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Determination of Enantiomeric Compositions of Tryptophan by Chemometric Analysis of the Fluorescence Spectra of Bovine Serum Albumin Receptor-ligand Mixtures

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Chinese Chemical Letters 2006年第12期17卷 1599-1602页

作者： Yun xia WANG Fang zhang jing LIANG Hua LI Ji Lie KONG Department of Chemistry Fudan University Shanghai 200433 Department of Chemistry Northwest University Xi＇an 710069 Institute of Analytical Science Northwest University Xi＇an 710069

In this work, a novel method was constructed to determine the enantiomeric composition of tryptophan （Trp） by bovine serum albumin （BSA） based on the fluorescence spectra of the receptor-ligand mixtures coupled with partial least squares （PLS-1） analysis. As a result the enantiomeric composition of Trp was accurately determined.

关键词： Bovine serum albumin tryptophan PLS-1 fluorescence spectrophotometry.

Application of EPNSim Graph in Making Simulation Models for an Integrated Steelmaking-Casting-Rolling

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Journal of Iron and Steel Research International 2000年第1期7卷 22-26页

作者： zhang Cai-xia HE Cheng-hong HAN jing-tao HE Yu-xin University of Science and Technology Beijing

The EPNSim Graph was used to establish simulation models for an integrated steelmaking-casting-rolling production *** simulation software was developed on the basis of the EPNSim Graph models and some production plans... 详细信息

关键词： production plan simulation schedule EPNSim Graph

Effect of aflibercept combined with triamcinolone acetonide on aqueous humor growth factor and inflammatory mediators in diabetic macular edema

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International Journal of Ophthalmology(English edition) 2024年第2期17卷 297-303页

作者： De-Shuang Li Hong-xia Liao jing-Lin zhang Bo Qin Shenzhen Aier Eye Hospital Aier Eye HospitalJinan UniversityShenzhen 518031Guangdong ProvinceChina Guangzhou Aier Eye Hospital Jinan UniversityGuangzhou 510040Guangdong ProvinceChina

AIM:To investigate the efficacy of aflibercept combined with sub-tenon injection of triamcinolone acetonide(TA)in treating diabetic macular edema(DME)and to examine changes in growth factors and inflammatory mediator levels in aqueous humor after ***:Totally 67 DME patients(67 eyes)and 30 cataract patients(32 eyes)were enrolled as the DME group and the control group,*** DME group was divided into the aflibercept group(34 cases)and the aflibercept combined with TA group(combined group,33 cases).The aqueous humor of both groups was collected during the study *** aqueous levels of vascular endothelial growth factor(VEGF),monocyte chemoattractant protein-1(MCP-1),interleukin-6(IL-6),interleukin-8(IL-8),and interleukin-1β(IL-1β)were detected using a microsphere suspension array technology(Luminex 200TM).Aqueous cytokines,best-corrected visual acuity(BCVA),central macular thickness(CMT),and complications before and after treatment were compared between the aflibercept group and combined ***:The concentrations of VEGF,MCP-1,IL-6,and IL-8 in the aqueous humor were significantly higher in the DME group than those of the control group(all P0.05).CONCLUSION:The cytokines VEGF,MCP-1,IL-6,and IL-8 in the aqueous humor of DME patients are significantly *** and aflibercept combined with TA have good efficacy in DME patients,can effectively reduce CMT,improve the patient’s vision,and have high *** combined with TA can quickly downregulate the aqueous humor cytokines and help to relieve macular edema ***,the long-term eff

关键词： diabetic macular edema aqueous humor cytokines aflibercept triamcinolone acetonide

Review of the electrochemical performance and interfacial issues of high-nickel layered cathodes in inorganic all-solid-state batteries

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International Journal of Minerals,Metallurgy and Materials 2022年第5期29卷 1003-1018页

作者： jing Wang Shangqian Zhao Ling Tang Fujuan Han Yi zhang Yimian xia Lijun Wang Shigang Lu National Power Battery Innovation Center GRINM Group Corporation LimitedBeijing 100088China General Research Institute for Nonferrous Metals Beijing 100088China China Automotive Battery Research Institute Co. Ltd.Beijing 100088China Materials Genome Institute Shanghai UniversityShanghai 200444China

