Pengaruh Karet Alam Siklik (Cyclic Natural Rubber) Terhadap Rongga Aspal Modifikasi

Penelitian ini bertujuan untuk mengetahui pengaruh karet alam siklik terhadap rongga aspal modifikasi. Tahapan peneltian meliputi pembuatan aspal modifikasi dengan menyampur aspal murni dengan karet alam siklik, pengujian persyaratan fisik aspal, pembuatan benda uji dan pengujian marshall. Berdasarkan pengujian sifat fisik aspal diperoleh data bahwa keseluruhan aspal modifikasi memenuhi persyaratan fisik aspal. Setelah pembuatan benda uji, dilakukan pengujian marshall untuk memperoleh rongga aspal meliputi VIM, VMA dan VFA. Nilai VIM pada penambahan 0 phr, 1 phr, 2 phr, 3 phr, dan 4 phr adalah 3,65%, 5,41%, 4,27%, 3,84%, dan 2,88%. Nilai VMA sebesar 15,52%, 17,26%, 16,07%, 15,80%, dan 15,17%. Nilai VFA sebesar 76,48%, 68,72%, 73,54%, 75,76%, dan 81,34%. Diperoleh kesimpulan bahwa karet alam siklik bisa dijadikan sebagai bahan memodifikasi aspal dan berpengaruh terhadap rongga aspal.This research aimed to determine the effect of cyclic natural rubber (CNR) to cavity of modified bitumen. The steps of the research were mixing the pure bitumen with CNR, testing bitumen physical requirement, making the specimen, and testing the cavity of modified bitumen with marshall method. Testing showed that all the modified bitumen met the physical requirement. After making specimen, marshall method was used to determine the cavity of bitumen, including VIM, VMA, and VFA. VIM in addition of 0 phr, 1 phr, 2 phr, 3 phr, and 4 phr was 3,65%, 5,41%, 4,27%, 3,84%, and 2,88%. The value of VMA was 15.52%, 17.26%, 16.07%, 15.80% and 15.17%. The value of VFA was 76.48%, 68.72%, 73.54%, 75.76% and 81.34%. The conclusion of this study was CNR could be used as material for bitumen modified and had the effect on bitumen cavity

Karakteristik dan Penanganan Limbah Padat Serta Keluhan Iritasi Kulit pada Petugas Kebersihan di Pasar Tradisionaldan Pasar Modern Kota Medan Tahun 2013

Market is area where the buying and selling of goods with the seller more than onegood something called the shopping centre traditional market, supermarket, shops, mall,plaza, central trade and others.Research is to give in idea of the characteristics and solid waste management marketand complaint skin irritation on janitor in the traditional market and modern market inMedan city 2013.This research is descriptive with sample janitor which totaled 40 people.The characteristic of respondents in the traditional market Penampungan PusatPasar the most common being a janitor ≥ 26 years: 10 people (45,5%), gender is a man: 13people (59,1%), last high school education: 13 people (59,1%), long work ≥ 1 years: 15people (68,2%), working hour ≥ 5 hours: 22 people (100%), ever had complaints of skinirritation: 8 people (36,4%). The characteristic of respondents in the modern marketBerastagi Supermarket, a janitor at most 15-20 years old: 10 people (55,6%), gender is aman: 13 people (55,6%), last high school education: 18 people (100%), long work ≤ 1years: 17 people (94,4%), working hour ≥ 5 hours: 18 people (100%), never hadcomplaints of skin irritation: 18 people (100%). The market Penampungan Central Marketusing traditional Markets do not waste separation while in the modern market madeBerastagi Supermarket waste separation, between the organic and inorganic waste.Advices to departement of market and department of cleansing to providecounseling and socialization regarding waste management which is right and theimportance of the use of a protective self (APD) while working to janitor both in traditionalmarket Penampungan Central Market and modern market Berastagi Supermarket

Pertanggungjawaban Pidana Terhadap Orangtua Yang Tidak Melaporkan Anaknya Sebagai Pecandu Narkotika Berdasarkan Undang-undang Nomor 35 Tahun 2009 Tentang Narkotika

