bluuebunny/crossref_metadata_2025 huggingface dataset:
Potential application of bismuth oxyiodide (BiOI) when it meets light
Authors: Sun Zaichun , Amrillah Tahta
Published: February 2024

Bismuth oxyiodide (BiOI) is a type of typical two-dimensional (2D) material that is increasingly developed because of its potential for various applications, especially when it meets sunlight, and other light-related electromagnetic waves.
Dual control of stereoregularity and molecular weight in cationic polymerization of vinyl ether by tunable TADDOLs/TiCl4 initiating systems
Authors: Watanabe Hironobu , Mishima Yuji , Kanazawa Arihiro , Aoshima Sadahito
Published: February 2024

The stereoregularity and molecular weight of poly(isobutyl vinyl ether) was simultaneously controlled by TADDOL/TiCl4 initiating systems with various aryl substituents on TADDOL.
Phenol-mediated decarboxylative proton transfer of γ-methylidene-δ-valerolactones: an approach towards (E)-2,4-pentadienoates
Authors: Feng Wei , Wu Xiaoying , Song Ran , Yang Daoshan , Si Wen , Lv Jian
Published: February 2024

A phenol-mediated decarboxylative proton transfer of γ-methylidene-δ-valerolactones (GMDVs) was developed, affording the target polysubstituted (E)-2,4-pentadienoates in 99% yields with E/Z up to 99 : 1.
Base-induced azofluoroalkylation of unactivated alkenesviahalogen atom transfer
Authors: Zhang Jing , Zhao Yanchuang , Zhu Yu-Yi , Lei Peng , Liu Hanru , Wang Chang-Sheng , Xing Shuya , Liu Yong , Ni Shao-Fei , Castanheiro Thomas , Xu Li-Wen , Shao Xinxin
Published: February 2024

A base-induced three-components coupling employing unactivated alkenes, fluoroalkyl iodides and diazonium salts under mild reaction conditions has been developed.
Characterization of emerging 2D materials after chemical functionalization
Authors: Garrido Marina , Naranjo Alicia , Pérez Emilio M.
Published: February 2024

Characterizing functionalized 2D materials is not easy. We present a critical overview of the challenges, the spectroscopic, microscopic and analytical techniques available and practical examples in the literature to illustrate their correct use.
Modulating photothermocapillary interactions for logic operations at the air–water interface
Authors: Tanjeem Nabila , Kreienbrink Kendra M. , Hayward Ryan C.
Published: February 2024

Logic gates (AND, OR, and NOT) have been demonstrated at the air–water interface by using light-driven thermocapillary actuation of microscale particles.
Solvation structure regulation of deep eutectic solvents: stabilization of the zinc anode in rechargeable zinc–air batteries
Authors: Song Yang , Liu Yongduo , Luo Shijian , Yang Yuran , Chen Fadong , Wang Meng , Guo Lin , Chen Siguo , Wei Zidong
Published: February 2024

A novel water-free ZnCl2-based DES that achieves an effective regulation of the solvation structure of [ZnClx]2−x by simply controlling the concentration of ZnCl2 was developed.
Exposing the (002) active facet by reducing surface energy for a high-performance Na3V2(PO4)2F3 cathode
Authors: Li Zhuangzhi , Qiu Lang , Li Ping , Liu Hao , Wang Dong , Hua Weibo , Chen Ting , Song Yang , Wan Fang , Zhong Benhe , Wu Zhenguo , Guo Xiaodong
Published: February 2024

Carbon additives regulate Na3V2(PO4)2F3 crystal growth, achieving 82% exposure of the (002) active facet. The exposed (002) facet offers stable Na+-storage sites, lower diffusion barriers, and enhanced kinetics/stability.
Study of uricase-polynorbornene conjugates derived from grafting-from ring-opening metathesis polymerization
Authors: Davis Elizabathe , Caparco Adam A. , Jones Elizabeth , Steinmetz Nicole F. , Pokorski Jonathan K.
Published: February 2024

Grafting-from ROMP-derived polynorbornene-based UO conjugates retain bioactivity, improves stability, and evades anti-PEG recognition and could be a potential PEG alternative.
Seed longevity and genome damage
Authors: Waterworth Wanda , Balobaid Atheer , West Chris
Published: February 2024

Seeds are the mode of propagation for most plant species and form the basis of both agriculture and ecosystems. Desiccation tolerant seeds, representative of most crop species, can survive maturation drying to become metabolically quiescent. The desiccated state prolongs embryo viability and provides protection from adverse environmental conditions, including seasonal periods of drought and freezing often encountered in temperate regions. However, the capacity of the seed to germinate declines over time and culminates in the loss of seed viability. The relationship between environmental conditions (temperature and humidity) and the rate of seed deterioration (ageing) is well defined, but less is known about the biochemical and genetic factors that determine seed longevity. This review will highlight recent advances in our knowledge that provide insight into the cellular stresses and protective mechanisms that promote seed survival, with a focus on the roles of DNA repair and response mechanisms. Collectively, these pathways function to maintain the germination potential of seeds. Understanding the molecular basis of seed longevity provides important new genetic targets for the production of crops with enhanced resilience to changing climates and knowledge important for the preservation of plant germplasm in seedbanks.
Associations Between Recreational Noise Exposure and Hearing Function in Adolescents and Young Adults: A Systematic Review
Authors: Elmazoska Iris , Mäki-Torkko Elina , Granberg Sarah , Widén Stephen
Published: February 2024

Purpose:

There is an increasing concern regarding hazardous recreational noise exposure among adolescents and young adults. Daily exposure to loud sound levels over a long period of time can increase the risk of noise-induced hearing loss. The full extent of the impact of recreational noise on hearing is not yet fully understood. The purpose of this review was to synthesize research that investigated hearing function in relation to recreational noise exposure in adolescents and young adults.

