检索结果-南通市图书馆

维普期刊数据库

Increasing temperatures affect multiyear life cycle of the outbreak bush-cricket Barbitistes vicetinus(Orthoptera,Tettigoniidae)

在线全文

学校读者我要写书评

暂无评论

Insect Science 2023年第2期30卷 530-538页

作者： giacomo Ortis Lorenzo Marini giacomo Cavaletto Luca Mazzon Department of Agronomy FoodNatural resourcesAnimals and Environment(DAFNAE)University of PaduaLegnaroItaly

Although outbreaks of rare species are unusual,several insect species have become emerging pests probably due to the ongoing environmental *** vicetinus was first described in 1993 as an endemic bush-cricket of north-east Italy and was considered rare until 2008,when it became an established pest,causing severe damages to forests and *** possible role of temperature in changing its life cycle has still to be fully ***,we explored the effect of summer temperature on egg diapause and the effect of winter temperature on egg *** observations showed that the proportion of embryos that can complete development at the end of summer ranged from zero to nearly 90% depending on summer temperatures.A substantial shift in the rate of development from 20% to nearly 80% occurred in a thermal range of about 1℃.On the contrary,overwinter egg survival was high and constant(90%)across a wide range of winter temperatures that go well beyond both the cold and warm thermal limits of the current species ***,the results suggest a potential key role of summer temperature warming on the outbreak propensity of this species that is able to switch from a multiyear to an annual life cycle with just a 1-2℃ warming.

关键词： climate change diapauses global warming overwinter survival pest pluriannualcycle

Late onset Alzheimer’s disease:modeling disease hallmarks via in vitro 3D iNeuron cultures

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Signal Transduction and Targeted Therapy 2024年第11期9卷 4769-4770页

作者： giacomo Masserdotti Institute of Stem Cell Research Helmholtz Center Munich85764 NeuherbergGermany Biomedical Center Munich(BMC) Physiological GenomicsLMU Munich82152 Planegg-MartinsriedGermany

A study recently published in Science1 reported a novel in vitro model system for Alzheimer’s disease(AD),based on the direct neuronal reprogramming of human fibroblasts from control and AD patients,that successfully replicates several hallmarks of the *** such,it further advances in vitro modeling of AD,allowing not only to investigate the molecular mechanisms behind it,but also to perform high-throughput screenings aimed at identifying potential therapeutic treatments.

关键词： Alzheimer Neuron programming

Hierarchical control for generator and battery in the more electric aircraft

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China(Information Sciences) 2019年第9期62卷 168-181页

作者： Alberto CAVALLO Antonio RUSSO giacomo CANCIELLO Department of Engineering University of Campania

This paper addresses the problem of intelligent power management for the more electric aircraft framework. The main objective is to regulate the power flow between a low voltage and a high voltage busses through control of a Buck-Boost converter unit. This approach allows the battery to help the generator when an overload scenario occurs, keeping at the same time the battery state of charge above a prescribed threshold. Moreover, in case a continued severe overload causes the battery state of charge to drop below a prescribed threshold, partial shedding of(noncritical) loads occurs. The control objectives are achieved through the design of a hierarchical control strategy based on high gain control for the low level and a finite state automaton for the high level control. Rigorous mathematical proofs of stability are provided for both low level and high level control and a detailed simulator with accurate model of the battery is presented in order to demonstrate the correctness and effectiveness of the proposed approach.

关键词： supervisory control high gain control sliding mode control nonlinear control robust control more electric aircraft switched systems

High Order Semi-implicit Multistep Methods for Time-Dependent Partial Differential Equations

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Communications on Applied Mathematics and Computation 2021年第4期3卷 701-718页

作者： giacomo Albi Lorenzo Pareschi Computer Science Department University of VeronaVerona 37134Italy Mathematics and Computer Science Department University of FerraraFerrara 44121Italy

We consider the construction of semi-implicit linear multistep methods that can be applied to time-dependent PDEs where the separation of scales in additive form,typically used in implicit-explicit(IMEX)methods,is not *** shown in Boscarino et al.(***.68:975-1001,2016)for Runge-Kutta methods,these semi-implicit techniques give a great flexibility,and allow,in many cases,the construction of simple linearly implicit schemes with no need of iterative *** this work,we develop a general setting for the construction of high order semi-implicit linear multistep methods and analyze their stability properties for a prototype lineal'advection-diffusion equation and in the setting of strong stability preserving(SSP)*** findings are demonstrated on several examples,including nonlinear reaction-diffusion and convection-diffusion problems.

关键词： Semi-implicit methods Implicit-explicit methods Multistep methods Strong stability preserving High order accuracy

The neural bases of vitality forms

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

National Science Review 2020年第1期7卷 202-213页

作者： Giuseppe Di Cesare Marzio Gerbella giacomo Rizzolatti Cognitive Architecture for Collaborative Technologies Unit Italian Institute of Technology 2. Department of Medicine and Surgery Neuroscience Unit University of Parma Istituto di Neuroscienze Consiglio nazionale delle Ricerche

Unlike emotions, which are short-lasting events accompanied by viscero-motor responses, vitality forms are continuous internal states that modulate the motor behaviors of individuals and are devoid of the autonomic modifications that characterize real emotions. Despite the importance of vitality forms in social life, only recently have neurophysiological studies been devoted to this issue. The first part of this review describes f MRI experiments, showing that the dorso-central insula is activated during the execution, the perception and the imagination of arm actions endowed with different vitality forms as well as during the hearing and the production of speech conveying vitality forms. In the second part, we address the means by which the dorso-central insula modulates the networks for controlling action execution and how the sensory and interoceptive information is conveyed to this insular sector. Finally, we present behavioral data showing the importance of vitality forms in social interactions.

