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78篇 您的检索式:作者名="LI Yigang"
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1On the timing and duration of the destruction of the North China Craton显示文摘The timing and duration of the destruction of the North China Craton, which is pivotal to understanding the destruction mechanism and its geodynamic controlling factors, still remain controversial. On the basis of the principles of magma genesis and evolution, first we outline magmatic expressions that can be related to cratonic destruction, then use magmatic and basin evolution trends to constrain the timescale of the lithospheric thinning in North China. The main conclusions include: (1) the thinning of the lithosphere beneath the North China Craton might have started, at least locally, since late Carboniferous-late Triassic, attained its climax during the late Jurassic-early Cretaceous, and continued till the end of late Cretaceous-early Cenozoic. The destruction of the North China Craton was a relatively slow, rather than a dramatic process. (2) The weakened lithospheric zones along the margins and interiors of the craton played an important role in cratonic destruction, partly accounting for the heterogeneous pattern of cratonic destruction. (3) The tectonic factors that controlled the destruction of the North China Craton may be multiple. The late Carboniferous southward subduction of the Paleo-Asian plate and the late Triassic collision between North China and South China may have re-activated the craton by influencing the thermal and integral structure of the craton. The Pacific subduction underneath the eastern Asian continent played a determinant role in the cratonic destruction, governing the distribution patterns of post-Mesozoic basins and major tectonic configuration, temporal change of magmatism and formation of the North-South gravity lineament.XU YiGang LI HongYan PANG ChongJin HE Bin 2009Chinese Science Bulletin2009,54,19:70
2Preparation and coagulation efficiency of polyaluminium ferric silicate chloride composite coagulant from wastewater of high-purity graphite production显示文摘The aim of the present work was to produce a polyaluminium ferric silicate chloride (PAFSiC) coagulant from acidic and alkaline wastewater of purifying graphite by roasting, and subsequently to evaluate coagulation efficiency of the reagent by treating surface water from the Yellow River as well as municipal wastewater in comparison with the conventional coagulant polyaluminium chloride (PAC). The PAFSiC coagulant was prepared by co-polymerization. The effects of (Al+Fe)/Si molar ratio, OH/(Al+Fe) molar ratio (i.e., γ value), coagulant dosage and pH value of test suspension on the coagulation behavior of FAFSiC and the stability of the PAFSiC were also examined. Results showed that PAFSiC performed more efficiently than PAC in removing turbidity, chemical oxygen demand (COD), and total phosphate (TP). The PAFSiC with a γ value of 2.0 and (Al+Fe)/Si ratio of 5 (PAFSiC 2.0/5) showed excellent coagulation effect for both turbidity and COD, while PAFSiC 1.0/5 was the best for TP. The optimum coagulation pH range of PAFSiC 2.0/5 was 5.0–9.0, slightly wider than that of PAC (6.0–8.0). The process can be easily incorporated into high-purity graphite production plants, thereby reducing wastewater pollution and producing a valuable coagulant.Xiaoxia Niu Xili Li Jihong Zhao Yigang Ren Yanqin Yang 2011Journal of Environmental Sciences2011,23,7:23
3Generation of Cenozoic intraplate basalts in the big mantle wedge under eastern Asia显示文摘The roles of subduction of the Pacific plate and the big mantle wedge(BMW) in the evolution of east Asian continental margin have attracted lots of attention in past years. This paper reviews recent progresses regarding the composition and chemical heterogeneity of the BMW beneath eastern Asia and geochemistry of Cenozoic basalts in the region, with attempts to put forward a general model accounting for the generation of intraplate magma in a BMW system. Some key points of this review are summarized in the following.