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PEMANFAATAN MINYAK BIJI KETAPANG, MINYAK MINAREK DAN MINYAK KERNEL KELAPA SAWIT SEBAGAI BAHAN PELUNAK DALAM PEMBUATAN KOMPON KARET Sugiyono, Bambang; Hamzah, Basuni; Wijaya, Agus
Jurnal Dinamika Penelitian Industri Vol 26, No 2 (2015): JURNAL DINAMIKA PENELITIAN INDUSTRI
Publisher : Balai Riset dan Standardisasi Industri Palembang

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Abstract

Penelitian ini bertujuan untuk mengkaji karakteristik kompon karet dengan menggunakan bahan pelunak minyak ketapang dan minyak kernel kelapa sawit pada pembuatan kompon karet. Rancangan yang digunakan pada penelitian ini adalah Rancangan Acak Lengkap Faktorial (RALF) dengan 2 (dua) faktor, yaitu konsentrasi minyak yang digunakan (10 phr, 15 phr dan 20 phr) danjenis minyak sebagai bahan pelunak (minyak minarek, minyak kernel kelapa sawit, dan minyak ketapang) dengan 3 (tiga) kali ulangan.Perlakuan terbaik diperoleh pada perlakuan A1B3 (minyak kernel kelapa sawit 10 phr), dengan karakteristik kompon karet meliputi kekerasan sebesar 79 Shore A, tegangan putus sebesar 137,33 kg/cm2, perpanjangan putus 754,67%. Hasil pengujian ketahanan sobek terbesar pada perlakuan A3B3(96,33 Kg/cm2), dan berat jenis paling kecil pada perlakuan A1B1sebesar 1,08 g/cm3. Minyak biji ketapang dan minyak kernel kelapa sawit dapat dijadikan pengganti minyak minarek sebagai bahan pelunak pembuatan kompon karet karena selain minyak tersebut alami, tidak bersifat karsinogenik, dapat mengurangi impor minyak minarek.
Pengaruh suhu dan waktu vulkanisasi terhadap karakteristik kompon sol karet cetak berbahan pengisi arang cangkang sawit Pireno, Cahyo Adi; Wijaya, Agus; Pambayun, Rindit
Jurnal Dinamika Penelitian Industri Vol 24, No 1 (2013): JURNAL DINAMIKA PENELITIAN INDUSTRI
Publisher : Balai Riset dan Standardisasi Industri Palembang

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The purpose of this research was to study the effect of temperature and time of vulcanization in rubber sole compound manufacturing by utilizing palm shell charcoal as filler. The research was carried out at Industrial Research and Standardization Laboratory Palembang on May to November 2012. Experimental design used in this study was factorial completely randomized design (CRD). Two factors were investigated, namely temperature (designed as T with the following three levels: 130, 140 and 150 °C) and vulcanization time (designed as W with the following levels, 10, 12 and 14 minutes). The observed physical parameters were according to SNI 0778: 2009, including tensile strength, elongation at break, hardness and tear strength. The results showed that temperature and time of vulcanization significantly affected all physical parameters. The best physical properties result was obtained in the treatment T1W1 (vulcanization temperature of 130 °C and vulcanization time of 10 minutes) with the following values: tensile strength of 17.567 N/mm2, elongation at break of 578.33%, hardness of 59 Shore A and tear strength of 5.167 N/mm2 with all physical parameters met SNI quality standard.Keywords : Vulcanization, compound, filler, palm shell charcoalAbstrakTujuan dari penelitian ini adalah mempelajari pengaruh suhu dan waktu vulkanisasi pada pembuatan kompon sol karet cetak dengan memanfaatkan arang cangkang sawit sebagai bahan pengisi. Penelitian dilaksanakan di Balai Riset dan Standardisasi Industri Palembang dan dilaksanakan bulan Mei sampai November 2012. Rancangan percobaan yang digunakan adalah Rancangan Acak Lengkap (RAL) faktorial dengan tiga variasi suhu (T1: 130 °C, T2: 140 °C, T : 150 °C) dan tiga variasi waktu vulkanisasi (W1: 10 menit, W2: 12 menit, W3: 14 menit). Parameter yang diuji adalah parameter uji sesuai dengan SNI 0778:2009 tentang sol karet cetak yaitu tegangan putus, perpanjangan putus, kekerasan dan ketahanan sobek. Hasil penelitian menunjukkan bahwa suhu dan waktu berpengaruh nyata terhadap semua parameter uji fisik. Perlakuan yang memberikan hasil terbaik diperoleh pada perlakuan suhu vulkanisasi 130 °C dan waktu vulkanisasi 10 menit (T1W1) dengan nilai parameter uji tegangan putus sebesar 17,567 N/mm2, perpanjangan putus 578,33%, kekerasan sebesar 59 Shore A dan ketahanan sobek 5,167 N/mm2 dengan semua parameter uji fisik memenuhi syarat SNI.Kata kunci: Vulkanisasi, kompon, bahan pengisi, arang cangkang sawit
EVALUASI DAYA TAMPUNG SISTEM DRAINASE PADA JALAN TONGKONAN RANNU KOTA SANGATTA WIJAYA, AGUS
KURVA S JURNAL MAHASISWA Vol 1, No 1 (2017)
Publisher : KURVA S JURNAL MAHASISWA