The number of children who become victims of narcotics higher each year, required an effective way in order to reduce the number of children who become drug addicts getting down. To the authors need to raise the issue of children who become addicted to narcotics, to be a deterrent effect for the cause of children becoming drug addicts, and to be also held prtanggungjawabannya. The purpose of this thesis, namely: First, the need for criminal responsibility by parents to their children who become addicted to narcotics, second, the need to excuse criminal eraser against liability legislation of conflicting namely Law On Narcotics with the Child Protection Act. This type of research can be classified into types of normative legal research that discusses the general principles of law, systematic law and comparative law. From the research there are problems, there are two main things that Dapa concluded. First, So if I researched, the person most responsible for actually increasing the number of children who became a drug addict is a parent. In accordance with Act No. 35 of 2014, the parent is obliged to protect the mental and physical development of the child. And if the author raised through the theory of criminal liability, the parent is the person most responsible. Thus, according to the author of the number of children who become drug addicts rehabilitated and imprisoned should be accompanied by parents who participate become criminal offenders because they have neglected to keep her child. In accordance with Article 55 Paragraph (1) of Law No. 35 of 2009, parents have been deemed to know even though he did not know if his son became a drug addict, and if it does not do notifiable be subject to criminal sanctions in accordance with Article 128 of Law No. 35 of 2009. Second, the author also analyzes the juridical what if the parents have their own initiative to undertake rehabilitation treatment in private by not required to report to the authorities in accordance with Law No. 35 of 2009. On one side of the parents run the obligation to carry out rehabilitation treatment to children with do not notifiable due to negative stigma society and can be a delay in the child's education according to the Law on the Protection of Children

Kajian Mutu Air Pada Proyeksi Debit Terendah Dengan Metodenational Sanitation Foundation's Water Quality Index(nsf-wqi) Di Sungai Pelus

Pelus river is one of the macro drainage system with a total length of ± 19.809 km. Determination of the status of water quality in the river Pelus necessary to know how big the blackened conditions experienced by Pelus river. This study aimed to analyze the factors that cause changes in the concentration of turbidity, DO, pH, Feral Coliform, TDS, BOD, nitrate, total phosphate, and the temperature in pollution control efforts in the future. Status of water quality in Pelus river used projections discharge as tools in the determination of status of water quality. This happens because the study occurred during the rainy season, where the concentration does not show the actual values. Pelus river water quality assessment carried out by using NSF-IKA, the results indicate sampling points 1 and 2 gain medium polluted category. Settlement activity to provide input to the highest organic pollution Pelus river

Aksi Gen Epistasis Duplikat pada Karakter Terkait Toleransi Naungan di Tanaman Tomat

Informasi tentang karakter seleksi dan pewarisan sifatnya sangat penting bagi program pemuliaan tanaman. Penelitian ini bertujuan untuk memperoleh karakter seleksi dan informasi pewarisan sifatnya terhadap cekaman naungan pada tanaman tomat. Populasi persilangan Biparental SSH3 x 4979 (tetua, F1, backcross dan F2) ditanam pada kondisi tanpa naungan (N0) dan kondisi cekaman naungan paranet 50% (N50) di Kebun Percobaan Pusat Kajian Hortikultura Tropika – Institut Pertanian Bogor, Pasir Kuda, Bogor, Jawa Barat, Indonesia. Hasil penelitian memperlihatkan bahwa karakter kehijauan daun, fruit set, jumlah buah dan bobot buah per tanaman merupakan karakter seleksi toleran naungan pada tanaman tomat. Terdapat aksi gen dominan dan epistasis duplikat pada karakter-karakter tersebut baik pada kondisi normal maupun kondisi cekaman naungan kecuali karakter fruit set pada kondisi tanpa naungan. Dominansi pada karakter-karakter tersebut bersifat over dominan pada kondisi tanpa naungan, namun dominan parsial pada kondisi cekaman naungan. Ragam aditif lebih berperan dibandingkan ragam non aditif pada karakter kehijauan daun, fruit set, jumlah dan bobot buah per tanaman pada kondisi normal namun sebaliknya dimana ragam non aditif lebih berperan dibandingkan ragam aditif pada karakter-karakter tersebut saat kondisi cekaman naungan. Seleksi pada generasi awal seperti generasi F2 dapat efektif dilakukan pada karakter-karakter tersebut pada kondisi tanpa naungan, namun seleksi pada kondisi cekaman naungan terhadap karakter-karakter tersebut lebih baik dilakukan pada generasi lanjut. Kata kunci: agroforestri, berkelanjutan, tumpang sari, varietas unggu

Temporal Trends and Spatial Relationships of Radioactive Isotopes (I-131, Cs-134, and Cs-137) in Response to Nuclear Events: A Comprehensive Analysis Using Time Series Graphs, Regression, and Multivariate Techniques

