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Geochemistry and petrogenesis of Rajahmundry trap basalts of Krishna-Godavari Basin,India

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Geoscience Frontiers 2015年第3期6卷 437-451页

作者： C.Manikyamba Sohini Ganguly M.Santosh Abhishek Saha G.Lakshminarayana CSIR-National Geophysical Research institute Department of Geology University of Calcutta School of Earth Sciences and Resources China University of Geosciences midwest Group Banjara Hills

The Rajahmundry Trap Basalts （RTB） are erupted through fault-controlled fissures in the Krishna-Godavari Basin （K-G Basin） of Godavari Triple Junction, occurring as a unique outcrop sandwiched between Cretaceous and Tertiary sediments along the east coast of India. Detailed geochemical studies have revealed that RTB are mid-Ti （1.74-1.92） to high-Ti （2.04-2.81） basalts with a distinct quartz tholeiitic parentage. MgO （6.2-13.12 wt.%）, Mg# （29-50） and Zr （109-202 ppm） suggest that these basalts evolved by fractional crystallization during the ascent of the parent magma along deep-seated fractures. Mod- erate to high fractionation of HREE, as indicated by （Gd/Yb）N ratios （1.71-2.31） of RTB, suggest their generation through 3-5% melting of a Fe-rich mantle corresponding to the stability fields of spinel and garnet peridotite at depths of 60-100 km. Low K2O/P2O5 （0.26-1.26）, high TiO2/P2O5 （6.74-16.79）, La/Nb （0.89-1.45）, Nb/Th 〉 8 （8.35-13）, negative anomalies at Rb reflect minimum contamination by granitic continental crust. （Nb/La）PM ratios （0.66-1.1） of RTB are attributed to endogenic contamination resulted through recycling of subducted oceanic slab into the mantle. Pronounced Ba enrichment with relative depletion in Rb indicates assimilation of Infra- and Inter-trappean sediments of estuarine to shallow marine character. Geochemical compositions such as A1203/TiO2 （3.88-6.83）, medium to high TiO2 （1.74 -2.81 wt.%）, positive Nb anomalies and LREE enrichment of these RTB attest to their mantle plume origin and indicate the generation of parent magma from a plume-related enriched mantle source with EM 1 signature. Ba/Th （46-247）, Ba/La （3.96-28.51） and Th/Nb （0.08-0.13） ratios suggest that the source enrichment process was marked by recycling of subduction-processed oceanic crust and lithospheric components into the mantle. Zr/Hf （37-41） and Zr/Ba （0.51-3.24） indicate involvement of an asthenospheric mantle source. The Rajahmundry basalts show affinity towards FOZO （

关键词： Rajahmundry Trap Basalts (RTB) Fault-controlled fissures Fractional crystallization Enriched mantle source Plume-lithosphere interaction

Participation of large-scale wind power generation in power system frequency regulation

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Chinese Science Bulletin 2013年第36期58卷 4557-4565页

作者： SUN HaiShun LIU Ju WEN JinYu CHENG ShiJie LUO Cheng YAO LiangZhong State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic EngineeringHuazhong University of Science and Technology midwest Independent Transmission System Operator Inc. China Electric Power Research institute

The initiative participation of wind power generators in power system frequency regulation is an inevitable demand to ensure power system safe operation with large-scale wind power ***,it is principally difficult for conventional wind turbines to participate in power system frequency *** this reason,solution to this problem is becoming a hot topic in the current *** paper systematically reviews the relevant research progresses in the control strategies and the capability assessment of using wind power generators in the power system frequency regulation,including the comparing among the emulating inertia control,the droop control,the rotor speed control,the pitch angle control and the coordinated ***,future research in this area is pointed out in the paper.

关键词：风力发电机电力系统频率调节控制策略风力涡轮机安全运行惯性控制转速控制

Ceruloplasmin levels in human sera from various diseases and their correlation with patient’s age and gender

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Health 2009年第2期1卷 104-110页

作者： Viorica Lopez-Avila William H. Robinson Kirk Lokits Agilent Technologies Stanford University University of Cincinnati midwest Research institute

