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What is Initial State of Scattering at Finite Temperature?

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Chinese Physics Letters 1999年第5期16卷 336-338页

作者： HOU De-fu zuo Jian LI Jia-rong Institute of Particle Physics Huazhong Normal UniversityWuhan 430079

This letter addresses a problem concerning temperature corrections to the scattering *** former studies had given the temperature-dependent phase space factors in the corrections,how to derive them from the first principles was not *** this letter,we consider this question within the formalism of thermal field *** find that if the initial and final states in scattering processes at finite temperature are constructed from the expanded vacuum states,the scattering rate in medium can be derived with the desired temperature-dependent phase space factors.

关键词： dynamics. letter correction

Immobilization of lead in anthropogenic contaminated soils using phosphates with/without oxalic acid

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Journal of Environmental Sciences 2015年第2期27卷 64-73页

作者： Xiaojuan Su Jun Zhu Qingling fu Jichao zuo Yonghong Liu Hongqing Hu Key Laboratory of Arable Land Conservation (Middle and Lower Reaches of Yangtze River) Ministry of Agriculture College of Resources and Environment Huazhong Agricultural University

Understanding the effects of oxalic acid（OA） on the immobilization of Pb（Ⅱ） in contaminated soils by phosphate materials, has considerable benefits for risk assessment and remediation strategies for the soil. A series of phosphate amendments with/without oxalic acid were applied to two anthropogenic contaminated soils. We investigated the immobilization of Pb（Ⅱ） by KH2PO4, phosphate rock（PR）, activated phosphate rock（APR） and synthetic hydroxyapatite（HAP） at different phosphate：Pb（P：Pb） molar ratios（0, 0.6, 2.0 and 4.0） in the presence/absence of 50 mmol oxalic acid/kg soil, respectively. The effects of treatments were evaluated using single extraction with deionized water or Ca Cl2, Community Bureau of Reference（BCR） sequential extraction and toxicity characteristic leaching procedure（TCLP）methods. Our results showed that the concentration of water extractable, exchangeable and TCLP-Pb all decreased with incubation time. The concentration of water-extractable Pb after120 days was reduced by 100% when soils were amended with APR, HAP and HAP ＋ OA, and the TCLP-Pb was 〈5 mg/L for the red soil at P：Pb molar ratio 4.0. Water-soluble Pb could not be detected and the TCLP-Pb was 〈5 mg/L at all treatments applied to the yellow-brown soil. BCR results indicated that APR was most effective, although a slight enhancement of water-soluble phosphate was detected at the P：Pb molar ratio 4.0 at the beginning of incubation. Oxalic acid activated phosphates, and so mixing insoluble phosphates with oxalic acid may be a useful strategy to improve their effectiveness in reducing Pb bioavailability.

关键词： Soil lead remediation Toxicity characteristics leaching procedure(TCLP) Phosphorous materials Oxalic acid Lead fraction

Antibacterial Activity of Polymeric Quaternary Ammonium Compounds Tuned by Incorporating Hydrophilic co-Monomer

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Chemical Research in Chinese Universities 2015年第1期31卷 160-166页

作者： zuo Huajiang WEN Wanhua WU dingcai fu Ruowen TANG Chunyi PCFM Laboratory School of Chemistry and Chemical Engineering Sun Yat-sen University Guangzhou 510275 P R. China College of Biological and Chemical Engineering Guangxi University of Science and Technology Liuzhou 545006 P. R. China

Copolymers of quaternary ammonium monomer（QAM） and hydrophilic co-monomer were successfully synthesized by free radical polymerization. It was discovered that the hydrophilic co-monomers with poor antibac- terial activity significantly enhanced the activity of QAM substituted with a long alkyl chain[i.e., N,N-dimethyl-N-dodecyl methacrylate ammonium bromide（DMAEMA-DB）]. When a suitable molar ratio of DMAEMA-DB to co-monomer was selected, the activity of the copolymers was up to 123 times that of the homopolymer of DMAEMA-DB against S. aureus, and 282 times that of it against E. colt. But unlike DMAEMA-DB, the co-monomers might weaken the activity of QAM substituted with a short alkyl chain[i.e., N,N-dimethyl-N-butyl methacrylate ammonium bromide（DMAEMA-BB）]. Moreover, it was found that copolymers of DMAEMA-DB were much more biocidal than those of DMAEMA-BB. Therefore, it could be speculated that the long alkyl chain plays an important role in the antibacterial activity, and that the hydrophilie co-monomers are beneficial to polymeric guaternary ammonium compounds（PQACs） to exert the positive effect of the long alkyl chain to the greatest degree.

