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Journal of Wuhan University of Technology(Materials Science) 2022年第4期37卷 746-752页

作者： SUN Li yu Bo yu wei TANG Xiaolin HU Mingjie HUANG Chi College of Chemistry and Molecular Sciences Wuhan UniversityWuhan 430072China Hubei Military-Civilian Integration and Co-Innovation Center of Aerospace Power and Materials Technology Wuhan 430072China

Natural rubber/styrene-butadiene-styrene(NR/SBS)membrane was prepared by solution blend,and then used for recovery of butanol from its dilute solution by pervaporation(PV).The thermodynamic and mechanical properties of NR/SBS blend membrane were characterized by TGA and tensile test,respectively.A layer of relatively dense blend membrane with the thickness of about 37μm was closely cast on a layer of porous polyvinylidene difluoride(PVDF)*** there was no obvious phase separation observed between the interface of two *** flux and separation factor increased with increasing feed *** flux increased as feed concentration increased *** blend membrane which got the best performance obtained membrane separation factor of 28.8 with total flux of 2695.2 g/m^(2)h at 70℃ when feed concentration was 4.00wt%.

关键词： natural rubber styrene-butadiene-styrene butanol pervaporation

Experimental investigation on thermal conductivity and viscosity of aluminum nitride nanofluid

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Particuology 2011年第2期9卷 187-191页

作者： wei yu Huaqing Xie Yang Li Lifei Chen School of Urban Development and Environmental Engineering Shanghai Second Polytechnic University Shanghai 201209 China

Aluminum nitride nanoparticles （AINs） have been found to be a good additive for enhancing the thermal conductivity of traditional heat exchange fluids. At a volume fraction of 0.1, the thermal conductivity enhancement ratios are 38.71% and 40.2%, respectively, for ethylene glycol and propylene glycol as the base fluids. Temperature does not have much influence on the enhanced thermal conductivity ratios of the nanofluids, though a volume fraction of 5.0% appears to signify a critical concentration for rheology： for 〈5.0vo1% for Newtonian behavior, and for 〉5.0vo1% for obvious shear-shinning behavior, for both ethylene glycol and propylene glycol.

关键词： NanofluidAluminum nitrideThermal conductivityViscosity

Wellbore-heat-transfer-model-based optimization and control for cooling downhole drilling fluid

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Petroleum Science 2024年第3期21卷 1955-1968页

作者： Chao Wang He Liu Guo-wei yu Chen yu Xian-Ming Liu Peng Huang Yangtze University Jingzhou434023HubeiChina State Key Laboratory of Petroleum Resources and Engineering China University of Petroleum(Beijing)Beijing2249China CNPC Bohai Drilling Engineering Co. LtdTianjin300280China Exploration Development and Construction Engineering Division of PetroChina Jidong Oilfield Company Tangshan63200HebeiChin Henan University of Urban Construction Pingdingshan467036HenanChina

To address the two critical issues of evaluating the necessity of implementing cooling techniques and achieving real-time temperature control of drilling fluids underground in the current drilling fluid cooling technology,we first established a temperature and pressure coupled downhole heat transfer model,which can be used in both water-based and oil-based drilling ***,fourteen factors,which could affect wellbore temperature,were *** on the standard deviation of the downhole temperature corresponding to each influencing factor,the influence of each factor was *** influencing factors that can be used to guide the drilling fluid's cooling technology were drilling fluid thermal conductivity,drilling fluid heat capacity,drilling fluid density,drill strings rotation speed,pump rate,viscosity,ROP,and injection *** nondominated sorting genetic algorithm was used to optimize these six parameters,but the optimization process took 182 *** these eight parameters'influence rules with the nondominated sorting genetic algorithm can reduce the optimization time to 108 ***,the downhole temperature has been demonstrated to increase with the inlet temperature increasing linearly under quasi-steady *** this law and PID,the downhole temperature can be controlled,which can reduce the energy for cooling the surface drilling fluid and can ensure the downhole temperature reaches the set value as soon as possible.

关键词： Drilling Cooling Influencing factors Analysis Optimization Control

Baihui(DU20)-penetrating-Qubin(GB7) acupuncture inhibits apoptosis in the perihemorrhagic penumbra

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Neural Regeneration Research 2018年第9期13卷 1602-1608页

作者： Beng Zhang Xiao-Hong Dai Xue-Ping yu wei Zou wei Teng Xiao-wei Sun wei-wei yu Hao Liu Hui Wang Meng-Juan Sun Meng Li Heilongjiang University of Chinese Medicine Harbin Heilongjiang Province China First Affiliated Hospital Heilongjiang University of Chinese Medicine Harbin Heilongjiang Province China Clinical Key Laboratory of Integrated Traditional Chinese and Western Medicine Heilongjiang University of Chinese Medicine HarbinHeilongjiang Province China Department of Acupuncture and Moxibustion Tongde Hospital of Zhejiang Province Hangzhou Zhejiang Province China