(1) Cenozoic basalts from eastern China are interpreted as a mixture of high-Si melts and low-Si melts. Wherever they are from, northeast, north or south China, Cenozoic basalts share a common low-Si basalt endmember, which is characterized by high alkali, Fe_2O_3~T and TiO_2 contents, HIMU-like trace element composition and relatively low ^(206)Pb/^(204)Pb compared to classic HIMU basalts. Their Nd-Hf isotopic compositions resemble that of Pacific Mantle domain and their source is composed of carbonated eclogites and peridotites. The high-Si basalt endmember is characterized by low alkali, Fe_2O_3~T and TiO_2 contents, Indian Mantle-type Pb-Nd-Hf isotopic compositions, and a predominant garnet pyroxenitic source. High-Si basalts show isotopic provinciality, with those from North China and South China displaying EM1-type and EM2-type components, respectively, while basalts from Northeast China containing both EM1-and EM2-type components.(2) The source of Cenozoic basalts from eastern China contains abundant recycled materials, including oceanic crust and lithospheric mantle components as well as carbonate sediments and water. According to their spatial distribution and deep seismic tomography, it is inferred that the recycled components are mostly from stagnant slabs in the mantle transition zone,whereas EM1 and EM2 components are from the shallow mantle.(3) Comparison of solidi of garnet pyroxenite, carbonated eclogite and peridotite with regional geotherm constrains the initial melting depth of high-Si and low-Si basalts at <100 km and^300 km, respectively. It is suggested that the BMW under eastern Asia is vertically heterogeneous, with the upper part containing EM1 and EM2 components and isotopically resembling the Indian mantle domain, whereas the lower part containing components derived from the Pacific mantle domain. Contents of H_2O and CO_2 decrease gradually from bottom to top of the BMW.(4) Melting of the BMW to generate Cenozoic intraplate basalts is triggered by decarbonization and dehydration of the slabs stagnated in the mantle transition zone.Yigang XU Hongyan LI Lubing HONG Liang MA Qiang MA Mingdao SUN 2018Science China Earth Sciences2018,61,7:13
4Activation of northern margin of the North China Craton in Late Paleozoic:Evidence from U-Pb dating and Hf isotopes of detrital zircons from the Upper Carboniferous Taiyuan Formation in the Ningwu-Jingle basin显示文摘LA-MC-ICPMS U-Pb dating has been performed on detrital zircons from the Upper Carboniferous Tai-yuan Formation (N-8) in the Ningwu-Jingle Basin, west of the North China Craton (NCC). The ages of 72 detrital zircon grains are divided into three groups: 303―320 Ma (6 grains), 1631―2194 Ma (37 grains, peaked at 1850 Ma), 2318―2646 Ma (29 grains, peaked at 2500 Ma). Detrital zircons of Group 2 and Group 3 were likely derived from the basement of the NCC. Group 1 zircons exhibit 176Hf/177Hf ratios ranging from 0.281725 to 0.282239, with corresponding negative εHf(t) values of -12.4―-30.3 and old Hf model ages of 1.4―2.2 Ga. These characteristics show a strong resemblance to those of Carboniferous igneous zircons from the Inner Mongolia Paleo-uplift (IMPU) on the northern margin of the NCC, but differ significantly from those of the Xing-Meng Orogenic Belt, suggesting that the source of the Tai-yuan Formation partly came from the IMPU. All detrital zircons of Group 1 have relatively high Th/U ratios (> 0.67), indicating a magmatic origin. The mean age (304 ± 6 Ma) of the two youngest grains is close to the depositional age of the Taiyuan Formation, suggesting a strong tectonic uplift and magmatism in the IMPU during the Late Carboniferous. This paper provides important geological evidence for the activation of the northern margin of the NCC in the Late Paleozoic.LI HongYan XU YiGang HUANG XiaoLong HE Bin LUO ZhenYu YAN Bin 2009Chinese Science Bulletin2009,54,4:12
5Classification of the Gut Microbiota of Patients in Intensive Care Units During Development of Sepsis and Septic Shock显示文摘The gut microbiota of intensive care unit(ICU)patients displays extreme dysbiosis associated with increased susceptibility to organ failure,sepsis,and septic shock.However,such dysbiosis is difficult to characterize owing to the high dimensional complexity of the gut microbiota.We tested whether the concept of enterotype can be applied to the gut microbiota of ICU patients to describe the dysbiosis.We collected 131 fecal samples from 64 ICU patients diagnosed with sepsis or septic shock and performed 16S rRNA gene sequencing to dissect their gut microbiota compositions.During the development of sepsis or septic shock and during various medical treatments,the ICU patients always exhibited two dysbiotic microbiota patterns,or