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18篇 您的检索式:作者名="MENG Qinghai"
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1Investigation of heavy metal partitioning influenced by flue gas moisture and chlorine content during waste incineration显示文摘The impact of moisture on the partitioning of the heavy metals including Pb,Zn,Cu and Cd in municipal solid waste (MSW) was studied in a laboratory tubular furnace.A thermodynamic investigation using CHEMKIN software was performed to compare the experimental results.Simulated waste,representative of typical MSW with and without chlorine compounds,was burned at the background temperature of 700 and 950°C,respectively.In the absence of chlorine,the moisture content has no evident effect on the volatility of Pb,Zn and Cu at either 700 or 950°C,however,as flue gas moisture increasing the Cd distribution in the bottom ash increased at 700°C and reduced at 950°C,respectively.In the presence of chlorine,the flue gas moisture reduced the volatility of Pb,Zn and Cu due to the transformation of the more volatile metal chlorides into less volatile metal oxides,and the reduction became significant as chlorine content increase.For Cd,the chlorine promotes its volatility through the formation of more volatile CdCl 2.As a result,the increased moisture content increases the Pb,Zn,Cu and Cd concentrations in the bottom ash,which limits the utilization of the bottom ash as a construction material.Therefore,in order to accumulate heavy metals into the fly ash,MSW should be dried before incineration.Qinghai Li,Aihong Meng,Jinyan Jia,Yanguo Zhang Department of Thermal Engineering,Key Laboratory for Thermal Science and Power Engineering of the Ministry of Education of China,Tsinghua University,Beijing 100084,China. 2010Journal of Environmental Sciences2010,22,5:24
2Progress in the sustainable recycling of spent lithium-ion batteries显示文摘Lithium-ion batteries(LIBs)are booming in multiple fields due to a rapid devel-opment in the last decade.However,limited by operational lifespans,a grow-ing number of spent LIBs reaching the end of their lives are consequently faced with serious accumulation and descended to hazardous waste.Without proper disposal,the spent LIBs will inevitably cause negative influence on the ecol-ogy and undermine the sustainable manufacture of LIBs.The initial research of recycling strategies mainly focused on the optimization of metallurgical pro-cesses.Recently,the sustainability of the recycling process has attracted much more attention and become an important factor.Here,we summarize the recent progress of the spent LIBs recycling from a sustainable perspective,especially discussing the green innovations in recycling strategies for spent LIBs.Through this article,we expect to reveal the challenges and developing tendency of the recycling strategies and provide a guideline for future researches on process-ing spent LIBs and beyond,like the recycling of the solid-state lithium metal batteries.Min Fan Xin Chang Qinghai Meng Li-Jun Wan Yu-Guo Guo 2021SusMat2021,1,2:7
3Geochemical Characteristics and Origin of Natural Gases in the Qaidam Basin,China显示文摘Sixty-five natural gas samples were collected from 19 oil-gasfields in the Qaidam basin, China. The chemical composition and carbon isotope values of the samples were measured, and the geochemical characteristics and origin of the natural gases were studied. The gases can be divided into biogenic gases, sapropelic oil-type gases, mixed type oil-type gases, coal-type gases and mixed gas. The δ13C1 values of the biogenic gases are very small and the C2+ contents of them are very low, ranging from -68.2‰ to -61.8‰ and 0.06% to 0.20% respectively. They have heavy δD and δ13CCO2, showing a CO2 reduction pathway. They are distributed in the East depression region and derived from the Quaternary source rocks. The sapropelic oil-type gases have small δ13C2 values and high C2+ ranging from -36.6‰ to -28.6‰ and from 33.01% to 47.15% respectively. The mixed type oil-type gases have δ13C2 values and C2+ contents varying from -28.6‰ to -24.8‰ and from 4.81% to 26.06% respectively. Both sapropelic oil-type gases and mixed type oil-type gases are associated with oil-type oils, distributed in the West depression region and derived from the Tertiary saltwater lacustrine sapropelic source rocks and humic source rocks respectively. The δ13C2 values of the coal-type gases are extremely high and the