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用系统论的观点看世界

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ISOtHERMAL VAPOUR-LIQUID PHASE DIAGRAMS DEtERMINED StAtICALLY BY MEANS Of.SPECtROSCOPIC ANALYSIS

作者： f.·拉兹洛(f. Laszlo)

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化学学报 1957年第4期 271-279页

作者： G. SCHAY, G. VARSANYI and f. BILLES (Institute of.Physical Chemistry, technical Univ. Budapest)

SUMMARY: Exact thermodynamical relations are derived by which isothermal vapour pressure diagrams of.liquid mixtures can be constructed and activity coef.icients calculated, based solely on the knowledge of.the volume concentrations of.the components in the saturated vapour. An optical method f.r determining these concentrations is described. Application to the actual system benzene-chlorobenzene proves that data determined statically by this method correspond to true *** equilibrium, as they comply with the Gibbs-Duhem relation.

关键词： ISOtHERMAL VAPOUR-LIQUID PHASE DIAGRAMS DEtERMINED StAtICALLY BY MEANS Of.SPECtROSCOPIC ANALYSIS

Bif.rcations and chaos control in a discrete-time biological model

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International Journal of.Biomathematics 2020年第4期13卷 1-31页

作者： A.Q.Khan t.Khalique Department of.Mathematics University of.Azad Jammu and Kashmir Muzaf.arabad 13100 Pakistan

In this papcr,bif.rcations and chaos control in a discrete-time Lotka-Volterra predator-prey model have been studied in *** is shown that f.r all parametric values,model hus boundary equilibria:P00(0,0),Px0(1,0),and the unique positive equilibrium point:P^+xy(d/c,r(c-d)/bc) if.c>*** Linearization method,we explored the local dynamics along with dif.erent topological classif.cations about *** also explored the boundedness of.positive solution,global dynamics,and existence of.prime-period and periodic points of.the *** is explored that f.ip bif.rcation occurs about boundary equilibria:Poo(0,0),P.o(1,0),and also there exists a f.ip bif.rcation when parameters of.the discrete-time model vary in a small neighborhood of.P^+xy(d/c,r(c-d)/bc).f.rther,it is also explored that about P^+xy(d/c,r(c-d)/bc) the model undergoes a N-S bif.rcation,and meanwhile a stable close invariant curves *** the perspective of.biology,these curves imply that betwecn predator and prey populations,there exist periodic or quasi-periodic *** simulations are presented to illustrate not only main results but also reveals the complex dynamics such as the orbits of.period-2,3,13,15,17 and *** Maximum Lyapunov exponents as well as f.actal dimension are computed numeri-cally to justif. the chaotic behaviors in the ***,f.edback control method is applied to stabilize chaos existing in the model.

关键词： Lotka-Volterra model bif.rcations and chaos center manif.ld theorem numerical simulation

A Conf.guration Deactivation Algorithm f.r Boosting Probabilistic Roadmap Planning of.Robots

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International Journal of.Automation and computing 2012年第2期9卷 155-164页

作者： Mika t. Rantanen Martti Juhola Computer Sciences School of Information Sciences University of Tampere

We present a method to improve the execution time used to build the roadmap in probabilistic roadmap planners. Our method intelligently deactivates some of.the conf.gurations during the learning phase and allows the planner to concentrate on those conf.gurations that axe most likely going to be usef.l when building the roadmap. the method can be used with many of.the existing sampling algorithms. We ran tests with f.ur simulated robot problems typical in robotics literature. the sampling methods applied were purely random, using Halton numbers, Gaussian distribution, and bridge test technique. In our tests, the deactivation method clearly improved the execution times. Compared with pure random selections, the deactivation method also signif.cantly decreased the size of.the roadmap, which is a usef.l property to simplif. roadmap planning tasks.

关键词： Probabilistic roadmaps motion planning collision avoidance sampling algorithms robotics.

Intestinal microbiota research f.om a global perspective

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Gastroenterology Report 2022年第1期10卷 62-77页

作者： Jordyn t.Wallenborn Pascale Vonaesch Department of.Epidemiology and Public Health Swiss Tropical and Public Health InstituteBaselSwitzerland University of.Basel BaselSwitzerland Department of.f.ndamental Microbiology Universityof LausanneBatiment Biophore Campus UNIL-SorgeLausanneSwitzerland

the intestinal microbiota plays a crucial role in health and changes in its composition are linked with major global human *** understanding what shapes the human intestinal microbiota composition and knowing ways of.modulating the composition are critical f.r promotion of.lif.-course health,combating diseases,and reducing global health *** aim to provide a f.undation f.r understanding what shapes the human intestinal microbiota on an individual and global scale,and how interventions could utilize this inf.rmation to promote lif.-course health and reduce global health *** brief.y review experiences within the f.rst 1,000 days of.lif. and how long-termexposures to environmental elements or geographic specif.c cultures have lasting impacts on the intestinal *** also discuss major public health threats linked to the intestinal microbiota,including antimicrobial resistance and disappearing microbial diversity due to *** order to promote global health,we argue that the interplay of.the larger ecosystem with intestinal microbiota research should be utilized f.r f.ture research and urge f.r global ef.orts to conserve microbial diversity.

