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High-temperature corrosion of Sn-Bi-Zn-Ga alloys as heat transfer fluid

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Rare Metals 2021年第8期40卷 2221-2229页

作者： Qing-Meng Wang Xiao-Min Cheng yuan-yuan Li guo-ming yu Zhi Liu School of Materials Science and Engineering Wuhan University of TechnologyWuhan430070China School of Mechanical and Electrical Engineering Huanggang Normal UniversityHuanggang438000China

The new heat transfer alloy is highly reactive at high temperatures,and the corrosion of the container material determines the service life of the heat transfer *** high-temperature corrosion of Sn-Bi-Zn-Ga alloys as heat transfer fluid was *** microstructure and elemental distribution were studied by field emission scanning electron microscopy(FESEM)and energy dispersive spectroscopy(EDS).The thermal properties before and after corrosion were studied by differential scanning calorimetry(DSC).The results show that the corrosion kinetics of the studied materials follows the parabolic law and the thermal properties after corrosion are *** significantly improves the thermal conductivity.316 stainless steel exhibits excellent corrosion resistance due to its high Cr and Ni *** mechanism analysis shows that the oxidation of Ga has a smaller Gibbs free energy,and an oxide forms at the corrosion interface to prevent dissolution corrosion and oxidative corrosion of the container material.

关键词： Sn-Bi-Zn-Ga Heat transfer fluids Thermophysical properties High-temperature corrosion

Microstructures and thermal properties of Sn-Bi-Pb-Zn alloys as heat storage and transfer materials

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Rare Metals 2019年第4期38卷 350-358页

作者： Qing-Meng Wang Xiao-Min Cheng yuan-yuan Li guo-ming yu Zhi Liu School of Materials Science and Engineering Wuhan University of TechnologyWuhan 430070 China School of Mechanical and Electrical Engineering Huanggang Normal University Huanggang 438000 China

Low-melting-point alloy has the characteristics of high thermal conductivity,low solidus temperature and the wide range of use temperature,which is a potential heat transfer *** microstructure and thermal properties of Sn-Bi-Pb-Zn alloys as heat transfer and storage material were investigated in this *** phase compositions,microstructure and thermal properties were investigated by X-ray diffusion (XRD),electron probe microanalysis (EPMA) and differential scanning calorimeter (DSC) analysis,*** results show that the phases of Sn-Bi-Zn and Sn-Pb-Zn alloys are mainly eutectic formed by solid solution,while the formation of Pb7Bi3 intermetallic compounds decreases the melting point of Sn-Bi-Pb and *** thermal properties of the zinc-containing alloys are better than that of Sn-Bi-Pb,but the weight of the zinc-containing alloys significantly reduces above 900 ℃.As the density,specific heat capacity and thermal diffusivity change with temperature and physical state,the thermal conductivity of the alloys first decreases and then *** results demonstrate the feasibility of using low-melting alloys as the heat transfer and storage material.

关键词： Heat transfer Microstructure Metal alloy Thermal properties Solar power

Comparative Study on Super Fine Mesophase Powder and MCMB Used to Manufacture High-Density Isotropic Carbon Bulks

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Chinese Journal of Aeronautics 2006年第B12期19卷 187-191页

作者： LI Tong-qi HU Zi-jun WANG Jun-shan guo yu-ming WANG Cheng-yang National Key Laboratory of Advanced Functional Composite Materials Aerospace Research Institute of Materials and Processing Technology Beijing 100076 China Key Laboratory for Green Chemical Technology of State Education Ministry School of Chemical Engineering and Technology Tianjin University Tianjin 300072China

Mesocarbon microbeads （MCMB） and super fine mesophase powder （SFMP） were prepared firstly from a coal tar pitch and then hot-condensed into high-density isotropic carbon （HDIC） bulks under 160 MPa and finally sintered at 1 000 ℃. By analyzing the thermogravimetric behavior of the MCMB and SFMP powders, their volume shrinkage and weight loss during sintering and the bulk density and flexural strengths of their sintered bulks, it was found that the smaller sizes and the richer β-resin contents of SFMP ha）re facilitated formation of sintered bulks with more compact isotropic structure and higher flexural strengths than MCMB. Because of the filling and bonding effects of SFMP on MCMB bulks, addition of SFMP, albeit a little, can greatly increase the flexural strengths of sintered bulks of MCMB. However, adding MCMB, even a slight amount, into SFMP can severely impair the flexural strength of sintered bulks. This might be attributed to both the crack initiation along the boundaries between MCMB and SFMP and the formation of layered texture of MCMB sphere.

