Post-operative complications associated with the pre-operative use of Aspirin in patients undergoing surgery for hip or femoral fracture: a meta-analysis.

Background: The number of patients with hip and femoral fractures is increasing and is expected to further increase in upcoming years due to the ageing population and the life expectancy of the general population. In this analysis, we aimed to systematically assess the post-operative complications associated with the pre-operative use of Aspirin in patients undergoing surgery for hip or femoral fracture.

Methods: Common online databases: Google Scholar, Web of Science, MEDLINE, Cochrane database, EMBASE ( www.

Enhanced Conductivity in Conjugated Microporous Polymers via Integrating of Carbon Nanotubes for Ultrasensitive NO Chemiresistive Sensor.

Conjugated microporous polymers (CMPs) present high promise for chemiresistive gas sensing owing to their inherent porosities, high surface areas, and tunable semiconducting properties. However, the poor conductivity hinders their widespread application in chemiresistive sensing. In this work, three typical CMPs (PSATA, PSATB, and PSATT) are synthesized and their chemiresistive gas sensing performance is investigated for the first time.

Etomidate Inhibits Hepatic Ischemia-Reperfusion Injury Depending on the Activation of Nrf2-HO-1 Signaling Pathway.

Hepatic ischemia-reperfusion (I/R) injury (HIRI) is recognized as a local aseptic inflammatory response driven by innate immunity and is considered a leading cause of early organ dysfunction and failure following liver transplantation. Etomidate (Eto), an anesthetic drug known for its ability to inhibit inflammatory response and apoptosis, was the focus of our investigation. In this study, we conducted hepatic I/R surgery on C57 mice, analyzing liver damage through histopathology.

Cytokine-induced killer cells-mediated chlorin e6-loaded gold nanostars for targeted NIR imaging and immuno-photodynamic combination therapy for lung cancer.

Recently, cytokine-induced killer (CIK) cells have a broad application prospect in the comprehensive diagnosis and treatment of tumors owing to their unique characteristics of killing and targeting malignant tumors. Herein, we report a facile strategy for synthesis of monodisperse gold nanostars (GNSs) based on PEGylation and co-loaded with the photosensitizer chlorin e6 (Ce6) to form GNSs-PEG@Ce6 NPs. Then employing CIK cells loading the as-prepared GNSs-PEG@Ce6 NPs to fabricate a CIK cells-based drug delivery system (GNSs-PEG@Ce6-CIK) for lung cancer.

Research on Diesel Engine Fault Status Identification Method Based on Synchro Squeezing S-Transform and Vision Transformer.

The reliability and safety of diesel engines gradually decrease with the increase in running time, leading to frequent failures. To address the problem that it is difficult for the traditional fault status identification methods to identify diesel engine faults accurately, a diesel engine fault status identification method based on synchro squeezing S-transform (SSST) and vision transformer (ViT) is proposed. This method can effectively combine the advantages of the SSST method in processing non-linear and non-smooth signals with the powerful image classification capability of ViT.

Can new-type urbanization promote the green intensive use of land?

An analysis of how new-type urbanization in China impacts the green intensive use of land not only provides us with an important reference basis, but also helps support decision-making when promoting new-type urbanization. This paper theoretically analyzes how new-type urbanization influences the green intensive use of land and takes the implementation of China's new-type urbanization plan (2014-2020) as a quasi-natural experiment. To empirically analyze the impact and mechanism of new-type urbanization on the green intensive use of land, we take the panel data of 285 Chinese cities from 2007 to 2020 and use the Difference-in-differences method.

Has green finance reform promoted green growth in Chinese industry?

Due to their ability to generate green industrial growth, green finance policies are important both in the greening of China's industries and in the promoting of further improvements to its financial system. In this paper, reform pilot zones are used as a quasi-natural experiment with select panel data from 2007 to 2019 taken from 30 provinces in China, and used the DID method to empirically measure the impact of green finance reform on industrial GTFP and its mechanism of action. The findings demonstrate that reforming green finance greatly enhances GTFP of industry during the review period.

Porous organic polycarbene nanotrap for efficient and selective gold stripping from electronic waste.

