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Uncertainty analysis of seawater intrusion forecasting

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Water Science and Engineering 2013年第4期6卷 380-391页

作者： zhong-wei zhao Jian zhao Chang-sheng FU State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering Hohai University College of Water Conservancy and Hydropower Engineering Hohai University Jiangsu Provincial Communication Planning and Design Institute

In order to describe the importance of uncertainty analysis in seawater intrusion forecasting and identify the main factors that might cause great differences in prediction results, we analyzed the influence of sea level rise, tidal effect, the seasonal variance of influx, and the annual variance of the pumping rate, as well as combinations of different parameters. The results show that the most important factors that might cause great differences in seawater intrusion distance are the variance of pumping rate and combinations of different parameters. The influence of sea level rise can be neglected in a short-time simulation （ten years, for instance）. Retardation of seawater intrusion caused by tidal effects is obviously important in aquifers near the coastline, but the influence decreases with distance away from the coastline and depth away from the seabed. The intrusion distance can reach a dynamic equilibrium with the application of the sine function for seasonal effects of influx. As a conclusion, we suggest that uncertainty analysis should be considered in seawater intrusion forecasting, if possible.

关键词： Key words: seawater intrusion forecasting uncertainty analysis deterministic model uncertainty model factorial design

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含钴三元硫化物常压硫酸浸出钴的动力学研究

Transactions of Nonferrous Metals Society of China 2024年第5期34卷 1669-1680页

作者：张丁川孙丰龙赵中伟刘旭恒陈星宇李江涛何利华中南大学冶金与环境学院长沙410083 中南大学稀有金属冶金与材料加工重点实验室长沙410083

开展含钴三元硫化物常压硫酸浸出的实验研究。考察搅拌速度、浸出温度、硫酸浓度和粒度对钴浸出率的影响,并分析从含钴三元硫化物中浸出钴的动力学。结果表明,在最佳条件下,钴和铁被选择性浸出,且浸出率均大于99%,而钼和铜则富集于浸出... 详细信息

开展含钴三元硫化物常压硫酸浸出的实验研究。考察搅拌速度、浸出温度、硫酸浓度和粒度对钴浸出率的影响,并分析从含钴三元硫化物中浸出钴的动力学。结果表明,在最佳条件下,钴和铁被选择性浸出,且浸出率均大于99%,而钼和铜则富集于浸出渣。通过对实验数据的分析可知,钴的浸出符合由固体产物层产生的收缩核模型,且浸出过程受内扩散控制。浸出反应的活化能为49.86k J/mol,硫酸浓度和粒度的反应级数分别为0.57和-1.4。

关键词：钴白合金含钴三元硫化物钴硫酸浸出动力学

同心圆式反应器中精确调控和连续制备β-四钼酸铵

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Transactions of Nonferrous Metals Society of China 2024年第1期34卷 309-321页

作者：李江涛罗勇进李志超赵中伟刘旭恒陈星宇何利华孙丰龙张宁中南大学冶金与环境学院长沙410083 中南大学稀有金属冶金与材料制备湖南省重点实验室长沙410083 中南林业科技大学理学院长沙410004

采用同心圆式反应器制备β-四钼酸铵,研究制备过程中Mo离子聚合形态和微观结构受溶液酸度影响的变化规律。结果表明,将溶液的pH值控制在2.5以下可以得到四钼酸铵晶体;采用NH_(3)·H_(2)O将溶液pH值调回至3.0有利于细粒钼酸铵结晶的溶解... 详细信息

采用同心圆式反应器制备β-四钼酸铵,研究制备过程中Mo离子聚合形态和微观结构受溶液酸度影响的变化规律。结果表明,将溶液的pH值控制在2.5以下可以得到四钼酸铵晶体;采用NH_(3)·H_(2)O将溶液pH值调回至3.0有利于细粒钼酸铵结晶的溶解,并促进七钼酸铵向四钼酸铵结晶的转变;降低(NH_(4))_(4)Mo_(4)O_(12)(O_(2))2·2H_(2)O晶体与结晶母液的接触时间有利于获得β-(NH_(4))_(2)Mo_(4)O_(13)结晶。基于钼的聚合机理,设计多个格区的同心圆反应器,实现钼酸铵结晶的分区域调控。通过调控硝酸、氨水和含晶种的母液在各格区中加入的位置和时机,可制备出优质的β-(NH_(4))_(2)Mo_(4)O_(13)结晶。

关键词： β-四钼酸铵酸化离子聚合同心圆式反应器

Crystal Structure and Spectra Characters of 2-Benzoly-3-(4-(1,2,4-triazole)-5-anilino-thiophene and 2-(4-Methyl-benzoly)-3-(4- chlrolphenyl)-3-(1,2,4-triazole)-5-anilino-thiophene