关键词： mesocarbon microbeads super fine mesophase powder (SFMP) high-density isotropic carbon (HDIC) bulk sintered bulk

The Impact of Relative Humidity and Atmospheric Pressure on Mortality in Guangzhou, China

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Biomedical and Environmental Sciences 2014年第12期27卷 917-925页

作者： OU Chun Quan YANG Jun OU Qiao Qun LIU Hua Zhang LIN guo Zhen CHEN Ping Yan QIAN Jun guo yu ming State Key Laboratory of Organ Failure Research Department of Biostatistics School of Public Health and Tropical Medicine Southern Medical University National Institute for Communicable Disease Control and Prevention Chinese Center for Disease Control and Prevention Guangzhou First People's Hospital Guangzhou Medical University Guangzhou Center for Disease Control and Prevention Department of Mathematics and Physics School of Biomedical Engineering Southern Medical University Department of Epidemiology and Biostatistics School of Population Health The University of Queensland

Objective Although many studies have examined the effects of ambient temperatures on mortality, little evidence is on health impacts of atmospheric pressure and relative humidity. This study aimed to assess the impacts of atmospheric pressure and relative humidity on mortality in Guangzhou, China. Methods This study included 213,737 registered deaths during 2003-2011 in Guangzhou, China. A quasi-Poisson regression with a distributed lag non-linear model was used to assess the effects of atmospheric pressure/relative humidity. Results We found significant effect of low atmospheric pressure/relative humidity on mortality. There was a 1.79% （95% confidence interval： 0.38%-3.22%） increase in non-accidental mortality and a 2.27% （0.07%-4.51%） increase in cardiovascular mortality comparing the 5th and 25th percentile of atmospheric pressure. A 3.97% （0.67%-7.39%） increase in cardiovascular mortality was also observed comparing the 5th and 25th percentile of relative humidity. Women were more vulnerable to decrease in atmospheric pressure and relative humidity than men. Age and education attainment were also potential effect modifiers. Furthermore, low atmospheric pressure and relative humidity increased temperature-related mortality. Conclusion Both low atmospheric pressure and relative humidity are important risk factors of mortality. Our findings would be helpful to develop health risk assessment and climate policy interventions that would better protect vulnerable subgroups of the population.

关键词： Relative humidity Atmospheric pressure Temperature Mortality

No Incidence of Liver Cancer Was Observed in A Retrospective Studyof Patients with Aristolochic Acid Nephropathy

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Chinese Journal of Integrative Medicine 2024年第2期30卷 99-106页

作者： SU Tao FANG Zhi-e guo yu-ming WANG Chun-yu WANG Jia-bo JI Dong BAI Zhao-fang YANG Li XiAO Xiao-he Renal Division Department of MedicinePeking University First HospitalBeijing(100034)China Department of Pharmacy Chongqing Hospital of Traditional Chinese MedicineChongqing(400021)China Department of Hepatology Fifth Medical Center of Chinese PLA General HospitalBeijing(100039)China China Military Institute of Chinese Materia Fifth Medical Center of Chinese PLA General HospitalBeijing(100039)China Phase I Clinical Trials Unit Department of Medicine for Infectious DiseasesFifth Medical Center of Chinese PLA General HospitalBeijing(100039)China Department of Pharmacy Affiliated Hospital of Shandong University of Traditional Chinese MedicineJinan(250000)China National Key Laboratory of Kidney Diseases Beijing(100039)China

Objective:To assess the risk of aristolochic acid(AA)-associated cancer in patients with AA nephropathy(AAN).Methods:A retrospective study was conducted on patients diagnosed with AAN at Peking University First Hospital from January 1997 to December ***-term surveillance and follow-up data were analyzed to investigate the influence of different factors on the prevalence of *** primary endpoint was the incidence of liver cancer,and the secondary endpoint was the incidence of urinary cancer during 1 year after taking AA-containing medication to ***:A total of 337 patients diagnosed with AAN were included in this *** the initiation of taking AA to the termination of follow-up,39 patients were diagnosed with *** cases of liver cancer were observed throughout the entire follow-up period,with urinary cancer being the predominant type(34/39,87.17%).Logistic regression analysis showed that age,follow-up period,and diabetes were potential risk factors,however,the dosage of the drug was not significantly associated with urinary ***:No cases of liver cancer were observed at the end of ***,a high prevalence of urinary cancer was observed in AAN *** a direct causality between AA and HCC is challenging.