C2+ contents are very low, changing from -23.3‰ to -12.5‰ and from 0.06% to 18.07% respectively. The coal-type gases in the Nanbaxian gasfield and the Lenghu oil-gasfields in the North fault block belt are derived from the Middle Jurassic coal-measures source rocks, whereas those in the West depression region are derived from the Tertiary saltwater lacustrine humic source rocks. Compared with some other basins in China, the natural gases there have obviously heavier δ13C due to the heavier δ13C of different types of kerogens of the Tertiary saltwater lacustrine source rocks in the West depression region of the basin. The mixing of natural gases is common in the West depression region, but the mixed gases are formed by sapropelic oil-type gases, mixed type oil-type gases or coal-type gases, respectively, of different levels of maturity. Most of the sapropelic oil-type gases and mixed type oil-type gases in the west part are thermally immature and low-mature, but the coal-type gases in the West depression region and the North fault block belt are mature and high- to over-mature.ZHANG Xiaobao, HU Yong, DUAN Yi, MA Liyuan, MENG Zifang, HE Peng,ZHOU Shixin and PENG DehuaState Key Laboratory of Gas Geochemistry, Lanzhou Institute of Geology, Chinese Academy ofSciences, Lanzhou, Gansu 730000 Research Institute of Petroleum Exploration and Development, Qinghai Petroleum Company,CNPC, Dunhuang, Gansu 736200 2003Acta Geologica Sinica(English Edition)2003,77,1:6
4Practice and understanding of developing new technologies and equipment for green and low-carbon production of oilfields显示文摘The core of China’s low-carbon development includes optimization of industrial structure,clean energy technologies,emission reduction technologies,and innovation of relevant systems and institutions.China National Petroleum Corporation(CNPC)has always been a proactive participant in developing low-carbon economy,shouldering the responsibilities of safeguarding oil and gas supply,conserving energy,and reducing emission.Therefore,CNPC fulfills those responsibilities as a substantial part of its overall strategy.Guided by low carbon and driven by innovation,petroleum corporations have taken constant innovation of low-carbon technologies,especially the development of green and low-carbon petroleum engineering technologies and equipment,as major measures for energy conservation and emission reduction.Large-scale development mode o f unconventional resource anhydrous fracturing should be innovated.And supercritical C 02 should be used to replace water for fracturing operation,in order to achieve multiple objectives of C 02 burying,conserve water resource,improve single well production and ultimate recovery,realizing reduced emission and efficient utilization o f C 02 resources.Artificial lifting energy-saving and efficiencyincreasing technologies and injection-production technology in the same well should also be innovated.Energy consumption of high water-cut wells is reduced to support the new low-carbon operation mode of high water-cut oilfields and realize energy saving and efficiency improvement during oil production by developing the operation efficiency of the lifting system and reducing the ineffective lifting of formation water.These technologies have been widely recognized by local and international experts and have greatly enhanced CNPC's international influence.This study expounds the key technologies and equipment with regard to the development of green and low-carbon petroleum engineering and provide relevant suggestions.He LIU Jianwen YAN Siwei MENG Qinghai YANG Zixiu YAO Shijia ZHU 2019Frontiers of Engineering Management2019,6,4:3
5Liuwei Dihuang formula(六味地黄方)protect endothelial cells from apoptosis by up-regulating expression of estrogen receptor-α显示文摘OBJECTIVE:To evaluate the efficacy of Liuwei Dihuang formula(六味地黄方,LWDHF)on endothelial cells,and to study the mechanism behind the action of modulating expression of estrogen receptors.METHODS:Hydrogen peroxide(H_(2)O_(2))was applied to induce the apoptosis of human umbilical vein endothelial cells(HUVECs).The concentration of nitric oxide(NO),endothelial nitric oxide synthase(eNOS)and inducible NOS(iNOS)were measured by assay kits.Western blot and real-time polymerase chain reaction(RT-PCR)were used to detect the expression of iNOS,eNOS,b-cell lymphoma-2(Bcl-2),Bcl-2-associated X protein(Bax),estrogen receptor(ER)αand ERβ.Also,small interfering