bluuebunny/crossref_metadata_2025_split huggingface dataset:
PEMBUATAN ALAT BANTU PELEPAS PIN SWING LINK PADA BOLSTER BOGIE KERETA API
Authors: Pratama Adhitya Bagas , Rozaq Fadli , . Surjanto 
Published: February 2020

Abstract Train bogie is one of the main components related to passenger safety and comfort that require maintenance. One component of bogie that must be treated is a bolster. In this bolster, there is an important component called the swing link pin that must be removed when starting disassembly. The purpose of this study is to build a swing link pin release tool more effective and more efficient compared to existing tools. The design process of this tool uses the Solidworks 2017 software. The test results show that the pin release tool produced from this study can release the pin faster than the existing tools. Keywords: bogie, train, bolster, swing link, pin release tool Abstrak Bogie kereta api merupakan salah satu komponen utama yang terkait keselamatan dan kenyamanan penumpang sehingga membutuhkan perawatan. Salah satu komponen bogie yang harus dirawat adalah bolster. Pada bolster ini terdapat komponen penting bernama pin swing link yang harus dilepas pada saat memulai pembongkaran. Tujuan penelitian ini adalah untuk membuat alat bantu pelepas pin swing link yang lebih efektif dan lebih efisien dibandingkan dengan alat yang sudah ada. Proses desain alat bantu ini menggunakan aplikasi Solidworks 2017. Hasil pengujian menunjukkan bahwa alat bantu pelepas pin yang dihasilkan dari studi ini dapat melepas pin lebih cepat dibandingkan dengan alat yang sudah ada. Kata-kata kunci: bogie, kereta api, bolster, swing link, alat bantu pelepas pin
KAJIAN PERUBAHAN STATUS JALAN JALAN LINGKAR LUAR GORONTALO
Authors: Wasanta Tilaka , Sowolino Bertho Orbain , Mujahid Zakaria , Santosa Wimpy 
Published: February 2020

Abstract A road, as the most important infrastructure on land transportation, plays a huge role on the movement of passengers and freight. According to its status, road is classified into national road, province road, city road, district road, and village road. The status of a road significantly affects the process of financing, planning, construction, and maintenance of that road. Therefore, a comprehensive study is needed before the status of a road is determined or changed. This paper discusses several aspects that are needed to be considered before the status of a road is determined or changed, with a case study of Gorontalo Outer Ring Road. These aspects are centre-of-activity hierarchy, road geometry, and the traffic volume. After all those aspects were discussed, the recommended status of Gorontalo Outer Ring Road is concluded. Keywords: rroad, land transportation, road status, centre-of-activity Abstrak Jalan sebagai prasarana utama transportasi darat memegang peranan penting terhadap pergerakan barang maupun pergerakan orang. Menurut statusnya, jalan dikelompokkan menjadi jalan nasional, jalan provinsi, jalan kota, jalan kabupaten, dan jalan desa. Penetapan status suatu jalan berdampak besar pada kegiatan pembiayaan, perencanaan, pembangunan, dan pemeliharaan jalan tersebut. Oleh karena itu, diperlukan kajian yang mendalam sebelum suatu jalan ditetapkan atau diubah statusnya. Pada studi ini dikaji aspek-aspek yang perlu diperhatikan ketika suatu ruas jalan akan ditetapkan atau diubah statusnya, dengan studi kasus Jalan Lingkar Luar Gorontalo. Aspek-aspek yang dibahas pada penelitian ini adalah aspek hierarki pusat kegiatan, aspek geometri jalan, dan aspek lalu lintas. Setelah semua aspek tersebut dibahas, dapat disimpulkan status jalan yang sesuai untuk Jalan Lingkar Luar Gorontalo. Kata-kata kunci: jalan, transportasi darat, status jalan, pusat kegiatan
Pengembangan Eksperimen Interaksi Cahaya terhadap Medium tentang Penentuan Kadar Besi (Fe) dalam Air Minum Isi Ulang
Authors: Sumarni Ria Asep 
Published: February 2020

