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Melhoramento do feijoeiro
Abraho, Ibrahim O.;
Bragantia , 1960, DOI: 10.1590/S0006-87051960000100010
Abstract: in spite of the fact that dry beans (phaseolus vulgaris) are one of the main sources of protein in the state of s?o paulo, brazil, they are considered a secondary crop and grown only in small patches or intercropped with coffee, sugar cane, or corn. the development of high yielding strains resistant to the most prevailing diseases, has been considered of prime importance, in order to increase the annual harvest, which is of the order of 150,000 metric tons, grown in an area of approximately 360,000 ha. a project was initiated in 1930 in the genetics department of the instituto agron?mico, campinos, in order to find out which of the numerous cultivated commercial varieties were most suitable. several strains were developed from these varieties, resistant to the physiological races of the rust occurring in campinas, which have been tested in several ecological regions, in order to evaluate their yielding performance. from these varietal and strain trials, undertaken in the period 1948-1956, it was concluded that the beans belonging to the "mulatinho" and "chumbinho" types were the most promising ones. these and the new strains here developed or imported from other bean research centers, were object of a new series of eight trials, which is being discussed in this present paper. these strains were assembled in eight groups according mainly to their growth habits and seed characteristics. the seed weight wos compared with the whole plant weight at the harvesting time, for the eight groups of varieties. the obtained indexes showed to be variable according to the groups of varieties and so can be useful in their identification. they also indicate the yielding capacity of the analysed groups. an analysis of these groups of varieties indicated that the highest yields were observed among the varieties of the "prêto" group, with black seed coat and rosinha, with light rose seed color. the i-43-c variety received from venezuela also showed to be of value far our ecological con
Financiamento e gasto público da educa??o básica no Brasil e compara??es com alguns países da OCDE e América Latina
Abraho, Jorge;
Educa??o & Sociedade , 2005, DOI: 10.1590/S0101-73302005000300007
Abstract: this paper looks into public funding and expenditures directed to basic education in brazil and some countries of the organization for economic co-operation development (ocde) and latin america, so as to build a comparative situation of expenditures. it thus presents the current funding structure of the brazilian educational system and its main problems as well as data of public expenditures on education between 1995- 002. moreover, these data and indicators of public funding and expenditures on education in brazil are contrasted with those of some ocde and latin american countries.
Determina??o do angulo 2V de plagioclásios pelo método analítico com valores de φ múltiplos de 90o
Abraho, Ibrahim Octavio;
Anais da Escola Superior de Agricultura Luiz de Queiroz , 1971, DOI: 10.1590/S0071-12761971000100003
Abstract: the 2v angle of plagioclases is determined through a computer program by the analytical method of chomard. determinations involved 28 individuals of which seven with two repetitions. twelve different extinction operations were used as a result of the combinations: φ= 0o, φ= 90o, φ= 180o, φ= 270o and θ = 15o, θ = 30o, θ = 45o. for the extinction operations used the application of the analytical method to plagioclases should be avoided.
Aplica??o do método analítico a plagioclásios em 4 posi??es de extin??o
Abraho, Ibrahim Octavio;
Anais da Escola Superior de Agricultura Luiz de Queiroz , 1975, DOI: 10.1590/S0071-12761975000100045
Abstract: chomard's analytical method was applied to 13 plagioclases belonging to 7 twins. twelve operations (φ, θ, ψ) were conducted for each individual specimen in each of their four extinction positions. these operations resulted from the combination of three values θ (15o, 30o and 45o) and four values for φ (45o, 135o, 225o and 315o). the values of ψ were the average of 8 determinations. a summarized version of the method is presented. a computer program was used to determine the values of 2v and the directions of the optical axes in 12 different ways for each specimen. the total number of operations resulted from the combination of each θ with all the c34 possible combinations of φ. the resulting d was determined for each value of θ. the salient conclusion of this study is that previous works reported by the author on the subject are confirmed, i.e., the analytical method yields reliable results for. plagioclases; the results are at least as precise as those obtained by means of the conventional methods using, θ = 30o and φ as a multiple of 45o. in addition no advantage was found in using four extinction positions over using one chosen at random.
