• Khảo sát sự phân hủy toluene và chlorotoluene bởi vi khuẩn Comamonas testosterone KT5 cố định trong alginateKhảo sát sự phân hủy toluene và chlorotoluene bởi vi khuẩn Comamonas testosterone KT5 cố định trong alginate

    Tóm tắt: Toluene cũng như chlorotoluene là những hợp chất được sử dụng phổ biến và thường được phát hiện trong môi trường bị ô nhiễm, nhất là môi trường nước. Vi khuẩn Comamonas testosterone KT5 có khả năng phân hủy hiệu quả các chất này. Khảo sát khả năng làm sạch toluene cũng như chlorotoluene trong môi trường đất và nước của vi khuẩn Comamon...

    pdf6 trang | Chia sẻ: thanhle95 | Ngày: 08/07/2021 | Lượt xem: 616 | Lượt tải: 0

  • Enhancement in graphitization of ordered mesoporous carbon by assistance of soybean oil surfactantEnhancement in graphitization of ordered mesoporous carbon by assistance of soybean oil surfactant

    Abstract: In this work, highly ordered mesoporous graphitic carbon (G-CMK3) has been prepared successfully by a nano-casting method using sucrose as carbon source, mesoporous silica as hard template, and soybean oil as surfactant. In the absence of soybean oil surfactant, the synthesized ordered mesoporous carbon material, CMK-3, revealed a low ...

    pdf7 trang | Chia sẻ: thanhle95 | Ngày: 08/07/2021 | Lượt xem: 651 | Lượt tải: 0

  • Effects of chitosan concentration on the quality and storage time of poultry eggsEffects of chitosan concentration on the quality and storage time of poultry eggs

    Abstract This paper presents some results associated with physicochemical changes of fresh duck eggs after being preserved by chitosan membranes at different concentrations. Chitosan coating at the concentration of 1.5% worked best for preserving fresh duck eggs at normal temperature. The number of total Coliforms after 30 days was 30 Coliforms...

    pdf6 trang | Chia sẻ: thanhle95 | Ngày: 08/07/2021 | Lượt xem: 595 | Lượt tải: 0

  • Effect of UV filtering on dye-sensitised solar cellsEffect of UV filtering on dye-sensitised solar cells

    Abstract: This work aimed to investigate the effect of commercial UV filter films (PS65, SEC04) on the performance and long-term outdoor stability of dye-sensitised solar cells (DSCs). The application of UV filter films to the DSCs lead to a slight decrease in cell performance. However, the cell performance remained constant after 2,000 h of out...

    pdf5 trang | Chia sẻ: thanhle95 | Ngày: 08/07/2021 | Lượt xem: 651 | Lượt tải: 0

  • Effect of preparation conditions on arsenic rejection performance of polyamide-based thin film composite membranesEffect of preparation conditions on arsenic rejection performance of polyamide-based thin film composite membranes

    Abstract: Herein, a polyamide-based thin film composite (TFC) membrane was fabricated for the removal of arsenic (As) from water. The polyamide thin film was synthesized through interfacial polymerization (IP) onto a polysulfone porous substrate. A Box-Behnken design of response surface methodology was used to investigate the effect of preparat...

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  • Effect of molecular charge asymmetry on even-to-odd ratio of high-order harmonic generationEffect of molecular charge asymmetry on even-to-odd ratio of high-order harmonic generation

    Abstract. Recently, asymmetric molecules, such as HeH+ 2 , CO, OCS, HCl, have been evolved much attention since its rich information in the high-order harmonic generation (HHG), whose ratio of adjacent even and odd harmonics characterizes the asymmetry of molecules. In this paper, we study the dependence of even-to-odd ratio on the asymmetric par...

    pdf12 trang | Chia sẻ: thanhle95 | Ngày: 08/07/2021 | Lượt xem: 546 | Lượt tải: 0

  • Effect of 0.5 at.% indium addition on thermoelectric properties of gallium doped-zinc oxide bulkEffect of 0.5 at.% indium addition on thermoelectric properties of gallium doped-zinc oxide bulk

    Abstract. Thermoelectrics (TE) is well-known as a non-smoke technology for electricity production from waste heat and for greenhouse effect reduction. Enhancing power factor (PF = S2, where S is Seebeck coefficient and  is electrical conductivity) and figure of merit of TE materials to achieve high-performance TE devices has attracted much sci...

    pdf6 trang | Chia sẻ: thanhle95 | Ngày: 08/07/2021 | Lượt xem: 573 | Lượt tải: 0

  • Dolabrane-type diterpenoid and lignan constituents from the stem barks of ceriops decandra (Griff.) W. TheobDolabrane-type diterpenoid and lignan constituents from the stem barks of ceriops decandra (Griff.) W. Theob

    Abstract. Three dolabrane-type diterpenoids (1–3) and a lignan (4) were isolated from a methanolic extract of C. decandra (Griff.) W. Theob. stem barks using various chromatographic separations. Their structures were elucidated to be tagalsine X (1), tagalsin P (2), ent-5α,2- oxodolabr-3-ene-3,15,16-triol (3), and pinoresinol (4) by detailed ana...

    pdf7 trang | Chia sẻ: thanhle95 | Ngày: 08/07/2021 | Lượt xem: 701 | Lượt tải: 0

  • Synthesis of magnetic biochar and their application for the treatment of methylene blue in waterSynthesis of magnetic biochar and their application for the treatment of methylene blue in water

    Abstract: Magnetic biochar materials were synthesized by heating rice husk at 500°C under nitrogen environment, then fixing iron oxides on biochar surface using hydrothermal method applied to Fe(OH)2 and Fe(OH)3 which were generated from respective precursors Fe2+ and Fe3+ in alkaline environment. The presence of iron oxides on the surface of bi...

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  • A study on synthesis and properties of SAPs based on carboxymethyl celluloseA study on synthesis and properties of SAPs based on carboxymethyl cellulose

    Abstract: Carboxymethyl cellulose-graft-poly(acrylic acidSodium acrylate-acrylamide) SAPs have been prepared by the free-radical grafting solution polymerization of acrylic acid (AA) and acrylamide monomers (AM) onto carboxymethyl cellulose (CMC) in the presence of N,N′-methylenebisacrylamide as a crosslinker (MBA) and ammonium persulfate (AP...

    pdf7 trang | Chia sẻ: thanhle95 | Ngày: 08/07/2021 | Lượt xem: 528 | Lượt tải: 0