cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Tangguh Okta Wibowo
Contact Email
teknosains@ugm.ac.id
Phone
+628995674422
Journal Mail Official
teknosains@ugm.ac.id
Editorial Address
Gedung Lengkung, Unit 1, Lantai 2, Sayap Timur Sekolah Pascasarjana Universitas Gadjah Mada Jalan Teknika Utara, Pogung, Sleman- Yogyakarta Telp. (0274-564239 extc. 207)
Location
Kab. sleman,
Daerah istimewa yogyakarta
INDONESIA
Jurnal Teknosains
Published by Universitas Gadjah Mada
ISSN : 20896131     EISSN : 24431311     DOI : https://doi.org/10.22146/teknosains.xxxx
Core Subject : Science, Engineering,
Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Industrial & Manufacturing Engineering Mechanical Engineering
Jurnal Teknosains is a peer-reviewed journal which began publication in 2011, and published each semester in June and December. It is a series of scientific publications in engineering, science and technology area. Jurnal Teknosains aims to encourage research in Science and Technology studies. Topics addressed within the journal include but not limited to: Engineering, which is divided into several topics: Mechanical Engineering, Industrial Engineering, Biomedical Engineering, Chemical Engineering, Nuclear and Physical Engineering, Civil Engineering, and Planology. Basic Sciences, which is divided into: Chemistry and Physics Health Sciences, which is divided into: Medical, Biotechnology specially in Health Science, and Dentistry
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 224 Documents
 5   6   7   8   9 
APLIKASI TANK MODEL DAN KESEIMBANGAN NERACA AIR STUDI KASUS MODEL DAS MIKRO (MDM),SUB-DAS CISAMPORA, DAS CIMANUK, KABUPATEN MAJALENGKA PROVINSI JAWA BARAT Syampadzi Nurroh dan Nana Mulyana Arifjaya
Jurnal Teknosains Vol 4, No 2 (2015): June
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/teknosains.7966

Abstract

The influence of forest cover in landuse is an important concern in the goverment’s regulation for distributionof water flow into the rivers. The River flow is one of the hydrology paramater importantness in order to bepriority in managamenet environmental. The one of hydrology which could be used for water balancepredictionbyTank Model. The Tank Model was applied using daily rainfall, evapotranspiration, and discharge river. Basedon research results that water balance are calculated by input parameter (precipitation, 678 mm) with outputparameter by discharge (623,48 mm) inequation curve discharge(Q = 1,606 (TMA1, 494)) with the correlation (R2)is 0,993and evapotranspiration (631,04 mm). Based on the indicators of the reliability of the Tank model thatthe value of the correlation coefficient (R) of 0,84 can be presented the results of verification in this case quitesatisfactory. The water balancewas surplus ouput by calculated 550 mm of water storage in ground water (38,80%),outflowdistributed recharge river 622,21 mm(33,90%) regard to runoff including 24% (runoff coefficient 0,24)and evapotranspiration 504,8 mm (27,30%).
RESPON KOMUNITAS BENTHIK INSEKTA EMPAT BULAN PASCA-KEBAKARAN HUTAN 2002 DI HULU KALI BOYONG GUNUNG MERAPI Tjut Sugandawaty Djohan
Jurnal Teknosains Vol 4, No 2 (2015): June
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/teknosains.7969

