Desulfurization Gypsum Whisker Preparation and Performance Study

2014 ◽  
Vol 711 ◽  
pp. 197-200
Author(s):  
Peng Fu ◽  
Guo Zhong Li
Keyword(s):  
Magnesium Sulfate ◽  
Calcium Chloride ◽  
Raw Material ◽  
Performance Study ◽  
Average Ratio ◽  
Maximum Value ◽  
And Performance

Using the desulfurization gypsum as raw material and the atmospheric acidification method, prepared desulfurization gypsum whisker, Studied water gypsum ratio, crystallization agent on properties of gypsum whiskers. Researchs show that, when the water gypsum ratio is 57.14%, the average ratio of length to diameter reaches the maximum value is 41.1; when using calcium chloride and Magnesium sulfate (the quality of various additives in the desulfurization gypsum quality accounted for 2%), the best effect, the ratio of length to diameter is 42.9.

QUALIDADE DO CALDO PARA PRODUÇÃO DE ETANOL EM CULTIVARES DE SORGO SACARINO SOB ADUBAÇÃO NITROGENADA

2017 ◽  
Vol 16 (3) ◽  
pp. 388
Author(s):  
CRISTÓBAL SOTO SOLANO ◽  
NIRALDO JOSÉ PONCIANO ◽  
ROGÉRIO FIGUEIREDO DAHER ◽  
RAFAEL AUGUSTO DA COSTA ◽  
PAULO MARCELO DE SOUZA ◽  
...  
Keyword(s):  
Ethanol Production ◽  
Nitrogen Fertilization ◽  
Ethanol Yield ◽  
Raw Materials ◽  
Raw Material ◽  
Maximum Value ◽  
Total Reducing Sugars ◽  
Nitrogen Rates

 RESUMO - O sorgo sacarino tem potencial de uso como fonte de matéria-prima para a produção de bioetanol. Objetivou-se, com este estudo, analisar o efeito da adubação nitrogenada de cobertura na qualidade do caldo para produção de etanol de quatro cultivares de sorgo sacarino. O experimento foi conduzido em Campos dos Goytacazes- RJ, de janeiro a maio de 2014. Foram estudadas quatro cultivares de sorgo sacarino: BRS 506, BRS 508, BRS 509 e BRS 511 e cinco de doses de nitrogênio (0, 80, 160, 240 e 320 Kg ha-1), aplicadas aos 25 e 45 dias após semeadura. Os resultados mostraram que valor Brix, açúcares redutores totais, açúcares totais recuperáveis, volume do caldo e rendimento de etanol foram afetados pela adubação nitrogenada. Para todas as características, o valor máximo foi obtido pela dose de 240 kg de N ha-1. Entre as cultivares, a BRS 506 mostrou-se superior em produção de caldo e rendimento de etanol. Enquanto a BRS 511 destacou-se nos atributos ART e ATR, e a cultivar BRS 508 sobressaiu-se no valor Brix. A cultivar BRS 506 apresentou melhor resultado combinado, com maior volume de caldo e rendimento de etanol com as doses de 204 e 212 kg N ha-1, respectivamente. Palavras-chave: biocombustíveis, rendimento de álcool carburante, atributos industriais, caracterização da matéria prima, genótipos. QUALITY OF BROTH FOR ETHANOL PRODUCTION IN CULTIVARS OF SACARINE SORGHUM UNDER NITROGEN FERTILIZATION  ABSTRACT - Sweet sorghum has potential as a source of raw material for the production of bioethanol. The objective of this study was to analyze the effect of nitrogen topdressing on the quality of the juice for ethanol production from four cultivars of sorghum. The experiment was conducted in Campos, State of Rio de Janeiro, Brazil, from January to May 2014. Four cultivars of sorghum: BRS 506, BRS 508, BRS 509 and BRS 511 were studied, and five nitrogen rates (0, 80, 160, 240 and 320 kg ha-1), applied to 25 and 45 days after sowing. The results showed that the value Brix, total reducing sugars, total recoverable sugars, broth volume and ethanol yield were affected by nitrogen fertilization. For all features, the maximum value was obtained for the dose of 240 kg N ha-1. Among cultivars, BRS 506 was superior in production of broth and ethanol yield. BRS 511 stood out in the attributes ART and ATR, and BRS 508, in value Brix. BRS 506 had better combined result of higher volume of juice and ethanol yield with doses of 204 and 212 kg N ha-1, respectively Keywords: biofuels, fuel ethanol output, industrial attributes, characterization of raw materials, genotypes.   

