Luminescence properties and time-resolved spectroscopy of rare-earth doped SrMoO4 single crystals

The work of V. Pankratova was supported by the financial support of Scientific Research Project for Students and Young Researchers (SJZ/2020/05) realized at Institute of Solid State Physics, University of Latvia. The Institute of Solid State Physics, University of Latvia as the Center of Excellence has received funding from the European Union’s Horizon 2020 Framework Programme H2020-WIDESPREAD-01-2016-2017-TeamingPhase2 under grant agreement No. 739508, project CAMART2.Luminescence properties of nominally pure and doped with Eu3+ and Pr3+ ions SrMoO4 single crystals grown by the Czochralski method have been studied. Thermal quenching of intrinsic emission of pure and doped SrMoO4 single crystals has been observed, as well as a correlation of thermal quenching activation energies with rare-earth ion concentration has been observed. Tunable laser was used to study time-resolved luminescence in a range from 10 K to room temperature. The effect of dopant nature and concentration on intrinsic emission and decay kinetics has been elucidated. --//-- Viktorija Pankratova, Elizaveta E. Dunaeva, Irina S. Voronina, Anna P. Kozlova, Roman Shendrik, Vladimir Pankratov, Luminescence properties and time-resolved spectroscopy of rare-earth doped SrMoO4 single crystals, Optical Materials: X, Volume 15, 2022, 100169, ISSN 2590-1478, https://doi.org/10.1016/j.omx.2022.100169. Article published under the CC BY-NC-ND licence.Scientific Research Project for Students and Young Researchers (SJZ/2020/05); the Institute of Solid State Physics, University of Latvia as the Center of Excellence has received funding from the European Union’s Horizon 2020 Framework Programme H2020-WIDESPREAD-01-2016-2017-TeamingPhase2 under grant agreement No. 739508, project CAMART2

New trophic classification of wood-destroying fungi the case of community of pathogenic polypore fungi types on Pedunculate oak

Based on the generalization of experimental data obtained during the practical study of the trophic specialization of wood-destroying fungi from the commonness of PTH on oak in the oak forests of the south-west of the Central Russian Upland, a new ecotrophic classification has been developed, including the following groups of wood-destroying fungi: biotrophic pathogens, saprotrophic pathogens, pathogenic saprotrophs, non-pathogenic saprotroph

Trans-species relation in communities of pathogenic Polyporaceae on pedunculate oak Quercus robur L

In the process of research phytopathological and mycocenological methods were used As a result of the research, real trans-species relation were revealed in the most common and frequently occurring types of PPF on oak within various communities: Mutually positive type relationships based on the proto-operation were found between Laetiporus sulphureus and Fistulina hepatica. Neutral type relationships were found in between Fistulina hepatica and Fomitiporia robusta, Laetiporus sulphureus and Fomitiporia robust

Opportunities for the analysis of the spatial ecological structure of the mycobiota of macromycetes of a natural-territorial entity (the case of the Botanical Garden of Belgorod University, Belgorod, Russia)

On the basis of direct observations, the general principles of the organization of the mycobiota of the macromycetes of the natural-territorial formation "Botanical Garden" of Belgorod State University (Belgorod, Russian Federation) have been clarified. Based on the clarified principles, a scheme of their spatial ecological organization has been constructed: mycobiota - mycohore (mycocenosis, mycoaggregation) - mycosinium-3 - mycocenocells - mycocell. The obtained results can be used to study the spatial ecological organization of mycobiota macromycetes of other natural-territorial formation

Электронно-библиотечная система как средство саморазвития студентов цифрового поколения Z (на примере изучения курса «Основы вожатской деятельности»)

The digital library system of universities is examined by the example of the learning course “The basic knowledge for summer camp leaders”. The theory of generations, socio-psycological characteristics of learning styles, and corresponding pedagogical methods and technologies in education and library and information services provided to the generation Z users, are discussed. The generation’s characteristics are: hypermobility, creativity and mental quickness, realistic attitude, rapid moving into adulthood, and the fact that they are not enthusiastic about hand writing. At the same time, the young adults are characterized by clip way of thinking, lack of motivation, laziness, no love for reading, communication through mems and emojies, low tolerance and responsibility. Within the digital information environment, the generation Z processes clip information in no time and, hence, they are not able to act thoughtfully, to concentrate and to analyze facts. These characteristics are admitted by psychologists, physiologists, sociologists, and pedagogues. New teaching methods and technologies have to be designed, learning and recreational information content based on digital convergent approach to be generated. The significance of cooperation and interaction between professionals in the education, information and library spheres is emphasized. The study is accomplished within teaching the optional course “The basic knowledge for summer camp leaders”.Рассмотрена электронно-библиотечная система в вузе на примере использования учебного курса «Основы вожатской деятельности». Представлена теория поколений, обозначены социально-психологические особенности восприятия поколения Z и обусловленные ими педагогические методы и технологии, применяемые в образовательном процессе и библиотечно-информационном обслуживании представителей этого поколения. Выделены их отличительные черты: гиперподвижность, креативность и живость мышления, трезвое представление о жизни, быстрое взросление, они не пишут от руки. Вместе с тем им свойственны так называемая клиповость восприятия, отсутствие мотивации, лень, нелюбовь к чтению, общение с помощью мемов и эмоджи, плохо развитые терпеливость и чувство долга. Постоянно находясь в информационно-цифровой среде, поколение Z научилось быстро обрабатывать «клиповую» информацию, вследствие чего его представителям не свойственны вдумчивость, способность сосредоточиваться, анализировать факты. Эти особенности поколения Z признаны психологами, физиологами, социологами, педагогами. Поэтому необходимо разрабатывать новые методы и технологии обучения, создавать информационно-образовательный и информационно-рекреационный контент, основанный на электронно-конвергентном подходе. Подчёркнута важность сотрудничества и взаимодействия специалистов в области образования, информатики и библиотечного дела. Исследование проведено в процессе преподавания курса по выбору «Основы вожатской деятельности»

