Pub Date : 2021-12-31DOI: 10.32734/dinamis.v9i2.8445
Reymond Reflon F Gultom, M. Sabri
Pengelasan adalah proses penyambungan logam atau non-logam yang dilakukan dengan memanaskan material yang akan disambung hingga temperatur las, yang dilakukan dengan atau tanpa menggunakan tekanan dan dengan atau tanpa menggunakan logam pengisi. Salah satu teknik pengelasan adalah dengan pengelasan SMAW (Shield Metal Arc Welding) dan GTAW (Gas Tungsen Arc Welding). Dengan las tersebut kita dapat menyambung logam seperti: Aluminium, Tembaga, Carbon Steel, dan Stainless Steel. Penelitian ini dilakukan untuk mengetahui sifat mekanik, struktur mikro, dan kekuatan sambungan las pada Baja AISI 1050. Pengelasan dilakukan dengan menggunakan tungsten TG-S50 untuk las GTAW dan elektroda E-6013 untuk las SMAW pada arus 100 Ampere dengan sambungan kampuh V 60o. Metode pengujian yang dilakukan adalah uji kekerasan dengan metode Brinell Hardness Tester, uji tarik dengan Tensile Tester, dan uji struktur mikro dengan Metallurgycal Microscope. Hasil rata-rata dari uji kekerasan Brinell didapat sifat mekanik baja AISI 1045 las SMAW pada daerah las dengan elektroda E-6013 pada arus 100 A adalah 160,04 BHN dan las GTAW dengan filer TG-S50 pada arus 100 A adalah 172,53 BHN. Nilai rata-rata tegangan las SMAW dengan elektroda E-6013 pada arus 100 A adalah 323,14 MPa dan las GTAW dengan filler TG-S50 pada arus 100 A adalah 411,57 MPa. Bentuk struktur mikro pada daerah lasan dengan pengelasan GTAW memiliki struktur mikro yang lebih kecil dibandingkan dengan pengelasan SMAW, hal ini membuktikan bahwa nilai kekerasan pada daerah lasan GTAW lebih besar dari pada nilai kekerasan pada daerah lasan SMAW.
{"title":"ANALISA SIFAT MEKANIK DAN STRUKTUR MIKRO TERHADAP PENGELASAN BAJA AISI 1045 DENGAN METODE SMAW DAN GTAW PADA ARUS 100 AMPERE","authors":"Reymond Reflon F Gultom, M. Sabri","doi":"10.32734/dinamis.v9i2.8445","DOIUrl":"https://doi.org/10.32734/dinamis.v9i2.8445","url":null,"abstract":"Pengelasan adalah proses penyambungan logam atau non-logam yang dilakukan dengan memanaskan material yang akan disambung hingga temperatur las, yang dilakukan dengan atau tanpa menggunakan tekanan dan dengan atau tanpa menggunakan logam pengisi. Salah satu teknik pengelasan adalah dengan pengelasan SMAW (Shield Metal Arc Welding) dan GTAW (Gas Tungsen Arc Welding). Dengan las tersebut kita dapat menyambung logam seperti: Aluminium, Tembaga, Carbon Steel, dan Stainless Steel. Penelitian ini dilakukan untuk mengetahui sifat mekanik, struktur mikro, dan kekuatan sambungan las pada Baja AISI 1050. Pengelasan dilakukan dengan menggunakan tungsten TG-S50 untuk las GTAW dan elektroda E-6013 untuk las SMAW pada arus 100 Ampere dengan sambungan kampuh V 60o. Metode pengujian yang dilakukan adalah uji kekerasan dengan metode Brinell Hardness Tester, uji tarik dengan Tensile Tester, dan uji struktur mikro dengan Metallurgycal Microscope. Hasil rata-rata dari uji kekerasan Brinell didapat sifat mekanik baja AISI 1045 las SMAW pada daerah las dengan elektroda E-6013 pada arus 100 A adalah 160,04 BHN dan las GTAW dengan filer TG-S50 pada arus 100 A adalah 172,53 BHN. Nilai rata-rata tegangan las SMAW dengan elektroda E-6013 pada arus 100 A adalah 323,14 MPa dan las GTAW dengan filler TG-S50 pada arus 100 A adalah 411,57 MPa. Bentuk struktur mikro pada daerah lasan dengan pengelasan GTAW memiliki struktur mikro yang lebih kecil dibandingkan dengan pengelasan SMAW, hal ini membuktikan bahwa nilai kekerasan pada daerah lasan GTAW lebih besar dari pada nilai kekerasan pada daerah lasan SMAW.","PeriodicalId":11432,"journal":{"name":"DINAMIS","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79458625","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}
