Brick is a building material that is often used for residential walls. The bricks in this study were bricks with the addition of palm frond charcoal in the manufacturing process. The aims of this study were (1) to determine the effect of adding palm stem charcoal on the manufacture of red bricks in terms of compressive strength, water absorption (Suction rate) and apparent density (apparent density). (2) Comparing the test results with the SNI 15-2094-2000 standard. The manufacture of experimental bricks begins with adding clay with pulverized palm frond charcoal in a ratio of 100:0, 95:5, 90:10, 85:15 and 80:20, then molded, dried, burned and tested for new mechanical properties. brick. In this study, the compressive strength of bricks that enter class 100 is a ratio of 100:0 and 95:5 namely 11.75 Mpa and 10.10 Mpa, then bricks grade 50 is a ratio of 90:10 and 85:15 which is 8.08 Mpa and 6.27 Mpa. The water absorption capacity of bricks that meet the requirements of SNI 15-2094-2000 is a ratio of 100:0 and 95:5, namely 18.65% and 19.74%. The apparent density of bricks that meet the requirements of SNI 15-2094-2000 are the ratios of 100:0, 95:5, 90:10 and 85:15, which are 1.63 g/cm3, 1.54 g/cm3, 1,37 g/cm3 and 1.24 g/cm3. Bricks that meet the standards and are recommended as masonry bricks are bricks with a ratio of 95:5.
{"title":"Pengaruh Penambahan Arang Pelepah Sawit terhadap Sifat Mekanik Batu Bata Merah","authors":"Cory Dian Alfarisi, Padil Padil, Drastinawati Drastinawati, Wisrayetti Wisrayetti, Nurfatihayati Nurfatihayati, Yelmida A","doi":"10.33474/e-jbst.v8i2.498","DOIUrl":"https://doi.org/10.33474/e-jbst.v8i2.498","url":null,"abstract":"Brick is a building material that is often used for residential walls. The bricks in this study were bricks with the addition of palm frond charcoal in the manufacturing process. The aims of this study were (1) to determine the effect of adding palm stem charcoal on the manufacture of red bricks in terms of compressive strength, water absorption (Suction rate) and apparent density (apparent density). (2) Comparing the test results with the SNI 15-2094-2000 standard. The manufacture of experimental bricks begins with adding clay with pulverized palm frond charcoal in a ratio of 100:0, 95:5, 90:10, 85:15 and 80:20, then molded, dried, burned and tested for new mechanical properties. brick. In this study, the compressive strength of bricks that enter class 100 is a ratio of 100:0 and 95:5 namely 11.75 Mpa and 10.10 Mpa, then bricks grade 50 is a ratio of 90:10 and 85:15 which is 8.08 Mpa and 6.27 Mpa. The water absorption capacity of bricks that meet the requirements of SNI 15-2094-2000 is a ratio of 100:0 and 95:5, namely 18.65% and 19.74%. The apparent density of bricks that meet the requirements of SNI 15-2094-2000 are the ratios of 100:0, 95:5, 90:10 and 85:15, which are 1.63 g/cm3, 1.54 g/cm3, 1,37 g/cm3 and 1.24 g/cm3. Bricks that meet the standards and are recommended as masonry bricks are bricks with a ratio of 95:5.","PeriodicalId":388660,"journal":{"name":"Jurnal Ilmiah Biosaintropis (Bioscience-Tropic)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131215715","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 : 2023-01-21DOI: 10.33474/e-jbst.v8i2.517
Thatit Nurmawati, Yeni Kartika Sari, Joko Santosa
berjumlah 178
共计 178
{"title":"Deteksi Penanda Prognosis Kasus COVID 19: Studi Terhadap Faktor-Faktor yang Mempengaruhi Kadar D-dimer","authors":"Thatit Nurmawati, Yeni Kartika Sari, Joko Santosa","doi":"10.33474/e-jbst.v8i2.517","DOIUrl":"https://doi.org/10.33474/e-jbst.v8i2.517","url":null,"abstract":"berjumlah 178","PeriodicalId":388660,"journal":{"name":"Jurnal Ilmiah Biosaintropis (Bioscience-Tropic)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130253426","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 : 2023-01-21DOI: 10.33474/e-jbst.v8i2.408
F. Amalia, Hari Santoso, Hasan Zayadi
