Physical properties of Ce3-xTe4 below room temperature

The physical properties of polycrystalline Ce3-xTe4 were investigated by measurements of the thermoelectric properties, Hall coefficient, heat capacity, and magnetization. The fully-filled, metallic x=0 compound displays a soft ferromagnetic transition near 4K, and analysis of the corresponding heat capacity anomaly suggests a doublet ground state for Ce^{3+}. The transition is suppressed to below 2K in the insulating x=0.33 composition, revealing that magnetic order in Ce3-xTe4 is driven by an RKKY-type interaction. The thermoelectric properties trend with composition as expected from simple electron counting, and the transport properties in Ce3Te4 are observed to be similar to those in La3Te4. Trends in the low temperature thermal conductivity data reveal that the phonons are efficiently scattered by electrons, while all compositions examined have a lattice thermal conductivity near 1.2W/m/K at 200K.Comment: Submitted to Phys. Rev.

Platelet-rich plasma: application for interstitial cystitis and erectile dysfunction

Up-to-date, the platelet-rich plasma (PRP) treatment method is actively used in many fields of medicine. In traumatology, PRP is used to treat bone and cartilage defects, ligamentous apparatus. In combustiology for the healing of burns, in surgery ¾ trophic ulcers. There is evidence of the feasibility of using PRP in some dermatological diseases, as well as in dental practice. For urology, the method is new and is just beginning to be studied. The article discusses the methods of treatment of interstitial cystitis (IC) and erectile dysfunction (ED) using PRP. During the review, we relied on existing data on the effectiveness of intravesical injections of PRP in the treatment of IC, as well as on the successful treatment of ED with activated, nonactivated PRP and PRP augmented phosphodiesterasetype 5 (PDE-5) inhibitors

Mathematical calculation of the optimal time to achieve operating parameters according to WCR when dosing corrective reagents into a double-circuit waste heat boiler with a parallel feedwater supply scheme

This article discusses the issues of estimating the time to achieve the normalized WCR indicators when dosing corrective reagents into a two-loop waste heat boiler, with a parallel scheme for supplying feed water to the circulation circuits. Calculations of the optimal time required to reach the regime parameters of the WCR when dosing amine-containing reagents are given. The article also provides calculations of the optimal time to reach the WCR regime parameters, depending on the feed water flow rate in each of the waste heat boiler circulation circuits

Nomenclatural standards and genetic passports of potato cultivars bred at the Leningrad Research Institute for Agriculture “Belogorka”

In the present paper, the potato cultivars bred at the Leningrad Research Institute for Agriculture “Belogorka”, were taken as an example for demonstrating the results of elaboration of methodological approaches that are currently developed at the N.I. Vavilov Institute of Plant Genetic Resources (VIR) for the preparing of nomenclatural standards and their genotyping. In 2018, joint research of VIR scientists and breeders from the Leningrad Research Institute for Agriculture “Belogorka” began in the field of preparing nomenclatural standards for potato cultivars bred at this institute. Nomenclatural standards were prepared according to the ‘International Code of Nomenclature for Cultivated Plants’. Plant material for herbarium specimens was collected in the experimental field of the “Belogorka” Institute in 2018 by cultivar authors and handed over to the VIR Herbarium of cultivated plants, their wild relatives and weeds (WIR). The plant material included stems with inflorescences and later - tubers of 21 cultivars which were bred at the “Belogorka” Institute. Two precultivars undergoing State variety testing and three breeding clones were also included in this study. Just before herbarium preparation, the obtained plant material was photographed, plant morphological characters described, and the results compared with the description given in such official documents as the “Cultivar Questionnaireˮ and “Description of selection achievementˮ. The nomenclatural standards of 21 cultivars registered in the VIR Herbarium Database and transferred for conservation to the VIR herbarium, are published in this paper. Before herbarium preparation, the plant material was sampled for DNA extraction and subsequent genotyping and molecular screening. The genetic passports include information about the polymorphism of 10 chromosome-specific microsatellite loci, as well as the data on the presence/absence of diagnostic fragments of 12 markers of the 11 R-genes conferring resistance to diseases and pests, and for some cultivars – the information about their cytoplasm type. These genetic passports are valuable not only because different types of DNA markers were used in their preparing (SSR, SCAR and CAPS markers of the R genes; markers specific to different loci of the nuclear and organelle genomes), but first of all because of the material itself, as the DNA samples were isolated from the plants with the assigned status of nomenclatural standard for each particular cultivar. Based on the genetic passports data, trueness to type of the “Belogorka” cultivar samples obtained from various sources was verified

International alliance of Urolithiasis (IAU) guideline on percutaneous nephrolithotomy

The International Alliance of Urolithiasis (IAU) would like to release the latest guideline on percutaneous nephrolithotomy (PCNL) and to provide a clinical framework for surgeons performing PCNL. These recommendations were collected and appraised from a systematic review and assessment of the literature covering all aspects of PCNLs from the PubMed database between January 1, 1976, and July 31, 2021. Each generated recommendation was graded using a modified GRADE methodology. The quality of the evidence was graded using a classification system modified from the Oxford Center for Evidence-Based Medicine Levels of Evidence. Forty-seven recommendations were summarized and graded, which covered the following issues, indications and contraindications, stone complexity evaluation, preoperative imaging, antibiotic strategy, management of antithrombotic therapy, anesthesia, position, puncture, tracts, dilation, lithotripsy, intraoperative evaluation of residual stones, exit strategy, postoperative imaging and stone-free status evaluation, complications. The present guideline on PCNL was the first in the IAU series of urolithiasis management guidelines. The recommendations, tips and tricks across the PCNL procedures would provide adequate guidance for urologists performing PCNLs to ensure safety and efficiency in PCNLs

