[Transformation Behavior and Environmental Effects of Microplastics in Soil-groundwater].

As an emerging pollutant, microplastics exist widely in the environment. At present, the research on microplastics mainly focuses on the atmosphere, ocean, river, and other environmental media. Soil-groundwater has become a significant sink and has received increased interest in recent years.

The effects of extracellular matrix-degrading enzymes polymorphisms on intervertebral disc degeneration.

Objective: The objective of the current study was to investigate the correlation between polymorphisms in extracellular matrix-degrading enzymes and the risk of intervertebral disc degeneration (IDD) diseases.

Methods: The databases PubMed, Embase, and Cochrane Database were systematically queried from the inception until March 2023 to ascertain studies that meet the eligibility criteria. Utilizing a standardized data collection form to extract data from individual studies.

Air activation of charcoal monoliths for capacitive energy storage.

Charcoal monoliths derived from waste wood were activated with air for the application of electrochemical capacitor electrodes and an insight was given into the activation mechanism. The mild air activation is effective and pollution-free compared to the common chemical activation using KOH for the preparation of crack-free carbon monoliths. The activation process was controlled by altering the activation temperature and time, and their effects on the nanostructure of charcoal monoliths were studied.

Lipoprotein A, combined with alanine aminotransferase and aspartate aminotransferase, contributes to predicting the occurrence of NASH: a cross-sectional study.

Background: Nonalcoholic steatohepatitis (NASH) progresses from simple nonalcoholic fatty liver (NAFL) and has a poor prognosis. Abnormal lipid metabolism is closely related to the occurrence and development of nonalcoholic fatty liver disease (NAFLD). This study aimed to study the relationships between serum lipid metabolites and NASH, and to improve the early diagnosis of NASH.

Effects of silica sol on the microstructure and mechanical properties of CaSiO3 bioceramics.

CaSiO3 ceramics were fabricated with silica sol addition by pressureless sintering. The effects of silica sol on phase composition, microstructure and mechanical properties of CaSiO3 ceramics were investigated. The silica sol additive was found to be effective in speeding up pore elimination, improving the grain growth, decreasing the sintering temperature and shortening the sintering time.

MRI findings in primary vaginal melanoma-a report of four cases.

Primary vaginal melanoma is a rare malignant tumor. We review the clinical presentation and magnetic resonance imaging (MRI) appearances of this entity in four patients. The MRI findings in vaginal melanoma are various and may be confused with other malignant vaginal tumor.

Computed tomography and magnetic resonance imaging findings of malignant solid pseudopapillary tumors of the pancreas with macroscopic venous tumor thrombosis: a report of 4 cases.

Purpose: The purpose of this study was to report the imaging findings of malignant pancreatic solid pseudopapillary tumors (SPTs) with macroscopic venous tumor thrombi.

Methods: The clinical features and imaging findings of 4 cases of malignant pancreatic SPT with venous tumor thrombi were retrospectively reviewed.

Results: The tumor thrombi were located in the splenic vein (n = 3) or the main portal vein and the proximal splenic vein (n = 1).

Synthesis and magnetic property of iron ions-doped hydroxyapatite.

Magnetic Hydroxyapatite (HAP) particles were successfully synthesized at different concentration of Fe2+ by a co-precipitation method. The influences of concentration of doped ions and calcination temperature on the morphology and magnetic property were studied. The iron ions-doped HAP still kept its structure similar to conventional HAP and no second phases were detected.

Effect of polyvinyl alcohol additive on the pore structure and morphology of the freeze-cast hydroxyapatite ceramics.

Porous hydroxyapatite (HAP) ceramics with different morphologies were fabricated by the freeze casting method. The morphologies of HAP ceramics were modified by adjusting the concentration of polyvinyl alcohol (PVA) additive in the HAP slurries. HAP ceramics without PVA additive were composed of non-interconnected macroscopic lamellar pores and porous ceramic walls.