{"title":"a PENERAPAN KIMIA FORENSIK: PENGGUNAAN POLONIUM (210PO) SEBAGAI RACUN DILIHAT DARI SEGI TOKSIKOLOGI","authors":"Endro Tri Susdarwono","doi":"10.51673/jips.v2i2.678","DOIUrl":"https://doi.org/10.51673/jips.v2i2.678","url":null,"abstract":"This study intends to provide a description of how the use of polonium-210 (210Po) as a poison in terms of toxicology. This research is a qualitative research, the type of research uses comprehensive analytic studies and analytical normative approaches. Polonium-210 is created in nuclear reactors. This element is very radioactive which if swallowed even a little is very fatal. After entering the blood tissue, the element mainly targets the liver and kidneys and bone marrow. After 210Po is absorbed into the body, the whole body is basically targeted. The dose given and the sensitivity of individual tissues determine the level of damage throughout the body. Unlike most heavy metals, 210 Po accumulates in soft tissue rather than bone. Polonium (210Po) is a producer of very active alpha particles, but only becomes toxic when entering the body. If entered into the human body, toxic effects are often fatal, even at very small doses. Most of the initial dose is quickly excreted in the feces and urine, but the rest is distributed to the soft tissues of the body.","PeriodicalId":224660,"journal":{"name":"JURNAL INOVASI PENDIDIKAN DAN SAINS","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132259453","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}
Nurani Hasanela, Nelson Gaspersz, R. Silaban, M. R. Sohilait
{"title":"PENGARUH LAMA PENYIMPANAN EKSTRAK KASAR MAKROALGA Ulva lactuca TERHADAP KESTABILAN PIGMEN FOTOSINTESIS","authors":"Nurani Hasanela, Nelson Gaspersz, R. Silaban, M. R. Sohilait","doi":"10.51673/JIPS.V1I3.441","DOIUrl":"https://doi.org/10.51673/JIPS.V1I3.441","url":null,"abstract":"Banyak kandungan senyawa kimia bermanfaat dalam makroalga yang bernilai ekonomi tinggi tetapi belum diteliti secara luas, seperti pigmen fotosintesis. Peningkatan kebutuhan pigmen fotosintesis pada dunia industri menyebabkan pencarian sumber alternatif pigmen fotosintesis masih terus dilakukan diantaranya dari makroalga. Penelitian ini bertujuan untuk mengetahuipengaruh lama penyimpanan ekstrak kasar makroalga Ulva lactuca terhadap kestabilan pigmen fotosintesis. Tahapan penelitian meliputi, isolasi pigmen fotosintesis, pemurnian menggunakan kromatografi kolom silika, karakterisasi pigmen fotosintesis dengan KLT dan spektrofotometer UV–Vis. Hasil KLT dari ekstrak kasar Ulva lactuca menunjukkan perbedaan jumlah dan jenis pigmen fotosintesis yang mencolok antara ekstrak kasar Ulva lactuca yang lansung diekstrak dan yang dibiarkan kurang lebih 3 hari. Pada hasil kromarogram menunjukkan ada 7 fraksi pigmen fotosintesis dan memiliki warna yang sangat mencolok yang diekstrak secara langsung sedangkan ekstrak kasar yang dibiarkan kurang lebih 3 hari menunjukkan hanya 5 fraksi pigmen fotosintesis dengan warna yang pucat. Fraksinasi dengan kromatografi kolom silika gel menunjukkan adanya pigmen fotosintesis sebanyak 29 fraksi. Setelah diindentifikasi dengan spektofotometer UV–Vis ada 4 fraksi utama yaitu ß-karoten, fukoxantin, klorofil a,dan feofitin a. Lama penyimpanan terhadap ekstrak kasar Ulva lactuca mempengaruhi pigmen fotosintesis secara kualitatif dan kuantitatif.","PeriodicalId":224660,"journal":{"name":"JURNAL INOVASI PENDIDIKAN DAN SAINS","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134221634","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":"DEVELOPMENT OF LEARNING MEDIA BASED ON WINDOWS PRODUCERS TO IMPROVE STUDENT METACOGNITIONAL AWARENESS","authors":"Novanie