Non Linear Reactivity
Mostrando 1-9 de 9 artigos, teses e dissertações.
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1. Cinética pontual com realimentação de temperatura considerando um grupo de precursores de nêutrons atrasados
Recentemente, surgiu na literatura uma solução analítica das equações de cinética pontual que considera a reatividade como função do tempo, utilizando o método da decomposição. O presente trabalho dá um passo a frente, considerando as equações de cinética pontual em conjunto com efeitos de realimentação de temperatura. Mas, primeiro, uma bre
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2011
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2. Organização molecular no sistema quitinoso das conchas resquiciais de Loligo brasiliensis
The chitin system of Loligo brasiliensis pen was studied through electrophoresis, topochemical tests i}nd polarization microscop Pen sectionspresent intense reactivity to xylidine ponceau, sirius red and picrosirius stains, as well as exhibit increases in birefringence and conspicuous extrinsic linear dichroism under polarized light, what suggests on the exi
Publicado em: 1989
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3. Effects of hypothyroidism on bronchial reactivity in non-asthmatic subjects.
The effect of hypothyroidism on non-specific bronchial reactivity was studied in 11 patients without pulmonary disease (mean age 40 (SD 13) years) who had had a total thyroidectomy and radioiodine treatment for thyroid cancer 41 (36) months before the study. All patients when mildly hyperthyroid while having long term thyroxine replacement treatment and once
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4. Analysis of bronchial reactivity in epidemiological studies.
The measurement of bronchial reactivity in epidemiological studies has the advantage of quantifying an objective physiological feature of asthma. Bronchial reactivity was developed in a clinical setting and has been conventionally expressed as the dose of agonist producing a 20% fall in FEV1 (PD20). As PD20 can be estimated for less than 20% of subjects in g
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5. Blood flow reactivity to hypercapnia in strictly unilateral carotid disease: preliminary results.
To show relationship between degree of carotid arterial stenosis and cerebral blood flow reactivity (RES%) to induced hypercapnia, fluorine-18-fluoromethane and positron emission tomography (PET) was used to study 18 patients with carotid distribution transient ischaemic attacks (TIA), all free of stroke, who had angiographic-proven unilateral arterial disea
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6. Seasonal variation in non-specific bronchial reactivity: a study of wheat workers with a history of wheat associated asthma.
To investigate seasonal variation in non-specific bronchial reactivity in wheat workers, we carried out histamine inhalation tests in 29 workers (28 of them men) from a small farming community with symptoms of wheat associated asthma before, during and after the 1983-4 Australian wheat harvest season. Four were cigarette smokers, and the age range was 12-54
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7. The intercellular adhesin involved in biofilm accumulation of Staphylococcus epidermidis is a linear beta-1,6-linked glucosaminoglycan: purification and structural analysis.
The primary attachment to polymer surfaces followed by accumulation in multilayered cell clusters leads to biofilm production of Staphylococcus epidermidis, which is thought to contribute to virulence in biomaterial-related infections. We purified a specific polysaccharide antigen of biofilm-producing S. epidermidis 1457 and RP62A, which was recently shown t
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8. The Major Neutralizing Antibody Responses to Recombinant Anthrax Lethal and Edema Factors Are Directed to Non-Cross-Reactive Epitopes▿ †
Anthrax lethal and edema toxins (LeTx and EdTx, respectively) form by binding of lethal factor (LF) or edema factor (EF) to the pore-forming moiety protective antigen (PA). Immunity to LF and EF protects animals from anthrax spore challenge and neutralizes anthrax toxins. The goal of the present study is to identify linear B-cell epitopes of EF and to determ
American Society for Microbiology (ASM).
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9. Alteration of V3 loop context within the envelope of human immunodeficiency virus type 1 enhances neutralization.
Neutralization of a chimeric human immunodeficiency virus (HIV) type 1, containing the V3 loop of the MN isolate substituted within the HXB2 envelope, was enhanced up to 20-fold compared with the HXB2 or MN parental isolates by human HIV-positive sera. MN V3 loop-specific monoclonal antibodies were better able to recognize the chimeric virus compared with MN