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Бюллетень науки и практики @bulletennauki
Статьи журнала - Бюллетень науки и практики
Все статьи: 7472
Sustainability of introduced Lonicera L. species to Absheron conditions
Статья научная
The study provides a comprehensive analysis of the results of the introduction of 13 species of the genus Lonicera L. in the conditions of Absheron. Information was obtained on the developmental biology of the introduced species Lonicera L., vegetation features, growth of shoots were studied. The results of many studies of the relationship between winter hardiness and the duration of the growing season are given. It was found that the vegetation can be divided into 6 phenological groups according to the start and end times of the vegetation, and the plants were selected for their sustainability to adverse conditions. The analysis of the collected material shows the distribution of plants by phenogroups and their winter hardiness.
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Sustainable use of agricultural land of Khachmaz district
Статья научная
Land use, like any other natural resource, involves loads on nature and causing harm to it. Therefore, completely harmless production today is considered impossible. Because of this, goals have been identified that establish the rationality of land use. Such goals include, taking into account natural conditions and economic indicators in the corresponding territory, ensuring the interests of society as a whole, the efficiency of the production process, as well as the protection of the quality of land and its reproduction. These goals are always unchanged, and their achievement depends on the technological development of production, the economic level, and the needs of society. In this article, the agricultural suitability level of Khachmaz district land was analyzed based on the cadastral database created on the basis of GIS technologies. It was also noted the need to take a number of measures to reduce the risk of soil erosion.
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Sustainable use of the buffer zone of El Angel ecological reserve, Ecuador
Статья научная
The specifics of management of El Angel Ecological Reserve buffer zone in the Equatorial Andes have been investigated. The main aspects of the environmental impact have been identified. The authors give the recommendations on the sustainable use of the territory to insure employment and lessen the negative impact on the ecosystems such as reducing the use of agricultural chemicals, pasture field planning in accordance with natural environment, firefighting management, control over disboscation and hunting, natural systems monitoring. The creation of a Tourist Center would provide an opportunity to spur economic growth of the region, control and prevent the negative anthropogenic influence.
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Sweeteners in diabetes mellitus diet
Статья научная
According to the statistics submitted by the World Health Organization, sugar consumption has been constantly increasing worldwide. Craving for sugary foods is a fairly common form of addiction. Poor nutrition, caused by external and internal factors, provokes an increase in the incidence of obesity, arterial hypertension, and diabetes mellitus. This deadly triad annually takes hundreds of thousands of lives across the globe, since the pathologies listed above often go hand in hand, being interconnected. The article discusses the problem of using artificial and natural sweeteners in diet therapy for diabetes mellitus. Nutritionists around the world are concerned about how to preserve the usual sweet taste of dishes and drinks for patients with diabetes, on the one hand, yet avoiding additional harm to their health, and possibly improving the quality of diabetic life, on the other. The author summarized the materials on recent clinical studies on the subject discussed. The article analyses the four sweeteners most commonly used by diabetics: fructose, sorbitol, xylitol and honey stevia ( Stevia rebaudiana Bertoni) leaf powder. Considerable attention is paid to the history of the appearance of each of the substances and medicinal raw materials studied. The author indicates their safe properties and possible disadvantages of use, as well as side effects.
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Symbolism of eyes in songs inspired by mountain landscapes and climate
Статья научная
This article explores the symbolism of eyes in songs inspired by mountain landscapes and climate, focusing on how visual imagery and metaphors related to eyes are used to express cultural perceptions and emotional connections with mountainous environments. By analyzing a selection of songs from various cultures, the study examines the role of eyes as a symbol of perception, observation, and insight, reflecting the influence of the harsh and majestic nature of mountains on human experience and creativity. The research highlights the common themes and unique interpretations of eye symbolism in songs that depict the challenges and beauty of life in mountain regions, offering insights into the interplay between nature, culture, and artistic expression.
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Synergetic modeling of the transportation process in the centers
Статья научная
The functioning of the transport system of the logistics center based on synergetic methods is investigating. The main provisions of synergetic useful for organizing the work of logistics centers are outlining. A model has been built to study the transportation process and the control parameter interval has been found to ensure the stable functioning of the transport network of the logistics center.