Abstract

The purpose of this research is to study the response of benthic insect community in the headwater of BoyongRiver, Mount Merapi, four months post-forest fire in 2002. Energy at the headwater ecosystem was based on thedetritus food-chain. The presence of benthic community indicated forest health. The forest fire caused energy whichentered into the river changed from allochtonous coarse particulat organic matter (CPOM) to fine particulatorganic matter (FPOM). This change would be responded by the functional group of benthic community. Datawere collected with Surber Sampler. The result showed that there were 12 genus constituent of benthic insectsconsisted of functional groups of collector gather, collector filter, predator, dan scrapper. The dominant functionalgroups were collector gather and collector filters, 2256 individual/m3 or 86.02% and the dominant genus of Baetisand Leutcra. Otherwise, scrapper was founded 111 individual/m3 or 4% and predator 256 individual/m3 or 10%.This condition showed that four months post-forest fire indicated dominant allochtonous in Boyong River wasCPOM and FPOM with size of 1 mm. The quality of nutrients in the water was low, otherwise, the sedimentnutrients was high. The dominance of functional group of collectors indicated that ecosystem of headwater forestin Boyong River had not been fully recovered.
MODEL PENGENDALIAN KESEHATAN TENAGA KERJA PADA KEGIATAN PENGECORAN LOGAM TRADISIONAL STUDI KASUS DI KAWASAN INDUSTRI BATUR KLATEN- JAWA TENGAH Latifah Hanum Damanik, Adi Heru Husodo, Totok Gunawan, dan Pramono Hadi
Jurnal Teknosains Vol 4, No 2 (2015): June
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/teknosains.7970

Abstract

Research conducted at PT. Bonjor Klaten the distribution of the metal dust in a casting chamber having an effect on the health of the workforce. Diseases caused by exposure to chemicals are dominant in the production process of metal casting in the PT.Bonjor Jaya Klaten is silica and manganese. This substance is thought to impact diseases such as silicosis, which silicosis is pneumoconiosis caused sucked (inhaled) dust silica free (SiO2) and suspected disease caused liveliest chemicals silica, the disease is becoming an important  issue for workers at factories has been running for twenty years. The method used in the study with the path analisys. Based on the results obtained that the activity in the kitchen cupola foundry chemicals produce particles coming from the chimney and output channels cupola kitchen spread the longer the exposure, the disease can affect the lungs and skin. Model of labor control in PT . Bonjor in the form of research findings include: digital simulation on the distribution pattern of the direction and the fall of the particle chemical substances silicon and manganese are dispersed in space foundry, planning SOP activity raw material preparation, filling and operation of the kitchen cupola based hazard in the workplace environment, in an effort metal dust pollution control by using personal protective equipment and supervision of the workplace environment, and the application of legislation  occupational safety and health related licensing and application SMK3 company in PT. Bonjor in efforts to control health workers traditionally casting.
MODEL OF MICROCLIMATIC INFLUENCE ON FLUCTUATION OF HERPETOFAUNA DIVERSITY IN CAMPUS AREA Tony F. Qurniawan
Jurnal Teknosains Vol 4, No 2 (2015): June
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/teknosains.7971

Abstract

The study on correlation of microclimates changes on fluctuations of herpetofauna diversity in campus area wasdone for the last six years. Monitoring herpetofauna diversity was conducted from 2007 to 2012 using VisualEncounter Survey. The analysis for designing a model on the influence of microclimates on fluctuations ofherpetofauna diversity performed by using smart PLS program. The result showed eight (8) species of amphibiansand twenty four (24) species of reptiles were identified within the last six-year visits (2007-2012). New country recordsof Lepidodactylus cf lugubris (Geckonidae) species were documented. The results also showed that fluctuations ofherpetofauna diversity in campus area was influenced by microclimates elements. The model of microclimaticinfluence on fluctuations of herpetofauna diversity showed that the humadity becomes a major factor influencingon fluctuations of herpetofauna diversity in campus area with the predictive-relevance (Q2) value is 99,817%.
OPTIMASI PROSES PENGUKURAN DIMENSI DAN DEFECT UBIN KERAMIK MENGGUNAKAN PENGOLAHAN CITRA DIGITAL DAN FULL FACTORIAL DESIGN Denny Sukma Eka Atmaja Muhammad Kusumawan Herliansyah
Jurnal Teknosains Vol 4, No 2 (2015): June
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/teknosains.7972

