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A Study of the Optical Properties in ZnWO<sub>4</sub>Nanorods Synthesized by Hydrothermal Method

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Materials Sciences and Applications 2011年第8期2卷 988-992页

作者： nguyen Van Minh nguyen Manh hung Center for Nano Science and Technology and Department of Physics Hanoi National University of Education 136 Xuan Thuy Road Hanoi Vietnam

We investigate the effect of synthesized time on the structure, as well as optical properties in ZnWO4 nano rod prepared by hydrothermal method. The prepared rods were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Raman scattering, absorption and photoluminescent (PL) spectra techniques. The size and morphology of ZnWO4 nano-rod can be controlled by adjusting the reaction time. The resultant sample is a pure phase of ZnWO4 without any impurities. The results showed that the optical property of ZnWO4 nanoparticles obviously relied on their rod sizes.

关键词： Znwo4 Nano Rod Raman Spectroscopy Absorption Photoluminescence

γγ interactions with KLOE

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Chinese Physics C 2010年第6期34卷 795-800页

作者： Federico nguyen INFN Sezione 'Roma TRE'

Studies of γγ interactions are performed with the KLOE detector, without tagging of the outgoing e^＋e^-. The data sample is from an integrated luminosity of 240 pb^-1. It was collected at the φ-factory DAONE with e^＋e^- beams colliding at √s ≌1 GeV, below the φ resonance peak. We present preliminary results concerning the observation of the γγ→η process and the evidence for γγ→π^0π^0 production at low π^0π^0 invariant masses.

关键词： e^+e^- collisions pseudoscalar meson width π pair production

Push forward LC-MS-based therapeutic drug monitoring and pharmacometabolomics for anti-tuberculosis precision dosing and comprehensive clinical management

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Journal of Pharmaceutical Analysis 2024年第1期14卷 16-38页

作者： nguyen Quang Thu nguyen Tran Nam Tien nguyen Thi Hai Yen Thuc-Huy Duong nguyen Phuoc Long Huy Truong nguyen Department of Pharmacology and PharmacoGenomics Research Center Inje University College of MedicineBusan47392Republic of Korea Department of Chemistry University of EducationHo Chi Minh City700000Viet Nam Faculty of Pharmacy Ton Duc Thang UniversityHo Chi Minh City700000Viet Nam

The spread of tuberculosis(TB),especially multidrug-resistant TB and extensively drug-resistant TB,has strongly motivated the research and development of new anti-TB *** strategies to facilitate drug combinations,including pharmacokinetics-guided dose optimization and toxicology studies of first-and second-line anti-TB drugs have also been introduced and *** chromatography-mass spectrometry(LC-MS)has arguably become the gold standard in the analysis of both endo-and exo-genous *** technique has been applied successfully not only for therapeutic drug monitoring(TDM)but also for pharmacometabolomics *** improves the effectiveness of treatment,reduces adverse drug reactions,and the likelihood of drug resistance development in TB patients by determining dosage regimens that produce concentrations within the therapeutic target *** on TDM,the dose would be optimized individually to achieve favorable *** is essential in generating and validating hypotheses regarding the metabolism of anti-TB drugs,aiding in the discovery of potential biomarkers for TB diagnostics,treatment monitoring,and outcome *** article highlighted the current progresses in TDM of anti-TB drugs based on LC-MS bioassay in the last two ***,we discussed the advantages and disadvantages of this technique in practical *** pressing need for non-invasive sampling approaches and stability studies of anti-TB drugs was ***,we provided perspectives on the prospects of combining LC-MS-based TDM and pharmacometabolomics with other advanced strategies(pharmacometrics,drug and vaccine developments,machine learning/artificial intelligence,among others)to encapsulate in an all-inclusive approach to improve treatment outcomes of TB patients.

关键词： Tuberculosis Therapeutic drug monitoring LC-MS MIPD Pharmacometabolomics Precision medicine

A rough-granular computing in discovery of process models from data and domain knowledge

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重庆邮电大学学报（自然科学版） 2008年第3期20卷 341-347页

作者： nguyen hung Son SKOWRON Andrzej Institute of Mathematics Warsaw UniversityBanacha 2 02-097 Warsaw Poland

The rapid expansion of the Internet has resulted not only in the ever growing amount of data therein stored,but also in the burgeoning complexity of the concepts and phenomena pertaining to those *** issue has been vividly compared by the renowned statistician,*** of Stanford University,to the advances in human mobility from the period of walking afoot to the era of jet *** essential changes in data have brought new challenges to the development of new data mining methods,especially that the treatment of these data increasingly involves complex processes that elude classic modeling paradigms."Hot" datasets like biomedical,financial or net user behavior data are just a few *** such temporal or stream data is on the agenda of many research centers and companies *** the data mining community,there is a rapidly growing interest in developing methods for process mining,e.g.,for discovery of structures of temporal processes from *** on process mining have recently been undertaken by many renowned centers *** research is also related to functional data analysis,cognitive networks,and dynamical system modeling,e.g.,in *** the lecture,we outline an approach to discovery of processes from data and domain knowledge which is based on the rough-granular computing.