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Synthesis and acidity study of Na-ZSM-5 zeolite
Статья научная
Zeolites are a special class of structured aluminosilicates with a developed inner surface and a large number of micropores, which allows them to be used as sorbents, membrane materials, and catalysts. Zeolite ZSM-5 is an aluminosilicate formed by parallel channels with a diameter of 5.3-5.6Å interconnected by sinusoidal channels with a diameter of 5.1-5.5Å. At the same time, the presence of aluminum atoms in the zeolite crystal lattice makes it possible to carry out dehydrogenation, esterification, isomerization, and aromatization reactions, and the presence of microchannels significantly increases the number of collisions of reacting compounds, which leads to a significant increase in the rate of chemical transformations in such systems. The synthesis of ZSM-5 zeolite using structure-directing agents has been known since the late 70s of the last centuries, while the high cost of structure-directing agents used and the long duration of hydrothermal synthesis and the need for subsequent post-synthetic procedures lead to a high cost of the resulting zeolite. One of the possible ways to reduce the cost of the synthesis of ZSM-5 zeolite is the direct use of ZSM-5 zeolite as a structure-forming agent, while the synthesis conditions play a decisive role in the structure of the resulting zeolite. The article presents the results of a study of the synthesis of ZSM-5 zeolite and a study of its acidic properties using locally produced reagents. Zeolite was prepared using pre-milled silica gel, sodium hydroxide, and sodium aluminate. The pre-weighed silica gel sample was filled with sodium hydroxide solution and stirred at 70 °C to form a colloidal solution, after which the pre-prepared sodium aluminate solution was added, and hydrothermal synthesis was carried out at 180 °C for 24 hours. During the synthesis, the Si/Al ratio was varied in the range from 7.5 to 2000, while the resulting acidity ranged from 0.002 to 0.265 mmol(NH3)/g(ZSM-5). It was found that the synthesis of ZSM-5 using pre-prepared reagent solutions is superior to the method using direct dissolution of solid reagents in an autoclave. An increase in the Si/Al ratio from 7.5 to 100 leads to a corresponding increase in surface acidity from 0.066 mmol(NH3)/g(ZSM-5) to 0.265 mmol(NH3)/g(ZSM-5). A further increase in the Si/Al ratio to 2000 leads to a decrease in surface acidity to 0.002-0.005 mmol(NH3)/g(ZSM-5). A reliable and simple method for the synthesis of ZSM-5 zeolite has been developed, providing a zeolite yield of up to 97%.
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Synthesis and acidity study of mixed MFI-mord type zeolite
Статья научная
Zeolites of various nature are widely used in the chemical industry, the fuel and energy sector of the economy as sorbents, catalysts and materials for the creation of inorganic membranes for various purposes. At the same time, it is possible to change the acid properties of the surface of zeolites both by varying the ratio of silicon to aluminum or silicon to phosphorus, and by joint synthesis of zeolites of various types with different acidic properties. The presented article provides a method for the sequential production of a zeolite of a mixed structure type MFI and mordenite. Synthesis of the original MFI type zeolite was carried out using seed grains by the hydrothermal method for 72 hours, followed by washing and drying of the zeolite. To obtain a layer of mordenite on the surface of the MFI type zeolite, the initial zeolite was pretreated with alkali and then treated with n-butylamine. In this way, nine samples of zeolite with different acidic surface properties were obtained. Determination of the acidic properties of the surface was carried out by the method of ammonia chemisorption followed by its desorption from the surface of the zeolite. For this purpose, the test sample was loaded into a quartz cuvette, purged with argon at a temperature of 800°С, after which the temperature dropped to 150°С, and the surface of the zeolite was treated with ammonia. Subsequently, the test sample was heated up to 800°С with registration of desorption curves. The amount of adsorbed ammonia was carried out according to previously prepared calibration curves. The synthesized samples of zeolites had different acidity from 0.48 to 0.72 mmol(NH3)/g(sample). In this case, the total acidity of the samples correlated with the ratio of silicon to aluminum in the zeolite samples. Also, depending on the ratio of the MFI and mordenite structures in the zeolite sample, it is possible to vary not only the number, but also the strength of the formed acid sites. So, an increase in the content of mordenite contributes to an increase in the strength of acid centers. The developed method for the synthesis of mixed structure zeolites of the MFI type mordenite made it possible to control the surface acidity of the synthesized samples.
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Synthesis of As2Se3 in organic medium
Статья научная
Arsenic (III) selenide has been synthesized in organic medium by using metaarsenite and amorphous selenium. The synthesis was carried out at the temperature range of 433-443 °K, pH >10, during 2-8 hours. Resulting sediment is filtered, washed at first by 0.1 M of acetate acid solution, then by ethyl alcohol and dried at 353 °K. The chemical analysis of the sediment is made, thermal, X-ray phase analyses are carried out, and electron microscope images of microparticles are taken.
