Jurnal Pendidikan Matematika dan Sains最新文献

{"title":"Uji Korelasi Karakter Kreativitas terhadap Hasil Belajar Siswa Kelas VIII SMPN 08 Kota Jambi","authors":"Weni Sukarni, Prita Monalisa","doi":"10.21831/jpms.v7i2.25213","DOIUrl":"https://doi.org/10.21831/jpms.v7i2.25213","url":null,"abstract":"Penelitian ini betujuan untuk mengetahui hubungan antara angket kreativitas terhadap hasil belajar siswa, apakah memiliki hubungan atau tidak. Penelitian ini menggunakan metode penelitian kuantitatif deskriptif dan asosiatif dengan teknik analisis korelasi. Berdasarkan hasil dapat diketahui bahwa angket dan nilai memiliki sig. (2-tailed) 0,000 dan Pearson Correlation 0,928. Jadi, dapat disimpulkan ada korelasi antara angket dan nilai kelas VIII C dan VIII E SMPN 08 Kota Jambi karena nilai sig. (2-tailed) 0,05 dan koefisien korelasi berada pada interval 0,80-1,00. Jadi, hubungan antara angket dan nilai tersebut dikategorikan sangat kuat. Kesimpulan dari penelitian ini bahwa adanya hubungan mengenai angket karakter kreativitas siswa terhadap hasil belajar siswa kelas VIII C dan VIII E SMP N 08 Kota Jambi pada tentang konsep IPA Terpadu pada materi Tata Surya. Artinya karakter kreativitas siswa sangat diperlukan oleh siswa dalam penerapan materi yang telah dipelajari di sekolah, karena kreativitas merupakan salah satu faktor penting dalam menentukan hasil belajar peserta didik.","PeriodicalId":31765,"journal":{"name":"Jurnal Pendidikan Matematika dan Sains","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47024631","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":"Efek Kosentrasi Asam Fosfat (H3PO4) pada Sifat Listrik Reduced Gra-phene Oxide (rGO)","authors":"Miftahul Husnah, Akfiny Aimon, F. Iskandar","doi":"10.5614/jms.2019.24.2.4","DOIUrl":"https://doi.org/10.5614/jms.2019.24.2.4","url":null,"abstract":"Pada penelitian ini telah dilakukan sintesis rGO dengan variasi penambahan asam fosfat yang mempengaruhi sifat listrik dari sampel yang diperoleh. Karakterisasi yang digunakan pada penelitian ini yaitu Fourier Tansform Infrared Spectroscopy (FT-IR), X-Ray Difrractometer (XRD), Energy Dispersive Spectrometer (EDS), dan 4 point probe. Dari hasil XRD dan FT-IR menun-jukkan rGO yang disintesis tanpa penambahan asam fosfat (rGO1) ataupun dengan penambahan asam fosfat (H3PO4) (rGO2) telah berhasil disintesis. Berdasarkan karakterisasi EDS diperoleh jenis atom pada permukaan sampel pada rGO1 terdiri dari 7,27% atom O sedangkan pada sampel rGO2 terdiri dari 6,36% atom O serta sisanya merupakan atom C. Pengukuran 4 Point Probe menunjukkan rGO1 memiliki konduktivitas listrik ~6 kali lebih baik dibandingkan konduktivitas listrik pada rGO2. Hasil ini menunjukkan penambahan asam fosfat membantu memperbaiki sifat listrik dari reduced graphene oxide (rGO).","PeriodicalId":31765,"journal":{"name":"Jurnal Pendidikan Matematika dan Sains","volume":"39 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79224769","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":"Prospect of Tagetes erecta Linn. In Controlling Sweet Potato Weevil (Cylas formicarius Fabr.)","authors":"Wina Supriani, T. Wardini","doi":"10.5614/jms.2018.23.1.5","DOIUrl":"https://doi.org/10.5614/jms.2018.23.1.5","url":null,"abstract":"Sweet potato (Ipomoea batatas Poir.) is a root vegetable with a number of nutrient categories for the health benefits. In sweet potato cultivation, farmers often experience crop failure, one of which is due to pest attack caused by Cylas formicarius Fabr. weevil. Tagetes erecta Linn. (Tagetes) has been reported to have an insecticide effect on various pests that attack plants. The aim of this research was to evaluate the effect of Tagetes plant on the growth of I. batatas var. rancing (ubi cilembu) plant and the intensity of weevil attacks on ubi cilembu cultivation. The experiment was conducted in Desa Cigendel, Kabupaten Sumedang, West Java using randomized complete design. Treatments included TC (plot with Tagetes and Cylas), T (plot with Tagetes only), and C (plot with Cylas only) and K (plot without Tagetes and Cylas) as controls. Tagetes were planted around each plot and in each plot 20 Cylas/plant were introduced. Results showed that all treatments had an effect on the growth of sweet potato. The presence of Tagetes also reduced the intensity of pest attacks. The intensity of weevil attack on the plot of K, T, TC, and C were 34%; 9%; 16% and 62%, respectively, with an average number of Cylas per tuber