Jarosite and extracellular polymer substance generated during pure culture and bioleaching process have been widely accepted the main transformation of decreasing iron in the medium.In the present work,acidophilus bio...Jarosite and extracellular polymer substance generated during pure culture and bioleaching process have been widely accepted the main transformation of decreasing iron in the medium.In the present work,acidophilus bioleaching organisms Ferroplasma thermophilum,Leptospirillum ferriphilum and Acidithioobacillus ferrooxidans were cultured.It was found that they can live in low pH environment,and more than10particles in each cell intracellular nano-particles are synthesized in the cells.By analyzing the morphology and chemical composition of nano-particles,they were found to contain iron,and the three microorganisms belonged to high-yielding strains.The results show that the transformation of the decreasing iron ions is not only generating jarosite,but also taken into cells and synthesizing ferruginous nano-particles.展开更多
Eutectic orientation relationships(EORs) in an undercooled Ni-38 wt.%Si alloy were analyzed by electron backscatter diffraction. A total of seven EORs were identified, and three of them were found at the under-cooling...Eutectic orientation relationships(EORs) in an undercooled Ni-38 wt.%Si alloy were analyzed by electron backscatter diffraction. A total of seven EORs were identified, and three of them were found at the under-cooling degree ?T≈31 K. It is found that their orientations of the primary NiSi phase are same but the misorientation between the neighboring NiSi2 grains can be either 50° or 60°. The multiple EORs were ascribed to a possible change in the growth direction of the primary phase, the change of the primary phase from the NiSi phase to the NiSi2 phase, and the transition from coupled to uncoupled eutectic growth. The current work shows that epitaxial growth of the second eutectic phase on the primary eutectic phase can obey either a single EOR or multiple EORs, which is a unique phenomenon.展开更多
Present-day conditions of the Lake Kenon ecosystem are determined by a combination of natural and anthropogenic factors. We have estimated the effects of a complex of factors on the condition of the abiotic environmen...Present-day conditions of the Lake Kenon ecosystem are determined by a combination of natural and anthropogenic factors. We have estimated the effects of a complex of factors on the condition of the abiotic environment and on specific biological components in the lake ecosystem. Change in biogenic load has caused an increase in the role of phytoplankton in the general balance of organic matter during the high-water period. Charophytes are the main dominants of bottom vegetation. Anthropogenic load has caused a decrease in both fish species and fish capacity. The lake application as a water reservoir-cooler has influenced the average annual water mineralization （from 420 mg/L to 530.0 mg/L with a maximum 654 mg/L in 1993） and fluctuations in its hydrochemical composition. The present composition of the lake is sulfate-hydrocarbonate-chloride calcium-sodic-magnesium in character. S（Y44 content is twice as much as the maximum permissible concentration in fishery waters. Water drainage from an ash disposal area to the lake has caused an increase in chemical-element concentrations including the heavy metals. Hg concentration in Perca fluviatilis muscles is 0.5 9g/g dry wt. Thus, understanding directions in the ecosystem of the water reservoir-cooler under changing hydrological conditions will let us forecast the consequences of new combined heat and power plant operation.展开更多
Early studies had suggested that vitamin D intake was inversely associated with neurodegenerative diseases, such as Alzheimer＇s disease and multiple sclerosis. However, the associations of vitamin D intake and outdoo...Early studies had suggested that vitamin D intake was inversely associated with neurodegenerative diseases, such as Alzheimer＇s disease and multiple sclerosis. However, the associations of vitamin D intake and outdoor activities with Parkinson＇s disease（PD） are still unclear, so this study is to evaluate these relationships from a case-control study in elderly Chinese. The study population involved 209 cases with new onsets of PD and 210 controls without neurodegenerative diseases. The data on dietary vitamin D and outdoor activities were collected using a food-frequency questionnaire and self-report questionnaire. Multivariable