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Neural Regeneration Research 2025年第11期20卷 3179-3192页

作者： Pieter-jan Serneels Julie D.De Schutter Lies De Groef Lieve Moons Steven Bergmans kU Leuven Leuven Brain InstituteDepartment of BiologyAnimal Physiology and Neurobiology DivisionNeural Circuit Development&Regeneration Research GroupLeuvenBelgium kU Leuven Leuven Brain InstituteDepartment of BiologyAnimal Physiology and Neurobiology DivisionCellular Communication&Neurodegeneration Research GroupLeuvenBelgium

Decades of research asserted that the oligodendroglial lineage comprises two cell types:oligodendrocyte precursor cells and ***,recent studies employing single-cell RNA sequencing techniques have uncovered novel cell states,prompting a revision of the existing *** forward,the oligodendroglial lineage should be delineated into five distinct cell states:oligodendrocyte precursor cells,committed oligodendrocyte precursor cells,newly formed oligodendrocytes,myelin-forming oligodendrocytes,and mature *** new classification system enables a deeper understanding of the oligodendroglia in both physiological and pathological *** this uniform terminology will facilitate comparison and integration of data across ***,including the consolidation of findings from various demyelinating models,is essential to better understand the pathogenesis of demyelinating ***,comparing injury models across species with varying regenerative capacities can provide insights that may lead to new therapeutic strategies to overcome remyelination ***,by standardizing terminology and synthesizing data from diverse studies across different animal models,we can enhance our understanding of myelin pathology in central nervous system disorders such as multiple sclerosis,Alzheimer's disease,and amyotrophic lateral sclerosis,all of which involve oligodendroglial and myelin dysfunction.

关键词： animal models demyelination fish mammals multiple sclerosis myelin neurodegeneration oligodendrocytes oligodendroglial lineage remyelination

Impact of atmospheric turbulence on coherent beam combining for laser weapon systems

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Defence Technology（防务技术） 2021年第4期17卷 1160-1167页

作者： jan k.Jabczyński Przemysław Gontar Military University of Technology Gen.S.Kaliskiego 2Warsaw00-908Poland

The performance of a laser weapon system based on coherent beam combining(CBC)depends on its propagation properties in the *** this study,an analytical model based on partial coherent beam combining(PCBC)for assumed coherence coefficients between beams in a CBC lattice was *** kolmogorov model of atmospheric turbulence and the Hufnagel-valley model of C^(2)_(n) dependence on atmospheric parameters were *** simplified metrics were proposed to assess the CBC *** beam profiles(super-Gaussian,truncated Gaussian,etc.)and geometries were analyzed in terms of maximal intensity in the far *** approximate formula for PCBC efficiency dependent on the Fried radius was *** results of CBC modeling were compared to those of the Gaussian beam propagation model in a turbulent *** dependence of CBC performance on the C^(2)_(n) parameter,range,and elevation angle was *** could be concluded that the application of CBC for medium and long range propagation is impractical without an effective adaptive optics system.

关键词： Laser beams Beam combining Coherence Atmosphere turbulences

New wormhole model with quasi-periodic oscillations exhibiting conformal motion in f(T,T)gravity

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Communications in Theoretical Physics 2023年第9期75卷 59-68页

作者： G Mustafa Abdelghani Errehymy S k Maurya Munsif jan Department of Physics Zhejiang Normal UniversityJinhua 321004China Astrophysics Research Centre School of MathematicsStatistics and Computer ScienceUniversity of KwaZulu-NatalPrivate Bag X54001Durban 4000South Africa Laboratory of High Energy Physics and Condensed Matter Department of PhysicsFaculty of Sciences Aïn ChockHassan II University of CasablancaB.P.5366 MaarifCasablanca 20100Morocco Department of Mathematical and Physical Sciences College of Arts and ScienceUniversity of NizwaNizwaOman New Uzbekistan University Mustaqillik Ave.54Tashkent 100007Uzbekistan

This analysis explores the new wormhole(WH)solution in the background of teleparallel gravity with minimal matter *** complete this study,we consider the conformal symmetry with non-zero killing *** exact shape function is computed by considering the linear equation of state with the phantom *** energy conditions are investigated for the calculated shape function with the equation of state *** presence of exotic matter is confirmed due to the violation of the null energy *** current study also explores the physical properties of the epicyclic frequencies with quasi-periodic *** the astrophysical,epicyclic frequencies are extensively employed to explore the self-gravitating *** is concluded that a stable WH solution is acceptable for WH geometry.

