As the pump turbine tends to be operated with high head and high rotational speed, the study of stability problems becomes more important. The pump turbine usually works at operating conditions where the guide vanes e...As the pump turbine tends to be operated with high head and high rotational speed, the study of stability problems becomes more important. The pump turbine usually works at operating conditions where the guide vanes experience strong vibrations. However, most traditional studies were carried out based on constant GVO(guide vane opening) simulations. In this work, dynamic analysis on pressure fluctuation in the vaneless region of a pump turbine model was conducted using a dynamic mesh method in turbine mode. 3D unsteady simulations were conducted where GVO was closed and opened by 1° from the initial 18°. Detailed time domain and frequency domain characteristics on pressure fluctuation in the vaneless region under different guide vane rotational states compared with constant GVO simulations were investigated. Results show that, during the guide vanes oscillating process, the low and intermediate frequency components in the vaneless region are significantly different. The amplitudes of pressure fluctuation are higher than those with constant GVO simulations, which agree better with the experimental data. In addition, the pressure fluctuation increases when GVO is opened, and vice versa. It can be concluded that pressure fluctuation in the vaneless region is strongly influenced by the oscillating of the guide vanes.展开更多
Wrinkling analysis of a rectangular membrane with a single crease under shearing is performed to understand the wrinkle-crease interaction behaviors. The crease is considered by introducing the residual stresses from ...Wrinkling analysis of a rectangular membrane with a single crease under shearing is performed to understand the wrinkle-crease interaction behaviors. The crease is considered by introducing the residual stresses from creasing and the effective modulus into the baseline configuration with assumed circular cross-sectional crease geometry. The wrinkling analysis of the creased membrane is then performed by using the direct perturb-force （DP） simulation technique which is based on our modified displacement components （MDC） method. Results reveal that the crease may influence the stress transfer path in the membrane and further change the wrinkling direction. The crease appears to improve the bending stiffness of the membrane which has an effective resistance on the wrinkling evolution. The effects of the crease orientation on wrinkle-crease interaction are studied toward the end of this paper. The results show that the wrinkling amplitude, wavelength, and direction increase as the crease orientation increases, and the wrinkling number decreases with the increasing crease orientation. These results will be of great benefit to the analysis and the control of the wrinkles in the membrane structures.展开更多
In this letter, the H2 production from the aqueous solutions of a series of fluorescein and eosin dyes （as the photocatalysts） with triethanolamine （TEOA, as the reducing agent） and water-soluble K2 PtCl6 （as the...In this letter, the H2 production from the aqueous solutions of a series of fluorescein and eosin dyes （as the photocatalysts） with triethanolamine （TEOA, as the reducing agent） and water-soluble K2 PtCl6 （as the H2 generation catalyst） under the illumination of a 250W展开更多
This article reports a research project undertaken for more than 16 years by the Cancer Depart-ment of Guang An Men Hospital.Tonic Jian Pi Yi Shen (JPYS 健脾益肾),which nourishes thespleen and kidney,was used in combi...This article reports a research project undertaken for more than 16 years by the Cancer Depart-ment of Guang An Men Hospital.Tonic Jian Pi Yi Shen (JPYS 健脾益肾),which nourishes thespleen and kidney,was used in combination with chemotherapy in the treatment of late stage gas-tric cancer patients for the purpose of promoting completion of the chemotherapeutic course,im-proving the general condition,ameliorating the reaction in the digestive system,protectinghemopoiesis and strengthening immunocompetence.The results of lab experiments were found tocoincide with those of clinical application.展开更多
