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INDONESIA
Journal of Research and Technology
Published by Universitas NU Sidoarjo
ISSN : 24605972     EISSN : 24776165     DOI : -
Core Subject : Social, Engineering,
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.
Arjuna Subject : -
Articles 454 Documents
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Husband's Support for Regularity of Antenatal Care (ANC) (In the village polyclinic in Drenges Village, Sugihwaras District Bojonegoro Regency) Fajrin, Fitriana Ikhtiarinawati
Journal of Research and Technology Vol. 5 No. 1 (2019): JRT Volume 5 No 1 Jun 2019
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/jrt.v5i1.442

Abstract

This study aims to determine the support of the husband, know the regularity of antenatal care and analyse the relationship of husband's support for the regularity of antenatal care. This research is a descriptive analytic study with Cross Sectional approach. Sources of data were obtained from all pregnant women who examined at the village polyclinic in Drenges Village, Bojonegoro Regency on November 1, 2017 - May 1, 2018 with a population of 28 people. The sampling technique uses Total Sampling. Data collection techniques use primary data and secondary data. Primary data in the form of data about husband's support for antenatal care obtained from the questionnaire, while secondary data in the form of data about the regularity of antenatal care obtained from medical records and MCH books, then the data were analyzed descriptively and by statistical analysis using SPSS 22 correlation test. The results of this study indicate that the majority of husbands' support is lacking as many as 19 respondents (68%), the majority of respondents do not regularly conduct Antenatal Care examinations as many as 17 respondents (61%), the majority of respondents who received husband’s support regularly conducted Antenatal Care, namely 6 respondents (67%), and respondents who lacked husband's support, the majority of them did not regularly conduct Antenatal Care, namely 14 respondents (74%). From the results of the correlation test, the value of sig = 0,000 means that H0 is rejected and H1 is accepted. From the results of the correlation test also obtained a correlation coefficient of 0.8 which means that the support of the husband with the ANC regularity is very strong. The conclusions from this study are the relationship between husband's support and the regularity of the ANC with a very strong relationship.
PENURUNAN BIOCHEMICAL OXYGEN DEMAND (BOD) DAN TOTAL SUSPENDED SOLIDS (TSS) PADA PENGOLAHAN LIMBAH CAIR DOMESTIK DENGAN PROSES ANAEROBIK BIOFILTER Ayu Pramita; Eka Dyah Puspita
Journal of Research and Technology Vol. 5 No. 1 (2019): JRT Volume 5 No 1 Jun 2019
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/jrt.v5i1.443

