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Journal of Research and Technology

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Published by Universitas NU Sidoarjo

ISSN : 24605972 EISSN : 24776165 DOI : -

Chemical Engineering, Chemistry & Bioengineering Engineering Environmental Science Industrial & Manufacturing Engineering

Journal of Research and Technology published since 2015 contains a collection of a selected articles from the results of research and study of literature which is relevant to industrial , chemical, and environment engineering. Target readers of the Journal of Research and Technology are scientists, academics, and practitioners from various fields of industry.

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Articles 10 Documents

Search results for , issue " Vol 2, No 1 (2016)" : 10 Documents clear

ANALISA RISIKO TAHAP PERAWATAN JALAN DALAM PENERAPAN PERFORMANCE BASED CONTRACT PADA PROYEK JALAN DI JAWA TIMUR Prihartanto, Eko
Journal of Research and Technology Vol 2, No 1 (2016)
Publisher : Universitas Nahdlatul Ulama Sidoarjo

Road as the main infrastructure in cross overland to connect starting area to the destination area. The level of damage that occurred after the implementation reduce the road’s service quality. Performance Based Contract (PBC) has stages such as Design, Build, Operation, and Maintenance. PBC is expected to minimize the budget for road construction due to damage that routinely occurs every year. PBC has the maintenance stage to meet the performance who have risk reducing road maintenance after road completion and operation. Risk variables in this study use variables in the maintenance stage from the PBC application in Eastern Java road project. It uses Probability Impact Analysis method to analyze road maintenance risk in PBC application. The results are highest score of risk variable in the maintenance stage as the descriptive analysis references to compare the threat and opportunity in PBC application. Then, it is used to create strategy in order to fulfil dominant risk in the maintenance stage.

PENGARUH POROSITAS PACKING STEEL WOOL TERHADAP PRESSURE DROP DIDALAM PACKED BED COLUMN PADA DISTILASI CAMPURAN ETANOL-AMIL-ALKOHOL-AIR Dhaniswara, Trisna Kumala; Widjaja, Tri; Altway, Ali
Journal of Research and Technology Vol 2, No 1 (2016)
Publisher : Universitas Nahdlatul Ulama Sidoarjo

Inventories of petroleum fuels are increasingly depleted and will someday run out. These shortcomings can be overcome by using alternative fuels, such as ethanol. Based on this, it is necessary to research and development of ethanol as a fuel. One way is with a separation in a packed distillation column. This study aims to assess the mass transfer phenomena that occur in the process of distilling a mixture of ethanol-water-amyl alcohol packed in column. In addition, this study aims to optimize temperature and reflux to obtain the highest levels of ethanol. This research method uses packed bed distillation system with the batch process. Feed used is synthetic ethanol, water, and solvent. Solvent used were amyl alcohol. Doing distillation with heating temperature is maintained. Distillation is done in the packing of stainless steel wool. Research carried out in a batch process with a variable temperature of 79°C; 84°C; 91°C; and porosity packing 20%; 30%; 40%; 50%; 60%; 70%; 80%.

KARAKTERISTIK BIODIESEL DARI MINYAK BIJI RANDU (CEIBA PENTANDRA) PADA REAKTOR BATCH BERPENGADUK BERTEKANAN MENGGUNAKAN KATALIS KOH Erliyanti, Nove Kartika
Journal of Research and Technology Vol 2, No 1 (2016)
Publisher : Universitas Nahdlatul Ulama Sidoarjo

Biodiesel is fuel from plant oils that has been converted into methyil ester with transesterification process. The research was aimed at investigating the influence of KOH concentration and reaction time on the characteristics (density and viscosity) biodiesel at a pressure of 4 bar. The process of making biodiesel in a stirred batch reactor is pressurized, purged nitrogen, and the temperature operation of 60°C. The kapok seed oil used as raw material was 1000, methanol, and KOH (concentration of 0.5; 1.0; 1.5; and 2% oil by weight) were mixed and put into a reactor with a reaction time of 0.25; 0.50; 1.00; and 1.50 hours. Products were analyzed according to ASTM standard. KOH concentration and reaction time has a significantly affected with respect to the density and viscosity of biodiesel. Biodiesel produced in compliance with the ASTM standard. The highest density and viscosity resulting in 0.5% KOH concentration and reaction time of 0.25 hours is equal to 0.8918 g / cm3 and 4.989 cSt.

