bluuebunny/crossref_metadata_2025 huggingface dataset:
Development of the Rumah Karya application in the educational technology study program as a media database for the works of lecturers and students
Authors: Mawarni Sella , Hartoto Hartoto
Published: March 2023

This research aims to produce Rumah Karya applications that provide a media product database for lecturers and students in the Educational Technology Study Program at Makassar State University. The research method used in this research is RD (Research and Development), with the ADDIE development model divided into five stages: analysis, design, development, implementation, and evaluation. The Rumah Karya application has been validated by the head of a study program as a material expert and an information technology (IT) expert. Validation from material experts obtained an average of 98% very feasible category, and validation from IT experts obtained an average of 92% very feasible category. This application has been tested by lecturers and students in the Educational Technology study program, which produces an average of 83.8% which includes a very feasible category. The Rumah Karya application has been registered as intellectual property rights at Makassar State University. The Rumah Karya application has been implemented and integrated with the Educational Technology study program website. This research has the potential to carry out further research related to additional development features in Rumah Karya that can enhance the user experience in using the application. This research can also be extended to other study programs or other educational institutions to measure the generalization of Rumah Karya's application in improving the quality of media products in educational institutions.
Дифракция электромагнитных волн на одномерных дифракционных решетках, образованных щелями в абсолютно поглощающем экране
Authors: Лерер А.М. , Махно В.В. , Кравченко В.И.
Published: March 2023

Two-sided approximate boundary conditions are obtained for an absolutely absorbing ("black") layer lying on a multilayer dielectric. Paired summation equations (PSEs) are obtained for the tangent components of the electric and magnetic field strengths at the slots. These equations are solved by the Galerkin method with basis functions in the form of Chebyshev and Legendre polynomials. The resulting system of linear algebraic equations has fast internal convergence. To control the accuracy of the obtained solution, a dual problem is solved - a lattice of "black stripes". In this case, the unknowns in the PSU are the current density on the strips. The properties of lattices are analyzed.
Влияние деформаций растяжения и сжатия на электропроводные свойства графен-нанотрубных композитов с топологией островкового типа
Authors: Слепченков М.М. , Барков П.В. , Глухова О.Е.
Published: March 2023

Within the framework of the self‐consistent‐charge density functional tight‐binding method, we study the features of the atomic structure and electrical conductive properties of a hybrid graphene-nanotube film with an island topology under uniaxial stretching and compression. The hybrid film is a composite structure formed by AB-stacked bilayer graphene and horizontally oriented chiral single-walled carbon nanotubes of 1.2 nm in diameter. The regularities of the deformation behavior of the investigated hybrid structure are revealed and the limits of its strength are established. It is shown how the electrical resistance and the current-voltage characteristic of the film change under stretching/compression deformations.
Обогащение спектра многоволновой пикосекундной генерации синхронно-накачиваемого ВКР-лазера на кристалле Sr(MoO_4)-=SUB=-0.8-=/SUB=-(WO_4)-=SUB=-0.2-=/SUB=-
Authors: Терещенко Д.П. , Сметанин С.Н. , Папашвили А.Г. , Губина К.А. , Кочуков Ю.А. , Солохин С.А. , Ершков М.Н. , Шашков Е.В. , Шукшин В.Е. , Ивлева Л.И. , Дунаева Е.Э. , Воронина И.С.
Published: March 2023

For the first time to our knowledge, a single-phase solid solution Sr(MoO4)0.8(WO4)0.2 was used as an active medium of a Raman laser. Using the high-intensity synchronous picosecond pumping satisfying the condition of phase capture of the parametric Raman interaction on the second vibrational mode made it possible to oscillate six components of Raman radiation with a combined frequency shift on the first (888 cm–1) and second (327 cm–1) vibrational modes in the wavelength range of 1194-1396 nm. Oscillation efficiency of the multiwavelength Raman laser radiation was as high as 10%. By detuning the Raman laser cavity length, the pulse shortening down to 6 ps for the Raman laser radiation components with the combined frequency shift was obtained, which is an order of magnitude shorter than the pumping pulse duration (64 ps).
Спектрофотометрический метод исследования устойчивости комплексов поздних лантаноидов
Authors: Сумянова Ц.Б. , Прижилевская В.Р. , Борисова Н.Е.
Published: March 2023

Представлены результаты исследования влияния центрального иона металла на устойчивость комплексов гадолиния и гольмия с диамидом 1,10'-фенантролин-2,9-дикарбоновой кислоты. Полученные значения констант устойчивости комплексов оказались на порядок ниже, чем известные ранее величины для комплексов этих элементов с диамидом 4,7-дихлор-1,10'-фенантролин-2,9-дикарбоновой кислоты. Ключевые слова: спектрофотометрия, гадолиний, гольмий, контрастные вещества.
Ограничение мощности лазерного излучения углеродными материалами с нелинейным оптическим пороговым эффектом при форме импульса с плоской вершиной
Authors: Савельев М.С. , Василевский П.Н. , Шаман Ю.П. , Толбин А.Ю. , Герасименко А.Ю. , Селищев С.В.
Published: March 2023

The possibilities of using multivariate determination of carbon nanotubes properties based on the dependence data of the normalized transmission logarithm on the sample displacement in the case of Z-scan with an open aperture as well as on the total pulse energy in the case of fixed sample position measurements are studied. The radiation transfer equation for the threshold dependence of the absorption coefficient on the intensity of a flat-top laser beam is used. The data of physical and computational experiments showed the sensitivity of the measured curves with respect to the values of the constants of the optical and threshold energy fluence, as well as the beam waist radius. The possibility of multivariate determination of the properties of liquid carbon nanotube-based dispersed media with a nonlinear optical threshold effect and beam waist radius inside such samples has been established.
Измерение расстояния по максимальной частоте интерференционного сигнала при гармонической девиации длины волны лазерного автодина
Authors: Скрипаль А.В. , Добдин C.Ю. , Инкин М.Г. , Джафаров А.В.
Published: March 2023

