bluuebunny/crossref_metadata_2025 huggingface dataset:
The large-scale magnetic field of the M dwarf double-line spectroscopic binary FK Aqr
Authors: Tsvetkova S. , Morin J. , Folsom C. P. , Le Bouquin J.-B. , Alecian E. , Bellotti S. , Hussain G. , Kochukhov O. , Marsden S. C. , Neiner C. , Petit P. , Wade G. A. ,   The BinaMIcS Collaboration
Published: December 2023

Context. This work is part of the BinaMIcS project, the aim of which is to understand the interaction between binarity and magnetism in close binary systems. All the studied spectroscopic binaries targeted by the BinaMIcS project encompass hot massive and intermediate-mass stars on the main sequence, as well as cool stars over a wide range of evolutionary stages.

Aims. The present paper focuses on the binary system FK Aqr, which is composed of two early M dwarfs. Both stars are already known to be magnetically active based on their light curves and detected flare activity. In addition, the two components have large convective envelopes with masses just above the fully convective limit, making the system an ideal target for studying effect of binarity on stellar dynamos.

Methods. We use spectropolarimetric observations obtained with ESPaDOnS at CFHT in September 2014. Mean Stokes I and V line profiles are extracted using the least-squares deconvolution (LSD) method. The radial velocities of the two components are measured from the LSD Stokes I profiles and are combined with interferometric measurements in order to constrain the orbital parameters of the system. The longitudinal magnetic fields Bl and chromospheric activity indicators are measured from the LSD mean line profiles. The rotational modulation of the Stokes V profiles is used to reconstruct the surface magnetic field structures of both stars via the Zeeman Doppler imaging (ZDI) inversion technique.

Results. Maps of the surface magnetic field structures of both components of FK Aqr are presented for the first time. Our study shows that both components host similar large-scale magnetic fields of moderate intensity (Bmean ≃ 0.25 kG); both are predominantly poloidal and feature a strong axisymmetric dipolar component.

Conclusions. Both components of FK Aqr feature a rather strong large-scale magnetic field (compared to single early M dwarfs with similar masses) with a mainly dipolar axisymmetric structure. This type of magnetic field is not typical for single early M dwarfs, and is rather reminiscent of fully convective dwarfs with later spectral types. The primary FK Aqr A is currently the most massive recognised main sequence M dwarf known to host this type of strong dipolar field.
A companion in V1247 Ori supported by motion in the pattern of the spiral arm
Authors: Ren Bin B. , Xie Chen , Benisty Myriam , Dong Ruobing , Bae Jaehan , Stolker Tomas , van Holstein Rob G. , Debes John H. , Garufi Antonio , Ginski Christian , Kraus Stefan
Published: December 2023

While nearly two dozen spiral arms have been detected from planet-forming disks in near-infrared scattered light, none of their substellar drivers has been confirmed. By observing spiral systems in at least two epochs spanning multiple years and measuring the motion of the spirals, we can distinguish what causes the spirals and locate the orbits of the driving planets if the spirals are triggered by them. Upon a recent validation of this approach using the comotion between a stellar companion and a spiral, we obtained a second-epoch observation for the spiral system in the disk of V1247 Ori in the H-band polarized scattered light using Very Large Telescope (VLT), SPHERE, and IRDIS. By combining our observations with archival IRDIS data, we established a 4.8 yr timeline to constrain the spiral motion of V1247 Ori. We obtained a pattern speed of 0°.40 ± 0°.10 yr−1 for the northeast spiral. This corresponds to an orbital period of 900 ± 220 yr, and the semimajor axis of the hidden planetary driver therefore is 118 ± 20 au for a 2.0 ± 0.1 M⊙ central star. The location agrees with the gap in ALMA dust-continuum observations, which provides joint support for the hypothesis that a companion drives the scattered-light spirals while carving a millimeter gap. With an angular separation of 0″​​.29 ± 0″​​.05, this hidden companion is an ideal target for JWST imaging.
Secular change in the spin states of asteroids due to radiation and gravitation torques
Authors: Ďurech J. , Vokrouhlický D. , Pravec P. , Krugly Yu. , Polishook D. , Hanuš J. , Marchis F. , Rożek A. , Snodgrass C. , Alegre L. , Donchev Z. , Ehgamberdiev Sh. A. , Fatka P. , Gaftonyuk N. M. , Galád A. , Hornoch K. , Inasaridze R. Ya. , Khalouei E. , Kučáková H. , Kušnirák P. , Oey J. , Pray D. P. , Sergeev A. , Slyusarev I.
Published: December 2023

Context. The rotation state of small asteroids is affected in the long term by perturbing torques of gravitational and radiative origin (the YORP effect). The former can be detected by a change in the spin-axis orientation in the inertial space; the latter manifests itself by a quadratic increase in the rotation phase.

Aims. Direct observational evidence of the YORP effect is the primary goal of our work. This includes both the YORP detection for new objects and an improvement in the accuracy of previously known detections.

