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Boson Nebulae Charge

Chinese Physics Letters 2010年第1期27卷 67-69页

作者： Ciprian Dariescu marina-Aura Dariescu Faculty of Physics A1. I. Cuza University Bd. Carol I No. 11 700506 Iaqi Romania

We use the first-order approximate solutions to the nonlinear system of Klein-Gordon-Maxwell-Einstein equations describing the minimally coupled charged spin-less field to a spherically symmetric spacetime to analyze a becoming boson star. In the far future and long-range approximation, we derive an analytical time-dependent charge which allows us to point out several significant moments in the evolution of the boson nebula.

关键词： Nebulae

Heun Functions Describing Fermions Evolving in Parallel Electric and Magnetic Fields

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Chinese Physics Letters 2015年第7期32卷 21-24页

作者： marina-AURA Dariescu CIPRIAN Dariescu Faculty of Physics Alexandru Ioan Cuza University

The present work deals with the behavior of fermions moving in a static magnetic induction and a time-harmonic electric field, both oriented along Oz. For the ultra-relativistic particles described by a Heun double co... 详细信息

关键词： exp Heun Functions Describing Fermions Evolving in Parallel Electric and Magnetic Fields

Paleoclimate Study of Mountain Ecosystems by Multiple Group Biological Analysis

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Journal of Mountain Science 2011年第1期8卷 24-36页

作者： marina SKRYPNIKOva Olga USPENSKAYA Olga KHOKHLOva Dokuchaev Soil Science Institute of Russian Academy of Agricultural Sciences Pyzhevsky Lane7Moscow109017Russia Vegetable Institute of Russian Academy of Agricultural Sciences h.500v.VereaRamenskii distMoscow region140153Russia Institute of Physical Chemical and Biological Problems in Soil Science of RASUlitsa Institutskaya2PushchinoMoscow region142290Russia

Methodological problems of climatic reconstruction for different periods of Holocene are discussed on the basis of a multiple group biological analysis on peat-sapropel sediments. The possibility of biological analysis is exemplified by the paleoclimatic reconstruction for Carpathian and Altai Mountain ranges. For the ＂Skolevsky Beskidy＂ national park of Carpaty the paleoclimatic scenarios have been drown up aiming at the more precise definition of climatic conditions for the period of mass mountain slope terracing. The stability of terrace systems of various designs in the current climatic conditions has been assessed. It is shown that during periods of humid climate the terraces, whose designs have been focused on drainage, were built. In periods of dry and warm climate the terrace systems capable of accumulating water were built. Both these types of terrace systems are destroyed in nowadays. Only those terrace systems are stable which were adjusted by their builders to contrast variations of precipitation. For Western Altais the paleoclimatic scenario has been done to forecast the safety of the Bronze Age kurgans （burial earth mounds） with permafrost inside the construction. In the Altay region during the Holocene it has revealed two periods of sharp cooling, the peaks of which occurred in the intervals 4500- 4300 and 2500-2300 years pronounced climatic drying ago, and two periods of 4900-4700 and 130-70 years ago. Depletion of the algae composition in the layer corresponding to the last period of drying climate indicates a very sharp change in the parameters of moisture and turning the lake into a dry swamp. Periods of cold weather may have contributed to the formation of special ritual traditions of the Sakan tribes that require the frozen ground to bury the dead. The later climate fluctuations identified have not affected the safety of permafrost in burial mounds constructed in the V-III cc BC.

关键词： Climatic reconstruction Complex group biological analysis of peat-sapropel sediments Paleopedology Soil evolution Holocene

Axon degeneration:new actor in an old play

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Neural Regeneration Research 2023年第3期18卷 547-548页

作者： marina Herwerth Matthias T.Wyss Institute of Pharmacology and Toxicology University of ZurichNeuroscience Center ZurichUniversity and ETH ZurichZürichSwitzerland Institute of Neuronal Cell Biology Department of NeurologyTechnische Universität MünchenMunichGermany

After an insult of white matter tracts,*** the spinal cord or optic nerve,axons react in general by the activation of a tightly regulated self-destruction *** so-called axon degeneration cascade can be triggered by various causes,including injury,toxins,and genetic defects,and is a shared pathway in many different neurological diseases(Coleman and Hoke,2020).Axonal degeneration is thought to be responsible for disease progression and accumulation of disability across many neurological *** hallmark of early axonal injury is the appearance of local spheroid formations along the axon,often referred to as a“pearl-on-string”pattern or axonal beading or *** this striking shape change has been observed after various types of injury,such as mechanical,chemical,or inflammatory stimuli,we know little about its exact mechanism and its immediate impact on axonal *** this perspective,we would like to contrast the classical calcium-dependent form of axonal degeneration with a recently described form of a calcium-independent mechanism underlying axonal beading.

关键词： degeneration swelling injury

Ecological Niche Modelling Reveals the Peculiarities of Ecological Disjunction Between Two Sympatric Racerunners in Kazakhstan:Eremias lineolata(Nikolsky,1897)and Eremias scripta(Strauch,1867)

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Asian Herpetological Research 2023年第2期14卷 123-137页

作者： marina A.CHIRIKOva Dmitry V.MALAKHOV Institute of Zoology Committee of Scientific Ministry of Science and Higher EducationAl-Farabi 93 AkademgorodokAlmaty 050060Kazakhstan

The ecological-niche models for two sympatric species,Eremias lineolata(Nikolsky,1897)and Eremias scripta(Strauch,1867),reveal evidence of spatial and temporal disjunction in the actual niches of both *** lineolata demonstrates a wide range of adaptations and,at the same time,has a greater need for winter precipitation and minimal temperature than *** explanations for the thermal diversity of both species are *** variables(monthly temperatures,monthly solar radiation,etc.)are traditionally important for ectotherm ***,as many as half of the key variables in both species are related to different aspects of environmental water balance(precipitation,air humidity,vapor pressure).There are several ways in which moisture may impact the lizard’s life *** humidity is related to soil temperature and may be important during winter *** summer,soil humidity may support successful *** during the warm months is a key factor in maintaining the moisture content of the *** winter,snow cover provides a better thermal balance of the soil’s top layers where winter shelters are *** niche modeling(ENM)is an interdisciplinary approach combining the geographical,climatic,ecological,and biological aspects of the wellbeing of *** interdisciplinary approach lifts biological studies onto a new,integrative level,providing a comprehensive view on species biology and answering the questions that might not be answered if the traditional methods for studying animals were used alone.

