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Energy Estimates on Existence of Extremals for Trudinger–Moser Inequalities

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Acta Mathematica Sinica,English Series 2020年第7期36卷 829-841页

作者： Ya min WANG School of Mathematics Renmin University of ChinaBeijing 100872P.R.China

LetΩbe a smooth bounded domain in R2,W01,2(Ω)be the standard Sobolev *** the method of energy estimate developed by Malchiodi–Martinazzi(***.,16,893–908(2014)),Mancini–Martinazzi(*** Differential Equations,56,94(2017))and Mancini–Thizy(*** Equations,266,1051–1072(2019)),we reprove the results of Carleson–Chang(***.,110,113–127(1986)),Flucher(***.,67,471–497(1992)),Li(Acta ***.,22,545–550(2006))and Su(***.,in press).Namely,for any real numberα≤1,the supremum■can be achieved by some function v∈W01,2(Ω)with║?v║22≤4π.

关键词： space. Existence 1,2

Crystal Structure of Nicotinic Acid·3,5-dinitrobenzoic Acid Organic Adduct

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Chinese journal of Structural Chemistry 2004年第4期23卷 417-420页

作者： ZHUjun ZHENGji-min DepartmentofChemistry NankaiUniversityTianjin300071China

The title compound nicotinic acid3,5-dinitrobenzoic acid (NDNT) has been obtained by the reaction of nicotinic acid with 3,5-dinitrobenzoic acid in deionic water at room temperature. The crystal is of monoclinic, space group P21/n with a = 14.053(6), b = 5.046(2), c = 20.105(8) ? ?= 103.573(8)? C13H9N3O8, Mr = 335.23, Z = 4, V = 1385.8(10) 3, Dc = 1.607 g/cm3, (Mok? = 0.137 mm-1, F(000) = 688, R = 0.0435 and wR = 0.0993 for 1239 observed reflections (I > 2(I)). In the crystals, the asymmetric unit contains one nicotinic acid (C6H5NO2) and one 3,5- dinitrobenzoic acid (C7H4N2O6) molecules which are linked by some hydrogen bonds to form a twenty-membered hydrogen-bonded ring and an extended linear structure.

关键词： crystal structure nicotinic acid·3,5-dinitrobenzoic acid synthesis

Gene functional research using polyethylenimine-mediated in vivo gene transfection into mouse spermatogenic cells

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Asian journal of Andrology 2006年第1期8卷 53-59页

作者： Li Lu min Lin min Xu Zuo-min Zhou jia-Hao Sha Laboratory of Reproductive Medicine Department of Histology and Embryology Nanjing Medical University Nanjing210029 China

Aim： To study polyethylenimine （PEI）-mediated in vivo gene transfection into testis cells and preliminary functional research of spermatogenic cell-specific gene NYD-SP12 using this method. Methods： PEI/DNA complexes were introduced into the seminiferous tubules of mouse testes using intratesticular injection. Transfection efficiency and speciality were analyzed on the third day of transfection with fluorescent microscopy and hematoxylin staining. The long-lasting expression of the GFP-NYD-SP12 fusion protein and its subcelluar localization in spermatogenic cells at different stages were analyzed with fluorescent microscopy and propidium iodide staining. Results： With the mediation of PEI, the GFP-NYD-SP12 fusion gene was efficiently transferred and expressed in the germ cells （especially in primary spermatocytes）. Transfection into Sertoli cells was not observed. The subcellular localization of the GFP-NYD-SP2 fusion protein showed dynamic shifts in spermatogenic cells at different stages during spermatogenesis. Conclusion： PEI can efficiently mediate gene transfer into spermatocytes. Thus, it might be useful for the functional research of spermatogenic-cell specific genes such as the NYD-SP12 gene. In our gtudy, the NYD-SP12 protein was visualized and was involved in the formation of acrosome during spermatogenesis. Our research will continue into the detailed function of NYD-SP12 in spermatocytes. （Asian j Androl 2006 jan; 8： 53-59）

关键词： gene transfer techniques polyethylenimine NYD-SP12 gene spermatogenic cells spermatogenesis

