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Initial estimate of the contribution of cryospheric change in China to sea level rise

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Chinese Science Bulletin 2011年第16期56卷 1661-1664页

作者： REN JiaWen ye BaiSheng DING yongjian LIU ShiYin State Key Laboratory of Cryospheric Sciences Cold and Arid Regions Environmental and Engineering Research Institute Chinese Academy of Sciences Lanzhou 730000 China

Recent studies have shown that cryospheric melting is becoming the dominant factor responsible for sea level rise,and that the melt-water from mountain glaciers and ice caps has comprised the majority of the cryospheric contribution since *** of the estimations of cryospheric melt-water and precipitation in glacier regions indicated that the potential contribution of the cryosphere in China is 0.14 to 0.16 mm a–1,of which approximately 0.12 mm a–1 is from *** contribution of glaciers in the outflow river basins is about 0.07 mm a–1,accounting for 6.4%of the total from global glaciers and ice caps.

关键词：海平面上升降水估计冰冻圈中国河流流域冰川冰雪圈融化

Improving the activity and stability of Ni-based electrodes for solid oxide cells through surface engineering:Recent progress and future perspectives

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Materials Reports(Energy) 2021年第2期1卷 35-47页

作者： Junxian Pan yongjian ye Mengzhen Zhou Xiang Sun Yihan Ling Keiji Yashiro Yan Chen School of Environment and Energy State Key Laboratory of Pulp and Paper EngineeringSouth China University of TechnologyGuangzhou510006PR China School of Materials Science and Physics China University of Mining and TechnologyXuzhou221116PR China Graduate School of Environmental Studies Tohoku UniversitySendai980-8577Japan

Solid oxide cells(SOCs)have attracted great attention in the past decades because of their high conversion efficiency,low environmental pollution and diversified fuel ***-based catalysts are the most widely used fuel electrode materials for SOCs due to the low price and high ***,when hydrocarbon fuels are employed,nickel-based electrodes face serious carbon deposition challenges,leading to a rapid decline of cell *** efforts have been devoted to understanding the occurrence of the coking reaction,and to improving the stability of the electrodes in hydrocarbon *** this review,we summarize recent research progress of utilizing surface modification to improve the stability and activity of Ni-based electrodes for SOCs by preventing carbon *** review starts with a briefly introduction about the reaction mechanism of carbon deposition,followed by listing several surface modification technologies and their working *** we introduce representative works using surface modification strategies to prevent carbon coking on Ni-based ***,we highlight future direction of improving electrode catalytic activity and anti-coking performance through surface engineering.

关键词： Solid oxide cells Ni-based electrodes Carbon coking Surface engineering

Self-assembled synthesis of metal oxide composite with highly stable lithium storage properties

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Self-assembled synthesis of metal oxide composite with highl...

Protective effects of liraglutide on glomerular podocytes in obese mice by inhibiting the inflammatory factor TNF-α-mediated NF-κB and MAPK pathway

中国化学会第三届中国能源材料化学研讨会

作者： yongjian ye Zhuoxi Li Ronghua Zeng School of Chemistry and Environment South China Normal University

CuO is an inexpensive and non-toxic lithium ion battery anode material with high theoretical capacity(670 mAh g).However CuO electrode is prone to structural instability and volume expansion during charging and discha...

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Protective effects of liraglutide on glomerular podocytes in...

Effects of liraglutide and dapagliflozin on bone mineral density and bone turnover markers in post menopausal overweight/obese type 2 diabetes mellitus

第十二次全国中西医结合内分泌代谢病学术大会暨糖尿病、甲状腺疾病高峰论坛

作者： yongjian ye Xing Zhong Na Li TianrongPan Department of Endocrinology The Second Affiliated Hospital of Anhui Medical University Department of Endocrinology Chaohu Hospital of Anhui Medical University