This research aims to comprehend the evolution of radioactive isotopes      Iodine-131 (I-131), Cesium-134 (Cs-134), and Cesium-137 (Cs-137) over time in diverse locations and analyze their relationships with the independent variables Longitude and Latitude using Linear Regression, Principal Component Analysis (PCA), and Canonical Correlation Analysis (CCA). The data used in this study were processed from the "DE.xlsx" file, including the imputation of missing values with 0 and column transformation into factors. The results of the Linear Regression analysis indicate a significant association between these isotopes and Longitude and Latitude. Additionally, PCA and CCA analyses reveal complex relationships between the isotopes and independent variables. This research provides valuable insights into the historical trends of radioactive isotopes Iodine-131 (I-131), Cesium-134 (Cs-134), and Cesium-137 (Cs-137) in various locations. The novel aspect and uniqueness of this study lie in the utilization of a comprehensive analytical approach, combining Linear Regression, PCA, and CCA to comprehend the relationships between isotopes and specific environmental factors. Moreover, this study significantly contributes to understanding the phenomena of radioactive isotopes and can serve as a foundation for further research in this field. The findings of this research are expected to support efforts in preventing and managing potential environmental and human health impacts of radioactive isotopes in the future

Pengembangan Bahan Ajar Komik Muatan Matematika Materi Satuan Berat di Sekolah Dasar

Penelitian pengembangan ini dilakukan untuk menghasilkan produk bahan ajar komik matematika materi satuan berat yang bertujuan untuk memecahkan permasalahan pendidikan. Pengembangan bahan ajar komik matematika materi satuan berat ini dikembangkan sesuai dengan karakteristik dan kebutuhan siswa kelas II Sekolah Dasar. Penelitian ini peneliti menggunakan metode RnD model pengembangan Borg and Gall dalam (Sugiyono, 2012) yang dilakukan dengan 9 tahap, yaitu: (1) potensi dan masalah, (2) pengumpulan data, (3) desain produk, (4) validasi produk, (5) revisi produk, (6) uji coba produk, (7) revisi produk, (8) uji pemakaian produk, (9) revisi produk. Subjek pada penelitian ini ialah siswa kelas II SDN Pejaten Timur 18 Pagi Jakarta Selatan yang berjumlah 29 siswa. Data kuantitatif pada penelitian ini didapatkan dari hasil wawancara dan observasi. Data kuantitatif pada penelitian ini didapatkan dari hasil validasi serta kuesioner. Validasi bahan ajar mendapatkan nilai 86.83% dengan kategori sangat layak. Hasil nilai uji coba produk skala kecil yaitu 9 siswa mendapatkan nilai 92.89% dengan kategori sangat layak. Sedangkan hasil uji coba pemakaian produk skala besar yaitu 29 siswa mendapatkan nilai 89.72% dengan kategori sangat layak. Pengembangan produk berupa bahan ajar komik matematika materi satuan berat ini dinilai sangat layak dan efektif digunakan saat kegiatan pembelajaran. Penelitian selanjutnya diharapkan bisa mengembangkan bahan ajar komik matematika dengan berbagai materi agar lebih bervariatif

Pengembangan Lembar Kerja Siswa Matematika Berbasis Model Discovery Learning terhadap Kemampuan Pemahaman Konsep Matematis Siswa Kelas XI di SMA Negeri 1 Rantau Selatan

Pengembangan produk berupa Lembar Kerja Siswa matematika berbasis modeldiscovery learningterhadapkemampuan pemahaman konsep matematis siswa kelas XI di SMAN 1 Rantau Selatan merupakan tujuan utama yang digunakan dalam penelitian ini.Penelitian pengembangan (R&D) dipilih sebagai jenis penelitian yang digunakan. Sedangkan desain penelitian yang digunakan adalah model 4-D yang terdiri dari define, design, develop, dan disseminate.Produk ini divalidasi oleh validator ahliyang berkompeten dibidangnya.Produk diuji cobakan kepada siswa/i kelas XI Mia 1 di SMAN 1 Rantau Selatan.Langkah berikutnya ditinjau dari keefektifan dan peningkatan kemampuan pemahaman konsep matematis siswa dari pengembangan LKS tersebut.Instrumen yang dipakaiyaitulembar validasi, wawancara tidak terstruktur, angket respon siswa dan tes kemampuan pemahaman konsep matematis.Sedangkan teknik analisis data yaitu analisis kevalidan, analisis keefektifan dan analisis data tes kemampuan pemahaman konsep matematis.Berdasarkan uji cobaoleh peneliti maka didapatkan hasil keefektifan pengembangan produk yaitu sebesar 3.45 yang artinya sudah efektif jika digunakan dalam proses belajar mengajar, sedangkan nilai angket respon siswa sebesar 3.45 dari skala tertinggi adalah 4. Dan peningkatan pemahaman konsep matematis berada pada kriteria sedang yaitu 0,63. Berdasarkan data tersebut, produk yang dikembangkan sudah efektif dan meningkat. Kata