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Kabupaten  Kutai Timur merupakan  kabupaten hasil pemekaran dari Kabupaten Kutai berdasarkan  UU  Nomor  47 Tahun 1999, Tentang Pemekaran Wilayah  Provinsi  dan  Kabupaten yang  diresmikan  oleh  Menteri Dalam Negeri pada tanggal 28 Oktober 1999.Daya dukung wilayah perkotaan terutama ketersediaan lahan yang sesuai dengan peruntukannya, perkembangan perekonomian serta pertumbuhan penduduk akan mempengaruhi pola dan kualitas pemanfaatan ruang. Keseimbangan lingkungan selalu bergeser, dan cenderung mendekati ke arah ambang batas minimal, seperti berkurangnya ruang terbuka hijau, kualitas badan sungai, daerah resapan air, dan kualitas udara tebas. Berkurangnya lahan-lahan atau dapat mengurangi kualitas dan kuantitas infiltrasi air hujan yang jatuh rutin semusim sekali. Langsung maupun tidak langsung, cepat atau lambat, pengaruh perubahan siklus hidrologi ini berdampak pada kondisi lingkungan dan kenyamanan tinggal khususnya di daerah perkotaan.Kondisi jaringan drainase yang ada pada saat ini menunjukkan kurang mampu dan optimal  dalam mengalirkan  air hujan ke hilir dengan  baik, sehingga  sering  terjadi banjir/genangan di beberapa tempat menimbulkan kerugian langsung kepada penduduk dan juga kelancaran arus lalu lintas.Jika dilihat dari akar permasalahan, dari hasil investigasi disimpulkan bahwa bencana banjir secara fisik disebabkan oleh :(1)   curah hujan yang tinggi, (2)   karakteristik DAS  (3)   penyempitan saluran drainase, (4)   perubahan penutupan lahan. Dari keempat tersebut 2 (dua) penyebab pertama berada diluar kemampuan manusia untuk dapat melakukan intervensi.Oleh karna itu, evaluasi daya tampung sistem drainase sangat diperlukan sebagai solusi untuk menanggulangi permasalah limpasan hujan yang terjadi pada Jalan Tongkonan Rannu Kota Sangatta.
Prinsip Penggunaan Tertinggi dan Terbaik Untuk Menentukan Jenis Pemanfaatan Lahan Pasar Wijaya, Agus; Setiawan, Putu Rudy
Journal of Regional and City Planning Vol 19, No 2 (2008)
Publisher : Center for Research and Community Services ITB

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Abstract

A piece of land located strategically in the downtown of Bulukumba City covering 11.440 sq meters, owned by Bulukumba Regency, has been left unoccupied for more than 8 years. The land is formerly occupied by Bulukumba central market which was relocated 8 years ago. Since then the land was remain unmanaged and no effort has never been made to develop it for instance by permitting generating income activities or even social activities to exploit the land. The paper aims to determine the best use of that piece of land. The best land use is obtained by employing Highest and Best Use Method. This kind of method needs land market value as indicator assuming that the highest value reflects the best use of land. The highest land value for specific kind of land use is obtained by involving land residual technique and cash flow method. The result will then be compared by the land value for the same land in vacant condition by using direct market comparison method. The research concludes that the highest and best use of the land, which formerly used for central market in Bulukumba city, is shopping centre. This kind of land use may create market land value as high as Rap. 2.000.000,-/m².
Clinical Signs and Haematology Profiles of Beagle Dogs with Tick Infestation Mihardi, Arief Purwo; Joesoef, Jayusman Arsiyanti; Wolo, Kathirina Beathrik Riwu; Esfandiari, Anita; Widhyari, Sus Derthi; Wulansari, Retno; Wijaya, Agus; Maylina, Leni
Jurnal Medik Veteriner Vol. 5 No. 2 (2022): October
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jmv.vol5.iss2.2022.266-269

