bluuebunny/crossref_metadata_2025 huggingface dataset:
Amplifying Sound Intensity of Key Words in Discourse Promotes Memory in Female College Students
Authors: Liu Zhenxu , He Yajie , Li Wenhao , Cui Sixing , Fu Ziying , Wang Xin
Published: December 2024

Purpose:

The aim of this study was to determine whether amplification of key words in discourse helped to memorize the words.

Method:

We tested the effect of 135 participants' memory for key words in the discourse after intensity amplification (0, 5, 7, 9, and 11 dB), and we also tested physiological indicators to measure attention levels in another 30 participants. Adobe Audition was used to modulate the intensity of key words, whereas E-prime technology was used to present speech stimuli and test the accuracy of the memory of the participants.

Results:

The results showed that amplifying key word intensity by 9 dB led to a significant enhancement in memory, whereas there was no difference in self-reported naturalness between amplification of key word intensity in the 9 dB and nonamplified groups. Heart rate and skin conductance level of the subjects decreased with amplification of key word intensity in the 9-dB group, which indicated that this promoted the memory effect by enhancing attention.

Conclusions:

Our results demonstrate that amplifying the intensity of the key words by 9 dB is an effective strategy for promoting memory. This research provides a theoretical basis for optimizing the acoustic parameters of audio learning materials to achieve better teaching effects.

Supplemental Material:

https://doi.org/10.23641/asha.27902643
Empowering talkative power technology in wireless power transfer with machine learning
Authors: Mousavi Seyed Ali , GhahramanIzadi Zahra , Khooban Mohammad Hassan
Published: December 2024

In this article, a model is proposed for talkative power (TP) implemented wireless power transfer circuit for constant power load applications that concurrently transmit power and information through a shared channel. The innovative model considers critical factors such as load variations and limited receiver knowledge regarding transmitter component values, which are vital for the seamless operation of TP technology in charging devices with varying loads that are oblivious to the parameters of the transmitter. An efficient transmitter and an optimal receiver are introduced in the framework. The transmitter's design revolves around encoding data into the phase angle between the arm bridges, chosen to optimize energy efficiency. Notably, the model employs a buck‐boost converter whose duty cycle is dynamically adjusted by the controller to accommodate changes in information or transmission phases, ensuring smooth system operation. Maximum likelihood detection methods are rendered impractical at the receiver due to the model's assumptions. To address this challenge, a neural network is implemented as a supervised learning classifier to extract information from the output voltage ripple. The simulations utilize the Speedgoat Real‐Time Target Machine in conjunction with Simulink RealTime highlighting the effectiveness of the efficient transmitter and optimal receiver demonstrating the robustness of the model.
Supernova remnant candidates discovered by the SARAO MeerKAT Galactic Plane Survey
Authors: Anderson L. D. , Camilo F. , Faerber T. , Bietenholz M. , Bordiu C. , Bufano F. , Chibueze J. O. , Cotton W. D. , Ingallinera A. , Loru S. , Rigby A. , Riggi S. , Thompson M. A. , Trigilio C. , Umana G. , Williams G. M.
Published: December 2024

Context. Sensitive radio continuum data could bring the number of known supernova remnants (SNRs) in the Galaxy more in line with what is expected. Due to confusion in the Galactic plane, however, faint SNRs can be challenging to distinguish from brighter H II regions and filamentary radio emission.

Aims. We exploited new 1.3 GHz SARAO MeerKAT Galactic Plane Survey (SMGPS) radio continuum data, which cover 251° ≤ ℓ ≤ 358° and 2° ≤ ℓ ≤ 61° at | b | ≤ 1.5°, to search for SNR candidates in the Milky Way disk.

Methods. We also used mid-infrared data from the Spitzer GLIMPSE, Spitzer MIPSGAL, and WISE surveys to help identify SNR candidates. These candidates are sources of extended radio continuum emission that lack mid-infrared counterparts, are not known as H II regions in the WISE Catalog of Galactic H II Regions, and have not been previously identified as SNRs.

Results. We locate 237 new Galactic SNR candidates in the SMGPS data. We also identify and confirm the expected radio morphology for 201 objects classified in the literature as SNRs and 130 previously identified SNR candidates. The known and candidate SNRs have similar spatial distributions and angular sizes.

Conclusions. The SMGPS data allowed us to identify a large population of SNR candidates that can be confirmed as true SNRs using radio polarization measurements or by deriving radio spectral indices. If the 237 candidates are confirmed as true SNRs, it would approximately double the number of known Galactic SNRs in the survey area, alleviating much of the discrepancy between the known and expected populations.
Photochemical and Photocatalytic Deracemization Reactions
Authors: Hashemian Seyed Parsa , Arabi Zanjani Seyed Mohammad , Afshar Moghadam Tara , Teimouri Mohammad Bagher
Published: December 2024

Under photochemical conditions and using an appropriate chiral catalyst, racemic mixtures of compounds can convert to enantioenriched mixtures through distinguished pathways which are called photochemical and photocatalytic deracemization reactions.
A convenient synthesis of CHF2O-containing pyrrolidines and related compounds — Perspective building blocks for drug discovery
Authors: Levchenko Kostiantyn , Virstiuk Ivan , Menshykova Daria , Pokhodylo Nazariy
Published: December 2024

