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Deuterobiosphere the Chemosynthetic Second Biosphere of the Globe. A First Review

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Integrative Zoology 2008年第2期3卷 101-114页

作者： francis D.POR The Scientific Collections The Life Sciences InstituteThe Hebrew UniversityIsrael

With the discovery of Ophel, a chemosynthesis-based continental subterranean environment (Por 2007), it becameevident that such environments, previously known only from the sea , are spanning the world as a parallel biosphere,the deuterobiosphere. In this preliminary contribution the different known biomes of the deuterobiosphere arereviewed and some general and comparative features are listed.

关键词： anchialine systems chemosynthetic environments cold seeps deuterobiosphere hot vents Ophel thiobios

Squeeze casting for metal alloys and composites:An overview of influence of process parameters on mechanical properties and microstructure

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China Foundry 2023年第2期20卷 148-158页

作者： Osarue Osaruene Edosa francis Kunzi Tekweme Kapil Gupta Department of Mechanical and Industrial Engineering Technology University of JohannesburgJohannesburgRepublic of South Africa Department of Mechanical Engineering College of Engineering and TechnologyWilliam V.S.Tubman UniversityHarperMaryland CountyRepublic of Liberia

Squeeze casting is a well-established and reliable process for fabricating high-integrity metallic alloys,bimetals,and *** quality and high performance of squeeze cast components are dependent on optimum casting *** selection of parameter values may adversely affect the quality of the *** squeeze cast components are generally subjected to secondary processing such as heat treatment,extrusion,and other bulk deformation processes to improve the microstructural features and mechanical *** treatment further refines the grains and reduces porosity,consequently improving tensile strength,and hardness;however,ductility *** paper provides a comprehensive review on studies concerning the influence of processing parameters on porosity,density,percentage elongation,strength,hardness,wear,and fracture of squeeze casting alloys,aiming to provide sufficient information on the squeeze casting process and the effects of processing parameters on product quality.

关键词： composites microstructure optimization porosity solidification squeeze casting

Structure Identification of Nonlinearly Coupled Complex Networks with Non-Delayed and Delayed Coupling

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Chinese Physics Letters 2010年第3期27卷 68-71页

作者：郭万里 francis Austin 陈士华 School of Mathematics and Statistics Wuhan University Wuhan 430072 Department of Applied Mathematics The Hong Kong Polytechnic University Hong Kong

Topology identification is an important problem for complex networks because much information about networks in practice such as the topological structure is uncertain. We propose an adaptive control method for identifying the topology of general nonlinearly-coupled complex network models that are either non-delayed or delayed coupled. Simulation results are also presented to illustrate the effectiveness of the method.

关键词： Mathematical physics Statistical physics and nonlinear systems

Status and Trends in Advanced SOI Devices and Materials

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Journal of Semiconductors 2006年第4期27卷 573-582页

作者： Balestra francis Institut de Microélectronique Electromagnétisme et PhotoniqueGrenoble 38016France

A review of recently explored effects in advanced SOI devices and materials is *** effects of key device parameters on the electrical and thermal floating body effects are shown for various device *** advances in the understanding of the sensitivity of electron and hole transport to the tensile or compressive uniaxial and biaxial strains in thin film SOI are *** performance and physical mechanisms are also addressed in multi-gate Si,SiGe and Ge *** hot carrier phenomena are *** effects of gate misalignment or underlap,as well as the use of the back gate for charge storage in double-gate nanodevices and of capacitorless DRAM are also outlined.

关键词： MOSFETs 半导体场效应管疲劳效应灵敏度

Bile acid signaling and biliary functions

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Acta Pharmaceutica Sinica B 2015年第2期5卷 123-128页

作者： Hannah Jones Gianfranco Alpini Heather francis Baylor Scott & White Digestive Disease Research Center Division Research Central Texas Veterans Health Care System Department of Medicine Texas A&M University

This review focuses on various components of bile acid signaling in relation to cholangiocytes. Their roles as targets for potential therapies for cholangiopathies are also explored. While many factors are involved in these complex signaling pathways, this review emphasizes the roles of transmembrane G protein coupled receptor(TGR5), farnesoid X receptor(FXR), ursodeoxycholic acid(UDCA) and the bicarbonate umbrella. Following a general background on cholangiocytes and bile acids,we will expand the review and include sections that are most recently known(within 5–7 years) regarding the field of bile acid signaling and cholangiocyte function. These findings all demonstrate that bile acids influence biliary functions which can, in turn, regulate the cholangiocyte response during pathological events.