Abstract

Theinspection process of surface quality of ceramic tile could be done by using image processing technique throughthe optimization by using Center for Ceramics’s parameteron Indonesian National Standard (SNI) ISO 10545.This research will analyze from light intensities (level 300lx, 600lx, and 900lx), and camera distances (50cm, 75cmand 100cm), with three times replication using full factorial design. This research uses Matlab 2009a softwareto identify area and defect on dry spots ceramic tile’s surface. The result obtained from this research is there weresignificant influencing factors: light intensity, and camera distance, as well as the interaction of these factorstowards the error rate percentage of measuring areaand defect on ceramic tile’s surface. The smallest error ratevalue from measuring tile’s surface and diameter of dry spots with light intensity of 300lx and camera distance of50cm had been obtained the error rate value for each measurement about 0.0675% and 2.30%, with combinationof grayscale value for the error rate measurements of tile’s surface and diameter of dry spots were 0.2989 x 0.1140x R + G+0.5870 x B. Based on the correlation coefficient value between light intensity, camera distance towardsthe error rate of measuring areaand defect on tile’s surface, each of them was obtained correlation coefficient valueof camera distance with error rate had 0.518 and 0.516, which meant a strong correlation. The positive correlationcoefficient value showed a unidirectional relationship of two variables, where the rise of one variable would causethe rise of another variable and the decline of one variable would cause the decline of another variable.
RESENSI Biologi Molekular adalah Ilmu yang Menyenangkan dan Mudah Ivan Arie Wahyudi
Jurnal Teknosains Vol 4, No 2 (2015): June
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/teknosains.7973

Abstract

Biologi molekuler merupakan ilmu pengetahuan merupakan multi disiplinilmu dari biokimia, biologisel, dan genetika yang mempelajari aktivitas biologi pada level molekular, termasuk interaksi antara perbedaan tipe DNA, RNA, protein, dan biosintesisnya. Aktivitas atau mekanisme apa yang terjadi pada level molecular sangat penting untuk dipelajari sehingga dapat   menunjukkan gen apa yang mempengaruhi suatu penyakit genetik, identifikasi gen,identifikasi DNA, identifikasi DNA forensik, terapi gen dalam mengobati, dan mencegah penyakit dan sebagainya.
UJI IRITASI MATERIAL COBALT CHROMIUM SEBAGAI MATERIAL DASAR BONE PLATE UNTUK REKONSTRUKSI MANDIBULA Dian Permata Sari; Eti Nurwening Sholihah; Muhammad Kusumawan Herliansyah
Jurnal Teknosains Vol 7, No 2 (2018): June
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/teknosains.8162

Abstract

The mandibular bone defect can cause speech disorder, mastication malfunction, and aesthetic problems. The application of plate for mandibular reconstruction can improve the function disorder. Plate material must be strong, resilient, able to adapt to the bone surface, and has good biocompatibility. Cobalt chromium is a cobalt base alloys are often used for implant materials. It has good mechanical properties, biocompatibility, and corrosion resistance. The aim of this study was to investigate the effect of local irritation and tissue response on material cobalt chromium. This study used three albino rabbits were injected by the material powder in polar and nonpolar solvents with intracutaneous injection method, then the treatments were observed on the first, second, and third days. Erythema and edema that occurs were scored based on grading system for intracutaneous (intradermal) reactions. Friedmann test showed no significant difference between treatment groups (p> 0.05). The results showed that erythema and edema arising from irritant reactions are still within normal limits. Irritation occurs due to the release of cobalt chromium ions which trigger hypersensitivity reactions and result in systemic immunity.
PENGEMBANGAN MODEL MATEMATIKA JARINGAN SUPPLY CHAIN DENGAN MEMPERTIMBANGKAN EMISI PADA INDUSTRI DAUR ULANG KERTAS Asgar Ali; Nur Aini Masruroh
Jurnal Teknosains Vol 5, No 2 (2016): June
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/teknosains.8526