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1-萘酚的太赫兹光谱实验及理论研究

原子与分子物理学报 2025年第4期42卷 33-39页

作者：王利民朱立江孙延华国家能源集团煤焦化有限责任公司乌海016000

1-萘酚是煤化工产物萘的合成产物,对环境和人体健康有危害.采用太赫兹时域光谱(THz-TDS)技术,获得了1-萘酚在0.5~4.0 THz范围内的实测太赫兹吸收谱,同时运用密度泛函理论(DFT)平面波赝势模型对1-萘酚晶胞模型进行理论光谱计算,探讨了平... 详细信息

1-萘酚是煤化工产物萘的合成产物,对环境和人体健康有危害.采用太赫兹时域光谱(THz-TDS)技术,获得了1-萘酚在0.5~4.0 THz范围内的实测太赫兹吸收谱,同时运用密度泛函理论(DFT)平面波赝势模型对1-萘酚晶胞模型进行理论光谱计算,探讨了平面波截断能在800~1600 eV范围内对理论光谱的影响,并对吸收峰的振动模式进行了理论归属.实验结果表明,1-萘酚在0.5~4.0 THz范围内有1.14 THz、1.60 THz、2.16 THz、2.81 THz、3.56 THz共5个吸收峰,平面波截断能1400 eV下得到的理论吸收谱与实测吸收谱在吸收峰个数、峰位、归一化峰强度上均有较好的一致性,5个吸收峰的振动模式均是以两元环为平面的受氢键束缚的面外摇摆振动或者面内扭转振动引起的.这为太赫兹技术对1-萘酚的识别提供了实验和理论基础,具有一定的理论意义和实际应用价值.

关键词：太赫兹密度泛函理论(DFT) 理论光谱 1-萘酚

Calibration of soft sensor by using just-in-time modeling and Ada Boost learning method

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Chinese journal of Chemical Engineering 2016年第8期24卷 1038-1046页

作者： Huan min Xionglin Luo Department of Automation China University of PetroleumBeijing

Soft sensor is an efficacious solution to predict the hard-to-measure target variable by using the process *** practical application scenarios, however, the feedback cycle of target variable is usually larger than that of the process variables, which causes the deficiency of prediction errors. Consequently soft sensor cannot be calibrated timely and deteriorates. We proposed a soft sensor calibration method by using just-in-time modeling and Ada Boost learning method. A moving window consisting of a primary part and a secondary part is *** primary part is made of history data from certain number of constant feedback cycles of target variable and the secondary part includes some coarse target values estimated initially by just-in-time modeling during the latest feedback cycle of target variable. The data set of the whole moving window is processed by Ada Boost learning method to build an auxiliary estimation model and then target variable values of the latest corresponding feedback cycle are reestimated. Finally the soft sensor model is calibrated by using the reestimated target variable values when the target feedback is unavailable; otherwise using the feedback value. The feasibility and effectiveness of the proposed calibration method is tested and verified through a series of comparative experiments on a pH neutralization facility in our laboratory.

关键词： Process control Measurement Soft sensor Calibration Deterioration Moving window just-in-time Ada Boost

What decarbonized the residential building operation worldwide since the 2000s

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Petroleum Science 2022年第6期19卷 3194-3208页

作者： min-Da Ma min-Xia Chen Wei Feng jing-Wen Huo Building Technology&Urban Systems Division Lawrence Berkeley National LaboratoryBerkeleyCA 94720United States School of Management Science and Real Estate Chongqing UniversityChongqing400045PR China Department of Earth System Science Tsinghua UniversityBeijing100084PR China

Decarbonization in operational residential buildings worldwide has become critical in achieving the carbon neutral target due to the growing household energy *** accelerate the pace of global carbon neutrality,this study explores the operational carbon change in global residential buildings through the generalized Divisia index method and decoupling analysis,considering the decarbonization levels of residential buildings at different *** results show that(1)most of the samples showed a decrease in the total emissions from 2000 to *** for China and the United States(US),the carbon emissions in global residential building operations decreased by 7.95 million tons of carbon dioxide(MtCO_(2))per year over the study *** per gross domestic product(GDP)was the most positive driver causing the decarbonization of residential buildings,while GDP was the most negative driver.(2)Carbon intensity was essential to achieving a strong decoupling of economic development and carbon *** US almost consistently presented strong decoupling,while China showed weak decoupling over the last two decades.(3)The pace of decarbonization in global residential building operations is gradually slowing *** 2000 to 2019,decarbonization from residential buildings across 30 countries was 2094.3 MtCO_(2),with a decarbonization efficiency of 3.4%.Overall,this study addresses gaps in evaluating global decarbonization from operational residential buildings and provides a reference for evaluating building decarbonization by other emitters.

