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A heterotrophic nitrification-aerobic denitrification bacterium Halomonas venusta TJPU05 suitable for nitrogen removal from high-salinity wastewater

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Frontiers of Environmental Science & Engineering 2022年第6期16卷 13-22页

作者： Quanli man Peilian Zhang Weiqi huang Qing zhu Xiaoling He Dongsheng Wei State Key Laboratory of Separation Membrane and Membrane Process School of Environmental Science and EngineeringTiangong UniversityTianjin 300387China School of Chemistry Tiangong UniversityTianjin 300387China Key Laboratory of Molecular Microbiology and Technology Ministry of EducationCollege of Life ScienceNankai UniversityTianjin 300071China

A novel salt-tolerant heterotrophic nitrification and aerobic denitrification(HN-AD)bacterium was isolated and identified as Halomonas venusta TJPU05(*** TJPU05).The nitrogen removal performance of *** TJPU05 in simulated water(SW)with sole or mixed nitrogen sources and in actual wastewater(AW)with high concentration of salt and nitrogen was *** results showed that 86.12%of NH_(4)^(+)-N,95.68%of NO_(3)^(-)-N,100%of NO_(2)^(-)-N and 84.57%of total nitrogen(TN)could be removed from SW with sole nitrogen sources within 24 h at the *** TJPU05 could maximally remove 84.06%of NH_(4)^(+)-N,92.33%of NO_(3)^(-)-N,92.9%of NO_(2)^(-)-N and 77.73%of TN from SW with mixed nitrogen source when the salinity was above 8%.The application of *** TJPU05 in treating AW with high salt and high ammonia nitrogen led to removal efficiencies of 50.96%,47.28%and 43.19%for NH_(4)^(+)-N,NO_(3)^(-)-N and TN respectively without any ***,the activities of nitrogen removal–related enzymes of the strain were also *** successful detection of high level activities of ammonia oxygenase(AMO),hydroxylamine oxidase(HAO),nitrate reductase(NAR)and nitrite reductase(NIR)enzymes under high salinity condition further proved the HN-AD and salt-tolerance capacity of *** *** results demonstrated that the *** TJPU05 has great potential in treating high-salinity nitrogenous wastewater.

关键词： Salt-tolerant bacteria H.venusta TJPU05 Heterotrophic nitrification and aerobic denitrification High-salinity wastewater

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Specific Ion Effects on the Enzymatic Degradation of Polyester Films

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Chinese Journal of Polymer Science 2023年第4期41卷 476-482,I0005页

作者： Jian Zhang Jie zhu Zan hua Guang-Ming Liu Department of Chemical Physics Key Laboratory of Surface and Interface Chemistry and Energy Catalysis of Anhui Higher Education InstitutesUniversity of Science and Technology of ChinaHefei230026China Key Laboratory of Yarn Materials Forming and Composite Processing Technology of Zhejiang Province College of Material and Textile EngineeringJiaxing UniversityJiaxing314001China Biomass Molecular Engineering Center and Department of Materials Science and Engineering School of Forestry and Landscape ArchitectureAnhui Agricultural UniversityHefei230036China

Soil environment on earth contains a variety of ions,which are expected to play a vital role in the biodegradation of plastics discarded in the *** this work,poly(butyleneadipate-co-terephthalate)(PBAT)is employed as a model biodegradable plastic to study the specific ion effects on the enzymatic degradation of polyester *** results show that the specific ion effects on the enzymatic degradation rate of the PBAT films and on the catalytic rate constant for the enzymatic hydrolysis of the ester bonds are strongly dependent on temperature and ionic *** the enzymatic degradation rate and catalytic rate constant decrease following the trends Na^(+)>K^(+)>Ca^(2+)and Cl^(-)>SO_(4)^(2-)>NO_(3)^(-)for cations and anions,respectively,indicating that the ion-specific enzymatic degradation of the PBAT films is closely correlated with the specific ion effects on enzymatic hydrolysis of the ester *** study shows that the specific ion effects on the enzyme activity can be understood by taking into account the ion-specific cation-anion interaction,ionic dispersion force,salting-out effect and salting-in *** study of specific ion effects on the enzymatic hydrolysis of the ester bonds and the resultant enzymatic degradation of the PBAT films would offer us a new clue to develop new biodegradable,environmentally friendly synthetic plastics.