关键词： aristolochic acid hepatocellular carcinoma urinary cancer drug safety retrospective study

Landscape of Hepatobiliary Adverse Drug Reactions Related to Preparations Containing Psoraleae Fructus and Its Application in Pharmacovigilance

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Chinese Journal of Integrative Medicine 2021年第11期27卷 832-837页

作者： GE Fei-lin NIU ming HAN Zi-xin CAO Jun-ling WANG Jia-bo BAI Zhao-fang SONG Hai-bo guo yu-ming XIAO Xiao-he School of Chinese Materia Medica Beijing University of Chinese MedicineBeijing100029China Department of Hepatology Fifth Medical Center of Chinese PLA General HospitalBeijing100039China Department of Pharmacy Dongfang Hospital Affiliated to Beijing University of Chinese MedicineBeijing100078China Center for Drug Reevaluation National Medical Products AdministrationBeijing100022China

Objective To analyze clinical feature and information of medication to explore the risk signals of preparations containing Psoraleae Fructus(BGZP)related with hepatobiliary adverse drug reactions(ADR),in order to reinforce *** A retrospective study was conducted based on hepatobiliary ADR related with BGZP from the China Adverse Drug Reaction Monitoring System in years from January 2012 to December *** and general ADRs were analyzed and *** There were 355 cases of hepatobiliary ADR related to *** the amount of cases and the proportion of serious ADR showed an increasing growth by years(P<0.05).It was found that 10.43%of 355 cases may be involved with irrational drug use,including overdose,repeated medication,and combination of multiple *** were 190 cases which used BGZP(non-combination),and they were mainly for common in diseases caused by abnormal immune activation(accounting for 40.53%of the total cases).Especially at the age group with the most cases with age of 41–50 years,the cases associated with immunological diseases of female were obviously more than that of male(P<0.05).The latency of hepatobiliary ADR related to BGZP ranged from 1 to 386 days,and the median latency was 27.5 days,along with the range of cumulative dose(0.45–520.02 g)as well as the daily dose(0.09–2.64 g/d)after the *** Cases of hepatobiliary ADR related to BGZP showed significant individual differences,and there was no correlation between drug usage duration and dosage and the occurrence of hepatobiliary *** may be similar with idiosyncratic drug-induced liver injury,and recommended that BGZP should be used with more caution under monitoring liver function,especially in female patients with immunological diseases.

关键词： drug safety hepatobiliary adverse drug reaction Psoraleae Fructus pharmacovigilance

Catalytic Performance of Carbon Smoke over Ag-LSCF Composite Catalysts

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Journal of Wuhan University of Technology(Materials Science) 2025年第1期40卷 30-34页

作者： guo Guanlun HAN ming LU Shaomin yu Jing JU Hongling 无 Hubei Key Laboratory of Advanced Technology for Automotive Components&Hubei Collaborative Innovation Center for Automotive Components Technology Wuhan University of TechnologyWuhan 430070China College of Mechanical and Transportation Southwest Forestry UniversityKunming 650000China

To improve the catalytic performance of La_(0.6)Sr_(0.4)Co_(0.2)Fe_(0.8)O_(3)(LSCF)towards carbon soot,we utilized the impregnation method to incorporate Ag into the prepared LSCF *** conducted a series of characterization tests and evaluated the soot catalytic activity of the composite catalyst by comparing it with the LaCoO_(3) group,LaFeO_(3) group,and catalyst-free *** results indicate that the Ag-LSCF composite catalyst exhibits the highest soot catalytic activity,with the characteristic temperature values of 376.3,431.1,and 473.9℃at 10%,50%,and 90%carbon soot conversion,*** values are 24.8,20.2,and 23.1℃lower than those of the LSCF *** also shows that LSCF can improve the catalytic activity of soot after compounding with Ag,and reflects the necessity of using catalysts in soot combustion *** characterization and BET test show that Ag-LSCF has more abundant surface-adsorbed oxygen species,larger specific surface area and pore volume than LSCF,which also proves that Ag-LSCF has higher soot catalytic activity.