RNA(siRNA)was involved to confirm whether the protective effects of LWDHF was medicated by ERs.In vivo,the female rats were ovariectomized to establish postmenopausal vascular injury model.Then the model rats were divided into three groups and treated with saline,estradiol and LWDHF respectively.The concentration of NO and NOS in serum were measured by assay kits,and the expression of Bax,Bcl-2,ERαand ERβwere detected by western blot and immunohistochemistry.RESULTS:In vitro study,LWDHF significantly protected HUVECs from H_(2)O_(2)-induced apoptosis,with the increase of Bcl-2 and the decrease of Bax.The treatment with LWDHF inhibited concentration of NO and iNOS,and upregulated the expression of eNOS,ERαand ERβ.In addition,ERαsiRNA could block the protective effects of LWDHF,while ERβsiRNA showed little influence.In vivo,the treatment with LWDHF suppressed the vascular injury and reduced the level of NO and NOS.LWDHF increased the expression of Bcl-2,ERαand ERβ,as well as inhibiting the Bax expression.CONCLUSION:LWDHF could improve endothelial function and protect HUVECs from apoptosis via increasing the expression of ERα.CHEN Qi QI Xu FU Yu JI Tingting CHAO Ying LI Jun MENG Qinghai BIAN Huimin LI Yu 2021Journal of Traditional Chinese Medicine2021,41,2:3
6Study on drying and combustion process in grate-CFB incinerator显示文摘The drying and combustion process in the combined grate and circulating fluidized bed(grate-CFB) municipal solid waste(MSW) incinerator was investigated experimentally and mathematically.The drying grate bed was simulated by a muffle furnace,which could be controlled at a constant tempera-ture level.The kind of wastes,thickness of waste layer fed and temperature were chosen as the ad-justable parameters to study their effect on the drying process.The experimental results indicated that the hydrophilic wastes were more difficult to be dried than the hydrophobic wastes.The higher the temperature is the easier the waste is to be dried.The thinner waste layer is favorable to drying the waste.The pyrolysis experiment in the furnace showed that the higher temperature level could reduce the conversion rate of carbon to carbon monoxide.The semi-empirical mathematical model that in-cluded the bed material distribution submodel,volatile matter release submodel,carbon particle combustion submodel and so on was proposed.A 260 t/d grate-CFB incinerator was modeled and the model predicted bulk density agreed with the measured value from industrial field test.The predicted flue gas(e.g.CO2,CO) concentration deviated slightly from the industrial test data.The parameters and variables used in the model were determined by the experiments or practical field test.This model can be used to design the grate-CFB incinerator and guide its operation.QingHai Li YanGuo Zhang MeiQian Chen AiHong Meng ChangHe Chen 2009Science China(Technological Sciences)2009,52,5:3
7Trifolirhizin induces autophagy-dependent apoptosis in colon cancer via AMPK/mTOR signaling显示文摘Dear Editor,Colorectal cancer(CRC)is one of the most frequent diseases with high mortality around the world.Conventional treatments of CRC remain unsatisfactory due to the increasing recurrence rate and adverse reactions including neutropenia,drug resistance,etc.Recently,autophagy has been shown to be involved in regulating cancer development and progression by regulating apoptosis through pro-apoptosis proteins including caspases,in addition to being a potential target for cancer therapeutic intervention.1 Trifolirhizin(Supplementary Fig.S1a)is a natural flavonoid glycosides isolated from Sophora flavescens as well as a bioactive constituent of Xian-Lian-Ke-Li,a commercial traditional Chinese medicine for the cancer prevention.Numerous evidence manifested that trifolirhizin inhibited proliferative activity in melanoma B16 cell,lung cancer H23 cell,human ovarian A2780 cell,and human gastric cancer cell MKN45.2 However,its pharmacological effect and mechanism on CRC remain elusive.Herein,we evaluated the effect of trifolirhizin on autophagy and apoptosis on CRC as well as its related mechanisms,in order to provide evidence to develop a potential agent with less adverse effect in treating CRC.Dongdong Sun Weiwei Tao Feng Zhang Weixing Shen Jiani Tan Liu Li Qinghai Meng Yugen Chen Ye Yang Haibo Cheng 2020Signal Transduction and Targeted Therapy2020,5,1:3
