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Analysis of Metamaterial Cloaks Using Circular Split ring resonator Structures

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Computers, Materials & Continua 2016年第6期52卷 133-141页

作者： susan Thomas Balamati Choudhury rEVA University Bengaluru NAL Bengaluru.

A novel microwave cloak using circular split ring resonator(Srr)based metamaterial structure has been proposed in this *** cloak which operates at a frequency of 10.6 GHz is composed of cylindrical dielectric sheets printed with circular split ring resonators of spatially varying and anisotropic material *** article also focuses on the phenomenon of resonant splitting in circular Srr microwave cloak.A detailed analysis of various linear metamaterial arrays and their response has also been elucidated.

关键词： Cloaking metamaterial circular split ring resonator.

Testosterone deficiency：a historical perspective

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Asian Journal of Andrology 2014年第2期16卷 161-168,I0006页

作者： Eberhard Nieschlag susan Nieschlag Center of reproductive Medicine and Andrology University Hospital of M(Jnster MOnster Germany Center of Excellence in Genomic Medicine research King Abdulaziz University Jeddah Saudi Arabia.

The biological effects of the testes and testosterone are known since antiquity. Aristotle knew the effects of castration and his hypothesis on fertilization is one of the first scientific encounters in reproductive biology. Over centuries, castration has been performed as punishment and to produce obedient slaves, but also to preserve the soprano voices of prepubertal boys. The Chinese imperial （and other oriental） courts employed castrates as overseers in harems who often obtained high-ranking political positions. The era of testis transplantation and organotherapy was initiated by John Hunter in London who transplanted testes into capons in 1786. The intention of his experiments was to prove the ＇vital principle＇ as the basis for modern transplantation medicine, but Hunter did not consider endocrine aspects. Arnold Adolph Berthold postulated internal secretion from his testicular transplantation experiments in 1849 in Gottingen and is thus considered the father of endocrinology. Following his observations, testicular preparations were used for therapy, popularized by self-experiments by Charles-Edouard Brown-Sequard in Paris （1889）, which can at best have placebo effects. In the 1920s Sergio Voronoff transplanted testes from animals to men, but their effectiveness was disproved. Today testicular transplantation is being refined by stem cell research and germ cell transplantation. Modern androgen therapy started in 1935 when Enrest Lacquer isolated testosterone from bull testes in Amsterdam. In the same year testosterone was chemically synthesized independently by Adolf Butenandt in G6ttingen and Leopold ruzicka in Basel. Since testosterone was ineffective orally it was either compressed into subcutaneous pellets or was used orally as 17α-methyl testosterone, now obsolete because of liver toxicity. The early phases of testosterone treatment coincide with the first description of the most prominent syndromes of hypogonadism by Klinefelter, by Kallmann, DelCastillo

关键词： castration testosteron testosterone deficiency

Early acute kidney injury after liver transplantation: Predisposing factors and clinical implications

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World Journal of Hepatology 2017年第18期9卷 823-832页

作者： Suehana rahman susan V Mallett Brian r Davidson royal Free Perioperative research Group Department of Anaesthesia Royal Free Hospital Royal Free NHS Foundation Trust Department of Surgery Royal Free Hospital Royal Free NHS Foundation Trust

To investigate the additional clinical impact of hepatic ischaemia reperfusion injury (HIrI) on patients sustaining acute kidney injury (AKI) following liver transplantation. METHODSThis was a single-centre retrospective study of consecutive adult patients undergoing orthotopic liver transplantation (OLT) between January 2013 and June 2014. Early AKI was identified by measuring serum creatinine at 24 h post OLT (> 1.5 × baseline) or by the use of continuous veno-venous haemofiltration (CVVHF) during the early post-operative period. Patients with and without AKI were compared to identify risk factors associated with this complication. Peak serum aspartate aminotransferase (AST) within 24 h post-OLT was used as a surrogate marker for HIrI and severity was classified as minor (rate (1000-5000 IU/L) or severe (> 5000 IU/L). The impact on time to extubation, intensive care length of stay, incidence of chronic renal failure and 90-d mortality were examined firstly for each of the two complications (AKI and HIrI) alone and then as a combined outcome. rESULTSOut of the 116 patients included in the study, 50% developed AKI, 24% required CVVHF and 70% sustained moderate or severe HIrI. Median peak AST levels were 1248 IU/L and 2059 IU/L in the No AKI and AKI groups respectively (P = 0.0003). Furthermore, peak serum AST was the only consistent predictor of AKI on multivariate analysis P = 0.02. AKI and HIrI were individually associated with a longer time to extubation, increased length of intensive care unit stay and reduced survival. However, the patients who sustained both AKI and moderate or severe HIrI had a longer median time to extubation (P re length of stay (P = 0.001) than those with either complication alone. Ninety-day survival in the group sustaining both AKI and moderate or severe HIrI was 89%, compared to 100% in the groups with either or neither complication (P = 0.049). CONCLUSIONHIrI has an important role in the devel