logistic regressions were used to examine the associations between dietary outdoor activities, vitamin D intake and PD. Adjustment was made for sex, age, smoking, alcohol use, education, and body mass index（BMI）. Adjusted odds ratios（ORs） for PD in quartiles for outdoor physical activity were 1（reference）, 0.739（0.413, 1.321）, 0.501（0.282, 0.891）, and 0.437（0.241, 0.795）, respectively（P=0.002 for trend）. Adjusted ORs for PD in quartiles for total vitamin D intake were 1（reference）, 0.647（0.357, 1.170）, 0.571（0.318, 1.022）, and 0.538（0.301, 0.960）, respectively（P=0.011 for trend）. Our study suggested that outdoor activity and total vitamin D intake were inversely associated with PD, and outdoor activity seems to be more significantly associated with decreased risk for PD.展开更多
OBJECTIVE: The accumulation of extracellular matrix (ECM) is one of the main causes of renal fibrosis. Emerging evidence suggests that the metabolic enzyme of ECM is associated with renal fibrosis. In this study, we a...OBJECTIVE: The accumulation of extracellular matrix (ECM) is one of the main causes of renal fibrosis. Emerging evidence suggests that the metabolic enzyme of ECM is associated with renal fibrosis. In this study, we applied randomly controlled trial to check the curative effect of Chinese herbs on patients with immunoglobulin A nephropathy (IgAN). METHODS: Twenty-six patients were randomly divided into group A (control group) treated with Western Medicine and group B (treatment group) treated with combination of Traditional Chinese Medicine (TCM) and Western Medicine. Blood and urine tests were done before treatment and after 8-week treatment. RESULTS: The levels of the main composition of ex- tracellular matrix (MC-ECM), the metabolic enzyme of ECM (ME-ECM) and some cytokines in group B decreased more obviously than those in group A after 8-week treatment. So did the level of 24-hour urine protein. However, Metal matrix protease (MMP)-2 and vascular endothelial growth factor in group B increased more obviously than those in group A after 8-week treatment. No effects on the renal function were found in both groups. CONCLUSION: Our study provided important information on using the combination of TCM with Western Medicine to inhibit the progression of renal fibrosis in patients with IgAN.展开更多
基金Project(51374248)supported by the National Natural Science Foundation of ChinaProject(NCET-13-0595)supported by the Program for New Century Excellent Talents in University of China+1 种基金Project(2016-SSRF-PT-006152)supported by the Shanghai Synchrotron Radiation Facility(SSRF),ChinaProject(2016-BEPC-PT-000855)supported by the Beijing Synchrotron Radiation Facility(BSRF),China
文摘Jarosite and extracellular polymer substance generated during pure culture and bioleaching process have been widely accepted the main transformation of decreasing iron in the medium.In the present work,acidophilus bioleaching organisms Ferroplasma thermophilum,Leptospirillum ferriphilum and Acidithioobacillus ferrooxidans were cultured.It was found that they can live in low pH environment,and more than10particles in each cell intracellular nano-particles are synthesized in the cells.By analyzing the morphology and chemical composition of nano-particles,they were found to contain iron,and the three microorganisms belonged to high-yielding strains.The results show that the transformation of the decreasing iron ions is not only generating jarosite,but also taken into cells and synthesizing ferruginous nano-particles.
基金Project(2018-JC007)supported by the Science Fund for Distinguished Young Scholars from Shaanxi Province,ChinaProject(3102017HQZZ008)supported by the Fundamental Research Funds for the Central Universit ies,China。
文摘Eutectic orientation relationships(EORs) in an undercooled Ni-38 wt.%Si alloy were analyzed by electron backscatter diffraction. A total of seven EORs were identified, and three of them were found at the under-cooling degree ?T≈31 K. It is found that their orientations of the primary NiSi phase are same but the misorientation between the neighboring NiSi2 grains can be either 50° or 60°. The multiple EORs were ascribed to a possible change in the growth direction of the primary phase, the change of the primary phase from the NiSi phase to the NiSi2 phase, and the transition from coupled to uncoupled eutectic growth. The current work shows that epitaxial growth of the second eutectic phase on the primary eutectic phase can obey either a single EOR or multiple EORs, which is a unique phenomenon.