Javan langur population has decreased, because the natural habitat of Javan langurs is decreasing from year to year, in addition to the rampant fishing of langur for trading. In order to suppress and reduce the habitat destruction of these wild animals, an effective and sustainable land rehabilitation effort is needed by recording the types of forage plants that Javan langurs like and the behavior of Javan langurs in foraging for their food. One of the efforts made to create a natural breeding place. The purpose of this research is to determine whether there is a specific Javan langur eating behavior pattern, in addition to knowing whether there is a change in Javanese langur eating behavior towards the type of food given. This observation uses the Continuous Recording method of recording. The results obtained will be processed in a qualitative descriptive form (narrative). From the results of this study, it was found that there was a specific feeding behavior for each type of feed given based on the size of the leaves, when consuming calliandra with smaller leaves the langurs did not need to pick the leaves first, it was different when langurs ate mountain amethyst and telasih which were larger in size so they tended to picking and tearing it first to get smaller leaf size, and there is a change in the diet of the type of feed given, namely langurs tend to fight more for calliandra plants because calliandra has fruit as well as flowers and also smaller leaf size making it easier for langurs to eat it . This is also shown by the higher number of chews on calliandra, which is 25 chews for 10 seconds.
{"title":"Perilaku Makan Lutung Jawa (Trachypithecus auratus) di Pusat Rehabilitasi Lutung Jawa (JLC) Coban Talun Kota Batu","authors":"F. Amalia, Hari Santoso, Hasan Zayadi","doi":"10.33474/e-jbst.v8i2.408","DOIUrl":"https://doi.org/10.33474/e-jbst.v8i2.408","url":null,"abstract":"Javan langur population has decreased, because the natural habitat of Javan langurs is decreasing from year to year, in addition to the rampant fishing of langur for trading. In order to suppress and reduce the habitat destruction of these wild animals, an effective and sustainable land rehabilitation effort is needed by recording the types of forage plants that Javan langurs like and the behavior of Javan langurs in foraging for their food. One of the efforts made to create a natural breeding place. The purpose of this research is to determine whether there is a specific Javan langur eating behavior pattern, in addition to knowing whether there is a change in Javanese langur eating behavior towards the type of food given. This observation uses the Continuous Recording method of recording. The results obtained will be processed in a qualitative descriptive form (narrative). From the results of this study, it was found that there was a specific feeding behavior for each type of feed given based on the size of the leaves, when consuming calliandra with smaller leaves the langurs did not need to pick the leaves first, it was different when langurs ate mountain amethyst and telasih which were larger in size so they tended to picking and tearing it first to get smaller leaf size, and there is a change in the diet of the type of feed given, namely langurs tend to fight more for calliandra plants because calliandra has fruit as well as flowers and also smaller leaf size making it easier for langurs to eat it . This is also shown by the higher number of chews on calliandra, which is 25 chews for 10 seconds.","PeriodicalId":388660,"journal":{"name":"Jurnal Ilmiah Biosaintropis (Bioscience-Tropic)","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122948652","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 : 2023-01-21DOI: 10.33474/e-jbst.v8i2.519
Yuswa Istikomayanti, Riantina Fitra Aldya, Elga Djarawula, Adriana Rewa Malo
Traditional knowledge seems to be the opposite of modern knowledge. In this position, the knowledge of the local community, especially in weaving works, is the result of processing the ancestral knowledge of the Sumba tribe in East Nusa Tenggara. This study aims to describe the potential of woven ikat not only as a work but also the culture of the people of Sumba as a teaching resource in schools. Ethnoscience is expected to become a bridge between science and culture approaches for students in the 21st century. This research is a type of ethnographic research with an interpretive design. Several methods, namely the in-depth interview method and the literature review method. In-depth interviews were used to explore the potential of Ikat weaving and literature analysis as secondary data in the study of student teaching materials. The study of Ikat weaving as a source of teaching materials includes aspects of coloring techniques, weaving techniques, and ethnomathematics of weaving motifs. The results of this study serve as reference material for learning in schools not only in local content subjects but can be integrated into the core content of Science/Science as well as Mathematics and other subject areas in formal schools.
