AGRIS - 

Data provenance by Country

2024

Mammadova, Sh.

Electrophoretic analysis of globulin storage proteins in the seeds of 46 lentil accessions introduced from ICARDA was carried out. The aim of the work was to identify, certification and study the genetic diversity of lentil genotypes. In addition, a genetic diversity index (H) was calculated for the zones (ω-, γ-, β- and α-) based on the frequency of patterns on electropherograms of spare globulin proteins in seeds of lentil accessions. Twenty-two spectra and 55 patterns were identified in lentil accessions, most of which polymorphism was observed. 7 spectra and 22 patterns were observed in the ω-zone, 7 spectra and 9 patterns in the γ-zone, 5 spectra and 11 patterns in the β-zone, and 5 spectra and 13 patterns in the α-zone. The genetic diversity index was calculated for each of the 4 zones (ω, γ, β and α) based on Nei formula. According to the calculations, more genetic diversity was observed in ω-zone (H=0.930), slightly less in β-zone (H=0.872), α (H=0.827) and the least in γ-zone (H=0.743). Based on cluster analysis, the genotypes were divided into 5 groups and subgroups. Based on these results, an electrophoretic analysis of globulin storage proteins in polyacrylamide gel (A-PAAG) was performed for the first time and polymorphism between lentil genotypes was identified.

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Publishing center Science and Practice - Russian Federation

2024

Cavadova, E.

The article provides an analysis of the Ganja River basin according to geographical elements. 8 geographical elements Caucasian, Holarctic, Arid or xerocontinental, Pluregional Boreal, Mediterranean, Palearctic and Iran-Turanian geographical elements were defined for the research area. Each geographical element was made on the basis of botanical geographical (floristic) regionalization.

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Publishing center Science and Practice - Russian Federation

2024

Mammadova, A.

In the development of poultry farming in Azerbaijan, there are big changes in the microclimate indicators in the building due to the rise in temperature in the summer months. The variability in the microclimate, in turn, affects the productivity of the birds and the blood-biochemical indicators. The research work was carried out on White Texas, Pharaoh meat-oriented quails in laboratory no. 23 of the Anatomy, Pathoanatomy and Pathophysiology department of the Azerbaijan State Agrarian University’s training and practice center for quail breeding. The experiment was carried out mainly in hot summer days depending on the air temperature, and during the experiment, the indicators formed in the homeostasis of the quails along with their productivity were clarified. In order to investigate the reasons preventing high yield from White Texas, Pharaoh quails during temperature stress, we aimed to study the factors affecting their homeostasis along with studying other factors. In the article, a change in the feed ration of quails was made in order to avoid the negative factors created in homeostasis caused by temperature stress which occurs frequently among quails in the summer months. It is better to keep full-grown quails in cages under the shed during the warm months. We reduced the amount of corn, wheat and barley used in the ration and replaced it with other non-traditional feeds determining the period in advance when temperature stress will increase. To prevent changes in homeostasis, acorn flour from non-traditional forages was used in the feed ration. This feed supplement-acorn flour was applied to each quail per a day in order to increase temperature tolerance during temperature stress.

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Publishing center Science and Practice - Russian Federation

2024

Pashayeva, F.

For the first time, ontogenetic characteristics and coenopopulation status of a rare and endangered species of early spring flora Listera ovata (L.) R. Br. are presented. The growing area of this species in the northeastern part of the Lesser Caucasus near the village of Ashagi Dashkesan, Dashkesan district and Tovuz district, Esrik Jirdakhan, has been studied. Information about two populations of the species is provided and a comparative analysis is carried out. The largest number of individuals and average density were noted in CP 1, the smallest in CP 2. The restoration index and replacement index have the highest values in CP 2. According to the Δ and ω indicators, both coenopopulations belong to the adult type.

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Publishing center Science and Practice - Russian Federation

2024

Temreshev, Izbasar I.

False skin beetle Biphyllus lunatus (Fabricius, 1787) is firstly recorded from Kazakhstan. The finds of B. lunatus from Ulytau Oblast of Central Kazakhstan are currently the easthmost localities for this species and first record for Central Asia. The records of the beetles from family Biphyllidae were absent for Kazakhstan.

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Altai State University - Russian Federation

2024

Abbasova, A.

The results of studies conducted in 2022-2023 are reflected. Periods of activity of Eurygaster integriceps, a serious pest of grain farming in the Shamkir district, have been identified. This is one of the main grain regions of Azerbaijan. The studied species, when present in high numbers, causes serious damage to grain farms. It has been established that the pest under these conditions produces one full generation and is more active in the agrocenosis from May to June. A phenological calendar is presented, which can be used in the development of planned measures for protection against this pest.