All-solid-state batteries potentially exhibit high specific energy and high safety,which is one of the development directions for nextgeneration lithium-ion *** compatibility of all-solid composite electrodes with high-nickel layered cathodes and inorganic solid electrolytes is one of the important problems to be *** addition,the interface and mechanical problems of high-nickel layered cathodes and inorganic solid electrolyte composite electrodes have not been thoroughly *** this paper,the possible interface and mechanical problems in the preparation of high-nickel layered cathodes and inorganic solid electrolytes and their interface reaction during charge–discharge and cycling are *** mechanical contact problems from phenomena to internal causes are also *** contact between the high-nickel cathode and solid electrolyte in space and the ionic conductivity of the solid electrolyte are the prerequisites for the good performance of a high-nickel layered *** interface reaction and contact loss between the high-nickel layered cathode and solid electrolyte in the composite electrode directly affect the passage of ions and electrons into the active *** buffer layer constructed on the high-nickel cathode surface can prevent direct contact between the active material and electrolyte and slow down their interface *** appropriate protective layer can also slow down the interface contact loss by reducing the volume change of the high-nickel layered cathode during charge and ***,the following recommendations are put forward to realize the development vision of high-nickel layered cathodes:(1)develop electrochemical systems for high-nickel layered cathodes and inorganic solid electrolytes;(2)elucidate the basic science of interface and electrode processes between high-nickel layered cathodes and inorganic solid electrolytes,clarify the mechanisms of the interfacial chemical and electrochemical r

关键词： all-solid-state lithium-ion battery high-nickel layered cathode inorganic solid-state electrolyte cathodes and electrolyte interface

Finiteness Conditions and Relative Singularity Categories

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Acta Mathematica Sinica,English Series 2022年第8期38卷 1436-1446页

作者： Chun xia zhang School of Mathematical Sciences Chongqing Normal UniversityChongqing 401331P.R.China

We introduce the n-pure projective(resp.,injective)dimension of complexes in n-pure derived categories,and give some criteria for computing these dimensions in terms of the n-pure projective(resp.,injective)resolutions(resp.,coresolutions)and n-pure derived *** a consequence,we get some equivalent characterizations for the finiteness of n-pure global dimension of ***,we study Verdier quotient of bounded n-pure derived category modulo the bounded homotopy category of n-pure projective modules,which is called an n-pure singularity category since it can reflect the finiteness of n-pure global dimension of rings.

关键词： n-pure projective dimension n-pure injective dimension n-pure global dimension n-pure derived category n-pure singularity category

Fabrication of Fe-doped Co-MOF with mesoporous structure for the optimization of supercapacitor performances

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Chinese Chemical Letters 2018年第6期29卷 834-836页

作者： Huanan Yu Huicong xia Jianan zhang jing He Shiyu Guo Qun Xu College of Materials Science and Engineering Zhengzhou University Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education) Nankai University

The synergy effect between different components has attracted widespread attentions because of improved activity, selectivity and stability than single component. In this paper, we fabricated mesoporous hybrid dual-metal Co and Fe containing metallic organic framework（Co/Fe-MOF）, Fe-MOF,and Co-MOF in the ionic liquid（IL）/supercritical CO2（SC）/surfactant emulsion system, and then studied the electrochemical properties of the three MOFs systematically. Experiment results indicate that, by taking advantages of coexistence of double metal, hybrid bi-metal Co/Fe-MOF exhibits the highest specific capacitance and the best cycling stability, with specific capacitance to 319.5 F/g at 1 A/g, 1.4 and 4 times for single Co-MOF and Fe-MOF, respectively.

关键词： Metallic organic framework Mesoporous structure Synergistic effect Hybrid dual-metal Supercapacitor

The population structure and sex ratios of Bursaphelenchus xylophilus under a-pinene stress

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Journal of Forestry Research 2020年第3期31卷 921-926页

作者： jing Cui Yong-xia Li Wei zhang Xuan Wang Long Pan Yu-Qian Feng Xing-Yao zhang Research Institute of Forestry New Technology Chinese Academy of ForestryBeijing 100091People’s Republic of China Co-Innovation Center for Sustainable Forestry in Southern China Nanjing Forestry UniversityNanjing 210037People’s Republic of China