关键词： Hepatic ischaemia reperfusion injury Liver transplantation Perioperative care Acute kidney injury Marginal grafts

The significance of N‑carbamoylglutamate in ruminant production

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Journal of Animal Science and Biotechnology 2023年第5期14卷 1798-1814页

作者： susan A.McCoard David Pacheco Agresearch Limited Grasslands Research CentreTennent DrivePrivate Bag 11008Palmerston North 4442New Zealand

Improving the efficiency and production of grazing ruminants to support food and fiber production,while reducing the environmental footprint and meeting the welfare needs of the animals,is important for sustainable livestock production *** of new technologies that can improve the efficiency of nitrogen(N)utilization in ruminants,and that are effective and safe,has important implications for ruminant livestock production.N-carbomoylglutamate(NCG)is a functional micronutrient that stimulates endogenous synthesis of arginine,which can improve survival,growth,lactation,reproductive performance,and feed efficiency in *** is a growing body of evidence to support the potential of dietary NCG supplementation to improve the productive capacity and N utilization efficiency of *** review summarizes the current literature on the effects of dietary supplementation with NCG in ruminants and impacts on production and potential to reduce the environmental footprint of farmed ruminant *** current literature highlights the potential for commercial application in ruminant livestock to improve productivity and N utilization efficiency.

关键词： Dairy Environment Fetal growth and development Lactation N-carbamoylglutamate Nitrogen red meat reproduction

Bemisia tabaci Phylogenetic Groups in India and the relative Transmission Efficacy of Tomato leaf curl Bangalore virus by an Indigenous and an Exotic Population

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Journal of Integrative Agriculture 2012年第2期11卷 235-248页

作者： r V Chowda-reddy M Kirankumar susan E Seal V Muniyappa Girish B Valand M r Govindappa John Colvin Agriculture Health and Environment GroupNatural Resources InstituteUniversity of Greenwich at MedwayChatham MaritimeKentME4 4TBUnited Kingdom Southern Crop Protection and Food research Centre London-N5V 4T3Canada Department of Plant Pathology University of Agricultural SciencesBangalore-560 065India Department of Plant Pathology Gujarat Agricultural UniversityAnand 388110GujaratIndia

Bemisia tabaci adults from various host-plant species were collected from 31 regions across India.266 *** samples were first screened by rAPD-PCr to examine molecular variability and to select individuals with different ***-plant and region of collection were then used to select 25 individuals for PCr amplification and sequencing of their partial mitochondrial cytochrome oxidase subunit one（mtCOI）*** comparisons with mtCOI consensus sequences showed that the majority of these samples had 〈3.5% sequence divergence from groups currently termed Asia I,Asia II-5,Asia II-7,and Asia *** biotype-B *** from India clustered into the Middle East-Asia Minor 1 group.A new group of *** from Coimbatore,collected from pumpkin,was related most closely to the Asia I group（6.2% sequence divergence from the consensus Asia I sequence）.To increase our understanding of the epidemiology of tomato leaf curl disease（ToLCD）and the key *** genetic groups involved in virus spread,the indigenous Asia I and the exotic biotype-B population from South India were used to carry out transmission experiments using Tomato leaf curl Bangalore virus（ToLCBV）.The acquisition access periods（AAP）,inoculation access periods（IAP）,latent periods（LP）,and ToLCBV transmission efficiencies of the two populations were compared and the biotype-B had the more efficient transmission *** results are discussed in relation to recent changes in the epidemiology of tomato leaf curl disease in South India.

