIS FROM CO/H2 ZnO XRD CO

九孔鲍养殖中的脓疱病病因分析和药物敏感性研究

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台湾海峡 2005年第4期24卷 526-532页

作者：黄万红漳浦鲍鱼研究所福建漳浦363205

在福建沿海养殖的九孔鲍不论是成鲍还是幼鲍均经常发生脓疱病,死亡率可达 50％-60％,其症状与皱纹盘鲍脓疱病相似,但对药物的敏感性却不同．研究发现: 导致福建省的九孔鲍发生脓疱病的主要致病菌为溶藻弧菌(Vibrio alginolyticus)而非 ... 详细信息

在福建沿海养殖的九孔鲍不论是成鲍还是幼鲍均经常发生脓疱病,死亡率可达 50％-60％,其症状与皱纹盘鲍脓疱病相似,但对药物的敏感性却不同．研究发现: 导致福建省的九孔鲍发生脓疱病的主要致病菌为溶藻弧菌(Vibrio alginolyticus)而非河流弧菌(***)．其对多数药物不敏感,在43种抗菌药物中只对呋喃妥因、氯霉素、痢特灵等中度敏感,而对青霉素、复方新诺明和头孢类药物则完全不敏感．由于上述药物已被列为禁用渔药而不宜使用,故生产中应以新研制的无公害防治药物替代．

关键词：海水养殖脓疱病试验研究病因分析药物敏感性九孔鲍溶藻弧菌

中国数字乡村发展的空间特征及其农户增收效应--基于县域数字乡村指数与CHFS的实证分析

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自然资源学报 2023年第8期38卷 2041-2058页

作者：丁建军万航吉首大学商学院吉首416000 武陵山民族地区绿色减贫与发展研究中心吉首416000

数字乡村是农业农村现代化发展的重要推力,既是乡村振兴的战略方向,也是数字中国建设的重要内容。在分析中国数字乡村发展空间特征的基础上,将县域数字乡村指数与CHFS数据库匹配,应用门限回归等方法识别数字乡村的农户增收效应。研究发... 详细信息

数字乡村是农业农村现代化发展的重要推力,既是乡村振兴的战略方向,也是数字中国建设的重要内容。在分析中国数字乡村发展空间特征的基础上,将县域数字乡村指数与CHFS数据库匹配,应用门限回归等方法识别数字乡村的农户增收效应。研究发现:(1)中国县域数字乡村发展不平衡,呈“东—中—西”降低态势,但南北差异不大。(2)数字乡村四个子维度发展水平为乡村数字基础设施>乡村治理数字化>乡村经济数字化>乡村生活数字化,并且乡村经济数字化、乡村生活数字化存在显著东西差异;同时,数字乡村发展总水平及各子维度在空间上均显著相关,且HH型和LL型集聚特征突出。(3)数字乡村通过数字基础设施以及经济、治理和生活数字化促进农户增收,其中经济数字化的农户增收效应最大。(4)数字乡村的农户增收效应与农户教育和收入水平相关,即数字乡村对受教育程度高的农户增收效应更显著,而对低收入农户的增收作用不明显,甚至有抑制效应。此外,在考虑数字乡村自身发展阶段与地区经济发展水平的情形下,数字乡村对农户增收存在非线性影响。

关键词：数字乡村空间特征区域差异农户增收

基于输入阻抗谱的电力电缆本体局部缺陷类型识别及定位

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电工技术学报 2021年第8期36卷 1743-1751页

作者：李蓉周凯万航谢敏饶显杰四川大学电气工程学院成都610065 国家电网无锡供电公司无锡214000

为解决局部放电(PD)法和反射系数谱(RCS)法在电力电缆本体局部缺陷类型识别及定位方面存在的不足,提出一种基于输入阻抗谱的电力电缆本体局部缺陷类型识别及定位方法。首先,依据电力电缆分布参数模型,通过仿真分析,得到含有容性/感性缺... 详细信息

为解决局部放电(PD)法和反射系数谱(RCS)法在电力电缆本体局部缺陷类型识别及定位方面存在的不足,提出一种基于输入阻抗谱的电力电缆本体局部缺陷类型识别及定位方法。首先,依据电力电缆分布参数模型,通过仿真分析,得到含有容性/感性缺陷的电力电缆输入阻抗谱特征。然后,运用电力电缆输入阻抗谱、Kaiser窗实现对电力电缆局部缺陷的高灵敏度定位,得到具有直观性的定位谱图。最后,在实验室13m长的电力电缆上制作两种局部缺陷样本(铜屏蔽层缺损缺陷与热老化缺陷),用于验证所提方法的有效性。仿真和实验结果表明,该方法对长度大于5cm或电容变化大于±5%的局部缺陷具有较高的识别灵敏度,不仅能对电力电缆本体局部缺陷类型进行识别,还能实现对微弱缺陷的有效定位。

关键词：输入阻抗谱电缆本体缺陷类型识别局部缺陷定位 Kaiser窗