Method:

A systematic literature search of five databases covering the years 2000–2023 was performed. The articles included investigated audiological measurements of hearing function in relation to recreational noise exposure.

Results:

Four hundred sixty records were identified, of which 20 met the inclusion criteria and were included in the results. This review showed that although some recreational noise activities can be potentially harmful, there is an unclear relationship between exposure and outcome. Some findings indicated hearing threshold shifts or reduced otoacoustic emission amplitudes after recreational noise exposure, but most changes were short term and in the extended high-frequency range.

Conclusions:

There seemed to be inconsistencies regarding the utilization of methods of measuring exposure and outcome between studies. This might be one reason for the differing results in studies on the reported impact on hearing function from recreational noise exposure. To draw more certain conclusions about long-term effects, there is a need for longitudinal research that utilizes sound level measurements to assess low and high degrees of recreational noise exposure in relation to hearing function.

Supplemental Material:

https://doi.org/10.23641/asha.25114193
Solving the Vehicle Routing Problem with Multiple Trips and Simultaneous Delivery-Pickup for Drinking Water Distribution Company
Authors: Nur Rizkiani Firda , Geraudy Ilham , Imran Arif
Published: February 2024

Transportation is a crucial factor in distribution, as it can save up to 50% of the overall costs. The Vehicle Routing Problem with Multiple Trips and Simultaneous Delivery-Pickup (VRPMTSDP) has become one of the most important areas of logistic management. This problem is an extension of the Vehicle Routing Problem (VRP), including the following characteristics: multiple trips and simultaneous delivery-pickup. A set of homogenous vehicles is available at the depot to deliver and pick up customer’s goods. The route of each vehicle in serving customers can cover more than one trip. This research helps to solve the problems faced by the Drinking Water Distribution Company in Bandung. Currently, they face high delivery costs and frequent driver overtime when returning to the depot, resulting in high overtime expenses. This problem can be classified as VRPMTSDP, with the aim of minimizing delivery costs. We propose a Tabu Search with the initial solution obtained using Saving Matrix and Nearest Neighbor. The results show that the proposed route by the Tabu Search algorithm saves delivery costs of 11.22% rather than the company’s current route. Sensitivity analyses are presented to understand the impact of various Tabu Search operators on the delivery cost of VRPMTSDP.
Study on Sleep Quality of Students in Regards with Cognitive Capabilities and Academic Achievement Post COVID-19 Pandemic
Authors: Wahyuning Caecilia Sri , Ramadhani Fitrah Tri , Rahmani Dinda Syifa , Moerti Antonius Tyaswidyono
Published: February 2024

A shift in lifestyle during COVID-19 pandemic affects daily conditions, including sleep condition. During pandemic, humans have plenty of time to rest by the virtue of eliminating commuting time for daily activities, therefore changing the sleeping pattern in society, including for students. Students from academic year 2020 are the first to experience online classes, but since Semester 1 of 2022/2023 academic year ITENAS are going back to normal, on-site class activities. This condition reverted the lifestyle shaped over the past two years, affecting cognitive function because one of the supporting factors of cognitive function is sleep quality. Data from ITENAS Academic Bureau showed 48% of students from 2020 suffered decline in GPA index during the first semester of 2022/2023 academic period. In this research the sleep quality of students will be studied using Pittsburgh Sleep Quality Index (PSQI), while cognitive capabilities will be observed through Cognitive Failure Questionnaire (CFQ) with special attention for student’s GPA index. From 97 students sampled for this research, there is an increase of students having bad sleeping quality at the start, during, and at the end of semester, with average percentage during all 3 periods at 89.69% of students with bad sleep quality. The number of students with high cognitive capabilities is increasing from the start, during, and after the end of semester, therefore there is no correlation between sleep quality and cognitive capabilities (p>0.05), as well as between sleep quality and academic achievement and between cognitive capabilities and academic achievement. Despite differences in sleep quality between students from Faculty of Industrial Engineering, Faculty of Civil Engineering and Planning, and Faculty of Architecture and Design, no apparent differences in cognitive capabilities and academic achievements to be observed.
Modified plywood binder preparation process: The effect of urea formaldehyde mole ratio
Authors: Dermawan Dicky , Pertiwi Dyah Setyo , Siddik Trio Muhammad
Published: February 2024

