检索结果-南通市图书馆

World Journal of Clinical Cases 2024年第19期12卷 3824-3836页

作者： Felix Kölblinger elena MD Schönthaler Andreas Baranyi Tatjana Stross Frederike T Fellendorf Dirk von Lewinski Robert Queissner Eva Z Reininghaus Nina Dalkner Clinical Department of Psychiatry and Psychotherapeutic Medicine Medical University of GrazGraz 8036Austria Clinical Department of Cardiology Medical University of GrazGraz 8036Austria

BACKGROUND Affective disorders(AD)have been linked to inflammatory processes,although the underlying mechanisms of this relationship are still not fully *** is hypothesized that demographic,somatic,lifestyle,and personality variables predict inflammatory parameters in *** To identify biopsychosocial factors contributing to inflammation in AD measured with two parameters,C-reactive protein(CRP)and *** This observational study investigated 186 hospital inpatients diagnosed with AD using demographic parameters,serum inflammatory markers,somatic variables,psychological questionnaires,and lifestyle *** regression analyses were used to predict inflammatory markers from demographic,somatic,lifestyle,and personality *** Analyses showed that 33.8%of the variance of CRP was explained by body mass index and other somatic medication(***-diabetics),age and education,and age of affective disorder *** leukocytes,20.1%of the variance was explained by smoking,diet,metabolic syndrome(MetS),and anti-inflammatory medication(***-steroidal anti-inflammatory drugs).Other psychiatric or behavioural variables did not reach *** Metabolic components seem important,with mounting evidence for a metabolic affective disorder *** modifications and psychoeducation should be employed to prevent or treat MetS in AD.

关键词： Affective disorders C-reactive protein Leukocytes Metabolic syndrome Health behaviour Personality

大陆俯冲界面之上大规模硅富集流体的地球物理学证据

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

中国科学：地球科学 2024年第9期54卷 2848-2863页

作者：毛元彤赵亮 Marco G.MALUSÀ Stefano SOLARINO Silvia PONDRELLI 孙宝璐 Coralie AUBERT Simone SALIMBENI elena EVA Stéphane GUILLOT 中国科学院地质与地球物理研究所岩石圈演化与环境演变全国重点实验室北京100029 中国科学院大学地球与行星科学学院北京100049 Department of Earth and Environmental Sciences University of Milano-BicoccaMilan 20126Italy Istituto Nazionale di Geofisica e Vulcanologia Osservatorio Nazionale TerremotiGenova 16145Italy Istituto Nazionale di Geofisica e Vulcanologia Sezione di BolognaBologna 40127Italy UniversitéGrenoble Alpes UniversitéSavoie Mont BlancCNRSIRDUGEISTerreGrenoble 38000France

俯冲带中的流体可能对俯冲过程产生重要影响.然而,关于大陆俯冲期间流体规模及其作用的地球物理约束仍然有限.西阿尔卑斯造山带是全球保存最完好的大陆俯冲带之一,为认识大陆俯冲过程中流体作用的影响提供了重要的参考.本文综合多种地... 详细信息

俯冲带中的流体可能对俯冲过程产生重要影响.然而,关于大陆俯冲期间流体规模及其作用的地球物理约束仍然有限.西阿尔卑斯造山带是全球保存最完好的大陆俯冲带之一,为认识大陆俯冲过程中流体作用的影响提供了重要的参考.本文综合多种地球物理方法分析了西阿尔卑斯造山带地区的V_(P)/V_(S)比值,发现在俯冲区的上盘侧存在高V_(P)/V_(S)(>1.9)带,与部分蛇纹岩化的上覆地幔楔位置一致;而在下盘侧存在异常低的V_(P)/V_(S)(<1.7)带,异常深度浅于30km.本文认为,观测到的低V_(P)/V_(S)比值异常是由地壳内广泛分布的富硅岩脉导致,指示了在俯冲时期大陆俯冲界面之上可能存在的富硅流体流动.本文的结果暗示俯冲时期的流体流动可能降低了俯冲界面的有效应力,从而促进了大陆俯冲.

