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THEORETICALLY AND NUMERICALLY ASSESSING THE VALIDITY OF EULERIAN TRUNCATION IN STOCHASTIC GROUNDWATER MODELING

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Journal of Hydrodynamics 2002年第3期14卷 13-20页

作者： Liao, Hua-Sheng Li, shu-guang Hydraulics Lab.of High Speed Flows Sichuan Univ. Chengdu 610065 China Dept. of Civil and Environ. Eng. Michigan State Univ. East Lansing MI 48824 United States

A theoretical and numerical assessment of the validity of Eulerian truncation in stochastic modeling is presented. Specifically, we analyze and compare theoretically various existing Eulerian-based first-order techniques with and without invoking Eulerian truncation and quantify the terms truncated and retained in the stochastic perturbation equations using high resolution Monte Carlo simulations. We also analyze and compare numerically various existing Eulerian-based first-order techniques and Monte Carlo simulation. The obtained results have demonstrated theoretically and numerically that existing Eulerian-based stochastic perturbation techniques are equivalent. The terms truncated are indeed one order higher than those retained. Therefore, we conclude that Eulerian truncation is mathematically consistent and asymptotic.

关键词： Computer simulation Monte Carlo methods Perturbation techniques Random processes Stochastic programming

New Feedback Control Model in the Lattice Hydrodynamic Model Considering the Historic Optimal Velocity Difference Effect

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Communications in Theoretical Physics 2018年第12期69卷 803-807页

作者： guang-Han Peng shu-Hong yang Hong-Zhuan Zhao College of Physics and Electronics Hunan University of Arts and Science College of Physical Science and Technology Guangxi Normal University School of Computer Science and Communication Engineering Guangxi University of Science and Technology College of Architecture and Transportation Engineering Guilin University of Electronic Technology

A feedback control model of lattice hydrodynamic model is proposed by taking the information of the historic optimal velocity into account for the traffic system. The modern control theory is applied for the linear stability condition with feedback control signal. The result shows that the stability of traffic flow is closely related to the information of the historic optimal velocity. Furthermore, numerical simulations conform that the new feedback control did increase the stability of traffic flow efficiently, which is in accord with theoretical analysis.

关键词： traffic flow lattice hydrodynamic model control method traffic jam

Activation Effect of Cathartic Natural Compound Rhein to CFTR Chloride Channel

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Chemical Research in Chinese Universities 2006年第3期22卷 312-314页

作者： SHI Lin-lin XU Li-na HOU shu-guang LIN Sen yang Hong MA Tong-hui Membrane Channel Research Laboratory Northeast Normal University Changchun 130024 P. R. China Faculty o Life Sciences Liaoning Normal University Dalian 116029 P. R. China China-Japan Union Hospital Jilin University Changchun 130033 P. R. China

The cystic fibrosis transmembrane conductance regulator （CFFR） is a cAMP-activated chloride channel expressed in intestinal exoerine glands, which plays a key role in intestinal fluid secretion. A natural anthraquinone ac tivator of CFTR Cl^- channel, rhein, was identified by screening 217 single compounds from Chinese herbs via a cellbased halide-sensitive fluorescent assay. Rhein activates CFTR Cl^- transportation in a dose-dependent manner in the presence of cAMP with a physiological concentration. This study provides a novel molecular pharmacological mechanism for the laxative drugs in Treditional Chinese Medicine such as aloe, cascara and senna.

关键词： CFTR chloride channel Anthraquinone Laxative drug

Wigner Distribution Function and Husimi Function of a Kind of Squeezed Coherent State

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Communications in Theoretical Physics 2007年第3期47卷 427-430页

作者： FAN Hong-Yi LIU shu-guang Department of Materials Science and Engineering University of Science and Technology of China Hefei 230026 China

We find a new x-parameter squeezed coherent state （p, q）κ representation, which possesses well-behaved features, i.e., its Wigner function＇s marginal distribution in the ＂q-direction＂ and in the ＂p-direction＂ is the Gauss/an form exp（-κ（q＇ - q）2}, and exp{（p＇ - p）2/κ}, respectively. Based on this, the Husimi function of（p, q）κ is also obtained, which is a Gauss/an broaden version of the Wigner function. The （P, q）κ state provides a good representative space for studying various properties ot the Husimi operator.

