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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 446 Documents

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DEPOLIMERISASI PET PASCA KONSUMSI MELALUI GLIKOLISIS DENGAN KATALIS Rahmayanti, Ardhana
Journal of Research and Technology Vol 1, No 01 (2015)
Publisher : Universitas Nahdlatul Ulama Sidoarjo

Polyethylene terephthalate (PET) is a polyester which is widely used as a container or packaging material, especially mineral water and soft drinks. Recycling is necessary to overcome the post-consumer PET waste PET difficult because degraded naturally. Chemical recycling is an appropriate method for depolymerisation. Glycolysis is the method that is often used as the process was easy. Optimization parameters of glycolysis on the rate of reaction in the efforts to improve the products of glycolysis has been done as the use of catalysts. Metal acetate catalysts such as zinc acetate is a catalyst which shows good activity in the reactions of glycolysis, but the catalyst is non-biodegradable and toxic. The metal oxide catalysts are also many well developed but these catalysts are toxic, corrosive and can cause severe pollution. More environmentally friendly catalysts such as sodium salt today began much developed to minimize the impact to the environment.

DESAIN DAN KARAKTERISTIK PERMUKAAN KOBALT OKSIDA PADA PENDUKUNG KATALIS A'yuni, Qurrota
Journal of Research and Technology Vol 3, No 1 (2017)
Publisher : Universitas Nahdlatul Ulama Sidoarjo

Material surface characteristics are the main criteria to be considered in catalyst design. The surface area and catalyst porosity determine activity and selectivity in catalytic reactions. In this research, synthesis of cobalt oxide, calcium fluoride and calcium fluoride cobalt oxide has been done. Characterization of solid sufaces is analyzed by using Nitrogen Gas Adsorption Method. The surface area of solids is analyzed by using SBET and SBJH Methods. Identification of mesoporous both qualitative and quantitative is analyzed by using BJH Method. The result of synthetic solid shows the pattern of isotherm adsorption type IV which is typical for mesoporous material. Surface measurements show the presence of cobalt oxide on a catalyst support marked by decreasing surface area, pore size and pore volume of catalyst support material.

PENGENDALIAN PERSEDIAAN MATERIAL UNTUK MEMENUHI SISTEM PRODUKSI MAKE TO STOCK MENGGUNAKAN MATERIAL REQUIREMENT PLANNING (MRP) Rahmawati, Nur
Journal of Research and Technology Vol 4, No 1 (2018)
Publisher : Universitas Nahdlatul Ulama Sidoarjo

CV. Dua Putra is a manufacturing company that categorized as a low medium enterprice. This company produces shoes such as futsal shoes, running shoes, casual, and also kids shoes. This company still using traditional inventory planning where component of their product will be bought when the stock is out. As a consequence there often be exceed and also run out of inventory in the storage. This research is aimed to plan material inventory for Airpro futsal on CV. Dua Putra. The method that is used in this reseach is Material Requirement Planning (MRP). Based on MRP result, the time required to complete demand in september is 34 days, 34 days for demand in October, and 23 days for demand in November.

VEHICLE ROUTING PROBLEM ON JUICE DISTRIBUTION USING NEAREST NEIGHBOR METHOD Tamyiz, Muchammad; Prasetyo, Waluyo
Journal of Research and Technology Vol 4, No 1 (2018)
Publisher : Universitas Nahdlatul Ulama Sidoarjo

The problem of product distribution becomes an important topic in a company's transportation system. PT Amanah Prima Indonesia (API) is a national-scale company engaged in the production of juice drinks. With the number of consumers scattered in the Semarang area, it is necessary a solution in the distribution of products in order to obtain operational efficiency. The method used is Nearest Neighborhod Algorithm. The results obtained are: (a) Distance savings of 144.20 Km or 40.06%, (b) Product distribution time can be reduced for 5.15 hours or 30.31%, (c) Fuel costs used obtained cost savings of Rp.108.150, - or equal to 40.06%, (d) Expenses for driver and companion cost is no difference of Rp.600.000, -, and (f) The total cost of distribution is obtained savings of Rp. 108,150 or 12.43%.