Abstract

Domestic wastewater in the culinary area is waste water produced from several restaurants. The problem of liquid waste needs to get serious attention, because it has complex characteristics and the remaining results of these activities can cause the volume of wastewater with a high contaminant load that flows continuously over a long period of time. One way to manage the environment is through physical processing, namely by pre-treatment of sedimentation and biological treatment by biofilter anaerobic processes. Anaerobic biofilter is a biological treatment, which uses media as a place to grow and develop microorganisms, with no oxygen in the reactor. The parameters in liquid waste processing consist of three, namely physical parameters, chemical parameters and biological parameters. In the method of combating liquid waste here uses chemical parameters, namely BOD and TSS. Where BOD (Biochemical Oxygen Demand ) is the number of milligrams of oxygen needed by aerobic microbes to decompose karon organic matter in 1 L of water for 5 days at a temperature of 20˚C ±1˚C. Whereas for TSS (Total Suspended Solid) as the residue from total solids held by a filter with a particle size of maximum 2μm or greater than the size of colloidal particles, which include TSS are mud, clay, metal oxides, sulfides, algae, bacteria, and fungi . The aim of this research is that the liquid waste from the activity can be reused as clean water by anaerobic biofilter method using BOD and TSS parameters. The variables used are operational time. Reactor I and reactor II contain media arranged from the bottom up, namely rock fragments, gravel, shells and gauze. The operational time variations used are 0 hours as t0 or the first time the waste exits the reactor, and the time is 2 hours, 4 hours, 6 hours, and 8 hours is a periodic observation of operational time. The results showed that anaerobic biofilter has the ability to reduce the concentration of BOD (Biological Oxygen Demand) and TSS (Total Suspended Solid). Based on the Regulation of the Minister of Environment and Forestry of the Republic of Indonesia Number P.68 / Menlhk / Setjen / Kum.1 / 8/2016 concerning Domestic Waste Water Quality Standards, the characteristics of wastewater are obtained before treatment (pretreatment) which is 28- 31 ° C; pH 9,3-10; BOD 30 mg / L; and TSS 29 mg / L. Decreasing the initial state in reactor I for BOD is 25 mg / L. Whereas for the decrease in TSS is 16 mg / L. The results showed that anaerobic biofilter with pumice, gravel and clam shell media had the ability to reduce BOD and TSS concentrations significantly. The percentage decrease in concentration in reactor I was greater than that of reactor II, with an operational time of 6 hours for BOD allowance of 73,54%. While the operational time of 8 hours for TSS is 81,39%.
PENGARUH KEBISINGAN DAN IKLIM KERJA TERHADAP STRES KERJA DI PABRIK PRODUKSI MAKANAN HEWAN Wiediartini; Denny Dermawan
Journal of Research and Technology Vol. 5 No. 1 (2019): JRT Volume 5 No 1 Jun 2019
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/jrt.v5i1.444

Abstract

Noise and heat have become a problem for a worker in the animal food processing company. The aim of this study was to analyze the influence of noise and heat to stress. The result showed a relationship between noise, heat, and stress (sig 0,003<0,05). A moderate correlation between noise, heat, and stress was also observed (r=0,561). No differences between the two groups of age, gender, and status were found with t-test. Reducing noise and heat were necessary to be executed through engineering and administrative control. There was no need to differ the treatment to control the stress between a group of gender, age, and status.
MEMBANDINGKAN REGRESI 4PL DAN LINIER FIT UNTUK VERIFIKASI HORMON 17β-ESTRADIOL MENGGUNAKAN METODE ELISA Arroofita Ani Sandiya; Sudjarwo; Ashon Sa’adi
Journal of Research and Technology Vol. 5 No. 1 (2019): JRT Volume 5 No 1 Jun 2019
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/jrt.v5i1.445

Abstract

One solution for infertile couples to get offspring is IVF, one of the stages is a HOT procedure. On the stage there is an increasing in steroid hormone levels (estrogen) as a result of ovarian follicles development. The 17β-estradiol hormone was chosen to be verified because it can be used as a marker or marker to show the maturity follicle. Linear and logistic regression are the two most commonly used in curve making models for ELISA sandwich immunoassays. Although linear regression may be useful when analyzing samples included in the linear part of the analyte response curve, logistic regression is the preferred for multiplex immunoassays. Verification of 17β estradiol hormone regression results using linear fit obtained the value of r=0.952 while the regression value used 4PL obtained result r=0.998. But the results shown in the verification of the 17β estradiol hormone good, this were evidenced by using of SPSS software. The value of F obtained was 78.712, where the value was greater than the value of F table (6.61) which means that the value of independent variable (concentration) on value of the dependent variable (optical density value). The linearity values ​​obtained through verification using the 4PL model indicates that the linearity of this method was better based on linear regression.
VERIFIKASI LINIERITAS KURVA BAKU TESTOSTERON MENGGUNAKAN METODE ELISA (ENZYME-LINKED IMMUNOSORBENT ASSAY) Muhammad Arif Hanny Ferry Fernanda; Ashon Sa’adi; Sudjarwo
Journal of Research and Technology Vol. 5 No. 1 (2019): JRT Volume 5 No 1 Jun 2019
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/jrt.v5i1.446

