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Search Results: 1 - 10 of 13959 matches for " Do Quang Ha "
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Assessment of Radiation Dose Caused by Radioactive Gaseous Effluent Released from Nuclear Power Plant Ninh Thuan 1 under Scenario of Normal Working Conditions  [PDF]
Nguyen Tuan Khai, Do Xuan Anh, Le Dinh Cuong, Duong Duc Thang, Vuong Thu Bac, Nguyen Thi Thu Ha, Nguyen Quang Long, Trinh Van Giap, Nguyen Hao Quang
World Journal of Nuclear Science and Technology (WJNST) , 2015, DOI: 10.4236/wjnst.2015.53018
Abstract: Based on guides RG 1.109, RG 1.111 published by United States Nuclear Regulatory Commission (USNRC), our research concentrates in assessing radiation doses caused by radioactive substances released from the nuclear power plant (NPP) Ninh Thuan 1 under the scenario of normal operation using software package NRCDose72 provided by the USNRC. The database including the released radioactive nuclides, meteorology, terrain, population and agricultural production activities have been collected and processed to build the input data for the model calculation. The wind rose distribution obtained from the meteorological data in a five-year period from 2009-2013 showed that the radioactive nuclides released to environment spread in two main wind directions which are North East and South West. The X/Q (s/m3) and D/Q (s/m2) qualities which are, respectively, the ratio of activity concentration to release rate and that of deposition density of radioactive nuclides to release rate were calculated within an area of 80 km radius from the NPP site using XOQDOQ. Population doses were calculated using GASPAR. The XOQDOQ and GASPAR are two specific softwares in NRCDose72 package.
Further properties of Gaussian Reproducing Kernel Hilbert Spaces
Minh Ha Quang
Statistics , 2012,
Abstract: We generalize the orthonormal basis for the Gaussian RKHS described in \cite{MinhGaussian2010} to an infinite, continuously parametrized, family of orthonormal bases, along with some implications. The proofs are direct generalizations of those in \cite{MinhGaussian2010}.
Protective and Enhancing HLA Alleles, HLA-DRB1*0901 and HLA-A*24, for Severe Forms of Dengue Virus Infection, Dengue Hemorrhagic Fever and Dengue Shock Syndrome
Nguyen Thi Phuong Lan,Mihoko Kikuchi,Vu Thi Que Huong,Do Quang Ha,Tran Thi Thuy,Vo Dinh Tham,Ha Manh Tuan,Vo Van Tuong,Cao Thi Phi Nga,Tran Van Dat,Toshifumi Oyama,Kouichi Morita,Michio Yasunami,Kenji Hirayama
PLOS Neglected Tropical Diseases , 2008, DOI: 10.1371/journal.pntd.0000304
Abstract: Background Dengue virus (DV) infection is one of the most important mosquito-borne diseases in the tropics. Recently, the severe forms, dengue hemorrhagic fever (DHF) and dengue shock syndrome (DSS), have become the leading cause of death among children in Southern Vietnam. Protective and/or pathogenic T cell immunity is supposed to be important in the pathogenesis of DHF and DSS. Methodology/Principal Findings To identify HLA alleles controlling T cell immunity against dengue virus (DV), we performed a hospital-based case control study at Children's Hospital No.2, Ho Chi Minh City (HCMC), and Vinh Long Province Hospital (VL) in Southern Vietnam from 2002 to 2005. A total of 211 and 418 patients with DHF and DSS, respectively, diagnosed according to the World Health Organization (WHO) criteria, were analyzed for their characteristic HLA-A, -B and -DRB1 alleles. Four hundred fifty healthy children (250 from HCMC and 200 from VL) of the same Kinh ethnicity were also analyzed as population background. In HLA class I, frequency of the HLA-A*24 showed increased tendency in both DHF and DSS patients, which reproduced a previous study. The frequency of A*24 with histidine at codon 70 (A*2402/03/10), based on main anchor binding site specificity analysis in DSS and DHF patients, was significantly higher than that in the population background groups (HCMC 02-03 DSS: OR = 1.89, P = 0.008, DHF: OR = 1.75, P = 0.033; VL 02-03 DSS: OR = 1.70, P = 0.03, DHF: OR = 1.46, P = 0.38; VL 04-05 DSS: OR = 2.09, P = 0.0075, DHF: OR = 2.02, P = 0.038). In HLA class II, the HLA-DRB1*0901 frequency was significantly decreased in secondary infection of DSS in VL 04-05 (OR = 0.35, P = 0.0025, Pc = 0.03). Moreover, the frequency of HLA-DRB1*0901 in particular was significantly decreased in DSS when compared with DHF in DEN-2 infection (P = 0.02). Conclusion This study improves our understanding of the risk of HLA-class I for severe outcome of DV infection in the light of peptide anchor binding site and provides novel evidence that HLA-class II may control disease severity (DHF to DSS) in DV infection.