The general operation of dyeing and printing industry maintained a trend of slow stabilization during the 12th Five-Year Program period with obvious results in science and technology,management,energy conservation and...The general operation of dyeing and printing industry maintained a trend of slow stabilization during the 12th Five-Year Program period with obvious results in science and technology,management,energy conservation and environmental protection as well as the balanced development of the industries.Chen Zhihua,president of China Dyeing and Printing Association(CDPA),said that the dyeing and printing industry has in-展开更多
AIM: The hypoglycemic and hypolipidemic effects of the methanol extract of Brassica oleracea var. capitata(MEB) was evaluated in alloxan-induced diabetic rabbits. METHOD: The study was conducted on twenty-eight health...AIM: The hypoglycemic and hypolipidemic effects of the methanol extract of Brassica oleracea var. capitata(MEB) was evaluated in alloxan-induced diabetic rabbits. METHOD: The study was conducted on twenty-eight healthy white rabbits of either sex. All animals were equally divided into four groups. After confirmation of hyperglycemia, the animals of the treated and standard groups were administered MEB(500 mg·kg-1) and glibenclamide(10 mg·kg-1), respectively for 15 and 30 days. The animals of the normal and diabetic controls received normal saline 1 mL/day equivalent to the volume of doses given to the test and standard animals. Biochemical tests were performed at the end of dosing, i.e. the 16 th and 31 st days. RESULTS: The MEB revealed a decrease of 106.6 mg·dL-1 in fasting blood glucose as compared to diabetic control, which was almost comparable to glibenclamide; both of these changes were highly significant. The decrease in total cholesterol and low density lipoprotein was 94.3 and 96.5 mg·dL-1, respectively, whereas the high-density lipoprotein was increased by 26.7 mg·dL-1, as compared to diabetic control. All of the changes in lipid profile were statistically significant. CONCLUSION: These results suggest the potential of MEB as a hypoglycemic and hypolipidemic agent.展开更多
930049 Experimental study on casein prevent-ing iodine deficiant goitre in rats.OUYANGAn(欧阳安),et al.Endocrinol Res Lab,1stAffili Hosp,Henan Med Univ,Zhengzhou.Chin J Endocrinol & Metabol 1992;8(3):159-160.In th...930049 Experimental study on casein prevent-ing iodine deficiant goitre in rats.OUYANGAn(欧阳安),et al.Endocrinol Res Lab,1stAffili Hosp,Henan Med Univ,Zhengzhou.Chin J Endocrinol & Metabol 1992;8(3):159-160.In the experimental study,Wistar rats weredivided into 3 groups:Group A,33 rats fedwith diet purchased from endemic goitre areaand iodine-free distilled water;Group B,33rats fed with the same diet of group A but 50%of casein was added and iodine-free distilledwater,Group C,33 rats fed with general展开更多
PolyethyleneIn early July 2009, due to the price rise ofpetrochemicals, PE (polyethylene) prices in-creased apparently. The prices of LDPE (lowdensity polyethylene) and LLDPE (linear lowdensity polyethylene) reached o...PolyethyleneIn early July 2009, due to the price rise ofpetrochemicals, PE (polyethylene) prices in-creased apparently. The prices of LDPE (lowdensity polyethylene) and LLDPE (linear lowdensity polyethylene) reached over RMB 10000/t. The price growth of HDPE (high den-sity polyethylene) was restricted because ofthe impact from imported goods.展开更多
Objective To study the epidemiological characteristics of diabetes,and to provide effective prevention and intervention strategies for diabetes in Zhejiang Province.Methods Descriptive epidemiological method was used ...Objective To study the epidemiological characteristics of diabetes,and to provide effective prevention and intervention strategies for diabetes in Zhejiang Province.Methods Descriptive epidemiological method was used to analyze the surveillance data of diabetes from 2007 to2012.Results 272 534 cases of newly onset展开更多