关键词：西阿尔卑斯造山带地壳精细结构接收函数 V_(P)/V_(S)波速比硅富集

同方期刊数据库

Hormetic effects of abiotic environmental stressors in woody plants in the context of climate change

在线全文

学校读者我要写书评

暂无评论

Journal of Forestry Research 2023年第1期34卷 7-19页

作者： elena A.Erofeeva Department of Ecology Lobachevsky State University of Nizhni Novgorod23 Gagarina PrNizhni NovgorodRussian Federation 603950

Woody plants contribute to the stability and productivity of terrestrial ecosystems and are significantly affected by climate *** to the concept of environmental hormesis,any environmental stressors can cause hormesis,that is,stimulation in low doses and inhibition in high *** studies have demonstrated plant hormesis under low doses of various abiotic ***,the hormetic responses of woody plants to abiotic stressors from climate change are insufficiently *** review analyses data on the stimulating effects of low doses of climate stressors in experiments and in real *** laboratory and field experiments show that single and combined exposure to various climate stressors(temperature,humidity,and elevated carbon dioxide concentrations) can cause hormesis in various species and functional types of woody plants,which can be accompanied by hormetic trade-offs and *** addition,there is evidence of climate hormesis in woody plants in ecosystem *** experiments in various ecosystems show that elevated temperatures and/or precipitation or elevated carbon dioxide concentrations causing hormesis in dominant tree species can stimulate ecosystem ***,climate hormesis of the growth and reproduction of dominant forest tree species contributes to the spread of forests,that is,climate-driven ecological *** main commonalities of climate hormesis in woody species include:(1) Low-dose climate stressors cause hormesis in woody plants when strong(limiting) stressors do not affect plants or these limiting stressors are mitigated by climate change.(2) Hormesis can occur with the direct impact of climatic stressors on trees and with the indirect impact of these stressors on plants through other parts of the ecosystem.(3)Climate stressor interactions(e.g.,synergism,antagonism)can affect hormesis.(4) Hormesis may disappear due to tree acclimatization with consequent changes in the

关键词： Abiotic stress Ecological succession Ecosystem Forest Hormesis

New Exceptional Sets and Convergence of the Square Partial Sums of Walsh–Fourier Series

在线全文

学校读者我要写书评

暂无评论

Acta Mathematica Sinica,English Series 2020年第7期36卷 733-748页

作者： elena PRESTINI Dipartimento di Matematica Universitàdi Roma"Tor Vergata"Via della Ricerca Scientifica 100133 RomaItalia

For double Walsh–Fourier series and with f∈L2([0,1)×[0,1))we prove two almost orthogonality results relative to the linearized maximal square partial sums operator SN(x,y)f(x,y).Assumptions are N(x,y)non-decreasing as a function of x and of y and,roughly speaking,partial derivatives with approximately constant ratio■≌2n0 for all x and y,where n0 is any fixed non-negative ***,independent of N(x,y)and n0,are then extended to Lr,110.

关键词： Walsh integer Convergence

Magnetic cycles of Sun-like stars with different levels of coronal and chromospheric activity——comparison with the Sun

在线全文

学校读者我要写书评

暂无评论

Research in Astronomy and Astrophysics 2016年第9期16卷 123-136页

作者： elena Shimanovskaya Vasiliy Bruevich elena Bruevich Sternberg Astronomical Institute Moscow State University

The atmospheric activity of the Sun and Sun-like stars is analyzed involving observations from the HK-project at the Mount Wilson Observatory, the California and Carnegie Planet Search Program at the Keck and Lick Observatories and the Magellan Planet Search Program at the Las Campanas Observatory. We show that for stars of E G and K spectral classes, the cyclic activity, similar to the 11-yr solar cycle, is different： it becomes more prominent in K-stars. Comparative study of Sun-like stars with different levels of chromospheric and coronal activity confirms that the Sun belongs to stars with a low level of chromospheric activity and stands apart among these stars by its minimum level of coronal radiation and minimum level of variations in photospheric flux.