A method is proposed for measuring absolute distances from the low-frequency spectrum of the interference signal of a frequency-modulated laser diode. The method of modulation of the self-mixing laser signal according to the harmonic law is used, in the spectrum of which a wide range of frequency components is observed. The connection between the maximum frequency of change of the interference signal and the absolute distance to the reflector is shown. A linear dependence of the frequency corresponding to the inflection region of the decay envelope of the interference signal spectrum on the distance is shown, which can be used to implement a non-contact distance measurement method with harmonic modulation of the self-mixing laser supply current.
Departamento de Sucre : anexo 6
Authors: Campos C. Wilson , Contreras Niño Uriel Humberto , Cadena Torres Jorge , Arias Robles Milena , Rincón N. Rubiela , Sánchez German , Zuluaga María Victoria , Cepeda Mónica
Published: March 2023

El presente documento se preparó con el fin de proveer información básica departamental sobre el desempeño sectorial, sus vínculos con la orientación de la ciencia, la tecnología y la innovación y las demandas del sector sobre conocimiento técnico para focalizar la inversión pública, articular capacidades, superar problemas productivos, mejorar la competitividad y aprovechar oportunidades de mercado en las cadenas productivas priorizadas. Esta información se consolidó a través del proceso de revisión y ajuste de la Agenda Dinámica Nacional de Investigación, Desarrollo Tecnológico e Innovación (Agenda I+D+i), como insumo para orientar las estrategias del PECTIA en el ámbitodepartamental.
Actualización del Plan Estratégico de Ciencia, Tecnología, e Innovación del sector Agropecuario PECTIA 2017 - 2027 : Departamento del Valle del Cauca 2022
Authors:   Ministerio de Agricultura y Desarrollo Rural, Bogotá (Colombia),   Gobernación de Valle del Cauca (Colombia),   Secretaría de Desarrollo Rural, Agricultura y Pesca, Valle del Cauca (Colombia),   Corporación colombiana de investigación agropecuaria, Mosquera (Colombia)
Published: March 2023

La actualización del Plan Estratégico de Ciencia, Tecnología e Innovación del sector Agropecuario Colombiano – Pectia del Valle del Cauca fue posible gracias al liderazgo de la Mesa de Ciencia, Tecnología e Innovación Agropecuaria - Mesa de CTIA en cabeza de la Secretaría de Desarrollo Rural, Agricultura y Pesca - SDRAP; el direccionamiento del Ministerio de Agricultura y Desarrollo Rural -MADR; el apoyo del Ministerio de Ciencia, Tecnología e Innovación - Minciencias; el acompañamiento metodológico de la Corporación Colombiana de Investigación Agropecuaria - AGROSAVIA y el trabajo colaborativo de instancias y actores como entidades de investigación, centros de investigación y desarrollo tecnológico agropecuario, universidades, gremios y productores agropecuarios, empresas, entidades de apoyo públicas y privadas, entre otras; que representan el Sistema Nacional de Innovación Agropecuaria - SNIA en el departamento.
Actualización del Plan Estratégico de Ciencia, Tecnología, e Innovación del sector Agropecuario PECTIA 2017 - 2027 : Departamento de Casanare 2022
Authors:   Ministerio de Agricultura y Desarrollo Rural, Bogotá (Colombia),   Gobernación de Casanare (Colombia),   Secretaría de Desarrollo Económico, Agricultura, Ganadería y Medio Ambiente, Casanare (Colombia),   Corporación colombiana de investigación agropecuaria, Mosquera (Colombia)
Published: March 2023

La elaboración del Plan Estratégico de Ciencia, Tecnología e Innovación del sector Agropecuario Colombiano – Pectia de Casanare fue posible gracias al liderazgo de la Mesa de Ciencia, Tecnología e Innovación Agropecuaria (Mesa de CTIA) en cabeza de la Secretaría de Desarrollo Económico, Agricultura, Ganadería y Medio Ambiente; el direccionamiento del Ministerio de Agricultura y Desarrollo Rural (MADR); el apoyo del Ministerio de Ciencia, Tecnología e Innovación (MinCiencias); el acompañamiento metodológico de la Corporación Colombiana de Investigación Agropecuaria (AGROSAVIA), el acompañamiento del Fondo BioCarbono Orinoquía y el trabajo colaborativo de instancias y actores como entidades de investigación, centros de investigación y desarrollo tecnológico agropecuario, universidades, gremios y productores agropecuarios, empresas, entidades de apoyo públicas y privadas, entre otras; que representan el Sistema Nacional de Innovación Agropecuaria (SNIA) en el departamento.
Actualización del Plan Estratégico de Ciencia, Tecnología, e Innovación del sector Agropecuario PECTIA 2017 - 2027 : Departamento de Antioquia 2022
Authors:   Ministerio de Agricultura y Desarrollo Rural, Bogotá (Colombia),   Gobernación de Antioquia (Colombia),   Secretaría de Agricultura y Desarrollo Rural, Antioquia (Colombia),   Corporación colombiana de investigación agropecuaria, Mosquera (Colombia)
Published: March 2023

La actualización del Plan Estratégico de Ciencia, Tecnología e Innovación del sector Agropecuario Colombiano – Pectia de Antioquia fue posible gracias al liderazgo de la Mesa de Ciencia, Tecnología e Innovación Agropecuaria (Mesa de CTIA) en cabeza de la Secretaría de Agricultura y Desarrollo Rural; el direccionamiento del Ministerio de Agricultura y Desarrollo Rural (MADR); el apoyo del Ministerio de Ciencia, Tecnología e Innovación (Minciencias); el acompañamiento metodológico de la Corporación Colombiana de Investigación Agropecuaria (AGROSAVIA) y el trabajo colaborativo de instancias y actores como entidades de investigación, centros de investigación y desarrollo tecnológico agropecuario, universidades, gremios y productores agropecuarios, empresas, entidades de apoyo públicas y privadas, entre otras; que representan el Sistema Nacional de Innovación Agropecuaria (SNIA) en el departamento.
Actualización del Plan Estratégico de Ciencia, Tecnología, e Innovación del sector Agropecuario PECTIA 2017 - 2027 : Departamento de Vichada 2022
Authors:   Ministerio de Agricultura y Desarrollo Rural, Bogotá (Colombia),   Gobernación del Vichada (Colombia),   Proyecto Bicarbono Orinoquía, Vichada (Colombia),   Corporación colombiana de investigación agropecuaria (Colombia)
Published: March 2023

