bluuebunny/crossref_metadata_2025 huggingface dataset:
Scalable fabrication of ultra-fine lithiophilic nanoparticles encapsulated in soft buffered hosts for long-life anode-free Li2S-based cells
Authors: Zhou Bo , Li Ting , Hu Anjun , Li Baihai , Li Runjing , Zhao Chuan , Chen Nian , He Miao , Liu Jing , Long Jianping
Published: August 2023

A controlled and scalable fabrication for the homogeneous immobilization of gold nanoparticles in rGO hosts (Au/rGO) as an anodic interlayer for an anode-free full cell, achieving a high capacity retention of 63.3% over 200 cycles.
Boosting the voltage/capacity stability of O2-type Li-rich layered cathodes by tailoring transition metal distribution for Li-ion batteries
Authors: Hou Peiyu , Sun Zhenbo , Dong Mohan , Gong Maosheng , Li Feng , Xu Xijin
Published: August 2023

A compositionally graded O2-type Mn-based Li-rich cathode is rationally designed to alleviate disproportionation and enhance oxygen-anionic redox stability.
Electrochemical sensor based on bio-inspired molecularly imprinted polymer for sofosbuvir detection
Authors: Soliman Mahmoud A. , Mahmoud Amr M. , Elzanfaly Eman S. , Abdel Fattah Laila E.
Published: August 2023

Fabrication of an electrochemical sensor for sofosbuvir detection using a bio-inspired molecularly imprinted polymer. The functional monomer is the synthetic “mussel-inspired” methyldopa.
Determination of the crystalline size of hexagonal La1−xSrxMnO3 (x = 0.3) nanoparticles from X-ray diffraction – a comparative study
Authors: Manh Do Hung , Ngoc Nha Tran Thi , Hong Phong Le Thi , Nam Pham Hong , Thanh Tran Dang , Phong Pham Thanh
Published: August 2023

The electronic, magnetic, optical and elastic properties of nanomaterials are governed partially by the crystallite size and crystal defects.
Microwave-assisted chemoselective synthesis and photophysical properties of 2-arylazo-biphenyl-4-carboxamides from hydrazonals
Authors: Alazemi Abdulrahman M. , Dawood Kamal M. , Al-Matar Hamad M. , Tohamy Wael M.
Published: August 2023

The reaction of 3-oxo-2-arylhydrazonopropanals with acetoacetanilide in an equimolar ratio, under DBU/1,4-dioxane/microwave irradiation reaction conditions, resulted in chemoselective formation of 4-arylazo-5-hydroxy-benzamide derivatives.
A zeolitic imidazolate framework (ZIF-67) and graphitic carbon nitride (g-C3N4) composite based efficient electrocatalyst for overall water-splitting reaction
Authors: Khan Sadia , Noor Tayyaba , Iqbal Naseem , Pervaiz Erum , Yaqoob Lubna
Published: August 2023

3 wt% gC3N4 @ZIF-67/ exhibit excellent electrochemical activity during water-splitting with low overpotential of −0.246 V and 0.166 V for the “hydrogen evolution reaction” (HER) and “oxygen evolution reaction” (OER) and remained stable for 24 hours.
Gaining control on optical force by the stimulated-emission resonance effect
Authors: Kudo Tetsuhiro , Louis Boris , Sotome Hikaru , Chen Jui-Kai , Ito Syoji , Miyasaka Hiroshi , Masuhara Hiroshi , Hofkens Johan , Bresolí-Obach Roger
Published: August 2023

The resonance between an electronic transition and an incident photon flux induces a pushing optical force. Instead, non-linear stimulated emission process induces a pulling force which direction is opposition to absorption processes.
The genesis and control of microcracks in nickel-rich cathode materials for lithium-ion batteries
Authors: Liao Qin-Tao , Guo Si-Jie , Qi Mu-Yao , Zhang Si-Dong , Ma Pei-Zhong , Li Jin-Yang , Cao An-Min , Wan Li-Jun
Published: August 2023

A schematic diagram of the formation, detrimental impacts of microcracks, and the corresponding modification strategies.
An in situ dual-modification strategy for O3-NaNi1/3Fe1/3Mn1/3O2 towards high-performance sodium-ion batteries
Authors: Hong Ningyun , Li Jianwei , Guo Shihong , Han Huawei , Wang Haoji , Hu Xinyu , Huang Jiangnan , Zhang Baichao , Hua Fang , Song Bai , Bugday Nesrin , Yasar Sedat , Altin Serdar , Deng Wentao , Zou Guoqiang , Hou Hongshuai , Long Zhen , Ji Xiaobo
Published: August 2023

The V-modified NFM that couples broader Na+ diffusion layer with interface shielding is successfully in situ synthesized to exhibit a high rate capacity and excellent cycling stability with 75.8% capacity retention for 500 cycles for SIBs.
Computational discovery of diverse functionalities in two-dimensional square disulfide monolayers: auxetic behavior, high curie temperature ferromagnets, electrocatalysts, and photocatalysts
Authors: Liu Yu , Li Wenlong , Li Fengyu , Chen Zhongfang
Published: August 2023

By means of systematic density functional theory (DFT) computations, we identified 12 stable two-dimensional (2D) disulfide monolayers featuring a square lattice from a pool of 68 candidate monolayers.
Fe(iii)-incorporated porphyrin-based conjugated organic polymer as a peroxidase mimic for the sensitive determination of glucose and H2O2
Authors: Bhaduri Samanka Narayan , Ghosh Debojit , Chatterjee Sauvik , Biswas Rima , Bhaumik Asim , Biswas Papu
Published: August 2023