The role of N-heterocyclic carbene, a well-known reactive site, in chemical catalysis has long been studied. However, its unique binding and electron-donating properties have barely been explored in other research areas, such as metal capture. Herein, we report the design and preparation of a poly(ionic liquid)-derived porous organic polycarbene adsorbent with superior gold-capturing capability.

A Review of Fault Diagnosis Methods for Rotating Machinery Using Infrared Thermography.

At present, rotating machinery is widely used in all walks of life and has become the key equipment in many production processes. It is of great significance to strengthen the condition monitoring of rotating machinery, timely diagnose and eliminate faults to ensure the safe and efficient operation of rotating machinery and improve the economic benefits of enterprises. When the state of a rotating machine deteriorates, the thermal energy that is much more than its normal operation will be generated due to the increase in the friction between the components or other factors.

Opportunistic Maintenance Strategy for Complex Equipment with a Genetic Algorithm Considering Failure Dependence: A Two-Dimensional Warranty Perspective.

Complex two-dimensional warranty equipment is usually composed of many multi-component systems, which include several key components. During the warranty period, conducting maintenance according to the preventive maintenance plan of each component will increase the warranty costs. Opportunistic maintenance is an effective approach to combine the preventive maintenance of each individual component, which can reduce the warranty cost and improve the system availability.

Accelerated carbonate dissolution caused by anthropogenic acidification - contrast of watershed soils to lake sediments in Taihu Region, China.

Although Taihu watershed is an "acid-insensitive" region, anthropogenic acidification has greatly changed the water chemistry in Taihu Lake. However, how soil carbonates responded to the long-term human-induced acidification received less attention. In this work, we investigated soil carbonate concentrations from different land uses in the upstream of the lake and sediment carbonate profiles in the lake, to explore the linkage of carbonates dissolution in the land and sedimentation in the lake.

Macroscale Conjugated Microporous Polymers: Controlling Versatile Functionalities Over Several Dimensions.

Since discovered in 2007, conjugated microporous polymers (CMPs) have been developed for numerous applications including gas adsorption, sensing, organic and photoredox catalysis, energy storage, etc. While featuring abundant micropores, the structural rigidity derived from CMPs' stable π-conjugated skeleton leads to insolubility and thus poor processability, which severely limits their applicability, e.g.

Scalable Fabrication of Conjugated Microporous Polymer Sponges for Efficient Solar Steam Generation.

Seawater evaporation realized by solar-thermal conversion represents one of the most sustainable and effective strategies to obtain fresh water. Many approaches have been proposed to achieve high efficiencies of solar-thermal conversion, but their practical applications are limited by the low scalability. Herein, novel porphyrin/aniline-based conjugated microporous polymers (PACMPs) are synthesized a Buchwald-Hartwig coupling reaction, which are then integrated with polyurethane sponges a simple dip-coating technique.

Long non-coding RNA p53 upregulated regulator of p53 levels (PURPL) promotes the development of gastric cancer.

Gastric cancer (GC), one of the most prevalent malignancies across the world, has an increasing incidence rate. Long non-coding RNA (lncRNA) PURPL (also referred to as LINC01021) has been demonstrated to influence malignant GC behaviors and partake in other cancers. Notwithstanding, reports pertaining to the underlying mechanism of PURPL in GC haven't been rarely seen.

[Natural Water Chemistry Change in the Surface Water of Chengdu and Impact Factors].

To investigate the impact of megacities on the chemistry of surface waters, monthly sampling and monitoring were conducted in the Chengdu section of the Minjiang and Tuojiang River basin, corresponding to the upper reaches of the Yangtze River since the spring of 2019, including the influent and effluent water samples from 57 sewage treatment plants in Chengdu. All the samples were analyzed for major ions and other water chemistry parameters, and compared with the historical data of the Minjiang and Tuojiang River. The results showed that the Chengdu surface water still presented a natural chemistry with medium-low total dissolved solids(TDS), and calcium bicarbonate chemistry type, which is the natural consequence of the weathering of carbonate rocks in the basin effected by the weathering of silicates and evaporites.

