Browsing BS Biology Theses by Issue Date

Now showing items 1-20 of 650

A Study on the Relationship Between the Extent of Rigor Mortis and the Different Possible Causes of Death in Rats

Sandejas, Jonathan Emmanuel Arce I. (1988-02)

This research was conducted so as to determine whether a relationship does exist between the time needed for the onset of Rigor mortis and the different types of death that can be applied on to the rats. The rats were ...
A Comparative Study of the Anti-Bacterial Effects of Ampalaya, Bawang, Bayabas, Duhat and Ikmo in Staphylococcus aureus

Tinio, Lawrence S. (1988-09)

This thesis is a comparative study of the antibacterial effects of the extracts of ampalaya, bawang, bayabas, duhat and ikmo on Staphylococcus aureus. The herbs were cut, decocted and applied to cultures of S. aureus using ...
A Histological Study on the Node of Lagerstroelia Speciosa (Linnaeus) and Psidium Guajava (Linnaeus)

Viñola, Emily B. (1988-11)

Permanent slides of cross sections of different stages of the stems and petiole of Lagerstroemia speciosa (Linnaeus) and Psidium guajava (Linnaeus) were prepared, using the Paraffin method. Using the prepared slides, the ...
The Effect of Bayati (Anamirta cocculus L.) on Damselfish (Pomacentrus coelestis L.)

San Felipe, Michael C. (1989-02-24)

For many decades, the people of Pagsanjan Laguna have used the Bayati fruit in catehing fishes from the Pagsanjan River. Ripe fruits of the plant were dried, crushed, mixed with earthworms and thrown into the river. This ...
A comparative Study of the Toxicity of Caesalpinia Pulcherrima (Caballero) and Nerium Indicum (Adelfa) applied in Various Concentrations to Culex Sp. Larvae and Sitophilus Zeamays Adults

Pacio, Glenn (1989-03)

Caesalpinia pulcherrima (Caballero) and Nerium indicum (Adelfa) leaf extracts in various concentrations were tested for toxicity against 20 mosquito larvae, Culex sp. And 20 corn weevils, Sitophilus zeamays, by the immersion ...
Study of the Efficacy of the Different Insecticidal Baits in the Control of Cockroaches (Periplaneta americana)

Villaceran, Arlene J. (1989-03)

Four insecticides namely Malathion, Chlordane, Drione and Plaster of Paris were tested for their efficacy against species of Periplaneta americana. Of the four insecticidal baits used, Drione was the best for controlling ...
Studies on the Clastogenicity and Mutagenicity of Irradiated Papaya

Yango, Angelito F. Jr. (1989-03)

The Mutagenicity and clastogenicity of gamma irradiated papaya extract at dose levels of 50, 100, and 150 kR were investigated using the Rec-Assay and Micronucleus test. Rec-Assay, an in vitro microbial assay using Rec+ ...
The Effect of Dietary Copper on Rat Carcinogenesis by 4’-Ethyl-Dimethylaminoazobenzene

Padilla, Genevieve T. (1989-10)

Experiments are described which show that copper acetate has a powerful retarding effect on hepatic tumor development in rats with 4’-Ethyl-Dimethylaminoazobenzene treatment. Thus, of 5 rats which survived the treatment ...
A Comparative Study on the Molluscicidal Effect of Whole Leaf and Leaf Extract of Blumea balsamifera Linn. (sambong on Pomaceae sp. (Golden apple snail)

Cabalum Margaret Jane S. (1990-05)

Two hundred seventy golden apple snails (Pomaceae sp.) were divided into six treatments: I (control), II (leaf feed method), III (12.5% leaf extract), IV (25%) V (50%), VI (75%). After 48 hours of testing, it was observed ...
A Study on the Histopathological Effects of Gamma Radiation on the Gonads of Mice 24 Hours and One Week After Exposure

Gapuz, Evelyn G. (1991)

