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Showing results 4754 to 4773 of 59765
  • document(15).pdf.jpg
  • Article


  • Authors: Le, Lan Phuong; Nguyen, Thi Nga; Trinh, Hong Thai (2017)

  • Breast cancer is the most common cancer and the leading cause of cancer death among women worldwide. Many studies have shown that tumor suppressor gene alterations are associated with types of cancer, including breast cancer. –C160A alteration in the promoter region of the CDH1 tumor suppressor gene has been found to be associated with increased breast cancer risk worldwide, however, has not been studied in Vietnam. Therefore, we analyzed the –C160A alteration of CDH1 promoter to determine the association with the risk and some pathological features of breast cancer in Vietnam. PCR-RFLP analysis and DNA sequencing were used to determine –C160A alteration in 67 pairs of tissuse sample ...

  • V_L2_01310.pdf.jpg
  • Thesis


  • Authors: Nguyễn, Thị Thu Hiền;  Advisor: Lê, Chí Quế (2008)

  • Đề tài tập trung nghiên cứu những vấn đề của đời sống xã hội (kinh tế, chính trị, văn hóa - xã hội) được phản ánh trong ca dao từ sau năm 1945 đến nay thông qua hai nguồn chính là sách báo đã xuất bản và mạng Internet. Tìm hiểu những phương thức biểu hiện của ca dao Việt Nam hiện đại, sự ảnh hưởng và tiếp thu ca dao truyền thống về cả phương diện nội dung và hình thức và một số nét đổi mới. Từ đó khái quát lên những vấn đề chính trị, kinh tế, văn hóa, xã hội dưới góc độ dư luận xã hội trong ca dao hiện đại. Nêu bật ý nghĩa của dư luận xã hội về các vấn đề thời cuộc trong ca dao từ 1945 đến nay, các mặt tích cực và những hạn chế của nó. Đưa ra một số nhận xét, đánh giá chung về dư luận...

  • V_L2_01310_Noi_dung.pdf.jpg
  • Thesis


  • Authors: Nguyễn, Thị Thu Hiền;  Advisor: Lê, Chí Quế (2008)

  • Đề tài tập trung nghiên cứu những vấn đề của đời sống xã hội (kinh tế, chính trị, văn hóa - xã hội) được phản ánh trong ca dao từ sau năm 1945 đến nay thông qua hai nguồn chính là sách báo đã xuất bản và mạng Internet. Tìm hiểu những phương thức biểu hiện của ca dao Việt Nam hiện đại, sự ảnh hưởng và tiếp thu ca dao truyền thống về cả phương diện nội dung và hình thức và một số nét đổi mới. Từ đó khái quát lên những vấn đề chính trị, kinh tế, văn hóa, xã hội dưới góc độ dư luận xã hội trong ca dao hiện đại. Nêu bật ý nghĩa của dư luận xã hội về các vấn đề thời cuộc trong ca dao từ 1945 đến nay, các mặt tích cực và những hạn chế của nó. Đưa ra một số nhận xét, đánh giá chung về dư luận...

  • Calcination-temperature-dependent-structural-modificat_2018_Journal-of-Scien.pdf.jpg
  • Article


  • Authors: Yogananda, H.S.; Nagabhushana, H.; Naik, Ramachandra; Prashantha, S.C. (2018)

  • MoO3nanoparticles were prepared by a surfactant assisted sonochemical method. Final products were calcined at 180 C, 400 C, and 600 C resulting in thef-orthorhombic,b-monoclinic, and h-hexagonal structures of MoO3,respectively. Variable morphologies were also seen from SEM images. The energy band gap of the samples was estimated to be ~3.60 eV from diffuse reflectance spectra using Kubelka-Munk function. Photoluminescence spectra exhibited a strong emission peak at ~438 nm due to the hexa-coordinated [MoO6] 5þ dz 2e dyztransitions. The results show that the samples can be used as blue light emitting components of white light emitting diodes.

  • Calculate Road Traffic Air Emissions Including Traffic jam Application over Ho Chi Minh City, Vietnam.pdf.jpg
  • Article


  • Authors: Hồ, Quốc Bằng (2014)

  • Road traffic emissions are the main sources of uncertainties in air quality numerical models used to forecast and define abatement strategies. Available models to calculate road traffic emission always require a big effort, money and time. So that in this research we used a model namely EMISENS model for calculation air emission inventories over Ho Chi Minh City (HCMC), Vietnam. However, this model can not calculated air emission inventories in temporal and take into account the traffic jam. The first aim is to improve the calculation method including phenomena of traffic jam and integrated it in the EMISENS model. Then, study scenarios to reduce air pollution caused by road traffic a...