Pub Date : 2021-12-31DOI: 10.32734/dinamis.v9i2.8433
Syamsuddin Nur, I. Isranuri
Mesin screw press pada pabrik kelapa sawit berfungsi untuk memisahkan minyak dari buah lunak dan mengepressnya untuk menghasilkan crude oil dan nut. Pada PT. Samudera Sawit Nabati memiliki mesin screw press yang sistem perawatannya kurang maksimal. Tujuan penelitian ini adalah untuk mengetahui nilai keandalan dari mesin screw press dengan metode Reliability Block Diagram (RBD) berdasarkan identifikasi kegagalan menggunakan Failure Mode and Effect Analysis (FMEA) dan Root Cause Analysis (RCA). Berdasarkan identifikasi kegagalan metode FMEA, didapat komponen kritis pada mesin screw press yaitu thrust bearing, roller bearing dan oil seal dengan masing-masing nilai RPN sebesar 240, 240, dan 210. Pada analisa menggunakan metode RCA terdapat empat kategori yang menjadi penyebab kegagalan yaitu manusia, mesin, metode, dan lingkungan. Kemudian nilai keandalan mesin screw press menggunakan RBD pada penelitian ini didapat sebesar 79,49% pada 50 jam operasi.
{"title":"ANALISA KEANDALAN MESIN SCREW PRESS BERDASARKAN IDENTIFIKASI KEGAGALAN FAILURE MODE AND EFFECT ANALYSIS DAN ROOT CAUSE ANALYSIS","authors":"Syamsuddin Nur, I. Isranuri","doi":"10.32734/dinamis.v9i2.8433","DOIUrl":"https://doi.org/10.32734/dinamis.v9i2.8433","url":null,"abstract":"Mesin screw press pada pabrik kelapa sawit berfungsi untuk memisahkan minyak dari buah lunak dan mengepressnya untuk menghasilkan crude oil dan nut. Pada PT. Samudera Sawit Nabati memiliki mesin screw press yang sistem perawatannya kurang maksimal. Tujuan penelitian ini adalah untuk mengetahui nilai keandalan dari mesin screw press dengan metode Reliability Block Diagram (RBD) berdasarkan identifikasi kegagalan menggunakan Failure Mode and Effect Analysis (FMEA) dan Root Cause Analysis (RCA). Berdasarkan identifikasi kegagalan metode FMEA, didapat komponen kritis pada mesin screw press yaitu thrust bearing, roller bearing dan oil seal dengan masing-masing nilai RPN sebesar 240, 240, dan 210. Pada analisa menggunakan metode RCA terdapat empat kategori yang menjadi penyebab kegagalan yaitu manusia, mesin, metode, dan lingkungan. Kemudian nilai keandalan mesin screw press menggunakan RBD pada penelitian ini didapat sebesar 79,49% pada 50 jam operasi.","PeriodicalId":11432,"journal":{"name":"DINAMIS","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80435488","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}
Pub Date : 2021-12-31DOI: 10.32734/dinamis.v9i2.8443
Ardiansa Nasution, I. Isranuri, Riza Ahmad Yassin
Kampas rem saat ini sangat diperlukan seiring banyaknya permintaan akan kendaraan. Cangkang kemiri dan daun nanas merupakan limbah yang kurang dimanfaatkan yang diharapkan mampu sebagai sumber bahan baku yang ekonomis dalam pembuatan kampas rem komposit CPA ( Candlenut Pineapple Aluminium). Tujuan penelitian ini untuk mengetahui nilai performansi, stabilitas dan slip yang terjadi pada kampas rem dalam kondisi basah ( perendalam selama 40 menit ) ketika digunakan pada saat pengereman serta membandingkan suhu, jarak, dan waktu pengereman pada kondisi basah dan kering. Metode penelitian menggunakan uji jalan pada sepeda motor 110 cc dengan 5 variasi beban yaitu 4,5 kg, 5 kg, 5,5 kg, 6 kg, dan 6,5 kg. Hasil nilai performansi 0,0022 kg m2/s2 untuk torsi, waktu pengereman 3,55 s, daya pengereman 50,05 watt dan kenaikan suhu tromol 10,63 0C, merupakan nilai performansi terbesar yang terjadi pada pembebanan 6,5 Kg. nilai stabilitas adalah (-0.0056) simpangan X1 pada percepatan 0,273 m/s2 untuk pembebanan 4,5 kg. Nilai slip adalah 0,89 pada pembebanan 4,5 kg, 0,86 pada pembebanan 5 kg , 0,85 pada pembebanan 5,5 kg, 0,82 pada pembebanan 6 kg, 0,72 pada pembebanan 6,5 kg. Jarak,waktu dan suhu pengereman berbanding lurus dengan penambahan beban