8Rheb promotes brown fat thermogenesis by Notch-dependent activation of the PKA signaling pathway显示文摘Increasing brown and beige fat thermogenesis have an anti-obesity effect and thus great metabolic benefits.However,the molecular mechanisms regulating brown and beige fat thermogenesis remain to be further elucidated.We recently found that fat-specific knockout of Rheb promoted beige fat thermogenesis.In the current study,we show that Rheb has distinct effects on thermogenic gene expression in brown and beige fat.Fat-specific knockout of Rheb decreased protein kinase A(PKA)activity and thermogenic gene expression in brown adipose tissue of high-fat diet-fed mice.On the other hand,overexpression of Rheb activated PKA and increased uncoupling protein 1 expression in brown adipocytes.Mechanistically,Rheb overexpression in brown adipocytes increased Notch expression,leading to disassociation of the regulatory subunit from the catalytic subunit of PKA and subsequent PKA activation.Our study demonstrates that Rheb,by selectively modulating thermogenic gene expression in brown and beige adipose tissues,plays an important role in regulating energy homeostasis.Wen Meng Xiuci Liang Ting Xiao Jing Wang Jie Wen Hairong Luo Jianhui Teng Yanquan Fei Qinghai Zhang Bilian Liu Fang Hu juli Bai Meilian Liu Zhiguang Zhou Feng Liu 2019Journal of Molecular Cell Biology2019,11,9:2
9Structural Restoration of Degraded LiFePO_(4)Cathode with Enhanced Kinetics Using Residual Lithium in Spent Graphite Anodes显示文摘Enormous LiFePO_(4)(LFP)/graphite batteries retired from the market need urgent rational disposal and reutilization based on the degradation analysis of the evolutional mechanism for electrodes.Typically,Li inventory loss is one of the main reasons for the degradation of LFP-based batteries.The reduced portion of lithium in a cathode is inevitably consumed to form solid electrolyte interphase or trapped in the anode.Herein,we propose a comprehensive strategy for battery recycling and conduct the work by simply regenerating the degraded LFP materials directly with the extracted lithium compounds from spent anodes.Moreover,inter-particle three-dimensional(3D)conductive networks are built via an in situ carbonization to reinforce the electronic conductivity of regenerated cathodes.An improved electrochemical performance was achieved in the regenerated LFP materials even compared with the pristine LFP.This integrated recycling strategy not only brings more added value to the recycled materials by leveraging the recycling process but also aims to apply the concept of“treating waste with waste”and spur innovations in battery recycling technologies in the future.Min Fan Xin Chang Xin-Hai Meng Chao-Fan Gu Chao-Hui Zhang Qinghai Meng Li-Jun Wan Yu-Guo Guo 2023CCS Chemistry2023,5,5:2
10Ground-fault protection based on active component of zero-sequence current in resistance neutral grounded distribution systems 显示文摘Mu Longhua Meng Qinghai 2002Proceedings of IEEE TENCON 022002,3,:1
11Corrigendum to “Application of titanium dioxide in arsenic removal from water: A review” [J. Hazard. Mater. 215–216 (2012) 1–16]显示文摘Xiaohong Guan Juanshan Du Xiaoguang Meng Yuankui Sun Bo Sun Qinghai Hu 2012Journal of Hazardous Materials2012,,:1
12Analysis of discharge V-A characteristics in inductive intrinsically safe circuits 显示文摘Meng Qinghai(孟庆海) Xu Yunzhi(许允之)and Hu Tianlu(胡天禄) 1999Journal of China University of Mining &Technology(中国矿业大学学报)1999,28,4:1
13Diagnosis and Microsurgical Treatment of Cavernous Sinus Hemangioma显示文摘Dou Yihe Meng Qinghai Yan Zhiyong Xu Jian Che Shusheng Jiao Yingbing Wu Zheyu 2010Artificial Cells, Blood Substitutes and Biotechno2010,,2:1
14Morphological characteristics of Neoseiulus setarius Ma,Meng&Fan,sp.nov.(Acari:Phytoseiidae)from China显示文摘The genus Neoseiulus Hughes,1948 is one of the largest genera in Phytoseiidae and contains more than 364 valid species in the world.In this paper,a new species N.setarius Ma,Meng&Fan,sp.nov.is described based on both adult female and male specimens collected from Setaria viridis(L.)Beauv.(Gramineae),in Inner Mongolia of China.The adult females of the new species are characterized by having a fully reticulated dorsal shield,barbed Z5,bellshaped spermathecal calyx with a short basal stalk.Furthermore,seta R1 is off dorsal idiosomal shield in adult males.Min Ma Yu Liu Yujing Li Xiaotong Fu Qinghai Fan Ruixia Meng 2023Zoological Systematics2023,48,2:0
