bluuebunny/crossref_metadata_2025 huggingface dataset:
Realness of face images can be decoded from non-linear modulation of EEG responses
Authors: Chen Yonghao , Stephani Tilman , Bagdasarian Milena Teresa , Hilsmann Anna , Eisert Peter , Villringer Arno , Bosse Sebastian , Gaebler Michael , Nikulin Vadim V.
Published: March 2024

Artificially created human faces play an increasingly important role in our digital world. However, the so-called uncanny valley effect may cause people to perceive highly, yet not perfectly human-like faces as eerie, bringing challenges to the interaction with virtual agents. At the same time, the neurocognitive underpinnings of the uncanny valley effect remain elusive. Here, we utilized an electroencephalography (EEG) dataset of steady-state visual evoked potentials (SSVEP) in which participants were presented with human face images of different stylization levels ranging from simplistic cartoons to actual photographs. Assessing neuronal responses both in frequency and time domain, we found a non-linear relationship between SSVEP amplitudes and stylization level, that is, the most stylized cartoon images and the real photographs evoked stronger responses than images with medium stylization. Moreover, realness of even highly similar stylization levels could be decoded from the EEG data with task-related component analysis (TRCA). Importantly, we also account for confounding factors, such as the size of the stimulus face’s eyes, which previously have not been adequately addressed. Together, this study provides a basis for future research and neuronal benchmarking of real-time detection of face realness regarding three aspects: SSVEP-based neural markers, efficient classification methods, and low-level stimulus confounders.
EHD instability of a cylindrical interface separating two couple-stress fluids
Authors: Moatimid Galal M. , Amer Mohamed F. E. , Ibrahim Doaa A.
Published: March 2024

This article is an attempt at examining the axi-symmetric and asymmetric streaming flows described by the CSF framework. A liquid that has microfibers implanted in it, like a fiber-reinforced composite substance, is so-called CSF. It is a system that consists of an endless vertical cylindrical interface that separates the two CSF structure. The CSFs are increasingly growing significant in modern manufacturing and technology, necessitating greater research into these fluids. An axial EF acts over the cylindrical contact in addition to the influence of CSF. The VPT is employed for the sake of convenience to minimize mathematical complexity. Combining the elementary linear equations of motion and the proper linear related BCs is the major procedure of the linear technique. A collection of physically dimensionless numbers is produced using a non-dimensional process. Subsequently, the requirements for hypothetical linear stability are developed. With the aid of the Gaster's theorem, the MS is applied in computing the dispersion relationships. After carefully examining a variety of effects on the stability investigation of the system at issue, it has been shown that the system is more unstable when a porous material is present than it would be without one. The resulting axisymmetric disturbance situation is more unstable. The linear techniques are depicted throughout a number of graphs.
Morinda citrifolia fruit extract enhances the resistance of Penaeus vannamei to Vibrio parahaemolyticus infection
Authors: Moh Julia Hwei Zhong , Okomoda Victor Tosin , Mohamad Nurshahieda , Waiho Khor , Noorbaiduri Shaibani , Sung Yeong Yik , Manan Hidayah , Fazhan Hanafiah , Ma Hongyu , Abualreesh Muyassar H. , Ikhwanuddin Mhd
Published: March 2024

Vibrio parahaemolyticus is a gram-negative facultative anaerobic bacterium implicated as the causative agent of several shrimp diseases. As part of the effort to provide biocontrol and cost-effective treatments, this research was designed to elucidate the effect of Morinda citrifolia fruit extract on the immunity of Penaeus vannamei postlarvae (PL) to V. parahaemolyticus. The methanol extract of M. citrifolia was vacuum evaporated, and the bioactive compounds were detected using gas chromatography‒mass spectrometry (GC‒MS). Thereafter, P. vannamei PL diets were supplemented with M. citrifolia at different concentrations (0, 10, 20, 30, 40, and 50 mg/g) and administered for 30 days before 24 h of exposure to the bacterium V. parahaemolyticus. A total of 45 bioactive compounds were detected in the methanol extract of M. citrifolia, with cyclononasiloxane and octadecamethyl being the most abundant. The survival of P. vannamei PLs fed the extract supplement was better than that of the control group (7.1–26.7% survival greater than that of the control group) following V. parahaemolyticus infection. Shrimp fed 50 mg/g M. citrifolia had the highest recorded survival. The activities of digestive and antioxidant enzymes as well as hepatopancreatic cells were significantly reduced, except for those of lipase and hepatopancreatic E-cells, which increased following challenge with V. parahaemolyticus. Histological assessment of the hepatopancreas cells revealed reduced cell degeneration following the administration of the plant extracts (expecially those fed 50 mg/g M. citrifolia) compared to that in the control group. Therefore, the enhanced immunity against V. parahaemolyticus infection in P. vannamei could be associated with the improved hepatopancreas health associated with M. citrifolia fruit extract supplementation.
Molecular dynamics simulation of carbon nanotube growth under a tensile strain
Authors: Yamanaka Ayaka , Jono Ryota , Tejima Syogo , Fujita Jun-ichi
Published: March 2024

We performed molecular dynamics simulations of carbon nanotube (CNT) to elucidate the growth process in the floating catalyst chemical vapor deposition method (FCCVD). FCCVD has two features: a nanometer-sized cementite (Fe$$_3$$

