scholarly journals CARACTERIZAÇÃO HIDRÁULICA DE GOTEJADORES AUTOCOMPENSANTES EXPOSTOS À APLICAÇÃO DINÂMICA DE CLORO LIVRE (Parte II)

Irriga ◽  
2008 ◽  
Vol 13 (3) ◽  
pp. 411-425
Author(s):  
Rubens Duarte Coelho ◽  
Marconi Batista Teixeira ◽  
Ralini Ferreira de Melo ◽  
Meiby Carneiro de Paulo
Keyword(s):  
Flow Rate ◽  
Gravimetric Method ◽  
Sao Paulo ◽  
Free Chlorine ◽  
São Paulo ◽  
Rate Reduction ◽  
Linear Effect ◽  
The University ◽  
Effect Of Chlorine

CARACTERIZAÇÃO HIDRÁULICA DE GOTEJADORES AUTOCOMPENSANTES EXPOSTOS À APLICAÇÃO DINÂMICA DE CLORO LIVRE (Parte II)  Rubens Duarte Coelho1; Marconi Batista Teixeira1; Ralini Ferreira de Mélo1; Meiby Carneiro de Paula21Departamento de Engenharia Rural, Escola Superior de Agricultura Luiz de Queiroz, Universidade de São Paulo, Piracicaba, SP,  [email protected] genético e reprodução animal, IAPAR – Estação Experimental da Faz. Modelo, Ponta Grossa, PR  1 RESUMO Este trabalho teve como objetivo avaliar a caracterização hidráulica de 14 modelos de gotejadores autocompensantes, quanto ao efeito do cloro na redução de vazão, causada pela aplicação dinâmica de 100 mg L-1 de cloro livre, e o efeito linear de redução de vazão para dosagens e tempos de aplicação calculados a partir da dosagem padrão de 100 mg L-1 de cloro livre. Utilizou-se uma bancada de ensaios em estrutura metálica com 11,0 m x 4,0 m, instalada no Laboratório de Irrigação do DER– ESALQ/USP. Semanalmente, foi feita a coleta de água utilizando o método gravimétrico para todos os emissores presentes na linha gotejadora de cada um dos modelos estudados. Os modelos de gotejadores ensaiados apresentaram sensibilidade variável à aplicação de cloro livre. Ocorreu um decréscimo de 10 a 20% em média da vazão (L h-1) para a maior parte dos emissores, com exceção do modelo E que apresentou aproximadamente 90% de redução de vazão com 2688 h de funcionamento e redução drástica de vazão na ordem de 100% em virtude do bloqueio total do orifício para o emissor I. Embora o efeito da dosagem de cloro tenha sido linear, não se observaram alterações na vazão dos gotejadores com a aplicação de 10 mg L-1 de cloro livre. UNITERMOS: cloração, emissores autocompensantes, entupimento de emissores.  COELHO, R. D.; TEIXEIRA, M. B.; MÉLO, R. F. de; PAULA, M. C. de. HYDRAULIC CHARACTERIZATION OF COMPENSATING EMITTERS EXPOSED TO FREE CHLORINE DYNAMIC APPLICATION (PART II)  2 ABSTRACT The objective of this work was to evaluate the hydraulic characterization of 14 compensating emitters regarding the effect of chlorine on the reduction of the flow rate and the linear effect of flow rate reduction at different times and dosages. The reduction of the flow rate was caused by the dynamic application of 100 mg L-1 of free chlorine. The experiment was carried out under laboratory conditions in a metal bench (11.0 m x 4,.0 m) at the University of São Paulo Brazil. Emitter flow was evaluated weekly using the gravimetric method. The studied emitter models presented varying sensitivity to the application of free chlorine. An average reduction of 10 to 20% in the flow rate (L h-1) for most   emitters was observed. The “E” model presented a reduction of 90% in the flow rate over 2,688 operation hours. The “I” model presented a sharp reduction of flow rate on the order of 100% (total clogging). Although the linear effect of chlorine dosage was present in all models, changes in the flow rate among the emitters during chlorine application of 10 mg L-1 were not observed. KEY WORDS: chlorination, compensating emitters, emitter clogging. 

scholarly journals AVALIAÇÃO DE DANOS QUÍMICOS EM MEMBRANAS DE COMPENSAÇÃO DE GOTEJADORES, CAUSADO PELA APLICAÇÃO DINÂMICA DE DOSE EXTREMA DE CLORO LIVRE (Parte I)

Irriga ◽  
2008 ◽  
Vol 13 (3) ◽  
pp. 392-410
Author(s):  
Marconi Batista Teixeira ◽  
Rubens Duarte Coelho ◽  
Ralini Ferreira de Melo
Keyword(s):  
Flow Rate ◽  
Chemical Resistance ◽  
Gravimetric Method ◽  
Sao Paulo ◽  
Free Chlorine ◽  
São Paulo ◽  
Rate Reduction ◽  
Drastic Reduction ◽  
The University ◽  
Calculated Average

