bluuebunny/crossref_metadata_2025 huggingface dataset:
New data on the distribution of communities of hairy feather grass steppes in the Kursk Region
Authors:   Kursk State University, Poluyanov Alexander
Published: May 2023

The article provides data on new locations of communities of the steppes with Stipa capillata L. in the Kursk Region. The described communities are classified as associations Gypsophilo altisssimae–Stipetum capillatae Poluyanov 2009 and Falcario vulgaris–Stipetum capillatae Poluyanov in Poluyanov et Averinova 2012. The new subassociation Falcario vulgaris–Stipetum capillatae thymetosum marschalliani subass. nov. is established. In communities of the ass. Gypsophilo altissimae–Stipetum capillatae the indicators of the projective cover of Stipa capillata have increased, while the phytocoenotic role of S. pennata, on the contrary, has noticeably decreased. The species richness of communities has decreased and the homogeneity of vegetation has increased. A group of weed and weed-steppe species, such as Conyza canadensis, Echium vulgare, Daucus carota, Poterium sanguisorba, Lactuca serriola, Stachys annua, etc., has fallen out of the coenoflora of the syntaxon. Is is caused by the cessation of grazing, which led to constant disruption of phytocoenoses, contributed to the penetration of weed species into them and an increase in floristic heterogeneity, as well as to general climatic changes leading to xerophytization of habitats and to the strengthening of the phytocoenotic positions of Stipa capillata.
The records of lichen indicators of biologically valuable forest landscapes in Smolensk Smolenskoye Poozerye Park (Smolensk Region, Russia)
Authors:   Institute of Forest Science of RAS, Muchnik Evgenia , Tikhonova Elena ,   Center of Forest Ecology and Productivity of RAS, Titovets Anastasia ,   Institute of Forest Science of RAS
Published: May 2023

159 forest relevés on sample plots (400 m2 each) at Smolenskoye Poozerye National Park were collected during the period from 2017 till 2022. Lichen diversity of the plots was analyzed simultaneously. 25 lichen species from the preliminary list of indicators of biologically valuable forest landscapes in the coniferous-broadleaved subzone of the European part of Russia were found on 25 plots. Two more species (Pyrenula nitida and Toniniopsis separabilis) were added to the list based on their compliance with the criteria of indicator species. All 25 plots with indicator species are characterized by forest communities with high stand age without disturbance or with those happened long time ago. Most indicator species and their occurrence were found at «conditionally indigenous» coniferous-broadleaved forests on unplowed areas with edificatores of 85 years and older. The small-leaved forests covering the old-logged areas bared almost the same diversity of indicator species but twice less abundant. The old spruce and pine forests subjected to various disturbances were the poorest in both indicator species diversity and numbers. Three lichen species from the Federal Red Data Book ‒ Lobaria pulmonaria, Menegazzia terebrata and Usnea florida ‒ were identified on several sample plots located inside the core protected zone of the National Park. Several species ‒ Carbonicola anthracophila, Cladonia glauca, Cladonia norvegica, Menegazzia terebrata, Ochrolechia androgyna, Pertusaria coccodes, Pertusaria coronata, Pertusaria leioplaca, Phlyctis agelaea, Thelotrema lepadinum, and Usnea glabrescens – are recommended to be included into the Red Data Book of the Smolensk Region.
Abnormalities of embryo structures in Donbass indicator plants
Authors:   Donetsk National University, Safonov Andrey
Published: May 2023

Examples of atypical structure of the embryonic apparatus of indicator plants in the Donbas are highlighted. Many years of experience in conducting phytoindication experiments (1998–2022) made it possible to identify accounting sites with contrasting geochemical characteristics and monodominant ingredient pollution. Registered abnormalities are considered as variants of extreme structural polymorphism of plants of natural flora under conditions of specific stress of the technogenic environment. For phytotesters Amaranthus retroflexus L., Atriplex patula L., Capsella bursa-pastoris (L.) Medik., Diplotaxis muralis (L.) DC., Polygonum aviculare L., Reseda lutea L. and Senecio vulgaris L. integral indicators of the state of generative systems (2019–2021) were calculated according to the structure of pollen, the frequency of occurrence of teratological manifestations in the embryonic apparatus and successful seed germination. Examples of specific manifestations of degradation and neoplasms in the structures of plant embryonic tissues are given. The morphological experiment was implemented in the ascertainment of contrasting levels of dominant pollutants, which makes it possible to recommend specific features of plant structure as markers for ecological monitoring of natural environments. An assumption about the influence of individual tissue transformations in germinal structures on the quality of seed material in general and on the methods of formation of adaptive heterospermia was made.
Vascular plants from the monitoring list of the Red Data Book of the Kursk Region in the Central Chernozem Reserve
Authors:   The Central Chernozem State Nature Biosphere Reserve  named after Professor V. V. Alyokhin, Zolotukhin Nikolai , Zolotukhina Irina ,   The Central Chernozem State Nature Biosphere Reserve  named after Professor V. V. Alyokhin, Mitrakova Vera ,   The Central Chernozem State Nature Biosphere Reserve  named after Professor V. V. Alyokhin
Published: May 2023