Abstract

Enzyme-Linked Immunosorbent Assay (ELISA) is one of the quantitative analysis methods that is often used to determine the levels of active compounds in biological samples. In this study we will verify the method of determining testosterone active compounds in blood and urine samples of female patients who have Polycystic Ovary Syndrome (PCOS) using the Human Testosterone ELISA Kit. Before conducting testosterone levels using ELISA, it is necessary to verify the linearity of the standard curve first to determine the effect of testosterone standard levels on the analyte response in the form of optical density. The linearity verification of the standard testosterone curve was calculated using linear regression calculations with determinant coefficient result was 0.978 and a value of α = 0.05. While for testing by using 4 parameter logistic (4PL) coefficient created, 0.999. Based on these results it can be concluded that the testosterone standard level has a significant influence on the response of optical density analytes.
ISOLASI FITOSTEROL DARI BAWANG MERAH (Allium cepa L.) Ahmad Musonnifin Aziz; Farikha Alfi Syahriyah; Ahmad Ihya’ Ulumuddin; Qurrota A’yuni
Journal of Research and Technology Vol. 5 No. 1 (2019): JRT Volume 5 No 1 Jun 2019
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/jrt.v5i1.447

Abstract

Shallot is one of the kitchen spices that is often used by the community. Shallot contains several useful compounds and one of them is phytosterol. Along with the development of science and technology, phytosterol can be used to reduce blood cholesterol levels and prevent heart disease, so it is very beneficial for human health. In this study, phytosterol compounds were identified and isolated. The dried onion was then pureed and sifted to 100 mesh. The sieved powder was then extracted by reflux extraction method within 6 hours. The results of the extract were then isolated by column chromatography and identified by Thin Layer Chromatography (TLC). The TLC test used -sitosterol as a standard and anisaldehyde reagent as a stain appearance. The TLC plate which had stained appearance was then analyzed using the TLC Scanner method. The results of the TLC test showed that the extract of positive red onion was purple and contained fitosterol. The results of the TLC Scanner also show that the peak and spectrum of the samples were the same as the standard -sitosterol and positively contained fitosterol.
Optimization of Ultrasound-Assisted Extraction Parameters from Indigofera Tinctoria L using Response Surface Methodology Achmad Qodim Syafaatullah; Variyana, Yeni; Ni’matur Rohmah; Iid Mufaidah; Ayu Qurota A’yun
Journal of Research and Technology Vol. 7 No. 2 (2021): JRT Volume 7 No 2 Des 2021
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/jrt.v7i2.450

Abstract

Nowadays, the natural dyes are commonly used in textile industry. One of them is Indigofera tinctoria L leaves extracting natural dyes that produce blue color and have various potential utilization. However, the extraction time required usually takes a long time using conventional extraction. Thus, some researches reported that ultrasound-assisted extraction can accelerate and increase the extraction yield. The mechanism of ultrasonography is able to assist matrix cell rupture through the ultrasound cavitation. The present research aimed to study and to evaluate the Indigofera tinctoria L dye using ultrasound-assisted extraction. Response surface methodology (RSM) in conjunction with box-behnken design (BBD) was applied to optimize and to analyze the extraction conditions. The independent factors were ratio feed to solvent (0.02-0.1 g/ml), ultrasound temperature (50-60oC), and extraction time (50-90 minutes). Further, feed to solvent ratio was the most significant factor of extraction process in comparison with temperature and extraction time. The optimum extraction conditions were 58oC, 0.02 g/ml, and 50 minutes. The predicted model obtained was 6.025% which close to the actual data (5.75%). Moreover, the extract dye compounds were analyzed by FTIR test and the result was 64.07% for presence of Indigo dye. Therefore, the natural dyes can be alternative and sustainable dye as environmentally friendly
Redesain Lingkungan Kerja dengan Pendekatan Mikroklimatik Ergonomi untuk Menurunkan Kelelahan Kerja dan Meningkatkan Output Produksi di Masa Pandemic Covid 19 Sajiyo, Sajiyo; Abdulrahim, Muslimin; Tasya Febrinda Ardika Putri; Sharhani Qisthinaningtyas
Journal of Research and Technology Vol. 8 No. 1 (2022): JRT Volume 8 No 1 Juni 2022
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/jrt.v8i1.451