were 38 larvae and 8 imago; 14 larvae and 6 imago; 15 larvae and 8 imago; and 72 larvae and 23 imago, respectively. Tuber dry weight in plot where Tagetes was added, showed an increase compared to control (T: 46.69 g, TC: 42.66 g compared to K: 37.69 g) while in plot C, tuber dry weight showed the lowest value of 34.90 g. Phytochemical assay showed that different plant organ contained different type of secondary metabolite, but only flower contained all secondary metabolites including alkaloids, terpenoids, phenols, tannins, flavonoids, and coumarin. GC-MS analysis on Tagetes root, shoot and flower extract showed that α-terthienyl (2, 2 ': 5 ', 2 ''-Terthiophene), which has been widely reported as one of the active compounds with insecticidal effect, present only in root and flower. From this study, it can be concluded that planting Tagetes around sweet potato plants can reduce the effect of Cylas on the growth of sweet potato as well as the intensity of pest attacks and α-terthienyl compound is likely to play a role in the reduction of pest attacks.","PeriodicalId":31765,"journal":{"name":"Jurnal Pendidikan Matematika dan Sains","volume":"47 22 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82467861","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pengaruh Duty Cycle Microwave pada Sifat Fotoluminesensi Material Carbon Nanodots","authors":"F. Nakul, Akfiny Aimon, D. Suhendra, B. Nuryadin, F. Iskandar","doi":"10.5614/jms.2019.24.2.3","DOIUrl":"https://doi.org/10.5614/jms.2019.24.2.3","url":null,"abstract":"Microwave banyak dimanfaatkan sebagai media pemanas termasuk di bidang sintesis material. Pemanasan melalui microwave memiliki keunggulan dibandingkan pemanas konvensional dikarenakan waktu pemanasan singkat dengan distribusi yang sera-gam. Untuk mempelajari mekanisme transfer energi dari sebuah microwave, diperlukan upaya pengendalian energi gelombang agar suplai energi panas yang diberikan dapat dikontrol dengan baik. Pada penelitian ini, pengontrolan suplai energi dilakukan dengan mengatur duty cycle microwave dengan level yang berbeda selama proses sintesis material carbon nanodots (CNDs). Selanjutnya, sifat fotoluminesensi dari material ini dikarakterisasi dengan spektrofotometer fluoresensi untuk menentukan tingkat intensitas pendaran yang dihasilkan.","PeriodicalId":31765,"journal":{"name":"Jurnal Pendidikan Matematika dan Sains","volume":"3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89250772","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 Effect of Leather Tanning Wastewater on Paddy Fields, a case study in Garut District, West Java","authors":"T. Taufikurahman, T. Wardini, Lida Amalia, Andira Rahmawati, Asih Suryati, I. Fadilla, R. R. D. A. Rizkiyani","doi":"10.5614/jms.2018.23.1.6","DOIUrl":"https://doi.org/10.5614/jms.2018.23.1.6","url":null,"abstract":"Leather tanning wastewater which contains chromium (Cr) pollutes river located close to the industrial area. In Garut district, leather tanning industry wastewater is being dumped into Cigulampeng river which water is being used to irrigate nearby paddy fields. The paddy fields affected by leather tanning wastewater are reaching an area of 37.1 ha in Kota Wetan village and 76 ha in Sukamantri village. This research is aimed to determine the effect of tanning wastewater on paddy fields in Sukamantri village, Garut district. A descriptive quantitative method using questionnaires and interviews to local farmers in polluted and unpolluted paddy fields was employed. In addition, an observation on environmental factors including chemical and physical conditions of river water and soil of paddy fields was also conducted. Polluted water is characterized by its frequently color-changing, unpleasant odor, and contain toxic substances which mainly is chromium. Paddy cultivars planted in the polluted area are Rojolele (65.71%), Sarinah (42.8%), Widas (37.715%), Ciherang (20%), and Mega (11.43%). These paddy cultivars were chosen by farmers mostly based on their ability to withstand pollution and pest (mainly rats). The polluted water significantly decreased rice production, however the local farmers have no other alternatives to irrigates their paddy fields. Beside reducing rice production, the use of chromium-polluted water for irrigation has caused the farmers some health problems commonly related to skin diseases.","PeriodicalId":31765,"journal":{"name":"Jurnal Pendidikan Matematika dan Sains","volume":"38 