Analysis of Erosion Level Using Map Windows Agricultural Non-point Source Pollution (MWAGNPS) on Jeneberang Sub-watershed South Sulawesi Province

The aims of this study was to obtain information about the level of soil erosion in Jeneberang sub watershed, as well as the impact of land management and information to determine the direction of land management in the watershed. The approach model used is MWAGNPS. MWAGNPS Model is a model of cell-based rainfall events with the main components are topographic maps, land use and soil type. This model is able to determine the source of erosion and the erosion that occurs. Simulation model showed when Jeneberang watershed has 31.66 mm of rain events with 30-minute rainfall intensity (EI30) can caused erosion 44.81 tons / ha and the sedimentation rate is 2,22 tons / ha. The source of erosion in Jeneberang sub watershed from farm/moor caused erosion is 29552.14 tons / ha and a total of 4,562,625.84 tons of sediment

The Effect of Rainfall Intensity on Soil Erosion and Runoff for Latosol Soil in Indonesia

Soil erosion is the most serious problem of land degradation in Indonesia. However, limited report has been documented. The erosion problem in Indonesia, particularly in Java, has been at an alarming rate. The fundamental 1 case of soil erosion is the rain effect upon the soil. Rainfall intensity and soil characteristics are related to soil erosion and runoff The objective of this research was to study the relationship of rainfall intensity, soil erosion and runoff in latosol soil. An experiment was conducted using plot size 22 m in length and 2 m in width and 9 % slope. A field experiment was conducted with rainfall intensity observation for 3 months, to collect soil erosion and runoff in the soil collector. A laboratory experiment was done using rainfall simulator instruments with rainfall intensity of 2.3, 3.4, 4.5, 5.6 cm/hr and 8 % slope each with 3 replications. The result of the experiments showed that soil erosion was 3. J 4 t/ha and runoff was 33.20 m3/ha. When the rainfall size increased the soil erosion and runoff also increased. The correlation coefficient between £130 (Interaction 130 and energy) and soil erosion was positive

Sistem Kontrol Hidrolik Berbasis Arduino Pada Guide Vane Turbin Kaplan

Kaplan turbine lab tools used student ofl Energy Convered Engineering and Power Plant Engineering Polytechnic of Jakarta are still using manual controls. Screw serves to adjust the guide vane (blade set) on the side of the water entering the turbine to run into obstacles, due to the lack of maintenance and age of equipment that has exceeded 30 years led to declining performance kaplan turbine.The purpose of this study design is to create a hydraulic system using a controller that is arduino, guide vane settings can be performed automatically. Automatically to this , if the declining controllers generator then took command of guide vane to enlarge openings guide vane , including if the excess controllers generator then took command of guide vane to reduce openings guide vane .In research wake up this engineering an output voltage of any value point lvdt set as a signal the response to a cylinder hydraulic mover to arrange guide vane .Arduino can be programmed to set a value set point in lvdt.arduino can be programmed to read the pace lap ( rpm air- ) turbine generators with using proximity sensor

DAMPAK LONGSORAN KALDERA TERHADAP TINGKAT SEDIMENTASI DI WADUK BILI-BILI PROVINSI SULAWESI SELATAN

ABSTRACTThis research aimed to study impact of caldera landslide at Jeneberang sub watershed to sedimentation rates in the Bili-Bili dam. The research was conducted based on field survey, caldera landslide at upstream and sedimentation rate in the Bili-Bili dam. The Result Showed that Jeneberang sub watershed dominated by steep areas topography is 10.080 ha (26.22%) and the closure of forested land is 12.250 ha (31.87%). Caldera landslide in 2004 caused sediment flow from upstream of Jeneberang watershed was 45,027,954 m3. Sabo dam as a sediment control along the Jeneberang upstream has function effectively. It was seen from the volume flow of sediment that can be controlled up to the year 2008 is 1,915,671 m3. Sedimentation rate before the event of landslide caldera, sediment deposited in Bili-Bili dam cumulatively is 8.376 million m3 (April 2001). Five years after the landslide sediment volume has reached 60.959 million m3 in 2008. Based on Trap efficiency showed that efficiency of Bili-Bili dam was decrease from 90.81% in 1997 to 73.34% in 2005, and then increased in 2007 (92.57%) and in 2008 decrease become 89.79%

Evaluasi Aliran Permukaan, Erosi dan Sedimentasi di Sub DAS Cisadane Hulu dengan Menggunakan Model Agnps (Agricultural Non Point Source Pollution Model)

Composition of a good watershed management planning needs accurate information about erosion, runoff and its quality, so that its model for them, middle term and long term goal can be projected. The model had been used is AGNPS (agricultural non point source pollution model) is developed by Robert A. Young, Charles A. Onstad, David D. Bosch. And Wayne P. Anderson in 1987. The Objective of this reseacrh is to looked for the effect of soil conservation had been done with rehabilitation activities plan to watershed condition using AGNPS model wich is divided into two plans. The effect of soil conservation activieties by a better plan wich is suited with Upper Cisadane Watershed could decreased runoff volume, runoff peak rate, annual erosion and sediment weight into 20% so that it could repaired the condition of Upper Cisadane Watershed wich is dangerouse before

Analysis of Erosion Level Using Map Windows Agricultural Non-point Source Pollution (MWAGNPS) on Jeneberang Sub-watershed South Sulawesi Province

The aims of this study was to obtain information about the level of soil erosion in Jeneberang sub watershed, as well as the impact of land management and information to determine the direction of land management in the watershed. The approach model used is MWAGNPS. MWAGNPS Model is a model of cell-based rainfall events with the main components are topographic maps, land use and soil type. This model is able to determine the source of erosion and the erosion that occurs. Simulation model showed when Jeneberang watershed has 31.66 mm of rain events with 30-minute rainfall intensity (EI30) can caused erosion 44.81 tons / ha and the sedimentation rate is 2,22 tons / ha. The source of erosion in Jeneberang sub watershed from farm/moor caused erosion is 29552.14 tons / ha and a total of 4,562,625.84 tons of sediment

Collaborative classroom action research for mathematics and science teachers in Indonesia

Abstract Based on government regulation, as a part of career advancement for teachers in Indonesia, they need to do a Classroom Action Research (CAR) to reach the next level professional career. Unfortunately, this policy leads to problems that many teachers who find difficulties in doing classroom action research prefer using sort cut by asking agency to help them provide a well written classroom action research report. This situation triggered many people to take benefit by providing service for creating fake classroom action research for teacher as part of requirement in achieving next level in their career. There are some obstacles for teachers in doing classroom action research: (1) lack of knowledge theory in classroom action research; (2) lack of skill in designing instruments for data collection process; (3) lack of skill in analyzing the data; (4) lack of skill in writing the research report; (5) complicated regulation for teachers in conducting dissemination of their research. A model of TPD need to be formulated to overcome those obstacles and help mathematics and science teachers doing CAR for solving problems in their classroom or improving learning process and learning outcomes. A design research with engineering research approach is adopted as methodology of the study for designing a TPD model. The participants of the study are mathematics science teachers, lecturers, and supervisors from 5 provinces in Indonesia: North Sumatera, Riau, Jambi, Central Java, and East Borneo. This paper aims to describe the process and the result of the teachers’ professional development program for elementary and junior high school science and mathematics teachers in Indonesia through collaboration classroom action research with lecturer and school supervisors as the answer of those obstacles.</jats:p