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INFORMASI DETEKSI SUMBERDAYA AIR TANAH ANTARA SUNGAI PROGO – SERANG, KABUPATEN KULON PROGO DENGAN METODE GEOLISTRIK Riyadi, Agung
JURNAL TEKNOLOGI LINGKUNGAN Vol 5, No 1 (2004): JURNAL TEKNOLOGI LINGKUNGAN
Publisher : Badan Pengkajian dan Penerapan Teknologi (BPPT)

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Abstract

The demand for groundwater in developing countries is continuously increasing. It is used as industrial processes, drinking, agriculture, fishpond and irrigation. The reasons for this growth include agriculture, industrial processes, expanding cities, food production needed irrigation areas that urgently need groundwater supply. Actually now, in south Kulon Progo coast area, many people development agriculture with water supply from groundwater. From the measurement in the field concerning groundwater resources potential in thesouth Kulon Progo coast area, can be predicted that the fresh water resources be found as far as coast from Serang River until Progo River, with average wide 1.6 km and thick between 20 – 43 meter and with depth average 25 meter.
IDENTIFIKASI POTENSI AIR TANAH DI KECAMATAN MANGKUBUMI TASIKMALAYA DENGAN METODE UJI POMPA Riyadi, Agung
JURNAL TEKNOLOGI LINGKUNGAN Vol 6, No 2 (2005): JURNAL TEKNOLOGI LINGKUNGAN
Publisher : Badan Pengkajian dan Penerapan Teknologi (BPPT)

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Abstract

Pumping tests are carried out to determine how much groundwater taken from a well and what effects pumping will have on the aquifer. Theis recovery method aims to find out the aquifer characteristics such as transmisibility and permeability values. This method in principle observes the recovery of ground water surface. This reasearch location at Mangkubumi distric Tasiklamaya West Java. The value of transmisibilitas and permeabilitas in Mangkubumi district indicated the groundwater potential is good. Ground water flow (m3/day) between 684,02 at Cipawitra until 4.617,19 at Cipari Tasikmalaya. Hidrolik Conductivity between 0.39 – 2.63 (m2/day).
KAJIAN KUALITAS PERAIRAN LAUT KOTA SEMARANG DAN KELAYAKANNYA UNTUK BUDIDAYA LAUT Riyadi, Agung
JURNAL TEKNOLOGI LINGKUNGAN Vol 6, No 3 (2005): JURNAL TEKNOLOGI LINGKUNGAN
Publisher : Badan Pengkajian dan Penerapan Teknologi (BPPT)

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Abstract

      Marine culture develoment at Semarang Central java coast is notincreased. Based on water quality, a good water quality conditions at line 3,beside far for human activities, the dissolved oxygen and turbidity level stillsuitable for marine culture activities. The dissolved oxygen value from 4.8 – 5mg/l. Comparing with the second station (line l and 2) dissolved oxygen (DO) israther low and turbidity level is very hight, turbidity value until 4 FTU. The method using digital device Chlorotech type AAQ 1183, Alecs Electronics for describing the characteristicsof tropical coastal hydrography and water quality.
KAJIAN STATUS WADUK TIRTA SHINTA DAN KELAYAKANNYA UNTUK INDUSTRI ETHANOL DI KOTABUMI LAMPUNG UTARA Riyadi, Agung
JURNAL TEKNOLOGI LINGKUNGAN Vol 7, No 3 (2006): JURNAL TEKNOLOGI LINGKUNGAN
Publisher : Badan Pengkajian dan Penerapan Teknologi (BPPT)

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Abstract

PT. Medco Ethanol Lampung has been constructed factory for cassavaand mollase processing in order to product Rectified-Ethanol at Talang JaliVillage, Kotabumi North Lampung. The estimation of capacity productionis around 190.000 liter per day. Maximum necessity of fresh water forfactory operasional is about 8.507 m /hari. For the measurement depthand water volume Tirta Shinta Reservoir get the volume is about3.155.434 m with the avarage depth for 1 – 6 meter, while the dischargeof water at outflow for agricultural is about 138.270 m per day at rainyseason. If the water from Tirta Shinta reservoir use for main factory, andthe total capacity reservoir only used 4.3 %, if nothing flow from riverbecause dry season, and now Tirta Shinta reservoir can be supply only17.7 month during dry season. Based on the environmental aspect, ifbetter, a fresh water supply for ethanol factory from river has a big rate offlow. This present, beside for farming activity and tourism, the most ofsurface water reservoir covered by water plant that make problem forfactory operational, specially for water pump.
KARAKTERISTIK AIR TANAH DI KECAMATAN TAMANSARI KOTA TASIKMALAYA Riyadi, Agung
JURNAL TEKNOLOGI LINGKUNGAN Vol 8, No 3 (2007): JURNAL TEKNOLOGI LINGKUNGAN
Publisher : Badan Pengkajian dan Penerapan Teknologi (BPPT)