Ceruloplasmin (Cp), a copper metalloprotein in human serum has been a valuable diagnostic marker in Wilson’s disease where Cp levels tend to be low while high levels in serum were asso-ciated with myocardial infarction, neoplastic and inflammatory conditions. There is no stan-dardized reference method for Cp and current immunologic and bichromatic assays have a number of drawbacks. The method described here uses immunoaffinity chromatography to remove six of the most abundant proteins from a serum sample and high-pressure liquid chro- matography (HPLC) with a size-exclusion col-umn to separate Cp from other serum proteins and any free Cu prior to analysis of 63Cu and 65Cu by inductively-coupled plasma mass spec-trometry (ICPMS). Identification of Cp is based on retention time match of the unknown protein in the serum sample with the Cp external stan-dard and the presence of 63Cu and 65Cu at a ratio of 2.2 ± 0.1. The method accuracy, as estab-lished independently by two of the authors with a reference serum certified for Cp, is 98 to 101% and the coefficient of variation is 6.4% and 5.4%, respectively. The assay was used to analyze a total of 167 human sera for Cp from patients with myocardial infarction (MI), pulmonary em-bolism (PE), rheumatoid arthritis (RA), systemic lupus erythematosus (SLE), other forms of ar-thritis, and a set of healthy patients as normal controls (NC). Our data show that Cp concen-trations tend to be higher in MI, RA, and SLE patients, higher in female as compared to male patients, and we did not observe a correlation between Cp concentration and patient’s age for the set of 70 patients for which we had gender and age information.

关键词： Ceruloplasmin HPLC-ICPMS Immu-noaffinity Chromatography

Bredemeyera floribunda Wild Elemental Content and Comparison with Nutritional Recommendation for Adults:Medicinal Plant Used by the Brazilian Rural Population to Treat Fatigue and Exhaustion

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American Journal of Plant Sciences 2020年第3期11卷 323-343页

作者： Paula Fabiana Saldanha Tschinkel Elaine Silva de Padua Melo Daniela Granja Arakaki Valdir Aragao do Nascimento Melina Ribeiro Fernandes Nayara Vieira Lima Luana Carolina Santos Leite Hugo Santos Pereira Kassia Roberta Nogueira da Silva Francisco Jose Mendes dos Reis Valter Aragao do Nascimento Group of Spectroscopy and Bioinformatics Applied to biodiversity and Health School of MedicinePostgraduation Program in Health and Development in the Midwest RegionFederal University of Mato Grosso do SulSchool of MedicineCampo GrandeBrazil institute of Chemistry of the Federal University of Mato Grosso do Sul Campo GrandeBrazil

Bredemeyera floribunda Wild (Polygalaceae), also known as pau-de-ovo is a medicinal plant used to treat snakebites, as tonic and fortifiers to treat fatigue and exhaustion. The aim of the present study was to document the knowledge of herbal sellers in the preparation of the so-called “B. floribunda fortifier” and to compare the plant root content with the recommended nutritional values and the permitted limit for medicinal plants. The study revealed that, unlike other regions of Brazil, in the midwest region, the root of the plant is used as food to treat fatigue and exhaustion. The contents in B. floribunda root decreased in the following order: Ca > K > P > Na > Fe > Mg > Si > Mn > Zn > Cu. Daily intake of 30 grams of B. floribunda roots are considered as an excellent source of Cr, Cu, Mn and Se for people 19 to 50 years of age according to the RDA. In addition, Cu and Fe showed content above the established limit for medicinal plants stipulated by other countries. The root of the plant has low K, Mg, P, Na and Zn content. When the contents in roots of the plant are below the oral dose of reference, consumption of this plant can be considered safe and without risk to human health. On the other hand, concentration of elements such as Cu, Fe, Ni, Al, Cr and Se exceeding the allowable limit may cause serious health problems due to prolonged ingestion and large amounts consumed daily. The Brazilian legislation does not establish a permissible limit of macro- and micro-elements in medicinal plants;thus, the results presented in this study will contribute to the Brazilian public health policy on medicinal plants.