Preparation and Biological Properties of Platinum(II) Complex-Loaded Copolymer PLA-TPGS
Ha Phuong Thu,Phan Thi Hong Tuyet,Mai Thi Thu Trang,Nguyen Hoai Nam,Truong Thi Nhu Hieu,Le Quang Duong,Tran Thi Nhu Hang,Tran Thi Hong Ha,Do Huu Nghi,Le Huu Cuong,Le Mai Huong
Journal of Nanomaterials , 2013, DOI: 10.1155/2013/768628
Abstract: A new nanodrug system containing bis(menthone thiosemicarbazonato) Platinum(II) complex (Pt-thiomen) encapsulated with the block copolymers polylactide-d-α-tocopheryl polyethylene glycol 1000 succinate (PLA-TPGS) was prepared by a modified solvent extraction/evaporation technique. The characteristics of the nanoparticles including surface morphology, size distribution, structure, and biological activities such as antimicrobial and cytotoxic activities were in vitro investigated. The spherical nanoparticles were around 50?nm in size with core-shell structure and narrow-size distribution. The encapsulated Pt-thiomen can avoid interaction with proteins in the blood plasma. The inhibitory activity of Pt-thiomen-loaded PLA-TPGS nanoparticles on the growth of some bacteria, fungi, and Hep-G2 cells suggests a possibility of developing PLA-TPGS-Pt-thiomen nanoparticles as one of the potential chemotherapeutic agents. 1. Introduction Platinum(II) complexes, one of the most potent anticancer drugs, have been used for treatment against a variety of human cancers [1, 2]. They are effective cytotoxic agents in the treatment of epithelial malignancies such as lung, head and neck, ovarian, bladder, and testicular cancer [3]. However, their clinical applications is restricted because almost all platinum in the blood plasma are often bound by protein after intravenous injection [4]. The binding of Pt(II) complexes with proteins reduces the urinary excretion of platinum and causes the deposition of Platinum in tissues [5]. The action with proteins causes many side effects including renal and auditory toxicity, nausea, and vomiting [6–8]. The development of drug delivery systems in the last several decades has provided a variety of methods including the incorporation of drugs into liposomes, lipid emulsions, and polymeric micelles to reduce adverse effects, to increase their solubility, and to prolong circulation time as well [9–12]. More recently, a promising approach which has attracted much attention of researchers is the encapsulation of platinum-based anticancer drugs in sterically stabilized polymeric micelles. This strategy has succeeded in reducing toxicity and improving efficacy of encapsulated platinum complex due to an excellent stability in plasma and a much longer circulation time as compared to free Pt(II) complexes [13–16]. The in vitro test on antimicrobial activity of the series of platinum(II) complexes by the macrodilution method was also reported by Utku et al. [17]. Some synthesized complexes might be taken into consideration as promising antifungal
Regards croisés sur l’acte de requête
Do Quang Viet
Synergies Pays Riverains du Mékong , 2010,
Abstract: Le présent article est un résumé succinct de notre étude de DEA réalisée sous la direction du Professeur B. Gardin (2000, Université de Rouen), par lequel nous voulions simplement signaler à titre d’exemple certaines différences de fonctionnement de l’acte de requête en vue d’une mise en garde des chocs ou des conflits culturels, les blocages communicatifs éventuels et d’une meilleure compréhension mutuelle entre Fran ais et Vietnamiens dans leur communication inter-culturelle franco-vietnamienne.