关键词： Sun activity -- Sun-like stars activity

Survival,food consumption and growth of Norway lobster(Nephrops norvegicus)kept in laboratory conditions

在线全文

学校读者我要写书评

暂无评论

Integrative Zoology 2010年第3期5卷 256-263页

作者： elena MENTE School of Agricultural Sciences Department of Ichthyology and Aquatic EnvironmentFytoko StreetGR-38446 N.Ionia MagnisiasGreece and 2School of Biological Sciences(Zoology)University of AberdeenTillydrone AvenueAB242TZ AberdeenUK

Successful commercial aquaculture of crustacean species is dependent on satisfying their nutritional requirements and on producing rapidly growing and healthy *** results of the present study provide valuable information for feeding habits and growth of Nephrops norvegicus L.,1758)under laboratory *** aim of the present study was to examine food consumption,growth and physiology of the Norway lobster *** under laboratory ***(15 g wet weight)were distributed into 100l tanks consisting of five numbered compartments *** were fed the experimental diets(frozen mussels and pellets)for a period of 6 months.A group of starved Nephrops was stocked and fasted for 8 *** Nephrops grew well when fed the frozen mussels diet,feeding on a dry pellet feed was *** starvation group,despite the fact that showed the highest mortality(50%),exhibited a remarkable tolerance to the lack of food *** study offers further insight by correlating the amino acid profiles of Nephrops tail muscle with the two *** deviations from the mussel’s diet for asparagine,alanine and glutamic acid suggest a deficiency of these amino acids in this *** results of the present study showed that the concentrations of free amino acids are lower in relative amount than those of protein-bound amino acids,except for arginine,proline and *** present study contributes to the improvement of our knowledge on nutritional requirements of the above species.

关键词： food consumption free amino acids growth Nephrops norvegicus

Singular Integrals with Bilinear Phases

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Mathematica Sinica,English Series 2006年第1期22卷 251-260页

作者： elena PRESTINI Dipartimento di Matematica Universita di Roma 'Tor Vergata' Roma 00133 Italy

We prove the boundedness from Lp（T2） to itself, 1 〈 p 〈∞, of highly oscillatory singular integrals Sf（x, y） presenting singularities of the kind of the double Hilbert transform on a non-rectangular domain of integration, roughly speaking, defined by ｜y′｜〉｜x′｜, and presenting phases λ（Ax ＋ By） with 0≤ A, B ≤ 1 and λ≥ 0. The norms of these oscillatory singular integrals are proved to be independent of all parameters A1 B and A involved. Our method extends to a more general family of phases. These results are relevant to problems of almost everywhere convergence of double Fourier and Walsh series.

关键词： Hardy-Littlewood maximal function Maximal Hilbert transform Maximal Carleson operator Oscillatory singular integrals a.e. convergence of double Fourier series

Deciphering the presence of axial-planar veins in tectonites

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Geoscience Frontiers 2019年第6期10卷 2101-2115页

作者： elena Druguet Departament de Geologia Universitat Autonoma de Barcelona

Veins and dikes are often oriented subparallel to the axial surfaces of folds in the adjacent layered or foliated *** implies an awkward situation,since veins would lay in planes close-to-parallel to the maximum stretching axis.A series of geometric models have been conceived in order to gain insight into the possible mechanisms for their *** models are based on the analysis of a varied selection of field structures and on the review of similar structures in the existing literature.A first categorization consists on distinguishing between axial-planar veins achieved by either progressive or polyphase *** models of axial-planar veins resulting from progressive deformation are described and discussed:(1) fold-related veins associated with the standard folding mechanisms,(2) fracture arrays localized along the short limbs of folds(asymmetric fold-related veins),(3) folds associated with rotation of extension veins(vein-related folds),(4) high strain and transposition of early veins,and(5) high strain and late veins parallel to axial planar foliations(axial planar foliation-related veins).The axial planar geometry is achieved through variable amounts of progressive rotational strain,except in model 5,in which the co-planarity is acquired at the time of vein *** possibility for axial-planar veins to have developed in two distinct phases in the context of polyphase or polyorogenic tectonics has also been explored and *** study contributes to a better understanding of the intriguing interplays between deformation,metamorphic and magmatic processes in orogenic belts.