关键词： Macroelements Microelements Bredemeyera floribunda Wild Pau-De-Ovo ICP OES

固体润滑透平轴承第三部分:在316℃下与陶瓷对摩的复合材料的发展

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固体润滑 1990年第4期10卷 296-303页

作者： M.N.Gardos P.Sutor 聂明德 Hughes Aircraft Company E1 Segundo Califoruia 90245 midwest Research institute Kansas City Missouri 64110

将以前与M-50钢对摩进行过评价的三维石墨纤维编织物增强的聚酰亚胺基自润滑保持架复合材料,在316℃下与热压氮化硅对摩进行了摩擦磨损试验,以确定其与陶瓷材料对摩时在摩擦学性能方面的变化。这些材料将应用在固体润滑的采用高比强度... 详细信息

将以前与M-50钢对摩进行过评价的三维石墨纤维编织物增强的聚酰亚胺基自润滑保持架复合材料,在316℃下与热压氮化硅对摩进行了摩擦磨损试验,以确定其与陶瓷材料对摩时在摩擦学性能方面的变化。这些材料将应用在固体润滑的采用高比强度陶瓷滚动元件的高速透平轴承中。试验结果表明,这些复合材料与热压氮化硅对摩时的摩擦和磨损都急剧增大。这是由于从氮化硅环上发生了细小磨屑的物理和(或)化学转移,以及这些磨屑转移到复合材料表面上的缘故。调整复合材料中纤维和聚合物基体的比例,以及用所研究过的两种固体润滑剂混合物之一都可以降低摩擦与磨损。

关键词：固体润滑透平轴承陶瓷复合材料

固体润滑透平轴承第二部分:在316℃下与钢对摩的复合材料的发展

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固体润滑 1990年第3期10卷 229-235页

作者： P.Sutor M.N.Gardos 聂明德 midwest Research institute Kansas City Missouri 64110 Hughes Aircraft Company E1 Segundo California 90245

对自润滑聚合物复合材料在316℃(600°F)下于空气中与AISI M-5C钢相对滑动时的摩擦学特性进行了测定。所有的复合材料均含有4种组分——聚酰亚胺树脂基体,增强用三维正交法织成的石墨纤维编织物、无机固体润滑剂填料和磷酸氢二铵[(NH_4)... 详细信息

对自润滑聚合物复合材料在316℃(600°F)下于空气中与AISI M-5C钢相对滑动时的摩擦学特性进行了测定。所有的复合材料均含有4种组分——聚酰亚胺树脂基体,增强用三维正交法织成的石墨纤维编织物、无机固体润滑剂填料和磷酸氢二铵[(NH_4)_2HP0_4]粘结剂。结果表明,被评价的15种配方中的8种都具有低摩擦系数、低磨损和好的转移膜。评价了各种复合材料中组分的改变对摩擦学性能的影响,并且发现纤维类型的影响最大, 为了实现气体透平发动机高速推力轴承的固体润滑,选定了一种机械和摩擦学综合特性最好的复合材料制作轴承保持器。

关键词：固体润滑透平轴承复合材料摩擦

The 2012 Flash Drought Threatened US midwest Agroecosystems

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Chinese Geographical Science 2019年第5期29卷 768-783页

作者： JIN Cui LUO Xue XIAO Xiangming DONG Jinwei LI Xueming YANG Jun ZHAO Deyu College of Urban and Environment Liaoning Normal UniversityDalian116029China Department of Microbiology and PlantBiology Center for Spatial AnalysisUniversity of OklahomaNormanOK73019USA Ministry of Education Key Laboratory ofbiodiversity Science and Ecological Engineering Institute of Biodiversity ScienceFudan UniversityShanghai200433China KeyLaboratory of Land Surface Pattern and Simulation Institute of Geographic Sciences and Natural Resources ResearchChinese Academyof SciencesBeijing100101China

In the summer of 2012, the US midwest, the most productive agricultural region in the world, experienced the most intense and widespread drought on record for the past hundred years. The 2012 drought, characterized as ‘flash drought’, developed in May with a rapid intensification afterwards, and peaked in mid-July. ~76% of crop region and 60% of grassland and pasture regions have been under moderate to severe dry conditions. This study used multiple lines of evidences, i.e., in-situ AmeriFlux measurements, spatial satellite observations, and scaled ecosystem modeling, to provide independent and complementary analysis on the impact of 2012 flash drought on the US midwest vegetation greenness and photosynthesis carbon uptake. Three datasets consistently showed that 1) phenological activities of all biomes advanced 1–2 weeks earlier in 2012 compared to the other years of 2010–2014;2) the drought had a more severe impact on agroecosystems(crop and grassland) than on forests;3) the growth of crop and grassland was suppressed from June with significant reduction of vegetation index, sun-induced fluorescence(SIF) and gross primary production(GPP), and did not recover until the end of growing season. The modeling results showed that regional total GPP in 2012 was the lowest(1.76 Pg C/yr) during 2010–2014, and decreased by 63 Tg C compared with the other-year mean. Agroecosystems, accounting for 84% of regional GPP assimilation, were the most impacted by 2012 drought with total GPP reduction of 9%, 7%, 6%, and 29% for maize, soybean, cropland, and grassland, respectively. The frequency and severity of droughts have been predicted to increase in future. The results imply the importance to investigate the influences of flash droughts on vegetation productivity and terrestrial carbon cycling.

