bluuebunny/crossref_metadata_2025 huggingface dataset:
Genomic epidemiology of SARS-CoV-2 from Uttar Pradesh, India
Authors: Misra Gauri , Manzoor Ashrat , Chopra Meenu , Upadhyay Archana , Katiyar Amit , Bhushan Brij , Anvikar Anup
Published: September 2023

The various strains and mutations of SARS-CoV-2 have been tracked using several forms of genomic classification systems. The present study reports high-throughput sequencing and analysis of 99 SARS-CoV-2 specimens from Western Uttar Pradesh using sequences obtained from the GISAID database, followed by phylogeny and clade classification. Phylogenetic analysis revealed that Omicron lineages BA-2-like (55.55%) followed by Delta lineage-B.1.617.2 (45.5%) were predominantly circulating in this area Signature substitution at positions S: N501Y, S: D614G, S: T478K, S: K417N, S: E484A, S: P681H, and S: S477N were commonly detected in the Omicron variant-BA-2-like, however S: D614G, S: L452R, S: P681R and S: D950N were confined to Delta variant-B.1.617.2. We have also identified three escape variants in the S gene at codon position 19 (T19I/R), 484 (E484A/Q), and 681 (P681R/H) during the fourth and fifth waves in India. Based on the phylogenetic diversification studies and similar changes in other lineages, our analysis revealed indications of convergent evolution as the virus adjusts to the shifting immunological profile of its human host. To the best of our knowledge, this study is an approach to comprehensively map the circulating SARS-CoV-2 strains from Western Uttar Pradesh using an integrated approach of whole genome sequencing and phylogenetic analysis. These findings will be extremely valuable in developing a structured approach toward pandemic preparedness and evidence-based intervention plans in the future.
Majority rule can help solve difficult tasks even when confident members opt out to serve individual interests
Authors: Kuroda Kiri , Takahashi Mayu , Kameda Tatsuya
Published: September 2023

When sharing a common goal, confident and competent members are often motivated to contribute to the group, boosting its decision performance. However, it is unclear whether this process remains effective when members can opt in or out of group decisions and prioritize individual interests. Our laboratory experiment (n = 63) and cognitive modeling showed that at the individual level, confidence, competence, and a preference for risk motivated participants’ opt-out decisions. We then analyzed the group-level accuracy of majority decisions by creating many virtual groups of 25 members resampled from the 63 participants in the experiment. Whereas the majority decisions by voters who preferred to participate in group decision making were inferior to individual decisions by loners who opted out in an easy task, this was reversed in a difficult task. Bootstrap-simulation analyses decomposed these outcomes into the effects of a decrease in group size and a decrease in voters’ accuracy accruing from the opt-in/out mechanism, demonstrating how these effects interacted with task difficulty. Our results suggest that the majority rule still works to tackle challenging problems even when individual interests are emphasized over collective performance, playing a functional as well as a democratic role in consensus decision making under uncertainty.
The SGLT2 inhibitor canagliflozin suppresses growth and enhances prostate cancer response to radiotherapy
Authors: Ali Amr , Mekhaeil Bassem , Biziotis Olga-Demetra , Tsakiridis Evangelia E. , Ahmadi Elham , Wu Jianhan , Wang Simon , Singh Kanwaldeep , Menjolian Gabe , Farrell Thomas , Mesci Aruz , Liu Stanley , Berg Tobias , Bramson Jonathan L. , Steinberg Gregory R. , Tsakiridis Theodoros
Published: September 2023

Radiotherapy is a non-invasive standard treatment for prostate cancer (PC). However, PC develops radio-resistance, highlighting a need for agents to improve radiotherapy response. Canagliflozin, an inhibitor of sodium-glucose co-transporter-2, is approved for use in diabetes and heart failure, but is also shown to inhibit PC growth. However, whether canagliflozin can improve radiotherapy response in PC remains unknown. Here, we show that well-tolerated doses of canagliflozin suppress proliferation and survival of androgen-sensitive and insensitive human PC cells and tumors and sensitize them to radiotherapy. Canagliflozin blocks mitochondrial respiration, promotes AMPK activity, inhibits the MAPK and mTOR-p70S6k/4EBP1 pathways, activates cell cycle checkpoints, and inhibits proliferation in part through HIF-1α suppression. Canagliflozin mediates transcriptional reprogramming of several metabolic and survival pathways known to be regulated by ETS and E2F family transcription factors. Genes downregulated by canagliflozin are associated with poor PC prognosis. This study lays the groundwork for clinical investigation of canagliflozin in PC prevention and treatment in combination with radiotherapy.
Simplifying glycan monitoring of complex antigens such as the SARS-CoV-2 spike to accelerate vaccine development
Authors: Sauvageau Janelle , Koyuturk Izel , St. Michael Frank , Brochu Denis , Goneau Marie-France , Schoenhofen Ian , Perret Sylvie , Star Alexandra , Robotham Anna , Haqqani Arsalan , Kelly John , Gilbert Michel , Durocher Yves
Published: September 2023

