Ariyanto Wibowo, Ariyanto
Program Studi Ilmu Lingkungan, Universitas Diponegoro, Semarang

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LAJU EROSI DAN SEDIMENTASI DAERAH ALIRAN SUNGAI RAWA JOMBOR DENGAN MODEL USLE DAN SDR UNTUK PENGELOLAAN DANAU BERKELANJUTAN Wibowo, Ariyanto; Soeprobowati, Tri Retnaningsih; Sudarno, Sudarno
Indonesian Journal of Conservation Vol 4, No 1 (2015): IJC
Publisher : Indonesian Journal of Conservation

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Abstract

Rawa Jombor which located in Klaten have 3 (three) watershed as channels of water in the swamp. These watersheds are Kali Danguran Bajing Watersheds, Kali Gebyok Watersheds and Kali Jayan Watersheds. The existence of the three watersheds that passes through residential areas and agriculture in the suspect may cause sedimentation and increased fertility in Rawa Jombor. To predict rate of sedimentation on each watershed in the Rawa Jombor needed a soil erosion prediction and sedimentation models. One of model that often used is the USLE model. This research aim is to determine decrease of the function of the environment in Rawa Jombor measured from erosion and sedimentation parameters and their impact on Rawa Jombor. This research uses the USLE models to predict soil erosion and Sediment Delivery Ratio (SDR) model to  predict sediment results with the help of software ArcGIS 10.1. The results of both models obtained value erosion in the Kali Danguran Bajing watershed of 15892.39 tonnes / year, Kali Gebyok watershed of 8972.29 tons / year, and Kali Jayan watershed of 5142.95 tonnes/year. Estimation of sediment in the watershed Danguran Bajing is at 3996.94 tons / year, the watershed Gebyok of 2621.70 tons / year, while the Jayan at 1812.37 tons / year. Rawa Jombor terletak di Kabupaten Klaten memiliki 3 (tiga) DAS sebagai saluran masuknya air pada rawa. Ketiga DAS tersebut adalah DAS Kali Danguran Bajing, DAS Kali Gebyok, dan DAS Kali Jayan. Ketiga DAS tersebut melewati daerah permukiman dan pertanian di duga dapat menyebabkan sedimentasi dan peningkatan kesuburan pada Rawa Jombor. Untuk memprediksi laju sedimentasi pada tiap – tiap DAS di Rawa Jombor diperlukan suatu model pemrediksi erosi tanah dan model sedimentasi. Salah satu model yang sering digunakan adalah model USLE. Tujuan penelitian ini adalah untuk mengetahui penurunan nilai fungsi lingkungan Daerah Aliran Sungai di Rawa Jombor diukur dari parameter erosi dan sedimentasi dan dampaknya terhadap Rawa Jombor. Penelitian ini menggunakan model USLE untuk prediksi erosi tanah dan model Sediment Delivery Ratio (SDR) untuk prediksi hasil sedimen dengan menggunakan bantuan software ArcGIS 10.1. Hasil dari kedua model tersebut didapatkan nilai erosi pada DAS Kali Danguran Bajing sebesar 15.892,39 ton/tahun, DAS Kali Gebyok sebesar 8972,29 ton/tahun, dan DAS Kali Jayan sebesar 5142,95 ton/tahun. Perkiraan hasil sedimen pada DAS Danguran Bajing adalah sebesar 3.996,94 ton/tahun, pada DAS Gebyok sebesar 2.621,70 ton/tahun, sedangkan DAS Jayan sebesar  1.812,37 ton/tahun. 
Correlation between Vertebral Length and Body Height (Os. Vertebralis) in Indonesian People Yudianto, Ahmad; Wibowo, Ariyanto
Majalah Kedokteran Bandung Vol 51, No 1 (2019)
Publisher : Faculty of Medicine, Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (556.325 KB) | DOI: 10.15395/mkb.v51n1.1472

