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All Journal Jurnal Teknoin Seminar Nasional Aplikasi Teknologi Informasi (SNATI) PROSIDING SEMINAR KIMIA Jurnal Kimia Mulawarman Jurnal Kimia Riset JURNAL ATOMIK Unisia
Chairul Saleh
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Religion Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Economics, Econometrics & Finance Education Energy Engineering Environmental Science Social Sciences

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SIMULASI PENENTUAN TITIK PERTEMUAN SISTEM MANUFAKTUR BERTINGKAT PUSH DAN PULL Chairul Saleh
Teknoin Vol. 11 No. 1 (2006)
Publisher : Faculty of Industrial Technology Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/.v11i1.92

Abstract

Production control systems for multistage manufacturing processes can be classified into push type (MRP) and pull type (JIT) systems. MRP and JIT system has its own unique advantages and disadvantages, and the advantages of both systems can be exploited to achieve better performance. A relatively new research trend associated with the MRP and JIT is to explore the possibility of hybrid system and to develop model for the integrated system. So, the choice of a production philosophy by a manufacturing company is important. The key components of overall profitability are holding cost inventory, WIP, set-up time and cost for missing due date on costumer order. The optimum lot-size associated with those of the key component. This paper presents an optimal lot-size production and integrated hybrid system with movable junction point between a Push sub-system and a Pull sub-system in production line using simulation approach. Using ARENA ® simulation software this model could solve the problem. The result can achieve minimum production cost with production output level for push system of 79 to 82 unit, decreasing WIP from 85.81 hour to 84.165 hour per cycle and decreasing waiting time in works station 2 to 5.Keywords : Push/Pull System, Lot-size, WIP, Manufacturing System
Prediksi Penyebab dan Solusi Ketidaknyamanan Kerja dengan Aplikasi Sistem Pakar Chairul Saleh; Ade Trisna P.
Seminar Nasional Aplikasi Teknologi Informasi (SNATI) 2004
Publisher : Jurusan Teknik Informatika, Fakultas Teknologi Industri, Universitas Islam Indonesia

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Abstract

Lack of attention to ergonomic factors such as attitude factor, job position, and jobdensity causes incidence uncomfortable job feeling. Hereinafter can cause accident andgenerate disease. Home industry like streets vendor process the product with special skill andcarefulness so that yield accuracy, beauty, good at measure, and according to order ofcustomer. This paper will present expert system application to detect and give solution touncomfortable job causes because of eyes strain, repetition and posture. To recognize patternpart of body along with grade of pain, cause, and solution used by artificial neural networkmethod (Back-Propagation) with trainbpx and Learning Vector Quantization. Result trainingof network obtained that to recognize cause pattern of feel pain, performance efficacytraining of trained network 99%, to recognize solution pattern of repetition cause obtained80%, hereinafter to recognize solution pattern of posture cause obtained 99%. The networkwhich have been trained can be used to predict solution and cause of uncomfortableness atdiffering case with the same variable.Keywords: expert system, neural network, back-propagation, learning vector quantization,ergonomic.
KORELASI KADAR ION LOGAM Pb TERHADAP KADAR PROTEIN PADA KERANG TAHU(Meretrix meretrix) YANGDIAMBIL DI PERAIRAN PANTAI BUNYU KALIMANTAN UTARA Edi Novian Jaya; Rudi Kartika; Chairul Saleh
PROSIDING SEMINAR KIMIA SEMINAR NASIONAL KIMIA 2017
Publisher : PROSIDING SEMINAR KIMIA

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Abstract

The Research on "Correlation Pb metal ion concentration the protein content in the shells Tahu (Meretrix meretrix) taken in coastal waters Bunyu Island North Borneo". This study aims to determine the levels of metal ions Pb and protein levels in Shell tahu based on the size and area of different sampling. Then the metal ion content of Pb and protein correlated using Least Square method. Analysis of Pb metal ion levels by using AAS (Atomic Absorption Spectrophotometer) and analysis of protein content using the Kjeldahl method. In this study, the levels of metal ions Pb at area 1 with an average of 0.638 mg / L, the levels of metal ions Pb at area 2 with an average of 0,940 mg / L, the levels of metal ions Pb in area 3 with an average of 0.664 mg / L. The protein content of the mussels out in area 1 with an average of 13.9244%, protein content in area 2 obtained an average protein content of 20.3020% and area 3 obtained an average protein content of 16.1540%. Correlation Pb levels against the protein content of the Shells tahu (Meretrix meretrix) r = 0.856 Keywords: Metal Pb, Protein, Shells Tahu (Meretrix meretrix), AAS (atomic absorption spectrophotometer), Kjeldahl Method
SINTESIS GLUTAMIDA DARI METIL ESTER MINYAK BIJI KARET (Hevea brasiliensis) DENGAN ASAM GLUTAMAT Citra Uli Sitompul; Chairul Saleh; Daniel Daniel
PROSIDING SEMINAR KIMIA SEMINAR NASIONAL KIMIA 2017
Publisher : PROSIDING SEMINAR KIMIA