ICU-enterotypes,which could not be explained by host properties such as age,sex,and body mass index,or external stressors such as infection site and antibiotic use.ICU-enterotype I(ICU E1)comprised predominantly Bacteroides and an unclassified genus of Enterobacteriaceae,while ICU-enterotype II(ICU E2)comprised predominantly Enterococcus.Among more critically ill patients with Acute Physiology and Chronic Health Evaluation II(APACHE II)scores>18,septic shock was more likely to occur with ICU E1(P=0.041).Additionally,ICU E1 was correlated with high serum lactate levels(P=0.007).Therefore,different patterns of dysbiosis were correlated with different clinical outcomes,suggesting that ICU-enterotypes should be diagnosed as independent clinical indices.Thus,the microbial-based human index classifier we propose is precise and effective for timely monitoring of ICU-enterotypes of individual patients.This work is a first step toward precision medicine for septic patients based on their gut microbiota profiles.Wanglin Liu Mingyue Cheng Jinman Li Peng Zhang Hang Fan Qinghe Hu Maozhen Han Longxiang Su Huaiwu He Yigang Tong Kang Ning Yun Long 2020Genomics, Proteomics & Bioinformatics2020,18,6:7
6Clinical characteristics and changes in living quality of patients with radiation encephalopathy induced by radiation therapy for treating nasopharyngeal carcinoma显示文摘BACKGROUND: Radiation encephalopathy (RE) caused by radiation therapy of nasopharyngeal carcinoma severely influences patients' quality of life (QOL). The factors, which influence such patients' QOL, have not been confirmed. OBJECTIVE: To observe the clinical and imageological characteristics of patients with radiation therapy of nasopharyngeal carcinoma-induced RE and the changes in QOL, and analyze QOL influencing factors. DESIGN: Retrospective case analysis. SETTING: Department of Neurology, the Second Affiliated Hospital of Sun Yat-sen University. PARTICIPANTS: Eighty-nine inpatients or outpatients with RE induced by radiation therapy of nasopharyngeal carcinoma admitted to Sun Yat-sen University Cancer Center and Department of Neurology, the Second Affiliated Hospital of Sun Yat-sen University from March 1994 to August 2004 were involved in this experiment. They all met the diagnosis criteria of RE from MERRITT'S neurology (10th edition). Thirty-three involved patients were randomly chosen as RE group. Another 34 concurrent inpatients or outpatients with nasopharyngeal carcinoma who received radiation therapy but without RE were chosen as control group. Informed consents of detected items were obtained from all the involved subjects. METHODS: ① Patients were evaluated when they were followed up. The World Health Organization Quality of Life Questionnaire abbreviated version (WHOQOL-BREF) was used for on-the-spot evaluation. High points of WHOQOL-BREF indicated better QOL. The Late Effects on Normal Tissues - Subjective, Objective, Management and Analytic (LENT-SOMA) scale for evaluating radiation injury was used to evaluate headache and neurologic disorder of patients with RE induced by radiation therapy of nasopharyngeal carcinoma. The evaluation was graded into 5 degrees. High degrees indicted severer clinical symptoms. ② Disease latency (i.e. time interval from symptoms and body signs appearing or radiation therapy ending to onset), initial symptoms, common symptoms, imageological characteristics, QOL and other related factors of patients were recorded. ③ Statistical management was carried out with SPSS 10.0 software. MAIN OUTCOME MEASURES: QOL and clinical characteristics of patients with RE induced by radiation therapy of nasopharyngeal carcinoma as well as QOL influencing factors. RESULTS: All the involved subjects participated in the final analysis. ① Disease latency of patients with RE ranged from 0 to 24 years, and 95% confidence interval was 0 to 15 years. There were significant differences in amount of invaded cases between 6 months after one radiation therapy and 6 months after two or more radiation therapies (χ2=36.76,P < 0.01). ② The common initial symptom of patients with RE was glossopharyngeal paralysis (33 cases, 37%). ③ The first 3 common symptoms of patients with RE were glossopharyngeal paralysis (52 cases, 58%), limb inertia and sensory disorder (25 cases, 28%) and headache (25 cases, 28%).