{"title":"ANALISA PERFORMANSI, STABILITAS, DAN SLIP PADA KAMPAS REM TROMOL BERBAHAN KOMPOSIT CPA ( CANDLENUT PINEAPPLE ALUMINIUM ) DALAM KONDISI BASAH DENGAN METODE PENGUJIAN JALAN MENGGUNAKAN SEPEDA MOTOR 110 CC","authors":"Ardiansa Nasution, I. Isranuri, Riza Ahmad Yassin","doi":"10.32734/dinamis.v9i2.8443","DOIUrl":"https://doi.org/10.32734/dinamis.v9i2.8443","url":null,"abstract":"Kampas rem saat ini sangat diperlukan seiring banyaknya permintaan akan kendaraan. Cangkang kemiri dan daun nanas merupakan limbah yang kurang dimanfaatkan yang diharapkan mampu sebagai sumber bahan baku yang ekonomis dalam pembuatan kampas rem komposit CPA ( Candlenut Pineapple Aluminium). Tujuan penelitian ini untuk mengetahui nilai performansi, stabilitas dan slip yang terjadi pada kampas rem dalam kondisi basah ( perendalam selama 40 menit ) ketika digunakan pada saat pengereman serta membandingkan suhu, jarak, dan waktu pengereman pada kondisi basah dan kering. Metode penelitian menggunakan uji jalan pada sepeda motor 110 cc dengan 5 variasi beban yaitu 4,5 kg, 5 kg, 5,5 kg, 6 kg, dan 6,5 kg. Hasil nilai performansi 0,0022 kg m2/s2 untuk torsi, waktu pengereman 3,55 s, daya pengereman 50,05 watt dan kenaikan suhu tromol 10,63 0C, merupakan nilai performansi terbesar yang terjadi pada pembebanan 6,5 Kg. nilai stabilitas adalah (-0.0056) simpangan X1 pada percepatan 0,273 m/s2 untuk pembebanan 4,5 kg. Nilai slip adalah 0,89 pada pembebanan 4,5 kg, 0,86 pada pembebanan 5 kg , 0,85 pada pembebanan 5,5 kg, 0,82 pada pembebanan 6 kg, 0,72 pada pembebanan 6,5 kg. Jarak,waktu dan suhu pengereman berbanding lurus dengan penambahan beban","PeriodicalId":11432,"journal":{"name":"DINAMIS","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77811100","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}
The tittle of local research is The Students’ Ability In Translating English Idiom which researching the student of English letters students and graduate student in Titip Sentani Courses . The main problem of this research is to see the quality of translation English idiom result that done by fifth semester students of English letter in USTJ and Titip students course. The purpose of this study is to see whether both fifth semester of English letters and Titip students able to translate English idiom expressions of the source language to the target language (English to Indonesian), and whether students used many translation types in their translation. The method is used to take the data collection of this study are giving a set of test and questioners to the students. By using both of those procedures above, the data can be known and also students result that have translated, were analyzed to see that how far are the fifth semester students and Titip students able to transfer the core meaning of the source language to target language. There are many problems faced by students in translation process that is, students in fifth semester of English letters and Titip students found difficult words and the new idiom meaning to construct the sentence into the target language. The result of this local research show that students in fifth semester and Titip graduate students used free translation, word for word translation and literal translation types in their translation. The better translation result in translation done by a big part students of Titip students course that be able to transfer the idiom from the source language into the target language which is Bahasa Indonesia by using their existing language knowledge of both these language.