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Abstract

Synthesis of glutamide from methyl ester of rubber seed oil (Hevea brasiliensis) with glutamic acid by amidation reaction has been performed. The synthesis process involves extracting, esterification and amidation. The results showed that rubber seed oil content was 39,75%, acid number 20,98 mg KOH / gr and FFA level was 10,472%. Rubber seed oil was previously converted to methyl esters through esterification process so as to obtain a decrease of FFA to 1.34%. The result of GC-MS analysis shows the most dominant methyl ester composition is methyl linoleate which is 43,11%. The amidation process is carried out by reacting the rubber seed oil methyl esters with glutamic acid. Fourier Transform-Infra Red spectrum of glutamide, showing the absorption peak for N-H group at wave number 3429,43 cm-1 and the absorption peak for C=O amide group at wave number 1643,35 cm-1. Keywords: Rubber Seed Oil, Esterification, Amidation, Glutamide.
PROFIL TUMBUHAN UMBI LOKIO (Allium chinense G.Don) Yohana Pebrina Pasaribu; Chairul Saleh; Daniel Daniel
PROSIDING SEMINAR KIMIA SEMINAR NASIONAL KIMIA 2019
Publisher : PROSIDING SEMINAR KIMIA

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Abstract

Tumbuhan umbi Lokio (Allium chinense G.Don) merupakan tanaman pangan yang dikonsumsi sebagai bumbu masakan, sayuran dan obat sehingga perlu dilakukan pengujian untuk mengetahui profil dari umbi Lokio. Profil ekstrak kasar umbi Lokio ditinjau dari hasil uji fitokimia terkandung senyawa metabolit sekunder alkaloid, fenolik, triterpenoid, flavonoid dan saponin. Berdasarkan senyawa metabolit sekunder yang terkandung maka dilakukan uji aktivitas antioksidan. Uji aktivitas antioksidan ekstrak kasar umbi Lokio menunjukkan aktivitas antioksidan sangat kuat dengan nilai I50 sebesar 99,18 ppm dan dilakukan pengujian toksisitas dengan metode Brine Shirmp Lethality Test (BSLT). Uji toksisitas ekstrak umbi Lokio menunjukkan tingkat toksisitas yang toksik dengan nilai L50 sebesar 145,3647 ppm sehingga dapat dimanfaatkan untuk bahan pencarian senyawa bioaktif antikanker. Kata Kunci: Lokio (Allium chinense G.Don), Uji Fitokimia, Uji Aktivitas Antioksidan, DPPH (1,1diphenyl-2-picrylhidrazyl), Uji Toksisitas, Brine Shirmp Lethality Test (BSLT)
SINTESIS ETILENDIAMIDA DARI METIL ESTER MINYAK BIJI BINTARO (Cerbera manghas L.) MELALUI REAKSI AMIDASI DENGAN KATALIS NaOCH3 Fath Ali Akbar; Daniel Daniel; Chairul Saleh
PROSIDING SEMINAR KIMIA SEMINAR NASIONAL KIMIA 2017
Publisher : PROSIDING SEMINAR KIMIA