关键词： metallic composites carbon smoke oxidation perovskite catalyst soot

Screening and evaluation of commonly-used anti-influenza Chinese herbal medicines based on anti-neuraminidase activity

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Chinese Journal of Natural Medicines 2016年第10期14卷 794-800页

作者： HAN Xue ZHANG Ding-Kun guo yu-ming FENG Wu-Wen DONG Qin ZHANG Cong-En ZHOU Yong-Feng LIU Yan WANG Jia-Bo ZHAO Yan-Ling XIAO Xiao-He YANG ming College of Pharmacy Chengdu University of Traditional Chinese Medicine China Military Institute of Chinese Medicine 302 Military Hospital Department of pharmacy 302 Military Hospital Key Laboratory of Modern Preparation of Traditional Chinese Medicine Ministry of EducationJiangxi University of Traditional Chinese Medicine

Anti-influenza Chinese herbal medicines(anti-flu CHMs) have advantages in preventing and treating influenza virus infection. Despite various data on antiviral activities of some anti-flu CHMs have been reported, most of them could not be compared using the standard evaluation methods for antiviral activity. This situation poses an obstacle to a wide application of anti-flu CHMs. Thus, it was necessary to develop an evaluation method to estimate antiviral activities of anti-flu CHMs. In the present study, we searched for anti-flu CHMs, based on clinic usage, to select study objects from commonly-used patented anti-flu Chinese medicines. Then, a neuraminidase-based bioassay, optimized and verified by HPLC method by our research group, was adopted to detect antiviral activities of selected 26 anti-flu CHMs. Finally, eight of these herbs, including Coptidis Rhizoma, Isatidis Folium, Lonicerae Flos, Scutellaria Radix, Cyrtomium Rhizome, Houttuynia Cordata, Gardeniae Fructus, and Chrysanthemi Indici Flos, were shown to have strong antiviral activities with half maximal inhibitory concentration(IC_(50)) values being 2.02 to 6.78 mg·m L^(–1)(expressed as raw materials). In contrast, the IC_(50) value of positive control peramivir was 0.38 mg·m L^(–1). Considering the extract yields of CHMs, the active component in these herbs may have a stronger antiviral activity than peramivir, suggesting that these herbs could be further researched for active compounds. Moreover, the proposed neuraminidase-based bioassay was high-throughput and simple and could be used for evaluation and screening of anti-flu CHMs as well as for their quality control.

关键词： Anti-influenza Chinese herbal medicines Viral neuraminidase Bioassay Screening Evaluation

Association of Residential Greenness with the Prevalence of Metabolic Syndrome in a Rural Chinese Population:the Henan Rural Cohort Study

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Biomedical and Environmental Sciences 2022年第1期35卷 89-94页

作者： HE Ya Ling LIU Xiao Tian TU Run Qi PAN ming ming NIU Miao Miao CHEN Gong Bo HOU Jian MAO Zhen Xing HUO Wen Qian LI Shan Shan guo yu ming WANG Chong Jian Department of Epidemiology and Biostatistics College of Public HealthZhengzhou UniversityZhengzhou 450001HenanChina Guangdong Provincial Engineering Technology Research Center of Environmental and Health risk Assessment Department of Occupational and Environmental HealthSchool of Public HealthSun Yat-sen UniversityGuangzhou 510080GuangdongChina Department of Epidemiology and Preventive Medicine School of Public Health and Preventive MedicineMonash UniversityMelbourne 3004Australia

Metabolic syndrome(MetS),a cluster of modifiable metabolic conditions(including abdominal obesity,dyslipidemia,elevated blood pressure,and hyperglycemia),has become an essential contributor to the global health burden... 详细信息

关键词： Metabolic elevated Rural