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A multi-objective optimization approach for harnessing rainwater in changing climate

Advances in Climate Change Research 2024年第5期15卷 976-987页

作者： Ling-Yu MENG Zhan TIAN Dong-Li FAN Frans H.M.VAN DE VEN Laixiang sun Qing-Hua YE san-xiang sun Jun-Guo LIU Laura NOUGUES Daan ROOZE School of Chemical and Environmental Engineering Shanghai Institute of TechnologyShanghai 201418China Guangdong Provincial Key Laboratory of Soil and Groundwater Poution Control School of Environmental Science and EngineeringSouthern University of Scienceand TechnologyShenzhen 518055China Pengcheng Laboratory Shenzhen 518000China Deltares Delft 2629 HVNetherlands Water Management Faculty of Civil Engineering and GeosciencesDelft University of TechnologyDelft 2628 CNNetherlands Department of Geographical Sciences University of MarylandMaryland 20742United States School of Environmental and Municipal Engineering Lanzhou Jiaotong UniversityLanzhou 730070China

As the world grapples with the profound impacts of climate change,water scarcity has become a pressing ***,there is a shortage of in-depth research on the trade-offs between water resource dependence and the economic,ecological,and social needs of arid and semi-arid regions like Lanzhou,*** cultivation in Lanzhou relies heavily on the Yellow River,often overlooking the potential of natural *** we first calibrated a water balance model through artificial precipitation experiments in a Soil and Water Conservation Demonstration Park in *** then developed a multi-objective optimization model to balance the cost-benefit considerations of various plausible measures across economic,ecological,and social dimensions in the searching for solutions that are more adaptable to climate change and local devel-opment *** simulations show that the solutions we designed can effectively manage water-shortage days,significantly reduce Yellow River water extraction,and improve cost-effectiveness,meeting 66%-80%of water needs for flower cultivation in the studied *** findings highlight the potential of rainwater collection and utilization solutions to mitigate water scarcity in arid and semi-arid cities,thereby enriching water resource management.

关键词： Rainwater harvesting Rainwater resource utilization Climate change adaptation Multi-objective decision making Arid and semi-arid regions

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Predictive Analysis of Susceptibility of Different Species to SARS-CoV-2 based on ACE2 Receptors

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Biomedical and Environmental Sciences 2020年第11期33卷 877-881页

作者： XU Xiao Gang WANG Huan WANG san Ying ZHANG Jing sun Chuan WEI Ming xiang YAN Jing MAO Gen xiang Zhejiang Provincial Key Lab of Geriatrics&Geriatrics Institute of Zhejiang Province Department of GeriatricsZhejiang HospitalHangzhou 310013ZhejiangChina The George Washington University Department of BiostatisticsWashington DC 20052USA

Coronavirus Disease 2019(COVID-19)is a pulmonary inflammatory disease caused by infection with the highly pathogenic new coronavirus(SARSCo V-2)[1].To date,COVID-19 has spread to at least210 countries and territories,infected more than10.94 million people,and killed more than 519,000 people,according to Johns Hopkins *** April 15,2020,the COVID-19 outbreak was declared a global health emergency[2].

关键词： ACE2 Hopkins Receptor

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Impact of non-oncological factors on tumor recurrence after liver transplantation in hepatocellular carcinoma patients

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World Journal of Gastroenterology 2016年第9期22卷 2749-2759页

作者： xiang-Qian Gu Wei-Ping Zheng Da-Hong Teng Ji-san sun Hong Zheng Organ Transplant Center The First Central Clinical College Tianjin Medical University Organ Transplant Center Tianjin First Central Hospital