AVALIAÇÃO DE DANOS QUÍMICOS EM MEMBRANAS DE COMPENSAÇÃO DE GOTEJADORES, CAUSADO PELA APLICAÇÃO DINÂMICA DE DOSE EXTREMA DE CLORO LIVRE (Parte I)  Marconi Batista Teixeira; Rubens Duarte Coelho; Ralini Ferreira de MéloDepartamento de Engenharia Rural, Área: Irrigação e Drenagem, Escola Superior de Agricultura Luiz de Queiroz, Universidade de São Paulo, Piracicaba, SP, [email protected]  1 RESUMO Com o propósito de avaliar a susceptibilidade de membranas de compensação de pressão de 14 modelos de gotejadores autocompensantes ao processo de dano químico, causado pela aplicação dinâmica de 100 mg L-1 de cloro livre, foi conduzido um experimento no Laboratório de Irrigação do Departamento de Engenharia Rural da Escola Superior de Agricultura “Luiz de Queiroz” – ESALQ/USP. Semanalmente foi feita a coleta de água utilizando o método gravimétrico por um período de dez min para todos os emissores presentes na linha gotejadora de cada um dos modelos estudados. Ocorreu um decréscimo de 10 a 20% em média da vazão (L h-1) para a maior parte dos emissores, com exceção do modelo E que apresentou aproximadamente 90% de redução de vazão (13% de aumento de volume da membrana) com 2688 h de funcionamento e redução drástica de vazão na ordem de 100% em virtude do bloqueio total do orifício para o emissor I, em decorrência do aumento de 112% do volume da membrana após 2688 h de aplicação dinâmica de 100 mg L-1 de cloro livre com pH na faixa de5,5 a 6,0. UNITERMOS: cloração, elastômero, entupimento de emissores.  TEIXEIRA , M. B.; COELHO, R. D.; MÉLO, R. F. de. EVALUATION OF CHEMICAL DAMAGES ON SELF-COMPENSATING DRIPPER MEMBRANE, CAUSED BY DYNAMIC APPLICATION OF EXTREME DOSE OF FREE CHLORINE (PART I)  2 ABSTRACT In order to evaluate the chemical resistance of 14 compensating emitters to the dynamic application of 100 mg L-1 of free chlorine, an experiment was carried out under laboratory conditions at the University of São Paulo, Brazil. Emitter flow was weekly evaluated using the gravimetric method. Later on, it was calculated: average flow rate (qm), and percentage of emitters according to flow rate reduction. An average reduction from 10 to 20% of the flow rate (L h-1) for most of the emitters was observed, except for the model “E” that presented approximately 90% of flow rate reduction (13% of increase of volume of the membrane) in 2688 h of operation and drastic reduction of flow rate of 100% (total clogging) for emitter model “I” , due to the increase of 112% membrane volume after 2688 h of dynamic application of 100 mg L-1 of chlorine free with pH 5.5 to 6.0.KEY WORDS: chlorination, elastomer, emitter clogging.

AVALIAÇÃO DE DANOS QUÍMICOS EM MEMBRANAS DE COMPENSAÇÃO DE GOTEJADORES, CAUSADO PELA APLICAÇÃO ESTÁTICA DE ÁCIDO NÍTRICO

Irriga ◽  
2009 ◽  
Vol 14 (2) ◽  
pp. 190-204
Author(s):  
Marconi Batista Teixeira ◽  
Rubens Duarte Coelho ◽  
Ralini Ferreira de Melo ◽  
Áureo Santana de Oliveira
Keyword(s):  
Nitric Acid ◽  
Flow Rate ◽  
Irrigation System ◽  
Gravimetric Method ◽  
Sao Paulo ◽  
Solution Flow Rate ◽  
São Paulo ◽  
Solution Flow ◽  
Relative Flow Rate ◽  
In The Beginning

