http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Detection of Addition of Corn Starch to Coffee Powder Based on Image Parameters
( Rudiati Evi Masithoh ),( Balza Achmad ) 한국농업기계학회 2018 한국농업기계학회 학술발표논문집 Vol.23 No.1
Pure coffee powder is expensive; therefore to reduce price, coffee adulteration is done by adding corn starch. Usually UV-VIS spectroscopy and HPLC analysis were used to detect adulteration components. In this research, image paramaters, i.e. color and texture, of coffee added with various concentration of corn starch (0%, 20%, 50%, and 80%) were used to determine coffee authentication. Results showed that neural network technique and principle component analysis (PCA) were able to determine coffee mixtured with corn starch.
( Andri Prima Nugroho ),( Lilik Sutiarso ),( Rudiati Evi Masithoh ),( Takashi Okayasu ) 한국농업기계학회 2018 한국농업기계학회 학술발표논문집 Vol.23 No.1
Circadian rhythm is a biological process that repeats according to environmental conditions and occurs due to the change of light and temperature. Plants are triggered by biological clocks to help adapt to dark and light changing times in accordance with the presence of light and environmental temperature conditions. The objective of this study was to develop an automatic plant monitoring system to measure the motion rhythmic in plant based on leaf motion. The proposed system allows continuous, high-resolution time-lapse imaging, independent of the presence of visible light, and based on the open-source platform. The system utilized an infrared (IR) camera positioned above and side of the plant as top view projection and side view projection respectively. As the motion tracking, the Optical Flow method was adopted, implementing the Lucas-Kanade technique combined with Shi-Tomasi corner detection. Optical flow is one of the motion detection methods to analyze the motion between two consecutive images by differentiating the constraint. Average of the displacement distance (V) was used as a parameter for representing the motion. As the result, the proposed system could be used to monitor the plant motion resembles the diurnal circadian rhythm. Further investigation of the rhythmic motion and its relation to environmental treatment will be in the future works.
Technical Adaptability Study of Korean-Made Agricultural Machinery in Indonesia
( Bambang Purwantana ),( Lilik Sutiarso ),( Radi ),( Andri Prima Nugroho ),( Sri Markumningsih ),( Rudiati Evi Masithoh ) 한국농업기계학회 2018 한국농업기계학회 학술발표논문집 Vol.23 No.1
The objective of this study was to test Korea-made tractors and combines in Indonesia to increase their local adaptability to Southeast Asian countries. The tractors are Kioti DK4510 (43HP) for paddy field and Kioti RX7620 (72HP) for sugarcane plantation. The combine harvester is Kioti DSF75GT (72HP). The tractors were tested to work into three types of soils (heavy, medium, and light) that represent the characteristics of paddy field and sugarcane plantation. The heavy soil was grumusol and latosol, the medium was Regosol, and the light was Latosol. The implements used for the performance test was local-made implement with some adjustment. The implements for paddy field were disc plow and rotary tiller, and for sugarcane plantation were disc plow and disc harrow. The tractors performance has been evaluated by the observation of the cooling performance, actual working speed, fuel consumption, and field capacity. Three repetitions of each variation were conducted. The combine was tested to harvest local paddy field in the past season. The field capacity, threshing performance, cooling performance, and easiness of the operation were observed to evaluate the combine performance. As the result, the plowing field capacity of RX7620 in heavy, medium, and light soil were 0.46 ha/hr, 0.34 ha/hr, and 0.34 ha/hr respectively. The field capacity for harrowing obtained 0.53 ha/hr, 0.47 ha/hr, and 0.58 Ha/hr. For the Combine harvester, the field capacity was 0.38 ha/hr. Small modification and adjustment of some components have been performed so as to fit the agro-technical aspect and operational requirement. Performance evaluation of the modified machines will be in our future works.