Abstract

Identification of unidentified living and dead human bodies can be carried out for the purposes of criminal investigation and other police duties. Among the most important information to identify one’s identity is the one obtained from the results of measuring the victim’s height. Thus, it is necessary to determine the height of a body of unidentified identity during the examination. To date, the correlation between the body height and vertebrae has not been widely known. The purpose of this present study was to determine the correlation between the body height and the length of the vertebrae. The study was conducted in Dr. Soetomo General Hospital from January to July 2018. This was an observational analytical study on 57 samples consisting of 32 male and 25 female samples. Results indicated that the correlation between the vertebral length (thoracic vertebra (X1) and lumbar vertebra (X2)) and the body height as determined using the following equations: Y=47.428+2.991 X1+2.13 X2 cm (male); Y=-32.496+3.800 X1+5.549 X2cm (female); show that there are quite strong when analyzed using t-test (r=0.799 for male and r=0.908 for female). In conclusions, this regression formula can be used in estimating the height found only in bones without other long bones.  Korelasi Antara Panjang Tulang Belakang (OS.Vertebralis) dengan Tinggi Badan pada Orang Indonesia  Identifikasi tubuh manusia yang tidak dikenal, baik yang masih hidup maupun yang sudah meninggal dapat dilakukan bagi kepentingan penyidikan perkara pidana dan bagi tugas kepolisian yang lain. Salah satu informasi yang sangat penting dapat digunakan untuk melacak identitas seseorang adalah informasi yang didapatkan dari hasil pengukuran tinggi badan korban. Oleh karena itu, pada waktu dilakukan pemeriksaan jenasah yang tidak diketahui identitasnya, perlu ditentukan tinggi badannya. Sejauh ini korelasi tinggi badan dengan panjang ruas tulang belakang belum banyak diketahui. Penelitian bertujuan mengetahui korelasi tinggi badan dengan panjang ruas tulang belakang. Penelitian dilakukan di RSUD Dr. Soetomo periode Januari sampai Juli 2018. Metode penelitian yang digunakan observasional analitik yang dilakukan pada 57 sampel dengan rincian 32 sampel pria dan 25 sampel wanita. Hasil penelitian, korelasi panjang tulang belakang (vertebra torakalis (X1) dan vertebra lumbalis (X2) dengan tinggi badan dengan uji t didapatkan persamaan regresi: Y=47,428+2,991 X1+2,13 X2 cm (laki-laki); Y=-32,496+3,800 X1+5,549 X2 cm (wanita). Nilai korelasi yang cukup kuat, r untuk laki-laki: 0,799 sedangkan untuk wanita 0,908. Simpulan, Formula regresi ini dapat digunakan untuk memperkirakan ketinggian yang ditemukan hanya pada tulang tanpa tulang panjang lainnya.
Acid Phosphatase and Zinc Tests Are Effective for Semen Examination and Identification to Prove Intercourse Yudianto, Ahmad; Wibowo, Ariyanto; Nuraini, Indah; Aung, Htet Htet
Folia Medica Indonesiana Vol. 56 No. 3 (2020): September
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (283.851 KB) | DOI: 10.20473/fmi.v56i3.24546

Abstract

The presence of spermatozoa in vagina is a definite sign of sexual intercourse. However, sometimes microscopic examination does not find spermatozoa or reveals a false negative result. This is influenced by many factors, including the absence of ejaculate in the vaginal canal. In addition, there are other factors such as oligo/azoospermia, vasectomy, degeneration of sperm due to time, incorrect sampling, and improper storage. Therefore, examination of the other components of the ejaculate, ie. the enzyme acid phosphatase, choline and spermin, is important. Compared with spermatozoa, the enzyme phosphatase, choline and spermin have lower evidentiary value because these three components are less specific. However, the level of phosphatase enzyme found in the vagina is much lower than phosphatase enzyme that comes from prostate gland. In this study, as many as 192 samples in the form of patches with sperm/semen stains were tested with acid phosphatase test and zinc test through direct and indirect examination. In the first method, washing was carried out on day 1, day 7, and month 3, and testing was carried out after each washing. In the second method, washing was carried out simultaneously and testing was carried out on day 1, day 7 and month 3. Washing was carried out using 7 types of detergent for each 4 patch samples, and washing using water as control. The results showed very low sensitivity (0.186) and very high specificity (100%). This showed that both tests had high specificity values. Acid phosphatase test specifically showed the presence of the enzyme phosphatase, while zinc test specifically showed the presence of zinc in semen. This phosphohydrolase-phosphatase enzyme is easily degraded due to external factors, including temperature, humidity, and chemicals, ie. the element SDS (Sodium Dodecyl Sulfate) that has the ability to cut enzymes. The weakness of the acid phosphatase test is that this enzyme is easily degraded, either partially or completely, due to external factors, such as temperature, humidity, heat, and the presence of chemicals.