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All Journal METAMORFOSA Journal of Biological Sciences Jurnal Biologi Udayana Bumi Lestari Ecotrophic, Journal of Environmental Science AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment)
I Ketut Sundra
Program Studi Biologi, Fakultas Matematika Dan Ilmu Pengetahuan Alam, Universitas Udayana
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Education Energy Environmental Science Immunology & microbiology

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TINGKAT KANDUNGAN UNSUR RADIOAKTIF AIR SUNGAI AYUNG DI DENPASAR BALI Dewa Nyoman Alit Ardana; I Wayan Budiarsa Suyasa; I Ketut Sundra
ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science) Vol 3 No 1
Publisher : Master Program of Environmental Science, Postgraduate Program of Udayana University

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Abstract

Ayung river is one of the longest rivers in Bali. The upstream of the river is in regency of Bangli, Badung, Buleleng, Tabananand downstream is located in Padang Galak beach, East Denpasar Sub-regency. As the sample of the study, the water of the river wastaken from the stream entering the city of Denpasar. The sample was taken in five different points and for each point was taken twice. Thefirst was taken at 5 p.m, and the second was at 6 a.m. This study aims at finding out the rate of radioactive content of Ayung river water inthe city of Denpasar.The water sample was analyzed in Radiometry Analysis Group of Radiation Physics and environmental research centre andNuclear Technique Development, Jalan Taman Sari 71 Bandung – 40132. The process of counting was conducted in this place in order toknow the rate of the element activities and then identification of elements contens in the sample. The result of the counting and identifyingwas compered with standard grade of radioactivity in the area.The element of identification result and the amount of activity rate found showed that the element were natural radioactiveelements, the content: 40K (Kalium-40), 234Th (Thorium-234), 233Th (Thorium-233), 228Ac (Actinium-288), 114mIn (Indium-114m). Thehighest activity of radioactive elements in each sample point: in E2 point content element 40K with the activity 2.08 Bq/lt, in point A1 234Thwith the activity 16.34 Bq/lt, in point E1 containts 233Th with activity 598.29 Bq/lt, in point E1 and E2 contain 228Ac with the activity939.63 Bq/lt. The height of activity value of the counting and identifying elements was still under the rate of the highest level.The result of the study showed that radioactive elements 40K had the tendency of increasing radioactivity. The same thinghappened to 233Th at the peak of energi 185.00 keV. The content of its radioactive tends to exist in each point of sample point and theactivity tends to increase. Though the rate of radioactivity content was still under the highest permitted level (1x104 Bq/lt for 40K and7x102 for 233Th) bu the case needs to be watched out that the dangerus grade pollution would take place.
KUALITAS AIR SUMUR GALI DITINJAU DARI KONDISI LINGKUNGAN FISIK DAN PERILAKU MASYARAKAT DI WILAYAH PUSKESMAS I DENPASAR SELATAN Ni Made Marwati; N.K. Mardani; I Ketut Sundra
ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science) Vol 5 No 1
Publisher : Master Program of Environmental Science, Postgraduate Program of Udayana University

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Abstract

water quality reduction potentially happen. Anxiously wells water quality reduction will happen in consequences frombad sanitation, like household waste water seepage, chemistries cesspool, laundry, etc.This research applied comparatively descriptive characteristic approach quantitative method. Well water wassample taken from 9 units on February and 9 units on April 2008. Sample unit was taken by purposive sampling methodfor excavated wells and random sampling method for water sample. Analysis result for well water was compared withquality standard of Bali Governor regulation No.8 ‘2007 and with quality standard of Health Minister RepublicIndonesian Rule No.907 ‘2002 and also pollution index according to Minister of Alive Environment Decision No.115‘2003. Water quality was calculated based on pollution index correlated with physical environment condition withSpearmen test (Rho) and measuring society behaviour by Sturges.Research result shows that in February for parameter BOD, Fe and total coliform slightly exceeded water qualitystandard and in April 2008 for parameter DO, BOD, Fe and total coliform slightly exceeded water quality standard class Iand drinking water quality standard. Pollution Index (IP) with result for all well water researched is under 5 (five) that is(1 < IP ? 5) including low pollution. By using Spearmen analysis, so that alternative hypothesis unaccepted, well physicalenvironment condition (IS) not in correlated to excavated wells water standard quality with Rho ( ? ) 0,147 andsignificance 0,705 more than ? 5 %. Interview result shows that 9, 10 % respondents have good behaviour and 90, 9 %respondents have understanding behaviour in maintaining clean water resource managed.Suggested to local government of Denpasar city this related to clean water (PDAM) to improve distribution ofclean water so that can fulfil 100% clean water necessity of the city. Particularly to Public Health Centre I SouthDenpasar is expected to conducting chlorinization regularly to public. Society is expected to improve well physicalenvironment condition and increases healthy life behaviour.
KUALITAS AIR SUMUR GALI DITINJAU DARI KONDISI LINGKUNGAN FISIK DAN PERILAKU MASYARAKAT DI WILAYAH PUSKESMAS I DENPASAR SELATAN Ni Made Marwati; N.K. Mardani; I Ketut Sundra
ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science) Vol 3 No 2
Publisher : Master Program of Environmental Science, Postgraduate Program of Udayana University