Hepatocellular carcinoma (HCC) is the most common primary neoplasm of the liver and is one of the leading causes of cancer-related death worldwide. Liver transplantation (LT) has become one of the best curative therapeutic options for patients with HCC, although tumor recurrence after LT is a major and unaddressed cause of mortality. Furthermore, the factors that are associated with recurrence are not fully understood, and most previous studies have focused on the biological properties of HCC, such as the number and size of the HCC nodules, the degree of differentiation, the presence of hepatic vascular invasion, elevated serum levels of alpha-fetoprotein, and the tumor stage outside of the Milan criteria. Thus, little attention has been given to factors that are not directly related to HCC (i.e., “non-oncological factors”), which have emerged as predictors of tumor recurrence. This review was performed to assess the effects of non-oncological factors on tumor recurrence after LT. The identification of these factors may provide new research directions and clinical strategies for the prophylaxis and surveillance of tumor recurrence after LT, which can help reduce recurrence and improve patient survival.

关键词： Liver transplantation Immunosuppressive agents Hepatocellular carcinoma Recurrence Living donor Deceased donor

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Caustic Failure of Thermal Insulated Tubing in Steam Flooding

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Journal of Materials Science & Technology 1997年第1期13卷 27-36页

作者： Xian, AP san, YY Zhang, D Wang, YK sun, HP LIAOHE OIL FIELD MACHINERY PLANT PANJIN 124209PEOPLES R CHINA

The coupling of the pre-stressed thermal insulated tubing string broke down inside the steam flooding welts, after the tubing were used in high temperature and high pressure steam for about two years. With further check, it was found that most of the weld joints between the inner and outer tubing also cracked. The failure analysis for the accidents has been carried out by the analysis of chemical composition for the steels, microstructure observation, mechanical property tests, and the investigation of the service environment etc.. The results show that the early damage of the pre-stressed thermal insulated tubing string is mainly induced by the caustic stress corrosion, which can be strengthened by an unstable microstructure of the coupling serviced at high temperature for a long time. Moreover, the high pre-stress design on the thermal insulated pipe for the cyclic steam injection may be not suitable to the situation of steam flooding, which would result in the weld joint cracking.

关键词： Steel pipe

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A novel constitutive promoter and its downstream 5′ UTR derived from cotton(Gossypium spp.) drive high-level gene expression in stem and leaf tissues

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Journal of Integrative Agriculture 2016年第4期15卷 755-762页

作者： sun Bao sun Guo-qing MENG Zhi-gang ZHANG Rui GUO san-dui Biotechnology Research Institute Chinese Academy of Agricultural Sciences

The development of genetically modified crops requires new promoters and regulatory regions to achieve high gene ex- pression and/or tissue-specific expression patterns in plants. To obtain promoter sequences of plants with new properties, we analyzed the expression traits of the cotton （Gossypium hirsutum） translation elongation factor 1A gene family. The results showed that the GhEF1A8 gene is highly expressed in different organs of cotton plants, and showed much higher transcript levels in stems and leaves. Its promoter （GhEFIA1.7） and the 5＂ untranslated region （5＂ UTR）, comprising a regulatory region named PGhEFIA8, were isolated from cotton and studied in stably transformed tobacco plants. The regulatory region sequences were fused to the 13-glucuronidase （GUS） reporter gene to characterize its expression pattern in tobacco. Histochemical and fiuorometric GUS activity assays demonstrated that PGhEF1A8 could direct GUS gene expression in all tissues and organs in transgenic tobacco, including leaves, stems, flowers, and roots. The level of GUS activity in the leaves and stems was significantly higher than in cauliflower mosaic virus （CaMV） 35S promoter：：GUS plants, but as same as CaMV 35S promoter：：GUS plants in flower and root tissues. GUS expression levels decreased 2-10-fold when the 5＂ UTR was absent from PGhEF1A8. Deletion analysis of the PGhEFIA8 sequence showed that the region -647 to -323 might possess negative elements that repress transgene expression in tobacco plants. The results suggested that the GhEFIA8 regulation region may represent a practical choice to direct high-level constitutive expression of transgenes and could be a valuable new tool in plant genetic engineering.