Methods. We carried out photometric observations of five near-Earth asteroids: (1862) Apollo, (2100) Ra-Shalom, (85989) 1999 JD6, (138852) 2000 WN10, and (161989) Cacus. Then we applied the light-curve inversion method to all available data to determine the spin state and a convex shape model for each of the five studied asteroids. The YORP effect was modeled as a linear change of the rotation frequency υ ≡ dω/dt. In the case of (2100) Ra-Shalom, the analysis required that the spin-axis precession due to the solar gravitational torque also be included.

Results. We obtained two new detections of the YORP effect: (i) υ = (2.9 ± 2.0) × 10−9 rad d−2 for (2100) Ra-Shalom, and (ii) υ = (5.5 ± 0.7) × 10−8 rad d−2 for (138852) 2000 WN10. The analysis of Ra-Shalom also reveals a precession of the spin axis with a precession constant α ~ 3000″ yr−1. This is the first such detection from Earth-bound photometric data. For the other two asteroids, we improved the accuracy of the previously reported YORP detection: (i) υ = (4.94 ± 0.09) × 10−8 rad d−2 for (1862) Apollo, and (ii) υ = (1.86 ± 0.09) × 10−8 rad d−2 for (161989) Cacus. With this value, Apollo has the most precisely determined YORP effect so far. Despite the recent report of a detected YORP effect for (85989) 1999 JD6, we show that the model without YORP cannot be rejected statistically. Therefore, the detection of the YORP effect for this asteroid requires future observations. In several of our targets, the currently available observations do not provide enough constraints on the shape model (even at large scales) to compute the theoretical YORP effect with sufficient precision. Nevertheless, the interpretation of the detected signal as the YORP effect is fairly plausible. The spin-axis precession constant of Ra-Shalom determined from observations matches the theoretically expected value.

Conclusions. The total number of asteroids with a YORP detection has increased to 12. In all cases, the rotation frequency increases in time. The analysis of a rich photometric data set of irregularly shaped asteroids may require inclusion of spin-axis precession in future studies.
The Effect of the Application of Biodux Stimulator in Growing High and Quality Cotton From Cotton
Authors: Karimov Sharofiddin , Abdualimov Shukhrat , Karabaev Ikramjan
Published: December 2023

In the article, the scientific basis of the new stimulators on enzyme activity, biosynthesis of amino acids and proteins, and the physiological processes that occur during cotton development, the effect of new stimulators on seed and cotton during its growth period, on seed germination, cotton growth and development, and resistance to gommosis and wilt diseases, were determined. . Biodux stimulator provides 8.512.1% higher field fertility of seed, and the highest result was achieved at the rate of 3.0 ml/t. Also, when cotton was treated with Biodux at the rate of 2.0 ml/ha during the flowering period, the plant height was 7.7 cm higher, the yield branches were 1.3 pieces and the number of bolls was 1.8 more, and the degree of opening of bolls was 7.7-13.7 % has been found to be accelerated.
Influence of Winter Wheat, Intermediate and Green Crops on the Growth, Development and Yield of Cotton
Authors: Tajiev Mardankul , Tajiev Karim
Published: December 2023

This article presents data from a field experiment conducted in the south of Uzbekistan, growth, development and fruiting, the cotton yield in one box is much better compared to the control. In this article, the tables give materials for August 1 and September 1, which can be considered more final materials. The yield of raw cotton in the control variant was 31.3 centners/ha, and the yield of cotton after harvesting winter wheat with soybeans for green manure was 35.1 centners/ha, while the maximum yield was 36.8 centners/ha. The yield of cotton after harvesting winter wheat with sowing oats on green manure is 35.3 c/ha. The data obtained indicate that the cotton harvest on the studied variants of short-rotation crop rotation, the formation of bolls of the Bukhara 102 variety occurred more intensively than on the plants of the control variant. The weight of one box in the control was 4.7-5.0 grams, and in the variants where intermediate and green manure crops were the predecessors of cotton, the weight of one box was 5.2-5.5 grams. Regarding the control, in the crop rotation variant, more income was received from the sale of raw cotton and, 600 thousand sums, where it was, formed the maximum yield and the best quality of cotton fiber.
Effect of Irrigation Regime on Biometric Indicators of Spring Wheat Varieties
Authors: Bekbanov Bisenbay , Nagimetov Orakbay , Kosbergenova Bibinaz
Published: December 2023

It was observed that the biometric indicators of spring wheat varieties were significantly affected by irrigation rates and periods, and it was determined that the biometric indicators changed accordingly. With the increase in the number of irrigations, it became impossible to increase the productivity. In the options of wet tillering (FON), FON+2 irrigation, Fon+3 and Fon+4 irrigation, the mass of grain in one ear is from 1.26 to 1.56 g in Semurg variety, from 1.05 to 1.35 g in South Gavhari variety, respectively. up to 1.29 g to 1.67 g in the Saratov variety. The weight of 1000 grains also varies according to irrigation options, from 40.0 g to 42.0 g in the Semurg variety, from 32.5 to 35.4 g in the Janub gavhari variety, from 39.4 to 41.5 g in the Saratov variety. formed The yield was higher in the FON+3 irrigation option compared to other options. In this case, it was 44.0 t/ha in the Semurg variety, 42.8 t/ha in the Southern Gem, and 46.7 t/ha in the Saratov variety. In this option, the yield of varieties was higher by 24.3-26.2 t/ha compared to the average wet storage (FON) option, and by 15.0-16.5 t/ha compared to the FON+2 irrigation option.
Investigation of The Technological Process of Work and Justification of the Parameters of Raw Cotton
Authors: Khudaiberdiev Abduaziz , Kuychiev Odil , Nazarov Ortiq
Published: December 2023

