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Extrapolation reconstruction of wind pressure fields on the claddings of high-rise buildings

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Frontiers of Structural and Civil Engineering 2019年第3期13卷 653-666页

作者： Yehua SUN Guquan SONG hui lv School of Civil Engineering and Architecture Nanchang UniversityNanchang 330033China Jiangxi Institute of Economic Administrators Nanchang 330038China

Recent research about reconstruction methods mainly used the interpolation reconstruction of the fluctuating wind pressure field on the ***,to investigate wind pressure at the edge of the building,the work presented in this paper focuses on the extrapolation reconstruction of wind pressure ***,we propose an improved proper orthogonal decomposition(POD)and Kriging method with a von Karman correlation function to resolve this *** studies show that it works well for not only interpolation reconstruction but also extrapolation *** proposed method does require determination of the Hurst exponent and other parameters analysed from the original ***,the fluctuating wind fields have been characterized by the von Karman correlation function,as an a priori *** with the cubic spline method and different variogram,preliminary results suggest less time consumption and high efficiency in extrapolation reconstruction at the edge.

关键词： extrapolation reconstruction proper orthogonal decomposition Kriging method von Karman function Hurst exponent rescaled range analysis

Rhodium-Catalyzed Asymmetric Hydrogenation of Tetrasubstitutedα,β-Unsaturated Amides:Efficient Access to Chiralβ-Amino Amides

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Chinese Journal of Chemistry 2024年第21期42卷 2641-2646页

作者： Bing Jiao Fangyuan Wang hui lv State Key Laboratory of Power Grid Environmental Protection/Hubei Key Lab on Organic and Polymeric Optoelectronic Materials/Engineering Research Center of Organosilicon Compounds&Materials Ministry of Education/Key Laboratory of Biomedical Polymers of Ministry of Education&College of Chemistry and Molecular SciencesWuhan UniversityWuhanHubei430072 China

The first asymmetric hydrogenation of acyclic tetrasubstitutedα,β-unsaturated amides has been achieved by using Rh/DuanPhos complex as a catalyst,delivering chiralβ-amino amides with two contiguous chiral centers in excellent yields and high enantioselectivities(up to 99%yield,96%ee),which provides efficient and concise access to valuableβ-amino amide *** gram-scale reaction and efficient transformation ofβ-amino amide toβ-amino acid andβ-amino cyanide demonstrated the utility of this methodology.

关键词： Asymmetric hydrogenation β-Amino amides Asymmetric catalysis Contiguous chiral centers Rhodium Amines Reduction Enantioselectivity

Divergent synthesis of chiral amines via Ni-catalyzed chemo-and enantioselective hydrogenation of alkynone imines

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Science China Chemistry 2023年第11期66卷 3186-3192页

作者： Yuchuan Ma Kai Liu Lin He hui lv Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan School of Chemistry and Chemical EngineeringShihezi UniversityShihezi 832000China Hubei Key Lab on Organic and Polymeric Optoelectronic Materials Engineering Research Center of Organosilicon Compounds&MaterialsMinistry of EducationSauvage Center for Molecular SciencesKey Laboratory of Biomedical Polymers of Ministry of Education&College of Chemistry and Molecular SciencesWuhan UniversityWuhan 430072China

Ligand-mediated nickel-catalyzed asymmetric hydrogenation of alkynone imines has been achieved. By using Ni(OAc)_2·4H_2O/(S,S)-Ph-BPE complex as a catalyst, the chemo-and enantioselective hydrogenation of alkynone imines occurred efficiently to afford chiral propargyl amines with high yields and excellent enantioselectivities(up to 99% yield, >99% ee), leaving the readily reducible alkynyl group intact. Both the C=N and C≡C bonds of alkynone imines were hydrogenated efficiently in the presence of Ni(OAc)_2·4H_2O and Josiphos SL-J011-1, furnishing unfunctionalized chiral imines efficiently(up to 99% yield, >99% ee).The(Z)-allylamines and(E)-allylamines were also efficiently prepared from alkynone imines by the combination of the different catalytic systems. The preliminary mechanism study revealed that the reduction of alkynone imines was a stepwise process and the C=N bonds were preferably hydrogenated in the complete reduction of alkynone imines. The synthetic utility of this method was demonstrated by its application in the late-stage modification of the antiviral drug Zidovudine and the concise synthesis of chiral dibenzoazepine.