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Publishing center Science and Practice - Russian Federation

2024

Alieva, I.

This article has been investigated and evaluated by studying the specification of anatomical structure of the sort samples of tomatoes. Studies have shown that anatomical indicators mainly have a great importance in learning of drought resistance, determining the origins of the different varieties, choosing of hybrid plants in selection work of the size and number of stomata, and total thickness of the leaves. Studying of anatomical characters of tomato sort samples and hybrids plants has shown that learning of the total thickness of the leaf and the size of number of stomata has a certain importance in selection of hybrid plants. It is defined that in sort samples which their cuticle layer is thick, water evaporation decreases, and they become resistible to illness. So, the sample of Volgograd 5/95, 82 and 90 in upper epidermis and the sample of 93 in lower epidermis were differed for the thickness of cuticle layer. As results of studies, it has been identified that chlorenchyma present in the sort samples predominant for differing according to the total thickness of the leaf. Moreover, studying of the leaf cells has shown that the evaporation of water is higher in the leaves which the number of stomatas is more, and the epidermis cells are few, for that reason, the leaves of Solanum pimpinellifolium L. (wild form) are in thin needle shaped in order to reduce the transpiration. Exactly for this reason, it’s recommended to use the wild form as a donor in conducting the future selection work.

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Publishing center Science and Practice - Russian Federation

2024

Vasiliy Yu. Chernov | Il’shat G. Gaisin | Anzhelika N. Nosova | Elena M. Maltseva

Рассматриваются технологические аспекты получения нового эффективного композиционного материала на основе термически модифицированного древесного заполнителя и цементных вяжущих веществ – термодревбетона. Исследовано влияние содержания воды в заполнителе из термически модифицированной древесины на качественные показатели древесно-цементной композиции. Для решения теоретических задач и прикладных вопросов прогнозирования технологических параметров производства термодревесно-цементной композиции разработаны математические модели влияния продолжительности вымачивания и температуры воды на относительное изменение массы (увлажнение) заполнителя. На начальном этапе были выполнены экспериментальные исследования по определению воздействия предварительного вымачивания заполнителя на процесс созревания термодревбетона и качество получаемого материала. Образцы изготавливались способом вибропрессования полусухой смеси с использованием сухого и предварительно вымоченного заполнителя из термически модифицированной древесины, а также способом вибролитья. Определены закономерности влагопереноса между заполнителем и цементно-песчаным раствором, а также установлено, что предварительное вымачивание заполнителя из термически модифицированной древесины оказывает положительное влияние на прочностные и качественные показатели термодревбетона. Наоборот, использование сухого заполнителя из термически модифицированной древесины при данном способе формования оказывает существенное отрицательное влияние на качество готового материала. Отдельно был исследован процесс влагопоглощения заполнителем из термически модифицированной древесины путем вымачивания, установлены основные закономерности и особенности сорбции воды заполнителем с интервалами времени 30, 60, 120, 180 и 300 мин и при температуре воды 3–4, 16–18 и 75–85 ℃. Также определено, что дополнительный прогрев воды значительно ускоряет интенсивность сорбции воды и степень увлажне ния заполнителей из термически модифицированной древесины, а размер их частиц не играет существенной роли в процессе. При этом рекомендуемая продолжительность вымачивания заполнителя из термически модифицированной древесины перед подготовкой смеси и формованием изделий из термодревбетона методом полусухого вибропрессования составляет 30 мин. | In this article, the technological aspects of obtaining a new effective composite material based on thermally modified wood filler and cement binders – thermal wood concrete – are considered. The influence of water content in thermally modified wood filler on the qualitative characteristics of a wood-cement composition has been studied. To solve the theoretical problems and applied issues of forecasting the technological parameters for the production of thermal wood-cement composition, the mathematical models of the effect of soaking duration and water temperature on the relative change in the mass (dampening) of the filler have been developed. At the initial stage, experimental studies have been carried out to determine the effect of pre-soaking the filler on the curing of thermal wood concrete and the quality of the resulting material. The samples have been produced via vibrocompression of a semi-dry mixture using dry and pre-soaked filler made of thermally modified wood, as well as via vibratory casting. The regularities of moisture transfer between the filler and the cement-sand mortar have been determined, and it has also been established that pre-soaking the thermally modified filler has a positive effect on the strength and quality characteristics of thermal wood concrete. On the contrary, the use of the dry filler made of thermally modified wood in this molding method has a significant negative impact on the quality of the finished material. The process of moisture absorption by the thermally modified wood filler by soaking has been studied separately. The main regularities and features of water sorption by the filler have been established at the time intervals of 30, 60, 120, 180 and 300 minutes and at the water temperatures of 3–4, 16–18 and 75–85 ℃. It has also been determined that additional water heating significantly accelerates the intensity of water sorption and the degree of dampening of thermally modified wood fillers, and the size of their particles does not play a significant role in the process. In this case, the recommended duration of soaking the thermally modified wood filler before preparing the mixture and molding the products made of thermal wood concrete via semi-dry vibrocompression is 30 minutes.

