Browsing by Author Le, Tuan Anh

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  • 8. Bui Thanh Tung.QT.pdf.jpg
  • Article


  • Authors: Nguyen, Thanh Hai; Le, Tuan Anh; Duong, Thi Ly Huong; Nguyen, Huu Tung; Vu, Duc Loi; Dang, Thu Kim; Bui, Thanh Tung (2015)

  • Objective: To investigated the protective potential of ethanol extracts of Scutellaria baicalensis (S. baicalensis) against lipopolysaccharide (LPS)-induced liver injury. Methods:Dried roots of S. baicalensiswere extracted with ethanol and concentrated to yield a dry residue. Mice were administered 200 mg/kg of the ethanol extracts orally once daily for one week. Animals were subsequently administered a single dose of LPS(5 mg/kg of body weight, intraperitoneal injection). Both protein and mRNAlevels of cytokines, such as tumor necrosis factor alpha, interleukin-1β, and interleukin-6 in liver tissues were evaluated by ELISA assay and quantitative PCR. Cyclooxygenase-2, ind...

  • 80.pdf.jpg
  • Article


  • Authors: Bui, Van Loat; Le, Tuan Anh; Nguyen, Cong Tam; Pham, Duc Khue; Bui, Minh Hue (2013)

  • During the last years, as the international illicit traffic of radioactive/ fissionable materials have increased, it became important to be able to apply fast reliable methods for the uranium enrichment determination. In order to determine the uranium enrichment the activity ratios of 234U/235U and 238U/235Uwas measured. Uranium isotopic abundance can be determined by alpha spectrometry and mass- spectrometry methods, which are destructive methods. In this work the non-destructive gamma – spectroscopic method for uranium enrichment is presented. The method is applicable to material of any physical form and geometrical shape, and does not require the use of reference materials nor the ...

  • 59.pdf.jpg
  • Article


  • Authors: Bui, Van Loat; Le, Tuan Anh; Dong, Van Thanh; Nguyen, The Nghia; Pham, Duc Khue (2012)

  • Nowadays, semiconductor detectors, in general, and high purity gemanium detectors (HPGe) in particular are widely used in various fields of experimental nuclear physics. In gamma ray experiments, energy resolution and the efficiency are very important characteristics of detectors. In this paper, the gamma standard sources such as 137Cs, 57Co, 60Co, 54Mn, 133Ba, and 109Cd were used to study the characteristics of the BEGe 3050 detector. The methods of determining the absolute photo- peak efficiency and the dependence of the energy resolution on γ-ray energy are presented.

  • 51.pdf.jpg
  • Article


  • Authors: Bui, Van Loat; Le, Tuan Anh; Nguyen, Van Quan; Dinh, Van Thin; Nguyen, Cong Tam (2012)

  • In this work the non-destructive gamma - spectroscopic method for determination of uranium enrichment is presented. The method is applicable to material of any physical form and geometrical shape, and does not require the use of reference materials or the use of efficiency calibrated geometry. The X Rays and gamma rays below 100 keVfrom 235U were used to determine their relative detection efficiency internally. The activity ratios of 234U/235U and U238/U235in studied sample were calculated based on the measurents of the count rate of 53.2keV (0.123%) gamma ray of 234U and 92.6 keV (5.16%) of 234Th, a daughter of 238U. As a test of this method, a highly enriched uraniumsample was meas...

  • 125.pdf.jpg
  • Article


  • Authors: Bui, Van Loat; Nguyen, Van Quan; Le, Tuan Anh; Tran, The Anh; Nguyen, The Nghia; Nguyen, Van Hung (2009)

  • Radioactive sources which used to study were the standardized radioactive of common monoenergetic radionuclide Cs137 and standardized multigamma Co60, Ba133, Eu152. Determination of the absolute efficiency curve and energy resolution as a function of energy of GEM40P4 HPGe spectrometer are presented in this paper.

  • document(13).pdf.jpg
  • Article


  • Authors: Nguyen, Thi Thanh Phuong; Tran, Thi Thanh Van; Le, Tuan Anh; Truong, Hong HIeu; Tran, Thach Van; ... (2017)

  • Having been synthesized successfully heterocyclic system, namely 2-aryl-N-methyl-4,8a-di(α-furyl)perhydro[1,2,3]dioxaborinino-[5,4-c]pyridine contains two piperidine and dioxaborinine rings. This new heterocyclic system was prepared from the reaction of N-methyl-3-(α-hydroxyfuryl)-4-(α-furyl)-γ-piperidol and some derivatives of arylboronic acid. The structure of new substances was confirmed by physical-chemical method including 1Н NMR, IR, MS. Futhermore, PASS online Program investigated that di(α-furyl)perhydro[1,2,3]dioxaborinino-[5,4-c]pyridine derivatives have high potential of bioactivities such as dermatology, spasmology, anticoagulant and antipsoriatic agent … which promote us ...