In the Central Chernozem Reserve, 80 species of vascular plants out of 135 species included in the monitoring list of the Red Data Book of the Kursk Region are noted. The occurrence of these species on the sites of the reserve is shown. The data of the specific observations of species in 2021–2022 are given.
III Interregional scientific conference «Actual issues of studying the vegetation cover of the Southern Nechernozemye of Russia» (Russia, Bryansk, Bryansk State University named after Academician I. G. Petrovsky, October 29, 2022)
Authors:   Bryansk State University named after Academician I.G. Petrovsky, Ignatichev Gleb
Published: May 2023

The chronicle is dedicatet to the III Interregional scientific conference «Actual issues of studying the vegetation cover of the Southern Nechernozemye of Russia» (Russia, Bryansk, Bryansk State University named after Academician I. G. Petrovsky, October 29, 2022).
Phytocoenotic activity of species of the genus Rumex L. in floodplain and dry meadows in the Bryansk Region
Authors:   Bryansk State University named after Academician I.G. Petrovsky, Bulokhov Alexey
Published: May 2023

In the article the phytocoenotic activity of species of the genus Rumex L. in the space of 5 syntaxa of meadow vegetation in the Bryansk Region assessed. Based on geobotanical materials collected in 2018–2022 two new associations and one subassociation were established, for which high activity of Rumex acetosella and R. thyrsiflorus was revealed. The maximum activity (V3–5) of R. acetosella is characterized for the ass. Koelerio delavignei–Festucetum rubrae Rumex acetosella var., R. thyrsiflorus – the ass. Trifolio arvensis–Rumicetum thyrsiflori (V1–5) and the ass. Kadenio dubiae–Rumicetum thyrsiflori (V5). R. acetosella reaches the highest abundance-coverage on dry and poor soils, while R. thyrsiflorus naturally increases the abundance-coverage under more mesophytic conditions. High activity of R. acetosella and R. thyrsiflorus was revealed in grass plant communities in xerophytized river floodplains. This change in the moisture regime against the background of a reduction in the duration and height of floods, as well as the lack of haymaking and grazing in floodplain locations in recent decades, contributed to an increase in the activity of the studied species. In the future, if the trend towards xerophytization of the floodplains persists, we can expect the stable positions of these species to remain in meadow grass stands.
Flora of Bryansk on the iNaturalist platform
Authors:   Bryansk State University named after Academician I.G. Petrovsky, Krapivin Artur , Panasenko Nikolay ,   Bryansk State University named after Academician I.G. Petrovsky, Matuzov Alexey ,   Bryansk State University named after Academician I.G. Petrovsky
Published: May 2023

The article discusses the current level of species diversity of the flora of the city of Bryansk, on the base of the iNaturalist platform. In the project «Flora of Bryansk» 942 species of vascular plants are registered. A critical analysis of the list of species was carried out, thr conclusions about the dynamics of the flora of the city were made. As a result, the studies flora of Bryansk discovered previously unknown locations of rare species of vascular plants, included in the Red Data Book of the Bryansk Region (Krasnaia..., 2016), and a list of species requiring additional observation and monitoring.
K. S. Dubenskiy herbarium collection from 1896–1919
Authors:   Tula State Lev Tolstoy Pedagogical University, Svetasheva Tatiana , Khoroon Ludmila ,   Tula State Lev Tolstoy Pedagogical University, Zatsarinnaya Dina ,   Branch of the «Tula Museum Association», Lakomov Alexander ,   Branch of the «Tula Museum Association»
Published: May 2023

During the implementation of the project for the digitization of the vascular plant herbarium of the Tula Region (RFBR grant 19-44-710002, DS/309), the herbarium collection of K. S. Dubensky, kept in the funds of the Tula Museum Association, was examined. The herbarium collected in 1896–1919 today has museum-historical as well as general biological and partly evolutionary significance, since it reflects changes in the regional flora that have occurred over the past century. The collection contains 484 species of vascular plants herbarium specimens belonging to 360 species, 60 families, 30 orders, 3 classes of the Tracheophyta. There are 2 species which are not listed in the Conspect of the flora of the Tula Region (Sheremet’eva et al., 2008), 2 previously common species have been observed extremely rarely in the last 30 years, 6 species are included in the Red Data Book of the Tula Region (Krasnaia…, 2020), 3 species are in the Appendix of the Red Data Book.
To the syntaxonomy of artificial forests of the city of Kursk
Authors:   Kursk State University, Arepieva Ludmila , Poluyanov Alexander ,   Kursk State University
Published: May 2023

Geobotanical survey and classification of communities of oak plantations of the city of Kursk has been carried out. The described phytocoenoses are attributed to the non-rank community Fraxinus pennsylvanica–Quercus robur within the order Carpinetalia betuli, whose species are most represented in the coenoflora of this syntaxon. Variants with thr differences in the species composition and habitat conditions have been established in the community: typica, Lonicera caprifolium, Robinia pseudoacacia. Lonicera caprifolium is dominant in the phytocoenoses of var. Lonicera caprifolium and has the characteristics of an aggressive invasive plant. It forms a dense cover in the grass layer and suppresses shrubs and woody growth. Communities of var. Robinia pseudoacacia are characterized by a high closeness of the crowns of the shrub layer formed by Robinia pseudoacacia. The grass layer in them is poorly developed due to the allelopathic effects of this invasive species. The conducted research makes it possible to assess the current state of the artificial forests of the city of Kursk and monitor changes in their composition and structure.
Lichens and myxomycetes of floodplain oak forests of the reserve «Lipichanskaya Pushcha» (Grodno Region, Republic of Belarus)
Authors:   Belarusian State University, Yatsyna Aleksander , Moroz Evgeny ,   V. F. Kuprevich Institute of Experimental Botany of the NAS of Belarus
Published: May 2023