Pengembangan eksperimen penentuan kadar besi (Fe) dalam air minum isi ulang berbasis spektroskopi: tentang interaksi cahaya terhadap medium cair. Eksperimen dilakukan dengan cara menghitung nilai absorbsi dari larutan standar besi (Fe). Fotodioda terhubung pada interface LoggerPro dan akan terbaca pada laptop yang sudah terinstal software LoggerPro. Nilai yang terbaca pada LoggerPro berupa tegangan (voltase). Sampel yang diuji kadar besi (Fe) adalah air minum isi ulang dari empat depot di sekitar kampus UAD Yogyakarta. Pengambilan data diawali dengan menentukan panjang gelombang maksimum terhadap absorbsi larutan besi (Fe) menggunakan fiber optik dan software LoggerPro. Panjang gelombang yang diperoleh adalah 447,8 nm warna biru. Nilai kadar besi (Fe) dalam air minum isi ulang dihitung dari gradien garis hasil regresi linier konsentrasi larutan standar besi (Fe )terhadap absorbsi. Nilai kadar besi menggunakan fotodioda mendekati nilai kadar besi (Fe) dalam air minum isi ulang menggunakan spektroskopi. Hasil yang diperoleh dengan kedua metode bahwa nilai kadar besi (Fe) dalam air minum isi ulang dari berbagai depot masih di bawah batas standar PERMENKES 2010. Pada penelitian ini dilakukan pengujian produk, baik kelayakan dan keefektifan produk penentuan kadar besi (Fe). Angket sebagai alat uji dan respon pengguna diberikan kepada ahli pembuat alat, dosen dan mahasiswa.
Keselarasan Penggunaan Lahan dengan Pola Ruang dan Arahan Pengembangan Ruang Terbuka Hijau di Kabupaten Bengkulu Selatan
Authors: Sitorus Santun R.P. , Mustamei Engge , Mulya Setyardi Pratika 
Published: February 2020

Kabupaten Bengkulu Selatan merupakan wilayah yang terus berkembang, terbukti dengan sedang dilakukannya pengajuan Manna sebagai ibukota Kabupaten menjadi sebuah kota. Tahun 2016, Pendapatan Asli Daerah (PAD) meningkat sebesar 23.61% dibandingkan tahun 2015, dan pada tahun 2015 meningkat 19.76% dibandingkan tahun 2014. Hal ini merangsang pertumbuhan penduduk dan pusat-pusat pertumbuhan baru dengan cepat, sehingga mendorong terjadinya perubahan penggunaan dan kepemilikan lahan, serta munculnya usaha-usaha baru dibidang perekonomian. Kegiatan pemanfaatan lahan harus selalu dievaluasi dengan berpedoman pada rencana tata ruang wilayah (RTRW). Pengembangan wilayah Kabupaten Bengkulu Selatan dengan Manna sebagai Ibukota harus berwawasan lingkungan (green city) sesuai dengan UU Penataan Ruang No 26 Tahun 2007, yaitu memenuhi kebutuhan minimal ruang terbuka hijau (RTH) (30%) yang terdiri dari RTH publik (20%) dan RTH privat (10%). Penelitian ini bertujuan mengidentifikasi penggunaan lahan eksisting Kabupaten Bengkulu Selatan tahun 2018, mengevaluasi keselarasan penggunaan lahan dengan rencana pola ruang RTRW, mengetahui jenis dan luas penyebaran RTH di Kota Manna tahun 2018, dan menyusun arahan rencana pengembangan RTH. Hasil penelitian menunjukkan ada 8 jenis penggunaan lahan eksisting Kabupaten Bengkulu Selatan yang terdiri atas hutan seluas 55,861.0 ha (47.91%), industri seluas 56.2 ha (0.05%), permukiman seluas 2,617.4 ha (2.24%), perkebunan seluas 43,186.7 ha (37.04), sawah seluas 7,257.8 ha (6.23%), lahan terbuka/semak belukar seluas 548.5 ha (0.47 %), tegalan seluas 4,669.3 ha (4.01%), dan tubuh air seluas 2,389.8 ha (2.05%). Luas penggunaan lahan yang selaras dengan pola ruang RTRW adalah sebesar 84,823.7 ha (73%), penggunaan lahan yang transisi sebesar 27,115.0 ha (23%), dan penggunaan lahan yang tidak selaras sebesar 4.648.0 ha (4%). Penggunaan lahan yang selaras disarankan untuk dilanjutkan. Penggunaan lahan yang tidak selaras disarankan pengembangan lebih lanjut untuk dihentikan. Penggunaan lahan yang bersifat transisi disarankan untuk digunakan sesuai dengan pola ruang RTRW. Luas RTH publik eksisting Kota Manna masih kurang (-23.2 ha) berdasarkan luas wilayah, tetapi sudah melebihi kebutuhan berdasarkan jumlah penduduk (2,515.3 ha). Pengembangan RTH publik dilakukan pada lahan prioritas 1 dengan luas 38.6 ha karena sudah mencukupi kebutuhan RTH publik berdasarkan luas wilayah.
Kata kunci: Keselarasan, Penggunaan lahan, RTH Privat, RTH Publik, RTRW
Serbuk Gergaji Kayu Jati Teraktivasi EDTA Sebagai Penjerap Ion Tembaga (II) dan Krom (III)
Authors: Irdhawati Irdhawati , Triyunita Sinthadevi Ni Nyoman , Sahara Emmy 
Published: February 2020