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Abstract

Synthesis of ethylendimide from methyl ester of bintaro seed (Cerbera manghas L) through amidation reaction using NaOCH3 as catalyst have been done. Result of the sythesis have showed oil amount of bintaro seed are 50,36 % with acid value are 2,9192 mg KOH/g and free fatty acid are 1,4671 %. Oil of bintaro seed are converted to methyl ester using H2SO4 as catalyst for 5 hours in temperature 60-70 ºC in benzene which ratio of methanol and oil are 6:1 gave acid value are 21,4967 mg KOH/g and saponification value are 53,2352 mg KOH/g. Methyl ester of bintaro seed are reacterd with ethylendiamine and with NaOCH3 as catalyst. The result of amidation are viscous liquid and yellowish white color with acid value are 102,8435 mg KOH/g and saponification value are 33,7064 mg KOH/gram with HLB value are 13,446 which is higher than theoritically HLB value are 12,94. Analysis of FTIR showed ethylenediamide have formed which have proven by vibration of wave number at 1643,35 cm­-1 for tetiary carbonyl amide group, 1056,99 cm-1 for ─C─N─ group and 3302,13 cm-1 for ─N─H─ group, but there are wave number appearance for ester carbonyl group at 1743,65 cm-1 which showed that methyl ester are not compeletely converted into ethylenediamide. Keywords: oil of bintaro seed, esterification, amidation, ethylenediamide
SINTESIS ESTER GALAKTOSA ASAM LEMAK DARI METIL ESTER MINYAK BIJI KOPI ARABIKA (Coffea arabica) DAN GALAKTOSA ASETAT Josua K. Panannangan; Daniel Daniel; Chairul Saleh
PROSIDING SEMINAR KIMIA SEMINAR NASIONAL KIMIA 2017
Publisher : PROSIDING SEMINAR KIMIA

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Abstract

The synthesis of ester galactose fatty acid from methyl ester of arabica coffee seed oil (Coffea arabica) and galactose acetate with a toxic solvent-free synthesis process has been performed. Methyl ester oil of coffee beans is synthesized from coffee seed oil that has been macerated for 3 days with oil content of 17% and the result of methyl ester synthesis of coffee seed oil has a yield percentage of 87.93% with methanol reaction medium with 1% H2SO4 catalyst. Galactose acetate was synthesized from galactose and anhydrous acetic acid on a 1: 1 ratio resulting in galactose acetate with a yield percentage of 91.29%. The synthesis of fatty acid galactose ester from methyl ester coffee seed oil and galactose acetate was synthesized with a 1: 1 mole ratio using a 1 M M NaHCO3 catalyst with a temperature of 80-100 ºC for 6 hours yielding galactosil ester of fatty acid coffee seed oil. FTIR analysis showed that ester group formed from coffee seed oil methyl ester at wave number 1745,58 cm-1. FTIR analysis of galactosil acetate showed the presence of ester group formed from galactose at wave number 1728,22 cm-1. FTIR analysis of galactose oil seed oil ester showed the presence of ester group at wave number 1743,65 cm-1 and group (CH2)n at wave number 721,38 cm-1 with value of HLB obtained 3,494. Keywords: Coffee bean oil, galactose acetate, interesterification, fatty acid ester galactose
SINTESIS ETIL ASETAT DARI HASIL FERMENTASI KULIT SINGKONG (Manihot Esculenta L) DENGAN ASAM ASETAT MENGGUNAKAN KATALIS ASAM Tri Eva Lidiawati; Chairul Saleh; Alimuddin Alimuddin
PROSIDING SEMINAR KIMIA SEMINAR NASIONAL KIMIA 2018
Publisher : PROSIDING SEMINAR KIMIA

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Abstract

A study on the synthesis of ethyl acetate from fermented cassava peel (Manihot esculenta L) with acetic acid using acid catalyst has been done. Determination of the ratio of ethanol content with the addition of yeast bread and yeast tape, also to know the rendement of ethanol and ethyl acetate contained in cassava skin. Cassava leaf flour is hydrolyzed by using concentrated hydrochloric acid (HCl) then tested by reducing sugar content by nelson somogyi method and analyzed by using UV-Vis spectrophotometry. The hydrolysis result is divided into two parts and added yeast tape and bread yeast is also added nutrient NPK each and fermented for 5 days. The fermentation results were distilled off and analyzed using Chromatography Gas (GC). The obtained ethanol is reacted with acetic acid and sulfuric acid catalyst in the esterification reaction to obtain ethyl acetate. The esterification results were analyzed by IR spectroscopy. Ethanol obtained from Chromatography Gas (GC) analysis of 13% and esterification results from IR spectroscopic analysis showed the presence of ester (ethyl acetate) formed. Keywords: Cassava Leather, Fermentation, Esterification, Ethyl Acetate.
UJI TOKSISITAS (Brine Shrimp Lethality Test) DAN AKTIVITAS ANTIOKSIDAN DARI DAUN SINTRONG (Crassocephalum Crepidioides) DENGAN METODE 2,2-diphenyl-1-picrylhidrazil (DPPH) Fiktor Boni Pasilala; Daniel Tarigan; Chairul Saleh
JURNAL KIMIA MULAWARMAN Vol 14 No 1 (2016)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

