Here are the results of the microscopic study of the shape and size of particles of 5 samples of amlodipine besylate substance of world manufacturers, registered and used in the pharmaceutical industry of Uzbekistan. Such characteristics as the size and shape of particles, as well as the crystalline state with the simultaneous photos have been evaluated. Factors of the shape of particles of the substance of the studied samples were calculated.
AIM: To analyze clinicofunctional and echobiometric indicators of the eyes in children with target refraction, pseudofacial myopia, and their mothers.
MATERIAL AND METHODS: In the eye department of the clinic of the Tashkent Pediatric Medical Institute, a correlation analysis of optical and echobiometric indicators was conducted in 30 children (30 eyes) with artifakia and their mothers (60 eyes). Visiometry, keratorefractometry, and ultrasound examination (A/В scan of the eyeball) were conducted. Children were examined 12-14 months after CC extraction with intraocular lens (I0L) implantation.
RESULTS: A strong direct correlation was determined between the optical power of lOLs in children and their mothers who were theoretically planned for I0L implantation of lOLs in the group that has achieved target refraction. This may indicate the possibility that the child has the same optical power as the mother and the optical power of lOLs in a child is the same as that in adults. No correlation was found between the optical power of the I0L in the eyes of children with pseudophakic myopia and maternal artificial lenses theoretically planned for implantation.
CONCLUSION: The direct strong correlations between the optical power of the I0L of children and the lenses of their mothers in the group with the target refraction achieved by this age make it possible to use the optical power of maternal lenses as a “guideline" when calculating the power of the I0L implanted in children to achieve the target refraction. The lack of correlation between the refractive powers of the I0L in children with pseudophakic myopia and the lenses of mothers may indicate that the SRKII formula with age-related hypocorrection is not adapted to calculate the I0L power in children at risk of excessive refractive enhancement after surgery.
Nanocarbon particles, such as carbon nanotubes and graphene, have gained significant attention due to their unique properties and potential applications in various fields, including thermal management and nanofluid-based heat transfer. Understanding the thermophysical properties of nanocarbon particles dispersed in different base fluids is crucial for optimizing their performance in thermal applications. This study presents a comparative analysis of the thermophysical properties of nanocarbon particles in ethylene glycol and deionized water. The properties investigated include thermal conductivity, viscosity, and specific heat capacity. Experimental measurements and computational simulations are performed to determine the effects of nanocarbon concentration and temperature on these properties. The results reveal significant enhancements in thermal conductivity for both nanocarbon-ethylene glycol and nanocarbon-deionized water suspensions, with higher enhancements observed in ethylene glycol. Viscosity and specific heat capacity also show distinct changes with the addition of nanocarbon particles. The findings provide valuable insights into the thermophysical behavior of nanocarbon-based nanofluids in different base fluids and contribute to the development of efficient thermal management systems.
In traditional Arabic linguistics, the forms of mood are classified in a somewhat peculiar way. In describing the forms of moods, Arabic philologists, emphasizing the semantic and modal shades of the word. In traditional Arabic grammar, the change of verbs by tenses, persons, gender and numbers is studied in Sarf (i.e. morphology), and the declension of names and change of verbs (iʼrab – conjugation) is considered in Nahv (i.e. syntax). Particles due to their invariableness, as well as the ability to control in other words as factors, are considered objects of Nahv. The relation of action to reality is established by various particles, which are called in the grammar – “Huruf”. These particles, on the one hand, express the modal function of conditionality, reality and imperative (prohibition), and on the other hand, perform the syntactic function of expressing subordinate connections in complex sentences with subordinate conditional clauses. The article is devoted to the study of the concept of “jazm” in the Arabic language, a comparison of this issue in the works of domestic and foreign philologists, as well as the determination of factors (reasons) that affect the formation of the verb in the form of “jazm” (i.e., the verb in truncated form). Based on the analysis of the views of Arab grammarians, were studied particles expressing the condition, and were revealed their syntactic features in the relative clause.