An Fe(iii)-incorporated porphyrin-based conjugated organic polymer is reported as a nanozyme for the efficient detection of glucose via intrinsic peroxidase activity and amperometric detection of H2O2.
Anchoring magnetic ZIF-67 on Ti3C2Tx MXene to form composite films with high electromagnetic interference shielding performance
Authors: Ma Zhenping , Zhang Lei , Wang Xianzhen , Xiao Guang , Feng Yongbao , Wang Wei , Tian Konghu , Liang Dewei , Yao Yagang , Li Qiulong
Published: August 2023

The MXene@ZIF-67/MWCNTs composite films are successfully prepared by anchoring ZIF-67 on MXene in combination with MWCNTs in a simple vacuum-assisted filtration, and provide a high EMI SE of 63.6 dB while achieving high absorption loss and good thermal conductivity.
One-step green synthesis of Cu2O/CuO@rGO composites for ppt level detection of NO2 at room temperature
Authors: Li Jinjuan , Hu Jing , Li Nan , Cheng Miao , Wei Tao , Liu Qianqian , Wang Ruirui , Li Wanfei , Ling Yun , Zhang Yafei , Liu Bo
Published: August 2023

A ppt level NO2 sensor with high sensitivity, selectivity and stability based on one-step room temperature green synthesized 550Cu2O/CuO@rGO-5 composites.
Thermally stable rare-earth-free double perovskite phosphors toward dual-mode optical thermometry and dual-functional lighting sources
Authors: Li Hong , Li Li , Mei Lingsong , Zhao Wei , Zhou Xianju , Wang Yongjie , Hua Yongbin , Du Peng
Published: August 2023

Novel Mn4+-activated Sr2LuSbO6 (SLSO) samples have a broad excitation wavelength and further emit a deep-red emission corresponding to the 2Eg → 4A2g transition, which aligns well with the absorption of plant phytochromes.
The Impact of Ankyloglossia Beyond Breastfeeding: A Scoping Review of Potential Symptoms
Authors: Cordray Holly , Mahendran Geethanjeli N. , Tey Ching Siong , Nemeth John , Raol Nikhila
Published: August 2023

Objective:

The purpose of this study was to evaluate the spectrum of pediatric quality-of-life sequelae associated with ankyloglossia that may affect children who do not undergo tongue-tie release (frenotomy) during infancy.

Data Sources:

This study contains data from PubMed, Embase, CINAHL, PsycINFO, Web of Science, and Google Scholar (1961–January 2023).

Review Method:

The review followed Preferred Reporting Items for Systematic Reviews and Meta-Analyses for Scoping Reviews reporting guidelines. Experimental and observational studies were eligible if they reported baseline outcomes associated with ankyloglossia in children above a year of age. Two reviewers independently screened studies, extracted data, and assessed quality. Low-quality studies were excluded.

Conclusions:

Twenty-six of 1,568 screened studies (> 1,228 patients) were included. Six studies were high quality and 20 were medium quality. Studies identified various symptoms that may be partially attributable to ankyloglossia after infancy, including speech/articulation difficulties, eating difficulties, dysphagia, sleep-disordered breathing symptoms, dental malocclusion, and social embarrassment such as oral hygiene issues. Multiple comparative studies found associations between ankyloglossia and risk factors for obstructive sleep apnea; a randomized controlled trial found that frenotomy may attenuate apnea severity. Ankyloglossia may also promote dental crowding.

Implications for Practice:

Ankyloglossia may be associated with myriad effects on children's quality of life that extend beyond breastfeeding, but current data regarding the impact are inconclusive. This review provides a map of symptoms that providers may want to evaluate as we continue to debate the decision to proceed with frenotomy or nonsurgical therapies in children with ankyloglossia. A continuing need exists for controlled efficacy research on frenotomy for symptoms in older children and on possible longitudinal benefits of early frenotomy for maxillofacial development.

Supplemental Material:

https://doi.org/10.23641/asha.23900199
A Vowel-Centric View Toward Characterizing Temporal Organization of Motor Speech Activities in Neurologically Impaired and Healthy Speakers
Authors: Rong Panying , Taylor Ava
Published: August 2023

Purpose:

This study tested the hypotheses that (a) motor speech activities are temporally organized around the nuclei into vowel-centric units that hold both stability and flexibility and (b) such temporal organization is impacted by motor speech impairment.

Method:

Thirteen individuals with amyotrophic lateral sclerosis and 10 healthy controls read a sentence 3 times at each of the following rates: habitual, fast, and slow. Articulatory gestures and phonatory event were assessed in two vowel-centric units, as operationally defined within and across the boundaries of two target words—
cat
and
must
—to accommodate common coda omission and coarticulation. Twelve absolute and relative timing measures centering on the nucleus were derived to characterize the temporal organization of each unit. These measures were evaluated in terms of (a) their relations with global duration across rate conditions and (b) between-groups differences for the habitual rate condition.

Results:

Both vowel-centric units remained stable in relative timing between the articulatory gestures approaching and moving away from the nucleus across rate conditions. Relative timing between the articulatory gestures and phonatory event at smaller temporal granularities varied with global duration, but in different ways for neurologically impaired and healthy speakers. Disease impacts on relative timing were only detected across word boundaries. All absolute timing measures revealed consistent temporal scaling effects and disease-related prolongations.