关键词： ecology Kazakhstan niche modelling racerunners species distribution

From cortex to cord: motor circuit plasticity after spinal cord injury

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Neural Regeneration Research 2019年第12期14卷 2054-2062页

作者： Andrew R. Brown marina Martinez Département de Neurosciences Facultéde MédecineUniversitéde MontréalQuébecCanada H?pital du Sacré-Coeur de Montréal(CIUSS-NIM) MontréalQuébecCanada Groupe de Recherche sur le Système Nerveux Central Universitéde MontréalMontréalQuébecCanada

Spinal cord injury is associated with chronic sensorimotor deficits due to the interruption of ascending and descending tracts between the brain and spinal cord. Functional recovery after anatomically complete spinal cord injury is limited due to the lack of long-distance axonal regeneration of severed fibers in the adult central nervous system. Most spinal cord injuries in humans, however, are anatomically incomplete. Although restorative treatment options for spinal cord injury remain currently limited, research from experimental models of spinal cord injury have revealed a tremendous capability for both spontaneous and treatment-induced plasticity of the corticospinal system that supports functional recovery. We review recent advances in the understanding of corticospinal circuit plasticity after spinal cord injury and concentrate mainly on the hindlimb motor cortex, its corticospinal projections, and the role of spinal mechanisms that support locomotor recovery. First, we discuss plasticity that occurs at the level of motor cortex and the reorganization of cortical movement representations. Next, we explore downstream plasticity in corticospinal projections. We then review the role of spinal mechanisms in locomotor recovery. We conclude with a perspective on harnessing neuroplasticity with therapeutic interventions to promote functional recovery.

关键词： spinal cord injury motor cortex motor map corticospinal tract neuroplasticity functionalrecovery animal models forelimb hindlimb locomotion

Rickettsia influences thermotolerance in the whitefly Bemisia tabaci B biotype

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Insect Science 2011年第1期18卷 57-66页

作者： marina Brumin Svetlana Kontsedalov Murad Ghanim Department of Entomology Institute of Plant Protection the Volcani Center Bet Dagan Israel

The whitefly Bemisia tabaci harbors Portiera aleyrodidarum, an obligatory symbiotic bacterium, as well as several secondary symbionts, including Rickettsia, Hamiltonella, Wolbachia, Arsenophonus, Cardinium and Fritschea, the function of which is unknown. In Israel, Rickettsia is found in both the B and Q ofB. tabaci biotypes, and while all other secondary symbionts are located in the bacteriomes, Rickettsia can occupy most of the body cavity of the insect. We tested whether Rickettsia influences the biology of B. tabaci and found that exposing a Rickettsia-containing population to increasing temperatures significantly increases its tolerance to heat shock that reached 40~C, compared to a Rickettsia-free population. This increase in tolerance to heat shock was not associated with specific induction of heat-shock protein gene expression; however, it was associated with reduction in Rickettsia numbers as was assessed by quantitative real-time polymerase chain reaction and fluorescence in situ hybridization analyses. To assess the causes for thermotolerance when Rickettsia is reduced, we tested whether its presence is associated with the induction of genes required for thermotolerance. We found that under normal 25℃ rearing temperature, genes associated with response to stress such as cytoskeleton genes are induced in the Rickettsia-containing population. Thus, the presence of Rickettsia in B. tabaci under normal conditions induces the expression of genes required for thermotolerance that under high temperatures indirectly lead to this tolerance.

关键词： cytoskeleton gene expression heat shock symbiont

Charged Scalars in Transient Stellar Electromagnetic Fields

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Chinese Physics Letters 2011年第1期28卷 20-23页

作者： marina-Aura Dariescu Ciprian Dariescu Ovidiu Buhucianu Faculty of Physics A1. I. Cuza' University Bd. Carol I No. 11 700506 Iaoi Romania

We consider a non-rotating strongly magnetized object, whose magnetic induction is of the form Bx= Bo （t） sin kz. In the electromagnetic field generated by only one component of the four-vector potential, we solve the Klein- Gordon equation and discuss the sudden growth of the scalar wave functions for wavenumbers inside computable ranges. In the case of unexcited transversal kinetic degrees, we write down the recurrent differential system for the amplitude functions and compute the respective conserved eurrents.

关键词： Astrophysics and astroparticles

Evolution of anti-lgE treatment

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Cellular & Molecular Immunology 2016年第3期13卷 409-410页

作者： Cristoforo Incorvaia marina Mauro Allergy/Pulmonary Rehabilitation Istituti Clinici di Perfezionamento Hospital Milan Italy Allergy Unit Sant'Anna Hospital Como italy

The central role played by IgE antibodies in the pathophysiology of allergic diseases makes anti-IgE treatment of paramount importance. However, the development of anti-IgE drugs has taken more than two decades, from the first in vitro experiments in the 1970s to the availability of omalizumab as a safe and effective agent. Omalizumab was evaluated in a large number of studies following its approval by regulatory agencies for the treatment of severe allergic asthma not controlled by standard drug therapy.

关键词： OMALIZUMAB ASTHMA