Sobre a determina??o de angulos de extin??o para a aplica??o do método analítico
Abraho, Ibrahim Octavio;
Anais da Escola Superior de Agricultura Luiz de Queiroz , 1974, DOI: 10.1590/S0071-12761974000100001
Abstract: results are presented on the determination of the initial extinction position and of ψ, for the application of the analytical method. the precision of the method must probably do not be affected by the determination of the initial position wih a smaller number of measurements. deviations of ψ tend to increase as θ is increased. based on δ values, estimatives of ψ are qualitatively equivalent for θ = 15° and θ = 30°, but they are better than those for θ = 45°.
Determina??o de 2v em plagioclásios pelo método analítico com valores de φ múltiplos de 45°
Abraho, Ibrahim Octavio;
Anais da Escola Superior de Agricultura Luiz de Queiroz , 1974, DOI: 10.1590/S0071-12761974000100002
Abstract: the application of chomard's method to plagioclases was studied by means of extinction operations in which φ is a multiple of 45°. a total of 240 extinction operations were performed in seven twinned grains, totaling 13 individuals. twelve extinction operations (φ, θ, ψ) were done for each individual as follows: θ = 15°, θ = 30° and θ = 45°, φ = 45°, φ = 135°, φ = 225°, φ = 315°. a computer program was used to determine 2v and the direction angles of the optic axes. these results were compared to those obtained by the following methods: twins, direct measurement and maximums extinction angle. stereograms obtained by the analytical and conventional methods were also compared. the main conclusion drawn was that the computer programmed analytical method is as efficient as the otheres when θ = 30° and the 2v position is considered to be the average of the 4 possible analytical solutions where the value of φ is a multiple of 45°.
Morfologia do cloreto de cobre na presen?a de extratos aquosos de feijoeiro (Phaseolus vulgaris L.)
Abraho, Ibrahim Octavio;
Anais da Escola Superior de Agricultura Luiz de Queiroz , 1971, DOI: 10.1590/S0071-12761971000100013
Abstract: morphologic features observed in copper chloride crystals formed from the extracted sap of common beans (phaseolus vulgaris l.) are presented. various organs namely root, leaf, steam, flower and seed, taken from each of three different varieties were utilized. some new terms are introduced for the description of the crystals. identification of varieties and plant organs is made possible by the variation in the morphology of crystallization patterns formed in the presence of liquid extracts from the various organs studied.
Distin??o de cultivares de feijoeiro (Phaseolus vulgaris L.) pelo método da cristaliza??o sensitiva
Abraho, Ibrahim Octavio;
Anais da Escola Superior de Agricultura Luiz de Queiroz , 1976, DOI: 10.1590/S0071-12761976000100030
Abstract: the possibility of using plant varieties as crystallization pattern modifiers is studied. crystallization models were obtained for roots, stems, leaves, flowers and seeds, of three varieties of dry beans obtained from nutritive solution. the concentration used mostly was 0,05: 0,5. comparison of the patterns showed that the sensitivity of the method is sufficient to warrant its employment in distinguishing varieties, especially when using flower extracts.
Aplica??o do método de Pfeiffer a sementes de café (Coffea arabioa, L.)
Abraho, Ibrahim Octavio;
Anais da Escola Superior de Agricultura Luiz de Queiroz , 1970, DOI: 10.1590/S0071-12761970000100004
Abstract: the object of this work is to study the crystaliza -tion patterns of copper chlorids (cucl2.2h20) as influenced by extract of coffee seeds (coffea arábica l.), variety mundo novo. investigation and description are made for 16 different concentrations of the water-copper chloride-extract system, with 3 replications. the best crystallization patterns were obtained by using the filtered-mixture technique. the results indicate that concentrations between 0,5 and 1,0 g per plate of copper chloride and between 0,05 and 0,075 g per plate of extract can be recommended.
Kant: Crítica e História
Abraho Costa Andrade
Princípios : Revista de Filosofia , 2002,
Abstract:
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