[Evolution Characteristics of PM and O and Their Synergistic Effects on Atmospheric Compound Pollution in Tangshan].

The concentrations of atmospheric pollutants PM, O, SO, NO, and CO together with the meteorological factors of temperature （）, relative humidity （RH）, wind speed, and other relevant data in Tangshan from 2015 to 2021 were collected to study the variation characteristics of PM and O at different periods in Tangshan City in the past seven years and their influencing factors, to discuss the contributions of air mass transport to PM and O pollution, and to reveal the synergistic influence mechanism of PM and O on atmospheric compound pollution by using correlation analysis and backward trajectory cluster analysis techniques. The results showed that PM concentrations in Tangshan decreased year by year from 2015 to 2021, whereas O concentration showed a unimodal trend, with the peak appearing in 2017. Both PM and O concentrations showed obvious seasonal variation trends； PM was characterized by the highest concentration in winter and the lowest concentration in summer, whereas O was characterized by the highest concentration in summer and the lowest concentration in winter.

Photosensitized covalent organic framework as a light-induced oxidase mimic for colorimetric detection of uric acid.

As large numbers of people are suffering from gout, an accurate, rapid, and sensitive method for the detection of gout biomarker, uric acid, is important for its effective control, diagnosis, and therapy. Although colorimetric detection methods based on uricase have been considered, they still have limitations as they produce toxic HO and are expensive and not stable. Here, a novel uricase-free colorimetric method was developed for the sensitive and selective detection of uric acid based on the light-induced oxidase-mimicking activity of a new photosensitized covalent organic framework (COF) (2,4,6-trimethylpyridine-3,5-dicarbonitrile-4-[2-(4-formylphenyl)ethynyl]benzaldehyde COF [DCTP-EDA COF]).

Simultaneous detection and separation of uranium based on a fluorescent amidoxime-functionalized covalent organic polymer.

To ensure the long-term sustainable development of nuclear energy as well as the prevention and control of uranium pollution, new materials that can simultaneously detect and separate uranium are still urgently needed. Herein, a new fluorescent covalent organic polymer (COP), namely HT-COP-AO, was synthesized andemployed as both the fluorescent probe and absorbent for simultaneous uranium detection and separationconsidering its excellent fluorescence property and strong uranium coordination ability. The results showed that the fluorescence of HT-COP-AO was quickly quenched by uranium within 2 min, and the limit of detection was 0.

Incidence and risk factors of postoperative delirium after pancreatic cancer surgery: a retrospective study.

Purpose: Postoperative delirium (POD) commonly occurs after major abdominal surgery and is associated with increased morbidity and mortality. There have been many studies on the relationship between POD and various surgeries, but research on POD after pancreatic cancer surgery is limited. The aim of this study was to identify the incidence and risk factors of POD after pancreatic cancer surgery.

17 alpha-hydroxylase deficiency: A case report of young Chinese woman with a rare gene mutation.

We report a young adult woman with 17 alpha-hydroxylase deficiency (17α-OHD) in Shandong province of China. The patient carried compound heterozygous mutations in the CYP17A1 gene: c.985-987 delinsAA (p.

The influence of sedentary behaviour on mental health among children and adolescents: A systematic review and meta-analysis of longitudinal studies.

Background: Systematic reviews that have examined associations between sedentary behaviour (SB) and mental health among children and adolescents are mainly based on cross-sectional investigations. There is a lack of evidence for a prospective relationship between SB and mental health in children and adolescents. This systematic review synthesized longitudinal studies that examined prospective associations between SB and mental health among children and adolescents.

[Precipitation and Its Effects on Atmospheric Pollutants in a Representative Region of Beijing in Summer].

Atmospheric precipitation samples were collected in a representative region of Beijing in summer of 2015 to investigate the physical and chemical characteristics of atmospheric precipitation, the changes and causes of major chemical components in rainwater during the course of typical precipitation, and the impacts of typical precipitation processes on atmospheric pollutants. The volume-weighted mean pH value of rainwater in the representative region of Beijing in summer was 6.21 with the range of 5.

[Characteristics of C2-C6 Hydrocarbons During the Winter Air Pollution Period in Beijing Urban Area].

A C2-C6 hydrocarbons monitoring campaign was carried out in the Beijing Southeastern Urban Area during December 2015. Twenty-five compounds excluding benzene were detected by an on-line VOCs analyzer; the sum of their concentrations is referred to as C2-C6 HCs in this study. During the monitoring period, C2-C6 HCs ranged from 12.

[Atmospheric Pollutant Emission Characteristics from the Cooking Process of Traditional Beijing Roast Duck].

As one of the characteristics of traditional food in Beijing, there is a significant difference between roast duck and other foods in the cooking process, in that fruit trees are used as fuel in the former. However, system research about the emission characteristics of this food source has not been done domestically. In order to grasp such food source emission characteristics and provide technical basis for pollution control, we selected the representative roast duck restaurant in Beijing and studied the emission characteristics of atmospheric pollutants in the cooking process of roast duck.

The influence of physical activity, sedentary behavior on health-related quality of life among the general population of children and adolescents: A systematic review.

Background: The association between physical activity, sedentary behavior and health-related quality of life in children and adolescents has been mostly investigated in those young people with chronic disease conditions. No systematic review to date has synthesized the relationship between physical activity, sedentary behavior and health-related quality of life in the general healthy population of children and adolescents. The purpose of this study was to review systematically the existing literature that evaluated the relations between physical activity, sedentary behavior and health-related quality of life in the general population of children and adolescents.

