Article Per Year (5 Year)
p-Index From 2020 - 2025
0
P-Index
This Author published in this journals
All Journal Media Teknik Sipil JURNAL ITENAS REKARUPA Jurnal Manajemen dan Bisnis Sriwijaya Pena Medika : Jurnal Kesehatan INPAFI (Inovasi Pembelajaran Fisika) Jurnal Ekonomi Bisnis dan Kewirausahaan
Purwanto .
Unknown Affiliation
Civil Engineering, Building, Construction & Architecture Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Health Professions Medicine & Pharmacology Nursing Physics Public Health Veterinary Other

Published : 7 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 7 Documents
Search

 1 
JEJAK KARBON PENGOLAHAN SAMPAH DI tps tlogomas malang Sunarto .; Sudharto P. Hadi; Purwanto .
Media Teknik Sipil Vol. 12 No. 2 (2014): Agustus
Publisher : Department of Civil Engineering, Faculty of Engineering, University of Muhammadiyah Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22219/jmts.v12i2.2291

Abstract

JEJAK KARBON PENGOLAHAN SAMPAH DI tps tlogomas malang Carbon Footprint of Solid Waste Processing At TPS Tlogomas MalangSunarto1, Sudharto P. Hadi2, Purwanto31,2,3Program Doktor Ilmu Lingkungan Universitas DiponegoroAlamat korespondensi : Jl. Imam Bardjo, SH No. 3 Semarang 50241Email: 1) narto@umm.ac.id, 2) sudhartophadi@yahoo.co.id.AbstractWaste sector is one of human activities that cause global warming. Decomposition of organic waste in landfill produces greenhouse gas emissions in the form of biogas consisting of methane and carbon dioxide. Solid waste processing in transfer station in the form of recycling and composting product potentially reduce carbon footprint, directly from the reduction in the volume of waste dumped in landfill and indirectly from the recovery of material. The purpose of this study was to determine the carbon footprint of waste processing at the transfer stations of Tlogomas Malang if developed several scenarios to enhance the capacity of processing. Life cycle approach is used to assess carbon footprint of waste management scenarios with the help of software SWM-GHG Calculator. The results showed that the processing of solid waste at current recycling rate of 40,57% – 80,41% (Status Quo) resulted in net carbon footprint of 1.147 ton CO2–eq /year. Increasing of processing capacity to 60 - 88% (Scenario 1) and 90 - 95% (Scenario 2) would reduce net carbon footprint to 801 ton CO2–eq /year and427 ton CO2–eq/year respectively. If the processing of waste in transfer station of Tlogomas was discontinued (Scenario 3), net carbon footprint increased to 4,063 t CO2-eq/year.Keywords: carbon footprint, greenhouse gases, solid waste processing, life cycle analysis.AbstrakSektor persampahan merupakan salah satu kegiatan manusia yang menyebabkan pemanasan global. Proses dekomposisi sampah organik pada timbunan sampah menghasilkan emisi gas rumah kaca berupa biogas yang terdiri atas gas methana dan gas karbon dioksida. Pengolahan sampah di TPS untuk produk daur ulang dan kompos berpotensi mereduksi jejak karbon secara langsung dari penurunan volume sampah yang dibuang ke TPA dan secara tidak langsung dari pemulihan material sampah. Tujuan penelitian ini adalah untuk mengetahui jejak karbon pengolahan sampah di TPS Tlogomas di Kota Malang jika dikembangkan beberapa skenario pengolahan untuk meningkatkan kapasitas pengolahan sampah yang telah dilakukan selama ini. Pendekatan daur hidup digunakan untuk menaksir jejak karbon dari beberapa skenario pengolahan sampah di TPS dengan bantuan perangkat lunak SWM-GHG Calculator. Hasil analisis menunjukkan bahwa pengolahan sampah pada saat ini dengan tingkat daur ulang sampah sebesar 40,57% – 80,41% (Status Quo) menghasilkan jejak karbon bersih sebesar 1.147 ton CO2–eq/th. Peningkatan kapasitas pengolahan sebesar 60 – 88% (Skenario 1) dan 90 – 95% (Skenario 2) akan menurunkan jejak karbon bersih menjadi masing-masing sebesar 801 ton CO2–eq/th dan 427 t CO2–eq/th. Apabila pengolahan sampah di TPS Tlogomas dihentikan (Skenario 3), jejak karbon bersih yang dihasilkan meningkat menjadi 4.063 t CO2–eq/th.Kata kunci: jejak karbon, gas rumah kaca, pengolahan sampah, analisis daur hidup.
ANALISIS EFISIENSI MANAJEMEN MODAL KERJA TERHADAP PROFITABILITAS PT. PUSRI PALEMBANG SEBELUM DAN SETELAH SPIN-OFF MARLINA WIDIYANTI; ISNURHADI .; PURWANTO .
JURNAL MANAJEMEN DAN BISNIS SRIWIJAYA Vol 12, No 4 (2014): Jurnal Manajemen dan Bisnis Sriwijaya
Publisher : Program Studi Magister Manajemen FE Unsri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29259/jmbs.v12i4.3182