关键词：粗糙集粒度计算数据处理信息技术

Regularization Inertial Proximal Point Algorithm for Common Solutions of a Finite Family of Inverse-strongly Monotone Equations

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Acta Mathematica Sinica,English Series 2010年第3期26卷 587-594页

作者： nguyen BUONG Vietnamse Academy of Science and Technology Institute of Information Technology

The aim of the paper is to propose an iterative regularization method of proximal point type for finding a common solution for a finite family of inverse-strongly monotone equations in Hilbert spaces.

关键词： maximal monotone operators hemicontinuous regularization

Automatic Identification Fingerprint Based on Machine Learning Method

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Journal of the Operations Research Society of China 2022年第4期10卷 849-860页

作者： Long The nguyen Huong Thu nguyen Alexander Diomidovich Afanasiev Tao Van nguyen Laboratory of Artificial Intelligence and Machine Learning Institute of Information Technology and Data ScienceIrkutsk National Research Technical UniversityIrkutskRussia Baikal School of BRICS Irkutsk National Research Technical UniversityIrkutskRussia University of Information and Communication Technology Thai Nguyen UniversityThai NguyenViet Nam

The fingerprint identification technology has been developed and applied effectively to security systems in financial transactions,personal information security,national security,and other *** this paper,we proposed the development of a fingerprint identification system based on image processing methods that clarify fingerprint contours,using machine learning methods to increase processing speed and increase the accuracy of the fingerprint identification *** identification system consists of the following main steps:improving image quality and image segmentation to identify the fingerprint area,extracting features,and matching the *** accuracy of the system reached 97.75%on the mixed high-and low-quality fingerprint database.

关键词： Fingerprint identification Feature extraction Image segmentation Wavelet transform Neural network algorithm Machine learning

Electrochemical Immunosensor for Detection of Atrazine Based on Polyaniline/Graphene

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Journal of Materials Science & Technology 2016年第6期32卷 539-544页

作者： nguyen Van Chu nguyen Hai Binh Cao Thi Thanh nguyen Van Tu nguyen Le Huy nguyen Tuan Dzung Phan Ngoc Minh Vu Thi Thu Tran Dai Lam Institute of Materials Science Vietnam Academy of Science and Technology18 Hoang Quoc VietCau Giay.HanoiViet Nam School of Chemical Engineering.Hanoi University of Science and Technology 1 Dai Co VietHanoiViet Ham Institute for Tropical Technology.Vietnam Academy of Science and Technology 18 Hoang Quoc VietHanoiViet Nam Center for High Technology Development Vietnam Academy of Science and Technology18 Hoang Quoc VietHanoiViet Nam University of Science and Technology of Hanoi.18 Hoang Quoc Viet HanoiViet Ham Graduate University of Science and Technology.Vietnam Academy of Science and Technology 18 Hoang Quoc Viet.HanoiViet Nam

In this study, a novel layer-by-layer polyaniline/graphene （PANi/Gr） structure for electrochemical detec- tion of atrazine was developed. Gr film was synthesized by thermal chemical vapor deposition （CVD） method and transferred onto the PANi-predeposited microelectrode. The properties of PANi/Gr film were thoroughly investigated by high-resolution transmission electron microscopy and Raman techniques. The most attractive feature of this system is a suitable microenvironment, which could provide an amplifi- cation of the conductive signal, thus may contribute to enhancing electron transfer and subsequently improve the sensitivity in electrochemical measurements. With low detection limit （- 43 × 10 -12 g/L）, ac-ceptable stability and good reproducibility, the proposed electrochemical immunosensor could be advantageously extended for multiplexed detection of other agents of environmental pollution.

关键词： Electrochemical immunosensor Polyaniline Graphene Atrazine

On the Multiplicity and the Cohen-Macaulayness of Fiber Cones of Graded Modules

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Algebra Colloquium 2021年第1期28卷 13-32页

作者： nguyen Tien Manh Department of Mathematics Hung Vuong University Nguyen Tat Thanh StreetViet Tri CityPhu ThoVietnam

Let(A,m)be a Noetherian local ring with maximal ideal m,I an ideal of A,J an m-primary ideal of A,N a finitely generated A-module,S=■n≥0 Sn a finitely generated standard graded algebra over A and M=■n≥0 Mn a finitely generated graded *** characterize the multiplicity and the Cohen-Macaulayness of the fiber cone F(M)=■n≥0 Mn/JM_(n).As an application,we obtain some results on the multiplicity and the Cohen--Macaulayness of the fiber cone■n≥0 I^(n)N/JI^(n)N.

关键词： (FC)-sequence filter-regular sequence multiplicity Cohen-Macaulay fiber cone

Hardy factorization in terms of fractional commutators in Lorentz spaces

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Frontiers of Mathematics in China 2022年第5期17卷 853-873页

作者： nguyen Anh DAO Institute of Applied Mathematics University of Economics Ho Chi Minh CityHo Chi Minh CityVietnam

We provide a constructive proof of H^(1)(R^(d))(the classical Hardy space)factorization in terms of fractional commutators in Lorentz *** a direct application,we obtain a characterization of functions in BMO ***,we al... 详细信息

关键词： BMO CMO Lorentz space commutator Hardy space Riesz potentia