3

C) particle whose melting point is depressed because of the larger surface-to-volume ratio and tensile strain between the growing CNT and the catalyst. The simulations, including these effects, demonstrated that the number of 6-membered rings of the (6,4) chiral CNT constantly increased at a speed of $${1}\,{\textrm{mm}/\textrm{s}}$$

1

mm
/
s

at $${1273}\,{\textrm{K}}$$

1273

K

, whereas those of the armchair and zigzag CNTs were stopped in the simulations and only reached half of the numbers for chiral CNT. Both the temperature and CNT chirality significantly affected CNT growth under tensile strain.
Synthesis, anticancer activity, and molecular docking of half-sandwich iron(II) cyclopentadienyl complexes with maleimide and phosphine or phosphite ligands
Authors: Das Sujoy , Strachanowska Marcelina , Wadowski Piotr , Juszczak Michał , Tokarz Paulina , Kosińska Aneta , Palusiak Marcin , Rybarczyk-Pirek Agnieszka J. , Wzgarda-Raj Kinga , Vasudevan Saranya , Chworos Arkadiusz , Woźniak Katarzyna , Rudolf Bogna
Published: March 2024

In these studies, we designed and investigated the potential anticancer activity of five iron(II) cyclopentadienyl complexes bearing different phosphine and phosphite ligands. All complexes were characterized with spectroscopic analysis viz. NMR, FT–IR, ESI–MS, UV–Vis, fluorescence, XRD (for four complexes) and elemental analyses. For biological studies, we used three types of cells—normal peripheral blood mononuclear (PBM) cells, leukemic HL-60 cells and non-small-cell lung cancer A549 cells. We evaluated cell viability and DNA damage after cell incubation with these complexes. We observed that all iron(II) complexes were more cytotoxic for HL-60 cells than for A549 cells. The complex CpFe(CO)(P(OPh)3)(η1-N-maleimidato) 3b was the most cytotoxic with IC50 = 9.09 µM in HL-60 cells, IC50 = 19.16 µM in A549 and IC50 = 5.80 µM in PBM cells. The complex CpFe(CO)(P(Fu)3)(η1-N-maleimidato) 2b was cytotoxic only for both cancer cell lines, with IC50 = 10.03 µM in HL-60 cells and IC50 = 73.54 µM in A549 cells. We also found the genotoxic potential of the complex 2b in both types of cancer cells. However, the complex CpFe(CO)2(η1-N-maleimidato) 1 which we studied previously, was much more genotoxic than complex 2b, especially for A549 cells. The plasmid relaxation assay showed that iron(II) complexes do not induce strand breaks in fully paired ds-DNA. The DNA titration experiment showed no intercalation of complex 2b into DNA. Molecular docking revealed however that complexes CpFe(CO)(PPh3) (η1-N-maleimidato) 2a, 2b, 3b and CpFe(CO)(P(OiPr)3)(η1-N-maleimidato) 3c have the greatest potential to bind to mismatched DNA. Our studies demonstrated that the iron(II) complex 1 and 2b are the most interesting compounds in terms of selective cytotoxic action against cancer cells. However, the cellular mechanism of their anticancer activity requires further research.
Clinical and imaging characteristics of growing skull fractures in children
Authors: Zhao Qingshuang , Ying Jianbin , Chen Yehuang , Chen Fan , Zhang Taotao , Jing Junjie
Published: March 2024

Growing skull fracture (GSF) is an uncommon form of head trauma among young children. In prior research, the majority of GSFs were typically classified based on pathophysiological mechanisms or the duration following injury. However, considering the varying severity of initial trauma and the disparities in the time elapsed between injury and hospital admission among patients, our objective was to devise a clinically useful classification system for GSFs among children, grounded in both clinical presentations and imaging findings, in order to guide clinical diagnosis and treatment decisions. The clinical and imaging data of 23 patients less than 12 years who underwent GSF were retrospectively collected and classified into four types. The clinical and imaging characteristics of the different types were reviewed in detail and statistically analyzed. In all 23 patients, 5 in type I, 7 in type II, 8 in type III, and 3 in type IV. 21/23 (91.3%) were younger than 3 years. Age ≤ 3 years and subscalp fluctuating mass were common in type I–III (P = 0.026, P = 0.005). Fracture width ≥ 4 mm was more common in type II–IV (P = 0.003), while neurological dysfunction mostly occurred in type III and IV (P < 0.001).Skull “crater-like” changes were existed in all type IV. 10/12 (83.3%) patients with neurological dysfunction had improved in motor or linguistic function. There was not improved in patients with type IV. GCS in different stage has its unique clinical and imaging characteristics. This classification could help early diagnosis and treatment for GCS, also could improve the prognosis significantly.
Poverty line income and fisheries subsidies in developing country fishing communities
Authors: Teh Louise S. L. , Teh Lydia C. L. , Giron-Nava Alfredo , Sumaila U. Rashid
Published: March 2024

