Rancang Bangun Rangka dan Pipa Pemanas Pada Mesin Pengering Padi

2021 ◽  
Vol 1 (1) ◽  
pp. 28-32
Author(s):  
Rizky Dwi Saputro ◽  
Bayu Aji Girawan ◽  
Joko Setia Pribadi ◽  
Fadillah Fadillah ◽  
Mardiyana Mardiyana
Keyword(s):  
Climate Change ◽  
Design Process ◽  
Rainy Season ◽  
New Technology ◽  
Test Results ◽  
Drying Process ◽  
Rice Grains ◽  
Heating Pipes ◽  
Rice Drying ◽  
Main Components

The climate change in Indonesia results in disruption of the rice drying process which only relies on sunlight for the drying process of rice grains so that during the rainy season farmers having problems on the process of drying rice grains. Thus, a new technology is needed in the process of drying rice grains. This technology is using a rice dryer. In the process of making a rice drying machine, there are several important components that must be designed properly, namely the frame and heating pipes which are the main components of a rice drying machine. The aim of this research was to design the frame and heating pipe for rice drying machines. From the design process, the testing phase is carried out, both machine testing and rice drying testing. The test results show that all machine components run well and the drying results show that the rice has decreased in weight after being put into the rice dryer with  decrease is 5 kg to 4,9 kg or about 0,1%.

scholarly journals PEMBUATAN ALAT BANTU PELEPAS PIN SWING LINK PADA BOLSTER BOGIE KERETA API

2020 ◽  
Vol 19 (3) ◽  
pp. 195-204
Author(s):  
Adhitya Bagas Pratama ◽  
Fadli Rozaq ◽  
Surjanto .
Keyword(s):  
Design Process ◽  
Test Results ◽  
Passenger Safety ◽  
Main Components

Abstract Train bogie is one of the main components related to passenger safety and comfort that require maintenance. One component of bogie that must be treated is a bolster. In this bolster, there is an important component called the swing link pin that must be removed when starting disassembly. The purpose of this study is to build a swing link pin release tool more effective and more efficient compared to existing tools. The design process of this tool uses the Solidworks 2017 software. The test results show that the pin release tool produced from this study can release the pin faster than the existing tools. Keywords: bogie, train, bolster, swing link, pin release tool  Abstrak Bogie kereta api merupakan salah satu komponen utama yang terkait keselamatan dan kenyamanan penumpang sehingga membutuhkan perawatan. Salah satu komponen bogie yang harus dirawat adalah bolster. Pada bolster ini terdapat komponen penting bernama pin swing link yang harus dilepas pada saat memulai pembongkaran. Tujuan penelitian ini adalah  untuk membuat alat bantu pelepas pin swing link yang lebih efektif dan lebih efisien dibandingkan dengan alat yang sudah ada. Proses desain alat bantu ini menggunakan aplikasi Solidworks 2017. Hasil pengujian menunjukkan bahwa alat bantu pelepas pin yang dihasilkan dari studi ini dapat melepas pin lebih cepat dibandingkan dengan alat yang sudah ada. Kata-kata kunci: bogie, kereta api, bolster, swing link, alat bantu pelepas pin

scholarly journals Energy and Exergy Analyses of Rice Drying in a Novel Electric Stationary Bed Grain-Drying System with Internal Circulation of the Drying Medium

Foods ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 101
Author(s):  
Guiying Wang ◽  
Wenfu Wu ◽  
Daping Fu ◽  
Wen Xu ◽  
Yan Xu ◽  
...  
Keyword(s):  
New Technology ◽  
Drying Process ◽  
Internal Circulation ◽  
Medium Temperature ◽  
Grain Drying ◽  
Energy And Exergy ◽  
Optimization And Control ◽  
Rice Drying ◽  
Pollutant Discharge ◽  
And Control

In our study, we developed a system to reduce both energy consumption and pollutant discharge during the drying process. We present a new technology, a stationary bed grain-drying test device based on the internal circulation of the drying medium (ICODM). A rice-drying experiment was carried out inside of it, and the influences of air temperature (AT) and air velocity (AV) on the energy and exergy efficiencies (EEE) as well as the improvement potential rate (IPR) and the sustainability index (SI) of the rice-drying process were studied. The following conclusions were obtained: when the rice was dried at a temperature of below 55 °C and an AV across the grain layer of 0.5 m/s, the average EEE during the drying process was 48.27–72.17% and 40.27–71.07%, respectively, demonstrating an increasing trend as the drying medium temperature increased. When the rice was dried using an AV across the grain layer in the range of 0.33–0.5 m/s and a temperature of 40 °C, the two values were 39.79–73.9% and 49.66–71.04%, respectively, demonstrating a decreasing trend as the drying medium flow velocity increased. IPR and SI were 4.1–8.5 J/s and 1.9–2.7, respectively, at a drying temperature of 30–55 °C and an AV of 0.33–0.5 m/s. These conclusions can provide helpful guidance for the optimization and control of the rice-drying process in terms of saving energy.

