Jurnal Sains Teknologi Lingkungan最新文献_第9页

Kondisi Terkini Presentase Tutupan Terumbu Pada Masa Pandemi Covid-19 di Gili Air, Taman Wisata Perairan Gili Matra, Nusa Tenggara Barat 努萨西南方吉里马泰拉海域Gili water旅游公园，corvid -19大流行期间珊瑚礁覆盖的最新情况

Jurnal Sains Teknologi Lingkungan Pub Date : 2021-12-25 DOI: 10.29303/jstl.v7i2.276

Nurliah Buhari, Mahardika Rizqi Himawan, Edwin Jefri, P. Paryono, Ibadur Rahman, A. Damayanti

{"title":"Kondisi Terkini Presentase Tutupan Terumbu Pada Masa Pandemi Covid-19 di Gili Air, Taman Wisata Perairan Gili Matra, Nusa Tenggara Barat","authors":"Nurliah Buhari, Mahardika Rizqi Himawan, Edwin Jefri, P. Paryono, Ibadur Rahman, A. Damayanti","doi":"10.29303/jstl.v7i2.276","DOIUrl":"https://doi.org/10.29303/jstl.v7i2.276","url":null,"abstract":"Gili Matra Aquatic Tourism Park has two conservation targets, namely biological targets and social, cultural and economic targets. Coral reef ecosystems, apart from being a conservation target, are also an attraction for tourists to visit. This research was conducted to determine the condition of the coral reef ecosystem to be used as the basis for the management of conservation areas. The research was conducted by collecting coral reef data either through surveys or secondary data from the results of previous studies. Coral reef survey using the standard Line Intercept Transect method. The survey results show that the condition of coral reefs in the utilization zone is better than the core zone. Live coral cover in the utilization zone reached 71% so it was categorized as good, while in the core zone it only reached 8% so it was categorized as bad. Coral reefs in the core zone are unable to recover even though the number of tourists has decreased during the Covid-19 pandemic. Therefore, the location of the core zone on Gili Air needs to be evaluated further so that the effectiveness of Gili Matra TWP management can be improved.\u0000 Key words: coral reefs; Gili Matra; Conservation","PeriodicalId":31853,"journal":{"name":"Jurnal Sains Teknologi Lingkungan","volume":"31 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83133880","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}

引用次数: 1

Pemanfaatan Limbah Batang Pisang Menjadi Kompos 把香蕉废料用在堆肥上

Jurnal Sains Teknologi Lingkungan Pub Date : 2021-12-25 DOI: 10.29303/jstl.v7i2.218

S. Meilani, Noveria Eka Susyani

{"title":"Pemanfaatan Limbah Batang Pisang Menjadi Kompos","authors":"S. Meilani, Noveria Eka Susyani","doi":"10.29303/jstl.v7i2.218","DOIUrl":"https://doi.org/10.29303/jstl.v7i2.218","url":null,"abstract":"Limbah organik sering menjadi permasalahan di setiap kota di Indonesia karena kuantitasnya yang terus bertambah sementara lahan tempat pembuangan akhir semakin terbatas. Sebagian besar limbah organik, yang sebetulnya berpotensi diolah menjadi kompos, langsung dibuang ke tempat pembuangan akhir. Hal tersebut juga terjadi di kota Bekasi. Limbah batang pisang yang merupakan limbah organik menimbulkan masalah karena berat dan volumenya yang besar. Pengomposan merupakan salah satu alternatif untuk mengolah limbah organik. Limbah batang pisang mengandung Karbon, Nitrogen, Fosfor, dan Kalium yang merupakan unsur penting dalam pengomposan. Penelitian ini dilakukan untuk mengetahui potensi pengolahan limbah batang pisang menjadi kompos. Proses pengomposan limbah batang pisang dilakukan selama 25 hari. Selama proses pengomposan, temperatur mengalami kenaikan hingga 45 oC. Hasil akhir menunjukkan kompos yang dihasilkan mengandung C-organik, fosfor, dan kadar air yang sesuai dengn persyaratan SNI 19-7030-2004. Kompos batang pisang juga mengandung Kalium dan Mangan meskipun konsentrasinya masih belum memenuhi persyaratan. Pengomposan limbah batang pisang memberikan dua keuntungan yaitu mengurangi jumlah limbah organik dan menghasilkan produk yang dapat dimanfaatkan sebagai pupuk. Kompos batang pisang mengandung nutrien yang bermanfaat untuk meningkatkan produktivitas tanaman.","PeriodicalId":31853,"journal":{"name":"Jurnal Sains Teknologi Lingkungan","volume":"97 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72770208","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}