Fluorine-containing organic molecules, including CHF2O-derivatives, are among the most sought-after in medicinal chemistry. In the current work, a mini-library of 21 compounds with a CHF2O-motif incorporated with azetidine, pyrrolidine (proline), piperidine, 2-azabicyclo[2.2.1]heptane, and 8-azabicyclo[3.2.1]octane cores were synthesized. A multigram scale (10 to 30 g) procedure for synthesizing title compounds from commercially available amino alcohols was studied.
Krafttraining mit Kindern und Jugendlichen
Authors: Zawieja Martin
Published: December 2024

Die olympischen Hebetechniken beinhalten drei Langhantelübungen: das Reißen, das Umsetzen und das Ausstoßen. Sie sind abgeleitet von den Wettkampfübungen der Gewichtheber. Diese Artikelserie beginnt mit der klassischen Übung „Reißen“. Weitere Artikel befassen sich mit dem Umsetzen und Ausstoßen sowie mit der Integration des Langhanteltrainings in den Trainingsprozess.
Heilung einer akuten vorderen Kreuzbandverletzung – eine Fallstudie über das neue
Cross-Bracing-Protokoll
Authors: van Haeringen Meike , Cross Tom , Filbay Stephanie
Published: December 2024

Der australische Arzt Dr. Tom Cross hat ein Therapieschema entwickelt, mit dem Risse des vorderen
Kreuzbands konservativ behandelt werden können. Hockeyspielerin Meike van Haeringen hat das
Cross-Bracing-Protokoll selbst ausprobiert und schildert hier ihre Erfahrungen damit.
Diagnose und Behandlung von Achillessehnenrissen
Authors: van Ark Mathijs
Published: December 2024

Achillessehnenrisse sind häufig und sie haben erhebliche Auswirkungen auf die sportliche Aktivität.
Dieser Artikel beschreibt die kürzlich veröffentlichte niederländische multidisziplinäre Leitlinie und
die damit verbundenen Auswirkungen aus der Sicht eines Sportphysiotherapeuten.
Efficacy of Low-Density Lipoprotein Cholesterol Apheresis in the
Treatment of Familial Hypercholesterolemia: Single Center
Experience
Authors: Hacisahinogullari Hulya , Bilik Oyman Gamze , Mutlu Ummu , Dadin Senem , Yalin Gulsah Y. , Soyluk Ozlem , Gul Nurdan , Kalayoglu Besisik Sevgi , Satman Ilhan , Karsidag Kubilay , Kubat Uzum Ayse
Published: December 2024

Purpose  Familial hypercholesterolemia (FH) is a genetic disorder
associated with extremely high levels of low-density lipoprotein cholesterol
(LDL-C) and increased incidence of cardiovascular disease. We aimed to evaluate
the efficacy and long-term outcomes of lipoprotein apheresis (LA) in the
treatment of FH.

Methods  Cardiovascular events that occurred before and after LA treatment
were evaluated by reviewing previous medical records of patients with FH.

Results  Thirteen patients (female/male: 8/5) were included in this study.
The mean Dutch score was 20±4. All patients were treated with a combination of
statin and ezetimibe. Before the onset of LA, 8 patients had a history of
coronary artery disease, and the median age at onset of cardiovascular disease
(CVD) in these patients was 24 years. At the initiation of LA, the median age
was 22 years and the mean LDL-C level was 410±130 mg/dL. The mean duration of LA
treatment was 13.9±6.9 years. The mean LDL-C levels before and after the latest
three LA treatments were 267±63.4 and 71.5±23.4 mg/dL, respectively. The mean
reduction in LDL-C levels after LA was 73±8.2%. De novo cardiovascular events
occurred in 10 patients during LA treatment; six of these patients had a known
history of CVD before LA. Eight of these patients underwent invasive procedures
for therapeutic purposes and the total number of procedures was 12.

Conclusion  LA is an effective method of reducing LDL-C levels and an
additional treatment option that may slow disease progression in patients with
FH who are at high risk of cardiovascular events.
Excess volume of an equimolar 3He–4He mixture
Authors: Bogoyavlenskii I. V. , Karnatsevich L. V. , Konareva V. G.
Published: December 2024

The molar volume of a 3He–4He mixture with 50.7% 3He has been determined by measurements of the dielectric permittivity. Measurements were made along isotherms in the pressure interval 0.3–25 atm at temperatures in the range 4.2–14°K as well as along isobars at pressures ranging from 1.0 to 16 atm. The excess volume VE, by which the molar volume of the mixture exceeds the ideal value, was determined as a function of temperature and density. It was found that this function has a complicated sign-alternating character. Calculations of the excess volume based upon the theory of Prigogine are presented, and it is shown that this theory exhibits quantitative agreement with the experiment. A small deviation between the experimental and theoretical values of VE arising at large densities is connected with the appearance of quantum statistical effects.
Theory of high-frequency characteristics of antiferromagnets
Authors: Breus S. A. , Sobolev V. L.
Published: December 2024

