Carbon nanotubes (CNTs) produced by the floating-catalyst chemical vapor deposition (FCCVD) method are among the most promising nanomaterials of today, attracting interest from both academic and industrial sectors. These CNTs exhibit exceptional electrical conductivity, optical properties, and mechanical resilience due to their binder-free and low-defect structure, while the FCCVD method enables their continuous and scalable synthesis. Among the methodological FCCVD variations, aerosol CVD' is distinguished by its production of freestanding thin films comprising macroscale CNT networks, which exhibit superior performance and practical applicability.
View Article and Find Full Text PDFNanomaterials (Basel)
December 2024
Today, air pollution is a global environmental problem. A huge amount of explosive and combustible gas emissions that negatively affect nature and human health. Gas sensors are one of the ways to prevent this impact.
View Article and Find Full Text PDFA comprehensive understanding of intercellular and cell-matrix interactions is essential for advancing our knowledge of cell biology. Existing techniques, such as fluorescence microscopy and electron microscopy, face limitations in resolution and sample preparation. Supravital lanthanoid staining provides new opportunities for detailed visualization of cellular metabolism and intercellular interactions.
View Article and Find Full Text PDFVestn Oftalmol
July 2024
This study pioneers a chemical sensor based on surfactant-free aerosol-synthesized single-walled carbon nanotube (SWCNT) films for detecting nitrogen dioxide (NO). Unlike conventional CNTs, the SWCNTs used in this study exhibit one of the highest surface-to-volume ratios. They show minimal bundling without the need for surfactants and have the lowest number of defects among reported CNTs.
View Article and Find Full Text PDFPurpose: To assess the dynamic viscosity of the lacrimal sac wall in patients with various origins of lacrimal duct obstruction.
Methods: The study was performed in 35 cases: 21 cases with primary nasolacrimal duct obstruction (PANDO) and 14 cases with secondary nasolacrimal duct obstruction after radioiodine therapy (SALDO). The study of biomechanical properties of the lacrimal sac was carried out using a test bench.
Diaspididae are one of the most serious small herbivorous insects with piercing-sucking mouth parts and are major economic pests as they attack and destroy perennial ornamentals and food crops. Chemical control is the primary management approach for armored scale infestation. However, chemical insecticides do not possess selectivity in action and not always effective enough for the control of armored scale insects.
View Article and Find Full Text PDFPoly(vinyl alcohol) (PVA) physical cryogels that contained the additives of -, -, and -bis-phenols or phenol were prepared, and their physico-chemical characteristics and macroporous morphology and the solute release dynamics were evaluated. These phenolic additives caused changes in the viscosity of initial PVA solutions before their freeze-thaw processing and facilitated the growth in the rigidity of the resultant cryogels, while their heat endurance decreased. The magnitude of the effects depended on the interposition of phenolic hydroxyls in the molecules of the used additives and was stipulated by their H-bonding with PVA OH-groups.
View Article and Find Full Text PDFBackground: Frequent early postoperative complications of hemorrhoidectomy are thrombosis and edema of mucocutaneous "bridges."
Objective: This study aimed to investigate the efficacy of micronized purified flavonoid fraction in preventing complications after elective hemorrhoidectomy.
Design: Prospective unicentral open-label randomized controlled trial.
The management of thrombosed external hemorrhoids (TEH) during pregnancy is still under debate because of the fear of potential adverse effects on the fetus. This study aims to compare efficacy and safety of conservative versus surgical treatment of acute TEH in pregnant women. Furthermore, the outcome of two different surgical approaches was evaluated.
View Article and Find Full Text PDFWe propose a machine-learning interatomic potential for multi-component magnetic materials. In this potential we consider magnetic moments as degrees of freedom (features) along with atomic positions, atomic types, and lattice vectors. We create a training set with constrained DFT (cDFT) that allows us to calculate energies of configurations with non-equilibrium (excited) magnetic moments and, thus, it is possible to construct the training set in a wide configuration space with great variety of non-equilibrium atomic positions, magnetic moments, and lattice vectors.
View Article and Find Full Text PDFObjectives: Symptomatic lumbar spinal stenosis (LSS) leads to functional impairment and pain. While radiologic characterization of the morphological stenosis grade can aid in the diagnosis, it may not always correlate with patient symptoms. Artificial intelligence (AI) may diagnose symptomatic LSS in patients solely based on self-reported history questionnaires.
