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Asymptotics of Stationary Navier Stokes Equations in Higher Dimensions

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Acta Mathematica Sinica,English Series 2018年第4期34卷 598-611页

作者： Hao JIA Vladimír ?veráK Department of Mathematics University of Minnesota

We show that the asymptotics of solutions to stationary Navier Stokes equations in 4, 5 or 6 dimensions in the whole space with a smooth compactly supported forcing are given by the linear Stokes equation. We do not need to assume any smallness condition. The result is in contrast to three dimensions, where the asymptotics for steady states are different from the linear Stokes equation, even for small data, while the large data case presents an open problem. The case of dimension n = 2 is still harder.

关键词： Navier Stokes equations steady states asymptotics

Astrocyte evolution and human specificity

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Neural Regeneration Research 2023年第1期18卷 131-132页

作者： Carmen Falcone verónica Martínez-Cerdeño Department of Pathology and Laboratory Medicine UC Davis School of Medicine Institute for Pediatric Regenerative Medicine and Shriners Hospitals for Children of Northern California SacramentoCAUSA

The cerebral cortex is one of the most complex structures of the mammalian central nervous system and accounts for the extraordinary cognitive abilities in primates and *** the 19th century,neur ons have been believed to be the main players in the building of the brain,yet astrocytes also play a crucial role as fundamental building blocks of the cerebral cortex complexity.

关键词： cortex specificity cerebral

LIVING/CONTROLLED GRAFTING FROM POLYMER MICROSPHERES

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Chinese Journal of Polymer Science 2003年第6期21卷 639-651页

作者： Harald D. H. Stver Dept. of Chemistry McMaster University Hamilton ON L8S 4MI Canada

A review is given of grafting-from methods using living polymerizations, with emphasis on grafting from polymermicrospheres using ATRP.

关键词： Living controlled polymerization Grafting ATRP Microspheres

Inferring topological transitions in pattern-forming processes with self-supervised learning

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npj Computational Materials 2022年第1期8卷 1970-1981页

作者： Marcin Abram Keith Burghardt Greg ver Steeg Aram Galstyan Remi Dingreville Department of Physics and Astronomy University of Southern CaliforniaLos AngelesCA90089USA Information Sciences Institute University of Southern CaliforniaMarina del ReyCA90292USA Center for Integrated Nanotechnologies Nanostructure Physics DepartmentSandia National LaboratoriesAlbuquerqueNM87185USA

The identification of transitions in pattern-forming processes are critical to understand and fabricate microstructurally precise materials in many application *** supervised methods can be useful to identify transition regimes,they need labels,which require prior knowledge of order parameters or relevant microstructures describing these ***,we develop a self-supervised,neural-network-based approach that does not require predefined labels about microstructure classes to predict process parameters from observed *** show that assessing the difficulty of solving this inverse problem can be used to uncover microstructural *** demonstrate our approach by automatically discovering microstructural transitions in two distinct pattern-forming processes:the spinodal decomposition of a two-phase mixture and the formation of binary-alloy microstructures during physical vapor deposition of thin *** approach opens a path forward for discovering unseen or hard-to-discern transitions and ultimately controlling complex pattern-forming processes.

关键词： alloy microstructure transitions

A Rapid Parameter of Enzyme-Treated Cellulosic Material Revealed by Reducing Sugar Release

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Journal of Renewable Materials 2024年第3期12卷 539-551页

作者： verônica Távilla Ferreira Silva Adriane Maria Ferreira Milagres Departamento de Biotecnologia Escola de Engenharia de LorenaUniversidade de São PauloLorenaSP12602-810Brazil