  • 46.pdf.jpg
  • Article


  • Authors: Nguyen, The Lam (2015)

  • This paper will show that the characteristics of Single Electron Transistor (SET) may be calculated. In the model of SET, the electrons are transferred one-by-one through the energy potential barriers by tunneling and a quantum dot is formed between two barriers. By determining the wave functions in the regions, we have calculated the transfer coefficient of SET. The other characteristics of SET as, currents through the Source and Drain regions, electron density in the quantum dots and I-V characters are also calculated and investigated.

  • 102.pdf.jpg
  • Article


  • Authors: Nguyen, Van Hung; Nguyen, Cong Toan; Hoang, Thi Khanh Giang (2010)

  • Analytical expressions for the ratio of the root mean square fluctuation in atomic positions on the equilibrium lattice positions and the nearest neighbor distance and the mean melting cgryes of bcc binary alloys haye been derived. This melting curve provides information on Lindemann's melting temperatures of binary alloys with respect to any proportion of constituent elements and on their euctectic points. Numerical results for some bcc binary alloys are found to be in agreement with experiment.

  • 115.pdf.jpg
  • Article


  • Authors: Nguyen, Van Hung; Nguyen, Cong Toan; Nguyen, Bao Trung; Ngo, Hoang Giang (2008)

  • Analytical expressions for the Morse potential parameters of diamond crystals have been derived. They contain the energy of sublimation, the compressibility and the lattice constant. Numerical calculations have been carried out for Si and Sn, and the result reflect fundamental calcultion of the anharmonic correlated effective potential parameters have been used for calculation of the anharmonic correlated effective potentials of these crystals in XAFS theory showing clearly anharmonic effects.

  • 237.pdf.jpg
  • Article


  • Authors: Nguyen, Van Hung; Dao, Xuan Viet (2003)

  • A new procedure for calculation of the Morse potential parameters of hexagonal closed packed (hcp) crystals has been developed using the energy of sublimation, the compressibility and the lattice constant. The derived equation of state and the elastic constants computed using the obtained Morse parameters agree with the experimental ones. This shows that the Morse dunction can be applied validly to the problems involving any type of deformation and atomic interaction in the hcp crystals.

  • 3.pdf.jpg
  • Article


  • Authors: Nguyen, Van Hung; Trinh, Thi Hue; Nguyen, Ba Duc (2015)

  • In this work, Morse potential parameters of bcc crystals have been calculated based on the calculation of volume per atom and atomic number in each elementary cell, as well as the energy of sublimation, the compressibility and the lattice constant. They are used for studying the anharmonic interatomic effective potential, local force constant in XAFS (X-ray Absorption Fine Structure) theory. Numerical results for Fe, W and Mo are found to be in good agreement with experiment and with those of other theories.

  • 49.pdf.jpg
  • Article


  • Authors: Nguyen, Van Hung; Trinh, Thi Hue; Nguyen, Ba Duc (2015)

  • In this work, Morse potential parameters of bcc crystals have been calculated based on the calculation of volume per atom and atomic number in each elementary cell, as well as the energy of sublimation, the compressibility and the lattice constant. They are used for studying the anharmonic interatomic effective potential, local force constant in XAFS (X-ray Absorption Fine Structure) theory. Numerical results for Fe, W and Mo are found to be in good agreement with experiment and with those of other theories.

  • 4236-97-8192-1-10-20180103.pdf.jpg
  • Article


  • Authors: Cao, Thi Vi Ba; Tran, Hai Hung; Doan, Minh Quang; Nguyen, Quang Bau (2017)

  • The Ettingshausen coefficient (EC) in a Rectangular quantum wire with an infinite potential (RQWIP)in the presence of an Electromagnetic wave (EMW) is calculated by using a quantum kinetic equation for electrons. Considering the case of the electron - optical phonon interaction, we have found the expressions of the kinetic tensors . From the kinetic tensors, we have also obtained the analytical expression of the EC in the RQWIP in the presence of EMW as function of the frequency and the intensity of the EMW, of the temperature of system, of the magnetic field and of the characteristic parameters of RQWIP. The theoretical results for the EC are numerically evaluated, plotted and disc...

  • 88.pdf.jpg
  • Article


  • Authors: Bui, Dinh Hoi; Pham, Thi Trang; Nguyen, Quang Bau (2013)

  • We consider a model of the Hall effect when a doped semiconductor superlattice (DSSL) with a periodical superlattice potential in the z-direction is subjected to a crossed dc electric field (EF) and magnetic field , in the presence of a laser radiation characterized by electric field (where and are the amplitude and the frequency of the laser radiation, respectively). By using the quantum kinetic equation for electrons and considering the electron - optical phonon interaction, we obtain analytical expressions for the Hall conductivity as well as the Hall coefficient (HC) with a dependence on B, , , , the temperature T of the system and the characteristic parameters of DSSL. The an...