引用次数: 0

Serbuk Biji Asam Jawa (Tamarin Dusindica L) untuk Pengelolaan Limbah Industri Cair Tempe (Studi Kasus Mataram) 爪哇酸籽粉(Tamarin dumedica L)用于管理Tempe工业废弃物(Mataram案例研究)

Jurnal Sains Teknologi Lingkungan Pub Date : 2021-12-25 DOI: 10.29303/jstl.v7i2.193

Leny Fitriah, Dwi Agustini

{"title":"Serbuk Biji Asam Jawa (Tamarin Dusindica L) untuk Pengelolaan Limbah Industri Cair Tempe (Studi Kasus Mataram)","authors":"Leny Fitriah, Dwi Agustini","doi":"10.29303/jstl.v7i2.193","DOIUrl":"https://doi.org/10.29303/jstl.v7i2.193","url":null,"abstract":"Most of the tempe industry have not been equipped with a waste water treatment unit. It is usually a water soaked soybeans and soybean excess water is still discharged directly in the into the environment. Liquid waste industrial of tempeh contain high organic materials. One of the process for wastewater treatment is coagulation with the addition of a positively charged polyelectrolyte in tempeh wastewater as negatively charged. One of plants in Indonesia that can be used as an alternative coagulant is tamarind seeds (Tamarindus indica, L).it can be used for wastewater treatment is more economical. The aims of this experiment is to determine the optimum stirring time, optimum pH of the waste and optimum coagulant dosage for treatment of the tempeh wastewater with coagulant tamarind seed powder. The experiment studied were stirring time, the pH of thetempeh wastewater and coagulant dosage to the percentage decrease in turbidity and COD (Chemical Oxygen Demand). The variables in the experiment were stirring time (10,15, 20, 25 and 30 minutes), the pH of the waste (3; 3.5; 4; 4 and 5) and the dosage of tamarind seed powder (100, 300, 500, 700, and 900 mg / L). COD testing methods is closed reflux method by spectrophotometry and turbidity testing using Turbidimeter. The results showed that the with coagulant tamarind seed powder effectively lowered cod levels and the dryness of tempeh liquid industrial waste. The optimum pH obtained is pH 4, optimum stirring time is 25 minutes and the increase in optimum coagulant dose is 500 mg with a percentage decrease in COD levels and noise by 90.57% and 78.94%.\u0000 Key words: liquid waste; sour power; turbidity; COD","PeriodicalId":31853,"journal":{"name":"Jurnal Sains Teknologi Lingkungan","volume":"23 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85832119","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}

引用次数: 2

Pemanfaatan Limbah Plastik Dan Serbuk Gergaji Kayu Sebagai Bahan Pengisi Bambu Komposit Setempat 塑料废物和木屑作为当地复合竹子的填充物

Jurnal Sains Teknologi Lingkungan Pub Date : 2021-11-12 DOI: 10.29303/jstl.v0i0.260

I. W. Sugiartha, A. Rofaida, R. Saptaningtyas, Teti Handayani

引用次数: 0

Evaluasi Penyimpanan Spermatozoa Ayam Pada Suhu 5⁰C, 26⁰C Dengan Pengencer Infuse NaCl, Glukosa 5% dan 10% 评估精子存储温度的鸡5⁰C, 26⁰C Infuse稀释,葡萄糖5%食盐和10%

Jurnal Sains Teknologi Lingkungan Pub Date : 2021-11-05 DOI: 10.29303/jstl.v0i0.242