Based on studies conducted in 2021 and 2022, the authors compiled a list of lichens, closely related fungi and myxomycetes of floodplain oak forests of the «Lipichanskaya Pushcha» reserve (Republic of Belarus, Grodno Region). The annotated list includes 148 species: 118 species of lichens, 5 – non-lichenized saprotrophic fungi, 3 – lichenophilic fungi and 22 myxomycetes. The myxomycete Hemitrichia calyculata was recorded for the territory of Belarus for the first time. Lichen species Calicium adspersum, Cetrelia cetrarioides, Chaenotheca chlorella, Hypotrachyna revolutа and Lobaria pulmonaria are included in the Red Data Book of Belarus and are listed for the first time for the reserve «Lipichanskaya Pushcha». The indicator lichens of old-growth oak forests include 19 species.
Validation of syntaxa of forest and shrub vegetation of the Salair ridge (Altay-Sayan Mountains)
Authors:   Central Sibeian Botanical Garden of the SB RAS, Lashchinskii Nikolay
Published: May 2023

The article presents the validation of forests and shrub vegetation syntaxa established by author for the Salair ridge (Altay-Sayan mountain system). Unvalid classification units are validated according to the International Code of the Phytosociological Nomenclature (Theurillat et al., 2021): 10 associations, 10 subassociations and 1 alliance of the classes Brachypodio pinnati–Betuletea pendulae Ermakov, Korolyuk et Lashchinsky 1991, Asaro europaei–Abietetea sibiricae Ermakov, Mucina et Zhitlukhina in Willner et al. 2016, Alnetea glutinosae Br.-Bl. et Tx. 1943 и Scheuchzerio palustris–Caricetea fuscae Tx. 1937. The main reason of the invalidity of original publications: nomenclature types were published without Latin holotypus (Art. 5a).
Syntaxonomy and ecology of the swamp sphagnum pine forest in the Southern Nechernozemye of Russia
Authors:   Bryansk State University named after Academician I.G. Petrovsky, Semenishchenkov Yury , Ignatichev Gleb ,   Bryansk State University named after Academician I.G. Petrovsky, Teleganova Victoriya ,   Parks directorate of the Kaluga Region, Bulokhov Alexey ,   Bryansk State University named after Academician I.G. Petrovsky, Shapurko Anton ,   Bryansk State University named after Academician I.G. Petrovsky, Abadonova Marina ,   National park "Orlovskoye Polesye"
Published: May 2023

The article characterizes the phytocoenotic diversity and ecological features of the swamp sphagnum pine forests of the Southern Nechernozemye of Russia on the basis of author's geobotanical materials from different years and discusses the issues of their syntaxonomy. These communities correspond to the widespread in Europe ass. Vaccinio uliginosi–Pinetum sylvestris de Kleist 1929. Based on an array of 108 relevés, including 89 unpublished, 5 variants were established as part of 2 subassociations. Based on a comparative floristic analysis for the discussed association and subassociations, regional combinations of diagnostic species were compiled. Floristic features are characterized and statistically significant differences in the ecological regimes of syntaxa habitats are demonstrated. In accordance with the results of DCA-ordination, the factors of light, substrate moisture, reaction, and richness in mineral nitrogen make a significant contribution to the differentiation of syntaxa at the level of subassociation and variant.
About the distribution and status of coenopopulations of rare species of lichens in the Rostov Region
Authors:   Southern Federal University, Ermolaeva Olga , Zakhvatova Tatiana ,   Landscape company «Klever»
Published: May 2023

The paper summarizes the accumulated data on the distribution and status of coenopopulations of 5 lichen species listed in the Red Data Book of the Rostov Region: Cetraria steppae, Cladonia foliacea, C. magyarica, Xanthoparmelia pulla, Thalloidima sedifolium. Thalloidima physaroides detected for the first time for the territory of the Rostov Region. In the region under study, 32 new localities of Cetraria steppae, 20 of Cladonia foliacea, 20 of C. magyarica, 15 of Xanthoparmelia pulla, 7 of Thalloidima sedifolium, and 11 of Th. physaroides were identified. The limiting factors for the listed species are both natural factors (low competitive ability, narrow ecological amplitude, low density, and number of coenopopulations) and anthropogenic factors.
About the new record of the rare species Neottianthe cucullata (L.) Schleichter (Orchidaceae) in the Bryansk Region
Authors:   Branch of «Roslesinforg» «Zaplesproekt», Silchenko Ivan , Silchenko Ivan ,   Timber company «Navlya»
Published: May 2023