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Abstract

Pumping test are carried out to determine how much groundwater taken from a well and what effects pumping will have on the aquifer. Theis recovery method aims to find out the aquifer characteristics such as transmisibility and permeability values. This method in principle observes the recovery of ground water surface until stable. This research location at Tamansari distric Tasikmalaya West Java. The value of transmisibilitas and permeabilitas in Tamansari district indicated the groundwater potency is not good for industry ot comercial water. Higher value at Sukahurip and lowest value at Bantarhuni with a permeability coeficient only 1.32 m2/day. Ground water flow (m3/day) between 410 – 4868 m3/day at Mugarsari. Ground water resources is limited potency, especially at dry season, local goverment need to conserv with a build pond or fishpond for reserve water.
FAKTOR INTERNAL DAN EKSTERNAL YANG MEMPENGARUHI KINERJA KEUANGAN PDAM KOTA SURAKARTA Riyadi, Agung
JEJAK: Jurnal Ekonomi dan Kebijakan Vol 2, No 1 (2009): March 2009
Publisher : Semarang State University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jejak.v2i1.1455

Abstract

This research had an aims to analyse financial performance of PDAM, to analyse the internal andexternal factors that influenced financial performance of PDAM and to analyse the most dominant factoramong internal and external factors.This research reached the aims with the theory of financial performance, the theory of public goodsand the theory of turbulency economy. Mixing of all the theories brought to the hyphotesis that theinternal factors like price of water, revenue, and cost and the external factors like rate of inflation andexchange rate influenced financial performance of PDAM. This research used OLS without constantaregresion equation and Chow’s test to test the hyphotesis.This research showed that PDAM financial performance was good and consisted of debt structureperformance, financial efficiency performance, and profit performance. The internal and external factorsbuilt a linkage that influenced the financial performance. The internal factors that influenced the financialperformance were price of water, revenue, and cost. The external factors that influenced the financialperformance were rate of inflation and exchange rate. The most dominant factor was revenue. Thisresearch also showed that PDAM applied average cost pricing.Keywords: internal and external factors, regulated price, financial performance
Asupan gizi dan status gizi sebagai faktor risiko hipertensi esensial pada lansia di Puskesmas Curup dan Perumnas Kabupaten Rejang Lebong Propinsi Bengkulu Riyadi, Agung; Wiyono, P; Budiningsari, R Dwi
Jurnal Gizi Klinik Indonesia Vol 4, No 1 (2007): Juli
Publisher : Minat S2 Gizi dan Kesehatan, Prodi S2 IKM, Fakultas Kedokteran UGM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijcn.17464

Abstract

Background: Hypertension is happened generally at someone who has age more than 40 year. The prevalence of hypertension was tend to increase along with the increasing of amount of the elderly. Changing of nutrition status and unfavorable nutrition intakes like is high fat, sodium and low micronutrients (potassium, calcium, magnesium) have an effect to incidence of essential hypertension. Retreating of biologic accompanying aging process sometimes make the elderly become resistance to get quality of intakes nutrition.Objective: The study was conducted to know relations between nutrition intakes and nutrition status with occurrence on essential hypertension of the elderly in the health center Curup and Perumnas, Rejang Lebong District.Method: The study was observational analytic with case control matched study. Subject of the study was divided into two group i.e. case and control with comparison case and control 1:1 which matched to age and sex. Total subject were 150, taken by simple random method. The cases were essential hypertension patients who had recently diagnosed by doctors. Blood pressure measurements were three times in supine position. Hypertension was defined as average of three times supine systolic/diastolic blood pressures at p >140/ 90 mmHg. Nutrition status was determined by Body Mass Index (BMI). Intake nutrients were collected using Food Frequency Questionnaire (FFQ) in the last 3 months by using food model. χ 2 McNemar were used to bivariate analytic and condition logistic regression to identify risk factors associated with essential hypertension.Result: This study showed that there were 4 variables significantly related with essential hypertension, i.e. intakes of sodium (OR: 3.43; CI 95%:1.09-10.77), potassium (OR: 0.24; CI 95%:0.07-0.84), stress (OR: 3.79; CI 95%:1.18-12.12), and obesity (OR: 4.57; CI 95%:1.49-13.95). The no significant correlation (p>0.05) identified for intakes of fat, calcium, magnesium, coffee consumption, smoking status and family history of essential hypertension.Conclusion: High intake of sodium, stress and obesity were the risk factors on occurrence of essential hypertension. In the other hand, high intake of potassium were reduce the risk on occurrence of essential hypertension (protective factor) in the health center Curup and Perumnas, Rejang Lebong District.
KAJIAN KUALITAS PERAIRAN LAUT KOTA SEMARANG DAN KELAYAKANNYA UNTUK BUDIDAYA LAUT Riyadi, Agung
Jurnal Teknologi Lingkungan Vol 6, No 3 (2005): JURNAL TEKNOLOGI LINGKUNGAN
Publisher : Center for Environmental Technology - Agency for Assessment and Application of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/jtl.v6i3.359

