Analysis Of Ash Content Research Articles

Seleção de variedades de soja (Glycine Max (L.) Merril ): I. Analises Bromatológicas

O presente trabalho foi realizado com o fito de estabelecer uma seleção prévia entre 32 variedaeds de soja (Glycine max. (L.) Merril), com base nas análises bromatológicas das sementes. Foram determinados teores de umidade (U), cinzas (RM), proteína bruta (PB), gordura bruta ou extrato etéreo (EE), fibra bruta (F) e extrativo não nitrogenado (ENN). As análises da variância permitem tirar as seguintes conclusões: 1) Entre as variedades classificadas no grupo forrageiro e comestível, tem-se: Mandarin 8a (40,16% PB), Bicolor de Calai (39,64% PB) e Aliança (38,70% PB). 2) De acordo com a classificação estabelecida, para o grupo produtor de óleo, as variedades Lee, Hood, Lincoln (Blanco) Improved Pelican (2), Lincoln (Morado) e Improved Pelican (1), se destacam com 21,76, 21,65, 21,62, 21,35, 21,13 e 21,04% de EE respectivamente. 3) As variedades que apresentaram menor percentagem de fibra são: Hernónjn.0 107, Hood, Mogiana, Hill e Selection n.° 135, com 9,59; 9,62; 9,68; 10,02 e 10,12% F respectivamente. 4) Encontrou-se uma correlação positiva entre o teor de proteína bruta e o de cinzas.

The distribution of solar radiation throughout southern Africa : Drummond, A. J. and Vowinckel, E., J. Meteor. 14 (4): 343-53, Aug. 1957. Illus.

Spent coffee grounds (SCG), a processing by-product from the soluble coffee industry, was evaluated as a potential feedstock for preparing compressed logs for energy production. Hence, a blend of SCG/wood chips was transformed into densified logs using an industrial press. Chemical properties such as calorific value, ash content and elemental analysis were obtained. Combustion tests were carried out with a five-star–labeled stove in a French industrial research and development laboratory. Three different configurations were tested: a densified log containing 20 wt% of SCG blended with pine wood chips, another containing a mixture 50/50 wt% of SCG/pine wood chips and a classical beech log. This study is the first one that focuses on the potential of compressed logs as a new biocombustible for wood stoves. The obtained results show that the combustion of logs containing SCG leads to better yield of combustion. Nevertheless, CO and particle emissions increase when increasing the rate of SCG although the exhaust gas emissions and combustion yields always lead to the “five-star Flamme Verte” label achievement. Such attainment is essential to sell these densified biofuel logs in the French market. Results indicate that the blended densified logs are combusted rapidly leading to higher stove efficiency and therefore good heat recuperation from the stove walls. On the contrary, the addition of SCG leads to lower CO2 concentrations (7.7% and 9.05% for 20 wt% and 10 wt% of SCG, respectively). This behavior indicates that the combustion of compressed logs is not suitable for the stove design and may lead to an uncomfortable heating. One should be reminded that the evaluated stove was designed for the combustion of conventional wood logs (with respect to the NF Bois de Chauffage standard). This means that the results obtained during this study with the different densified fuel logs could be improved after an adjustment of the stove conception.

Temperature consideration in solar battery development : Halsted, R. E., J. App. Phys. 28 (10): 1131, Oct. 1957. Illus.

Spent coffee grounds (SCG), a processing by-product from the soluble coffee industry, was evaluated as a potential feedstock for preparing compressed logs for energy production. Hence, a blend of SCG/wood chips was transformed into densified logs using an industrial press. Chemical properties such as calorific value, ash content and elemental analysis were obtained. Combustion tests were carried out with a five-star–labeled stove in a French industrial research and development laboratory. Three different configurations were tested: a densified log containing 20 wt% of SCG blended with pine wood chips, another containing a mixture 50/50 wt% of SCG/pine wood chips and a classical beech log. This study is the first one that focuses on the potential of compressed logs as a new biocombustible for wood stoves. The obtained results show that the combustion of logs containing SCG leads to better yield of combustion. Nevertheless, CO and particle emissions increase when increasing the rate of SCG although the exhaust gas emissions and combustion yields always lead to the “five-star Flamme Verte” label achievement. Such attainment is essential to sell these densified biofuel logs in the French market. Results indicate that the blended densified logs are combusted rapidly leading to higher stove efficiency and therefore good heat recuperation from the stove walls. On the contrary, the addition of SCG leads to lower CO2 concentrations (7.7% and 9.05% for 20 wt% and 10 wt% of SCG, respectively). This behavior indicates that the combustion of compressed logs is not suitable for the stove design and may lead to an uncomfortable heating. One should be reminded that the evaluated stove was designed for the combustion of conventional wood logs (with respect to the NF Bois de Chauffage standard). This means that the results obtained during this study with the different densified fuel logs could be improved after an adjustment of the stove conception.

Association for Applied Solar Energy : Living with the sun, volume 1: Sixty plans selected from the entries in the 1957 International Architectural Competition to Design a Solar-Heated Residence. Phoenix, Ariz., 1958. xii, 60 p. Illus.

Spent coffee grounds (SCG), a processing by-product from the soluble coffee industry, was evaluated as a potential feedstock for preparing compressed logs for energy production. Hence, a blend of SCG/wood chips was transformed into densified logs using an industrial press. Chemical properties such as calorific value, ash content and elemental analysis were obtained. Combustion tests were carried out with a five-star–labeled stove in a French industrial research and development laboratory. Three different configurations were tested: a densified log containing 20 wt% of SCG blended with pine wood chips, another containing a mixture 50/50 wt% of SCG/pine wood chips and a classical beech log. This study is the first one that focuses on the potential of compressed logs as a new biocombustible for wood stoves. The obtained results show that the combustion of logs containing SCG leads to better yield of combustion. Nevertheless, CO and particle emissions increase when increasing the rate of SCG although the exhaust gas emissions and combustion yields always lead to the “five-star Flamme Verte” label achievement. Such attainment is essential to sell these densified biofuel logs in the French market. Results indicate that the blended densified logs are combusted rapidly leading to higher stove efficiency and therefore good heat recuperation from the stove walls. On the contrary, the addition of SCG leads to lower CO2 concentrations (7.7% and 9.05% for 20 wt% and 10 wt% of SCG, respectively). This behavior indicates that the combustion of compressed logs is not suitable for the stove design and may lead to an uncomfortable heating. One should be reminded that the evaluated stove was designed for the combustion of conventional wood logs (with respect to the NF Bois de Chauffage standard). This means that the results obtained during this study with the different densified fuel logs could be improved after an adjustment of the stove conception.

Effect of Colloidal Silica Treatments on Sizing and Finishing Characteristics of Cotton Yarns1

Cotton in lap form was treated with a colloidal silica compound, and together with an untreated lap was processed into 15/1, 36/1, and 50/1 yarns. Samples of these yarns were used for control, for mercerizing, for bleaching, and for dyeing. Analyses of ash content were made on these four sets of samples. In addition, other samples of the yarns were used to assess the reaction to slashing, desizing, and abrasion. In general, the presence of colloidal silica, on medium and fine carded yarns, did not affect the operations of mercerizing, bleaching, and dyeing. Yarn strength differences between treated and untreated samples were of the same order after as before each of these chemical processes. Quantitative tests (ash-content analyses) to determine the effect of these processes on the permanence of the colloidal silica on the fiber were inconclusive.