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  1. Article ; Online: Withaperuvin O, a new withanolide from

    Van Cong, Pham / Thi Trang, Vu / Quynh Lien, Le / Xuan Hoan, Vu / Minh Ngoc, Tran / Thanh Tuan, Do / Thi Thu Hien, Do / Van Hieu, Ngo / Viet Duc, Ngo / Le Tuan Anh, Hoang

    Natural product research

    2024  , Page(s) 1–8

    Abstract: ... Physalis ... ...

    Abstract Physalis peruviana
    Language English
    Publishing date 2024-03-01
    Publishing country England
    Document type Journal Article
    ZDB-ID 2185747-7
    ISSN 1478-6427 ; 1478-6419
    ISSN (online) 1478-6427
    ISSN 1478-6419
    DOI 10.1080/14786419.2024.2323539
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Impact of CEO’s Characteristics on Firm Performance

    Dinh Kien Cao / Hai Yen Hoang / Minh Ngoc Tran

    Journal of International Economics and Management, Iss 89, Pp 56-

    the Case of Vietnam

    2016  Volume 67

    Abstract: Using a sample of 248 firms on Hanoi and Ho Chi Minh City stock exchanges, we shows that education level and tenure of the CEOs do not have any impact on the performance of Vietnamese firms. However, when the CEOs hold the undergraduate degree, tenure ... ...

    Abstract Using a sample of 248 firms on Hanoi and Ho Chi Minh City stock exchanges, we shows that education level and tenure of the CEOs do not have any impact on the performance of Vietnamese firms. However, when the CEOs hold the undergraduate degree, tenure has a positive impact on the performance of Vietnamese firms. Firms with female CEOs realize a significantly lower operation efficiency compared to that of firms with male CEOs. Moreover, splitting CEO and chairperson roles has a positive impact on the performance of Vietnamese firms.
    Keywords corporate governance ; behavior finance ; financial risk and risk management ; Economics as a science ; HB71-74
    Language English
    Publishing date 2016-12-01T00:00:00Z
    Publisher HDV INSER., JSC
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  3. Article: Likelihood-free inference in high dimensions with synthetic likelihood

    Ong, Victor M.-H / David J. Nott / Minh-Ngoc Tran / Scott A. Sisson / Christopher C. Drovandi

    Elsevier B.V. Computational statistics & data analysis. 2018 Dec., v. 128

    2018  

    Abstract: One popular approach to likelihood-free inference is the synthetic likelihood method, which assumes that some data summary statistics which are informative about model parameters are approximately Gaussian for each value of the parameter. Based on this ... ...

    Abstract One popular approach to likelihood-free inference is the synthetic likelihood method, which assumes that some data summary statistics which are informative about model parameters are approximately Gaussian for each value of the parameter. Based on this assumption, a Gaussian likelihood can be constructed, where the mean and covariance matrix of the summary statistics are estimated via Monte Carlo. The objective of the current work is to improve on a variational implementation of the Bayesian synthetic likelihood introduced recently in the literature, to enable the application of that approach to high-dimensional problems. Here high-dimensional can mean problems with more than one hundred parameters. The improvements introduced relate to shrinkage estimation of covariance matrices in estimation of the synthetic likelihood, improved implementation of control variate approaches to stochastic gradient variance reduction, and parsimonious but expressive parametrizations of variational normal posterior covariance matrices in terms of factor structures to reduce the dimension of the optimization problem. The shrinkage covariance estimation is particularly important for stability of stochastic gradient optimization with noisy likelihood estimates. However, as the dimension increases, the quality of the posterior approximation deteriorates unless the number of Monte Carlo samples used to estimate the synthetic likelihood also increases. We explore the properties of the method in some real examples in cases where either the number of summary statistics, the number of model parameters, or both, are large.
    Keywords Bayesian theory ; models ; shrinkage ; system optimization ; variance ; variance covariance matrix
    Language English
    Dates of publication 2018-12
    Size p. 271-291.
    Publishing place Elsevier B.V.
    Document type Article
    ZDB-ID 1478763-5
    ISSN 0167-9473
    ISSN 0167-9473
    DOI 10.1016/j.csda.2018.07.008
    Database NAL-Catalogue (AGRICOLA)

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  4. Article: Three new flavonol glycosides from Fissistigma pallens

    Nhiem, Nguyen Xuan / Thinh, Ngo Sy / Thu, Nguyen Thi Bich / Anh, Luu The / Minh Ngoc, Tran / Tai, Bui Huu / Yen, Pham Hai / Kiem, Phan Van / Van Minh, Chau / Park, Seonju / Kim, Seung Hyun

    Bioscience, biotechnology, and biochemistry. 2019 Dec. 2, v. 83, no. 12

    2019  

    Abstract: Three new flavonol glycosides, fissflavosides A-C (1–3), together with six known flavonol glycosides, kaempferol 3-O-α-L-rhamnopyranosyl-(1→2)-β-D-galactopyranoside (4), kaempferol 3-O-α-L-rhamnopyranosyl-(1→6)-β-D-galactopyranoside (5), kaempferol 3-O-α- ...