Tradicionalmente, el principal uso del suelo del Vichada ha sido la ganadería extensiva, la cual, según datos de la ENA (DANE, 2019), representa el 88% del total de uso del suelo, mientras que la actividad agrícola representa tan solo un 0,357 % y el 10,7 % restante es cobertura boscosa. En cuanto a la producción agrícola y forestal, en los municipios de La Primavera y Puerto Carreño se ha promovido el desarrollo de cultivos de marañón, y especies forestales de caucho natural, Acacia mangium, Pino caribea y eucalipto con fines comerciales. Por su parte, en el municipio de Santa Rosalía se viene desarrollando actividades agroindustriales de la palma aceitera y en el municipio de Cumaribo se presentan actividades agrícolas a gran escala, principalmente en cultivo de maíz. Con relación al sector pecuario, cuya principal actividad es la Ganadería, se reporta un total de 256.954 cabezas de ganado bovino, en aproximadamente 1.762 predios ganaderos.
Contexto de cadena apícola
Authors: Zambrano Muñoz Adriana del Pilar
Published: March 2023

En esta ficha de contexto se mencionan los aspectos importantes de la cadena apícola enfocados a su marco productivo, regional, económico, comercio internacional, así como sus perspectivas y tendencias frente al mercado, dando a conocer su entorno de Ciencia y Tecnología e Innovación.
Contexto de cadena flores
Authors: Zambrano Muñoz Adriana del Pilar
Published: March 2023

En esta ficha de contexto se mencionan los aspectos importantes de la cadena de flores enfocados a su marco productivo, regional, económico, comercio internacional, así como sus perspectivas y tendencias frente al mercado, dando a conocer su entorno de Ciencia y Tecnología e Innovación.
Contexto de cadena fresa
Authors: González Cerón Sandra Paola
Published: March 2023

En esta ficha de contexto se mencionan los aspectos importantes de la cadena de fresa enfocados a su marco productivo, regional, económico, comercio internacional, así como sus perspectivas y tendencias frente al mercado, dando a conocer su entorno de Ciencia y Tecnología e Innovación.
Contexto de cadena hortalizas - tomate
Authors: Ortiz Flórez Sebastián Alejandro
Published: March 2023

En esta ficha de contexto se mencionan los aspectos importantes de la cadena de hortalizas - tomate enfocados a su marco productivo, regional, económico, comercio internacional, así como sus perspectivas y tendencias frente al mercado, dando a conocer su entorno de Ciencia y Tecnología e Innovación.
Contexto de cadena piña
Authors: González Cerón Sandra Paola
Published: March 2023

En esta ficha de contexto se mencionan los aspectos importantes de la cadena de piña enfocados a su marco productivo, regional, económico, comercio internacional, así como sus perspectivas y tendencias frente al mercado, dando a conocer su entorno de Ciencia y Tecnología e Innovación.
Contexto de cadena plátano
Authors: González Cerón Sandra Paola
Published: March 2023

En esta ficha de contexto se mencionan los aspectos importantes de la cadena de plátano enfocados a su marco productivo, regional, económico, comercio internacional, así como sus perspectivas y tendencias frente al mercado, dando a conocer su entorno de Ciencia y Tecnología e Innovación.
Componente ambiental: agua y suelo
Authors: Rúa Bustamante Clara Viviana , Zambrano Juan Ricardo , Gómez Luis Fernando
Published: March 2023

El suelo proporciona soporte natural y nutrientes para el desarrollo de las plantas. Su adecuado manejo en los sistemas agropecuarios, promueve su conservación y sostenibilidad.
Cosecha y poscosecha: poscosecha
Authors: Garcia Maria Cristina
Published: March 2023

La poscosecha tiene como fin preservar la calidad de la fruta, generar mayor valor y conferirle mayor vida útil, abriendo oportunidades de acceder a mercados de mayor valor y distantes. Aunque la poscosecha inicia una vez retirada la fruta del árbol, esta se asocia con las operaciones de acondicionamiento
(n,p) урвалын огтлол ба цөмийн урвалын механизмууд
Authors: Г Хүүхэнхүү , Б Баярбадрах
Published: March 2023

Цөмийн урвалын компаунд механизмд үндэслэсэн статистик загварыг ашиглан (n,p) урвалын огтлолыг бодож, туршлагын утгуудтай харьцуулав. Мөн шууд ба хагас шууд механизмын нөлөөг тооцож 14 МэВ энергитэй нейтроноор явагдах (n,p) урвалын огтлолын утгуудад систематик анализ хийв.
Резонансын нейтроны идэвхжлээр алтны агуулгыг тодорхойлох асуудалд
Authors: Б Отгоолой , П Зузаан , С Одмаа , Д Баатархүү
Published: March 2023

Микротрон МТ-22-ын резонансынн нейтроны суваг дахь кадмийн харьцаагаар полиэтилен сав бүхий дээжинд нейтроны удаашрах процессыг шалгав.
Модны үртсийг цөмийн цацрагаар шарж боловсруулах биотехнологийн судалгаа
Authors: Ч Баярхүү , Д Баатархүү , Н Ганбаатар , М Тамара
Published: March 2023

Исследовано нами изменение содержания азото-содержающих органических веществ в опильках древесин, которые были облучены электронными пучками с энергией 22 МэВ на микротроне МТ -22. На основе метода электронного спектра поглощения молекул показано, что увеличивается содержание растворимых в воде азотосодержащих органических веществ в опильках древесин после облучения быстрыми электронами.
Электроны хурдасгуураар цацрагт цөм гаргах боломжийн тухай
Authors: Ш Гэрбиш , Н Балжинням , Г Ганболд , О Отгонсүрэн
Published: March 2023

