APCBEE Procedia最新文献

In 2010 a project entitled “Integrated Support System for Management and Protection of Water Dam Reservoir (ZiZOZap)” was initiated, to aid solving water management problems on a river and dam reservoir formed on it. An innovative system of continuous monitoring was created, that encompassed selected physical and chemical parameters of river and lake waters in three chosen sites. This article presents a selection of results, that were obtained thanks to the continuous monitoring. In particular, monitoring of parameters with high diurnal variability benefits from this measurement design. Sites that are essential for water management are recommended to be monitored in this way.

This study presents the preparation of tungsten trioxide (WO₃) nanoparticles by acidic precipitation using sodium tungstate as a precursor. Composite synthesis was selected among various modification methods to investigate catalytic activity improvement. WO3:polyaniline (PANI) nanocomposites with different weight ratios were prepared. The synthesized nanocomposites were characterized by field emission scanning electron microscopy, X-ray diffraction, thermogravimetric analysis–differential thermal analysis, and Fourier transform infrared spectroscopy. Results revealed the successful preparation of WO₃: PANI nanocomposites. These nanocomposites exhibit higher thermal stability compared with PANI, indicating a satisfactory interaction between WO₃ and PANI. The synthesized nanocomposites are being evaluated for their catalytic activity.

This study was conducted in National Pingtung University of Science and Technology during winter season to determine the effect of vermicompost on productivity of muskmelon seedling (Cucumis melo L.). Vermicompost produced from rice waste, were mixed at rate of different concentration into rice hulls ash and coconut husk. The pH, electrolytic conductivity (EC), water holding capacity (WHC), concentration of macro-micronutrient in substrates, vegetative growth, plant biomass, concentration of total macro-micronutrient in shoot were recorded. The result showed that using substrate that mixture of vermicompost with rice hulls ash and coconut husk following rate 1:1:1 respectively gave highest value of germination rate, plant height, leaf area, plant biomass and the concentration of P, K, Ca and Fe. Factors contributed to the in increasing of muskmelon seedling growth may be result of an improvement of physical and chemical properties of the substrate when combination between vermicompost, rice hull ash and coconut husk.

The objective of this study is to determine the dominance impact of environmental factors such as illuminance, humidity and temperature on worker productivity by Taguchi Method. A study was conducted under simulated environment factor which examined were the illuminance, humidity and temperature of the surrounding workstation area in the closed simulation lab. A set of representative data including the illuminance, humidity and temperature level and production rate were collected during the study. The production rate data were collected through observations and survey questionnaires while the illuminance, humidity and temperature level measured by valid apparatus and equipment. The Taguchi method was utilized to find the sequence of dominant factors that contributed to the productivity of the operator at that specified production workstation. The study reveals that the dominant factor that contributed to the productivity was temperature followed by illuminance and relative humidity.

In the present investigation, a deterministic mathematical model of the pharmacokinetics of Metformin was developed using the first principle of chemical engineering (mass balance). The mathematical model developed with precision, can predict the concentration time history of the drug interest in stomach, liver, intestine, and the peripheral areas. According to this model, after administration, the drug is dissolved in the stomach following first order kinetics. The intestinal absorption of Metformin is majorly mediated by plasma membrane monoamine transporter. In liver Metformin takes part in various metabolic pathways which subsequently aid the adsorption of the drug in different cellular systems. No intermediate metabolites of Metformin have been identified till now. The major route for elimination of Metformin is through tubular secretion, in an unchanged form in the urine. The outcome of the predicted data closely matches the experimental finding, extracted after a meticulous scrutiny of the accessible literature, and results of clinical trials. The model is highly realistic and pragmatic in its practice.

This research aimed to study the ammoniation-fermentation technology based on palm plantations waste in increasing productivity of Pampangan Buffalo. Research used a Latin Square Design (RBSL) 4 X 4. The treatment consists of A = Grass+Concentrates, B = Grass+Palm Fiber+Concentrates, C = Grass+Ammoniation Palm Fiber+Concentrates, D = Grass+Ammoniation-Fermentation Palm Fiber+Concentrate. The observed variables were consumption of dry matter, crude protein, TDN, digestibility of (dry matters, organic matter, crude protein, and crude fiber), and body weights. The research showed that treatment using ammoniation-fermentation technology (EM-4 and urea) not significantly effected (P>0.05) consumption of dry matter, crude protein, TDN, digestibility of (dry matters, organic matter, and crude fiber), and body weights, but significantly effected (P< 0.05) digestibility of crude protein. It was concluded that the addition of urea and EM-4 through the amoniation-fermentation process were relatively equal over the consumption, digestibility, and body weight gain of Pampangan Buffalo.

