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  1. Article: Structural, optical and conductivity properties in tetragonal BaTi₁₋ₓCoₓO₃ (0≤ x ≤0.1)

    Phong, L. T. H. / Dang, N. T. / Dang, N. V. / Nguyen, Van-Quynh / Manh, D. H. / Nam, P. H. / Nguyen, L. H. / Phong, P. T.

    RSC advances. 2022 May 30, v. 12, no. 25

    2022  

    Abstract: This work investigates the structure, optical and electrical conductivity properties of BaTi₁₋ₓCoₓO₃ (0≤ x ≤0.1) ceramics prepared by the hydrothermal method. The X-ray diffraction and Raman scattering analysis demonstrates that the prepared samples have ...

    Abstract This work investigates the structure, optical and electrical conductivity properties of BaTi₁₋ₓCoₓO₃ (0≤ x ≤0.1) ceramics prepared by the hydrothermal method. The X-ray diffraction and Raman scattering analysis demonstrates that the prepared samples have a single-phase tetragonal structure with P4mm symmetry. The UV-vis diffuse reflectance spectrum confirms the influence of Co concentration on the direct optical band gap of BaTi₁₋ₓCoₓO₃ ceramics. The optical band gap shifts from 3.14 eV to 3.44 eV as the Co concentration increases from 0 to 0.1. The dielectric constant increases with the depletion of frequency according to the Maxwell–Wagner and Koops model. The AC conductivity versus frequency curve indicates that the conduction mechanism is determined by using the correlated barrier hopping (CBH) model. The Cole–Cole plot of the complex impedance was investigated for the prepared samples. The compounds showed dielectric relaxation of the non-Debye type.
    Keywords X-ray diffraction ; dielectric properties ; electrical conductivity ; hot water treatment ; models ; reflectance spectroscopy
    Language English
    Dates of publication 2022-0530
    Size p. 16119-16130.
    Publishing place The Royal Society of Chemistry
    Document type Article
    ISSN 2046-2069
    DOI 10.1039/d2ra01411d
    Database NAL-Catalogue (AGRICOLA)

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  2. Article ; Online: Structural, optical and conductivity properties in tetragonal BaTi

    Phong, L T H / Dang, N T / Dang, N V / Nguyen, Van-Quynh / Manh, D H / Nam, P H / Nguyen, L H / Phong, P T

    RSC advances

    2022  Volume 12, Issue 25, Page(s) 16119–16130

    Abstract: This work investigates the structure, optical and electrical conductivity properties of ... ...

    Abstract This work investigates the structure, optical and electrical conductivity properties of BaTi
    Language English
    Publishing date 2022-05-30
    Publishing country England
    Document type Journal Article
    ISSN 2046-2069
    ISSN (online) 2046-2069
    DOI 10.1039/d2ra01411d
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    Order via subito

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  3. Article ; Online: Sensitive MnFe

    Nha, T T N / Nam, P H / Phuc, N X / Nguyen, V Q / Nam, N H / Manh, D H / Tam, L T / Linh, N T N / Khanh, B T V / Lu, L T / Nguyen, L H / Phong, P T

    RSC advances

    2021  Volume 11, Issue 48, Page(s) 30054–30068

    Abstract: In this study, we present an experiment showing that designing multifunctional ... ...

    Abstract In this study, we present an experiment showing that designing multifunctional MnFe
    Language English
    Publishing date 2021-09-08
    Publishing country England
    Document type Journal Article
    ISSN 2046-2069
    ISSN (online) 2046-2069
    DOI 10.1039/d1ra03216j
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Correction: Sensitive MnFe

    Nha, T T N / Nam, P H / Phuc, N X / Nguyen, V Q / Nam, N H / Manh, D H / Tam, L T / Linh, N T N / Khanh, B T V / Lu, L T / Nguyen, L H / Phong, P T

    RSC advances

    2021  Volume 11, Issue 53, Page(s) 33372

    Abstract: This corrects the article DOI: 10.1039/D1RA03216J.]. ...

    Abstract [This corrects the article DOI: 10.1039/D1RA03216J.].
    Language English
    Publishing date 2021-10-12
    Publishing country England
    Document type Published Erratum
    ISSN 2046-2069
    ISSN (online) 2046-2069
    DOI 10.1039/d1ra90155a
    Database MEDical Literature Analysis and Retrieval System OnLINE

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    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

    Inter-library loan at ZB MED

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  5. Article: Sensitive MnFe₂O₄–Ag hybrid nanoparticles with photothermal and magnetothermal properties for hyperthermia applications [Erratum: October 2021, v.11(53), p.33372]

    Nha, T. T. N. / Nam, P. H. / Phuc, N. X. / Nguyen, V. Q. / Nam, N. H. / Manh, D. H. / Tam, L. T. / Linh, N. T. N. / Khanh, B. T. V. / Lu, L. T. / Nguyen, L. H. / Phong, P. T.