The paper highlights the importance of reducing formaldehyde emissions in plywood products due to increasing public health awareness. Lowering the formaldehyde to urea mole ratio (F/U) during UF resin preparation is a crucial step in achieving this goal. The study focuses on synthesizing UF resin through alkaline-acid process modification involving a strong acid step at the initial stage with a target viscosity range of 120 140 cP. Different F/U ratios were investigated at various condensation steps, with final molar ratios ranging from 1.5 to 1.0. Results indicate that adjusting the F/U ratio during the fourth condensation step (F/U4) is essential to meet desired viscosity requirements. Lower F/U4 ratios lead to decreased reactivity and reduced free formaldehyde content. Resin aging resulted in increased viscosity and gel time, but all resins remained suitable for application for up to three weeks after preparation. Application tests revealed that UF resin with lower F/U4 ratios produced plywood with reduced internal bonding (IB) strength and formaldehyde emissions. F/U4 = 1.1 was found to be the lowest acceptable molar ratio, with formaldehyde emissions of approximately 2 mg/L. These findings stress the importance of optimizing the UF resin synthesis process to achieve lower formaldehyde emission plywood products.
An IT Asset Governance Model Design Using COBIT 2019 And ITIL V4 Framework at BKU Itenas
Authors: Pratama Rayisa Yudha , Umaroh Sofia
Published: February 2024

Information technology is considered a critical asset in both institutions and large-scale companies. Assets within an institution/company support operational activities and business processes, making them closely related to IT governance, which directly involves IT services. Asset management in the General Finance Bureau (BKU) still faces challenges such as lack of human resources, undocumented software data, lack of audit implementation, and the absence of regular IT asset checks. COBIT 2019 with the BAI09 domain and ITIL V4 with ITAM practices are expected to work in synchronize to provide evaluation and recommendations regarding IT asset management at BKU Itenas. The research aims to measure the maturity level using COBIT 2019, conduct gap analysis, and design IT asset management governance using ITIL V4 in a sequential process starting from maturity analysis, gap analysis, design, and conclusions. The measurement of the maturity level obtained a value of 2.41 (managed), which is placed at maturity level 2. Meanwhile, target to be achieved at level 3 (defined). The GAP calculation between the current condition and the target to be achieved is 0.59. Furthermore, the recommendations include the creation of processes as guidelines for BKU Itenas in managing assets that support academic and administrative activities at Itenas.
Glaucoma Identification Using Relevance Vector Machine
Authors: Miftahuddin Yusup , Ichsan Alfian
Published: February 2024

Glaucoma is a chronic optic neuropathy characterized by curvature of the optic disc and narrowing of the visual field, accompanied by increased intraocular pressure. In glaucoma there will be a weakening of eye function with visual field defects and anatomical damage in the form of excavation (reverberation) and degeneration of the optic nerve pupil which can end in blindness. The glaucoma identification process is done by eye fundus image. The process of identifying glaucoma is still done by the ophthalmologist manually by looking at the fundus image. There are already people who have done this research using the K-NN method, but the level of accuracy is still small and has not measured the processing time for glaucoma identification. Based on this, this study will apply the Relevance Vector Machine method to the glaucoma identification system on the human retina. System performance is measured based on the values of accuracy, precision, recall, and F-Measure. Experiments were carried out on the glaucoma dataset. The average values in terms of accuracy, precision, recall, and f-measure were 80% accuracy, 86% precision, 80% recall, and 79% f-measure, respectively. These values are influenced by the number of datasets from training images, validation images, and test images. Based on these results, the proposed Relevance Vector Machine has an 80% accuracy performance.
Implementation and Optimization Of Inception Resnet-v2 with Data Balancing (Case Study Of Lung Disease Classification)
Authors: Ashari Rakhmat Galih , Muhammad Yudantira Aditya
Published: February 2024

Lungs are vital organs in humans because the process of breathing in humans occurs through the lung organs. However, there are diseases of the lungs, such as COVID-19, Pneumonia, and Tuberculosis that can disrupt the respiratory system in humans. Early detection is required by chest x-ray examination. The development of artificial intelligence technology can help classify chest x-rays with image analysis. In classification for image analysis, there are problems where the data is not balanced, which can cause errors in classification. Thus, data balancing is needed to balance the data. This study conducted training using InceptionResnet-v2 with data balancing. The best model performance results were obtained by training using random oversampling on the model using epoch 20, batch size 64, and learning rate 0.0001 with an accuracy value of 89.23%, loss 0.28, precision 90.05%, recall 89.88%, F1-score 89.74%, and AUC 98%. The accuracy value increased by 7.52% compared to the imbalanced dataset and by 1.29% compared to the random undersampling dataset. Abstract.
Utilization of Small Solar-ORC Integrated with Organic PCMs in Hungary Condition
Authors: Ismail Permana Diki , Rusirawan Dani , Farkas Istvan
Published: February 2024