④Imageology of patients with RE was characterized by long T1 and T2 signal shadow on magnetic resonance. ⑤Total scores of health, of daily life and of social relationship, measured with WHOQOL-BREF, of patients in RE group were significantly lower than those in the control group, respectively [(2.06±0.86)points vs. (2.59±0.66)points; (2.45±0.75)points vs. (2.91±0.75)points; (51.67±15.24) points vs. (59.22±13.03)points, P < 0.05]. Patients undergoing two or more radiation therapies were inferior to those undergoing one radiation therapy in total scores of health, and of daily life, scores of physiology, and of psychology (P < 0.05). ⑥Glossopharyngeal paralysis was negatively correlated with scores of psychology, total scores of daily life and of health in WHOQOL-BREF (P < 0.05); Head was negatively correlated with scores of psychology in WHOQOL-BREF (P < 0.05); Neurologic deficit wasnegatively correlated with scores of psychology, and total scores of health in WHOQOL-BREF (P < 0.05). CONCLUSION: ①The latency of RE of patients undergoing two or more radiation therapies is remarkably shortened, and QOL is decreased, but there is no difference in QOL between two genders. ② Brain edema is common in imageology of RE after radiation therapy. The first 3 ones of initial symptoms and common symptoms both are glossopharyngeal paralysis, neurologic deficit and headache, which greatly negatively influence QOL of patients.Yamei Tang Yi Li Fusheng Zhang Yunlin Liu Haihong Zhou Jianhong Ye Yigang Xing 2007Neural Regeneration Research2007,2,2:5
7Evaluating the improvement effect of low-energy strategies on the summer indoor thermal environment and cooling energy consumption in a library building:A case study in a hot-humid and less-windy city of China显示文摘Public buildings such as libraries consume a vast amount of cooling energy for maintaining a comfortable and stable indoor environment in summer,especially in the hot-humid climate.This study used a case study approach to discuss the effect of low-energy strategies that can be applied to improve indoor thermal environment and cooling energy consumption of library buildings in hot and humid cities like Nanning City(a southern city,China).The use of cooling window shutters(a shutter with the effects of shading and evaporative cooling)and ceiling fans for generating airflow was considered as applicable energy-saving measures in this study,and a university library was selected as the study building in which the two energy-saving measures were employed.The SET*and annual cooling load before and after the adoption of the proposed measures were quantitatively investigated with a building energy consumption simulation software(DesignBuilder).Simulation results showed that the daytime SET*values can be reduced by 3.0℃and 4.5℃respectively on a typical summer day after the use of the cooling shutters and ceiling fans.Moreover,the cooling loads can also be decreased by 8.4%and 16.6%respectively.Particularly,the combination of these two measures enabled the daytime SET*value and annual cooling load lower by 7.0℃and 60.8%respectively.Yigang Li Jiang He 2021Building Simulation2021,14,5:5
8Using Geochemistry of Rare Earth Elements to Indicate Sediment Provenance of Sand Ridges in Southwestern Yellow Sea显示文摘The Jianggang Harbour-centered radial sand ridge(RSR) is the largest sand body in the Yellow Sea. Its formation and evolution are of interest for scientists of various fields; however, the sediment provenance is uncertain. In this study, rare earth element(REE) geochemical compositions of the RSR sediments together with their potential sources are investigated to identify the provenance of the RSR sediments. The typical parameters((La/Yb)_N,(La/Sm)_N and(Gd/Yb)_N) as well as the upper continental crust-normalized patterns of REEs can only be associated with source rocks, and thus can be used as effective tracers for the origin and sources of sediments. However, the REE contents of sediments are affected by many factors, such as particle sorting and chemical weathering. Onshore RSR sediments are different in REE geochemical composition from offshore RSR sediments to some extent, suggesting that not all of the offshore RSR sediments have the same sources as the onshore RSR sediments. Meanwhile, the sediments adjacent to the northeast of Cheju Island and at Lian Island near the Lianyun Harbour were not the source of the RSR sediments due to their distinctive REE patterns, dEu,(La/Yb)_N,(Gd/Yb)_N and(La/Sm)_N. The Korean river sediments