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Journal Cover Jurnal Teknosains
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  This is an Open Access Journal Open Access journal
   ISSN (Print) 2089-6131 - ISSN (Online) 2443-1311
   Published by Universitas Gadjah Mada Homepage  [28 journals]
  • EDITORIAL

    • Authors: Widowati Siswomihardjo
      PubDate: 2017-08-30
      DOI: 10.22146/teknosains.27869
      Issue No: Vol. 6, No. 2 (2017)
       
  • THE PHYSIOLOGICAL RESPONSE AND PRODUCTIVITY OF MAIZE (Zea mays L.)
           ‘Sweet Boy-02’ IN DIFFERENT LIGHT AND WATER TREATMENT

    • Authors: Hafidha Asni Akmalia, E. Suharyanto
      Pages: 59 - 71
      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.
      PubDate: 2017-08-30
      DOI: 10.22146/teknosains.22648
      Issue No: Vol. 6, No. 2 (2017)
       
  • NON SURGICAL LATROGENIC PERFORATION REPAIR USING MINERAL TRIOXIDE
           AGGREGATE AND DIRECT RESTORATION WITH FIBER POST ON CENTRAL MAXILLARY
           INCISOR

    • Authors: Hendargo Agung Pribadi, Yulita Kristanti
      Pages: 72 - 78
      Abstract: Perforation can be a problem that leading to root canal treatment failure in the long run. Perforation can be caused by iatrogenic factor. The most common iatrogenic perforation was found at maxillary anterior. Non surgery iatrogenic perforation repair can be done using mineral trioxide aggregate and direct restoration. The purpose of this case report was to describe non surgical iatrogenic perforation repair using mineral trioxide aggregate and direct restoration with fiber post. A 27 years old male patient diagnosed for pulpitis came to  RSGM Prof. Soedomo. Root canal treatment (pulp extirpation) had performed before he was referred for further treatment. Objective test showed both percussion and palpation were negative. From periapical radiograph could be noticed that there was no file left in the root canal. Root canal treatment was performed using step back technique and lateral condensation. Perforation was sealed by mineral trioxide aggregate. The tooth was restored using direct restoration with fiber post. Latrogenic perforation can be treated non surgically using mineral trioxide aggregate and directly restored using composite resin with fiber post.
      PubDate: 2017-08-30
      DOI: 10.22146/teknosains.27589
      Issue No: Vol. 6, No. 2 (2017)
       
  • PENYELESAIAN MULTI-OBJECTIVE FLEXIBLE JOB SHOP SCHEDULING PROBLEM
           MENGGUNAKAN HYBRID ALGORITMA IMUN

    • Authors: Yabunayya Habibi, Galandaru Swalaganata, Aprilia Divi Yustita
      Pages: 79 - 94
      Abstract: Flexible Job shop scheduling problem (FJSSP) is one of scheduling problems with specification: there is a job to be done in a certain order, each job contains a number of operations and each operation is processed on a machine of some available machine. The purpose of this paper is to solve Multi-objective Flexible Job Shop scheduling problem with minimizing the makespan, the biggest workload and the total workload of all machines. Because of complexity these problem, a integrated approach Immune Algorithm (IA) and Simulated Annealing (SA) algorithm are combined to solve the multi-objective FJSSP. A clonal selection is a strategy for generating new antibody based on selecting the antibody for reproduction. SA is used as a local search search algorithm for enhancing the local ability with certain probability to avoid becoming trapped in a local optimum. The simulation result have proved that this hybrid immune algorithm is an efficient and effective approach to solve the multi-objective FJSSP
      PubDate: 2017-08-30
      DOI: 10.22146/teknosains.22901
      Issue No: Vol. 6, No. 2 (2017)
       
  • MANAGEMENT OF MISALIGNED CROWN FRACTURE WITH EXTERNAL ROOF RESORPTION
           USING MINERAL TRIOXIDE AGGREGATE (MTA) AND CUSTOM CAST POST AND CORE
           RESTORATION

    • Authors: Rebecca Azary Kuncoro, Yulita Kristanti
      Pages: 95 - 100
      Abstract: Crown fracture is the most commonly reported traumatic injuries in the permanent dentition. One of the unfavorable response to trauma is the development of external root resorption (ERR). Injuries may also cause tooth angulation changes so it should be treated with a customized cast post and core to produce better aesthetic result and to obtain sufficient compressive strength.The case report describes the use of mineral trioxide aggregate (MTA) as an apical plug to promote periapical healing of an open apex and the use of custom cast post and core to correct the tooth angulation.Case report.A 23-year-old male patient came to RSGM Prof. Soedomo with a chief complaint of a fractured and labial misaligned of upper right central incisor due to trauma 10 years ago. Patient expressed his unwillingness to get orthodontic therapy. Percussion and palpation test showed no discomfort or pain. There was no mobility noticed. Radiograph showed periapical radiolucency and open apex. Tooth was treated with calcium hydroxide dressing and MTA apical plugs were placed in the apical portion of canals. Tooth was restored with custom cast post and core to correct the angulation followed by the placement of an porcelain crown.MTA can be used as apical plug for sealing open apex caused by ERR combined with custom cast post and core for other option for misaligned tooth.
      PubDate: 2017-08-30
      DOI: 10.22146/teknosains.27596
      Issue No: Vol. 6, No. 2 (2017)
       
