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  Subjects -> SCIENCES: COMPREHENSIVE WORKS (Total: 374 journals)
Showing 201 - 265 of 265 Journals sorted alphabetically
Jurnal Teknosains     Open Access  
Jurnal Udayana Mengabdi     Open Access  
Karaelmas Science and Engineering Journal     Open Access  
Karbala International Journal of Modern Science     Open Access  
Kennedy Institute of Ethics Journal     Full-text available via subscription   (Followers: 10)
LOGIKA Jurnal Ilmiah Lemlit Unswagati Cirebon     Open Access  
Makara Journal of Science     Open Access  
Malawi Journal of Science and Technology     Open Access   (Followers: 6)
Maskana     Open Access  
MethodsX     Open Access   (Followers: 1)
Metode & Forskningsdesign     Open Access  
Mètode Science Studies Journal : Annual Review     Open Access  
Middle East Journal of Science     Open Access  
Middle European Scientific Bulletin     Open Access  
Modern Applied Science     Open Access   (Followers: 1)
Momona Ethiopian Journal of Science     Open Access   (Followers: 5)
MUST : Journal of Mathematics Education, Science and Technology     Open Access   (Followers: 4)
Mutis     Open Access  
National Academy Science Letters     Hybrid Journal   (Followers: 3)
National Science Review     Hybrid Journal   (Followers: 1)
Natural Sciences     Open Access  
Natural Sciences Education     Hybrid Journal  
Naturen     Full-text available via subscription  
Nepal Journal of Science and Technology     Open Access  
Network Science     Hybrid Journal   (Followers: 4)
New Directions in the Teaching of Physical Sciences     Open Access   (Followers: 2)
Nordic Journal of Science and Technology     Open Access   (Followers: 2)
Nordic Studies in Science Education     Open Access   (Followers: 3)
Nova     Open Access  
Nuncius     Hybrid Journal   (Followers: 2)
OmniScience : A Multi-disciplinary Journal     Full-text available via subscription  
Open Conference Proceedings Journal     Open Access  
Open Journal of Applied Sciences     Open Access  
Orbis Cógnita : Revista Científica     Open Access   (Followers: 6)
Patterns     Open Access   (Followers: 1)
PENDIPA : Journal of Science Education     Open Access  
People and Nature     Open Access   (Followers: 3)
Población y Desarrollo - Argonautas y caminantes     Open Access  
Politique et Sociétés     Full-text available via subscription   (Followers: 1)
Portal de la Ciencia     Open Access  
Proceedings of the Indian National Science Academy     Full-text available via subscription  
Proceedings of the Linnean Society of New South Wales     Full-text available via subscription   (Followers: 2)
Proceedings of the Royal Society of Queensland, The     Full-text available via subscription  
QScience Connect     Open Access  
RAC: Revista Angolana de Ciências     Open Access  
Rafidain Journal of Science     Open Access  
Rehabilitation Research, Policy, and Education     Hybrid Journal   (Followers: 2)
Rekayasa     Open Access  
Reportes Científicos de la FaCEN     Open Access  
Reports in Advances of Physical Sciences     Open Access  
Research     Open Access   (Followers: 2)
Research Ideas and Outcomes     Open Access  
Research Integrity and Peer Review     Open Access  
Research Policy : X     Open Access   (Followers: 2)
Respuestas     Open Access  
Reviews in Theoretical Science     Full-text available via subscription  
Revista Bases de la Ciencia     Open Access  
Revista Binacional Brasil - Argentina: Diálogo entre as ciências     Open Access  
Revista Brasileira de Iniciação Científica     Open Access  
Revista Catarinense da Ciência Contábil     Open Access  
Revista Ciencia y Tecnología     Open Access  
Revista Ciência, Tecnologia & Ambiente     Open Access  
Revista Científica de la FAREM     Open Access  
Revista Científica de la Universidad Nacional del Este     Open Access   (Followers: 5)
Revista Cientifica Guillermo de Ockham     Open Access  
Revista Científica y Tecnológica UPSE     Open Access  
Revista Conhecimento Online     Open Access  
Revista Crítica de Ciências Sociais     Open Access  
Revista de Ciencia y Tecnología     Open Access  
Revista de Información Científica     Open Access  
Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales     Open Access  
Revista de la Sociedad Científica del Paraguay     Open Access  
Revista de la Universidad del Zulia     Open Access  
Revista Eletrônica Ludus Scientiae     Open Access  
Revista Logos Ciencia & Tecnología     Open Access  
Revista MundoFesc     Open Access  