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Abstract

Excavated wells provide water that source from unsaturated land, so it easily contaminated by seepage so thatwater quality reduction potentially happen. Anxiously wells water quality reduction will happen in consequences frombad sanitation, like household waste water seepage, chemistries cesspool, laundry, etc.This research applied comparatively descriptive characteristic approach quantitative method. Well water wassample taken from 9 units on February and 9 units on April 2008. Sample unit was taken by purposive sampling methodfor excavated wells and random sampling method for water sample. Analysis result for well water was compared withquality standard of Bali Governor regulation No.8 ‘2007 and with quality standard of Health Minister RepublicIndonesian Rule No.907 ‘2002 and also pollution index according to Minister of Alive Environment Decision No.115‘2003. Water quality was calculated based on pollution index correlated with physical environment condition withSpearmen test (Rho) and measuring society behaviour by Sturges.Research result shows that in February for parameter BOD, Fe and total coliform slightly exceeded water qualitystandard and in April 2008 for parameter DO, BOD, Fe and total coliform slightly exceeded water quality standard class Iand drinking water quality standard. Pollution Index (IP) with result for all well water researched is under 5 (five) that is(1 < IP ? 5) classified is low pollution. By using Spearmen analysis, so that alternative hypothesis unaccepted, wellphysical environment condition (IS) not in correlated to excavated wells water standard quality with Rho ( ? ) 0,147 andsignificance 0,705 more than ? 5 %. Interview result shows that 9, 10 % respondents have good behaviour and 90, 9 %respondents have understanding behaviour in maintaining clean water resource managed.Suggested to local government of Denpasar city this related to clean water (PDAM) to improve distribution ofclean water so that can fulfil 100% clean water necessity of the city. Particularly to Public Health Centre I SouthDenpasar is expected to conducting chlorinization regularly to public. Society is expected to improve well physicalenvironment condition and increases healthy life behaviour.
ANALISIS KUALITAS AIR SUMUR GALI DI KAWASAN PARIWISATA SANUR I.A.M. Trisnawulan; I Wayan Budiarsa Suyasa; I Ketut Sundra
ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science) Vol 2 No 2
Publisher : Master Program of Environmental Science, Postgraduate Program of Udayana University

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Abstract

parts of sampling areas: Sanur Kaja 5-6 meter (SA2) and 7-8 meter (SA3), Kelurahan Sanur 3-4 meter(SB1) and 5-6 meter (SB2), Sanur Kauh 3-4 meter (SC1) and 5-6 meter (SC2), using Cluster RandomSampling method.The result in April showed that from 14 parameters examined only 5 parameters have highconcentration than the acceptable drinking water standard (PPRI no.82, 2001). Those parameters areDissolved Oxygen (DO), Biochemical Oxygen Demand (BOD5), Nitrate (NO3), Phosphate (PO4), and TotalColi form. While the result of the analyses in June showed that 9 from 14 parameters have highconcentration than the acceptable drinking water standard ( PPRI no 82, 2001) they are Total DissolvedSolid (TDS), Dissolved Oxygen (DO), Biochemical Oxygen Demand (BOD5), Nitrate (NO3), Nitrite (NO2),Ammonia (NH3), Phosphate (PO4), E. coli and Total Coli form.The increasing concentrations indicate some pollution has occurred in these sampling areas. Theobservation has shown that most of the people in Sanur dump their waste water into the ground, which easilyabsorb through the porous soil then contaminate the ground water aquifer. Based on the water quality status using the pollution index, almost all the sampling areas have low pollution index, except the one at SanurKaja 7-8 m (SA3) has moderate pollution index.
KUALITAS AIR LIMBAH PABRIK KERTAS PT. BALI KERTAS MITRA JEMBRANA l KETUT SUNDRA
ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science) Vol 6 No 1 (2011)
Publisher : Master Program of Environmental Science, Postgraduate Program of Udayana University

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Abstract

PT. Bali Paper Mitra Jembrana is a business unit engaged in manufacturing or recycling (recycle) waste paper (cardboard) into a thin paper which is known as rice paper wrap. This business has been operational since 2004 the paper every day to process anaverage of 13 tonnes of waste paper and produces an average of 10 tons/ day. The production requires 90 m3/day of ground water: 50 m3 for the cleaning cloth (shower system) and 40 m3 for cooling boiler. Heating using coal with a volume of one ton/ day. Steam heat from the boiler used for drying paper. From this process, the 90 m3 of ground water pruducted 60 m3/ day wastewater into lagoon. Waste treatment system of PT. Paper Jembr ana is still a semi-permanent using 5 lagoon with a capacit y of 651 m3. The purpose of this study was to determine the factual quality of water in physical and chemical wastewater produced PT. Bali Paper Mitra Jembrana which will be used as a data base for monitoring and management for stake holder and government. The results show, at the end of the treatment there are 5 parameters which exceeds Waste Water Quality St and ard Class II (LH Decree No. 5 of 1995) such as BODS, COD, phenols, sulfide (H2S) and lead (Pb), so it is not feasible discarded to the outside environment.
Laju dekomposisi bangkai mencit (Mus musculus) yang dikubur selama empat minggu pada media tanah humus, kapur, dan pasir pantai Cakra Diarsa; I Ketut Junitha; I Ketut Sundra
Jurnal Biologi Udayana Vol 26 No 1 (2022): JURNAL BIOLOGI UDAYANA
Publisher : Program Studi Biologi, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JBIOUNUD.2022.v26.i01.p08