An Improved Hybrid Genetic Algorithm and Performance Study

2012 ◽  
Vol 482-484 ◽  
pp. 95-98
Author(s):  
Wei Dong Ji ◽  
Ke Qi Wang
Keyword(s):  
Genetic Algorithm ◽  
Hybrid Genetic Algorithm ◽  
Optimization Method ◽  
Convergence Speed ◽  
Test Results ◽  
Improved Genetic Algorithm ◽  
Performance Study ◽  
Speed Up ◽  
And Performance

Put forward a kind of the hybrid improved genetic algorithm of particle swarm optimization method (PSO) combine with and BFGS algorithm of, this method using PSO good global optimization ability and the overall convergence of BFGS algorithm to overcome the blemish of in the conventional algorithm slow convergence speed and precocious and local convergence and so on. Through the three typical high dimensional function test results show that this method not only improved the algorithm of the global search ability, to speed up the convergence speed, but also improve the quality of the solution and its reliability of optimization results.

Preparation of Nano-TiO2 and Performance Study on Photocatalytic Degradation of Methylene Blue

2012 ◽  
Vol 430-432 ◽  
pp. 1040-1043
Author(s):  
Jiang Liu ◽  
Zheng Xian Ma ◽  
Shuai Liang
Keyword(s):  
Methylene Blue ◽  
Photocatalytic Degradation ◽  
Ph Value ◽  
Raw Material ◽  
Dye Wastewater ◽  
Performance Study ◽  
Water Addition ◽  
Nano Tio2 ◽  
Blue Solution ◽  
And Performance

Experiment of photocatalytic degradation was conducted through using tetra-n-butyl titanate and ethyl alcohol as raw material, adopting sol-gol method to prepare photocatalyst of nano-TiO2 and using methylene blue solution as analogue dye wastewater. The influences of hydrolyzing temperature, PH value, different water addition, and different speed of adding drops were investigated, as well as the reuse rate of photocatalyst.

scholarly journals Combination of mild heat and calcium chloride treatment on the texture and bioactive compounds of purple shallot

Food Research ◽  
2020 ◽  
Vol 4 (5) ◽  
pp. 1681-1687
Author(s):  
N.M. Thuy ◽  
N.T.M. Tuyen ◽  
N.V. Tai
Keyword(s):  
Water Temperature ◽  
Calcium Chloride ◽  
Bioactive Compounds ◽  
Chloride Concentration ◽  
Hot Water ◽  
Raw Material ◽  
Total Phenolic ◽  
Agricultural Crop ◽  
Mild Heat

Purple shallot (Allium ascalonicum L.) is one of the most tropical agricultural crop widely used as a food seasoning. It is a highly commercial and important commodity by the food industry, not only based on its economic value but also the bioactive compounds. Pretreatment is widely used before processing of agro-products to improve the quality of these products. In this study, the influences of the pretreatment were conducted by the combination of mild temperature ranging from 45 to 55°C and different concentrations of calcium chloride (from 0.25 to 0.75%) on the quality of raw purple shallot used for further study (e.g. freeze-drying and pickling). The samples were analyzed for the firmness, bioactive compounds (total phenolic, total flavonoid and quercetin content) and antioxidant activity. The results showed that mild water temperature and calcium chloride concentration were influent on the firmness and bioactive compounds of raw material. The addition of calcium can enhance the beneficial action of mild heat treatments on sensory properties of purple shallot. The optimal conditions of the process were stabilized with the desired function, obtained at 50°C of mild hot water temperature dipping and 0.64% of calcium chloride concentration.

Replication of the Superstition and Performance Study by

2014 ◽  
Vol 45 (3) ◽  
pp. 239-245 ◽  
Author(s):  
Robert J. Calin-Jageman ◽  
Tracy L. Caldwell
Keyword(s):  
Task Difficulty ◽  
Statistical Power ◽  
Meta Analysis ◽  
A Priori ◽  
Significant Heterogeneity ◽  
Performance Study ◽  
Improve Performance ◽  
Research Designs ◽  
Series Of Experiments ◽  
And Performance

A recent series of experiments suggests that fostering superstitions can substantially improve performance on a variety of motor and cognitive tasks ( Damisch, Stoberock, & Mussweiler, 2010 ). We conducted two high-powered and precise replications of one of these experiments, examining if telling participants they had a lucky golf ball could improve their performance on a 10-shot golf task relative to controls. We found that the effect of superstition on performance is elusive: Participants told they had a lucky ball performed almost identically to controls. Our failure to replicate the target study was not due to lack of impact, lack of statistical power, differences in task difficulty, nor differences in participant belief in luck. A meta-analysis indicates significant heterogeneity in the effect of superstition on performance. This could be due to an unknown moderator, but no effect was observed among the studies with the strongest research designs (e.g., high power, a priori sampling plan).

