Mallari, Cristel Joy C. <br/><br/>
Characterization, Biological, And Molluscicidal Activities Of Ziziphus Talanaibased Nanozeolite Against Invasive Apple Snails  [manuscript] / 
Cristel Joy C.Mallari. 
 - Magalang, Pampanga :  Pampanga State Agricultural University,  July 2022. 
 -  28 cm. + 1 computer disc (4 3/4 in.) 
<br/><br/>MALLARI, Cristel Joy C. July 2022. #CHARACTERIZATION, BIOLOGICAL, AND MOLLUSCICIDAL ACTIVITIES OF Ziziphus talanaiBASED NANOZEOLITE AGAINST INVASIVE APPLE SNAILS, Pampanga State Agricultural University, Magalang, Pampanga.     Adviser : Dr. Jacqueline V. Bagunu     This experimental research, which generally aimed to determine the molluscicidal effect of Ziziphus talanai-based nanozeolite on Invasive Apple Snails (IAS), was conducted from December 2020 to April 2022 at the laboratories and rice fields of Pampanga State Agricultural University. Several treatments were used in the different laboratory experiments but generally all treatments in the laboratory were laid out following the Complete Block Design. Field laboratory experiments were laid out following the Randomized Complete Block Design.     Results showed that Z. talanai leaf extract contains compounds such as saponins and glycosides, which may explain the bioactivity of the plant. The treatment of 600 ppm 2. talanai extract alone as well as in combination with nanozeolite showed promising molluscicidal activity as shown in the laboratory and field experiments. These treatments were found to be highly toxic using the Brine Shrimp Lethality Assay. The nanozeolite was found suitable as a vehicle to enhance the molluscicidal activity of the botanical being investigated with mean particle sizes of 68.6nm and 15.7nm for 4. talanai and nanozeolite, respectively. The histopathological report of Invasive Apple Snails treated with Ziziphus talanai and 4Z.talanai-based nanozeolite validated the bioactivity of the synthesized products. They showed structural alterations and lesions, which were comparable with those of the synthetic molluscicide-treated snails. Hence, the use of nanozeolite as an additive and a vehicle of Z.talanai extract is a viable option to combat Invasive Apple Snails.     Keywords: Mollusicicidal, Nanozeolite, IAS, Ziziphus talanai     Master of Science in Biology July 2022     ABSTRACT     CAPATI ~ESPIRITU, Darlene Jane WN. June 2022. DISTRIBUTION AND TRANSMISSION PATTERN OF SARS-CoV-2 IN THE MUNICIPALITY OF MAGALANG, PAMPANGA, Pampanga State Agricultural University, Magalang, Pampanga.     Adviser: Dr. MICHAEL ANGELO C. NICDAO     The Municipality of Magalang confirmed local transmission of CoViD-19 on April 17, 2020. CoViD-19 cases with positive real-time reverse transcription-polymerase chain reaction (RT-PCR) were studied for their characteristics and epidemiological time-to-event distributions. Data are requested from the Municipal Health Officer of Magalang, Pampanga with the recorded 1,709 confirmed cases from the first case up to December 31, 2021. In this research, the distribution and transmission pattern of SARS-CoV-2 in the population of Magalang, Pampanga, as well as the epidemiological profile, source of infection, comorbidity, and mortality of CoViD-19 were analyzed.     The age group with the highest number of cases (420) was recorded as 21-30 years old and the lowest was in the age group of 90-99 (6 cases). The males and the females were more or less of the same percentage distribution. Based on residency Barangay San Isidro had the most cases with 15.8% (270 cases) and with a population density of 117.91, and Barangay Escaler had the least cases with 0.53% (9 cases) with a population density of 15.82. From the month of April to October 2021, the number of cases remained persistently high, with the greatest death rate with a fatality rate of 6.44%. Cough and dyspnea are the most prevalent onset symptoms in mortality cases. Moreover, the age of confirmed cases has a positive correlation with mortality; however, there is no correlation between sex and mortality as well as residency and mortality. In the transmission of SARS-CoV-2, most of the infected are from an unknown source. It is a negative correlation that the increase in mortality is due to an unknown source of infection. In addition, comorbidity and mortality of CoViD-19 cases are positively correlated. The findings will be beneficial in public health management and will serve as a record for the CoViD-19 Pandemic.     Keywords: CoViD-19, SARS-CoV-2, Confirmed cases     Master of Science in Biology July 2022.