Oscillations and waves in solar spicules

Since their discovery, spicules have attracted increased attention as energy/mass bridges between the dense and dynamic photosphere and the tenuous hot solar corona. Mechanical energy of photospheric random and coherent motions can be guided by magnetic field lines, spanning from the interior to the upper parts of the solar atmosphere, in the form of waves and oscillations. Since spicules are one of the most pronounced features of the chromosphere, the energy transport they participate in can be traced by the observations of their oscillatory motions. Oscillations in spicules have been observed for a long time. However the recent high-resolutions and high-cadence space and ground based facilities with superb spatial, temporal and spectral capacities brought new aspects in the research of spicule dynamics. Here we review the progress made in imaging and spectroscopic observations of waves and oscillations in spicules. The observations are accompanied by a discussion on theoretical modelling and interpretations of these oscillations. Finally, we embark on the recent developments made on the presence and role of Alfven and kink waves in spicules. We also address the extensive debate made on the Alfven versus kink waves in the context of the explanation of the observed transverse oscillations of spicule axes

Largest ancient fortress of South-West Asia and the western world?:Recent fieldwork at Sasanian Qaleh Iraj at Pishva, Iran

The article presents recent works at Qale Iraj, near Varamin, Iran. My short contribution is on the Middle Persian ostraka found at the site

Electronic properties and phase transitions in low-dimensional semiconductors

We present the first review of the current state of the literature on electronic properties and phase transitions in TlX and TlMX2 (M = Ga, In; X = Se, S, Te) compounds. These chalcogenides belong to a family of the low-dimensional semiconductors possessing chain or layered structure. They are of significant interest because of their highly anisotropic properties, semi- and photoconductivity, non-linear effects in their I-V characteristics (including a region of negative differential resistance), switching and memory effects, second harmonic optical generation, relaxor behavior and potential applications for optoelectronic devices. We review the crystal structure of TlX and TlMX2 compounds, their transport properties under ambient conditions, experimental and theoretical studies of the electronic structure, transport properties and semiconductor-metal phase transitions under high pressure, and sequences of temperature-induced structural phase transitions with intermediate incommensurate states. Electronic nature of the ferroelectric phase transitions in the above-mentioned compounds, as well as relaxor behavior, nanodomains and possible occurrence of quantum dots in doped and irradiated crystals is discussed.Comment: 70 pages, 38 figure

Радикальная простатэктомия в России: особенности периоперационного ведения и нюансы технического исполнения

Despite constant improvements in radical prostatectomy technique, some questions on standardization of both perioperative management stages and surgical intervention itself remain.We conducted an anonymous online survey of 45 oncological urologists from 15 regions of the Russian Federation who are actively involved in the surgical treatment of patients with prostate cancer.According to the results of the survey, there is huge variability associated, to a great extent, with equipment availability in clinics and the lack of sufficient evidence-based information in some matters of perioperative management.A detailed study of each step of surgical treatment, clinical trials, and involvement of professional societies will contribute to the standardization of perioperative management of patients and radical prostatectomy technique. Несмотря на  продолжающееся совершенствование техники радикальной простатэктомии, все  еще есть ряд вопросов по стандартизации этапов периоперационного ведения пациентов и самого оперативного вмешательства. Мы   провели  анонимный онлайн-опрос  45  онкоурологов из  15  регионов  России, активно  занимающихся хирургическим лечением больных раком предстательной железы.По результатам анализа полученных данных выявлена значительная вариативность подходов, связанная в большей степени с техническими возможностями клиник и отсутствием в некоторых вопросах достаточной доказательной базы. Детальное изучение каждого этапа хирургического лечения, проведение клинических исследований с привлечением профессиональных ассоциаций будут способствовать унификации стандартного периоперационного ведения пациентов и техники радикальной простатэктомии

Лечение пациентов с гнойно-некротическими ранами с использованием внутривенного лазерного облучения крови (405 нм)

Objective: to analyze the effectiveness of purulent-necrotic wounds management using intravenous laser irradiation of blood (405nm). Materials and methods. Object of study – patients with purulent-necrotic wounds. Clinical studies and analysis of the intravenous laser blood irradiation (405 nm) effect on the wound healing process and on the healing speed of purulent soft tissues wounds in patients with type 2 diabetes mellitus were carried out. Results. It was found that the use of intravenous laser blood irradiation (405 nm) is a highly effective method for the treatment of purulent soft tissues wounds, which allows to reduce the number of complications and shorten the time for complete epithelization of purulent wounds by 7–10 days compared with traditional treatment. Цель исследования: анализ эффективности методики лечения больных гнойно-некротическими ранами с использованием внутривенного лазерного облучения крови (405 нм). Материалы и методы исследования. Объект исследования – пациенты с гнойно-некротическими ранами. В процессе работы проводили клинические исследования и анализ влияния внутривенного лазерного облучения крови (405 нм) на течение раневого процесса и на скорость заживления гнойных ран мягких тканей больных сахарным диабетом II типа. Результаты исследования. Установлено, что использование внутривенного лазерного облучения крови (405 нм) является высокоэффективным методом лечения гнойных ран мягких тканей, позволяющим уменьшить количество осложнений и сократить сроки полной эпителизации гнойных ран на 7–10 суток по сравнению с традиционным лечением.