15Roadmap for rechargeable batteries:present and beyond显示文摘Rechargeable batteries currently hold the largest share of the electrochemical energy storage market,and they play a major role in the sustainable energy transition and industrial decarbonization to respond to global climate change.Due to the increased popularity of consumer electronics and electric vehicles,lithium-ion batteries have quickly become the most successful rechargeable batteries in the past three decades,yet growing demands in diversified application scenarios call for new types of rechargeable batteries.Tremendous efforts are made to developing the next-generation post-Li-ion rechargeable batteries,which include,but are not limited to solid-state batteries,lithium–sulfur batteries,sodium-/potassium-ion batteries,organic batteries,magnesium-/zinc-ion batteries,aqueous batteries and flow batteries.Despite the great achievements,challenges persist in precise understandings about the electrochemical reaction and charge transfer process,and optimal design of key materials and interfaces in a battery.This roadmap tends to provide an overview about the current research progress,key challenges and future prospects of various types of rechargeable batteries.New computational methods for materials development,and characterization techniques will also be discussed as they play an important role in battery research.Sen Xin Xu Zhang Lin Wang Haijun Yu Xin Chang Yu-Ming Zhao Qinghai Meng Pan Xu Chen-Zi Zhao Jiahang Chen Huichao Lu Xirui Kong Jiulin Wang Kai Chen Gang Huang Xinbo Zhang Yu Su Yao Xiao Shu-Lei Chou Shilin Zhang Zaiping Guo Aobing Du Guanglei Cui Gaojing Yang Qing Zhao Liubing Dong Dong Zhou Feiyu Kang Hu Hong Chunyi Zhi Zhizhang Yuan Xianfeng Li Yifei Mo Yizhou Zhu Dongfang Yu Xincheng Lei Jianxiong Zhao Jiayi Wang Dong Su Yu-Guo Guo Qiang Zhang Jun Chen Li-Jun Wan 2024Science China Chemistry2024,67,1:0
16Solid-state lithium-ion batteries for grid energy storage:opportunities and challenges显示文摘The energy crisis and environmental pollution drive more attention to the development and utilization of renewable energy.Considering the capricious nature of renewable energy resource,it has difficulty supplying electricity directly to consumers stably and efficiently,which calls for energy storage systems to collect energy and release electricity at peak periods.Due to their flexible power and energy,quick response,and high energy conversion efficiency,lithium-ion batteries stand out among multiple energy storage technologies and are rapidly deployed in the grid.Pursuing superior performance and ensuring the safety of energy storage systems,intrinsically safe solid-state electrolytes are expected as an ideal alternative to liquid electrolytes.In this review,we systematically evaluate the priorities and issues of traditional lithium-ion batteries in grid energy storage.Beyond lithium-ion batteries containing liquid electrolytes,solid-state lithium-ion batteries have the potential to play a more significant role in grid energy storage.The challenges of developing solid-state lithium-ion batteries,such as low ionic conductivity of the electrolyte,unstable electrode/electrolyte interface,and complicated fabrication process,are discussed in detail.Additionally,the safety of solid-state lithium-ion batteries is re-examined.Following the obtained insights,inspiring prospects for solid-state lithium-ion batteries in grid energy storage are depicted.Xin Chang Yu-Ming Zhao Boheng Yuan Min Fan Qinghai Meng Yu-Guo Guo Li-Jun Wan 2024Science China Chemistry2024,67,1:0
17An Industry Loses Its Shine显示文摘LIKE many successful businesspeople, Chen Jufeng, general manager of a tea company in Zhengzhou, Henan Province, finds the best expression of his wealth and taste in antique collecting. With eight years and hundreds of thousands of Yuan spent on his collection, he has acquired confidence in his discernment.MENG QINGHAI ZHOU YIXIANG 2010China Today2010,59,4:0
18MAGNETIC ACOUSTIC EMISSION CHARACTERISTICS OF HYDROGEN ATTACKED LOW CARBON STEEL显示文摘MAGNETICACOUSTICEMISSIONCHARACTERISTICSOFHYDROGENATTACKEDLOWCARBONSTEEL¥LIHiaogang;MENGQinghai;CHENHua;CHENJinwei;YAOZhiming;...LI Hiaogang MENG Qinghai CHEN Hua CHEN Jinwei YAO Zhiming KE Wei(State Key Laboratory of Corrosion Science,Institute of Corrosion and Protection of Metals,Chinese Academy of Sciences,Shenyang 110015,China)(Fushun Petroleum Institute,Fushun 113001,China) 1996Acta Metallurgica Sinica(English Letters)1996,9,2:0
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