Abstract

The objectives of this research are to determine the effect of the current ratio (current ratio-CR), accounts receivable turnover (turnover Receivable-RTO), inventory turnover (Inventory turnover-ITO) and working capital turnover (Working capital turnover - WCTO) to profitability (Return on assets - ROA) PT. Pusri Palembang. The population of this research is the data monthly financial report period 2009-2012. Sampling method used was purposive sampling. The data analysis technique used is multiple linear regression. The results of the study showed that partial variable current ratio and the receivables turnover has no effect on profitability (ROA) while inventory turnover and working capital turnover has a positive effect on profitability (ROA). While the results of the study showed that the variables simultaneously CR, RTO, ITO and WCTO significant positive effect on profitability (ROA) with the R-square coefficient of determination (R2) of 0.763. This means that 76.3% of the dependent variable, namely ROA is affected by the independent variable CR, RTO, ITO and WCTO, while the remaining 23.7% is influenced by other factor.
Hasil Uji Beda Warna Bahan Alami Sebagai Salah Satu Alternatif Pewarnaan pada Bahan Kain Batik Purwanto .
Jurnal Rekarupa Vol 5, No 1 (2018)
Publisher : FSRD ITENAS

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Pemanfaatan bahan pewarna sintetis pada kain pembuatan batik saat ini memang sudah banyak digunakan karena proses pengerjaan lebih mudah dan tidak memakan waktu serta warna yang dihasilkan lebih cerah dan bervariasi, namun dengan pemakaian bahan pewarna sintetis ini juga menimbulkan efek samping yang bisa mencemari lingkungan dan mengganggu kesehatan. Untuk itu saat ini sudah banyak yang memulai menggunakan pewarna alami dalam pembuatan batik. Salah satu hal penting adalah “masalah lingkungan” sehingga pewarna alami dalam pembuatan batik mulai banyak dilakukan, ada lebih dari 150 jenis tanaman yang bisa menghasilkan warna alami diantaranya daun tom/indigofera (Indigoferaferafera Sp.), kulit buah jalawe (Terminaliabellirica) dan kulit kayu tingi (Ceriops tagal). Tujuan penelitian adalah untuk mengetahui beda warna hasil pewarna alami dari fermentasi daun indigofera, ekstraksi dari kulit buah jalawe dan kulit kayu tingi untuk bahan pewarnaan pada kain batik. Metode yang digunakan dalam penelitian ini adalah dengan proses fermentasi dan ekstraksi bahan alami tersebut, kemudian dilakukan proses  fiksasi (penguncian warna). Hasil penelitian menunjukan bahwa bahan alami indigofera, jalawe dan tingi apabila difiksasi menggunakan tawas akan menghasilkan warna ke arah cerah atau warna muda, sedangkan fiksasi dengan kapur warna akan berubah agak tua dari warna asalnya.  Kata kunci :  batik, fiksasi, pewarnaan alami ABSTRACTThe use of synthetic coloring materials on batik making cloth is now widely used because the process of processing is easier and does not take time and the resulting color is brighter and varied, but with the use of synthetic coloring materials also cause side effects that can pollute the environment and interfere with health . One of the important things is "environmental problems" so that many natural dyes in batik making are starting to be done, there are more than 150 types of plants that can produce natural colors including tom / indigofera leaves (Indigoferaferafera Sp.), Jalawe fruit skin (Terminaliabellirica) and bark high (Ceriops tagal). The purpose of the study was to determine the color differences of natural coloring results from indigofera leaf fermentation, extraction from jalawe fruit peel and high bark for coloring material on batik cloth. The method used in this study is the fermentation and extraction process of natural materials, then the fixation process. The results showed that the natural ingredients of indigofera, jalawe and high when fixed using alum will produce a bright or light color, while fixation with lime color will change a little older than the original color. Then fixation with chalk will lead to older or darker colors.  Keywords : batik, fixation, natural coloring
Faktor Risiko Kejadian Obesitas pada Remaja SMA Negeri 2 dan SMA Negeri 3 di Kota Pekalongan Tahun 2010 Susi Muktiharti; Purwanto .; Imam Purnomo.; Rosmiati Saleh
Pena Medika Jurnal Kesehatan Vol 3, No 1 (2011): PENA MEDIKA JURNAL KESEHATAN
Publisher : Universitas Pekalongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31941/pmjk.v3i1.305

Abstract

Background : Amount of natural Indonesia resident of  increasing in 2001 equal to 22-24% or 48-53 million. Fatness cause some disease and health trouble like heart, hypertension, joint, diabetes mellitus, trouble hormonal. This research aim to know the factor of risk of occurence obesitas in adolescent of High School in region of North Batang. The purpose sampling is counted in 30 people of case group and 30 group people to control . Methode : Data collecting use the kuesioner and balance. Result : Result of research known nothing relation signifikan of among between knowledge storey level about obesitas ( value 1,000) and psychological factor ( value 0,579) with the occurence obesitas at adolescent. There relation signifikan mount the earnings ( value 0,016), pattern eat ( value 0,010), physical activity ( value 0,000), factor genetik ( value 0,002) and sport habit ( value 0,000) with the occurence obesitas at adolescent. better apply the pattern eat healthy, doing activity of physical and sport habit regularly, adolescent specially having history of genetis Key Word : Risk Factor, obesity
PENGARUH MODEL PEMBELAJARAN KOOPERATIF TIPE GROUP INVESTIGATION TERHADAP HASIL BELAJAR SISWA PADA MATERI POKOK SUHU DAN KALOR KELAS X SMA NEGERI I PERBAUNGAN Fitria Sakinah; Purwanto .
INPAFI (Inovasi Pembelajaran Fisika) Vol 2, No 3 (2014): INPAFI
Publisher : UNIVERSITAS NEGERI MEDAN