Glycosylation is a key quality attribute that must be closely monitored for protein therapeutics. Established assays such as HILIC-Fld of released glycans and LC-MS of glycopeptides work well for glycoproteins with a few glycosylation sites but are less amenable for those with multiple glycosylation sites, resulting in complex datasets that are time consuming to generate and difficult to analyze. As part of efforts to improve preparedness for future pandemics, researchers are currently assessing where time can be saved in the vaccine development and production process. In this context, we evaluated if neutral and acidic monosaccharides analysis via HPAEC-PAD could be used as a rapid and robust alternative to LC-MS and HILIC-Fld for monitoring glycosylation between protein production batches. Using glycoengineered spike proteins we show that the HPAEC-PAD monosaccharide assays could quickly and reproducibly detect both major and minor glycosylation differences between batches. Moreover, the monosaccharide results aligned well with those obtained by HILIC-Fld and LC-MS.
In-gap band formation in a periodically driven charge density wave insulator
Authors: Osterkorn Alexander , Meyer Constantin , Manmana Salvatore R.
Published: September 2023

Modern time-resolved spectroscopy experiments on quantum materials raise the question, how strong electron-electron interactions, in combination with periodic driving, form unconventional transient states. Here we show using numerically exact methods that in a driven strongly interacting charge-density-wave insulator a band-like resonance in the gap region is formed. We associate this feature to the so-called Villain mode in quantum-magnetic materials, which originates in moving domain walls induced by the interaction. We do not obtain the in-gap band when driving a non-interacting charge density wave model. In contrast, it appears in the interacting system also in equilibrium at intermediate temperatures and in the short-time evolution of the system after a quantum quench to the lowest-order high-frequency effective Floquet Hamiltonian. Our findings connect the phenomenology of a periodically driven strongly correlated system and its quench dynamics to the finite-temperature dynamical response of quantum-magnetic materials and will be insightful for future investigations of strongly correlated materials in pump-probe setups.
Universal structural patterns in sparse recurrent neural networks
Authors: Zhang Xin-Jie , Moore Jack Murdoch , Yan Gang , Li Xiang
Published: September 2023

Sparse neural networks can achieve performance comparable to fully connected networks but need less energy and memory, showing great promise for deploying artificial intelligence in resource-limited devices. While significant progress has been made in recent years in developing approaches to sparsify neural networks, artificial neural networks are notorious as black boxes, and it remains an open question whether well-performing neural networks have common structural features. Here, we analyze the evolution of recurrent neural networks (RNNs) trained by different sparsification strategies and for different tasks, and explore the topological regularities of these sparsified networks. We find that the optimized sparse topologies share a universal pattern of signed motifs, RNNs evolve towards structurally balanced configurations during sparsification, and structural balance can improve the performance of sparse RNNs in a variety of tasks. Such structural balance patterns also emerge in other state-of-the-art models, including neural ordinary differential equation networks and continuous-time RNNs. Taken together, our findings not only reveal universal structural features accompanying optimized network sparsification but also offer an avenue for optimal architecture searching.
Slow growing bacteria survive bacteriophage in isolation
Authors: Attrill Erin L , Łapińska Urszula , Westra Edze R , Harding Sarah V , Pagliara Stefano
Published: September 2023

The interactions between bacteria and bacteriophage have important roles in the global ecosystem; in turn changes in environmental parameters affect the interactions between bacteria and phage. However, there is a lack of knowledge on whether clonal bacterial populations harbour different phenotypes that respond to phage in distinct ways and whether the abundance of such phenotypes within bacterial populations is affected by variations in environmental parameters. Here we study the impact of variations in nutrient availability, bacterial growth rate and phage abundance on the interactions between the phage T4 and individual Escherichia coli cells confined in spatial refuges. Surprisingly, we found that fast growing bacteria survive together with all of their clonal kin cells, whereas slow growing bacteria survive in isolation. We also discovered that the number of bacteria that survive in isolation decreases at increasing phage doses possibly due to lysis inhibition in the presence of secondary adsorptions. We further show that these changes in the phenotypic composition of the E. coli population have important consequences on the bacterial and phage population dynamics and should therefore be considered when investigating bacteria-phage interactions in ecological, health or food production settings in structured environments.
Epoxy-Silica Hybrid Networks
Authors: Špírková Milena , Matéjka Libor , Dušek Karel
Published: September 2023

The hybrid organic-inorganic polymer systems (epoxy-silica network) were prepared by one- and/or two-stage process. The dependence of the dynamic mechanical and ultimate mechanical properties on the content of the inorganic material, and on the method of preparation, were determined.
Time-, space- and energy-resolved in situ characterization of catalysts by X-ray absorption spectroscopy
Authors: Peters Stefan , Kunkel Benny , Cakir Cafer Tufan , Kabelitz Anke , Witte Steffen , Bernstein Thomas , Bartling Stephan , Radtke Martin , Emmerling Franziska , Abdel-Mageed Ali Mohamed , Wohlrab Sebastian , Guilherme Buzanich Ana
Published: September 2023

A novel setup for dispersive X-ray absorption spectroscopy (XAS) with simultaneous resolution of space, time and energy for in situ characterization of solid materials is demonstrated.
Structural and chemical properties of NiOx thin films: the role of oxygen vacancies in NiOOH formation in a H2O atmosphere
Authors: Blume A. Raoul , Calvet Wolfram , Ghafari Aliakbar , Mayer Thomas , Knop-Gericke Axel , Schlögl Robert
Published: September 2023

Formation of Ni-(oxy)-hydroxides on NiOx thin films in H2O vapor is studied by combined in situ XPS/XAS, SEM and DFT. Formation is mediated by structural defects and oxygen vacancies at high temperatures instigating H2O dissociation and metastable OH chemisorption.
Two-dimensional Janus pentagonal MSeTe (M = Ni, Pd, Pt): promising water-splitting photocatalysts and optoelectronic materials
Authors: Yuan Yu-Xun , Pan Lu , Wang Zhao-Qi , Zeng Zhao-Yi , Geng Hua-Yun , Chen Xiang-Rong
Published: September 2023