{"title":"THE STUDENTS’ ABILITY IN TRANSLATING ENGLISH IDIOM","authors":"Emon Paranoan","doi":"10.58839/jd.v18i2.995","DOIUrl":"https://doi.org/10.58839/jd.v18i2.995","url":null,"abstract":" \u0000The tittle of local research is The Students’ Ability In Translating English Idiom which researching the student of English letters students and graduate student in Titip Sentani Courses . The main problem of this research is to see the quality of translation English idiom result that done by fifth semester students of English letter in USTJ and Titip students course. The purpose of this study is to see whether both fifth semester of English letters and Titip students able to translate English idiom expressions of the source language to the target language (English to Indonesian), and whether students used many translation types in their translation. The method is used to take the data collection of this study are giving a set of test and questioners to the students. By using both of those procedures above, the data can be known and also students result that have translated, were analyzed to see that how far are the fifth semester students and Titip students able to transfer the core meaning of the source language to target language. There are many problems faced by students in translation process that is, students in fifth semester of English letters and Titip students found difficult words and the new idiom meaning to construct the sentence into the target language. The result of this local research show that students in fifth semester and Titip graduate students used free translation, word for word translation and literal translation types in their translation. The better translation result in translation done by a big part students of Titip students course that be able to transfer the idiom from the source language into the target language which is Bahasa Indonesia by using their existing language knowledge of both these language.","PeriodicalId":11432,"journal":{"name":"DINAMIS","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82829188","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}
This study aims to determine and analyze the effect of service quality which consists of variables of physical evidence, reliability, responsiveness, assurance, and empathy partially and simultaneously and dominantly affect student satisfaction at the STIPER Santo Thomas Aquinas Jayapura campus. The sample in this study were students of STIPER Santo Thomas Aquinas Jayapura class of 2017, totaling 100 people. Types and sources of data used are primary and secondary data, primary data can be done by distributing questionnaires directly to students who are on campus. Secondary data in this study were obtained from data on the STIPER Santo Thomas Aquinas Jayapura campus and through documents, reports, internet, and other scientific writings. The analytical method used is the method of multiple linear regression (multi linear regression), while the hypothesis test uses t test and f test with a significant level of 5%. The results showed that the partial test (t), physical evidence, reliability, responsiveness, assurance, and empathy had a significant effect on student satisfaction. Based on the simultaneous test (F), all variables of physical evidence, reliability, responsiveness, assurance and empathy together have a significant effect on student satisfaction. The most dominant factor influencing student satisfaction is guarantee. : , , , , .
