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Temperature cycling and its effect on mechanical behaviours of highporosity chalks

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Journal of rock Mechanics and Geotechnical Engineering 2019年第4期11卷 749-759页

作者： T.Voake A.Nermoen r.I.Korsnes I.L.Fabricius University of Stavanger StavangerNorway The National IOr Centre of Norway University of StavangerStavangerNorway International research Institute of Stavanger (IrIS) StavangerNorway Technical University of Denmark (DTU) CopenhagenDenmark

Temperature history can have a significant effect on the strength of water-saturated *** this study,hydrostatic stress cycles are applied to understand the mechanical response of chalk samples exposed to temperature cycling between each stress cycle,compared to the samples tested at a constant *** total accumulated strain during a stress cycle and the irreversible strain are *** samples from Kansas (USA) and Mons (Belgium),with different degrees of induration (*** of contact cementation),were *** samples were saturated with equilibrated water (polar) and nonpolar Isopar H oil to quantify water *** samples tested during 10 stress cycles with varying temperature (*** cycled in between each stress cycle) accumulated more strain than those tested at constant *** the stress cycles were performed at 30 ℃.The two chalk types behaved similarly when saturated with Isopar H oil,but differently when saturated with *** saturated with water,the stronger Kansas chalk accumulated more total strain and more irreversible strain within each stress cycle than the weaker Mons chalk.

关键词： Elastoplastic partitioning Anisotropic thermal expansion Strain accumulation due to temperature and stress cycles

OptiLam:Design of Optimised rolling Schedules

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Journal of Iron and Steel research International 2011年第S1期18卷 492-499页

作者： B Pea M Arribas A r Carrillo J I Barbero J Calvo Tecnalia Foundry and Iron & Steel Unit c/Geldo-Parque Tecnológico de Bizkaia Edificio 700C.P 48160-Derio (Bizkaia)-Espa a Department of Mining Metals and Materials EngineeringMcGill University3610 University StreetMontrealQuebecCanadaH3A 2B2

Nowadays it is known that the thermomechanical schedules applied during hot rolling of flat products provide the steel with improved mechanical *** this work an optimisation tool,OptiLam (OptiLam v.1),based on a predictive software and capable of generating optimised rolling schedules to obtain the desired mechanical properties in the final product is *** includes some well-known metallurgical models which predict microstructural evolution during hot rolling and the transformation austenite/ferrite during the ***,an optimisation algorithm,which is based on the gradient method,has been added,in order to design thermomechanical sequences when a specific final grain size is *** has been used to optimise rolling parameters,such as strain and ***,some of the results of the software validation performed by means of hot torsion tests are presented,showing also the functionality of the ***,the application of classical optimisation models,based on the gradient method,to hot rolling operations,is also discussed.

关键词： rolling schedules optimisation models mechanical properties grain size

Cellular Serpents and Dreaming Spires:New Frontiers in Arginine and Pyrimidine Biology

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Journal of Genetics and Genomics 2014年第10期41卷 561-565页

作者： Gabriel N.Aughey mr Y.Tastan Ji-Long Liu MrC Functional Genomics Unit Department of Physiology Anatomy and Genetics University of Oxford Oxford OX1 3PT United Kingdom

The International Conference on Arginine and Pyrimidines （ICAP） had its origin as an arginine workshop organised by a group of microbiologists led by Werner Maas in 1972 （rubio, 2003）. The shared requirement of carbamoyl phosphate in both arginine and pyrimidine metabolism led to a natural association of researchers working in both fields.