    Abstract Three new flavonol glycosides, fissflavosides A-C (1–3), together with six known flavonol glycosides, kaempferol 3-O-α-L-rhamnopyranosyl-(1→2)-β-D-galactopyranoside (4), kaempferol 3-O-α-L-rhamnopyranosyl-(1→6)-β-D-galactopyranoside (5), kaempferol 3-O-α-L-rhamnopyranosyl-(1→6)-β-D-glucopyranoside (6), rhamnetin 3-O-α-L-rhamnopyranosyl-(1→2)-β-D-glucopyranoside (7), rutin (8), and isorhamnetin 3-O-α-L-rhamnopyranosyl-(1→2)-β-D-galactopyranoside (9) were isolated from the methanol extract of the Fissistigma pallens leaves. Their chemical structures were determined by 1D-, 2D-NMR, and MS data as well as in comparison with reported data in the literature. Compounds 1–9 showed weak cytotoxic activity on three human cancer cell lines, HT-29, A-2058, A-549 with IC₅₀ ranging from 134.6 to 162.6 µM. In addition, the antioxidant capacities of compounds were also tested by ORAC assay. All compounds showed significant antioxidant with trolox equivalents ranging from 4.4 to 8.6 µM at the concentration of 1.0 µM. The results indicated 7 and 8 having meaningful reducing capacity of copper (I) ions of 2.7 to 6.9 µM at the concentrations of 1 and 2 µM.
    Keywords Fissistigma ; antioxidants ; biotechnology ; copper ; cytotoxicity ; glycosides ; humans ; isorhamnetin ; kaempferol ; methanol ; neoplasm cells ; rutin
    Language English
    Dates of publication 2019-1202
    Size p. 2177-2182.
    Publishing place Taylor & Francis
    Document type Article
    Note NAL-light
    ZDB-ID 1106450-x
    ISSN 1347-6947 ; 0916-8451
    ISSN (online) 1347-6947
    ISSN 0916-8451
    DOI 10.1080/09168451.2019.1654848
    Database NAL-Catalogue (AGRICOLA)

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    In stock of ZB MED Bonn / Germany

    Z 1783: Show issues

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  5. Article ; Online: Three new flavonol glycosides from

    Nhiem, Nguyen Xuan / Thinh, Ngo Sy / Thu, Nguyen Thi Bich / Anh, Luu The / Minh Ngoc, Tran / Tai, Bui Huu / Yen, Pham Hai / Kiem, Phan Van / Van Minh, Chau / Park, Seonju / Kim, Seung Hyun

    Bioscience, biotechnology, and biochemistry

    2019  Volume 83, Issue 12, Page(s) 2177–2182

    Abstract: Three new flavonol glycosides, fissflavosides A-C (1-3), together with six known flavonol glycosides, kaempferol 3- ...

    Abstract Three new flavonol glycosides, fissflavosides A-C (1-3), together with six known flavonol glycosides, kaempferol 3-
    MeSH term(s) Annonaceae/chemistry ; Antioxidants/pharmacology ; Carbohydrate Conformation ; Carbon-13 Magnetic Resonance Spectroscopy ; Cell Line, Tumor ; Drug Screening Assays, Antitumor ; Flavonols/chemistry ; Glycosides/chemistry ; Glycosides/isolation & purification ; Glycosides/pharmacology ; Humans ; Proton Magnetic Resonance Spectroscopy ; Spectrometry, Mass, Electrospray Ionization
    Chemical Substances Antioxidants ; Flavonols ; Glycosides
    Language English
    Publishing date 2019-08-25
    Publishing country England
    Document type Journal Article
    ZDB-ID 1106450-x
    ISSN 1347-6947 ; 0916-8451
    ISSN (online) 1347-6947
    ISSN 0916-8451
    DOI 10.1080/09168451.2019.1654848
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    In stock of ZB MED Cologne/Königswinter

    Zs.A 4647: Show issues Location:
    Je nach Verfügbarkeit (siehe Angabe bei Bestand)
    bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
    Jg. 1995 - 2021: Lesesall (2.OG)
    ab Jg. 2022: Lesesaal (EG)

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  6. Article: Employment of farmers in the Red River Delta during industrialization process

    Tran Minh Ngoc, Tran Minh / Le Thi Que

    Vietnam's socio-economic development : a social science review Vol. 62 , p. 64-80

    2010  Volume 62, Page(s) 64–80

    Author's details Tran Minh Ngoc; Le Thi Que
    Keywords Arbeitslosigkeit ; Ländlicher Raum ; Ländliche Industrie ; Roter Fluss (Vietnam) ; Vietnam
    Language English
    Size graph. Darst.
    Publishing place Hanoi
    Document type Article
    ZDB-ID 1343756-2
    ISSN 0868-359X
    Database ECONomics Information System

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