Janus pentagonal TMD MSeTe (M = Ni, Pd, Pt) possess high visible light absorption and applicability in various environments (pH = 0–13) with high STH efficiencies.
Effects of square spatial periodic forcing on oscillatory hexagon patterns in coupled reaction–diffusion systems
Authors: Fan Weili , Ma Fengna , Tong Yuan , Liu Qian , Liu Ruoqi , He Yafeng , Liu Fucheng
Published: September 2023

Our study reports the response of oscillatory Turing patterns in coupled reaction diffusion systems to external spatial forcing. The findings provide new insight into pattern formation in layered media.
In situ scanning tunneling microscopy studies of carbonate-induced restructuring of Ag-decorated Cu(100) electrodes
Authors: Amirbeigiarab Reihaneh , Magnussen Olaf M.
Published: September 2023

AgCu bimetallic model catalysts were prepared by electrodeposition of Ag submonolayers on Cu(100) in sulphuric acid and studied by in situ STM. Electrolyte exchange to bicarbonate solution results in a carbonate-induced Ag island restructuring.
Interatomic Coulombic decay in small helium clusters
Authors: Kazandjian Sévan , Kircher Max , Kastirke Gregor , Williams Joshua B. , Schöffler Markus , Kunitski Maksim , Dörner Reinhard , Miteva Tsveta , Engin Selma , Trinter Florian , Jahnke Till , Sisourat Nicolas
Published: September 2023

We experimentally and theoretically investigate interatomic Coulombic decay in small helium clusters. The electronic and nuclear dynamics for these systems are studied in detail using the energy distributions of the ionic fragments.
Molecular torsion controls the excited state relaxation pathways of multibranched tetraphenylpyrazines: effect of substitution of morpholine vs. phenoxazine
Authors: Pananilath Hasim Fayiz , Govind Chinju , Thadathilanickal Tessy D. , Karunakaran Venugopal
Published: September 2023

The polarity dependent torsional motion plays a significant role in the excited state relaxation pathways of multibranched donor–acceptor derivatives.
Controlling the sensitivity and selectivity for the detection of nitro-based explosives by modulating the electronic substituents on the ligand of AIPE-active cyclometalated iridium(iii) complexes
Authors: Agarwal Annu , Bhatta Ram Prasad , Kachwal Vishal , Laskar Inamur Rahaman
Published: September 2023

AIE active cyclometalated complexes of iridium(iii) exhibiting high quantum yield showed selective and sensitive detection of TNT and TNP explosives through rationally choosing the appropriate electronic substituents on the cyclometalated ligand.
Insight into lanthanides REVO4 (RE = Ce, Pr, Nd): a comparative study on RE-site variants in the electrochemical detection of metronidazole in environmental samples
Authors: Radha Aravind , Wang Sea-Fue
Published: September 2023

In this work, the structural parameters of three sustainable REVO4 electrocatalysts, with variation in RE site with RE = Ce, Pr, Nd for the electrochemical monitoring of metronidazole in environmental samples.
Effect of nano-encapsulated food flavorings on streptozotocin-induced diabetic rats
Authors: Mohammed Dina Mostafa , Abdelgawad Mohamed A. , Ghoneim Mohammed M. , El-Sherbiny Mohamed , Mahdi Wael A. , Alshehri Sultan , Ebrahim Hasnaa A. , Farouk Amr
Published: September 2023

The food flavorings and their nanocapsules seem to have the potential double effect of a flavor compound as a food palatability enhancer with a potential beneficial effect on type 2 diabetes mellitus without any health drawbacks.
Thienyltriazine-based porous organic polymers with nitrogen rich moieties: synthesis and gas selectivity study
Authors: Kumar Neha Rani , Das Prasenjit , Agrawal Abhijeet R. , Mandal Sanjay Kumar , Zade Sanjio S.
Published: September 2023

A series of thienyltriazine-based porous polymers have been synthesized and explored for CO2 adsorption with the uptake reaching as high as 16.5 wt% at 263 K and 100 kPa and a selectivity of around 65 for the CO2 : N2 mixture (15 : 85).
Response surface methodology: a powerful tool for optimizing the synthesis of metal sulfide nanoparticles for dye degradation
Authors: Sandhu Zeshan Ali , Raza Muhammad Asam , Farwa Umme , Nasr Samia , Yahia Ibrahim Sayed , Fatima Seerat , Munawar Mehmuna , Hadayet Yousra , Ashraf Sufyan , Ashraf Haseeb
Published: September 2023

Metal sulfide nanoparticles (MSNs) have attracted significant attention due to their unique optical, electronic, and catalytic properties.
Direct synthesis of haloaromatics from nitroarenes via a sequential one-pot Mo-catalyzed reduction/Sandmeyer reaction
Authors: Hernández-Ruiz Raquel , Gómez-Gil Sara , Pedrosa María R. , Suárez-Pantiga Samuel , Sanz Roberto
Published: September 2023

The one-pot synthesis of haloaromatics from nitroarenes has been accomplished by merging a dioxomolybdenum-catalyzed reduction using pinacol with the Sandmeyer reaction.
Phosphine-catalyzed ring-opening reaction of cyclopropenones with dicarbonyl compounds
Authors: Liang Chen , Chen Zhibin , Hu Xinyue , Yu Shengxia , Wang Zhenlian , Cheng Jiang
Published: September 2023