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有机化学 2004年第Z1期24卷 25-26页

作者： CAO,Ke-Guang WANG,zhong-wei zhao,Xin-Qi School of Material Science and Engineering Beijing Institute of Technology Beijing 100081 Chengde Petroleum College Chengde 067000 School of Material Science and Engineering Beijing Institute of Technology Beijing 100081 School of Material Science and Engineering Beijing Institute of Technology Beijing 100081

　　Triazole derivatives are widely studied, because they represent the largest group of modern fungicides and are widely used both in human and veterinary therapy and in agriculture. We synthesized the title compound in which the thiophene ring was substituted by a 1,2,4-triazole group, a phenacyl group, a phenylaminol group and a benzene ring.……

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Multiple primary malignancies-hepatocellular carcinoma combined with splenic lymphoma:A case report

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World Journal of Clinical Cases 2022年第28期10卷 10130-10135页

作者： Fa-Zong Wu Xiao-Xiao Chen wei-Yue Chen Qiao-Hong Wu Jian-Ting Mao zhong-wei zhao Key Laboratory of Imaging Diagnosis and Minimally Invasive Intervention Research The Fifth Affiliated Hospital of Wenzhou Medical UniversityLishui Hospital of Zhejiang UniversityLishui 323000Zhejiang ProvinceChina

BACKGROUND Primary liver cancer is one of the most common malignant tumours,while primary splenic lymphoma is a rare ***,cases of hepatocellular carcinoma(HCC)combined with splenic lymphoma are extremely *** SUMMARY We present a 62-year-old woman who was admitted to the Interventional Radiology Department with a lump in the spleen and liver as well as multiple enlarged lymph nodes visible by ***-enhanced computed of the abdomen revealed a circular,low-density,shallow mass(approximately 2.6 cm in diameter)in the left intrahepatic lobe and multiple round,low-density shadows in the spleen with clear boundaries(maximum diameter 7.6 cm).Based on the characteristic clinical symptoms and explicit radiological findings,the clinical diagnosis was HCC with metastasis to the liver portal,retroperitoneal lymph nodes,and *** transcatheter arterial chemoembolization and sequential radiofrequency ablation,the-fetoprotein level returned to the normal range,and the hepatitis B cirrhosis *** addition,splenic tumour biopsy confirmed the diagnosis of primary malignant lymphoma,which went into remission after *** HCC with primary splenic non-Hodgkin lymphoma is extremely rare and easily *** understanding would facilitate early diagnosis,treatment and prognosis.

关键词： Multiple primary malignancies Hepatocellular carcinoma Splenomegaly Extra-hepatic primary malignancy Magnetic resonance imaging Primary non-Hodgkin’slymphoma Case report

On d-Dimensional Lattice (co)sine n-Algebra

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Communications in Theoretical Physics 2016年第10期65卷 423-430页

作者： Shao-Kui Yao Lu Ding Peng Liu Chun-Hong Zhang wei-zhong zhao School of Mathematical Sciences Capital Normal University Beijing 100048 China Institute of Applied Mathematics Academy of Mathematics and Systems Science Chinese Academy of Sciences Beijing 100190 China National Center for Mathematics and Interdisciplinary Sciences Academy of Mathematics and Systems Science Chinese Academy of Sciences Beijing 100190 China

We present the(co)sine n-algebra which is indexed by the d-dimensional integer *** to the associative operators,this generalized(co)sine n-algebra is the higher order Lie algebra for the n even *** particular cases are the d-dimensional lattice sine 3 and cosine 5-algebras with the special parameter *** find that the corresponding d-dimensional lattice sine 3 and cosine 5-algebras are the Nambu 3-algebra and higher order Lie algebra,*** limiting case of the d-dimensional lattice(co)sine n-algebra is also *** we construct the super sine n-algebra,which is the super higher order Lie algebra for the n even case.