Conclusions:

The findings provide preliminary support for vowel-centric temporal organization of motor speech activities. Such temporal organization holds some extent of both stability and flexibility, which may facilitate the parsing of syllabic events during auditory processing, while accommodating task-specific suprasegmental variations. The timing impairments in amyotrophic lateral sclerosis are likely attributed to the disease-imposed dynamic constraints, reducing the entrainment of the related motor speech activities to the underlying linguistic elements. These findings have potential implications in guiding the assessment and management of temporal speech deficits in ALS.
An enhanced method for dialect transcription via error‐correcting thesaurus
Authors: Ma Xiaoliang , Deng Congjian , Du Dequan , Pei Qingqi
Published: August 2023

Automatic speech recognition (ASR) has been widely used in the field of customer service, but the performance of general ASR in dialect transcription is not satisfactory, especially in Guangdong Province. Targeted training of ASR transcription engine will produce effect, but the training cost is high, and it is not suitable for small‐scale training with multiple dialects and frequencies. The complaint problems in the customer service field have obvious clustering and are suitable for few‐shot and multi‐frequency training. In view of this, in the actual engineering application, the method of ASR transcribed into the dialect error correction thesaurus is tried to be used to replace the wrong words, and have achieved good results. The optimization technology after automatic speech transcription proposed in this study can improve the recognition accuracy of general ASR by 13.75% for dialect words.
Modelling and regulation of steam temperatures of a 1000‐MW double‐reheat boiler with long short‐term memory
Authors: Zhu Hengyi , Tan Peng , He Ziqian , Ma Lun , Zhang Cheng , Fang Qingyan , Chen Gang
Published: August 2023

With the increase in the proportion of new energy power generation in grids, there is an urgent need for the flexible operation of coal‐fired power plants. However, as the most efficient commercial coal‐fired power generation technology, the flexibility of double‐reheat ultra‐supercritical units is limited due to the steam temperature fluctuation in transient processes. To inhibit the steam temperature fluctuations, a data‐driven method, called long short‐term memory (LSTM) was introduced to model the dynamics of the steam temperatures of a 1000‐MW double‐reheat coal‐fired boiler. Moreover, an advanced controller was proposed by combining the LSTM‐based dynamic model and the model predictive control architecture. The results demonstrate that the LSTM model can be used to capture the time delay, multivariable coupling and non‐linear dynamics of the steam temperatures   and the proposed controller exhibits excellent performance in steam temperature regulation. The superheated steam temperature fluctuation decreases from 15.4 to 9.8°C, the primary reheat temperature fluctuation decreases from 34.6 to 8.3°C, and the secondary reheat temperature fluctuation decreases from 41.4 to 8.8°C. The proposed method has good potential to stabilize steam temperatures during transient processes of wide‐range load cycling, and finally improves the flexibility of the double‐reheat ultra‐supercritical unit.
Reliable current control for single‐phase pulse width modulation rectifiers based on H∞ loop shaping controller
Authors: Ibrahim Motaz Musa , Ma Lei , Zhao Yiming , Liu Haoran , Bo Tianci
Published: August 2023

In this study, H∞ loop shaping is designed for single‐phase pulse width modulation (PWM) rectifier under current sensor gain faults. Pre‐compensator is used to obtain the desired loop shape at all frequencies and robust stabilization through the normalized coprime factorization. The mathematical model for the rectifier is developed to obtain the nominal plant transfer function, and two algebraic Riccati equations are used to solve the designed controller and obtain the loop shaping controller by combining the designed controller with the weights. ν‐gap metric is adopted to measure the magnitude of the current sensor gain fault that can be stabilized by the controller. The proposed controller is compared with H∞‐mixed sensitivity (H∞‐MS) controller. The robustness capability and dynamic performance is investigated and, hardware‐in‐loop experimental results show excellent balance between robustness and performance in the presence of current sensor gain faults.
Compositional properties of planet-crossing asteroids from astronomical surveys
Authors: Sergeyev A. V. , Carry B. , Marsset M. , Pravec P. , Perna D. , DeMeo F. E. , Petropoulou V. , Lazzarin M. , La Forgia F. , Di Petro I. ,   the NEOROCKS team
Published: August 2023

Context. The study of planet-crossing asteroids is of both practical and fundamental importance. As they are closer than asteroids in the Main Belt, we have access to a smaller size range, and this population frequently impacts planetary surfaces and can pose a threat to life.

Aims. We aim to characterize the compositions of a large corpus of planet-crossing asteroids and to study how these compositions are related to orbital and physical parameters.

Methods. We gathered publicly available visible colors of near-Earth objects (NEOs) from the Sloan Digital Sky Survey (SDSS) and SkyMapper surveys. We also computed SDSS-compatible colors from reflectance spectra of the Gaia mission and a compilation of ground-based observations. We determined the taxonomy of each NEO from its colors and studied the distribution of the taxonomic classes and spectral slope against the orbital parameters and diameter.