关键词： Gossypium hirsutum plant genetic engineering qPCR promoter 5" untranslated region histochemistry,fluorometry GUS

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Design, assembly, and pre-commissioning of cryostat for 3W1 superconducting wiggler magnet

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Nuclear Science and Techniques 2020年第11期31卷 78-92页

作者： Miao-Fu Xu xiang-Zhen Zhang Rui Ye Fu-san Chen Xiao-Chen Yang Tong-Xian Zhao Shao-Peng Li Xian-Jing sun Liang-Rui sun Chang-Cheng Ma Rui Ge Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China Key Laboratory of Particle Acceleration Physics and Technology Chinese Academy of SciencesBeijing 100049China Center for Superconducting RF and Cryogenics Institute of High Energy PhysicsBeijing 100049China University of Chinese Academy of Sciences Beijing 100049China

One of the most important devices for the High Energy Photon Source Test Facility project,the 2.6 T 32-pole 3W1 superconducting wiggler,was designed by the Institute of High Energy Physics(IHEP);its magnetic gap is 68 mm,and its storage energy is 286 *** will be installed at the storage ring of the Beijing Electron Positron Collider Upgrade Project at the IHEP to replace the old permanent *** primary purpose of the cryostat is to create a safe and reliable system and realize long-term operation with zero liquid helium *** maintain liquid helium temperature,four identical two-stage cryocoolers are placed symmetrically at the wiggler *** cryostat has only one 60 K thermal shield,which is used to reduce the heat load to the liquid helium *** cryostat has several novel features,including a suspension system with little heat leakage that is self-centered during cooling of the cryostat,a special copper liner and high-efficiency condensers,three pairs of binary current leads,and three-level safety *** cryogenic system has been cooled three times,and the residual cooling capacity is approximately 0.41 W at 4.2 K without current.

关键词： Cryostat Cryocooler Superconducting wiggler Superconducting insertion device

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Effect of Some Metal Ion Dopants on Electrochemical Properties of Ni(OH)_2 Film Electrode

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Chemical Research in Chinese Universities 2003年第4期19卷 494-498页

作者： ZHANG Heng-bin LIU Han-san CAO Xue-jing sun Chia-chung College of Chemistry State Key Laboratory of Theoretical and Computational ChemistryInstitute of Theoretical ChemistryJilin UniversityChangchun 130023P.R.China

The Ni(OH) 2 film electrodes doped respectively with alkali-earth metal aluminum, lead, partial transition metal and some rare-earth metal(altogether 17 kinds of metals) ions were prepared by cathode electrodeposition. The electrode reaction reversibility, the difficult extent of oxygen evolution, the proton diffusion coefficient, the discharge potential of middle value and the active material utilization of the Ni(OH) 2 film electrode were compared with those of the ones doped with the metal ions by means of cyclic voltammetry, potential step and constant current charge-discharge experiments. It was found that Ca 2+ , Co 2+ , Cd 2+ , Al 3+ etc. have obviously positive effect.

关键词： Film electrode Electrochemical properties Metal ion dopant

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Modulating metal-organic frameworks for catalyzing acidic oxygen evolution for proton exchangemembrane water electrolysis

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SusMat 2021年第4期1卷 460-481页

作者： Xiaomin Xu Hainan sun san Ping Jiang Zongping Shao WA School of Mines:Minerals Energy and Chemical Engineering(WASM-MECE)Curtin UniversityPerthWestern Australia 6102Australia Department of Materials Science and Engineering Korea Advanced Institute of Science and Technology(KAIST)Daejeon 34141Republic of Korea State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical EngineeringNanjing Tech UniversityNanjing 211816China

Proton exchangemembrane(PEM)water electrolysis represents one of the most promising technologies to achieve green hydrogen production,but currently its practical viability is largely affected by the slow reaction kinetics of the anodic oxygen evolution reaction(OER)in an acidic *** noble metal-based catalysts containing iridium or ruthenium are excellent catalysts for the acidic OER,their practical use in PEM electrolyzers is hindered due to their low abundance and high *** recently,metal-organic frameworks(MOFs)have been demonstrated as a perfect platform to facilitate the design of acidic OER catalysts with both high efficiency and ***,we pro-vide a timely and comprehensive overview of the recent progress on MOF-based acidic OER *** fundamental mechanisms of the acidic OER are first introduced,followed by a summary of the development of pristine MOFs and MOF derivatives as acidic OER ***,a number of catalyst design strategies are discussed aiming at improving the acidic OER catalytic per-formance of MOF-based *** integration of MOF-based catalysts into real PEM water electrolyzers is also ***,future research directions are provided to achieve better MOF-based catalysts operational in acidic envi-ronments and PEM devices.