We developed a phosphine-catalyzed ring-opening reaction of cyclopropenones with dicarbonyl compounds as C-nucleophiles, leading to 1,3,3′-tricarbonyl compounds.
Copper-exchanged SUZ-4 zeolite catalysts for selective catalytic reduction of NOx
Authors: Bai Yang , Hao Dapeng , Wei Yingzhen , Han Jinfeng , Li Dan , Chen Mengyang , Yu Jihong
Published: September 2023

The copper-exchanged SUZ-4 zeolite with optimal compositions exhibits comparable catalytic properties to commercial Cu-SSZ-13 for the selective catalytic reduction reaction.
Heterogeneous catalytic oxidation of glycerol over a UiO-66-derived ZrO2@C supported Au catalyst at room temperature
Authors: Ke Yi-Hu , Zhu Chun-Mei , Xu Huan-Huan , Wang Xue , Liu Hai , Yuan Hong
Published: September 2023

The ZrO2@C support was prepared by the pyrolysis of UiO-66 precursor, and then Au NPs were evenly dispersed on the ZrO2@C by colloidal deposition method. And this catalyst exhibited the best catalytic performance in the catalytic conversion of glycerol into glyceric acid at room temperature.
Selectfluor-mediated tandem cyclization of enaminones with diselenides toward the synthesis of 3-selenylated chromones
Authors: Xia Ji-Hong , Chen Qian , Yuan Jin-Wei , Shi Wei-Shuo , Yang Liang-Ru , Xiao Yong-Mei
Published: September 2023

A practical and efficient synthetic method has been developed for the construction of 3-selenylated chromones through the tandem cyclization of enaminones with diselenides in the presence of Selectfluor.
A review of lipase immobilization on hydrophobic supports incorporating systematic mapping principles
Authors: Guimarães José Renato , Oliveira Kaíque Souza Gonçalves Cordeiro , Gonçalves Maria Carolina Pereira , Romanelli João Paulo , Lopes Laiane Antunes , Berenguer-Murcia Ángel , Fernandez-Lafuente Roberto , Tardioli Paulo Waldir
Published: September 2023

A review of the literature covering research on the immobilization of lipases on hydrophobic supports was performed using systematic mapping (SM) concepts.
Masked cerulenin enables a dual-site selective protein crosslink
Authors: Jiang Ziran , Chen Aochiu , Chen Jeffrey , Sekhon Arman , Louie Gordon V. , Noel Joseph P. , La Clair James J. , Burkart Michael D.
Published: September 2023

Translation of the natural product cerulenin into probe for fluorescent labeling and masked crosslinker to evaluate protein–protein interactivity.
Deaminative ring contraction for the synthesis of polycyclic heteroaromatics: a concise total synthesis of toddaquinoline
Authors: Kirkeby Emily K. , Schwartz Zachary T. , Lovasz Myles A. , Roberts Andrew G.
Published: September 2023

A concise strategy to prepare polycyclic heteroaromatics involving a deaminative contraction cascade is detailed.
Epitaxy growth of MAPbBrxCl3−x single-crystalline perovskite films toward spectral selective detection in both broadband and narrowband ranges
Authors: Pan Yuzhu , Wang Xin , Xu Yubing , Chai Shunjie , Wu Jie , Zhao Zhiwei , Li Qing , Wu Jun , Chen Jing , Zhu Zhuoya , Bae Byung Seong , Fayemi Omolola Esther , Zhou Jianming , Zhu Ying , Lei Wei
Published: September 2023

Single-crystalline perovskite films with continuous variable bandgaps were grown by liquid phase epitaxy. The planar-type photodetectors present two kind detection mode of broadband and narrowband by manipulating the light incident direction.
The association of air quality and complex atmospheric oxidation chemistry in the dispersion and deposition of SARS-CoV-2-laden aerosols
Authors: Lakshmanan Sandhiya , Aggarwal Ranjana , Senthilkumar Kittusamy , Upadhayay Anupama
Published: September 2023

This dispersion of infectious aerosols is moderated largely by air pollution. The possible role of O3 on the dispersion of SARS-CoV-2 aerosols is emphasized.
Design and analysis of a SnS2/WS2/V2O5 double-heterojunction toward high-performance photovoltaics
Authors: Al Mahmud Jubair , Rahman Md. Ferdous , Kuddus Abdul , Ali Md. Hasan , Islam A. T. M. Saiful , Haque Md. Dulal , Ahmed Sheikh Rashel Al , Mushtaq Muhammad , Ismail Abu Bakar Md.
Published: September 2023

Tungsten disulfide (WS2) transition metal dichalcogenide (TMDC) absorber-based solar cells comprising tin disulfide (SnS2) buffer and vanadium oxide V2O5, BSF layers have been designed and analyzed using a SCAPS-1D simulator in this study.
Deep‐sea image stitching: Using multi‐channel fusion and improved AKAZE
Authors: Yuan Ping , Fan Chunling , Zhang Chuntang
Published: September 2023

