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Fisher Information and complexity Measure of Generalized Morse Potential Model

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communications in Theoretical Physics 2016年第9期65卷 275-279页

作者： c.A. Onate J.O.A. Idiodi Physics Department University of Benin Nigeria

The spreading of the quantum-mechanical probability distribution density of the three-dimensional system is quantitatively determined by means of the local information-theoretic quantity of the Shannon information and information energy in both position and momentum spaces. The complexity measure which is equivalent to cramer–Rao uncertainty product is determined. We have obtained the information content stored, the concentration of quantum system and complexity measure numerically for n = 0, 1, 2 and 3 respectively.

关键词： fisher information Shannon entropy complexity measures

Relationship of minimum winter temperature and temperature seasonality to the northern range limit and species richness of trees in North America

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Journal of Geographical Sciences 2022年第2期32卷 280-290页

作者： Hong QIAN ZHANG Yangjian Robert e.RIcKLeFS Xianli WANG Research and collections center Illinois State Museum1011 East Ash StreetSpringfieldIL 62703USA Key Laboratory of ecosystem Network Observation and Modeling Institute of Geographic Sciences and Natural Resources ResearchCASBeijing 100101China Department of Biology University of Missouri–St.LouisSt.LouisMO 63121USA Northern Forestry centre Canadian Forest ServiceNatural Resources Canada5320-122nd StreetEdmontonAB T6H 3S5Canada Department of Renewable Resources University of Alberta751 General Service Building EdmontonAB T6G 2H1Canada

Biologists have considered both winter coldness and temperature seasonality as major determinants of the northern limits of plants and animals in the Northern Hemisphere,which in turn drive the well-known latitudinal diversity ***,few studies have tested which of the two climate variables is the primary *** this study,we assess whether winter coldness or temperature seasonality is more strongly associated with the northern latitudinal limits of tree species and with tree species richness in North *** species were recorded in each of 1198 quadrats of 110 km×110 km in North *** used correlation and regression analyses to assess the relationship of the latitude of the northern boundary of each species,and of species richness per quadrat,with winter coldness and temperature *** richness was analyzed within 38 longitudinal,i.e.,north-south,bands(each being>1100 km long and 110 km wide).The latitudes of the northern range limits of tree species were three times better correlated with minimum temperatures at those latitudes than with temperature *** average,minimum temperature and temperature seasonality together explained 81.5%of the variation in the northern range limits of the tree species examined,and minimum temperature uniquely explained six-fold(33.7%versus 5.8%)more of this variation than did temperature *** of tree species richness with minimum temperatures were stronger than correlations with temperature seasonality for most of the longitudinal bands *** to temperature seasonality,winter coldness is more strongly associated with species distributions at high latitudes,and is likely a more important driver of the latitudinal diversity gradient.

关键词： cold tolerance latitudinal diversity gradient minimum temperature temperature seasonality temperature variation trees tropical conservatism hypothesis

Magneto convective Flow of a Non-Newtonian Fluid through Non-Homogeneous Porous Medium past a Vertical Porous Plate with Variable Suction

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Journal of Applied Mathematics and Physics 2016年第2期4卷 233-248页

作者： S. Harinath Reddy M. c. Raju e. Keshava Reddy Department of Humanities and Sciences Annamacharya Institute of Technology and Sciences (Autonomous) Rajampet India Department of Mathematics Jawaharlal Nehru Technological University Hyderabad India

Radiation absorption and chemical reaction effects on unsteady MHD free convective flow of a viscoelastic fluid past a vertical porous plate in the presence of variable suction and heat source is considered. A uniform magnetic field is assumed to be applied in the transverse direction of the flow. The set of non-linear partial differential equations is transformed into a set of ordinary differential equations by super imposing a solution with steady and unsteady part. The set of ordinary differential equations is solved by using regular perturbation scheme. The expressions for velocity, temperature and species concentration fields are obtained and the expressions for Skin friction, Nusselt number and Sherwood number are also derived. The effects of numerous physical parameters on the above flow quantities are studied with the help of graphs and tables.

关键词： MHD Visco-elastic Fluid Unsteady Flow chemical Reaction Radiation Absorption Suction

Nodal peripheral T-cell lymphomas in the new classification systems

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cancer Biology & Medicine 2023年第12期20卷 922-926页

作者： catalina Amador Wing c.chan Department of Pathology University of Miami Miller School of MedicineMiamiFL 33136USA Department of Pathology City of Hope National Medical CenterDuarteCA 91010USA

Peripheral T-cell lymphomas(PTcLs)encompass a biologically diverse group of non-Hodgkin lymphomas derived from mature *** PTcLs present as nodal diseases and include several subtypes characterized by distinct clinical and pathologic features,and will be the focus of this *** PTcL group presenting as rare distinctive extranodal diseases will not be *** T-cell neoplasms,like B-cell lymphomas,recapitulate stages of normal differentiation,the biology is notably intricate and exhibits remarkable plasticity.