关键词： Global residential building Operational decarbonization Generalized divisia index method Decoupling elasticity Building decarbonization strategies

Magnetically stabilized bed reactor for selective hydrogenation of olefins in reformate with amorphous nickel alloy catalyst

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China Particuology 2007年第1期5卷 134-139页

作者： Xuhong Mu Enze min Research Institute of Petroleum Processing (RIPP) SINOPEC Beijing 100083 China

A magnetically stabilized bed （MSB） reactor for selective hydrogenation of olefins in reformate was developed by combining the advantages of MSB and amorphous nickel alloy catalyst. The effects of operating conditions, such as temperature, pressure, liquid space velocity, hydrogen-to-oil ratio, and magnetic field intensity on the reaction were studied. A mathematical model of MSB reactor for hydrogenation of olefins in reformate was established. A reforming flow scheme with a post-hydrogenation MSB reactor was proposed. Finally, MSB hydrogenation was compared with clay treatment and conventional post-hydrogenation.

关键词： Magnetically stabilized bed Amorphous alloy catalyst Hydrogenation

Synthesis and Crystal Structure of Co(DMSO)_2(H_2O)_2(SCN)_2 with One-dimensional Hydrogen-bonded Structure (DMSO = Dimethylsulfoxide)

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Chinese journal of Structural Chemistry 2006年第6期25卷 643-646页

作者： WEI Rong-min CHE Yun-Xia ZHENG ji-min Departmentof Biology Chemistry Tianjin Normal University Tianjin 300071 China

The title complex Co（DMSO）2（H2O）2（SCN）2 has been prepared and structurally characterized. It crystallizes in monoclinic, space group P21/n with a= 5.1981（9）, b = 11.944（2）, c = 12.646（2） A,β = 98.686（2）°, V = 776.2（2） A^3, C6H16CoN2O4S4, Mr = 367.38, Z = 2, De = 1.572 g/cm^3, F（000） = 378 and μ（Moka） = 1.646 mm^-1. The structure was refined to R= 0.0232 and wR = 0.0645 for 1241 observed reflections with I 〉 2σ（I）. In the title complex, each Co（II） atom is octahedrally coordinated by four O atoms from two DMSO ligands and two water molecules as well as two N atoms from SCN^- ions. The title molecules are connected to each other through intermolecular hydrogen bonds to form a 1-D structure extended by eight-membered Co2O4H2 rings.

关键词： dimethylsulfoxide thiocyanate group supramolecule,complex intermolecular hydrogen bond

A Fault Diagnosis Method of Power Systems Based on an Improved Adaptive Fuzzy Spiking Neural P Systems and PSO Algorithms

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Chinese journal of Electronics 2016年第2期25卷 320-327页

作者： WANG jun PENG Hong TU min Prez-jimnez j. Mario SHI Peng School of Electrical and Information Engineering Xihua University Neijiang Power Supply Company 5. Department of Computer Science and Artificial Intelligence University of Seville 6. School of Electrical and Electronic Engineeringthe University of Adelaide Sichuan Province key Laboratory of Power Electronics Energy-saving Technologies and Equipment Center for Radio Administration and Technology Development Xihua University

A new fault diagnosis method based on improved Adaptive fuzzy spiking neural P systems(in short,AFSN P systems) and Particle swarm optimization(PSO)algorithm is presented to improve the efficiency and accuracy of diagnosis for power systems in this paper. AFSN P systems are a novel kind of computing models with parallel computing and learning ability. Based on our previous works, this paper focuses on AFSN P systems inference algorithms and learning algorithms and builds the fault diagnosis model using improved AFSN P systems for diagnosing effectively. The process of diagnosis based on AFSN P systems is expressed by matrix successfully to improve the rate of diagnosis eminently. Furthermore, particle swarm optimization algorithm is introduced into the learning algorithm of AFSN P systems, thus the convergence speed of diagnosis has a big progress. An example of 4-node system is given to verify the effectiveness of this method. Compared with the existing methods, this method has faster diagnosis speed, higher accuracy and strong ability to adapt to the grid topology changes.

关键词： Fault diagnosis Power systems Member Computing AFSN P systems Particle swarm optimization algorithm