Objective:To evaluate the protective effects of Glucagon-like pe ptide-1(GLP-1) receptor agonist(liraglutide) on glomerular podocytes of obese mice,and explore the possible underlying ***:Twelve of the t hrity-four healthy and clean male mice were randomly selected as the normal c ontrol *** remaining twenty-two mice were included in the high-fat die t(HFD) feeding *** twelve weeks of high-fat diet and normal diet,tw o mice each from the HFD feeding group and the normal control group were randomly selected and sacrificed to suggeste that the modeling was successful i n the HFD feeding ***,twenty mice were randomly divided intoHFD+liraglutide group(liraglutide group,n=10) andHFD group(n=10).The morphol ogy and the structure of glomerular podocytes were observed using electron mi *** foot process diameter,glomerular basement membrane thick ness were *** was performed to determine the serum tumor necr osis factorα(TNF-α) *** expression levels of TNF-α protein and nuclear factor-kappa B(NF-κB) in kidney tissues,extracellularsignal regulating kinase(E RK),c-Jun N-terminal kinase(JNK) and p38 MAPK in the mitogenactivated prot ein kinases(MAPK) pathwaywere detected by western ***:HFD-feed ing caused significant renal injury,podocytepathological changes,podocyte foot process diameter and glomerular basement membrane thicknesswere significantl y increased compared with the control *** injection significantly alleviated HFD-induced effects on renalfunctions and podocytemorphology,as 24 h urine protein,urinary albumin andpodocyte2 ***,H FD-induced Inflammatory reactionwere obviously attenuated by Liraglutide admi nistration,so did the HFD-induced activation of TNF-α-mediated NF--κB and MAPK ***:Liraglutide reduced urinary albumin excretion in obesity-related glomerulopathy model mice,and improved podocyte morphology and structural *** mechani

关键词： Protective effects of liraglutide on glomerular podocytes in obese mice by inhibiting the inflammatory factor TNF B and MAPK pathway mediated NF

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Effects of liraglutide and dapagliflozin on bone mineral den...

The role of potassium channels in the nitric oxide-induced relaxation of human airway smooth muscle of passively sensitization by serum from allergic asthmatic patients

第十二次全国中西医结合内分泌代谢病学术大会暨糖尿病、甲状腺疾病高峰论坛

作者： Zhong Xing Yang Lina ye yongjian Pan Tianrong Department of Endocrinology The Second Affiliated Hospital of Anhui Medical University

Objective To observe the effects of liraglutide and dapagliflozin on bone mineral density and bone turnover markers in postmenopausal overwei ght/obese type 2 diabetes mellitus(T2DM).Methods Sixty-three cases of post menopausal overweight/obese T2DM were randomly divided into liraglutide group(n=32) and dapagliflozin group(n=31).The levels of blood sugar,total cho lesterol(TC),low density lipoprotein(LDL-C),bone mineral density(BMD),type I collagen C-terminal peptide cross-linking(β-CTX),type 1 collagen N-ter minal pro-peptide(P1NP) and alkaline phosphatase(AKP) were compared befor e treatment and 26 weeks after *** *** with baseline,BMI,FPG,HbA1c,TG,TCH and LDL in liraglutide group and dapagliflozin group decreased significantly after 26 weeks of treatment(P0.05).*** with baseli ne,P1 NP in liraglutide group increased significantly after treatment(P<0.05),beta-CTX decreased significantly(P<0.05),and beta-CTX in dapagliflozin gr oup increased significantly after treatment(P<0.05).After treatment,L2-4 B MD was significantly lower in the dapagliflozin group than that in the liragluti de group(P<0.05);β-CTX was significantly higher in the dapagliflozin grou p than that in the liraglutide group(P<0.05);and P1NP was significantly lo wer than that in the liraglutide group(P<0.05).Conclusion Liraglutide and d apagliflozin,two drugs with both hypoglycemic and weight-reducing effects,ha ve no significant improvement on BMD in bone metabolism,However,liragluti de can inhibit bone resorption and promote bone formation,while dapagliflozin can promote bone resorption.