could be dispersed to the Jiangsu Coast slightly impacting the fine fractions of the RSR sediments, particularly the offshore RSR sediments. Additionally, geochemical comparisons show that the modern Yellow River was responsible for the onshore RSR sediments, whereas the sediment loads from the Yangtze River could serve as a major contributor to the RSR, particularly the offshore RSR. In addition, the offshore RSR could also be partly fed by an unknown source due to some high values of(La/Yb)_N,(La/Sm)_N and La contents differing from those of the Chinese and Korean river sediments.LI Lei SU Jinbao RAO Wenbo WANG Yigang 2017Chinese Geographical Science2017,27,1:4
9An Adaptive SVD Method for Solving the Pass-Region Problem in S-Transform Time-Frequency Filters显示文摘S-transform(ST) is an excellent tool for time-frequency filter. There are two factors that influence filtering performance: Inverse s-transform(IST) algorithms and the pass-regions in time-frequency domain. A novel matrix IST algorithm is derived and an adaptive Singular value decomposition(SVD) method for solving the pass-region problem is proposed. The former can avoid reconstructing errors in time-frequency filtering; the latter is effective to distinguish the pass-region of signal from noise.Filter can be realized by removing the smaller singular values and keeping the larger singular values. An additive noise perturbation model is built in ST time-frequency domain and the effective rank of noise perturbation model based on matrix IST is analyzed. Simulation results indicate that the proposed SVD method can provide higher precision than the existing ones at low signal-to-noise ratio and does not need to compute the noise statistics property.Illustrative examples verify the effectiveness of proposed method.YIN Baiqiang HE Yigang LI Bing ZUO Lei YUAN Lifen 2015Chinese Journal of Electronics2015,24,1:4
10High-throughput sequencing exclusively identified a novel Torque teno virus genotype in serum of a patient with fatal fever显示文摘Torque teno virus(TTV) has been found to be prevalent world-wide in healthy populations and in patients with various diseases, but its etiological role has not yet been determined. Using high-throughput unbiased sequencing to screen for viruses in the serum of a patient with persistent high fever who died of suspected viral infection and prolonged weakness, we identified the complete genome sequence of a TTV(isolate Hebei-1). The genome of TTV-Hebei-1 is 3649 bp in length, encoding four putative open reading frames, and it has a G+C content of 49%. Genomic comparison and a BLASTN search revealed that the assembled genome of TTV-Hebei-1 represented a novel isolate, with a genome sequence that was highly heterologous to the sequences of other reported TTV strains. A phylogenetic tree constructed using the complete genome sequence showed that TTV-Hebei-1 and an uncharacterized Taiwan Residents strain, TW53A37, constitute a new TTV genotype. The patient was strongly suspected of carrying a viral infection and died eventually without any other possible causes being apparent. No virus other than the novel TTV was identified in his serum sample. Although a direct causal link between the novel TTV genotype infection and the patient's disease could not be confirmed, the findings suggest that surveillance of this novel TTV genotype is necessary and that its role in disease deserves to be explored.Zhiqiang Mi Xin Yuan Guangqian Pei Wei Wang Xiaoping An Zhiyi Zhang Yong Huang Fan Peng Shasha Li Changqing Bai Yigang Tong 2014Virologica Sinica2014,29,2:4
11The effects of extreme rainfall events on carbon release from biological soil crusts covered soil in fixed sand dunes in the Tengger Desert, northern China显示文摘In May to August of 2011, we assessed the effects of extreme rainfall (quantity and intensity) events on the carbon release from soils covered by different types of biological soil crusts (BSCs) in fixed sand dunes in the Tengger Desert, northern China. A Li-6400-09 Soil Chamber was used to measure the respiration rates of the BSCs immediately after the rainfall stopped, and continued until the respiration rates of the BSCs returned to the pre-rainfall basal rate. Our results showed that almost immediately after extreme rainfall events the respiration rates of algae crust and mixed crust were significantly inhibited, but moss crust was not significantly affected. The respiration rates of algae crust, mixed crust, and moss crust in extreme rainfall quantity and intensity events were, respectively, 0.12 and 0.41 μmolCO 2 /(m 2 ·s), 0.10 and 0.45 μmolCO 2 /(m 2 ·s), 0.83 and 1.69 μmolCO 2 /(m 2 ·s). Our study indicated that moss crust in the advanced succession stage can well adapt to extreme rainfall events in the short term.Yang Zhao XinRong Li ZhiShan Zhang RongLiang Jia YiGang Hu Peng Zhang 2013Research in Cold and Arid Regions2013,5,2:4
