Showing 1,561 - 1,580 results of 2,288 for search '"hydrogen"', query time: 0.05s Refine Results
  1. 1561

    Dynamic and Static Nature of Br4σ(4c–6e) and Se2Br5σ(7c–10e) in the Selenanthrene System and Related Species Elucidated by QTAIM Dual Functional Analysis with QC Calculations by Satoko Hayashi, Taro Nishide, Waro Nakanishi

    Published 2020-01-01
    “…The ABr-∗-ABr and ABr-∗-BBr interactions are predicted to have the CT-TBP (trigonal bipyramidal adduct formation through charge transfer) nature and the typical hydrogen bond nature, respectively. The nature of Se2Br5σ(7c–10e) is also clarified typically, employing an anionic model of [Br-Se(C4H4Se)-Br---Br---Br-Se(C4H4Se)-Br]−, the 1,4-diselenin system, rather than (BrSeC12H8)Br---Se---Br-Br---Br-Se(C12H8Se)-Br, the selenanthrene system.…”
    Get full text
    Article
  2. 1562

    An Enthusiastic Glance in to the Visible Responsive Photocatalysts for Energy Production and Pollutant Removal, with Special Emphasis on Titania by Padikkaparambil Silija, Zahira Yaakob, Viswanathan Suraja, Njarakkattuvalappil Narayanan Binitha, Zubair Shamsul Akmal

    Published 2012-01-01
    “…Various applications of photocatalysts including photocatalytic treatment of waste water, pesticide degradation and water splitting to produce hydrogen are summarized. The development of photocatalysts that function under visible light for the efficient utilization of sunlight is an area of current interest and thus the different methods of preparation for the visible active photocatalysts are also explored.…”
    Get full text
    Article
  3. 1563
  4. 1564

    A Universal Source DC–DC Boost Converter for PEMFC-Fed EV Systems With Optimization-Based MPPT Controller by C. H. Hussaian Basha, Shaik Rafikiran, Ezzeddine Touti, Besma Bechir Graba, Mouloud Aoudia

    Published 2024-01-01
    “…In this work, a proton exchange membrane fuel stack (PEMFS) technology is selected for energy feeding to the hydrogen vehicle. The merits of this stack are more abundant, faster fuel stack operational response, and more efficient for electrical automotive networks. …”
    Get full text
    Article
  5. 1565

    Development of simplified treatment methods for removal of Ra-226 and Ra-228 from sludge waste produced in natural gas processing plants by Ayman M. Sharaf, M.A. El-Nahal, Islam M. Nabil, I.H. Saleh, Mohamed Elsafi

    Published 2025-02-01
    “…The suggested method is designed to be simple, applicable, economically beneficial, and environmentally safe, by using internal available resources like emitted hydrogen sulfide and sodium hydroxide, also reduction of chemicals that used in radioactivity treatment to be sulfuric acid or sodium hydroxide instead of multiple different chemicals that used in other treatment procedures. …”
    Get full text
    Article
  6. 1566

    Sustainable Downstream Separation of Itaconic Acid Using Carbon-Based Adsorbents by Alejandra Ortíz-de-Lira, Hilda Elizabeth Reynel-Ávila, Lizbeth Liliana Díaz-Muñoz, Didilia Ileana Mendoza-Castillo, Tejraj M. Aminabhavi, Michael Badawi, Adrián Bonilla-Petriciolet

    Published 2022-01-01
    “…Itaconic acid separation was exothermic and pH-dependent where electrostatic forces and hydrogen bonding were the main adsorption interactions. …”
    Get full text
    Article
  7. 1567

    Chemical heat derived from rocket-borne WADIS-2 experiment by Mykhaylo Grygalashvyly, Boris Strelnikov, Irina Strelnikova, Markus Rapp, Franz-Josef Lübken, Corinna Schütt, Claudia Stephan, Martin Eberhart, Stefan Löhle, Stefanos Fasoulas

    Published 2024-12-01
    “…Furthermore, we determine the heating efficiency for one of the most significant reactions of atomic hydrogen with ozone and illustrate the methodology for such calculations based on known atomic oxygen and temperature. …”
    Get full text
    Article
  8. 1568

    The Adsorption of Copper, Lead Metal Ions, and Methylene Blue Dye from Aqueous Solution by Pure and Treated Fennel Seeds by Ntandokazi Mabungela, Ntaote David Shooto, Fanyana Mtunzi, Eliazer Bobby Naidoo

    Published 2022-01-01
    “…Postadsorption analysis revealed that adsorption of Pb(II) and Cu(II) was controlled mainly by the electrostatic attraction, while that of MB was synergistic of electrostatic attraction, π-π interaction, and hydrogen bond. It was found that the uptake processes of MB dye onto all adsorbents fitted Freundlich while both cations were described by Langmuir model. …”
    Get full text
    Article
  9. 1569

    Genesis of the Bairendaba Ag-Zn-Pb Deposit, Southern Great Xing’an Range, NE China: A Fluid Inclusion and Stable Isotope Study by Shunda Li, Keyong Wang, Yicun Wang, Xuebing Zhang, Hongyan Quan

    Published 2017-01-01
    “….% NaCl equivalent, respectively. Oxygen and hydrogen isotope data indicate the interaction of a magmatic fluid with wall rocks in early mineralization, followed by the introduction of meteoric water during late-stage mineralization. …”
    Get full text
    Article
  10. 1570

    Propionate metabolism in Desulfurella acetivorans by Eugenio Pettinato, Thomas M. Steiner, Eric A. Cassens, Thomas Geisberger, Christian Seitz, Simone König, Wolfgang Eisenreich, Ivan A. Berg