Eradicating poverty and harmful fisheries subsidies are two pressing challenges frequently addressed in international agendas for sustainable development. Here we investigate a potential solution for addressing both challenges simultaneously by asking the hypothetical question: to what extent can harmful fisheries subsidies provided by a country finance the cost of lifting fishers out of poverty? Focusing on 30 coastal least developed countries, we find that fishers in 87% of these countries do not earn sufficient income to satisfy the extreme poverty line income of USD 1.90/person/day, and that it would cost an estimated USD 2.2 to 2.6 billion to lift these fishers to different levels of poverty line incomes. Our analysis further suggests that at the country level, redirected harmful fisheries subsidies can cover the entire cost of covering the poverty income gap for between 37 to 43% of assessed countries. Our results provide quantitative evidence that can be used to support simultaneous progress towards achieving several Sustainable Development Goals, including those dealing with poverty reduction, food insecurity, and ocean sustainability.
Network integration of thermal proteome profiling with multi-omics data decodes PARP inhibition
Authors: Burtscher Mira L , Gade Stephan , Garrido-Rodriguez Martin , Rutkowska Anna , Werner Thilo , Eberl H Christian , Petretich Massimo , Knopf Natascha , Zirngibl Katharina , Grandi Paola , Bergamini Giovanna , Bantscheff Marcus , Fälth-Savitski Maria , Saez-Rodriguez Julio
Published: March 2024

Complex disease phenotypes often span multiple molecular processes. Functional characterization of these processes can shed light on disease mechanisms and drug effects. Thermal Proteome Profiling (TPP) is a mass-spectrometry (MS) based technique assessing changes in thermal protein stability that can serve as proxies of functional protein changes. These unique insights of TPP can complement those obtained by other omics technologies. Here, we show how TPP can be integrated with phosphoproteomics and transcriptomics in a network-based approach using COSMOS, a multi-omics integration framework, to provide an integrated view of transcription factors, kinases and proteins with altered thermal stability. This allowed us to recover consequences of Poly (ADP-ribose) polymerase (PARP) inhibition in ovarian cancer cells on cell cycle and DNA damage response as well as interferon and hippo signaling. We found that TPP offers a complementary perspective to other omics data modalities, and that its integration allowed us to obtain a more complete molecular overview of PARP inhibition. We anticipate that this strategy can be used to integrate functional proteomics with other omics to study molecular processes.
Anti-diabetic properties of brewer's spent yeast peptides. In vitro, in silico and ex vivo study after simulated gastrointestinal digestion
Authors: Aquino Marilin E. , Drago Silvina R. , Sánchez de Medina Fermín , Martínez-Augustin Olga , Cian Raúl E.
Published: March 2024

Brewer's spent yeast (BSY) hydrolysates are a source of antidiabetic peptides.
Facile synthesis of a novel covalent triazine framework for recovering gold(i) from thiosulfate solution
Authors: Zeng Yongmao , Chen Shuliang , Li Xinrong , Lin Yue , Zhao Li , Yang Rencong , Li Wanting , Hu Xianzhi , Zi Futing
Published: March 2024

CTF-MG as a novel polymer adsorbent was prepared via amine–aldehyde condensation between melamine and glutaraldehyde, and exhibited excellent properties for gold(i) thiosulfate complex formation.
Wurtzite vs. rock-salt MnSe epitaxy: electronic and altermagnetic properties
Authors: Grzybowski Michał J. , Autieri Carmine , Domagala Jaroslaw , Krasucki Cezary , Kaleta Anna , Kret Sławomir , Gas Katarzyna , Sawicki Maciej , Bożek Rafał , Suffczyński Jan , Pacuski Wojciech
Published: March 2024

It is possible to obtain thin films of both the intriguing altermagnetic wurtzite phase of MnSe and more common rock-salt MnSe using molecular beam epitaxy on GaAs substrates.
CoO/Co-graphene quantum dots as an oxidative mimetic nanozyme for the colorimetric detection of l-cysteine
Authors: Xu Dan , Tu Qingbo , San Xin , Zhu Anhong , Li Xinru
Published: March 2024

The preparation of CoO/Co-graphene quantum dots nanozymes with high oxidase-like activity.
A linker selective retention strategy to construct hierarchical porous metal–organic frameworks with high catalytic activity for oxidative desulfurization
Authors: Sun Xiaowen , Gu Yun-Feng , Zhang Xiao-Min , Shen Yan , Wang Dan-Hong , Zhang Shu-Ming , Yu Mei-Hui , Chang Ze
Published: March 2024

UiO-66 featuring hierarchical pores and abundant Lewis acid sites was successfully constructed through the linker selective retention strategy, and it exhibits excellent ODS performance for diphenylthiophene.
Induction of autism-related behavior in male mice by early-life vitamin D deficiency: association with disruption of the gut microbial composition and homeostasis
Authors: Cui Jingjing , Wang Shumin , Zhai Zidan , Song Xiaoyue , Qiu Ting , Yu Leilei , Zhai Qixiao , Zhang Heng
Published: March 2024

Our findings confirm that maternal VD deficiency during pregnancy and lactation is a risk factor for autism in the offspring, and that disturbances in the offspring's gut microbiota are at least partially responsible for this effect.
Astaxanthin targets IL-6 and alleviates the LPS-induced adverse inflammatory response of macrophages
Authors: Wu Yahui , Bashir Mona A. , Shao Changsheng , Wang Han , Zhu Jianxia , Huang Qing
Published: March 2024

AST exerts anti-inflammatory effects and may target IL-6 to inhibit the positive feedback loop of inflammatory factors, thereby effectively reducing adverse inflammatory responses.
P-doped MOF-derived NiMo bimetallic sulfide used as a high efficiency electrocatalyst for oxygen evolution reaction
Authors: Chen Bingyu , Zhu Shuifeng , Qian Yafeng , Wu Dong , Huang Linghui , Wang Jingwen , Xie Aijuan , Luo Shiping
Published: March 2024

The synthetic pathway and OER process of NiMo-P/S.
DFT study on isothiourea-catalyzed C–C bond activation of cyclobutenone: the role of the catalyst and the origin of stereoselectivity
Authors: Li Daochang , Wang Yang
Published: March 2024