关键词： lymphoma neoplasms diseases

水土保持生态建设下的黄土高原典型流域水沙响应

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中国水土保持科学 2024年第1期22卷 21-26页

作者：赵阳张永娥王昭艳张国军辛艳刘冰魏小燕中国水利水电科学研究院北京100048 宁夏回族自治区水土保持监测总站银川750002

为探讨黄土高原多沙粗沙区流域水沙关系演变特征及其对水土流失治理的响应,以黄河中游无定河流域为研究对象,综合采用水沙关系曲线、数理统计等多种方法,系统分析1956—2019年间无定河流域水沙关系多时间尺度演变特征及其与水土流失治... 详细信息

为探讨黄土高原多沙粗沙区流域水沙关系演变特征及其对水土流失治理的响应,以黄河中游无定河流域为研究对象,综合采用水沙关系曲线、数理统计等多种方法,系统分析1956—2019年间无定河流域水沙关系多时间尺度演变特征及其与水土流失治理的协同响应。研究结果表明:1)研究时段内,无定河流域年径流及年输沙量呈锐减趋势(P<0.05),且均在1970年左右发生减少突变;2)流域水沙关系在年际和场次洪水尺度上均发生深刻变化。2010年以后,暴雨频发导致流域内侵蚀物源头供应明显增加,流域河道泥沙输送能力小幅提高;3)水土保持措施实施对流域水沙锐减影响较大。2000年前后在相似降雨条件下,单位降雨量径流量和单位降雨量输沙量较20世纪70年代减少47%和62%。水土保持措施面积增加与流域径流输沙减少呈现较好的一致性,流域水土流失治理在提高黄河多沙粗沙区流域下垫面抗侵蚀能力等方面发挥重要作用。研究结果可为科学认知区域水土流失治理成效及入黄泥沙锐减成因提供参考。

关键词：水沙关系极端暴雨土壤侵蚀治理成效黄河

evaluation of Haney-Type Surface ThermalBoundary conditions Using a coupledAtmosphere and Ocean Model

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Advances in Atmospheric Sciences 2001年第3期18卷 355-375页

作者： Peter c. chu 陈玉春吕世华 Department of Oceanography Naval Postgraduate School

A coupled atmosphere-ocean model developed at the Institute for Space Studies at NASA Goddard Space Flight center (Russell et al., 1995) was used to verify the validity of Haney-type surface thermal boundary condition, which linearly connects net downward surface heat fluxQ to air/sea temperature difference ΔT by a relaxation coefficientk. The model was initiated from the National centers for environmental Prediction (NceP) atmospheric observations for 1 December 1977, and from the National Ocean Data center (NODc) global climatological mean December temperature and salinity fields at 1°x 1° resolution. The time step is 7.5 minutes. We integrated the model for 450 days and obtained a complete model-generated global data set of daily mean downward net surface fluxQ, surface air temperatureT A, and sea surface temperatureT O. Then, we calculated the cross-correlation coefficients (ccc) betweenQ and ΔT. The ensemble mean ccc fields show (a) no correlation betweenQ and ΔT in the equatiorial regions, and (b) evident correlation (ccc≥0.7) betweenQ and ΔT in the middle and high latitudes. Additionally, we did the variance analysis and found that whenk=120 W m?2K?1, the two standard deviations, σQ and σκδT , are quite close in the middle and high latitudes. These results agree quite well with a previous research (chu et al., 1998) on analyzing the NceP re-analyzed surface data, except that a smaller value ofk (80 W m?2K?1) was found in the previous study. Key words Air-sea coupled system - Ocean surface fluxes - Surface thermal boundary condition

关键词： Air-sea coupled system Ocean surface fluxes Surface thermal boundary condition

correlation Structures between Satellite All-Sky Infrared Brightness Temperatures and the Atmospheric State at Storm Scales

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Advances in Atmospheric Sciences 2022年第5期39卷 714-732页

作者： Yunji ZHANG eugene e.cLOTHIAUX David J.STeNSRUD center for Advanced Data Assimilation and Predictability Techniques and Department of Meteorology and Atmospheric ScienceThe Pennsylvania State UniversityUniversity ParkPennsylvania 16802USA