A theoretical study is made of the correction to the spectra of spin waves in easy-plane antiferromagnets. Expressions are derived which describe the dependence of these corrections on the intensity of the external magnetic field, on the temperature, and on the magnon energy.
Orbital degeneracy and some one-dimensional two-spin models
Authors: Kugel’ K. I. , Khomskii D. I.
Published: December 2024

We examine the properties of systems described by Hamiltonians with two types of spin variable. These appear for example in the analysis of magnetic materials with orbital degeneracy. We examine the exact solutions for a chain with two classical spins and for the equivalent one-dimensional Ising system in a magnetic field and compare our results with those derived for three-dimensional systems in the molecular-field approximation.
Theory of magnetic properties of solid oxygen
Authors: Slyusarev V. A. , Freiman Yu. A. , Yankelevich R. P.
Published: December 2024

It is shown that the entire set of data on the behavior of solid oxygen can be explained consistently by assuming that its magnetic subsystem is a quasi-two-dimensional Heisenberg system, whose structure changes with increasing temperature as follows: The α-phase has a quasi-two-dimensional collinear antiferromagnetic structure; in a narrow temperature range near the α–β transition there is a quasi-two-dimensional structure with helicoidal packing which, as the degree of lattice monoclinicity decreases, transforms continuously into a three-sublattice structure, as short-range order persists in the whole range of existence of the β-phase.
Pseudopotential construction of k·p models for energy spectra: the quasidegenerate spectrum in cadmium
Authors: Grechnev G. E.
Published: December 2024

A method is given for using pseudopotentials for constructing k·p models for the energy spectrum of the charge carriers near high-symmetry points in the Brillouin zone. In contrast to the traditional k·p method that is based on group-theory, the present method enables one to determine not only the nonzero constants in the spectrum but also the numerical values (in the pseudopotential approximation). The symmetry of the wave functions used is provided by specifying the reciprocal-lattice vectors and the structure factors. The method is applicable to any crystal whose band structure can be calculated by the pseudopotential method. It incorporates the nonlocal character of the pseudoponential and the effects of spin-orbit coupling. An example is considered for the energy spectrum of cadmium near the K symmetry point in the band system near the Fermi level. The numerical values of the spectrum constants are derived by the use of the nonlocal Stark— Falicov pseudopotential.
Single bioaerosol characterizations based on optical tweezers
Authors: Ying Qianwen , Li Cuihong , He Chaoxiong , Liang Tao , Shi Yunjie , Hu Huizhu
Published: December 2024

Bioaerosols, including bacteria, viruses, pollens, and fungal spores, play critical roles in global biosecurity, impacting human living environments and daily activities. The precise and in situ measurement of single bioaerosols represents a rigorous way to characterize their properties. Optical tweezers, which enable the stable trapping and precise control of single nanoparticles for in situ measurements and the study of their temporal evolution, have gained increasing attention in bioaerosol research. This Perspective systematically introduces the emerging field of single bioaerosol characterization based on optical tweezers. It gives a concise overview of the basic principle for trapping particles with different properties based on mechanical models of optical traps. It then reviews various applications of optical tweezers in the precise characterization of single bioaerosols, including their morphology, mass, chemical composition, and time evolution, through the spectral, spatial, or temporal analysis of optical scattering signals. This Perspective concludes by envisioning the future prospects for enhancing the practical application of bioaerosols. It suggests that future development directions should focus on enhancing trapping efficiency, increasing measurement throughput, and enhancing complex signal analysis capability. It also highlights their exciting potential in preventing disease transmission by identifying pathogens conveyed through bioaerosols.
Effect of melatonin treatment of pregnant Sarda ewes on lactation and lamb development
Authors: Luridiana S. , Ouadday M. , Mura M. C. , Ben Smida B. , Cosso G. , Carcangiu V.
Published: December 2024

Context Melatonin administration during pregnancy can influence fetal development and lactation. Aims This study aimed to verify whether melatonin treatment of pregnant Sarda ewes in spring improved lamb weight at birth, 7 and 21 days of age, time to first colostrum intake, birth behavior and survival. Additionally, we examined melatonin’s effect on milk yield and composition. Methods On 18 April, 200 ewes were assigned to two groups of 100 each, based on lambing date, body condition score, parity, age and milk yield. One group received melatonin implants on 20 April, 4 July and 17 September; the other served as control. Rams (12 per group) were introduced on 25 May and removed after 40 days. Lamb weight was recorded at birth, 7 and 21 days, while milk yield and composition were assessed bi-weekly from day 30 of lactation. Key results Lambs born to melatonin-treated ewes were heavier at birth (3.54 vs 2.89 kg), and at 7 (5.21 vs 4.40 kg) and 21 days of age (11.3 vs 10.1 kg) and reached colostrum intake sooner than lambs from untreated ewes (55.5 ± 5.3 vs 69.4 ± 5.6 min). Milk yield was higher in melatonin-treated ewes, with somatic cell counts decreasing in treated animals and increasing in controls over the five samplings. Milk fat was higher in treated ewes than controls during early lactation, although protein and lactose levels remained similar between groups. Conclusion Melatonin treatment throughout pregnancy improved lamb growth and milk production and quality, suggesting a potential management advantage for sheep.
Modeling fine-grained sociolinguistic variation
Authors: Miletić Filip , Przewozny-Desriaux Anne , Tanguy Ludovic
Published: December 2024