AVALIAÇÃO DE DANOS QUÍMICOS EM MEMBRANAS DE COMPENSAÇÃO DE GOTEJADORES, CAUSADO PELA APLICAÇÃO ESTÁTICA DE ÁCIDO NÍTRICO  Marconi Batista Teixeira; Rubens Duarte Coelho; Ralini Ferreira de Melo; Áureo Santana de OliveiraDepartamento de Engenharia Rural, Escola Superior de Agricultura Luiz de Queiroz, Universidade de São Paulo, Piracicaba, SP, [email protected]  1 RESUMO Este trabalho objetivou avaliar a susceptibilidade de membranas de compensação de pressão de quatorze modelos de gotejadores autocompensantes ao processo de dano químico, causado pela aplicação estática de ácido nítrico por ½ h com descanso do produto na linha por 1 semana. O experimento foi conduzido no Laboratório de Irrigação do DER–ESALQ/USP. O sistema de irrigação foi composto por tubogotejadores envolvidos por tubos de PVC e vedados em suas extremidades para permitir o contato da solução de ácido nítrico a pH 2,0 com todo o tubogotejador. Foi avaliada a vazão das linhas gotejadoras com o uso de um medidor magnético de vazão e o método gravimétrico tanto no início quanto no final do experimento com a retirada dos tubos de PVC que envolviam as linhas gotejadoras. Posteriormente, foram calculados: vazão média (qm), vazão relativa (Qr) e o percentual do total de gotejadores, por faixa de redução de vazão. O delineamento experimental utilizado foi o inteiramente aleatorizado em esquema fatorial, sendo utilizados os testes “F” para análise de variância e Tuckey, a 5% de significância, para comparação de médias. Para todos os emissores avaliados, a aplicação estática de ácido nítrico com pH na faixa de2,0 a 3,0 por ½ h e descanso da solução na linha por 1 semana, não resultou em danos à membrana de compensação, pois a redução máxima observada para a vazão média e vazão relativa foi de 5% para o emissor H, 3% para os emissores D, I e M, 1% para os emissores B e J e para os demais modelos não ocorreu redução de vazão. UNITERMOS: entupimento, tempo de exposição, gotejamento.  TEIXEIRA , M. B.; COELHO, R. D.; MELO, R. F. de; OLIVEIRA, Á. S. de. EVALUATION OF DAMAGES IN DRIPPER COMPENSATION MEMBRANES UNDER DIFFERENT CONTACT PERIODS WITH NITRIC ACID  2 ABSTRACT This work aimed to evaluate the resistance of fourteen pressure compensation models, caused by the static application of nitric acid for ½ h with product rest inside the line for 1 week. The experiment was conducted in the Irrigation Laboratory of the University of São Paulo/Brazil. The irrigation system consisted of 14 drip lines. For treatments with ½ h application, drip lines were involved by PVC pipes closed in their extremities to allow the contact of the pH 2.0 nitric acid solution. Flow rate of the dripper lines were measured with the use of a magnetic flow rate meter in the beginning and in the end of the experiment. Gravimetric method was used to quantify individual flow rate of emitters in each line. Later on, average flow rate (qm), relative flow rate (Qr) and percentage of emitters according to flow rate reduction were calculated. The statistical analysis of the treatments was done by “F” tests for variance analysis and Tukey’s, at 5% of significance, for comparison of averages. For all emitters, the static application of pH 2.0 nitric acid for ½ h and the solution rest in the line for 1 week, did not result in damage to the membrane, because the maximum reduction observed for flow rate was 5% for emitter H; 3%  for emitters D, I and M; 1% for emitter B and J; and almost 0% for the other models. KEYWORDS: clogging, exposure time, drip irrigation.

scholarly journals CHARACTERIZATION OF THE DEVELOPMENT OF A COMMUNITY OF PRACTICE TO SUPPORT PRE-SERVICE CHEMISTRY TEACHERS

2013 ◽  
Vol 57 (1) ◽  
pp. 124-132
Author(s):  
Valéria C. Santos ◽  
Agnaldo Arroio
Keyword(s):  
Communities Of Practice ◽  
Community Of Practice ◽  
Sao Paulo ◽  
São Paulo ◽  
Chemistry Teaching ◽  
Mutual Engagement ◽  
Teaching Community ◽  
Joint Enterprise ◽  
The University

The concept of communities of practice can be used in different contexts, included the educational context. The development of communities of practice where pre-service teachers work together, refine their practices and learn is a good training for these future teachers. Since communities of practice help teachers learn about teaching and improve their practices, this study aim to characterize the project PIBID of chemistry carried out at the University of São Paulo as a community of practice. On the first half of 2013 the PIBID project included 12 pre-service teachers who attended weekly meetings. These meetings consisted of theoretical training about the use of visual tools in teaching and other concepts about education and meetings to plan activities and classes about topics of chemistry to be applied in a public school at the city of São Paulo, Brazil. During these meetings was possible to notice that the pre-service teachers were engaged in a community of practice, demonstrating the three characteristics emphasized by Wenger (2008): mutual engagement, joint enterprise, and a shared repertoire. Thus the project PIBID of chemistry could be characterized as a community of practice. Furthermore, it was noticed that the community helps in the training of pre-service teachers, since it is providing support to them learn about teaching in practice and implement their knowledge. Key words: chemistry teaching, community of practice, pre-service teacher training.

scholarly journals Inter-Unit Doctoral Program in Nursing of the University of São Paulo: characterization of Graduates and Theses Defended in a Decade