A. Asnawi, M. Maskur, A. Dradjat

{"title":"Evaluasi Penyimpanan Spermatozoa Ayam Pada Suhu 5⁰C, 26⁰C Dengan Pengencer Infuse NaCl, Glukosa 5% dan 10%","authors":"A. Asnawi, M. Maskur, A. Dradjat","doi":"10.29303/jstl.v0i0.242","DOIUrl":"https://doi.org/10.29303/jstl.v0i0.242","url":null,"abstract":"The purpose of this study were to compare the quality of spermatozoa stored at 26⁰C, 5⁰C using diluents of NaCl, 10% glucose and 5% glucose. The spermatozoa of a rooster was collected and divided into 6 parts, each 2 tubes diluted in a ratio of 1:1 using NaCl, Glucose5% and Glucose 10%, then each 3 tubes with different diluents were stored at 26⁰C and 5⁰C. Observations of motility, viability and abnormalities of spermatozoa were carried out half an hour, 1 hour after dilution, followed every 2 hours until the ninth hours. The results showed that spermatozoa stored for 9 hours at a temperature of 26⁰C with a physiological diluent of NaCl, 10% Glucose and 5% Glucose each were different (P, < 0.05) with motility 50 ± 0.0%, 42 ± 10.95. % and 34±8.94%, respectively. At storage temperature of 5⁰C for 9 hours, physiological NaCl, 10% glucose and 5% glucose were significantly different (P<0.05) with motility 58.00±10.95%, 46.00±8.94% and 38.00±, respectively. 10.95% in a row. The viability of spermatozoa at 26⁰C storage with 5% glucose diluent was better than 10% glucose and physiological NaCl (P<0.05), 58.93±1.27%, 42.93±1.48% and 33.43±1.27% , while the physiological NaCl diluent and 10% glucose were not significantly different (P>0.05). At 5⁰C storage the viability of spermatozoa in the three diluents was not significantly different, with values of Glucose 10%, Glucose 5% and physiological NaCl 52.57±5.15%, 52.21±5.02% and 48.14±8.09%, respectively. Spermatozoa abnormalities at storage temperature 26⁰C and 5⁰C for 9 hours using physiological NaCl diluent, 5% glucose and 10% glucose, were not significantly different and varied between 5 to 10%. Finally, it can be concluded that at room temperature storage less than 4 hours the quality of spermatozoa was better with 5% glucose diluent, while for cold storage beyond 4 hours the quality of spermatozoa with NaCl diluent was higher","PeriodicalId":31853,"journal":{"name":"Jurnal Sains Teknologi Lingkungan","volume":"167 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80494979","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}

引用次数: 0

Evaluasi Kualitas Spermatozoa Ayam Brahma, Cochin dan Bangkok Sebagai Dasar Penerapan Teknologi Inseminasi Buatan pada Ayam Kampung 对梵天、科钦和曼谷的精子质量评估是将人工授精技术应用于家禽的基础

Jurnal Sains Teknologi Lingkungan Pub Date : 2021-11-05 DOI: 10.29303/jstl.v0i0.250

A. Asnawi, Budi Indarsih, D. Haryani, Sukartha Jaya, Maya Nachida, A. S. Dradjat

{"title":"Evaluasi Kualitas Spermatozoa Ayam Brahma, Cochin dan Bangkok Sebagai Dasar Penerapan Teknologi Inseminasi Buatan pada Ayam Kampung","authors":"A. Asnawi, Budi Indarsih, D. Haryani, Sukartha Jaya, Maya Nachida, A. S. Dradjat","doi":"10.29303/jstl.v0i0.250","DOIUrl":"https://doi.org/10.29303/jstl.v0i0.250","url":null,"abstract":"Research on the evaluation of the spermatozoa quality of Brahma, Cochin and Bangkok chickens as the basis for the application of artificial insemination technology in native chickens has been carried out. The purpose of this study was to evaluate the spermatozoa quality of Brahma, Cochin and Bangkok rooster as the basis for determining the spermatozoa dose for artificial insemination in local chickens. method research was used a completely randomized design (CRD) with three treatments, that is: Brahma, Cochin and Bangkok rooster. Each treatment was repeated five times. Cement storage is carried out by inserting an artificial vagina into the cloaca of the rooster and stimulating it to climb the hen. The collected sperm were analyzed at the Animal Reproduction Laboratory, Faculty of Animal Science, Mataram University. The variables observed included motility, viability and morphology of spermatozoa. The results of studied that the spermatozoa motility of Brahma, Chicin and Bangkok rooster were 72 ± 2.74%. 74 ± 2.24% and 73 ± 2.74% (P> 0.05) respectively; The spermatozoan viability of Brahma rooster and Bangkok rooster was 99.2 ± 1.30%, 99.4 ± 0.55% and 99.2 ± 1.10% (P>0.05)respectively. The spermatozoan morphology of brahma rooster, chicin rooster and Bangkok rooster was 94.6 ± 2.30%, 94.4 ± 2.70% and 97.4 ± 2.07% (P> 0.05), respectively. Cochin rooster and Bangkok rooster respectively, 62.6 ± 7.92 x 107, 57 ± 5.83 x107 , and 65.2 ± 12.28 x107, respectively. The results of the study concluded that Brahma, Cochin and Bangkok rooster had good sperm quality and could be able to used in artificial insemination of Kampung hens.","PeriodicalId":31853,"journal":{"name":"Jurnal Sains Teknologi Lingkungan","volume":"64 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83070593","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}