Abstract

Rhipicephalus sanguineus is one of the vectors that could induce diseases in dogs. A physical examination and haematology test could examine the dog's condition with tick infestation. Five dogs, beagle breeds from Veterinary Teaching Hospital, School of Veterinary Medicine and Biosciences, IPB University, have been examined for physical examination and CBC test. A haematology test was performed using a haematology analyzer and made the blood smear. Physical examination showed that 60% of dogs have a tick infestation, 80% have pallor, 60% have pruritus, 40% have crusted skin, and 100% have wounds in extremities. However, the body temperature and heart rate were relatively normal. Complete blood count test showed that red blood cells (RBC), peak cells volume, and haemoglobin (Hb) decreased (80%), MCHC increased (40%), thrombocytopenia (100%), leukopenia (40%), lymphocytopenia (60%), neutropenia (10%) and monositopenia (80%). The blood smear result showed all dogs have positive blood parasites, with the highest percentage being the third dog (0.056%). From the physical examination, CBC, and blood smear, it can be concluded that dogs with tick infestation would experience anaemia that showed by RBC, PCV, decreasing number of platelet and positive blood parasite.
Ultrasonography Profile of Myxomatous Mitral Valve Disease on An 11-Year-Old Poodle Wah, Toh Pei; Wijaya, Agus; Murtiningrum, Fitria Senja; Iman, Bintang Nurul; Noviana, Deni
Jurnal Medik Veteriner Vol. 7 No. 1 (2024): April
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jmv.vol7.iss1.2024.212-218

Abstract

Myxomatous mitral valve disease (MMVD) is a prevalent inherited mitral valve condition. This study aimed to evaluate the clinical manifestation of the cardiac condition MMVD in Poodles. Using ultrasonography (USG), this study examined the characteristics, progression, diagnosis, and treatment of MMVD in an 11-year-old Poodle. This case study was conducted at the Veterinary Teaching Hospital, School of Veterinary Medicine and Biomedical Sciences, utilizing a Chison Ebit60 with an 8–12 MHz curvilinear probe. The dog was positioned in the right parasternal recumbency position, and the long axis (RPLA) and short axis (RPSA) views were obtained. In the evaluation and diagnosis, B-Mode, M-Mode, and Color Flow Doppler (CFD) modes of ultrasonography were performed. The dog presented with coughing, and the physical examination revealed a grade 3–4 murmur. Based on B-mode cardiac monitoring, sinus arrhythmia, mitral valve thickness, and prolapses indicate MMVD. Mitral regurgitation was indicated by a decrease in heart rate and an increase in the left ventricle internal dimension (LVIDd) on the M-mode. Meanwhile, CFD's representation of turbulent flow confirmed mitral regurgitation results. The rise in blood pressure confirmed the presence of hypertension. Class B2 MMVD in Poodles has consequently been diagnosed in this case.
Evaluasi Kualitas Fisik dan Fitokimia Ransum melalui Kombinasi Daun Lamtoro dan Indigofera Riswandi, Riswandi; Muhakka, Muhakka; Wijaya, Agus; Imsya, Afnur; Karomah, Cici
Seminar Nasional Lahan Suboptimal Vol 10, No 1 (2022): Prosiding Seminar Nasional Lahan Suboptimal ke-10 “Revitalisasi Sumber Pangan N
Publisher : Pusat Unggulan Riset Pengembangan Lahan Suboptimal (PUR-PLSO) Universitas Sriwijaya