21-р зууны эхэнд 2500 орчим цацраг идэвхт цөм мэдэгдэж байсны 200 орчим нь шинжлэх ухаан техникийн болон анагаах ухааны олон салбарт хэрэглэгдэж байна. Эдгээрийн ихэнх нь зохиомлоор тухайлбал эгэл бөөмс (цэнэгт бөөмс, гамма цацраг, нейтрон) бодистой харилцан үйлчлэхэд цэнэгт бөөмсийн хурдасгуур, нейтроны үүсгүүрт явагдах цөмийн урвалын үр дүнд үүснэ.
Өөрөө цуглуулагч керр орчин дахь гэрлийн стационар тм асимптот босоо долгио
Authors: Г Очирбат , О Нямсүрэн
Published: March 2023

Өмнөх өгүүлэлд (1) өөрөө цуглуулагч керр орчин дахь гэрлийн стационар тм долгионы оронд диэлектрикийн функц β 2, cnst, 4со 2, εi-дөрвөн параметрээс хамаарах хамаарлыг нягтлан судалсан дүнг тодорхойлон бичсэн .
Нейтроны цөмийн харилцан үйлчлэлийн судалгааны хөгжил
Authors: Г Хүүхэнхүү , М Одсүрэн
Published: March 2023

Origin and development in Mongolia of the study on interaction of neutrons with nuclei in cooperation with the Joint Institute for Nuclear Research are described. New results оf the statistical model analysis for fast neutron induced (n,p) reaction cross sections arc given.
Charging of dust grains weakly ionized plasma
Authors: J Vanchinkhuu , L.N Hau
Published: March 2023

The charging of dust grains in weakly ionized high pressure plasma is considered in drift-diffusion approximation which is valid for dusty plasma under high pressure as atmospheric plasma. The dependence of dust potential on the number density of grains and the temporal evolution grain charge are taken. It is shown that the charging time of grain in high pressure plasma is smaller than that of grain in low pressure plasma. By using the Poisons equation, the potential distribution around the dust particle is taken.
Spectroscopy with Polarization Controlled Entangled Photons for Detecting Orbital Excitation in Solids
Authors: P Munkhbaatar , D Ulam-Orgikh , J Vanchinkhuu
Published: March 2023

We propose an excitation-probe measurement method utilizing entangled photon pulses. The excitation-probe signal is dominated by stimulated Raman scattering as well as two-photon absorption when the time delay between the excitation pulse and the probe pulse is shorter than the pulseduration. This paper demonstrates that the two-photon-absorption signal can be suppressed when the photons of the pulses are entangled. The stimulated Raman scattering signal can be composed of many peaks distributed over broad photon energies owing to the transitions between numerous quantum states in complex materials. We also show that the desired peaks among the many peaks can be selected by controlling the thickness of the nonlinear crystal, the pump pulse center frequency,and the polarization of the excitation pulse and probe pulse.
Generation and Detection of Squeezed Phonon
Authors: P Munkhbaatar
Published: March 2023

The variance of the time dependent atomic positions and momenta is directly mapped into the quantum uctuations of the photon number of the scattered probing light. A fully quantum de-scription of the non-linear interactions between photonic and phononic fields unveils evidences of squeezing of thermal phonons. In here a pump-probe spectroscopy was proposed to observe phonon squeezing in solids. Numerical simulation showed pump-probe response due to coherent phonon and squeezed phonon in alpha-quartz.
Цахилгаан Шүүлтүүр Дотор Явагдах Титэмт Ниргэлгийн Хязгаарын Параметрүүдийг Тооцоолох нь
Authors: Ж Ванчинхүү , П Мөнхбаатар , Б Бат-Эрдэнэ , Ш Мөнхжаргал
Published: March 2023

Цахилгаан шүүлтүүрт явагдах титэмт ниргэлэг үүсэх болон стример шилжих нөхцөлийг судалж стационар титэмт ниргэлэг явагдаж байх хүчдэл, гүйдлийн хамгийн их ба хамгийн багаутгын хязгаарыг тооцоолов. Түүнчлэн иончлолын коэффициентийн орноос хамаарах хамаарал мэдэгдэж байгаа тохиолдолд титэмт ниргэлгийн асаах хүчдлийн утгыг онолын хувьд гаргах боломжтойг үзүүлж титэмт ниргэлгийн доторхи цахилгаан орон ба ионы түгэлт гаргав.
Comparison of Air Pollution Measurement (Zuun Ail area)
Authors: B Bulgansaikhan , S Lodoisamba , D Shagjjamba , G Gerelmaa
Published: March 2023

Results of 2012-2013 PM2.5 and PM2.5-10 aerosol pollution study of Ulaanbaatar city, Mongolia is been presented. PM2.5 and PM2.5-10 aerosol fractions have been measured three times a week at the Zuun ail of Ulaanbaatar city. Weight of the samples and Black Carbon were determined at the Nuclear Research Center (NRC), National University of Mongolia. Element analyses have been performed at the NRC using XRF analysis. It includes Na, Mg, Al, Si, P,S, Cl, K,Ca, Ti, V,Cr,Co, Ni, Zn, Cu, As, Br, Sr, Ba, I, Hg, Pb. Average concentration of PM2.5-10 is 319 μg/m3, PM2.5 is 154μg/m3 in the year.
Properties of hydroxyapatite dopped by fullerenes and carbon nanotubes
Authors: Shpilevsky  , S.A. Filatov , G Shilagardi , P Tuvshintur , D Ulam-Orgikh , D Timur-Bator
Published: March 2023

Hydroxyapatite (HAP) - the material is close in composition to human bone tissue, therefore it is used for medical purposes to replace and treat patients or damaged parts of the body. The number of patients who need operations to restore bone integrity is quite large.
Барилгын материалын үйлдвэрлэлд ашиглагдаж буй цахилгаан станцын хаягдал үнсний цацрагийн судалгаа
Authors: Энхтуул C. , Ж. Тэмүүжин
Published: March 2023