Baihui（DU20）-penetrating-Qubin（GB7） acupuncture can inhibit inflammatory reactions and activate signaling pathways related to proliferation after intracerebral ***,there is no research showing the relationship between this treatment and cell *** models of intracerebral hemorrhage were established by injecting 60 μL of autologous blood into the right side of the *** hours later,the needle traveled subcutaneously from the Baihui acupoint to Qubin *** needle was alternately rotated（180 ± 10 turns/min） manually along clockwise and counter-clockwise *** lasted for 7 days,and was performed three times each for 6 minutes with 6-minute intervals between *** intraperitoneally receiving Sonic hedgehog pathway activator,purmorphamine（1 mg/kg per day）,served as positive *** and sensory function were assessed using the Ludmila Belayev *** of pathological changes were measured in the perihemorrhagic penumbra using hematoxylin-eosin *** was examined by terminal deoxynucleotidyl transferase（Td T）-mediated d UTP nick end labeling *** of smoothened（Smo） and glioma-associated homolog 1（Gli1） was determined by western blot *** results showed that Baihui-penetrating-Qubin acupuncture promoted recovery of motor and sensory function,reduced the apoptotic cell percentage in the perihemorrhagic penumbra,and up-regulated Smo and Gli1 *** conclude that Baihui-penetrating-Qubin acupuncture can mitigate hemorrhage and promote functional recovery of the brain in a rat model of intracerebral hemorrhage,possibly by activating the Sonic hedgehog pathway.

关键词： nerve regeneration acupuncture treatment intracerebral hemorrhage neurological function Ludmila Belayev test TUNEL assay purmorphamine Smo Ptchl Glil neural regeneration

A promising method to recover spent V_(2)O_(5)-WO_(3)/TiO_(2) catalyst: treatment by vanadium-titanium magnetite sintering process

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Journal of Iron and Steel Research International 2022年第8期29卷 1176-1184页

作者： Hong-ming Long yu-dong Zhang Tao Yang Li-xin Qian Zheng-wei yu School of Metallurgical Engineering Anhui University of TechnologyMa’anshan 243002AnhuiChina Anhui Province Key Laboratory of Metallurgy Engineering and Resources Recycling Anhui University of TechnologyMa’anshan 243002AnhuiChina

A large number of spent selective catalytic reduction(SCR)denitration catalysts are produced after the ultra-low emission transformation of coal-fired power plants in *** to the China’s“Directory of National Hazardous Wastes(Version 2021)”,these spent vanadium-tungsten-titanium catalysts are classified as“HW50”hazardous waste,and their disposal and utilization processes have been strictly ***,an effective and low-cost technique was developed to treat and utilize these spent SCR catalysts by the vanadium-titanium magnetite sintering *** of adding spent SCR catalysts on the sintering production process and product quality indexes of sinter were *** results showed that adding spent SCR catalysts can improve the sintering granulation and green feed permeability,thereby increasing the productivity and flame front *** the addition proportion of spent SCR catalysts is less than 1 wt.%,the performance indexes of the finished sinter are basically equal to those of the finished sinter without adding spent SCR *** increasing the proportion of spent SCR catalysts to 2.0 wt.%results in a decrease in product quality indexes,which could be attributed to the increase in perovskite content in the finished sinter.

关键词： Spent selective catalytic reduction catalyst Hazardous waste Vanadium-titanium magnetite sintering Recovery Utilization

Thermal stability and sputtering resistance under irradiation of yttria dispersed ferrum films

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Rare Metals 2011年第3期30卷 258-261页

作者： LI Zhengcao yu Xiaoyi MIAO wei ZHANG Zhengjun State Key Laboratory of New Ceramic and Fine Processing Department of Materials Science and Engineering Tsinghua University Beijing 100084 China

Oxide dispersion strengthened （ODS） steels are considered as potential candidates for high temperature applications in fusion reactors be-cause of their excellent thermal creep behavior. In the present work, the double-target magnetron co-sputtering method was recommended to prepare yttria dispersed ferrum films. Vacuum annealing and ion irradiation were carried out to study the surface topography and structural features of the prepared yttria dispersed ferrum samples. Experiments proved that while the yttria doping ratio in the ferrum film increases, the recrystallization temperature of the film will be enhanced and the sputtering damage by Xenon ion irradiation will be lowered. The sput-tering resistance of the obtained films would be improved with the growing of grains under vacuum annealing.