关键词： Wigner function Husimi function squeezed coherent state IWOP technique

A novel mouse model simulating transurethral laser vaporization prostatectomy

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Asian Journal of Andrology 2022年第2期24卷 191-194页

作者： Heng Zhang Ye Tian Bing yang Ling-Yue An shu-Jie Xia guang-Heng Luo Medical School of Guizhou University Guiyang 550000China Department of Urology Surgery Guizhou Province People’s HospitalGuiyang 550002China School of Clinical Medicine Guizhou Medical UniversityGuiyang 55025China School of Clinical Medicine Guangzhou Medical UniversityGuangzhou 510180China Department of Urology Shanghai First People’s HospitalShanghai Jiao Tong UniversityShanghai 201620China

Benign prostatic hyperplasia(BPH)is a common disease in elderly men,and transurethral laser prostatectomy(TULP)has been widely used in the clinic to remove bladder outlet obstruction caused by *** animal models for wound repair after prostatectomy have many limitations,and there have been no previous reports of a mouse model of ***,this study aimed to establish a novel mouse model of *** healthy adult Kunming(KM)mice received transurethral laser vaporization prostatectomy with a 200-μm thulium *** mice were sacrificed,and wound specimens from the prostatic urethra and bladder neck were harvested at 1 day,3 days,5 days,and 7 days after ***-eosin(HE)and immunohistochemistry were applied to confirm the establishment of the mouse TULP *** day after the surgery,urothelium expressing uroplakin(UPK)was absent in the urethral wound site,and a large number of necrotic tissues were found in the wound *** was no UPK-positive urothelium in the wound 3 days after *** 5 days after surgery,monolayer urothelium expressing UPK was found in the wound site,indicating that the re-epithelization of the wound had been *** the 7th day after surgery,there were multiple layers of urothelium with UPK expression,indicating that the repair was *** is feasible to establish a mouse TULP model by using a microcystoscope system and a 200-μm thulium laser.

关键词： animal model benign prostatic hyperplasia transurethral resection of the prostate

Development of a Synthetic Peptide ELISA Assay for the Detection of Foot-and-Mouth Disease Virus Nonstructural Protein Antibodies

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Agricultural Sciences in China 2010年第11期9卷 1677-1683页

作者： yang Ji-fei yang Su-zhen yang Yan-yan ZHI Ai-min ZHAO Dong ZHI Yu-bao XING guang-xu DENG Rui-guang CHAI shu-jun ZHANG Gai-ping Henan Provincial Key Laboratory for Animal Immunology Henan Academy of Agricultural Sciences Zhengzhou 450002 P.R.China College of Veterinary Medicine Henan Agricultural University Zhengzhou 450002 P.R.China

In order to develop an ELISA assay with synthetic peptides for the detection of antibody to the nonstructural proteins of foot-and-mouth disease virus, specific peptides were synthesized by a solid-phase method according to FMDV NSPs B-cell epitopes, and were conjugated to carrier protein BSA. An ELISA system was developed to detect FMDV NSPs antibody with the conjugated proteins as the coating antigen. The optimal coating concentration of the antigen was determined as 2.5 μg mL-1. The comparative study of this assay with UBI NSP ELISA kit and national commercial 3ABC ELISA kit in the detection of 199 serum samples showed that they were very coincident, and the identity rates were 96.48 and 97.48%, respectively. The development of ELISA using the synthetic peptides as coating antigen is specific, reproducible, stable, and easy, and can be used to differentiate FMDV infected pigs from immunized pigs.