ANALISA FAKTOR-FAKTOR YANG MEMPENGARUHI KEPUASAN KERJA KARYAWAN DI PT SURYAGITA NUSARAYA DENGAN METODE REGRESI LINIER BERGANDA Musahidin, Fayakun; Suhartini, .
Journal of Research and Technology Vol 2, No 1 (2016)
Publisher : Universitas Nahdlatul Ulama Sidoarjo

PT Suryagita Nusaraya is a company engaged in the field of courier services in Surabaya. Since it is a good company that has qualified employees, it continuously makes efforts for the improvement of the welfare and advancement of employees. Judging from the current phenomena, there are number of employees who violate the rules that have been set by the management of PT Suryagita Nusaraya including: not punctual, often being absence, and leaving the company during working hours. The purpose of this study is to analyze the factors that most affect the job satisfaction of employees of PT Suryagita Nusaraya using multiple linear method. The independent variables used are work (X1), status (X2), boss (X3), colleagues (X4), and promotion (X5), while the dependent variable is employee satisfaction (Y). Here, the method used in this research is multiple linear regression. Based on statistical data analysis, the indicators in this study are valid and are reliable variables. In the classic assumption test, the regression of multicolinierity free model, there is no heteroskedastisitas for the data and it has normal distribution. The sequence of the most influential variables individually are as follows: status (X1) with a regression coefficient of 1.095, boss (X2) with a regression coefficient of 0.644, job (X3) with a regression coefficient of 0.084, and colleagues (X4) with a regression coefficient of 0.019, while the lowest influential variable is sale (X5) with a regression coefficient of - 0.066.

UJI ANTIBAKTERI EKSTRAK JAHE MERAH Zingiber officinale var. Rubrum TERHADAP Staphylococcus aureus DAN Escherichia coli Handrianto, Prasetyo
Journal of Research and Technology Vol 2, No 1 (2016)
Publisher : Universitas Nahdlatul Ulama Sidoarjo

The study of inhibition testing antibacterial extract Fresh Red Ginger Zingiber officinale var. Rubrum Against Staphylococcus aureus, and Escherichia coliguna to determine the source of antibacterial natural products, especially red ginger has been conducted. Anti-bacterial inhibition test using disc diffusion method with fresh red ginger rhizome material. The study was conducted using concentrations: 0%, 20%, 40%, 60%, 80%, and 100%. Concentration of 0% was used as a negative control. The data obtained will be tested statistically using ANOVA with sig. 0.05. The results showed that the extraction of fresh red ginger (Zingiber officinale var. Rubrum) at a concentration of 100% has the highest inhibitory region to S. aureus (15.83 mm) and E. coli (14:22 mm). It can be concluded that the extract of fresh red ginger Zingiber officinale var. Rubrum at a concentration of 100% has a moderate level of inhibition to S. aureus and weak level of inhibition to E. coli.

ANALISIS PENINGKATAN KUALITAS PELAYANAN MAHASISWA MAGISTER MANAJEMEN TEKNOLOGI ITS SURABAYA DENGAN METODE SERVQUAL DAN IMPORTANCE PERFORMANCE ANALYSIS (IPA) Noer, Lissa Rosdiana
Journal of Research and Technology Vol 2, No 1 (2016)
Publisher : Universitas Nahdlatul Ulama Sidoarjo

MMT-ITS Study Program is a program that has orientations in developing and implementing Technology Management science. This program has some fields and they are Industrial Management, Project Management, and Information Technology Management. Service quality can be known by using Service Quality Methods, they are: (i) tangible, (ii) reliability, (iii) responsiveness, (iv) assurance, and (v) emphaty. The assesment of service levels use questionnaire and this research propose to use Gap 5. Based on the integration result of Servqual Method and Importance Performance Analysis (IPA), MMT-ITS students’ satisfaction will be reached by improving some variables, they are: motorcycle parking space, availability of cleaning service, the ease of delivering facilities and infrastructures complaints, the efficiency of security guard (a main priority of quadrant I). Maintaining the achievement of quadrant II includes: quick in delivering academic information, satisfying literatures of books/references/journals, good lecture materials comprehension, online journal can be accessed easily and fast, any replacement class, fast response to students’ complaints, the ease of academic students’ complaints, the good conditions of tables and chairs, clean classroom, employees willing to give lectures information, clarity in giving information related to college payment and another activities, guarantee of students’ data confidentiality, bright light in the room, safe feeling in students, polite and kind employees, room temperature which is cool. While, another very important variables are fast wifi/internet facility and clean toilet (quadrant IV that has high satisfaction level).

STUDI EKSPERIMENTAL FALLING FILM EVAPORATOR PADA EVAPORASI NIRA KENTAL Fitri, Medya Ayunda; Suhadi, Suhadi; Altway, Ali; Susianto, Susianto
Journal of Research and Technology Vol 2, No 1 (2016)
Publisher : Universitas Nahdlatul Ulama Sidoarjo

Falling film evaporator is a constructed equipment for concentrating dilute solution that are sensitive to heat flowing form a thin film. This research aims to study the evaporation of cane juice concentrated with air flow on falling film evaporator and knowing evaporation rate occured in falling film evaporator used. In the process, cane juice from plant pumped to the falling film evaporator that used in this experiment. This research used concentrated cane juice and air flow rate for variables of this experiment. Cane juice flow from top of evaporator through distributor to form thin film and air flow from the bottom of evaporator. After that, temperatur of pipe wall, inlet and outlet temperature of cane juice and air were measured. This experiment concluded that the highest concentration of outlet solution is 59 brix for liquid flow rate 154 l/h and air flow rate 10 m3/h, and the other hand inlet solution concentration 51 brix. Optimum evaporation rate is 35 kg/m2.h for 51 brix and air flow rate 10 m3/h.

