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Comparative Analysis on Lettuce Quality Produced From Urban Agriculture and Organic Farming

Abstract

A previous project has proven that urban agriculture is feasible and more environment friendly than traditional agriculture. The question if the yield of urban agriculture through hydroponics is comparable to organic farming or not arose. Evidence gathered showing comparability should provide added value to the products of urban agriculture. This can in turn make the practice of urban agriculture not only more profitable but also more attractive. A hydroponics setup was placed in the rooftop of St. Joseph Hall of De La Salle University in Manila. The organic farming setup was placed in the grounds of De La Salle University in Dasmariñas City, Cavite. Read More

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Fish Species Abundance and Species Richness in a Diverted Channel in Ilog, Negros Occidental, Philippines

Abstract

The effect of channel diversion in Ilog, Negros Occidental, was studied by comparing fish species abundance and species richness in the two river mouths, namely, Bungol Channel in Andulauan and Bocana in Lower Ilog River of the Ilog-Hilabangan River System. Data were collected for six months, from March to May 2011 for the dry season and from July to September 2011 for the wet season. Samples were collected using cast net and other indigenous gears in the locality. About 56 fish species belonging to 49 families were noted, and only three of these were introduced species. Fish species abundance was significantly different (t-test, p = 0.04), only in Bocana during the dry season. Nevertheless, fish species richness varied with season, as evidenced by the higher values observed in different river mouths. Tidal flow can significantly contribute to fish abundance and species richness, particularly during the dry season.  Read More

Educational Vulnerability Assessment of Youth on Natural Disasters: The Case of Brgy. Paciano Rizal, Bay, Laguna

Educational Vulnerability Assessment of Youth on Natural Disasters: The Case of Brgy. Paciano Rizal, Bay, Laguna

Abstract

This study assessed the educational vulnerability of youths in Brgy. Paciano Rizal, Bay, Laguna, by determining their perceived level of awareness on natural disasters and disaster management. Seventy youth respondents aged 13 to 19 years old were randomly selected using stratified random sampling. The data were gathered through the personal interview method. The data were analyzed using descriptive statistics and thematic analysis and with reference to Maskrey’s concept of educational vulnerability. Results of the study describe that the youth in Brgy. Paciano Rizal perceived themselves to have a high level of awareness of natural disasters and disaster management.  Read More

Chang Flores

Tegumental Studies of Adult Fasciola gigantica (Giant liver fluke) from Philippine Carabaos (Bubalus bubalis) Using Scanning Electron Microscopy for Lead Bio-Indicator Analysis

Abstract

Recent studies show that parasites such as liver flukes have a capacity to bioaccumulate heavy metals significantly than the liver and muscle tissues of the host without compromising effects on them. One such heavy metal is lead (Pb) which is an abundant pollutant in the environment.Therefore, this study aimed to evaluate the effects of lead in the tegument of Fasciola gigantica (giant liver fluke) isolated from infected livers of carabaos in vitro using the following concentrations of lead: 0ppm, 110ppm, 160ppm, and 210ppm. Read More

Cordel Ilao

A Computer Assisted Diagnosis System for the Identification/Auscultation of Pulmonary Pathologies

Abstract

Statistics show that the primary cause of morbidity and mortality among Filipinos are pulmonary illnesses. These illnesses could have been prevented if detected and treated early. With the physicians medical knowledge and experience, early detection of possible common pulmonary diseases can be performed using a stethoscope. However, with the current physician-to-population ratio in the country, early detection of respiratory diseases may not be performed on most cases especially in the rural areas, causing even benign cases to lead to mortality. In this paper, we present the development of a system that classifies lung sound for possible pulmonary pathology.Using an electronic stethoscope, lung sounds were collected from healthy individuals and patients with common pulmonary problems for the developed systems training and evaluation. The collected data were pre-processed in order to remove mechanical and other external noises. Read More