The phytochemical test, brine shrimp lethality test and antioxidant activity test on secondary metabolits of terap (Artocarpus odoratissimus B.) leaves has been completed. The leaves samples are extracted by masseration method that is concentrated by using rotary evaporator. The total extract are fractioned with n-hexane and ethyl acetate. Based on secondary metabolits phytochemical test of terap (Artocarpus odoratissimus B.) leaves showed that total extract and Ethyl Acetat fraction extract contains alkaloids, phenolics, flavonoids, saponins, steroids and triterpenoids. N-hexane fraction extract contain alkaloids, steroids and tritepenoids. In brine shrimp lethality test, the increase larvae death data was recorded and processed using SAS Probit Analysis to determine the Lethal Concentration 50 % (LC50) value. The results of this test showed that the most active extract is metanol extract with LC50 value of 88.0227 ppm. Based on the antioxidant activity by scavenging activity of DPPH used spectrophotometry was obtained that Inhibition Concentration 50% (IC50) of total extract is 369.0833 ppm, extract of n-hexane fraction is 1532.267 ppm and extract of ethyl acetat fraction is 82.89003 ppm.
Sintesis Sabun Lunak Yang Mengandung Polihidroksi Dari Minyak Biji Kakao (Theobroma cacao,L) Chairul Saleh; Daniel Tarigan; Rabiatul Adhawiyah Al-Idrus
JURNAL KIMIA MULAWARMAN Vol 13 No 2 (2016)
Publisher : Jurusan Kimia Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Mulawarman

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Abstract

The research about synthesis of Soft Soap Containing polyhydroxy from Cocoa seed Oil, beginning with the manufacture of the polyhydroxy compound wherein the polyhydroxy compound is obtained through a process of epoxidation and hydroxylation by reacting oils cocoa beans with peroxide acetic acids (peroxy acetate was obtained from the reaction of glacial acetic acid with hydrogen peroxide) with an acid catalyst sulfate followed by oxirane ring opening process (hydrolysis) at a temperature of 40-45 oC for 2 hours, the results obtained with the reaction yield of 60 %. In the form of a mixture of soft soap is obtained by saponification of compounds polyhydroxy with Potassium Hydroxide at a temperature 70-75 oC for 1 hour with a yield of 86,45 %. Polyhydroxy compound and soap from the cocoa bean oil was analyzed by FT-IR spectrophotometer. Respectively iodine from the cocoa bean oil 102,93mg I / gram of oil and polyhydroxy compound is 20,21 mg I / gram of oil. HLB of soap Software of oil and polyhydroxy cocoa beans from the cocoa bean oil is determined by titration method and obtained HLB of soft soap from the cocoa bean oil was 8.74 while the polyhydroxy from cacao seed oil is 10,94.
Co-Authors Ade Dinaran Ade Trisna P. Alimuddin Alimuddin Aman Sentosa Panggabean Angellina Putri Petrisia Aries Oman Bohari Yusuf Citra Uli Sitompul Daniel Daniel Daniel Daniel Daniel Tarigan Djihan Ryn Pratiwi Edi Novian Jaya Fath Ali Akbar Fiktor Boni Pasilala Josua K. Panannangan Juntia Kirana Pratiwi Mayasari Azhari Rochman mutma Inna Inna Nanda Arwidhiah Novi Rindawati Nur Hamid Nur Hidayah Rabiatul Adhawiyah Al-Idrus Rahmat Gunawan Retno Juwita RR Dirgarini Julia Nurlianti Subagyono Rudi Kartika, Rudi Saibun Sitorus Sari Clara Precelia Subur P Pasaribu Tasik Sinta Tri Eva Lidiawati Widyanto Saptawan Priambodo Winni Astuti Yohana Pebrina Pasaribu Yuly Syafriyanti