cover
Contact Name
muhammad syarif
Contact Email
muhsyarif00@unismuh.ac.id
Phone
+628112631058
Journal Mail Official
teknosains@ugm.ac.id
Editorial Address
Department of Biomaterials, Faculty of Dentistry, Universitas Gadah Mada, Yogyakarta, Indonesia
Location
Kab. sleman,
Daerah istimewa yogyakarta
INDONESIA
Teknosains
ISSN : 20896131     EISSN : 24431311     DOI : DOI 10.22146/teknosains.33708
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. The journal provides a stimulating and informative variety of papers geared toward theory and practice in the following area: - Agriculture and Forestry - Biology - Chemistry - Computer Science - Engineering - Environmental sciences - Health sciences - Mathematics/Statistics - Natural and Earth Sciences - Physics - Zoology
Articles 181 Documents
DANAU-DANAU VOLKANIK DI DATARAN TINGGI DIENG: PEMANFAATAN DAN MASALAH LINGKUNGAN YANG DIHADAPI Sudarmadji Sudarmadji; Hari Supriyono; Sri Lestari
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.26856

Abstract

Volcanic lakes in the Dieng Plateau are famous because of their uniqueness; they have been used for various purposes. The area of Dieng Plateau has changed. The present land use is manly for the area of potato-producing farmland. In the area erosion process caused sedimentation in the lake to occur rapidly, it reduced the volume of the lake and water pollution. On the other hand, Dieng Local communities have been using water of these lakes. This study aims to: 1)inventory of volcanic lakes and environmental impacts that occur; 2. assess the environmental degradation in the area Dieng volcanic lake; and 3. assess the wisdom of local communities in the utilization of the lake. In this research, there are four lakes, namely Telaga Warna and Pengilon (as one unit), Telaga Merdada and Telaga Cebong were studied. This research was conducted by survey method. Field observation and interview with respondents were conducted. Water samples were collected from the lakes, followed laboratory analysis. Results of this study indicate that each lake has different potentials and problems. Telaga Warna and Pengilon potential as a tourist attraction that can be developed further, Telaga Merdada already in critical condition as a result of sedimentation and reducing of water volume, while the Telaga Cebong has a better conditions as local awareness for the conservation of the lake.
Possibility study of implementing vertical constructed wetland for domestic waste water treatment in urban kampong Haryati Sutanto; Paulus Bawole
Jurnal Teknosains Vol 10, No 2 (2021): June
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/teknosains.63801

Abstract

The Indonesian Ministry of Environment in 2014 released study results that 60-70% of rivers in Indonesia have been polluted by domestic wastewater, which is not treated properly. Improper and inadequate wastewater treatment not only pollutes water resources and damages ecosystems, but can also pose a significant public health risk. The development of spontaneous settlements in urban kampong makes the environmental quality within the settlements getting worse and many people consider that the area of urban kampong is not habitable. The efforts to treat wastewater before being discharged into water bodies are very important. The study of "vertical constructed wetland" model using water plants which are also ornamental plants can be considered as an alternative system for household wastewater treatment in kampong settlements.  The objective of the research is to develop an alternative model of wastewater treatment that can overcome the obstacles of implementing a wastewater treatment system in terms of cost and availability land. The result shows that the removal efficiency of BOD, phosphate and total coliform are 71.64%, 50,92% and 99.67% respectively. Since the research is still being conducted on a laboratory scale, the further study must be developed with real case studies in low income community settlements in Kampung Kota. Additionally this research can give suggestions to local government an alternative policy to implement domestic waste water treatment plan in a densely populated settlement along the riverbank in the city.
Typology of resilience strategies for natural disasters in Yogyakarta city Guruh Krisnantara; M. Sani Roychansyah
Jurnal Teknosains Vol 10, No 2 (2021): June
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/teknosains.63295

Abstract

Urban areas in disaster prone require increased capacity in order to reduce the risk level. This study identifies resilience strategies in towards natural disasters in the village unit to obtain detailed data. This study uses field observations to find information about resilience strategies that have been carried out by the government and by the public in general and with snowball sampling techniques in each unit of analysis. Some strategies obtained were then made a typology of strategies found in several villages in the city of Yogyakarta. The results of this study are there are two types of strategies for increasing resilience in Yogyakarta, bottom-up strategy and top-down strategy. Bottom-up strategy is a strategy that was indeed initiated and carried out by the village although in the end it still cannot be separated from the role of main stakeholders, among others, is conducting disaster simulations, training in the use of emergency equipment, disaster socialization, planning, and infrastructure preparation. Top-down strategy is a strategy or policy carried out by the regional government in order to coordinate the level of resilience in the entire region of Yogyakarta, including the addition of the Kampung Tangguh Bencana (KTB), village expansion, organizing volunteers, and infrastructure development.
Analisis pengaruh tebal plat terhadap karakteristik mekanik pegas daun pada prototipe mobil fish car unej (fcu) mudskip Khoirur Rohman; Rika Dwi Hidayatul Qoryah; Aris Zainul Muttaqin; Santoso Mulyadi
Jurnal Teknosains Vol 10, No 2 (2021): June
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/teknosains.62656