Revista Politécnica     Open Access  
Revista Saber Digital     Open Access  
Revista Sociedad y Economía     Open Access  
Revista Tecnológica     Open Access  
Revista Theoria     Open Access   (Followers: 1)
Revista UNIMAR     Open Access  
Revista UniVap     Open Access  
Revista Vivências em Ensino de Ciências     Open Access   (Followers: 1)
Rihan Journal for Scientific Publishing     Open Access  
Royal Society Open Science     Open Access   (Followers: 7)
Ruhuna Journal of Science     Open Access  
Sainstek : Jurnal Sains dan Teknologi     Open Access  
SAINSTIS     Open Access  
Sainteknol : Jurnal Sains dan Teknologi     Open Access  
Sakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi     Open Access  
Scholedge International Journal of Multidisciplinary & Allied Studies     Open Access  
Sci     Open Access  
Science     Full-text available via subscription   (Followers: 4370)
Science & Diplomacy     Free   (Followers: 3)
Science & Technology Studies     Open Access   (Followers: 3)
Science Advances     Free   (Followers: 28)
Science and Technology     Open Access   (Followers: 2)
Science Diliman     Open Access  
Science Heritage Journal     Open Access  
Science World Journal     Open Access  
Science, Technology and Arts Research Journal     Open Access   (Followers: 1)
ScienceRise     Open Access  
Sciences du jeu     Open Access  
Sciential     Open Access  
Scientific African     Open Access  
Scientific American     Full-text available via subscription   (Followers: 449)
Scientific American Mind     Full-text available via subscription   (Followers: 10)
Scientific Bulletin     Open Access  
Scientific Data     Open Access   (Followers: 5)
Scientific Journal of Mehmet Akif Ersoy University     Open Access  
Scientific Journal of Pure and Applied Sciences     Open Access   (Followers: 1)
Scientific Reports     Open Access   (Followers: 85)
Scientific World     Open Access  
Scientonomy : Journal for the Science of Science     Open Access   (Followers: 1)
Scienze Regionali : Italian Journal of Regional Science     Full-text available via subscription   (Followers: 18)
Selforganizology     Open Access  
Seminário de Iniciação Científica e Seminário Integrado de Ensino, Pesquisa e Extensão     Open Access  
Simbiótica     Open Access  
SINET : Ethiopian Journal of Science     Open Access   (Followers: 5)
Smart Science     Open Access  
South African Journal of Science     Open Access   (Followers: 2)
South American Sciences     Open Access  
South East European University Review (SEEU Review)     Open Access   (Followers: 2)
Springer Science Reviews     Hybrid Journal   (Followers: 2)
Studies in Science Education     Hybrid Journal   (Followers: 18)
Sultan Qaboos University Journal for Science     Open Access  
Tanzania Journal of Science     Open Access   (Followers: 4)
TD : The Journal for Transdisciplinary Research in Southern Africa     Open Access  
Technologies     Open Access   (Followers: 1)
TECNOSCIENZA: Italian Journal of Science & Technology Studies     Open Access   (Followers: 1)
Temas y Debates     Open Access  
The Innovation     Open Access  
The Scientific World Journal     Open Access  
The Social Studies     Hybrid Journal   (Followers: 3)
The Winnower     Open Access  
Theoria     Open Access   (Followers: 3)
THEORIA : An International Journal for Theory, History and Foundations of Science     Full-text available via subscription   (Followers: 1)
Transactions of Tianjin University     Full-text available via subscription  
Trilogía     Open Access  
TÜBAV Bilim Dergisi     Open Access  
Türk Bilim ve Mühendislik Dergisi     Open Access  
Tydskrif vir Geesteswetenskappe     Open Access  
Uluslararası Bilimsel Araştırmalar Dergisi (IBAD)     Open Access   (Followers: 1)
UNED Research Journal / Cuadernos de Investigación UNED     Open Access  
Uni-pluriversidad     Open Access  
Uniciencia     Open Access  
Universidad, Ciencia y Tecnología     Open Access  
Universitas (León)     Open Access  
Universitas Scientiarum     Open Access  
Unnes Science Education Journal     Open Access  
Vilnius University Proceedings     Open Access  
Walailak Journal of Science and Technology     Open Access  
WikiJournal of Science     Open Access  
World Scientific Research     Open Access  
Zeitschrift für Didaktik der Naturwissenschaften     Hybrid Journal  
Образование и наука     Open Access   (Followers: 1)
Східно-Європейський журнал передових технологій : Eastern-European Journal of Enterprise Technologies     Open Access   (Followers: 3)