This study explores the advancement of optical recognition for plastic bottles through the implementation of sophisticated lighting systems. The research focuses on enhancing the accuracy and efficiency of identification processes, critical for recycling and waste management. Through a systematic examination of various lighting conditions, the study aims to optimize optical recognition algorithms for improved performance in diverse environmental settings. The results offer valuable insights into the potential of advanced lighting systems in refining the optical identification of plastic bottles, contributing to the advancement of sustainable waste management practices.
Dielectric properties play a crucial role in the performance of micro-composites used in various applications such as flexible electronics and energy storage devices. This study focuses on investigating the dielectric properties of micro-composites based on acrylic coated conducting carbon particles embedded in a silicone elastomer matrix. The acrylic coating enhances the dispersion and compatibility of the conducting carbon particles within the silicone elastomer, ensuring uniform distribution throughout the matrix. The dielectric properties, including the dielectric constant and loss tangent, are characterized over a range of frequencies and temperatures. The results reveal the tunability of the dielectric constant by adjusting the filler loading and coating thickness, enabling tailored electrical properties of the micro-composites. The low loss tangent indicates minimal energy dissipation and suggests the suitability of these micro-composites for applications requiring efficient dielectric materials.
The article presents the principles that are incorporated in the methods, as well as the methods themselves used to study the cornea: biomicroscopy, pachymetry, topographic keratotopography, optical coherence tomography, confocal microscopy and endothelial biomicroscopy. The use of traditional and modern high-tech methods of corneal examination allows for early and differential diagnosis in complex clinical cases, monitoring of treatment, as well as predicting the course and outcomes of corneal diseases
From the analysis of the literature, it is known that agricultural pest control devices designed to combat insects or for fishing attract flying insects, the growth of functional systems of Fish and fish larvae in one norm plays an important role in the development of light rays of optical radiation sources. Instruments with incandescent lamp, fluorescent, halogen or light-emitting semiconductor optoelectronic irradiators are widely used as sources of optical radiation in this area. When creating agricultural devices from them, light-emitting semiconductor optoelectronic devices are considered to withstand competition with performance, energy efficiency and other physical characteristics. In connection with these, the research methods and results of the study on the distribution of semiconductor optoelectronic irradiators in the air and aqueous medium as well as the spectral characteristics are described in this work.
This article presents a comprehensive analysis of key quality indicators for spun yarns, focusing on yarns with a linear density of T=20 (Ne=30) tex produced on both simple and compact ring spinning machines. Through the utilization of optical instrumentation, various parameters including relative breaking strength (Rkm), strength, elongation at break (E %), and hairiness (H %) were meticulously examined to evaluate yarn quality. The study delves into the assessment of yarn unevenness (CV %) as a crucial quality metric, aiming to provide insights into the deformation characteristics of spun yarns. By employing advanced optical techniques, such as high-resolution imaging and precise measurements, the deformation behaviour of yarns under different spinning conditions is elucidated. The findings shed light on the influence of spinning machine type on yarn quality parameters, revealing nuanced differences in strength, elongation, and hairiness between simple and compact spinning processes. Additionally, the analysis highlights the correlation between yarn deformation and overall yarn quality, emphasizing the significance of understanding deformation mechanisms in optimizing textile manufacturing processes. Through a rigorous examination of these quality indicators, this research contributes valuable insights into the intricate dynamics of spun yarn deformation and its implications for textile production. The utilization of optical instrumentation offers a novel approach to visualize and quantify yarn deformation, providing a deeper understanding of the factors influencing yarn quality and performance in industrial settings.