This study was conducted to evaluate the effectiveness of enzymes in purifying and reducing the degree of polymerization of cellulose for the production of dissolving *** goal was to determine the contributions of xylanase(X)and endoglucanase(EG)in the treatment of pulp,specifically by quantifying the formation of soluble and insoluble reducing sugars using the dinitrosalycilic acid(DNS)***,the release of soluble reducing sugars(RSSol)was enhanced after xylanase treatment,while endoglucanase(EG)treatment led to changes in insoluble reducing sugars(RSIns).The maximum synergism was observed for RSIns when a high ratio of endoglucanase to xylanase(320EG:5X/g pulp)was *** relative contribution of endoglucanase to RSins was determined to be 15.6%of the total reducing *** viscosity of pulps treated with xylanase decreased only by 7%,whereas endoglucanase treatment significantly reduced viscosity by 45%.Modifications in the particle size were observed after pulp treatment with the combination of endoglucanase and *** summary,the DNS test is a rapid and effective method for evaluating the efficiency of enzyme treatments on *** measurement of RSIns correlates with changes in pulp viscosity to different extents,providing valuable insights into the effectiveness of enzyme treatments.

关键词： Endoglucanase xylanase cellulose fiber pulp synergism

The First Photometric Study of W UMa Binary System V1833 Ori

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Research in Astronomy and Astrophysics 2022年第8期22卷 260-271页

作者： Mehmet Tanr?ver Ahmet Bulut Astronomy and Space Science Science Faculty University of Erciyes Erciyes University Astronomy and Space Science Observatory Application and Research Center Department of Physics Faculty of Arts and Sciences ?anakkale Onsekiz Mart University Terzioglu Campus Astrophysics Research Center and Observatory ?anakkale Onsekiz Mart University Terzioglu Campus

The first photometric solution in the B,V,Rcand Icfilters of the short period V1833 Ori eclipsing binary is presented based on new ground-based CCD photometric *** analyzed the BVRI photometric light curves of the system,using PHOEBE 0.31 a,a binary star modeling program,with the Wilson-Devinney method based on Roche geometry to achieve the best accordance with the photometric observations to determine their absolute parameters from the light *** updated the ephemeris of V1833 Ori using two new light curve minima derived by our new observational data from those collected in the literature and analyzed the change of the system’s orbital *** O-C analysis indicates that the variations of the orbital period of V1833 Ori with time are increasing at a rate of 3.03 ×10-7days *** distance of V1833 Ori is 173.7 ± 15.6 *** the solutions,we find that V1833 Ori is an A-subtype W UMa overcontact binary with q=0.701 mass ratio and f=1.14 fill-out *** HR diagram positions of the eclipsing binary system’s components are *** system’s absolute dimensions were compared to those of similar binaries in the log Teff-log L,logM-logL,1 ogM-logR and logM-log J0diagrams.

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Plant Oil-Based Waterborne Polyurethanes: A Brief Review

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Journal of Renewable Materials 2020年第6期8卷 579-601页

作者： verónicaL.Mucci M.E.Victoria Hormaiztegui Mirta I.Aranguren Instituto de Investigaciones en Ciencia y Tecnología de Materiales(INTEMA) Universidad Nacional de Mar del Plata(UNMdP)-Consejo Nacional de Investigaciones en Ciencia y Tecnología(CONICET)Facultad de IngenieríaMar del PlataCP 7600Argentina Centro de Investigación y Desarrollo en Ciencia y Tecnología de Materiales(CITEMA) Universidad Tecnológica Nacional(UTN)Comisión de Investigaciones Científicas de la Provincia de Buenos Aires(CIC)Facultad Regional La PlataBerissoCP 1923Argentina

The increasing pressure from consumers and policy makers to reduce the use of synthetic polymers,whose production contributes to the depletion of non-renewable resources and are usually non-biodegradable,has prompted the efforts to find suitable bio-based sources for the production of *** oils have been a frequently spotted in this search because they are versatile,highly available and a low cost liquid biosource,which can be used in the synthesis of a wide plethora of different polymers and reactive *** the same idea of reducing the environmental stress,the traditional polyurethanes that are soluble in organic solvents have been targeted for replacement,particularly in applications such as adhesives and coatings,in which the solvent is released to the atmosphere increasing the air ***,waterborne polyurethanes(WBPU),which are polyurethane dispersions(PUD)prepared in aqueous media,release benign water to the atmosphere during use as supported or self-standing films for different *** this brief review,the contributions to the development of WBPUs based on vegetable oils are discussed,focusing mainly on the contributions of the last *** synthesis of ionic and nonionic PUDs,their characterization and the properties of the resulting dried materials,as well as derived composite materials are considered.