The mechanism of organocatalytic C-C bond activation have been theoretically investigated.
The synthesis of alk-2-ynl Weinreb amides via Pd/Cu-catalysed oxidative carbonylation of terminal alkynes
Authors: Mourya Bharati , Gadge Sandip T. , Bhanage Bhalchandra M.
Published: March 2024

Synthesis of alk-2-ynl-Weinreb amides via Pd-catalyzed oxidative carbonylation of terminal alkynes and N,O-dimethylhydroxylamine hydrochloride at room temperature under low CO/O2 pressure is reported for the first time.
Citric acid cross-linking of a hydrogel from Aloe vera (Aloe barbadensis M.) engenders a pH-responsive, superporous, and smart material for drug delivery
Authors: Irfan Jaffar , Ali Arshad , Hussain Muhammad Ajaz , Haseeb Muhammad Tahir , Naeem-ul-Hassan Muhammad , Hussain Syed Zajif
Published: March 2024

The current research work is based on the evaluation of a citric acid (CA) cross-linked Aloe vera (Aloe barbadensis M.) leaf hydrogel (CL-ALH) for pH-dependent and sustained drug release application.
Accurate semi‐direct lidar‐inertial odometry based on distance and normal direction
Authors: Yao Erliang , Song Haitao , Zhao Jing
Published: March 2024

To improve the autonomous navigation capability of unmanned platforms, an accurate semi‐direct lidar‐inertial odometry algorithm with a new point cloud alignment evaluation metric is proposed. The lidar scan points are corrected through IMU (Inertial Measurement Unit) backward propagation, and the navigation states are predicted through IMU forward propagation. In the update of the navigation states, the point cloud alignment is evaluated based on the distances and the minimum normal direction deviations between the lidar scan points and the local fitted planes of the built map, achieving accurate observations for the navigation states. The proposed algorithm updates navigation states based on the iterative extended Kalman filter. Experiments indicate that the proposed algorithm has higher positioning accuracy than the state‐of‐the‐art method, which gets smaller positioning error (7.868 m) and 52.3% improvement on average.
Scattering from a semi‐elliptical cavity with arbitrary orientation placed in a perfect electric conductor plane
Authors: Bozorgi Mehdi
Published: March 2024

A semi‐analytic solution for scattering from a semi‐elliptical cavity with arbitrary orientation placed in a perfect electric conductor plane is suggested. By imposing the boundary conditions at an elliptical border, three independent equations containing the Mathieu functions series are extracted. Finally, the solution of the problem is reduced to the solution of a simple system of linear equations by using Mathieu function addition theorem and the orthogonal properties of the angular Mathieu functions. Some examples are presented to demonstrate the reliability and the accuracy of the proposed solution.
Pulsar-wind-nebula-powered Galactic center X-ray filament G0.13–0.11
Authors: Churazov Eugene , Khabibullin Ildar , Barnouin Thibault , Bucciantini Niccolò , Costa Enrico , Di Gesu Laura , Di Marco Alessandro , Ferrazzoli Riccardo , Forman William , Kaaret Philip , Kim Dawoon E. , Kolodziejczak Jeffery J. , Kraft Ralph , Marin Frédéric , Matt Giorgio , Negro Michela , Romani Roger W. , Silvestri Stefano , Soffitta Paolo , Sunyaev Rashid , Svoboda Jiri , Vikhlinin Alexey , Weisskopf Martin C. , Xie Fei , Agudo Iván , Antonelli Lucio A. , Bachetti Matteo , Baldini Luca , Baumgartner Wayne H. , Bellazzini Ronaldo , Bianchi Stefano , Bongiorno Stephen D. , Bonino Raffaella , Brez Alessandro , Capitanio Fiamma , Castellano Simone , Cavazzuti Elisabetta , Chen Chien-Ting , Ciprini Stefano , De Rosa Alessandra , Del Monte Ettore , Di Lalla Niccolò , Donnarumma Immacolata , Doroshenko Victor , Dovčiak Michal , Ehlert Steven R. , Enoto Teruaki , Evangelista Yuri , Fabiani Sergio , García Javier A. , Gunji Shuichi , Hayashida Kiyoshi , Heyl Jeremy , Iwakiri Wataru , Jorstad Svetlana G. , Karas Vladimir , Kislat Fabian , Kitaguchi Takao , Krawczynski Henric , La Monaca Fabio , Latronico Luca , Liodakis Ioannis , Maldera Simone , Manfreda Alberto , Marinucci Andrea , Marscher Alan P. , Marshall Herman L. , Massaro Francesco , Mitsuishi Ikuyuki , Mizuno Tsunefumi , Muleri Fabio , Ng Chi-Yung , O’Dell Stephen L. , Omodei Nicola , Oppedisano Chiara , Papitto Alessandro , Pavlov George G. , Peirson Abel L. , Perri Matteo , Pesce-Rollins Melissa , Petrucci Pierre-Olivier , Pilia Maura , Possenti Andrea , Poutanen Juri , Puccetti Simonetta , Ramsey Brian D. , Rankin John , Ratheesh Ajay , Roberts Oliver J. , Sgrò Carmelo , Slane Patrick , Spandre Gloria , Swartz Douglas A. , Tamagawa Toru , Tavecchio Fabrizio , Taverna Roberto , Tawara Yuzuru , Tennant Allyn F. , Thomas Nicholas E. , Tombesi Francesco , Trois Alessio , Tsygankov Sergey S. , Turolla Roberto , Vink Jacco , Wu Kinwah , Zane Silvia
Published: March 2024