关键词： Dike Fold Fracture Metamorphic rock Migmatite Shear

Plant hormesis and Shelford’s tolerance law curve

在线全文

学校读者我要写书评

暂无评论

Journal of Forestry Research 2021年第5期32卷 1789-1802页

作者： elena A.Erofeeva Department of Ecology Lobachevsky State University of Nizhny Novgorod23 Gagarina PrNizhni NovgorodRussian Federation 603950

Shelford’s law of tolerance is illustrated by a bell-shaped curve depicting the relationship between environmental factor/factors’intensity and its favorability for species or *** is a fundamental basis of ecology when considering the regularities of environment impacts on living systems,and applies in plant biology,agriculture and forestry to manage resistance to environmental limiting factors and to enhance *** recent years,the concept of hormesis has been increasingly used to study the dose-response relationships in living organisms of different complexities,including *** requires the need for an analysis of the relationships between the hormetic dose-response model and the classical understanding of plant reactions to environments in terms of Shelford’s law of *** paper analyses various dimensions of the relationships between the hormetic model and Shelford’s tolerance law curve under the influence of natural environmental factors on plants,which are limiting for plants both in deficiency and *** analysis has shown that Shelford’s curve and hormetic model do not contradict but instead complement each *** hormetic response of plants is localized in the stress zone of the Shelford’s curve when adaptive mechanisms are disabled within the ecological *** the same time,in a species range,the ecological optimum is the most favorable combination of all or at least the most important environmental factors,each of which usually deviates slightly from its optimal *** mechanisms cannot be completely disabled in the optimum,and hormesis covers optimum and stress *** can modify the plant tolerance range to environmental factors by preconditioning and makes limits of plant tolerance to environmental factors flexible to a certain *** turn,as a result of tolerance range evolution,quantitative characteristics of hormesis(width and magnitude of hormetic zone)as well as the range of stimulatin

关键词： Hormetic dose-response Environmental limiting factor Plant stress Phenotypic plasticity Adaptive response

Energy Signaling in the Regulation of Gene Expression during Stress

在线全文

学校读者我要写书评

暂无评论

Molecular Plant 2010年第2期3卷 300-313页

作者： elena Baena-Gonzalez Instituto Gulbenkian de Ciencia Rua da Quinta Grande 6 2780-156 Oeiras Portugal

Maintenance of homeostasis is pivotal to all forms of life. In the case of plants, homeostasis is constantly threatened by the inability to escape environmental fluctuations, and therefore sensitive mechanisms must have evolved to allow rapid perception of environmental cues and concomitant modification of growth and developmental patterns for adaptation and survival. Re-establishment of homeostasis in response to environmental perturbations requires reprog- ramming of metabolism and gene expression to shunt energy sources from growth-related biosynthetic processes to defense, acclimation, and, ultimately, adaptation. Failure to mount an initial ＇emergency＇ response may result in nutrient deprivation and irreversible senescence and cell death. Early signaling events largely determine the capacity of plants to orchestrate a successful adaptive response. Early events, on the other hand, are likely to be shared by different conditions through the generation of similar signals and before more specific responses are elaborated. Recent studies lend credence to this hypothesis, underpinning the importance of a shared energy signal in the transcriptional response to various types of stress. Energy deficiency is associated with most environmental perturbations due to their direct or indirect deleterious impact on photosynthesis and/or respiration. Several systems are known to have evolved for monitoring the available resources and triggering metabolic, growth, and developmental decisions accordingly. In doing so, energy-sensing systems regulate gene expression at multiple levels to allow flexibility in the diversity and the kinetics of the stress response.

关键词： Abiotic/environmental stress metabolic regulation cell signaling gene expression post-transcriptionalcontrol transcriptional control and transcription factors.