关键词： Vegetable oils polyurethane dispersions(PUD) waterborne polyurethane(WBPU) biopolyols biopolyurethanes coatings adhesives ink binders

Cytokines in the BALB/c mouse testis in various conditions

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Asian Journal of Andrology 2001年第1期3卷 9-19页

作者： E.verjnkorva M.Martikainen P.Pllnen Department of Anatomy University of Turku FIN-20520 Turku FinlandDepartment of Anatomy University of Turku FIN-20520 Turku FinlandDepartment of Anatomy and Department of Obstetrics and Gynecology University of Turku FIN-20520 Turku Finland

Aim: To investigate whether testosterone, estrogens, vasectomy, experimental cryptorchidism, varicocele or agingwould induce changes in the cytokine environment of the mouse testis. Methods: In adult male BALB/c mice,testosterone implants, estradiol benzoate, vasectomy, unilateral cryptorchidism, unilateral varicocele were adminis-tered/performed. The mice were followed up for different periods of time and were then sacrificed with testes incisedfor examination. The control mice received the vehicle or sham-operation. Results: IL-10 was present in Leydigcells of nearly every testis and IL-10 + macrophages in 39% of testes. IL-6 was found in the testes of intact adultmice, mice treated with testosterone for 70 days, cryptorchid testes and sham-operated testes. Conclusion: Resultssuggest that IL-10 might be involved in the generation of the immunologically privileged microenvironment in the testis.(Asian J Androl 2001 Mar; 3: 9-19)

关键词： testosterone vasectomy estrogens cryptorchidism abdominal testis varicocele cyokines IL-10 macrophages clonal anergy

Pure and mixed plantations of Persian walnut (Juglans regia L.) for high quality timber production in Chile, South America

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Journal of Plant Ecology 2020年第1期13卷 12-19页

作者： verónica Loewe-Muñoz Mónica Balzarini Marta Ortega González Chilean Forest Institute(INFOR) Metropolitan OfficeSucre 2397ÑuñoaSantiagoChile CONICET Biometry Unit College of AgricultureUniversidad Nacional de CórdobaCiudad UniversitariaCC509CP 5000CórdobaArgentina Chilean Forest Institute(INFOR) Biobío OfficeCamino a Coronel Km 7.5San Pedro de la PazConcepciónChile

Aims Persian walnut(Juglans regia L.),an interesting forest species for the veneering industry,requires adequate management to produce valuable high-quality *** species associations and management level can improve stand productivity,the novelty of this work was to assess Persian walnut performance in different planting mixtures and in pure plantations conditioned to management *** Growth,straightness and survival measurements were taken annually for 7 years after planting pure and mixed plantations under two contrasting management *** were recorded at Age 7 in all *** each management intensity,besides the monoculture,three mixtures were tested:a mixture of only main forest species,main forest species plus one arboreal companion species,Black alder(Alnus glutinosa L.)and main species plus the shrub Russian olive(Elaeagnus angustifolia L.)as nurse species.A test of interaction between plantation type and management scenario was conducted using repeated growth *** Findings The interaction was significant,indicating the presence of different mechanisms underlying plantation effects under high and low management *** with pure plantations,Persian walnut associated with the nurse shrub exhibited 78%higher height and 53%higher diameter growth in plantations under low *** benefits(lower presence of walnut blight than in the monoculture)and better straightness were also found in the association including the shrub when the management intensity was not *** beneficial effects in the presence of Russian olive were not present under high management intensity(irrigation,fertilization,tutoring and frequent pruning).Site-specific designs for Persian walnut plantations would depend on the foreseen management intensity.

关键词： noble wood monoculture forest associations companion species Russian olive