The Philippines is one of the biodiversity hotspots of the world, being home to most of the endangered species. It is important to give utmost attention to these plant taxa considered threatened, endemic, and economically important. the primary concern of this study to provide data on the occurrence and distribution of the threatened seed plants in Mindanao. Determination of these seed plants was based mainly on existing literature. Likewise, field observations were done in selected mountains in Mindanao to validate the occurrence and conservation status of these plants listed in the Philippine database. A total of 190 species of threatened seed plants were reported from Mindanao comprising 180 angiosperm species and ten gymnosperm species. More than half (133 species) of these threatened plants are endemic to the Philippines; 46 are placed in the critically endangered category, 69 endangered and 67 vulnerable. The families Orchidaceae and Dipterocarpaceae contained the highest number of threatened species. The family Melastomataceae is distinctly noted to have species which are all endangered and endemic to the country. The highest occurrence of threatened seed plants was observed in Mt. Malindang, Misamis Occidental. It is concluded that Mindanao houses some threatened, endemic, and economic seed plants.
Keywords: seed plants, endemic, endangered, vulnerable
Situation at Pulangui Reservoir in Maramag, Bukidnon is a big problem for the hydroelectric power plant. This study explores the potential of Pulangui alluvial sediments from five different locations for compressed stabilized earth block (CSEB) production based on the soil consistency and textual properties of sediments and compressive strength of the blocks. The effect of coal fly ash as a partial replacement for ordinary Portland cement as a binder was also examined. The results showed that the soil consistency and textual properties of alluvial sediments failed to pass the suitability criteria for CSEB. Additional sand was added in 1:2 ratio (soil to sand). The replacement of cement with coal fly ash tends to increase its compressive strength up to 20% replacement of cement. The highest compressive strength was observed from the alluvial soils of Panadtalan with 4.32 a. CSEB is viewed to have certain potentials that have the comparative advantage over other materials like hollow blocks but needs a promotional campaign to encourage its usage. the comparative cost analysis revealed that the CSEB with coal fly ash is only 4.30% cheaper compared to the conventional method. Overall, the alluvial deposits of Pulangui reservoir and coal fly ash could be utilized for CSEB production.
Keywords: stabilization, alternative binders, low-cost housing application
One of the tools to measure the environmental impacts of the utilization of natural resources is determining ecological footprint (EF). The study assessed how one’s lifestyle could have impacts on the condition of our natural resources. EF study was conducted among households within the premises of Central Mindanao University, Bukidnon, Philippines. One hundred (100) households were interviewed using a pre-conducted questionnaire based on the data needed for the downloadable EF spreadsheet program. EF of the respondents was analyzed using descriptive statistics and multiple linear regression. The results revealed a higher per capita EF among the respondents (3.81 global hectares) compared to the national relationship between household size and EF and a positive relationship between income EF.
Keywords: ecological footprint, resource consumption, University EF
Digital divide is a global social issue that deals with the inequality of availability, access, and utilization of Information and Communications Technology (ICT). This study investigated the incidence of the digital divide and its factors among the residents in a rural community in the Philippines. A survey based on the concepts of measurement of Digital Divide on a micro level was conducted to identify factors based on ICT Development Index (IDI), Digital Access Index (DAI), and Digital Opportunity Index (DOI). It was found that majority of the respondents were “non-users” of ICT due to lack of knowledge, access, and comfort in doing so. Therefore, a digital divide exists and the factors that cause the gap are age, employment status, educational attainment, and household income.
Keywords: digital divide, internet access, rural area, information and communications technology
Ferrocement is usually made from a mortar of Portland cement, sand, and fine gravel apply to steel reinforcement which is provided in small aperture wire mesh and/ or closely spaced small diameter bars or wires. This study aimed to determine the third-point load effect on bending moment of slotted ferrocement beams. It was conducted using a single-factor experiment with six levels of factors being employed. The experiments used five treatments with six replications will lead to an increase in the flexural strength of the section and increase the number of layers of wire mesh reinforcement could allow the beam to exhibit ductile behavior. The number of cracks in the beam will increase, and the distance of such spacing will decrease. This behavior of cracking can effectively delay the occurrence of a failure in the specimen.
Keywords: slotted ferrocement beam, modulus of rupture, third-point loading
Activities and rainfall events at Kibalagon Creek catchment basin contribute to flooding problems at CMU. The study characterized the physical characteristics of the basin to serve as input in policy formulation of campus flooding problems. One year data collection included profile leveling, water flow measurements, soil and water sampling, and rainfall data collection. The basin is 464.3 hectares with 9.91-kilometer perimeter and thematic maps on a slope, elevation, and soil was made. Kibalagon Creek has a total length of 8.61 kilometers with 12 streams and drainage density of 18.55 m/ha. Total suspended solid did not meet the minimum for agricultural purpose while pH and Total dissolved solid qualified.
Keywords: catchment basin, characterization, physical