关键词： CTX Effects of liraglutide and dapagliflozin on bone mineral density and bone turnover markers in post menopausal overweight/obese type 2 diabetes mellitus BMD FPG

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Journal of Nanjing Medical University 2006年第3期20卷 184-187页

作者： Tao ye yongjian Xu Zhenxiang Zhang Xiansheng Liu Zhao Yang Baoan Gao Department of Respiratory Medicine Tongji Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan 430030 China

Objective： To investigate the role of large Ca^2＋-activated, delayed-rectifier and ATP-sensitive potassium channel in regulating the relaxation induced by nitric oxide （NO） in normal and passively sensitized human airway smooth muscle （HASM） with serum from asthmatic patients. Methods： The effects of NO or/and potassium channel blockers on the tensions of normal and passively sensitized HASM were measured by using nitric oxide donor and potassium blockers, with the isometric tension recording technique. Results： Showed that（1）In the control group and passively sensitized group, Kv blocker（4-AP） cause concentration-dependent augmentation in the contraction induced by histamine （ 1 ×10^-4 mol/L ）, （P 〈 0.05）, but Glib （ 1 × 10^-2 mol/L ） and TEA （1×10^-4 mol/L） have no significant effects on the contraction induced by histamine （1×10^-4 mol/L）. The maximum tension induced by histamine in passively sensitized group is higher than that in the control group （P 〈 0.05）. （2） NO-donor Sodium Nitroprusside （SNP） bring about significant relaxation in normal and passively sensitized HASM rings （P 〈 0.05）. Relaxations of passively sensitized airway rings [ （29.4 ± 3.3）% ] were significant less than those of normal HASM rings [ （44.1 ± 10.2）% ], （P 〈 0.05）.（3） Glib（1×10^-2 mol/L）have no significant effect on the relaxations induced by SNP（1×10^-4 mol/L）. 4-AP（1×10^-2 mol/L） inhibited relaxation induced by SNP （1×10^-4 mol/L）, （P 〈 0.01）. TEA （1×10^-3 tool/L） inhibited relaxation induced by SNP （1×10^-4 mol/L）（P 〈 0.05）, and the inhibiting effect in passively sensitized HASM rings were significant less than in normal HASM, （P 〈 0.05）. Conclusion： It was concluded that SNP（NO-donor） relaxed the contraction of HASM partly via BKca channel opening. In passively sensitized HASM in vitro, the relaxation of SNP decreased compared with control group, which might be associated with the down-regulating activity of BKca in passively sensitized HASM.

关键词： nitric oxide passively sensitization human airway smooth muscle potassium channel

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700℃先进超超临界机组概念设计方案研究

热力发电 2022年第8期51卷 99-107页

作者：罗建松叶勇健中国电力工程顾问集团华东电力设计院有限公司上海200063

为大幅提高当前燃煤发电机组的发电效率,使700℃先进超超临界机组的净效率达到50%以上,对700℃超超临界机组概念设计方案进行了研究,分析了概念设计方案涉及的蒸汽初参数、机组容量、再热次数、主机选型方案、热力系统拟定、主要辅机选... 详细信息

为大幅提高当前燃煤发电机组的发电效率,使700℃先进超超临界机组的净效率达到50%以上,对700℃超超临界机组概念设计方案进行了研究,分析了概念设计方案涉及的蒸汽初参数、机组容量、再热次数、主机选型方案、热力系统拟定、主要辅机选型和主厂房布置方案。结果表明:700℃超超临界机组概念设计方案推荐机组容量为660 MW,初参数为35 MPa/700℃/720℃的一次再热机组;锅炉拟采用超超临界参数变压运行螺旋管圈直流炉,单炉膛、一次中间再热、采用切圆燃烧方式、平衡通风、固态排渣、全钢悬吊结构塔式锅炉、露天布置;汽轮机拟采用单轴、一次中间再热、四缸四排汽;热力系统推荐采用带变频发电机的BEST小机回热系统,机组采用十二级非调整抽汽;主厂房推荐采用二列式、侧煤仓、汽轮机高位布置方案。700℃超超临界机组概念设计方案对我国建设更加高效和清洁的火力发电厂具有重要的参考意义。