The Development Of Society Businesses In Concrete Blocks Production With A Single Vibration System In The Pare Sub-District Kediri Regency

2020 ◽  
Vol 1 (1) ◽  
pp. 19-23
Author(s):  
Diah Willis L ◽  
Thomas Priyasmanu ◽  
Wahyu Panji A ◽  
D. H. Praswanto ◽  
E. Y. Setyawan
Keyword(s):  
Community Service ◽  
Production Cost ◽  
Building Construction ◽  
Vibration System ◽  
Current Development ◽  
Drying Process ◽  
Long Time ◽  
Concrete Blocks ◽  
Good Potential ◽  
Main Components

Development in the current development sector has grown rapidly, in this development we can see a good potential to be developed, namely the development of bricks with good quality compared to using red bricks which production takes a long time. Batako is an alternative that can be used in the construction of a building, because currently the price of red brick is quite high because the production cost is quite expensive. Besides, the price of firewood used for cooking red brick is getting difficult. Meanwhile, the demand for brick gradually increased because brick was one of the main components in building construction. So it needs to be developed in making brick blocks because the time is relatively short in the drying process. Therefore the community service team made a brick making machine with a vibration system for compaction and a faster production process in brick making using a machine that has been made, so that it can increase partner income, who previously produced 120 pieces with a manual system using a machine that could produce 500 pieces of brick per day.

scholarly journals Impact of Climate and Land Use/Land Cover Change on the Water Resources of a Tropical Inland Valley Catchment in Uganda, East Africa

Climate ◽  
2020 ◽  
Vol 8 (7) ◽  
pp. 83
Author(s):  
Geofrey Gabiri ◽  
Bernd Diekkrüger ◽  
Kristian Näschen ◽  
Constanze Leemhuis ◽  
Roderick van der Linden ◽  
...  
Keyword(s):  
Climate Change ◽  
Land Use ◽  
Water Resources ◽  
Land Cover ◽  
Rainy Season ◽  
Hydrological Processes ◽  
Land Use Land Cover ◽  
Lulc Change ◽  
Inland Valley ◽  
Headwater Catchment

The impact of climate and land use/land cover (LULC) change continues to threaten water resources availability for the agriculturally used inland valley wetlands and their catchments in East Africa. This study assessed climate and LULC change impacts on the hydrological processes of a tropical headwater inland valley catchment in Uganda. The hydrological model Soil and Water Assessment Tool (SWAT) was applied to analyze climate and LULC change impacts on the hydrological processes. An ensemble of six regional climate models (RCMs) from the Coordinated Regional Downscaling Experiment for two Representative Concentration Pathways (RCPs), RCP4.5 and RCP8.5, were used for climate change assessment for historical (1976–2005) and future climate (2021–2050). Four LULC scenarios defined as exploitation, total conservation, slope conservation, and protection of headwater catchment were considered. The results indicate an increase in precipitation by 7.4% and 21.8% of the annual averages in the future under RCP4.5 and RCP8.5, respectively. Future wet conditions are more pronounced in the short rainy season than in the long rainy season. Flooding intensity is likely to increase during the rainy season with low flows more pronounced in the dry season. Increases in future annual averages of water yield (29.0% and 42.7% under RCP4.5 and RCP8.5, respectively) and surface runoff (37.6% and 51.8% under RCP4.5 and RCP8.5, respectively) relative to the historical simulations are projected. LULC and climate change individually will cause changes in the inland valley hydrological processes, but more pronounced changes are expected if the drivers are combined, although LULC changes will have a dominant influence. Adoption of total conservation, slope conservation and protection of headwater catchment LULC scenarios will significantly reduce climate change impacts on water resources in the inland valley. Thus, if sustainable climate-smart management practices are adopted, the availability of water resources for human consumption and agricultural production will increase.

scholarly journals Design and Build a Multilevel Mace Nutmeg Dryer to Improve the People's Economy

SinkrOn ◽  
2021 ◽  
Vol 6 (1) ◽  
pp. 107-112
Author(s):  
Ihsan Ihsan ◽  
Dirja Nur Ilham ◽  
Reza Ade Putra ◽  
Rudi Arif Candra ◽  
Arie Budiansyah
Keyword(s):  
Software Design ◽  
Economic Value ◽  
Research Work ◽  
Test Results ◽  
Drying Process ◽  
Wet Season ◽  
Drying Time ◽  
Agricultural Community ◽  
Design Software

