Jurnal Teknosains
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Urban tourism space based on bike-sharing tourist in Yogyakarta city
No full textThis paper identifies the urban tourism space in a complex way as chosen by the bike-sharing tourists in Yogyakarta. The space is defined as not only the tourist attraction object which has become a common attraction but also the elements of urban architecture such as landmarks, districts, paths, edges, and nodes that becoming lanes, stop points, and the destination for the tourist when cycling around using bike-sharing. The data collecting used in this research is person-cantered mapping by following the bike-sharing tourists’ movement and giving questionnaires to find out the tourists’ motivation in using bike-sharing for tourism. The hypothesis shows that the tourists would prefer to choose the common attraction as an urban tourism space in Yogyakarta. But by cycling, the tourists will be able to seek a new experience because they can be more flexible in exploring the space with uniqueness which has the shape of urban architecture elements. The research results showed that landmarks and paths were the two urban architecture elements that gave strong characteristics toward urban tourism space, as preferred by the bike-sharing tourists in Yogyakarta. The tourist attraction with both characteristics was located around the city centre. It indicated that the distribution of visits is still centrally located close to the bike shelters. So that the tourists could go to the other unique destinations in Yogyakarta, thus the researcher recommends that the bike shelters need to be evenly spread approaching the tourism attractions and amenities
Possibility study of implementing vertical constructed wetland for domestic waste water treatment in urban kampong
No full textThe 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
EDITORIAL
No full textSekolah Pascasarjana Universitas Gadjah Mada dengan keragaman program studinya merupakan tempat dari pengembangan ilmu-ilmu multidisipliner dengan dasar keilmuan bidang teknologi, agronomi, dan kesehatan. Sebagai tuntutan dari pengembangan ilmu pengetahuan dan teknologi, Jurnal Teknosains terbit sebagai wadah untuk mempublikasikan hasil-hasil penelitian yang mendasar serta inovatif. Kehidupan makhluk di dunia tidak pernah bisa lepas dari permasalahan. Setiap saat muncul permasalahan mulai dari yang sederhana sampai dengan yang bersifat sangat kompleks. Akan tetapi, kompleksitas dari permasalahan-permasalahan yang muncul justru menjadi tantangan yang besar bagi pengembangan ilmu pengetahuan serta para akademisi. Hal tersebut dapat dibuktikan melalui artikel-artikel yang dipublikasikan penerbitan ini. Pada edisi ini ada delapan artikel yang dipublikasikan. Tim redaksi telah telah berupaya secara konsisten untuk memilih artikel serta menyuntingnya berdasarkan pedoman penulisan publikasi ilmiah. Penyuntingan artikel telah melibatkan mereka yang ahli di dalam bidanya. Akhir kata, mohon maaf atas belum sempurnanya terbitan ini serta terima kasih yang tidak terhingga kepada semua pihak yang telah bersusah payah ikut terlibat dalam penerbitan ini. Selamat membaca dan semoga bermanfaat bagi pengembangan ilmu pengetahuan serta wawasan akademik kita semua
Composite resin restoration with fiber reinforced composite after root canal treatment of necrotic pulp tooth with gumboil
No full textGumboil is inflammation reaction in the gum caused by pulp infection. Gumboil is seen as an oral lesion characterized by a soft erythematous papule where a periapical abcess is draining into the oral cavity. An adequate root canal treatment can cure gumboil and remove bacteria from the root canal. To support the success of root canal treatment, final restoration used in this case is composite resin restoration with reinforcing fiber (short fiber reinforced composite). The purpose of this treatment was to restore the functions of tooth in mastication and preserving the supporting tissue. A female patient age 23 years old came with complaints of pain in the lower right mandibular molar accompanied by swelling of the gums around the teeth since a week ago. Swelling is intermittent since last 3 months. The tooth have been restored for about 3 years ago. Clinical examination showed a positive percussion, positive palpation, negative vitality, and negative mobility. Radiographic examination showed bifurcation and periapical lesions. Root canal treatment is performed with crown down preparation technique and followed by direct composite resin restoration with short fiber reiforced composite. The success of root canal treatment followed by composite resin restoration with short fiber reinforced fiber is marked by the absence of complaints as well as the dissappearance of gumboil
Determination of the convective heat transfer constant (c and n) in a solar still
No full textThe geometry of a solar still determines the convection constants C and n, which in turn affect the convection heat transfer coefficient’s value and mass. A method for determining the value of convection heat transfer constants C and n has already been developed by the researchers. Therefore, this study aimed to use several methods and theories to find the value of convection heat transfer constants C and n. The results are then compared with the results of the study. The solar still used in this study has one slope. To reduce variables that cannot be controlled, the data collection was conducted indoors using a halogen lamp that can be regulated as a heat source for 24 hours nonstop. The sea surface height in the solar still was maintained at a height of 20 mm, using a height regulator. Temperature was measured using a data logger set to enter data every hour. The desalinised clean water was stored in bottles placed on scales that were recorded every one hour. Room temperature was maintained in the range of 35 to 36 oC. The data in this study were used to calculate the heat transfer constants C and n to obtain the value of the convection heat transfer coefficient and mass calculation. This study compares the calculation models of Tiwari, Dunkle and Power. The following calculation model results: Tiwari model, C = 0.082 and n = 0.612; Dunkle model, C = 0.075 and n = 1/3; Power model, C = 0.815 and n = 0.611. The C and n values obtained with these four approaches reveal that the results from the Power model calculation are the closest to the actual mass, showing a percentage deviation of 1.63%