Abstract

Fish Car Unej (FCU) Mudskip is a car designed with a rural terrain system, especially for fishing transportation. FCU Mudskip uses leaf spring suspension at the rear to support the weight of the vehicle, that is leaning towards the rear. The load of the vehicle is inclined to the rear due to the car carrying system in the form of fish and water. This conveying system can cause leaf spring failure. Therefore, this study aims to determine the value of stress, strain and cycle on leaf springs. Ansys 18.1 software was used to obtain stress, strain, and leaf spring cycle values with a thickness of 7 mm, 10 mm, and 13 mm. The value of stress on leaf springs with thickness 7 is 124,31 x 106 N/m2; thickness 10 mm is 74,92 x 106 N/m2; thickness 13 mm is 48,08 x 106N/m2; the value of strain on leaf springs with a thickness of 7 mm is 0,00075; a thickness of 10 mm is 0,00045; a thickness of 13 mm is 0,00029; Acceptable cycles of leaf springs are 7 mm thick is 69206 cycles, 10 mm is 77833 cycles, and 13 mm thick is 93054 cycles. Leaf springs with a thickness of 13 mm are the most optimal leaf springs because they can receive the most cycles of 93054 cycles, according to the function of leaf springs as vibration dampers.
Strut Linker Geometry Improving Mechanical Behaviorof Coronary Stent Rachmat Sriwijaya; Dita Ayu Mayasari; Siti Sunarintyas
Jurnal Teknosains Vol 9, No 2 (2020): June
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/teknosains.54519

Abstract

Stent is one of the common solution that is offered to the patient with atherosclerosis. An ideal stent should have good mechanical and biological properties. This research aims to analyze how importance strut linker geometry affect mechanical behavior of stent especially on recoil percentage, foreshortening percentage and fatigue safety factor prediction using finite element analysis. The result showed that strut linker geometry would specify the mechanical behavior
Identifikasi sebaran kerentanan kekeringan pertanian menggunakan analytical hierarchy process (ahp) di kabupaten Temanggung Ikaf Fajar Maulana; Sudaryatno Sudaryatno; Retnadi Heru Jatmiko
Jurnal Teknosains Vol 10, No 2 (2021): June
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/teknosains.54003

Abstract

The decreased rainfall in Indonesia is mainly influenced by the east monsoon so air pressure from the southern hemisphere which is dry will flow through Indonesia. In a relatively long time, this may cause drought condition on agricultural land in Indonesia in general and in Temanggung Regency in particular. In addition, ENSO (El Nino Southern Oscillation) contributed to the decreased rainfall in Indonesia. This phenomenon will be more intensive and extreme with the existence of global warming. The identification of vulnerability of agricultural drought is an effort to mitigate disasters. This study aims to determine the distribution of agricultural drought and determine the factors that influence agricultural drought in Temangung Regency. The research method used the Analytical Hierarchy Process (AHP) to build a model of agricultural drought vulnerability by considering several factors. The results showed that the area of agricultural land which is vulnerable and very vulnerable  to drought is 86,2 km2 and 74,14 km2, while agricultural land with moderate vulnerability is 208,21 km2, and agricultural land which is not vulnerable and very not vulnerable to drought is 128,15 km2 and 267,33 km2. The main factor as a determinant of agricultural drought in Temanggung Regency is rainfall. Meanwhile, the next factor is the respective land cover and soil texture. This research concludes that the effect of slope is not a big impact on agricultural drought in Temanggung Regency.
Pengaruh koreksi atenuasi radar cuaca terhadap perhitungan estimasi curah hujan di Jawa Timur Ahmad Kosasih; Hartono Hartono; Retnadi Heru Jatmiko
Jurnal Teknosains Vol 10, No 2 (2021): June
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/teknosains.53452