Deep‐sea image is of great significance for exploring seabed resources. However, the information of a single image is limited. Besides, deep‐sea image with low contrast and colour distortion further restricts useful feature extraction. To address the issues above, this paper presents a multi‐channel fusion and accelerated‐KAZE (AKAZE) feature detection algorithm for deep‐sea image stitching. First, the authors restore deep‐sea image in LAB colour space and RGB colour space, respectively; in LAB space, the authors use homomorphic filtering in L colour channel, and in RGB space, the authors adopt multi‐scale Retinex with chromaticity preservation algorithm to adjust the colour information. Then, the authors blend two pre‐processed images with dark channel prior weighted coefficient. After that, the authors detect feature points with the AKAZE algorithm and obtain feature descriptors with Boosted Efficient Binary Local Image Descriptor. Finally, the authors match the feature points and warp deep‐sea images to obtain the stitched image. Experimental results demonstrate that the authors’ method generates high‐quality stitched image with minimized seam. Compared with state‐of‐the‐art algorithms, the proposed method has better quantitative evaluation, visual stitching results, and robustness.
Activity‐based model based on multi‐day cellular data: Considering the lack of personal attributes and activity type
Authors: Guo Yudong , Yang Fei , Yan Haomin , Xie Siyuan , Liu Haode , Dai Zhuang
Published: September 2023

Cellular data is a sequence of base station‐interaction data that records user ID, timestamp, location area code (LAC), and cell identity (CID). With long observation periods, the data allows traffic planners to analyze coarse‐granularity user travel behaviours at low costs. However, utilizing cellular data for urban planning is not an easy task as the data lacks user socioeconomic attributes due to privacy issues. The data is also challenging to recognize user activity types. This paper proposed an activity‐based model (ABM) with skeleton schedule constraints for multi‐day cellular data. The model first infers the activity pattern and home location. Then it predicts start time, duration, and locations separately for primary and secondary activities. Next, the model infers the travel mode and path considering user multi‐day travel behaviour, path non‐linear coefficient, and transfers. Finally, a time adjustment module is proposed to avoid time conflicts in consecutive activities. The proposed activity‐based model is validated at activity, travel, and path levels. Results show that the proposed model can effectively predict activities and has much higher stability than existing ABMs based on travel surveys.
Enhanced asymmetrical modulation for half‐bridge series resonant inverters in induction heating applications
Authors: Esteve Vicente , Jordán José , Dede Enrique J. , Bellido Juan L.
Published: September 2023

This paper presents a method that improves the reliability of half‐bridge (HB) series resonant inverters (SRI) for high‐frequency induction heating applications. Many industrial processes, like induction heat treatments, are very repetitive. This cyclical operation represents a strong limitation of the inverter's reliability, mainly due to the accelerated stress of the power semiconductors. This method consists in an enhanced asymmetrical pulse width modulation (EAPWM) that allows distributing the losses across the components, thereby reducing the cyclic increase in junction temperature of the power devices, and thus achieves a reliability that is more than twice as high as that achieved using traditional modulation methods. The work methodology includes a theoretical study of the HB inverter and a complete analysis of losses. The presented design rules have been used to implement a 25 kW, 100 kHz inverter. The use of silicon carbide (SiC) MOSFET transistors allows reaching an efficiency greater than 99%. The analytical results obtained have been experimentally validated by testing the inverter on an induction heating test bench.
Features of crop formation and productivity of legume-festulolium grass mixtures in the Central region of the Non-Chernozem zone of Russia
Authors: Isakov A.N. , Lukashov V.N. , Vasilyeva V.A. , Leonova Yu.V. , Rakhimova O.V.
Published: September 2023

The article presents the results of four years of research in a field experiment conducted on medium-loamy gray forest soil of the Kaluga region. The soil of the experiment was characterized by: humus content - 2.7%, pH – 5.9, gross nitrogen content - 0.12%, mobile phosphorus content - 135, exchangeable potassium - 100 mg/kg of soil. Objects of research: festulolium of the Fest and Allegro varieties, skip-row sown and in mixtures with legumes grasses - meadow clover of the Delets and Orlovsky varieties, alfalfa variable Sarga variety and Eastern galega Gale variety. Legumes-festulolium grass mixtures on average for three years formed the green mass and dry matter yield in the range of 34.5-43.5; 34,8-43,9 and 7,2-9,3; 7,2-9,4 t/ha, respectively, with skip-row and mixed sowing methods. The maximum productivity was obtained in a grass mixture of alfalfa of the hybrid Sarga variety with festulolium of the Allegro variety. The yield of exchange energy in legume-festulolium grass mixtures was in the range of 66.8-90.4 and 68.1-91.3 GJ/ha, respectively, with skip-row and mixed crops. The largest collection was provided by alfalfa-festulolium mixtures. Alfalfa grass mixtures of the Sarga variety with festulolium of the Fest and Allegro varieties provided the collection of crude protein 17.1-17.3 and 16.7-17.2 c/ha, respectively, with skip-row and mixed sowing methods. The collection of crude protein in clover- and galega-festulolium grass mixtures did not exceed 11.7 and 12.0 c/ha. The total energy costs and the energy efficiency coefficient according to the experimental variants were 17.2-17.7 GJ/ha and 3.8-5.1 for skip-row, 17.3-17.8 GJ/ha and 3.9-5.1 for mixed crops, respectively. Grass mixtures with the participation of alfalfa of the Sarga variety and festulolium of the Fest and Allegro varieties had the highest total energy costs and the maximum energy efficiency coefficient.
Screening of different Fe(III) and Fe(II) chelate complexes in clonal micropropagation technology of highbush blueberry (Vaccinium corymbosumL.)
Authors: Nechiporenko Ivan , Akimova Svetlana , Kazakov Pavel , Nikulina Elena , Tsirulnikova Nina
Published: September 2023