本研究旨在确定和分析由物证、可靠性、响应性、保证性和共情等变量组成的服务质量对圣托马斯·阿奎那·查亚普拉校区学生满意度的部分和主要影响。这项研究的样本是圣托马斯·阿奎那·查亚普拉大学2017届的学生，共有100人。使用的数据类型和来源是一手数据和二手数据，一手数据可以通过直接向在校学生分发问卷来完成。本研究的次要数据来自圣托马斯阿奎那大学查亚普拉校区的数据，以及文件、报告、互联网和其他科学著作。分析方法采用多元线性回归(multi linear regression)方法，假设检验采用t检验和f检验，显著水平为5%。结果表明，部分检验(t)、物证、信度、反应性、保证性和共情对学生满意度有显著影响。根据同时检验(F)，物证、信度、反应性、保证性和共情等变量共同对学生满意度有显著影响。影响学生满意度的最主要因素是保障。:，，，，。
{"title":"ANALISIS PENGARUH KUALITAS LAYANAN JASA PENDIDIKAN TERHADAP KEPUASAN MAHASISWA PADA KAMPUS STIPER SANTO THOMAS AQUINAS JAYAPURA","authors":"Ratna Luciana Resubun","doi":"10.58839/jd.v18i2.968","DOIUrl":"https://doi.org/10.58839/jd.v18i2.968","url":null,"abstract":"This study aims to determine and analyze the effect of service quality which consists of variables of physical evidence, reliability, responsiveness, assurance, and empathy partially and simultaneously and dominantly affect student satisfaction at the STIPER Santo Thomas Aquinas Jayapura campus. \u0000The sample in this study were students of STIPER Santo Thomas Aquinas Jayapura class of 2017, totaling 100 people. Types and sources of data used are primary and secondary data, primary data can be done by distributing questionnaires directly to students who are on campus. Secondary data in this study were obtained from data on the STIPER Santo Thomas Aquinas Jayapura campus and through documents, reports, internet, and other scientific writings. The analytical method used is the method of multiple linear regression (multi linear regression), while the hypothesis test uses t test and f test with a significant level of 5%. \u0000The results showed that the partial test (t), physical evidence, reliability, responsiveness, assurance, and empathy had a significant effect on student satisfaction. Based on the simultaneous test (F), all variables of physical evidence, reliability, responsiveness, assurance and empathy together have a significant effect on student satisfaction. The most dominant factor influencing student satisfaction is guarantee. \u0000 \u0000: , , , , .","PeriodicalId":11432,"journal":{"name":"DINAMIS","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90867463","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}
This study aimed to determine the measured effect of strategy and empowerment on increasing income. The population in this study were all cooperatives registered with the Jayapura City Industry, Trade, and Cooperatives Service. Sampling using the purposive sampling method based on recommendations from the relevant agencies to obtain a total sample of 4 cooperatives—data collection techniques using a questionnaire. The analytical method used in this study is instrument analysis, classical assumption analysis, and hypothesis analysis using the SPSS 26 program. The results of this study state that strategy and empowerment partially do not affect increasing income and that simultaneous research on process and empowerment research does not affect increasing income.
{"title":"PENGARUH STRATEGI PEMBERDAYAAN DINAS PERINDUSTRAN, PERDAGANGAN KOPERASI TERHADAP PENINGKATAN PENDAPATAN UMKM KOPERASI DI KOTA JAYAPURA","authors":"Meity Lado, Gratiana Deodata","doi":"10.58839/jd.v18i2.1011","DOIUrl":"https://doi.org/10.58839/jd.v18i2.1011","url":null,"abstract":"This study aimed to determine the measured effect of strategy and empowerment on increasing income. The population in this study were all cooperatives registered with the Jayapura City Industry, Trade, and Cooperatives Service. Sampling using the purposive sampling method based on recommendations from the relevant agencies to obtain a total sample of 4 cooperatives—data collection techniques using a questionnaire. The analytical method used in this study is instrument analysis, classical assumption analysis, and hypothesis analysis using the SPSS 26 program. The results of this study state that strategy and empowerment partially do not affect increasing income and that simultaneous research on process and empowerment research does not affect increasing income.","PeriodicalId":11432,"journal":{"name":"DINAMIS","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82836226","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}
Kunci keuntungan dari turbocharger adalah alat ini menawarkan sebuah peningkatan yang cukup banyak dalam tenaga mesin hanya dengan sedikit menambah berat. Tujuan kajian teoritis ini adalah untuk mendapatkan parameter termodinamika mesin bensin tanpa dan dengan penggunaan turbocharger, mendapatkan performansi mesin bensin tanpa dan dengan penggunaan turbocharger, dan mendapatkan daya dan putaran turbin gas dan kompresor pada turbocharger. Dalam kajian teoritis ini menggunakan data spesifikasi teknis mesin mobil tipe 3SZ-VE. Hasil analisa termodinamika daya bersih Wnett dengan penggunaan turbocharger meningkat sebanyak 20,29% dibandingkan tanpa penggunaan turbocharger. Performansi mesin tanpa turbocharger diperoleh mep sebesar 2691,906 kPa, Pi pada putaran 4400 rpm sebesar 147,5613 kW, Ps sebesar 65,09 kW, sfc sebesar 292,675 gram/kW.jam, ηm sebesar 44,11%, dan ηv sebesar 98,46%. Performansi dengan turbocharger diperoleh mep sebesar 3238,314 kPa, Pi pada putaran 4400 rpm sebesar 177,5136 kW, Ps sebesar 65,09 kW, sfc sebesar 355,379 gram/kW.jam, ηm sebesar 36,66% dan ηv sebesar 98,45%. Daya turbocharger sebesar 3,54915 kW dengan putaran 59200 rpm pada saat putaran mesin bensin 6000 rpm.