{"title":"Potensi Tenun Ikat Sebagai Sumber Belajar Berbasis Etnosains","authors":"Yuswa Istikomayanti, Riantina Fitra Aldya, Elga Djarawula, Adriana Rewa Malo","doi":"10.33474/e-jbst.v8i2.519","DOIUrl":"https://doi.org/10.33474/e-jbst.v8i2.519","url":null,"abstract":"Traditional knowledge seems to be the opposite of modern knowledge. In this position, the knowledge of the local community, especially in weaving works, is the result of processing the ancestral knowledge of the Sumba tribe in East Nusa Tenggara. This study aims to describe the potential of woven ikat not only as a work but also the culture of the people of Sumba as a teaching resource in schools. Ethnoscience is expected to become a bridge between science and culture approaches for students in the 21st century. This research is a type of ethnographic research with an interpretive design. Several methods, namely the in-depth interview method and the literature review method. In-depth interviews were used to explore the potential of Ikat weaving and literature analysis as secondary data in the study of student teaching materials. The study of Ikat weaving as a source of teaching materials includes aspects of coloring techniques, weaving techniques, and ethnomathematics of weaving motifs. The results of this study serve as reference material for learning in schools not only in local content subjects but can be integrated into the core content of Science/Science as well as Mathematics and other subject areas in formal schools.","PeriodicalId":388660,"journal":{"name":"Jurnal Ilmiah Biosaintropis (Bioscience-Tropic)","volume":"96 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125457582","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 : 2023-01-21DOI: 10.33474/e-jbst.v8i2.508
Yoni Rina Bintari, D. Wulandari
COVID-19 is a disease caused by viruses of the coronavirus class that are known to enter humans through the Angiotensin Coverting Enzyme (ACE II) receptor protein and transmembrane serine protease (TMPRSS 2). COVID-19 has become a pandemic, so it requires an agent that acts as an anti-Covid-19. Cananga odora is an herb that contains EO (Essential Oils) and is widely grown in Indonesia. EO are known to have antiviral potential.This study aims to explore the potential of EO from C.odora using a molecular docking approach by measuring its inhibition of ACE II (Q9BYF1) and TMPRSS2 (7MEQ). The inhibitory potential was calculated from the binding affinity using Pyrex Autodock Vina software. The docking results are then visualized using Biovia Discovery Studio and PyMOL. Prediction of physicochemical and pharmacokinetic profiles through pKCsm web. The docking results showed that geranyl acetate inhibited ACE II at Lys 562 with a gibs energy of -7.5 kcal. Thebest inhibition of TMPRSS2 by cedrole with energy gibs -6.2 kcal/mol via Pro 375. The active compound C. odorata has a different inhibitory mechanism from the control (chloroquine). The results of the in silico test predict the pharmacokinetic profile of EO from C.odora geranil asetat which has good absorption, distribution, metabolism and excretion values and is non-toxic, and cedrole can cross the blood brain barier.
{"title":"Skrining Potensi Essential Oil Cananga odorata dalam Penghambatannya Terhadap ACE II dan TMPRSS2 sebagai Anti Covid-19: Pendekatan In Silico","authors":"Yoni Rina Bintari, D. Wulandari","doi":"10.33474/e-jbst.v8i2.508","DOIUrl":"https://doi.org/10.33474/e-jbst.v8i2.508","url":null,"abstract":"COVID-19 is a disease caused by viruses of the coronavirus class that are known to enter humans through the Angiotensin Coverting Enzyme (ACE II) receptor protein and transmembrane serine protease (TMPRSS 2). COVID-19 has become a pandemic, so it requires an agent that acts as an anti-Covid-19. Cananga odora is an herb that contains EO (Essential Oils) and is widely grown in Indonesia. EO are known to have antiviral potential.This study aims to explore the potential of EO from C.odora using a molecular docking approach by measuring its inhibition of ACE II (Q9BYF1) and TMPRSS2 (7MEQ). The inhibitory potential was calculated from the binding affinity using Pyrex Autodock Vina software. The docking results are then visualized using Biovia Discovery Studio and PyMOL. Prediction of physicochemical and pharmacokinetic profiles through pKCsm web. The docking results showed that geranyl acetate inhibited ACE II at Lys 562 with a gibs energy of -7.5 kcal. Thebest inhibition of TMPRSS2 by cedrole with energy gibs -6.2 kcal/mol via Pro 375. The active compound C. odorata has a different inhibitory mechanism from the control (chloroquine). The results of the in silico test predict the pharmacokinetic profile of EO from C.odora geranil asetat which has good absorption, distribution, metabolism and excretion values and is non-toxic, and cedrole can cross the blood brain barier.","PeriodicalId":388660,"journal":{"name":"Jurnal Ilmiah Biosaintropis (Bioscience-Tropic)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115329743","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 : 2020-08-08DOI: 10.33474/e-jbst.v8i2.367