Nutmeg is a source of income for some people in South Aceh, and some types of nutmeg, like mace nutmeg, are of better quality. Mace nutmeg is also an agricultural community with great economic value and benefits for humans, as it can be processed into spices and herbs. A range of products includes nutmeg oil and medicines. The harvesting and drying of mace nutmeg, which is still considered a problem by nutmeg growers, cannot be isolated from the processing of the basic ingredients. The natural process of drying mace nutmeg involves the use of sunshine, which necessitates a considerable drying time. Therefore nutmeg farmers frequently complain of erratic weather, especially during the wet season. The constant rain can cause the mace to rot, causing the nutmeg farming community's revenue to become unstable. Methods and steps of research work starting from the study of literature, determination of design specifications, hardware design, software design, toolmaking, tool testing.Good results were reached with the dryness of the mace nutmeg, which can be adjusted, and without putting into account the weather in the drying process, which is usually done with the heat of the sun, per the results of the testing of the designed tools.The average dryness of mace nutmeg is at a temperature of 45 percent with a time of 4 hours and a capacity of 100 grams; according to the test results of the automatic mace drying machine, it produces 50 grams of dry mace.  

scholarly journals Penerapan IPTEKS pada usaha Handycraft Ketak berorientasi Ekspor di desa Karang Bayan Kecamatan Lingsar Kabupaten Lombok Barat

2017 ◽  
Vol 7 (2) ◽  
Author(s):  
A.A.A. Triadi ◽  
M. Nuarsa ◽  
DG. Bisma
Keyword(s):  
Natural Products ◽  
Rainy Season ◽  
Raw Materials ◽  
Business Management ◽  
Export Market ◽  
Heat Sources ◽  
Drying Process ◽  
Japanese Market ◽  
Transfer Training ◽  
The Village

Products Woven or ketak is a handicraft product produced by the ‘artisans’ community in the village of Karang Bayan West Lombok with raw materials from plants ketak. In the process it takes the necessary skills to weave and combine woven ketak with other natural products such as wood, pottery, coconut shell or bone. The marketing of wicker web products has penetrated the export market, especially the Japanese market. Problems experienced by industrial partners or the artisan’s community is the transfer of design from businessmen to crafters (door to door), drying process during the rainy season and business management. Designs are sometimes made by the buyer and sent to the entrepreneur via email. The solving problem that is faced by the producents is the important thing to be done, by approaching the centralized design transfer training (in one place that is done in the partner house).  The next one, making a mechanical dryer with two heat sources located beside left and lower right and LPG-fueled (clean, practical, economical and environmentally friendly). Next step, by providing business management assistance (finance and marketing).

scholarly journals Reconstruction of Rice Drying Model and Analysis of Tempering Characteristics Based on Drying Accumulated Temperature

2021 ◽  
Vol 11 (23) ◽  
pp. 11113
Author(s):  
Yi Jin ◽  
Jun Yin ◽  
Huihuang Xie ◽  
Zhongjie Zhang
Keyword(s):  
Moisture Ratio ◽  
Drying Process ◽  
Hot Air Drying ◽  
Exponential Relationship ◽  
Transfer Processes ◽  
Data Comparison ◽  
Hot Air ◽  
Accumulated Temperature ◽  
Mass And Heat Transfer ◽  
Rice Drying

Previous research has shown that the accumulated temperature can describe drying processes as well as crop growth. To describe the mass and heat transfer processes in the rice drying process more accurately, a mathematical model of rice drying was proposed based on the drying accumulated temperature, and the optimal tempering ratio for conventional hot air drying was obtained through data comparison and analysis. First, it was proven that there was an exponential relationship between the moisture ratio and the drying accumulated temperature of rice. Second, by comparing and analyzing the fitting results of seven different drying mathematical models, the model with the highest fitting degree was selected and reconstructed to obtain the drying accumulated temperature–moisture ratio model. Finally, the new model was used to fit the results of two drying experiments without and with tempering, and the tempering characteristics of rice drying were proved by comparing and analyzing the coefficient difference between the two models. The results showed that the optimal tempering ratio was 3. This study thus provides a reference for rice drying process parameters.

scholarly journals Mathematical literacy as an important component of preparing a future teacher

2021 ◽  
Vol 27 (2) ◽  
pp. 149-153
Author(s):  
Natalia Lvovna Margolina ◽  
Irina Vladimirovna Nalimova
Keyword(s):  
Modern Society ◽  
State University ◽  
Test Results ◽  
Mathematical Literacy ◽  
Mathematical Concepts ◽  
Professional Activities ◽  
Teaching Aids ◽  
Points Of View ◽  
Main Components ◽  
First Time

