Communities in DSpace
Select a community to browse its collections.
- Publications by researchers, faculty members, staff, and students of DMMMSU.
- A "lakasa" (storage) for the information materials related to La Union, Ilokano, and Iloko.
- «
- 1 (current)
- 2
- 3
- »
Recent Submissions
Design and performance evaluation of a household level Rice hull gasifier stove
(Don Mariano Marcos Memorial State University - North La Union Campus, 2012-03) Gañola, Paul James C.; Oler, Marvin T.
This study was conducted to design and fabricate a rice hull gasifier stove. The fabrication was done at the Agricultural Engineering Department, College of Agricultural Sciences, Don Mariano Marcos Memorial State University, Bacnotan, La Union. The machine was constructed from February to March 2012, and testing was done immediately after its construction in the Agricultural Engineering Department.
The stove has the following parts: a.) feeding/fuel hopper, b) reactor, c) blower/fan, d) grate, e) connector, f) gas duct, g) gas burner, h) pot support, i) support leg, and j.) char chamber.
Results revealed that the fastest ignition of fuel could be done in just a 44.53 second using 3 to 5 pieces of burning paper. Quick generation of combustible gases was obtained at full loading of fuel with a mean of 67 seconds. Fuel is easily burnt and exhausted at full loading with a minimum mean of 18.85 minutes. A liter of water boiled at a mean of 12.03 minutes while 2 liters of water boiled at a mean of 22.09 minutes.
Assessment of existing Flat bed dryers in the First District of La Union
(Don Mariano Marcos Memorial State University - North La Union Campus, 2012-03) Dal-uyen, Delilah P.
The study was conducted from October 27, 2011 to December 10, 2011 to assess the status of existing flat bed dryers in the first district of La Union. Specially, this study aimed to determine the following: (1) demographic profile of the flat bed dryer operators and the end users; (2) status of the existing flat bed dryer (FBD); (3) the level of satisfaction of the respondents on the effect of the technology; (4) the performance of the flat bed dryer; and (5) the level of seriousness of the problems met in the operation of the flat bed dryers.
The descriptive method was used in the study and t-Test: Two-Sample Assuming Equal Variances used in the analysis of data. Respondents were 9 operators and 40 beneficiaries or end-users from the first district of La Union. The data were gathered through the use of questionnaires supplemented with personal interviews or face-to-face interviews and observations to ensure accurate response and minimize bias.
The result of this study revealed that majority of the respondents were males, married, belonged to the age bracket 51-55 years, undergraduate of high school, have been farming for 16-20 years, earned a monthly income of Php 5, 000 and below and with a total rice farm area of 5, 000 sq m and below.
Existing flat bed dryer was already within two years and below in operation, in good working condition and no repair has been done since installation.
Respondents were very highly satisfied that the flat bed dryer entails lesser expenses and losses compared to sun drying; and that the FBD was easy to construct and control pollution, and easy to maintain.
All the respondents used diesel as the fuel in the prime mover engine, consumed 7-9 liters of diesel, 16-18 sacks of rice hull consumption for the fuel feed system, with a drying capacity of 101-500 kg/hr, the respondents paid cash for the drying fee.
Respondents met no serious problems on the construction of the flat bed dryer that the FBD failed due to faulty/improper operation, leakage of the engine, and clogging of the carbonized rice hull.
Water saving technologies as Climate change adaption practices in the selected Municipalities of the Province of Ilocos Sur
(Don Mariano Marcos Memorial State University - North La Union Campus, 2012-03) Antonio, Mary Jane A.
The study was conducted from September 21, 2011 to December 17, 2011 to assess the existing water saving technologies as climate change adaptation practices in the selected municipalities of the province of Ilocos Sur, namely: Suyo, Tagudin, Santa Cruz, Santa Lucia and Candon City. The study aimed to: (1) determinethe demographic profile of the respondent in terms of gender, age, civil status, educational attainment, number of years in farming, monthly income, farm size and major crops planted; (2) determine the respondent’s awareness and knowledge of climate change; (3) identify and describe the water saving technologies/ practices adopted by the respondents in terms of classification of the water saving technology/ practice and number of years of adoption; (4) determine the level of adoption of the
identified water saving technologies/ practices; and (5) determine the level of seriousness of the problems encountered by the respondents when climate changes.
The descriptive method of research was used in the study. There werea total of 625 respondents, composed of farmers, fisherfolks, households, government employees, and private/non-government employees. The data were gathered through the use of questionnaires supplemented with personal interviews.
Majority of the water saving technology/ practice adopters were males (62.56 percent), married (67.37 percent), and more than one fourth (25.92) of them belonged to the age bracket of 26-35 years old. Most of them were highschool graduates (21.6 percent), and not engaged in farm activities (40.8 percent). Some (14.08 percent) worked in the farm for more than 21 years and had an income of Php
5,000 and below. The farm size is as follows: 3, 001- 5, 000 sq m (21.12 percent); 3,000 sq mand below (18.88 percent); 5, 001- 10, 000 sq m (18.72 percent); and 10, 001- 20, 000 sq. m. (.48 percent). There were those who do not own land/farm (40.8 percent). There were those who planted rice (53.28 percent), maize/corn (42.56 percent), legumes (33.76 percent), vegetables (29.12 percent), tobacco (28.48 percent), root crops (13.76 percent), and hybrid varieties like rice and vegetables (13.6 and 2.56 percent, respectively).