关键词： extended teleparallel theory wormhole solutions epicyclic frequencies conformal symmetry

Can Crossref Citations Replace Web of Science for Research Evaluation?The Share of Open Citations

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Journal of Data and Information Science 2020年第4期5卷 35-42页

作者： TomášChudlarský jan Dvořák Czech Technical University in Prague Computing and Information CentreJugoslávských partyzánů3CZ-16000 Praha 6Czech Republic Charles University Institute of Information Studies and LibrarianshipNa Příkopě29CZ-11000 Praha 1Czech Republic

Purpose:We study the proportion of Web of Science(WoS)citation links that are represented in the Crossref Open Citation Index(COCI),with the possible aim of using COCI in research evaluation instead of the WoS,if the level of coverage was ***/methodology/approach:We calculate the proportion on citation links where both publications have a WoS accession number and a DOI simultaneously,and where the cited publications have had at least one author from our institution,the Czech Technical University in *** attempt to look up each such citation link in ***:We find that 53.7%of WoS citation links are present in the *** proportion varies largely by *** total figures differ significantly from 40%in the large-scale study by van Eck,Waltman,Larivière,and Sugimoto(blog 2018,https://***/blog?article=n-r2s234).Research limitations:The sample does not cover all science areas uniformly;it is heavily focused on Engineering and Technology,and only some disciplines of Natural Sciences are ***,this reflects the real scientific orientation and publication profile of our *** implications:The current level of coverage is not sufficient for the WoS to be replaced by COCI for research ***/value:The present study illustrates a COCI vs WoS comparison on the scale of a larger technical university in Central Europe.

关键词： Open citations Crossref Open Citation Index Web of Science Current Research Information System

The effect of climate factors on the size of forest wildfires(case study:Prague-East district,Czech Republic)

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Journal of Forestry Research 2022年第4期33卷 1291-1300页

作者： Zohreh Mohammadi Peter Lohmander jan kašpar Roman Berčák Jaroslav Holuša Robert Marušák Faculty of Forestry and Wood Sciences Czech University of Life Sciences PragueKamýcká12916500 Praha-SuchdolCzech Republic Optimal Solutions in Cooperation with Linnaeus University UmeaSweden

This paper presents a new approach to identifying the climate variables that influence the size of the area burned by forest *** linear regression was used in combination with nonlinear variable transformations to determine relevant nonlinear forest wildfire size *** from the Prague-East District of the Czech Republic was used for model *** burned forest area was hypothesized as a function of water vapor pressure,air temperature and wind *** speed was added to enhance predictions of the size of forest wildfires,and further improvements to the utility of prediction methods were added to the regression *** results show that if the air temperature increases,it may contain less water and the fuel will become *** size of the burned area then *** the relative humidity in the air increases and the wind speed decreases,the size of the burned area is *** model suggests that changes in the climate factors caused by ongoing climate change could cause significant changes in the size of wildfire in forests.

关键词： Climatic variables Burned forest area Climate change Multiple linear regression

Fecal microbiome of growing pigs fed a cereal based diet including chicory(Cichorium intybus L.) or ribwort(Plantago lanceolata L.) forage

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Journal of Animal Science and Biotechnology 2016年第2期7卷 167-175页

作者： Johan Dicksved janet k.jansson jan Erik Lindberg Department of Animal Nutrition and Management Swedish University of Agricultural Sciences Department of Microbiology Swedish University of Agricultural Sciences Division of Biology Earth and Biological Sciences Pacific Northwest National Laboratories

Background： The purpose of this study was to investigate how inclusion of chicory forage or ribwort forage in a cereal-based diet influenced the fecal microbial community（microbiome） in newly weaned（35 days of age） *** piglets were fed a cereal-based diet without（B） and with inclusion（80 and 160 g/kg air-dry forage） of vegetative shoots of chicory（C） and leaves of ribwort（R） forage in a 35-day growth trial. Fecal samples were collected at the start（D0）, 17（D17） and 35（D35） days after weaning and profiles of the microbial consortia were generated using terminal restriction fragment length polymorphism（T-RFLP）. 454-FLX pyrosequencing of 16 S r RNA gene amplicons was used to analyze the microbial composition in a subset of the samples already analyzed with ***： The microbial clustering pattern was primarily dependent on age of the pigs, but diet effects could also be observed. Lactobacilli and enterobacteria were more abundant at D0, whereas the genera Streptococcus, Treponema,Clostridium, Clostridiaceae1 and Coprococcus were present in higher abundances at D35. Pigs fed ribwort had an increased abundance of sequences classified as Treponema and a reduction in lactobacilli. However, the abundance of Prevotellaceae increased with age in on both the chicory and the ribwort diet. Moreover, there were significant correlations between the abundance of Bacteroides and the digested amount of galactose, uronic acids and total non-starch polysaccharides, and between the abundance of Bacteroidales and the digested amount of ***： This study demonstrated that both chicory and ribwort inclusion in the diet of newly weaned pigs influenced the composition of the fecal microbiota and that digestion of specific dietary components was correlated with species composition of the microbiota. Moreover, this study showed that the gut will be exposed to a dramatic shift in the microbial community structure several weeks after weaning.