12A novel mosquito-borne reassortant orbivirus isolated from Xishuangbanna,China显示文摘Dear Editor,The genus Orbivirus,within the family Reoviridae,includes 22 virus species(King et al.,2011).They are distributed globally,but are particularly prevalent in Europe,Asia,and Africa.In addition,they can be transmitted by ticks or other hematophagous insect vectors,including Culicoides,mosquitoes,and sandflies(Belaga-Shaozhen Xing Xiaofang Guo Xianglilan Zhang Qiumin Zhao Lingli Li Shuqing Zuo Xiaoping An Guangqian Pei Qiang Sun Shi Cheng Yunfei Wang Hang Fan Zhiqiang Mi Yong Huang Zhiyi Zhang Hongning Zhou Jiusong Zhang Yigang Tong 2017Virologica Sinica2017,32,2:4
13Development of Solar Spectroradiometer for Meteorological Observation显示文摘A newgeneration of solar spectroradiometer has been developed by CUST/JRSI to improve solarirradiance observation data under hyperspectral resolution. It is based on the grating spectroradiometer with a back-thinned CCD linear image sensor and is operated in a hermetically sealed enclosure. The solar spectroradiometer is designed to measure the solar spectral irradiance from300 nm to 1100 nm wavelength range with the spectral resolution of 2 nm( the full width at half maximum). The optical bench is optimized to minimize stray light. The Peltier device is used to stabilize the temperature of CCD sensor to 25℃,while the change of temperature of CCD sensor is controlled to ±1℃ by the dedicated Peltier driver and control circuit.Liu Liying Zheng Feng Zhang Guoyu Xu Yigang Yang Liyan Lyu Wenhua Bian Zeqiang Chong Wei Li Ye 2017Instrumentation2017,4,1:3
14Identification of Histoplasma causing an unexplained disease cluster in Matthews Ridge, Guyana显示文摘Here,we report the identification of Histoplasma causing an unexplained disease cluster in Matthews Ridge,Guyana.In March 2019,14 employees of Chongqing Bosai Mining Company,China,working in a manganese mining of Guyana,had unexplained fever,and two of them died.We obtained lung and brain tissues as well as the blood samples from the two deceased cases(patient No.1 and 2),and bronchoscopy lavages and cerebrospinal fluid samples from one severe case(patient No.3),respectively.All samples were tested by pathological examination,high-throughput sequencing,and real-time PCR.Pathological detection showed the presence of spore-like structures in the lung tissue of patient No.1,indicating a fungal infection in this patient.Nanopore sequencing identified the existing of H.capsulatum in the lung tissue sample within 13 h.Next-generation sequencing identified specific fragments of H.capsulatum in all of the samples tested(lung,brain and blood serum from the deceased cases,and plasma from the severe case).Real-time PCR assays did not reveal any viral infection related to transmission from bat feces.We conclude that H.capsulatum was the causative pathogen of this disease cluster based on epidemiologic,clinical,pathological and nucleic acid evidence.Ji Wang Weimin Zhou Hua Ling Xiaoping Dong Yi Zhang Jiandong Li Yong Zhang Jingdong Song William J.Liu Yang Li Ruiqing Zhang Wei Zhen Kun Cai Shuangli Zhu Dongyan Wang Jinbo Xiao Yigang Tong Wenli Liu Lihua Song Wei Wu Yang Liu Xiang Zhao Ruihuan Wang Sheng Ye Jing Wang Roujian Lu Baoying Huang Fei Ye Wenwen Lei Rongbao Gao Qi Shi Cao Chen Jun Han Wenbo Xu George F.Gao Xuejun Ma Guizhen Wu 2019Biosafety and Health2019,1,3:3
