oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

4 ( 1 )

2019 ( 104 )

2018 ( 238 )

2017 ( 226 )

Custom range...

Search Results: 1 - 10 of 119910 matches for " Cunha Carlos Jorge da "
All listed articles are free for downloading (OA Articles)
Page 1 /119910
Display every page Item
O programa de gerenciamento dos resíduos laboratoriais do Depto de Química da UFPR
Cunha, Carlos Jorge da;
Química Nova , 2001, DOI: 10.1590/S0100-40422001000300023
Abstract: the laboratory waste management program of the chemistry department of ufpr started on 1997 and was developed to meet the requirements of co-processing in cement kiln and those of the respective regulation. the in-lab procedures for waste collection and treatment were devised taking into account their cost, simplicity and wide range of application to the various types of residues generated. the program works with a five step annual journey : 1) waste collection and treatment, 2) bulk storage, 3) licensing (for transportation and co-processing), 4) transportation and 5) co-processing.
O programa de gerenciamento dos resíduos laboratoriais do Depto de Química da UFPR
Cunha Carlos Jorge da
Química Nova , 2001,
Abstract: The Laboratory Waste Management Program of the Chemistry Department of UFPR started on 1997 and was developed to meet the requirements of co-processing in cement kiln and those of the respective regulation. The in-lab procedures for waste collection and treatment were devised taking into account their cost, simplicity and wide range of application to the various types of residues generated. The program works with a five step annual journey : 1) Waste collection and treatment, 2) Bulk Storage, 3) Licensing (for transportation and co-processing), 4) Transportation and 5) Co-processing.
Effects of hypertension on maternal adaptations to pregnancy: experimental study on spontaneously hypertensive rats
Pera?oli, José Carlos;Rudge, Marilza Vieira Cunha;Sartori, Maria Salete;Franco, Roberto Jorge da Silva;
Sao Paulo Medical Journal , 2001, DOI: 10.1590/S1516-31802001000200003
Abstract: context: animal models for essential hypertension have been used for understanding the human pathological conditions observed in pregnant hypertensive women. objective: to study the possible effects of pregnancy on hypertension and of hypertension on pregnancy in spontaneously hypertensive rats (shr), and in their normotensive wistar-kyoto (wky) counterparts. type of study: comparative study using laboratory animals. setting: animal research laboratory of clinical medicine at the medical school of botucatu, s?o paulo state university, brazil. sample: ten to twelve-week-old virgin female normotensive wistar-kyoto (wky) rats and spontaneously hypertensive rats (shr). the animals were separated into four groups: 15 pregnant spontaneously hypertensive rats (shr-p), 10 non-pregnant spontaneously hypertensive rats (shr-np), 15 pregnant normotensive rats (wky-p), and 10 non-pregnant normotensive rats (wky-np). main measurements: the blood pressure was evaluated by the tail cuff method, in rats either with or without prior training for the handling necessary for tail cuff measurements. the maternal volemia expansion was indirectly evaluated by weight gain, and by systemic parameters as hematocrit, hemoglobin, total protein, albumin and sodium retention. the perinatal outcome of pregnancy was evaluated by analysis of resorptions, litter size, rate of low weight and number of stillbirths. results: the late fall in blood pressure in the pregnant shr strain and in the normotensive wky strain can only be detected in rats previously trained to accept the handling necessary for the tail cuff measurement. during pregnancy the body weight gain was significantly higher in wky than in shr rats. systemic parameters were significantly lower in pregnant wky rats than in non-pregnant wky rats, while no differences were observed between pregnant and non-pregnant shr groups. in pregnant wky rats the sodium retention was higher from the 13th day onwards, while in shr rats this occurred only
Synthesis of enaminones with stationary stereochemistry
Wisniewski Junior Alberto,Oliveira Alfredo R.M.,Cunha Carlos Jorge da,Simonelli Fabio