Objective To investigate the role of PI3K/Akt signaling in the regulation of epithelial-mesenchymal transition(EMT)of peritoneal mesothelial cells(PMCs)in peritoneal dialysis in vitro and in vivo.Methods The level of ...Objective To investigate the role of PI3K/Akt signaling in the regulation of epithelial-mesenchymal transition(EMT)of peritoneal mesothelial cells(PMCs)in peritoneal dialysis in vitro and in vivo.Methods The level of phosphorylated serine/threonine kinase Akt and the expression of EMT associated gene and protein,including ZO-1,Vimentin and FN,were measured in mice EMT model.In vitro study,phosphorylation level展开更多
2010237 Expression of differentiation antigens on bone marrow myeloid cells of the patients with myelodysplastic syndromes and its clinical significances.LI Lijuan(李丽娟),et al. Dept Hematol & Oncol,General Hosp,...2010237 Expression of differentiation antigens on bone marrow myeloid cells of the patients with myelodysplastic syndromes and its clinical significances.LI Lijuan(李丽娟),et al. Dept Hematol & Oncol,General Hosp,Tianjin Med Univ,Tianjin 300052.Natl Med J China 2010;90(10):672-677.展开更多
Objective To observe the effects of uric acid(UA)on mitochondrial oxidative damage and apoptosis in renal tubular epithelial cells(HK-2),and investigate the possible mechanism.Methods HK-2 cells were exposed to UA(480...Objective To observe the effects of uric acid(UA)on mitochondrial oxidative damage and apoptosis in renal tubular epithelial cells(HK-2),and investigate the possible mechanism.Methods HK-2 cells were exposed to UA(480μmol/L,720μmol/L)for different time(0 h,24 h,48 h)in vitro.The mitochondrial ROS production was detected by Mito SOX staining.The mitochondrial membrane potential was measured by JC-1 staining.The expressions of prohibitin and AIF were examined by Western blotting and immunofluorescence cytochemistry.展开更多
2015160 Association and interaction between 10SNP of peroxisome proliferator-activated receptor and non-HDL-C.LIU Mengmeng(刘萌萌),et al.Suzhou Dis Contr&Prev Center,Suzhou 215123.Chin J Prev 2015;49(3):259-264.Ob...2015160 Association and interaction between 10SNP of peroxisome proliferator-activated receptor and non-HDL-C.LIU Mengmeng(刘萌萌),et al.Suzhou Dis Contr&Prev Center,Suzhou 215123.Chin J Prev 2015;49(3):259-264.Objective To examine the main effect of 10 Peroxi-展开更多
The U.S.International Trade Commission(USITC) June 18th announced its determina-tion in its safeguard investigation involvingcertain passenger vehicle and light truck tiresfrom China,finding that certain passengervehi...The U.S.International Trade Commission(USITC) June 18th announced its determina-tion in its safeguard investigation involvingcertain passenger vehicle and light truck tiresfrom China,finding that certain passengervehicle and light truck tires from China wereimported into the United States in such in-creased quantities or under such conditionsas to cause market disruption.China’s tire analysts said the determination,if approved by the USA President and the U.S.Trade Representative by July 9th,2009,would cause to cut China’s tires export vol-ume to USA by approximately 50%,and re-duce some 20000 workforces.展开更多
By Feng Shiliang of CPCIAIn August 2007,China’s petroleumand chemical industry remained arapid growth inproduction.Amongthe 65 petrochemical products thathave been tracked by CPCIA(ChinaPetroleum and Chemical Industr...By Feng Shiliang of CPCIAIn August 2007,China’s petroleumand chemical industry remained arapid growth inproduction.Amongthe 65 petrochemical products thathave been tracked by CPCIA(ChinaPetroleum and Chemical IndustryAssociation),56 increased theiroutput compared with the sameperiod of 2006,and the output of39 products,in particular,grew byover 10%.The output of naturalgas,pure benzene and methanol in-creased rapidly.Local price ofchemicals showed a fiat increase.Among 159 chemicals recorded,77chemicals had higher prices thanthat in the preceding month.Dueto the implementation of the newexport rebate rates,the growth ofexport has decreased.展开更多
Constant rise of oilprices in 20061.The output growth of crude oilpresents a declining trendThe output of crude oil in China in-creased again in 2006.It reached anall-time high monthly output of 15.736million tons in ...Constant rise of oilprices in 20061.The output growth of crude oilpresents a declining trendThe output of crude oil in China in-creased again in 2006.It reached anall-time high monthly output of 15.736million tons in July 2006.Due to therestriction of resources,however,thegrowth of crude oil production展开更多
