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Yi-Qi-zeng-min-Tang,a Chinese medicine,ameliorates insulin resistance in type 2 diabetic rats

World Journal of Gastroenterology 2011年第8期17卷 987-995页

作者： zeng Zhang Hong-Li Xue Yi Liu Wen-Jian Wang Institute of Chinese Integrative Medicine Huashan Hospital Fudan University Shanghai 200040 China Institute of Chinese Integrative Medicine Huashan Hospital Fudan University Shanghai 200040 China Institute of Integrated Clinical Medicine Shanghai Academy of Traditional Chinese Medicine YueyangIntegrative Medicine Hospital Shanghai Traditional ChineseMedicine University Shanghai 200437 China

AIM:To investigate the effects of the Chinese herbal decoction,Yi-Qi-zeng-min-Tang(YQZMT),on insulin resistance in type 2 diabetic ***:Sprague-Dawley rats were divided into two dietary regiments by feeding either normal pellet diet(NPD) or high fat diet(HFD).Four weeks later,the HFD-fed rats were injected intraperitoneally with lowdose streptozotocin(STZ).Rats with non-fasting blood glucose level ≥ 16.67 mmol/L were considered type 2 diabetic and further divided into five subgroups:the type 2 diabetes model group,low-dose,medium-doseand high-dose YQZMT groups,and rosiglitazone ***-matched NPD-fed rats served as *** or rosiglitazone were administered for 8 *** glucose and insulin tolerance tests were performed before and after the treatment to measure the glucose tolerance and insulin *** levels of biochemical parameters,adipocytokines,such as tumor necrosis factor-α(TNF-α),interleukin-6(IL-6),as well as free fatty acids(FFAs),were also ***:There was significant elevation of insulin resistance and serum levels of fasting glucose(12.82 ± 1.08 mmol/L vs 3.60 ± 0.31 mmol/L,P < 0.01),insulin(7197.36 ± 253.89 pg/mL vs 4820.49 ± 326.89 pg/mL,P < 0.01),total cholesterol(TC)(8.40 ± 0.49 mmol/L vs 2.14 ± 0.06 mmol/L,P < 0.01),triglyceride(2.24 ± 0.12 mmol/L vs 0.78 ± 0.05 mmol/L,P < 0.01),low-density lipoprotein cholesterol(LDL-c)(7.84 ± 0.51 mmol/L vs 0.72 ± 0.04 mmol/L,P < 0.01) and decrease in high-density lipoprotein cholesterol(HDL-c)(0.57 ± 0.03 mmol/L vs 1.27 ± 0.03 mmol/L,P < 0.01) in the low-dose STZ and high-fat diet induced type 2 diabetic group when compared with the control *** of YQZMT induced dose-and timedependent changes in insulin resistance,glucose and lipid profile,and reduced levels of FFA,TNF-α and IL-6 in the type 2 diabetic *** the treatment,compared with the diabetic group,the insulin resistance was ameliorated in the high-dose YQZMT(2.82 g/100 g per day) group

关键词： Yi-Qi-zeng-min-Tang Insulin resistance Type 2 diabetes Lipids Adipocytokines Free fatty acids

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Physarum polycephalum-inspired adaptive optimization design of artificial microtubular networks

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Science China Chemistry 2025年

作者： Si-min zeng Di-Wei Zheng Ting Pan Xing-Lan Ding Yun Zhang Chi-Hui Yang Si-Xue Cheng Xian-Zheng Zhang Key Laboratory of Biomedical Polymers of ministry of Education&Department of Chemistry Wuhan University

Natural biological microtubular networks have undergone adaptive evolutionary selection and may offer viable solutions to design challenges in artificial microtubular networks. The plasmodium of the slime mold Physarum polycephalum(P. polycephalum) extends continuously to form a protoplasmic microtubular network structure, directly connecting food *** simulations revealed that the formation of this adaptive P. polycephalum microtubular network could be captured by a mathematical algorithm. Inspired by the P. polycephalum microtubular networks, we propose an adaptive optimization design method for artificial microtubular networks. Specifically, we utilized hydrogels with biodegradable and tissue-adhesive properties to replicate the P. polycephalum microtubular networks via photomask. In Rhodamine B diffusion and glucosecatalyzed reaction experiments, we found that the P. polycephalum microtubular networks exhibited significantly enhanced efficiency compared to vascular and artificial networks. Furthermore, we demonstrated the potential for uric acid(UA) degradation of the hydrogels with a real P. polycephalum microtubular network loaded with urate oxidase(UOx) in a rodent model of hyperuricemia. And this network achieved more than double the effect of the artificial network. This underscores the potential of natural microtubular networks to replace artificial microtubular networks.

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Molecular Entanglement Analysis Based on the Damping Behavior of Polycarbona te/Epoxy Resin Semi-Interpenetrating Polymer Network

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Chinese Physics Letters 1996年第2期13卷 157-160页

作者： RONG min-zhi zeng Hau-min Materials Science Institute Zhongshan UniversityGuangzhou 510275

The characteristics of entanglement structure in polycarbonate/opoxy semi-interpenetrating polymer network at moleculur level have been investigated by dynamic mechanical *** is found that the relaxation of entanglement,chains is a kind of synergetic relaxation,whicli will induce additive internal friction mid decrease the apparent activation energy and *** loss areas can represent the degree of interpenetration between the different segments at njolecular level.

