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粗苯加氢净化与萃取工艺的比较与选择

燃料与化工 2024年第1期55卷 51-54,57页

作者：葛龙龙苗露阳刘晨光王高峰胡敏敏济源市金源化工有限公司济源459000 河南金马中东能源有限公司济源459000

对粗苯加氢净化工艺、萃取工艺和萃取剂进行比较与选择。因为Litol加氢工艺产品单一、投资较高,气液两段催化加氢工艺能耗较高,所以选择两段气相催化加氢工艺。因为液相萃取工艺投资较大、操作维护困难,所以选择萃取蒸馏工艺。因为环丁... 详细信息

对粗苯加氢净化工艺、萃取工艺和萃取剂进行比较与选择。因为Litol加氢工艺产品单一、投资较高,气液两段催化加氢工艺能耗较高,所以选择两段气相催化加氢工艺。因为液相萃取工艺投资较大、操作维护困难,所以选择萃取蒸馏工艺。因为环丁砜萃取蒸馏效果较好、产品质量稳定,所以选用环丁砜作为萃取剂。

关键词：粗苯加氢萃取蒸馏方案选择

Establishment of a new acute-on-chronic liver failure model

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Acta Pharmaceutica Sinica B 2017年第3期7卷 326-333页

作者： Fangfang Li luyang miao Hua Sun Yuyang Zhang Xiuqi Bao Dan Zhang State Key Laboratory of Bioactive Substance and Function of Natural Medicines Institute of Materia MedicaChinese Academy of Medical Sciences & Peking Union Medical College Shenyang Pharmaceutical University

To establish an animal model of acute-on-chronic liver failure(ACLF) that would replicate the pathological process of ACLF in humans, rats were administered porcine serum(PS) for 11 weeks. Liver fibrosis was determined by pathological and biochemical assessments. The animals then were injected with D-galactosamine(D-gal) and lipopolysaccharide(LPS). The survival times of animals with cirrhosis and ACLF were determined over 48 h. Other animals were killed at 0, 4, 8 and 12 h after administration of D-gal/LPS. Liver injury was assessed by histopathological analysis and biochemical indices, and apoptosis was detected by Western blot and TUNEL analysis. After PS administration for 11 weeks the serum levels of hyaluronic acid and N-procollagen type III peptide increased significantly, and serious fibrosis and cirrhosis was observed at weeks 10 and 11. Cirrhotic rats were injected with D-gal/LPS to induced ACLF; the rate of mortality over 48 h was 80%. ALT and AST levels increased markedly at 4 h, but decreased significantly at8 and 12 h post-treatment. The total bilirubin, direct bilirubin, and total bile acids levels increased markedly at 8 and 12 h. Clotting times, TNF-α and IL-6 levels increased significantly, except for 12 h ***, inflammation and necrosis were elevated as determined by hematoxylin-eosin staining and TUNEL assays. BCL-2 levels decreased significantly, While BAX levels increased *** c expression peaked at 8 h postD-gal/LPS treatment. In conclusion, an ACLF model induced by PS and D-gal/LPS was established and the underlying mechanisms of ACLF development were explored.

关键词： ACLF D-Galactosamine Fibrosis Lipopolysaccharide Porcine serum Rat

Fabrication and Properties of Graphene Oxide/Sulfonated Polyethersulfone Layer-by-layer Assembled Polyester Fiber Composite Proton Exchange Membranes

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Chemical Research in Chinese Universities 2018年第2期34卷 318-325页

作者： HUANG Lihua HE Yao JIN Lying HOU Xiuwei miao luyang LU Changli First Hospital of Jilin University Changchun 130021 P. R. China College of Chemistry Northeast Normal University Changchun 130024 P. R. China Seeond Hospital of Jilin University Changchun 130021 P. R. China

Using the hydrogen-bonding interaction between graphene oxide（GO） and sulfonated polyethersulfone （SPES）, we constructed the multilayer structure of GO and SPES on the polyester tiber mats via layer-by-layer self-assembly. In each self-assembled layer, sulfonic acid groups are arranged along the a^s of fiber, which provides the long-range proton transmission channels, promoting the rapidly proton conduction. The performances of the composite membranes based on SPES and multilayer assembled polyester fiber mats were studied. The results show that the proton conductivity of composite membranes increases with the increasing assembly layers. At the same time, the mechanical properties and methanol-resistance of the composite membranes were obviously improved.