关键词： Polymeric quaternary ammonium compound Antibacterial mechanism Copolymerization Hydrophobic/hydrophilic balance

600-MW_(e)high-temperature gas-cooled reactor nuclear power plant HTR-PM600

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Nuclear Science and Techniques 2022年第8期33卷 69-76页

作者： zuo-Yi Zhang Yu-Jie Dong Qi Shi fu Li Hai-Tao Wang Institute of Nuclear and New Energy Technology of Tsinghua University Collaborative Innovation Center of Advanced Nuclear Energy TechnologyThe Key Laboratory of Advanced Reactor Engineering and SafetyMinistry of EducationBeijing 100084China Chinergy Co.Ltd Beijing 100193China

The HTR-PM600 high-temperature gas-cooled reactor nuclear power plant is based on the technology of the high-temperature gas-cooled reactor pebble-bed module(HTR-PM)demonstration *** utilizes proven HTR-PM reactor and steam generator modules with a thermal power of 250 MW_(th)and power generation of approximately 100 MW_(e)per *** modules in parallel,connected to a steam turbine,form a 600-MW_(e)nuclear power *** addition,its system configuration in the nuclear island is identical to that of the HTR-PM in which the technical risks are *** this principle,the HTR-PM600 achieves the same level of inherent safety as the *** concept of a ventilated lowpressure containment(VLPC)is unchanged;however,a large circular VLPC accommodating all six reactor modules is adopted rather than the previous small-cavity-type VLPC,which contains only one module,as defined for the *** layout of the nuclear island and its associated systems refer to single-unit pressurized water reactor(PWR)*** this layout,the HTR-PM600achieves a volume size of the nuclear island that is comparable to a domestic PWR of the same power *** will be a GenerationⅣnuclear energy technology that is economically competitive.

关键词： High-temperature gas-cooled reactor Module HTR-PM600 GenerationⅣ

Role of Oncostatin M in the prognosis of inflammatory bowel disease: A meta-analysis

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World Journal of Gastrointestinal Surgery 2024年第1期16卷 228-238页

作者： Yue Yang Kan-zuo fu Gu Pan Department of Gastroenterology III Heilongjiang Provincial HospitalHarbin 150036Heilongjiang ProvinceChina Department of Nursing The Second Hospital of HarbinHarbin 150056Heilongjiang ProvinceChina

BACKGROUND Oncostatin M(OSM)is a pleiotropic cytokine which is implicated in the path-ogenesis of inflammatory bowel disease(IBD).AIM To evaluate the prognostic role of OSM in IBD *** Literature search was conducted in electronic databases(Google Scholar,Embase,PubMed,Science direct,Springer,and Wiley).Studies were selected if they reported prognostic information about OSM in IBD *** data were synthesized,and meta-analyses were performed to estimate standardized mean differences(SMDs)in OSM levels between treatment responders and non-res-ponders and to seek overall correlations of OSM with other inflammatory *** Sixteen studies(818 Crohn’s disease and 686 ulcerative colitis patients treated with anti-tumor necrosis factor-based therapies)were *** levels were associated with IBD severity.A meta-analysis found significantly higher OSM levels in non-responders than in responders to therapy[SMD 0.80(0.33,1.27);P=0.001],in non-remitters than in remitters[SMD 0.75(95%CI:0.35 to 1.16);Pdies but in general higher OSM levels were associated with poor *** had significant correlations with Simple Endoscopic Score of Crohn’s disease[r=0.47(95%CI:0.25 to 0.64);Pdidate for determining the severity of disease and predicting the outcomes of anti-tumor necrosis factor-based therapies in IBD patients.

关键词： Inflammatory bowel disease Crohn’s disease Ulcerative colitis Oncostatin M Prognosis

Protective effects of curcumin on retinal Müller cell in early diabetic rats

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International Journal of Ophthalmology(English edition) 2013年第4期6卷 422-424页

作者： Zhong-fu zuo Qiang Zhang Xue-Zheng Liu Department of Human Anatomy Liaoning Medical University

