• Structural, optical and electrical properties of undoped and al doped-ZnO films for use in photovoltaic devicesStructural, optical and electrical properties of undoped and al doped-ZnO films for use in photovoltaic devices

    Abstract. ZnO films are deposited on glass substrates using a sol-gel spin coating method. To investigate the influence of Al doping concentration on structural, optical and electrical characteristics of films, Al doping concentrations are varied from 0% to 5%. The surface morphology, structure and optical transmittance characteristics of the fi...

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  • Down regulation of zinc finger protein 280D (ZFP-280D)Down regulation of zinc finger protein 280D (ZFP-280D)

    Abstract. This study demonstrated that high transcript expression levels of ZFP-280D in melanocytes and in benign tumors of 304 Ret mice, a transgenic mouse line in which a systemic skin melanosis, benign melanocytic tumors and malignant melanoma which develop stepwise were inhibited in melanoma cell lines (human and murine) and in the malignan...

    pdf7 trang | Chia sẻ: thanhle95 | Ngày: 07/07/2021 | Lượt xem: 578 | Lượt tải: 0

  • Fish species composition in the Red river and its tributaries in the Yen Bai province, VietnamFish species composition in the Red river and its tributaries in the Yen Bai province, Vietnam

    Abstract. The fish community of the Red River and its four tributaries (Ngoi Hit, Ngoi Thia, Ngoi Lao and an unnamed Ngoi) was elucidated from October 2009 to August 2010. During the period of study, 110 species belonging to 69 genera, 20 families and 7 orders were identified. Previous works have identified 120 species, 74 genera, 20 families a...

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  • Fish species composition and their distribution of the Pho Day river, Northern VietnamFish species composition and their distribution of the Pho Day river, Northern Vietnam

    Abstract. In six surveys conducted at 11 locations along the Pho Day River, Northern Vietnam, from April 2006 to April 2007, 1203 fish specimens were collected and analyzed. 87 species of fish of 66 genera, 20 families and 6 orders were found. No survey of Pho Day fish fauna had previously been conducted. Perciformes is the most diverse with 7 ...

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  • Colormetric determination of total chromium content in water, rice and vegetable samples by 1,5-diphenylcarbazideColormetric determination of total chromium content in water, rice and vegetable samples by 1,5-diphenylcarbazide

    Abstract. A colorimetric determination the total chromium content based on DPC reagent was established in detail. All operations were done under the optimal conditions of pH = 1.65, a ratio of nDPC/nCr(VI) = 2.18 (by mol) and use of a calibration plot for the determination of total chromium established as A = (0.8324 ± 0.00901).CCr + (0.0086 ± ...

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  • Research on the production of candied orange slicesResearch on the production of candied orange slices

    Processing candied orange slices is one of the basic measures to help prolong the shelf life of products compared to raw oranges. The purpose of this study is to create candied orange slice products from chanh orange with good nutritional and organoleptic value, contributing to diversifying jam products in the market and increasing income for ...

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  • Study on factors affecting the processing of tilapia chopped fishStudy on factors affecting the processing of tilapia chopped fish

    The objective of this study was to determine the effects of some factors including food additive supplementation, grinding time, and cooking time on the sensory quality of tilapia grilled chopped fish. Fishes were decapitated, gutted, filleted manually, washed, and mixed with different food additive supplementation (flour, cornstarch, sodium t...

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  • Determining the prevalence of Helicobacter pylori infection by molecular identification of 16s rRNA in gastric patients in Hai Duong provincial general hospitalDetermining the prevalence of Helicobacter pylori infection by molecular identification of 16s rRNA in gastric patients in Hai Duong provincial general hospital

    Abstract. In this study, 180 gastric biopsies were taken from patients of Hai Duong Provincial General Hospital who had come to the hospital to be treated for gastritis during the period January 2015 to July 2015. All of the subjects were i) 18-80 years old; ii) they had chronic gastritis, a stomach ulcer or gastric cancer; iii) they did not use...

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  • Preparation of TiO2 nanocrystals in anatase and rutile phasePreparation of TiO2 nanocrystals in anatase and rutile phase

    Abstract. TiO2 nanocrystals were prepared by pyrolysis of titanium tetrachloride (TiCl4) as precursor in an HCl aqueous solution at 80 ºC. The morphology and crystal structure of the resulting materials were characterized using a transmission electron microscope (TEM), X-Ray diffraction (XRD) and Raman spectroscopy. The concentration of the HCl...

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  • Synthesis of CdSe/CdS AND CdSe/CdS/SiO2 nanoparticles VIA wet chemical methodSynthesis of CdSe/CdS AND CdSe/CdS/SiO2 nanoparticles VIA wet chemical method

    Abstract. This work presents the synthesis of CdSe/CdS and CdSe/CdS/SiO2 nanoparticles via wet chemical method for the purpose of preparing fluorescence SiO2 nanoparticles. The CdSe/CdS nanoparticles have been synthesized directly in an aqueous solution using citrate as the surfactant agent. The CdSe/CdS nanoparticles are then coated by a silic...

    pdf6 trang | Chia sẻ: thanhle95 | Ngày: 07/07/2021 | Lượt xem: 592 | Lượt tải: 0