Rapid growth of outputWith the considerable growth of the nationaleconomy in recent years,the demand forpolystyrene (PS) downstream products hasincreased drastically and the consumptionof PS has been greatly promoted....Rapid growth of outputWith the considerable growth of the nationaleconomy in recent years,the demand forpolystyrene (PS) downstream products hasincreased drastically and the consumptionof PS has been greatly promoted.The aver-age annual growth of the PS output in Chinawas 17.1% from 2003 to 2008, the averageannual growth of the PS apparent consump-tion was 8.8%,the self-sufficiency rate in-creased constantly and market competitionwas fierce.China’s PS capacity was 5.66million t/a in 2008, output was only 4.展开更多
Objective To study the expressions of heat shock protein 70 (HSP 70) and nuclear factor-kappa B(NF-κB) in the peripheral blood lymphocyte of chronic gastritis (CG) patients of Pi-Wei hygropyrexia syndrome (PWHS) and ...Objective To study the expressions of heat shock protein 70 (HSP 70) and nuclear factor-kappa B(NF-κB) in the peripheral blood lymphocyte of chronic gastritis (CG) patients of Pi-Wei hygropyrexia syndrome (PWHS) and Pi-qi deficiency syndrome(PQDS),and to explore their correlation with Helicobacter pylori(Hp) infection.展开更多
基金supported by the National Key Technology R&G Program(Project No.2012BAF03B01-X)Foundation for Innovative Research Groups of the National Natural Science Foundation of China(Grant No.51121004)
文摘As the pump turbine tends to be operated with high head and high rotational speed, the study of stability problems becomes more important. The pump turbine usually works at operating conditions where the guide vanes experience strong vibrations. However, most traditional studies were carried out based on constant GVO(guide vane opening) simulations. In this work, dynamic analysis on pressure fluctuation in the vaneless region of a pump turbine model was conducted using a dynamic mesh method in turbine mode. 3D unsteady simulations were conducted where GVO was closed and opened by 1° from the initial 18°. Detailed time domain and frequency domain characteristics on pressure fluctuation in the vaneless region under different guide vane rotational states compared with constant GVO simulations were investigated. Results show that, during the guide vanes oscillating process, the low and intermediate frequency components in the vaneless region are significantly different. The amplitudes of pressure fluctuation are higher than those with constant GVO simulations, which agree better with the experimental data. In addition, the pressure fluctuation increases when GVO is opened, and vice versa. It can be concluded that pressure fluctuation in the vaneless region is strongly influenced by the oscillating of the guide vanes.
基金supported by the National Natural Science Foundation of China (10902027)the Specialized Research Fund for the Doctoral Program of Higher Education of China (200802131046)+1 种基金Aeronautical Science Foundation of China (2010ZA77001)the Fundamental Research Funds for the Central Universities(HIT.NSRIF.201156)
文摘Wrinkling analysis of a rectangular membrane with a single crease under shearing is performed to understand the wrinkle-crease interaction behaviors. The crease is considered by introducing the residual stresses from creasing and the effective modulus into the baseline configuration with assumed circular cross-sectional crease geometry. The wrinkling analysis of the creased membrane is then performed by using the direct perturb-force （DP） simulation technique which is based on our modified displacement components （MDC） method. Results reveal that the crease may influence the stress transfer path in the membrane and further change the wrinkling direction. The crease appears to improve the bending stiffness of the membrane which has an effective resistance on the wrinkling evolution. The effects of the crease orientation on wrinkle-crease interaction are studied toward the end of this paper. The results show that the wrinkling amplitude, wavelength, and direction increase as the crease orientation increases, and the wrinkling number decreases with the increasing crease orientation. These results will be of great benefit to the analysis and the control of the wrinkles in the membrane structures.