Journal of the Brazilian Chemical Society , 1999,
Abstract: Five enaminones 4a-e derived from the reaction of 2,4,4-trimethyl-2-oxazoline anion with ethyl acetate, ethyl benzoate, ethyl cyclohexanoate, ethyl hexanoate and ethyl p-methyl benzoate, respectively, were obtained and characterized by 13C-NMR, 1H-NMR, FTIR, and mass spectral analysis. The enaminones 4a and 4b were also analysed by X-ray diffraction. Enaminone 4a crystallized in the monoclinic P2(1)/n space group with a = 9.1450(20) , b = 10.5150(20) , c = 9.5670 (20) , beta= 106.21(30)°, Z = 4. Enaminone 4b crystallized in the monoclinic P2(1)/c space group with a = 16.0520(30) , b = 26.0460(50) , c = 12.3520 (20) , beta = 111.900(30)°, Z = 4. All five enaminones were found to have an extensive pi electron delocalization and to have the same configuration where the double bond is trapped by an internal hydrogen bond between the NH and the C=O.
Synthesis of enaminones with stationary stereochemistry
Wisniewski Junior, Alberto;Oliveira, Alfredo R.M.;Cunha, Carlos Jorge da;Simonelli, Fabio;Marques, Francisco A.;
Journal of the Brazilian Chemical Society , 1999, DOI: 10.1590/S0103-50531999000500006
Abstract: five enaminones 4a-e derived from the reaction of 2,4,4-trimethyl-2-oxazoline anion with ethyl acetate, ethyl benzoate, ethyl cyclohexanoate, ethyl hexanoate and ethyl p-methyl benzoate, respectively, were obtained and characterized by 13c-nmr, 1h-nmr, ftir, and mass spectral analysis. the enaminones 4a and 4b were also analysed by x-ray diffraction. enaminone 4a crystallized in the monoclinic p2(1)/n space group with a = 9.1450(20) ?, b = 10.5150(20) ?, c = 9.5670 (20) ?, b= 106.21(30)°, z = 4. enaminone 4b crystallized in the monoclinic p2(1)/c space group with a = 16.0520(30) ?, b = 26.0460(50) ?, c = 12.3520 (20) ?, b = 111.900(30)°, z = 4. all five enaminones were found to have an extensive p electron delocalization and to have the same configuration where the double bond is trapped by an internal hydrogen bond between the nh and the c=o.
Defini??o da taxa de infiltra??o para dimensionamento de sistemas de irriga??o por aspers?o
Calheiros, Carlos B. M.;Tenório, Filipe J. C.;Cunha, Jorge L. X. L.;Silva, Edson T. da;Silva, Djair F. da;Silva, José A. C. da;
Revista Brasileira de Engenharia Agrícola e Ambiental , 2009, DOI: 10.1590/S1415-43662009000600001
Abstract: the aim of this research was to determine which technique is the most appropriate for the infiltration rate definition for the design of sprinkler irrigation systems. the water infiltration data was obtained according to a net having variable spaces between infiltration test points of 1.5, 3, 6, 12, 24, 48 and 96 m, summing 97 test points. the discussions of results obtained by means of definition techniques, i.e. mode, harmonic mean, median, geometric mean, and simple arithmetic mean, square mean, cubic mean and bisquare were based on a larger number of attributes, such as techniques for classical statistics and geostatistical analysis. the equation model for the infiltration rate used was the kostiakov. the simple arithmetic mean, which is considered the most used technique for definition of infiltration rate for sprinkler irrigation project, should not be used. the median and the geometric mean are the most recommended in sugar cane cultivation, however the median presented a higher number of desirable attributes. in the studied area, the adopted value of the infiltration rate for design must be between 30 and 44 mm h-1, when considering md ± s2 ().
Editorial
Jorge Luiz da Cunha
Educa??o : Revista do Centro de Educa??o UFSM , 2005,
Abstract:
Compensatory sweating after thoracoscopic sympathectomy: characteristics, prevalence and influence on patient satisfaction
Araújo, Carlos Alberto Almeida de;Azevedo, ítalo Medeiros;Ferreira, Maria Angela Fernandes;Ferreira, Hylas Paiva da Costa;Dantas, Jorge Lúcio Costa de Medeiros;Medeiros, Aldo Cunha;
Jornal Brasileiro de Pneumologia , 2009, DOI: 10.1590/S1806-37132009000300004