The element iron plays a key role in plant physiology. For plant nutrition, chelated forms of iron are preferred. Therefore, in clonal micropropagation media, FeSO4 x 7H2O is usually introduced together with Na2EDTA. At the same time, other effective iron chelates with both carboxyl and phosphorus chelates are known. So far, there are few scientific studies on the effect of iron chelates complexes on blueberry plants underin vitroconditions. Therefore, studies were conducted with different iron chelate complexes in 4 concentrations on highbush blueberry (Vaccinium corymbosumL.) cv. Brigitta Blue in clonal micropropagation technology. The best results were obtained using Fe(III)-DTPA in increased (×1.5) and doubled (×2.0) concentrations, where the multiplication factor was 4.59-4.65.
Improved dam sealing working body for a mounted channel digger
Authors: Karimov M.S. , Usmоnov T.U. , Sharipov Z.Sh. , Usmanov N.K.
Published: September 2023

Temporary irrigation canals for supplying irrigation water to irrigation furrows are cut by plow channels. However, existing channel diggers, when cutting temporary channels, form a dam that is not compacted, which often leads to erosion of the irrigator. Therefore, partial compaction is required. An improved channel digger with a compacting working body was developed and an author’s certificate of the Republic of Uzbekistan №1895 was obtained. May 22, 1998. The working body of the improved channel digger consists of two symmetrical blades made of sheet steel in the form of developable surfaces. Also, the technological process of forming dams when cutting a temporary irrigator with an improved channel digger was studied, and the optimal operating speeds of the unit were determined when forming dams with a compactor. Experiments have shown that with an increase in the speed of movement of the unit, the width of the base of the dam increases, since at high speeds the throwing distance increases. The results are presented in table. 1.
Agronomic assessment of the herbicides application on winter wheat crops
Authors: Savoskina O.A. , Chebanenko S.I. , Zavertkin I.A. , Shitikova A.V. , Zapivalov S.A.
Published: September 2023

In modern conditions of agricultural production, it is important to obtain a high yield of good quality, which may be limited by a high degree of contamination of crops. At the same time, it is necessary to search for new approaches to the weed control problem, which involves solving a number of issues: determining and analyzing the floral composition of weeds with constant monitoring of contamination to make forecasts and make operational decisions. This work is devoted to the study of these issues. It reveals the features of winter wheat agrophytocenosis formation with the analysis of weed species composition, and shows the effectiveness of the use of herbicides recommended on the basis of mapping. The biological efficiency of the spray mixture of herbicides Verdict + Dinat was 84.1% (by the number of weeds) and 94.9% (by air-dry weight). The agronomic effectiveness of herbicides was expressed in obtaining an increase in yield of 2.67 t/ha, and the profitability level was above the threshold of economic feasibility of the weed management and amounted to 141.8%.
Antagonistic activity ofPseudomonas chlororaphisagainst some mold fungi
Authors: Akhapkina Sofia , Seleznev Alexander , Efimova Victoria , Lyakhovchenko Nikita , Solyanikova Inna
Published: September 2023

The paper presents a study of the antagonistic potential of Pseudomonas chlororaphis VKM B-3546D, isolated from the soil, against mold fungi Alternaria brassicicola VKM F-1864 and Aspergillus unguis VKM F-1754. P. chlororaphis VKM BS-1393 was used as a control culture of bacteria. It was revealed that in the presence of bacteria, the growth rate of mold fungi decreases by 10,2 mm/day. in the presence of P. chlororaphis VKM BS-1393, and by 12,9 mm/day. with P. chlororaphis VKM B-3546D, while the average increase in the colony of Alternaria is 10% and 20%, and aspergillus is 30% and 40%, respectively. It was shown that the degree of inhibition of the average colony growth in the native strain of pseudomonas is 7% higher than the contro strain for A. brassicicola VKM F-1864, and 10% for A. unguis VKM F-1754. Thus, the strain of P. chlororaphis VKM B-3546D turned out to be more effective, than P. chlororaphis VKM BS-1393.
Biological effectiveness of Pseudomonas fluorescens strains against bacterial and fungal diseases of spring rape in field conditions
Authors: Panchuk Sergey , Tareeva Marina , Fokina Ekaterina , Tesic Svjetlana
Published: September 2023

The influence of four phytopathogens Fusarium oxysporum, Botrytis cinerea, Alternaria brassicicola
, and Xanthomonas campestris on the biometric parameters of spring rape plants in field conditions was evaluated against the background of the use of the biological preparation Binoram, including live antagonistic bacteria Pseudomonas fluorescens. A significant decrease in economically important parameters of plants as a result of infection with tested phytopathogens and a positive effect on plant indicators of treatment with the biological preparation Binoram in comparison with the infected control is shown.
Questions of admixture crossing in semi-fine-wool sheep breeding in Kyrgyzstan
Authors: Azhibekov A.S. , Derkenbaev S.M. , Osmonaliev S.K. , Samykbaev A.K. , Shergaziev U.A. , Bekturov A.B.
Published: September 2023