关键词： foot and mouth disease virus (FMDV) ELISA synthetic peptide

Theoretical Study on the Dehydrogenation Reaction of H_2S by VS^+ (~3Σ^-)

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Chinese Journal of Structural Chemistry 2005年第10期24卷 1111-1116页

作者： GAO shu-Lin LIU Zheng-Mei XIE Xiao-guang Department of Chemistry Yunnan University Kunming 650091 China School of Physics and Chemistry Guizhou Normal University Guiyang 550001 China

The dehydrogenation reaction of H2S by the ^3Σ^- ground state of VS^＋： VS^＋＋ H2S → VS2^＋＋ H2 has been studied by using Density Functional Theory （DPT） at the B3LYP/DZVP level. It is found that the reaction proceeds along two possible pathways （A and B） yielding two isomer dehydrogenation products VS2^＋-1 （^3B2） and VS2^＋-2 （^3A1）, respectively. For both pathways, the reaction has a two-step-reaction mechanism that involves the migration of two hydrogen atoms from S2 to V^＋, respectively. The migration of the second hydrogen via TS3 and that of the first via TS4 are the rate-determining steps for pathways A and B, respectively. The activation energy is 17.4 kcal/mol for pathway A and 22.8 kcal/mol for pathway B relative to the reactants. The calculated reaction heat of 9.9 kcal/mol indicates the endothermicity of pathway A and that of -11.9 kcal/mol suggests the exothermicity of pathway B.

关键词： density functional theory cationic transition metal sulfide,dehydrogenation reaction reaction mechanism

Online algorithms for scheduling with machine activation cost on two uniform machines

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2007年第1期8卷 127-133页

作者： HAN shu-guang JIANG Yi-wei HU Jue-liang Department of Mathematics Zhejiang University Hangzhou 310027 China Faculty of Science Zhej iang Sci- Tech University Hangzhou 310018 China

In this paper we investigate a variant of the scheduling problem on two uniform machines with speeds 1 and s. For this problem, we are given two potential uniform machines to process a sequence of independent jobs. Machines need to be activated before starting to process, and each machine activated incurs a fixed machine activation cost. No machines are initially activated, and when a job is revealed, the algorithm has the option to activate new machines. The objective is to minimize the sum of the makespan and the machine activation cost. We design optimal online algorithms with competitive ratio of (2s+1)/(s+1) for every s≥1.

关键词： Online algorithm Competitive analysis Uniform machine scheduling Machine activation cost

Collagenous nodule mixed simple cyst and hemangioma coexistence in the liver

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World Journal of Gastroenterology 2015年第14期21卷 4419-4422页

作者： Zhen-Jiang Zheng shu Zhang yang Cao guang-Chun Pu Hong Liu Department of General Surgery The Third People’s Hospital of Chengdu The Second Affiliated Hospital of Chengdu Chongqing Medical University Department of Radiology The Third People’s Hospital of Chengdu

A 20-year-old female patient presented with two masses located in the left *** this patient, a computed tomography(CT) scan revealed a hypodense mass and a second well-defined mass with a calcified nodule in the left hepatic *** enhancements were apparent in or around the masses.A laparotomy was performed due to the patient's symptoms, namely, the atypical CT findings and a risk of rupture of the subcapsular *** operation revealed two masses in the left hepatic lobe and a left liver resection was subsequently *** of the masses involved segment Ⅲ and the other mass was located in segment Ⅳ.The histopathologic findings supported a diagnosis of collagenous nodule mixed simple cyst and hemangioma.A diagnosis of collagenous nodule mixed simple hepatic cyst is extremely rare and radiologically mimics a teratoma, hepatolithiasis, parasitic cyst, or *** hepatic hemangiomas are the most common benign tumors found in the liver, the present case showed atypical radiographic features.

关键词： Collagenous nodule Hepatic hemangioma Liver Mass S