[Finite element analysis of the angulation designment of implant planning in the anterior maxilla].

Purpose: To provide theoretical reference for maxillary anterior restoration designment in clinics by observing the masticatory stress distribution of the implant-bone interface and the displacement of implant.

Methods: This study built simplified 3 dimensional finite models with different angles, which included partial implant (4.3 mm×11.

[Determination of arsenic speciation in Scomberomorus niphonius by capillary electrophoresis-inductively coupled plasma mass spectrometry].

A method for the detection of arsenocholine (AsC), arsenobetaine (AsB), As(III), dimethylarsinic (DMA), monomethylarsonic (MMA) and As (V) by capillary electrophoresis-inductively coupled plasma mass spectrometry (CE-ICP-MS) was established. The results showed that the six species of arsenic were separated within 20 min under the optimized conditions. Good linearities of 6 arsenic species were observed in the range from 2 to 50 μg x L(-1) with the linear correlation greater than 0.

E-cadherin promotes proliferation of human ovarian cancer cells in vitro via activating MEK/ERK pathway.

Aim: E-cadherin is unusually highly expressed in most ovarian cancers. This study was designed to investigate the roles of E-cadherin in the carcinogenesis and progression of ovarian cancers.

Methods: Human ovarian adenocarcinoma cell line SKOV-3 was examined.

[Histologic analysis and long-term effect of acellular dermal matrix combined with autologous thin split-thickness skin graft].

Objective: To evaluate the long-term therapeutic effect and histologic result of ADM combined with autologous thin split-thickness skin graft.

Methods: 23 patients were treated with acellular dermal matrix (ADM) combined with autologous thin split-thickness skin graft. The patients were followed up at 3, 6, 12, and 18 months after operation.

[Characteristics of re-suspended road dust and its significant effect on the airborne particulate pollution in Beijing].

The re-suspended road dust samples from 53 sites that could cover basically the entire Beijing in summer, and aerosol samples from three representative sites in Beijing in four seasons were collected to study concentrations and spatial variations of elements and ions in resuspended road dust and its contribution to the air-borne particulate pollution. Ca, S, Cu, Zn, Ni, Pb and Cd were main pollution elements, and Ca2+, SO4(2-), Cl-, K+, Na+ and NO3- were major ions in re-suspended road dust. Al, Ti, Sc, Co and Mg in re-suspended road dust were mainly originated from crustal source, while Cu, Zn, Ni and Pb were mainly originated from traffic emissions and coal burning, and Fe, Mn and Cd were mainly from industrial emissions and coal combustion.

Blockade of TRAIL pathway ameliorates HBV-induced hepatocyte apoptosis in an acute hepatitis model.

Tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) may play important roles during hepatitis B virus (HBV) infection. In this study, we used a recombinant human soluble death receptor 5 (sDR5) to explore its effect in a mouse model of HBV-induced acute hepatitis. By measuring blood transaminase activity and hepatocyte apoptosis, we found that sDR5 could alleviate liver damage by blocking TRAIL-induced apoptosis of HBV-transfected hepatocytes.

Caspase family proteases and apoptosis.

Apoptosis, or programmed cell death, is an essential physiological process that plays a critical role in development and tissue homeostasis. The progress of apoptosis is regulated in an orderly way by a series of signal cascades under certain circumstances. The caspase-cascade system plays vital roles in the induction, transduction and amplification of intracellular apoptotic signals.

Effect of NS-398 on colon cancer cells.

Aim: To study the effect of NS-398, a selective cyclooxygenase-2 (COX-2) inhibitor, on invasion of colon cancer cell line HT-29 in vitro and to explore its mechanisms.

Methods: Invasive behaviors of the malignant colon cancer cell line HT-29 were investigated in this study. Expressions of COX-2 and CD44v6 in HT-29 cells were detected by flow cytometry.

Antisense oligonucleotide targeting at the initiator of hTERT arrests growth of hepatoma cells.

Aim: To evaluate the inhibitory effect of antisense phosphorothioate oligonucleotide (asON) complementary to the initiator of human telomerase catalytic subunit (hTERT) on the growth of hepatoma cells.

Methods: The as-hTERT was synthesized by using a DNA synthesizer. HepG2.

[Inhibition of HBV DNA replication and expression in 2.2.15 hepatoma cells infected with AFP-mediated HBX antisense RNA].

Objective: To study the specific expression of the antisense RNA against hepatitis B virus X (HBX) gene in hepatoblastoma cell line and its anti -HBV activity.

Methods: HBX gene (nt.1370-1827) was amplified by PCR, then cloned into EB virus vector pEBAF which contained human alpha-fetoprotein promoter and enhancer.

Therapeutic effects of the levonorgestrel-releasing intrauterine system in the treatment of idiopathic menorrhagia.

Objective: To investigate the effect of the levonorgestrel-releasing intrauterine system (LNG-IUS) in the treatment of idiopathic menorrhagia.

Design: Measurements of menstrual blood loss (MBL), hemoglobin, and serum ferritin before and after LNG-IUS insertion.

Setting: National Research Institute for Family Planning and Beijing Gynecology and Obstetrics Hospital, Beijing, People's Republic of China.