The paper deals with the use of admixture crossing in semi-fine-wool sheep breeding in Kyrgyzstan and its results. The purpose of the research was to develop and scientifically substantiate the methods of using the North Caucasian meat and wool breed during admixture crossing for further improvement of the Tian Shan sheep breed. Generally accepted zootechnical methods were used (the classical scheme of introductory crossing), wool qualities were determined on the OFDA device – 2000. The half-blooded (1/2SKTSH) and quarter-blooded (1/4SKTSH) North Caucasian Tian Shan young animals have better wool qualities without reducing the live weight of the crossbreeds. At the same time, the crossbreeds obtained from the back crossing with wool of 58-56 quality in the specific weight of the herd reached 85.5%, and with the most desirable degree of fineness of 56 quality – 63.3%. According to wool density (M+), the proportion of mixed bred young ewes reached 33.3%, which was 25.2% more than that of half-bloods. It was revealed that the inheritance of wool density trait as a result of crossing these breeds had a positive effect on wool productivity. The crossbred wool cut from them had the best marketable appearance. All this makes it possible to switch to the breeding of quarter-blooded North Caucasian Tian Shan animals “in itself” in the future.
The concept of implementing distributed registry technology in the activities of wholesale distribution centers
Authors: Stepantsevich Marina N. , Khudyakova Elena V. , Motorin Oleg A. , Eder Alexander V. , Gorbachev M.I.
Published: September 2023

The paper considers the conceptual aspects of the application of distributed ledger technology elements (blockchain) and their derivative smart contract for the construction of automated transactions on the example of individual business tasks of large wholesale distribution centers. In the course of the study, the elements and properties of the smart contract characteristic of the subject area under study were determined, as well as the conditions, types of business operations and the corresponding data allowing them to consider the business object state with its subsequent implementation in the smart contract transaction.
Fertile grounds: econometric analysis of financial support for agricultural enterprises
Authors: Musagaliev A. , Dustova M.
Published: September 2023

This article presents an econometric analysis of the factors that influence the practice of financial support for agricultural enterprises. The study aims to identify the key determinants that affect the provision of financial assistance to agricultural businesses and provide valuable insights for policymakers, financial institutions, and agricultural stakeholders. By employing econometric techniques, the research examines a range of variables, including economic indicators, government policies, institutional factors, and agricultural characteristics, to understand their impact on financial support practices in the agricultural sector. The findings contribute to a better understanding of the dynamics of financial support and can help in formulating effective strategies to enhance access to finance for agricultural enterprises.
Effect of Injection Advance Angle on the Performance of Butanol-Diesel Dual-fuel Engines
Authors: Yang Chenxi , Cai Zheng , Wang Yibin , Fan Jinyu , Li Pinfang , Huang Jialiang
Published: September 2023

In order to further investigate the performance of the butanol-diesel dual-fuel engine, this paper uses the 4190ZLC-2 marine medium-speed diesel engine as a prototype and establishes a dual-fuel engine high-pressure cycle model using AVL-FIRE simulation software. The injection advance angle was set to 16.6°, 18.6°, 20.6° and 22.6° respectively, and its effect on the performance of the dual-fuel engine was investigated by varying the injection advance angle. The results show that as the injection advance angle increases, the incylinder pressure and temperature also increase. When the injection advance angle is 22.6°CA, compared with the original engine, CO emission is reduced by 16.8%, NO emission is increased by 7.4%, carbon smoke emission is reduced by 16.9%, and the indicated power is 52.6kW, which is increased by 1.8%.
Design of Edge Computing System for Photovoltaic Panel Hot Spot Detection Based on Machine Learning
Authors: Cai Jiecong , Guo Xutao , Chen Siyi
Published: September 2023

The hot spot effect of photovoltaic panel refers to the local heating phenomenon caused by the photovoltaic panel being covered, which not only seriously affects the power generation efficiency of photovoltaic panel, but also is one of the most important factors threatening the service life of photovoltaic panel. In this paper, an edge computing system was designed to detect hot spot effect based on real-time sensing data such as current, voltage and illuminance. The system consists of three parts: data acquisition side, data processing side and data display side. The hot spot detection algorithm model based on machine learning is deployed on the edge side, which can detect the degree of hot spot effect and locate the hot spot according to the sensor data of each photovoltaic panel in real time. Additionally, this system could push the data to the cloud management platform and each user terminal to realize remote operation and maintenance.
Prediction of Photovoltaic Power Based on SSA-BP Algorithm with Chaotic Mapping
Authors: Li Zihan
Published: September 2023

Photovoltaic (PV) power generation is of great significance to the energy reform in China. In order to better grid-connect PV, maximize the utilization of light resources, and reduce the adverse effects on the power grid due to the uncertainty and randomness of light energy, we need to study the power generation of PV. This paper discusses the factors affecting the efficiency of PV power generation and the related prediction algorithms in the light of current literature and further uses software to optimize the algorithm for PV prediction.
Preparation of High Value Added Chemicals by Layered G-C3N4 Photocatalytic Oxidation of Glucose
Authors: Li Yan , Xu Yutian , Zheng Dan
Published: September 2023

This study used cyanamide as the precursor and SiO2 as the template to prepare a layered structure g-C3N4, and characterized its crystal structure, morphology, optical performance, and electrochemical performance. Photocatalytic oxidation experiments were conducted on biomass derivatives (glucose).Orthogonal experiments were used to study the effects of factors such as illumination time, catalyst concentration, and photocurrent on photocatalytic reactions, and the reaction mechanism was explored. The product was qualitatively analyzed by gas chromatography-mass spectrometry (GC-MS) and quantitatively analyzed by High-performance liquid chromatography (HPLC). The results showed that the prepared g-C3N4 exhibited a layered structure with a band gap of 2.78 eV. When the catalyst concentration is 10mg, the photocurrent intensity is 4 A, and the illumination time is 24 hours, the glucose conversion rate is 49.09 %. The active group capture experiment shows that the main active species of g-C3N4 under visible light is ·O -. In this study, commercial P25 catalyst was used for photocatalytic oxidation of glucose under optimal conditions. The experimental results indicate that the catalytic oxidation performance of P25 for glucose is lower than that of layered structure g-C3N4.
Acoustic thermometer operating up to 11 m: uncertainty assessment and new values for Cramer coefficients around 40 kHz
Authors: Mimoune Karim , Guillory Joffray , Plimmer Mark
Published: September 2023