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Riswandi R, Muhakka M, Wijaya A, Imsya A, Karomah C. 2022. evaluation of the physical and phytochemical quality of the ration through the combination of leucaena and indigofera leaves.  In: Herlinda S et al. (Eds.), Prosiding Seminar Nasional Lahan Suboptimal ke-10 Tahun 2022, Palembang 27 Oktober 2022. pp. 254-262. Palembang: Penerbit & Percetakan Universitas Sriwijaya (UNSRI).Tree legume supplementation is a solution to improve the quality of rations in traditional ruminant rearing systems, because they contain high nutrients. The purpose of this study was to evaluate the physical and phytochemical quality of bento grass based rations through the combination of Lamtoro and Indigofera leaves. This research was conducted for 3 months at the Animal Feed Nutrition Laboratory, Faculty of Agriculture, Sriwijaya University. This study used a completely randomized design (CRD) with 4 treatments and 4 replications. The treatments consisted of R0 (70%  Bento Rayap Grass + 30% Concentrate), R1 (40% Bento Rayap Grass + 30% Concentrate + 30%  Leucaena leaves), R2 (40% Bento Rayap Grass + 30% Concentrate + 30% Indigofera) , R3 ( 40%  Bento Rayap Grass + 30% Concentrate + 15% Leucaena leaves + 15% Indigofera). Parameters observed in the physical quality test were specific gravity (SG), pile density (PD), water absorption (WA) and moisture content (MC). Phytochemical analysis consists of tannins and saponins. The results of this study showed that the treatment had a significant effect (P<0.05) on SG, PD, WA, tannin and saponins while the MC had no significant effect (P>0.05). Furthermore, the lowest content of SG (0.47 g/ml) and WA (381.71%) was obtained at R2, the highest PD (0.23 g/cm3) at R1. The highest concentration of tannins (3.16%) and saponins (2.08%) was obtained at R1. The conclusion of this study showed that the combination of 40% Bento Rayap grass + 30% concentrate + 30% Leucaena leaves could improve the physical and phytochemical quality of the ration.
Minuman Fungsional dari Kombinasi Kopi Robusta Natural Anaerob, Ekstrak Katekin Gambir dan Pinang Muda Suharto, Firza Fahleffi; Santoso, Budi; Wijaya, Agus; Priyanto, Gatot
Seminar Nasional Lahan Suboptimal Vol 10, No 1 (2022): Prosiding Seminar Nasional Lahan Suboptimal ke-10 “Revitalisasi Sumber Pangan N
Publisher : Pusat Unggulan Riset Pengembangan Lahan Suboptimal (PUR-PLSO) Universitas Sriwijaya

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Suharto FF, Santoso B, Wijaya A, Priyanto G.  2022. Functional drink from combination of natural anaerobic coffee, gambier catechin extracts and young areca nut. In: Herlinda S et al. (Eds.), Prosiding Seminar Nasional Lahan Suboptimal ke-10 Tahun 2022, Palembang 27 Oktober 2022. pp. 423-442. Palembang: Penerbit & Percetakan Universitas Sriwijaya (UNSRI).This study aimed to determine the effect of natural anaerobic robusta coffee formulation, raw extract of catechin gambier and young areca nut on the characteristics of functional coffee. This study used a non-factorial Completely Randomized Design (CRD), namely the formulation of natural anaerobic robusta coffee, gambier catechin crude extract and young areca nut powder. Each treatment was repeated 3 times. Each treatment was as follows: 100% natural anaerobic robusta coffee: 0% crude catechin gambier extract: 0% young betel nut powder; 89% natural anaerobic robusta coffee: 7% crude extract of gambier catechins: 4% young areca nut powder; 86% natural anaerobic robusta coffee: 7% crude extract of gambier catechins: 7% young areca nut powder; 83% natural anaerobic robusta coffee: 7% raw extract of gambier catechins: 10% young areca nut powder; 80% natural anaerobic robusta coffee: 7% crude extract of gambier catechins: 13% powdered areca nut. The parameters observed in this study were chemical characteristics (pH, total phenol, antioxidant activity, water content and ash content), physical characteristics (colour) and sensory tests (color, taste and aroma). The results showed that the addition of gambier catechin extract and powdered areca nut significantly affected the color (lightness (L*), redness (a*), yellowness (b*)), total phenol and antioxidant activity. The best treatment was a combination of natural anaerobic robusta coffee 80%: 7% gambier catechin crude extract: young areca nut 13% based on antioxidant activity and total phenol with characteristic pH 5.21, total phenol 171.07 mgGAE/g, antioxidant activity 23.28 ppm, 7.17% water content and 5.98% ash content.
Penambahan Gula Aren dan Krim dalam Kopi Gambir Framida, Framida; Santoso, Budi; Wijaya, Agus; Priyanto, Gatot
Seminar Nasional Lahan Suboptimal Vol 10, No 1 (2022): Prosiding Seminar Nasional Lahan Suboptimal ke-10 “Revitalisasi Sumber Pangan N
Publisher : Pusat Unggulan Riset Pengembangan Lahan Suboptimal (PUR-PLSO) Universitas Sriwijaya