Alam

The Assessment of the of E-waste Management Generated from the Cellular Phones, and Laptops/ Personal Computers in the Philippines

Abstract

This study focuses on the management of e-waste generated by the disposal of personal computers, laptops, and mobile phones because of the extraordinary growth in the use of these products over the past few years by the Filipino population. The aim was to explore the current methods of disposal of the aforementioned gadgets and to gather a baseline data in terms of the disposal methods of these three electronic gadgets within the geographical boundary of Metro Manila and the suburbs of Manila, Philippines.An attempt was also made to find the level of awareness of the respondents about the hazards of e-waste. The Filipino population largely stores three electronic gadgets; namely cellular phones, laptops, and personal computers once the models become old and obsolete. The other most popular disposal method is selling the gadgets to junk shops. Very low percentage of people actually recycled their products. Sixty-nine percent of the respondents did admit that they were actually concerned about the impact of improper disposal of e-waste on human health and environment.  Read More

Acetamide as potential C- and N-source of the extremely acid and heavy metal resistant filamentous fungus, Bispora sp.

Acetamide as potential C- and N-source of the extremely acid and heavy metal resistant filamentous fungus, Bispora sp.

Abstract

The extremely acid resistant filamentous fungus Bispora sp. (possessing two distinct growth optima at pH 1 and pH 7) is able to utilize metal complexed cyanides as N-source and to grow with acetamide as the only nitrogen and carbon source at both pH 1. 0 and 7. 0, whereas little growth is observed with formam ide as N-source. The nitrogen content of the fungus grown with acetamide is similar tp ‘that of the control grown with NH4+ as N-source but higher than those cultures deprived of nitrogen. In the absence of appropriate substrates the fungus did not express amidases such, as urease, formamidase, acetamidase, whereas in the presence of formam ide and acetamide, formamidase activity, but no acetamidase activity was observed. Read More

Air Borne Lead Contamination of Trees in Metro Manila

Air Borne Lead Contamination of Trees in Metro Manila-A Study of Environmental Hazards Related to Leaded Fuels

Abstract

The environmental hazards originating from the use of leaded fuel in Metro Manila were analyzed indirectly by investigating the Ph content and contamination of leaves of trees exposed to heavy traffic along Taft Avenue in comparison with three sites with less or no traffic in the countryside. Both the internal Pb content and the external Pb load of plants were measured. Internal Pb content of samples along Taft Avenue and the countrvside yielded an average of 6.5 mg and 0.6 mg Ph per kg dry weight respectively while that of external Pb load were 18.9 mg and 2. 74 mg Pb per kg dry weight respectively. Read More

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Lead Uptake and Growth Responses in Pistia Stratiotes Linn. (Quiapo)

Abstract

Pistia stratiotes was cultured in hydroponics solutions amended with three different lead (Ph) levels-2ppm, 4ppm, and 8ppm AAS analysis revealed that Ph accumulation in the plant tissue (BCF) increased with increasing Ph levels in the culture solutions, Ph accumulation had caused the development of chlorotic leaves and decreases in the fresh biomass of the plants. However, there was no interference of the Ph accumulation on the growth responses of Pistia in terms of moisture, chlorophyll, and protein contents. These findings imply that P. stratiotes might be useful in heavy metal decontamination process in industrial and domestic wastewaters. Read More

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Light & Shadow at the DLSU: Not a problem at all for the quantum yield of photosystem II (Y) of plants growing on the campus: But how to determine Y experimentally?

Abstract

This science education report introduces the technique of pulse amplitude modulated (PAM) fluorescence measurement of chlorophyll for the sensitive, noninvasive and rapid determination of quantum yield of photosystem II (y) in both laboratory and field experiments by the application of a portable chlorophyll fluorometer, the so-called Mini-PAM.  In a case study we applied the Mini-PAM for the comparison of Y of various ferns and higher plants adapted to different light intensities on the DLSU campus. Read More