Барилгын материалын үйлдвэрлэлд ашиглагдаж буй цахилгаан станцын хаягдал үнсний цацрагийн судалгаа
Дэлхийн нам температурын цацрагийн энергийг дулаанд хувирган ашиглах боломж
Authors: Ж. Далхсүрэн
Published: March 2023

Манай дэлхийн гадарга орчимын температур нь нам температурт харгалзах учираас уг гадарга нь урт долгионт цацраг буюу 5 мкм – 100мкм хүртэл долгионы урттай цацрагийг гаргадаг. Богино болон урт долгионт цацрагуудаар тодорхой хэмжээний энерги зөөгддөг. Хийн атом,молекулууд цацрагийн энергийг өөртөө шингээх замаар түүнийг дулааны энергид хувиргадаг онцлогтой. Дэлхийн гадаргаас 6м – 15м гүнд түүний абсолют температур дунджаар 278К –289К байх ба ийм температурын үед түүнээс гарах дулааны цацрагуудын долгионы урт нь 4мкм –80мкм–ийн завсартхаргалзана. Харин энэ завсарын цацрагуудаас хамгийн их энергитэй цацрагийн спектрт харгалзах долгионы урт нь 9мкм– 12мкм –ийн завсарт байдаг. Гэтэл нүүрсхүчлийн хийн молекулууд 13мкм – 17мкм,усны молекулууд 5мкм – 8мкм ба14мкм –50мкм, озоны молекулууд 8.5мкм – 10.3мкм ба 13мкм –14.5мкм долгионы урттай цацрагуудын энергийг 40%– 99% шингээх чадвартай юм. Иймд эдгээр хийнүүд дунджаар 278К –289К температурт байгаа дэлхийн гадаргаас гарч буй дулааны цацрагуудын нийт энергийн 70 орчим хувийг шингээж авах замаар цацрагийн энергийг дулааны энергид хувиргах боломжтой байна. Ийм учираас дээрхи хийнүүдийг ашиглан дэлхийн гадарга орчимын урт долгионт цацрагийн энергийг дулааны энергид хувирган ахуйн хэрэглээнд ашиглах боломж байна.
Электрон бүтцийн тооцоололд Торын Больцманы загварыг ашиглах тооцооллын тойм
Authors: M Г.Мөнхсайхан , Б.Одонтуяа  , Л.Хэнмэдэх  , Д. Наранчимэг  , До. Нямсүрэн
Published: March 2023

Энэхүү ажилд Нягтын функционалын онол болон кинетик онолын хоорондын шинэ уялдаа холбоог тодорхойлсон торын Больцманы аргын талаарх тоймыг харуулсан. Энэ аргад Кон-Шэмийн (KШ) тэгшитгэлүүдийг нэг бөөмийн кинетик тэгшитгэлд нийцсэн тогтвортой төлөвийн шийдийн макроскопик хязгаар хэмээн томъёолдог. Үүний зэрэгцээ электрон бүтцийн тооцоололд торын кинетик дөхөлтийг ашиглах үндсэн санааг авч үзсэн болно.
Влияние наноразмерного порошка диоксида кремния на физико- механические, прочностные характеристики лакокрасочного покрытия из эмали ХВ-16
Authors: В.Ц. Лыгденов  , А.В. Номоев  , С.П. Бардаханов  , Т.В. Ларина
Published: March 2023

В данной статье установлено влияние наноразмерного диоксида кремния марки на Таркосил на физико- механические, прочностные свойства, структуру полимерного лакокрасочного покрытия из эмали на основе перхлорвиниловой и глифталевой смол ХВ-16. Обнаружено увеличение прочности на истирание, твердости, модуляупругости лакокрасочного покрытия по сравнению с исходным. Методами атомно- силовой микроскопии, растровой электронной микроскопии, ИК спектроскопии проведен качественный и количественный анализ структуры полученных образцов лакокрасочных покрытий. Выявлено, что изменение структуры и повышение механических свойств покрытий обусловлено появлением новых структурообразующих центров в композиционном покрытии при введении наноразмерного диоксида кремния.
WSe2 –ийн гадаргуугийн сканнин туннелийн микроскопын судалгаа
Authors: Д Отгонбаяр , Г Мөнхсайхан , Б Одонтуяа , Д Наранчимэг
Published: March 2023

Энэ ажилд балк WSe2 –ийн гадаргуугийн шинж чанарыг сканнин туннелийн микроскопын (СТМ) тусламжтай судалсан. Судалгааны ажилд өндөр вакуумын камерт хуулалтын арга ашиглан атомын хэмжээний гөлгөр террас буюу шаталсан үет бүтэц бүхий WSe2 дээжийн цэвэр гадаргууг гарган авч гадаргуугийн атомуудын кристалл бүтэц болон гадаргууд үүссэн хоёр төрлийн гажгийг илрүүлсэн. Эдгээр гажгууд нь гадаргуугийн доор байрлах вольфрамын атомуудын үед үүссэн гажгууд болохыг тогтоосон болно.PACS numbers: 61.46.+w, 61.50.-f, 61.72.Ji, 61.82.Fk
Geoservice for solving the task of updating spatial data based on the results of state topographic monitoring
Authors: Brovko E.A. , Sofinov R.E.
Published: March 2023

The authors reveal the informational and functional contents of the geoservice, using the example of the proposed mechanism for updating spatial data using state topographic monitoring materials. The algorithm of a geoservice functioning based on the data obtained in the process of survey, detailed topographic monitoring and its further use as geoinformation services for solving the tasks of socio-economic, environmental, defense and national security of the Russian Federation is shown. The analysis of domestic experience in this field (the national spatial data system, the geoportal of the Federal Spatial Data Fund, the Public Cadastral Map, the Roscosmos Group of Companies, the “People’s Map”, i.e. Open Street Map on the Yandex Maps geoportal, etc.) enables determining the composition of geoinformation resources requiring periodic and operational updating. Creating and actualization of digital (electronic) topographic maps and other types of digital cartographic products in real time, using continuous topographic monitoring data, and presenting them to users through the geoservice “State topographic monitoring” is a promising scientific and practical direction for development of geoinformation mapping and infrastructure designed to spread relevant spatial data.
Seroprevalence and Clinical Characteristics of SARS-CoV-2 Infection in Children with Cystic Fibrosis
Authors: Hernandez Rafael , Hergenroeder Georgene , Faino Anna , Cogen Jonathan , Genatossio Alan , McNamara Sharon , Pascual Michael
Published: March 2023