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Sainteknol : Jurnal Sains dan Teknologi
Number of Followers: 0  

  This is an Open Access Journal Open Access journal
ISSN (Print) 0216-4566 - ISSN (Online) 2527-3604
Published by Universitas Negeri Semarang Homepage  [45 journals]
  • Pengaruh Penambahan Octane Booster dan Minyak Atsiri dalam Biosolar
           terhadap Performa Mesin Diesel

    • Authors: Okky Husnan Arya Utomo, Samsudin Anis
      First page: 36
      Abstract: Tujuan dalam penelitian ini adalah untuk mengetahui pengaruh penambahan octane booster dan minyak atsiri dalam campuran biosolar terhadap performa mesin diesel. Penelitian ini menggunakan metode penelitian eksperimen. Bahan baku yang digunakan adalah octane booster dan minyak atsiri. Dalam penelitian ini dipaparkan hasil pengujian performa mesin diesel dengan menggunakan dinamometer dengan variasi bahan bakar minyak fraksi diesel dari octane booster dan minyak atsiri dalam campuran biosolar yang meliputi performa mesin diesel berupa torsi dan daya. Penelitian ini dilakukan untuk menganalisis unjuk kerja mesin yang paling optimum dalam penggunaan variasi campuran minyak fraksi diesel dengan bisolar. Hasil penelitian menunjukkan campuran minyak biosolar dengan octane booster dan minyak atsiri berpengaruh pada torsi. Rerata torsi yang dihasilkan oleh mesin diessel telah meningkat setelah dilakukan penambahan octane booster dan minyak atsiri. Torsi yang dihasilkan oleh putaran mesin yang menjadi acuan peneliti yaitu 3500 rpm mengalami peningkatan yaitu sebesar 115,60 Nm dibandingkan dengan biosolar murni pada putaran mesin yang sama dengan 112,77 Nm yaitu pada campuran bahan bakar C4 dengan perbandingan 0,8% + 0,1%. Daya berbanding lurus dengan torsi, maka campuran minyak biosolar dengan octane booster dengan minyak atsiri mempengaruhi daya. Rerata daya yang diperoleh dalam mesin diesel meningkat setelah penambahan octane booster dan minyak atsiri. Daya putaran mesin hasil penelitian yang menjadi acuan peneliti yaitu 3500 rpm mengalami peningkatan yaitu sebesar 42,58 kW dibandingkan dengan biosolar murni pada perputaran mesin yang sama yaitu sebesar 41,34 kW yaitu pada campuran bahan bakar C3 dengan perbandingan 0,8% + 0,3%. 
      PubDate: 2021-12-22
      DOI: 10.15294/sainteknol.v19i2.26482
      Issue No: Vol. 19, No. 2 (2021)
       
  • Voltammetric Analysis of Pb2+ Ion on Gold Nanoparticles-Modified ZnO
           Electrode

    • Authors: Rahmi Fauziah, Cepi Kurniawan
      First page: 46
      Abstract: Waste such as heavy metal is a very dangerous toxic material, the heavy metal that is often used is lead (Pb). In this study, heavy metal detection was carried out with the material used, namely ZnO because it has high sensitivity in heavy metal detection. ZnO will be modified with gold nanoparticles (AuNP). AuNP has been used for surface decoration of oxides to obtain high sensor performance which is 6.5 times faster than without the addition of Au. Research has been carried out on the Voltammetric Analysis of Pb2+ Ion on Gold Nanoparticles-Modified ZnO Electrode. This study aims to determine the nature and characteristics of the ZnO/AuNP compound deposited on the SPCE electrode and to determine the selectivity and sensitivity of the ZnO/AuNP electrodeposition on the SPCE electrode to identify heavy metals. FTIR characterization showed that there was a Zn-O bond in the synthesized compound. SEM characterization showed hexagonal morphology. The PSA results showed the size of the AuNP was 115.7 nm. The test results of the ZnO/AuNP5%/SPCE electrode sensor have a LoD value of 2.88 ppm and a LoQ of 9.60 ppm, a sensitivity of 0.077 µA µg-1 L., and R2 = 0.96862.
      PubDate: 2021-12-22
      DOI: 10.15294/sainteknol.v19i2.33190
      Issue No: Vol. 19, No. 2 (2021)
       
  • Analisis Kandungan Logam Berat Cadmium (CD) pada Udang Putih (Penaeus
           merguiensis) di Perairan Sungsang Provinsi Sumatera Selatan