关键词： infinite-dimensional algebra sine algebra Nambu 3-algebra n-algebra

Chemoselective labeling-based spermatozoa glycan imaging reveals abnormal glycosylation in oligoasthenotspermia

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Chinese Chemical Letters 2024年第4期35卷 475-480页

作者： Lijia Xu Tong zhong wei zhao Bing Yao Lin Ding Huangxian Ju State Key Laboratory of Analytical Chemistry for Life Science School of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210023China Department of Reproductive Medical Center Jinling HospitalSchool of MedicineNanjing UniversityNanjing 210002China Chemistry and Biomedicine Innovation Center(ChemBIC) Nanjing UniversityNanjing 210023China Center of Clinical Laboratory Science The Affiliated Cancer Hospital of Nanjing Medical University&Jiangsu Cancer Hospital&Jiangsu Institute of Cancer ResearchNanjing 210009China

Spermatogenesis, maturation, capacitation and fertilization are precisely regulated by glycosylation. However, the relationship between altered glycosylation patterns and the onset and development of reproductive disorders is unclear, mainly limited by the lack of in situ imaging techniques for spermatozoa glycosylation. We developed an efficient and highly specific spermatozoa glycan imaging technique based on the robust chemoselective labeling of sialic acid(Sia) and N-acetyl-D-galactosamine(Gal/GalNAc). We further proposed a “tandem glycan chemoselective labeling” strategy to achieve simultaneous imaging of two types of glycans on spermatozoa. We applied the developed method to the spermatozoa from oligozoospermic patients and diabetic mice and found that these spermatozoa showed higher levels of Sia and Gal/Gal NAc expression than the normal groups. Moreover, spermatozoa from diabetic mice showed a severe decrease in number, viability, and forward motility, suggesting that in vivo glucose metabolism disorders may lead to an elevated level of spermatozoa glycosylation and have a correlation with the development of oligoasthenotspermia. Our work provides a research tool to reveal the relationship between glycosylation modification and spermatozoa quality, and a promising clue for the development of glycan-based reproductive markers.

关键词： Spermatozoa Glycan Chemoselective labeling Oligoasthenotspermia Fluorescence imaging

Dynamic recrystallization behavior and strengthening mechanism of a novel Mo-Ti_(3)AlC_(2) alloy at ultrahigh temperature

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Rare Metals 2024年第8期43卷 3946-3960页

作者： Lu Yang Xin-Yuan Zheng Yang zhao Xi-Ran Wang Fang-Nao Xiao Shi-zhong wei School of Materials Science and Engineering Henan University of Science and TechnologyLuoyang 471023China National Joint Engineering Research Center for Abrasion Control and Molding of Metal Materials Henan University of Science and TechnologyLuoyang 471003China Department of Applied Mechanics Univ.Bourgogne FrancheComteFEMTO-ST InstituteCNRS/UF/ENSMM/UTBM25000BesangonFrance

Increasing the recrystallization temperature to achieve better high-temperature performance is critical in the development of molybdenum alloys for ultrahightemperature applications,such as the newest generation of multitype high-temperature nuclear *** this study,an innovative strategy was proposed to improve the performance of molybdenum alloys at high temperature by using the two-dimensional MAX(where M is an early transition metal,A is an A-group element and X is C or N)ceramic material Ti_(3)AlC_(2).The relationships between flow stress,strain rate and temperature were *** microstructure,distribution of misorientation and evolution of dislocations in the Mo-Ti_(3)AlC_(2) alloy were *** microscopic mechanism of the Ti_(3)AlC_(2) phase in the molybdenum alloy at high temperatures was *** experimental results showed that the peak flow stress of Mo-Ti_(3)AlC_(2) at 1600℃ reached 155 MPa,which was161.8% greater than that of pure *** activation energy of thermal deformation of Mo-Ti_(3)AlC_(2) was as large as537 kJ·mol~(-1),which was 17.6% more than that of pure *** recrystallization temperature reached 1600℃ or even *** topological reaction of the Ti_(3)AlC_(2) phase consumed a large amount of energy at high temperatures,resulting in increases in the deformation activation *** structures of AlTi_3 and Ti-O Magneli-phase oxides(Ti_nO_(2n-1)) were formed in-situ,which relied on kink bands and interlayer slip,resulting in many dislocations during ***,the special two-dimensional of the structure Ti_(3)AlC_(2) ceramic inhibited the recrystallization behavior of the Mo *** results of this study can provide theoretical guidance for the development of a new generation of molybdenum alloys for use in ultrahigh-temperature environments.

关键词： Mo alloy Two-dimensional reinforcement Dynamic recrystallization behavior Hot deformation Mechanical properties

Managing a One Trillion Dollar Forex Nest Egg

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Beijing Review 2006年第47期49卷 16-17页

作者： zhong wei zhao XIJUN

As China’s foreign exchange (forex) reserves exceeded $1 trillion in early November, much debate exists about the possible impacts of this ballooning wealth on China’s economy and how to properly manage it. In two separate articles carried in People’s Daily Online, zhong wei, a professor at the Financial Research Center in Beijing Normal University, and zhao Xijun, Vice President of the School of Finance of Renmin University of China, contribute their ideas.

关键词： Managing a One Trillion Dollar Forex Nest Egg