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  Subjects -> SCIENCES: COMPREHENSIVE WORKS (Total: 374 journals)
Showing 201 - 265 of 265 Journals sorted alphabetically
Jurnal MIPA     Open Access  
Jurnal Natural     Open Access  
Jurnal Sains Dasar     Open Access  
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  
Logo STI Science, Technology and Innovation     Open Access   (Followers: 1)
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   (Followers: 3)
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   (Followers: 1)
Open Conference Proceedings Journal     Open Access  
Open Journal of Applied Sciences     Open Access  
Orbis Cógnita : Revista Científica     Open Access   (Followers: 2)
Patterns     Open Access   (Followers: 9)
PENDIPA : Journal of Science Education     Open Access  
People and Nature     Open Access   (Followers: 4)
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   (Followers: 1)
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  
Quantum Science and Technology     Hybrid Journal   (Followers: 5)
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   (Followers: 1)
Reportes Científicos de la FaCEN     Open Access  
Reports in Advances of Physical Sciences     Open Access  
Research     Open Access   (Followers: 6)
Research Ideas and Outcomes     Open Access  
Research Integrity and Peer Review     Open Access  
Research Policy : X     Open Access   (Followers: 4)
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: 3)
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   (Followers: 1)
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   (Followers: 1)
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   (Followers: 1)
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: 4812)
Science & Diplomacy     Free   (Followers: 3)
Science & Technology Studies     Open Access   (Followers: 3)
Science Advances     Free   (Followers: 37)
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: 482)
Scientific American Mind     Full-text available via subscription   (Followers: 10)
Scientific Bulletin     Open Access  
Scientific Data     Open Access   (Followers: 6)
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: 92)
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: 3)
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   (Followers: 1)
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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Science Diliman
Number of Followers: 0  

  This is an Open Access Journal Open Access journal
ISSN (Print) 0115-7809 - ISSN (Online) 2012-0818
Published by U of the Philippines Diliman Homepage  [2 journals]
  • From the Editor

    • Authors: Carlos Primo C. David; Ph.D.
      Abstract: We are finally adapting to the new normal of the COVID-19 pandemic, realizing how a global health issue can disrupt every aspect of society. It showed us how scientists can step up and create vaccines in record time to manage a pandemic, when the process could very well have extended beyond two years. A few positives came out of our pandemic experience as reported by both local and international researchers, such as improvements in the natural environment as anthropogenic activities slowed down. This includes a temporary decrease in greenhouse gas emissions, improvement in air and water quality, and the general recovery of natural ecosystems. Though the four articles in this issue—my first as editor-inchief of Science Diliman (SD)—are not directly related to COVID-19, they all connect to health and biodiversity, two human concerns that were greatly affected by the pandemic.
      Two very different ecosystems are highlighted in this SD issue. The first is discussed in the paper by Que et al. about the latest phylogeny research on Philippine cockatoos of the forests of Palawan. This paper places the local species that are most related to Tanimbar corellas of Indonesia and the Western corellas of southwest Australia. The second kind of ecosystem is discussed in the paper by Pasumbal et al. about the latest biodiversity survey of non-avian vertebrates found in the UP Diliman campus. This updates a similar survey in 1998, with the latest survey reporting the presence of additional animals: two amphibians, seven reptiles, and six new mammals. The survey affirms the high species richness found on our campus.
      Tambago and Amor of the UP Institute of Chemistry present their findings on two chalcone derivatives extracted from the leaves of S. samarangense (Blume) Merr. (Java apple) that show anti-inflammatory properties. This could very well lead to the development of a new class of anti-inflammatory drugs. Similarly, the paper authored by Genio and Paderes (also of the UP Diliman Institute of Chemistry) reports the synthesis of white powder precipitates composed of bis-urea compounds. Their anti-microbial properties were tested against different microorganisms with several identified compounds showing promising results.
      As universities go back to a sense of normalcy this year, we hope that local researchers are able to resume the work on projects put on hold as well as jumpstart new research studies. Carlo Primo C. David, Ph.D.
      Editor-in-Chief
      PubDate: 2022-09-23
      Issue No: Vol. 34, No. 1 (2022)
       
  • Chalcone Derivatives with Cyclooxygenase Inhibiting Activity

    • Authors: Gian Carlo Tambago, Evangeline C. Amor
      Abstract: Dimethylcardamonin (DMC) or (E)-2’,4’-dihydroxy-6’-methoxy-3’,5’-dimethyl chalcone was isolated from Syzygium samarangense (Blume) Merr. leaves using vacuum liquid chromatography and normal phase silica-gel column chromatography. DMC was purified from the fraction that eluted out of 9:1 (v/v) hexane: ethyl acetate to 7:3 (v/v) hexane: ethyl acetate. Using a modified method from Geissman (1948), DMC was derivatized via alkaline peroxidation from which compounds A and B were obtained. Compound A was identified to be (2S)-7- hydroxy-5-methoxy-6,8-dimethyl flavanone (C18H18O4 ) while B had a methoxy group on its 4’ position instead of a hydroxyl group with respect to DMC. The flavanone derivative may have been formed due to substituent effects on the ring. DMC, A, and B were tested for their inhibitory activity against cyclooxygenase enzymes at 10 and 100 ppm. A and B gave at least 50% inhibitory activity at 100 ppm and were found to be COX-2 selective inhibitors. DMC was inactive at both 10 and 100 ppm.
      PubDate: 2022-09-23
      Issue No: Vol. 34, No. 1 (2022)
       
