Intermediate-volatility aromatic hydrocarbons from the rubber products industry in China.

As key components of intermediate-volatility organic compounds (IVOCs), intermediate-volatility aromatic hydrocarbons (IAHs) are important precursors of ozone and secondary organic aerosol (SOA). Rubber products (RP) industry has significant influence on ozone and SOA formation, yet few studies are available to characterize their emissions of IAHs. Here we conducted measurements of IAHs emitted from rubber products (RP) factories in China.

Effects of diabetes/hyperglycemia on peri-implant biomarkers and clinical and radiographic outcomes in patients with dental implant restorations: A systematic review and meta-analysis.

Objective: The objective of this study is to systematically analyze the effects of diabetes mellitus/hyperglycemia (DM/HG) on peri-implant biomarkers and clinical and radiographic outcomes in patients undergoing implant treatment.

Materials And Methods: PubMed, Embase, and the Cochrane Central Register of Controlled Trials databases were searched up to March 2022. Studies reporting on peri-implant biomarkers, and clinical and radiographic outcomes in patients with different glycemic status levels (HbA1c) were included.

Risk of bleeding with dental implant surgery in patients on anticoagulant or antiplatelet drugs: a systematic review and meta-analysis.

Introduction: A large number of patients under oral anticoagulant (OAC) or antiplatelet (AP) therapy require dental implantation. We systematically reviewed evidence on the risk of bleeding after implant placement with continued OAC or AP therapy.

Methods: PubMed, Embase and CENTRAL were searched for studies comparing bleeding outcomes after implant placement between OAC/AP therapy .

Spatial-temporal evolution of agricultural ecological risks in China in recent 40 years.

Excessive use of agricultural chemicals and unreasonable utilization of agricultural wastes have led to severe agricultural non-point source pollution (ANPSP) problems in China. Based on the agricultural pollution loads and pollution control strength, the ecological risk index (ERI) was constructed and was used to explore the spatial-temporal pattern of agricultural ecological risks in China during 1978-2017. The findings indicated that Chinese agricultural ERI was gradually increased from 0.

How to reconcile land use conflicts in mega urban agglomeration? A scenario-based study in the Beijing-Tianjin-Hebei region, China.

With the development of global urbanization, land use conflicts have become one of the major issues hindering sustainable land use and human-environment coordination in urbanized areas. In this context, reconciliation of land use conflicts requires urgent attention. By taking the Beijing-Tianjin-Hebei (BTH) urban agglomeration as a case study area, the spatial comprehensive conflict index (SCCI) was constructed to identify and evaluate land use conflicts.

Exploring the eco-efficiency of cultivated land utilization and its influencing factors in China's Yangtze River Economic Belt, 2001-2018.

Rapid urbanization in China has worsened the sustainable utilization of limited cultivated land resources, which seriously threatens food security and ecological security. To realize maximum benefits and minimize environmental pollution, the eco-efficiency of cultivated land utilization (ECLU) is becoming a vital indicator in weighing the rationality of regional land use. However, conceptualization of the ECLU remains lacking, while assessments of this indicator are still incomplete.

Assessment and analysis of agricultural non-point source pollution loads in China: 1978-2017.

China's successful agriculture development has resulted in public concerned environmental problems. However, continuous and detailed data about Chinese agricultural non-point source pollution (ANPSP) loads are lacking. To assess and analyze Chinese ANPSP loads from 1978 to 2017, an inventory analysis was performed, and a socioeconomic and spatiotemporal analysis in the scale of provinces was conducted.

Talin2 regulates invasion of human breast cancer MDA-MB-231 cells via alteration of the tumor microenvironment.

The talin proteins are a key component of the extracellular matrix-integrin-cytoskeleton system, and our previous study suggested that talin2 contributes to the tumor invasion and metastasis processes regulated by the tumor microenvironment. In the present study, the specific effects of talin2 on the invasive ability of breast cancer cells, as well as the underlying mechanism, were investigated by creating two MDA-MB-231 cell lines with stable talin2 knockdown by specific RNA interference. Initially, it was confirmed that the expression levels of talin2 in human breast cancer tissues were upregulated compared with in normal adjacent tissues.