Regarding solar energy resource potential, Hungary has a daily total of around 3.2 to 3.6 kWh/m2 and an annual total of approximately 1168 to 1314 kWh/m2. It makes it a good position for solar thermal collectors in combination with an ORC system. In this study, the authors investigated solar thermal as a heat source to generate electricity, with ORC utilizing R245fa as a working fluid. Due to the limited time for utilizing solar thermal by ORC, while the highest electricity usage is at night, heat storage is carried out by integrating a TES-evaporator using organic PCM.
The effect of vermicompost on the agrochemical properties of soils and the quality of pepper in the conditions of Yakutia
Authors: Grigorev Mikhail F. , Stepanova Daria I. , Grigoreva Aleksandra I. , Stepanova Svetlana I. , Tatarinova Zinaida G.
Published: February 2024

The purpose of this paper is to the results of experiments to study the effect of vermifertilizers on the agrochemical properties of soils and the quality of pepper in Yakutia. Experiments on testing vermifertilizers were carried out on peppers of the “Nezhnost” variety. Experiment scheme: 1 variant - was only with soil; variant 2 in addition to this vermicompost - 100 g; variant 3 vermicompost - 300 g; variant 4 vermicompost - 500 g; variant 5 - the biological product “Baikal EM 1” - 100 ml per well with 100 g semirotted manure. Vitamin C and nitrate content was studied in fruits. During the experiments, it was found that the optimal doses of vermicomposts made it possible to increase the content in soil mixture of nitrogen by 0.11%, P by 16.37%, K by 8.02% and organic matter by 0.34%. At the same time, vitamin C increased in the fruits of pepper and the content of nitrates decreased. The best result was obtained by the variant where 500 g of vermicompost was used, the second-best result was for the biological products “Baikal EM-1”.
Mitigating climate impact through stabilized fertilizers: enhancing agricultural sustainability
Authors: Arsanov Mаgomed , Tokaeva Madina A. , Bamatov Dzhabrail
Published: February 2024

The recognition by the global scientific community that anthropogenic activities are responsible for the negative impact of climate change has led to the emergence of numerous theses and projects aimed at mitigating humanity's adverse effects on the environment. The biosphere's inherent characteristic of movement plays a significant role in the dispersion of pollutants, rendering the notion of a national ecosystem obsolete. In light of this understanding, this project focuses on the reduction of negative climate factors through the application of stabilized fertilizers with controlled nutrient release. The primary objective is to minimize the detrimental consequences of human activities on the Earth by implementing sustainable strategies. Conventional fertilizers often result in rapid nutrient release, leading to inefficiencies and environmental repercussions. This approach optimizes nutrient utilization, mitigates nutrient losses through leaching and volatilization, and reduces environmental contamination. Slow-release fertilizers, coated products, and nutrient-specific delivery systems are potential avenues for achieving this goal. Furthermore, by reducing nutrient runoff, these fertilizers contribute to preserving water quality and safeguarding aquatic ecosystems.
Parameters of a combined plow rotor for the climatic conditions of the Bukhara region
Authors: Azizov Baxtiyor , Savriev Yuldosh , Buronov Sunatullo , Muzaffarova Nilufar
Published: February 2024

In this article, pretreatment of the soil in Bukhara includes simultaneous softening, compaction and crushing of plant residues. As a result, the movement of agricultural machinery in the field is reduced, and the compaction of the subsurface layer is reduced by 5-7 times. For this purpose, the installation and grounding of an additional rotary mill assembly to the fork body is described. Pre-sowing processing consists in the justification of constructive and technological parameters and modes of operation of the crop-milling aggregate, which improve the quality and reduce the tensile resistance. Theoretical studies were carried out using the laws of mathematical analysis and theoretical mechanics. Multi-factor experiment planning methods have been used to conduct experimental research. The results of the study were processed using the methods of Mathematical Statistics.
Studying the process of phenological monitoring of late varieties of plums grown in the climatic conditions of Namangan region
Authors: Voqqosov Zuhriddin , Khudaiberdieva Laylo , Xodzhanazarova Mutabar
Published: February 2024

In this article, the study and analysis of late varieties of plum grown by farmers and private entrepreneurs in the Yangikurgan district of Namangan region, the area where plum orchards are located, the height above sea level, during the phenological observation of Plum (Burton) variety's phenological observations show that from 10.10.2022 to 10.10.2023 budding, the beginning of vegetation, the beginning of flowering, the end of flowering, the end of branch growth, the beginning and end of autumn, the periods of watering the field, information about pesticide spraying dates, herbicide spraying dates, number, biological control.
Production process of new generation energy gels based on brown seaweed Fucus
Authors: Kovaleva Oksana , Leshchukov Konstantin , Shalimov German , Bukhvostov Yuri , Minakova Irina , Bukreeva Tatiana
Published: February 2024

The article presents the innovative development of a fucus-based energy gel. The gel is easy to use during high physical activity and it does not cause a thirsty feeling after consumption. The polysaccharide fucoidan of fucus has antiseptic, immunomodulatory, blood thinning and many other properties. The innovative technology opens fucus cells without high temperature exploration and additional chemical agents. Thus, the entire spectrum of biopolymers, vitamins, macro- and microelements vital for the restoration and normal functioning of the human body becomes available. The latest technology developed for processing seaweeds can be used to produce energy gels for athletes.
Quality indicators of roots and tubers stored in the storage facilities
Authors: Ernazarova Roziya , Maksumova Dilrabo , Gafforova Zilola , Ernazarova Samida
Published: February 2024