Results. We provide updated photometry for 470 NEOs from the SDSS, and taxonomic classification of 7401 NEOs. We classify 42 NEOs that are mission-accessible, including six of the seven flyby candidates of the ESA Hera mission. We confirm the perihelion dependence of spectral slope among S-type NEOs, likely related to a rejuvenation mechanism linked with thermal fatigue. We also confirm the clustering of A-type NEOs around 1.5–2 AU, and predict the taxonomic distribution of small asteroids in the NEO source regions in the Main Belt.
Outskirts of Abell 1795: Probing gas clumping in the intracluster medium
Authors: Kovács Orsolya Eszter , Zhu Zhenlin , Werner Norbert , Simionescu Aurora , Bogdán Ákos
Published: August 2023

Contact. The outskirts of galaxy clusters host complex interactions between the intracluster and circumcluster media. During the evolution of clusters, ram-pressure stripped gas clumps from infalling substructures break the uniformity of the gas distribution, potentially leading to observational biases at large radii. However, assessing the contribution of gas clumping poses observational challenges and requires robust X-ray measurements in the background-dominated regime of the cluster outskirts.

Aims. The main objectives of this study are to isolate faint gas clumps from field sources and from the diffuse emission in the Abell 1795 galaxy cluster, then to probe their impact on the observed surface brightness and thermodynamic profiles.

Methods. We performed an imaging analysis on deep Chandra ACIS-I observations of the Abell 1795 cluster outskirts, extending out to ∼1.5r200 with full azimuthal coverage. We built the 0.7 − 2.0 keV surface brightness distribution from the adaptively binned image of the diffuse emission and looked for clumps in the form of >  + 2σ surface brightness outliers. Our classification of the clump candidates was based primarily on Chandra and SDSS data. Benefiting from the point source list resolved by Chandra, we extracted the thermodynamic profiles of the intracluster medium from the associated Suzaku XIS data out to r200 using multiple point source and clump candidate removal approaches.

Results. We identified 24 clump candidates in the Abell 1795 field, most of which are likely to be associated with background objects, including active galactic nuclei, galaxies, and clusters or groups of galaxies, as opposed to intrinsic gas clumps. These sources had minimal impact on the surface brightness and thermodynamic profiles of the cluster emission. After correcting for clump candidates, the measured entropy profile still deviates from a pure gravitational collapse, suggesting complex physics at play in the outskirts, which may include potential electron–ion non-equilibrium and non-thermal pressure support.
Determination of the coefficient of loosening and explosion parameters in a clamped medium in the quarry
Authors: Nasirov Utkir , Zairov Sherzod , Umarov Farxodbek , Ishankhodjaev Zokirkhodja , Mekhmonov Maqsud , Fatkhiddinov Asliddinjon
Published: August 2023

The paper describes estimates developed for the change in the loosening coefficient of the rock mass depending on the mass of the emulsion explosive charge and the grid of wells. The parameters of blasting in a clamped medium have been determined. A formula for calculating the height of the retaining wall during the explosion of borehole charges using emulsion explosives has been developed. It includes the main parameters and determines the physical and mechanical properties of rocks, the parameters of the blasted block and the mass of the emulsion explosive charge.
Assessment of the impact of biotic factors on the sustainability of forest ecosystems
Authors: Efremova Inna , Taseiko Olga , Nadezhkin Artem , Anikin Maksim
Published: August 2023

In the conditions of active development of the northern regions of Russia, the urgent task is not only strategic planning for the development of the resources of the north, but also a rational approach to the conservation of primary landscapes of ecosystems. Management of natural areas should be based on a risk-based approach that takes into account factors of biotic, abiotic and anthropogenic origin. The method of applying the Bayesian approach to assessing environmental risks is considered on the example of the forest ecosystem of the north of the Krasnoyarsk Territory. Graphical models of probability distribution take into account such elements of the system as the species composition of wood, the type of pest or disease of the forest as input data. An assessment of the probability of damage to forests showed that insect pests (Siberian silkworm, Ussuri polygraph) contribute to significant damage to forests. Economically valuable species of wood (larch, fir, cedar) are vulnerable to the impact of biotic factors. It is proposed to carry out sanitary felling as measures to prevent the death of the forest to strengthen control over the development of centers of biological threats.
Installation for testing the ability of oil-oxidizing microorganisms
Authors: Hamroyev O. , Togaev J. , Keldiyorov R. N.
Published: August 2023

The paper proposes an experimental setup simulating a storage tank for petroleum products under agricultural conditions. The research was carried out with periodic cultivation of microorganisms. The growth activity and degree of utilization of hydrocarbon-containing compounds of several strains of microorganisms were checked. The results of quantitative determination of hydrocarbons show that the examined contaminants contain hydrocarbons with a chain length from C8 to C27. The latter contain on average 68.7 % n-alkanes, 29.2 % isoalkanes and a relatively small amount of aromatic hydrocarbons. The results of studies to determine the dependence of substrate consumption and biomass growth on the duration of the process are presented.
Use of reactive power sources in improving the quality of electricity
Authors: Tovboyev Akram N. , Tog’ayev Islom B. , Uzoqov Islombek Q. , Nodirov G’ulom Y.
Published: August 2023

The losses of power and electricity have sufficiently negative and significant impact on air transmission networks. In the supply of electricity and power to electricity consumers the power supply must be reliable and of high quality without interruption. In recent years the process of uninterrupted reliable and high-quality supply of electricity has become extremely complicated. Currently measures are being developed to calculate the solution of this issue as much as possible. The problem of reactive power compensation and the quality of electricity is directly related to the immediately consumer loads, voltage and frequency. It is also a process associated with increasing the value of the system's active power coefficient to balance the total power from the ac network, not decreasing the voltage value, and reducing the harmonic components of large fluctuations in nonlinear industrial consumer loads. Voltage storage is usually required to reduce voltage changes in the power line.
Causes of the appearance of current waves in high voltage electric arc furnaces, and methods of their reduction
Authors: Narzullayev Bobur Sh. , Eshmirzaev Mirzokhid A.
Published: August 2023