关键词： Composite proton exchange membrane Graphene oxide Sulfonated polyethersulfone Polyester fiber Layer-by-layer assembly Property"

pH Readout enhanced ELISA for point-of-care testing of cardiac troponin I

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Chinese Chemical Letters 2017年第9期28卷 1878-1880页

作者： luyang miao Lianhua Zhang Lei Jiao Xiaofeng Tan Qin Wei He Li School of Chemistry and Chemical Engineering University of Jinan Department of Urology Renji HospitalSchool of MedicineShanghai Jiao Tong University

Enzyme-linked immunosorbent assay（ELISA） as a conventional method for protein quantification has its characteristic properties,however,it is challenging to implement excellent portability and sensitivity at the same *** this study,we described a pH ELISA using synthetic melanin nanoparticles（SMNPs） for the co-immobilization of glucose oxidase（GOx） and second antibody（Ab_2） as signal labels,portable pH meter as signal readout device for point-of-care testing（POCT） of cardiac troponin I（cTnI）.In accordance with the varying amount of cTnI,following sandwich type immunoassay,proportional SMNPs-GOx-Ab_2 were immobilized specifically resulting in corresponding decrease of pH values owing to GOx loaded on SMNPs can high-efficiency convert glucose into gluconic *** assay is easy-to-use,portable,sensitive and able to realize POCT,affording a linear range from 0.5 pg/m L to 10 ng/m L and low limit of detection（LOD） of 0.15 pg/m L towards cTnI,which was demonstrated the significant promising in the early diagnosis and screening of acute myocardial infarction.

关键词： pH meter Synthetic melanin nanoparticles Polydopamine nanospheres Biomarker Immunosensor

Classification of spin Hall effect in two-dimensional systems

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Frontiers of physics 2024年第3期19卷 103-114页

作者： Longjun Xiang Fuming Xu luyang Wang Jian Wang College of Physics and Optoelectronic Engineering Shenzhen UniversityShenzhen 518060China Quantum Science Center of Guangdong-Hongkong-Macao Greater Bay Area(Guangdong) Shenzhen 518045China Department of Physics The University of Hong KongPokfulam RoadHong KongChina

Physical properties such as the conductivity are usually classified according to the symmetry of the underlying system using Neumann’s principle, which gives an upper bound for the number of independent components of the corresponding property tensor. However, for a given Hamiltonian, this global approach usually can not give a definite answer on whether a physical effect such as spin Hall effect (SHE) exists or not. It is found that the parity and types of spin-orbit interactions (SOIs) are good indicators that can further reduce the number of independent components of the spin Hall conductivity for a specific system. In terms of the parity as well as various Rashba-like and Dresselhaus-like SOIs, we propose a local approach to classify SHE in two-dimensional (2D) two-band models, where sufficient conditions for identifying the existence or absence of SHE in all 2D magnetic point groups are presented.

关键词： spin Hall effect symmetry two-dimensional system

Biomimetic synthesis of all-inclusive organic-inorganic nanospheres for enhanced electrochemical immunoassay

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Chinese Chemical Letters 2020年第5期31卷 1159-1161页

作者： Luyuan Tian Yuxiao Ma Ming Li Qiaorong Tang luyang miao Bing Geng He Li School of Chemistry and Chemical Engineering and Institute of Surface Analysis and Chemical Biology University of JinanJi'nan 250022China The Hospital of University of Jinan Ji'nan 250022China College of Optoelectronics Technology Chengdu University of Information TechnologyChengdu 610225China

A friendly biomimetic process was adopted for the mild preparation of"all-inclusive"organic-inorganic nanospheres,which effectively integrate biorecognition function and signal amplification *** resulted Ca3(PO4)2-Ab2-BSA nanospheres were employed as signal labels for enhancing detection of nuclear matrix protein 22(NMP 22).The fabricated electrochemical immunosensor exhibited a linear range(0.08-77.00 U/mL)and an ultralow limit of detection(0.01 U/mL)towards NMP 22,which can be taken as a promising tool for clinical diagnosis of bladder cancer.

