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EQUATION REGRESSION mODEl FOR THE 50 m FREESTYlE PERFORmANCE IN ElITE mASTER SWImmERS

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EQUATION REGRESSION MODEL FOR THE 50 M FREESTYLE PERFORMANCE...

Ammonia-oxidizing archaea and bacteria are structured by geography in biological soil crusts across North American arid lands

第23届国际运动生物力学学术年会

作者： m.l.Zampagni G.Donà m.motta S.martelli P.Benelli m.marcacci G.De Vito Biomechanics laboratory-Rizzoll Orthopaedic Institute Bologna Italy Physics Department Bologna University Italy University of Urbino "Carlo Bo" Italy Department of Applied Physiology Faculty of Science University of Strathclyde Glasgow UK

This study was conducted during the 10 World masters Championships,held in Riccione,Italy,June 3-11,*** aim was to investigate,in male and female elite master swimmers,the relationships between performance time and age,anthropometric characteristics(weight,stature,arm and forearm lengths and forearm volume) and muscle strength(hand grip).Performance times were recorded during 50 m freestyle *** values and hand grip were collected the same day the competition in a field laboratory organised beside the swimming *** this study we considered twenty eight volunteers:15 men aged 42-81 years and 13 women aged 41-73 ***,the anthropometrical characteristics,the hand grip strength and the performance time were used for a simple correlation *** a multiple regression analysis was carried out to create a swimming time prediction model for the 50 freestyle *** revealed that in 50 m freestyle women race,age,weight and strength explained about 97% of the variance in *** study provided novel information which could be useful in designing training programs,optimizing swimmer’s resources or capabilities.

关键词： master swimmers hand grip anthropometric parameters.

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Ecological Processes 2013年第1期2卷 98-107页

作者： Yevgeniy marusenko Scott T Bates Ian Anderson Shannon l Johnson Tanya Soule Ferran Garcia-Pichel School of life Sciences Arizona State UniversityP.O.Box 874501TempeAZ 85287-4501USA Cooperative Institute for Researchin Environmental Sciences University of ColoradoBoulderCO80309USA Bioscience Division B-11Los Alamos National LaboratoryLos AlamosNM87545USA Department of Biology Indiana University-Purdue UniversityFort WayneINUSA

Introduction:Biological soil crusts(BSCs)can dominate surface cover in dry lands worldwide,playing an integral role in arid land biogeochemistry,particularly in N fertilization through fixation and *** is a characteristic and universal N transformation in BSCs that becomes important for the export of N beyond the microscopic bounds of the crust *** contribution of ammonia-oxidizing bacteria(AOB)in BSCs has been shown,but the role and extent of the recently discovered ammonia-oxidizing archaea(AOA)have ***:We sampled various types of crusts in four desert regions across the western United States and characterized the composition and size of ammonia-oxidizing communities using clone libraries and quantitative PCR targeting the amoA gene,which codes for the ammonia monooxygenase enzyme,universally present in ammonia-oxidizing ***:All archaeal amoA sequences retrieved from BSCs belonged to the Thaumarchaeota(Nitrososphaera associated Group I.1b).Sequences from the Sonoran Desert,Colorado Plateau,and Great Basin were indistinguishable from each other but distinct from those of the Chihuahuan *** on amoA gene abundances,archaeal and bacterial ammonia oxidizers were ubiquitous in our survey,but the ratios of archaeal to bacterial ammonia oxidizers shifted from bacterially dominated in northern,cooler deserts to archaeally dominated in southern,warmer ***:Archaea are shown to be potentially important biogeochemical agents of biological soil crust N *** associated with different types of BSCs and biogeographical factors reveal a niche differentiation between AOA and AOB,possibly driven by temperature.