Does the smart city policy promote the green growth of the urban economy? Evidence from China.

Urban governance is an important cornerstone in the modernization of a national governance system. The establishment of smart cities driven by digitalization will be a vital way to promote economic green and sustainable growth. By using the data of 274 prefecture-level cities in China from 2004 to 2017, we study the impact of smart city policy on economic green growth and the underlying mechanism of the impact.

Research on carbon emission efficiency in the Chinese construction industry based on a three-stage DEA-Tobit model.

The traditional data envelopment analysis (DEA) model usually ignores the influence of external environmental factors and random interference. This can easily lead to deviations in efficiency estimates. In order to solve this problem, a three-stage DEA model was used to better reflect the carbon emission efficiency of Chinese construction industry (CEECI) (2006-2017) from the perspective of non-management factors.

The spatial effect of fiscal decentralization on haze pollution in China.

The fiscal decentralization system under China's political centralization affects local economic and environmental policies, and thus has an important impact on environmental quality. This paper uses the panel data of 285 cities in China from 2003 to 2018 and the spatial Durbin model to empirically analyze the impact of fiscal decentralization on haze pollution and its mechanism. The results show that the increase in fiscal decentralization will significantly aggravate the haze pollution in and around the region, and this conclusion is still valid after a series of robustness tests.

[Changes in Water Chemistry and Driving Factors in the Middle and Lower Reaches of the Beijing-Hangzhou Grand Canal].

To reveal the Beijing-Hangzhou Grand Canal natural water chemistry characteristics and the influence of human activities, river samples from Xuzhou to Jiaxing were collected in 2019-2020. Simultaneously, the water chemistry data of the canal from 1959 to 1962 and 1975 to 1977 in the Suzhou, Wuxi, and Changzhou sections and the recent social and economic data of the major cities along the canal were collected and analyzed. The results showed that the type of hydrochemistry in the study area was mainly influenced by the weathering of carbonate rocks in the basin, but K+Na accounted for 40.

Solvothermal synthesis of porphyrin-ferrocenyl conjugated microporous polymer nanospheres for shape-stable phase change materials with improved latent heat and cyclability.

Organic phase change materials (PCMs) have attracted considerable attention for thermal energy storage applications because of their non-toxicity, suitable working temperature range and excellent thermal/chemical stability. However, most traditional organic PCMs have small molecular structures and are prone to leakage during fusion. To address this problem and enhance the shape-stability of organic PCMs, nanosphere-shaped porphyrin-ferrocenyl conjugated microporous polymers (PFCMPs) with high porosity (~ 650 m/g) were solvothermally synthesized using a Diels-Alder reaction between 1,1'-ferrocenedicarboxaldehyde and pyrrole in the presence of glacial acetic acid and anhydrous Lewis acids (FeCl, AlCl, and CuCl).

Clinical observation of percutaneous vertebroplasty in the treatment of osteoporotic vertebral compression fracture.

Objective: To investigate the clinical efficacy of percutaneous vertebroplasty (PVP) on osteoporotic vertebral compression fracture and relevant issues.

Methods: The data of 80 patients with osteoporotic vertebral compression fracture admitted to Orthopaedics Department, Huanggang Central Hospital from September 2013 to September 2015 was selected for analysis. The data selection was done from December 2018 to February 2019 Under local anaesthesia and C-arm X-ray fluoroscopy, percutaneous kyphoplasty was performed by puncturing into unilateral (or bilateral) pedicle(s) percutaneously and fixing with bone cement.

Tumor-derived Exosomes Induced M2 Macrophage Polarization and Promoted the Metastasis of Osteosarcoma Cells Through Tim-3.

Introduction: Osteosarcoma, the most prevalent primary malignancy of the bone, is often presented with high-grade subclinical metastatic disease that metastasizes at very early stages. Exosomes, as molecular information carriers, may play a potent role in the occurrence and development of tumors through oncogenic molecular reprogramming of tumor-associated macrophages (TAMs). In this study, we will investigate the effect of osteosarcoma-derived exosomes on the polarization of TAMs and decipher its underlying molecular mechanism.