Octavia Shahilla Aniansyah
Water is a very important human need and no life can exist without air. Human needs are generally obtained from various sources, both from groundwater, surface water and rainwater. Ubalan is a hamlet located in Ngajum District, Malang Regency. The location is under the foot of Mount Kawi - Malang which has a natural spring and is generally channeled by the surrounding community to fill artificial ponds and also used by the community to meet their daily needs. The use of spring sources is generally very diverse, including for drinking water, fisheries, conservation and as a tourist attraction. Water indicators such as total coliform bacteria and Escherichia coli. Regarding this statement, it is necessary to carry out a microbiological test to test for total coliform and Escherichia coli bacteria at the Ubalan spring, Maguan Village, Ngajum District, Malang Regency, which is a tourist attraction location that is never empty of visitors. The research method used is survey method and descriptive laboratory analysis. To take samples of air sources carried out randomly. The test results for Total Coliform and Escherichia coli bacteria in West Sumatra Mata Air Ubalan, Maguan Village, Ngajum District, Malang Regency, showed that the MPN results index was at station 3 (0.273) station 2 (0.188) and the lowest was at station 1 (0.138). The analysis is related to the level of the presence of total coliform and E. coli bacteria with pollutant source factors that are thought to come from human activities around the source, community behavior and the distance factor between air sources and exhaust locations. Correlation of research results obtained by the presence of total coliform bacteria and Escherichia coli in the air source with the relationship of factors between the supporting bacteria showed (p value = 0.188) which means it did not have a significant effect.
{"title":"Uji Bakteri Total Coliform dan Escherichia coli Pada Sumber Mata Air Ubalan Desa Maguan Kecamatan Ngajum Kabupaten Malang","authors":"Octavia Shahilla Aniansyah","doi":"10.33474/e-jbst.v8i2.367","DOIUrl":"https://doi.org/10.33474/e-jbst.v8i2.367","url":null,"abstract":"Water is a very important human need and no life can exist without air. Human needs are generally obtained from various sources, both from groundwater, surface water and rainwater. Ubalan is a hamlet located in Ngajum District, Malang Regency. The location is under the foot of Mount Kawi - Malang which has a natural spring and is generally channeled by the surrounding community to fill artificial ponds and also used by the community to meet their daily needs. The use of spring sources is generally very diverse, including for drinking water, fisheries, conservation and as a tourist attraction. Water indicators such as total coliform bacteria and Escherichia coli. Regarding this statement, it is necessary to carry out a microbiological test to test for total coliform and Escherichia coli bacteria at the Ubalan spring, Maguan Village, Ngajum District, Malang Regency, which is a tourist attraction location that is never empty of visitors. The research method used is survey method and descriptive laboratory analysis. To take samples of air sources carried out randomly. \u0000 The test results for Total Coliform and Escherichia coli bacteria in West Sumatra Mata Air Ubalan, Maguan Village, Ngajum District, Malang Regency, showed that the MPN results index was at station 3 (0.273) station 2 (0.188) and the lowest was at station 1 (0.138). The analysis is related to the level of the presence of total coliform and E. coli bacteria with pollutant source factors that are thought to come from human activities around the source, community behavior and the distance factor between air sources and exhaust locations. Correlation of research results obtained by the presence of total coliform bacteria and Escherichia coli in the air source with the relationship of factors between the supporting bacteria showed (p value = 0.188) which means it did not have a significant effect.","PeriodicalId":388660,"journal":{"name":"Jurnal Ilmiah Biosaintropis (Bioscience-Tropic)","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127451156","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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