This study explores the structures of the correlations between infrared(IR)brightness temperatures(BTs)from the three water vapor channels of the Advanced Baseline Imager(ABI)onboard the GOeS-16 satellite and the atmospheric ***-based data assimilation techniques such as the ensemble Kalman filter(enKF)rely on correlations to propagate innovations of BTs to increments of model state *** the three water vapor channels are sensitive to moisture in different layers of the troposphere,the heights of the strongest correlations between these channels and moisture in clear-sky regions are closely related to the peaks of their respective weighting *** cloudy regions,the strongest correlations appear at the cloud tops of deep clouds,and ice hydrometeors generally have stronger correlations with BT than liquid *** magnitudes of the correlations decrease from the peak value in a column with both vertical and horizontal *** how the correlations decrease depend on both the cloud scenes and the cloud structures,as well as the model *** correlations between BTs and moisture,as well as hydrometeors,in fully cloudy regions decrease to almost 0 at about 30 *** horizontal correlations with atmospheric state variables in clear-sky regions are broader,maintaining non-zero values out to~100 *** results in this study provide information on the proper choice of cut-off radii in horizontal and vertical localization schemes for the assimilation of *** also provide insights on the most efficient and effective use of the different water vapor channels.

关键词： severe storm remote sensing data assimilation numerical modeling

Trace elements migrating from tailings to rock varnish laminated sediments in an old mining region from Nelson,Nevada,USA

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International Journal of Sediment Research 2022年第2期37卷 202-213页

作者： Douglas B.Sims Amanda c.Hudson John e.Keller Michael Strange Andressa cristhy Buch David Ferrari Giavanna M.Fernandez Juan Garcia-Hernandez Bailey D.Kesl Sean Torres Department of Physical Sciences College of Southern Nevada University of Nevada Fluminense Federal University

The dispersion and influence of soluble and particulate trace elements(Tes) present in the materials from abandoned mines is an imminent problem on terrestrial and aquatic *** goal of this research is to provide a broader view of such transport,assessing particle size distribution and Te interactions(e.g.,scavenging) with mine tailings and locally derived sediments transported by water in arid *** grains from wash sediment were collected from a dry ephemeral wash in Nelson,Nevada where the Techatticup Mine and Mill worked between 1850 and *** were evaluated to determine the association and behavior of certain metals and metalloids including aluminum,arsenic,barium,cadmium,copper,chromium,iron,manganese,lead,selenium,vanadium,and zinc to rock varnish laminated *** show that some metals and metalloids were more concentrated on larger particles whereas others indicated the opposite *** example,As was greatest on silt fractions and least on coarse fractions,while Se was detected only on ***,cu,Fe,Mn,Pb,and Zn concentrations all increased with decreasing particle size(silt> sand> coarse),whereas Al,Ba,and V showed the opposite trend(silt coarse).The enrichment factor(eF) of cu,Zn,Pb,As,and Se were lower in mine tailing sediment treated with wash than those obtained for source *** in treated wash sediment samples,the high eFs of Ba,cr,V,and Mn suggested a possible greater affinity of these metals to the Al,Fe,and Mn oxides from the RV *** data found in this study show that transport of contaminated sediments in arid regions could lead to the enrichment of some Tes in downgradient areas from source materials.

关键词： Adsorption Metals Metalloids Mine tailings Particle size Transport

孕晚期胎膜早破孕妇阴道内菌群变化与不良妊娠结局关系

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中国计划生育学杂志 2024年第4期32卷 884-888页

作者：李修敏张靖靖朱同娥青岛市胶州中心医院 266300

目的:分析孕晚期胎膜早破(PROM)孕妇阴道内菌群变化与不良妊娠结局关系。方法:回顾性收集2022年5月-2023年9月本院收治的孕晚期PROM孕妇128例(PROM组)、产前检查健康孕妇90例(对照组)临床资料,比较两组一般资料、孕妇阴道分泌物微生物... 详细信息

目的:分析孕晚期胎膜早破(PROM)孕妇阴道内菌群变化与不良妊娠结局关系。方法:回顾性收集2022年5月-2023年9月本院收治的孕晚期PROM孕妇128例(PROM组)、产前检查健康孕妇90例(对照组)临床资料,比较两组一般资料、孕妇阴道分泌物微生物分布构成及阴道微生态情况,比较不同阴道微生态情况孕妇不良妊娠结局。结果:PROM组革兰阳性杆菌、乳酸杆菌和革兰阳性球菌均低于对照组,变形杆菌、阴沟肠杆菌和溶血葡萄球菌均高于对照组(均P0.05);两组菌群密集度、阴道菌群多样性有差异,PROM组微生态失调占比(46.9%)高于对照组(32.2%)(P0.05)。PROM患者阴道微生态失调患者早产(15.0%)及新生儿感染率(15.0%)高于阴道微生态正常患者(2.9%、4.4%)(均P<0.05)。结论:孕晚期PROM孕妇阴道菌群密度、多样性以及微生态与健康孕妇比较出现异常,PROM孕妇阴道微生态失衡增加不良妊娠结局风险。

关键词：孕晚期胎膜早破阴道内菌群微生态不良妊娠结局

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