Influence of film thickness on the dielectric characteristics of hafnium oxide layers

The present work focuses on the study of properties of hafnium oxide (HfO2) films, deposited by reactive magnetron sputtering of the Hf target in Ar/O2 gas mixture. The X-ray diffraction analysis of the deposited films proved the amorphous structure of the films, which was also confirmed by the Raman spectroscopy. It was determined that as the HfO2 film thickness had been decreased from 98.6 nm to 13.5 nm, film density had dropped from 9.52 to 9.26 g/cm2. At the same time, the dielectric constant dropped from 21.3 to 8.0 units, and the dielectric loss tangent rose, especially at high frequencies. At the same time, the decrease in film thickness resulted in increased leakage currents at low electric field density E, and decreased leakage currents at high E. Improvement of dielectric characteristics and increase in leakage current with film thickness growth is a consequence of film densification and the formation of a crystalline phase. Thickness dependence of the dielectric constant is associated with the violation of the ionic polarization mechanism at the film electrode interface

Antimicrobial Activity of Ethanolic Extract of Sempur (Dillenia Suffruticosa (Griff.) Martelli) Leaves Against Pathogenic Microorganisms

Sempur (Dillenia suffruticosa) leaves are known as a traditional medicine for the people of Bangka-Belitung Island. The local people empirically utilize the boiled water of D. suffruticosa leaves as anti-diarrhea. However, the antimicrobial activity of the ethanol extract of D. suffruticosa leaves has not been reported. This study aims to determine the antimicrobial activity of the ethanol extract of D. suffruticosa leaves against several microorganisms: Staphylococcus aureus as Gram-positive bacteria, Escherichia coli as Gram-negative bacteria, and Candida albicans as fungi. Extraction was carried out by maceration method with 70% ethanol, then screened for phytochemical constituents. The antimicrobial test was carried out by the disc diffusion method using Nutrient Agar (NA) for bacteria, and Sabouraud Dextrose Agar (SDA) for fungi. The results of phytochemical screening showed that the ethanol extract of D. suffruticosa leaves contained alkaloids, flavonoids, tannins, and saponins. The antimicrobial test showed that the extract of D. suffruticosa leaves could inhibit the growth of S. aureus at concentrations of 10%, 20%, and 40% were 8.35±0.05; 9.34±0.32; and 10.52±0.22, respectively. The ethanol extract of D. suffruticosa leaves could inhibit the growth of S. aureus, whereas E. coli and C. albicans did not show any activity

Amino acid formulas in patients with food allergy

The article presents modern approaches to the use of balanced formulas for nutrition and diet correction in children with various forms of food allergies. The guidelines are based on all available up to date evidence on the efficacy, safety and utility of using such innovative medical technology as specialized amino acid formulas. This formula is the targeted medical intervention for food allergies and confirmed cow's milk protein allergy, and particularly for patients with reduced physical growth and development (growth rates included). The material is based on methodological guidelines on the amino acid formulas usage previously developed by specialist experts of the Union of pediatricians of Russia in 2020

Amino Acid Formulas in Patients with Gastrointestinal Diseases

Modern approaches for the management of children with gastrointestinal pathologies include optimal nutritional support that makes it possible to replete energy failure and restore essential nutrients balance. The article presents key information on gastrointestinal diseases in which modern amino acid formulas can be used to regulate nutritional status. The authors have conducted the extensive analysis of all available for now evidence on the efficacy, safety and utility of using such innovative medical technology as special elemental formula in gastrointestinal tract pathological conditions. This material is the basis for guidlines on the use of amino acid formulas developed by expert specialists of the Union of Pediatricians of Russia in 2020

Современные подходы к ведению детей с острой респираторной вирусной инфекцией

Experts of the Union of Pediatricians of Russia have developed modern guidelines on management of children with acute respiratory viral infection. The term “acute respiratory viral infection” (ARVI) combines following nosological forms: acute nasopharyngitis, acute pharyngitis, acute laryngitis, acute tracheitis, acute laryngopharyngitis, upper respiration tract infection (unspecified). The issues of epidemiology, diagnosis, treatment, and prevention have been considered in detail.Экспертами Союза педиатров России разработаны актуальные клинические рекомендации по оказанию медицинской помощи детям с острой респираторной вирусной инфекцией. Понятие «острая респираторная вирусная инфекция (ОРВИ)» суммирует следующие нозологические формы: острый назофарингит, острый фарингит, острый ларингит, острый трахеит, острый ларингофарингит, острая инфекция верхних дыхательных путей неуточненная.Подробно разобраны вопросы эпидемиологии, диагностики, лечения и профилактики

Применение аминокислотных смесей при заболеваниях желудочно-кишечного тракта

Modern approaches for the management of children with gastrointestinal pathologies include optimal nutritional support that makes it possible to replete energy failure and restore essential nutrients balance. The article presents key information on gastrointestinal diseases in which modern amino acid formulas can be used to regulate nutritional status. The authors have conducted the extensive analysis of all available for now evidence on the efficacy, safety and utility of using such innovative medical technology as special elemental formula in gastrointestinal tract pathological conditions. This material is the basis for guidlines on the use of amino acid formulas developed by expert specialists of the Union of Pediatricians of Russia in 2020.Современные подходы к ведению детей с патологией желудочно-кишечного тракта включают оптимальную нутритивную поддержку, которая позволяет восполнить энергетический дефицит и восстановить баланс основных нутриентов. В статье представлены ключевые сведения о заболеваниях пищеварительного тракта, при которых в целях коррекции нутритивного статуса могут быть использованы современные аминокислотные смеси. Авторами проведен тщательный анализ всех доступных на сегодняшний день доказательств эффективности, безопасности и полезности применения такой инновационной медицинской технологии, как специальная элементная формула при патологических состояниях желудочно-кишечного тракта. Материал является основой методического руководства по применению аминокислотных смесей, разработанного экспертами-специалистами Союза педиатров России в 2020 г

Применение аминокислотных смесей при пищевой аллергии

The article presents modern approaches to the use of balanced formulas for nutrition and diet correction in children with various forms of food allergies. The guidelines are based on all available up to date evidence on the efficacy, safety and utility of using such innovative medical technology as specialized amino acid formulas. This formula is the targeted medical intervention for food allergies and confirmed cow's milk protein allergy, and particularly for patients with reduced physical growth and development (growth rates included). The material is based on methodological guidelines on the amino acid formulas usage previously developed by specialist experts of the Union of pediatricians of Russia in 2020.В статье приводятся современные подходы к использованию сбалансированных детских смесей, которые предназначены для вскармливания и коррекции рациона детей, страдающих различными формами пищевой аллергии. Рекомендации разработаны на основании всех доступных на сегодняшний день доказательств эффективности, безопасности и полезности использования такой инновационной медицинской технологии, как специализированные аминокислотные смеси. Данная формула является таргетным медицинским вмешательством при пищевой аллергии и подтвержденной аллергии к белкам коровьего молока, особенно для пациентов со сниженными показателями физического развития, в том числе темпов роста. Материал основан на методическом руководстве по применению аминокислотных смесей, ранее разработанном экспертами-специалистами Союза педиатров России в 2020 г