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Framida F, Budi S, Wijaya A, Priyanto G. 2022. Adding palm sugar and vegetable creamer on gambier coffee. In: Herlinda S et al. (Eds.), Prosiding Seminar Nasional Lahan Suboptimal ke-10 Tahun 2022, Palembang 27 Oktober 2022. pp. 368-387. Palembang: Penerbit & Percetakan Universitas Sriwijaya (UNSRI).Gambir coffee has a high content of chlorogenic acid so it is very good for health, but it is necessary to improve the taste because of its bitter taste so palm sugar is chosen because it has a lower glycemic index of 35 and vegetable creamer which contains high saturated fatty acids so it is more stable to oxygen and oxygen. long term rancidity. This research aimed to determine the effect of addition palm sugar and vegetable creamer to the chemical and sensory characteristics of gambir coffee. This research used a Factorial Completely Randomized Design (RALF) with 3 factors and was repeated 3 times. Treatment factors include the addition of palm sugar and vegetable creamer with concentrations (b/b) of 20g, namely 20% (4g), 40% (8g) and 60% (12g). Parameters observed included chemical characteristics (moisture content, ash content, total phenol, antioxidant activity, total sugar and pH) and sensory characteristics using a preference test, included color, aroma and taste. The results showed that the addition of palm sugar and vegetable creamer was significantly affected the ash content, total phenol, antioxidant activity, total sugar, pH, and taste on sensory parameters. Gambir coffee with the addition of palm sugar 40% (8g) and vegetable creamer 60% (12g)  was the best treatment with preference test (2.92 for color; 3 for aroma and 2.92 for taste). and chemical characteristics was in accordance with SNI standard for ground coffee, namely water content 5.82%; ash content 4.09%; total phenol 17.32 mgGAE/g; IC50 140.82 ppm; total sugar 11.70% and pH 8.17.
Pengaruh Lama Fermentasi Kulit Kopi Robusta dan Arabika terhadap Mutu Teh Cascara Serta Uji Keama Sugito, Sugito; Rosidah, Umi; Wijaya, Agus
Seminar Nasional Lahan Suboptimal Vol 10, No 1 (2022): Prosiding Seminar Nasional Lahan Suboptimal ke-10 “Revitalisasi Sumber Pangan N
Publisher : Pusat Unggulan Riset Pengembangan Lahan Suboptimal (PUR-PLSO) Universitas Sriwijaya

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Sugito S, Rosidah U, Wijaya A.  2022. The Effect of fermentation time on quality and safety aspect of robusta and arabica cascara. In: Herlinda S et al. (Eds.), Prosiding Seminar Nasional Lahan Suboptimal ke-10 Tahun 2022, Palembang 27 Oktober 2022. pp. 1073-081. Palembang: Penerbit & Percetakan Universitas Sriwijaya (UNSRI).The effect of fermentation time of robusta and arabica coffee skin on cascara tea quality and safety was studied in this research.  Robusta and arabica coffee skin were collected from Semendo area in Muara Enim District, South Sumatera Province, whereas cascara tea was then produced later. A non factorial completely randomized design was used and one factor was investigated, namely fermentation time of coffee skin (cascara). There were 8 factor levels, including non-fermented arabica cascara, 2, 4 and 6-hour fermented arabica cascara, non fermented Robusta cascara, 2, 4 and 6-hour fermented Robusta cascara.  All experiment was carried out in triplicates.  Observed parameters were physical (color), chemical (water content, pH value and total phenol content) as well as safety (metal impurities, including Pb, Cu, Zn, Hg and As content) characteristics. The results showed that fermentation time significantly decreased lightness, hue, water content, pH value and  total phenol content of brewed tea, whereas chroma increased significantly.  In conclusion, the best treatment factor for Robusta cascara was the one that was fermented for 4 hours with the following characteristics: lightness 40.77%, hue 62.45O, water content 5.12%, pH 4.72, and total phenol content 1.92 mgGAE/g, whereas  the best treatment factor for Arabica cascara was the one that was fermented for 4 hours with the following characteristics: lightness 42.77%, hue 63.45O, water content 5.42%, pH 4.12, and total phenol content 2.04 mgGAE/g. Furthermore, brewed tea both  in Robusta and Arabica  contained lower  metal impurities compared to SNI standard