关键词： begomoviruses mitochondrial cytochrome oxidase whitefly Bemisia tabaci virus-vector relationships epidemiology

A new technique helps to uncover unknown peptides and disinfection by-products in water

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Journal of Environmental Sciences 2016年第4期28卷 6-8页

作者： susan D.richardson Cristina Postigo Department of Chemistry and Biochemistry University of South Carolina Department of Environmental Chemistry Institute for Environmental Assessment and Water Research-Spanish National Research Council(IDAEA-CSIC)

Environmental water samples can be extremely complex,with potentially thousands of molecules that can derive from natural organic matter（NOM）and thousands that derive from anthropogenic *** complex as these samples are,drinking water can be even more *** to disinfectants that are used to treat drinking water（e.g.,chlorine,chloramines,

关键词： Disinfection by-products(DBPs) Drinking water Halogenated peptides Liquid chromatography Natural organic matter(NOM) Non-targeted analysis Tandem mass spectrometry Water contaminants

Close up observation and inversion of low-altitude ENA emissions during a substorm event

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Science China Earth Sciences 2019年第6期62卷 1024-1032页

作者： Li LU susan MCKENNA-LAWLOr Jan BALAZ National Space Science Center of the Chinese Academy of Sciences Space Technology Ireland Ltd. Maynooth Co.Kildare Institute of Experimental Physics

During a series of substorm events on November 12 2004, the Neutral Atom Detector Unit(NUADU) flying onboard the TC-2 spacecraft observed, close to perigee, bright low-altitude Energetic Neutral Atom(ENA) emissions from both north and south poles. Through utilizing high temporal and spatial resolution data inversion techniques we present here a global view the associated processes of energetic ion deposition and injection at the uniquely high temporal resolution of a few minutes. It is demonstrated that the ENA emissions observed came mainly from the, low-altitude, high magnetic latitude polar region. Since precipitating ions follow magnetic field lines and have more chance to produce ENA emissions through charge exchange ***, the employment of a low-orbit satellite to record at high temporal and spatial resolution ENA image data is inferred to be the best way to monitor those dynamic ring current variations that occur during geomagnetic activity.

关键词： Low-altitude ENA emissions ENA image inversion Pitch angle distribution Ion injection Ion deposition

A New restarting Adaptive Trust-region Method for Unconstrained Optimization

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Journal of the Operations research Society of China 2017年第4期5卷 487-507页

作者： Morteza Kimiaei susan Ghaderi Department of Mathematics Asadabad BranchIslamic Azad UniversityAsadabadIran Department of Mathematics Faculty of ScienceRazi UniversityKermanshahIran

In this paper,we present a new adaptive trust-region method for solving nonlinear unconstrained optimization *** precisely,a trust-region radius based on a nonmonotone technique uses an approximation of Hessian which is adaptively *** produce a suitable trust-region radius;preserve the global convergence under classical assumptions to the first-order critical points;improve the practical performance of the new algorithm compared to other exiting ***,the quadratic convergence rate is established under suitable *** results on the CUTEst test collection of unconstrained problems are presented to show the effectiveness of the proposed algorithm compared with some exiting methods.

关键词： Unconstrained optimization Trust-region methods Nonmonotone technique Adaptive radius Theoretical convergence

Fundamental aspects of postharvest heat treatments

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Horticulture research 2014年第1期1卷 176-182页

作者： susan Lurie romina Pedreschi Department of Posthavest Science The Volcani CenterAROBet Dagan 50250Israel Pontificia Universidad Cato′lica de Valparaı′so Escuela de Agronomı′aLa PalmaQuillotaChile

Heat treatments have been investigated for use in many aspects of postharvest *** have been developed for insect control,prevention of fungal development and prevention of postharvest storage disorders including chilling *** treatment times and temperature range vary widely,from days at 356C to 396C in hot air,to up to 636C for less than a minute in hot *** of the research has been performed to develop solutions to a particular problem,and less investigation has been conducted on the responses of the commodity to the ***,since the turn of the century,a number of groups have been active in examining the molecular responses and changes that occur in commodities during and after the heat *** review examines the changes at the level of transcriptome,proteome and metabolome that occur in response to the different heat treatments.

关键词： treatment. treatment prevention