Background: People with cystic fibrosis (PwCF) have chronic
lung disease and may be at increased risk of COVID-19-related morbidity
and mortality. This study aimed to determine seroprevalence and clinical
characteristics of SARS-CoV-2 infection in children with CF, and to
assess antibody responses following SARS-CoV-2 infection or vaccination.
Methods: Children and adolescents with CF followed at Seattle
Children’s Hospital were enrolled between July 20, 2020 and February 28,
2021. SARS-CoV-2 serostatus was determined on enrollment, at 6 and 11
months (+/-2 months) for nucleocapsid and spike IgG. Participants
completed intake and weekly surveys inquiring about SARS-CoV-2
exposures, viral/respiratory illnesses, and symptoms. Results:
Of 125 PwCF enrolled, 14 (11%) had positive SARS-CoV-2 antibodies
consistent with recent or past infection. Seropositive participants were
more likely to identify as Hispanic (29% vs 8%, p=0.04) and have
pulmonary exacerbations requiring oral antibiotics in the year prior
(71% vs 41%, p = 0.04). Five seropositive individuals (35.7%) were
asymptomatic, while six (42.9%) reported mild symptoms, primarily cough
and nasal congestion. Anti-spike protein IgG levels were approximately
10-fold higher in participants following vaccination compared with
participants who had natural infection alone (p < 0.0001) and
resembled levels previously reported in the general population.
Conclusions: A majority of PwCF have mild or no symptoms of
SARS-CoV-2 making it difficult to distinguish from baseline respiratory
symptoms. Hispanic PwCF may be disproportionately impacted, consistent
with racial and ethnic COVID-19 disparities among the general US
population. Vaccination in PwCF generated antibody responses similar to
those previously reported in the general population.
Toward Maximum Energy Density Enabled by Anode-Free Lithium Metal Batteries; Recent Progress and Perspective
Authors: Park Cheol-Young , Kim Jinuk , Lim Won-Gwang , Lee Jinwoo
Published: March 2023

Owing to the emergence of energy storage and electric vehicles, the
desire for safe high-energy-density energy storage devices has increased
research interest in anode-free lithium metal batteries (AFLMBs). Unlike
general LMBs, in which excess Li exists to compensate for the
irreversible loss of Li, only the current collector is employed as an
anode and paired with a lithiated cathode in the fabrication of AFLMBs.
Owing to their unique cell configuration, AFLMBs have attractive
characteristics, including the highest energy density, safety, and
cost-effectiveness. However, developing AFLMBs with extended cyclability
remains an issue for practical applications because the high reactivity
of Li with limited inventory causes severely low Coulombic efficiency,
poor cyclability, and dendrite growth. To address these issues,
tremendous effort has been devoted to stabilize Li-metal anodes for
AFLMBs. In this review, we highlight the importance and challenges of
AFLMBs. Then, we thoroughly review diverse strategies, such as modifying
current collectors, the formation of robust interfaces by engineering
advanced electrolytes, and operation protocols. Finally, a future
perspective on the strategy is provided to insight into the basis of
future research. We hope that this review provides a comprehensive
understanding by reviewing previous research and arousing more interest
in this field.
Modeling-based performance assessment of an indigenous macro-catchment water harvesting technique (Marab) in the Jordanian Badia
Authors: Castelli Giulio , Renzi Niccolò , Villani Lorenzo , Haddad Mira , Strohmeier Stefan , Din Muhi el , Widyan Jaafar Al , Bresci Elena
Published: March 2023

Water resources management is fundamental for rural communities in
drylands. Water Harvesting Technologies (WHT) intercept and store the
excess rainfall (surface runoff) in soils for increased plant available
water and agricultural productivity. The so-called ‘Marab’ WHT was
initially developed by Middle Eastern agro-pastoralists that reside or
commute in semi-arid and arid rangelands. The Marab WHT is a
macro-catchment measure consisting of earth dams and stone spillways
along the contours of a lowland depression or floodplain. Dependent on
the local context (i.e. climate, soil, management, etc.) the established
Marabs show highly-variable effectiveness. This study aims at filling
the knowledge gap on the WHT’s performance in changing environments by
simulating its hydro-agrological effects for different soils and
climatic conditions using the AquaCrop model. A case study performed for
a Jordanian Marab over three seasons (2019-2022) confirms its huge
improvement potential for barley production. Through Marab-farming,
barley production reached 8.37 t ha on average,
versus highly variable 0.34 t ha without the WHT.
The simulation-based assessment of soil textures identified that silty
soils have the largest potential for producing up to 9.25 t ha
barley, compared to 6.60 t ha
produced in clay soils. Assessing different climate scenarios, a slight
increase in daily average temperatures (+ 0.5°C) led to a considerable
production decline of 4-8%, while a significant reduction of
precipitation (-20%) decreased biomass production by a similar rate
(4-10%). This underlines the robustness of the ‘Marab’ WHT to rainfall
amount variation. However, simulations also highlight the sensitivity of
timing and frequency of flood events: removing the last and the first
flood event reduced biomass production by approximately 50% and 80%
respectively, while the barley fails to develop if both events were
suppressed.
Otosclerosis online: an analysis of quality, reliability and readability of otosclerosis information websites
Authors: Gargula Stephane , Rosa Ambre La , Ayache Denis , Daval Mary
Published: March 2023