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Synthesis of amides and salts of oxalic acid and their use as plant growth regulators
Статья научная
Oxalic acid plays a very important role in the life of plant organisms. In addition, its salts and amide derivatives also have growth-stimulating properties. In this work, we show the results of research in the field of synthesis of amide derivatives of oxalic acid, and also investigated their growth properties using the example of some agricultural crops. Have found that the mono amide of oxalic acid has a stronger effect on the growth of pea seeds compared to the disubstituted amide of this acid. Thus, we can conclude that salts and amide derivatives of oxalic acid have a pronounced regulatory property during the ripening of pea and corn seeds. In this regard, they have been recommended as growth stimulants for these plants in agricultural practice.
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System of ensuring social and economic security of the industrial sector
Статья научная
The methodological basis for the formation of the system of ensuring socio-economic security includes features of the industrial sector. The specifics of his defense was designed to show with the help of the methodological and operational foundations. Methodological framework is formulated based on the research process the functional specificity provide socio-economic security of the industrial sector. They form the perimeter of ensuring social and economic security, which is formed by the expectations of society from the defense system of the industrial sector of the country. Operating bases are complementary to the functional specificity of the system provide socio-economic security by means of the formation of a specific institutional framework. Among them, the following are noted: modeling, allowing multivariate escalation of adverse events in the industrial sector and methods of its evaluation; instrumental assistance, taking into account the need for instrumental diversity for the implementation of defense functions in changing criteria (the environment of the industrial sector, its structure and the state of inter-element connections); functional coherence as the need to balance the goals of ensuring the socio-economic security of the industrial sector with the objectives and values of the formation of the industrial sector of the country, which are fixed in the policy documents of the state.
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Systematic Analysis and Ecology of Herbaceous Species of the Family Rosaceae Juss
Статья научная
The present article investigates the herbaceous species of the family Rosaceae Juss. distributed in the flora of the Nakhchivan Autonomous Republic and provides an ecological assessment of these species. Based on the analysis of available literature sources and the results of original field studies, a total of 40 herbaceous species belonging to 9 genera of the family Rosaceae were identified and studied within the regional flora. Among them, 17 species belong to the genus Potentilla L., 13 species to Alchemilla L., 2 species each to Sibbaldia L., Geum L., and Filipendula Mill. The remaining genera are represented by monotypic taxa, each comprising a single species. The family Rosaceae is of considerable interest due to its high level of biodiversity and significant ecological importance. The results of extensive field investigations indicate that the greatest species diversity of herbaceous Rosaceae taxa is observed up to the middle mountain belt, within the middle mountain belt, and in the subalpine and alpine zones, while the lowest diversity occurs in the lower mountain belt. In modern botanical research, issues related to the reconstruction of botanical-geographical and historical systems, the analysis of species distribution and genesis, and the clarification of distribution (areal) types are of particular importance. The herbaceous species of the family Rosaceae were classified according to their areal types as follows: Holarctic and Asia Minor (7 species each), Western Palaearctic and Northern Atropatene (6 species each), Caucasian areal class (5 species), Near Eastern and Northern Iranian areal classes (3 species each), Palaearctic (1 species), and Central Asian areal class (1 species). For one species, the areal type could not be determined. According to ecological group classification, it was determined that 55% of the herbaceous Rosaceae species are mesophytes, 35% mesoxerophytes, 5% xeromesophytes, 3% hydrophytes, and 2% xerophytes.
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Статья научная
The article presents an analysis of the systematic composition, ecological characteristics, and utilization directions of species belonging to the genus Artemisia L. distributed in the flora of the Nakhchivan Autonomous Republic, based on regional floristic studies. As a result of literature review and field investigations, it was determined that the genus Artemisia L., belonging to the family Asteraceae, is represented by 15 species in the territory of the Nakhchivan Autonomous Republic, and their systematic classification has been clarified. During the study, the use of wormwood species as medicinal, essential oil-bearing, forage, food, spice, dye, and resin-producing plants was evaluated, and their multifunctional and promising nature was demonstrated. The results confirm that species of the genus Artemisia have significant scientific, research, and practical-economic importance in the Nakhchivan Autonomous Republic.