On equivariant characteristic ideals of real classes
Thong Nguyen Quang Do
Mathematics , 2013,
Abstract: Let $p$ be an odd prime, $F/{\Bbb Q}$ an abelian totally real number field, $F_\infty/F$ its cyclotomic ${\Bbb Z}_p$-extension, $G_\infty = Gal (F_\infty / {\Bbb Q}),$ ${\Bbb A} = {\Bbb Z}_p [[G_\infty]].$ We give an explicit description of the equivariant characteristic ideal of $H^2_{Iw} (F_\infty, {\Bbb Z}_p(m))$ over ${\Bbb A}$ for all odd $m \in {\Bbb Z}$ by applying M. Witte's formulation of an equivariant main conjecture (or "limit theorem") due to Burns and Greither. This could shed some light on Greenberg's conjecture on the vanishing of the $\lambda$-invariant of $F_\infty/F.$
Development of Multiphoton Ionization Technique for Detection of Polycyclic Aromatic Hydrocarbon (PAH) in Solution  [PDF]
Hoa Do Quang, Duong Vu, Nghia Nguyen Trong, Totaro Imasaka
Open Journal of Applied Sciences (OJAppS) , 2015, DOI: 10.4236/ojapps.2015.510058
Abstract: A simple low-cost system for detection of polycyclic aromatic hydrocarbon (PAH) in solution based on multiphoton ionization configuration is designed using a circulating ionization cell of 0.1 × 2 × 5 mm dimension with quartz optical window. Fourth harmonic emission of Nd:YAG laser (266 nm, 6 ns, 10 Hz, and 2 mJ) and second harmonic generation of distributed feedback dye laser (278 - 286 nm, 20 ps, 10 Hz, and 300 μJ) were used as the ionization source. A high voltage of 800 V was applied to separate the ions after ionization. The photocurrent includes a sharp peak and a broad tail indexed to electron and ion currents, respectively. The lowest concentration of anthraxcene (C14H10) in order of few nano-grams per milliliter was detected by this multiphoton ionization configuration.
Kinetics of Neutralizing Antibodies in Patients Naturally Infected by H5N1 Virus
Philippe Buchy,Sirenda Vong,Simon Chu,Jean-Michel Garcia,Tran Tinh Hien,Vo Minh Hien,Mey Channa,Do Quang Ha,Nguyen Van Vinh Chau,Cameron Simmons,Jeremy J. Farrar,Malik Peiris,Menno D. de Jong
PLOS ONE , 2012, DOI: 10.1371/journal.pone.0010864
Abstract: Little is known about the kinetics of anti-H5 neutralizing antibodies in naturally H5N1-infected patients with severe clinical illness or asymptomatic infection.
Higuchi Fractal Properties of Onset Epilepsy Electroencephalogram
Truong Quang Dang Khoa,Vo Quang Ha,Vo Van Toi
Computational and Mathematical Methods in Medicine , 2012, DOI: 10.1155/2012/461426
Abstract: Epilepsy is a medical term which indicates a common neurological disorder characterized by seizures, because of abnormal neuronal activity. This leads to unconsciousness or even a convulsion. The possible etiologies should be evaluated and treated. Therefore, it is necessary to concentrate not only on finding out efficient treatment methods, but also on developing algorithm to support diagnosis. Currently, there are a number of algorithms, especially nonlinear algorithms. However, those algorithms have some difficulties one of which is the impact of noise on the results. In this paper, in addition to the use of fractal dimension as a principal tool to diagnose epilepsy, the combination between ICA algorithm and averaging filter at the preprocessing step leads to some positive results. The combination which improved the fractal algorithm become robust with noise on EEG signals. As a result, we can see clearly fractal properties in preictal and ictal period so as to epileptic diagnosis.
Iterative method for a biharmonic problem with crack singularities
Dang Quang A,Truong Ha Hai,Vu Vinh Quang
Applied Mathematical Sciences , 2012,
Abstract:
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