We report the discovery of X-ray polarization from the X-ray-bright filament G0.13−0.11 in the Galactic center (GC) region. This filament features a bright, hard X-ray source that is most plausibly a pulsar wind nebula (PWN) and an extended and structured diffuse component. Combining the polarization signal from IXPE with the imaging/spectroscopic data from Chandra, we find that X-ray emission of G0.13−0.11 is highly polarized PD = 57(±18)% in the 3−6 keV band, while the polarization angle is PA = 21 ° ( ± 9 ° ). This high degree of polarization proves the synchrotron origin of the X-ray emission from G0.13−0.11. In turn, the measured polarization angle implies that the X-ray emission is polarized approximately perpendicular to a sequence of nonthermal radio filaments that may be part of the GC Radio Arc. The magnetic field on the order of 100 μG appears to be preferentially ordered along the filaments. The above field strength is the fiducial value that makes our model self-consistent, while the other conclusions are largely model independent.
A novel image-correction method for cloud-affected observations with Imaging Atmospheric Cherenkov Telescopes
Authors: Żywucka Natalia , Sitarek Julian , Sobczyńska Dorota , Pecimotika Mario , Hrupec Dario , Prester Dijana Dominis , Pavletić Lovro , Mićanović Saša
Published: March 2024

Context.The presence of clouds during observations with Imaging Atmospheric Cherenkov Telescopes can strongly affect the performance of the instrument due to additional absorption of light and scattering of light beyond the field of view of the instrument. If not corrected for, the presence of clouds leads to increased systematic errors in the results.

Aims.One approach to correct for the effects of clouds is to include clouds in Monte Carlo simulations to produce models for primary particle classification, and energy and direction estimation. However, this method is challenging due to the dynamic nature of cloudy conditions and requires extensive computational resources. The second approach focuses on correcting the data themselves for cloud effects, which allows the use of standard simulations. However, existing corrections often prioritise the limitation of systematic errors without optimising overall performance. By correcting the data already at the image level, it is possible to improve event reconstruction without the need for specialised simulations.

Methods.We introduce a novel analysis method based on a geometrical model that can correct the data already at the image level given a vertical transmission profile of a cloud. Using Monte Carlo simulations of an array of four of the Large-Sized Telescopes of the Cherenkov Telescope Array, we investigated the effect of the correction on the image parameters and the performance of the system. We compared the data correction at the camera level with the use of dedicated simulations for clouds with different transmissions and heights.

Results.The proposed method efficiently corrects the extinction of light in clouds, eliminating the need for dedicated simulations. Evaluation using Monte Carlo simulations demonstrates improved gamma-ray event reconstruction and overall system performance.
Electrical energy saving analysis based on solar power collector’s thermal system
Authors: Shodiyev Bobur , Mannoboyev Shuxrat , Shukuraliyev Abrorbek , Matqosimov Muhammadsodiq , Madaminov Azimbek , Saporboyev Mirzabek , Suropov Bahadir
Published: March 2024

This article analyzed the processes of new types of solar collector water heating systems designed to form solar collector thermal energy, air movement mode, including boundary layers of air flow, based on solar energy due to the abundance of sunny days in Uzbekistan. Additional parts in the interior, pipes, structures of the heating surface, methods for calculating basic physics were indicated. Also, the issues of forming the boundary layers of air flow, determining the elongation of the boundary layers and forming the air movement of the air flow, which occur under conditions of laminar or turbulent flow, are determined by changes in the patterns of air flow movement. A mathematical and immersion model was developed based on the results obtained directly in Reynolds number (Re) in the range 1000-5000 of these thermal and hydrodynamic processes. In the research work, the concave dimensions of the air pipe, including the length of the concave step, were determined taking into account the relationship between t and the concave height h, the formation of air flow movements and the breakpoints of the boundary points. Based on this system, traditional fuel resources were saved as well as energy saving problems in the electric power system.
Research on the economic security application of energy
economy in a low-carbon sustainable development society
Authors: Li Jun , Liu Yuanpei , Shao Ruixue , Zhudro M.K.
Published: March 2024

Research on the economic security application of energy economy in a low-carbon sustainable development society is an important research field. Its purpose is to explore how to achieve the safe development of the national economy in the context of low-carbon sustainable development, including economic structural adjustment, green technology innovation, resource conservation and recycling, environmental protection, etc. This article explores how to ensure green and sustainable development of energy security and the security risk assessment of green energy economy.
Improvement of the cooling system of reactive power compensating devices used in railway power supply
Authors: Toirov Olimjon , Azimov Shohruh , Najmitdinov Zikrillo , Sharipov Muhriddin , Toirov Zuvur
Published: March 2024

This article analyzes the reactive power generation and compensation solutions in the "Uzbekistan Railways" electrical supply system operating at 25kV, 50Hz frequency. It examines the efficiency and economic analysis of the cooling system connected to the control components (thyristors) of the device compensating reactive power under various operating conditions. The study compares the conventional cooling system approach with the newly researched cooling system for the controlling components of reactive power compensation. It proposes specific systematic solutions regarding the electric locomotive's load current, environmental conditions, reliability of the cooling system, maintenance capabilities of the cooling system, and real-time monitoring and control analysis delivery to the service provider. Additionally, conclusions are drawn regarding the economic and energy efficiency.
Correlation analysis of geological factors with the coefficient of gas transfer of organizations
Authors: Khalismatov Irmukhamat , Zakirov Ravshan , Shomurodov Shahboz , Isanova Rakhima , Joraev Farrukh , Ergashev Yorqinjon
Published: March 2024