文摘In this letter, the H2 production from the aqueous solutions of a series of fluorescein and eosin dyes （as the photocatalysts） with triethanolamine （TEOA, as the reducing agent） and water-soluble K2 PtCl6 （as the H2 generation catalyst） under the illumination of a 250W
文摘This article reports a research project undertaken for more than 16 years by the Cancer Depart-ment of Guang An Men Hospital.Tonic Jian Pi Yi Shen (JPYS 健脾益肾),which nourishes thespleen and kidney,was used in combination with chemotherapy in the treatment of late stage gas-tric cancer patients for the purpose of promoting completion of the chemotherapeutic course,im-proving the general condition,ameliorating the reaction in the digestive system,protectinghemopoiesis and strengthening immunocompetence.The results of lab experiments were found tocoincide with those of clinical application.
文摘The general operation of dyeing and printing industry maintained a trend of slow stabilization during the 12th Five-Year Program period with obvious results in science and technology,management,energy conservation and environmental protection as well as the balanced development of the industries.Chen Zhihua,president of China Dyeing and Printing Association(CDPA),said that the dyeing and printing industry has in-
文摘AIM: The hypoglycemic and hypolipidemic effects of the methanol extract of Brassica oleracea var. capitata(MEB) was evaluated in alloxan-induced diabetic rabbits. METHOD: The study was conducted on twenty-eight healthy white rabbits of either sex. All animals were equally divided into four groups. After confirmation of hyperglycemia, the animals of the treated and standard groups were administered MEB(500 mg·kg-1) and glibenclamide(10 mg·kg-1), respectively for 15 and 30 days. The animals of the normal and diabetic controls received normal saline 1 mL/day equivalent to the volume of doses given to the test and standard animals. Biochemical tests were performed at the end of dosing, i.e. the 16 th and 31 st days. RESULTS: The MEB revealed a decrease of 106.6 mg·dL-1 in fasting blood glucose as compared to diabetic control, which was almost comparable to glibenclamide; both of these changes were highly significant. The decrease in total cholesterol and low density lipoprotein was 94.3 and 96.5 mg·dL-1, respectively, whereas the high-density lipoprotein was increased by 26.7 mg·dL-1, as compared to diabetic control. All of the changes in lipid profile were statistically significant. CONCLUSION: These results suggest the potential of MEB as a hypoglycemic and hypolipidemic agent.
文摘930049 Experimental study on casein prevent-ing iodine deficiant goitre in rats.OUYANGAn(欧阳安),et al.Endocrinol Res Lab,1stAffili Hosp,Henan Med Univ,Zhengzhou.Chin J Endocrinol & Metabol 1992;8(3):159-160.In the experimental study,Wistar rats weredivided into 3 groups:Group A,33 rats fedwith diet purchased from endemic goitre areaand iodine-free distilled water;Group B,33rats fed with the same diet of group A but 50%of casein was added and iodine-free distilledwater,Group C,33 rats fed with general
文摘PolyethyleneIn early July 2009, due to the price rise ofpetrochemicals, PE (polyethylene) prices in-creased apparently. The prices of LDPE (lowdensity polyethylene) and LLDPE (linear lowdensity polyethylene) reached over RMB 10000/t. The price growth of HDPE (high den-sity polyethylene) was restricted because ofthe impact from imported goods.