From the technological point of view, it is shown in detail that, how to maintain storage conditions under moderate conditions and the possibility of extending shelf life with less waste and consists of approximate calculations and often does not correspond to practice. To determine the storage method in more detail, firstly a test was conducted on the storages methods tests. Only after the basic technological characteristics of a given storage method have been developed can a conclusion be drawn about its suitability for the task at hand. For example, if you plan to store potatoes or carrots until May-June, you should prepare a refrigerator. If the storage period is set until January, then warehouse with natural ventilation or cooling with outside air using a fan is sufficient.
Calculation of wear products falling into the oil as a result of gear teeth wear
Authors: Juraeva Gulchehra , Maxmudova Nargiza , Djabborova Muqaddas , Salmanova Nozima
Published: February 2024

The article presents an overview of experimental studies of gear tooth wear, which results in the loss of wear products in the oil unit. The results of experimental studies on the wear of the tooth heads of the driving gears and the knives of the driven gear teeth are presented. The results of calculating the wear of the gear train of the unit after operating time are also presented. The coefficient of distribution of wear products between obvious gears according to the period of oil change in the unit has been established. The dependence of the linear wear of the head and leg of the teeth of the drive gear of the unit after 1000 hours of operation on the meshing height coefficient is calculated. An analytical calculation of the linear wear of gear teeth, an increase in the concentration of wear products in the oil of the unit and a decrease with an increase in the total number of gear teeth, tooth length and engagement module were made, and the results of the test work were given.
Improvement of drying technology of plums by combination and ultra-high frequency methods
Authors: Ergashev Oybek , Meliboev Mirazam , Mamatusmanova Dilnoza , Iskandarova Mukhtaram
Published: February 2024

The article presents the developed innovative vacuum-sublimation drying installation and technology for drying fruits and vegetables. Technical instructions and technical and technological parameters have been developed. The purpose of the scientific work is to improve the technology of freeze drying. In this article, based on studying the process of freeze-drying vegetables and analyzing the main parameters of its control, drying equipment has been created. It has been shown that during storage and use of fruits and vegetables, an increase in the level of organoleptic indicators (shape, size, taste, color and smell) has been achieved in comparison with analogues. The value of the research work lies in the fact that a technology for freeze-drying vegetables using ultra-high frequency energy transfer has been developed and a device has been created. The study discussed issues related to compliance with regulations and rules.
Efficacy of three bioinsecticides for control of Colorado potato beetle on potatoes
Authors: Bitkov Maxim P. , Lykov Igor N.
Published: February 2024

An experiment was conducted to evaluate the effectiveness of three commercial bioinsecticides based on the spores of Bacillus thuringiensis var. thuringiensis. The control areas were areas where no protective measures were applied. The data showed that all bioinsecticides tested were highly effective against first, second and third instar larvae of the Colorado potato beetle Leptinotarsa decemlineata. The drug “Bitoxibacillin” ensured 100% death of larvae on day 8 at a drug concentration of 10 g/l. Combined preparation “Bitoxibacillin + GUMI” containing spores of Bacillus thuringiensis var. thuringiensis and sodium salts of humic acids, led to 100% death of larvae on the 7th day of observation. As the dosage of the drug was reduced to 5 mg/L, its effectiveness decreased to a 92% mortality rate within 9 days. The complex drug “Bitoxibacillin + Actarofid” contributed to 100% death of Colorado potato beetle larvae of all ages on the 7th day of observation at a concentration of 10 g/l. During the same time interval, 82% and 94% of the larvae died at drug concentrations of 2 mg/l and 5 mg/l, respectively.
Features of research and design of the structure of natural-anthropogenic landscape complexes
Authors: Batrachenko Ekaterina A. , Brazhnik Oksana Yu. , Goneev Igor А. , Kozlova Galina V.
Published: February 2024

Intense anthropogenic impact on the landscape envelope leads to the formation of unstable natural-anthropogenic complexes. For agricultural landscapes as a category of transformed landscapes with a relatively high proportion of natural functioning mechanisms, it is necessary to study the mechanisms of formation of sustainability. The article discusses the features of using examples of landscape planning technologies for the design of sustainable agricultural landscape complexes.
Information technology: effects of application in the mining industry
Authors: Giliarova Asia A.
Published: February 2024

The influence of information technology application in the main business processes on direct and indirect effects received by mining enterprises is considered. The purpose of the study was to develop a scientific and technical approach to assess the economic effects of information technology application in the mining industry, based on parametric and scenario modeling of discounted cash flows. The results were the development of a scientific and technical approach and an algorithm for its step-by-step implementation to assess the economic effects of information technology application for a particular enterprise in the mining industry.
Comparison of the perception of space in virtual reality and in the real world
Authors: Petukhov Igor , Steshina Luydmila , Tanryverdiev Ilya , Kurasov Pavel
Published: February 2024