View Article and Find Full Text PDFPurpose: The study assesses the potential influence of refractive errors in keratoconus (KC) on the results of tomographic methods of studying the structures of the posterior eye segment.
Material And Methods: The study included 30 patients with bilateral stabilized KC of stages I-IV in classification by M. Amsler.
AlF has interesting electrophysical properties, due to which the material is promising for applications in supercapacitors, UV coatings with low refractive index, excimer laser mirrors, and photolithography. The formation of AlF-based nano- and micro-wires can bring new functionalities to AlF material. AlF nanowires are used, for example, in functionally modified microprobes for a scanning probe microscope.
View Article and Find Full Text PDFNowadays, academic research relies not only on sharing with the academic community the scientific results obtained by research groups while studying certain phenomena but also on sharing computer codes developed within the community. In the field of atomistic modeling, these were software packages for classical atomistic modeling, and later for quantum-mechanical modeling; currently, with the fast growth of the field of machine-learning potentials, the packages implement such potentials. In this paper, we present the MLIP-3 package for constructing moment tensor potentials and performing their active training.
View Article and Find Full Text PDFPurpose: To provide real-life data on azole treatment outcomes and the role of surgery in the current management of invasive fungal rhinosinusitis complicated by orbitocranial fungal infection (OCFI).
Methods: Data was collected retrospectively from a chart review from four participating centers and a systematic literature review. The study group included patients with OCFI treated with azole antifungals.
is a widespread pest of that causes significant damage to world floriculture. Chemical insecticides and biological methods of control have a number of disadvantages that can be improved by using oligonucleotide insecticides. In this article, we present, for the first time, the results of using oligonucleotide insecticides, for which the target sequence is an internal transcribed spacer (ITS) in a polycistronic rRNA transcript.
View Article and Find Full Text PDFClimate change creates favourable conditions for the growth of insect populations. Today, the world is seeing an increase in the number of insect pest infestations associated with a long-term increase in the average temperature of climatic systems. For example, local invasions of Maskell, a citrus pest recognized worldwide, have increased in size and number in recent years.
View Article and Find Full Text PDFWas to assess the possibility of using chemical analysis of bone mineral content by the means of an energy dispersive X-Ray spectroscopy to determine the age of unidentified corpses for forensic identification. A semi-quantative chemical microanalysis of bone fragments of 85 male and female corpses aged between 21 and 91 was done through the use of energy dispersive X-Ray spectrometer. The association of bone tissue apatite mineral composition with age is confirmed and a formula, connecting age and chemical composition change, is proposed.
View Article and Find Full Text PDFObjective: The purpose of the study is to analyze the immediate outcomes and results of video-assisted thoracoscopic lobectomy and lung resection performed in the surgical department of the AOC between 2014 and 2018.
Methods: For the period from 2014 to 2018, 118 patients with peripheral lung cancer were operated on in the surgical department of the AOC. The following operations were performed: lobectomy in 92 cases (78%), of which: upper lobectomy, 44 (47.
Purpose: The study attempted to experimentally substantiate the possibility of using the laser activation of scleral hydropermeability (LASH) technique in glaucoma treatment by morphological evaluation of treatment outcomes.
Material And Methods: The pulsed-periodic radiation from an Er-glass fiber laser (λ=1.56 μm) was used.
Am J Clin Dermatol
November 2023
Background And Objective: The effectiveness of biologic treatments in slowing the progression of psoriatic arthritis is well established, but there is limited and conflicting evidence on their ability to prevent the development of psoriatic arthritis in patients with psoriasis. The objective of this review was to evaluate the role of biologic treatment for psoriasis in preventing or delaying subsequent psoriatic arthritis.
Methods: A literature search was performed using MEDLINE (PubMed), Embase, Web of Science, and the Cochrane Library for studies published in English from database inception to March 2022 that statistically compared the risk of psoriatic arthritis in patients aged > 16 years who were previously treated with biologic disease-modifying antirheumatic drugs or with other drugs for skin psoriasis.
Sternorrhyncha representatives are serious pests of agriculture and forestry all over the world, primarily causing damage to woody plants. Sternorrhyncha members are vectors for the transfer of a large number of viral diseases, and subsequently, the host plant weakens. Additionally, many are inherent in the release of honeydew, on which fungal diseases develop.
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