In the course of a geobotanical survey of the forests of the Klyukovensky district forestry in the Bryansk Region, the author discovered a new locality of the rare species Neottianthe cucullata (L.) Schleichter (Orchidaceae). To identify the phytocoenotic relationships of the studied species, relevés of the forest vegetation were carried out, which is assigned to the association of acidophylous herbaceous pine-oak forests of Polesye landscapes of the Southern Nechernozemye of Russia Vaccinio myrtilli–Quercetum roboris Bulokhov et Solomeshch 2003. The main recommendation for the protection of the species is the maximum limitation of the impact of anthropogenic factors (clear felling, collection of plants, trampling, fires) by creating specially protected natural areas and allocating especially protective forest areas during forest management in places of growth of N. cucullata.
A noteworthy find of a rare species Paeonia anomala L. (Paeoniaceae) in the Tyumen urban district (Western Siberia)
Authors:   Tyumen State University, Khapugin Anatoliy , Senchugova Maria ,   Tyumen State University
Published: May 2023

In this report, we present the find of Paeonia anomala L. (Paeoniaceae), a species included in the Red Data Book of the Tyumen Region (Krasnaia…, 2020). All locations, known earlier, have been found northwards of the presented finding. In 2022, P. anomala was found in the pine forest experiencing anthropogenic pressure. The origin of the new location is related to the unintentional penetration of the species.
In memory of Eduard Mikhailovich Velichkin
Authors:   Bryansk City Lyceum N 1 named after A. S. Pushkin, Klyuev Yury
Published: May 2023

The report is dedicated to the memory of the famous Russian botanist, Ph. D. in Biological Sciences, Associate Professor Eduard Mikhailovich Velichkin, whose life and scientific work is closely connected with the Bryansk State University named after Academician I. G. Petrovsky.
Revitalisasi Peran Filsafat sebagai Proses Transformasi Masyarakat Multikultural
Authors: Juwaini Juwaini
Published: May 2023

Philosophical thought has implications for the process of societal transformation, encompassing both the development of science and technology and the development of multicultural societies themselves. This study aims to examine how philosophy plays a role in the transformation of multicultural societies and the position of philosophy within the social framework of a multicultural society. A qualitative approach with a literature review model is employed in this study. The findings of this study demonstrate that multicultural societies in Indonesia have undergone transformation parallel to global advancements in science, technology, and societal progress. Consequently, the study of philosophy needs to be revitalized both academically and sociologically. There are three crucial points that require revitalization, namely through the three pillars of El: social philosophy's eligibility, the elimination of perennialistic thinking, and the elaboration of progressive multicultural philosophy.

Abstrak

Pemikiran filsafat memiliki implikasi terhadap proses transformasi masyarakat, baik itu perkembangan ilmu pengetahuan dan teknologi maupun perkembangan masyarakat multikultural itu sendiri. Kajian ini bertujuan untuk mengkaji tentang bagaimana filsafat berperan dalam transformasi masyarakat multikultural dan bagaimana kedudukan filsafat dan tatanan sosial masyarakat yang multikulturalistik. Kajian ini menggunakan pendekatan kualitatif dengan model studi kepustakaan.  Kajian ini menunjukkan bahwa masyarakat multikultural di Indonesia telah bertransformasi seiring dengan perkembangan dunia, dan perkembangan ilmu pengetahuan dan teknologi. Oleh karena itu, studi filsafat perlu direvitalisasi, baik secara akademis ataupun sosiologis. Ada tiga poin penting yang perlu direvitalisasi, yaitu melalui tiga pilar El; eligibilitas filsafat sosial, eliminasi berpikir perenialistik, dan elaborasi filsafat multikulturalisme progresif.
Using astronomical leveling in the modern geodetic support system
Authors: Murzabekov M.M. , Fateev V.F. , Popadyev V.V.
Published: May 2023

With the advent of zenith camera, it became possible to improve the accuracy (up to 0,1″) and efficiency (no more than an hour) of measuring the plumb line deviation components at the point where the device is located in real-time mode. This enables measuring the components of the mentioned deviation at 4–12 or more points, depending on the season, during one observational night. Zenith camera is field-based, relocatable and can quantify the required components with any given discreteness, the process is fully automated. This makes the possibility of using the well-known method of astronomical leveling in a new way to define the height differences of the quasi-geoid. With a mistake in computing the deviation of a plumb line of 0,2″, the error in determining the elevation of the quasi-geoid heights is less than 1 mm at a kilometer distance between the points. This indicator is comparable with miscalculating of existing levels. In this case, there is no need for direct visibility between measurement points, computations can be performed between unrelated spots, and the distances between them can be kilometers or dozens of them. The authors present reviews of works on the use of zenith camera in creating quasi-geoid height models, develop the theory of astronomical leveling, consider its errors, and compare it with other leveling methods.
Non-Muslims' Intention to Consume Halal Food in Indonesia
Authors: Lubis Arowadi , Setyono Joko
Published: May 2023