The article substantiates the method of compaction and the parameters of the compactor of raw cotton in an elastic container, which make it possible to increase the productivity of cotton pickers due to the large capacity of the container and the increase in the coefficient of use of shift time. A layered compaction method has been studied, which makes it possible to compact the cotton mass with its continuous flow from the bottom to the neck of the container. Theoretically, the pressure in various layers of the cotton mass, the distance between the inner ends of the sealing elements, the magnitude of the stroke and the speed of movement of the sealer, the volume of the container are determined, the coefficients are found that take into account the elongation of the height of the container and the layering of the seal. All parameters are substantiated from the condition of ensuring high productivity and reliability of the cotton pickers.
Factors forming the quality of brandy distillates
Authors: Chursina Olga , Zagorouiko Viktor , Legasheva Ludmila , Pogorelov Dmitry , Belyakova Maria
Published: December 2023

The formation of brandy quality affects all stages of its production. Biological and technological properties of grapes determine the composition of aroma-producing components of brandy base wines and distillates, which participate in composing of finished product typical properties. The purpose of the study included the factors forming the quality of brandy distillates, and technological methods for their regulating. Physicochemical, biochemical and technological analyses of grape varieties were carried out. The composition features of grapes were identified depending on their origin, climatic conditions and geographical zone. A system of grape indicators in the production of brandy distillates was substantiated, on the basis of which the parameters for optimizing production processes to improve the quality of finished product were developed.
Biologically Active Feeds Based on Local Raw Materials
Authors: Milushevа Rakiya , Oynavat Avazova , Arslon Abdurasulov , Sayera Rashidova
Published: December 2023

An efficient technology for protein extraction from silk production waste has been developed. The dynamics of the degree of precipitation of alkaline hydrolysates by acetic acid has been studied. The amino acid composition of the isolated protein was determined, which contains 9 essential acids. IRspectroscopy and elemental analysis showed the purity of the isolated protein. Approbation of protein in the composition of feed in fish farming showed high fish productivity and efficiency in terms of feed ratio. The use of Bombyx mori protein for poultry in the amount of 0.5% 1% increases the gain in poultry meat and egg production by 48.25%.
Cognitive map of the model for managing the sustainability of reproductive processes in industrial viticulture
Authors: Egorov Evgeniy , Shadrina Zhanna , Kochyan Gayane , Aleynikova Galina
Published: December 2023

The necessity of developing models for managing the sustainability of reproductive processes in long-term agrocenoses with the participation of grapes is substantiated. The main trends in the grapegrowing industry development in the Russian Federation and the Krasnodar Territory are revealed. The factors affecting the level of stability and efficiency of reproduction processes in long-term agrocenoses with the participation of grapes are determined. Methodological bases for the formation of cognitive models for managing the stability of reproductive processes in ampelocenoses are proposed. A cognitive map of the model for managing the sustainability of reproductive processes in long-term agrocenoses with the participation of grapes has been constructed, which allows to give a statistical assessment of the functional relationships between factorial and resultant indicators characterizing various types of functional and system-wide sustainability of agroecosystems with the participation of grapes. The tools for managing the sustainability of reproductive processes in complex natural and man-made systems are defined.
Development of Cotton and Wheat Variety Certification Using Isr-Pcr Markers
Authors: Rashidova Dilbar , Yakubov Muzaffar , Mammadov Normukhammad
Published: December 2023

It is shown in this article, that electrophoretic spectrum of gliadin proteins consists of specific components in each variety. Among analyzed varieties there were homogeneous varieties by electrophoretic gliadin spectra as well as heterogeneous varieties. The wheat varieties Krasnodar99, Kroshka, Zimnitsa and Tanya were homogeneous, while the varieties Vostorg, Grom, Zvezda, Andizhan-2, Asr, Durdona, Dustlik, Yaksart and Chillaki were heterogeneous with 2-3 phenotypes in their electrophoretic spectrum. In the varieties Zvezda and Sila, three phenotypes and in the variety Thunder two phenotypes were found. In each variety, in addition to the main spectrum, phenotypes up to 5% were found with an electrophoretic spectrum different from the main one. In the variety Andijan-2 four biotypes with percent ratio of 80:5:5:10 and this variety has the highest number of biotypes of heterogeneous varieties. In Asr variety 3 heterogeneous biotypes with 85:10:5 ratio, in Yenbosh variety 3 biotypes with 80:10:10 ratio, in Durdon variety 2 biotypes with 70:30 ratio and in Chillaki variety also 2 biotypes with 80:20 ratio were identified. Molecular marking and genotype passporting are used in basic genetics and in applied biological science. Some wheat varieties cultivated in Uzbekistan were found to be heterogeneous and have several phenotypes in their genotype according to the electrophoretic spectrum of gliadins. To accurately determine whether the identified phenotype belongs to a particular variety, it is necessary to screen all varieties from different seed growing farms, create a catalogue of EF-spectrum passports and evaluate the varietal purity of each variety.
Analysis of Fiber Quality Using Modern Technology in Cotton Seed Production
Authors: Mirzoyokubov Komronbek , Amanturdiev Alisher , Mirzoyoqubova Nigora
Published: December 2023

