[A multi-center epidemiological study on pneumococcal meningitis in children from 2019 to 2020].

Objectives: To investigate the clinical characteristics and prognosis of pneumococcal meningitis (PM), and drug sensitivity of (SP) isolates in Chinese children.

Methods: A retrospective analysis was conducted on clinical information, laboratory data, and microbiological data of 160 hospitalized children under 15 years old with PM from January 2019 to December 2020 in 33 tertiary hospitals across the country.

Results: Among the 160 children with PM, there were 103 males and 57 females.

[Features of intestinal flora in children with food protein-induced proctocolitis based on high-throughput sequencing].

Objectives: To study the features of intestinal flora in children with food protein-induced proctocolitis (FPIP) by high-throughput sequencing.

Methods: A total of 31 children, aged <6 months, who experienced FPIP after exclusive breastfeeding and attended the outpatient service of the Third Affiliated Hospital of Zunyi Medical University from October 2018 to February 2021 were enrolled as the FPIP group. Thirty-one healthy infants were enrolled as the control group.

A Potential Hybrid Hole-Transport Material Incorporating a Redox-Active Tetrathiafulvalene Derivative with CuSCN.

Inorganic CuSCN and organic tetrathiafulvalene derivatives (TTFs) have been exploited as hole-transport materials (HTM) in hybrid perovskite solar cells. To develop new HTM, we herein report two hybrid materials incorporating redox-active TTFs with CuSCN framework (TTFs-CuSCN). Single-crystal analysis showed that compound [Cu(py-TTF-py)(SCN)] () is three-dimensional (3D) and compound [Cu(py-TTF-py)(SCN)] () is two-dimensional (2D) (py-TTF-py = 2,6-bis(4'-pyridyl)tetrathiafulvalene).

Perfect Self-Assembling of One-Dimensional Lead Iodides with Tetrahedral CuIS Clusters: A High-Symmetry Cubic Packing.

Hybrid perovskites are attractive for their applications in photovoltaic devices. We synthesized a novel 1-D hybrid lead iodide, (tu)CuPbI, in which 1-D PbI chains are tetrahedrally orientated to form a crystal lattice with high-symmetry cubic space group Ia3̅ d (No. 230).

Intracation and Interanion-Cation Charge-Transfer Properties of Tetrathiafulvalene-Bismuth-Halide Hybrids.

Tetrathiafulvalene (TTF) derivatives as promising hole transport materials in assembling hybrid halide perovskite solar cells have attracted great attention; however, electron transfer or charge-transfer (CT) between TTF and metal halides has been studied with less detail at the molecular level. Using molecular models, we herein report four new TTF-bismuth-halides assembled by methylated or protonated bis(4'-pyridyl)-tetrathiafulvalene cations, (MePy)TTF or (HPy)TTF, and bismuth-halide anions. Single crystal analysis showed that the cations are stacked to form a TTF column, and the bismuth-halide anions are inlaid between the TTF columns with anion-cation interactions.

A Titanium Oxo Cluster Model Study of Synergistic Effect of Co-coordinated Dye Ligands on Photocurrent Responses.

The use of multiple sensitizers in dye sensitized solar cells has been attractive as a promising way to achieve highly efficient photovoltaic performance. However, except for the complementary absorption, synergistic effects among the dye components have not been well understood. Herein, using ferrocene-1-carboxylate (FcCO) and catechol (Cat) as dye ligands, two titanium oxo clusters (TOCs), [TiO(OPr)(Cat)(FcCO)] (1) and [TiO(OPr)(Cat)(FcCO)] (2), were synthesized and structurally characterized.

[Characteristics of severely and critically ill children with 2009 influenza A (H1N1) virus infection].

Objective: To analyze the clinical characteristics of severely and critically ill children with 2009 influenza A (H1N1) infection.

Method: Clinical data of 150 cases with 2009 influenza A (H1N1) virus infection confirmed with the use of a real-time polymerase-chain-reaction assay on nasopharyngeal swab specimens were analyzed.

Result: Among 150 severely and critically ill children with 2009 influenza A (H1N1) virus infection, 103 were male, 47 were female; the median age was 5 years, 81(55%) were 5 years of age or older; 21 (14%) had underlying chronic diseases.

[Digestive system manifestations in children infected with novel influenza A (H1N1) virus].

Objective: To study the digestive system manifestations in children infected with novel influenza A (H1N1) virus.

Methods: A prospective study of 153 children infected with novel influenza A (H1N1) virus in Shenzhen Children's Hospital from November 2009 to January 2010 was conducted. The clinical features and outcomes of 69 children with digestive system manifestations were analyzed.