The effect of religiosity on intention to consume halal food among non-Muslims on a national scale has not been examined in previous studies. This research aims to gauge the acceptance of non-Muslims toward halal-certified food in Indonesia by investigating the effect of attitude, subjective norms, perceived behavioral control, and religiosity on the intention of non-Muslims to consume halal food. Data was collected from 250 respondents in each province using convenience sampling and analyzed using PLS-SEM. The results show that attitude, subjective norms, and religiosity significantly affect intention, while perceived behavioral control does not show significance. Theoretical implications of this research lie in its potential contribution to the academic discourse surrounding the acceptance of halal-certified food among non-Muslim people. Additionally, this study is expected to yield practical benefits by informing campaigns aimed at promoting halal-certified food among non-Muslims.
2D materials to nanocomposites with innovative properties: A Critical Review
Authors: Bhatia Tejasvi , Sandhu Anuradha
Published: May 2023

With advancements in polymer sciences, the innovation of two-dimensional
nanomaterial-based polymer nanocomposites has come to light. These are a
blend of nanoscale materials and polymers that give rise to advanced
mechanical, morphological, electrical, and structural properties.
Generally, two-dimensional nanomaterials, such as nanofilms, nanosheets,
nanoribbons, nanofillers, and carbon nanotubes, are fabricated with a
wide range of organic, inorganic, and metal polymers to acquire
desirable properties. The chemistry of these nanomaterial-based
nanocomposites shows that even a small amount of nanomaterial in the
polymer matrix can result in enhanced material properties. The
dielectric, conductive and energy storage properties of these materials
are also of significant importance. These nanomaterial-based polymer
nanocomposites are next-generation materials that will be highly
utilized for different purposes. The blend of existing polymers and
advanced 2d nanocomposites has proven expeditious solutions to many
problems in the world. This review provides details about the
mechanical, morphological, and electric properties of two-dimensional
nanomaterial-based polymer nanocomposites and their respective
characterization techniques.
Impact of Preoperative Anemia on Healthcare Costs: A Multi-Centre Retrospective Review
Authors: Murji Ally , Bakhache Nour , Shirreff Lindsay , Matelski John , Isaranuwatchai Wanrudee
Published: May 2023

Per the BJOG Author Guidelines, a Research Letter should not include an
abstract or subheadings.
The endless fascination of right typical atrial flutter: can we predict its occurrence?
Authors: Tondo Claudio
Published: May 2023

The chance for the development of right AFL is strictly related to
changes in functional conduction properties of the atrial myocardium
which are greatly influenced by fibrotic/scar tissue and increased
atrial volume. If these circumstances take place, reduction in
conduction velocity can favor a macro-reentry circuit with the wavefront
that does not meet its refractory tail and perpetuate the arrhythmia.
Therefore, the time required to traverse the entire circuit is related
to the circuit’s functional properties. With pacing from the coronary
sinus os the right atrial collision time (RACT) of the two wavefronts
traveling the circuit in counterclockwise and clockwise direction is
calculated. in this prospective study, a cut-off of 115.5 ms of RACT
showed a sensitivity and specificity of 92.7% and 93.0% respectively
for diagnosis of AFL and an ROC curve indicated an AUC of 0.96 (95% CI:
0.93-1.0, p<0.01). Based on these premises, RACT could be
utilized as new marker for the propensity of developing typical AFL.
Smart heat tariffs in transition to free market
Authors:   Riga Technical Institution, Pakere Ieva , Blumberga Dagnija ,   Riga Technical Institution
Published: May 2023

Innovative pricing mechanisms should motivate heat suppliers and consumers to move toward more sustainable energy systems and introduce low-temperature district heating systems and sector coupling in smart energy systems. Therefore, district heating regulation regimes should also be changed to stimulate transformations in the energy sector. The district heating tariffs depend on many factors, including fuel prices, operational parameters, taxes, investments, and other criteria. Therefore, an analysis of the DH tariffs has been implemented to find solutions to motivate DH enterprises towards energy efficiency and climate neutrality. The analysis results are based on the decision-making assessment approach by selecting various criteria and evaluating them from five significant aspects: engineering, environmental, climate, economic and socioeconomic. The central elements within the developed fuzzy cognitive mapping model are investment costs, heat production costs, and primary energy consumption. Considering the set boundary conditions, the most beneficial method for smart heat tariff definition could be heat tariff benchmarking with integrated energy efficiency standards for DH operators.
Evaluation of compressibility indicators for housing density
Authors:   Lviv Polytechnic National University, Department of Building Production, Mudryy Ihor
Published: May 2023

Construction in an existing building usually increases the time required to organize and perform process operations. The paper analyzes the existing methods for evaluating compressibility for various regulatory documents and their relationship with the conditions of the construction site and surrounding buildings, shows the need to systematize approaches to compressibility evaluation and develop appropriate design recommendations. Based on theoretical research, the author concludes that there is a need to formulate the terms "compact construction conditions" or "conditions of dense housing"; to compile a list of compressibility conditions and their classification, grouping in order to identify the impact of each group on the cost and duration of construction and installation works; to develop a general procedure for assessing the compressibility of work conditions (indicator) and the necessary measures depending on its quantitative value.
Assessment of the possibility of transferring Ukrainian district heating systems to low-temperature coolants
Authors:   Lviv Polytechnic National University, Department of Heat and Gas Supply and Ventilation, Savchenko Olena , Yurkevych Yuriy ,   Lviv Polytechnic National University, Department of Heat and Gas Supply and Ventilation, Voznyak Orest ,   Lviv Polytechnic National University, Department of Heat and Gas Supply and Ventilation, Savchenko Zenon ,   Lviv Polytechnic National University, Department of Automated Control Systems
Published: May 2023