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Northern (Arctic) Federal University - Russian Federation

2024

Dmitriy V. Belyakov | Oleg A. Konyushatov | Sergey A. Korchagov | Sergey E. Gribov

Сокращение количества биологических видов может вызвать утрату целостности биосферы и ее способности поддерживать важнейшие характеристики природной среды. Поэтому научные исследования и разработка практических рекомендаций в области сохранения биологического разнообразия при лесопользовании в настоящее время имеют особую актуальность. Меры по сохранению биоразнообразия при лесопользовании отражены в правилах заготовки древесины, лесохозяйственных регламентах лесничеств и проектах освоения лесов. Cохранение биологического разнообразия в ходе лесозаготовительных работ предусматривается путем выделения ключевых биотопов – лесных участков определенной площади, особо значимых как места обитания редких видов животных и растений. Анализ Красной книги Вологодской области показал, что 29 % редких видов приурочено к участкам леса вдоль водотоков. Исследование проведено на стационарных объектах в границах Вологодского лесничества Вологодской области (южно-таежный район европейской части Российской Федерации), представленных сплошными вырубками 2018–2019 гг. с сохраненными ключевыми биотопами – участками леса вдоль временных водных объектов. Средние показатели насаждений получены на основании материалов отвода и таксации лесосек до рубок. Проведение работ базировалось на лесоводственнотаксационных и эколого-биологических методах полевой и камеральной оценки. При полевых исследованиях (2023 г.) в ключевых биотопах выполнен перечет деревьев по породам, диаметрам на высоте груди и категориям санитарного состояния с определением средних таксационных показателей древостоев. Описаны почвы и ботанический состав живого напочвенного покрова. Определены видовое разнообразие и численность видов растений в ключевых биотопах, а также на прилегающих участках – на вырубке и в древостое. Установлены более высокая численность видов таежной флоры и наличие редких видов растений в ключевых биотопах в отличие от вырубок, что свидетельствует о необходимости сохранения ключевых биотопов при проведении лесозаготовительных работ. В границах исследованных ключевых биотопов средняя численность видов растений в буферной зоне превышает число видов в ядре биотопа, различия являются статистически достоверными. Поэтому в процессе отвода лесосек, кроме выделения центральной части – ядра биотопа, требуется оставлять буферную зону как территорию с наибольшей численностью видов. | A reduction in the number of biological species can cause a loss of the integrity of the biosphere and its ability to maintain the most important characteristics of the natural environment. Therefore, scientific research and the development of practical recommendations in the field of conservation of biological diversity in forest management are currently of particular relevance. Measures to preserve biodiversity in forest management are reflected in the rules of timber harvesting, forestry regulations of forestries and forest development projects. The conservation of biological diversity in the course of logging operations is provided by allocating key biotopes – forest plots of a certain area, especially significant as habitats for rare species of animals and plants. The analysis of the Red Book of the Vologda Region showed that 29 % of rare species are confined to forest areas along watercourses. The study has been conducted at stationary sites within the boundaries of the Vologda Forestry of the Vologda Region (the Southern taiga area of the European part of the Russian Federation), represented by clear cuttings of 2018–2019 with the preserved key biotopes – forest areas along temporary water bodies. The average values for the plantations have been obtained on the basis of the materials from allotment and taxation of the cutting areas before felling. The work has been based on silvicultural and taxation, as well as ecological and biological methods of field evaluation and desk assessment. During the field studies (2023) in the key biotopes, a tally has been carried out by tree species, their diameters at chest height and categories of sanitary condition, with the determination of the average taxation indicators of the stands. The soils and the botanical composition of the live ground cover have been described. The species diversity and abundance of plant species in the key biotopes, as well as in the adjacent areas – in the cuttings and in the stands – have been determined. A higher number of species of taiga flora and the presence of rare plant species in the key biotopes, in contrast to the cuttings, have been established, which indicates the need to preserve the key biotopes during logging operations. Within the boundaries of the key biotopes studied, the average number of plant species in the buffer zone exceeds the number of species in the core of the biotope, the differences are statistically significant. Therefore, in the process of allotment of cutting areas, in addition to the allocation of the central part, or the core of the biotope, it is necessary to preserve a buffer zone as the area with the largest number of species.