The article analyzes the concept of mathematical literacy. The formation of mathematical literacy among members of modern society is a fundamental basis for the formation of functional literacy. Currently, there is no single approach to the interpretation of the concept of "mathematical literacy", the article provides several different approaches to the definition. Based on the analysis of the points of view of different scientists, the authors of the article highlight the main components of the concept of "mathematical literacy". These include: literacy of mathematical speech; possession of mathematical concepts; the ability to correctly formulate definitions and statements; the ability to apply mathematics to research. The paper provides a characteristic of the listed components of mathematical literacy. In addition, in this work, for the first time, an attempt was made to formulate the levels of mathematical literacy – speech, terminological, critical and operational. The article presents the results of testing students in pedagogic areas of training of two universities – Kostroma State University and Yaroslavl State Pedagogic University. The test was aimed at assessing the level of mathematical literacy of future teachers, for whom teaching mathematics will be a part of their professional activities. The test tested not only the knowledge of terms and the ability to give definitions, but also the ability to correctly apply mathematics to solve practical problems with subsequent interpretation, as well as the ability to see errors and inaccuracies in the texts of students' works, Internet sources and teaching aids. The authors identified criteria for assessing the test results and for each criterion; a quantitative indicator was determined equal to the number of correctly completed tasks. The low results of even third-year students show topicality of specific activities that could help improve the mathematical literacy of pedagogues.

scholarly journals Study of climate change effect on water balance in upper Citarum Watershed, the Krueng Cunda Watershed, and the Woske Watershed, Indonesia

2021 ◽  
Vol 930 (1) ◽  
pp. 012074
Author(s):  
A Chalid ◽  
A Mulyadi
Keyword(s):  
Climate Change ◽  
Water Balance ◽  
Water Availability ◽  
Rainy Season ◽  
Water Reservoirs ◽  
Change Effect ◽  
Climate Change Effect

Abstract The community feels the changes in water availability due to climate change will directly impact water availability, especially water availability in rivers, reservoirs and other water reservoirs. The purpose of this analysis is to determine changes in the rainy season shift, changes in mainstay discharge, and the effect of climate change on water balance. The results show a shift in the rainy season and a significant decrease in rainfall during the last ten years. In the Upper Citarum watershed (UCW), there is a change in the maximum and minimum mainstay discharge in the three watersheds. Climate change significantly affects the water balance in a watershed. Meanwhile, in the Krueng Cunda watershed (KCW) and the Woske watersheds (WW), there was a decrease in the value of the water balance, which was the same as the UCW. However, still able to meet the water needs of the population. There was a decrease in the value of the water balance, which was the same as the UCW, but still able to meet the population’s water needs.

scholarly journals Factor Influencing Adaptation Choices Employed by Farmers Against Climate Change to Improve Rice Yield in Bugarama Wetland in Rwanda

2020 ◽  
Vol 2 (1) ◽  
pp. 12-22
Author(s):  
Esther Nyirandorimana ◽  
Ezekiel Ndunda ◽  
John Muriuki
Keyword(s):  
Climate Change ◽  
Rice Yield ◽  
New Technology ◽  
Climatic Conditions ◽  
Descriptive Research ◽  
Changing Climate ◽  
Step Model ◽  
Rice Yields ◽  
Market Distance ◽  
Adaptation Method

The changing climate poses a great challenge to many wetlands productivity worldwide. Rice production in wetlands is a major source of livelihood in developing countries such as Rwanda. This study aimed at determining the factors influencing adaptation methods when farmers perceive the changing climate at Bugarama Wetland Rice Scheme in Rwanda. A descriptive research design was used by this study, whereby quantitative and qualitative data was collected. The analysis was based on data collected from 300 selected farmers using systematic random sampling method. We employed descriptive statistics to assess how farmers perceive the effects of climate change and descriptively measured the new adaptation methods used by farmers in Bugarama to increase their yields. The study adopted Heckman two-step model to determine factors that influence adaptation choices, this analysis procedurally required farmers’ knowledge of perception that makes them respond to the effects of changes in climatic conditions by the use of new adaptation methods. The results deduced that level of education (p =0.019), extension access (p=0.001), market distance (p=0.002) and rice income (p < 0.001) had a probability of influencing farmers perceptions about climate change thus need to adapt. Based on the outcome model, results showed that extension access (p < 0.001), household size (p= 0.098), market distance (p= 0.047), rice income (p =0.032), farmers-to-farmers contact (p < 0.001) and effects of climate change on rice (p=0.038) had a greater probability of influencing farmers choice of adaptation method used to improve rice yields. To conclude, the study found that access to informational facilities and rice income, influenced farmers’ perceptions while extension access, rice income, market distance, farmers-to-farmers contact and effects of climate change on rice yield strongly had a probability of determining farmers’ choice of adaptation. This study recommends that the Rwandan government and local administrators need to develop a strategy that would allow farmers to access information facilities about new technology so as to adapt to the effects of climate change thus improve their rice yields.

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