The analytic research was conducted for a residential building built according to a typical project in Lviv. As the research data showed, the requirements of the existing normative documents of Ukraine do not allow to significantly reduce the heat load on the heat source. Thus, the value of the maximum heat flow to the heating system decreased by 36%, and the maximum heat flow to the hot water supply system - by 7.7%, and the total maximum hourly heat consumption, respectively, decreased by 23%. In addition, studies have established that for such values of the thermal power of the heat source, a decrease in the temperature parameters of the heat carrier can lead to an increase in the consumption of the heat carrier to provide thermal energy to the house by almost 3 times. And this, in turn, for the same diameter of the pipeline, leads to an increase in specific pressure losses by more than 5 times, and, accordingly, to an increase in the power of circulation pumps, the consumption of electrical energy and the cost of these pumps. This means that at present, the transition of large systems of district heating system of Ukraine to low-temperature coolants is possible only during the reconstruction of heat networks.
The effect of thermal insulation from autoclaved aerated concrete on the energy performance of a single-family house
Authors:   Lviv Polytechnic National University, Department of Building Production, Kirakevych Iryna , Sanytsky Myroslav ,   Lviv Polytechnic National University, Department of Building Production, Kotur Danylo ,   Lviv Polytechnic National University, Department of Building Production
Published: May 2023

The article examines the effect of thermal insulation from autoclaved aerated concrete on the energy characteristics of a single-family house. Analysis of mathematical models of energy characteristics of external enclosing structures of buildings depending on the thickness of AEROC autoclaved concrete products according to the criteria of heat loss shows that the thermal resistance value of 7.11 m2K/W and the heat transfer coefficient of 0.141 W/(m2K) are achieved using the wall block AEROC D 300 and AEROC Energy thermal insulation panel with a thickness of 200 mm. These indicators correspond to the passive house standard for thermal resistance (Ro ≥ 6.7 m2K/W) and heat transfer coefficient (Uo ≤ 0.15 W/m2K) of external walls, which confirms the feasibility of using AEROC Energy D 150 thermal insulation panels in combination with wall blocks AEROC D 300 for housing construction according to passive construction standards.
Cationic over-stabilised bitumen emulsion in road construction - review
Authors:   Lviv Polytechnic National University, Department of Highways and Bridges, Sidun Iurii , Sobol Khrystyna ,   Lviv Polytechnic National University, Department of Highways and Bridges, Bidos Volodymyr ,   Lviv Polytechnic National University, Department of Highways and Bridges, Hunyak Oleksii ,   Lviv Polytechnic National University, Department of Highways and Bridges, Protsyk Iryna ,   Separate structured subdivision  «Automobile and Road Vocational College  of Lviv Polytechnic National University
Published: May 2023

This article describes the classification of cationic bitumen emulsions according to "reactivity" and breaking behaviour characteristics. The methods of researching the characteristics of breaking behaviour for bitumen emulsions of different "reactivity" in accordance with European and Ukrainian regulatory documents are presented. Available possible emulsifiers in Ukraine for over-stabilised bitumen emulsions are given with a description of road technology where they can be applied. The experience of using over-stabilised bitumen cationic emulsions in road construction is characterized. Namely, a literature review of the use of over-stabilised bitumen cationic emulsions in soil stabilization technologies, strengthening of base course materials with emulsion, and "cold recycling" technology was carried out. The regularities of the interaction of over-stabilised bitumen emulsion with finely dispersed mineral binders and fillers are reviewed.
Effective wall structures with use of flax straw concretes
Authors:   Lviv Polytechnic National University, Department of Building Production, Novosad Petro , Marushchak Uliana ,   Lviv Polytechnic National University, Department of Building Production, Pozniak Oksana ,   Lviv Polytechnic National University, Department of Building Production
Published: May 2023

The modern building technologies are technologies of green construction, near zero-energy and active buildings with bioclimatic design, optimized energy consumption and CO2 emissions. Prospective enclosing structures of such buildings are structures using available, low cost, and environmentally friendly materials based on plant raw materials. In this paper the evaluation of technical solutions of wall enclosing structures using flax concrete based on lime binder with a density of 300-350 kg/m3 was carried out, taking into account their heating and cooling loads in residential buildings. It is shown that the provision of the necessary indicators of the external walls of energy-efficient buildings is achieved by using multilayer structures with a heat-insulating layer of flax straw concrete or a single-layer structures made from flax straw concrete in frame construction technology.
System of redistribution of non-used resource work in non-rhythmic flow-lines
Authors:   Lviv Polytechnic National University, Department of Building Production, Ivaneiko Igor
Published: May 2023

