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  1. 241

    Structural Phase Transitions in the Double Salts (NH<sub>4</sub>)<sub>2</sub>PO<sub>3</sub>F·NH<sub>4</sub>NO<sub>3</sub> and (NH<sub>4</sub>)<sub>2</sub><i>X</i>O<sub>4</sub>·3NH<... by Matthias Weil, Thomas Häusler, Barbara Bonneau, Ekkehard Füglein

    Published 2023-11-01
    “…The two A<i>X</i>·3AN double salts transform upon cooling from a disordered monoclinic crystal structure (<i>P</i>2<sub>1</sub>, <i>Z</i> = 2) to a monoclinic polymorph with a doubled unit cell (<i>P</i>2<sub>1</sub>/<i>c</i>, <i>Z</i> = 4). …”
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    Recovery of Ammonium Metavanadate from Spent Catalyst by Lienda Aliwarga, Maya Ramadianti Musadi

    Published 2020-02-01
    “…Crystals of NH4VO3 with yield of 60% on spent catalysts and purity of 75% were obtained by extraction using solvent Na2CO3 1.887 M for 60 minutes at room temperature with weight ratio of V2O5 in spent catalyst toward solvent volume (Rvp), 0.006 gram V2O5/mL Na2CO3. …”
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    Water-induced accelerated ion diffusion: voltammetric studies in 1-methyl3-[2,6-(S)-dimethylocten-2-yl]imidazolium tetrafluoroborate, 1-butyl-3-methylimidazolium tetrafluoroborate... by Schroder, U, Wadhawan, J, Compton, R, Marken, F, Suarez, P, Consorti, C, de Souza, R, Dupont, J

    Published 2000
    “…The electrochemical properties of the room temperature ionic liquids 1-butyl-3-methylimidazolium tetrafluoroborate (BMIM+BF4-), 1-butyl-3-methylimidazolium hexafluorophosphate (BMIM+PF6-) and 1-methyl-3-[2,6-(S)-dimethylocten-2-yl]imidazolium tetrafluoroborate (MDIM+BF4-) as solvents have been studied using micro-samples, with a volume of 10 μL, of the ionic liquids under vacuum conditions and under conditions with controlled gas and moisture supplies. …”
    Journal article
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    Fabrication of Spiny-like Spherical Copper Metal–Organic Frameworks for the Microextraction of Arsenic(III) from Water and Food Samples before ICP-MS Detection by Mohamed A. Habila, Zeid A. ALOthman, Mohamed Sheikh, Saleh O. Alaswad

    Published 2023-09-01
    “…The optimum conditions for the recovery of the arsenic(III) were a pH of 7 and the use of a sample volume up to 40 mL. …”
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  13. 253

    Properties of Porous InGaNbased Hydrogen Gas Sensor by Radzali, R., Hassan, Z., Zainal, N., Yam, F.K.

    Published 2015
    “…The PUporous lnGaN gas sensor showed higher sensitivity than the as-grown lnGaN gas sensor upon introduction to 0.1% H2 in N2 at room temperature. The high sensitivity of porous gas sensor was due to thehigh surface to volume ratio of the porous structure. …”
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    Conference or Workshop Item
  14. 254

    Fuel gases from pyrolysis of waste Polyethylene sachets by T Ademiluyi, TA Adebayo

    Published 2010-06-01
    “…Production of fuel oil from waste polyethylene led to production of large volume of gaseous products, some of which are non-condensable at room temperature. …”
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    Extraction of kappa carrageenan from local edible seaweed by Siti Mahira, Ahmad

    Published 2014
    “…The KOH solutions ( concentrations 0.03,0.05, 0.1M) were used as extracting solvent. Extraction process was carried out in oil bath with a constant ratio of seaweed weight to solvent volume ( 1:20 g/ml) at temperatures (80, 90, 100 ℃) for 1,2,3, and 4 hours. …”
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    Undergraduates Project Papers
  18. 258

    Defects mediated weak ferromagnetism in Zn1−y C y O (0.00 ≤ y ≤ 0.10) nanorods semiconductors for spintronics applications by Saif Ullah Awan, M. Tanveer Akhtar, Danish Hussain, Saqlain A. Shah, Syed Rizwan, Mohsin Rafique, Abdus Samad, M. Arshad

    Published 2023-10-01
    “…XRD analysis confirmed a decrease in the unit cell volume after doping C into the ZnO matrix, likely due to the incorporation of carbon at oxygen sites (CO defects) resulting from ionic size differences. …”
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  19. 259

    Molecular and Carbon Isotopic Variation during Canister Degassing of Terrestrial Shale: A Case Study from Xiahuayuan Formation in the Xuanhua Basin, North China by Jia Tao, Jinchuan Zhang, Junlan Liu, Yang Liu, Wei Dang, Haicheng Yu, Zhe Cao, Sheng Wang, Zhe Dong

    Published 2021-08-01
    “…Moreover, we find that there is only a small variation in δ<sup>13</sup>C<sub>1</sub> in shale samples with high permeability and relatively undeveloped micropores, which is similar to the limited δ<sup>13</sup>C<sub>1</sub> variation in conventional natural gas. …”
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  20. 260

    Sorption materials for indoor environment cleaning from microorganisms by Golubev Ivan, Vlasov Dmitriy, Tsarovtseva Inga, Mayorova Margarita, Chipizubov Vitalii, Shaposhnikov Nikita

    Published 2022-12-01
    “…The filtration materials properties were studied using a set of analytical methods. The air was pumped through tested materials in a volume of 500–2000 liters with the use of PU-1B sampling device depositing microorganisms on the nutrient medium. …”
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    Article