关键词： relaxation additive chains

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Micro-arc Oxidation Inverter Power Supply Based on the Limited Bipolar Soft-switch Control Method

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Chinese Journal of Mechanical Engineering 2009年第3期22卷 390-394页

作者： zeng min CHEN Xiaohong CAO Biao School of Mechanical and Automotive Engineering South China University of Technology Guangzhou 510640 China

In order to overcome many limitations of the conventional power supplies, such as ponderosity, big wastage, and simplex output characteristic, a dual-inverter power supply is designed to meet the different requirements of micro-arc oxidation. The main circuit structure and principle of the dual-inverter power supply for micro-arc oxidation is described, the control system and the control adjustment method are also introduced. The dual-inverter technology is adopted in micro-arc oxidation power supply. The limited bipolar control mode is applied in the power inverter circuit for adjusting the voltage, and various voltage waveform can be obtained by controlling the chopper circuit. Meanwhile, the control accuracy and response speed are improved greatly because of the higher inverter frequency. The power supply can output direct current（DC） waveform, DC pulse waveform, symmetry alternating current（AC） waveform, asymmetry AC waveform, and so on. Besides, the parameters such as pulse width, range, frequency, duty cycle can be adjusted. The experimental result shows that the power supply has many advantages, such as stable output, wonderful waveform consistency and obvious advantage in technique, and it can meet the requirements of micro-arc oxidation process fully.

关键词： micro-arc oxidation power supply inverter chopper limited bipolar

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Studies on the Surface Interaction and Dispersity of Silver Nanoparticles in Organic Solvents

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Chinese Physics Letters 2000年第9期17卷 697-699页

作者： zeng Rong RONG min-Zhi ZHANG ming-qiu zeng Han-min Institute of Materials Science Key Laboratory of Polymeric Composite&FYinctional Materials of the Ministry of Education of ChinaZhongshan UniversityGuangzhou 510275

Silver nanoparticles with different sizes have been prepared by microemulsion and have been surface-modified with *** spin resonance results indicate that there exist some kinds of surface local paramagnetic sites in capped Ag nanoparticles,which leads to the relation between electron spin resonance parameters and particle size deviating from Kawabata's *** a strong interaction between nanosilver and *** smaller the particles,the stronger the *** electron microscopy and ultravilolet-visible absorption spectra confirmed that Ag nanoparticles are well dispersed in chloroform,implying that a good dispersity of Ag nanoparticles in polymers could be obtained by means of solution mixing by using chloroform as the solvent.

关键词： interaction. chloroform silver

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Self-assembled supramolecular networks at interfaces: Molecular immobilization and recognition using nanoporous templates

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Science China(Physics,Mechanics & Astronomy) 2011年第10期54卷 1739-1748页

作者： LI min zeng QingDao WANG Chen National Center for Nanoscience and Technology (NCNST) Beijing 100190 China

In this review a series of organic-based open porous networks are discussed, in which hydrogen bonds play an important role in network formation. Using these open networks as molecular templates: 1) a wealth of functional guest species can be immo- bilized; 2) fullerene molecules can be separated and recognized; 3) photoisomerization reactions can be observed by STM; 4) 1D molecular arrays can be constructed; and 5) heterogeneous bilayer structures can be formed. It is envisioned that these su- pramolecular networks might be developed into a new family of useful soft frameworks for studies toward shape-selective ca- talysis, molecular recognition and host-guest supramolecular chemistry.

关键词： supramolecular networks molecular recognition scanning tunneling microscopy self-assembly

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Influence of laterite nickel ore on extracting iron from Bayer red mud by carbothermal smelting reduction

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Journal of Iron and Steel Research International 2021年第6期28卷 661-668页

作者： Ao-ping He Jian-min zeng Shi-hong Liu Guangxi Key Laboratory of Processing for Non-Ferrous Metal and Featured Materials Guangxi UniversityNanning 530004GuangxiChina

In view of the difficulty of extracting iron from Bayer red mud,a new idea of adding laterite nickel ore into red mud was proposed to prepare a high value-added *** this,the influences of laterite nickel ore on thermodynamic reaction,slagging and smelting reduction of extracting iron from red mud were *** results indicated that the product of extracting iron from red mud(R100)was changed with the addition of laterite nickel ore(R70L30).The slag of R100 was strongly basic,while the R70L30 was weakly acidic with composition closer to the ideal blast furnace *** metal recovery of R100 was 75.16%and that of R70L30 was 94.05%.At the same temperature,the slag viscosity of R70L30 was significantly lower than that of R100,which proved that laterite nickel ore can adjust the basicity,reduce melting point of slag and improve metal *** Fe,Ni and Cr in red mud and laterite nickel ore can be reduced sufficiently,a low Ni–Cr alloy cast iron can be directly prepared.