The article proposes to reduce the duration of non-rhythmic flow lines on technologically identical processes by using the resource of «flow-line non-critical» divisions on interdependent works. In non-rhythmic flow-line construction, there are processes with a reserve of non-used resources with adjacent works («flow-line non-rhythmic» works). As a result of the system study, it is proposed to characterize «flow-line non-critical» works as having an increased period of deployment or convolution of flow lines. The work volume is redistributed on technologically identical processes, for which interdependent divisions are determined. General new working deadlines are limited by the target function. Additional restrictions determine the limits of change in the term of work on intermediate divisions. Optimized works are performed in two variants for three and two shifts. This method is more effective in reducing construction and complements the optimization method by reducing the deployment period.
Analysis of ventilation in the selected lecture room – case study
Authors:   Technical University of Kosice, Kapalo Peter , Bargłowski Leszek ,   Bialystok University of Technology, Adamski Mariusz ,   Bialystok University of Technology
Published: May 2023

The paper documents the determination of the required volumetric air flow of the ventilation unit for the purpose of ventilating the selected lecture room. The contribution briefly characterizes the legislative requirements valid in Slovakia and Poland. Particular attention was paid to the regulations of the Ministry of Health, Ministry of the Environment, Ministry of Transport and Construction of the Slovak Republic and regulations of the Ministry of Education and Sport, Ministry of Infrastructure and European standards. In the paper is documented the experimental measurement performed in the lecture room is also documented. The resulting values of the volumetric air flow required for the ventilation of the lecture room, calculated according to legislative requirements, are compared with the value calculated on the basis of the measured course of the carbon dioxide concentration.
Effect of recycled of recycled glass aggregates on mechanical and physical properties of structural concrete
Authors:   Kingston University, Gengan Gavin , Kew Hsein ,   Kingston University, Konstantinos Poutos ,   Kingston University
Published: May 2023

The exponential expansion in concrete use has put the environment under immense pressure to supply cement, aggregates, and water. Natural resource consumption impacts the environment and undermines the concrete industry. A swift shift towards sustainable concrete is required considering the emergency triggered by human activity on the climate. Glass concrete (GC) has sparked the curiosity of the construction industry owing to its environmentally friendly approach. The study uses recycled glass aggregates (RGA) to partially replace natural aggregates (NA) to produce sustainable structural concrete with superior mechanical properties. 20% glass concrete outperformed all others in fresh and hardened concrete. Only 75% glass blend demonstrated a slight decrease in compressive strength due to drop in density. Glass concrete showed a lower water absorption capacity. However, glass has triggered an alkali-silica (ASR) reaction, reducing the durability of the concrete significantly.
The Influence of damage to reinfrorced concrete beam on strength and Deformability: the review
Authors:   Lviv Polytechnic National University, Department of Building Constructions and Bridges, Mykhalevskyi Nazarii , Vegera Pavlo ,   Lviv Polytechnic National University, Department of Building Constructions and Bridges, Blikharskyi Zinovii ,   Lviv Polytechnic National University, Department of Building Constructions and Bridges
Published: May 2023

In accordance with current conditions, it is necessary to change the aim of buildings and structures in which a large number of reinforced concrete elements that undergo complex stress-deformed states are used. The task for researchers is to determine the residual bearing capacity of the element with uneven damage, making it possible to choose the most optimal calculation option and select materials for optimization, preservation of strength, and durability. Also, a special role is played by the study of the impact of damage and defects, which cause a stressed - deformed state that cannot be predicted by calculation. Methods of determining the residual bearing capacity of reinforced concrete elements with various types of damage are considered. It also provides a detailed analysis of the most common defects and damages in reinforcement concrete structures, different types of corrosion.
Detection of “zero-volume” defects in concrete repair systems using impact-echo method
Authors:   Warsaw University of Technology, Harassek Piotr , Courard Luc ,   University of Liege, Garbacz Andrzej ,   Warsaw University of Technology
Published: May 2023

Adhesion in this system is one of the most important factors that affect the reliability and durability of repair. According to the many standards and guidelines, a pull-off test is recommended for assessment of a bond quality in repair systems. However, a growing interest in development of non-destructive techniques (NDT) for evaluation of concrete structures is recently noted. A majority of NDT methods mentioned in EN 1504-10 for repair efficiency assessment are based on propagation of stress waves. The impact echo method is considered as a one of the promising. The literature data confirmed that the “non-zero volume” defects containing air are relatively easy to detect with impact-echo method if they are large enough. It is more complex to detect “zero-volume” defects, e.g dust or any other antiadhesion material. In this work usability of impact-echo for detection of “zero-volume” defects in repair systems is discussed.
Analysis of Cesarean Section Rates Based on ROBSON Classification System in a Tertiary Care Hospital in West Coast of Gujarat, India
Authors: Punatar Dr. Preeti , Pattani Dr. Bhakti
Published: May 2023