2010 ◽  
Vol 18 (5) ◽  
pp. 841-848 ◽  
Author(s):  
Livia Maria Garbin ◽  
Ana Lídia de Castro Sajioro Azevedo ◽  
Leandra Terezinha Roncolato da Silva ◽  
Ana Maria Laus ◽  
Lucieli Dias Pedreschi Chaves ◽  
...  
Keyword(s):  
Methodological Approach ◽  
Doctoral Program ◽  
Sao Paulo ◽  
São Paulo ◽  
Doctoral Studies ◽  
School Of Nursing ◽  
Research Activities ◽  
Elderly Health ◽  
The University

This descriptive study aimed to characterize the graduates of the Inter-unit Doctoral Program in Nursing of the School of Nursing of the University of São Paulo, who defended their theses in the period 1998-2008, in relation to the location they developed their Masters and their pre and post-doctoral employment, also to investigate the theses defended in relation to the thematic areas and methodological approaches used. Data were collected from the Fenix-USP System and the Lattes Curriculum System. Of the 190 graduates, 178 had curriculums available online. Of those, 58.4% performed teaching and research activities when they entered the doctoral program, which were activities mainly developed at Federal Universities (34.8%). This predominance was maintained after the conclusion of the doctoral studies. The thematic areas most studied were Women’s Health (20.5%) and Adults/Elderly Health (13.2%). Regarding the methodological approach, 68.4% used qualitative methods. The data evidenced the contributions of this Program to research.

scholarly journals Registry of Hospital das Clínicas of the University of São Paulo Medical School: first official solid organ and tissue transplantation report - 2008

Clinics ◽  
2009 ◽  
Vol 64 (2) ◽  
pp. 127-134 ◽  
Author(s):  
Estela Azeka ◽  
José Otavio Costa Auler Júnior ◽  
Paulo Manuel Pego Fernandes ◽  
Willian Carlos Nahas ◽  
Alfredo Inácio Fiorelli ◽  
...  
Keyword(s):  
Medical School ◽  
Sao Paulo ◽  
Tissue Transplantation ◽  
Solid Organ ◽  
São Paulo ◽  
The University

scholarly journals Internationalization at the University of São Paulo

2016 ◽  
Vol 95 (spe3) ◽  
pp. 5
Author(s):  
Raul Machado Neto
Keyword(s):  
Veterinary Medicine ◽  
Medical School ◽  
Sao Paulo ◽  
Law School ◽  
Human Sciences ◽  
São Paulo ◽  
College Of Agriculture ◽  
Engineering School ◽  
The University

The University of São Paulo, founded in 1934, started under the influence of important foreigners academicians in our campuses. The beginning of our university was the result of a fusion of the already existing colleges – Law School, School of Engineering, School of Pharmacy and Dentistry, College of Agriculture, Medical School, and School of Veterinary Medicine. In addition, in 1934, the School of Philosophy, Sciences and Letters was created being responsible for human sciences – Philosophy, History, Geography, Sociology – and hard sciences – Mathematics, Physics, and Chemistry – that academically amalgamated the professional existing colleges. In the thirties, we benefited from the instabilities in Europe and important professors came to the University of São Paulo contributing remarkably to our successful trajectory.[...]

scholarly journals Enteroparasitic occurrence in fecal samples analyzed at the University of Western São Paulo-UNOESTE clinical laboratory, Presidente Prudente, São Paulo State, Brazil

2004 ◽  
Vol 46 (5) ◽  
pp. 243-248 ◽  
Author(s):  
Nair Toshiko Tashima ◽  
Maria Jacira Silva Simões
Keyword(s):  
Giardia Lamblia ◽  
Clinical Laboratory ◽  
Clinical Signs ◽  
Data Bank ◽  
Sao Paulo ◽  
São Paulo ◽  
Bank Structure ◽  
Stool Samples ◽  
Medical Attendance ◽  
The University

This study aims to analyze the enteroparasitic occurrence in children from 0 to 12 years old consulted at the University of western São Paulo Clinical Laboratory, Presidente Prudente, SP, Brazil, in relation to the socioeconomic profile of the attended children. Stool samples were examined and a questionnaire was applied with the objective of knowing the patient's age, sex, medical attendance, characteristic of the habitation, provisioning of water, dejection and domestic waste fates, use of footwear and clinical signs. The software EPI INFO 6 (Version 6.04b) was used for the elaboration of the data bank structure and analysis after previous data codification. Among 1,000 children analyzed, as many as 21.3% presented some kind of parasite. The most frequent protozoan was Giardia lamblia (7.3%) followed by Entamoeba coli (3.9%). The most frequent helminth was Enterobius vermicularis (1.9%) followed by Hymenolepis nana (0.5%). The most frequent protozoan association was Giardia lamblia / Entamoeba coli (0.9%).

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