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Valoración germinativa de 20 accesiones de leguminosas almacenadas en condiciones desfavorables Germinative evaluation of 20 legume accessions stored under unfavorable conditions  [cached]
Bárbara C Mu?oz,J. A Sánchez,Laura A Montejo,Yolanda González
Pastos y Forrajes , 2009,
Abstract: Se valoró la respuesta germinativa de 20 accesiones de leguminosas procedentes de diferentes tiempos de almacenamiento, en condiciones inadecuadas de humedad y temperatura, y sometidas a tratamientos de escarificación térmica y ácida antes de la siembra, con distintas temperaturas del sustrato. Independientemente del tiempo de almacenamiento, el contenido de humedad de las semillas fue inferior al 15%. Las semillas de las accesiones con más de 12 a os presentaron porcentajes de germinación inferiores al 10% para todos los tratamientos de siembra ensayados, excepto en Centrosema pubescens cv. CIAT 438, Crotalaria sp. cv. Derecha, Crotalaria spectabilis, Crotalaria brownii cv. 687, Macroptilium atropurpureum, Stylosanthes guianensis cv. CIAT 136 y Mimosa invisa. El resto de las accesiones presentaron diferentes grados de pérdida de la viabilidad. Las de mejor respuesta germinativa fueron Crotalaria sp. cv. Derecha, M. invisa e Indigofera sp., debido a que alcanzaron porcentajes de germinación final superiores al 70% para, al menos, uno de los termoperíodos de siembra ensayados. An evaluation was made of the germinative response of 20 legume accessions from different storage times, under inadequate humidity and temperature conditions, and subject to thermal and acid scarification treatments before seeding, with different temperatures of the substratum. Independently from the storage time, the moisture content of the seeds was lower than 15%. The seeds from the accessions with more than 12 years showed germination percentages lower than 10% for all the essayed planting treatments, except in Centrosema pubescens cv. CIAT 438, Crotalaria sp. cv. Derecha, Crotalaria spectabilis, Crotalaria brownii cv. 687, Macroptilium atropurpureum, Stylosanthes guianensis cv. CIAT 136 and Mimosa invisa. The other accessions showed different degrees of viability loss. The best germinative response occurred in Crotalaria sp. cv. Derecha, M. invisa and Indigofera sp., because they reached final germination percentages higher than 70% for, at least, one of the studied seeding thermoperiods.
Itens alimentares no consumo alimentar de crian?as de 7 a 10 anos
Hinnig, Patrícia de Fragas;Bergamaschi, Denise Pimentel;
Revista Brasileira de Epidemiologia , 2012, DOI: 10.1590/S1415-790X2012000200010
Abstract: objective: to describe the most representative food items regarding the total intake of energy, carbohydrates, proteins and lipids in children with ages between 7 and 10 years. methods: a list was prepared with all food intake and quantities, and the diet composition in relation to energy and macronutrients was calculated. the list was based on information provided by a 3-day-food diary completed by 85 schoolchildren ranging from seven to ten years old and enrolled in a public school in s?o paulo, brazil. after dividing the food into 129 items, we calculated the percentage in which each item contributed to diet nutrient intake and identified those which contributed to up to 95% of the total intake of calories and selected nutrients. results: the items "white rice, greek rice, rice with vegetables" and "brown, black and white beans, lentils" contributed significantly to the total intake of energy and carbohydrates. the item "whole milk, powdered milk" had a significant participation in the total intake of lipids, protein and energy. we emphasize the importance of carbohydrates and energy intake from sugar-sweetened beverages (sodas and processed juices) in the total diet intake of the children. conclusions: the contribution of rice in the total food intake of energy and carbohydrates; of beans in energy, carbohydrates and proteins; of milk and meat in energy, protein and lipids; and bread in energy and carbohydrates is noticeable. the participation of sugar-sweetened beverage in the total intake in energy and carbohydrates and of candies in the total intake of lipids is also evident.