This chapter examines the use of recent data sources and
computational methods to study fine-grained sociolinguistic phenomena. We
deploy a custom-built corpus of tweets (Miletić et al. 2020) and neural word embeddings to investigate
the use of contact-induced semantic shifts in Quebec English. Drawing on an
analysis of 40 lexical items, we show that our approach is beneficial in
facilitating manual inspection of vast amounts of data and establishing
fine-grained patterns of language variation. While it is affected by a range
of noise-related issues, which we describe in detail, coarse-grained
annotation provides an efficient way of circumventing them. We use the
results filtered in this way to conduct a quantitative analysis of
sociolinguistic constraints on contact-induced semantic shifts, further
confirming the relevance of our approach.
DDSNet: a dual-domain supervised network for remote sensing image dehazing
Authors: Chen Xinyi , Liu Zhenqi , Huo Tianxiang , Duan Shukai , Wang Lidan
Published: December 2024

Haze shrouds remote sensing images with a thick veil, severely affecting the extraction of valuable information and posing many obstacles to subsequent high-level vision tasks. However, current methods frequently concentrate solely on spatial information while neglecting frequency domain information. To tackle the above problem, we propose a novel model in this study that combines information from the spatial and frequency domains. Unlike most existing methods, We also investigate the relationship between phase and amplitude spectrum components in the frequency domain and haze degradation and use this connection to design a network structure. We have meticulously designed a central Spatial-frequency block containing a Global frequency supervised block (GFS), a Local spatial supervised block (LSS), and a Spatial frequency fusion block (SFF) and utilized parameter-free normalization representation to improve the model's capacity to manage instances with varying attributes. To evaluate the effectiveness of our proposed method, we conduct extensive experiments on two remote sensing image dehazing datasets: SateHaze1k and RICE-1. The results indicate that our network performs exceptionally well, surpassing previous techniques in both quantitative assessments and visual quality. Our DDSNet demonstrates remarkable effectiveness through quantitative analysis, achieving the highest performance across three subsets of the SateHaze1k dataset, with measured values of 24.0053 dB PSNR and 0.9661 SSIM, 26.6054 dB PSNR and 0.9696 SSIM, and 21.3015 dB PSNR and 0.9208 SSIM.
Hybrid quantum neural network based on weight remapping and its applications
Authors: Dong Yumin , Wu Shuang
Published: December 2024

In order to explore the possibility of cross-fertilization between quantum computing and neural networks, and to analyse the effects of multiple weight remapping functions on the model performance, this article proposes two hybrid models based on weight remapping: the hybrid quantum neural network (HQNN-WR) and the hybrid quantum convolutional neural network (HQCNN-WR). The HQNN-WR model uses a two-layer fully connected network to process the input features, performs feature transformation by applying multiple weight remapping functions, and subsequently passes the processed features to the quantum neural network for computation, and finally outputs the classification results. The experimental results show that the model significantly improves the classification accuracy on Iris, Wine and Breast datasets and the convergence speed is faster. The HQCNN-WR model integrates convolutional layers, pooling layers, and fully connected layers, and prevents over-fitting through a dropout layer, and exhibits excellent performance in binary classification tasks on MNIST and KMNIST datasets. The model effectively mitigates the over-fitting problem on small sample datasets and enhances the robustness and generalization ability of the model while improving the digit recognition accuracy. By comparing different models, this article also demonstrates their significant effects on the performance of hybrid quantum neural networks, providing a new theoretical basis and experimental support for the optimization and application of quantum machine learning methods.
Probing the shape of the primordial curvature power spectrum and the energy scale of reheating with pulsar timing arrays
Authors: Fan Lele , Zheng Jie , Zhang Fengge , You Zhi-Qiang
Published: December 2024

Recent observations by pulsar timing array collaborations have detected a stochastic common-spectrum signal, which may originate from scalar-induced gravitational waves (SIGWs) generated by primordial curvature perturbations during inflation. Using the NANOGrav 15-year data set, we explore this hypothesis by constraining the primordial curvature power spectrum and reheating energy scale. We model the primordial power spectrum with a lognormal form and consider reheating with equation of state parameter $w=1/6$. Our Bayesian analysis reveals a narrow peak in the primordial power spectrum (the width of the spectrum $\Delta < 0.05$ at 95% confidence level) and constrains the reheating temperature to be $0.03 {\rm GeV} \lesssim T_{\rm rh} \lesssim 7.2 {\rm GeV} $. The best-fit SIGW spectrum shows a characteristic turning point near $f \sim 10^{-8.1}\,{\rm Hz}$, marking the transition from reheating to radiation domination, providing a unique probe of early Universe properties.
Transsynaptic modulation of cerebellar nuclear cells: theta AC-burst stimulation
Authors: Kang Qi , Talesh Amir Roshani , Lang Eric J , Sahin Mesut
Published: December 2024