The quality of the fiber samples prepared for analysis in the laboratories of the elite seed production of cotton until recently using the LPS-4 equipment, which was put into production in the early 60s of the last century, about 300 test samples picked from the seed nursery in the second year, is three, that is, breaking strength g/force, metric number , relative breaking length, g/force/tex, and determination of fiber length, which is one of the main indicators of fiber quality, has long been carried out in laboratory conditions using methods that require a lot of manual labor (velvet board, special comb and rulers). In the course of the research, samples of the elite seed farm “S-8290” cotton variety, picked from the families of the second year seed nursery, were selected by analyzing the yarn spinning coefficient using the innovative technology of Uster HVI Spectrum. Our proposed method is effective not only in increasing work efficiency but also in ensuring genetic purity of cotton varieties. A 15-20% higher yield is possible in the production of genetically pure cotton plants. According to the results of the variational statistical analysis, the modal value of the yarn spinning coefficient of the family samples collected from the second year 2018 seed nurseries of the cotton variety “S-8290” was in the range of 153-155, while it was equal to 156-158 in the family collection samples collected in 2019. In this case, individual selection seeds from families selected for yield coefficient in the first year were planted for next year’s crop without any laboratory analysis. As it can be seen from the results of the analysis of the second year, the results of the selection work on the recommended yarn spin coefficient were confirmed by the preservation of the morphoeconomic characteristics of this variety.
Think Talk Write: Efforts to Improve Students’ Critical Thinking In A Rural School Environment
Authors: Suningsih Ari , Ketut Budayasa I. , Ismail
Published: December 2023

This study aims to explain the impact of learning model and gender on critical thinking skills of junior high school students in a rural school environment. The population used is the students of the State High School IX first semester who have acquired material on the Circles and Circle Line in Pringsewu Lampung District. Think Talk Write (TTW) is a learning model that is used with the type of descriptive research and experimental semu. Data analysis using two-way ANOVA assisted SPSS 25 with a significant scale of 0.05. After the treatment, the difference in critical thinking ability based on gender obtained a significance of 0,072 > 0,05. The significance value of the learning model factor is 0,013 < 0,05, while the significance rate of the interaction of the learning model with gender is 0,230 > 0,05, so it does not give a difference to the ability to think critically. Therefore, this study indicates that only model factor influences the ability to think critically about geometry.
Revitalizing the Family Education Environment: Integrating the Values of Memayu Hayuning Bawana in Saparan Culture
Authors: Pujiyanti Arifah , Ahman Ahman , Yusuf Syamsu
Published: December 2023

This study is based on a description of Indonesian family profile data as reflected in the results of the Inter-Census Population Survey (2015) which shows that Indonesian families are not that severe or vulnerable. In 2016, there were actually fewer married couples than in 2013. but increased slightly until 2018. On the other hand, the number of divorces continues to increase. This means that the number of families separating due to divorce in Indonesia is increasing. Divorce data shows that more and more families experience shocks to their family ties every year. More than 400,000 families experienced this shock in 2018. This is a very serious issue and must be addressed immediately. The most common cause of divorce was long-term arguments or arguments (44,8%), followed by financial problems (27,17%), domestic separation (17,55%), domestic violence (2,15%), and consumer lifestyle Alcohol (0,85%). Therefore, this research is a cultural study using semiotic analysis (semiotics), that is, the study of symbols in social life, that is, the study of how symbols are generated and used in society. The result of this research is to provide the target community with cultural symbols and signs that represent the values that memayu hayuning bawana adhere to and still practice in their lives. In conclusion, the cultural values of memayu hayuning bawana are effective in strengthening the resilience of Javanese families
Malay Language Preservation In The Z Generation On Penyengat Island, Tanjungpinang City, Riau Islands
Authors: Wahyusari Ahada , Elfitra Legi , Malik Abdul , Leo Shanty Isnaini , Testy Ariance Loren Fabio , Gunawan Boby , Nurmayanti Dita , Agustianingsih Ratih , Adriyanti Sefrianto Velia , Chan Dwi Mutia
Published: December 2023

This study aims to look at the attitude of maintaining the Malay language in generation Z on Penyengat Island, Tanjungpinang City, Riau Archipelago. The object of research is generation Z on Penyengat Island, Tanjungpinang City, Riau Archipelago. This type of research is descriptive quantitative. The data collection technique used is the distribution of questionnaires. Data analysis techniques are performed based on frequency and percentage calculations. The results of the study in this study were obtained attitudinal measurements based on gender, education level, and job level. Based on the results obtained, it appears that language contact influences language retention attitudes in generation Z on Penyengat Island, Tanjungpinang City, Riau Archipelago, because the result is the lowest value, namely 0.29. However, overall, the results of the calculations show that language retention in generation z is 0.529040833, included in the value range of 0.41 – 0.60. This shows that the maintenance of the Malay language in Generation Z on Penyengat Island, Tanjungpinang City, Riau Islands is in a position of decline.
Integration of Raja Ali Haji’s Character Values in Developing Character Assessment Instruments in Indonesia
Authors: Yulita Inelda , Malik Abdul , Agust Satria
Published: December 2023