Evaluation of prognostic factors and the role of chemotherapy in unfavorable carcinoma of unknown primary site: a 10-year cohort study
Kuo-Wei Chen, Chia-Jen Liu, Hsueh-Ju Lu, Cheng-Hwai Tzeng, Jin-Hwang Liu, Tzeon-Jye Chiou, Chueh-Chuan Yen, Wei-Shu Wang, Ta-Chung Chao, Hao-Wei Teng, Ming-Huang Chen, Chun-Yu Liu, Peter MH Chang, Muh-Hwa Yang
BMC Research Notes , 2012, DOI: 10.1186/1756-0500-5-70
Abstract: The medical records of 179 CUP patients who were treated at Taipei Veterans General Hospital from 2000 to 2009 were reviewed. Factors associated with survival were determined by Kaplan-Meier analysis. Differences between the groups with and without palliative chemotherapy were analyzed.Univariate analysis revealed multiple prognostic factors, including performance status, lung metastasis, number of metastatic organs, serum albumin, corrected serum calcium, lactate dehydrogenase (LDH), sodium, and cholesterol levels, palliative chemotherapy, and white blood cell and lymphocyte counts. Multivariate analysis showed that performance status < 2, serum albumin level ≥ 3.5 g/dl, corrected serum calcium level < 10.7 mg/dl, single metastatic organ, and palliative chemotherapy were independent factors of better prognosis. Patients with better performance status, higher serum albumin, and lower serum LDH levels had significantly greater benefit from palliative chemotherapy.Certain patients with unfavorable CUP will have better survival. Identification of patients with unfavorable CUP who could benefit from palliative chemotherapy warrants future prospective studies.Cancer of unknown primary site (CUP) is defined as a histologically proven metastatic malignant tumor whose primary site cannot be identified after thorough pre-treatment work-up [1]. It is the seventh most prevalent cancer in the world and the fourth commonest cause of cancer death in both men and women [2]. CUP accounts for 2.3%-4.2% of cancers in either gender. Previous studies suggest that CUP patients should be categorized into favorable and unfavorable groups before appropriate management is provided [3-5]. In the favorable group, individual treatment according to the possible primary site, such as poorly differentiated carcinoma with midline distribution, papillary adenocarcinoma of the peritoneal cavity in women, adenocarcinoma involving only axillary lymph nodes in women, and squamous cell carcinoma involvi
Técnicas empregadas na ánalise de itens  [cached]
Alexandre do Espírito Santo
Semina : Ciências Sociais e Humanas , 1978, DOI: 10.5433/
Abstract: O objetivo último da análise de itens pode ser a obten o de testes que me am fidedignamente a aprendizagem de conteúdos de uma disciplina. Para isso, requer-se que os itens de um teste tenham poder discriminatório, separando os bons alunos dos alunos fracos. O item ideal é, portanto, aquele em que os bons alunos acertam e os alunos fracos erram. Testes compostos de itens com tal característica coroam de êxito o trabalho didático do professor. Este estudo procura demonstrar a aplica o de algumas técnicas de análise de itens, principalmente quanto aos índices de dificuldade e de discrimina o. Foi realizada a análise de um teste real em toda a extens o necessária, de forma a expor e ensinar a aplica o das técnicas.The ultimate goal of item analysis can be the provision of tests which are capable of measuring the results of learning. The items of such a test must be adequate to discriminate good from weak students. Thus, the ideal item is that one which good students get right and weak students get wrong. Tests with such items make the teacher's work successful. This study aims at demonstrating the use of some techniques for item analysis, mainly concerning difficulty and discrimination indexes analysis of an item of an actual test was carried out in order to give a practical demonstration of the use of some item analysis techniques. Keywords
Valoración germinativa de 20 accesiones de leguminosas almacenadas en condiciones desfavorables
Mu?oz,Bárbara C; Sánchez,J. A; Montejo,Laura A; González,Yolanda; Reino,J;
Pastos y Forrajes , 2009,
Abstract: an evaluation was made of the germinative response of 20 legume accessions from different storage times, under inadequate humidity and temperature conditions, and subject to thermal and acid scarification treatments before seeding, with different temperatures of the substratum. independently from the storage time, the moisture content of the seeds was lower than 15%. the seeds from the accessions with more than 12 years showed germination percentages lower than 10% for all the essayed planting treatments, except in centrosema pubescens cv. ciat 438, crotalaria sp. cv. derecha, crotalaria spectabilis, crotalaria brownii cv. 687, macroptilium atropurpureum, stylosanthes guianensis cv. ciat 136 and mimosa invisa. the other accessions showed different degrees of viability loss. the best germinative response occurred in crotalaria sp. cv. derecha, m. invisa and indigofera sp., because they reached final germination percentages higher than 70% for, at least, one of the studied seeding thermoperiods.