Objectives. Transcranial alternating current stimulation (tACS) and its variants are being tested in clinical trials for treatment of neurological disorders, and cerebellar tACS (ctACS) in particular has garnered much interest because of the involvement of the cerebellum in these disorders. The main objective of this study was to investigate the frequency tuning curves for the entrainment of the Purkinje cells (PCs) and the cerebellar nuclear (CN) cells by their axonal projections. In addition, we aimed to investigate the temporal and steady-state characteristics of the PC-CN transsynaptic modulation under clinically relevant stimulation waveforms. Approach. Experiments were conducted in anesthetized rats with the electrical stimulations applied to the cerebellar cortex while the spiking activity of PC and CN cells were recorded extracellularly. The PC-CN modulation was tested in a wide range of AC frequencies (1–1000 Hz). Furthermore, high-frequency AC stimulation (40–400 Hz) repeated at 4 Hz, that we termed theta AC-Burst Stimulation, was tested for its transient and steady-state responses. Main results. The CN cell firing patterns suggest that the population of projecting PCs that is entrained by the surface stimulation consists of the cells that are entrained in 180° opposite phases to each other. The CN cell spiking activity in general follows the entrainment pattern of the projecting PCs in the transient response. The CN entrainment during the steady-state turns into suppression at high frequencies of the stimulation. The PC responses could be explained with a simple statistical model that suggested that low-frequency (as well as DC) and high-frequency AC modulation may be operating through different neural mechanisms. Significance. High-frequency AC stimulation with a low-frequency envelope can be leveraged to induce CN modulation at theta frequencies. These results may explain some of the clinical findings and provide insight for future clinical trials of ctACS.
Green synthesis of TiO2 (anastase) nanoparticles using aloe vera extract as a reducing agent for photocatalytic material
Authors: Astiawanti Y , Faaizatunnisa N , Munasir M
Published: December 2024

Titanium dioxide nanoparticles (TiO2 NP) were successfully synthesized using an aloe vera extract-reducing agent with the green synthesis method. The anatase phase of TiO2 NP tetragonal structure with an average crystal size of 59 nm was detected from the XRD pattern. From the results of UV-visible spectroscopy, the optically active region of TiO2 NP at a wavelength of 265 nm with a band gap energy of 2.76 eV. The formation of Ti-O-Ti and Ti-O bonds confirmed the formation of TiO2 NPs in the synthesized material. SEM morphology of TiO2 NP confirmed that the nanoparticles were irregularly spherical. Photodegradation of methylene blue dye was further studied, and a maximum degradation efficiency of 90% was achieved during 10 minutes of irradiation. Photodegradation studies showed that anatase TiO2 NP showed faster and higher degradation efficiency than chemically synthesized TiO2.
Analysis of the distribution of groundwater pollution using the geoelectric method in the Donomulyo Area, Wijimulyo, Nanggulan District, Kulon Progo
Authors: Fatimah  , Rizqi A F
Published: December 2024

Polluted water has a resistivity value that is different from natural water. The region has aquifer potential in the Kulon Progo area, namely Donomulyo, and Wijimulyo, but many use PDAM water. For this reason, this study uses the Schlumberger configuration geoelectric method to see the resistivity vertically. There are six research points with different lithology and geomorphology conditions. The result is a resistivity value processed with Excel and Progress and then correlated between points. From the research, it was found that there are rocks that are suspected to be aquifers but have a high resistivity compared to aquifers with water suitable for consumption in the area. The resistivity value of polluted water here is 11 Ohm meters, in the slightly contaminated category. Areas with light contamination are to the north of Donomulyo and Wijimulyo.
Ti-hydroxyapatite (HAp) composite study to enhance self-antibacterial and biocompatibility
Authors: Fauziyah N A , Tola P S , Permatasari A W , Wardhani P C , Hidayah E N , Jawaid M , Pratapa S
Published: December 2024

This study aims to evaluate titanium’s impact as a coating and doping agent for hydroxyapatite (HAp) material. Ti is typically added to HAp in the medical industry to enhance its biocompatibility and antibacterial properties. HAp was prepared from chicken egg shells and composited with Ti using the solid mixing method. The composite produced with the addition of Ti was proven to increase its antibacterial properties through element characterization. The addition of Ti is able to initiate ion release from HAp and its interaction with the biological environment. The release of titanium ions can also have a direct antibacterial effect. However, this is usually more limited compared to the photocatalytic effect of TiO2.
On the 2022 Hunga Tonga-Hunga Ha’apai meteo-tsunami: Accelerated propagation due to atmospheric effects
Authors: Realita A , Fahmi M N , Prastowo T , Tika N M A S M , Madlazim
Published: December 2024