15Critical discharge at Datong for controlling operation of South-to-North Water Transfer Project in dry seasons显示文摘Previous research shows that there is a strong correlation between saltwater intrusion in the Yangtze Estuary and discharge at Datong. In the near future, the discharge of the Yangtze River during dry seasons will decrease due to the construction and operation of large water diversion projects, including the South-to-North Water Transfer Project, which will further exacerbate saltwater intrusion in the estuary. In this paper, a nested 1D river network model and a 2D saltwater numerical model are used to associate saltwater intrusion in the Yangtze Estuary with different values of discharge at Datong. It is concluded that 13 000 m3/s is the critical discharge at Datong for preventing saltwater intrusion and controlling the volume of water transferred by the South-to-North Water Transfer Project. Furthermore, based on the analysis of river discharge from Datong to Xuliujing and in consideration of the influence of all of the water diversion projects, operation schemes are proposed for the Eastern Route of the South-to-North Water Transfer Project for different hydrological years.Wang Yigang Huang Huiming Li Xi 2008Water Science and Engineering2008,1,2:3
16Low molecular weight heparin reduces arterial blood lactic acid content and increases estimated glomerular filtration rate in patients with moderate Covid-19 pneumonia显示文摘Background:Coronavirus disease 2019(Covid-19)remains a serious health threat worldwide.We aimed to investigate whether low molecular weight heparin(LMWH)can promote organ function recovery in moderate Covid-19 pneumonia patients.Methods:We initiated an LMWH protocol in Covid-19 patients with increased D-dimer,body mass index>30 kg/m^(2) or a history of diabetes from January 18,2020 at Shanghai Public Health Clinical Center.In this retrospective study,we assigned moderate Covid-19 pneumonia patients admitted between January 18th and April 18,2020 receiving the LMWH protocol to the LMWH group.Moderate patients who met the inclusion criteria but did not receive LMWH protocol were included in the control group by 1:2 propensity score matching.General clinical information,indicators for renal function,arterial blood gas analyses,arterial blood lactic acid content(mmol/L),and coagulation indexes at 0 day,3 days,7 days,and 11 days after admission were recorded and compared between the two groups.Results:There were 41 patients in the LMWH group and 82 patients in the control group.General information in both groups were similar.Compared to the control group,the arterial blood lactic acid content(mmol/L)at day 11(1.3[1.1,1.7]vs.1.2[0.9,1.3],P=0.016)was reduced in the LMWH group.The estimated glomerular filtration rate(eGFR)in the LMWH group was higher than that in the control group at day 7(108.54[89.11,128.17]vs.116.85[103.39,133.47],P=0.039)and day 11(113.74[94.49,126.34]vs.128.31[112.75,144.12],P=0.003).The serum creatinine levels(Scr)in the LMWH group were lower than that in the control group at day 7(62.13[51.47,77.64]vs.55.49[49.50,65.75],P=0.038)and day 11(63.35[50.17,75.73]vs.51.62[44.62,61.24],P=0.005).Conclusions:LMWH treatment can reduce arterial blood lactic acid levels and improve eGFR in moderate Covid-19 pneumonia patients.Randomized controlled trials are warranted to further investigate this issue.Li Ma Yigang Zeng Bing ZhaoL ili Xu Jian Li Tongyu Zhu Enqiang Mao 2022Chinese Medical Journal2022,,6:3
17Monte-Carlo simulation of cement neutron field distribution characteristics in PGNAA显示文摘The distribution characteristics of the neutron field in cement was simulated using the MCNP code to comply with the requirements of an online Prompt Gamma Neutron Activation Analysis system.Simulation results showed that the neutron relative flux proportion reduced with increasing cement thickness.When the cement thickness remains unchanged,the reduced proportion of thermal neutrons increases to a small extent,but the epithermal, intermediate,and fast neutrons will decrease according to the geometric progression.H element in the cement mainly affects the reduction of fast neutrons and other single-substance elements,e.g.,O,Ca,56Fe,Si,and Al.It also slows down the reduction of the fast neutrons via inelastic scattering.O contributes more than other elements in the reduction of fast neutrons.Changing the H content affects the thermal,epithermal,intermediate,and fast neutrons, while changing the Ca,Fe,and Si contents only influences the thermal,epithermal,and intermediate neutrons;hence, there is little effect on the reduction of fast neutrons.YANG Jianbo YANG Yigang LI Yuanjing TUO Xianguo LI Zhe LIU Mingzhe CHENG Yi MU Keliang WANG Lei 2012Nuclear Science and Techniques2012,23,6:3