Abstract

      Marine culture develoment at Semarang Central java coast is notincreased. Based on water quality, a good water quality conditions at line 3,beside far for human activities, the dissolved oxygen and turbidity level stillsuitable for marine culture activities. The dissolved oxygen value from 4.8 – 5mg/l. Comparing with the second station (line l and 2) dissolved oxygen (DO) israther low and turbidity level is very hight, turbidity value until 4 FTU. The method using digital device Chlorotech type AAQ 1183, Alecs Electronics for describing the characteristicsof tropical coastal hydrography and water quality.
POTRET KONDISI PERAIRAN DI PULAU KARANG CONGKAK KEPULAUAN SERIBU, DKI JAKARTA Riyadi, Agung
Jurnal Air Indonesia Vol 3, No 2 (2007): Jurnal Air Indonesia
Publisher : Center for Environmental Technology

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Abstract

Pulau Panggang in Kepulauan Seribu district have  many small corall island sand, many reef flat the island. Approximately have  four island reefs and there are relatively wide, that are a P. Karang Semak Daun, P. Karang Beras, P. Karang Congkak and P. Karang Bongkok. Karang Congkak Island  has reef flat and its area is more than 169,36 Ha, while  land area is just only 0,6 Ha and  0,5 – 2 meter depth. Water quality include temperature distribution about 29,8 – 30,4 oC, dissolved oxygen 6,001 – 7,110 mg/L, salinity 32,891 – 33,214 PSU, turbidity 0,518 – 1,944 FTU,chlorophyll 0,204 – 0,563 ug/L and pH about 8,505 -8,592 and its quality relative normal. Current velocity about 0,102 – 0,407 m/s at the reef flat, this conditions is relative height all along monsoon until corall reff many a massive type, at the some location have good corall conditon. Karang Congkak Island has potency for tourism maritime. Determining of sea protection at Karang Congkak island is very useful to preserve remainder corall reef existence. Keywords : reef flat, waters quality, preserve area
KAJIAN STATUS WADUK TIRTA SHINTA DAN KELAYAKANNYA UNTUK INDUSTRI ETHANOL DI KOTABUMI LAMPUNG UTARA Riyadi, Agung
Jurnal Teknologi Lingkungan Vol 7, No 3 (2006): JURNAL TEKNOLOGI LINGKUNGAN
Publisher : Center for Environmental Technology - Agency for Assessment and Application of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29122/jtl.v7i3.394

Abstract

PT. Medco Ethanol Lampung has been constructed factory for cassavaand mollase processing in order to product Rectified-Ethanol at Talang JaliVillage, Kotabumi North Lampung. The estimation of capacity productionis around 190.000 liter per day. Maximum necessity of fresh water forfactory operasional is about 8.507 m /hari. For the measurement depthand water volume Tirta Shinta Reservoir get the volume is about3.155.434 m with the avarage depth for 1 – 6 meter, while the dischargeof water at outflow for agricultural is about 138.270 m per day at rainyseason. If the water from Tirta Shinta reservoir use for main factory, andthe total capacity reservoir only used 4.3 %, if nothing flow from riverbecause dry season, and now Tirta Shinta reservoir can be supply only17.7 month during dry season. Based on the environmental aspect, ifbetter, a fresh water supply for ethanol factory from river has a big rate offlow. This present, beside for farming activity and tourism, the most ofsurface water reservoir covered by water plant that make problem forfactory operational, specially for water pump.