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85433240","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Pengaruh Temperatur Annealing Terhadap Sifat Film Tipis ZnO:Ga Dengan Metode DC Magnetron Sputtering","authors":"Farida Usriyah, S. Sulhadi, P. Marwoto, S. Sugianto","doi":"10.5614/jms.2019.24.2.5","DOIUrl":"https://doi.org/10.5614/jms.2019.24.2.5","url":null,"abstract":"Film tipis ZnO:Ga telah berhasil ditumbuhkan menggunakan metode DC Magnetron Sputtering (homemade) dengan treatment annealing pada temperatur 250 ⁰C dan 400 ⁰C. Karakterisasi optik film tipis menggunakan spektrometer Uv-Vis pada rentang panjang gelombang 400–800 nm untuk temperatur 250 ⁰C menghasilkan nilai transmitansi sebesar 84,019% dengan Eg 3,34 eV dan ketebalan film 454,26 nm, sedangkan film dengan temperatur 400 ⁰C didapatkan nilai transmitansi sebesar 83,878% dengan Eg 3,38 eV dan ketebalan film 755,6 nm. Citra SEM menunjukkan bahwa film yang diannealing pada temperatur 250 ⁰C mempunyai ukuran butir (grain size) yang lebih kecil dengan morfologi permukaan yang lebih rata dibandingkan film tipis yang diannealing pada temperatur 400 ⁰C.","PeriodicalId":31765,"journal":{"name":"Jurnal Pendidikan Matematika dan Sains","volume":"70 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86327376","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":"Proses Sintering Pada Kernel Uranium Dioksida (UO2) Dalam Rangka Mendukung Persiapan Bahan Bakar Reaktor HTR","authors":"Fitrotun Aliyah, Moch Setjadji, W. B. Sediawan, Hary Sylistyo","doi":"10.5614/jms.2019.24.1.3","DOIUrl":"https://doi.org/10.5614/jms.2019.24.1.3","url":null,"abstract":"Proses sintering kernel UO2 merupakan salah satu bagian dari persiapan elemen bahan bakar nuklir untuk reaktor HTR. Proses sintering adalah tahapan akhir dalam pembuatan kernel bahan bakar sebelum dilakukan proses coating atau pelapisan. Tahapan ini sangat penting dalam keseluruhan proses karena akan menentukan kelayakan kernel UO2 sesuai dengan spesifikasi bahan bakar reaktor HTR. Penelitian ini dilakukan dengan persiapan sampel bahan baku, kemudian pemanasan dengan suhu tinggi dalam atmosfer gas Argon, dan analisis kernel hasil sintering. Analisis diameter kernel dilakukan menggunakan Dinolite capture, analisis densitas dilakukan dengan piknometer, dan analisis luas muka spesifik dan volume pori total dilakukan dengan NOVA-1000. Pemodelan matematis yang digunakan yaitu Model I (Reaksi Searah), Model II (Reaksi Seri dengan ks dan kp mengikuti persamaan Arrhenius) dan Model III (Reaksi Seri dengan ks dan kp mengikuti persamaan modified Arrhenius). Tujuan dari penelitian ini adalah untuk mendapatkan kernel UO2 dengan densitas yang tinggi yaitu ≥ 95%TD, untuk memodelkan secara matematis proses sintering dan untuk memperoleh nilai parameter – parameter sintering yaitu As, Es, Ap, Ep, dan ρC. Dari hasil penelitian diperoleh bahwa densitas tertinggi mencapai 92,56%TD atau sekitar 10,1441 g/cm3 yaitu pada sintering suhu 1400°C dengan waktu sintering 2 jam. Diameter yang dihasilkan yaitu sekitar 919µm, luas muka spesifik 4,4213 m2/g, dan volume pori total 4,7515x10-3 cm3/g. Pemodelan matematis yang sesuai yaitu Model III (Reaksi Seri dengan ks dan kp mengikuti persamaan modified Arrhenius) dengan nilai ralat rerata 1,02%. Nilai parameter sintering yang dihasilkan dari optimasi program MATLAB dengan Model III yaitu energi aktivasi sintering (Es) sebesar 24 kJ/mol, energi aktivasi perusakan (Ep) 16 kJ/mol, dan densitas kernel C (ρc) 8,34 g/cm3. Sedangkan nilai frekuensi tumbukan sintering (As) dan frekuensi tumbukan terjadinya perusakan (Ap) bergantung pada suhu dengan persamaan: As = 1,8188x10-2 T dan Ap = 4,9753x106 T-2.","PeriodicalId":31765,"journal":{"name":"Jurnal Pendidikan Matematika dan Sains","volume":"93 4 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83338720","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":"Utilization of Microalgae (Nannochloropsis oculata) as Support Materi-al to Supply of Oxygen in Advanced Function of Respirator Mask in Preventing Society from URI Disease","authors":"Shochibul Ma’arif, M. Dioktyanto, Mimi Nur Indah Sari, M. Damayanti, W. Widyastuti","doi":"10.5614/jms.2019.24.1.5","DOIUrl":"https://doi.org/10.5614/jms.2019.24.1.5","url":null,"abstract":"Indonesia is the most country who has a lot of volcanic mounts of Ring of Fire can erupt everytime it can be. When volcanoes eruptions, some of material be exploded such as bomb, lapilli, pyroclastic