Intimate Partner Violence Experiences among Men Who Have Sex in Hanoi, Vietnam.

Purpose: Intimate partner violence (IPV) victimization is a pressing issue among men who have sex with men (MSM) and has profound health implications. This study aims to estimate the prevalence of IPV and identify factors associated with its occurrence among MSM in Hanoi, Vietnam.

Methods: A cross-sectional study was conducted from March to May 2023 at an MSM-friendly sexual health clinic in Hanoi.

Preferences and Acceptability of Testing for Sexually Transmitted Infections in an HIV Pre-Exposure Prophylaxis clinic in Hanoi, Vietnam.

Background: Men who have sex with men (MSM) using HIV Pre-Exposure Prophylaxis (PrEP) are a vulnerable population with a high prevalence of sexually transmitted infections (STIs). Self-collection of specimens could improve STI testing, yet implementation in low-resource settings is limited. The study aimed to assess the feasibility and acceptability of self-collection for STI testing and to understand STI testing preferences among PrEP clients in Hanoi, Vietnam.

Antimicrobial susceptibilities of oral Neisseria from men on HIV pre-exposure prophylaxis in Hanoi, Vietnam.

Background: Antimicrobial resistance (AMR) in Neisseria gonorrhoeae (N. gonorrhoeae) is an urgent global health concern. Commensal Neisseria species in the oropharynx are an important reservoir of AMR genes that are transferred to N.

What could be the low-temperature limit of atomic layer deposition of platinum using MeCpPtMe and oxygen?

We explore the low-temperature limit of atomic layer deposition of Pt using MeCpPtMe and O. We reveal that by supplying a sufficiently high O exposure, highly dispersed and thermally stable Pt sub-nanometer clusters can be deposited onto the surface of P25 TiO nanoparticles even at room temperature by atmospheric-pressure ALD.

Enhancement of Photothermal Conversion by TiN Nanoparticles-Embedded Black Paint and Applications in Solar Drying of Red Chilli.

This work explores a new application of titanium nitride nanoparticles (TiN NPs) as efficient photothermal materials in enhancing the greenhouse effect. We demonstrate that a simple greenhouse using TiN NPs-embedded black paint boasts several advantages in solar drying technology, which are indicated by the drying of red chilli. In particular, the greenhouse using TiN NPs significantly improves the drying efficiency, which reduces the mass of red chilli by approximately four times and results in dried chilli with a moisture content of 10% within two days.

Routine Testing for and Infections within an HIV Pre-Exposure Prophylaxis Program in Hanoi, Vietnam: Implications for Low- and Middle-Income Countries.

Background: Data on (NG) and (CT) infections within HIV pre-exposure prophylaxis (PrEP) programs in low- and middle-income countries (LMICs) are limited. Our study reports the prevalence, anatomical distribution, and correlates of NG and CT infections within an HIV PrEP program in Hanoi, Vietnam.

Methods: From January-December 2022, HIV PrEP program clients who were male at birth, ≥16 years old, reported ≥1 male sex partner in the prior 12 months, were enrolled.

A Brief Alcohol Intervention (BAI) to reduce alcohol use and improve PrEP outcomes among men who have sex with men in Vietnam: study protocol for a randomized controlled trial.

Background: In Vietnam and other global settings, men who have sex with men (MSM) have become the population at greatest risk of HIV infection. Although HIV pre-exposure prophylaxis (PrEP) has been implemented as a prevention strategy, PrEP outcomes may be affected by low persistence and adherence among MSM with unhealthy alcohol use. MSM have a high prevalence of unhealthy alcohol use in Vietnam, which may affect PrEP outcomes.

Mycoplasma genitalium Infections Among Participants in an HIV Pre-exposure Prophylaxis Program in Hanoi, Vietnam.

Background: Mycoplasma genitalium causes a sexually transmitted infection and is also emerging as an important antimicrobial resistant pathogen. Data on M. genitalium infections among men who have sex with men (MSM) in low-resource settings are sparse.