PRODUKSI BIODIESEL DARI MINYAK JELANTAH MENGGUNAKAN KATALIS KALSIUM OKSIDA Rahkadima, Yulia Tri; Abdi, Putri
Journal of Research and Technology Vol 2, No 1 (2016)
Publisher : Universitas Nahdlatul Ulama Sidoarjo

The transesterification reaction has performed to convert waste cooking oils into biodiesel with assistant of heterogen catalyst of calcium oxide using reactor in a laboratory . The reaction was performed in two stages that is the esterification followed transesterification reaction. The aim of research is to study the effect of temperature and time reaction on viscosity and biodiesel yield. The results showed that obtained biodiesel had viscosity value in accordance with SNI 04-7182-2006 about diesel-fuel viscosity. At lower temperature (40, 45, and 50°C), the longer reaction time could lead to the increasing of biodiesel yield. Meanwhile, at higher temperature reaction (55°C and 60°C) the longer reaction time could reduce biodiesel yield. The highest biodiesel yield was obtained at following reaction condition: temperature reaction 50°C, 6 hours reaction time, ratio oil:MeOH = 1:48 molar ratio, % wt CaO = 8% to weight of waste cooking oil.

REKOMENDASI PENINGKATAN PEMANFAATAN LAYANAN PERSALINAN NORMAL DI KLINIK PRATAMA RAWAT INAP RUMAH BERSALIN GRATIS RUMAH ZAKAT Disrinama, Am Maisarah
Journal of Research and Technology Vol 2, No 1 (2016)
Publisher : Universitas Nahdlatul Ulama Sidoarjo

Intention of buying product or service is very important thing on purchasing stage. It depends on alternatives evaluation process on pre purchasing stage. K4 Pregnant woman has to decide the place to birth. The objective of this study is to create recommendation to increase Normal Labour on K4 Pregnant Women using Brand Image Analysis dan Three Stage Model of Service Consumption in Klinik Pratama Rawat Inap Rumah Bersalin Gratis Rumah Zakat. This research uses observasional analytic and prospective cohort. The primary data is collected two times, before and after delivery process. There are 54 respondents, whether all of K4 pregnant women with pregnancy age are more than 32 weeks. The samples were taken from March to August 2014. The result shows that some characteristics have relationship with purchasing decision. The recommendations consist of product, place, promotion, people, process, and physical evidence. Overall, the head of branch needs to fix the service for mother and child evaluation soon.

GEOKIMIA ORGANIK FRAKSI AROMATIK LIGHT OIL PRODUK PENCAIRAN BATUBARA AREA (PIT) BINTANG SANGATTA KALIMANTAN TIMUR Wijaya, Lukman Sugiharto; Burhan, R.Y. Perry
Journal of Research and Technology Vol 2, No 1 (2016)
Publisher : Universitas Nahdlatul Ulama Sidoarjo

Character geochemical of Coal in area (pit) Stars Sangatta, East Kalimantan shows that the coal is classified as steam coal with thermal maturity and have low calories (5768 kcal/kg). The coal is melted in the 1L autoclave for 60 minutes at a temperature of 450°C and a pressure of 12 MPa to obtain a product slurry. Fractionation of slurry product based on boiling point using a vacum distillation apparatus 10 mmHg. Fractions obtained include naphtha, light oil, middle oil, heavy oil and coal liquid bottom. Data show that the weight percentage of the product melting fraction is dominated by heavy oil and coal liquid bottom with percentage of total> 50%. Fraction of light oil in the fractionation further by TLC and the eluent n-hexane in order to obtain an aromatic fraction. The composition of the aromatic hydrocarbon fraction light oil products were characterized using gas chromatography mass spectrophotometer (GC-MS). the identification shows that derivative of kadalen compounds, that is compounds norkadalen (C14H16) which is the fraction of oil that can be potentially as diesel fuel.

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Jawa timur

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Home Page

OAI Link

Editorial Team

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Reviewer

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Contact Name Muchammad Tamyiz

Contact Email muchammad_tamyiz@yahoo.com

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Location Kab. sidoarjo, Jawa timur INDONESIA

Abstract

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Abstract

Contact Name
Muchammad Tamyiz

Contact Email
muchammad_tamyiz@yahoo.com

Phone
-

Journal Mail Official
muchammad_tamyiz@yahoo.com

Editorial Address
-

Location
Kab. sidoarjo,

Jawa timur

INDONESIA