Institute of Research and Development: Recent submissions
Now showing items 61-80 of 847
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Immobilized free nitrogen-fixing bacteria azotobacter in natural materials and Its effect on growth of brassica chinensis in soil
(2022-04-23)Nitrogen is an essential nutrient for plant growth. When the plants have been grown for a long-term, effect to decreased nitrogen in soil and insufficiency of the plant growth. One biological method for increasing the ... -
Development of a model and forecasting of hourly uv index using artificial neural network (ANN) at Songkhla
(2022-04-23)In this work, solar erythemal ultraviolet radiation (EUV) which affects human skin and skin cancer was investigated at Songkhla province (7.2°N, 100.6°E). EUV was converted to UV index, then the data was used for model ... -
The Development of engine prototype powered by diesel and LPG as fuel for agriculture
(2022-04-23)According to the research entitled “the innovative engine prototype powered by diesel and LPG as fuel for agricultural” in 2019, the problems found while using the engine were as follows: the accumulated heat in the auxiliary ... -
Physicochemical, mechanical and thermal properties of edible film from man lueat (dioscorea alata) flour
(2022-04-23)Man Lueat (Dioscorea alata) flour is a biopolymer material that can be formed into an edible film. It can be contacted directly with food, consumed and naturally biodegraded. The aims of this research were to study the ... -
Bendability and damage mechanisms of aluminium sheet AA6016
(2022-04-23)Aluminium alloys was used in the automotive parts industry increased, for compensate steel parts material, due to its lightweight and good surface. Since, aluminium alloys are there relatively low mechanical properties, ... -
Determination of mercury contents in facial whitening cream samples by direct thermal decomposition mercury analyzer
(2022-04-23)Direct thermal decomposition mercury analysis is an efficient technique for determination of mercury in facial whitening creams. The analysis can be performed without any sample preparation. The samples can be weighed and ... -
Effect of dragging force on paper cone falling using high-speed video analysis technique
(2022-04-23)This research was aimed to study of the effect of dragging force on paper cone falling by using the high-speed video analysis technique. Four different sizes of paper cones, ranged from 3.00-5.70 centimeter were used. ... -
Analysis of wind speed data and annual energy potential at Samoeng district in Thailand
(2022-04-23)In this study, the wind speed characteristic and evaluation of wind power generation at Samoeng district, Chiang Mai were investigated using wind speed data and wind direction data, during time of January 2011 to December ... -
Flexural performance of corroded reinforced concrete beams repaired with CFRP sheets
(2022-04-23)Corrosion of steel reinforcements in concrete is one of the main causes of early deterioration and reduction of service loads of reinforced concrete (RC) structures. This paper reports the results of an experimental program ... -
The Factors causing an unfinished research project in time of Rajamangala University of Technology Phra Nakorn
(2021-09-15)ปัจจัยที่มีผลต่อการทำวิจัยไม่แล้วเสร็จตามระยะเวลาที่กำหนดของบุคลากร มหาวิทยาลัยเทคโนโลยี ราชมงคลพระนคร ผลการวิจัยพบว่า ปัจจัยที่มีผลต่อการทำวิจัยไม่แล้วเสร็จตามระยะเวลาที่กำหนดของ บุคลากร มหาวิทยาลัยเทคโนโลยีราชมงคลพระนคร ... -
A Study on influence of swirl angle of burner port on behavior of heat transfer to a vessel of high-pressure cooking stove by computational fluid dynamics
(2021-08-07)The objective of this research is to study the combustion characteristic of a low-pressure vertical port burner using computational fluid dynamics (CFD). The simulation model was created using Fluent 6.3 in 3D-model of the ... -
Simulation on combustion behavior of gas-saving burner s-10 by computational fluid dynamics
(2021-08-07)The objective of this research is to study the combustion behavior of a gas-saving burner S-10 using computational fluid dynamics (CFD). The simulation model was created using Fluent 6.3 in 3D-model of the same size of the ... -
Development of a biodegradable film from jicama starch (pachyrhizus erosus (L.) urbar) for plant bag application
(2021-08-07)This research aimed to study the production of a biodegradable film from Jicama starch (Pachyrhizus erosus (L.) Urbar) for plant bag application. The film was prepared by dissolving Jicama starch in water to the concentration ... -
Performance investigate of trilateral, subcritical and supercritical organic rankine cycle driven by geothermal heat source
(2021-08-07)This study investigates three different types of power plant include a trilateral cycle (TLC), subcritical organic Rankine cycle (ORC), and supercritical ORC power plant driven by geothermal heat source with mass flow rate ... -
Hot-melt adhesive production from natural rubber
(2021-08-07)The purpose of this research was to study hot-melt adhesives from natural rubber (Standard Thai Rubber 20, STR 20). In order to improve the adhesion and melting properties of hot-melt adhesive to get the best glue formula ... -
Effect and optimal variable of mangosteen peel powder for green sand mold
(2021-08-07)Metal casting with Green sand mold is essential for participation in the manufacturing industry that requires natural resources and chemicals as an element. This research studied the effects of the right mix of mangosteen ... -
Antioxidant activities of crateva adansonii DC .subsp. trifoliata (Roxb) jacobs
(2021-08-07)The aim of this research was determine total phenolic content, total flavonoid content and antioxidant activity by DPPH and ABTS assay from leaves, flower and stem of Crateva adansonii DC. subsp. trifoliate (Roxb) Jacobs ... -
Acidification processes of carving vegetable using acid conditioning machine under temperature and pressure control
(2021-08-07). This research aimed to study the acidification processes of carving vegetable using acid conditioning machine under emperature and pressure control which was developed in this study. Four acidification procedures were ... -
Development of seasoning powder and furikake-rice seasoning from fermented soy bean
(2021-08-07)This research aims to develop the new product from a northern local fermented soy bean which were seasoning powder and furikake-rice seasoning and analyze to observe the nutritional, chemical component and antioxidant of ... -
Substitution of wheat flour with hom nil rice flour affects physicochemical characteristics, antioxidant activities, and sensory acceptance of chinese steamed bread (mantou)
(2021-08-07)This study investigated the effects of partial replacement of wheat flours with Hom Nil rice flour on the physicochemical characteristics, antioxidant activities, and sensory acceptance of chinese steam bread (Mantou). ...