Scaling up a brief alcohol intervention to prevent HIV infection in Vietnam: a cluster randomized, implementation trial.

Background: Evidence-based interventions (EBIs) often address normative behaviors. If a behavior is also common among clinicians, they may be skeptical about the necessity or effectiveness of an EBI. Alternatively, clinicians' attitudes and behaviors may be misaligned, or they may lack the knowledge and self-efficacy to deliver the EBI.

Layer-by-layer thinning of two-dimensional materials.

Etching technology - one of the representative modern semiconductor device makers - serves as a broad descriptor for the process of removing material from the surfaces of various materials, whether partially or entirely. Meanwhile, thinning technology represents a novel and highly specialized approach within the realm of etching technology. It indicates the importance of achieving an exceptionally sophisticated and precise removal of material, layer-by-layer, at the nanoscale.

Enhancing control in spatial atomic layer deposition: insights into precursor diffusion, geometric parameters, and CVD mitigation strategies.

In recent years, spatial atomic layer deposition (SALD) has gained significant attention for its remarkable capability to accelerate ALD growth by several orders of magnitude compared to conventional ALD, all while operating at atmospheric pressure. Nevertheless, the persistent challenge of inadvertent contributions from chemical vapor deposition (CVD) in SALD processes continues to impede control over film homogeneity, and properties. This research underscores the often-overlooked influence of diffusion coefficients and important geometric parameters on the close-proximity SALD growth patterns.

Effectiveness and safety of a cream product containing zinc oxide for alleviating mosquito bite symptoms.

Background: People frequently experience discomfort with immediate wheal, delayed papules, and pruritus from mosquito bites. A topical cream product containing zinc oxide is commercially available for the management of insect bites, but there has been no published evidence for its effectiveness and safety.

Aims: To evaluate the effectiveness and safety of this product in symptoms caused by mosquito bites.

anti-inflammatory, molecular docking and molecular dynamics simulation of oleanane-type triterpenes from aerial parts of .

Bioactive-guided investigation of the aerial parts of Naiki, Tagane, and Yahara (Rubiaceae) led to the isolation of four triterpenes, including two new triterpenes recurvatanes A and B (1 and 2), along with two known compounds 3β,6β,23-trihydroxyolean-12-en-28-oic acid (3) and 3β,6β,19α,23-tetrahydroxyolean-12-en-28-oic acid (4). The chemical structures of the compounds were identified from spectroscopic data and by comparison with the literature. A comprehensive review of NMR data of the oleanane-type triterpenes bearing 3-hydroxy and 4-hydroxymethylene groups indicated the characteristic spectroscopic features in this series.

Dual promotional effect of Cu O clusters grown with atomic layer deposition on TiO for photocatalytic hydrogen production.

The promotional effects on photocatalytic hydrogen production of Cu O clusters deposited using atomic layer deposition (ALD) on P25 TiO are presented. The structural and surface chemistry study of Cu O/TiO samples, along with first principles density functional theory simulations, reveal the strong interaction of ALD deposited Cu O with TiO, leading to the stabilization of Cu O clusters on the surface; it also demonstrated substantial reduction of Ti to Ti on the surface of Cu O/TiO samples after Cu O ALD. The Cu O/TiO photocatalysts showed remarkable improvement in hydrogen productivity, with 11 times greater hydrogen production for the optimum sample compared to unmodified P25.

Gold nanoparticle-based optical nanosensors for food and health safety monitoring: recent advances and future perspectives.

Modern society has been facing serious health-related problems including food safety, diseases and illness. Hence, it is urgent to develop analysis methods for the detection and control of food contaminants, disease biomarkers and pathogens. As the traditional instrumental methods have several disadvantages, including being time consuming, and having high cost and laborious procedures, optical nanosensors have emerged as promising alternative or complementary approaches to those traditional ones.

Prevalence, Anatomic Distribution, and Correlates of Chlamydia trachomatis and Neisseria gonorrhoeae Infections Among a Cohort of Men Who Have Sex With Men in Hanoi, Vietnam.