Abstract: objective: this prospective study aimed at investigating predictive factors for compensatory sweating after thoracoscopic sympathectomy. methods: from 2000 to 2002, 80 patients (53 females and 27 males) underwent thoracoscopic sympathectomy to treat hyperhidrosis. patient ages ranged from 12 to 56 years, and the mean post-operative follow-up period was 42.51 ± 5.98 months. patient satisfaction with the results was evaluated through the use of a rating scale. the procedure was performed bilaterally: at the t2 level for facial hyperhidrosis; at the t3-t4 level for axillary hyperhidrosis; and at the t3 level for palmar hyperhidrosis. results: post-operatively, 68 patients (85.0%) presented compensatory sweating, which was classified as mild in 23 (33.8%), moderate in 23 (33.8%) and severe in 22 (32.4%). considering the final surgical results, 70 patients (87.5%) were satisfied with the outcome of the operation, whereas 10 patients (12.5%) were dissatisfied. the level of patient satisfaction varied according to gender, age, body mass index (bmi) and extent of denervation. the compensatory sweating was more severe on the abdomen and back than on the legs. conclusions: although compensatory sweating, which is a common adverse effect of sympathectomy, occurred in the majority of cases, the level of patient satisfaction was high. the best candidates for thoracoscopic sympathectomy are young adult women with a bmi < 24.9 kg/m2.
Abla??o por cateter com radiofreqüência de vias acessórias esquerdas por abordagem transeptal
Silva, Márcio Augusto;Nadalin, Elenir;Kraemmer, Alessandro;Berardi, Gel Roberto Marmitt;Jorge, José Carlos Moura;Cunha, Cláudio L. Pereira da;
Arquivos Brasileiros de Cardiologia , 2006, DOI: 10.1590/S0066-782X2006000500002
Abstract: objective: to study a series of patients submitted to radiofrequency catheter ablation (rfa) of left accessory pathways (ap) using the transeptal approach (tsa) as compared to the conventional retrograde arterial approach (raa). methods: one hundred consecutive patients (56 male; mean age of 34.3 ± 11 years) with 100 left aps (62 overt and 38 concealed) underwent catheter ablation using the ts method (50 patients) and the ra method (50 patients) in an alternate fashion. the analysis was performed according to the intention-to-treat principle. results: the transeptal puncture was successfully performed in 48 patients (96%). this access allowed primary success in the ablation in all the patients without any complication. when we compared this approach with the raa there was no difference as regards the primary success (p = 0.2), recurrence rate (p = 1.0), fluoroscopy time (p = 0.63) and total time (p = 0.47). one patient in the raa group presented a vascular complication. the tsa allowed shorter ablation times (p=0.01) and smaller number of radiofrequency applications (p = 0.003) as compared to the conventional raa. the patients who had recurrence and unsuccessful ablation in the first session in each approach underwent another session with the opposite technique (cross-over), with a final ablation success rate of 100%. conclusion: the ts and ra approaches showed similar efficacy and safety for the ablation of left accessory pathways. the tsa allowed shorter ablation times and smaller number of radiofrequency applications. when the techniques were used in a complementary fashion, they increased the final efficacy of the ablation.
Photomultiplier nonlinear response in time-domain laser-induced luminescence spectroscopy
Schip, Leandro José Bossy;Buzelatto, Bruno Phelippe;Batista, Fábio Roberto;Cunha, Carlos Jorge da;Dias Jr., Lauro Camargo;Novo, Jo?o Batista Marques;
Química Nova , 2007, DOI: 10.1590/S0100-40422007000100034
Abstract: a new procedure to find the limiting range of the photomultiplier linear response of a low-cost, digital oscilloscope-based time-resolved laser-induced luminescence spectrometer (trls), is presented. a systematic investigation on the instrument response function with different signal input terminations, and the relationship between the luminescence intensity reaching the photomultiplier and the measured decay time are described. these investigations establish that setting the maximum intensity of the luminescence signal below 0.3v guarantees, for signal input terminations equal or higher than 99.7 ohm, a linear photomultiplier response.
Page 1 /119910
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.