ADAPTATION OF IN VITRO BLACKBERRY PLANTS TO FIELD ENVIRONMENTS

Iability of blackberry accessions in vivo after in vitro culture storage was analyzed. Phenological development phases of adult plants, crop yield and water regime were studied in the field. Adaptability of the accessions to adverse environmental factors (frost, drought and heat resistance, resistance to fungal infections) was evaluated

New approaches to registration and conservation of domestic cultivars of berry crops in the VIR Genebank on the example of red raspberry and black currant

A collection of nomenclatural standards is being created at VIR for domestic cultivars of various crops in accordance with the International Code of Nomenclature for Cultivated Plants (ICNCP). A new complex strategy was proposed for vegetatively propagated crops for registering domestic cultivars received from their authors in the VIR genebank. In addition to the creation of nomenclature standards, the strategy includes the development of a genetic passport of a cultivar and the use of biotechnological methods to preserve explants (buds, meristems) isolated from plant material transferred by breeders to the VIR Herbarium. This approach can be used for any vegetatively propagated crop applying a protocol developed specifically for an individual crop. For raspberry and black currant varieties, the collecting of plant material, its preparation for the registration of nomenclature standards and the preservation of viable samples under controlled in vitro conditions have specific features. This article provides detailed protocols for performing the mentioned work for raspberry and black currant varieties. In addition, the article summarizes the first results of the implementation of our proposed strategy on the example of domestic raspberry and black currant varieties created in various breeding centers of Russia. Three years of joint work of VIR researchers and breeders from four breeding centers in five regions of the country have resulted in creation of nomenclature standards for 20 raspberry varieties, as well as for five black currant varieties bred at VIR. Thirteen samples of raspberry varieties and four of black currant varieties, genetically identical to nomenclature standards, were introduced into in vitro culture; four raspberry cultivars have been placed in the VIR cryobank for the long-term cryopreservation

Опыт создания личного кабинета студента – личной электронной библиотеки в РГАУ-МСХА им. К. А. Тимирязева

The article is devoted to the currently topical topic of using the electronic library system by means of creating a student's personal account – a personal electronic library. The problem of using information technologies to provide students with high-quality educational information is currently coming to the fore due to the emergence of a large flow of information and the lack of criteria for its selection among students. The purpose of the publication is to acquaint readers with the results of work on the development of a personal electronic library of a university student, to provide students with educational materials in full, as well as with the results of a study of the effectiveness of using a personal account in the process of teaching students. To achieve this goal, the authors carried out experimental work, consisting of three modules: basic, theoretical and intellectual, as well as experimental work to establish the influence of the developed personal electronic library on the level of educational motivation of students, as well as its relationship with academic performance. The results of the study show that the use of a personal electronic library increases the educational motivation of students to study the subject, and also positively affects the academic performance of students, improving the quality of education. The practical significance of the work lies in the creation of a student's personal electronic library based on the electronic library system of the RSAU-Moscow Agricultural Academy named after K. A. Timiryazeva, which can be used in teaching university students.Статья посвящена использованию электронно-библиотечной системы с помощью личного кабинета студента – личной электронной библиотеки. В связи с появлением большого потока информации и отсутствием у студентов критериев её отбора проблема использования информационных технологий для обеспечения обучающихся качественной учебной информацией выходит на первый план. Статья знакоимт с результатами разработки личной электронной библиотеки, обеспечивающей студентов учебным материалом в полном объёме, а также с исследованием эффективности использования личного кабинета в процессе обучения. Авторы провели экспериментальную работу, состоящую из трёх модулей: базового, теоретического и интеллектуального, а также установили влияние личной электронной библиотеки на уровень учебной мотивации студентов и успеваемости. Результаты исследования показали, что личная электронная библиотека повышает учебную мотивацию студентов, положительно влияет на их успеваемость, повышая качество образования. Практическая значимость работы заключается в создании личной электронной библиотеки студента на базе электронно-библиотечной системы РГАУ-МСХА им. К. А. Тимирязева. Библиотека студента может использоваться при обучении студентов вуза