Raja Ali Haji is an important figure in the world of language and literature whose thoughts are influential in Indonesia. One of his works is Gurindam Dua Belas, which is a Malay poem created in 1847 AD. Gurindam Dua Belas has been used as a reference in instilling moral values in students. This research aims to develop a character assessment instrument that integrates Raja Ali Haji’s character values. The research carried out includes Research and Development (R&D) research, with a research design using the Model of Educational Reconstruction (MER). The results of the research show that the integrated character assessment instrument of Raja Ali Haji’s character values is suitable for use.
Breaking the Waves of Language: Unraveling Students’ Challenges with English Clauses in Coastal Environmental Discourse through a Grammar Teaching Technique
Authors: Agust Satria , Tokan Rachmahwati , Elwi Fina , Indriana Prihastini Rossa , Diva Nabila Salsa , Putri Mutiara , Rejoice Siburian Senta , Yustina Mamul Erika , Xinji Manalu Violeta , Pakpahan Julianto , Cahaya Putri Intan , Meirfandion Saputra Muhammad
Published: December 2023

The purpose of this research is to investigate the challenges that students encounter when learning English clauses in Coastal Environmental Discourse through the ‘Stepping the 5 Stairs D’ Technique. This study uses a qualitative descriptive method to complete and in-depth describe the conditions as they are, without giving treatment to or manipulating the variables studied. In collecting the data, researchers used questionnaire. The questionnaire Were 17 multiple choices questions about English clauses. And the subjects of this study were 31 English Language Education students from class K1 and K2 of 2021. From this study it was concluded that most of the 4th semester English education students were able to determine correct and incorrect sentences in sentences and it was also found that students’ ability to use ‘stepping the 5 stairs D’ in identifying main clauses and sub clauses was quite good.
Silver Nanoparticles In Cosmetics: A New Challenge Using Marine Resources
Authors: Willian Nancy , Pardi Hilfi , Fitriyah Dina , Desni Yetti Rina
Published: December 2023

Numerous developments in the medical profession are attributable to nanotechnology. Due to their promising action, nanoparticles have always been the main focus when it comes to silver and its biological synthesis. These nanoparticles’ primary field of use is medicine, where studies have examined how these particles’ size and shape affect bacteria, fungus, and other species. Using AgNPs as chemopreventive agents in sunscreen creams is one way to employ them. It is crucial to develop novel materials to shield the skin from ultraviolet (UV) radiation and preserve the body’s largest and most extensive organ, the skin’s homeostasis. To ensure maximal sun protection, it is crucial to utilize skin care products with active sun chemopreventive ingredients
Abundance and Distribution of Macroalgae in the Nusa Tenggara and Their Effect on Algae Blooms
Authors: Andini Nabila , Putri Natasha , Sinaga Jelaine Yuli Nesia , Juniati Yuniar , Aulia Chairunnisa , Ariyanti Irma , Febrianti Arrila Kurnia , Fathin Ulfiyah , Edelwis Tri Widya
Published: December 2023

Macroalgae is a primary component of coastal biodiversity that is beneficial in protecting the balance of marine ecosystems. Macroalgae is a biological resource that is quite abundant in our country Indonesia, one of which is in the waters of Nusa Tenggara. Exploration of macroalgae diversity has been conducted in Nusa Tenggara waters. Referring to this, this article aims to assess the types of macroalgae distributed and whether there are algae blooming events around the waters of Nusa Tenggara. The method used in this article is a literature review by reviewing a number of articles used as references. The steps in analyzing a number of information obtained from 30 or more related articles are: 1) Search for several articles from national and international journals that are relevant to the title of the article topic. 2) Analyzing the content of each article that has been found. 3) The results of the analysis are used as a reference in the preparation of this article. The result that the author of the article got was to find out a number of dominant algae in Nusa Tenggara waters that caused algae blooming which became a destroyer of aquatic ecosystems.
Environmental anxiety and its impact on the mental health of the individual
Authors: Prisniakova Liudmyla , Aharkov Oleh , Agapova Iryna , Aleshchenko Olha
Published: December 2023

In this study, “environmental anxiety” refers to a state of anxiety and tension that arises as a result of concern about the state of the environment and its impact on human health and safety. Psychological distress can be caused by various factors, such as stressful situations, genetic characteristics, neurochemical imbalances, psychological factors, traumatic events, chronic diseases, drug and alcohol use, as well as sociocultural influences. The main forms of environmental anxiety include: fear of environmental problems, disturbing thoughts, concern about possible health effects, hypersensitivity syndrome to environmental factors, anxiety in connection with environmental crises, social anxiety due to environmental aspects, anxiety due to news and media. These forms of anxiety can manifest in different symptoms and manifest at different levels of the personality: physical manifestations, psychological reactions, emotional manifestations, behavioral changes and physiological reactions. The possibility of developing environmental anxiety in the context of environmental issues can be explained by various psychological mechanisms, such as a perceptual filter, catastrophic thinking, a sense of security, social influence, a sense of loss of control and uncertainty, as well as psychosomatic reactions. The publication also provides various psychological approaches and methods aimed at reducing the level of environmental anxiety, such as psychological counseling, cognitive-behavioral therapy, meditation and mindfulness, exposure therapy, stress management, journaling, healthy lifestyle, outdoor recreation, positive perception and understanding of environmental aspects.
Practical approach to aspects of operation and practical use of optoelectronic linear transducer of movements of the first hazard category objects
Authors: Rayimdjanova Odinakhon , Iskandarov Usmonali , Ergashev Shokhbozjon , Tillaboev Muxiddin
Published: December 2023