A novel and efficient synthetic route to perfluoroisobutyronitrile from perfluoroisobutyryl acid.

A novel synthetic route to perfluoroisobutyronitrile from perfluoroisobutyryl acid which has mild conditions and low toxicity is described. This study introduces detailed synthetic protocols and characterization including GC-MS, C NMR and F NMR spectroscopy of perfluoroisobutyryl acid, perfluoroisobutyryl chloride, perfluoroisobutyl amide and perfluoroisobutyronitrile. Besides, this route is superior to the established patent and shows potential application in high voltage electrical equipment.

Antitumor activity of recombinant RGD-IFN-α2a-core fusion protein in vitro.

Interferon (IFN) regulates immune responses and antitumor activity. Arginine-glycine-aspartic acid (RGD) peptides can specifically bind to integrin αvβ3, a transmembrane receptor that is highly expressed on the surface of various cancer cells. In this study, we expressed recombinant RGD-IFN-α2a-core fusion proteins and assessed their antitumor activity in vitro.

Real time analysis of lead-containing atmospheric particles in Beijing during springtime by single particle aerosol mass spectrometry.

Using a single particle aerosol mass spectrometer (SPAMS), the chemical composition and size distributions of lead (Pb)-containing particles with diameter from 0.1 μm to 2.0 μm in Beijing were analyzed in the spring of 2011 during clear, hazy, and dusty days.

Development of a time-resolved fluoroimmunoassay of CFP-10 for rapid diagnosis of tuberculous pleural effusion.

Tuberculous pleural effusion is the second most common form of extrapulmonary tuberculosis, which is very difficult to rapidly distinguish from malignant pleural effusion in the clinical setting. A time-resolved fluoroimmunoassay (TRF) of CFP-10, a low molecular weight protein secreted by pathogenic Mycobacterium tuberculosis, was developed to differentiate tuberculous pleural effusion from malignant one. The measuring range was 0.

[Land layout for lake tourism based on ecological restraint].

To avoid the decrease and deterioration of lake wetlands and the other ecological issues such as lake water pollution that were caused by the unreasonable exploration of lake tourism, a land layout for the tourism development of Liangzi Lake with the priority of ecological security pattern was proposed, based on the minimal cumulative resistance model and by using GIS technology. The study area was divided into four ecological function zones, i. e.

[Preparation and characterization of reference samples of Mycobacterium tuberculosis culture filtrate protein-10 for time-resolved fluoroimmunoassay].

Objective: To prepare reference samples of Mycobacterium tuberculosis culture filtrate protein-10 (CFP-10) and CFP10-streptavidin fusion proteins (CFP10/SA) for time-resolved fluoroimmunoassay (TRFIA).

Methods: The CFP10 gene was amplified by PCR from Mycobacterium tuberculosis strain H37Rv and cloned into pET24b, pET24b-streptavidin (SA) or pET21a-SA expression vectors. The recombinant proteins CFP10, CFP10-SA and SA-CFP10 were expressed in Rosetta cells, purified via nickel affinity chromatography and refolded by dialysis.

Evaluation of medical treatment for peripheral arterial disease in Chinese high-risk patients.

Background: Peripheral arterial disease (PAD) is an important manifestation of systemic atherosclerosis and is associated with elevated cardiovascular morbidity and mortality. The aim of the present study was to evaluate the use of antiplatelet agents, statins and angiotensin-converting enzyme inhibitors (ACEI) in Chinese high-risk cardiovascular (CV) patients with PAD, with an emphasis on the need for aggressive medical management of all atherosclerotic manifestations.

Methods And Results: Medical records from 5,263 Chinese patients at high risk of CV were evaluated for the use of antiplatelet agents, statins and ACEI in patients with and without PAD.