关键词： Biological soil crust Desert Arid amoA Ammonia oxidation Nitrification Nitrogen cycle Thaumarchaeota

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用直接加热法离析铜矿石

国外金属矿选矿 1965年第4期 1-7页

作者： m.A.mckinney l.m.Evans 肖安雄

美国矿山局的研究指出用内衬耐火砖的迴转窑直接加热离析铜矿石在技术上是可行的。过去离析过程只有在复杂得多的间接加热不锈钢迴转窑内才有效。该法是把粉矿与少量食盐和如焦炭之类的碳质物料预先混合,然后加热至830℃,生出细片状和... 详细信息

美国矿山局的研究指出用内衬耐火砖的迴转窑直接加热离析铜矿石在技术上是可行的。过去离析过程只有在复杂得多的间接加热不锈钢迴转窑内才有效。该法是把粉矿与少量食盐和如焦炭之类的碳质物料预先混合,然后加热至830℃,生出细片状和薄膜状的金属铜吸附在焦炭颗粒上面。焙砂经冷却和细磨进行浮选回收铜。在直接加热离析过程中,必须在燃烧器内严格控制空气和煤气的混合。当燃烧天然气的过剩空气系数限制在1.15至1.20时,铜回收率才好。对含铜为1.4到6.2％的石英岩、石灰石岩、砂土岩和褐铁矿型的氧化铜矿的间断试验,结果得含铜为17至45％的浮选精矿,回收率为84至95％。炉气分析指出,因挥发损失的铜可忽略不计。直接加热离析的预备试验,后来用含1.4％Cu的石英岩矿石在处理能力约27公斤/小时的离析——浮选中间工厂的连续实验来补充。在一个典型实验中得含25％Cu的精选精矿,铜回收率84％。从工业观点来看,用内衬陶质物料的迴转窑将给过程以更大的吸引力,研究将继续进行以便创造好的离析条件。

关键词：铜矿石直接加热焦炭硅孔雀石石灰石离析过程石英岩矿样固体燃料环状硅酸盐矿物变质岩铜回收率铜精矿品位加热法

丙二醛、视黄醇与多囊卵巢综合征发病机制关系的探索

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首都医科大学学报 2018年第4期39卷 512-516页

作者：王虎生阮祥燕李扬璐程姣姣谷牧青杜娟金凤羽 alfred O.mueck 首都医科大学附属北京妇产医院妇科内分泌科北京100026 德国图宾根大学妇产医院妇女健康部与妇女健康研究中心

目的研究氧化应激指标丙二醛(malondialdehyde,mDA)、视黄醇(retinol,RET)与多囊卵巢综合征(polycystic ovary syndrome,PCOS)发病机制的关系。方法选取2017年7月至10月就诊于首都医科大学附属北京妇产医院内分泌科的PCOS患者65例作为... 详细信息

目的研究氧化应激指标丙二醛(malondialdehyde,mDA)、视黄醇(retinol,RET)与多囊卵巢综合征(polycystic ovary syndrome,PCOS)发病机制的关系。方法选取2017年7月至10月就诊于首都医科大学附属北京妇产医院内分泌科的PCOS患者65例作为研究组,同时选取因女方输卵管因素或男方因素而不孕或正常体检的健康育龄女性24例作为对照组。测量所有参与者的人体测量学指标、内分泌代谢指标及各氧化应激指标,比较PCOS患者与对照组各氧化应激指标特点。结果 PCOS组mDA、超氧化物歧化酶(superoxide dismutase,SOD)均显著高于对照组(Plutathione,Glut oxyd,)、总抗氧化活性(total antioxidant activity,TAA)、维生素C(vitamin C,VC)、维生素E(vitamin E,VE)与对照组相比差异无统计学意义(P>0.05)。mDA与抗苗勒管激素(anti-müllerian hormone,AmH)呈明显正相关(r=0.208,P=0.05),与睾酮(testosterone,TT)、空腹胰岛素(fasting insulin,FINS)、稳态胰岛素指数(homeostasis model assessment insulin resistance,HOmA-IR)无明显相关性(P>0.05);RET与AmH呈明显负相关(r=-0.232,PmA-IR无明显相关性(P>0.05)。结论多个氧化应激指标显示PCOS患者体内mDA代表的氧化应激水平增高,RET代表的抗氧化水平降低,深入研究氧化应激与PCOS的关系可能有助于阐明PCOS的发病机制。

关键词：多囊卵巢综合征氧化应激丙二醛视黄醇发病机制

Pediatric GNAO1 encephalopathies:from molecular etiology of the disease to drug discovery

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Neural Regeneration Research 2023年第10期18卷 2188-2189页