Introduction: Several therapeutic options are usually discussed
for otosclerosis management. Patients seek medical advice from an ENT
specialist but are also increasingly using the internet for medical
issues. This study intends to assess readability and quality of websites
with information on otosclerosis. Materials & Methods: This is a
cross-sectionnal study performed in a tertiary care center. The results
of the first 2 pages of a Google search with the keyword
“otosclerosis” were reviewed by two independent investigators.
Readability was assessed with the Flesch–Kincaid Grade Level (FKGL),
Flesch Reading Ease Score (FRES) and Gunning Fog Index. For quality and
reliability assessment, the 16-items DISCERN instrument was used.
Spearman’s coefficient was used for correlations, and multivariate
analyses of variance were used to assess differences. Inter-rater
agreement was evaluated with concordance correlation coefficient.
Results: 18 websites were included. Two websites (11.0%) were
authored by academic institutions, 5/18 (28%) by government agencies,
6/18 (33%) by professional organizations and 5/18 (28%) were medical
information websites. The mean DISCERN score of the 18 websites was
40.2±8.4/80 (range, 23.5–54), corresponding to “fair” quality. The
mean FRES score was 43.27 ± 10.6, and the the mean FKGL was 11.43±2.30,
corresponding to “difficult to read”. The mean Gunning Fog index was
12.90±2.19 (range 9.81- 18.20), corresponding to a “college freshman”
level. Conclusions: This study shows that internet information on
otosclerosis has an overall low readability, while the quality is
heterogeneous and varies from “poor” to “good”. Efforts should be
made to improve the readability of otosclerosis websites.
Once-Weekly Basal Insulin Fc Demonstrated Similar Glycemic Control to Once-Daily Insulin Degludec in Insulin-Naive Patients With Type 2 Diabetes: A Phase 2 Randomized Control Trial
Authors: Bue-Valleskey Juliana M. , Kazda Christof M. , Ma Chenchen , Chien Jenny , Zhang Qianyi , Chigutsa Emmanuel , Landschulz William , Haupt Axel , Frias Juan P.
Published: March 2023

OBJECTIVE

Basal insulin Fc (BIF) (insulin efsitora alfa; LY3209590), a fusion protein combining a novel single-chain insulin variant with a human IgG Fc domain, is designed for once-weekly basal insulin administration. This phase 2 study assessed the safety and efficacy of BIF versus degludec in insulin-naive patients with type 2 diabetes (T2D) previously treated with oral antihyperglycemic medications.

RESEARCH DESIGN AND METHODS

During this randomized, parallel, open-label study, 278 insulin-naive patients with T2D were randomly assigned (1:1) to receive BIF once weekly or degludec once daily over the 26-week treatment period. Both groups were titrated to fasting glucose of 80–100 mg/dL (4.4 to <5.6 mmol/L). The primary end point was HbA1c change from baseline to week 26 (noninferiority margin 0.4%). Secondary end points included fasting blood glucose (FBG), six-point glucose profiles, and rate of hypoglycemia.

RESULTS

After 26 weeks of treatment, BIF demonstrated a noninferior HbA1c change from baseline versus degludec, with a treatment difference of 0.06% (90% CI −0.11, 0.24; P = 0.56). Both BIF and degludec treatment led to significant reductions in FBG from baseline. At week 26, the between-treatment difference for BIF versus degludec was 4.7 mg/dL (90% CI 0.1, 9.3; P = 0.09). The rate of level 2 hypoglycemia was low and not significantly different between treatment groups (BIF 0.22 events/patient/year, degludec 0.15 events/patient/year; P = 0.64); there was no severe hypoglycemia. The occurrence of treatment-emergent adverse events was also similar between BIF and degludec.

CONCLUSIONS

Once-weekly BIF achieved excellent glycemic control similar to degludec, with no concerning hypoglycemia or other safety findings.
Quality classification model with machine learning for porosity prediction in laser welding aluminum alloys
Authors: Rivera Joys S. , Gagné Marc-Olivier , Tu Siyu , Barka Noureddine , Nadeau François , Ouafi Abderrazak El
Published: March 2023

The growing implementation of aluminum alloys in industry has focused interest on studying transformation processes such as laser welding. This process generates different kinds of signals that can be monitored and used to evaluate it and make a quality analysis of the final product. Internal defects that are difficult to detect, such as porosity, are one of the most critical irregularities in laser welding. This kind of defect may result in a critical failure of the manufactured goods, affecting the final user. In this research, a porosity prediction method using a high-speed camera monitoring system and machine learning (ML) algorithms is proposed and studied to find the most performant methodology to resolve the prediction problem. The methodology includes feature extraction by high-speed X-ray analysis, feature engineering and selection, imbalance treatment, and the evaluation of the ML algorithms by metrics such as accuracy, AUC (area under the curve), and F1. As a result, it was found that the best ML algorithm for porosity prediction in the proposed setup is Random Forest with a 0.83 AUC and 75% accuracy, 0.75 in the F1 score for no porosity, and 0.76 in the F1 score for porosity. The results of the proposed model and methodology indicate that they could be implemented in industrial applications for enhancing the final product quality for welded plates, reducing process waste and product quality analysis time, and increasing the operational performance of the process.
Interrelation between the parameters of endogenous vascular regulation, oxidative stress and the markers of inflammatory response in COVID-19 patients while on extracorporeal membrane oxygenation
Authors: Klychnikova E. V. , Zhuravel S. V. , Ivanov I. V. , Nikitina O. V. , Tazina E. V. , Bulanov A. Yu. , Talyzin A. M. , Popugaev K. A. , Vladimirov V. V. , Petrikov S. S. , Bogdanova A. S.
Published: March 2023