{"title":"KAJIAN TEORITIS PENGGUNAAN TURBOCHARGER TERHADAP PERFORMANSI MESIN BENSIN TIPE 3SZ-VE 1500 CC DAIHATSU TERIOS","authors":"Dian Morfi Nasution, Amirsyam Nasution, Surya Darma Ginting","doi":"10.32734/dinamis.v9i2.7954","DOIUrl":"https://doi.org/10.32734/dinamis.v9i2.7954","url":null,"abstract":"Kunci keuntungan dari turbocharger adalah alat ini menawarkan sebuah peningkatan yang cukup banyak dalam tenaga mesin hanya dengan sedikit menambah berat. Tujuan kajian teoritis ini adalah untuk mendapatkan parameter termodinamika mesin bensin tanpa dan dengan penggunaan turbocharger, mendapatkan performansi mesin bensin tanpa dan dengan penggunaan turbocharger, dan mendapatkan daya dan putaran turbin gas dan kompresor pada turbocharger. Dalam kajian teoritis ini menggunakan data spesifikasi teknis mesin mobil tipe 3SZ-VE. Hasil analisa termodinamika daya bersih Wnett dengan penggunaan turbocharger meningkat sebanyak 20,29% dibandingkan tanpa penggunaan turbocharger. Performansi mesin tanpa turbocharger diperoleh mep sebesar 2691,906 kPa, Pi pada putaran 4400 rpm sebesar 147,5613 kW, Ps sebesar 65,09 kW, sfc sebesar 292,675 gram/kW.jam, ηm sebesar 44,11%, dan ηv sebesar 98,46%. Performansi dengan turbocharger diperoleh mep sebesar 3238,314 kPa, Pi pada putaran 4400 rpm sebesar 177,5136 kW, Ps sebesar 65,09 kW, sfc sebesar 355,379 gram/kW.jam, ηm sebesar 36,66% dan ηv sebesar 98,45%. Daya turbocharger sebesar 3,54915 kW dengan putaran 59200 rpm pada saat putaran mesin bensin 6000 rpm.","PeriodicalId":11432,"journal":{"name":"DINAMIS","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76879770","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}
Pub Date : 2021-12-01DOI: 10.32734/dinamis.v9i2.7949
Kevin V Simbolon, Himsar Ambarita
Air bersih sangat berpengaruh didalam kehidupan. Kebutuhan akan air bersih selalu bertambah karena penggunaannya di berbagai bidang,seperti bidang pertanian, industri, dan populasi. Untuk mencegah terjadinya kekurangan air, sangat penting untuk memenuhi kebutuhan dari setiap sektor yang ada. Tenaga surya/energi matahari (sumber energi terbarukan) dalam bentuk penyulingan adalah salah satu teknologi yang paling menjanjikan, sederhana, dan ekonomis untuk pemurnian garam dan air payau Dalam penelitian skripsi ini, akan mengkaji dan membandingkan teknologi penyulingan air laut/desalinasi sistem pasif kemiringan ganda dengan penambahan solar kolektor dengan air yang dialiri oleh pompa DC bertenaga surya dari photovoltaic.