    • Authors: Yunita Panca Putri, Inka Dahlianah, Ita Emilia
      First page: 59
      Abstract: Aktivitas penduduk  Sungsang Kabupaten Banyuasin Provinsi  Sumatera Selatan cenderung lebih banyak di perairan. Berbagai aktivitas tersebut memiliki kecenderungan untuk membuang limbah ke aliran air sehingga limbah tersebut akan terakumulasi. Akumulasi limbah ini akan menyebabkan pencemaran lingkungan sehingga menjadikan hal ini sebagai masalah yang perlu diperhatikan. Salah satu jenis logam berat yang memasuki perairan dan bersifat toksik adalah kadmium (Cd). Analisis kandungan logam berat pada biota seperti udang perlu dilakukan, hal ini disebabkan kandungan logam berat dalam air yang dapat berubah-ubah dan bergantung pada lingkungan. Tujuan dalam penelitian ini adalah untuk untuk  mengetahui kualitas perairan Sungsang melalui  konsentrasi  logam berat Cd pada sedimen dan  konsentrasi logam berat Cd pada udang putih (Penaeus merguiensis).  Kandungan logam berat Cd  pada sedimen di perairan Sungsang masih memenuhi Standar Baku Mutu menurut Swedish Environmental Protection Agency dan Kandungan Cd pada udang putih (Penaeus merguiensis) di perairan Sungsang belum melebihi batas yang ditetapkan oleh Kepala BPOM RI No HK.00.06.1.52.4011
      PubDate: 2021-12-22
      DOI: 10.15294/sainteknol.v19i2.33378
      Issue No: Vol. 19, No. 2 (2021)
       
  • Metode Stochastic Frontier Analysis untuk Mengukur Efisiensi di Sektor
           Pendidikan

    • Authors: M. Mujiya Ulkhaq
      First page: 65
      Abstract: Efisiensi menjadi salah satu ukuran performansi pada suatu institusi pendidikan. Secara umum, efisiensi didefinisikan sebagai rasio dari output dan input. Pada sektor pendidikan, efisiensi diartikan sebagai ukuran kinerja suatu entitas pendidikan (siswa, sekolah, universitas, bahkan sistem pendidikan suatu negara) untuk menghasilkan suatu output dengan menggunakan input yang ada. Pada literatur ekonomi pendidikan, terdapat dua metode yang sering digunakan untuk mengukur efisiensi, yaitu data envelopment analysis (DEA) dan stochastic frontier analysis (SFA). Penelitian ini membahas metode SFA untuk mengukur efisiensi pada sektor pendidikan dan keuntungan yang didapatkan dibanding apabila menggunakan metode DEA. Fungsi produksi yang kerap digunakan untuk mengukur efisiensi juga akan dibahas di sini. Selain itu, penelitian ini juga akan menampilkan variabel-variabel (input dan output) yang digunakan di literatur untuk mengukur efisiensi pada sektor pendidikan. Penelitian ini diharapkan dapat lebih memperkenalkan metode SFA (khususnya pada peneliti di Indonesia) yang mempunyai berbagai keuntungan namun kurang populer dibandingkan dengan metode DEA.
      PubDate: 2021-12-22
      DOI: 10.15294/sainteknol.v19i2.33553
      Issue No: Vol. 19, No. 2 (2021)
       
  • Qualitatife Test of Papaya Leaves, Cassava Leaves, and Melinjo Leaves as
           Alternative Ingredients for Foods Rich in Vitamin C for the Community

    • Authors: Ariska Septiyani Susanti, Rina Rahayu
      First page: 74
      Abstract: One of the roles of vitamin C in the body is as an antioxidant compound that can counteract free radicals, besides that vitamin C also acts as an immunomodulator that stimulates neutrophil migration, forms oxidants, kills microbes and increases phagocytosis. In addition, vitamin C can reduce the risk of complications in patients who have been exposed to COVID-19, reduce the risk of contracting it, prevent symptoms from appearing and can increase the body's resistance or immunity. The purpose of this study was to determine the presence of vitamin C in papaya leaves (Carica papaya), cassava leaves (Manihot Esculenta), and melinjo leaves (Gnetum gnemon) which can be used as alternative foods rich in vitamin C for the community. This research was conducted with a qualitative method. From the results of observations, the three samples showed positive results for vitamin C. With the results of this study, it is hoped that it can be used as an alternative food ingredient for the community to meet their daily vitamin C needs, especially during the Covid-19 Pandemic like now vitamin C is needed to increase the body's resistance so that it does not susceptible to various diseases.
      PubDate: 2021-12-22
      DOI: 10.15294/sainteknol.v19i2.33737
      Issue No: Vol. 19, No. 2 (2021)
       
 
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