The aim of this reserch were investigate the substitution of sawdust with Vetiveria zizaniodes (L.)Nash, Sri Langka cultivar on the media in mycelia growth of Ganoderma lucidum in plastic bag. The suitable three media from eleven formulas with different weight ratio of sawdust and V. zizaniodes leaves at 100:0, 0:100 and 20:80 are selected in this research and gave the biological efficiency with 42.72, 00.00 and 40.71% respectively. This results show the opportunity for substitution of sawdust with V. zizaniodes leaves which can reduce the production cost of G. lucidum. Nutrition analysis of fruiting body of mushroom are cultivated on different type of the substrates, particularly sawdust 100:0 in plastic bag, found more protein than cultivated in sawdust 20:80 with 10.29 and 8.45 mg/100 g dry weight in G. lucidum respectively. In amount of essential amino acid and non-essential amino acid of G. lucidum cultivated sawdust 100:0 gave more amino acid than 20:80.

Catalyst deactivation and its environmental consequences are believed to be an important issue seriously needed to be dealt with. In this study, a mathematical model of a spherical bed along with the catalyst deactivation in a long-term operation period for the methanol synthesis was investigated. The inside space of the two spheres reactor configuration was filled with the catalyst. The materials in the outer surface of the inner hemisphere were understudied. The equations solved at two dynamic and static levels via the finite difference method. It was revealed that, the resulting pressure drop as well as operation costs might have been lowered while the production capacity enhanced in comparison with the conventional reactors and overall leading to better environment protections. Furthermore, the analysis of the catalyst deactivation behavior indicated that a series of parameters including the reactor temperature and size, as well as the entering carbon monoxide and feed rates played an important role in the catalyst deactivation.

Occupation of buildings of high importance like hospitals and shelters after earthquake is a risky yet vital task for rescue workers. This paper presents a structural health monitoring system to ensure the safety and reliability of the buildings after earth quack. It is understood that ground motion and lateral displacement due to earthquack may cause deformation and thus excessive strain and stress at the main structural elements. Therefore, the building may suddenly goes to failure, requiring a reliable yet efficient health monitoring system. An array of piezoelectric sensors is mounted at desired location to measure the deformation and stress at critical points. The voltage generated by piezoelectric sensors is sent to computer via a data acquisition system. Measuring and monitoring the trend of changing sensors voltages indicate the probability of existing damages and the rate of propagation. The performance-based seismic is reported based on the nonlinear static analysis (pushover) under the influence of the lateral loading and structural behaviour through the Sap2000® software and FEMA356. The proposed model is verified for a three-story steel structure building. The effects of the lateral displacement caused by earthquake forces on strain and sensors voltage are investigated for each main element in each floor. Increasing the strain and displacements at selected elements increases the voltage generated at piezoelectric sensors. Continuous monitoring and analysis of generated signals helps the building manager to apply warning alarm or call for evacuation of the building.

Pollinators are crucial in agricultural crop production as a large variety of crops including horticultural and vegetable crops depend essentially on insect pollination. Unfortunately over the past decades, the pollinator population in the agricultural system has declined across the globe due to over use of synthetic chemical pesticides. Disruption of ecosystem service provided by pollinators due to pollinator decline in chemical intensive cropping systems has assumed a global dimension. This paper addresses how farming practices and designs affect the diversity of pollinators. In this study the relationship between pollinator density and brinjal (Solanum melongena, Fam. Solanacae) productivity was evaluated in a chemical intensive vegetable cropping system in North 24 Parganas, West Bengal, India (hot sub-humid to humid eco-region; Lat 22°22’ 26, N Lon 88°21’ 26 E). By comparing pollinator density and fruit set between ecological farm and chemical intensive farm, it was investigated whether pesticide application affects pollinator visitation and in such a scenario what was the impact on brinjal production. Visitation rate of pollinators (butterflies and bees) was significantly higher in ecological farm as compared to the conventional farm (Mann Whitney U test, p < 0.001).