关键词： acidic water oxidation electrocatalysis hydrogen production metal-organic frameworks oxy-gen evolution reaction proton exchange membrane water electrolysis

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Scan BIST with biased scan test signals

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Science in China(Series F) 2008年第7期51卷 881-895页

作者： xiang Dong CHEN MingJing sun JiaGuang School of Software Tsinghua University Beijing 100084 China Deptartment of Computer Science and Engineering University of California San Diego La Jolla CA 92093 USA

The conventional test-per-scan built-in self-test （BIST） scheme needs a number of shift cycles followed by one capture cycle. Fault effects received by the scan flipflops are shifted out while shifting in the next test vector like scan testing. Unlike deterministic testing, it is unnecessary to apply a complete test vector to the scan chains. A new scan-based BIST scheme is proposed by properly controlling the test signals of the scan chains. Different biased random values are assigned to the test signals of scan flip-flops in separate scan chains. Capture cycles can be inserted at any clock cycle if necessary. A new testability estimation procedure according to the proposed testing scheme is presented. A greedy procedure is proposed to select a weight for each scan chain. Experimental results show that the proposed method can improve test effectiveness of scan-based BIST greatly, and most circuits can obtain complete fault coverage or very close to complete fault coverage.

关键词： random testability scan-based BIST test signal biased random testing

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A neutron diffraction investigation of high valent doped barium ferrite with wideband tunable microwave absorption

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Journal of Advanced Ceramics 2022年第2期11卷 263-272页

作者： Jun LI Yang HONG san HE Weike LI Han BAI Yuanhua XIA Guangai sun Zhongxiang ZHOU School of Physics Harbin Institute of TechnologyHarbin 150001China Heilongjiang Provincial Key Laboratory of Plasma Physics and Application Technology Harbin Institute of TechnologyHarbin 150001China School of Chemistry and Chemical Engineering Harbin Institute of TechnologyHarbin 150001China Key Laboratory for Neutron Physics of CAEP Institute of Nuclear Physics and ChemistryMianyang 621999China

The barium ferrite BaTi_(x)Fe_(12−x)O_(19)(x=0.2,0.4,0.6,0.8)(BFTO-x)ceramics doped by Ti4+were synthesized by a modified sol–gel *** crystal structure and magnetic structure of the samples were determined by neutron diffraction,and confirm that the BFTO-x ceramics were high quality single phase with sheet *** x increasing from 0.2 to 0.8,the saturation magnetization(M_(s))decreases gradually but the change trend of coercivity(H_(c))is complex under the synergy of the changed grain size and the magnetic crystal anisotropy *** on the high valence of Ti^(4+),double resonance peaks are obtained in the curves of the imaginary part of magnetic conductivity(μ′′)and the resonance peaks could move toward the low frequency with the increase of x,which facilitate the samples perform an excellent wideband modulation microwave absorption *** the x=0.2 sample,the maximum reflection loss(RL)can reach−44.9 dB at the thickness of only 1.8 mm,and the bandwidth could reach 5.28 GHz at 2 mm when RL is less than−10 *** the BFTO-x ceramics show excellent frequency modulation ability varying from 18(x=0.8)to 4 GHz(x=0.4),which covers 81%of the investigated frequency in microwave absorption *** work not only implements the tunable of electromagnetic parameters but also broadens the application of high-performance microwave absorption devices.

关键词： barium ferrite neutron diffraction microwave absorption

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