An ionic fluid is a natural salt essentially made out of particles which are ineffectively planned, bringing about a low dissolving point regularly underneath 100°C. It comprises of a natural or an inorganic cumbersome cation and a more modest anion. Because of the unsymmetrical particles, the cross section energy and the softening mark of the ionic fluids are lower than of inorganic salts. Ionic fluids have numerous novel properties, like high warm steadiness, enormous oxidative and reductive reach, great dissolvable for the vast majority of the natural and inorganic solutes, non-destructive and consumption forestalling nature, high ionic conductivity, and immaterial fume pressure. Their properties can be custom fitted, and henceforth ionic fluids have likewise been named as the "creator solvents". Ionic fluids can comprehensively be ordered into protic and aprotic ionic fluids. We have blended, and recorded a patent on an extraordinary failure cost ammonium-based protic ionic fluid by dissolvable free corrosive base balance technique. Its physicochemical properties like thickness and thickness, and their variety with temperature have been estimated, just as its warm strength measured. Its application in carbon catch, thinking about its incredible proclivity towards the CO2 particles, has likewise been investigated. Impact of cooperation of water atoms with the ionic fluid on its retention limit with regards to CO2 has likewise been surveyed. It is tracked down that this clever ionic fluid has the most elevated retention ability to cost proportion contrasted with all ionic fluids answered to date.
Current evidence suggests that the virus spreads mainly between people who are in close contact with each other, for example at a conversational distance. The virus can spread from an infected person’s mouth or nose in small liquid particles when they cough, sneeze, speak, sing or breathe. Another person can then contract the virus when infectious particles that pass through the air are inhaled at short range (this is often called short-range aerosol or short-range airborne transmission) or if infectious particles come into direct contact with the eyes, nose, or mouth (droplet transmission).
The formation of nanosized particles in pure silica glass irradiated in water in the reactor core with fast neutrons up to 1019 cm-2 and gamma radiation has been studied by optical spectroscopy and X-ray diffraction. Irradiation with neutrons leads to the destruction of the initial mesostructure of a - and β - quartz with dimensions of 1.7 and 1.2 nm and the formation of cristobalite and tridymite nanocrystallites with dimensions of 16 and 8 nm in displacement thermal peaks.
This article gives a brief overview of optical devices used in shooting. This article is intended to acquaint students (students) of higher, secondary special and secondary education institutions with information about optical devices used in shooting.
Purpose. To study the effectiveness of the use of the drug retinalamin in the complex treatment of patients with glaucomatous optical neuropathy (GON) and to compare the results with traditional means of treatment. Material and methods. A study of 70 patients (114 eyes), whose average age was 66.7+ 6.2 years old, suffered from POAG with compensated I0P. The diagnosis of the disease was made on the basis of anamnesis, clinical and instrumental studies. All patients studied were divided into 2 groups. Results. Treatment in both studied groups showed a positive effect on the improvement of biochemical parameters. So, the speed of products lipid peroxidation accumulation decreased from initial by 75.0% and 53.4%, for 77.2%
and 43.3%, for 73.8 and 60.2% according to the l-lll stages of POUG (P<0.001). Conclusion. The use of Retinalamin in the complex treatment of patients with glaucomatous optical neuropathy has an antioxidant effect, reduces the activity of PA2 and the level of MSM in patients with GON.
We have considered Reissner-Nordstr¨om (RN) charged nonrotating black hole (BH).We have studied motion of charged particles around charged RN BH. It was found out that there are two boundary conditions for specific angular momentum of stable circular orbits corresponding to: innermost stable circular orbits (ISCO) and outermost stable circular orbits (OSCO) and accretion disk is originated between these two orbits. It was obtained the upper and lower limits for the value of particle’s charge which may exist in the accretion disk matter around the extreme charged Reissner Nordstr¨om black hole.
Activation of herpesvirus infection in HIV-infected patients, in addition to a general increase in HIV replication, occurs with increased release of HIV virions in areas of herpetic skin rashes, which do not always have the appearance characteristic of herpes. The most important thing is that in this case particles of a mixed phenotype can be formed - HIV virions, "dressed” in the herpes shell. Such "camouflaged" particles, unlike ordinary HIV virions, are capable of infecting various types of cells, including epithelial cells and fibroblasts, thereby giving a productive HIV infection, that is, it becomes possible to become infected with HIV through contact with the skin and mucous membrane.