Intellectual Repository at Rajamangala University of Technology Phra Nakhon: Recent submissions
Now showing items 121-140 of 3612
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Engineering properties of porous concrete paving blocks from recycled asphalt pavement as coarse aggregate replacement
(2023-03-29)This research aimed to study the use of coarse aggregate obtained from removing old recycled asphalt pavement (RAP) in the production of the porous concrete paving block. Crushing and size separation of the coarse aggregate ... -
The Application of hard film coating for extension tool life on inclined punch in the trimming process
(2023-03-29)The objective of this research is to increase the tool life of trimming process by surface coating technology. The procedure of this research consists of two sections. In the first section, the friction coefficient was ... -
The Quality changes of coating salted eggs with turmeric to partially replace soil from termite mound during storage
(2023-03-28)This research aimed to study the quality changes of coating salted eggs partially replacing soil from termite mound with turmeric powder at the level of 0%, 5%, 15% and 25% during storage for 4 weeks. The results showed ... -
The Dietary effects on manure characteristics and biogas production from dairy cows feeding with pineapple peel
(2023-03-28)This study explored the dietary effect on manure characteristics and potential of biogas production from the manure of dairy cows feeding with pineapple peel as a roughage source. Three mid-lactation primiparous crossbred ... -
Effect of crude ethanol extracts from seven herbs on ant repellent
(2023-03-28)This research aims to study the ant repellent effects of the crude ethanolic extracts from 7 herbs; Piper nigrum Linn., Alpinia galanga (L.) Willd, Ocimum basilicum L., Cymbopogon citratus Stapf, Citrus aurantiifolia ... -
Strength and acid resistance of mortar made from alkali activated high calcium fly ash
(2023-03-28)The aim of this study is developed of alkali activated high calcium fly ash to use as cementitious material to replace Portland cement. The mixture of mortar made from fly ash and sodium hydroxide solution (NaOH) was used ... -
Formulation development of steamed buns by supplemented toddy palm pulp powder
(2023-03-28)The results of the using of toddy palm pulp powder form added to steamed buns using ratios of 0, 10, 20 and 30 %. It was found that from the sensory quality measurements of steamed buns by supplemented toddy palm pulp ... -
In vitro micropropagation and microrhizome induction of curcuma comosa roxb
(2023-03-28)This study was conducted to determine the effects of plant growth regulators on in vitro propagated plantlets and microrhizome inductions of Curcuma comosa Roxb. for an efficient development of plant regeneration. In vitro ... -
Investigation of the effect of harmonic currents on losses of phase shifting transformers and its realization using a 15-degree phase shifting transformer
(2023-03-28)The trend of energy savings has been widely interested and phase shift transformers (HMT) have been extensively used. This paper presents the investigation of the effect of harmonic currents on losses of the HMT. In this ... -
Simulation and experiment of a Solar-Circulating aeration system
(2023-03-28)The amount of dissolved oxygen (DO) in aquaculture ponds is considered to be one of the most important aspects for the survival of fishes. The water in aquaculture ponds is stratified into distinct layers with different ... -
Biogas production from agricultural residues using anaerobic dry fermentation system for households in the community of Koh Khan sub-district, Nakhon Si Thammarat province
(2023-03-28)This research was studied and transferred the biogas production technology with the community participation using anaerobic dry fermentation system from agricultural residues. The production of renewable energy for replacing ... -
Economic order-quantity determination for fuel demand: a case study of a freight forwarder
(2023-03-28)This research focuses on the raw-material management such as fuel of a case study company being a freight forwarder in Chonburi province. The objective is to determine the economic order quantity (EOQ) and the reorder point ... -
A Pattern design for run flat wheel suitable for small regular armored truck using finite element method
(2023-03-28)Run flat wheels for small armored regular trucks have been re-developed by transformation from the original metallic material to compound materials, polymer group materials as important raw materials, then added with ... -
Physical and aerodynamics properties of khao dawk mali 105 paddy rice
(2023-03-28)This research objective was to determine physical and aerodynamics properties of Khao Dawk Mali 105 paddy (Thai Jasmine paddy rice). The paddy sample in this test was prepared with different moisture contents in the range ... -
Moisture sorption isotherms of khao dawk mali 105 paddy
(2023-03-28)The objectives of this research were the determination of sorption isotherms and the comparison of mathematical models to determine a suitable model in different temperature ranges for Khao Dawk Mali 105. This experiment ... -
Factors affecting delay of construction projects
(2023-03-28)The research is aimed to 1) study the level and priority of the factors affecting the delay of construction projects and 2) provide suggestions in relation to the prevention of such delay. The sample is 520 people who were ... -
Isolation, classification and study of the influence of glow discharge plasma on dirty panicle rice fungal pathogens
(2023-03-28)This study was conducted to isolate and classify fungal dirty panicle disease pathogens from five rice varieties. Observation of rice seeds under stereo microscope showed that the seeds from all five varieties had 100% ... -
Finite element analysis of armor piercing bullet penetrating hard steel
(2023-03-28)The bulletproof plates with materials that can convincingly be destroyed by the 7.62 mm bullet with its speed at 878 ± 9.1 m/s were developed by designing according to the National Institute of Justice Level 4 (NIJ 4). The ... -
The study of optimum factors in gold plating process to enhance OTOP knife products for ban mai knife forgers village, Lom Sak district, Phetchabun
(2023-03-28)This research aimed to study the optimum factors affecting the quality of gold plating process to enhance OTOP knife products of Ban Mai knife forgers village. This study focused on application of AISI 5160 steel and the ... -
The Design of power harvester for passive RFID Tags
(2023-03-28)This paper presents the design of a power harvester for passive RFID Tags. An impedance matching circuit chooses a high-pass L network inserted between the antenna and rectifier circuit to maximize the power transferred ...