Abstract

Recycling is part of the green supply chain management which is developed base on the concept of environmentally friendly industry to respond the various issues regarding the environmental problems of the world. Distribution of recycled products starts from consumers and ends to manufacturing. The objective is to limit the waste in order to save energy and prevent the dumping of hazardous materials into the environment. However there are complexities in the supply chain because of some uncertainties such as the return of recycled product and the environmental impact resulting from the operation of supply chain. In this research, linear programming optimization method is proposed to overcome that problem with maximizing profit is set as the objective function. Emissions resulting from the recycling process are considered in the model. These results indicate that the mathematical model provides profit of Rp. 37.909.659, with 1.137.760 grams of CO2 emissions from the production process, 38.473,4 grams of CO and 5.884,9 grams HC + NOX of transport. While the proposed strategy is use the right vehicles and select the most efficient route according to the paper collected from consumers and sold to manufacturing. For the production process, it is required to add 3 pressing machines and 1 chopped machine, so the capacity of the working hours of 384 hours per month can be increased to 960 hours per month.
EFFECT OF NON DENTAL GLASS FIBER ORIENTATION ON TRANSVERSE STRENGTH OF DENTAL FIBER REINFORCED COMPOSITE Abdulghani Ali Khalil; Widowati Siswomiharjo; Siti Sunarintyas
Jurnal Teknosains Vol 5, No 2 (2016): June
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/teknosains.9131

Abstract

FRC is widely used in dentistry especially for dental bridges construction. E glass fiber is commonly used because it has good properties and good bonding with polymers. Its availability is limited and its price quite expensive in Indonesia. Non dental glass fiber is available in Indonesia with lower price. The aim of this research was to evaluate the effect of non dental glass fiber orientation on transverse strength of dental FRC. Non dental glass fiber (HJ, China) with two orientations (Roving and Woven roving), Flowable composite (CharmFil Flow, DenKist, Korea) , Silane coupling agent (Monobond S, Ivoclar Vivadent, Liechtenstein) and distilled water. 24 specimens of non dental glass FRC, divided into 2 groups. The specimens was immersed in water for 24 hours and 7 days. The data were analyzed by Independent sample T-test. T-test analysis showed that for transverse strength with 24 hours water immersion there was a significant difference between the two orientation groups  (p< 0.05). The data of 7 days immersion there was no statistical difference between the groups (p> 0.05). In conclusion: there was different transverse strength between roving and woven roving orientation in dental FRC. 
MODEL MATEMATIS PREDIKSI KESUKSESAN PRODUK MEMPERTIMBANGKAN BUDAYA PADA KENDARAAN BERMOTOR RODA EMPAT Ratih Setyaningrum; Subagyo Subagyo; Andi Rahadiyan Wijaya
Jurnal Teknosains Vol 5, No 1 (2015): December
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/teknosains.9313

Abstract

Cultural aspects and Maslow needs has been considered on product development process. There is also has indication of product selection mutation based on Maslow needs ability. Based on these conditions, formulation of successful product development strategy in the future need to consider cultural aspects. Therefore, the purpose of this study is to determine mathematical model of products four-wheeled vehicles and to predict success. Stages of research include developing mathematical models, the validation process models and best model selection. The results of a mathematical model based on market share indicates that the component must-be inversely proportional to the success of the product, while the components of one-dimentional and attractive is directly proportional to the success of the product. The calculation result that Kano generate mathematical equations require further research. These research expected can determine the success of the model with the parameters of the success product in addition to market share.

Page 7 of 23 | Total Record : 224

 5   6   7   8   9 

Filter by Year

2011 2025


Reset
Filter By Issues
All Issue Vol 14, No 2 (2025): June Vol 14, No 1 (2024): December Vol 13, No 2 (2024): June Vol 13, No 1 (2023): December Vol 12, No 2 (2023): June Vol 12, No 1 (2022): December Vol 11, No 2 (2022): June Vol 11, No 1 (2021): December Vol 10, No 2 (2021): June Vol 10, No 1 (2020): December Vol 9, No 2 (2020): June Vol 9, No 1 (2019): December Vol 8, No 2 (2019): June Vol 8, No 1 (2018): December Vol 7, No 2 (2018): June Vol 7, No 1 (2017): December Vol 6, No 2 (2017): June Vol 6, No 1 (2016): December Vol 5, No 2 (2016): June Vol 5, No 1 (2015): December Vol 4, No 2 (2015): June Vol 4, No 1 (2014): December Vol 3, No 2 (2014): June Vol 3, No 1 (2013): December Vol 2, No 2 (2013): June Vol 2, No 1 (2012): December Vol 1, No 2 (2012): June Vol 1, No 1 (2011): December More Issue