This article presents a method of generation and reduction of current waves in high-voltage electric arc furnaces in industrial and mining enterprises, in contrast to existing methods. The developed method is currently relevant for the solution of problems related to the generation of current waves during the operation of high-voltage electrics are furnaces with a power of 3 MWt used in the melting and pouring of metals of different densities at the Navoi mechanical engineering plant. The main goal of implementing the developed method is to reduce the electric energy consumption of high-voltage electrics arc furnaces and to increase the efficiency of electric energy consumption of the furnace.
Researching localization of vertical axis wind generators
Authors: Tursunova Aziza , Bozorova Saodat , Ibragimova Khusniya , Bobokulov Javokhir , Abdullaev Shukhrat
Published: August 2023

The paper analyses the economic efficiency of using wind power plants in mountainous areas and small residential areas as well as the results of using vertical axis wind devices in areas with low-speed winds. So it became possible to obtain the necessary electrical energy in the less windy regions of Uzbekistan by using vertical axis wind generators. In recent years the demand for electricity is increasing gradually as a result of the sharp growth of direct production enterprises and population consumption. This demand can be compensated by using not only traditional energy sources but also non-traditional energy sources. The use of wind energy is to a certain extent the basis of energy production. Nurato district of Navoi region of Uzbekistan was selected as an object. The problems of saving and shortage of electric energy will be avoided by using the vertical axis wind generator in the regions. By moving the rotor of the wind generator the wind energy is converted into mechanical energy, which generates electrical energy through the generator. Electric power from the generator is provided by a controller that serves to monitor the charge level of the accumulator and is sent to the accumulator through the controller.
Investigation of multi loop linear magnetic circuits of electromagnetic flow converters with ring channels
Authors: Ataullaev Aminjon O. , Sayidov Muzaffar K.
Published: August 2023

Mathematical models of single and multiloop magnetic circuits of electromagnetic flow transducers with an annular channel are designed taking into account the parameters of the magnetic circuit. The possibility of compensating the difference in magnetic resistances of coaxially located concentric ferromagnetic cores and the difference in their circumference by selecting the thickness of the cores is shown. It has been installed that the magnetic flux in ferromagnetic cores is distributed along the angular coordinate. The magnetic induction in the annular channel is unevenly distributed along the radial coordinates. It was found that with an increase in the value of the attenuation coefficient of the magnetic field in the magnetic circuit, the degree of magnetic induction in the annular channel increases along the angular coordinate, while it remains constant along the radial coordinate.
Monitoring and control of the protection system of electric drives with the method of pulse-width modulation
Authors: Ataullaev Nodir , Nizomova Dilbar , Norqulov Asliddin
Published: August 2023

This article deals with increasing the stability of power supply by improving the protection and control of electric drives using the pulsewidth modulation (PWM) method. The method consists in the formation of periodic series of pulses of a certain duty cycle, creating separately positive and negative half-waves of the current sinusoid in the motor windings. The PWM method of base vectors (vector modulation) consists in switching between several pre-selected states of the inverter, each of which corresponds to a certain spatial position of the resulting voltage vector applied to the engine. In the PWM method, each phase zone is divided into 3 subzones with its own duty cycle. This method is suitable for both three-stage inverter and six-stage inverter. It can be seen in the work that the quality of the resulting current depends not only on the number of subzones for the formation of base vectors, but also on the number of voltage pulses per subzone. The more pulses fall on the formation subzone, the cleaner the resulting current curve is.
Choice of energy-saving electric drives in quasi-stationary transport systems
Authors: Eshmurodov Ziyodullo O. , Arziyev Eldor I.
Published: August 2023

This article presents the structure of a quasi-stationary scheme of conveyor belt transport systems. The ratios of transport losses and characteristics of electrical systems driven by a network and a converter are obtained. The values that affect the losses in the transport system, such as the speed and resistance forces of the conveyor belt and carrier rollers, are determined. Transport losses and characteristics of electrical systems are obtained when powered from the mains and through a converter, inverter operation for active and passive transport systems, network operation with active transport systems, network operation for passive transport systems. Factors are given when choosing energy-saving conveyor drives, a diagram for choosing the most efficient types of drive, taking into account the types of load and intended for various conveyor systems.
Development of the management system of technical indications of high-power charger-discharger rectifier device
Authors: Murodov Khasan , Karshibayev Askarbek
Published: August 2023

Uninterruptible power supply devices are the main sources of operational DC power supply to control devices and control devices. In addition, the charge-discharge rectifier devices in thermal power plants and substations are autonomous operational current sources of power plants and substations. This source is the main constant and alternating current source for relay protection devices, telecommunication devices, control and monitoring devices in power stations and substations. As switching devices, the most commonly used ones today are thyristor, controlled by the thyristor control electrode. It is possible to control the charging and discharging processes of the batteries. In this case, random charging or discharging of the battery will reduce its service life. Therefore, this article examines its management system. Today’s high-power uninterruptible power supply rectifier devices show that stations and substations are not ready for emergency situations due to their unstable operation and inability to control the state of the battery. Therefore, the improvement of this device remains the major issue.
Expanding the level of forecasting and operational planning of electric consumption at mining enterprise
Authors: Karshibayev Asqar I. , Jumayev Zavqiyor I.
Published: August 2023