The essence of this article is to study the functional application of optoelectronic linear switches and an in-depth study of their designs, as well as a theoretical study of the practical aspect of the application. The detector of parameter of the movement from «0» position got to register getting the data and transfer it into the processor. Further, it will be processing by the system equipment’s. Process scheme and order of the system given below. The main purpose of the patent and analyzer project is save and longtime control the incline higher constructions from his vertical axis. It is useful for exact control of radiocommunication system waves. Because incline of the wave from its direction will cause the damage of quality of data transmission by the system. In the end of the article made conclusions of the conducted work and made a few comparations of the existing systems. This project fixes the maximum or minimum displacements and vibration amplitudes of antenna and constructions of several kinds of high hold buildings.
Seasonal and daily blooming rhythm of watermelon (Citrullus lanatus) belonging to Cucurbitaceae family
Authors: Buriev Khasan , Zokirov Kurbonalijon
Published: December 2023

5-6 days after the watermelon seed germinated and formed a seedling, the first leaf appeared, and then every 3-4 days, leaves appeared in the next (second, fifth) short leaf interval. After the appearance of leaves, growth and development slowed down, and the seedlings became small erect bushes with unformed curls. Watermelon blooming begins 40-50 days after planting the seeds. Male flowers bloomed first, followed by female flowers 10-15 days later. Mass blooming of male flowers occurs in 60-65 days, and female flowers in 75-80 days. Male flowers bloomed 35-40 days after seed germination in the early-ripening “Uzbekskiy 452” variety of watermelon we studied and in the late-ripening “Quzibay 30” variety 45-55 days after seed germination. 6-10 days after the blooming of the male flowers, the fruit-bearing flowers bloomed in the axils of the 5-30 leaves of the main branch (stem). In the variety “Uzbekskiy 452”, the first male and fruit-bearing flowers were located throughout the plant. Blooming of fruit-bearing flowers on the main branches of “Uzbekskiy 452”, variety began on 43-47 days after germination, and on 52-60 days on “Quzibay 30” variety.
Seasonal and daily blooming rhythm of cucumber (Cucumis sativus) belonging to Cucurbitaceae family
Authors: Buriev Khasan , Zokirov Kurbonalijon
Published: December 2023

The blooming period of the cucumber plant depended on the characteristics of the varieties, meteorological conditions, the time of planting, and the order of harvesting the fruits. Generative organs appeared in the leaf axils on the 15th-18th day after germination in the “Uzbeksky 740” variety, and on the 18th-22nd day in the “Margelansky 822” variety. After some time, it was possible to determine the gender of the flower. Male flowers bloomed first: 35-40 days after germination in “Uzbeksky 740” variety, 50-55 days in “Margelansky 822” variety. Blooming of female flowers is observed after 42-47 days after germination in “Uzbeksky 740” variety and after 57-62 days in “Margelansky 822” variety. In the Tashkent region, the blooming of female flowers in the “Uzbeksky 740” variety coincided with the 40th day from the day of emergence of sprouts at the optimal density between plants. This was 45% of the period from germination to fruit ripening. When the plant thickened to 142,800/ha, the blooming of female flowers was delayed by 2 days, fruit formation by 8 days, and fruit ripening by 22 days. This was found that the period of branching - blooming occupied 38% of the period of branching - fruit ripening.
Analysis of pathogenic characteristics of fungi causing alternariosis disease in vegetable crops
Authors: Khalmuminova Gulchehra , Botirov Sodik , Goibov Bahrullo
Published: December 2023

In the article, in order to increase the yield and quality of vegetable crops grown in our Republic, the use of modern technology in their cultivation, the introduction of productive and suitable varieties for local conditions, and a number of factors have a special place in the effective protection of vegetables from various diseases. It is known that alternaria diseases of vegetable crops have been studied and scientifically based control measures have been developed. It has been proven that it is possible to recommend a chemical method against Alternaria disease in our country.
Impact of employment growth in agricultural production
Authors: Berdimurodov Usmon
Published: December 2023

The article presents indicators for determining the level of use of labor resources, reducing the period of seasonal labor of labor resources in agriculture, organizing small enterprises for industrial overproduction of agricultural products, organizing storage rooms for agricultural products, reflecting the general state of labor productivity, as well as conclusions on the effective use of labor productivity.
To examine the processes of biochemical action of cobalate ii-nitrate and quinazolin-4-on on the “Morus alba” variety of Moraceae plant of the coordination compound formed by 3-indole fatty acid
Authors: Sapaev B. , Saitkulov F.E. , Qalandarov U. , Mamedova M. , Amanov R.U.
Published: December 2023