Sulastri","doi":"10.51673/JIPS.V1I3.438","DOIUrl":"https://doi.org/10.51673/JIPS.V1I3.438","url":null,"abstract":"Abstrak: Jenis penelitian ini adalah penelitian pengembangan (Research and Development). Penelitian ini bertujuan mengetahui validitas, kualitas kepraktisan dan keefektifan media pembelajaran biologi berbasis Windows Produser untuk Meningkatkan Kesadaran Metakognitif Siswa. Penelitian ini dilakukan dengan menggunakan model ADDIE yang terdiri atas 5 tahap yaitu analisis, desain, development, implementasi dan evaluasi. Data yang diperoleh dari penelitan ini terdiri dari (1) data kevalidan diperoleh melalui penilaian ahli dan praktisi, (2) data kepraktisan diperoleh melalui angket siswa, (3) data keefektifan diperoleh melalui angket siswa, (4) data kesadaran metakognitif diperoleh melalui angket instrument MAI. Hasil analisis data penelitian menunjukkan bahwa media pembelajaran biologi berbasis Windows Produser untuk Meningkatkan Kesadaran Metakognitif Siswa yang dikembangkan mencapai kriteria kualitas yakni (1) Media pembelajaran berbasis Windows Produser pada konsep system reproduksi dinyatakan memenuhi criteria kevalidan, kepraktisan, dan keefektifan. (2) Media pembelajaran berbasis Windows Produser pada konsep system reproduksi dapat meningkatkan kesadaran metakognisi siswa.","PeriodicalId":224660,"journal":{"name":"JURNAL INOVASI PENDIDIKAN DAN SAINS","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123209836","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":"THE PRAKTIKALITAS PENGEMBANGAN E-BOOK FISIKA BERBANTUAN EDMODO BERBASIS DISCOVERY LEARNING DALAM PROSES PEMBELAJARAN FISIKA","authors":"F. Ayu, Ahmad Fuzi","doi":"10.51673/JIPS.V1I3.442","DOIUrl":"https://doi.org/10.51673/JIPS.V1I3.442","url":null,"abstract":"Tujuan penelitian pengembangan ini adalah untuk mengetahui tingkat kepraktisan penggunaan e-book Fisika berbantuan edmodo berbasis discovery learning dalam prosese pembelajaran. Jenis penelitian ini adalah Research and Development (R&D). Metode yang digunakan dalam penelitian yaitu metode deskriptif dengan instrumen pengumpulan data yakni angket praktikalitas yang dinilai oleh guru. Penelitian ini dilakukan di Sekolah Menengah Atas Negeri 14 Padang Tahun Ajaran 2019/2020 pada materi gelombang mekanik. Hasil penelitian ini menunjukkan bahwa e-book Fisika berbantuan edmodo berbasis discovery learning sangat praktis digunakan dalam proses pembelajaran dengan persentase rata-rata praktikalitas sebesar 90%.","PeriodicalId":224660,"journal":{"name":"JURNAL INOVASI PENDIDIKAN DAN SAINS","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131286523","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}
Surya Pratama, Agil Al Idrus, K. Kusmiyati, D. Setiadi
{"title":"ANALISIS MISKONSEPSI PADA MATERI SISTEM REPRODUKSI SISWA KELAS XI MAN 1 LOMBOK BARAT TAHUN AJARAN 2019/2020","authors":"Surya Pratama, Agil Al Idrus, K. Kusmiyati, D. Setiadi","doi":"10.51673/JIPS.V1I3.429","DOIUrl":"https://doi.org/10.51673/JIPS.V1I3.429","url":null,"abstract":"Penelitian ini bertujuan untuk mengetahui miskonsepsi pada materi sistem reproduksi siswa Kelas XI MAN 1 Lombok Barat melalui penggunaan instrumen three tier test. Jenis penelitian ini adalah penelitian deskriptif. Populasi dalam penelitian ini adalah seluruh siswa kelas XI MAN 1 Lombok Barat (MIA, IPS dan Bahasa). Sampel penelitian ini sebanyak 60 siswa yang terdiri dari 30 siswa kelas XI MIA 1 dan 30 siswa kelas XI MIA 2. Pengambilan sampel penelitian dilakukan dengan teknik cluster sampling, yaitu teknik penentuan sampel berdasarkan perbedaan karakteristik kelas. Analisis dilakukan dengan pendekatan kuantitatif dan kualitatif menggunakan rumus persentase berdasarkan kriteria pemahaman konsep