关键词： alkynone imine asymmetric hydrogenation propargyl amine enantioselectivity chiral amine

Numerical Comparison of the LOOCV-MFS and the MS-CTMfor 2D Equations

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Advances in Applied Mathematics and Mechanics 2018年第1期10卷 41-61页

作者： Fang Hao hui lv Xiaoyan Liu College of Mathematics Taiyuan University of TechnologyTaiyuanShanxi 030024China

The method of fundamental solutions(MFS)and the Collocation Trefftz method have been known as two highly effective boundary-type methods for solving homogeneous *** many attractive features of these two methods,they also experience different aspects of *** advances in the selection of source location of theMFS and the techniques in reducing the condition number of the Trefftz method have made significant improvement in the performance of these two methods which have been proven to be theoretically *** this paper we will compare the numerical performance of these two methods under various smoothness of the boundary and boundary conditions.

关键词： Trefftzmethod themethod of fundamental solution LOOCV multiple scalemethod non-harmonic boundary conditions

Effects of chronic renal failure on the expression of connexin 43 in the rat＇s corpus cavernosum

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Asian Journal of Andrology 2008年第2期10卷 286-289页

作者： Qiang Fu Jia-Jv lv hui Zhang Department of Urology Shandong Provincial Hospital Shandong University Jinan 250021 China

Aim： To explore the mechanism of chronic renal failure （CRF）-related erectile dysfunction （ED）. Methods： CRF experimental models were established by 5/6 nephrectomy from male Sprague-Dawley rats. Both the rats from the control group （NCRF group, n = 6） and the experimental group （CRF group, n = 30） were injected with a low dose （80 μg/g） of apomorphine in the 12th week after resection surgery to measure corresponding penile erections. Western blot method was thereafter conducted to measure the expression of connexin 43 （CX43） in the rat corpus cavernosum in the 12th week after the resection surgery. Results： There was one death in the NCRF group and five in the CRF group. The penile erection ratio of the CRF group was 28% （7/25）, whereas that of the NCRF group was 100% （5/5）, which presents a significant difference between the two groups （P 〈 0.05）. In terms of penile erection frequency, the average of the CRF group was 1.0 ± 0.0, which was significantly different from that of the NCRF group （2.2 ± 0.8）（P 〈 0.05）. As for the expression of CX43 in the rat corpus cavernosum, a notable difference existed between the CRF group （0.21 ± 0.07） and the NCRF group （0.53 ± 0.27）（P 〈 0.01）. Conclusion： CRF significantly reduces the erectile function of rats. A close correlation exists between the expression of CX43 in rats＇ corpus cavernosum and CRF-related ED. （Asian J Andro12008 Mar; 10： 286-289）

关键词： erectile dysfunction chronic renal failure connexin corpus cavemosum

A Tibetan Sentence Boundary Disambiguation Model Considering the Components on Information on Both Sides of Shad

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Tsinghua Science and Technology 2023年第6期28卷 1085-1100页

作者： Fenfang Li hui lv Yiming Gao Dolha Yan Li Qingguo Zhou School of Information Science and Engineering Lanzhou UniversityLanzhou 730000China Key Laboratory of China’s National Linguistic Information Technology Northwest Minzu UniversityLanzhou 730030China

Sentence Boundary Disambiguation(SBD)is a preprocessing step for natural language *** text into sentences is essential for Deep Learning(DL)and pretraining language *** punctuation marks may involve ambiguity about the sentences’beginnings and ***,the ambiguous punctuation marks must be distinguished,and the sentence structure must be correctly encoded in language *** study proposed a component-level Tibetan SBD approach based on the DL *** models can reduce the error amplification caused by word segmentation and part-of-speech *** most SBD methods have only considered text on the left side of punctuation marks,this study considers the text on both *** this study,465669 Tibetan sentences are adopted,and a Bidirectional Long Short-Term Memory(Bi-LSTM)model is used to perform *** experimental results show that the F1-score of the Bi-LSTM model reached 96%,the most efficient among the six *** are performed on low-resource languages such as Turkish and Romanian,and high-resource languages such as English and German,to verify the models’generalization.