NUTRITIONAL STATUS OF PREGNANT WOMEN IN RELATION TO THE PREVALENCE OF INFANT LOW BIRTH WEIGHT (LBW) (Case Study in Sugihwaras, Bojonegoro during 2017) Fajrin, Fitriana Ikhtiarinawati
Journal of Research and Technology Vol 4, No 1 (2018)
Publisher : Universitas Nahdlatul Ulama Sidoarjo

Nutritional status is an important thing to consider during pregnancy, as it will significantly affect the development and growth of the fetus. Hence, maternalnutritional factors both before and during pregnancy account for the quality of newborn. Nutritional status of the pregnant women is assessed using mid-upper arm circumference determination, body weighing, and laboratory test. Undernutrition status in pregnant women needs immediate treatment due to the risk and complication for both mother and fetus such as anemia, bleeding, mother's weight does not grow normally, and infectious diseases. Furthermore, it may result in difficult and prolonged labor, preterm delivery, bleeding after delivery, and eventually cesarean delivery tends to increase. While the impact of malnutrition in pregnant women to the fetus that can affect the process of fetal growth and can lead to miscarriage, abortion, stillbirth, neonatal death, congenital defects, anemia, asphyxia intrapartum (dead in the uterus), infant low birth weight (LBW) (Fajrin, 2017). However, there are many pregnant women who have nutritional problems especially undernutrition or known as Chronic Energy Deficiency (CED). The results of the National Socio-Economic Survey (SUSENAS) 1999 showed that there were 27.6% of CED pregnant women is associated with LBW (Lubis, 2003 in Hanifa, 2009). Then, it also can cause premature and immatureLBW (Kusparlina, 2016).MostLBW infants in developing countries are affected by intrauterine growth restriction(IUGR)due to malnutrition, anemia, malaria and sexually transmitted disease (STD) before conception or during pregnancy. It was reported in 2016 that the cases of LBW were 879 infants (4,9%) from a total of 17,041 live births. While there was no significant difference between male and female infants were 429 out of 8,834 and 450 out of 8,207 respectively.Moreover, it was found in Bojonegorothat LBW is the highest cause of infant mortality compared to other causes such as asphyxia, birth trauma, infection, congenital abnormalities and others. Some risk factors that exist in pregnant women who will give birth to babies with LBW are pregnant women with CED, anemia, hypertension, and preeclampsia (DINKESKABBojonegoro, 2016).Infant mortality due to LBWslightly increased from 40%in 2015 to 41.48% in the following year then it is still increasing from year to year (DINKESKABBojonegoro, 2016).To our knowledge, there are no available data of the cause of LBW in Bojonegoro especially in the matter of the nutritional status of the pregnant women. So that the objective of the present study was to determine relationship between the nutritional status of the pregnant women and the prevalence of LBW.

KOROSI BAJA KARBON API 5L GRADE B SEBAGAI FLOWLINE PRODUKSI GAS ALAM Setiawan, Adhi; Fajrin, Alfinura; Munir, M. Miftahul; Ari, M.
Journal of Research and Technology Vol 4, No 1 (2018)
Publisher : Universitas Nahdlatul Ulama Sidoarjo

Corrosion that occurs in a gas flowline is a serious problem because it can cause leaks that lead to material loss and environmental pollution. The aims of this research were to analyze the corrosion occurred in gas flowline of carbon steel 5l Grade B and the effect of inhibitor TIC-8002 GCI to the corrosion rate of metal. This research was conducted using SEM-EDX to analyze and produce various types of metals and corrosion crust. Metals corrosion test and the effect of inhibitors on the corrosion rate of metals were carried out by linear polarization methods. The result of SEM-EDX showed that inner pipe surface occurred pitting corrosion caused by dissolved chloride ions in the electrolite that flows in the pipeline. The result of XRD showed that corrosion products of carbon steel were Fe2O3 and FeOOH. The result of linear polarization showed that the corrosion rate of steel about 0.642 mmy without using inhibitor. The addition of an inhibitor can reduce the corrosion rate in carbon steel. The increase in inhibitor concentration from 10 ppm to 50 ppm can reduce the corrosion rate from 0.633 mmy to 0.394 mmy along with an increase in inhibition efficiency from 1.32% to 38.6%.

DEGRADASI VITAMIN C DALAM JUS BUAH DENGAN PENAMBAHAN SUKROSA DAN LAMA WAKTU KONSUMSI Devianti, Vika Ayu; Wardhani, Ratih Kusuma
Journal of Research and Technology Vol 4, No 1 (2018)
Publisher : Universitas Nahdlatul Ulama Sidoarjo

The degradation of Vitamin C in orange and tomato juice with sucrose addition and were storaged for 0, 30, and 60 minutes at room temperature were investigated. The level of vitamin C in juice was ensured by spectrophotometric method. The result indicated that vitamin C in sample with sucrose addition, decreased by about 0,41% (orange juice); 0,47% (tomato juice) after 30 minutes of storage; and 0,82% (orange juice); 1,19% (tomato juice) after 60 minutes of storage; while vitamin C in sample without sucrose addition, decreased by about 1,2% (orange juice); 2,12% (tomato juice) for 30 minutes of storage; and 2,45% (orange juice); 2,89% (tomato juice) for 60 minutes of storage. In conclusion, sugar addition and storage time could affect the degradation of vitamin C.