作者： Vladimir l.Katanaev Jana Valnohova Denis N.Silachev Yonika A.larasati Alexey Koval Translational Research Centre in Oncohaematology Department of Cell Physiology and MetabolismFaculty of MedicineUniversity of GenevaGenevaSwitzerland Institute of life Sciences and Biomedicine Far Eastern Federal UniversityVladivostokRussia Department of Functional Biochemistry of Biopolymers A.N.Belozersky Research Institute of Physico-Chemical BiologyMoscow State UniversityMoscowRussia

Gao is the major G protein in neurons,where it transduces signals from numerous G proteincoupled receptors(GPCRs)such as D2 dopamine,μ-opioid,m2 muscarinic,or α2-adrenergic *** 2013,the first mutations in GNAO1,the gene encoding Gao,were described in pediatric patients with encephalopathies(Nakamura et al.,2013),suffering from movementdisorders,epileptic seizures。

关键词： encephalo opioid

用流态化法测定电动(ζ)电位的新技术——硅石在水溶液介质中电动行为的研究

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国外金属矿选矿 1982年第8期 17-22页

作者： l.m.Amaratunga l.A.Adorjan 吴绪珍

pH值和高价金属离子在硅石-水界面上的吸附对ζ电位影响的详细研究证实了流态化电位技术的实用性。求得硅石的零电点为pHpzc=2.2。与能水解的金属离子Al（Ⅲ）和Th（Ⅳ）相比,ca（Ⅱ）离子对硅石-水界面的负ζ电位的降低几乎没有什么影... 详细信息

pH值和高价金属离子在硅石-水界面上的吸附对ζ电位影响的详细研究证实了流态化电位技术的实用性。求得硅石的零电点为pHpzc=2.2。与能水解的金属离子Al（Ⅲ）和Th（Ⅳ）相比,ca（Ⅱ）离子对硅石-水界面的负ζ电位的降低几乎没有什么影响。Al（Ⅲ）和Th（Ⅳ）离子在中性pH条件下,有使ζ电位反转的能力。所获得的结果与文献报道值很一致;因而证明了流态化电位技术作为测量ζ电位的常规电动方法的通用性。当ζ电位的绝对值接近零时,流态化电位梯度线性关系的有效范围可以扩大到较高的固体浓度。因此,可以认为在高固体浓度范围内,非线性的原因是颗粒间的排斥电位（相互排斥能）占优势所造成的。

关键词：金属离子 Al Th 电解质水溶液流态化床固体浓度 ζ电位动电电位硅石

Neonatal vitamin A injection promotes cattle muscle growth and increases oxidative muscle fibers

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Journal of Animal Science and Biotechnology 2019年第1期10卷 140-149页

作者： Bo Wang Wei Nie Xing Fu Jeanene m de Avila Yannan ma mei-Jun Zhu martin maquivar Steven m Parish Jan R Busboom mark l Nelson min Du State Key lab of Animal Nutrition College of Animal Science and TechnologyChina Agricultural University Department of Animal Sciences Washington State University Department of Animal Sciences Louisiana State University College of Animal Science and Technology Gansu Agricultural University School of Food Science Washington State University College of Veterinary Science Washington State University

Background: Vitamin A and its metabolite,retinoic acid(RA),are important regulators of cell differentiation and organ *** impact on beef cattle muscle growth remains ***: Angus steer calves were administrated with 0(control) or 150,000 IU vitamin A(retinyl palmitate in glycerol,i.m.) per calf at birth and 1 month of *** 2 months of age,a biopsy of the Biceps femoris muscle was obtained to analyze the immediate effects of vitamin A injection on myogenic capacity of muscle *** resulting steers were harvested at 14 months of ***: Vitamin A administration increased cattle growth at 2 *** 2 months of age,Vitamin A increased PAX7 positive satellite cells and the expression of myogenic marker genes including PAX7,mYF5,mYOD and *** derived mononuclear cells were further isolated and induced myogenesis in *** myotubes and a higher degree of myogenesis was observed in vitamin A ***,vitamin A increased latissimus dorsi(lD) muscle fiber size at *** addition,vitamin A increased the ratio of oxidative type I and type IIA fibers and reduced the glycolic type IIX ***,we found that RA,a key bioactive metabolite of vitamin A,activated PPARGC1 A promoter,which explains the upregulated expression of PPARGC1 A in skeletal ***: Vitamin A administration to neonatal calves enhanced postnatal muscle growth by promoting myogenesis and increasing satellite cell density,accompanied with a shift to oxidative muscle fibers.