ash etc. Piroclastic ash can influence respiration disease and it call ISPA (Infeksi Saluran Pernapasan Atas). ISPA is kind of disease which attacks lung by damaging alveolar under process of loading pyroclastic ash movement. The government gives supporting non standard mask 3 ply be used to protect people from pyroclastic ash. However, this mask can’t filter pyroclastic ash properly. So that, it makes society get suffer ISPA’s disease after have inhaled pyroclastic ash. Current research about support material for respirator mask is less than other country. In addition, the utilization of the supporting material for the mask, not many do. This research will find out solution to integrate support material e.g. microalgae (Nannochloropsis oculata) as a supplier of oxygen to enhance the advanced functionality of the mask in preventing the proliferation of ISPA’s disease.","PeriodicalId":31765,"journal":{"name":"Jurnal Pendidikan Matematika dan Sains","volume":"109 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81022347","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":"Numerical Model Development on Ultrasound-Assisted Extraction Process for Production of Nutmeg (Myristica fragrans Houtt) Oleoresin","authors":"Maryam. Al Lubbu, I. Budiastra, Y. Purwanto, S. Sutrisno","doi":"10.5614/jms.2018.23.1.4","DOIUrl":"https://doi.org/10.5614/jms.2018.23.1.4","url":null,"abstract":"Oleoresin is one of nutmeg processed product that has many advantages for use in industries and it produced using extraction methods. Ultrasound-Assisted Extraction (UAE) is a non-conventional extraction method to produce oleoresin from nutmeg (Myristica fragrans Houtt) seeds. The effects of ultrasound amplitude (45, 60, 75, 90% amplitude) and extraction time (30, 45, 60, 75 min) to oleoresin concentration were investigated. A model was built to describe the extraction process based on the second order model and oleoresin extraction mechanism. The regression method for each parameter has been used to solve the formula and the calculated values were in good agreement with the experimental data. The model was agreed with experimental data with the error between 0.023% to 3.2% and has coefficient correlation 0,983. The result showed that the model could be used to predict the concentration of nutmeg oleoresin using Ultrasound-Assisted Extraction method with extraction time of 30-75 minutes and ultrasound amplitude of 45-90% as the boundary condition.","PeriodicalId":31765,"journal":{"name":"Jurnal Pendidikan Matematika dan Sains","volume":"24 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86566872","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 Challenge of Protein Domain Annotation with Supervised Learn-ing Approach: A Systematic Review","authors":"A. A. Parikesit, Rizky Nurdiansyah","doi":"10.5614/jms.2019.24.1.1","DOIUrl":"https://doi.org/10.5614/jms.2019.24.1.1","url":null,"abstract":"The protein domain is still considered one of the most critical evolutionary unit in the cellular, molecular mechanism. Hence, providing the quantitative measurements of the domain contents of proteins would be essential to give insights on the dynamics of the cell’s biochemical machinery. Bioinformatics, as a quantitative science, has successfully provided several approaches to comprehend the domain contents and their dynamics. It was done mainly with supervised learning approach. In eukaryote domain, there is the tendency of transcription factor domain avoidance in the higher organism, and co-occurrence in a single cell has shed light on the complexity of domain functionality. It is widely assumed that protein domain tends to avoid each other as the organism gained more sophisticated molecular features. However, more sample organisms should be provided to obtain better insight on the domain co-occurrence in the cells. This systematic review was conducted by searching literature in Google Scholars and PubMed. To this end, automatic pipelines should be provided by software packages such as DOMOSAIC with the help of the R-based scripting to uphold the statistical significance. The latest updates on this topic are covering annotation on the orphan domain in Drosophila, and architecture plasticity in the eukaryote.","PeriodicalId":31765,"journal":{"name":"Jurnal Pendidikan Matematika dan Sains","volume":"87 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78276361","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}