yang dicari. Hasil analisis miskonsepsi pada materi sistem reproduksi dengan menggunakan instrumen three tier test didapatkan siswa yang mengalami miskonsepsi paling banyak pada indikator 4 sebesar 83,33% (klasifikasi sangat tinggi) dan siswa yang mengalami miskonsepsi paling sedikit pada indikator 1 sebesar 68,33% (klasifikasi tinggi). Kesimpulan dari hasil penelitian menunjukkan bahwa siswa mengalami miskonsepsi sangat tinggi pada konsep pemahaman yang rendah maupun yang membutuhkan pemahaman tinggi.","PeriodicalId":224660,"journal":{"name":"JURNAL INOVASI PENDIDIKAN DAN SAINS","volume":"5 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116859028","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":"The ecosystem services of mangroves for sustainable coastal area and marine fauna in Lombok, Indonesia: A review","authors":"Pahmi Husain","doi":"10.15131/JIPS","DOIUrl":"https://doi.org/10.15131/JIPS","url":null,"abstract":"Abstract: Mangroves are one of the coastal ecosystems with high productivity, and their associated biodiversity provides a range of ecosystem services. The aerial roots of mangroves partly stabilize this environment and give a substratum on which many species of plants and animals live. Above the water, the mangrove trees and canopy provide important habitat for a wide range of species. These include birds, insects, mammals, and reptiles. Below the water, the mangrove roots are overgrown by epibionts such as tunicates, sponges, algae, and bivalves. The soft substratum in the mangroves forms a habitat for various infaunal and epifaunal species. At the same time, the space between roots provides shelter and food for motile fauna, such as prawns, crabs, and fishes. Mangrove litter is transformed into detritus, which partly supports the mangrove food web. Plankton, epiphytic algae, and microphytobenthos also form an essential basis for the mangrove food web. Due to the high abundance of food and shelter, and low predation pressure, mangroves form an ideal habitat for a variety of animal species, during part or all of their life cycles. As such, mangroves may function as nursery habitats for (commercially important) crab, prawn and fish species, and support offshore fish populations and fisheries.","PeriodicalId":224660,"journal":{"name":"JURNAL INOVASI PENDIDIKAN DAN SAINS","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122874960","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":"PERBANDINGAN ASAM ASETAT DENGAN ASAM FORMIAT SEBAGAI BAHAN PENGGUMPAL LATEKS","authors":"R. Siregar","doi":"10.51673/jips.v2i3.774","DOIUrl":"https://doi.org/10.51673/jips.v2i3.774","url":null,"abstract":"Indonesia merupakan salah satu penghasil karet terbesar. Hampir seluruh lateks kebun untuk produksi karet harus digumpalkan sebelum proses lanjut. Telah dilakukan penelitian tentang perbandingan asam asetat dengan asam formiat sebagai bahan penggumpal lateks. Pada penelitian ini bertujuan untuk membandingkan asam asetat dengan asam formiat sebagai bahan penggumpal lateks . Kedalam lateks ditambahkan arang tempurung kelapa (ukuran partikel 80 mesh) dengan berat 42 gram kemudian lateks digumpalkan dengan asam asetat dan asam formiat dengan pH 4,7. Sebagai penelitian mutu karet dilakukan dengan mengukur plastisitas awal, plastisitas retensi indeks dan viskositas mooney karet. Kesimpulannya, lateks yang digumpalkan dengan asam asetat menghasilkan karet yang lebih baik dibandingkan dengan lateks yang digumpalkan dengan asam formiat.","PeriodicalId":224660,"journal":{"name":"JURNAL INOVASI PENDIDIKAN DAN SAINS","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130751767","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}