Abstract

Rainfall estimation using band C weather radar creates uncertainty in the results of its estimation accuracy. The cause is meteorological and non-meteorological disturbances that affect the reflectivity raw data (dBz), one of which is attenuation due to rain, especially with heavy and very heavy intensity. This study aims to evaluate the attenuation correction ability of the reflectivity raw data generated by the weather radar against the calculation of rainfall estimates at the Juanda Sidoarjo Meteorological Station, as well as the best attenuation correction coefficient to be applied in the processing of rainfall estimates by weather radar. The method used to perform attenuation correction is Z-based attenuation correction (ZATC). The calculation of attenuation correction using the ZATC method uses several α and β coefficients while the Z-R relation (Z = 200R1.6) is used to calculate the estimated rainfall before and after attenuation correction. The results showed that the attenuation correction of the C band weather radar reflectivity raw data was able to provide an increase in the accuracy of rainfall estimation where in the estimation of rainfall from a weather radar without the attenuation correction stage of the raw data, an accuracy value of 70.8% was obtained, while applying the attenuation correction using several The α and β coefficients obtained an increase in the accuracy of rainfall estimation between 72.5% to 86.9%. The best α and β coefficients for attenuation correction of weather radar reflectivity (dBz) can be applied in obtaining a more accurate rainfall estimate, namely the α and β coefficients according to Krämer and Verworn which are able to provide an increase in the accuracy of rainfall estimation by 16.1%.
SIMULASI ANTRIAN UNTUK APPOINTMENT SCHEDULING PADA SISTEM PELAYANANKESEHATAN (STUDI KASUS POLIKLINIK PENYAKIT DALAM) Diyah Pramita Sari; Anna Maria Sri Asih
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.26857

Abstract

Hospital as a health institution must be able to give good services for its stakeholders, especially patients. However, patients often have to wait for quite a long time in queues before service. A study case in an internal medicine polyclinic in a large scale hospital in Yogyakartashowed that for around 60 patients in a day, they have to stay in queues for more than one hour averagely. This observation occurred when appointment scheduling was used, i.e. patient must make an appointment for the service time. This research evaluated some scenarios that can reduce the waiting time in this system. Results showed that patient’s arrival was recommended to be schedulled every 15 minutes with adjustment on the number of operating server. This recommendation can reduce patient’s waiting time by 28-50% by taking into account the presence of the late doctors.
PEMETAAN KOLABORATIF SITUASIONAL PADA KONDISI DARURAT Yusri Habibah Wahyuni; Budi Hartono
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.26858

Abstract

The first step to do disaster management accurately is getting comprehensive information about disaster. A situational map is the overview of the disaster situation based on geo-spatial information at a particular time. This map is a tool which can gain comprehensive information in emergency. This study aims to complement earlier research with re test confidence level variable that is divided for object detection, type, and location. Besides this study examines collecting information system in emergency situation model that used to be used by police agencies which is using mediator. this study is conducted by experiments that involved 48 participants that were divided in 16 groups. The participants sample consisted of wide variety of different majority and educational level in UGM and non UGM with age range between 19 and 29 years old (Mean = 24; SD = 2.68). The whole experiments are collaboration, collaboration with confidence level and collaboration with mediator. Assessments of experiment accuracy were used three kinds which are checklist, detection and position of objects. Another factor that is considered is prior knowledge of mediator and respondent. This study using α = 5% and ANOVA showed position information more accurate with confidence level model. Other information like checklist and detection could using all model. Prior knowledge have not affected in improving map accuracy.
THE PHYSIOLOGICAL RESPONSE AND PRODUCTIVITY OF MAIZE (Zea mays L.) ‘Sweet Boy-02’ IN DIFFERENT LIGHT AND WATER TREATMENT Hafidha Asni Akmalia; E. Suharyanto
Jurnal Teknosains Vol 6, No 2 (2017): June
Publisher : Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/teknosains.22648

Abstract

Physiological response is one of adaptation in plant toward its environment. This is related to plant productivity because there is a different physiological mechanism playing an important role in phenotype and productivity. The aims of the research were (1) to evaluate physiological response of maize in different light and water treatment, and (2) to determine the right light and water treatment to increase maize productivity. This research used Randomized Completed Design with 3 regimes of light intensity (63694, 11408 dan 3897 Lux) and 3 regimes of watering (2 L/ 1,6 L/ and 1,2 L). Each combination was done with 3 replications. Maize was harvested in 75 days after the treatment and the measured physiological responses were chlorophyll content, proline content, and root length meanwhile the plant productivity was seen from the fruit. Data were analyzed by Anava and DMRT test with significance level of 5%. The results showed that the light intensity L1 (63694 Lux) and watering W1 (2 L) increased the chlorophyll content, and produvtivity while proline content and root length increased under high light intensity L1 (63694 Lux) and drought W2 (1,6 L)-W3 (1,2 L). The optimal productivity presented in treatment L1 (63694 Lux) and W1 (2 L) seen from the heaviest fruit.

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