关键词： action observation social interactions emotions insula mirror mechanism

CHK2 kinase in the DNA damage response and beyond

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Molecular Cell Biology 2014年第6期8卷 442-457页

作者： Laura Zannini Domenico Delia giacomo Buscemi Department of Experimental Oncology Fondazione IRCCS Istituto Nazionale dei Tumori Via Amadeo 42 20133 Milan Italy

The serine/threonine kinase CHK2 is a keycomponent of the DNA damage response. In human cells, following genotoxic stress, CHK2 is activated and phosphorylates 〉20 proteins to induce the appropriate cellular response, which, depending on the extent of damage, the cell type, and other factors, could be cell cycle checkpoint activation, induction of apoptosis or senescence, DNA repair, or tolerance of the damage. Recently, CHK2 has also been found to have cellular functions independent of the presence of nuclear DNA lesions. In par- ticular, CHK2 participates in several molecular processes involved in DNA structure modification and cell cycle progression. In this review, we discuss the activity of CHK2 in response to DNA damage and in the maintenance of the biological functions in unstressed cells. These activities are also considered in relation to a possible role of CHK2 in tumorigenesis and, as a consequence, as a target of cancer therapy.

关键词： DNA damage checkpoints apoptosis genomic stability

Quantum cellular automata and free quantum field theory

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Frontiers of physics 2017年第1期12卷 65-75页

作者： giacomo Mauro D'Ariano Paolo Perinottit QUIT Group Dipartimento di Fisica via Bassi 6 1-27100 Pavia Italy

In a series of recent papers [1-4] it has been shown how free quantum field theory can be derived without using mechanical primitives （including space-time, special relativity, quantization rules, etc.）, but only considering the easiest quantum algorithm encompassing a countable set of quantum systems whose network of interactions satisfies the simple principles of unitarity, homogeneity, locality, and isotropy. This has opened the route to extending the axiomatic information-theoretic derivation of the quantum theory of abstract systems [5, 6] to include quantum field theory. The inherent discrete nature of the informational axiomatization leads to an extension of quantum field theory to a quantum cellular automata theory, where the usual field theory is recovered in a regime where the discrete structure of the automata cannot be probed. A simple heuristic argument sets the scale of discreteness to the Planck scale, and the customary physical regime where discreteness is not visible is the relativistic one of small waveveetors. In this paper we provide a thorough derivation from principles that in the most general case the graph of the quantum cellular automaton is the Cayley graph of a finitely presented group, and showing how for the case corresponding to Euclidean emergent space （where the group resorts to an Abelian one） the automata leads to Weyl, Dirac and Maxwell field dynamics in the relativistic limit. We conclude with some perspectives towards the more general scenario of non-linear automata for interacting quantum field theory.

关键词： quantum automata quantum walks quantum fields axiomatics Planck scale

The potential for an old-growth forest to store carbon in the topsoil:A case study at Sasso Fratino,Italy

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Forestry Research 2024年第2期35卷 23-32页

作者： Tommaso Chiti Nicola Benilli Giovanni Mastrolonardo giacomo Certini Dipartimento per la Innovazione nei Sistemi Biologici Agroalimentari e Forestali(DIBAF)Universitàdella TusciaVia San C.de Lellis Snc01100 ViterboItaly Dipartimento di Scienze e Tecnologie Agrarie AlimentariAmbientali e Forestali(DAGRI)Universitàdegli Studi di FirenzeP.le delle Cascine 1850144 FirenzeItaly

There is considerable interest devoted to oldgrowth forests and their capacity to store carbon(C)in biomass and *** of C stocks in old-growth forests are carried out worldwide,although there is a lack of information on their actual potential for C *** further understand this,soil organic carbon(SOC)was measured in one of Italy's best-preserved old-growth forests,the Sasso Fratino Integral Nature *** reserve is on the World Heritage List along with other ancient beech forests of Europe,and it is virtually untouched due to the steepness of the terrain,even before legal constraints were *** the sandstone-derived soils are often shallow,they are rich in organic ***,no quantification had been carried *** systematically sampling the topsoil across the forest,we accurately determined the average amount of SOC(62.0±16.9 Mg ha^(–1))and nitrogen(4.0±1.2 Mg ha^(–1))in the top 20 *** the CENTURY model,future dynamics of SOC stocks were predicted to 2050 according to two climate scenarios,A1F1 and B2,the first of high concern and the second more *** model projected an increase of 0.2 and 0.3 Mg ha^(–1)a^(–1)by 2030 under the A1F1 and B2 scenarios,respectively,suggesting that the topsoil in old-growth forests does not reach equilibrium but continues accumulating ***,from 2030 to 2050,a decline in SOC accumulation is predicted,indicating SOC net loss at high altitudes under the worst-case *** study confirms that soils in oldgrowth forests play a significant role in carbon *** also suggests that climate change may affect the potential of these forests to store SOC not only in the long term but also in the coming years.

关键词： Carbon sequestration CENTURY model Climate change Forest soil Soil nitrogen

维普期刊数据库

Insights into the protective role of immunity in neurodegenerative disease

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2017年第1期12卷 64-65页

作者： Cristoforo Comi giacomo Tondo Neurology Unit Department of Translational MedicineUniversity of Piemonte OrientaleNovaraItaly Interdisciplinary Research Center of Autoimmune Diseases(IRCAD) University of Piemonte OrientaleNovaraItaly(Comi C)

The immune system（IS）is set to provide protection against pathogens,surveillance against tumor cells and promotion of *** functions can be efficiently performed thanks to the presence of a large network of cells wit... 详细信息

关键词： immunity protective surveillance specialization branches promotion traditionally microglia innate Figure

维普期刊数据库