{"title":"STUDI EKSPERIMENTAL DISTILASI AIR LAUT TENAGA SURYA KEMIRINGAN GANDA SISTEM AKTIF DAN PASIF","authors":"Kevin V Simbolon, Himsar Ambarita","doi":"10.32734/dinamis.v9i2.7949","DOIUrl":"https://doi.org/10.32734/dinamis.v9i2.7949","url":null,"abstract":"Air bersih sangat berpengaruh didalam kehidupan. Kebutuhan akan air bersih selalu bertambah karena penggunaannya di berbagai bidang,seperti bidang pertanian, industri, dan populasi. Untuk mencegah terjadinya kekurangan air, sangat penting untuk memenuhi kebutuhan dari setiap sektor yang ada. Tenaga surya/energi matahari (sumber energi terbarukan) dalam bentuk penyulingan adalah salah satu teknologi yang paling menjanjikan, sederhana, dan ekonomis untuk pemurnian garam dan air payau Dalam penelitian skripsi ini, akan mengkaji dan membandingkan teknologi penyulingan air laut/desalinasi sistem pasif kemiringan ganda dengan penambahan solar kolektor dengan air yang dialiri oleh pompa DC bertenaga surya dari photovoltaic.","PeriodicalId":11432,"journal":{"name":"DINAMIS","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74502729","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}
Limestone mining owned by CV Thiak, which is located in the Ardipura II Jayapura city, has been operating for a long time. However, the utilization of limestone is only used as a mixed material in construction such as offices, schools, brdges and others. One sample of the use og limestone is a raw material for making cement. This study aims to determine the chemical content of limestone belonging to CV Thiak so that it can also be used as a raw material for making cement. The research stage is at the beginning with initial of reaserch location and mapping to determine the coordinates of the sampling location. Samples were taken at two different locations. Next, the stage of taking limestone as a sample for testing. The next stage is the description of the limestone to determine of type of limestone. The stage of sending limestone samples to the Mineral Engineering Laboratory in Bandung city to determine the chemical content contained in the sample. The last stage is the analysis of chemical parameters as data from laboratory test using the X-Ray Fluoresence method. Some of the chemical parameters analyzed were CaCO3, CaO, MgO, Al2O3, Fe2O3 and SiO2. From the results of the analysis, it is known that the two limestone sample belonging to CV Thiak have very high CaCO3 content. The CaCO3 at the first point has a level of 98,78 %. Meanwhile, the sample at the second point has a CaCO3 content of 98,38 %. For levels of CaO, the first point is 55,35 % and the second point is 55,13 %. By looking at the value of the content of CaCO3 and CaO, the quality of CV Thiak’s limestone is very good and meets the standars as cement raw materials, according to Portland cement standards
CV Thiak拥有的石灰石矿山位于Ardipura II Jayapura市，已经运营了很长时间。然而，石灰石的利用仅作为混合材料用于建筑，如办公室，学校，桥梁等。石灰石是制造水泥的原料之一。本研究旨在确定属于CV Thiak的石灰石的化学含量，以便它也可以用作制造水泥的原料。研究阶段是研究位置的初始化和测绘，以确定采样位置的坐标。样本取自两个不同的地点。接下来是取石灰石作为样品进行测试的阶段。下一阶段是石灰石的描述，以确定石灰石的类型。将石灰石样品送到万隆市矿物工程实验室，以确定样品中所含的化学成分。最后一个阶段是使用x射线荧光法分析化学参数作为实验室测试的数据。分析了CaCO3、CaO、MgO、Al2O3、Fe2O3和SiO2等化学参数。从分析结果可知，属于CV Thiak的两种石灰石样品具有非常高的CaCO3含量。第一点的CaCO3浓度为98.78%。同时，第二点样品的CaCO3含量为98.38%。对于CaO水平，第一个点是55.35%，第二个点是55.13%。从CaCO3和CaO的含量值来看，CV Thiak石灰石的质量非常好，符合波特兰水泥标准作为水泥原料的标准
{"title":"UJI PARAMETER KIMIA BATU GAMPING SEBAGAI BAHAN BAKU SEMEN PADA LOKASI PENAMBANGAN CV THIAK KELURAHAN ARDIPURA KOTA JAYAPURA","authors":"A. Rumabar, Rolling Swempry Gaspersz","doi":"10.58839/jd.v18i2.1000","DOIUrl":"https://doi.org/10.58839/jd.v18i2.1000","url":null,"abstract":"Limestone mining owned by CV Thiak, which is located in the Ardipura II Jayapura city, has been operating for a long time. However, the utilization of limestone is only used as a mixed material in construction such as offices, schools, brdges and others. One sample of the use og limestone is a raw material for making cement. This study aims to determine the chemical content of limestone belonging to CV Thiak so that it can also be used as a raw material for making cement. The research stage is at the beginning with initial of reaserch location and mapping to determine the coordinates of the sampling location. Samples were taken at two different locations. Next, the stage of taking limestone as a sample for testing. The next stage is the description of the limestone to determine of type of