关键词：超超临界发电 700℃超超临界机组概念设计

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Investigations of Water Flow Behaviors Induced by Local Temperature Variations through a Single Rough Fracture for the Enhanced Geothermal Systems

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Journal of Thermal Science 2024年第3期33卷 1055-1064页

作者： LI Jiawei ye Lin Department of Energy and Power Engineering Tsinghua UniversityBeijing100084China School of Power and Energy Northwestern Polytechnical UniversityXi’an710072China

In recent years,Enhanced Geothermal System(EGS)technologies have been applied to the geothermal resources production in the Hot Dry Rock(HDR).The core of EGS technologies is to adopt hydraulic fracturing in the reservoir to create a connected network of discrete fractures with the consideration of water as a working fluid for hydraulic fracturing and heat *** paper investigates the characteristics of water flow behaviors through a single rough fracture under different temperature and pressure conditions.A single fracture model with rough fracture surfaces is constructed and then characterized,and influences of the anisotropic factor on the average tortuosity and frictional resistance coefficient of water flow through a single fracture with rough surfaces have been compared and *** consideration of other impacting factors(temperature,pressure,fracture roughness),the impact of mass flow rate has also been *** simulation results present that changes of average tortuosity for water flow through a single rough facture are mainly affected by *** can be observed that higher temperature leads to larger average tortuosity but the frictional resistance coefficient shows an opposite *** for pressure conditions,it is found that effects of pressure on average tortuosity and frictional resistance coefficient is very small,which can be neglected under high pressure ***,the average tortuosity shows a progressively linear relationship with the mass flow *** the contrary,the frictional resistance coefficient has a negative relationship with the mass flow *** is revealed that when the mass flow rate reaches a critical point,the influences of temperature on the frictional resistance coefficient will be *** of single rough fractures with different anisotropic factors show that values of average tortuosity and frictional resistance coefficient have positive relationships with the increase

关键词： single rough fracture tortuosity frictional resistance enhanced geothermal system

考虑VSC-HVDC接入的受端系统机组恢复多阶段决策方法

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电网技术 2022年第6期46卷 2375-2385页

作者：叶永健李长城罗伟琚上纯黄书健广西大学电气工程学院广西壮族自治区南宁市530004 广东电网公司惠州供电局广东省惠州市516000

针对柔性直流(voltage source converter based high voltage direct current,VSC-HVDC)馈入的受端系统,以往研究仅分析了VSC-HVDC自身输出特性对加快受端系统恢复的作用。然而,鲜有从制定受端系统恢复策略的角度考虑,难以充分发挥VSC-H... 详细信息

针对柔性直流(voltage source converter based high voltage direct current,VSC-HVDC)馈入的受端系统,以往研究仅分析了VSC-HVDC自身输出特性对加快受端系统恢复的作用。然而,鲜有从制定受端系统恢复策略的角度考虑,难以充分发挥VSC-HVDC对受端系统功率支援的作用。鉴于此,该文对VSC-HVDC馈入的受端系统恢复策略进行研究,构建受端系统多阶段机组恢复模型。首先,引入短路比指标表征交流系统的恢复程度,利用支路追加法量化机组恢复进程,定量分析直流落点处的输出功率。其次,依据交流系统短路比变化将机组恢复过程划分为无源系统、弱交流系统和强交流系统阶段。以线路充电无功、线路恢复时间以及线路短路容量贡献度为权值,针对不同阶段提出单路径恢复、扩展路径恢复以及多路径恢复的恢复模式。然后,提出综合反映恢复机组以及恢复路径优劣的评价指标,利用组合赋权法对机组恢复次序进行快速决策,将机组恢复的连续时间过程转化为分阶段进行的离散过程。最后,以改进的IEEE39节点系统为例,验证所提方法的可行性和有效性。

关键词：柔性直流多阶段机组恢复模型短路比机组恢复次序组合赋权法