Teak sawdust is a waste of the furniture industry. The main compound content is cellulose, which contains hydroxyl groups so that can be used as adsorbent. This work aims to determine adsorption capacity and isotherm adsorption pattern of teak sawdust activated by EDTA for copper (II) dan chromium (III) ions. Some parameters were optimized including the ratio of adsorbent and EDTA, and contact time. The results showed the optimum ratio of teak sawdust and EDTA was 2:3, and the optimum contact time was 105 minutes. Both of isoterm adsorption patterns of teak sawdust to Cu (II) and Cr (III) ions follow the Freundlich equation, with determination coefficient close to one. Optimum adsorption capacity was obtained 46.5 and 39.7 mg/g for Cu (II) and Cr (III), respectively.
Вплив орієнтаційного витягування на властивості сумішей поліефірів ПЕТg/ПЕТ
Authors: Іскандаров Р. Ш. , Сова Н. В. , Пушкарьов Д. В. , Дебелий Б. С. , Савченко Б. М. 
Published: February 2020

Rational conditions for orientational drawing of PETg/PET polyester blend during processing into tape products are established. Tensile strength and elongation at break for all test specimens were determined according to ISO 527-2: 2012. Tensile modulus - ISO 527-1: 2019, specimen density - PN-EN ISO 1183-1, change of linear dimensions of specimens - ISO 16012: 2015. It was found that the introduction of PET into PETg leads to an increase in tensile strength of the blend, which is probably due to the process of orientational crystallization of PET. When the orientations are higher than 5.5 times in the PETg /PET mixtures, cavitation foaming occurs, which leads to a decrease in the blend density, its turbidity and a decrease in tensile strength. Blends with a high content of PETg have a significant thermal shrinkage, which should be taken into account when processing and applying these polymers. Physical and mechanical properties of PETg/PET polyesters blend with different ratio in the process of orientational stretching are established. The tensile strength increases with the increase drawing ratio for blends with high PET content due to its orientation crystallization. The phenomenon of cavitation foaming in polyester blend with draw ratio more than 5.5 times is found, which is accompanied by a decrease in the density of the samples and their tensile strength. Presence of PETg in PET matrix decrease tensile strength and elongation and significantly increase thermal shrinkage. Low elongation at break found for PETg/PET blend specimen without orientation which increases dramatically with low draw ratios and then decrease with higher drawing ratio. The technological modes of realization of cavitation foaming for the PETg/PET mixture at orientation drawing ratio above 5.5 due to the different phase structure of the components of the mixtures have been established. The introduction of PETg into PET leads to a significant increase in thermal shrinkage and reduces the physical and mechanical performance of oriented products.
Термомеханічний аналіз електропровідних композитних матеріалів на основі полівінілбутиралю
Authors: Бутенко О. О. , Місюра А. І. , Мамуня Є. П. , Барсуков В. З. , Хоменко В. Г. 
Published: February 2020