limestone. The stage of sending limestone samples to the Mineral Engineering Laboratory in Bandung city to determine the chemical content contained in the sample. The last stage is the analysis of chemical parameters as data from laboratory test using the X-Ray Fluoresence method. Some of the chemical parameters analyzed were CaCO3, CaO, MgO, Al2O3, Fe2O3 and SiO2. From the results of the analysis, it is known that the two limestone sample belonging to CV Thiak have very high CaCO3 content. The CaCO3 at the first point has a level of 98,78 %. Meanwhile, the sample at the second point has a CaCO3 content of 98,38 %. For levels of CaO, the first point is 55,35 % and the second point is 55,13 %. By looking at the value of the content of CaCO3 and CaO, the quality of CV Thiak’s limestone is very good and meets the standars as cement raw materials, according to Portland cement standards","PeriodicalId":11432,"journal":{"name":"DINAMIS","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83604313","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}
The development of information technology has penetrated in all joints of human life. Sosial media, which initially served only as a means of self-existence, now metamorphosed to influence a country's political climate. In the era of reform the development of the use of sosial media is very massive for the expansion of democracy. Not infrequently his presence makes democracy always present paradoxical. The purpose of this study is to find out the Utility of Sosial Media in Improving Political Literacy of Jayapura University of Science and Technology Students. As well as knowing how much sosial media provides Utility in Improving Student Political Literacy. This research uses a quantitative approach whose research procedures produce descriptive data in the form of numbers that are then spelled out with words that get a clear picture of the observed behavioral tendencies. The results showed that 24% of respondents had an interest and interest in listening and improving their literacy through sosial media. Most respondents expressed little interest in discussions about politics (76%). Listening to these results it can be concluded that the utility of sosial media in improving the political literacy of USTJ students is still lacking. The importance of political education for students is a preference to help and provide a basic understanding to understand the dynamics of government politics in local and global contexts.
{"title":"UTILITAS MEDIA SOSIAL DALAM PENINGKATAN LITERASI POLITIK MAHASISWA UNIVERSITAS SAINS DAN TEKNOLOGI JAYAPURA”","authors":"Bonefasius Bao, Putri Anastasya Samosir","doi":"10.58839/jd.v18i2.923","DOIUrl":"https://doi.org/10.58839/jd.v18i2.923","url":null,"abstract":"The development of information technology has penetrated in all joints of human life. Sosial media, which initially served only as a means of self-existence, now metamorphosed to influence a country's political climate. In the era of reform the development of the use of sosial media is very massive for the expansion of democracy. Not infrequently his presence makes democracy always present paradoxical. \u0000The purpose of this study is to find out the Utility of Sosial Media in Improving Political Literacy of Jayapura University of Science and Technology Students. As well as knowing how much sosial media provides Utility in Improving Student Political Literacy. This research uses a quantitative approach whose research procedures produce descriptive data in the form of numbers that are then spelled out with words that get a clear picture of the observed behavioral tendencies. \u0000The results showed that 24% of respondents had an interest and interest in listening and improving their literacy through sosial media. Most respondents expressed little interest in discussions about politics (76%). Listening to these results it can be concluded that the utility of sosial media in improving the political literacy of USTJ students is still lacking. The importance of political education for students is a preference to help and provide a basic understanding to understand the dynamics of government politics in local and global contexts.","PeriodicalId":11432,"journal":{"name":"DINAMIS","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90206526","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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