Background with objectives: Because of growing concern over the increasing C-Section worldwide, WHO proposes the ROBSON classification system as a global standard for assessing, monitoring and comparing caesarean section rates. Objective of present study is to investigate CS rates according to ROBSON classification system and to determine area of concern to decrease overall C-section rates. Methods: This study is a retrospective descriptive cohort study done with all caesarean sections delivered in a tertiary teaching hospital in the west coast of Gujarat, India from January 2022 to December 2022. Results: In current study, total CS rate was 28.47%. The major contributor to total CS rate was ROBSON I group (34.09%) followed by ROBSON V (26.34%). Major indications for ROBSON I group include fetal distress due to meconium-stained liquor (25%), Cephalo-pelvic disproportion (CPD) stage1(18%). Major indications for ROBSON group V includes CPD 1(31%), scar tendereness(23%) and previous 2 LSCS(14%). Conclusion: ROBSON I and V being major contributors to total CS suggest to focus on these groups to reduce total CS rate. Art of proper labor monitoring is to be rejuvenated to reduce ROBSON I group, more trial of labor after cesarean should be performed to reduce ROBSON V group.
COVID-19 SÜRECİNDE ANADOLU LİSESİ ÖĞRENCİLERİNİN DENEYİMLERİNİN İNCELENMESİ
Authors: ÖZGE SAĞBAŞ Nuray , TÜRK Fatih , ÖZGE TAŞCI Nesrin
Published: May 2023

Bu çalışma, ortaöğretim kademisindeki öğrencilerin Covid-19 pandemi sürecinde uzaktan öğretim teknolojik araçları kullanma deneyimlerine ilişkin görüşlerinin belirlenmesini amaçlamıştır. Ortaöğretim öğrencilerinin uzaktan öğretim sürecindeki uygulamalar konuusndaki görüşlerini araştıran bu çalışma, nitel araştırma yaklaşımı ve olgu bilim deseni ile yürütülmüştür. Araştırma, Ankara ili Pursaklar ilçesinde Milli Eğitim Bakanlığına bağlı resmî Anadolu Lisesi 12. Sınıfa geçen öğrenciler ile gerçekleştirilmiştir. Çalışma, araştırmacılar tarafından geliştirilen ve alan uzmanlarının da görüşleri alınarak düzenlenen yarı yapılandırılmış görüşme formu kullanılmıştır. Araştırma sonucunda öğrencilerin uzaktan eğitim sürecinde (i) dersleri bilgisayarla takip ettikleri, (ii) ders süresinin ideal olduğu, (iii) odaklanmaya ilişkin bazen sorun yaşadıkları, (iv) öğretmenlerin ders sunum performanslarını beğendikleri, (v) anlaşılmayan konuların telafi edilmesinde konu anlatımlı video izledikleri, (vi) yüz yüze eğitim sürecinde derslerde daha aktif oldukları, (vi) uzaktan eğitimin uzun vadede sürdürülemez olduğu yönünde bulgulara ulaşılmıştır.
Meaningful Work and Counterproductive Work Behaviors: A Serial Mediation
Authors: Sirbu Alexandru-Andrei , Ion Andrei , Dorobanțu Ioana Emilia , Oprea Bogdan
Published: May 2023

Counterproductive work behaviors (CWB) are a set of volitional actions that stem from an intention to harm organizations and their stakeholders (e.g., employees, clients, investors). While, increasingly, more research has been conducted with the aim to explain, predict and prevent CWB from occurring, very little research has investigated the role of motivational constructs such as meaningful work in mitigating the emergence of CWB. The present study draws on The Theory of Purposeful Work Behavior to argue that meaningful work can play a significant role in preventing CWB, and that job satisfaction and organizational commitment serve as mediating factors in the link between meaningful work and CWB. A total of 237 participants participated in a serial mediation, cross-sectional study. The results support the indirect effect of meaningful work on CWB, via job satisfaction and organizational commitment. We conclude that meaningful work is an important factor that is capable of deterring CWB by triggering relevant job attitudes.
Death anxiety and extra-role performance in military and non-military employees: A predictive study
Authors: Telecan Maria I. , Rațiu Lucia C. , Rus Claudia L.
Published: May 2023

Death awareness in the military context has received little research attention despite the high exposure of military employees to death. Drawing on Terror Management Theory (TMT), Meaning Management Theory (MMT), and Conservation of Resources Theory (COR), this study investigated the impact of death anxiety on organizational citizenship behaviors (OCB) and counterproductive work behaviors (CWB) through meaningful work (MW). It also investigated the moderating role of type of profession (military vs. non-military) and death reflection on the relationship between death anxiety, on one hand, and OCB and CWB, on the other hand. Data were collected through self-reports from 177 employees from an Air Force military organization (N = 81) as well as non-military professions (N = 96) using a time-lagged research design. The most obvious finding was the positive relationship between meaningful work and OCB. Our data did not provide empirical support for the other hypotheses developed. The implications of these findings are presented and future research directions are proposed.
Grit as a mediator between core self-evaluations and mental health complaints: The moderating role of workload
Authors: Vîrgă Delia , Balan Geanina , Fodor Oana
Published: May 2023

The present study focuses on the possible mediating effect of the grit concept in the relationship between core self-evaluations and mental health complaints. It also examines the moderating role of workload in the relationship between core self-evaluations and grit. The data was collected online from a convenience sample of 224 employees (55.4% females) and analyzed with PROCESS macro. The results brought support to the moderated mediation model in which grit partially mediates the relationship between core self-evaluation and mental health complaints, and workload moderates the relationship between core self-evaluation and grit. Overall, our results emphasize the positive impact of core self-evaluations and grit on health complaints while highlighting the boost effect of workload.