    RSC advances. 2021 Sept. 08, v. 11, no. 48

    2021  

    Abstract: In this study, we present an experiment showing that designing multifunctional MnFe₂O₄–Ag nanoparticles to act as a dual hyperthermia agent is an efficient route for enhancing their heating ability. Interestingly, the specific absorption rate of the ... ...

    Abstract In this study, we present an experiment showing that designing multifunctional MnFe₂O₄–Ag nanoparticles to act as a dual hyperthermia agent is an efficient route for enhancing their heating ability. Interestingly, the specific absorption rate of the heteromeric MnFe₂O₄–Ag nanoparticles increased 2.7 times under simultaneous irradiation of a 100 Oe magnetic field and 0.14 W cm⁻² laser compared to the action by the magnetic field alone, and more interestingly, is 30% higher than the sum of the two individual actions. The synergistic benefit of the magneto- and photo-thermal properties of the heteromeric structure can reduce the strengths of the magnetic field and laser intensities as well as their irradiation time to levels lower than those required in their hyperthermia applications individually. In vitro cytotoxicity analysis performed on HepG2 liver cancer and Hela cervical cancer cell lines showed that IC₅₀ values were 83 ± 5.6 μg mL⁻¹ (for HepG2) and 122.6 ± 19.8 μg mL⁻¹ (for Hela cells) after 48 h of incubation, therefore, the nanoparticles are moderately cytotoxic and nontoxic to HepG2 and Hela cells, respectively; which offers the potential of safe therapy.
    Keywords absorption ; cytotoxicity ; fever ; irradiation ; liver neoplasms ; magnetic fields ; neoplasm cells ; therapeutics ; uterine cervical neoplasms
    Language English
    Dates of publication 2021-0908
    Size p. 30054-30068.
    Publishing place The Royal Society of Chemistry
    Document type Article
    ISSN 2046-2069
    DOI 10.1039/d1ra03216j
    Database NAL-Catalogue (AGRICOLA)

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    Kategorien

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  6. Article ; Online: Factors associated with HIV-1 virological failure in an outpatient clinic for HIV-infected people in Haiphong, Vietnam.

    Huong, D T M / Bannister, W / Phong, P T / Kirk, O / Peters, L

    International journal of STD & AIDS

    2011  Volume 22, Issue 11, Page(s) 659–664

    Abstract: The objective of our study was to investigate factors associated with virological failure in 100 consecutive HIV-1 infected Vietnamese adults who initiated antiretroviral therapy (ART) from June 2007 to June 2008. Data were collected from medical records, ...

    Abstract The objective of our study was to investigate factors associated with virological failure in 100 consecutive HIV-1 infected Vietnamese adults who initiated antiretroviral therapy (ART) from June 2007 to June 2008. Data were collected from medical records, and a structured questionnaire was used in individual interviews to investigate factors associated with adherence to ART. Plasma HIV viral load was measured at the time of the interview. The median age was 35 years, 35% were women and heterosexual intercourse was the most common mode of HIV transmission (61%). After a median of 14 months since starting ART, 23% had detectable HIV-1 viral load (≥ 400 copies/mL). Patients who had developed a World Health Organization (WHO) clinical stage 4 condition at the time of initiation of ART were more likely to experience virological failure than those in stages 1-3, odds ratio (OR): 5.20 (95% confidence interval [CI] 1.34-20.11), P = 0.017. Patients who reported that their health status was evaluated by a physician at each visit were less likely to experience virological failure, OR: 0.02 (95% CI 0.00-0.24), P = 0.002.
    MeSH term(s) Adult ; Ambulatory Care Facilities ; Anti-HIV Agents/administration & dosage ; Antiretroviral Therapy, Highly Active/methods ; Female ; HIV Infections/drug therapy ; HIV Infections/virology ; HIV-1/isolation & purification ; Humans ; Interviews as Topic ; Male ; Medication Adherence/statistics & numerical data ; Risk Factors ; Surveys and Questionnaires ; Treatment Failure ; Vietnam ; Viral Load
    Chemical Substances Anti-HIV Agents
    Language English
    Publishing date 2011-11
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1018089-8
    ISSN 1758-1052 ; 0956-4624
    ISSN (online) 1758-1052
    ISSN 0956-4624
    DOI 10.1258/ijsa.2011.010515
    Database MEDical Literature Analysis and Retrieval System OnLINE

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