In the article, the synthesis of quinazolin-4-on, the reaction of its interaction with indole fatty acid and the synthesis of the coordination compound formed by cobalt (II)-nitrate, the biochemical action of the mulberry plant on the “morus alba” variety of the moraceae plant with the participation of various solvents, the development of root system, photosynthesis in the leaves, and methods.
Analytical studies of the cotton seed linting process
Authors: Sabirov I. , Akhmedov D. , Khalikov A. , Madrahimov D.
Published: December 2023

Thearticle presents the history of development of cotton seeds linting technological process, brief analysis of research works carried out to improve linter productivity, theoretical analysis of seeds interaction with sawing cylinder, as well as the results of previously conducted experimental studies. On the basis of the analysis it was concluded that it is necessary to continue research work on increasing productivity of 5LP linter for seeds and getting lint. The direction of the forthcoming work was chosen, which provides for the development of the linter design using the working chamber of the gin, manufacturing of the developed linter and research of the linting process, providing rational conditions of its operation in the effective process of cotton seed linting.
Viticulture and wine production: Challenges, opportunities and possible implications
Authors: Sapaev J. , Fayziev J. , Sapaev I. , Abdullaev D. , Nazaraliev D. , Sapaev B.
Published: December 2023

Many agricultural sectors evaluate what advancements can be incorporated into their businesses to offer management support as technology keeps developing and advancing. This is especially essential to the wine business, as climate change and fluctuating atmospheric conditions, compacted seasons, drought, heat, labour shortages, and increasing production costs are all posing challenges to farmers in various parts of the world. This article aims to highlight different applications of viticulture based on digital techniques. The research will evaluate how these techniques offer opportunities for winemakers in response to increased environmental problems. The application of various proximal and remote sensing technologies has enhanced the knowledge of vineyard variation regarding geographical disparities and sequential dynamics and the underlying reasons for such variation. The study shows how knowing this information allows winemakers to use ideas more effectively through specific applications and harvest fruit packages strategically based on yield and/or fruit quality requirements and product requirements. Reduced input costs, higher efficiencies, and a better end product are all economic benefits of each of these outcomes. Since smart sensing techniques have an immense opportunity for producers at all stages, their implementation and regular use will be centered on accessible operating system and devices and the cost of integrating decision-support systems on a field scale. Data rights and security, especially when data is obtained through third parties, is a problem that must be addressed in the coming years to enable the widespread adoption of such technology.
Systematic composition of the middle Jurassic flora and its stratigraphic distribution (Ustyurt region, Uzbekistan)
Authors: Jalilov Gafur , Togaev Isomiddin , Alimov Ma’rufjon , Babajanov Farrukh , Ibragimova Zaytuna , Melikuziyev Sarvar
Published: December 2023

The article presents the systematic composition and stratigraphic distribution of the Middle Jurassic flora of Ustyurt (Uzbekistan). In the Middle Jurassic sediments, three plant complexes of different ages are distinguished, corre-sponding to aalen, bayos and bath, differing from each other by the unequal species composition of Coniopteris ferns and Nilssonia cicadas. The change of complexes during the Middle Jurassic occurred gradually. The vegetation reached its greatest dawn in the Bajocian and Bata centuries.
Turbulent mixing of two plane flows based on the SST turbulence model
Authors: Madaliev Erkin , Madaliev Murodil , Raxmankulov Salimjon , Raxmonkulova Sayramkhon
Published: December 2023

The article presents the results of the well-known SST turbulence model in the Comsol Multiphysics 6.1 software package for problems of mixing two plane flows, which are presented in the NASA database (TMR). In this work, the finite element method FEM is used for the numerical implementation of the SST turbulence equations. The results obtained are compared with the results of experimental data from the NASA database (TMR).
Comparison of turbulence models for solving problems of swirling jet flows
Authors: Madaliev Murodil , Navro'zov Dilshod , Hamrayev Yunus , Hamroyev Nasillo , Sharipova Dilnora , Do‘stova Salima
Published: December 2023

There are several turbulence models that can be used to solve the swirling jet problems, which are typical turbulence problems. A comparison of these models allows us to determine which one is better suited for a given task. When comparing turbulence models for the swirling jet problem, the most important criteria are the accuracy and stability of the solution. Accuracy is assessed by comparison with experimental data or other numerical methods, and stability is assessed by the absence of oscillations and convergence of the solution. In addition, it is also important to consider the computational complexity of each model and its applicability to a specific problem. The swirling flow in a nozzle is studied in the article using various turbulence models (SA, k-ε, k-ω, L-VEL, v2-f, yPlus, SST). To evaluate the performance of different CFD (Computational Fluid Dynamics) turbulence models, their numerical results for velocity profiles are compared with known experimental data.
Calculation of the stability of ground dam under seismic loads
Authors: Turdikulov Khusanboy
Published: December 2023

Based on the developed methodology and a set of applied programs, the finite method solved the problem of determining the stress state of a high earthen dam with seismicity of the location area of 8-9 points, taking into account design features and real inhomogeneous physical and mechanical characteristics of the soil.
Modeling and research of the operation of cognitive radio networks
Authors: Reypnazarov Ernazar , Khujamatov Halimjon , Das Debasis , Shakhobiddinov Alisher , Khasanov Doston , Babazhanova Tazakhan
Published: December 2023