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (55.955 KB) | DOI: 10.24114/inpafi.v2i3.1987

Abstract

ABSTRAK Tujuan penelitian ini adalah untuk mengetahui pengaruh model pembelajaran kooperatif tipe Group Investigation terhadap hasil belajar siswa pada materi pokok suhu dan kalor di SMA Negeri I Perbaungan. Jenis penelitian adalah kuasi eksperimen. Populasi pada penelitian ini seluruh siswa kelas X SMA Negeri I Perbaungan sebanyak 6 kelas. Sampel dalam penelitian ini diambil dua kelas secara random sampling. Instrumen yang digunakan untuk mengetahui hasil belajar siswa pada materi suhu dan kalor dalam bentuk pilihan berganda yang berjumlah 20 soal dan lembar observasi. Hasil pengujian hipotesis  diperoleh bahwa ada pengaruh yang signifikan antara penggunaan model pembelajaran kooperatif tipe Group Investigation terhadap hasil belajar siswa. Kata kunci: Model kooperatif tipe group investigation   ABSTRACT The purpose of this study was to determine the effect of cooperative learning model Group Investigation on learning outcomes of students in the subject matter of temperature and heat in SMA I Perbaungan. This type of research is quasi-experimental. The population of this entire class X SMA Negeri I Perbaungan much as 6 classes. The sample in this study was taken as a random sampling of two classes. The instrument used  to determine student learning outcomes in the material temperature and heat in the form of multiple-choice questions numbered 20 and the observation sheet. The results obtained by testing hypotheses is concluded that there is a significant relationship between the use of cooperative learning model Group Investigation on student learning outcomes.   Keywords: Cooperative learning model group investigation.
FENOMENA UNDERPRICING PADA PERUSAHAAN YANG GO PUBLIC DI INDONESIA Purwanto .; Sri Wahyu Agustiningsih; Salman Faris Insani; Budi Wahyono
JURNAL EKONOMI BISNIS DAN KEWIRAUSAHAAN Vol 3 No 1 (2014): Jurnal Ekonomi Bisnis & Kewirausahaan Vol.3 No.1 Agustus 2014
Publisher : Universitas Sahid Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This research trytoanalyzethe factors thatinfluence the occurrence ofunderpricingin companies thatgopublic. This study uses a more variable varies the financial and non-financial variables contained in the prospectus which is composed of the reputation of the underwriter, auditor reputation, firm size, financial leverage, return on assets (ROA) and return on equity (ROE). According to the results of previous studies, these variables generally tend to show a significant effect on underpricing in companies that go public. This research is ekspost facto (causal comparative). Sample selection method used was purposive sampling and sample used was 132 sample companies doing an Initial Public Offering on the Indonesia Stock Exchange in the period 2002-2012. This study uses regression testing models. Regression analysis showed that nlytheunderwriterreputationsignificantly influenceunderpricing
PENGARUH STRUKTUR CORPORATE GOVERNANCE TERHADAP INITIAL PUBLIC OFFERING (IPO)UNDERPRICING DI INDONESIA Purwanto .; Sri Wahyu Agustiningsih; Salman Faris Insani; Budi Wahyono
JURNAL EKONOMI BISNIS DAN KEWIRAUSAHAAN Vol 4 No 1 (2015): Jurnal Ekonomi Bisnis Dan Kewirausahaan Vol. IV, No. 1 Januari 2015
Publisher : Universitas Sahid Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

This research trytoexaminewhethercorporate governancewhenthe company madean Initial Public Offering(IPO) affectthe level ofunderpricingshares of companies thatgo publicby usingthe period2002-2012.This studyfocuses onthe influence ofcorporate governance structureon the level ofunderpricingby usingcontrol variablesunderwriterreputation, return on assets (ROA), firm size, financial leverage, andreturn on equity(ROE). According tothe results ofprevious studies, these variablesgenerallytend toshowa significant effecton underpricingin companiesthatgo public This research is ekspost facto (causal comparative). Sample selection method used was purposive sampling and sample used was 131 sample companies doing anInitial Public Offering on the Indonesia Stock Exchange in the period 2002-2012. This study uses regression testing models. Regression analysis showed that onlytheunderwriterreputationsignificantly influenceunderpricing
Co-Authors Budi Wahyono Fitria Sakinah Imam Purnomo. ISNURHADI . Marlina Widiyanti, Marlina Rosmiati Saleh Salman Faris Insani Sri Wahyu Agustiningsih Sudharto P. Hadi Sunarto . Susi Muktiharti