On 15 January 2022, an explosive eruption of Hunga Tonga-Hunga Ha’apai (HTHH) submarine volcano tremendously occurred in the southern Pacific. This released a huge amount of energy into global atmosphere, generated propagating atmospheric disturbances at large scales and in turn induced a fast-travelling tsunami wave with a phase speed higher than a typical value for a conventional tsunami of 800 kmh−1. In response to this extreme occurrence, we examined tsunami propagation from the 2022 HTHH case, particularly in the far-field observations where atmospheric effects mostly influence on the propagation. Therefore, this study aims to determine the speed of a leading meteo-tsunami propagating on the sea surface detected by field instrument operated by National Oceanic and Atmospheric Administration. The methods involved tsunami datasets extraction and examination, and the corresponding analysis. The results showed that tsunamis travel with different rates in near- and far-field regimes. For 100 min or approximately 1300 km away from the epicentre, the wave propagates at a typical speed of 800 kmh−1 or about 220 ms−1. In the far-field, the wave is accelerated up to a value similar to the Lamb wave speed of 1110 ± 10 kmh−1 that is equal to 308 ± 3 ms−1. The current research finding implies for a better prediction of tsunami travel time and hence arrival time for minimising risk at the cost of early evacuation whenever a meteo-tsunami is generated owing to an extreme eruptive event.
Inhibition of hepatocellular carcinoma progression by methotrexate-modified pH-sensitive sorafenib and schisandrin B micelles
Authors: Yan Yu-hui , Kong Liang , Lu Ying-bo , Li Si-yang , Yan Ai-wen , Song Yue-wen , Huang Zi-han , Zhu Hao-nan
Published: December 2024

Due to the lack of specific symptoms, hepatocellular carcinoma (HCC) is often detected in advanced stages. However, pharmacological systemic therapy, a common clinical treatment for advanced HCC, is prone to serious toxic side effects. To address these issues, we designed a pH-sensitive sorafenib and schisandrin B micelle modified by methotrexate (MTX-SOR/SchB micelles), a nanosystem that combines the advantages of targeted delivery and pH sensitivity, and is capable of improving drug bioavailability and mitigating drug toxic side effects. Firstly, we characterized the physical and chemical properties of micelles, including particle size, Zeta potential, encapsulation efficiency, pH sensitivity and stability. Hepa1-6 cells and fluorescence imaging were used to investigate the targeting ability of MTX-SOR/SchB micelles. Anti-hepa1-6 cell proliferation, invasion, migration, and pro-apoptotic effects were evaluated in vitro. In addition, HCC tumor-bearing mouse and lung metastasis mouse models were established to investigate the anti-HCC ability of MTX-SOR/SchB micelles, and finally their biological safety was evaluated. We found that the particle size of MTX-SOR/SchB micelles was uniformly distributed, could effectively encapsulation of the drug, had low leakage rate, sensitive pH response, and perfect stability. And MTX-SOR/SchB micelles could target HCC cells with high expression of folate receptor in vitro and in vivo. Moreover, MTX-SOR/SchB micelles could inhibit the proliferation, invasion and metastasis of HCC in vitro and in vivo and promote apoptosis. MTX-SOR/SchB micelles also show good biosafety. In conclusion, MTX-SOR/SchB micelles can effectively enhance the therapeutic effect of HCC, reduce systemic toxicity of drugs, which is expected to be used in clinical treatment.
The application of remote monitoring tools in the educational process on the example of the research of the content of water vapor in the atmosphere
Authors: Yelistratova L A , Apostolov A A , Tomchenko O V , Ya Khodorovskyi A , Tymchyshyn M A
Published: December 2024

The paper shows the advantages of using remote satellite monitoring of the Earth in the educational process for the purposes of sustainable development. Using the example of the study of water vapor content in the atmosphere of Ukraine from 2001 to 2022, calculations of two approaches to obtaining, processing, and interpreting remote sensing data are given. The first approach – complicated – consisted of receiving satellite monitoring data and their further processing (transformation, cutting within the given area, interpretation, and conversion) in the Erdas Imagine program directly on a local computer. The second approach – simplified – consisted of the application of the Giovanni NASA online web application, which allows effective use of remote satellite monitoring data on a remote server based on specific requests and configured parameters, with results displayed on the screen in the form of thematic maps and graphs, that is, requiring their processing to a minimum. The discussion provides a comparison of the obtained results of these two proposed approaches (complicated and simplified) and describes their advantages and disadvantages for more efficiently obtaining the results of scientific research.
Below ground carbon stock of mangrove stands of a mining site in Hinatuan Island, Northeastern Mindanao, Philippines
Authors: Benavides R C , Patero J L , Jondonero M A P , Jondonero P K A , Mariano H G , Amparado R F
Published: December 2024

Mangrove ecosystem provides important services such as storing and sequestering large amount of carbon. However, it faces several anthropogenic pressures especially from resource extractive activities that threatened the ecosystem. Hence, huge companies are obliged to make rehabilitation efforts to rehabilitate the mangrove ecosystem that they have caused damage. Our study aims to determine the carbon stock dynamics of a mangrove rehabilitated site which was damaged due to the siltation brought by the nearby mining. We established a study plot in a mangrove rehabilitated site (Lipata) near the mining area and on a nearby natural mangrove forest (cagutsan) as a point of reference. We determine the mean DBH, height and estimated the soil carbon storage capacities. We found out that in both sites of rehabilitated (Lipata) and natural (Cagutsan) mangrove stand the Rhizophora mucronata is the most dominant, both has similar mean dhb of 6 cm and the height is mostly dominated by. The soil C content shows that as the soil gets deeper up to 50-100 cm the higher the soil carbon content. There was no significant variation in terms of the average soil carbon content of the rehabilitated site is 42.63 MgC/Ha and the natural mangrove stand of 53.59 MgC/Ha. Hence the finding supports the effectiveness of the rehabilitation efforts and calls for continuous rehabilitation of damaged mangrove sites in the area.
Improved the municipal wastewater treatment technology in towns and villages
Authors: Tkachenko T V , Haidai O O , Kamenskyh D S , Yevdokymenko V O
Published: December 2024