Cognitive radio networks (CRN) have emerged as a promising technology to address the spectrum scarcity problem by allowing unlicensed users to access the licensed spectrum dynamically. The operation process of CRN involves several steps such as spectrum sensing, spectrum decision, and spectrum sharing. This paper provides information on the model and algorithm developed for researching the operation of cognitive radio networks and describes the results of the research. The model is built in the Matlab software environment, and the relevant results of such processes as occupying channels, detecting spectrum holes, freeing channels, adding noise to signals, and suppressing signals in cognitive radio networks are graphically depicted.
Procedure and method of marking administrative-territorial boundaries on the basis of digital technologies
Authors: Marupov Azizxon , Abdukadirova Mukharram , Mirzakarimova Gulshanoy , Rasulov Asror
Published: December 2023

This article describes the procedures and methods of using digital technologies in defining administrative-territorial boundaries and the processes of processing the results obtained with the help of digital technologies and geodetic measuring instruments through special computer programs, as well as creating maps depicting digital administrative boundaries. Brief information about the methods is provided.
Develop and usage virtual schemes of remote acoustic laser microphones with visible and invisible waves
Authors: Iskandarov Usmonali , Ismoilov Ma‘murjon , Yuldashev Nodirbek
Published: December 2023

This article developed and investigates the operation of remote acoustic laser microphones in virtual and practical circuits. Various simulation processes were studied and mainly the circuit of an open optical transmitter and receiver were simulated. Another aspect of the work are the introduction and use of a laser in the invisible light range into the system, the essence of which is explained by not causing inconvenience to the environment. The invisible wave may be ultraviolet or infrared light ranges.
Positional-velocity control of the manipulator built on the basis of an intelligent mechatron module
Authors: Rakhimov Temurbek , Erkinov Sultonbek , Takhirova Gulhayo
Published: December 2023

The use of Industry 4.0 technologies in modern production serves to increase production efficiency. Robots and robotic complexes with innovative intelligent control are widely used in industrial production. However, the variety and complexity of their control methods and modes negatively affects the operators' working time and production productivity. In such cases, it is necessary to improve the control methods and to develop the technologies used in the industry, including robots and robotic manipulators, which allow to perform short movements with high accuracy and speed. The method and modes of position-velocity control of the manipulator built on the basis of the intelligent mechatron module are considered in the article. At the same time, a structural scheme of the combined control system was developed, which calculates the values of relative movement speeds for the links of the manipulator execution mechanism based on mathematical models. In addition, the requirements for the position-velocity control system, methods for eliminating the transient processes occurring during the control process are proposed. The advantages of time saving and control method in position-velocity control during manipulator control by the operator are given.
Using the fundamentals of the theory of measurement errors in performing geodesic measurement and calculation works
Authors: Akhmedov Bakhriddin
Published: December 2023

In this article, the tasks of the theory of measurement errors during geodetic measurement and calculation practices, equal and unequal measurements and measurement errors, i.e. deviations from the actual values of the measured quantity as a result of measurement issues aimed at elucidating the work and their classifications are covered. Also, the criteria of measurement accuracy, expressions for their determination, as well as the procedure for processing one quantity measured with equal accuracy and a sample example of its implementation are given.
Applying different time enterprises rates for electricity consumption industrial and its impact on the energy system
Authors: Muratov Khakim , Isakov Abdusaid , Kadirov Kamoliddin , Kushev Alijon
Published: December 2023

This article calculates the consumption of electricity consumption in the “peak”, “half-peak” and night periods due to the application of a time-varying tariff system in an industrial enterprise and the impact on the regime of the energy system, in the article we are discussing about. If a consumer electricity at night, he will be able to pay for each kW·h of electricity consumed at a price 1.5 times lower than during the day. This, in turn, will lead to the long-term operation of networks and transformers, reducing the load period and smoothing the load schedules of the power system.
Mathematical modelling of heat and hydraulic processes in a solar air heater with a concave air duct absorber
Authors: Abdukarimov Bekzod , Toxirov Muxammadrafiq , Jamshidov Obido , Mirzayev Sardorali
Published: December 2023

Solar air heaters (collectors) are becoming increasingly popular for both heating and industrial applications due to their cheapness and ease of maintenance. However, how to increase the useful energy and thermal efficiency to be produced per unit area of solar air heaters is among the most basic research topics. In this paper, the design of a solar air heater with concave air tube absorbers was optimized by numerical modelling. For this, the behaviour of concave tube absorbers with different geometrical arrangements has been investigated. Also, in this article, a mathematical model was developed to determine the optimal geometric location of air pipes, and the reliability of the obtained results was verified. According to the simulations carried out, a checkerboard-shaped concave-tube placement on the absorber surface, perpendicular to the airflow, parallel to the airflow, and in the form of a V shape was calculated. The aerodynamically resistance coefficient of the heated air, pressure losses, and temperature changes were taken into account in the selection of geometric indicators. As a result, the situation with the lowest pressure loss was determined in Reynolds number (Re) 2000-10000 in determining the optimum geometrical layout.