Combining CD4 count, CD8 count and CD4/CD8 ratio to predict risk of mortality among HIV-positive adults after therapy: a group-based multi-trajectory analysis.

Introduction: Previous studies have indicated different immunological recovery trajectories based on CD4 count or CD4/CD8 ratio. However, these immune indicators are interconnected, and relying solely on one indicator may lead to inaccurate estimates. Therefore, it is essential to develop a comprehensive trajectory model that integrates CD4 count, CD8 count and CD4/CD8 ratio.

Analysis on epidemiological characters and HIV care continuum of HIV-infected students: a retrospective cohort study in Shandong province, China.

Backgroud: The proportion of HIV-infected students in China showed an increasing trend. This study aimed to identify the epidemiological characteristics and the HIV care continuum for HIV-infected students in Shandong Province, China.

Methods: Case report and follow-up data of HIV-infected students were obtained from the National HIV/AIDS comprehensive response information management system.

A Multifunctional Polymer as an Interfacial Layer for Efficient and Stable Perovskite Solar Cells.

Metal-cation defects and halogen-anion defects in perovskite films are critical to the efficiency and stability of perovskite solar cells (PSCs). In this work, a random polymer, poly(methyl methacrylate-co-acrylamide) (PMMA-AM), was synthesized to serve as an interfacial passivation layer for synergistically passivating the under-coordinated Pb and anchor the I of the [PbI ] octahedron. Additionally, the interfacial PMMA-AM passivation layer cannot be destroyed during the hole transport layer deposition because of its low solubility in chlorobenzene.

Ammonia for post-healing of formamidinium-based Perovskite films.

Solvents employed for perovskite film fabrication not only play important roles in dissolving the precursors but also participate in crystallization process. High boiling point aprotic solvents with O-donor ligands have been extensively studied, but the formation of a highly uniform halide perovskite film still requires the participation of additives or an additional step to accelerate the nucleation rate. The volatile aliphatic methylamine with both coordinating ligands and hydrogen protons as solvent or post-healing gas facilitates the process of methylamine-based perovskite films with high crystallinity, few defects, and easy large-scale fabrication as well.

Pressure-Assisted Space-Confinement Strategy to Eliminate PbI in Perovskite Layers toward Improved Operational Stability.

The existence of the PbI phase in the perovskite film is normally inevitable because of the easy sublimation of the organic component during the crystallization process under a relatively high annealing temperature. However, excess PbI will cause significant degradation on open current voltage () and fill factor (FF) under continuous illumination. Here, we developed a pressure-assisted space-confinement (PASC) method to enhance the phase purity of the perovskite film fabricated by the two-step spin-coating method.

Polyacrylonitrile-Coordinated Perovskite Solar Cell with Open-Circuit Voltage Exceeding 1.23 V.

In solution-processed organic-inorganic halide perovskite films, halide-anion related defects including halide vacancies and interstitial defects can easily form at the surfaces and grain boundaries. The uncoordinated lead cations produce defect levels within the band gap, and the excess iodides disturb the interfacial carrier transport. Thus these defects lead to severe nonradiative recombination, hysteresis, and large energy loss in the device.

Bisexual Behaviors, HIV Knowledge, and Stigmatizing/Discriminatory Attitudes among Men Who Have Sex with Men.

Objective: To assess the correlates for bisexual behaviors, HIV knowledge, and HIV/AIDS-related stigmatizing/discriminatory attitudes among men who have sex with men (MSM).

Methods: A cross-sectional survey among MSM was conducted in 2011 to provide demographics, sexual behaviors, HIV knowledge, HIV/AIDS-related stigmatizing/discriminatory attitudes, and services in Jinan, Qingdao, and Yantai of Shandong Province of China.

Results: Of 1230 participants, 82.

[Analysis of antiviral therapy HIV/AIDS children from Shandong province].

Objective: To analyze the outcome among HIV-infected children following antiretroviral treatment in Shandong province.

Methods: From the national AIDS antiviral treatment database during April 2009 and December 2013, 50 children who were according to antiviral treatment in Shandong province were classified as the cases. Regular follow-up observation and test were conducted among children under antiretroviral therapy before treatment,0.

[A retrospective cohort study on survival time of AIDS death cases receiving Antiretroviral Therapy and related factors].

Objective: To analyze survival time of AIDS death cases receiving Antiretroviral Therapy and related factors.

Methods: A retrospective cohort study was carried out to collect the data on death cases receiving Antiretroviral Therapy by the National HIV/AIDS Comprehensive Response Information Management System. Kaplan-Meier was used to calculate the median survival time, and compare survival time among different groups of age, sex, marriage status, infectious routes, WHO clinical stage, baseline CD4(+)T cell counts, and interval time from the start of ART to HIV confirmation.

An integrated individual, community, and structural intervention to reduce HIV/STI risks among female sex workers in China.

Background: We assessed the effectiveness of an integrated individual, community, and structural intervention to reduce risks of HIV and sexually transmitted infections (STIs) among female sex workers (FSWs).

Methods: The integration individual, community, and structural intervention was implemented from 2004 to 2009 in six counties of Shandong Province. Post-intervention cross-sectional surveys were conducted in six intervention counties and 10 control counties.

The effectiveness of prenatal serum biomarker screening for neural tube defects in second trimester pregnant women: a meta-analysis.

Background: Neural tube defects (NTDs) are common and serious birth defects all over the world. Prenatal screening for NTDs using maternal serum alpha-fetoprotein (MSAFP) during the second trimester of pregnancy has been widely used, but its effectiveness remains unclear.

Methods: We evaluated the studies published in the English and Chinese on MSAFP screening for NTDs.