Among the 625 respondents interviewed, 77.6 percent used television, followed by newspaper/ magazines, radio and attend seminars with a percentage of 66.56, 64.64, and 34.24, respectively as sources of information about climate change.
The respondents were highly knowledgeable and aware of the topics under climate change which indicated an overall mean 80.49 percent.
Water saving technologies/practices adopted by the respondents were the following: water reuse and recycling, shallow tube well, controlled irrigation system, adjusting plant dates to effectively adapt to the changing season, use and collection of rain, use of more heat/ drought tolerant crop varieties, enhance the capacity to adapt through skills training, workshops, and research, use of more submergence tolerant crop varieties, alter application of fertilizer, alter application of insecticide/pesticide, groundwater development, water metering in demand hot spots, invest in infrastructure for the containment, storage and transport of water and new or enhanced reservoirs, posting an overall mean of 2.20 indicating that those water saving technologies/practices were fairly adopted.
Result also showed that the respondents encountered problems when climate changes which they rated highly serious.
Design, construction, and performance evaluation of a Bee Pollen Drying machine
(Don Mariano Marcos Memorial State University - North La Union Campus, 2010-03) Vidad, Sheraldine B.; Orodio, Rommel O.
This study was conducted to design, construct and test the performance of a bee pollen drying machine in terms of its capacity and efficiency.
The design of the bee pollen drying machine is directed toward the realization of a mechanical air dryer that would meet the drying requirement for bee pollen. The design was prepared at the Agricultural Engineering Department. The device was constructed at the AIRSTREAM Trading and Electro Mechanical System Corporation, located at Annex 37 Better Living Subdivision, Paranaque City, Metro Manila from November, 2009 to January, 2010. It was tested at the crop processing center of the Agricultural Engineering Department on February 13 and 14, 2010.
The principal parts of the device are the following; heater, fan, dual function temperature / humidity controller, dumper, stoppering, fiber glass, and wheels.
The total cost of the machine is forty six thousand five hundred nine pesos and ninety two centavos (P46,509.92).
The drying temperature treatments were used as follows:
T1 = 35oC of 4 drying trays
T2 = 40oC of 4 drying trays
T3 = 45oC of 4 drying trays
Analysis of variance using ANOVA was used to determine the significant difference between treatments. Tukey’s method was used to further test the significance.
Analysis of variance showed highly significant difference between treatments on the rate of moisture reduction per hour, and the 35oC treatment resulted highly significant and thus efficiency as far as quality of dried products is concerned. The 35oC treatment revealed the most efficient and desirable color, texture, and aroma of dried bee pollen.
Analysis of variance on the quality of products revealed highly significant difference. This finding showed that maintaining a temperature of 35oC to 40oC of drying bee pollen will result to a favorable and desirable dried product.
Drying characteristics of Red Seaweed (Eucheuma strata ata) at varying levels of temperature
(Don Mariano Marcos Memorial State University - North La Union Campus, 2010-03) Sung-ag, Divina S.
The study with the general objective to find the optimum level of temperature for drying eucheuma was conducted at the Processing Center of the Agricultural Engineering Department, DMMMSU-NLUC, Bacnotan, La Union. Specifically, the following were determined: 1) drying characteristics of dried eucheuma before, during and after drying and, 2) level of temperature that can maintain the color characteristics of dried eucheuma. The eucheuma samples were dried using the multi-purpose dryer during the period of July 01, 2010 to August 17, 2010. Three sizes of eucheuma: shredded, chopped and
whole sizes were subjected to different levels of temperature (65°C-105°C). The same sizes were dried under the sun for 180 minutes.
The data gathered included weight before and after drying and the color differences between drying intervals were statistically analyzed using RCBD factorial.
It was observed that as the drying time increased, the weight reduction decreased. Sundrying consistently had the highest weight which was significantly different from the other treatments in all duration of drying. Drying eucheuma at 65°C and 75°C for 120 minutes obtained the same dried weight at 150 minutes and 180 minutes.
On the other hand, drying eucheuma at 85°C and 95°C obtained comparable dry weight at 90 minutes, 120 minutes, 150 minutes and 180 minutes. Eucheuma dried at 105°C obtained comparable dry weight at 60 minutes, 90 minutes, 120 minutes, 150 minutes and 180 minutes.
Shredded Eucheuma had the highest dried weight which was significantly different if dried in chopped or whole forms in all durations of drying. Furthermore, the weight decreased as the duration of drying increased in all forms.
Drying eucheuma at 105°C obtained the highest rating of 3.95 in terms of color with descriptive equivalent of high that was comparable to the color of drying eucheumaat 85°C. Sundrying eucheuma had the lowest rating.