关键词： ferrum yttria dispersion magnetron sputtering resistance thermal properties irradiation

Influence of vacuum annealing and irradiation on magnetic properties of Fe-3% Y_2O_3 films

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Rare Metals 2011年第5期30卷 453-457页

Yttria （Y） dispersed ferrum （Fe） films were prepared by a double-target magnetron co-sputtering method. Vacuum annealing and xenon ion irradiation were conducted to investigate the influence on the magnetic and mechanical properties of the films. The crystal grain growth mechanism and second phase precipitation mechanism were conducted simultaneously in the vacuum annealing process. These two effects led to an opposite variation of nano-hardness and coercivity in the films. Xenon ion irradiation played a role in rapid annealing, which also affected the magnetic performance of the yttria dispersed ferrum films.

关键词： magnetic films yttria magnetron sputtering annealing irradiation magnetic properties

Relationship between VEGF,EGF and Invasion,Metastasis of Gastric Cancer Cells

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Chinese Journal of Cancer Research 2009年第2期21卷 122-129页

作者： Chun-feng Li Yan Ma yu-zhe wei Ying-wei Xue Department of Abdominal Surgery Cancer Hospital Harbin Medical University Harbin 150081 China

Objective： To investigate the relationship between expression of vascular endothelial growth factor （VEGF）, epidermal growth factor （EGF） and the biological properties of gastric cancer cells such as invasion and metastasis. Methods： RT-PCR was performed to semi-quantitatively detect the mRNA expressions of EGF, EGFR, VEGF and VEGFR in four kinds of gastric cancer cell lines BGC823, MGCS03, HGC27 and SGC7901, which were classified by their differentiation degree in our experiment. We obtained cell line growth curves from MTT assays. The migration of gastric cancer cells was observed under inverted phase contrast microscope. The changes of invasion and adhesion were detected by a Transwell assay. Results： The growth rates slowed down sequentially in MGC803, HGC27, BGC823 and SGC7901（P〈 0.05）. The ability of migration, invasion and adhesion were reduced sequentially, and the difference was significant. The expressions of EGF, EGFR, VEGF and VEGFR were significantly stronger in MGCS03 and HGC27 than in BGC823 and SGC7901 cells, and the difference was statistically significant（P〈0.05）. Conclusion： The expressions of VEGF and EGF had close relationship with the properties of migration, adhesion and invasion of gastric cancer cells in vitro. Thus, targeting VEGF and EGF may be a potential therapeutic strategy for inhibiting peritoneal metastasis of gastric cancer.

关键词： Gastric cancer cells Vascular endothelial growth factor(VEGF) Epidermal growth factor(EGF),Metastasis

Three-dimensional Molecular Geometry of PEG Hydrogels by an “Expansion-Contraction” Method through Monte Carlo Simulations

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Chinese Journal of Polymer Science 2015年第5期33卷 721-731页

作者： Ao-kai Zhang 凌君 yu-wei Sun 付国东 School of Chemistry and Chemical Engineering Southeast University Department of Polymer Science and Engineering Zhejiang University

Three-dimensional（3-D） coarse-grained Monte Carlo algorithms were used to simulate the conformations of swollen hydrogels formed by copper（I）-catalyzed azide-alkyne cycloaddition（Cu AAC）. The simulation consists of three successive steps including diffusion, cross-linking and relaxation. The cross-linking of multifunctional reaction sites is simulated instantly followed by fast crosslinking. In order to explore the validity of this approach pristine poly（ethylene glycol）（PEG） hydrogels with tri- and tetra-functional reaction sites（G3 and G4 respectively） were prepared and characterized. The data from the simulations were found to be in good agreement with experimental results such as PEG lengths between crosslinks, pore volume and pore radius distribution, indicating the validity of the modeling algorithm. The calculated PEG lengths in G3 and G4 networks are close（≈ 4.6 nm）. The 3-D visual topological structure of the hydrogel network suggests that the ＂ideal＂ hydrogel is far from cubic, diamond or any well defined structures of regular repeating cells.

关键词： Monte Carlo Hydrogel Molecular geometry Cu AAC

The Non-Inclusive Diagnosability of Regular Graphs

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Journal of the Operations Research Society of China 2023年第4期11卷 891-910页

作者： yu-Long wei Tong-Tong Ding Min Xu School of Mathematical Sciences Beijing Normal UniversityLaboratory of Mathematics and Complex SystemsMinistry of EducationBeijing100875China Department of Mathematics Taiyuan University of TechnologyTaiyuan030024China

Fault diagnosis is an important area of study with regard to the design and maintenance of multiprocessor systems.A new measure for fault diagnosis of systems,namely,non-inclusive diagnosability(denoted by MM^(*)),was proposed by Ding et *** this paper,we establish the non-inclusive diagnosability of a class of regular graphs under the PMC model and the MM^(*)*** applications,the non-inclusive diagnosabilities of hypercubes,hierarchical hypercubes,folded hypercubes,star graphs,bubble-sort graphs,pancake graphs and dual cubes are determined under the PMC model and the[Math Processing Error]model.

关键词： PMC model MM^(*)model Regular graph Fault diagnosability