The purpose of this work was to investigate the thermomechanical properties of electrically conductive polymer composites based on polyvinylbutyral, which can be used as shielding coatings for electronic equipment. The structure of electrically conductive polymer composites was studied using a desktop scanning electron microscope (Phenom Pro ). Investigations of the temperature dependence of the deformation of composite materials were obtained using the thermomechanical analyzer Q400 EM from TA Instruments, the USA in the temperature range from 20 to 180 ° C with a heating rate of 5 ° C/min. Indentor final zone diameter was 0.85 mm, applied force was 0.28 N, which corresponds to effort of 0,5 МPа. Composites based on polymer matrix and electrically conductive carbonaceous materials with the addition of magnetite have been developed. The thermomechanical analysis of composites was shown the structural transitions of the composite over a wide temperature range. Dependences for deformation derivate vs temperature have been analized. It was established that the introduction of carbonaceous materials as filler allows increasing the value of the equilibrium modulus of composite materials in the range of plastic deformation because the fillers limit the fluidity of the composite and as result their deformation. Thermomechanical analysis of composite materials for electromagnetic shielding was performed for the first time. The influence of the deformation resistance of the material was determinate taking in the account of nature and the amount of carbonaceous materials filler in the composite. Electroconductive composite materials with high thermomechanical stability was proposed for electromagnetic shielding protection in electronic devices.
Дослідження хемосорбційних властивостей волокнистих сорбентів для очищення стічних вод від іонів Fe3+
Authors: Тарасенко Н. В. , Плаван В. П. , Будаш Ю. О. , Коляда М. К. , Рачинська О. В. 
Published: February 2020

Create new eco-friendly composite fibrous materials with sorption properties in relation to heavy metal ions in wastewater of industrial enterprises. To study the sorption capacity of synthetic fibers with respect to iron compounds. By the analytical methods determined the content of Fe3+ in model solutions of ferric ammonium alum before and after treatment, calculated the degree of exhaustion solution, %; by means of IR-spectroscopy, synthetic fibers were investigated before and after treatment with vegetable polyphenols of Tara, Quebracho and Fe3+ compounds to determine the mechanism of interaction. The proposed method of modification of fibrous materials have based on the treatment of material with tannins solutions with different nature vegetable polyphenols. It was determined that the sorption capacity of the fiber sorbent in relation to Fe3+ after treatment with of Tara tannins at a temperature of 40oC is higher than after treatment with Quebracho tannins under similar conditions. Processing during the first four hours is most effective. In this case, the degree of exhaustion solution of ferric ammonium alum reaches 90 %. The obtained sorbent has such advantages as high sorption activity and the ability to further modify, the methods of production are quite simple and cheap, and the possibility of producing sorbent from secondary raw materials allows to solve the problem of waste disposal.
ОСОБЛИВОСТІ ЗАСТОСУВАННЯ СУЧАСНИХ ПРОГРАМ У ДИЗАЙН-ПРОЕКТУВАННІ ЮВЕЛІРНИХ ВИРОБІВ
Authors: Рубанка М. М. , Остапенко Н. В. , Рубанка А. І. 
Published: February 2020

The purpose of the article is to analyze the applicability of modern software for design-projecting of models of jewelry on the example of creation of a 3D model of a flat medallion; such process of creation includes the following steps: development of an algorithm; check for the errors; determination of the main characteristics. When conducting the researches, a set of general scientific approaches has been used, in particular: visual-analytical and system-informational approaches, modern methods of analysis of mechanical systems, as well as the method of classifications. The programs for three-dimensional modeling are listed; the peculiarities of their use and their functional possibilities are revealed. Based on the analysis of peculiarities of design-projecting of jewelry, the applicability of modern software is identified, in particular, the applicability of Rhinoceros 3D commercial software for three-dimensional NURBS-modeling. The development of engineering methods of designing of jewelry. The comparative analysis of programs for design-projecting of jewelry is performed. The proposed algorithm for creation of 3D model of a flat medallion using the Rhinoceros 3D software for three-dimensional NURBS-modeling is described. A standard algorithm for the creation of a 3D model of a flat medallion is developed. The recommendations regarding the use of Rhinoceros 3D software for three-dimensional NURBS-modeling in jewelry are made.
ХУДОЖНЬО-КОМПОЗИЦІЙНІ ЕЛЕМЕНТИ КОСТЮМА НАРОДІВ ПІВНІЧНОЇ АМЕРИКИ ЯК ТВОРЧЕ ДЖЕРЕЛО ДЛЯ РОЗРОБКИ КОЛЕКЦІЇ ОДЯГУ
Authors: Приходько-Кононенко І. О. , Винничук М. С. , Васильєва О. С. , Пристав Т. В. , Маслікова М. І. 
Published: February 2020