关键词： food security terrestrial carbon cycling eddy covariance Vegetation Photosynthesis Model sun-induced fluorescence(SIF)

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白毛茛中生物碱的提取和HPLC分析

生物工程学报 2004年第2期20卷 306-308页

作者： Holly A Weber Maureen Joseph (midwest Research institute 425 Volker BlvdKansas City Agilent TechnologiesInc 2850 Centerville Road Wilmington MO 64110 USADE 19808-1610 USA

白毛茛根粉末经室温萃取后用HPLC分析其中的生物碱成分 ,色谱柱为ZorbaxEclipseXDB C18快速分离 ,该方法可准确测定白毛茛中主要的生物碱 ,包括小檗碱 (berberine)和白毛莨碱 (hydrastine)。萃取和HPLC分析还可用于其他几种生物碱的测... 详细信息

白毛茛根粉末经室温萃取后用HPLC分析其中的生物碱成分 ,色谱柱为ZorbaxEclipseXDB C18快速分离 ,该方法可准确测定白毛茛中主要的生物碱 ,包括小檗碱 (berberine)和白毛莨碱 (hydrastine)。萃取和HPLC分析还可用于其他几种生物碱的测定 ,包括氢化小蘖碱 (canadine)、白毛莨分碱 (hydrastinine)和巴马亭 (palmatine) ,也可以应用于其它含小檗碱的植物根。EclipseXDB C18快速分离柱采用等梯度分离 ,所有组分在

关键词：白毛茛生物碱提取 HPLC分析草药植物消炎药抗生素

HIV and intestinal parasite co-infections among a Chinese population: an immunological profile

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Infectious Diseases of Poverty 2013年第1期2卷 144-151,143页

作者： Li-Guang Tian Tian-Ping Wang Shan Lv Feng-Feng Wang Jian Guo Xiao-Mei Yin Yu-Chun Cai Mary Kathryn Dickey Peter Steinmann Jia-Xu Chen National institute of Parasitic Diseases Chinese Center for Disease Control and Prevention(China CDC) WHO Collaborating Centre for Malaria Schistosomiasis and FilariasisKey Laboratory of Parasite and Vector BiologyMinistry of HealthShanghai 200025People’s Republic of China Anhui institute of Parasitic Disease Control Hefei 241000People’s Republic of China University of Oklahoma Midwest 73110OKUSA Department of Epidemiology and Public Health Swiss Tropical and Public Health Institu

Background:Parasite infections often result in a switch of the human body’s predominant immune reaction from T-helper 1(Th1)-type to ***,parasite infections are widely expected to accelerate the progression of human immunodeficiency virus(HIV)infections to acquired immunodeficiency syndrome(AIDS).In the People’s Republic of China,both parasitic diseases and AIDS are epidemic in certain rural areas,and co-infections are relatively ***,no population-based studies have yet investigated the frequency of HIV and parasite co-infections,and its effects on immune *** studied(1)the immune status of an HIV-infected population,and(2)the effect of co-infection of HIV and intestinal parasites on selected parameters of the human immune ***:A total of 309 HIV-infected individuals were recruited and compared to an age-matched and sex-matched control group of 315 local HIV-negative *** were administered to all participants to obtain information on sociodemographic characteristics,sanitation habits,family income,and recent clinical *** consecutive stool samples and 10 ml samples of venous blood were also collected from each individual for the diagnosis of parasite infections and quantitative measurements of selected cytokines and CD4+T-lymphocytes,***:During the study period,79 HIV-infected individuals were not under highly active antiretroviral therapy(HAART)and were thus included in our analysis;the prevalence of intestinal helminth infections was 6.3%and that of protozoa was 22.8%.The most common protozoan infections were Blastocystis hominis(***)(13.9%)and Cryptosporidium spp.(10.1%).The prevalence of Cryptosporidium *** HIV-infected individuals was significantly higher than that in HIV negative individuals(P0.05).However,the following trend

关键词： HIV Intestinalparasite Co-infection Immunological profile People’s Republic of China