关键词： Cellular Serpents and Dreaming Spires ICAP

Sequence analysis of VP4 genes of wild type and culture adapted human rotavirus G1P[8]strains

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Asian Pacific Journal of Tropical Medicine 2011年第7期4卷 541-546页

作者： ritu Arora Ganesh S Dhale Pooja r Patil Shobha D Chitambar Enteric Viruses Group National Institute of VirologyPune India

Objective:To conduct a comparative analysis of the VP4 gene sequences of Indian wild type (06361,0613158,061060 and 0715880) and cell culture adapted(06361-CA,0613158-CA.061060- CA and 0715880-CA) G1P[8]rotavirus ***:Full-length VP4 genes of each of the four wild type G1P[8]rotavirus strains and their cell culture adapted counterparts displaying consistent cytopathic effect were subjected to rT-PCr amplification and nucleotide sequencing. results:All four cell culture adapted G1P[8]rotavirus strains showed nucleotide and amino acid substitutions in the VP4 gene as compared to their wild type *** number of substitutions however,varied from 1-64 and 1-13 *** substitutions were distributed in both VP5* and VP8* subunits of VP4 gene respectively of permeabilizalion and hemagglutinaling activity. The presence of unique amino acid substitutions was identified in two of the four wild type(V377G. S387N in 061060 and 1644L in 0715880) and all four cell culture adapted(A46V in 0613158-CA. T60r in 06361-CA,L237V.G389V and Q480H in 061060-CA and S615G and T625P in 0715880-CA) strains for the first time in the VP4 gene of P[8]*** acid substitutions generated increase in the hydrophilicity in the cell culture adapted rotavirus strains as compared to their corresponding wild type ***:Amino acid substitutions detected in the VP4 genes of G1P[8]rotavirus strains from this study together with those from other studies highlight occurrence of only strain and/or host specific substitutions during cell culture adaptation. Further evaluation of such substitutions for their role in attenuation,immunogenicity and conformation is needed for the development of newer rolavirus vaccines.

关键词： rotavirus Cell culture G1P VP4 gene

System Identification of Heritage Structures Through AVT and OMA:A review

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Structural Durability & Health Monitoring 2019年第1期13卷 1-40页

作者： Vinay Shimpi Madappa V.r.Sivasubramanian S.B.Singh Department of Civil Engineering National Institute of Technology PuducherryKaraikal609609India Department of Civil Engineering Birla Institute of Technology and Science PilaniPilani333031India

In this review article,the past investigations carried out on heritage structures using Ambient Vibration Test(AVT)and Operational Modal Analysis(OMA)for system identification(determination of dynamic properties like frequency,mode shape and damping ratios)and associated applications are summarized.A total of 68 major research studies on heritage structures around the world that are available in literature are surveyed for this *** first,field investigations carried out on heritage structures prior to conducting AVT are explained in ***,specifications of accelerometers,location of accelerometers and optimization of accelerometer networks have been elaborated with respect to the geometry of the heritage *** addition to this,ambient vibration loads and data acquisition procedures are also ***,the state of art of performing OMA techniques for heritage structures is explained ***,various applications of system identification for heritage structures are ***,conclusions are made towards errorless system identification of heritage structures through AVT and OMA.

关键词： Ambient Vibration Test(AVT) heritage structures Operational Modal Analysis(OMA) structural assessment system identification

Wild dogma II： The role and implications of wild dogma for wild dog management in Australia

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Current Zoology 2011年第6期57卷 737-740页

作者： Benjamin L. ALLEN richard M. ENGEMAN Lee r. ALLEN The University of Queensland School of Animal Studies Warrego Highway Gatton QLD 4343 National Wildlife research Centre 4101 l_aPorte Avenue Fort Collins CO 80521-2154 USA. Richard.M.Engeman@aphis.usda.gov Biosecurity Queensland Robert Wicks Pest Animal Research Centre Tor Street Toowoomba QLD 4350. Lee.Allen@ deedi.qld.gov.au

The studies of Allen （2011） and Allen et al. （2011） recently examined the methodology underpinning claims that dingoes provide net benefits to biodiversity by suppressing foxes and cats. They found most studies to have design flaws and/or observational methods that preclude valid interpretations from the data, describing most of the current literature as ＇wild dogma＇. In this short supplement, we briefly highlight the roles and implications of wild dogma for wild dog management in Australia. We discuss nomenclature, and the influence that unreliable science can have on policy and practice changes related to apex predator management

关键词： Apex predator Canis lupus dingo Practice change Public perceptions Wild dog management