To determine the artistic and compositional features of ethnic costume of the peoples of North America for design-projection of the modern collections of women`s clothes. The visual-analytical and the literary-analytical methods, as well as the method of synectics, etc. are used. Based on the analysis of artistic and compositional solutions for ethnic costumes of the peoples of North America, in particular, Crow, Creek, Navaho, Pancho and Pueblo, their inherent elements and decorations are identified, and the possibility of their use as a creative source for the designing of modern collections of clothes in ethnic style, using the latest fashion trends and the draping method, is presented. Compositional and constructive, and decorative solutions for the models of women`s clothes are systematized in accordance with the fashion trends of the SS 19/20 season; specific artistic and compositional elements of the ethnic costume of the Indians of North America are distinguished; possible types of finishing are described, and their application in design-projecting of the collections of clothes are presented. Artistic-design and constructive-technological solutions for the models of women`s clothes using the artistic and compositional elements of the national costume of the Indians of North America are developed.
PENGGUNAAN WEBQUAL UNTUK PENENTUAN TINGKAT KEBERGUNAAN PADA WEBSITE (STUDI KASUS PADA TEKNIK SIPIL UNTAG SURABAYA)
Authors: Supangat Supangat 
Published: February 2020

Ide usability berpusat pada konsep membuat antarmuka website lebih
ramah pengguna tanpa melihat kompetensi dari pengguna tersebut. Berkaitan dengan hal tersebut, maka berdasarkan pernyataan tersebut untuk dalam penelitian ini akan dilakukan evaluasi website program studi Teknik Sipil Universitas 17 Agustus 1945 Surabaya, dikarenakan telah mempunyai website yang dapat diakses
oleh publik dan telah melakukan perubahan beberapa kali berdasarkan sudut pandang internalnya, tetapi belum pernah melakukan evaluasi kebergunaan untuk mengetahui tingkat kepuasan dari penggunanya. Mengingat dengan semakin berkembangnya jumlah pengguna yang pesat dari web site pada saat ini, prodi teknik sipil tersebut ingin mengetahui tingkat kebergunaan website yang dimilikinya berdasarkan persepsi pengguna atau pengunjung, sebagai bagian dari rencana pengembangan website sesuai dengan aspek user experience yang semakin penting untuk era ini. Pada penelitian ini dilakukan survei dengan bantuan kuesioner dan dibagikan ke 200 responden. Metode pengukuran menggunakan WebQual versi 4.0 dengan menyertakan tiga dimensi kebergunaan. Hasil
penelitian, hampir sebagian besar pengguna menyatakan kepuasan terhadap website prodi teknik sipil, dengan hasil 57.70% responden menyatakan memuaskan pada aspek usabilitas, 52.27% responden menyatakan memuaskan pada aspek kualitas informasi, dan 54.86% responden menyatakan memuaskan pada aspek kualitas informasi.
Metallurgical Evaluation and Failure Analysis of Cracking in Wheel Rim SPFH590 Steel
Authors: Janarthanan Vajiravelu , Selvakumar Gurusamy , Vijayan Sundaravel , Sumathi Muniasamy 
Published: February 2020