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Northern (Arctic) Federal University - Russian Federation

2024

Dmytriy V. Tarabukin | Elena N. Patova | Irina V. Novakovskaya

Представлены сведения о валоризации отходов, которые образуются в процессе производства санитарно-гигиенической бумаги. Оценена возможность биоконверсии полисахаридной части бумажного шлама в простые сахара. Рассмотрены варианты обработки бумажного шлама перед ферментативным гидролизом для достижения максимального выхода моносахаридов. Выявлено, что предобработка кислотами является ключевой стадией перед биокаталитическим расщеплением полисахаридов отхода. Дополнительный выход продуктов ферментативного гидролиза после предобработки кислотами был получен за счет предварительной экстракции бумажного шлама спиртом или ацетоном. Установлено, что наиболее интенсивно ферментативный гидролиз легкодоступных фракций бумажного шлама проходит за первые 10–12 ч. Далее процесс замедляется, вероятно, ввиду действия оставшихся компонентов наполнителей, а также увеличения доли трудногидролизуемой полисахаридной части. Во всех вариантах доля абсолютно сухого непрогидролизованного остатка составила около 43±2 % от сухого вещества бумажного шлама. Основными продуктами ферментативного гидролиза были глюкоза и ксилоза. Полученные сахара использованы для миксотрофного культивирования водорослей Tetradesmus obliquus и Chlorella vulgaris. Среда, приготовленная на гидролизате бумажного шлама, обеспечивала максимальный выход биомассы микроводорослей. Подобраны штаммы дрожжей для конверсии моносахаридов из бумажного шлама. В серии экспериментов по нестерильному выращиванию дрожжей наиболее продуктивными (в пределах 2,10±0,14 г воздушно-сухой массы дрожжей/дм3 за 24 ч) оказались культуры Candida utilis PAL D и Debaryomyces hansenii SWING R. Степень конверсии сахаров гидролизата составила 70±2 %. Бо́льшая часть из оставшихся (около 80 %) сахаров представлена ксилозой. Полная утилизация сахаров происходила на 2-е сутки при добавлении в среду дополнительного источника азота. С другой стороны, отработанная питательная среда после отделения дрожжей была пригодна для миксотрофного культивирования микроводорослей. Выявлено, что экономические затраты на предварительную обработку бумажного шлама азотной кислотой можно нивелировать, применив полученные соли в качестве источника азота для культивирования дрожжей. При этом выход биомассы дрожжей увеличивается почти в 2 раза. | This article presents the information on the valorization of waste generated during the production of tissue paper. The possibility of bioconversion of the polysaccharide part of paper sludge into simple sugars has been evaluated. The options for processing the paper sludge before enzymic hydrolysis to achieve the maximum yield of monosaccharides have been considered. Pretreatment with acids has been found to be a key step before the biocatalytic cleavage of waste polysaccharides. An additional yield of enzymic hydrolysis products after pretreatment with acids has been obtained by pre-extraction of the paper sludge with spirit or acetone. It has been established that the most intense enzymic hydrolysis of readily available fractions of the paper sludge takes place in the first 10–12 hours. Further, the process slows down, probably due to the action of the remaining components of the fillers, as well as an increase in the proportion of the difficult-to-hydrolyze polysaccharide part. In all cases, the proportion of absolutely dry non-hydrolyzed residue has been about 43±2 % of the dry matter of the paper sludge. The main products of enzymic hydrolysis have been glucose and xylose. The resulting sugars have been used for mixotrophic cultivation of the Tetradesmus obliquus and Chlorella vulgaris algae. Yeast strains have been selected for the conversion of monosaccharides from the paper sludge. In a series of experiments on non-sterile yeast cultivation, the Candida utilis PAL D and Debaryomyces hansenii SWING R cultures have turned out to be the most productive (within 2.10±0.14 g of air-dry yeast weight/dm3 per 24 hours). The degree of conversion of hydrolysate sugars has been 70±2 %. Most of the remaining sugars (about 80 %) have been represented by xylose. Complete utilization of the sugars has taken place on the 2nd day when having added an extra nitrogen source to the medium. On the other hand, the spent nutrient medium after yeast separation has been suitable for mixotrophic cultivation of microalgae. It has been revealed that the economic costs of pre-treatment of the paper sludge with nitric acid can be leveled by using the resulting salts as a nitrogen source for cultivating yeast. In doing so, the yield of yeast biomass increases by almost 2 times.

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Northern (Arctic) Federal University - Russian Federation