The present article describes an acoustic thermometer to measure the average air temperature integrated along a path ranging from 1 m to 11 m. It is based on time-of-flight measurement of ultrasound pulses at frequencies close to 40 kHz. Several methods for the detection of arrival times were investigated, notably cross-correlation and cross-spectrum. The uncertainty of the instrument itself, independent of that of the Cramer equation has been estimated at between 0.13 K to 0.09 K for distances ranging from 3 m to 11 m respectively. In practice, an experimental comparison with Pt100 probes (uncertainty of 0.1 K) has shown that the estimated uncertainty levels are relatively compatible, although the linearity of the system does not appear to be very good. To solve this problem, appropriate values for the Cramer coefficients a0 and a1 for an acoustic frequency of about 40 kHz have been determined, which contributes to improved knowledge of this equation as a function of acoustic frequency.
On Frèchet normal cone for nonsmooth mathematical programming problems with switching constraints
Authors: Jafariani Zahra , Kanzi Nader , Parizi Maryam Naderi , Upadhyay Balendu Bhooshan
Published: September 2023

This paper is devoted to the study of a class of nonsmooth programming problems with switching constraints (abbreviated as, (NMPSC)), where all the involved functions in the switching constraints are assumed to be locally Lipschitz. We investigate the properties of Frèchet normal cone of (NMPSC). In particular, we introduce two Guignard type constraint qualifications for (NMPSC) in terms of Michel-Penot subdifferential. Moreover, we derive two estimates for the Frèchet normal cone of (NMPSC) and further establish stationarity conditions at an optimal solution for (NMPSC). To the best of our knowledge, this is for the first time Frèchet normal cone for (NMPSC) have been studied in the setting of Euclidean spaces.
Introducing luminescent solar waveguides for sustainable buildings for enhanced circadian rhythm regulation
Authors: Tham Wai Qian , Chandra Subhash , Norton Brian , McCormack Sarah
Published: September 2023

As the world strives towards a low-carbon future, nearly-zero energy buildings (NZEB) have been the goal to reduce carbon emissions. Artificial lighting is estimated to consume as high as 40% of the total energy consumption in a commercial building. By utilising daylighting, which is the practice of allowing natural light into a building, energy consumption by artificial lighting can be reduced. Luminescent solar concentrators (LSCs) can act as a collector and waveguide to transport outdoor light into the building through total internal reflection. Besides, LSCs absorb a part of the solar spectrum and shift them to different wavelengths through up-conversion or down-conversion. Thus, the output spectrum can be manipulated for the desired indoor applications. Circadian rhythm is the periodic variations in behaviour that follows a 24-hour cycle, which is mainly regulated by light response. A regulated circadian rhythm is important for a healthy life, whereas a disturbed circadian rhythm can lead to health issues such as insomnia and mood disorders. There has been a consensus that our circadian rhythm strongly responds to shorter wavelength light, corroborated in studies. Thus, manipulating the output light of LSCs to contain larger proportions of light with shorter wavelengths could enhance circadian regulation. LSC devices have the potential to transport sufficient daylight up to 5m deep into the building, achieving areas beyond the reach of windows. Thus, LSCs can serve as a tool for daylighting purposes, regulating circadian rhythm and providing sufficient light for comfortable indoor visibility.
Opportunities for local fishing action groups for transformation of rural areas
Authors: Doitchinova Julia , Asenov Zhelyu
Published: September 2023

The importance of territorial governance structures in the context of neo-endogenous and locally based development is increasing for the development of rural areas in the European Union. EU policy and practice of involving stakeholders and building public-private partnerships (PPPs) are among the main tools for implementing this type of governance in rural and fishing areas. Local Action Groups (LAGs) and Fisheries Local Action Groups (FLAGs) work within the framework of Community-Led Local Development (CLLD) and ensure the participation of local residents in the planning and implementation of their Local Development Strategies (LDSs). The purpose of the report is to assess the distribution, development and problems of FLAGs and their role in the transformations and development of fishing territories. Opportunities and guidelines for their development during the current programming period should be presented on this basis. In the assessment of the development and problems of FLAGs, information from primary and secondary sources was used for the implementation of the Maritime and Fisheries Operational Programme (MFOP) and for the implementation of the Community-Led Local Development approach.
Health Promotion in Certified SPA and Balneotherapy (Medical SPA) Centres in Stara Zagora Region
Authors: Popova-Dobreva Diana
Published: September 2023

This study aims to assess the conditions for health promotion available in the region of Stara Zagora in certified SPA and Balneotherapy (Medical SPA) centers. METHODS Based on Internet sources, an analysis of the offered programs, packages and procedures, and accessibility to mineral waters. RESULTS 8 certified Balneotherapy (Medical SPA) centers and 4 SPA centers are available on the territory of the Stara Zagora region. CONCLUSIONS The presence of mineral springs, the mild climate, and investments in a very good hotel base are conditions for developing tourism and promoting health in the region words.