关键词： Cattle muscle Fiber type muscle growth myogenesis PAX7 Satellite cells Vitamin A

Forest Biomass Available for Industrial Energy Conversion in Portugal

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Forest Biomass Available for Industrial Energy Conversion in...

考虑降雨空间分布的城市内涝对模式雨型响应特征分析

The 20th European Biomass Conference and Exhibition

作者： monteiro,C. Tarelho,l.A.C. lopes,m. monteiro,A. Casc?o,P. miranda,A.m.

In recent years, pressures on global environment and energy security have led to an increasing demand on renewable energy sources, and diversification of world’s energy supply. Among these resources the forest biomass residues（FBR） could exert an important role, since it is considered a renewable and CO2 neutral energy resource, and can potentially provide energy for heat, power and transport fuels. Taking into account the need to have information about the scenario of FBR to energy, and its implications on the Portuguese climate policy, it was initiated a study in order to characterize and quantify the FBR available from the Portuguese forest to energy purposes. In this study were presented the results of the amounts of forest biomass residues（FBR） available in Portugal, taking into account some conditioning related with land characteristics（e.g. slope）. Comparing the FBR consumption for industrial thermal power plants it is possible to verify that the FBR available（1.91×106 ton（dry） year-1） in Portugal is enough to address the needs of industrial plants, but if the planned plants come into operation, the FBR available is no longer sufficient. Although considered a neutral carbon source, it is possible to notice that the FBR is a source which has impacts on air quality, due to the emissions of atmospheric pollutants. In order to understand the impacts of the chain of forest biomass to energy, the emissions of atmospheric pollutants associated with the logistics and the energetic conversion of forest biomass residues it is also presented.

关键词：

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水利水运工程学报 2024年第2期2024卷 44-54页

作者：梁鑫侯精明陈光照李东来潘鑫鑫吕佳豪马越姬国强西安理工大学省部共建西北旱区生态水利国家重点实验室陕西西安710048 西咸新区沣西新城海绵城市技术中心陕西西安712000

短历时暴雨是形成城市内涝的主要原因,其雨型对内涝致灾影响显著。以陕西省西咸新区沣西新城为研究区域,基于模式雨型设计了具有不同集中度的典型暴雨过程,并考虑了降雨空间分布的不均匀性,应用城市雨洪模型(GAST-SWmm耦合模型)对7种模... 详细信息

短历时暴雨是形成城市内涝的主要原因,其雨型对内涝致灾影响显著。以陕西省西咸新区沣西新城为研究区域,基于模式雨型设计了具有不同集中度的典型暴雨过程,并考虑了降雨空间分布的不均匀性,应用城市雨洪模型(GAST-SWmm耦合模型)对7种模式雨型在不同重现期下的致涝特征进行模拟分析。结果表明:(1)单峰雨型比双峰雨型具有更强的致涝性,雨峰为中后峰的单峰雨型致涝性更强,雨峰为中峰的单峰雨型在小于50 a重现期下淹没量最大,而在大于50 a重现期下雨峰为后峰的单峰雨型淹没量最大,100 a重现期下其淹没量较雨型Ⅳ增大6.58%;(2)双峰雨型中雨型Ⅴ的致涝性最强,在100 a重现期时,其淹没量较雨型靠前的单峰雨型增加1912.42 m^(3);在大于20 a重现期时,雨型Ⅴ在中风险区的积水面积较雨峰靠前的单峰雨型增大1.81%~2.29%;(3)各雨型在高风险区的积水面积峰现时间随重现期的变化而不同,雨型Ⅵ的峰现时间始终在降雨结束时出现,雨型Ⅱ、Ⅳ、Ⅴ、Ⅶ的峰现时间随着重现期增大而提前;雨型Ⅰ、Ⅲ的峰现时间在小于20 a重现期时随着重现期增大,分别从105 min延后至120 min、110 min,在大于20 a重现期时随着重现期增大,分别从120 min、110 min提前到100 min。城市内涝特征对不同模式雨型条件下的响应规律的研究,可为相关部门抗涝救灾提供参考。

关键词：模式雨型降雨空间分布城市内涝 GAST-SWmm耦合模型基尼系数

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