Extensive research has been conducted to analyze the impact of geological, technological, and economic factors on the gas recovery coefficient of productive formations. The objective is to assess the relative significance of these factors and establish their functional relationship by employing correlation methods.The assessment criteria for determining the influence of these factors on gas recovery are primarily based on geological considerations. Geological factors play a crucial role in the productivity of gas reservoirs, including parameters such as reservoir porosity, permeability, and saturation. Additionally, the geological characteristics of the formation, such as lithology, structural features, and stratigraphy, are taken into account.By employing correlation methods, the functional connections between these geological factors and the gas recovery coefficient can be established. Correlation analysis provides valuable insights into the interrelationships and dependencies among these factors, allowing for a better understanding of their combined impact on gas recovery.Technological factors also play a significant role in gas recovery. These factors encompass various techniques and practices employed during drilling, completion, and production operations. Advanced drilling technologies, well completion strategies, and efficient reservoir stimulation methods all contribute to optimizing gas recovery from productive formations.Furthermore, economic factors such as market conditions, gas prices, and infrastructure availability can influence the economic viability of gas recovery projects. The assessment of these economic factors is essential to ensure the profitability and sustainability of gas production operations.
Accidental Explosions, Beirut ANFO Blast, Ghana Truck Explosion, Global Terrorism Index 2021-22, and Blast Mitigation: A Review
Authors: Anas S.M. , Al-Dala’ien Rayeh Nasr , Akram Shahbaz , Alam Mehtab
Published: March 2024

Explosions are continually occurring without ceasing in many parts of the world endangering human lives and seriously affecting the health of infrastructures and facilities. Industry accidental mishaps that occurred recently, like those in Ghana (2022; 17 deaths), Russia (2021; 18 deaths), Beirut (2020; 220 deaths; $8bn economic loss), and Tientsin (2015, 173 deaths; $6.86bn economic loss), indicate the severity of the industrial devastation one could gauge that explosions may cause. Very recently, another industrial blast occurred at a rocket and explosive factory in the capital city of Turkey leading to the collapse of a nearby building and causing 5 deaths and serious injuries to over 50 civilians, is an eye-opener. This article offers a condensed examination of subjects related to explosions, including accidental detonations, the Beirut ANFO explosion, and the Ghana truck explosion. The report findings from the global terrorism index 2021-22 are analyzed and discussed. Additionally, strategies for both active and passive measures to mitigate the impact of explosions on infrastructure and facilities are emphasized. To ensure safety and durability against damage, the structure needs to possess resilience in the face of explosions. Therefore, it is crucial to analyze how the structure responds to extreme loading in order to enhance the design philosophy. Currently, there is still a lack of understanding regarding the mechanism of blast and how it affects masonry structures. Consequently, further research is required to delve deeper into this subject.
Study on modeling of contact interaction in roll modules
Authors: Khurramov Shavkat , Toshkhujaev Alisher , Saidakhmedov Najimiddin
Published: March 2024

The main problem of the mechanics of contact interaction in roll modules is to determine the stress-strain state in the technological zone. The article presents mathematical models of the laws of distribution of contact stresses and analytical dependencies of their main indices, which make it possible to calculate the power parameters of roll modules of technological machines. When developing mathematical models, empirical formulas for the laws of distribution of normal stresses along roll contact curves and a friction stress model were used, considering the effect of external forces, roll drive, and compliance of the roll coating on the distribution of shear stresses. It is shown that normal stresses in the compression zone increase from zero to the maximum value by the harmonic law, and in the recovery zone, they decrease from the maximum value to zero by the parabolic law. It was revealed that in the driven roll, the neutral point is located on the left side of the point of maximum normal stress, and the points that determine the maximum normal stress and compression of the interacting bodies coincide and are shifted from the line of centers towards the supply of the processed material into the contact zone.
Leachate migration and percolation consequences on water quality: A case study of Plateau State Nigeria
Authors: Wuave Terwase
Published: March 2024

Leachate water samples were collected from dumpsite and its adjacent area in Jos metropolis to study leachate migration and percolation consequences on water quality. Concentration of various physico-chemical parameters including heavy metal (Cd, Cr, Cu, Fe, As, V, and Zn) were determined in water and leachate samples. The moderate to high concentrations of Cl, NO3, SO4, Fe, Zn, Cd, Cr, Cu, Fe and Biochemical Oxygen Demand (BOD) in water, indicate that water quality in the area is being affected by leachate percolation. Surface water has HPI value of 94.52 with mean value of 48.32 which is of the transition stage of medium to high. HEI value computed was 20.07 with mean value of 16 for the surface water, in ground water, HEI value computed was 5.94 with mean value of 0.88. LPI at Honda village showed the lowest values of 16.5, GeroNyango and Sabon Geri Atu village highest value of 20.1 and 23.4. This suggests that leachate percolation is have an effect on water quality which indicates that water in the area is threatened. Government should consider recycling waste, composting, using waste to generate energy, reuse derived full (RDF), solid Recovered (SRF) and engineering landfill as an option.
Advanced Strengthening of Steel Structures: Investigating GFRP Reinforcement for Floor Beams with Trapezoidal Web Openings
Authors: Benzerara Mohammed , Guedaoura Hamda , Anas S.M. , Yolchiyev Mashalbek , Daminova Barno
Published: March 2024