IMPULSIVE DIFFErENTIAL EQUATIONS WITH GAMMA DISTrIBUTED MOMENTS OF IMPULSES AND P-MOMENT EXPONENTIAL STABILITY

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Acta Mathematica Scientia 2017年第4期37卷 985-997页

作者： r.AGArWAL S.HrISTOVA P.KOPANOV D.O'rEGAN Department of Mathematics Texas A&M University-KingsvilleKingsvilleTX 78363USA Plovdiv University Tzar Asen 244000 PlovdivBulgaria School of Mathematics Statistics and Applied MathematicsNational University of IrelandGalwayIreland

Differential tigated. We study the properties of solutions sufficient conditions for equations with impulses at random moments are set up and invescase of Gamma distributed random moments of impulses. Several are stud... 详细信息

关键词： impulses Gamma distributed moments of impulses p-moment exponentialstability Lyapunov functions

Effects of vertical position on trematode parasitism in larval anurans

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Current Zoology 2019年第6期65卷 657-664页

作者： Jacob r.JONES Camille L.STEENrOD John A.MArINO Jr. Biology Department Bradley UniversityPeoriaILUSA Department of Geography University of MarylandCollege ParkMDUSA

Spatial distributions of animals can affect interactions with their natural enemies,such as parasites,and thus have important implications for host-parasite *** spatial variation in infection risk has been explored in many systems at the landscape scale,less attention has been paid to spatial structure at smaller ***,we explore a hypothesized relationship between a common spatial variable,vertical position,and risk of parasite infection in a model aquatic system,larval frogs(rana)and trematode(Digenea)*** position is relevant to this system given evidence that the densities of snail first intermediate hosts,tadpole second intermediate hosts,and trematode infective stages can vary with *** test the effects of depth on infection risk of larval frogs by trematodes,we performed two enclosure experiments,one in the laboratory and one in the field,in which larval frogs in cages just below the water surface or near the bottom of the water column were exposed to *** with near-surface cages,mean infection load(number of cysts)in tadpoles in near-bottom cages was 83%higher after 48-h exposures in the laboratory and 730%higher after 10-day exposures in the *** findings thus indicate that infection risk depends on depth,which may have adaptive significance,as tadpoles have previously been shown to change vertical position in response to parasite *** results motivate future work examining vertical variation in infection risk and may have broader implications for host-parasite dynamics and evolution of host and parasite behavior.

关键词： avoidance behavior cercariae Echinostomatidae host-parasite interactions rana spatial structure

Multidisciplinary management of gastric and gastroesophageal cancers

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World Journal of Gastroenterology 2008年第24期14卷 3773-3780页

作者： Markus Moehler Orestis Lyros Ines Gockel Peter r Galle Hauke Lang First Department of Internal Medicine of Johannes Gutenberg University of Mainz Institute of Surgery of Johannes Gutenberg University of Mainz

Carcinomas of the stomach and gastroesophageal junction are among the five top leading cancer types worldwide. In spite of radical surgical r0 resections being the basis of cure of gastric cancer, surgery alone provides long-term survival in only 30% of patients with advanced International Union Against Cancer （UICC） stages in Western countries because of the high risk of recurrence and metachronous metastases. However, recent large phase-Ⅲ studies improved the diagnostic and therapeutic options in gastric cancers, indicating a more multidisciplinary management of the disease. Multimodal strategies combining different neoadjuvant and/or adjuvant protocols have clearly improved the gastric cancer prognosis when combined with surgery with curative intention. In particular, the perioperative （neoadjuvant, adjuvant） chemotherapy is now a well-established new standard of care for advanced tumors. Adjuvant therapy alone should be carefully discussed after surgical resection, mainly in individual patients with large lymph node positive tumors when neoadjuvant therapy could not be done. The palliative treatment options have also been remarkably improved with new chemotherapeutic agents and will further be enhanced with targeted therapies such as different monoclonal antibodies. This article reviews the most relevant literature on the multidisciplinary management of gastric and gastroesophageal cancer, and discusses future strategies toimprove Iocoregional failures.

关键词： Gastric cancer Chemotherapy Chemoradiation Adjuvant Neoadjuvant