Browsing by Title

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 4754 to 4773 of 59765
  • document(15).pdf.jpg
  • Article


  • Authors: Le, Lan Phuong; Nguyen, Thi Nga; Trinh, Hong Thai (2017)

  • Breast cancer is the most common cancer and the leading cause of cancer death among women worldwide. Many studies have shown that tumor suppressor gene alterations are associated with types of cancer, including breast cancer. –C160A alteration in the promoter region of the CDH1 tumor suppressor gene has been found to be associated with increased breast cancer risk worldwide, however, has not been studied in Vietnam. Therefore, we analyzed the –C160A alteration of CDH1 promoter to determine the association with the risk and some pathological features of breast cancer in Vietnam. PCR-RFLP analysis and DNA sequencing were used to determine –C160A alteration in 67 pairs of tissuse sample ...

  • V_L2_01310.pdf.jpg
  • Thesis


  • Authors: Nguyễn, Thị Thu Hiền;  Advisor: Lê, Chí Quế (2008)

  • Đề tài tập trung nghiên cứu những vấn đề của đời sống xã hội (kinh tế, chính trị, văn hóa - xã hội) được phản ánh trong ca dao từ sau năm 1945 đến nay thông qua hai nguồn chính là sách báo đã xuất bản và mạng Internet. Tìm hiểu những phương thức biểu hiện của ca dao Việt Nam hiện đại, sự ảnh hưởng và tiếp thu ca dao truyền thống về cả phương diện nội dung và hình thức và một số nét đổi mới. Từ đó khái quát lên những vấn đề chính trị, kinh tế, văn hóa, xã hội dưới góc độ dư luận xã hội trong ca dao hiện đại. Nêu bật ý nghĩa của dư luận xã hội về các vấn đề thời cuộc trong ca dao từ 1945 đến nay, các mặt tích cực và những hạn chế của nó. Đưa ra một số nhận xét, đánh giá chung về dư luận...

  • V_L2_01310_Noi_dung.pdf.jpg
  • Thesis


  • Authors: Nguyễn, Thị Thu Hiền;  Advisor: Lê, Chí Quế (2008)

  • Đề tài tập trung nghiên cứu những vấn đề của đời sống xã hội (kinh tế, chính trị, văn hóa - xã hội) được phản ánh trong ca dao từ sau năm 1945 đến nay thông qua hai nguồn chính là sách báo đã xuất bản và mạng Internet. Tìm hiểu những phương thức biểu hiện của ca dao Việt Nam hiện đại, sự ảnh hưởng và tiếp thu ca dao truyền thống về cả phương diện nội dung và hình thức và một số nét đổi mới. Từ đó khái quát lên những vấn đề chính trị, kinh tế, văn hóa, xã hội dưới góc độ dư luận xã hội trong ca dao hiện đại. Nêu bật ý nghĩa của dư luận xã hội về các vấn đề thời cuộc trong ca dao từ 1945 đến nay, các mặt tích cực và những hạn chế của nó. Đưa ra một số nhận xét, đánh giá chung về dư luận...

  • Calcination-temperature-dependent-structural-modificat_2018_Journal-of-Scien.pdf.jpg
  • Article


  • Authors: Yogananda, H.S.; Nagabhushana, H.; Naik, Ramachandra; Prashantha, S.C. (2018)

  • MoO3nanoparticles were prepared by a surfactant assisted sonochemical method. Final products were calcined at 180 C, 400 C, and 600 C resulting in thef-orthorhombic,b-monoclinic, and h-hexagonal structures of MoO3,respectively. Variable morphologies were also seen from SEM images. The energy band gap of the samples was estimated to be ~3.60 eV from diffuse reflectance spectra using Kubelka-Munk function. Photoluminescence spectra exhibited a strong emission peak at ~438 nm due to the hexa-coordinated [MoO6] 5þ dz 2e dyztransitions. The results show that the samples can be used as blue light emitting components of white light emitting diodes.

  • Calculate Road Traffic Air Emissions Including Traffic jam Application over Ho Chi Minh City, Vietnam.pdf.jpg
  • Article


  • Authors: Hồ, Quốc Bằng (2014)

  • Road traffic emissions are the main sources of uncertainties in air quality numerical models used to forecast and define abatement strategies. Available models to calculate road traffic emission always require a big effort, money and time. So that in this research we used a model namely EMISENS model for calculation air emission inventories over Ho Chi Minh City (HCMC), Vietnam. However, this model can not calculated air emission inventories in temporal and take into account the traffic jam. The first aim is to improve the calculation method including phenomena of traffic jam and integrated it in the EMISENS model. Then, study scenarios to reduce air pollution caused by road traffic a...