Abstract

Fatigue is a system of protection against physical damage due to excessive activity, but is sometimes considered a negative factor, which affects work efficiency. Fatigue has an impact on performance. If the level of fatigue is high, it will cause a decrease in productivity, so that the production output target is not achieved. Work productivity is influenced by ergonomic working conditions. An ergonomic work environment is indicated by microclimatic conditions that comply with ergonomic standards. To create an ergonomic work environment, it is necessary to pay attention to microclimate which include: air temperature, air humidity, air circulation, and lighting (light intensity). For this reason, it is necessary to conduct research on "Redesigning the Work Environment with a Microclimate Ergonomics Approach to Reduce Work Fatigue and Increase Production Output During the Covid-19 Pandemic Period. The results of this study are the comparison of the results of microclimate measurements, measurements of worker conditions, measurement of the impact on the workspace in the old and new workspaces. So that the results of this study can help cigarette entrepreneurs, especially the home industry (home industry) in an effort to reduce work fatigue, and increase production output.
Analisa Variabel Kunci Pengembangan Infrastrukur Pariwisata di Wilayah Utara Perbatasan Indonesia (Studi Kasus: Kabupaten Nunukan) Prihartanto, Eko; Efraim Bavo Priyana
Journal of Research and Technology Vol. 8 No. 1 (2022): JRT Volume 8 No 1 Juni 2022
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/jrt.v8i1.457

Abstract

The province of North Kalimantan has a direct boundary with the eastern part of Malaysia, including the Nunukan Regency with the Sabah Region. Nunukan Regency has a number of attractive tourism places for tourists to visit, but they are still minimal in the availability of supporting infrastructure, so this research was conducted to obtain a model to support tourism infrastructure. The methodology used in this research is descriptive qualitative, by obtaining data from questionnaires and interviews with respondents from government agencies, travel business actors, to communities around tourist attractions. The object of this research is a tourist spot in Nunukan Regency, then an analysis is carried out using Interpretive Structural Modeling (ISM). The result of this research is that a model is obtained that provides the key variables that place the variable in the top position in the model. The ISM model obtained places the availability of the types of facilities that have been provided for a place to stay for visitors. This is not without reason because from interviews it was found that tourists want a place to stay overnight to be able to enjoy the natural atmosphere with their family. From the research it was also found that infrastructure remains a priority in supporting tourism objects.  
Analisis Pelaksanaan Pembangunan TPA Kabupaten Banyumas Akibat Kelongsoran dan Perubahan Desain Perencanaan Agus Bambang Siswanto; Mukhamad Afif Salim; Hari Setijo Pudjihardjo; Novike Dian Utami
Journal of Research and Technology Vol. 7 No. 2 (2021): JRT Volume 7 No 2 Des 2021
Publisher : 2477 - 6165

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55732/jrt.v7i2.458

Abstract

Project is something with constrains can affect the time or duration of the work, slope slides and building redesigns that have an impact on delays in project implementation. Delays that occur can result in the presence of less work and work items that cause work to experience delays and increase the total cost of implementing the project or it can be said that the project suffers a loss. In this case, good time and coast management needs, can be solved properly. This challenge of a project is main to achieve the goals project within the constraints which generally the scope, schedule and budget of the project. Many methods used in scheduling, for expected scheduling planning. This research to get a logical schedule by rescheduling in accordance that it is hoped no more delays. Analytic research need of data such as schedules and budgeting directly the required data to the relevant parts, evaluating the schedule, followed by a new schedules with Microsoft Excel, and finally perform cost calculations with a balanced budget system. The result of this research the rescheduling is 440 days with the total RAB after rescheduling is Rp. 41,286,988,000,-, equal to the total cost before rescheduling, because of the work added and less and carried out a balanced budget.

Page 37 of 46 | Total Record : 454

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