Background: Neisseria gonorrhoeae (NG) and Chlamydia trachomatis (CT) disproportionately affect men who have sex with men (MSM). Data on the prevalence, anatomical distribution, and correlates of NG and CT infections among MSM in Vietnam are limited.

Methods: Between July 2017 and April 2019, MSM 16 years or older without HIV were enrolled into an observational cohort study.

Low-operating temperature and remarkably responsive methanol sensors using Pt-decorated hierarchical ZnO structure.

Highly responsive methanol sensors working at low temperatures are developed using hierarchical ZnO nanorods decorated by Pt nanoparticles. The sensing materials are fabricated following a 3-step process: electrospinning of ZnO nanofibers, hydrothermal growth of hierarchical ZnO nanorods on the nanofibers and UV-assisted deposition of Pt nanoparticles. The morphology, structure and properties of the materials are examined by field-effect scanning electron microscopy, transmission electron microscope, x-ray diffraction, x-ray photoelectron spectroscopy, UV-Vis absorption spectroscopy, and electrical measurements.

Controlled growth of ultrasmall CuO clusters on TiOnanoparticles by atmospheric-pressure atomic layer deposition for enhanced photocatalytic activity.

This work presents a gas-phase approach for the synthesis of CuO/TiOpowder-based photocatalysts using atomic layer deposition (ALD). The process is carried out in a fluidized bed reactor working at atmospheric pressure using (trimethylvinylsilyl)-hexafluoroacetulacetonate copper(I) as the Cu-precursor and HO vapor as the oxidizer. The saturating regime of the chemical reactions and the linear growth of ALD are achieved.

Titanium Nitride Nanodonuts Synthesized from Natural Ilmenite Ore as a Novel and Efficient Thermoplasmonic Material.

Nanostructures of titanium nitride (TiN) have recently been considered as a new class of plasmonic materials that have been utilized in many solar energy applications. This work presents the synthesis of a novel nanostructure of TiN that has a nanodonut shape from natural ilmenite ore using a low-cost and bulk method. The TiN nanodonuts exhibit strong and spectrally broad localized surface plasmon resonance absorption in the visible region centered at 560 nm, which is well suited for thermoplasmonic applications as a nanoscale heat source.

Substantial Need for Preexposure Prophylaxis Among Men Who Have Sex With Men in Hanoi, Vietnam.

We used data from the Health in Men-Hanoi cohort to determine the proportion of HIV-negative men who have sex with men with PrEP indications in Hanoi. Among 717 men who have sex with men, 537 (72.2% [66.

Synthesis of a Rationally Designed Multi-Component Photocatalyst Pt:SiO:TiO(P25) with Improved Activity for Dye Degradation by Atomic Layer Deposition.

Photocatalysts for water purification typically lack efficiency for practical applications. Here we present a multi-component (Pt:SiO:TiO(P25)) material that was designed using knowledge of reaction mechanisms of mono-modified catalysts (SiO:TiO, and Pt:TiO) combined with the potential of atomic layer deposition (ALD). The deposition of ultrathin SiO layers on TiO nanoparticles, applying ALD in a fluidized bed reactor, demonstrated in earlier studies their beneficial effects for the photocatalytic degradation of organic pollutants due to more acidic surface Si-OH groups which benefit the generation of hydroxyl radicals.

From Single Atoms to Nanoparticles: Autocatalysis and Metal Aggregation in Atomic Layer Deposition of Pt on TiO Nanopowder.

A fundamental understanding of the interplay between ligand-removal kinetics and metal aggregation during the formation of platinum nanoparticles (NPs) in atomic layer deposition of Pt on TiO nanopowder using trimethyl(methylcyclo-pentadienyl)platinum(IV) as the precursor and O as the coreactant is presented. The growth follows a pathway from single atoms to NPs as a function of the oxygen exposure (P × time). The growth kinetics is modeled by accounting for the autocatalytic combustion of the precursor ligands via a variant of the Finke-Watzky two-step model.