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Статья научная
The systematic composition of the genus Nepeta L. of the flora of the Nakhchivan Autonomous Republic is presented. This is one of the most widespread genera of the flora of the Nakhchivan Autonomous Republic. The genus Nepeta is a perennial herbaceous plant cultivated in many regions of the world, especially in mountainous and semi-desert zones. The section is represented by 31 genera and 135 species. In Azerbaijan, 26 species of this genus are found. Nepeta L. is common on rocky-stony and roadside roadsides of the region. The species included in the genus are used in medical, ecological, decorative and cosmetic practice. As a result of the studies, it was established that 15 species of this genus were found in the flora of the Nakhchivan Republic. The species belonging to the genus are used in medical, ecological, decorative and cosmetic fields.
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Systematic review of the genus Hypericum L. in flora of Azerbaijan
Статья обзорная
Among the widespread plant species in Azerbaijan, the genus Hypericum L. which dates back to the Cenozoic era and belongs to the family Hypericaceae takes special place. 80% of the total number of species belonging to the Hypericaceae family are concentrated in the genus Hypericum , which is distinguished by its many-sided areas of application, especially in the pharmaceutical, decorative and dye industries. This genus is considered one of the largest genera of flowering plants in terms of species diversity (22%). Although research on the systematics of the genus Hypericum has been conducted by many scientists around the world, the general characteristics and taxonomic composition of the species distributed in the flora of Azerbaijan have not been studied for the last 50 years. As a result of our research, it was determined that there are not 15 species, but 19 species, 1 subspecies and 1 variety belonging to the genus in the flora. The characteristics, descriptions and synonyms of sections, species, subspecies were given.
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Статья научная
In the given article, the flora of Ganja city and its surrounding areas was studied, the plants were systematically, biomorphologically, geographically, ecologically, and endemically analyzed. The article also analyzed rare and endangered plants on scientific basis. In the researched region, 68 families, 244 genera, and 441 species of plants were identified. It is reported that the basis of the flora composition of the territories is angiosperms, the leading families of which are Poaceae with 38 genera (15.6%), 63 species (14.3%), Fabaceae 23 genera (9.4%), 48 species (10.9%); Asteraceae is represented by 15 genera (6.6%), 35 species (7.9%). It was determined that the composition of the flora of the study area is dominated by perennial grasses with 194 species (44%).
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Статья научная
The article presents data on the systematical structure, ecological groups, and areal classes of Rosa L. genus spread in the flora of the Nakhchivan Autonomous Republic. As a result of researches in the Nakhchivan Autonomous Republic, the concept of 30 species of Rosa L genus was developed and spreading of these species by vertical heights, as well as geographic range classes based on regional and zonal principles, were determined.
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Taboos in Kyrgyz, Russian and English
Статья научная
This work explores the concept of taboos, their role in society, and their variations across different cultures. Taboos are social, cultural, and religious prohibitions that regulate behavior and communication. While some taboos maintain order and preserve traditions, others may seem outdated or restrictive. The study focuses on taboos in Kyrgyz, Russian, and English, analyzing their differences and significance. In Kyrgyzstan, taboos emphasize respect for elders, family honor, and religious beliefs. In Russia, many taboos are linked to superstition and politics, while in Great Britain, they are mostly related to politeness and personal boundaries. The paper also discusses the evolution of taboos, highlighting how societal changes influence their relevance. The analysis concludes that while taboos play an important role in shaping cultural identity, they should be reconsidered when they limit personal freedom or hinder progress. Understanding taboos helps improve cross-cultural communication and promotes tolerance.
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Статья научная
The presented report provides information on the systematic composition of species of the genus Lathyrus L. of the legume family, common in the flora of the Nakhchivan Autonomous Republic. During the comparative analysis of the collected herbarium materials and literary sources, it was found that the genus Gulyulja of the legume family on the territory of the Nakhchivan Autonomous Republic is represented by 24 species, information on the current state of these species is reflected in the article. The prepared report also studies and shows ecological groups, geographical elements and altitudinal belts of species belonging to the genus Lathyrus L. of the legume family.
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Taxonomic analysis of the Cirsium mill. genus in flora of Azerbaijan
Статья научная
The main goal was a systematic analysis of the Cirsium Mill. genus (Asteraceae) in flora of Azerbaijan. Floristic-systematic, comparatively morphological, ecological and other methods were used. In addition, materials stored in the Herbarium Fund of the Botanical Institute of Ministry of Science and Education, Republic of Azerbaijan were studied related to this genus. As a result of the research, it was established that 31 species of the genus Cirsium Mill. are widespread in the flora of Azerbaijan.
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