18Allogeneic hematopoietic stem cell transplantation for patients with acute leukemia显示文摘Objective: The purposes of this study were to assess the efficacy of allogeneic hematopoietic stem cell transplantation (HSCT) for acute leukemia (AL) and analyze the factors affecting the prognosis of these patients. Methods: The clinical and follow-up data of 93 AL patients (median age, 30 years) undergoing allogeneic HSCT in Xiangya Hospital over the past 12 years were collected, and the potential factors affecting the efficacy and prognosis of allogeneic HSCT patients were determined. Results: Hematopoietic reconstitution was achieved in 90 patients. At the last follow-up, the incidences of severe acute graft versus host disease (aGvHD) and extensive chronic GvHD (cGvHD) were 14.0% and 20.0%, the 3-year cumulative incidence of transplantation related mortality (TRM) and relapse rate were 16.8%±6.1% and 21.3%±6.7%, and the estimated 3-year overall survival (OS) and disease-free survival (DFS) of the patients were 64.6%±5.4% and 56.5%±5.5%, respectively. Univariate analysis indicated that age older than 40 years, HLA mismatch, and severe lung infection within the first 100 days after transplantation were risk factors for severe aGvHD, age older than 40 years, HLA mismatch, severe lung infection within the first 100 days after transplantation, and severe aGvHD were risk factors for TRM, high-risk AL and lack of cGvHD were risk factors for relapse (all P<0.05). Survival estimation showed that HLA mismatch, severe lung infection occurring within the first 100 days post-transplantation, high-risk AL severe aGvHD and lack of cGvHD were risk factors associated with poor prognosis (all P<0.05). Further multivariate analyses revealed that severe lung infection within the first 100 days post-transplantation, severe aGvHD and lack of cGvHD were independent risk factors for unfavorable outcomes (all P<0.05). Conclusions: Allogeneic HSCT can improve the DFS of AL patients, and severe lung infection within the first 100 days post-transplantation, severe aGvHD and lack of cGvHD are independent risk factors affecting the prognosis.Yan Chen Yajing Xu Gan Fu Yi Liu Jie Peng Bin Fu Xiaoyu Yuan Hongya Xin Yan Zhu Qun He Dengshu Wu Yigang Shu Xiaolin Li Xielan Zhao Fangping Chen 2013Chinese Journal of Cancer Research2013,25,4:3
19Comparative study on the weight loss and lipid metabolism by tea polyphenols in diet induced obese C57BL/6J pseudo germ free and conventionalized mice显示文摘The role of gut microbiota in terms of host health is becoming increasingly important.In this study,the comparative effects of tea polyphenols(TPs)on weight loss and lipid metabolism on conventionalized mice(CVZ)and pseudo germ-free(PGF)mice(treated with antibiotics)were investigated.Our findings revealed that high fat(HF)diet considerably increased the body weight,total fat and upsurge lipid indices in CVZ mice but PGF mice were not sensitive to the effect of HF diet as CVZ mice.After the dietary administration of TP,body weight,perirenal fat and epididymal fat,liver weight,glucose(GLU)level,total chloestrol(TC level),high density lipoprotein-cholesterol(HDL-C)level significantly lowered in PGF mice as compared to CVZ mice group.However,the area of fat cells and triglyceride(TG)level were significantly increased in PGF mice.In CVZ mice,TP intervention resulted in a considerable drop in the Firmicutes/Bacteroides ratio as compared to PGF mice.The intestinal flora of PGF mice was severely reduced after antibiotic treatment,while TP administration restored intestinal diversity;the abundance of Akkermansia and Lactobacillus increased,whereas the abundance of Enterobacteriaceae and Prevotella reduced.Overall,we can assume that PGF obese mice administered with TP have less anti-obesity effects compared to obese CVZ mice.Kashif Hussain Yingying Yang Jie Wang Hengjuan Bian Xi Lei Junjie Chen Qianying Li Li Wang Qingping Zhong Xiang Fang Yutao Wang Hong Wei Yigang Tong Zhenlin Liao 2022Food Science and Human Wellness2022,11,3:2
20Isolation and rapid genetic characterization of a novel T4-like bacteriophage显示文摘无所不在在地球上,抗菌素是在每个生态系统,而是他们的人的知识的最丰富的实体仍然关于有机体的另外的形式与那相比被限制。充实人的知识并且支持抗菌素的利用,孤立并且描绘尽可能许多不同抗菌素是必要的。这里,我们为它的基因描述描述象 T4 一样抗菌素 IME08 和一个快速的方法的隔离。与这个方法,我们容易克隆抗菌素染色体的一些随机的碎片。这些随机的克隆的顺序分析证明抗菌素 IME08 与象 T4 一样 Enterobacteria 分享了最高的顺序类似噬菌体 T4 (94% 身份) , JS98 (95% 身份) , JS10 (95% 身份) 和 RB14 (94% 身份) 分别地,它建议 IME08 属于象 T4 一样抗菌素类。Wang Sheng Jiang Huanhuan Chen Jiankui Liu Dabin Li Cun Pan Bo An Xiaoping Zhang Xin Zhou Yusen Tong Yigang 2010Journal of Medical Colleges of PLA(China)2010,25,6:2
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