    Published 2025-02-01
    “…Desulfurella acetivorans is a strictly anaerobic sulfur-reducing deltaproteobacterium that can grow heterotrophically by oxidation of acetate or autotrophically with molecular hydrogen. Here we show that D. acetivorans possesses a putative operon encoding enzymes of the methylcitrate cycle of propionate oxidation and demonstrate that this bacterium is capable of propionate growth. …”
    Get full text
    Article
  11. 1571

    Peroxidase-like activity of citrate-functionalized magnetite nanoparticles augmented its antibacterial potency by Haitham Al-Madhagi, Abd Alraouf Tarabishi, Fatima Al-Zahra Hamsho, Zaher Tahan, Lama Alchab, Wassim Abdelwahed

    Published 2025-01-01
    “…Their testing as antibacterial agents showed enhanced efficacy when hydrogen peroxide was introduced at a volumetric ratio of 25 µL:75 µL against both strains. …”
    Get full text
    Article
  12. 1572

    Hydrogeology and Hydrogeochemistry of the Lauria Mountains Northern Sector Groundwater Resources (Basilicata, Italy) by Filomena Canora, Giovanna Rizzo, Simona Panariello, Francesco Sdao

    Published 2019-01-01
    “…To identify the aquifer’s recharge areas, the environmental stable isotopes oxygen and hydrogen, deuterium, and 18O were analysed. The unaltered δ18O and δD signatures for the groundwater of the major springs allows identifying the recharge area of these emergencies at elevations ranging from 900 m to 1000 m (a.s.l.), pointing out the presence of deeper flow regime feeding of these springs. …”
    Get full text
    Article
  13. 1573

    Exogenous dopamine application ameliorates chilling injury and preserves quality of kiwifruit during cold storage by Morteza Soleimani Aghdam, Zeinab Asle-Mohammadi, Amin Ebrahimi, Farhang Razavi

    Published 2025-01-01
    “…Additionally, lower endogenous hydrogen peroxide (H2O2) accumulation along with higher ascorbic acid accumulation in kiwifruits treated with 150 µM dopamine could be attributed to lower superoxide dismutase (SOD) along with higher catalase (CAT) enzymes activity. …”
    Get full text
    Article
  14. 1574

    Simulation of Surface Segregation in Nanoparticles of Pt-Pd Alloys by Jose Brito Correia, Ana Isabel de Sá

    Published 2025-01-01
    “…Platinum (Pt) and palladium (Pd) are crucial in hydrogen energy technologies, especially in fuel cells, due to their high catalytic activity and chemical stability. …”
    Get full text
    Article
  15. 1575

    Theoretical study on the conformation-dependent charge transfer of the excited state of dopamine by Huan An, Asiya, Gulmire Yaermaimaiti, Bumaliya Abulimiti, Mei Xiang, Xiaoning Wang

    Published 2025-01-01
    “…Through charge transfer, it has been speculated that dopamine molecules exist in a coiled state in an organism and interact with water to form N,N-dihydroxydopamine, or hydrogen bonds for better information transmission.…”
    Get full text
    Article
  16. 1576

    Detailed Molecular Dynamics of the Photochromic Reaction of Spiropyran: A Semiclassical Dynamics Study by Gaohong Zhai, Shuai Shao, Shaomei Wu, Yibo Lei, Yusheng Dou

    Published 2014-01-01
    “…The main simulation results show that one pathway involves hydrogen out-of-plane (HOOP) torsion of phenyl ring nearby N atom in 254 fs on the excited state and the isomerization from cis- to trans-SP that is complete in about 10 ps on the ground state after the electron transition πσ*; the other dominate pathway corresponds to the ring-opening reaction of trans-SP to form the most stable merocyanine (MC) product. …”
    Get full text
    Article
  17. 1577

    Removal of Heavy Metal Ions Using the Fungus by Ridvan Say, Nalan Yilmaz, Adil Denizli

    Published 2003-09-01
    “…Under acidic conditions, the heavy metal ion loading capacity increased with increasing pH, presumably as a result of heavy metal speciation and competition with hydrogen ions for the same binding sites. The adsorption of heavy metal ions attained a plateau value at ca. pH 5.0. …”
    Get full text
    Article
  18. 1578

    Numerical Investigation of the Coupling Effects of Pulsed H<sub>2</sub> Jets and Nanosecond-Pulsed Actuation in Supersonic Crossflow by Keyu Li, Jiangfeng Wang

    Published 2025-01-01
    “…The innovation of this study lies in proposing and exploring a potential method to address inadequate combustion under high-speed inflow conditions, which couples NS-SDBD with pulsed hydrogen jets.…”
    Get full text
    Article
  19. 1579

    Management of a Female Patient with Irritable Bowel Syndrome and Somatoform Disorder by E. A. Trush, E. A. Poluektova, A. G. Beniashvili, O. S. Shifrin

    Published 2023-02-01
    “…No abnormal changes were detected in examination at the clinic (complete blood count, serum chemistry tests, urinalysis or fecal tests, hydrogen and methane breath tests with lactulose, abdominal ultrasound, esophagogastroduodenoscopy, colonoscopy). …”
    Get full text
    Article
  20. 1580

    The Arab world on the verge of the energy transition: Challenges, ambitions, and limits to growth by A. O. Filonik, V. N. Baturina

    Published 2022-10-01
    “…The authors note that these countries actively experiment with all known renewable energy sources, including hydrogen-based, but at the same time, they are seeking to develop nuclear power. …”
    Get full text
    Article