关键词： Specific ion effects Biodegradable films Ion-enzyme interactions Enzyme activity

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Evaluation of Tensile and Fatigue Properties of Metals Using Small Specimens

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Acta Metallurgica Sinica(English Letters) 2023年第1期36卷 147-157页

作者： Wen‑Ke Yang zhu‑man Song Xue‑Mei Luo Guang‑Ping Zhang Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China

Small specimens are increasingly being used in getting mechanical properties directly when there are limited materials to facilitate standard specimens,which play a great role in the rapid measurement of mechanical properties and residual life assessment of in-service reactor *** tensile and fatigue properties of the small specimens are investigated extensively,theoretical models for describing the mechanical properties of small specimens need to be ***,we conduct a systematic investigation of tensile and fatigue properties of pure Cu specimens with thicknesses ranging from 3 to 0.2 *** results show that the decrease in uniform elongation of the 0.2 mm-thick specimens is mainly due to the efects of grain boundary and free surface on the strain hardening rate.A modifed theoretical model correlated with the ratio of the surface grain layer thickness to the grain size is proposed to predict variation in yield strength of the small specimens more ***,the mechanism for the diference in fatigue life between the 0.2 mm-thick specimen and other thicker specimens is *** Basquin equation-based model is presented as a potential way to evaluate the fatigue life of metals using small specimens.

关键词： Size efect Small specimen Tensile property Fatigue life

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Energy and centrality dependence of light nuclei production in relativistic heavy-ion collisions

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Nuclear Science and Techniques 2022年第4期33卷 62-71页

作者： Li-Lin zhu Bo Wang Meng Wang hua Zheng Department of Physics Sichuan UniversityChengdu 610064China School of Physics and Information Technology Shaanxi Normal UniversityXi’an 710119China

We study the energy and centrality dependence of deuteron and triton(helium-3)production in relativistic heavy-ion collisions at the BNL Relativistic Heavy Ion Collider(RHIC)and CERN Large Hadron Collider(LHC)using the Tsallis distribution,blast-wave(BW)model,and stationary Fokker-Planck(FP)*** study shows that good agreement can be reached between the fitting results from the stationary FP solution and the experimental data for Au+Au collisions from the beam energy scan(BES)program of RHIC at√SNN=7.7,11.5,14.5,19.6,27,39,62.4,and 200 GeV and for Pb+Pb collisions at√SNN=2.76 *** Tsallis distribution and BW model can reasonably describe the deuteron and triton(helium-3)trans verse momentum spectra obtained at RHIC and LHC.A more comprehensive comparison among the three methods suggests that the stationary FP solution is a sensible method,which is able to describe the energy dependence of the light nuclei yield ratio N_(t)N_(p)/N_(d)^(2) and provide a coherent description of deuteron and triton(helium-3)production for all centralities and various colliding energies at RHIC and LHC.

关键词： Light nucleiproduction Heavy-ioncollisions Tsallis distribution Blast-wavemodel Fokker–Planck solution

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A review of nuclear magnetic resonance(NMR) technology applied in the characterization of polymer gels for petroleum reservoir conformance control

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Petroleum Science 2021年第6期18卷 1760-1775页

作者： Dao-Yi zhu Zhi-hua Deng Si-Wei Chen State Key Laboratory of Petroleum Resources and Prospecting and Petroleum School China University of Petroleum-Beijing at KaramayKaramay834000XinjiangChina

Polymer gel systems have been widely applied to control excessive water and improve oil recovery(IOR)in petroleum *** are usually divided into two main types,in-situ cross-linked polymer gels,and pre-formed polymer *** recent years,nuclear magnetic resonance(NMR) technology has been gradually applied to the research of polymer gel systems due to its unique analysis *** paper is intent to review these works *** in-situ cross-linked polymer gel systems,NMR can be used to characterize the chemical structure changes of the polymer,the cross-linker,and the auxiliary agent in the formulation of the polymer gel ***,the gelation time and the gel strength of the in-situ cross-linked polymer gel systems can also be measured by *** pre-formed polymer gels,NMR can be employed to detect the chemical structure of the designed ***,the NMR method can evaluate the plugging,water control,and oil improvement performance of the polymer gels in porous media without using *** review can help readers build a more systematic understanding of the application of NMR technology in polymer gel systems for IOR and help re searchers to more deeply study the performance of polymer gel systems.

关键词： Nuclear magnetic resonance Polymer gels Gelation time Gel strength Conformance control

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MiR-29b expression is altered in crescent formation of HSPN and accelerates AngⅡ-induced mesangial cell activation

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World Journal of Pediatrics 2020年第2期16卷 201-212页

作者： Shan Cheng Chun-hua zhu Ai-hua Zhang Song-Ming huang Department of Infectious Disease Children's Hospital of Nanjing Medical University72 Guangzhou RoadNanjing 210008China Department of Nephrology Children's Hospital of Nanjing Medical University72 Guangzhou RoadNanjing 210008China