  • An Updated Inventory and Habitat Association Analysis of the Non-avian
           Vertebrates of the University of the Philippines (UP) Diliman

    • Authors: Romel V. Pasumbal Jr., Jelaine L. Gan, Geoffrey Jules N. Solidum, Nappy L. Navarra
      Abstract: An inventory of the non-avian terrestrial vertebrate species found within the 493-hectare land area of the UP Diliman campus is presented. Visual encounter surveys for amphibians and reptiles, as well as mist-netting and trapping for mammals, were conducted last August 2019 to early February 2020 on selected study grids on campus. To determine habitat associations, the species richness of each vertebrate class (i.e., amphibia, reptilia, and mammalia) was analyzed with habitat characteristics of the grid using regression analysis. Based on the surveys and recent records (2015 onwards) in literature, a total of 33 species were recorded: seven amphibians, 15 reptiles, and 11 mammals. Comparison with historical records from 1998 revealed that an additional two amphibian species, seven reptile species, and six mammalian species have been sighted within the area since 2015. However, a fork-tongued frog, falling under the genus Fejervarya, and four reptilian species that had previously been recorded within the study sites were not observed. Habitat association analysis revealed that building area is correlated with species richness, with reptilian species richness being positively correlated with it. Overall, this study shows that the UP Diliman campus supports considerable urban biodiversity despite recent developments.  
      PubDate: 2022-09-23
      Issue No: Vol. 34, No. 1 (2022)
       
  • Evaluation of Low Molecular Weight Bis-Urea Derivatives as Antimicrobial
           Agents

    • Authors: Frances Abygail F. Genio, Monissa C. Paderes
      Abstract: Antibiotic resistance against common microbes is an ongoing concern worldwide. This warrants continuous studies that aim to discover new compounds with antimicrobial properties. In this study, sixteen low molecular weight bis-urea derivatives were screened for their in vitro antimicrobial properties using agar well diffusion method. The structure of the bis-urea compounds is comprised of cyclic and aromatic linkers and a variety of symmetric end groups such as aliphatic chains and heteroaromatic groups. Significant antimicrobial activity against strains of Escherichia coli, Staphylococcus aureus, and Klebsiella pneumoniae was observed for compounds with long aliphatic chains compared to those with benzyl and heteroaromatic end groups. Further studies on the minimum inhibitory concentration and cytotoxicity can aid in the development of these compounds as antimicrobial agents as well as for other possible biomedical and environmental applications.
      PubDate: 2022-09-23
      Issue No: Vol. 34, No. 1 (2022)
       
  • Phylogenetic Placement of the Philippine Cockatoo Cacatua haematuropygia
           (P.L.S. Muller 1776) Based on a Partial Mitochondrial Genome

    • Authors: Gerard Clinton L. Que, Ian Kendrich C. Fontanilla, Peter Widmann, Indira Dayang L. Widmann
      Abstract: An 18,493 base pair mitogenome of the Philippine Cockatoo (Cacatua haematuropygia) is presented, containing 13 complete protein-coding genes, two rRNAs, 24 tRNAs, two control regions, and two partial duplicate copies of cytb and nd6. The mitogenome contains two complete copies of tRNA-Leu, tRNA-Ser, tRNA-Thr, and tRNA-Pro. Phylogenetic analysis places the Philippine Cockatoo within the subgenus Licmetis, with its closest relatives being the Tanimbar Corella (Cacatua goffiniana) and the Western Corella (Cacatua pastinator) and all three species being sisters to other white cockatoos in the subgenus Cacatua. The gene order and content of the mitogenome are most similar to C. pastinator, containing a partial duplication of cytb, and whole duplications of the control region and several tRNA genes. However, the total duplication of nd6 could not be verified. Analysis of the control regions indicates that these are paralogs of each other; both copies contain preserved features such as the Extended Termination Associated Sequences 1 and 2 (ETAS1, ETAS2) and Conserved Sequence Block 1 (CSB1) associated with d-loop or control region replication in mitogenomes. Gene order for the species cannot be verified since the region corresponding to duplicate copies of tRNA-Glu and nd6 in other cockatoos could not be properly sequenced.
      PubDate: 2022-06-28
      Issue No: Vol. 34, No. 1 (2022)
       
 
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