基金Supported by the RFBR No.14-05-98013"Siberia"(2014–2016)the Project of SB of the RAS VIII.79.1.2."Dynamics of natural and natural-anthropogenic systems in the conditions of climate change and anthropogenic pressures(on the example of Transbaikalia)"(2012–2017)
文摘Present-day conditions of the Lake Kenon ecosystem are determined by a combination of natural and anthropogenic factors. We have estimated the effects of a complex of factors on the condition of the abiotic environment and on specific biological components in the lake ecosystem. Change in biogenic load has caused an increase in the role of phytoplankton in the general balance of organic matter during the high-water period. Charophytes are the main dominants of bottom vegetation. Anthropogenic load has caused a decrease in both fish species and fish capacity. The lake application as a water reservoir-cooler has influenced the average annual water mineralization （from 420 mg/L to 530.0 mg/L with a maximum 654 mg/L in 1993） and fluctuations in its hydrochemical composition. The present composition of the lake is sulfate-hydrocarbonate-chloride calcium-sodic-magnesium in character. S（Y44 content is twice as much as the maximum permissible concentration in fishery waters. Water drainage from an ash disposal area to the lake has caused an increase in chemical-element concentrations including the heavy metals. Hg concentration in Perca fluviatilis muscles is 0.5 9g/g dry wt. Thus, understanding directions in the ecosystem of the water reservoir-cooler under changing hydrological conditions will let us forecast the consequences of new combined heat and power plant operation.
文摘Early studies had suggested that vitamin D intake was inversely associated with neurodegenerative diseases, such as Alzheimer＇s disease and multiple sclerosis. However, the associations of vitamin D intake and outdoor activities with Parkinson＇s disease（PD） are still unclear, so this study is to evaluate these relationships from a case-control study in elderly Chinese. The study population involved 209 cases with new onsets of PD and 210 controls without neurodegenerative diseases. The data on dietary vitamin D and outdoor activities were collected using a food-frequency questionnaire and self-report questionnaire. Multivariable logistic regressions were used to examine the associations between dietary outdoor activities, vitamin D intake and PD. Adjustment was made for sex, age, smoking, alcohol use, education, and body mass index（BMI）. Adjusted odds ratios（ORs） for PD in quartiles for outdoor physical activity were 1（reference）, 0.739（0.413, 1.321）, 0.501（0.282, 0.891）, and 0.437（0.241, 0.795）, respectively（P=0.002 for trend）. Adjusted ORs for PD in quartiles for total vitamin D intake were 1（reference）, 0.647（0.357, 1.170）, 0.571（0.318, 1.022）, and 0.538（0.301, 0.960）, respectively（P=0.011 for trend）. Our study suggested that outdoor activity and total vitamin D intake were inversely associated with PD, and outdoor activity seems to be more significantly associated with decreased risk for PD.
基金Supported by the Research Foundation in Combination of TCM with Western Medicine under the Natural Science Foundation of Suzhou Scitech Bureau (SYSD2011148)a Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)the grant from the emphasis course of study & "211" projectof Soochow University (No. 14317336)
文摘OBJECTIVE: The accumulation of extracellular matrix (ECM) is one of the main causes of renal fibrosis. Emerging evidence suggests that the metabolic enzyme of ECM is associated with renal fibrosis. In this study, we applied randomly controlled trial to check the curative effect of Chinese herbs on patients with immunoglobulin A nephropathy (IgAN). METHODS: Twenty-six patients were randomly divided into group A (control group) treated with Western Medicine and group B (treatment group) treated with combination of Traditional Chinese Medicine (TCM) and Western Medicine. Blood and urine tests were done before treatment and after 8-week treatment. RESULTS: The levels of the main composition of ex- tracellular matrix (MC-ECM), the metabolic enzyme of ECM (ME-ECM) and some cytokines in group B decreased more obviously than those in group A after 8-week treatment. So did the level of 24-hour urine protein. However, Metal matrix protease (MMP)-2 and vascular endothelial growth factor in group B increased more obviously than those in group A after 8-week treatment. No effects on the renal function were found in both groups. CONCLUSION: Our study provided important information on using the combination of TCM with Western Medicine to inhibit the progression of renal fibrosis in patients with IgAN.