Background MicroRNA-29b(miR-29b)has been suggested to possess pro-inflammatory activity,which can partially be explained by the repression of tumor necrosis factor alpha protein three antibody(TNFAIP3).Meanwhile,it also promotes thyroid cell proliferation via Smad signaling *** present study aimed to elucidate the role of miR-29b in Henoch Sch(o)nlein purpura nephritis(HSPN)and its underlying molecular mechanism in angiotensinⅡ(AngⅡ)-induced human glomerular mesangial cell(HGMC)*** We evaluated miR-29b expression in 35 HSPN renal tissues based on crescent formation,glomerular sclerosis,interstitial fibrosis,thrombosis formation and capillary loop ***,HGMCs were cultured,treated with AngⅡand then transfected with LV-hsa-miR-29b-1 to induce miR-29b overexpression or LV-hsa-miR-29b-3p-inhibition to inhibit miR-29b ***,we examined the effects of miR-29b on cell proliferation and release of inflammatory *** We observed that miR-29b expression was significantly higher in the crescent group than in the no crescent ***-29b overexpression induced the release of intercellular adhesion molecule-1,interleukin-1β(IL-1β),IL-6,IL-8,the increase of CyclinA2,CyclinD 1,and cell *** also could inhibit the expressions of TNFAIP3 and NF-kappa-B-repressing factor(NKRF).Correspondingly,miR-29b inhibition produced the opposite effects and increased the expression of TNFAIP3 and *** MiR-29b expression is altered in crescent formation of HSPN and accelerates AngⅡ-induced mesangial cell proliferation and release of inflammatory mediators.

关键词： Cell proliferation Crescent Inflammation MiR-29b

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Advances in the treatment of rhegmatogenous retinal detachment

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International Journal of Ophthalmology(English edition) 2019年第4期12卷 660-667页

作者： Li Liao Xiao-hua zhu Department of Ophthalmology the Second Xiangya Hospital Central South University

The pathogenesis of rhegmatogenous retinal detachment depends on three factors, namely, retinal rupture, vitreous liquefaction and traction causing the retina to separate from the pigment epithelium, among which retinal rupture is the most important. Retinopathy is caused by a gap between the neurosensory retina and the retinal pigment epithelium, which severely damages the visual function of the patient. Therefore, early clinical discovery, prevention and selection of an appropriate treatment are important. This article reviews progress in the treatment of retinal detachment.

关键词： rhegmatogenous retinal detachment treatment progress sclera external-route surgery retinal laser photocoagulation pars plana vitrectomy

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Effect of Primary Factor on Cavitation Resistance of Some Austenitic Metals

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Journal of Iron and Steel Research International 2003年第3期10卷 54-58页

作者： WANG Zai-you zhu Jin-hua Xi’an Jiaotong University

A new experimental method was developed to simulate the generation of the surface transversal crack on the continuous casting slab with a discontinuous sample. A high temperature property of steel named 'the sensitivity to the stress concentration of steel at high temperature' was defined to evaluate the effect of stress concentration on thermal plasticity of steel. 'The sensitivity parameter to the stress concentration of steel at high temperature' was available to determine the temperature range in which steel is sensitive to the stress concentration.

关键词： stress concentration continuous casting surface crack high temperature property

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Theoretical studies on the potential energy surfaces and vibrational energy levels of HXeF and HXeCl

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Science China Chemistry 2007年第1期50卷 7-10页

作者： huaNG ZhengGuo XIE DaiQian zhu hua Laboratory of Mesoscopic Chemistry Institute of Theoretical and Computational ChemistrySchool of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210093China Department of Chemistry Sichuan UniversityChengdu 610064China

The potential energy surfaces for the electronic ground state of the HXeCl and HXeF molecules are constructed by using the internally contracted multi-reference configuration interaction with the Davidson correction (icMRCl+Q) method and large basis sets. The stabilities and dissociation barriers are identified from the potential energy surfaces. The three-body dissociation channel is found to be the dominate dissociation channel for HXeCl, while two dissociation channels are possible and competitive for HXeF. Based on the obtained potentials, vibrational energy levels of HXeCl and HXeF are calculated using the Lanczos algorithm. Our theoretical results are in good agreement with the available observed values. Particularly, the calculated fundamental frequency of the H—Xe stretching vibration including the Xe matrix effect of HXeCl is found to be 1666.6 cm?1, which is only 17.6 cm?1 higher than the recently observed value of 1649 cm?1.

关键词： HXeF HXeCl vibrational energy level potential energy surface

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Continuous Quantum Nondemolition Measurements of a Particle in Electromagnetic and Gravitational Fields

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Communications in Theoretical Physics 2005年第3X期44卷 455-458页

作者： zhu Chun-hua ZHA Chao-Zheng Department of Physics Xinjiang University Wulumuqi 830046 China CCAST (World Laboratory) P.O. Box 8730 Beijing 100080 China

The detection of a particle in electromagnetic plus gravitational fields is investigated. We obtain a set of quantum nondemolition variables. The continuous measurements of these nondemolition parameters are analyzed in the framework of restricted path integral formalism. We manipulate the corresponding propagators, and deduce the probabilities associated with the possible measurement outputs.

关键词： continuous quantum nondemolition measurements restricted path integral

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