Publications by authors named "Ding-feng Zhang"

Plasmon coupling-induced intense local electrical field in the gap of closely packed metal nanoparticles (NPs) has been known capable of significantly enhancing optical properties of chromophores. Here, we have investigated aggregation-induced plasmon coupling-enhanced one-photon excitation (1PE) and two-photon excitation (2PE) fluorescence of dyes using Ag NPs of three different sizes (20, 36, and 48 nm). The fluorescence of a model dye, Rhodamine B isothiocyanate (RiTC), was prequenched by attaching to Ag NPs and subsequently enhanced upon forming aggregates of Ag NPs.

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Solution-processed organo-lead halide perovskites have emerged as promising optical gain media for tunable coherent light sources. The lasing performance is generally determined by the as-synthesized crystal quality. Noble metal nanostructures have been widely utilized to enhance optical responses due to their unique property of localized surface plasmon resonance.

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A biotrickling filter (BTF) was designed for treating mixed waste gases, which contained hydrogen sulfide (H2S), tetrahydrofuran (THF) and dichloromethane (DCM) at the start-up and steady states. The removal efficiency of H2S and DCM could maintain about 99% and 60%, respectively, and the removal efficiency of DCM was reduced from 90% to 37% with the shortening empty bed retention time (EBRT) form 50 to 20 seconds when the inlet concentrations were 200, 100, 100 mg x m(-3) of H2S, THF, DCM, respectively. In the theoretical study, the biodegradation efficiency of contaminants was H2S > THF > DCM by analyzing the Michaelis-Menten Dynamic model.

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Objective: To evaluate the academic level and the popularity of the Chinese Journal of Hepatology in China in 2005.

Methods: We used bibliometrics to analyze statistically the original articles of the Chinese Journal of Hepatology cited by Chinese periodicals included in the Wanfang Data in 2005.

Results: (1) 699 published papers in the journal in 2005 were cited 1673 times and 44 of them were cited 720 times in total.

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Objective: To study the academic level, subject location, influence, readership, degree of usage and recognition by the readers of the Chinese Journal of Hepatology.

Methods: By referring to the "Chinese & T Journal Citation Reports" edited by the Institute of Scientific and Technical Information of China, the numbers, types, pertinent diseases, funding statues, citing, and the intervals between receiving and the publication of all the articles published in the 72 issues of the Chinese Journal of Hepatology were statistically analyzed. The work units and the geographic locations of the authors were also analyzed.

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Aim: To explore the expression and replication of hepatitis B virus (HBV) DNA in primary duck hepatocytes (PDHs).

Methods: Complete HBV genome was transfected into PDHs by electroporation (transfected group, 1.19 x 10(12) copies of linear HBV DNA/1 x 10(7) PDHs).

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Objectives: To evaluate the efficacy and safety of famciclovir on the decreasing levels of serum HBV-DNA and ALT and HBeAg/antiHBe seroconversion in chronic hepatitis B patients irresponsive to 3 months treatment with alpha interferon.

Methods: Two hundred and nineteen patients with chronic HBV infection, defined as positive HBsAg, HBeAg and HBV DNA, were enrolled and randomly half-and- half put into famciclovir and placebo groups. The two groups received either famciclovir 500 mg tid or a placebo treatment for 24 weeks, and then were followed-up for another 24 weeks with no treatment.

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Article Synopsis
  • The study aimed to assess the antiviral effectiveness and safety of two different doses of entecavir in patients with chronic HBV before moving to larger trials.
  • In a randomized trial with 212 participants, both 0.1 mg and 0.5 mg doses of entecavir significantly reduced HBV DNA levels compared to a placebo after 28 days.
  • The 0.5 mg dose showed better and longer-lasting viral suppression than the 0.1 mg dose, with no major safety concerns, suggesting it is the preferred choice for future studies.
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Objective: The Chinese Journal of Hepatology is a key journal in the research field of liver diseases in China. Ranked by the impact factor, which was issued and used by the Institute of Scientific and Technical Information of China, it is in fourth position among medical journals in China. In order to evaluate the journal, some facts about it were surveyed, including the number of pages, the number of papers in each issue, organizations of the authors, funding for their works, the impact factor, immediacy index, statuses of the articles' references, and a listing of their being cited.

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Objective: To analysis the efficacy and safety of lamivudine (made in China) therapy for 52 weeks in adolescent patients with chronic hepatitis B (CHB).

Methods: One hundred and five teenage CHB patients were treated with lamivudine 100 mg once daily for 52 weeks. Patients with elevated ALT at baseline were in group 1 and those with normal ALT were in group 2.

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Objective: To compare the positive rate of antibody to hepatitis C virus (anti-HCV) in sera of patients with severe viral hepatitis between 1984-1990 year and 1997-2003 year.

Methods: Serum anti-HCV was detected by enzyme linked-immunosorbent assay (ELISA). It was detected by the first generation (1st) ELISA (Ortho Co.

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Objectives: By studying the possibility and degree of the replication and expression of human hepatitis B virus (HBV) genes in normal liver cells from heterogenous species, such as primary duck hepatocytes (PDH) and primary rat hepatocytes (PRH), to investigate the species-specificity of HBV infection and replication.

Methods: PDH and PRH isolated by in situ perfusion with low concentration collagenase were transfected with complete HBV genome by electroporation (transfection group, about 1.19 10(12) copies of linear HBV DNA/1 10(7) PRH/PDH).

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Objective: To clarify the natural history of chronic hepatitis B so as to evaluate its long-term therapeutic outcome of the patients and the efficacy of antiviral drugs.

Methods: A cohort of 183 biopsy-proven chronic hepatitis B patients (mean age of 31.75+/-8.

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