Traditional biological wastewater treatment systems are unable to completely remove biogenic substances due to the lack of the necessary amount of substrate, the specifics of the technological scheme, and only the involvement of raw sediment and partially excess sludge in the biological process (continued aeration) can solve the specified problem. The use of psychrophilic anaerobic displacement reactors with an expanded layer of sludge (EGSB-reactors) and subsequent stages of biological treatment will allow to achieve of deep purification of wastewater from carbon, nitrogen and phosphorus in purified water and significantly reduce the volume of extracted sediments and their morphology. Therefore, the aim of our work was the development of a method of municipal wastewater treatment using facilities with a lower material capacity, with lower energy consumption for deep biological removal of carbon, nitrogen and phosphorus compounds. Systematic investigations of the technologies, reactor designs, and processes for anaerobic treatment of low-concentration effluents in psychrophilic conditions calculations were carried out at the Kaniv wastewater treatment plant. Based on this, a model-concept of treatment facilities was developed. Design work was completed for the reconstruction of the Kaniv wastewater treatment plant, where two EGSB psychrophilic reactors, converted from the existing two-tier clarifiers, were put into operation.
Application of geoinformation systems in the development of the city’s intelligent transport network
Authors: Ye Pomortseva O , Kobzan S M , Panteleeva N B
Published: December 2024

The purpose of the research in this article is to reveal modern approaches in the development of the intelligent transport city’s networks, as a component of the social infrastructure of the modern city. The research carried out by the authors in this direction is relevant in the field regarding the improvement and attractiveness of a modern, digital city. In particular, the authors in the article examine the so-called “sleeping” districts with multi-story buildings. The authors suggest the creation of a high-speed bus transportation system to improve the services provided by public transport. The article uses the ArcGIS geoinformation system and built a geodatabase. These two components together allow you to visualize results for a visual presentation of information and qualitative analysis. The authors use such proprietary developments in the article that it is possible to model various variants of the transport network. The authors conducted research on the example of Kramatorsk, a city of regional importance in the Donetsk region. The article develops and proposes a sequence of stages in the development of a geodatabase and a transport network of high-speed bus transportation. The further direction of research may be related to the accounting of a large number of factors. The authors carried out the work with the help of the ArcGis geoinformation system and the developed geodatabase with the necessary layers and attribute information. The article develops a system of high-speed bus transportation in the city of Kramatorsk with promising routes. Such development will allow further improvement of the social infrastructure of other cities. The principle of preliminary modeling using the developed geodatabase used by the authors will be effective for solving issues related to social infrastructure, so it can be applied to solve similar problems in any city. Thus, the authors’ intellectual analysis of geostatic models of public transport movement on the territory of the city made it possible to find zones and classify them depending on the pedestrian accessibility to stops and compare them with existing transport routes. With the help of geostatistics methods, the article transforms data from a discrete to a continuous form of representation.
Consideration of multifactorial geomechanical-technological factors in determining the rational parameters for site outgassing technology at the Western Donbas mines (Ukraine)
Authors: Bondarenko V I , Kovalevska I A , Symanovych H A , Salieiev I A , Shyshov M V
Published: December 2024

The paper examines a promising component for the energy sector – development of gas reserves and gas production, taking into account the peculiarities of mining-geological and mining-technical conditions of the Western Donbas deposits (Ukraine). Two components of the solution to this issue are analyzed: the texture and physical-mechanical properties of weakly metamorphosed rocks and the use of high-performance complexes, reuse of extraction drifts with resource-saving technologies for their maintenance. Based on multivariate computational experiments, schemes have been developed to determine parameters for the location of outgassing wells. Three basic methodological provisions based on the conducted analytical research performed by the finite element method have been substantiated. Calculations, which are the basis for the methodology of selecting outgassing well location parameters, have been conducted. Experimental measurements conducted at six extraction sites of two mines confirm that the outgassing coefficient according to the recommended parameters exceeds that corresponding to the existing outgassing well location schemes in mines (the range of relative increase in the outgassing coefficient is from 19 % to 123 %). In addition, a significant influence (up to 35 – 60 %) has been revealed of the coal-overlaying formation texture, the well gradient angle (20 – 30 %), and the drilling step of outgassing wells (30 – 40 %). It has been found that an increase in the longwall face advance velocity improves the gas trapping efficiency by 25 – 40 %, leading to a decrease in the methane flow into adjacent mine workings and substantiates an opportunity to accelerate the longwall face advance.
Methodology of operative setting of mass crystallization parameters of gas hydrate in reservoir systems
Authors: Pedchenko M M , Pedchenko N M , Pedchenko L O
Published: December 2024