·AIM: To explore the effects and potential mechanisms of curcumin on retinal Müller cell in early diabetic rats. ·METHODS: diabetic rats were induced by a single intraperitoneal injection of streptozotocin (STZ). Male Sprague-Dawley (SD) rats were randomly assigned into 4 groups: control group (nave SD rats administered with a single intraperitoneal injection of citric buffer), diabetic group (STZ -diabetic rats), dimethyl sulfoxide (DMSO) group (diabetic rats intraperitoneally administered with mixture of DMSO and normal saline, once a day) and curcumin group (diabetic rats intraperitoneally administered with curcumin, 80mg/kg, once a day). Three months after diabetes onset, malondialdehyde (MDA, indication of oxidative stress level) and reduced glutathione (GSH) in retina were detected with kits, glial fibrillary acidic protein (GFAP) in retina was revealed by immunohistochemistry and Western blot, and retinal glutamine synthetase (GS) were observed by Western blot. ·RESULTS: Compared with control group, retinal MDA was increased, and GSH was decreased in diabetic and DMSO groups ( difference compared with control group ( >0.05). furthermore, upregulation of retinal GFAP and down-regulation of retinal GS were detected in diabetic and DMSO groups, and no alteration could be observed in curcumin group revealed with Western blot. Compared with control group, retinal Müller cells showed significant increase in GFAP immunochemistry staining in diabetic and DMSO groups. Moreover, GFAP -positive staining was decreased in curcumin group compared with diabetic group. · CONCLUSION: Curcumin inhibits diabetic retinal oxidative stress, protects Müller cell, and prevents the down -regulation of GS in diabetic retina. Therefore, curcumin has a therapeutic potential in the treatment of diabetic retinopathy (DR).

关键词： diabetic retinopathy curcumin oxidative stress Müller cell

Mathematical model for flood routing in Jingjiang River and Dongting Lake network

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Water Science and Engineering 2012年第3期5卷 259-268页

作者： zuo-tao XIE Fang-li YANG Xiao-li fu Changjiang Institute of Survey Planning Design and Research Wuhan 430010 P. R. China Changjiang Waterway Planning Design and Research Institute Wuhan 430010 P R. China State Key Laboratory of Water Resources and Hydropower Engineering Science Wuhan University Wuhan 430072 P. R. China

The main stream of the Yangtze River, Dongting Lake, and the river network in the Jingjiang reach of the Yangtze River constitute a complex water system. This paper develops a one-dimensional （l-D） mathematical model for flood routing in the river network Of the Jingjiang River and Dongting Lake using the explicit finite volume method. Based on observed data during the flood periods in 1996 and 1998, the model was calibrated and validated, and the results show that the model is effective and has high accuracy. In addition, the one-dimensional mathematical model for the river network and the horizontal two-dimensional （2-D） mathematical model for the Jingjiang flood diversion area were coupled to simulate the flood process in the Jingjiang River, Dongting Lake, and the Jingjiang flood diversion area. The calculated results of the coupled model are consistent with the practical processes. Meanwhile, the results show that the flood diversion has significant effects on the decrease of the peak water level at the Shashi and Chenjiawan hydrological stations near the flood diversion gates, and the effect is more obvious in the downstream than in the upstream.

关键词： Jingjiang River," Dongting Lake," Jing/iang flood diversion area," flood routing," rivernetworks 1-D and 2-D coupled model

Textures and Magnetic Properties of Grain Oriented ElectricalSteel Produced by Cross Shear Rolling

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Journal of Materials Science & Technology 1998年第2期14卷 167-170页

作者： Liu, Gang Qi, Kemin Sun, Jianlun zuo, Liang Liang, Zhide Wang, fu Northeastern Univ Sch Met & Mat Shenyang 110006 Peoples R China

Commercial grain oriented electrical steels were made by cross shear rolling (CSR) with a chosen mismatch speed ratio 1.1. Original sheets of 0.75 mm thick, which have been produced by conventional cold rolling and intermediate annealing, were rolled to thickness from 0.35 mm to 0.5 mm, and followed by industry annealing. The deformation texture and the magnetic properties were measured. Results indicate that: in the condition of the CSR, the deformation texture of rolled sheet is generally similar to that of conventional rolled sheet; for sheets with the thickness from 0.35 mm to 0.25 mm, favorable deformation textures, mainly consisting of left brace 111 right brace (112), are also found at subsurface layers, which may help to produce sharp Goss texture; and after the final annealing, the magnetic properties of sheets are not lower than that of conventional rolled sheets. (Edited author abstract) 11 Refs.

关键词： Steel

Electromagnetic wave absorption performance of Ti_(2)O_(3)and vacancy enhancement effective bandwidth

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Journal of Materials Science & Technology 2021年第17期76卷 166-173页

作者： Xiankai fu Bo Yang Wanqi Chen Zongbin Li Haile Yan Xiang Zhao Liang zuo Key Laboratory for Anisotropy and Texture of Materials(Ministry of Education) School of Material Science and Engineering.Northeastern UniversityShenyang110819China

The microwave absorption properties of Ti_(2)O_(3)were systematically *** results indicate that Ti_(2)O_(3)has microwave absorption performance with a minimum reflection loss value of-37.6 d B at 18.6 GHz and an effective absorption bandwidth(RLdipole state,leading to a wider effective absorption *** results have significance in understanding the origin of electromagnetic phenomena and developing electromagnetic wave absorption materials.

关键词： Ti_(2)O_(3) Microwave absorption Vacancy Electric dipoles First-principles