关键词： Nuclear matrix protein 22 Biomimetic process Electrochemical immunosensor Limit of detection

Impact of sourdough fermentation on nutrient transformations in cereal-based foods:Mechanisms,practical applications,and health implications

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Grain & Oil Science and Technology 2024年第2期7卷 124-132页

作者： Zhen Wang luyang Wang State Key Laboratory of Crop Stress Adaptation and Improvement College of AgricultureHenan UniversityKaifeng 475004China

Sourdough is often considered a healthy choice and quality improver for use in cereal production due to its unique microbial composition and fermentation *** sourdough fermentation of cereals,biotransformation of nutrients occurs,resulting in notable changes to proteins,carbohydrates,fats,vitamins,and *** nutrient undergoes specific transformations,providing various advantages for human *** undergo hydrolysis to produce small molecular weight peptides and amino acids that are more easily digested and absorbed by the human *** break down to improve the digestibility and absorption of cereals and lower the glycemic *** acids experience oxidation to produce new substances with health ***,the application of sourdough fermentation can enhance the texture,flavor,and nutritional value of cereal foods while also extending their shelf life and improving food *** conclusion,sourdough fermentation has a broad range of applications in cereal food *** research is encouraged to investigate the mechanisms and processes of sourdough fermentation to develop even more nutritious,healthy,and flavorful cereal-based foods.

关键词： Sourdough fermentation Lactic acid bacteria Proteolysis Starch hydrolysis Low-GI Nutrients

Quick Hosting Capacity Evaluation Based on Distributed Dispatching for Smart Distribution Network Planning with Distributed Generation

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Journal of Modern Power Systems and Clean Energy 2024年第1期12卷 128-140页

作者： Bing Sun Ruipeng Jing Leijiao Ge Yuan Zeng Shimeng Dong luyang Hou the School of Electrical and Information Engineering Tianjin UniversityTianjin 300072China State Grid Corporation of China BeijingChina the School of Computer Science(National Pilot Software Engineering School) Beijing University of Posts and TelecommunicationsBeijingChina

The smart distribution network(SDN)is integrat ing increasing distributed generation(DG)and energy storage(ES).Hosting capacity evaluation is important for SDN plan ning with *** and ES are usually invested by users or a third party,and they may form friendly microgrids(MGs)and operate *** centralized dispatching meth od no longer suits for hosting capacity evaluation of SDN.A quick hosting capacity evaluation method based on distributed optimal dispatching is ***,a multi-objective DG hosting capacity evaluation model is established,and the host ing capacity for DG is determined by the optimal DG planning *** steady-state security region method is applied to speed up the solving process of the DG hosting capacity evalua tion ***,the optimal dispatching models are estab lished for MG and SDN respectively to realize the operating *** the distributed dispatching strategy,the dual-side optimal operation of SDN-MGs can be realized by several iterations of power exchange ***,an SDN with four MGs is conducted considering multiple flexible *** shows that the DG hosting capacity of SDN oversteps the sum of the maximum active power demand and the rated branch ***,the annual DG electricity oversteps the maximum active power demand value.

关键词： Smart distribution network(SDN) microgrid hosting capacity multi-objective optimization distributed opti mal dispatching flexible resource

Experimental and numerical study on ignition and combustion characteristics of boron-magnesium composite powders

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Particuology 2024年第1期84卷 12-29页

作者： Shuyuan Liu luyang Han Hongmei Liu Yingkai Song Linlin Liu Songqi Hu Science and Technology on Combustion Internal Flow and Thermo-Structure LaboratoryNorthwestern Polytechnical UniversityXi'an710072China School of Mechanical Engineering and Rail Transit Changzhou UniversityChangzhou213164China Shanghai Institute of Space Propulsion Shanghai201112China Shanghai Engineering Research Center of Space Engine Shanghai201112China

A high-pressure laser ignition and combustion system with adjustable oxidizer gas atmosphere is established to investigate the ignition and combustion characteristics of boron-magnesium(BM)com-posite *** ignition and combustion model of BM powders is established and validated in the present *** results show that increasing water content,O_(2) content and Mg content all result in shorter ignition delay time of BM powders,among which the effect of water content is the most ***,ignition delay time increases as pressure *** combustion time decreases with increasing Mg content and ambient pressure but increases with water *** the increase of O_(2) content,combustion time of BM powders first increases and then decreases,which means a critical O_(2) content exists above which combustion time *** results show that there exists a trade-off between ignition and combustion performance of BM composite powders.

关键词： Boron magnesium powder Laser ignition Ignition and combustion model Reaction mechanism Numerical model