Branching Ratio
Mostrando 1-12 de 30 artigos, teses e dissertações.
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1. A Greener Enzymatic Oligoesterification of Biobased Renewable Synthons
Polyesters of xylitol and succinic acid were prepared yielding from 70 to 75% by enzyme-catalyzed esterification using a molar mass from 1:1 to 2:5 at 120 and 140 °C employing from 1 to 10% m/m of enzyme. Control over branching degree was achieved by tuning the reaction conditions (temperature, time, comonomer ratio, enzyme content). This one-step process f
J. Braz. Chem. Soc.. Publicado em: 2021-06
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2. Growth dynamics of the branching system in grasses: an architecture-based methodology for quantitative evaluation applied to two genotypes of Paspalum vaginatum
Resumo Foi estudada a dinâmica do crescimento dos caules aéreos de Paspalum vaginatum, uma gramínea de ampla distribuição. Com o objetivo de identificar características diferenciais quantitativas entre dois genótipos, as plantas foram cultivadas ao ar livre em vasos durante dois verões consecutivos. Os eixos de diferentes ramificações foram marcado
Rodriguésia. Publicado em: 20/12/2019
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3. TNF-alpha increases angiogenic potential in a co-culture system of dental pulp cells and endothelial cells
Abstract We recently demonstrated that a co-culture system of human umbilical vein endothelial cells (HUVECs) and human dental pulp stem cells (hDPSCs) could enhance angiogenesis ability in vitro. However, whether tumor necrosis factor α (TNF-α) could promote blood vessel formation during pulp regeneration remained unknown. The aim of this study was to inv
Braz. oral res.. Publicado em: 28/10/2019
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4. ETHYLENE POLYMERIZATION WITH NICKEL DIIMINE COMPLEXES CONTAINING PSEUDOHALIDES
Nickel-diimine complexes DADNiX2 (DAD= 2,6-iPr2-C6H3-N=C(Me)-C(Me)=N-2,6-iPr2-C6H3) containing the non-chelating pseudo-halide ligands isothyocyanate and isoseleniumcyanate (X= NCS 1 and NCSe 2) were synthesized and used in ethylene polymerization activated by methyaluminoxane (MAO) at temperatures from 0 to 50°C. Polymerizations with these complexes were c
Quím. Nova. Publicado em: 2018-07
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5. The PIN1 family gene PvPIN1 is involved in auxin-dependent root emergence and tillering in switchgrass
Abstract Switchgrass (Panicum virgatum L.; family Poaceae) is a warm-season C4 perennial grass. Tillering plays an important role in determining the morphology of aboveground parts and the final biomass yield of switchgrass. Auxin distribution in plants can affect a variety of important growth and developmental processes, including the regulation of shoot an
Genet. Mol. Biol.. Publicado em: 2016-03
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6. O vértice D*Dp usando as regras de soma da QCD / The D*Dp vertex using the QCD sum rules
The particle physics have been studying topics like the Quark-Gluon Plasma (QGP), Higgs boson and dark matter, which require experiments in heavy-ion collisions. Therefore, accelerators capable of generate high energy particle beams are necessary and may generate new physics. When new data arise in the laboratories, new processes are necessary to explain thi
Publicado em: 2010
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7. Effect of Nd3 + concentration on the physical and absorption properties of sodium-lead-borate glasses
The effect of increasing the rare earth ion concentration on the physical and spectroscopic properties of Nd3 + doped sodium-lead-borate glasses have been studied for the compositions (10-x) Na2O-30PbO-60B2O3-xNd2O3, where x = 1.00, 1.25, 1.50, 1.75 and 2.00 mol %. Optical band gaps, cut-off wavelengths and various spectroscopic parameters (E¹, E², E³, F2
Brazilian Journal of Physics. Publicado em: 2007-12
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8. ComputaÃÃo dendrÃtica: uma abordagem de fÃsica estatÃstica
No campo da neurociÃncia computacional, a atividade elÃtrica dos neurÃnios à tradicionalmente modelada por equaÃÃes diferenciais nÃo-lineares acopladas, representando a evoluÃÃo do potencial de membrana e certas variÃveis relacionadas Ãs condutÃncias iÃnicas presentes no sistema. Uma tendÃncia recente consiste na extensÃo desta estratÃgia de
Publicado em: 2007
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9. Uma investigação sobre o decaimento semileptonico do Cascata Neutro no caso muônico e a sua observação
We report an investigation of the semileptonic decay ?0??+µ - ?µ. This decay was observed for the first time with nine identified events using the KTeV beam line and detector at Fermilab. The decay is normalized to the ?0 beta decay mode and yields a value for the ratio of decayrates G(?0??+µ - ?µ)/G(?0??+e- ?e) igual a ( 1,8+0,7-0,5(stat.) ± 0,2(syst.)
Publicado em: 2005
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10. Estudos de plasmas a altas temperaturas por espectroscopia visivel e ultravioleta no vacuo
In this thesis we present results on a wide variety of experiments related to magnetically confined plasma spectroscopy. We discuss the applicability of atomic models to our spectroscopy measurements, spectrometers absolute calibration, as well as the determination of many parameters of the plasma confined in the tokamak NOVA-UNICAMP. For these measurements,
Publicado em: 2003
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11. Tamanho, forma, alometria e crescimento em algumas especies de cecropia (Cecropiaceae) do Brasil
Size, form, allometry and growth were studied in some Cecropia species, from Amazonian and Southeastern BraziI. Architectural patterns and scaling of stem and crown was studied in five Amazonian species: Cecropia concolor, C. palmata, C. purpurascens, C. ulei and C. sciadophylla, in Manaus (AM); and in three Southeastern species Cecropia glaziovii, C. holole
Publicado em: 1999
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12. Novo limite superior para asa razão de decaimento radiativo / New upper limit for right wing of radioactive decay.
Nessa tese procuramos o decaimento radioativo raro - -. É um dos resultados da experiência E761 realizada no Proton Center do Fermilab, usando o feixe de híperons carregados com momento de 377 GeV/c. Medimos a fração deste feixe que é constituída de -, sendo esta (3,9 ±0,3)X10-5. Não encontramos sinal do decaimento radiativo - - e determinamos um no
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/12/1993