关键词： Bile acids Cholangiocytes Receptors Signaling

SEIRS model for malaria transmission dynamics incorporating seasonality and awareness campaign

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Infectious Disease Modelling 2024年第1期9卷 84-102页

作者： francis Oketch Ochieng Department of Pure and Applied Mathematics Jomo Kenyatta University of Agriculture and TechnologyNairobi62000-00200Kenya

Malaria,a devastating disease caused by the Plasmodium parasite and transmitted through the bites of female Anopheles mosquitoes,remains a significant public health concern,claiming over 600,000 lives annually,predominantly among *** tools,including the application of Wolbachia,are being developed to combat malaria-transmitting *** study presents a modified susceptible-exposed-infectious-recovered-susceptible(SEIRS)compartmental mathematical model to evaluate the impact of awareness-based control measures on malaria transmission dynamics,incorporating mosquito interactions and *** the next-generation matrix approach,we calculated a basic reproduction number(R0)of 2.4537,indicating that without robust control measures,the disease will persist in the human *** model equations were solved numerically using fourth and fifth-order Runge-Kutta *** model was fitted to malaria incidence data from Kenya spanning 2000 to 2021 using least squares curve *** fitting algorithm yielded a mean absolute error(MAE)of 2.6463 when comparing the actual data points to the simulated values of infectious human population(Ih).This finding indicates that the proposed mathematical model closely aligns with the recorded malaria incidence *** optimal values of the model parameters were estimated from the fitting algorithm,and future malaria dynamics were projected for the next *** research findings suggest that social media-based awareness campaigns,coupled with specific optimization control measures and effective management methods,offer the most cost-effective approach to managing malaria.

关键词： SEIRS model Malaria transmission dynamics Model fitting Basic reproduction number Stability analysis Seasonality Awareness campaign Runge–Kutta method

Selection of optimal land uses for the reclamation of surface mines by using evolutionary algorithms

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International Journal of Mining Science and Technology 2017年第3期27卷 491-498页

作者： Palogos Ioannis Galetakis Michael Roumpos Christos Pavloudakis francis School of Mineral Resources Engineering Technical University of Crete 73100 Chania Greece Public Power Corporation of Greece-Mines Division 104 42 Athens Greece

A methodology for the selection of the optimal land uses of the reclamation of mined areas is proposed. It takes into consideration several multi-nature criteria and constraints, including spatial constrains related to the permissible land uses in certain parts of the mined area. The methodology combines desirability functions and evolution searching algorithms for selection of the optimal reclamation scheme. Its application for the reclamation planning of the Amynteon lignite surface mine in Greece indicated that it handles effectively spatial and non-spatial constraints and incorporates easily the decision-makers preferences regarding the reclamation strategy in the optimization procedure.

关键词： Reclamation Land uses Optimization Evolutionary algorithms Desirability functions

A Grid Middleware for Distributed Java Computing with MPI Binding and Process Migration Supports

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Journal of Computer Science & Technology 2003年第4期18卷 505-514页

作者：陈琳王卓立 francis C.M.Lau Department of Computer Science and Information Systems The University of Hong Kong P.R. China

"Grid" computing has emerged as an important new research field. With years of efforts, grid researchers have successfully developed grid technologies including security solutions,resource management protocols, information query protocols, and data management services. However, as the ultimate goal of grid computing is to design an infrastructure which supports dynamic,cross-organizational resource sharing, there is a need of solutions for efficient and transparent task re-scheduling in the *** this research, a new grid middleware is proposed, called G-JavaMPI. This middleware adds the parallel computing capability of Java to the grid with the support of a Grid-enabled message passing interface (MPI) for inter-process communication between Java processes executed at different grid points. A special feature of the proposed G-JavaMPI is the support of Java process migration with post-migration message redirection. With these supports, it is possible to migrate executing Java process from site to site for continuous computation, if some site is scheduled to be turned down for system reconfiguration. Moreover, the proposed G-JavaMPI middleware is very portable since it requires no modification of underlying OS, Java virtual machine, and MPI package. Preliminary performance tests have been conducted. The proposed mechanisms have shown good migration efficiency in a simulated grid environment.

关键词： grid middleware MPI java process migration

Influence of lanthanum level and interactions with nitrogen source on early development of Juglans nigra

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Journal of Rare Earths 2009年第2期27卷 270-279页

作者： Nicodemus Michael A Salifu K francis Jacobs Douglass F Department of Forestty and Natural Resources Hardwood Tree Improvement and Regeneration Center Purdue University West Lafayette IN 47907 USA

Rare earth elements have been used for 30 years in Chinese agriculture to improve growth and yield. Numerous scientific studies have shown improvements in physiology, mineral nutrition, and growth, though deleterious effects may also occur. Very few studies have been performed on woody species. We exponentially fertilized one-year old black walnut （Juglans nigra L.） seedlings with 0, 0.1, 1, 10, or 100 mg lanthanum （La） and 800 mg nitrogen （N） as NaNO3, （NH4）2SO4, NH4NO3, or no N. One month following final fertilization, growth, mineral nutrition, photosynthesis, chlorophyll, and nitrate reductase activity were assessed. Plants fertilized with the highest level of La had reduced fine root growth, concentrations of magnesium, calcium, nickel, and phosphorus, photosynthesis levels, and chlorophyll a content. Foliar La concentration showed an interaction effect, with three to four times greater concentration in plants fed at 100 mg La to those given 10 mg La for （NH4）2SO4 and NHaNO3 treatments. The results suggested no beneficial effects of La addition at levels used in this study and interactions between N source and La levels did not have an important impact on the growth, mineral nutrition, or physiology of black walnut seedlings.

关键词： lanthanum nitrate reductase chlorophyll photosynthesis Jugians nigra rare earths