The subject of the study is investigation the accuracy and identify the features of spatial information perception in virtual reality. During the experiment, the subjects were asked to estimate the distances to objects and between objects in virtual environment in metric units without the presence of reference objects with known dimensions in the virtual environment. It was found that in the complete absence of metric support in the action space in the real world, subjects estimated metric distances with an error of about 2 meters at 8 meters, 3 meters at 13-15 meters, and 2 meters at 30 meters. In contrast, in a virtual environment, the subjects estimated a distance of 8 meters with an error of 4 meters, a distance of 13-15 meters with an error of 7-8 meters, and a distance of 30 meters with an error of 18 meters. Introducing metric support is likely to significantly improve the result, and abandoning the metric distance measurement scale, which is not natural for humans, will considerably increase the accuracy of spatial information perception. It should be noted that in the field of long-range vision (30 meters or more) in virtual reality, the accuracy of information perception is extremely low.
Evaluation of the influence of inhomogeneous inclusions on the stems bend of agricultural plants
Authors: Alijanov D. , Jumatov Y.K.
Published: February 2024

The work is devoted to the study of the bending of cantilever rods in the presence of inclusions leading to a significant increase in the angles of rotation of the rod sections. The presence in the structure of the rod of sections that are inhomogeneous in stiffness and are not subject to bending, but having different lengths and numbers, leads to the need to develop models of bends, in contrast to the simplified equations known in the literature. An example of the calculation of bends and stiffness of the rod in the presence of inclusions of various lengths is given. The calculation was carried out in the direct calculation mode in the PC MatLAB system. The initial data were taken for corn stalks based on field and laboratory studies of limbs within elastic deformations. Analytical models for the rigidity of the rod are obtained, calculations and graphs of the bends of the rod are given.
Analysis of greenhouse gas emissions from the surface of the reservoir
Authors: Ovsyannikova Inna , Khakimova Guzel , Kuramshina Zilya , Nagaev Eduard
Published: February 2024

The article examines the relationship between the release of greenhouse gases and the level of eutrophication and toxicity of a water body by monitoring the spatiotemporal level of eutrophication of surface waters of the Pavlovsk reservoir, and determines the eutrophication coefficient, which considers the combined influence of eutrophication and toxicity. The article is devoted to testing the developed method for determining the eutrophication coefficient of surface rivers. The laboratory experiment was carried out in accordance with the approved methodology for determining the toxicity of various water bodies and solutions of chemical substances PND F T 14.1: 2: 4.19-20131. The developed methodology was tested on water bodies experiencing the maximum impact of anthropogenic and technogenic factors. Mathematical processing of data on the content of climatically active gases obtained from field measurements was carried out. It is shown that the proposed method can be used to study the integral toxicity of not only surface and groundwater, but also wastewater. It can record the dynamics of their toxicity in space and time.
New standards of engineering training at Ufa State Petroleum Technological University
Authors: Baulin Oleg A. , Karachurina Regina F. , Khazieva Regina T.
Published: February 2024

The article proposes a competency-based approach to the training of engineering specialists. It is revealed that at present, supraprofessional skills are a priority. The authors identified five groups of transprofessional competencies and four groups of digital competencies. Within the framework of the educational policy of the Ufa State Petroleum Technical University under the program of the Ministry of Education and Science of Russia “Priority 2030” a system for assessing super-professional and digital competencies is developed. The peculiarity and uniqueness of the project lies in the development of a new system for assessing and assigning statuses in accordance with the new competency model for an advanced technology engineer. The combined assessment method is based on a combination of five effective methods for assessing super-professional skills. The article describes a pilot student rating based on the advanced technology engineer competency model carried out at the Faculty of Technology. The “golden standard of engineer” model was replicated within the framework of the Eurasian Polytechnic School of the University.
Features of obtaining wood-polymer composite materials
Authors: Asfandiyarova Liliya R. , Khakimova Guzel V. , Ovsyannikova Inna V. , Matveeva Anna Yu.
Published: February 2024

Composite materials are a trend and an inspiring area of applied research today. Plant-based materials are versatile ones. Their properties can be modified with additives and processing technology to produce a very large range of products in various applications, for decking, street and garden furniture, siding, picket fences, containers and pallets and much more. The properties of wood composite materials vary greatly depending on the recipe, method and technological parameters of processing. The paper presents a solution to use the best properties of wood and thermoplastic materials. Production of an analogue of plastic based on wood raw materials is proposed. The object of study in this work were samples of composites based on polyvinyl chloride and wood flour, containing calcium-zinc stabilizers and lubricants of various brands. The research studies the influence of various brands of complex stabilizers and lubricants on the thermal stability and water absorption of composite materials based on plant raw materials.
Waste-free life cycle of iron oxide catalysts for dehydrogenation of olefins and alkylaromatic hydrocarbons
Authors: Aminova Elmira , Kasyanova Liliya , Islamutdinova Aygul
Published: February 2024

