2008 Analysis of the Geometry of Drilled Holes in Demolition ...

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project aimed to develop a process of using corn leaves for the production of ethanol. Corn leaves were biodegraded with the fungi Trichoderma reesei and Trichoderma harzianum. After two weeks, the resulting solution was tested for simple sugars using Benedict’s solution. Saccharomyces cerevisiae was added to the solution to ferment the glucose into ethanol. The solution was distilled after one week to separate the ethanol. The solution tested negative for simple sugars after a week of biodegradation. The amount of simple sugars increased as the days passed and after two and a half weeks, the solution turned rich green when tested. After distillation, the density of the substance was measured to be 0.75g/mL, the same as the density of ethanol. However, when the substance was burned, it did not catch fire as ethanol should. Although the project succeeded in converting cellulose into simple sugars as shown by the positive Benedict’s solution result, the substance obtained after distillation could be another substance with the same density or ethanol that needed further purification. This, however, needs further testing. #51 Isolation and Identification of Cadmium Tolerant Bacteria from the Philippine Science High School Creek Maria Angelica T. Gamo, Jarelle Anne Carisse P. Gonzales, Sophia Jobien M. Limlingan ABSTRACT Bioremediation, the method by which bacteria and fungi degrade pollutants from contaminated water and land, is one of the major methods currently used to treat polluted waters. The bacteria convert pollutants such as heavy metals dissolved in the water into non-polar compounds which precipitate at the bottom, lessening the incidence of the heavy metals being absorbed from the water. It has been of great concern to find more efficient organisms that can be used for bioremediation. Other methods of treating waste water are expensive and inefficient, while organisms currently used for bioremediation are not readily available in the Philippines. Therefore, a species of cadmium-tolerant bacteria was isolated from the Philippine Science High School creek, purified, and sent for identification. Three different concentrations of a common heavy metal pollutant, cadmium as cadmium sulfate, were prepared, sterilized and placed in Petri plates. Bacterial isolates from the PSHS creek were inoculated onto CdSO4 plates, sealed and incubated at room temperature (37ºC). Isolated colonies that formed after 24 hours were then transferred to nutrient broth in test tubes. A random test tube was chosen and was sent to the University of the Philippines Los Banos Microbiology Laboratory for identification.
The bacteria that were sent were identified as Proteus mirabilis. This species is pathogenic and causes Urinary Tract Infection (UTI), but if it is proven useful for bioremediation, genetic engineering may be used such that the bacteria’s cadmium degradation capabilities may be employed without harming other living things. Further improvements on the project could be done by testing the species’ cadmium-degrading capabilities, and by determining its maximum tolerance to cadmium and other heavy metals. Other cadmium-reducing species might also be living in the creek. Future researches regarding the topic may determine the other capabilities of the bacteria. #52 Viability of Bamboo (Bmabusa bambos) as Cost-Effective Water Filter Matthew Ma. Leandro S. Gana, Ma. Eda Roselle M. Manatad, Tami Yvette L. Reyes ABSTRACT Bamboo (Bambusa bambos) was selected as the primary material in the construction of a cost-effective water filter because of its availability in the Philippines, its natural antibacterial properties and immunity from mould and mildew. The project was conducted by filtering different concentrations of contaminated water through two different filtration models (screen-type and modified mesh-type). The contaminant was landscaping silt, in concentrations of 0.25 grams, 0.5 grams and 1 gram per 100 mL of distilled water. The filtering process was repeated with fresh concentrations twice for repeatability. The waxy outer layer of the bamboo was stripped before cutting the bamboo. It was prepared two ways: 6” by 0.25” strips for the screen-type model, and shredded pieces for the mesh-type model. Approximately 100 grams of shredded bamboo were compressed and utilized per mesh-type filter. Analysis of Variance (ANOVA) test was utilized to compare the remaining concentrations of silt with initial concentrations. The filtered water was evaporated to leave the remaining silt for weighing (concentration test). With both set-ups, the results were negative towards declaring the filtration models usable. The project was a failure. The research done to facilitate its construction however produced information that bamboo fiber is conducive to the design of filters. The natural anti-mould/bacterial properties of bamboo indicate it could be a suitable filter material, if the technology or materials (bamboo cloth) were available in the Philippines. This project will hopefully serve as a stepping stone for future projects aiming to utilize these materials in more technologically conducive times.
Page 1 and 2: 2008 #1 Analysis of the Geometry of
Page 3 and 4: #4 Production of Cellulose-Chitin F
Page 5 and 6: #7 Comparative analysis of the effe
Page 7 and 8: frequency. Based on the results, th
Page 9 and 10: Bacterial colony counts were done b
Page 11 and 12: added to every five hundred mL extr
Page 13 and 14: In this study, papaya seeds were dr
Page 15 and 16: #21 Development of a Kinematics Sim
Page 17 and 18: #24 Different Concentrations Of Coc
Page 19 and 20: #27 Feasibility of Solanum melongen
Page 21 and 22: the height and width of the area bo
Page 23 and 24: the filter. Each design also consid
Page 25 and 26: algorithm involves filtering the pi
Page 27 and 28: easily dissolved in water, affect a
Page 29 and 30: applications are many and various,
Page 31 and 32: the one made by the antibiotic.We h
Page 33: #49 The production of a bioplastic
Page 37 and 38: The project tested the feasibility
Page 39 and 40: amounts and combinations to determi
Page 41 and 42: production of acetylcholinesterase,
Page 43 and 44: electrophoresis (AGE0 was used to d
Page 45 and 46: leaching properties and can be used
Page 47 and 48: #69 Determination of a more effecti
Page 49 and 50: #72 Evaluation of different oils wi
Page 51 and 52: zones of inhibition of the extracts
Page 53 and 54: was compressed at three different r

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