Abstract

Dekomposisi bangkai terjadi segera setelah organisme mati mulai dari dekomposisi tingkat jaringan hingga tingkat molekuler. Laju dekomposisi bangkai hewan yang dikubur dipengaruhi oleh tiga faktor yaitu faktor fisik, kimia, dan biologi dari media yang digunakan mengubur bangkai. Faktor fisik berupa struktur, porositas, dan kelembaban dari media. Faktor kimia berupa pH, konsentrasi natrium, nutrien, dan oksigen yang terkandung pada media penguburan. Faktor biologi berupa jumlah dan komposisi dari koloni bakteri, invertebrata, dan flora yang hidup pada media. Tujuan dari penelitian ini adalah untuk mengetahui apakah terjadi perbedaan kecepatan dekomposisi bangkai pada media penguburan yang berbeda. Penelitian ini dilakukan dengan menggunakan bangkai mencit sebanyak 36 ekor yang dikuburkan pada tiga media berbeda yaitu tanah humus, pasir pantai, dan tanah kapur di dalam toples plastik. Masing-masing sebanyak 12 toples diisi dengan media yang sama sebagai ulangan. Bangkai mencit diamati selama 28 hari dimana tiap tujuh hari dilakukan penimbangan terhadap berat bangkai mencit dengan timbangan digital dan kondisi fisik dari bangkai mencit dicatat dan diskoring. Laju dekomposisi bangkai mencit ditunjukkan dari perbedaan rata-rata penurunan berat bangkai mencit (%) tiap minggu pada masing-masing media. Metode analisis data dilakukan dengan uji ANOVA. Hasil dari penelitian didapatkan adanya perbedaan penurunan berat dan nilai skor kondisi fisik bangkai mencit pada tiap media penguburan. Kesimpulan penelitian ini adalah waktu dan perbedaan media penguburan berpengaruh pada penurunan berat dan nilai skoring kondisi fisik bangkai mencit.
Utilization Of Organic Fertilizer Compost Made From Purple Sweet Potato Waste (Ipomoea Batatas L.) To Increase The Production Of Pakchoy (Brassica Chinensis L.) Sheila Dwi Shilviana; Ni Luh Suriani; I Ketut Sundra
AJARCDE (Asian Journal of Applied Research for Community Development and Empowerment) Vol. 5 No. 3 (2021)
Publisher : Asia Pacific Network for Sustainable Agriculture, Food and Energy (SAFE-Network)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (230.592 KB) | DOI: 10.29165/ajarcde.v5i3.70

Abstract

Compost is an organic fertilizer made from recycled organic materials. Fertilizers can be made from organic waste or unused organic waste. Purple sweet potato waste can be reused into compost. The purpose of this study was to examine the effectiveness of purple sweet potato waste compost inoculated with Trichoderma harzianum in increasing the production of pakchoi and to determine the treatment of purple sweet potato waste compost to increase the production of pakchoi. The research method used is the experimental method. The experimental design used was RBD (Randomized Block Design) with 1 factor. The experiment consisted of 4 treatments of purple sweet potato compost 25 (B) g, 50 g (C), 75 g (D), 150 g (E), and 1 control (A), and was repeated 5 times. The data analysis technique used analysis of variance (ANOVA). Parameters observed were the number of leaves, plant height, leaf width, plant wet weight, plant dry weight, and root length. The results showed that the application of purple sweet potato compost affected increasing the growth and production of pakchoi. The right treatment in increasing the growth of pakchoi is treatment E. This treatment can increase the number of leaves (13.13), plant height (16.32 cm), leaf width (4.88 cm), wet weight (16.60 g), dry weight (6.35 g), and root length (15.80 cm).
Co-Authors A.A Raka Juni Antari Anak Agung Gde Raka Dalem Anggi Suprabawati Ary Poppo Cakra Diarsa Deni Agung Priandoko Dewa Nyoman Alit Ardana I Ketut Junitha I W BUDIARSA SUYASA I.A.M. Trisnawulan Ida Ayu Gede Sutha Windari Subagia Putri Ida Bagus Gede Darmayasa IPG ARDHANA LUDGARDIS LEDHENG M. Sudiana Mahendra MADE SUSUN PARWANAYONI Martin Joni Meitini Proborini Wahyuni N. NGR. ADISANJAYA N.K. Mardani NI KADEK WIWIK SINTA DEWI Ni Luh Desy Wulandari Ni Luh Suriani Ni Made Marwati Sheila Dwi Shilviana Siti Didah Alawiah Stephanie Felitania Lestari