关键词： Sentence Boundary Disambiguation(SBD) punctuation marks ambiguity Bidirectional Long Short-Term Memory(Bi-LSTM)model

Effective protective agents against the organ toxicity of T-2 toxin and corresponding detoxification mechanisms:A narrative review

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Animal Nutrition 2024年第1期16卷 251-266页

作者： Pengju Wang lv-hui Sun Xu Wang Qinghua Wu Aimei Liu Hubei Key Laboratory of Diabetes and Angiopathy Medicine Research InstituteXianning Medical CollegeHubei University of Science and TechnologyXianning 437100China Hubei Hongshan Laboratory College of Animal Science and TechnologyHuazhong Agricultural UniversityWuhan430070China National Reference Laboratory of Veterinary Drug Residues(HZAU)and MAO Key Laboratory for Detection of Veterinary Drug Residues Huazhong Agricultural UniversityWuhan430070China College of Life Science Yangtze UniversityJingzhou 434025China

T-2 toxin is one of the most widespread and toxic fungal toxins in food and *** can cause gastrointestinal toxicity,hepatotoxicity,immunotoxicity,reproductive toxicity,neurotoxicity,and nephrotoxicity in humans and animals.T-2 toxin is physicochemically stable and does not readily degrade during food and feed ***,suppressing T-2 toxin-induced organ toxicity through antidotes is an urgent *** agents against the organ toxicity of T-2 toxin have been recorded widely in the literature,but these protective agents and their molecular mechanisms of detoxification have not been comprehensively *** this review,we provide an overview of the various protective agents to T-2 toxin and the molecular mechanisms underlying the detoxification *** appropriate targets to antagonize T-2 toxin toxicity is also an important *** review will provide essential guidance and strategies for the better application and development of T-2 toxin antidotes specific for organ toxicity in the future.

关键词： T-2 toxin Organ toxicity Protective agent Detoxification mechanism

Variant of Guillain-Barrésyndrome with anti-sulfatide antibody positivity and spinal cord involvement:A case report

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World Journal of Clinical Cases 2023年第26期11卷 6274-6279页

作者： Hua Liu hui-Gang lv Rong Zhang Department of Neurology Yixing Hospital of Traditional Chinese MedicineYixing 214200Jiangsu ProvinceChina Department of Neurology The First People's Hospital of Shizuishan CityShizuishan 753200Ningxia Hui Autonomous RegionChina

BACKGROUND Guillain-Barrésyndrome(GBS)is an acute autoimmune-mediated *** have increasingly reported the presence of anti-sulfatide antibody positivity with varying clinical symptoms in patients with ***,spinal cord involvement is relatively rare in these *** SUMMARY A 68-year-old woman was admitted to the hospital with weakness of the limb for more than 3 *** symptoms included neck pain,progressive numbness in the distal extremities,urinary and fecal retention,and reduced perception of *** was diagnosed with an anti-sulfatide antibody-positive GBS variant and discharged after treatment with methylprednisolone and intravenous human immunoglobulin pulse *** common cases of anti-sulfatide antibody-positive GBS,this patient had atypical clinical symptoms of spinal cord *** similar cases have previously been reported in *** Although GBS is associated with a poor prognosis,a prompt diagnosis allows early administration of combined intravenous human immunoglobulin and methylprednisolone pulse therapy.

关键词： Guillain-Barrésyndrome spinal cord involvement anti-sulfatide antibodypositive Case report

Nickel-catalyzed asymmetric arylative cyclization of N-alkynones:Efficient access to 1,2,3,6-tetrahydropyridines with a tertiary alcohol

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Chinese Chemical Letters 2021年第12期32卷 4038-4040页

作者： Jiangyan Tian Wendian Li Ruihao Li Lin He hui lv key Laboratory of Biomedical Polymers of Ministry of Education&College of Chemistry and Molecular Sciences Engineering Research Center of Organosilicon Compounds&MaterialsMinistry of EducationSauvage Center for Molecular SciencesWuhan UniversityWuhan 430072China Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan School of Chemistry and Chemical EngineeringShihezi UniversityShihezi 832000China

Nickel/(S)-t-Bu-PHOX complex catalyzed asymmetric arylative cyclization of N-alkynones has been achieved, delivering 1,2,3,6-tetrahydropyridines containing a chiral tertiary alcohol in high yields and excellent enanti... 详细信息

关键词： Asymmetric catalysis Alkynones Cyclization Nickel