To calculate the energy consumption of open pits or enterprise as a whole without determining all components of the specific consumption of electricity it is advisable to use a method based on the use of models of power consumption regimes found by the results of multivariate regression analysis. The results of research can serve as a basis for making recommendations for increasing the level of forecasting and operational planning of power consumption in mining enterprises.
Increasing the operating efficiency of mining compressor installations on the basis of improving the cooling, lubrication and air suction system
Authors: Jurayev Rustam , Xatamova Dilshoda , Pardayeva Shahlo
Published: August 2023

Pneumatic or compressed air energy is widely used in the mining industry at the same level as electrical energy. In the technological processes of mining, compressed air, acting as an energy carrier, has a significant impact on the performance of mining machines and other pneumatic energy consumers. The operating efficiency of a compressor depends to a large extent on the operation of its cooling, lubrication and air intake systems, and improving their performance significantly reduces the cost of producing compressed air. The results of scientific research on improving the efficiency of operation of mine compressor installations based on the improvement of the cooling system, lubrication and air suction are presented.
Improving the efficiency of mine compressor units based on the improvement of their cooling system
Authors: Abduazizov Nabijon , Juraev Rustam , Xatamova Dilshoda
Published: August 2023

Resource saving is one of the most important problems in the world, including for such an energy-intensive process as the operation of mining compressor units. In the mining industry, along with electrical energy, pneumatic energy or compressed air energy is widely used. Compressor units that generate this energy are the most energy-intensive equipment of the enterprise, the share of which in the balance of mining enterprises is 20-35%. The indicators of technological processes of mining enterprises depend on the level of perfection of compressor installations. Given the widespread use of compressed air, there is a need to reduce operating costs, based on the development of effective technical solutions in the production of compressed air in industrial enterprises The tasks associated with increasing the energy efficiency of the operation of compressor units have not been fully resolved.
Analysis of accidents at the facilities of main pipeline transport and oil production
Authors: Salin Alexey , Ponikarov Artem
Published: August 2023

The article presents statistical data on industrial accidents that occurred at hazardous production facilities in the oil and gas industry and main pipeline transport in the Russian Federation. The dynamics of changes in accidents has been analyzed and the damaging factors in the occurrence of fatal accidents by hazard classes have been considered. The results of this study can be used to build predictive simulation models for the purposes of technosphere safety management.
Computer simulation and optimization of the oxidation process in the production of nitric acid in the Aspen Plus environment
Authors: Mukhitdinov Djalolitdin , Sattarov Olim , Akhmatov Abdumalik , Abdullayeva Dildora , Bekchanov Elshod
Published: August 2023

The article presents a method for determining the optimal technological and design parameters of the process, as well as the procedure for conducting technological analysis in the Aspen Plus environment. With the help of a wide range of thermodynamic models and process property databases, this modeling environment allows for an accurate representation of their behavior in the production of nitric acid. By using computer modeling in Aspen Plus, a 60.09% aqueous solution of HNO3 was obtained for 93465.8 kg/h of air and 5458.9 kg/h of ammonia. The objective of this modeling was to determine the optimal process parameters and its configuration, conduct a technological analysis, and determine the flows and properties of substances at various points. The main process parameters were analyzed, and their interrelation is shown in the graphs.
Control of the lifecycle of a technological complex for the rectification of multicomponent mixtures under conditions of parameter uncertainty
Authors: Avazov Yusuf , Shodiev Marufjon , Rajabov Azamat , Turaev Khurshid
Published: August 2023

Input parameter uncertainty is paid more attention among such parameters as parameter uncertainty, model uncertainty, choice uncertainty under variability, spatial variability uncertainty, temporal variability uncertainty, inter-site variability uncertainty. When the technological component changes, the control starts working again based on a new paradigm of internal and external circuits. The possibility of using the Monte Carlo method for the analysis and estimation of the uncertainty of input parameters is presented. In the analysis of the uncertainties of the input parameters, the simplification of the selection process and the probability density functions were used. Deviations from the normal distribution were represented by a matrix transformation. The technological function of the rectification complex is presented in an expanded form, the uncertainty of parameters and control actions are highlighted separately. The influence of the uncertainty of actions and the uncertainty of input parameters on the functions performed by the technological complex, the functions of planning and coordination is analyzed. It is argued that the impact of parameter uncertainty on these functions has a direct impact on the state of the complex in its lifecycle.
Natural waves in a spatial viscoelastic cylinder with a radial crack
Authors: Kuldashov Nasriddin , Boltaev Zafar , Xudoyberdiyev Mirqosim , Juraev Uktam , Ruziyev Tulkin
Published: August 2023

The investigation of the dispersion of waves in elastic bodies with different cutouts is of great interest in various scientific and technological fields. The objective of this research is to examine the propagation of free damped waves in elastic dissipative bodies with longitudinal notches. The dynamic behavior of cylindrical bodies with different cutouts is described by the equations of viscoelasticity. The solution of a system of differential equations is expressed by cylindrical Bessel and Hankel functions. The frequency equation is solved using the Muller, Gauss, and orthogonal run methods. It is found that with a decrease in the oscillation frequency in a cylinder of a given radius, the phase and group velocities of the longitudinal wave tend to the common limit - the phase velocity of the rod waves. It is found that as the oscillation frequency reduces in a cylinder of a given radius, the phase and group velocities of the longitudinal wave tend to converge towards the common limit. Additionally, it was found that for a specific value of the Poisson's ratio (0.2833), the frequencies of the shear and radial longitudinal resonances coincide in the cylinder.
Efficiency issues of the roller squeezing process
Authors: Aliboev Kakhramon Yu. , Khurramov Shukhrat I. , Saliyev Abdumajit A.
Published: August 2023

