Abstract Natural rubber (NR)–clay (clay is montmorillonite) and chloroprene (CR)–clay nanocomposites were prepared by co‐coagulating the latex clay aqueous suspension. Transmission electron microscopy showed that layers of dispersed in NR matrix at a nano level, aspect ratio (width/thickness) platelet inclusions was reduced aligned more orderly during compounding operation on an open mill. However, X‐ray diffraction indicated there some nonexfoliated matrix. Stress–strain curves moduli...

Purpose: Early diagnosis and therapy are critical to improve the prognosis of patients with pancreatic cancer. However, conventional imaging does not significantly increase capability detect early stage disease. In this study, we developed a multifunctional theranostic nanoplatform for accurate effective treatment Methods: We nanoparticle (NP) based on gold nanocages (AuNCs) modified hyaluronic acid (HA) conjugated anti-Glypican-1 (anti-GPC1) antibody, oridonin (ORI), gadolinium (Gd), Cy7...

Background: Pancreatic cancer (PC) remains a difficult tumor to diagnose and treat. It is often diagnosed as advanced by reason of the anatomical structure deep retroperitoneal layer pancreas, lack typical symptoms effective screening methods detect this malignancy, resulting in low survival rate. Emodin (EMO) an economical natural product with treatment few side effects treatment. Magnetic nanoparticles (MNPs) can achieve multiplexed imaging targeted therapy loading wide range functional...

Abstract Summary: Based on the fact that rubber can be chemically modified by sulfur, and sulfur diffuse into driven a concentration gradient chemical reaction, new approach for preparation of polymer with from rubbery to glassy phase has been developed using sulfur‐vulcanization reaction rubber. The obtained exhibits wide transition range spanning over 100 °C peak half‐width 69 °C. mechanism forming structure is also discussed. broad tan δ width −60 76 about °C, indicating damping...

Though the non-rubber components have long been recognized to be a vital factor affecting network of natural rubber (NR), authentic role on during accelerated storage has not fully illuminated. This work attempts clarify impact for NR storage. A model was proposed based gel content, crosslinking density, and distribution before after centrifugation. Furthermore, effect investigated The results show that terminal induced by entanglements are primary factors formation By applying tube analyze...

Abstract The Bovine jugular vein (BJV) graft for right ventricular outflow tract reconstruction (RVOT) is limited applied due to possible failure. In this study, we reported the clinical application of simplified hand‐sewn trileaflet valved conduit as an alternative BJV graft. We retrospectively included 68 patients underwent 76 conduits implantation including 22 new (Group A) and 54 grafts B). For in Group A, a with valves made autologous pericardium or expanded polytetrafluoroethylene was...

Abstract Expanded polytetrafluoroethylene (ePTFE) prosthetic valves have been widely used in clinical applications Asian countries. However, these still limits with regard to thrombosis, neointimal hyperplasia, restenosis, and valvar vegetation. The achievement of situ endothelialization on implant materials is a promising way overcome those limits. Here, heparin/collagen multilayers were fabricated ePTFE films via layer‐by‐layer (LBL) self‐assembly technique, then, the endothelial cell (EC)...

Abstract In this study, continuous SiC‐ZrB 2 composite ceramic fibers were synthesized from a novel pre‐ceramic polymer of polyzirconocenecarbosilane (PZCS) via melt spinning, electron beam cross‐linking, pyrolysis, and finally sintering at 1800°C under argon. The ZrB particles with an average grain size 30.7 nm found to be uniformly dispersed in the SiC mean 59.7 nm, as calculated using Scherrer equation. polycrystalline exhibit dense morphologies without any obvious holes or cracks....

W is a widely used refractory metal with ultra-high melting point up to 3410 °C. However, its applications are limited by poor ablation resistance under high-temperature flame and air flow, which crucial for aerospace vehicles. To improve the of extreme conditions, W-Y alloys doped different Hf mass fractions (0, 10, 20, 30) were prepared using fast hot pressing sintering method. Microstructure behaviours at 2000 °C investigated. Results showed that adding an appropriate amount improved...

Hexagonal boron nitride (h-BN) particles were added to a sliver metal matrix improve the tribological properties of prepared Ag–BN coatings, which deposited via plasma spraying technique. The morphology, flowability and apparent density composite powders characterized, as well phase composition, microstructure friction coatings systematically investigated. Results XRD showed that successfully prepared, morphologies SEM dense structures coatings. wear behaviour was investigated from ambient...

To accurately assess the hemolysis risk of ventricular assist device, this paper proposed a cell destruction model and corresponding evaluation parameters based on multiphase flow. The single-phase flow in two patient-specific total cavopulmonary connection structures assisted by rotationally symmetric blood pump (pump-TCPC) were simulated. Then, models used to evaluate risk. results both indicated that straight pump-TCPC was lower than curved model. However, average maximum values damage...

HfO2 has become a promising thermal barrier coating material due to its similarity in structure and chemical properties with ZrO2 higher phase transition temperature. However, the fracture toughness of is not ideal, greatly limiting application. In this report, we find special sandwich ceramics, comprising cubic (C) /monoclinic (M) phase/cubic phase. The microstructural evolution mechanical these ceramics were investigated under annealing at 1500 °C. results indicate that, an increase...

This article details a method for preparing cermet matrix composites via Fast hot pressing (FHP) sintering technology and emphasizes their potential use in extremely high-temperature settings. The material primarily consists of NiCr alloy, Cr3C2, LaF3. An in-depth investigation was conducted on the tribological properties specimen by conducting sliding tests against Si3N4 ball at varying temperatures, including room temperature (RT), 400 °C, 600 800 °C. Advanced techniques such as scanning...

The incidence of androgenetic alopecia in males is on the rise annually, with hair transplantation using follicular unit extraction (FUE) gaining increasing acceptance as an appropriate treatment for these individuals. A retrospective study was undertaken, involving 158 male patients diagnosed alopecia, who underwent between January 2016 and December 2020 at Medical Cosmetology Department First Affiliated Hospital Xi'an University. Demographic data characteristics were documented analyzed....

Expanded polytetrafluoroethylene (ePTFE) is commonly used in cardiovascular surgery, but usually causes postoperation complications. Although great efforts have been done to relieve these complications or understand their mechanism, there are no applicable strategies available and understanding mechanisms, especially the myocardium. Here, ePTFE membranes implanted into right ventricular outflow tract of rabbits, implant-related myocardium dissected analyzed by histology transcriptome...

Boron nitride (BN) ceramic fibers containing amounts of silicon (Si3N4) were prepared using hybrid precursors poly(tri(methylamino)borazine) (PBN) and polycarbosilane (PCS) via melt-spinning, curing, decarburization under NH3 to 1000 °C pyrolysis up 1600 N2. The effect Si3N4 contents on the microstructure BN/Si3N4 composite ceramics was investigated. Series various from 5 wt% 25 fabricated. It found that crystallization could be totally restrained when its content below in at °C, amorphous...