引用次数: 0

Potensi Kerabang Telur dalam Pakan Ayam Ras Telur Telur 潜在的下蛋蛋壳内的产卵

Jurnal Sains Teknologi Lingkungan Pub Date : 2021-10-29 DOI: 10.29303/jstl.v0i0.281

Sumiati Sumiati, Erwan Erwan, D. K. Purnamasari, Syamsuhaidi Syamsuhaidi, Suhartini Suhartini

{"title":"Potensi Kerabang Telur dalam Pakan Ayam Ras Telur Telur","authors":"Sumiati Sumiati, Erwan Erwan, D. K. Purnamasari, Syamsuhaidi Syamsuhaidi, Suhartini Suhartini","doi":"10.29303/jstl.v0i0.281","DOIUrl":"https://doi.org/10.29303/jstl.v0i0.281","url":null,"abstract":"The aim of this research is to know potention of the egg shells mill in ration toweard eggs production and Quality of the layer chiken. This research was conducted in August 2020 at Apitaik West Lombok, laboratory of Animal nutrition Animal Husbandri Mataram Univercity and laboratory of BPTP East Nusa Tenggara. 75 of layer chiken devide into 5 treatment was PI (0% egg shells +50% yellow corn +16% rise bren and 36% KLKS consentrat), P1I (5% eggs shells +50% yellow corn +16% rise bren and 36% KLKS consentrat), P1II (7% eggs shells +50% yellow corn, 36% KLKS consentrat) +16% rise bren), 5 replicetes and each replicates use 5 layer chiken and all of treatment give iso protein and iso energy ration. The parameter in this reaserch was eggs production, feed comsumtion, feed convertion, eggs weight and eggs quality. The result of this research were analysis by varians analysis above completely randomized design (CRD). The result showed that eggs producktion, eggs weight, feed cosumtion and feed convertion non significant effect (P>0.05), but was significant effect (P<0.05) on weight and thick of eggs shell It was concluded that giving egg shells to a level of 7.5% in the feed had enough potential to increase egg production and quality of laying hens with relatively good feed efficiency. ","PeriodicalId":31853,"journal":{"name":"Jurnal Sains Teknologi Lingkungan","volume":"138 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78473453","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}

引用次数: 0

Penampilan Vegetatif Tiga Genotipe Kedelai Berbiji Besar Pada Kondisi Stres Genangan 在水坑压力条件下，植物是三种大种子大豆品种

Jurnal Sains Teknologi Lingkungan Pub Date : 2021-10-29 DOI: 10.29303/jstl.v0i0.266

Kisman Kisman, Farid Hemon, S. Sumarjan, S. Dewi

{"title":"Penampilan Vegetatif Tiga Genotipe Kedelai Berbiji Besar Pada Kondisi Stres Genangan","authors":"Kisman Kisman, Farid Hemon, S. Sumarjan, S. Dewi","doi":"10.29303/jstl.v0i0.266","DOIUrl":"https://doi.org/10.29303/jstl.v0i0.266","url":null,"abstract":"ABSTRACTThis study aims to determine the vegetative appearance of three genotypes of large-seeded soybean under puddle stress. The Experimental method was used and the plastic buckets as the experimental units were arranged using a Split Plot Design. The main plot was the stress factor (S) consisting of normal conditions (S0) and puddle stress (S1), and the subplot was the genotype factor (G) consisting of G1 (KH1), G2 (Argomulyo), and G2 (Grobogan). Each genotype was repeated four times. The observed variables were plant height, number of leaves, leaf area, number of productive branches, specific leaf weight, root/shoot dry weight ratio. The results showed that there were significantly differences in the appearance of the vegetative characters of the three genotypes of large seeded soybean under puddle stress conditions, especially on plant height, leaf area, plant dry weight, and shoot dry weight. Under puddle stress conditions, KH1 showed the highest of the plant height, root dry weight, and shoot dry weight. Argomulyo showed the highest of the leaf area, while Grobogan did not show as a tolerant variety under puddle stress conditions. ","PeriodicalId":31853,"journal":{"name":"Jurnal Sains Teknologi Lingkungan","volume":"61 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82579337","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}