The paper presents the results of an experimental study of the influence of the main parameters of skin squeezing on the intensity of the process. A mathematical model of the residual moisture of the skin from the main parameters of the process is obtained. It is established that a decrease in the radius and speed of the roll, as well as an increase in the linear load lead to an improvement in the effect of squeezing on the selected two-roll module.
Staying at home in the COVID-19 period: Effects on well-being and physical activity in women living with overweight or obesity
Authors: Le Foll David , Rascle Olivier , Moyon Lisa , Chalabaev Aïna
Published: August 2023

Background: Between March and May 2020, the COVID-19 pandemic led governments to take specific lockdown measures. Investigations have defined obesity as a risk factor for disease severity, but none has addressed the effects of lockdown on psychological well-being and physical activity in this population. The objective of the study was to analyze the evolution (before vs. during lockdown) of well-being and physical activity among French adult women living with overweight or obesity. Methods: 250 women, divided into 5 Body Mass Index (BMI) categories (healthy weight, overweight, obesity I, II or III), provided online information concerning their self-perceived psychological well-being and level of physical activity before and after one month (± 1 week) of lockdown. Results: This study shows that BMI is a factor that is associated with well-being and physical activity. Compared to women with a healthy weight who significantly increased their level of physical activity, those living with overweight or obesity perceived a significant decrease in psychological well-being, positive affect, and physical exercise. Conclusions: This study highlights the importance of taking into account the well-being and active behavior of women living with overweight or obesity during any lockdown period that could occur in future pandemics.
Evidenzbasierte Ernährung von
Frühgeborenen
Authors: Berns Monika , Zeller Michael
Published: August 2023

Für jedes Neugeborene und speziell für Frühgeborene
trägt die Ernährung mit Muttermilch zur Reduktion von
Morbidität und Mortalität bei und stärkt die
Mutter-(Eltern-)Kind-Bindung. Perinatalzentren müssen alles daran
setzen, die Eltern auf dem Weg zu einer erfolgreichen Laktation zu
unterstützen. Gestärkte Eltern ermöglichen auch im
weiteren Verlauf die gute Entwicklung ihres Kindes. Frauenmilchbanken
können eine wertvolle Unterstützung in diesem Prozess sein.
Neutropenie – wann ist eine GCSF Unterstützung notwendig?
Authors: Rehlinghaus Marc , Rehker Philipp , Che Yue , Grunewald Camilla Marisa , Niegisch Günter
Published: August 2023

Viele Systemtherapien, die in der Behandlung uroonkologischer Erkrankungen eingesetzt
werden, verursachen Störungen der Hämatopoese. Dadurch kann es zum Auftreten einer Neutropenie
kommen. Neutropene Patienten sind gegenüber bakteriellen, aber auch anderen Infektionen
anfällig, häufig ist Fieber bei diesen Patienten das einzige Symptom. Eine solches neutropenes
Fieber bedeutet in aller Regel nicht nur eine lebensbedrohliche Therapiekomplikation mit einer
oft deutlichen Einschränkung der Lebensqualität der Patienten, sondern kann durch
Therapieverzögerungen oder erforderliche Dosismodifikationen auch die Prognose verschlechtert.
Granulozyten-Kolonie-stimulierende Faktoren (GCSF), die eine vermehrte Bildung von
neutrophilen Granulozyten stimulieren, können sowohl zur unterstützenden Behandlung bei der
febrilen Neutropenie als auch zu deren Prophylaxe eingesetzt werden. Dabei ist die korrekte
Indikationsstellung für eine solche GCSF-Unterstützung sowohl vom generellen Risiko einer
febrilen Neutropenie, der jeweils eingesetzten Therapie, als auch von individuellen
Patientenfaktoren und dem Therapieziel (palliative vs. kurative Therapie) abhängig. Basierend
auf den aktuellen Empfehlungen der deutschen sowie internationalen Leitlinien möchte dieser
Beitrag einen aktuellen und praxisorientierten Überblick zum Einsatz von GCSF in der
Uroonkologie geben.
Carpal Tunnel Syndrome in Patients with Psoriatic Arthritis; Superb
Microvascular Imaging Findings
Authors: Akyildiz Tezcan Ezgi , Levendoglu Funda , Durmaz Mehmet Sedat , Balevi Batur Elif , Albayrak Gezer Ilknur
Published: August 2023

Background It is well known that the carpal tunnel syndrome (CTS) is the
most widespread peripheral nerve entrapment syndrome throughout the world. CTS
can also be seen more often in rheumatic disease, especially in psoriatic
arthritis (PsA). Usage of ultrasonography to diagnose CTS has been the subject
of investigations for many years. Superb microvascular imaging (SMI) is a newly
developed ultrasonographic technique to visualise vascularity. More recently,
there have been some studies on the diagnosis of CTS with SMI. However, a review
of the literature reveals that there there has been no study on the diagnosis of
CTS in PsA. This is the subject of the present report, where we evaluate the
diagnostic value of SMI in CTS in patients with PsA.

