• Chronic effects of silver nanoparticles on micro-crustacean Daphnia lumholtziChronic effects of silver nanoparticles on micro-crustacean Daphnia lumholtzi

    Abstract: This study aimed to enhance our insight on the potential toxicological effects of silver nanoparticles (AgNPs) into the aquatic environment. To investigate the chronic toxicity of nanoparticles, freshwater micro-crustacean Daphnia lumholtzi was exposed to different concentrations of 0.2, 0.5 µg/l AgNPs, and control, for 21 days. Toxico...

    pdf8 trang | Chia sẻ: thanhle95 | Ngày: 08/07/2021 | Lượt xem: 372 | Lượt tải: 0

  • Development of a device based on the respirometric principle for long-term monitoring of BOD and pH: A novel approach in wastewater characterisationDevelopment of a device based on the respirometric principle for long-term monitoring of BOD and pH: A novel approach in wastewater characterisation

    Abstract: Biochemical oxygen demand (BOD) and pH are two important parameters in environmental analysis that allow the assessment of water quality. Although the long-term determination of BOD and pH can provide more useful information about the wastewater characteristics, present commercial BOD devices do not usually meet this demand. This ...

    pdf5 trang | Chia sẻ: thanhle95 | Ngày: 08/07/2021 | Lượt xem: 338 | Lượt tải: 0

  • Modification of Alkyd with Epoxy and its Application for Paint - Part 1: Epoxy Alkyd Ester Manufacturing and some Properties of Paint made from this EsterModification of Alkyd with Epoxy and its Application for Paint - Part 1: Epoxy Alkyd Ester Manufacturing and some Properties of Paint made from this Ester

    Abstract: The article introduces the modification of alkyd resin by epoxy resin to make epoxy alkyd ester. The study investigated the effects of reflux xylene content, the proportion of the constituents participating in the esterification reaction on the reaction processing and acidity index of the product. The infrared (IR) spectroscopy results...

    pdf9 trang | Chia sẻ: thanhle95 | Ngày: 08/07/2021 | Lượt xem: 358 | Lượt tải: 0

  • Nghiên cứu sử dụng đá ong biến tính trong quá trình Fenton dị thể để xử lý chất nhuộm màuNghiên cứu sử dụng đá ong biến tính trong quá trình Fenton dị thể để xử lý chất nhuộm màu

    TÓM TẮT Trong nghiên cứu này, đá ong được biến tính bằng muối sắt (III) sunfat (Lat-Fe) sử dụng cho quá trình Fenton dị thể để loại bỏ chất nhuộm màu hữu cơ Reactive Yellow 160 (RY 160). Các đặc trưng cơ bản về thành phần hoá học, hình thái bề mặt và diện tích bề mặt riêng của đá ong sau biến tính được xác định thông qua phổ tán xạ năng lượng E...

    pdf10 trang | Chia sẻ: thanhle95 | Ngày: 08/07/2021 | Lượt xem: 347 | Lượt tải: 0

  • Pectin bioplastic films regenerated from dragon fruit peelsPectin bioplastic films regenerated from dragon fruit peels

    Abstract: Pectin extracted from dragon fruit peels was used to prepare pectin-based membranes by mixing with the plasticized agent polyethylene glycol (PEG) at pectin to PEG ratios of 5:1, 3:1, and 1:1. SEM images showed the resulting bioplastic films had a transparent yellowish surface without pores or cracks. The water content of the biopl...

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  • Comparison and applicability of Agilent EMR-Lipid and Captiva EMR-Lipid Sorbents in QuEChERS method for food analysisComparison and applicability of Agilent EMR-Lipid and Captiva EMR-Lipid Sorbents in QuEChERS method for food analysis

    Abstract: Agilent’s innovative EMR-Lipid and Captiva EMRLipid sorbents efficiently replace the traditional QuEChERS d-SPE clean-up products in selective lipid removal from fatty matrices, thus improving instrumental analytical reproducibility, reliability, and long-term use. These products have dual functionality; a hydrophobic interaction be...

    pdf7 trang | Chia sẻ: thanhle95 | Ngày: 08/07/2021 | Lượt xem: 335 | Lượt tải: 0

  • Determination of xanthophylls compounds in dietary supplements by HPLC-PDADetermination of xanthophylls compounds in dietary supplements by HPLC-PDA

    Abstract Adetermination of astaxanthin, lutein, and zeaxanthin in dietary supplements. These compounds n HPLC method using photodiode array detector (PDA) detector has been developed for the were separated on a C30 chromatography column with ethyl acetate: acetonitrile (12:88, v/v) containing 0.1% n-decanol as the mobile phase. Xanthophyll compo...

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  • Determination of Phytosterols in vegetable oils by GC-MS methodDetermination of Phytosterols in vegetable oils by GC-MS method

    Abstract In this study, a method for determination of six phytosterols by gas chromatography-mass spectrometry with derivatization in vegetable oils was validated. The samples were hydrolyzed in an alkaline media at 70°C for 60 min. Then, the samples were performed liquid-liquid extraction with toluene. The phytosterols are derivatized to trime...

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  • Determination of illegal colorants in grilled meats by liquid chromatography-tandem mass spectrometryDetermination of illegal colorants in grilled meats by liquid chromatography-tandem mass spectrometry

    Abstract An analytical method using liquid chromatography-tandem mass spectrometry (LCMS/MS) was validated for the simultaneous determination of three illegal colorants including chrysoidine G, para red, and pararosaniline in grilled meat. The meat samples were homogenized and extracted by QuEChERS, and analyzed by LC-MS/MS. Good linearity was o...

    pdf10 trang | Chia sẻ: thanhle95 | Ngày: 08/07/2021 | Lượt xem: 330 | Lượt tải: 0

  • Đề cương chi tiết học phần học phần Quy trình thiết bị trong công nghệ thực phẩm 2Đề cương chi tiết học phần học phần Quy trình thiết bị trong công nghệ thực phẩm 2

    1. Tên học phần: Quy trình thiết bị trong công nghệ thực phẩm 2 - Mã số học phần: PET222 - Số tín chỉ: 02 - Tính chất của học phần: Bắt buộc - Học phần thay thế, tương đương: Không - Ngành (chuyên ngành) đào tạo: Công nghệ Thực phẩm, Công nghệ sau thu hoạch 2. Phân bổ thời gian học tập: - Số tiết học lý thuyết trên lớp: 24 tiết - Số...

    doc8 trang | Chia sẻ: thanhle95 | Ngày: 08/07/2021 | Lượt xem: 474 | Lượt tải: 0