In the course of experimental studies, the method of operational setting of the parameters of mass crystallization of gas hydrate in reservoir systems that have not reached a state of equilibrium is substantiated. The technique is implemented by setting the process parameters at the moment of visual identification of the solid phase of the gas hydrate on the interphase surface of the gas bubble or the place of its exit from the liquid. The requirements for the construction of the reactor unit of the laboratory installation for the implementation of this technique are substantiated. A laboratory installation has been developed and implemented. The results of test studies are presented and the features of identification of the solid phase of gas hydrate at the moment of the beginning of its mass crystallization are demonstrated. The proposed method allows you to quickly obtain objective information about the possible behavior of this system in the case of intensive changes in parameters in non-equilibrium conditions.
Strategic approach to sustainable development of railway transport and optimizing the use of empty cars in organizing transportation of dangerous goods
Authors: Strelko O H , Muzykin M I , Nesterenko H I , Bibik S I , Soloviova O S
Published: December 2024

Under present-day conditions in the development of the transport market, organizing the transportation of dangerous goods by rail is an urgent task, considering the specific properties of the impact of dangerous goods on technical devices, human health, and the environment. The number of parameters influencing the safety of the transportation process is quite large, therefore, programs for the safe and sustainable development of railway transport must involve protection from all possible sources of danger. The strategy for sustainable development of railway transport should be based on improving regulatory and technical documentation, developing safe technology for eliminating the consequences of emergencies, developing network computer technologies, and improving vehicles and transportation technology. Since the transportation of dangerous goods represents a significant share of the total transportation of goods, including railway transport, the research outlined in the presented work is aimed at solving some aspects of this strategy, which as a result forms a strategic approach to the sustainable development of railway transport when organizing the transportation of dangerous goods. In this paper, considering modern conditions for the development of railway transport, it is proposed to comprehensively implement the assigned task with a new approach by introducing a system of operational control during the transportation and temporary storage of dangerous goods and applying the developed method for the optimal distribution of empty cars among cargo checkpoints in the organization of the transportation process.
An integrated approach to forecasting and managing emergency situations in the working faces of coal mines: a set of technical, organizational and measures to ensure occupational safety with subsequent assessment of potential consequences
Authors: Yevtushenko N S , Tverdokhliebova N Y
Published: December 2024

The need for worker safety in the coal mining industry is critical because workers in this industry are exposed to a number of hazards and risks. Accidents occurring in the technogenic sphere of the coal industry cause significant damage to the state economy. Loss of production, repair and restoration of infrastructure, compensation to victims, damage to the environment require significant financial outlays. Therefore, it is important to take all necessary measures to prevent accidents and minimize their consequences. The purpose of the work is to identify the zones of manifestation of hazards and forecasting the risks of emergencies, as well as to develop a set of technical and organizational measures to prevent accidents and incidents during production work. The importance of the study lies in the development of recommendations for identifying the main risk factors in coal mines cleaning faces, the creation of a set of technical and organizational measures to quantify the risk of emergencies, as well as improving the level of safety of the main working processes in planning safe mining operations. Ensuring safety of coal industry workers is an integral part of successful and efficient operation of this industry.
Geography of the COVID-19 pandemic in Ukraine and the world: similarities and differences
Authors: Kholoshyn I V , Nazarenko T G , Mantulenko S V , Mazykina O B , Varfolomyeyeva I M
Published: December 2024

The COVID-19 pandemic has its own geography, reflected in the spatio-temporal model of its regional evolution, with uneven and spatially differentiated worldwide spread. The global nature of the coronavirus pandemic makes it impossible to study its evolution in a single country in isolation from global realities. Comparison of the dynamics of growth in the number of detected cases of coronavirus infection in the world and Ukraine shows that the pandemic is wave-like, but the amplitude, period and length of the variations barely match. Each of the waves of the pandemic in the world and Ukraine had its own characteristics in the spatial and temporal differentiation of the disease parameters, which was determined by various and multidirectional factors. Based on the results of the geospatial analysis, a zoogeographical map of Ukraine’s zoning according to the epidemiological course of the COVID-19 pandemic was constructed, which reflects the spatial differentiation of the pandemic parameters, which is associated with various and multidirectional factors that determine the course of the epidemic, the main ones being: population density and spatial mobility, as well as the peculiarities of regional governance.
Features of the functional zoning of esports arenas taking into account the concepts of sustainable development of territories
Authors: Lobanchykova N M , Yaschenko O F , Lobanchykova V S , Markina L M
Published: December 2024

The development and digitalisation of modern society have created the necessary preconditions for the emergence of new hobbies and sports. Esports has become an integral part of society and is officially recognised at the state level in several countries, including Ukraine. That is why the question arises of the emergence of esports arenas as a new type of architectural typology of public buildings and structures. This publication is devoted to studying the peculiarities of functional zoning of esports arenas, considering the concept of sustainable development of the territory. The article analyses existing esports arenas, computer clubs in the world and Ukraine, and approaches to the organisation and functioning of esports championships. The needs of players and spectators for creating a comfortable space and convenient functional planning of esports arenas are investigated, considering the concept of sustainable development of territories. The proposed solutions are analytical and conceptual, requiring a detailed development of constructive, architectural and design solutions, considering the current standards for public buildings and structures.