{"title":"GEOLOGI DAN POTENSI SUMBERDAYA BATUBARA, DESA TALANG LAMBAITAMPUI, KECAMATAN SEKAYU, KABUPATEN MUSI BANYUASIN, PROPINSI SUMATRA SELATAN","authors":"Mirza Adiwarman","doi":"10.55904/hexatech.v1i01.57","DOIUrl":"https://doi.org/10.55904/hexatech.v1i01.57","url":null,"abstract":"\u0000 \u0000 \u0000 \u0000The research area is located in Tanah Abang village, Sekayu district, Musi Banyuasin district, South Sumatra province. This research was conducted through three stages, namely the preliminary stage accompanied by data collection, the analysis and interpretation stage, and the completion and data presentation stage. Stratigraphy in the study area is divided into three rock units from old to young, namely the Muara Enim Sandstone unit, at the top the Muara Enim Claystone unit is deposited in harmony. In the study area there are two main coal seams, where both seams can be drawn continuously. The Calculation of Seam X Coal Resources Inferred Estimated Distance is 400 meters Total tonnage:1,364,626.9 tons. Calculation of Seam Y Coal Resources Inferred Distance Estimated 400 mTotal tonnage : 278,952.7 tons. Calculation of Seam X Coal Resources Indicated Distance Estimated 750 m Total tonnage : 3,016,306 tons. Calculation of Seam Y Coal Resources Indicated Estimated Distance 750 m Total tonnage : 524,890.6 tons. Calculation of Coal Resources of Seam X Measured Distance Estimated 1100 m Total tonnage : 4,775,195.4 tons Calculation of Coal Resources of Seam Y Measured Distance Estimated 1100 m Total amount of tonnage : 701,819.3 tons. \u0000 \u0000 \u0000 \u0000","PeriodicalId":262527,"journal":{"name":"Hexatech: Jurnal Ilmiah Teknik","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124602141","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"PERANCANGAN APLIKASI INVOICE BERBASIS MOBILE STUDI KASUS UMKM","authors":"Elmo Agusti","doi":"10.55904/hexatech.v1i01.56","DOIUrl":"https://doi.org/10.55904/hexatech.v1i01.56","url":null,"abstract":"Information technology plays an important role as a medium of information and communication in UMKM activities, one of which is the management of Angkringan stalls in the Pamulang area, South Tangerang. Based on this research activity, it is very useful for UMKM actors, namely through this mobile based invoice application, UMKM participants can view detailed sales reports without having to record every transaction manually. Through this mobile based invoice application, UMKM participants can print invoice via a bluetooth printer whitout manual writing, and this process can help the transaction management process more efficiently.","PeriodicalId":262527,"journal":{"name":"Hexatech: Jurnal Ilmiah Teknik","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124515598","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"VARIASI AMPERE TERHADAP KEKUATAN TARIK PADA HASIL PENGELASAN DENGAN POSISI DOWN HAND","authors":"Zulfadly Zulfadly, Muhammad Abdul Ghony","doi":"10.55904/hexatech.v1i01.75","DOIUrl":"https://doi.org/10.55904/hexatech.v1i01.75","url":null,"abstract":"Pengaruh yang terjadi pada hasil lasan jika penggunaan ampere tidak tepat ialah akan menimbulkan cacat las, penetrasi yang tidak maksimal, kekuatan lasan akan kalah dengan kekuatan material sehingga lasan menjadi rapuh dan mudah putus, dan terjadi lebarnya diameter pengelasan. survey data-data terkait penggunaan ampere pada pengelasan menggunakan elektroda 7018 diameter 3,2 dengan metode SMAW yang selanjutnya untuk dijadikan acuan untuk di teliti. ampere yang digunakan adalah 100 A, 110 A dan 120A Pada hasil pengelasan ini kemudian dilakukan proses pendinginan dengan media pendingin udara.. Kemudian plate dipotong menjadi beberapa bagian dengan menggunakan mesin cutting. Hasil dari pengujian tarik yang telah dilakukan, ampere yang tepat pada posisi pengelasan down hand dengan menggunakan elektroda E7018 diameter 3,2 pada material ST52-3 plate 10 milli meter yaitu ampere 110 A dengan nilai 528,428 N/mm2.","PeriodicalId":262527,"journal":{"name":"Hexatech: Jurnal Ilmiah Teknik","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121738930","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Pengaruh Suhu dan Waktu Pemanasan terhadap Nilai HGI pada Sampel Batubara di PT. Bukit Asam Tbk","authors":"Muhammad Abdul Ghony","doi":"10.55904/hexatech.v1i01.54","DOIUrl":"https://doi.org/10.55904/hexatech.v1i01.54","url":null,"abstract":"\u0000 \u0000 \u0000 \u0000HGI is a laboratory measurement of the ease or difficulty of grinding or pulverizing coal. The grinding index value determines the time and effort required to grind coal to a certain fineness. This test is determined by preparing a certain grain size to be ground using a machine under standard conditions and the amount of coal being crushed is compared to the standard linearity of coal. The HGI standard values that have been certified using ASTM standards are 32, 49, 65, and 95. This study consisted of variables, namely temperature and heating time, and related variables, namely HGI values. HGI data retrieval after heating minutes was carried out on coal samples with heating temperatures of 50˚C, 100˚C, 150˚C and 200˚C and heating times of 30 minutes, 60, 90 minutes and 120 minutes. The condition of the optimum HGI value was obtained at a heating temperature of 100℃ and a time of 60 minutes with an HGI value of 70.2558,. This index is very helpful in assessing the capacity of the mill used to grind coal to the required size for feed to the furnace besides HGI also affects how the coal is distributed in the lifting equipment properly. \u0000 \u0000 \u0000 \u0000","PeriodicalId":262527,"journal":{"name":"Hexatech: Jurnal Ilmiah Teknik","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115985451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"PEMANFAATAN MODUL ARDUINO UNTUK MENINGKATKAN HASIL BELAJAR MIKROPROSESOR KELAS XI ELIN DI SMKN 4 PARIAMAN","authors":"M. Syaiful","doi":"10.55904/hexatech.v1i01.74","DOIUrl":"https://doi.org/10.55904/hexatech.v1i01.74","url":null,"abstract":"This event will be based on research by the learning outcomes of students who have not yet reached the KKM on subjects of microprocessors in the class XI ELIN SMK Negeri 4 Pariaman. One of the factors that influence student learning outcomes is low yet the availability of media trainers used as alternatives in learning. Therefore it needs to be done by applying the research module the arduino to see the results of student learning. This type of research was Quasi Experimental design with One Group Pretest-Posttest. The subject of this research is on grade XI ELIN SMK Negeri 4 Pariaman are registered on the academic year 2015/2016. In this research the methods of collecting data by using test results of learning in the form of an objective test consisting of a pretest and posttest. The data obtained were analyzed using the formula Gain Score. Based on the results of the study found that the average value of the pretest before the application of the Arduino module 64.48 and posttest average after the application of the arduino module of 76.55. Calculations using the gain score obtained on average an increase of 0.37 meaning has increased student learning results by category. Thus it can be concluded that the application of the arduino module can improve student learning results on subjects of microprocessors in the class XI ELIN SMK Negeri 4 Pariaman.","PeriodicalId":262527,"journal":{"name":"Hexatech: Jurnal Ilmiah Teknik","volume":"119 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124781646","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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