Materials and methods 30 PsA patients (56 wrists) and 26 healthy
volunteers (52 wrists) were examined in the study. Demographic and clinical
features were recorded carefully. All participants underwent a standard
electrodiagnostic study (EDS) and ultrasonographic examination within a maximum
of one week. CTS was diagnosed using EDS. The vascularity of the median nerve
was examined using a new ultrasonographic technique. SMI signals were graded
from 0 to 3.

Results There were no significant differences between groups, with respect
to their age, gender, body mass index, smoking status, and hand dominance.
Although CTS was diagnosed in 9 patients (14 wrists) in the PsA group, CTS was
not diagnosed for any patient in the control group (p=0.002). The blood
flow display ratio of SMI in the median nerve was markedly higher in CTS
patients than with controls (median (25th, 75th percentile): 2(0.75, 2), 1(0,
2); p=0.014; respectively) or compared with CTS-free PsA patients
(2(0.75, 2), 1(0, 2); p=0.030; respectively). There was no remarkable
difference between PsA patients and healthy controls with respect to the median
nerve’s blood flow display ratio (median (25th, 75th percentile): 1(0,
2), 1(0, 2); p=0.164; respectively).

Conclusion To the best our knowledge, this is the first study assessing
SMI in the diagnosis of CTS in PsA patients. We concluded that SMI has important
diagnostic value in PsA patients for diagnosing CTS.
Was ist wirksam in forensischer Suchtbehandlung? – Ein
nicht-systematischer Einblick in die Evidenzbasierung von
Behandlungsansätzen und Interventionen im Kontext des § 64
StGB
Authors: Querengässer Jan
Published: August 2023

Forensische Suchtbehandlung nach § 64 Strafgesetzbuch spielt im deutschen
Maßregelvollzugssystem zahlenmäßig eine immer
größere Rolle. In den letzten Jahren stand die Frage der
Wirksamkeit der Behandlung insgesamt im Fokus zahlreicher Studien. Seltener
beschäftigte sich die Forschung jedoch mit der Evidenzbasierung
einzelner Interventionen und Wirkfaktoren. Der Artikel gibt einen
nicht-systematischen Einblick in den aktuellen Kenntnisstand zu spezifischen
Interventionen und Wirkfaktoren in der Behandlung suchtkranker
Straftäter. Im Ergebnis lässt sich die Frage, was genau wirkt,
nur rudimentär beantworten. Das Konzept der Therapeutischen Gemeinschaft
erscheint weitgehend empirisch belegt. Trotz schmaler Evidenzbasis
können als aussichtsreiche Therapieformen am ehesten Motivational
Interviewing und die Dialektisch-Behaviorale Therapie gelten.
Möglicherweise liegt die Wirksamkeit forensischer Suchtbehandlung
weniger in der Applikation einzelner Ansätze begründet als in
Fragen des Settings und der Haltung der Behandelnden.
Metal-Free Catalyzed Defluorinative O-Arylation of Pyrazolones with Polyfluoroarenes
Authors: Qin Tao , Liu Bin , Yang Liu
Published: August 2023

An efficient and general method for defluorinative O-arylation of pyrazolones has been successfully developed under metal-free conditions. This methodology allows for the synthesis of desired products by using a wide range of pyrazolones and polyfluoroarenes as starting materials. The compatibility of various substrates was demonstrated, ensuring the applicability of this method. Furthermore, the synthesis of the target compounds at a gram scale and the ability to perform late-stage modifications highlight the potential of this approach in preparative pharmaceutical synthesis and organofluorine chemistry.
Self-Reported Olfactory Outcomes in Transplanum and Transtuberculum Approaches
Authors: Balogun Zainab , Dharmarajan Harish , Kanwar Anandraj , Gardner Paul A. , Zenonos Georgios A. , Snyderman Carl H. , Traylor Katie , Wang Eric W.
Published: August 2023

Objectives The aim of this study was to determine the clinical characteristics and cephalometric risk factors associated with decreased postoperative olfaction in patients in whom the transplanum and transtuberculum expanded endonasal approach (EEA) was performed.

Methods A retrospective cohort of 41 patients treated with the transplanum and transtuberculum EEA was divided into two groups based on the maximum change in the postoperative 22-item Sino-Nasal Outcome Test (SNOT22) olfaction score: prolonged olfactory loss group (n = 5) with a ΔSNOT22 olfaction score of ≥ 4 without a return to baseline and a preserved olfaction group (n = 36) with a ΔSNOT22 olfaction score ≤ 3 with return to baseline on follow-up of at least 3 months. Demographics, operative details, and cephalometric measurements were compared between the two groups.

Results There were no differences in terms of the type of surgical approach (transplanum and transtuberculum), resection of turbinates (middle and superior), use of reconstructive flap (nasoseptal flap and reverse flap), or tumor pathology between the two groups. In the prolonged olfactory loss group, there was a smaller angle between the planum and the face of the sella (89.75 ± 9.18 vs. 107.17 ± 16.57 degrees, p = 0.05) and a smaller angle between the anterior nasal spine and the sphenoid sinus face (21.20 ± 2.49 vs. 25.89 ± 4.90 degrees, p = 0.047) compared with the preserved olfaction group.

Conclusion Patients with a narrow angle between the planum and the face of the sella or that between the anterior nasal spine and the sphenoid sinus face are at a higher risk of prolonged olfactory dysfunction with the transplanum and transtuberculum approaches.

Level of Evidence IV.