关键词： Bayer red mud Laterite nickel ore Iron extraction Slagging Carbothermal smelting reduction

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Arsenic removal from contaminated soil using phosphoric acid and phosphate

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Journal of Environmental Sciences 2008年第1期20卷 75-79页

作者： zeng min LIAO Bohan LEI ming ZHANG Yong zeng Qingru OUYANG Bin College of Resources and Environment Central South University of Forestry and Technology Changsha 410004 China. College of Biological Science and Technology Hunan Agricultural University Changsha 410128 China International College Central South University of Forestry and Technology Changsha 410004 China

Laboratory batch experiments were conducted to study arsenic （As） removal from a naturally contaminated soil using phosphoric acid （H3PO4） and potassium dihydrogen phosphate （KHEPO4）. Both H3PO4 and KHEPO4 proved to reduce toxicity of the soil in terms of soil As content, attaining more than 20% As removal at a concentration of 200 mmol/L. At the same time, acidification of soil and dissolution of soil components （Ca, Mg, and Si） resulted from using these two extractants, especially H3PO4. The effectiveness of these two extractants could be attributed to the replacement of As by phosphate ions （PO4^3-）. The function of H3PO4 as an acid to dissolve soil components had little effects on As removal. KH2PO4 almost removed as much As as H3PO4, but it did not result in serious damage to soils, indicating that it was a more promising extractant. The results of a kinetic study showed that As removal reached equilibrium after incubation for 360 rain, but dissolution of soil components, especially Mg and Ca, was very rapid. Therefore dissolution of soil components would be inevitable if As was further removed. Elovich model best described the kinetic data of As removal among the four models used in the kinetic study.

关键词： arsenic (As) removal phosphoric acid (H3PO4), potassium dihydrogen phosphate (KH2PO4) chemical extraction

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Effect of Solvophilic Chain Length in PISA Particles on Pickering Emulsion

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Chinese Journal of Chemistry 2021年第12期39卷 3448-3454页

作者： min zeng Shuo Zhou Xiaofeng Sui Jinying Yuan Key Lab of Organic Optoelectronics and Molecular Engineering of ministry of Education Department of ChemistryTsinghua UniversityBeijing 100084China Key Lab of Science and Technology of Eco-textile Ministry of EducationCollege of ChemistryChemical Engineering and BiotechnologyDonghua UniversityShanghai 201620China

The morphology of polymeric nanoparticles prepared by polymerization-induced self-assembly(PISA)is depended on the degree of polymerization of the solvophilic and solvophobic ***,a series of poly(N,N-dimethylaminoethyl methacrylate)-b-poly(benzyl methacrylate)(PDMA-b-PBzMA)diblock copolymer spherical nanoparticles were synthesized via reversible addition-frag-mentation chain transfer(RAFT)mediated *** diblock copolymer nanoparticles are with nearly the same hydrodynamic size and solvophobic chain length,but with different solvophilic chain *** used these nanoparticles to stabilize the oil-in-water Pickering *** find that the stability of Pickering emulsion increases with the length of solvophilic chain of the ***,the droplet size of the Pickering emulsion can be tailored by varying the oil/water ratio and concentration of nanoparticles.

关键词： Pickering emulsion Polymerization-induced self-assembly Polymerization Block copolymer Nanoparticles

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Characteristics Analysis of Condensation outside Horizontal Tube Bundles and Novel Condensation Enhancement Method

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Journal of Thermal Science 2022年第3期31卷 934-945页

作者： LI Nianqi TIAN Ke KE Hanbing zeng min WANG Qiuwang Key Laboratory of Thermo-Fluid Science and Engineering Ministry of EducationXi’an Jiaotong UniversityXi’an710049China Key Lab on Steam Power System Wuhan Second Ship Design and Research InstituteWuhan430025China

Condensation is a phase-change heat-transfer phenomenon crucial in many industries involving latent heat release and mass ***-and-tube condensers are essential contributors to the condensation process,and their tube bundles serve as a ***,the thermal-hydraulic characteristics of condensation in a longitudinal-flow shell-and-tube condenser were investigated *** shell-side longitudinal-flow condensation on the horizontal tube bundles was studied considering inlet flow rate,overheating temperature,and non-condensable *** pressure drops and heat transfer coefficients were subdivided into several components to provide further ***-phase interface behavior analyses were conducted to demonstrate the outcomes with respect to the non-condensable gas layer,vapor quality,and non-condensable gas *** on the thorough quantitative analyses outlined above,the thermal resistance of the condensation on the horizontal tube bundle was *** thermal resistance outside the tube was found to dominate the condensation ***,hexagon clamping baffles(HCBs)were introduced as a novel solution to impair condensate boundary layers and provide perturbations to intensify condensation heat *** results revealed that the HCBs enhanced the total heat transfer coefficients by 8.1%–40.7%while reducing the critical overheating temperature and the threshold ratio between sensible and latent heat.

关键词： shell-and-tube condenser film condensation non-condensable gas thermal resistance analysis

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