引用次数: 0

Kajian Kualitas Pelayanan Menuju Peningkatan Kepuasan Pelanggan Eksternal Fakultas Pertanian Universitas Mataram 服务质量研究增加了马塔兰大学农业学院的外部客户满意度

Jurnal Sains Teknologi Lingkungan Pub Date : 2021-10-29 DOI: 10.29303/jstl.v0i0.243

Tajidan Tajidan, A. Anwar, Hery Haryanto, Bambang Dipokusumo

{"title":"Kajian Kualitas Pelayanan Menuju Peningkatan Kepuasan Pelanggan Eksternal Fakultas Pertanian Universitas Mataram","authors":"Tajidan Tajidan, A. Anwar, Hery Haryanto, Bambang Dipokusumo","doi":"10.29303/jstl.v0i0.243","DOIUrl":"https://doi.org/10.29303/jstl.v0i0.243","url":null,"abstract":"The purpose of this study was to measure the service quality of the implementing unit of higher education institutions, to measure the level of external customer satisfaction, and to analyze the relationship between service quality and external customer satisfaction levels. To achieve these objectives, research was carried out by combining observation methods, distributing questionnaires to 200 external customers, focus group discussions, and public consultations. As the unit of analysis in this study, external customers consist of parents of students, alumni, graduate users, and cooperation partners. The collected data were analyzed using descriptive statistical analysis, and non-parametric statistical analysis, namely Spearman rank correlation. The results showed: the service quality of higher education implementing units is identical to the level of satisfaction of external customers; achievement of the level of external customer satisfaction is from good to very good; external customer satisfaction of alumni and graduate users is in a good position, while external customers of students' parents and cooperation partners are in a very good position. ","PeriodicalId":31853,"journal":{"name":"Jurnal Sains Teknologi Lingkungan","volume":"15 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86840021","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}

引用次数: 0

Kekerasan Produk Metalurgi Serbuk Berbahan Limbah Aluminium dengan Metode Kompaksi Bertahap 用渐进的压缩方法分解铝废物冶金产品

Jurnal Sains Teknologi Lingkungan Pub Date : 2021-10-29 DOI: 10.29303/jstl.v0i0.252

Igak Chatur Adhi WA, Anak Agung Alit Triadi, M. Wijana, I. M. Nuarsa, I. Mara

{"title":"Kekerasan Produk Metalurgi Serbuk Berbahan Limbah Aluminium dengan Metode Kompaksi Bertahap","authors":"Igak Chatur Adhi WA, Anak Agung Alit Triadi, M. Wijana, I. M. Nuarsa, I. Mara","doi":"10.29303/jstl.v0i0.252","DOIUrl":"https://doi.org/10.29303/jstl.v0i0.252","url":null,"abstract":"The product resulting from the powder metallurgy process has advantages in terms of mechanical properties and physical properties. Material engineering by mixing several types of metal powders is very possible to do. The composition of this powder metallurgical process material is a mixture of aluminum powder (80%), copper powder (15%) and silicon carbide powder (5%) by weight then compacted with a compaction load gradually, starting with a load of 3 tons, holding for 3 minutes, followed by a load of 3 tons. 4 tons were held for 3 minutes and the last 5 tons were held for 3 minutes by pre sintering 1250C. Sintering in the kitchen with temperature variations of 4500C, 5000C and 5500C and sintering time for 60 minutes. Tests carried out on the specimens were hardness tests using the Rockwell (HRF) method. The results showed that the hardness of a single material has a hardness of around 35 HRF. The average hardness of the mixed material at a sintering temperature of 4500C is 80 HRF. The hardness of the mixed material at a sintering temperature of 5000C on average is 74 HRF. Meanwhile, the hardness of the mixed material at a sintering temperature of 5500C averaged 52 HRF. It can be concluded that the application of heat at the time of compaction and the selection of the sintering temperature greatly affect the hardness of the product resulting from the powder metallurgy process. ","PeriodicalId":31853,"journal":{"name":"Jurnal Sains Teknologi Lingkungan","volume":"63 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85326768","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}

引用次数: 2