Abstract
Manufacturing wheel rims in the automobile industry demands high quality, high production, cost-effective and flawless wheels. At present, JIS G3138 SPFH 590 steel is widely used for manufacturing wheel rims for light and medium commercial vehicles. For high productivity, Flash butt welding is used for joining the edges of hot rolled strips. Cracking in wheel rims is a significant problem encountered in the production sectors. The present study is aimed at evaluating failure types in wheel rims by factors governing flash butt weld and subsequent cold forming processes. The microstructure of fractured specimens was examined by field emission scanning electron microscopy (FESEM) and an optical microscope. The mechanical characterization was analysed by tensile tests and crack tip opening displaced testing. The outcome of the results obtained was correlated with metallurgical concepts in order to find the cause of cracking failure.
Microstructure and properties of fiber laser welded high strength steel butt joints
Authors: Xuewen Zong , Kaiming Wang , Hanguang Fu 
Published: February 2020

AbstractA YLS-6000 fiber laser was used to weld high strength steel E36 with a thickness of 6 mm. The main composition (wt.-%) of high strength steel E36 is 0.15C, 1.40Mn, 0.31Si, 0.04Al, and 0.08Ni. The morphology, tensile strength and microhardness of butt joints were studied by using scanning electron microscopy (SEM), a tensile tester and a microhardness tester. The results showed that butt joints of high strength steel E36 consist of a weld seam (WS), a heat affected zone (HAZ) and a base metal (BM). The microstructure of the WS is mainly composed of lath martensite, and the microstructure of the HAZ is mainly composed of martensite, bainite and ferrite. The hardness of the WS increases with an increase in laser power, and the maximum hardness of the butt joint appears in the transition zone between WS and HAZ. When laser power reaches 3500 W, the maximum microhardness is 450 HV. The laser power has little effect on the tensile strength of the butt joint. All tensile specimens were broken at the base material. There is many dimples on the fracture, and the butt joint displays a ductile fracture.
Microstructure and thermal properties of Bi-Sn eutectic alloy
Authors: Manasijević Ivana , Balanović Ljubiša , Stamenković Uroš , Gorgievski Milan , Ćosović Vladan 
Published: February 2020

AbstractAlloys based on Sn and Bi are considered to be one of the best soft lead-free solders due to their low melting temperature and low price. In addition, Bi-Sn alloy with a eutectic composition represents a promising candidate as a metallic phase change material (PCM) for use in the field of thermal energy storage (TES). The accurate knowledge of microstructural and thermophysical properties such as the latent heat of melting, thermal conductivity, specific heat capacity is of crucial importance for PCM selection. Thus, the aim of the current study has been to determine the microstructure, latent heat of melting and thermal conductivity of a eutectic alloy from the binary Bi-Sn system.
HUBUNGAN KELINCAHAN, KECEPATAN, DAN KESEIMBANGAN DENGAN KETERAMPILAN MENGGIRING BOLA PEMAIN SEPAKBOLA UNIVERSITAS BINA DARMA
Authors: Satria M. Haris , Taroreh Bangkit Seandi 
Published: February 2020

Penelitian ini bertujuan untuk mengetahui hubungan kelincahan, kecepatan, dan keseimbangan dengan menggiring bola pemain sepakbola Universitas Bina Darma. Metode yang digunakan dalam penelitian ini menggunakan desain korelasi (Correlational Design) dengan jumlah sampel 17 orang siswa. Populasi dalam penelitian ini yaitu seluruh pemain sepakbola Bina Darma berjumlah 17 orang dan sampel dalam penelitian ini berjumlah 17 orang. Instrumen tes dalam penelitian ini yaitu dogging run, lari 40 meter, modified bass test of dynamic balance, dan menggiring bola. Teknik analisis data menggunakan SPSS statistik 23. Hasil penelitian menunjukkan terdapat hubungan kelincahan dengan menggiring bola (0.019 < 0.005), terdapat hubungan kecepatan dengan menggiring bola (0.027 < 0.005), terdapat hubungan keseimbangan dengan menggiring bola (0.001 < 0.005), dan terdapat hubungan kelincahan, kecepatan dan keseimbangan dengan menggiring bola, nilai Fhitung = 22,35 > Ftabel = 3,411.