Pine wood nematode(PWN), Bursaphelenchus xylophilus, is a serious pathogen of pines throughout the world. Previous work indicated that different concentrations of a-pinene could affect nematode reproduction,however the mechanism of that influence is not clear. In order to examine the reproductive strategies of PWN in response to the stress of the volatile material a-pinene, we investigated different aspects of population changes of *** under two concentrations of a-pinene. The results show that a high concentration(214.5 mg ml-1)promoted population growth while a low concentration(56.33 mg ml-1) decreased the population. Population structure was analyzed and it was found that a high concentration of a-pinene decreased the percentage of adults but increased the percentages of larvae and ***, from the results of an evaluation of sex ratios(female/male), it was determined that a high concentration could elevate sex ratios but a low concentration decreased ratios sharply. These results suggest that the PWN could regulate its population by changing sex ratios under stress of a-pinene. This study has provided a theoretical basis for the prevention and control of pine wilt disease caused by the pine wood nematode.

关键词： Pine wood nematode α-Pinene Population structure Sex ratios

Superwettable interface towards biodetection in confined space

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Nano Research 2024年第2期17卷 602-617页

作者： Zexu Pang Zhikang Cao Wanlu Li Wenxia Xu Yingying zhang Qitao Zhou jing Pan Fan xia State Key Laboratory of Biogeology and Environmental Geology Engineering Research Center of Nano-Geomaterials of the Ministry of EducationFaculty of Materials Science and ChemistryChina University of GeosciencesWuhan 430074China

The detection of biomarkers with both high sensitivity and specificity is crucial for the diagnosis and treatment of related ***,many current detections employ ex-situ detection method and non-confined condition,thus have many problems,which may eventually lead to inaccurate detection *** to detection in non-confined space,detection in confined space can better reflect the real in-vivo ***,the construction of detection for target molecules in confined space has great significance for both theoretical research and practical *** realize the detection of target molecules in confined space,the probes should accurately enter the confined space where the target molecules reside and interact with the ***,how to explore and utilize the properties of the interface(for example,bioinspired superwettability)has always been a hot and difficult topic in this ***,the recent advances and our efforts in recent 10 years on detection of bio-target molecules in confined space with superwettable interface have been introduced from the perspective of the detection *** suitable and most widely employed detection methods for target molecules in confined spaces are introduced ***,recent progresses for related detections based on visual,optical,and electrochemical detection methods are presented ***,the perspective for detection in confined space is discussed for the future development of biochemical detection.

关键词： biodetection superwettability confined space interface

Surface demineralized freeze-dried bone allograft followed by reimplantation in a failed mandibular dental implant

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Regenerative Biomaterials 2024年第1期3卷 82-93页

作者： jing zhang Jie Wang Jiayi You Xuan Qin Huimin Chen xiantong Hu Yantao Zhao Yang xia Jiangsu Key Laboratory of Oral Diseases Nanjing Medical UniversityNanjingJiangsu 210029PR China Jiangsu Province Engineering Research Center of Stomatological Translational Medicine Nanjing Medical UniversityNanjingJiangsu 210029PR China Department of Restorative Dental Sciences Faculty of DentistryThe University of Hong KongHong Kong SARPR China Senior Department of Orthopedics The Fourth Medical Center of PLA General HospitalBeijing100048PR China Beijing Engineering Research Center of Orthopedics Implants Beijing 100048PR China State Key Laboratory of Military Stomatology Xi'an 710032PR China

The removal of a failed implant with high torque causes significant damage to the surrounding tissue,compromising bone regeneration and subsequent osseointegration in the defect ***,we report a case of carrier screw fracture followed by immediate implant removal,bone grafting and delayed reimplantation.A dental implant with a fractured central carrier screw was removed using the bur-forceps *** resulting three-wall bone defect was filled with granular surface demineralized freeze-dried bone allograft(SD-FDBA).Cone-beam computerized tomography was performed at 1week,6months and 15months postoperatively and standardized for quantitative *** alveolar bone width and height at 15months post-surgery were about 91%of the original values,with a slightly lower bone density,calculated using the gray value *** graft site was reopened and was found to be completely healed with dense and vascularized bone along with some residual bone *** followed by restoration was performed 8months *** quality of regenerated bone following SD-FDBA grafting was adequate for osseointegration and longterm implant *** excellent osteogenic properties of SD-FDBA are attributed to its human origin,cortical bone-like structure,partly demineralized surfaces and bone morphogenetic protein-2-containing *** investigation with more cases and longer follow-up was required to confirm the final clinical effect.

关键词： dental implant implant failure allogeneic bone bone regeneration reimplantation