Avaliando a leitura em inglês: uma reflex o sobre itens de testes
Celso Henrique Soufen Tumolo,Lêda Maria Braga Tomitch
Revista Brasileira de Linguística Aplicada , 2007,
Abstract: O desenvolvimento de testes de qualquer natureza requer um estágio de investiga o dos itens elaborados, investiga o essa que deve ser feita considerando como critério principal a validade de construto. Neste artigo, trazemos uma análise de itens de testes desenvolvidos para avaliar a habilidade de leitura em inglês como língua estrangeira. Dividimos os itens em defensáveis e n o defensáveis: os defensáveis permitem a demonstra o da habilidade como definida no construto, enquanto os n o defensáveis n o permitem coletar evidências para uma interpreta o válida da habilidade relevante. Sugerimos uma divis o dos itens n o defensáveis em três categorias: itens independentes do texto, itens com pistas para a resposta e itens de vocabulário, cada qual apresentando problemas para valida o de construto. é possível concluir que itens usados em testes podem n o ser adequados ao objetivo para o qual foram desenvolvidos. As análises e conclus es aqui feitas pretendem colaborar com o desenvolvimento de testes que possibilitem coletar evidências para uma interpreta o mais válida da habilidade de leitura em inglês. Test development of any nature requires a stage for the investigation of the items designed, which must be carried out considering construct validity as the main criterion. In this article we bring an analysis of test itens designed to assess the reading ability in English as a foreign language. We divide the items into defensible and non-defensible: defensible items allow for the demonstration of the reading ability as described in the construct, whereas non-defensible items do not allow for collecting evidence for a more valid interpretation of the relevant ability. We suggest a division of the non-defensible itens into 3 categories: text-independent items, items with unintended clues for the answer, and vocabulary items, each one presenting some problems for construct validation. It is possible to conclude that items used in tests may not be adequate for the purposes they were designed. The analyses and conclusions presented here aim at collaborating with the development of tests that allow for the collection of evidence for more valid interpretations of the ability of reading in English as a foreign language.
Ancianos con intento suicida en el municipio 10 de Octubre
Guibert Reyes,Wilfredo; Sánchez Cruz,Liana Rosa;
Revista Cubana de Higiene y Epidemiolog?-a , 2001,
Abstract: a descriptive study was conducted aimed at identifying psychosocial, demographic and social important characteristics of the elderly who live in "10 de octubre" municipality and who attempted suicide during the last 3 years.the sample was composed of 26 aged people without cognitive deterioration. the semi-structured interview of suicide attempt was made.the results were analyzed later and the following conclusions were reached: there was a predominance of aged white persons between 60 and 69 years old, with primary educational level, retired, and with average incomes. the main risk factors that preceded the suicide attempt were: feeling of hopelessness, depressive syndrome and pathological personal suicide history. the protective factor for suicide present in most of the elderly was physical well-being and most of them had a formal-informal network of social support and received mainly instrumental support and considered generally the social support as deficient.
Ancianos con intento suicida en el municipio 10 de Octubre  [cached]
Wilfredo Guibert Reyes,Liana Rosa Sánchez Cruz
Revista Cubana de Higiene y Epidemiología , 2001,
Abstract: Se realizó un estudio descriptivo con el objetivo de identificar características psicosociales, demográficas y sociales importantes de los ancianos residentes en el municipio "10 de Octubre" quienes realizaron intento de suicidio en los últimos 3 a. La muestra estuvo constituida por 26 sin deterioro cognoscitivo. Se les aplicó la entrevista semi-estructurada de intento suicida, posteriormente se analizaron los resultados y se plantearon las siguientes conclusiones: Predominaron los ancianos con edades entre 60 y 69 a, raza blanca, escolaridad primaria, jubilados y con ingresos económicos medios, los principales factores de riesgo que antecedieron al intento suicida fueron: sentimiento de desesperanza, síndrome depresivo y antecedente patológico personal suicida, el factor protector para el suicidio presente en la mayoría de los ancianos fue el bienestar físico y la mayoría de ellos tenían red de apoyo social de tipo formal-informal, recibiendo fundamentalmente apoyo instrumental y percibiendo generalmente el apoyo social como de calidad deficiente. A descriptive study was conducted aimed at identifying psychosocial, demographic and social important characteristics of the elderly who live in "10 de Octubre" municipality and who attempted suicide during the last 3 years.The sample was composed of 26 aged people without cognitive deterioration. The semi-structured interview of suicide attempt was made.The results were analyzed later and the following conclusions were reached: there was a predominance of aged white persons between 60 and 69 years old, with primary educational level, retired, and with average incomes. The main risk factors that preceded the suicide attempt were: feeling of hopelessness, depressive syndrome and pathological personal suicide history. The protective factor for suicide present in most of the elderly was physical well-being and most of them had a formal-informal network of social support and received mainly instrumental support and considered generally the social support as deficient.