Strategi pengelolaan pariwisata berkelanjutan di kawasan wisata alam sumber maron, kabupaten Malang
No full textWisata Alam Sumber Maron is a tourist destination in Malang Regency which is currently experiencing a surge in tourists. In addition, there are problems with the conversion of land from plantations to developed land. Both of these problems have an impact on the quality of the environment in Wisata Alam Sumber Maron, causing the tourist destination area to be unsustainable. The purpose of this research is to analyze the management strategies that can be applied in Wisata Alam Sumber Maron. The data analysis used is an analysis of the carrying capacity of the environment to determine its physical factors, stakeholder analysis to determine social factors and analysis of travel costs to determine economic factors. Based on the method used, the final result is ha the effective carrying capacity at the Wisata Alam Sumber Maron is 179 people/day. This figure is then used as a guideline for strategy formulation.The management strategy is formulated using the 4 pillars of tourism method as stated in the Undang-Undang Number 10 of 2009 about Kepariwisataan, namely the tourism industry, destinations, marketing, and tourism institutions
The pattern of lingga village based on history
No full textLingga Village is a tourist village that is well known as a traditional Karo tourism village and has become a major tourism destination in North Sumatra Province. This village still has a legacy of traditional Karo architecture. In ancient times this Lingga village had 80 units of traditional houses. During holidays, tourists visiting this village can reach as many as 300 people from within the country and from abroad. Currently in Lingga Village there are only two units of the Karo Traditional House. The purpose of this research is to model the village pattern of Lingga village based on interview about village’s history. The formulation of the problem that is the focus of this research are; how was the pattern of the villages, how was the orientation of the Karo Traditional House in Lingga Village in the past, how was the circulation of Lingga Village villages in the past. The research method used in this study is the simulation by modeling method. The primary data collection consisted of observing, documenting, and conducting interviews with informants from Lingga Village. Secondary data collection consists of books and journals about Lingga Village. The final result of this research is the model of the pattern of Lingga village based on history. The model focuses on house orientation, circulation patterns and types of traditional houses in Lingga village.
EDITORIAL
No full textSekolah Pascasarjana Universitas Gadjah Mada mempunyai minat serta program studi yang beragam. Dengan dasar keilmuan lintas disiplin, dapat menjadi bukti bahwa Sekolah Pascasarjana mengembangkan diri untuk memenuhi kebutuhan keilmuan agar dapat menyelesaikan permasalahan di dalam kehidupan manusia yang juga sangat beragam. Tidak bisa dipungkiri bahwa kondisi pandemi covid-19 tengah melanda semua negara, tetapi ternyata hal itu tidak menyurutkan perhatian para peneliti untuk mempublikasikan hasil penelitiannya. Hal tersebut dibuktikan antara lain dengan banyaknya makalah yang masuk ke tim redaksi. Secara konsisten dan profesional tim redaksi telah memilih serta melakukan penyuntingan terhadap delapan artikel yang dipublikasi dalam penerbitan ini. Adapun penyuntingan artikel telah melibatkan para reviewer yang sesuai dengan bidangnya. Sudah sepuluh tahun Jurnal Teknosains hadir, tim redaksi terus berupaya untuk melakukan penyempurnaan. Mohon maaf apabila masih terdapat kekurangan dalam penerbitan di edisi Desember 2021, Volume 11, Nomor 1. Terima kasih yang tidak terhingga kepada semua pihak yang telah meluangkan waktu serta tenaga dalam proses penerbitan ini. Selamat membaca, semoga bermanfaat bagi pengembangan ilmu pengetahuan serta wawasan akademik kita semua
Identifikasi sebaran kerentanan kekeringan pertanian menggunakan analytical hierarchy process (ahp) di kabupaten Temanggung
No full textThe 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
Employing lipase of candida antarctica (calb) as catalyst in the acetylation of para-aminophenol in aqueous and water-free medium
No full textCandida antarctica lipase B (CaLB) is one of lipase classes enzymes that has many advantages to be used in the process of synthesizing organic compounds. In this study, some experiments were conducted to examine the ability of CaLB as a catalyst in the para-aminophenol (PAP) acetylation to produce paracetamol as the result. Two types of research have been carried out, the first one is to utilize CaLB to catalyze acetylation of PAP in a water-free reaction medium, and the second one is to use CaLB as catalyst in aqueous medium through oxidative amidation reaction. Reaction in water free system was held in ethyl catalyst acetate as solvent that also act as the acyl donor, while in the aqueous medium, acetylacetone was used as acyl donor and ethyl acetate as source to produce peracid that will be used as oxidator. Analysis was done by HPLC and TLC densitometric to follow the amount of paracetamol produced. The results of CaLB-catalyzed acylation in water free system showed that the enzyme could accept PAF and ethyl acetate as a substrate in a nucleophilic substitution reaction, resulting in paracetamol as a product. However, the yield from the acylation of PAP is still not satisfactory. In the reaction in aqueous medium, CaLB has been proven to show its activity to catalyze the acylation of PAP with acetylacetone, as well as the reaction of peracid formation from ethyl acetate. The results show that this strategy can work well and give better yields than the other reaction in water-free medium