Introduction. Extracorporeal membrane oxygenation has found wide application in clinical practice during the COVID-19 pandemic. Oxidative stress, endothelial dysfunction, and systemic inflammatory response syndrome play an important role in the pathogenesis of COVID-19. Our research was designed to study correlations in-between those factors and the impact of extracorporeal membrane oxygenation on them.Aim. The study of systemic inflammatory response and endothelial function in patients with COVID-19 during extracorporeal membrane oxygenation.Material and methods. In the course of a prospective study, we examined 100 COVID-19 patients aged 26 to 75 years, median 55 years [47;60], who were treated at the N.V. Sklifosovsky Research Institute for Emergency Medicine, using extracorporeal membrane oxygenation. As a control group (normal), 25 practically healthy people whose median age was 32 years [25;39] were examined. The function of the vascular endothelium was assessed by the content of nitric oxide stable metabolites in the blood serum and the level of angiotensin-converting enzyme. Next, the ratio of nitric oxide metabolite to angiotensin-converting enzyme level was calculated, reflecting the imbalance between endotheliumdependent vasodilation and vasoconstriction. To assess the severity of oxidative stress in blood serum, malondialdehyde was determined as a marker of lipid peroxidation. The state of the antioxidant system was assessed in terms of total antioxidant status of blood serum. The presence of an imbalance in the system of lipid peroxidation and the antioxidant system total antioxidant status was judged by the oxidative stress coefficient, i.e. the ratio of malondialdehyde to the total antioxidant activity.Results. The analysis showed the presence and progression of endothelial dysfunction, impaired vascular regulation, activation of free radical processes, the presence of an imbalance in the prooxidant/antioxidant system, as well as the progression of the inflammatory process with a decrease in the level of markers of the COVID-19 severity.Conclusion. Further studies of the correlation between endothelial damage and the severity of the systemic inflammatory response syndrome may be of fundamental importance for explaining the pathophysiological mechanisms of COVID-19 course and developing new treatments for such patients.
Publication activity indicators of the Moscow Healthcare Department organizations in the subject area "Transplantation"
Authors: Aksenova E. I. , Kamynina N. N. , Tarkhov K. Yu.
Published: March 2023

Background. Bibliographic analysis for the period 2017–2022 showed an extremely small number of literary sources (scientific publications) in both foreign and domestic periodicals, which would cover issues related to the consideration, study and/or analysis of any aspects of publication activity in the field of transplantology at the global, national and regional levels or in with respect to specific organizations, journals and authors. In Russian periodicals, the objects of research are often either various countries of the world (in comparative characteristics with Russia), or medical universities of the Russian Federation, or scientific medical organizations of federal designation, while there is a complete absence or a small number of publications devoted to the issues of publication activity of organizations at the level of the city of Moscow.Aim. Conducting a scientometric study to characterize, analyze and evaluate the publication activity of the Moscow Healthcare Department organizations in the subject area "Transplantation".Material and methods. The study was carried out for the subject area "Transplantation" using analytical platform SciVal for more than 10 quantitative and shared scientometric indicators (from 2019 to 2021) for 55 organizations from the categories of research institutes, scientific and practical centers and city clinical hospitals subordinated to the Moscow Healthcare Department.Results and discussion. The main scientometric indicators (in quantitative and fractional ratio) characterizing the publication activity over a three–year period – from 2019 to 2021 – in the subject area "Transplantation" in organizations subordinate to the Moscow Healthcare Department.Conclusion. It is shown that in the subject area "Transplantation" during the period under review, positive growth and changes in scientometric indicators such as the total number of publications, the number of publications in 1st–2nd quartiles, the number of publications in national and intraorganizational collaboration are observed for the Moscow Healthcare Department organizations.
Favorable outcome of pregnancy in a kidney and pancreas recipient
Authors: Romanov S. V. , Pauzina O. A. , Kukosh V. M. , Vasenin S. A. , Murtazalieva M. S. , Abaeva O. P. , Evdokimova K. V.
Published: March 2023

The patient's anamnesis, the peculiarities of the course of pregnancy, delivery in a kidney and pancreas recipient have been described. The results of the patient's follow-up for nine months after delivery are presented. The authors emphasize that the management of pregnancy in a woman after organ transplantation is possible only with the effective interaction of obstetricians, gynecologists, and transplantologists.
Estimation of Leachate Distribution Around the Bakau Besar Landfill in Mempawah Regency Using the Self-Potential Method
Authors: Muliadi Muliadi , Muhardi Muhardi , Zulfian Zulfian
Published: March 2023

Leachate is a liquid that seeps into piles of garbage and can carry dissolved materials resulting from the decomposition process of the waste. The leachate distribution can cause groundwater contamination around the landfill. This study aims to map leachate distribution around the landfill of Bakau Besar in Mempawah Regency. Identification of leachate flow is carried out based on the distribution of potential values on the surface using the self-potential (SP) method. Measurements were carried out in a fixed-base configuration using two electrodes, one electrode at the reference point (base) and the other electrode was moving along the track (rover) to measure the potential value at the measurement point. Measurements in the field apply six lines with a length of 150 m each. The distance between the lines is 10 m, and the electrode distance is 10 m. The results showed that the potential value obtained was -17.5 mV to 12.86 mV. The accumulation of leachate flow is interpreted as having a relatively low potential value. In addition, the high potential is located in the north, while the low potential is in the south of the study site. Thus, the leachate flow is thought to have accumulated in the south near the landfill of Bakau Besar.
E-nose Application With Chemometrics for Monitoring Kombucha Tea Fermentation Process
Authors: Sumanto Budi , Idianingrum TW Yessi , Humaira Shafura , Lestari Budiani Ratna , Arrofiq Muhammad
Published: March 2023

Kombucha tea is a fermented tea drink using Symbiotic Culture of Bacteria and Yeast (SCOBY), which is currently being widely produced and consumed because of its health benefits. Kombucha tea has a great opportunity on a global industrial scale, so it is necessary to monitor the production process. This paper uses system sensor gas array or eNose to distinguish volatiles delivered amid the maturation preparation and to think about the method stages using the linear discriminant analysis (LDA) strategy. The results obtained from LDA showed that the 1st to 6th day was the growth process of the SCOBY mushroom, while the 7th to 12th day was the ripening process of kombucha to be consumed. The stages of the kombucha fermentation process are classified using three classification methods, namely KNN, CART, and LDA. The results show the highest accuracy obtained by LDA, with an accuracy of 83.33%. These results can be agreed that eNose can be used as a measuring tool for monitoring the fermentation process and testing the quality of kombucha tea.