Browsing by Author Le, Tuan Anh

Jump to: 0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
or enter first few letters:  
Showing results 1 to 6 of 6
  • 8. Bui Thanh Tung.QT.pdf.jpg
  • Article


  • Authors: Nguyen, Thanh Hai; Le, Tuan Anh; Duong, Thi Ly Huong; Nguyen, Huu Tung; Vu, Duc Loi; Dang, Thu Kim; Bui, Thanh Tung (2015)

  • Objective: To investigated the protective potential of ethanol extracts of Scutellaria baicalensis (S. baicalensis) against lipopolysaccharide (LPS)-induced liver injury. Methods:Dried roots of S. baicalensiswere extracted with ethanol and concentrated to yield a dry residue. Mice were administered 200 mg/kg of the ethanol extracts orally once daily for one week. Animals were subsequently administered a single dose of LPS(5 mg/kg of body weight, intraperitoneal injection). Both protein and mRNAlevels of cytokines, such as tumor necrosis factor alpha, interleukin-1β, and interleukin-6 in liver tissues were evaluated by ELISA assay and quantitative PCR. Cyclooxygenase-2, ind...

  • 80.pdf.jpg
  • Article


  • Authors: Bui, Van Loat; Le, Tuan Anh; Nguyen, Cong Tam; Pham, Duc Khue; Bui, Minh Hue (2013)

  • During the last years, as the international illicit traffic of radioactive/ fissionable materials have increased, it became important to be able to apply fast reliable methods for the uranium enrichment determination. In order to determine the uranium enrichment the activity ratios of 234U/235U and 238U/235Uwas measured. Uranium isotopic abundance can be determined by alpha spectrometry and mass- spectrometry methods, which are destructive methods. In this work the non-destructive gamma – spectroscopic method for uranium enrichment is presented. The method is applicable to material of any physical form and geometrical shape, and does not require the use of reference materials nor the ...

  • 59.pdf.jpg
  • Article


  • Authors: Bui, Van Loat; Le, Tuan Anh; Dong, Van Thanh; Nguyen, The Nghia; Pham, Duc Khue (2012)

  • Nowadays, semiconductor detectors, in general, and high purity gemanium detectors (HPGe) in particular are widely used in various fields of experimental nuclear physics. In gamma ray experiments, energy resolution and the efficiency are very important characteristics of detectors. In this paper, the gamma standard sources such as 137Cs, 57Co, 60Co, 54Mn, 133Ba, and 109Cd were used to study the characteristics of the BEGe 3050 detector. The methods of determining the absolute photo- peak efficiency and the dependence of the energy resolution on γ-ray energy are presented.

  • 51.pdf.jpg
  • Article


  • Authors: Bui, Van Loat; Le, Tuan Anh; Nguyen, Van Quan; Dinh, Van Thin; Nguyen, Cong Tam (2012)

  • In this work the non-destructive gamma - spectroscopic method for determination of uranium enrichment is presented. The method is applicable to material of any physical form and geometrical shape, and does not require the use of reference materials or the use of efficiency calibrated geometry. The X Rays and gamma rays below 100 keVfrom 235U were used to determine their relative detection efficiency internally. The activity ratios of 234U/235U and U238/U235in studied sample were calculated based on the measurents of the count rate of 53.2keV (0.123%) gamma ray of 234U and 92.6 keV (5.16%) of 234Th, a daughter of 238U. As a test of this method, a highly enriched uraniumsample was meas...

  • 125.pdf.jpg
  • Article


  • Authors: Bui, Van Loat; Nguyen, Van Quan; Le, Tuan Anh; Tran, The Anh; Nguyen, The Nghia; Nguyen, Van Hung (2009)

  • Radioactive sources which used to study were the standardized radioactive of common monoenergetic radionuclide Cs137 and standardized multigamma Co60, Ba133, Eu152. Determination of the absolute efficiency curve and energy resolution as a function of energy of GEM40P4 HPGe spectrometer are presented in this paper.

  • document(13).pdf.jpg
  • Article


  • Authors: Nguyen, Thi Thanh Phuong; Tran, Thi Thanh Van; Le, Tuan Anh; Truong, Hong HIeu; Tran, Thach Van; ... (2017)

  • Having been synthesized successfully heterocyclic system, namely 2-aryl-N-methyl-4,8a-di(α-furyl)perhydro[1,2,3]dioxaborinino-[5,4-c]pyridine contains two piperidine and dioxaborinine rings. This new heterocyclic system was prepared from the reaction of N-methyl-3-(α-hydroxyfuryl)-4-(α-furyl)-γ-piperidol and some derivatives of arylboronic acid. The structure of new substances was confirmed by physical-chemical method including 1Н NMR, IR, MS. Futhermore, PASS online Program investigated that di(α-furyl)perhydro[1,2,3]dioxaborinino-[5,4-c]pyridine derivatives have high potential of bioactivities such as dermatology, spasmology, anticoagulant and antipsoriatic agent … which promote us ...