For the processes of obtaining isoprene, styrene, divinylbenzene by dehydrogenation methods, iron oxide catalysts are used, the synthesis method of which is close to a waste-free technology. Waste is catalyst dust and chips formed during the screening stage of commercial products, flue gases formed during the activation of the catalyst. In the article, the authors consider the problems associated with waste in the production and operation of iron oxide catalysts for the dehydrogenation of olefins and alkylaromatic hydrocarbons. A method is proposed for the use of catalyst dust formed at the stage of catalyst preparation and utilization of spent iron oxide catalyst for the dehydrogenation of olefins and alkylaromatic hydrocarbons. The possibility of utilization of an ironcontaining spent catalyst for the production of iron oxide pigment and its further use in the production of building materials is shown. A number of decorative concrete samples have been prepared to study the effect of pigment as an additive on the properties of the building material. The dependence of the color gamut of the samples on the amount of pigment applied was studied, strength characteristics were studied in accordance with the regulatory requirements for strength, heat resistance and frost resistance.
Experimental study of the difference between the inter-plate holding section and the zig-zag type holding tube in a plate pasteurizer
Authors: Tojibaev Makhmudjon , Khudayberdiev Absalom
Published: February 2024

Plate heat exchangers are widely used in heat treatment of milk and milk products. The main working part of the plate pasteurizer is a heat exchange unit consisting of three parts (cooling, heating, recuperation). Plate pasteurizer, as we mentioned above, heats raw milk and is used to eliminate various bacteria and viruses that are harmful to the human body in raw milk. The holding section of the pasteurizer plays an important role in decontamination. In some pasteurizers, the holding section is located between the plates. But in modern pasteurizers, retention is carried out through an additional zig-zag tube installed on the outside. The article analyses the difference between the inter-plate holding section and the zigzag type external holding tube in the pasteurization of milk.
Study of the efficiency of the transport support of forage harvesters when harvesting corn for silage in the conditions forest-steppe zone
Authors: Galimov Rufan , Tikhonovskiy Vitaliy , Blynskii Yurii , Voinash Sergey , Dzjasheev Abdul-Mudalif , Khusainov Rail , Salimzyanov Marat
Published: February 2024

In the article, the authors presented methodological approaches and the results of a study of harvesting corn for silage. It has been established that the actual performance of high-performance forage harvesters during harvesting is significantly lower than the ideal one. The main problems were identified - the partial or complete lack of positioning, monitoring and logistics means of vehicles involved in the maintenance of forage harvesters, which leads to downtime and additional costs. Increasing the efficiency of all links of the harvesting and transport process can be achieved by using positioning to lay rational routes for moving machines on the field using the multi-link tractor and road trains. Furthermore, forecasting places and times to replace a vehicle for loading can reduce combined harvester downtime by up to 30% and increase vehicle productivity by 25% due to reduced idle runs across the field.
Empirical analysis of quantum mechanics and harmonic applications
Authors: Meng Ge , Yaode Wang
Published: February 2024

A brief review of the main ideas (interpretations) of quantum mechanics is given. Each of the considered interpretations contains a number of disputable provisions, the discussion of which allows us to develop our own understanding of the mechanism of paradoxical quantum phenomena. The article is addressed to all students who study the concepts of modern natural science, and to all readers interested in the questions what is the reality beyond the quantum mechanical experiment or if our perception really shapes the physical world in some way. The author believes that the development of quantum information technologies is impossible without answering these fundamental questions.
Evaluation of a plant for the preparation of liquid feed mixtures from the bioenergy side
Authors: Solonshickov Pavel , Tolstoukhova Irina , Shevchenko Artem
Published: February 2024

The main task of energy analysis in the broad sense of the word is to study, quantify, optimize energy flows and manage them in agricultural systems and animal husbandry in order to create such farming methods that would ensure: the maximum use of biological means of production of natural resources, substances and energy to achieve a constant and sustainable increase in the productivity of agricultural production and animal husbandry; environmental protection from destruction and pollution, preservation of water, air and food quality within the limits safe for human health (that is, the creation of a favorable environmental environment).The article discusses the assessment of the efficiency of an installation for the preparation of liquid feed mixtures for various types of animals. A method of bioenergy efficiency as an efficiency factor is proposed.
Experimental study of the dynamics of the hydrotracking system of the rotary share of a garden cultivator
Authors: Musurmonov A.T. , Olimov Sh.K. , Rakhimov Y.S.
Published: February 2024

The article presents the results of the experimental studies of the dynamics of the hydro-tracking system of the rotary share of a garden cultivator. A prototype garden cultivator equipped with a rotary flat-cutting paw controlled by a hydro mechanical device was used for the experiments. Based on the tests carried out, it is recommended to keep in production a garden cultivator with a garden cultivator with a hydromechanical device for tillage in intensive gardens with a planting pattern of up to 4 meters in a row.
Utilization of Polydioxanone Plate for Endoscopic Anterior Skull Base Repair: Operative Technique and Long-Term Cohort Outcomes
Authors: Gutierrez III Jorge A. , Soler Zachary M. , Larrew Thomas , Chapurin Nikita , Wessell Jeffrey E. , Schlosser Rodney J. , Vandergrift III W. Alexander
Published: February 2024

Objective The purpose of this study is to report the technical procedure and our experience using a polydioxanone suture (PDS) plate with dural substitute as part of a fully resorbable gasket seal technique to repair anterior skull base defects.

Methods A series of patients undergoing anterior skull base reconstruction utilizing our resorbable gasket seal technique from January 2014 to July 2022 was reviewed.