Enhancing existing steel structures becomes imperative upon alterations in usage or geometric configurations, such as introducing web openings in floor beams to accommodate various services. The utilization of welded steel plate and conventional strengthening methods often presents challenges, which may be mitigated through the adoption of composite materials like Fiber Reinforced Polymers (FRP). However, research on the application of FRP to steel beams with web openings remains limited, predominantly focusing on beams with rectangular openings of modest dimensions. This study delves into the application of Glass Fiber Reinforced Polymers (GFRP) to strengthen reinforced steel floor beams featuring trapezoidal openings. Leveraging a rigorously validated numerical model derived from previously published findings by a contributing researcher, the investigation showcases that the proposed GFRP reinforcement scheme exhibits performance comparable to conventional steel plate welding techniques, while preserving the inherent strength of the original solid beams.
Innovative Design of an Automated, Modular Vertical Botanical Display with Integration of Architecture and Engineering
Authors: Navistki Pavel , Lucy Garrison , Craig Tanner , Kinnunen Anna , Youmans Nate , Marie Lucy Hannah , Budavich Rachel , Ranahan William , Resor Stuart
Published: March 2024

In the current dynamic educational landscape, the challenge of imparting engineering education is increasingly felt by both educators and students worldwide. Universities are striving to furnish students with the essential skills and knowledge that will seamlessly transition them into professional engineering roles, further studies, or other professional domains. This educational approach equips students with practical applications of engineering and science to enhance the physical world. It prepares graduates to join and contribute to the engineering and scientific communities, aiming to better the human condition. The Thurman Botanical Tapestry at Oral Roberts University embodies a revolutionary blend of aesthetics, research, and education in botany. Spanning an impressive 280 square feet within the Biology Department's atrium, this living wall integrates a diverse range of plants such as Monstera, Alocasia, and Philodendron, transcending mere visual appeal to serve as a vibrant research laboratory. Equipped with advanced sensors and methodologies, it offers students an invaluable hands-on experience in plant care and environmental research. This project is a testament to the seamless integration of artistic creativity with scientific innovation, fostering environmental stewardship and nurturing future scientists. Its design, process, and educational implications highlight the collaborative intersection of biology and engineering, making the Thurman Botanical Tapestry not just a remarkable centerpiece but a dynamic platform for ecological and educational exploration.
Most expedient mine surveying analysis and geodetic method for tracking the stability of the tailings dam position
Authors: Rahimova Muhlisa , Pardaboyev Anvarjon , Inogamov Ibrohim , Xudoyberdiyev Abdusamat , Shamsieva Nasiba , Tuychiyeva Ixtibar , Fathiddinova Mehriniso , Yakubov Tohir , Mirjalolov Nuriddin
Published: March 2024

This article examines the issues of mine surveying and geodetic observations of the stability of the position of the tailings dam of the Almalyk Mining and Metallurgical Combine (AMMC) in Uzbekistan. For these purposes, a geodetic network was created on the principle of geodetic serifs, including the course of polygonometry of the 1st category. To determine the stability of the position and condition of the dam of the combined tailing dump in order to improve the accuracy, observations were made using satellite technologies and classical methods. From the work performed, it was concluded that when determining the coordinates of points, it is convenient to use the method of geodetic serifs. It allows simultaneous measurements of both the main course and lateral points, which significantly reduces time for making field measurements. In addition, in the case of short sides of triangles, the method of linear serifs is most appropriate, since it allows you to obtain more accurate values of the angles of triangles in comparison with angular measurements, which in the end result significantly increases the accuracy of determining the coordinates of points.
Anthropogenic transformation of oasis landscapes in Khorezm Province, Uzbekistan: A geoecological analysis
Authors: Khaitbaev Abror , Yarashev Kuvondik , Karimov Yunus , Nazarov Maqsud
Published: March 2024

This geoecological analysis of Khorezm Province, Uzbekistan, unveils the intricate dynamics of anthropogenic transformations in oasis landscapes. Examining land cover changes, socio-economic influences, hydrological challenges, and biodiversity decline, the study provides comprehensive insights for sustainable development. Urban expansion, driven by factors like population growth and economic development, necessitates strategic urbanization policies, incorporating green infrastructure and mixed-use zoning. Adaptive water management is imperative to address escalating groundwater depletion and declining surface water quality, emphasizing improved irrigation practices and technological integration. Biodiversity conservation initiatives, especially in critical habitats like riparian zones and wetlands, are vital to counteract ecological decline. Predictive modeling facilitates informed decision-making, allowing stakeholders to anticipate and proactively address future landscape changes. Interdisciplinary collaboration is paramount, weaving together perspectives from ecology, hydrology, sociology, and economics to navigate the delicate balance between development and conservation. These findings position Khorezm Province as a potential model for sustainable development, providing valuable insights applicable to regions facing analogous challenges.
Features of the method for producing cross-knitted knitwear with a discontinuous linear melange effect
Authors: Sherqulov Umar , Rakhimov Farhad , Mamatova Nodira , Abbazov Ilkhom
Published: March 2024

The textile industry occupies one of the most important places in the production of socially significant products and meeting the needs of the economy and population. In recent years, issues of effective use of existing technological capacities and the use of diverse raw materials have been on the agenda. The article reveals the features of the method for producing cross-knitted knitwear with a discontinuously linear melange effect from dissimilar or multi-colored threads or yarn.
Species and population distribution of plant aphids in agrobiocenose of southeast regions of Uzbekistan
Authors: Rustamov Adkham , Kimsanbaev Khojimurod
Published: March 2024