文摘Objective To study the epidemiological characteristics of diabetes,and to provide effective prevention and intervention strategies for diabetes in Zhejiang Province.Methods Descriptive epidemiological method was used to analyze the surveillance data of diabetes from 2007 to2012.Results 272 534 cases of newly onset
文摘Objective To investigate the role of PI3K/Akt signaling in the regulation of epithelial-mesenchymal transition(EMT)of peritoneal mesothelial cells(PMCs)in peritoneal dialysis in vitro and in vivo.Methods The level of phosphorylated serine/threonine kinase Akt and the expression of EMT associated gene and protein,including ZO-1,Vimentin and FN,were measured in mice EMT model.In vitro study,phosphorylation level
文摘2010237 Expression of differentiation antigens on bone marrow myeloid cells of the patients with myelodysplastic syndromes and its clinical significances.LI Lijuan(李丽娟),et al. Dept Hematol & Oncol,General Hosp,Tianjin Med Univ,Tianjin 300052.Natl Med J China 2010;90(10):672-677.
文摘Objective To observe the effects of uric acid(UA)on mitochondrial oxidative damage and apoptosis in renal tubular epithelial cells(HK-2),and investigate the possible mechanism.Methods HK-2 cells were exposed to UA(480μmol/L,720μmol/L)for different time(0 h,24 h,48 h)in vitro.The mitochondrial ROS production was detected by Mito SOX staining.The mitochondrial membrane potential was measured by JC-1 staining.The expressions of prohibitin and AIF were examined by Western blotting and immunofluorescence cytochemistry.
文摘2015160 Association and interaction between 10SNP of peroxisome proliferator-activated receptor and non-HDL-C.LIU Mengmeng(刘萌萌),et al.Suzhou Dis Contr&Prev Center,Suzhou 215123.Chin J Prev 2015;49(3):259-264.Objective To examine the main effect of 10 Peroxi-
文摘The U.S.International Trade Commission(USITC) June 18th announced its determina-tion in its safeguard investigation involvingcertain passenger vehicle and light truck tiresfrom China,finding that certain passengervehicle and light truck tires from China wereimported into the United States in such in-creased quantities or under such conditionsas to cause market disruption.China’s tire analysts said the determination,if approved by the USA President and the U.S.Trade Representative by July 9th,2009,would cause to cut China’s tires export vol-ume to USA by approximately 50%,and re-duce some 20000 workforces.
文摘By Feng Shiliang of CPCIAIn August 2007,China’s petroleumand chemical industry remained arapid growth inproduction.Amongthe 65 petrochemical products thathave been tracked by CPCIA(ChinaPetroleum and Chemical IndustryAssociation),56 increased theiroutput compared with the sameperiod of 2006,and the output of39 products,in particular,grew byover 10%.The output of naturalgas,pure benzene and methanol in-creased rapidly.Local price ofchemicals showed a fiat increase.Among 159 chemicals recorded,77chemicals had higher prices thanthat in the preceding month.Dueto the implementation of the newexport rebate rates,the growth ofexport has decreased.
文摘Constant rise of oilprices in 20061.The output growth of crude oilpresents a declining trendThe output of crude oil in China in-creased again in 2006.It reached anall-time high monthly output of 15.736million tons in July 2006.Due to therestriction of resources,however,thegrowth of crude oil production
文摘Rapid growth of outputWith the considerable growth of the nationaleconomy in recent years,the demand forpolystyrene (PS) downstream products hasincreased drastically and the consumptionof PS has been greatly promoted.The aver-age annual growth of the PS output in Chinawas 17.1% from 2003 to 2008, the averageannual growth of the PS apparent consump-tion was 8.8%,the self-sufficiency rate in-creased constantly and market competitionwas fierce.China’s PS capacity was 5.66million t/a in 2008, output was only 4.
文摘Objective To study the expressions of heat shock protein 70 (HSP 70) and nuclear factor-kappa B(NF-κB) in the peripheral blood lymphocyte of chronic gastritis (CG) patients of Pi-Wei hygropyrexia syndrome (PWHS) and Pi-qi deficiency syndrome(PQDS),and to explore their correlation with Helicobacter pylori(Hp) infection.