  • KLASIFIKASI KATEGORI DOKUMEN BERITA BERBAHASA INDONESIA DENGAN METODE
           KATEGORISASI MULTI-LABEL BERBASIS DOMAIN-SPECIFIC ONTOLOGY

    • Authors: Janur Adi Putra, Pangestu Widodo, Suwanto Afiadi
      Pages: 101 - 112
      Abstract: A news document often related  to more than one category,  necessary for utilization  the method of categorization that is not only fast but also able to classify a news into many categories. Many methods can be used to categorize the news documents, one of which is an ontology. Ontology approach in the categorization of a document is based on the similarity of news features in documents with features that exist in the ontology. The use of ontologies in categorization that just based on the occurance of the term in calculating the relevance of the document, led to the emergence of many other features that are actually very relevant is undetectable. This paper proposed a new method for categorizing news documents are related with many categories, the method is based on a specific domain ontology and for document relevance calculation is not only based on the occurrence of the term but also take into account the relationships between terms that are formed. Tests performed on the Indonesian language news document with  two categories: sports and technology. The trial results show the value of the average accuracy is high, that the sports category was 93,85% and the technology category is 96,32%.
      PubDate: 2017-08-30
      DOI: 10.22146/teknosains.8611
      Issue No: Vol. 6, No. 2 (2017)
       
  • METODE KLASIFIKASI MUTU JAMBU BIJI MENGGUNAKAN KNN BERDASARKAN FITUR WARNA
           DAN TEKSTUR

    • Authors: Taftyani Yusuf Prahudaya, Agus Harjoko
      Pages: 113 - 123
      Abstract: Guava (Psidium guajava L.) is a fruit that has many health benefits. Guava also has commercial value in Indonesia and has a large market share. This indicates that the commodity of guava has been consumed by society extensively. This time the sorting process is still done manually which still has many shortcomings. This classification gives the classification results are less accurate and inconsistent due to the carelessness of humans. Grading process in the marketing sector is essential. Improper grading potentially detrimental to farmers because all the fruit quality were priced the same. Therefore, we need a consistent classification system.The system uses image processing to extract the color and texture features of guava. As a quality classification KNN method (K-Nearest Neighbor) is used. This system will classify guava into four quality classes, namely the super class, class A, class B, and external quality. KNN designed with input 7 features extraction which is the average value of RGB (Red, Green, and Blue), total defect area, and the GLCM value (entropy, homogeneity, and contrast) with the 4 outputs of quality. From the test results showed that the classification method is able to classify the quality of guava. The highest accuracy is obtained in testing K = 3 with 91.25% accuracy rate.
      PubDate: 2017-08-30
      DOI: 10.22146/teknosains.26972
      Issue No: Vol. 6, No. 2 (2017)
       
  • SINTESIS NANOMATERIAL MAGNETIT-SITRAT DAN PENGUJIAN APLIKASINYA SEBAGAI
           ADSORBEN EMAS (III)

    • Authors: Susanto Susanto, Ricka Prasdiantika, Theodor C.M. Bolle
      Pages: 124 - 129
      Abstract: This study aims to synthesize of  magnetite nanomaterial was dispersed with trisodium citrate (Fe3O4@citrate), carry out the characterization, and testing of  its application in adsorbing of Au(III). Research carried out by synthesis of Fe3O4 with stirring using ultrasonic waves to synthesis of magnetite in the system of co-precipitation, using sodium citrate as dispersing agent of magnetite, and using acetone-water as solvent at washing of magnetite. Synthesized product was characterized by Fourier Transform Infrared spectrophotometer (FTIR), X-ray diffractometer (XRD), and transmission electron microscope (TEM). The characterized results indicate that Fe3O4@citrate has successfully synthesized with particle size of 17 nm. Fe3O4@citrate has smaller particle size, has smaller aggregates and has better particle dispersion than Fe3O4 without citrate. Testing the potential of synthesized Fe3O4@citrate as adsorbent of Au(III) from HAuCl4 solution of 200 ppm at pH 3. The Synthesized Fe3O4@citrate adsorbed the gold(III) of (81.554 ± 1.403) mg/g.
      PubDate: 2017-08-30
      DOI: 10.22146/teknosains.10821
      Issue No: Vol. 6, No. 2 (2017)
       
  • ADVANCES IN BIOMATERIALS SCIENCE AND BIOMEDICAL APPLICATIONS

    • Authors: Joko Triyono
      Pages: 130 - 133
      Abstract: “Advances in Biomaterials Science and Biomedical Applications” merupakan buku teks yang disusun oleh beberapa penulis dari berbagai disiplin ilmu dari berbagai negara. Setiap bab yang ditulis merupakan hasil kajian, penelitian atau pengalaman pribadi penulis. Para pembaca dapat memperoleh gambaran umum untuk mengetahui potensi biomaterial di masa-masa mendatang. Pembaca juga akan mendapatkan gambaran bagaimana proses fabrikasi material implan berbasis organ manusia dilakukan dengan teknologi cetak 3 dimensi (3D printing). Buku ini terbagi menjadi 21 bab. Setiap bab diulas secara detail agar mudah dipahami.
      PubDate: 2017-08-30
      DOI: 10.22146/teknosains.27870
      Issue No: Vol. 6, No. 2 (2017)
       
 
 
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