  • 46.pdf.jpg
  • Article


  • Authors: Nguyen, The Lam (2015)

  • This paper will show that the characteristics of Single Electron Transistor (SET) may be calculated. In the model of SET, the electrons are transferred one-by-one through the energy potential barriers by tunneling and a quantum dot is formed between two barriers. By determining the wave functions in the regions, we have calculated the transfer coefficient of SET. The other characteristics of SET as, currents through the Source and Drain regions, electron density in the quantum dots and I-V characters are also calculated and investigated.

  • 102.pdf.jpg
  • Article


  • Authors: Nguyen, Van Hung; Nguyen, Cong Toan; Hoang, Thi Khanh Giang (2010)

  • Analytical expressions for the ratio of the root mean square fluctuation in atomic positions on the equilibrium lattice positions and the nearest neighbor distance and the mean melting cgryes of bcc binary alloys haye been derived. This melting curve provides information on Lindemann's melting temperatures of binary alloys with respect to any proportion of constituent elements and on their euctectic points. Numerical results for some bcc binary alloys are found to be in agreement with experiment.

  • 115.pdf.jpg
  • Article


  • Authors: Nguyen, Van Hung; Nguyen, Cong Toan; Nguyen, Bao Trung; Ngo, Hoang Giang (2008)

  • Analytical expressions for the Morse potential parameters of diamond crystals have been derived. They contain the energy of sublimation, the compressibility and the lattice constant. Numerical calculations have been carried out for Si and Sn, and the result reflect fundamental calcultion of the anharmonic correlated effective potential parameters have been used for calculation of the anharmonic correlated effective potentials of these crystals in XAFS theory showing clearly anharmonic effects.

  • 237.pdf.jpg
  • Article


  • Authors: Nguyen, Van Hung; Dao, Xuan Viet (2003)

  • A new procedure for calculation of the Morse potential parameters of hexagonal closed packed (hcp) crystals has been developed using the energy of sublimation, the compressibility and the lattice constant. The derived equation of state and the elastic constants computed using the obtained Morse parameters agree with the experimental ones. This shows that the Morse dunction can be applied validly to the problems involving any type of deformation and atomic interaction in the hcp crystals.

  • 3.pdf.jpg
  • Article


  • Authors: Nguyen, Van Hung; Trinh, Thi Hue; Nguyen, Ba Duc (2015)

  • In this work, Morse potential parameters of bcc crystals have been calculated based on the calculation of volume per atom and atomic number in each elementary cell, as well as the energy of sublimation, the compressibility and the lattice constant. They are used for studying the anharmonic interatomic effective potential, local force constant in XAFS (X-ray Absorption Fine Structure) theory. Numerical results for Fe, W and Mo are found to be in good agreement with experiment and with those of other theories.

  • 49.pdf.jpg
  • Article


  • Authors: Nguyen, Van Hung; Trinh, Thi Hue; Nguyen, Ba Duc (2015)

  • In this work, Morse potential parameters of bcc crystals have been calculated based on the calculation of volume per atom and atomic number in each elementary cell, as well as the energy of sublimation, the compressibility and the lattice constant. They are used for studying the anharmonic interatomic effective potential, local force constant in XAFS (X-ray Absorption Fine Structure) theory. Numerical results for Fe, W and Mo are found to be in good agreement with experiment and with those of other theories.

  • 4236-97-8192-1-10-20180103.pdf.jpg
  • Article


  • Authors: Cao, Thi Vi Ba; Tran, Hai Hung; Doan, Minh Quang; Nguyen, Quang Bau (2017)

  • The Ettingshausen coefficient (EC) in a Rectangular quantum wire with an infinite potential (RQWIP)in the presence of an Electromagnetic wave (EMW) is calculated by using a quantum kinetic equation for electrons. Considering the case of the electron - optical phonon interaction, we have found the expressions of the kinetic tensors . From the kinetic tensors, we have also obtained the analytical expression of the EC in the RQWIP in the presence of EMW as function of the frequency and the intensity of the EMW, of the temperature of system, of the magnetic field and of the characteristic parameters of RQWIP. The theoretical results for the EC are numerically evaluated, plotted and disc...

  • 88.pdf.jpg
  • Article


  • Authors: Bui, Dinh Hoi; Pham, Thi Trang; Nguyen, Quang Bau (2013)

  • We consider a model of the Hall effect when a doped semiconductor superlattice (DSSL) with a periodical superlattice potential in the z-direction is subjected to a crossed dc electric field (EF) and magnetic field , in the presence of a laser radiation characterized by electric field (where and are the amplitude and the frequency of the laser radiation, respectively). By using the quantum kinetic equation for electrons and considering the electron - optical phonon interaction, we obtain analytical expressions for the Hall conductivity as well as the Hall coefficient (HC) with a dependence on B, , , , the temperature T of the system and the characteristic parameters of DSSL. The an...