Fourty mice, twenty male and twenty females were divided into five groups and given whole-day exposure of different levels of gamma radiation : 0, 150, 300, 600 and ‘750 rads. Two males and two females from each level were ...
A Comparative Study on the Direct Contact and Fumigant Toxicity of Zingiber Officinale and Allium sativum on Culex pipiens guinguefasciatus

Bernales, Noel (1991)

Extracts were obtained from Z. officinale rhizomes and A. sativum cloves. Direct contact of both extracts was tested on Culex pipiens guingguefasciatus using 25%, 50%, and 75% concentrations, through spraying. Each treatment ...
The Effect of Temperature on the Toxicity of Petroleum and Potassium Dichromate on the Tilapia Sarothenodon vulcani

Fermindoza, Noel (1991-03)

Sublethal doses of petroleum (1 ppm) and potassium dichromate (130 ppm) are mixed in two separate tanks. Sarothenodon vulcani are placed in the 2 tanks for 24, 48, 72, hrs. Temperatures are then increased in the 2 tanks. ...
The Effects of Naphthalene Solid/Dust on the Cornea Proper of Rattus norvegicus albinus

Fernandez, Desiree T. (1991-03)

Histological sections of the eyes, exposed to naphthalene dust for varying periods, showed different degrees of localized edematous conditions of the corneal epithelium—particularly, on the basal cells—as manifested by ...
The Influence of L-Ascorbic Acid on the Possible Repression of B-Lactamase Synthesis and Function Studied in Ampicillin-Induced Resistance of Haemophilus influenzae

Cacho, Richard Ronald B. (1991-03)

An induced B-lactamase mediated resistance was investigated in meningitis-causing Haemophilus influenzae. The organism was isolated from three different patients with purulent ear discharge making three isolates. It was ...
Morphological Effects of Gonadotrophic Inhibition by Hormonal Contraceptives on the Ovary and its Oogenesis Processes of the Ratus norvegicus

Duran, Manuel T. Jr. (1991-03)

The experimental set-up consisted of 3 rats for the control, 3 for the normal treatment and 3 for the overdose treatment group. The treatment group were fed orally with the drug Lo-gentrol from the beginning of their estrus ...
The Effect of Varying Low Level Dosages of Gamma-Irradiation on the Susceptibility of Salmonella typhimurium on Chloramphenicol

Divina, Maria Criselda M. (1991-03)

The effect of varying low-level dosages of gamma irradiation on the susceptibility of Salmonella typhimurium on chloramphenicol was investigated. Sixteen mice (Mus musculus) were used as hosts for S. typhimurium, which was ...
A Survey of Cestodes in the Gut and Liver of Rats (Rattus sp.) in Metro Manila

Cabazor, Ma. Fareeda A. (1991-03)

Three rats come from a supermarket in Makati, one from a residential area in Tondo and the last from a residential area in Caloocan City, are obtained from pest control companies, sacrificed and dissected. Cestodes are ...
The Effect of Varying Concentrations of Diesel Oil on the Intestinal Epithelium of Tilapia nilotica

Chi, Eleanor T. (1991-03)

Four groups of two-month old Tilapia nilotica were exposed to oil concentrations of 5, 10, 15, and 20 ppm for a period of two weeks. Histological sections were processed from the intestines of fish from the four groups. ...
Taxonomic Survey of the Hard Corals of Sombrero Island in Anilao, Batangas

Dy, Guinevere N. (1991-03)

This study involves the taxonomic survey of hard corals from Sombrero Island in Anilao, Batangas. The corals were collected 0-15 meters away from the shoreline, with the use of a transect. Collection was done manually ...
Antibacterial Effects of Tamarindus Indica (Sampalok) Carica Papaya (Papaya), and Averrhoa Bilimbi (Kamias) Fruit Substances on Pseudomonas aeruginosa and Staphylococcus aureus

Borja, Joaquin Peter S. (1991-06)

Fruit substances derived from Tamarindus indica, Carica papaya, and Averrhoa bilimbi were tested for inhibitory effects on the growth of Pseudomonas aeruginosa and Staphylococcus aureus, both of these bacteria cause skin ...

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