关键词： Amplicon sequencing Chicory Microbiome Ribwort Uronic acid Weaning 16S

Non-compliant and compliant balloons for endovascular rescue therapy of cerebral vasospasm after spontaneous subarachnoid haemorrhage: experiences of a single- centre institution with radiological follow- up of the treated vessel segments

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Stroke & vascular Neurology 2021年第1期6卷 16-24页

作者： Alexander Neumann jan küchler Claudia Ditz kara krajewski jan Leppert Peter Schramm Hannes Schacht Neuroradiology University Medical Center Schleswig Holstein Lubeck CampusLubeckGermany Neurosurgery University Medical Center Schleswig Holstein Lubeck CampusLubeckGermany

Background For endovascular rescue therapy(ERT)of cerebral vasospasm(CVS)due to spontaneous subarachnoid haemorrhage(sSAH),non-compliant(NCB)and compliant(CB)balloons are used with both balloon types bearing the risk of vessel injury due to specific mechanical *** severe delayed arterial narrowing after transluminal balloon angioplasty(TBA)for CVS has sporadically been described,valid data concerning incidence and relevance are *** aim was to analyse the radiological follow-up(RFU)of differently TBA-treated arteries(CB or NCB).Methods Twelve patients with utilisation of either NCB or CB for CVS were retrospectively analysed for clinical characteristics,ERT,functional outcome after 3 months and *** with the initial angiogram,we classified delayed arterial narrowing as mild,moderate and severe(60% calibre reduction).Results Twenty-three arteries were treated with CB,seven with *** median first RFU was 11 months after TBA with CB and 10 after *** was performed with catheter angiography in 18 arteries(78%)treated with CB and in five(71%)after NCB;magnetic resonance angiography was acquired in five vessels(22%)treated with CB and in two(29%)after *** arterial narrowing was detected in three arteries(13%)after CB and in one(14%)after *** or severe findings were neither detected after use of CB nor *** We found no relevant delayed arterial narrowing after TBA for CVS after *** previous assumptions that CB provides for more dilatation in segments adjacent to CVS,we observed no disadvantages concerning long-term adverse *** data support TBA as a low-risk treatment option.

关键词： balloon cerebral after

The role of zonal flows in reactive fluid closures

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Plasma Science and Technology 2018年第7期20卷 41-49页

作者： jan weiland Chalmers University of Technology and EURATOM-VR Association SE-41296 GothenburgSweden

We will give an overview of results obtained by our reactive fluid model. It is characterised as a fluid model where all moments with sources in the experiment are kept. Furthermore, full account is taken for the highest moments appearing in unexpanded denominators also including full toroidicity. It has been demonstrated that the strength of zonal flows is dramatically larger in reactive fluid closures than in those which involve dissipation. This gives a direct connection between the fluid closure and the level of excitation of turbulence. This is because zonal flows are needed to absorb the inverse cascade in quasi 2D turbulence. This also explains the similarity in structure of the transport coefficients in our model with a reactive closure in the energy equation and models which have a reactive closure because of zero ion temperature such as the Hasegawa-Wakatani model. Our exact reactive closure unifies several well-known features of tokamak experiments such as the L-H transition, internal transport barriers and the nonlinear Dimits upshift of the critical gradient for onset of transport. It also gives transport of the same level as that in nonlinear gyrokinetic codes. Since these include the kinetic resonance this confirms the validity of the thermodynamic properties of our model. Furthermore, we can show that while a strongly nonlinear model is needed in kinetic theory a quasilinear model is sufficient in the fluid description. Thus our quasilinear fluid model will be adequate for treating all relevant problems in bulk transport. This is finally confirmed by the reproduction by the model of the experimental power scaling of the confinement time Te ~ P-2/3. This confirms the validity of our reactive fluid model. This also gives credibility to our ITER simulations including the H-mode barrier. A new result is here, that alpha heating strongly reduces the slope of the H-mode barrier. This should significantly reduce the effects of ELM＇s.

关键词： turbulent transport improved mixing length estimates zonal flows toroidicity

Mathematical Modelling and Experimental Investigation of Gas Flow in Minichannels and Microchannels

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Journal of Thermal Science 2010年第4期19卷 289-294页

作者： jan Vimmr Hynek klterka Marek Hajzman Martin Luxa Rudolf Dvork University of West Bohemia Faculty of Applied SciencesDepartment of MechanicsUniverzitni 22CZ-306 14 Pilsen Czech Republic University of West Bohemia Faculty of Mechanical EngineeringDepartment of Power System EngineeringUniverzitni 22CZ-306 14 PilsenCzech Republic Institute of Thermomechanics of Academy of Sciences of the Czech Republic Department of Fluid Dynamics Dolejskova 5CZ-182 00 PragueCzech Republic

The first part of this study is focused on the numerical modelling and experimental investigation of transonic flow through a 2D model of the male rotor-housing gap in a dry screw *** simulations of the clearance flow are performed with the help of the in-house compressible Navier-Stokes *** measurements based on the Schlieren method in Toepler configuration are carried *** objective of the second part of the study is to derive the analytical solution of gas microflow development in a gap between two parallel *** microflow is assumed to be laminar,incompressible and the velocity slip boundary conditions are considered at the *** constant velocity profile is prescribed at the *** the mathematical description of the problem,the Oseen equation is *** analytical results are compared with the numerical ones obtained using the developed incompressible Navier-Stokes solver including the slip flow boundary conditions.

关键词： clearance gap transonic flow compressible Navier-Stokes solver mieroflow development Oseen flow model analytical solution incompressible Navier-Stokes solver