LIGHTING AND PERFORMANCE: AN ANALYSIS ON LIGHTING EFFICIENCY OF ARCHITECTURE STUDIO

2019 ◽  
Vol 1 (1) ◽  
pp. 92
Author(s):  
Fazidah Hanim Husain
Keyword(s):  
Learning Environment ◽  
Comfort Level ◽  
Artificial Lighting ◽  
Level Measurement ◽  
Acceptable Range ◽  
Creative Learning ◽  
Illuminance Level ◽  
And Performance ◽  
Effect Of Light

Lighting is one of the key elements in any space and building infrastructure. Good design for an area in the building requires sufficient light that contributes to the efficiency of the activities. The correct method allows natural light to transmit, reduce heat and glare in providing a conducive learning environment. Light plays a significant influence to the quality of space and contributes focus of the students in an architecture studio. Previous research has shown that the effect of light also controlled emotions, behavior, and mood of the students. The operations of artificial lighting that have been used most of the time in an architecture studio during day and night may create lavishness and inadequacy at the same time. Therefore, this paper focuses on the identifying the quality of light for the architecture studio in UiTM (Perak), to instill a creative learning environment. Several methodologies adopted in this study such as illuminance level measurement using lux meter (LM-8100), and a questionnaire survey in gauging the lighting comfort level from students’ perspective. The study revealed that the illuminance level in the architecture studio is insufficient and not in the acceptable range stated in the Malaysian: Standards 1525:2007 and  not evenly distributed.  The study also concluded that the current studio environment is not condusive and appears monotonous. 

Strategic threats to energy security as risks of quality of people's life

2020 ◽  
Vol 16 (4) ◽  
pp. 730-744
Author(s):  
V.I. Loktionov
Keyword(s):  
Quality Of Life ◽  
Energy Security ◽  
Well Being ◽  
Scientific Methods ◽  
Analysis And Synthesis ◽  
General Scientific ◽  
And Performance ◽  
Economic Well Being ◽  
The Way

Subject. The article reviews the way strategic threats to energy security influence the quality of people's life. Objectives. The study unfolds the theory of analyzing strategic threats to energy security by covering the matter of quality of people's life. Methods. To analyze the way strategic threats to energy security spread across cross-sectoral commodity and production chains and influences quality of people's living, I applied the factor analysis and general scientific methods of analysis and synthesis. Results. I suggest interpreting strategic threats to energy security as risks of people's quality of life due to a reduction in the volume of energy supply. I identified mechanisms reflecting how the fuel and energy complex and its development influence the quality of people's life. The article sets out the method to assess such quality-of-life risks arising from strategic threats to energy security. Conclusions and Relevance. In the current geopolitical situation, strategic threats to energy security cause long-standing adverse consequences for the quality of people's life. If strategic threats to energy security are further construed as risk of quality of people's life, this will facilitate the preparation and performance of a more effective governmental policy on energy, which will subsequently raise the economic well-being of people.

TECHNOLOGICAL ASPECTS OF HIGH QUALITY RAW MATERIAL OBTAINING FOR PECTIN PRODUCTION

1970 ◽  
pp. 47-50
Author(s):  
I. A. Ilina ◽  
I. A. Machneva ◽  
E. S. Bakun
Keyword(s):  
Raw Materials ◽  
Thermal Characteristics ◽  
Environmental Safety ◽  
Raw Material ◽  
High Quality ◽  
Temperature Conductivity ◽  
Drying Temperature ◽  
Plant Raw Materials ◽  
Gel Forming Ability

  The article is devoted to the study of the chemical composition, physical and thermal-pfysical characteristics of damp apple pomaces and the identifying patterns of influence of drying temperature the functional composition and gel-forming ability of pectin. The research is aimed at obtaining initial data for the subsequent calculation of the main technological, hydro-mechanical, thermal, structural and economic characteristics of devices for drying the plant raw materials, ensuring the environmental safety and high quality of pectin-containing raw materials, the reducing heat and energy costs. As a result of the study of the thermal characteristics of apple pomaces, the critical points (temperature conductivity – 16.5 x 10-8 m2/s, thermal conductivity – 0.28 W/m K, heat capacity – 1627 j/(kg K)) at a humidity of 56 % are determined, which characterizing the transition from the extraction of weakly bound moisture to the extraction of moisture with strong bonds (colloidal, adsorption). It was found that the pomaces obtained from apples of late ripening have a higher content of solids (21-23 %), soluble pectin and protopectin (2.5-4.5 %). Dried pomaces obtained from apple varieties of late ripening contain up to 25 % pectin, which allow us to recommend them as a source of raw materials for the production of pectin. The optimum modes of preliminary washing of raw materials are offered, allowing to the remove the ballast substances as much as possible. It is established that when the drying temperature increases, the destructive processes are catalyzed: the strength of the pectin jelly and the uronide component and the degree of pectin esterification are reduced. The optimum drying temperature of damp apple pomaces is 80 0C, at which the quality of pectin extracted from the dried raw materials is maintained as much as possible. It is shown that the most effective for the pectin production is a fraction with a particle size of 3-5 mm, which allow us to extract up to 71 % of pectin from raw materials.

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