ADAPTATION TO UNFAVORABLE CONDITIONS OF GROWTH: PATHOGENICITY OF ACHOLEPLASMA LAIDLAWII PG8  [cached]
Vladislav M. Chernov,Natalia E. Moukhametshina,Yurii V. Gogolev,Tatiana N. Nesterova
Electronic Journal of Biomedicine , 2006,
Abstract: ABSTRACT:As a result of cultivation of A. laidlawii PG8 cells on the deficient medium during 480 days, the mycoplasma culture adapted in vitro to unfavorable growth conditions was obtained. The culture consisted of cells with sizes less than 0.2 μm and features of A. laidlawii PG8 ultramicroforms, nanocells. A. laidlawii PG8 culture adapted in vitro to unfavorable growth conditions shows more evident phytopathogenicity than the unadapted one. Infecting plants V. minor L. by A. laidlawii PG8 culture adapted in vitro to UGC resulted in the appearance of chloroses in 75%, necrosis – 50%, leaves marcescence – 50% and abnormalities of bine development in 30% of plants through 12 days, while infecting plants by A. laidlawii PG8 culture unadapted to UGC led to respective signs in 40%, 25%, 25% and 0% of samples, respectively, through 30 days. The ability of A. laidlawii PG8 to form UMF resistant to stress factors in UGC with high phytopathogenic potential seems to demand a new approach to investigate the precise mechanisms of interacting the mycoplasma with host organisms.RESUMENComo resultado del cultivo de células de A. laidlawii PG8 en medio deficiente durante 480 días, fue obtenido un cultivo de mycoplasma adaptado in vitro a las condiciones desfavorables del crecimiento. El cultivo consistió en células con tama o menor de 0.2 μm y características PG8 ultramicroformas de A. laidlawii nanocélulas. El cultivo de A. laidlawii PG8 adaptado in vitro a condiciones desfavorables del crecimiento muestra más evidente fitopatogenicidad que el inadaptado. Plantas infectadas V. minor L. por el cultivo del A. laidlawii PG8 adaptado in vitro a UGC dio como resultado la aparición de clorosis en el 75%, necrosis en el 50%, marcescencia de las hojas en el 50% y anormalidades del desarrollo del bine en el 30% de plantas a los 12 días, mientras que las plantas infectadas por el cultivo del A. laidlawii PG8 inadaptado a UGC, condujo a dichos signos en el 40%, 25%, 25% y 0% de las muestras, respectivamente en 30 días. La capacidad del A. laidlawii PG8 a formar UMF resistente a los factores de estres en UGC con alto potencial fitopatogénico, parece exigir un nuevo planteamiento para investigar los mecanismos precisos de interacción entre el mycoplasma y el huesped.
Redu o preliminar de itens da PTS vers o 7 a 14 anos  [cached]
Ito Patrícia do Carmo Pereira,Guzzo Raquel Souza Lobo
Psicologia: Reflex?o e Crítica , 2003,
Abstract: A Pavlovian Temperament Survey - PTS foi desenvolvida para avaliar a express o comportamental das propriedades do Sistema Nervoso Central. Este estudo teve como objetivo iniciar o processo de aferi o e redu o de itens da PTS, vers o 7 a 14 anos. Participaram da amostra 124 sujeitos de 7 a 14 anos, de ambos os sexos, os quais tiveram suas características temperamentais avaliadas pela PTS. O processo de redu o e aferi o constou de duas etapas: análise da correla o item total e análise fatorial exploratória. Resultados obtidos indicaram a permanência de 107 itens do total de 252 que inicialmente compunham a escala: 35 itens em FE (38,8%), 42 em FI (50%) e 30 em MO (38,4%). Novos estudos se fazem necessários para uma melhor adequa o dos itens ao contexto brasileiro, com amplia o da amostra para dar continuidade ao processo de aferi o e redu o de itens da PTS vers o 7 a 14 anos.
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