Results A total of 155 patients were included. Nine (5.8%) of the included patients developed postoperative cerebrospinal fluid (CSF) leaks requiring reoperation. There were no cases of intraoperative cranial nerve injury or internal carotid artery injury. A total of 103 (66.5%) patients were observed to have an intraoperative CSF leak, including 57 low-flow leaks and 46 high-flow leaks; 1 of 57 (1.8%) patients with low-flow leaks and 8 of 46 (17.4%) patients with high-flow leaks developed a postoperative CSF leak. During the first 3 years that this technique was utilized at our center for the management of high-flow intraoperative CSF leaks, postoperative CSF leaks were documented in 4 of 12 (33.3%) patients, in comparison to 4 of 34 (11.8%) in the following years.

Conclusion PDS plate reconstruction confers several advantages and can be used in a diverse set of operative scenarios in conjunction with other reconstruction options. There appeared to be an associated learning curve as surgeons at our center gained experience with this new technique. Our findings show that the PDS plate reconstruction is safe and effective in repairing the skull base.
Morbid Obesity and Diabetes Increase the Risk of Reoperation following Microvascular Decompression: A National Surgical Quality Improvement Program Analysis of 1,303 Patients
Authors: Dincer Alper , Tabor Joanna K. , Pappajohn Alexandros F. , O'Brien Joseph , Morales-Valero Saul , Kim Miri , Moliterno Jennifer
Published: February 2024

Background Microvascular decompression (MVD) is the preferred treatment for refractory trigeminal neuralgia (TN) and hemifacial spasm (HFS). MVD provides long-lasting results for these conditions with a relatively low risk of postoperative complications. However, reoperation rates are reported up to 11%, an unacceptably high rate for an elective procedure. We determined what factors may increase the risk of reoperation among patients undergoing MVD for TN or HFS.

Methods Patient data from 2015 to 2020 were obtained from the American College of Surgeons–National Surgical Quality Improvement Program database and were included in this study if they had a procedure corresponding to an MVD with the current procedural terminology code 61458. Patient demographics, comorbidities, and outcomes were analyzed. Patients were subsequently categorized based on body mass index (BMI) and a logistic regression analysis was used to model the association of comorbidities with reoperation and its indication.

Results The overall rate of reoperation in the cohort is 3.2 and 7.2% for patients with morbid obesity (BMI ≥ 40; p = 0.006). Patients with morbid obesity were more likely to present at a younger age (50.1 vs. 57.4; p < 0.0001), have comorbidities such as hypertension (60.9 vs. 33.5%; p < 0.0001) and diabetes (16.3 vs. 7.7%; p = 0.0002), and increased procedure duration (179 vs. 164 minutes; p = 0.02). Indications for reoperation include cerebrospinal fluid (CSF) leak (31%), wound complications (19%), refractory pain (11.9), intracranial hemorrhage (4.8%), and other/unknown (33.3%). Patients with either morbid obesity or diabetes have a 2-fold increase in risk of reoperation, while having both is associated with a 5-fold risk of reoperation.

Conclusions We demonstrate morbid obesity leads to increased procedure duration and increased risk of reoperation due to wound complications and CSF leak. In these patients, alternative treatment strategies or preoperative optimization may be reasonable to reduce the risk of surgical complications and reoperation.
Autoimmune encephalitis in a resource-limited public health setting: a case series analysis
Authors: Morillos Matheus Bernardon , Borelli Wyllians Vendramini , Noll Giovani , Piccini Cristian Daniel , Leite Martim Bravo , Finkelsztejn Alessandro , Bianchin Marino Muxfeldt , Castilhos Raphael Machado , Torres Carolina Machado
Published: February 2024

Background Autoimmune encephalitis (AE) consists of a group of acquired diseases that affect the central nervous system. A myriad of phenotypes may be present at the onset. Due to the heterogeneity of clinical presentations, it is difficult to achieve uniformity for the diagnostic and therapeutic processes and follow-up strategies.

Objective To describe a series of patients diagnosed with AE in a resource-limited public hospital in southern Brazil and to analyze therapeutics and outcomes.

Methods We retrospectively reviewed the electronic medical records of patients diagnosed with AE at the Hospital de Clínicas de Porto Alegre from 2014 to 2022. Data collected included clinical presentation, neuroimaging, cerebrospinal fluid testings, electroencephalogram, autoantibodies, treatments, outcomes, follow-up time, degree of neurological impairment, and mortality.

Results Data from 17 patients were retrieved. Eleven cases were classified as definite AE and 6 as possible AE. Autoantibodies were identified in 9 patients. Timing for diagnosis was impacted by the high costs associated with autoantibody testing. Most patients became functionally dependent (82.4%) and most survivors remained with autoimmune-associated epilepsy (75%). Five patients died during hospitalization, and one after a 26-month of follow-up.

Conclusion In this resource-limited hospital, patients with AE had a worse clinical outcome than that previously described in the literature. Development of epilepsy during follow-up and mortality were greater, whilst functional outcome was inferior. Autoantibody testing was initially denied in most patients, which impacted the definitive diagnosis and the use of second-line therapies.