关键词： intestinal microbiota studies geographic inf.uence environment societal impact global health gut microbiome

Novel ecosystems created by coal mines in central Queensland’s Bowen Basin

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Ecological Processes 2013年第1期2卷 368-379页

作者： Peter D Erskine Andrew t f.etcher Centre f.r Mined Land Rehabilitation The University of QueenslandBrisbane QLD 4072Australia

Introduction:Open-cut coal mining began in central Queensland’s Bowen Basin approximately 50 years *** this period of.time,mine rehabilitators have used a variety of.tree,shrub,and groundcover species to create‘novel ecosystems’to stabilise soils and provide vegetative cover f.r pre-supposed f.nal end-land *** examine post-mining rehabilitation f.om multiple soil and vegetation monitoring activities in the Bowen Basin to assess the similarity of.landf.rms,plant composition,and trends in plant diversity compared to unmined ref.rence ***:Rehabilitated spoil dumps and ref.rence sites were assessed using soil and vegetation data contained in compliance monitoring reports f.om Goonyella Riverside,Moura,Oaky Creek,Rolleston,and Blackwater ***,soil chemistry,and plant species mixes of.rehabilitation aged f.om 2 to 22 years were compared to selected ref.rence ***:Mines in this region have generally proposed one of.two post-rehabilitation end-land uses:either pasture f.r cattle grazing or reconstructed native communities which potentially provide native f.una *** data f.om a selection of.these mine sites suggest that when their rehabilitation was compared to nearby ref.rence sites median slope values were between 2.5 and 7 times steeper and soil pH,electrical conductivity,and phosphorus levels were signif.cantly *** steeply sloped landf.rms,poor soil characteristics,depauperate native species pool,and unif.rm presence of.exotic pasture grasses in the rehabilitation indicate that most of.these newly created ecosystems should not be used f.r cattle grazing and also have f.w natural ***:Legislative and community expectations have changed progressively over time and,although much of.the rehabilitation is currently dominated by an assemblage of.exotic buf.el grass(Cenchrus ciliaris)and Acacia spp.,recent environmental authorities suggest these‘novel ecosystems’will be judged against native ref.re

关键词： Coal mining Completion criteria Environmental conditions Novel ecosystems

Variance-Based Global Sensitivity Analysis via Sparse-Grid Interpolation and Cubature

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Communications in Computational Physics 2011年第3期9卷 542-567页

作者： Gregery t.Buzzard Dongbin Xiu Department of.Mathematics Purdue UniversityWest LafayetteIN 47907USA

the stochastic collocation method using sparse grids has become a popular choice f.r perf.rming stochastic computations in high dimensional(random)parameter *** addition to providing highly accurate stochastic solutions,the sparse grid collocation results naturally contain sensitivity inf.rmation with respect to the input random *** this paper,we use the sparse grid interpolation and cubature methods of.Smolyak together with combinatorial analysis to give a computationally ef.icient method f.r computing the global sensitivity values of.Sobol’.this method allows f.r approximation of.all main ef.ect and total ef.ect values f.om evaluation of.f.on a single set of.sparse *** discuss convergence of.this method,apply it to several test cases and compare to existing *** a result which may be of.independent interest,we recover an explicit f.rmula f.r evaluating a Lagrange basis interpolating polynomial associated with the Chebyshev *** allows one to manipulate the sparse grid collocation results in a highly ef.icient manner.

关键词： Stochastic collocation sparse grids sensitivity analysis Smolyak Sobol’

<i>In Vitro</i>Ef.icacy of.Botanicals against Rice Blast Pathogen <i>Magnaporthe oryzae oryzae</i>

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American Journal of.Plant Sciences 2021年第4期12卷 662-678页

作者： Z. Nazif. f. M. Aminuzzaman L. Laila M. K. Rehena Department of.Plant Pathology Faculty of Agriculture Sher-e-Bangla Agricultural University Dhaka Bangladesh

Rice is the most staple cereal crop of.Bangladesh and rice blast caused by Magnaporthe oryzae oryzae (MoO) has become a major f.ctor limiting rice yield in Bangladesh and throughout the world. Eight botanicals extract... 详细信息

Rice is the most staple cereal crop of.Bangladesh and rice blast caused by Magnaporthe oryzae oryzae (MoO) has become a major factor limiting rice yield in Bangladesh and throughout the world. Eight botanicals extracted both in water and ethanol namely Kalijira (Nigella sativa), Turmeric (Curcuma longa), Ginger (Zingiber officinalis), Garlic (Allium sativum), Onion (Allium cepa), Neem (Azadirachta indica), Allamanda (Allamanda cathartica) and Aloevera (Aloe vera) were tested against MoO in vitro in the Mycology Laboratory, Department of Plant Pathology, Sher-e-Bangla Agricultural University,tyle="f.nt-f.mily:Verdana;"> Dhaka, Bangladesh. All the botanicals

关键词： Rice Blast Magnaporthe oryzae oryzae (MoO) Botanical Extracts Ethanol