In the years 2022 and 2023, comprehensive investigations and experiments were conducted in the Sardoba district of the Syrdarya region. These efforts aimed to address the threat posed by plant aphids to cotton, vegetable, and rice crops. In 2022, scientific interventions were carried out across a total area of 130 hectares, followed by an expansion to 180 hectares in 2023. The scientific endeavors were centered on identifying and systematically analyzing the types of pests prevalent in the vegetable agrobiocenosis of the Syrdarya region. The research findings revealed the widespread presence of various pests, including moths, white butterflies, spider mites, and plant aphids. Among these, special attention was directed towards studying members of the Aphididae family within the Homoptera order. Moreover, the investigation extended to identifying their natural predators, known as entomophagous species. Specifically, entomophagous species such as Coccinella septempunctata, Chrysopa carnea, and Lysiphlebus fabarum were identified as playing significant roles in regulating the population of plant aphids and maintaining ecological balance. These genera act as natural enemies of aphids, helping to control their numbers and prevent widespread infestations that could damage agricultural crops. This holistic approach not only mitigates the negative impacts of pest outbreaks but also fosters biodiversity and ecosystem resilience. The findings of these investigations provide valuable insights into the ecological dynamics of agricultural ecosystems in the Syrdarya region, Uzbekistan and contribute to the development of integrated pest management practices.
Acceptable planting periods and fertilizing methods of sesame (Sesamum L.) in the western province of Zarafshan oasis, Uzbekistan
Authors: Diyarov Golibjon , Rizaev Shukhrat , Sanayev Sobir , Kholmurzaev Bobur
Published: March 2024

In the scientific article, in the conditions of the typical gray soils of the Samarkand province, located in the western province of the Zarafshan oasis, when sesame (Sesamum L.) is planted in the optimal period of May 5-10, and when mineral fertilizers are used in the maintenance at the rate of NPK 120:90:60 kg/ha, the fertility is 96.1-97.1 %, the number of seedlings at the end of the period of operation is 211,100/ha and the average grain yield is 15.6-12.5 tons/ha. Sowing sesame in this period (05-10.05) is 4.1-3.9 tons/ha compared to the early period (April 25-30) and 1.4-1.6 tons/ha compared to the late period (15-20.05), the use of mineral fertilizers at the rate of NPK 120:90:60 kg/ha compared to NPK 150:105:75 kg/ha is 0.3-0.8 tons/ha. It is stated in the article that it provides additional grain yield in the amount of 7 tons/ha.
Raphanus sativus L. and its determination of planting dates based on seed germination in different ecological environments of Uzbekistan
Authors: Khusanov Navruzbek , Boboyev Sayfulla , Razzakova Shakhlo , Shoira Norkobilova , Juliyev Muhiddin , Turabayev Akmal
Published: March 2024

In this article, the main research conducted on the Raphanus sativus plant, in particular, which countries and scientific organizations of the world are the leaders for learning about this plant, based on the results obtained, the information on the publication of articles in various journals in the Scopus database is analyzed. According to the analysis, China and the United States are the leaders in conducting research with the Raphanus sativus L. and the University of Western Australia conducts the most research among scientific organizations. There are more than 520 articles based on Raphanus sativus L. plant research in various journals in Scopus, and among them, Agricultural and Biological Sciences journal is the leader in the number of articles, among the researchers, Li. Y has the highest result in publishing many articles is shown to record. Also, temperature dependence of daikon seed germination was studied in field and laboratory conditions, and according to the results of the study, 20-30 0C is the most favorable temperature for germination, daikon plant can be grown in 4 ecological zones of Uzbekistan. It has been shown that the average daily temperature for seed germination should not be higher than 30 0C when planted as a second crop in the summer season.
Composite papers based on natural polymers
Authors: Egamberdiev Elmurod , Khaydullaev Khurshid , Abdurazakova Sevinch , Khoshimov Qodirjon , Muratkulov Olimjon , Tilovov Khusan , Rakhimjonov Bekmurod , Alieva Muqaddas
Published: March 2024

In this study, cellulose was extracted from Heliánthus tuberósus (Jerusalem artichoke) stems, and its quality indicators were thoroughly investigated. The isolation process involved the removal of impurities and non-cellulosic components, resulting in a purified cellulose sample suitable for further analysis and application.To explore the potential of Heliánthus tuberósus cellulose, composite paper was produced by incorporating basalt fiber into the cellulose matrix. The resulting paper was subjected to comprehensive testing to evaluate its mechanical properties, with a particular focus on tensile strength and tensile length.The tensile strength of the composite paper was determined using standardized testing methods, providing quantitative data on the material's ability to withstand applied forces without breaking or deforming. Tensile length, on the other hand, refers to the maximum elongation the paper can undergo before rupture occurs. These properties were assessed to gauge the overall performance and suitability of the composite paper for various applications.The obtained results were presented in a clear and concise manner, utilizing tables and graphs to facilitate data interpretation and comparison. Tables allowed for the tabulation of the measured tensile strength and tensile length values, providing a comprehensive overview of the material's mechanical characteristics. Graphs were employed to visualize trends, patterns, and potential correlations between different variables, aiding in a deeper understanding of the composite paper's behavior under various loading conditions.