AKTIVITAS ANTIBAKTERI DAUN PEPAYA (Carica Pepaya) MENGGUNAKAN PELARUT ETANOL TERHADAP BAKTERI Salmonella thypi Sudarwati, Tri Puji Lestari
Journal of Research and Technology Vol 4, No 1 (2018)
Publisher : Universitas Nahdlatul Ulama Sidoarjo

Typhoid fever is one of the health problems that often occur in people of Indonesia. The spreads of this desease are through contaminated food. Thyphoid fever could be caused by bacterials infection, one of the bactery is Salmonella typhi. One of solution o cure the infection is by using antibacterial derived from plants or herbs called traditional medicine. This medicine is chosen and preffered because it has relatively small side effects. Carica papaya L. is the most kind of plant which is learnt for the function as antibacterial. This study aims to determine the concentration effects of papaya leaf extract to the inhibition zone of Salmonella typhi bacteria. The method to determine the concentration effect of papaya leaf extract is a paper disc difussion. The results of this study at a concentration of 20 μg/ml, 40 μg/ml, 60 μg/ml, 80 μg/ml and 100 μg/ml indicate inhibiton zone in the category of moderate.

UJI AKTIVITAS EKSTRAK AIR DESTILASIPADA JAMUR LINGZHI (Ganoderma lucidum)DENGAN MENGGUNAKANMETODE SOXHLET TERHADAP Proteus sp Handrianto, Prasetyo
Journal of Research and Technology Vol 4, No 1 (2018)
Publisher : Universitas Nahdlatul Ulama Sidoarjo

Infectious diseases health problem in developing countries such as in Indonesia one of them is Urinary Tract Infection (ISK). The cause of ISK is Proteus sp. This bacteria is one of the gram-negative causes of urinary tract infection (ISK). Urinary tract infections caused by Proteus sp are persistent, difficult to treat and can be died. Currently one of the natural ingredients known of the antimicrobial drug is the lingzhi mushroom (Ganoderma lucidum). The purpose of this study was to find out whether the concentration of lingzhi mushroom extract (Ganoderma lucidum)effect inhibition zone on bacteria Proteus sp. This anti-bacterial inhibitory test using disc diffusion method. The study was conducted with 6 replication and five concentrations is 20%, 40%, 60%, 80%, and 100%. The lingzhi mushroom (Ganoderma lucidum) extract using soxhlet method with distilled water solvent.Inhibition zone values at concentrations of 100 μg / ml were averaged 10.33 mm, 80 μg / ml of 9.8 mm, 60 μg / ml of 9.4 mm, 40 μg / ml of 8.2 mm, and 20 μg / ml of 8.03 mm. The average result is done by Anova One Way test obtained by result of value of sig, which means significant <0,05 then H0 there is no inhibition zone influence (rejected) and H1 there is inhibit zone effect (accepted). The LSD test results showed that the concentration of 40 μg/ml was significantly different with 60, 80, 100 μg/ml but not significantly different with the concentration of 20 μg/ml. The conclusion of this research is lingzhi mushrooom (Ganoderma lucidum)water ekstract have positive effect on proteus sp inhibition zone.

PERBAIKAN FASILITAS KERJA UNTUK MENGURANGI PEMBEBANAN OTOT STATIS PEKERJA DI BATIK SAQINA TAMIANG Yusnawati, Yusnawati; Handayani, Nurlaila
Journal of Research and Technology Vol 4, No 1 (2018)
Publisher : Universitas Nahdlatul Ulama Sidoarjo

Batik Saqina Tamiang is one of the batik craftsmen in Bandar Khalifah Village, Aceh Tamiang Regency, the batik produced is generally patterned in Aceh. The production system at Batik Saqina Tamiang is a job order and make to stock. Batik work is done manually by the workers. The results of the initial survey found complaints of static muscle loading on the body parts of the workers which caused the production lead time to be longer. This complaint arises because the worker's posture is not ergonomic when making batik. This study aims to reduce static muscle loading through the design of work facilities. The research method used in this research is descriptive, while the steps in this study are conducting field surveys and literature studies related to static muscle loading. Then do the questionnaire distribution on the bodybody map to find out the complaints felt by the workers during their work. The next step is to assess the workers' body posture using the rapid entire body assessment (REBA) method and measure the anthropometric data of the workers that will be used in the design of work facilities and then implement the work facilities that have been designed. the pain of the worker from being very ill becomes a bit painful, which occurs in the neck, shoulders and wrist.

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Muchammad Tamyiz

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Jawa timur

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Home Page

OAI Link

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Contact Name Muchammad Tamyiz

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Abstract

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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