Fluorine-Directed Structure-Specific Carbon Nanothreads.

Carbon nanothread (CNTh) is a sp-bonded one-dimensional nanomaterial that was predicted to combine the extreme strength with excellent flexibility. However, the reported CNTh usually has a nonuniform intrathread structure, and the synthesis of structure-specific CNTh is still a big challenge. Here, we selected 1,2,3-trifluorobenzene (1,2,3-TFB) with strong dipole as a precursor.

Ordered Graphane Nanoribbons Synthesized via High-Pressure Diels-Alder Polymerization of 2,2'-Bipyrazine.

Graphane shares the same two-dimensional honeycomb structure of graphene, but its saturated carbon skeleton gives rise to a bandgap and therefore provides more possibilities for the development of novel carbon-based semiconductors. However, the hydrogenation of graphene usually leads to disordered and incompletely hydrogenated graphane, and the precise synthesis of graphane with a specific configuration is still very challenging. Here, we synthesized a crystalline graphane nanoribbon (GANR) via pressure-induced polymerization of 2,2'-bipyrazine (BPZ).

Effects of Exercise on Arterial Stiffness: Mechanistic Insights into Peripheral, Central, and Systemic Vascular Health in Young Men.

Background/objectives: Arterial stiffness, a critical predictor of cardiovascular events, varies regionally across peripheral, central, and systemic arteries, necessitating targeted exercise interventions for young men. However, research on the effects of exercise on arterial stiffness in these regions among young men remains limited. This review aims to (i) examine the effects of exercise on arterial stiffness in young men across these regions, and (ii) investigate the underlying mechanisms involved.

Synthesis of a biphenylene nanoribbon by compressing biphenylene under extreme conditions.

Nonbenzenoid graphene nanoribbons such as biphenylene networks have gained increasing attention owing to their promising electronic and transport properties, but their scalable synthesis is still a huge challenge. Pressure-induced topochemical polymerization is an effective method to assemble molecular units into extended carbon materials, and the structure and properties of the carbon material can be tuned by modifying its molecular precursors. Herein, by directly compressing biphenylene at room temperature, we successfully synthesized crystalline biphenylene nanoribbons in milligram scale.

Preoperative Intravenous Carbazochrome Sodium Sulfonate Improves Visual Clarity in Patients Undergoing Arthroscopic Rotator Cuff Repair Compared to Tranexamic Acid and Sodium Chloride: A Randomized Controlled, Triple-Blinded, Prospective Study.

Purpose: To investigate the clinical efficacy of intravenous carbazochrome sodium sulfonate (CSS), an oxidation substance of epinephrine, in improving visual clarity (VC), perioperative hemostasis, and anti-inflammatory effects during arthroscopic rotator cuff repair.

Methods: This was a single-center, single-surgeon, randomized, controlled, triple-blinded, prospective study. Between August 2023 and August 2024, 195 patients undergoing arthroscopic rotator cuff repair were enrolled and randomly assigned to 1 of 3 groups: Group A received an intravenous infusion of CSS; group B received an intravenous infusion of tranexamic acid; and group C received an intravenous infusion of 0.

High-Pressure Polymerization of Phenol toward Degree-4 Carbon Nanothread.

Saturated sp-carbon nanothreads (CNTh) have garnered significant interest due to their predicted high Young's modulus and thermal conductivity. While the incorporation of heteroatoms into the central ring has been shown to influence the formation of CNTh and yield chemically homogeneous products, the impact of pendant groups on the polymerization process remains underexplored. In this study, we investigate the pressure-induced polymerization of phenol, revealing two phase transitions occurring below 0.

Pressure-induced polymerization of 1,4-difluorobenzene towards fluorinated diamond nanothreads.

Pressure-induced polymerization (PIP) of aromatic molecules has emerged as an effective method for synthesizing various carbon-based materials. The selection of suitable functionalized molecular precursors is crucial for obtaining the desired structures and functions. In this work, 1,4-difluorobenzene (1,4-DFB) was selected as the building block for PIP.

Alterations in articular cartilage frictional properties in the setting of acute gouty arthritis.

The tribological behaviour of articular cartilage plays a key role in joint motion; however, there is a gap in research on the effect of hyperuricemic joint fluid on cartilage friction behaviour in acute gouty arthritis. In this study, we carried out a fixed-load scratch experiment to compare the friction and wear of articular cartilage under the lubrication of gouty arthritis arthritic fluid and normal human arthritic fluid, and the results showed that the cartilage friction coefficient of patients with acute gouty arthritis was significantly larger than that of normal human beings, and that the cartilage friction coefficient decreased with the elevation of normal load and sliding speed, and the change with the sliding speed varied more differently from that of normal human beings, and that the cartilage surface wear was more severe after prolonged friction. The wear and tear of the cartilage surface is more severe after prolonged friction.

Piezovoltaics from PdH.

Metal hydrides have wide applications in energy science. A large pressure gradient propels the hydrogen atoms out. A piezovoltaic device, a pressure gradient-driven battery, can therefore be realized when the migrations of protons and electrons are separated by different conductors.

Outcomes of total hip arthroplasty with a standard prosthesis for the affected hip in patients with poliomyelitis sequelae: a mid-term retrospective follow-up study.

Introduction: Total hip arthroplasty for poliomyelitis sequelae could be a technical challenge due to the higher risk for prosthetic dislocation and degenerative changes in the affected limbs. This study aimed to analyse the mid-term outcomes of primary total hip arthroplasty on the affected hip with standard prosthesis.

Materials And Methods: From January 2008 to January 2018, 32 patients with poliomyelitis sequelae underwent total hip arthroplasty on the affected hip with standard prosthesis.

From Biomass to Functional Crystalline Diamond Nanothread: Pressure-Induced Polymerization of 2,5-Furandicarboxylic Acid.

2,5-Furandicarboxylic acid (FDCA) is one of the top-12 value-added chemicals from sugar. Besides the wide application in chemical industry, here we found that solid FDCA polymerized to form an atomic-scale ordered sp-carbon nanothread (CNTh) upon compression. With the help of perfectly aligned π-π stacked molecules and strong intermolecular hydrogen bonds, crystalline poly-FDCA CNTh with uniform -configuration was obtained above 11 GPa, with the crystal structure determined by Rietveld refinement of the X-ray diffraction (XRD).

Crystalline CNH tube (3,0) nanothreads.

Carbon nanothread (CNTh) is a “one-dimensional diamond polymer” that combines high tensile strength and flexibility, but it severely suffers from intrathread disorder. Here, by modifying the reactivity and the stacking ordering of the aromatic precursor, crystalline C3N3H3 CNTh with perfect hexagonal orientation and stacking was synthesized at 10.2 GPa and 573 K from s-triazine.