bluuebunny/crossref_metadata_2025 huggingface dataset:
Folkloric Imagery and Revolutionary Vision in Kofi Anyidoho’s A Harvest of Our Dreams: With Elegy for the Revolution
Authors: Shittu Toyin
Published: October 2024

Folklore is one of the core cultural values in traditional societies and writers who are conscious of its aesthetic relevance deploy it in their creative works. Folktale elicits imagery which underscores the relationship of humanity with nature and mythical elements. Writers exploit this relationship to establish traditionalism and pursue revolutionary vision in their works. Anyidoho uses his affiliation to, and understanding of, the Ewe cultural (one of the traditional societies in Ghana) milieu to comment on issues that are germane to the existence of the people in A Harvest of Our Dreams: With Elegy for the Revolution. This paper, through examination of some of the poems in the collection with Raymond Williams’s Cultural Materialism revealed that the poet, with poetic devices, uses folklore and traditional images to advocate for revolution in his society. The paper comes to the conclusion that the poems in the collection are replete with folklore and traditional imagery, which the poet deploys with poetic essence to satirise failings in his society.
Glucose and glycogen affects Ca2+transient during fatigue to a greater extent in the least than in the most fatigue resistant mouse FDB fibers
Authors: Hesse Erik , Ammar Tarek , Renaud Jean‐Marc
Published: October 2024

The overall objective was to determine how no extracellular glucose and/or low glycogen content affect fatigue kinetics in mouse flexor digitorum brevis (FDB) single muscle fibers. High glycogen content (Hi GLY), near normal in situ level, was obtained by incubating fibers in culture medium containing glucose and insulin while low glycogen content (Lo GLY), at about 19% of normal in situ level, was achieved by incubating fibers without glucose. Neither Lo GLY nor the absence of extracellular glucose (0GLU) affected tetanic [Ca2+]i prior to fatigue. The number of contracting unfatigued fibers versus stimulus strength relationship of Lo GLY‐0GLU fibers was shifted to higher voltages compared to Hi GLY fibers exposed to 5.5 mM glucose (5GLU). The relationship for Lo GLY‐0GLU fibers was shifted back toward that of Hi GLY‐5GLU fibers when glucose was reintroduced, whereas the removal of glucose from Hi GLY‐5GLU fibers had no effect. Fatigue was elicited with one 200 ms long tetanic contraction every s for 3 min. Both Lo GLY and 0GLU increased the rate at which intracellular tetanic concentration ([Ca2+]i) declined and unstimulated [Ca2+]i increased during fatigue in the order of the least fatigue resistant > mid fatigue resistant > the most fatigue resistant fibers.
Normalized solutions for the Kirchhoff equation with combined nonlinearities in ℝ4
Authors: Qiu Xin , Ou Zeng-Qi , Tang Chun-Lei , Lv Ying
Published: October 2024

In this article, we study the following Kirchhoff equation with combined nonlinearities:

−

a
+
b

∫

R

4

∣

∇

u
∣

2

d
x

Δ
u
+
λ
u
=
μ

∣
u
∣

q
−
2

u
+

∣
u
∣

2

u
,

in

R

4

,

∫

R

4

∣
u
∣

2

d
x
=

c

2

,

\left\{\begin{array}{l}-\left(a+b\mathop{\displaystyle \int }\limits_{{{\mathbb{R}}}^{4}}{| \nabla u| }^{2}{\rm{d}}x\right)\Delta u+\lambda u=\mu {| u| }^{q-2}u+{| u| }^{2}u,\hspace{1.0em}\hspace{0.1em}\text{in}\hspace{0.1em}\hspace{0.33em}{{\mathbb{R}}}^{4},\\ \mathop{\displaystyle \int }\limits_{{{\mathbb{R}}}^{4}}{| u| }^{2}{\rm{d}}x={c}^{2},\end{array}\right.

where

a
,
b
,
c
>
0

a,b,c\gt 0

,

μ
,
λ
∈
R

\mu ,\lambda \in {\mathbb{R}}

,

2
<
q
<
4

2\lt q\lt 4

. Under different assumptions on

b
,
c
>
0

b,c\gt 0

and

μ
∈
R

\mu \in {\mathbb{R}}

, we prove some existence, nonexistence, and asymptotic behavior of the obtained normalized solutions. When

μ
>
0

\mu \gt 0

:(i) for

2
<
q
<
3

2\lt q\lt 3

, we obtain the existence of a local minimizer ground-state solution and a mountain-pass-type solution, (ii) for

q
=
3

q=3

and

3
<
q
<
4

3\lt q\lt 4

, we obtain the existence of a mountain-pass type ground-state solution respectively, under different assumptions. When

μ
<
0

\mu \lt 0

and

2
<
q
<
4

2\lt q\lt 4

, we prove the nonexistence result of the aforementioned problem. We also investigate the asymptotic behavior of the normalized ground-state solutions, when

μ
→

0

+

\mu \to {0}^{+}

and

b
→

0

+

b\to {0}^{+}

, respectively.
IUPAC’s 2024 Top Ten Emerging Technologies in Chemistry
Authors: Gomollón-Bel Fernando
Published: October 2024

In 2019, the IUPAC started a quest to select the most interesting emerging technologies in the chemical sciences [1]. Now, this established initiative continues year after year—adding ideas to a list of innovations with an enormous potential to transform fields as diverse as materials science, energy, healthcare, agriculture and computing, among others [2]. Overall, the IUPAC “Top Ten Emerging Technologies in Chemistry” align with the United Nations’ Sustainable Development Goals, in a quest to secure a sustainable future and pave the way to a circular economy [3]. This new list delves into new materials, unexplored physical phenomena, and creative solutions to global challenges, including prevalent diseases and the still ongoing energy and fuel crisis. As in the first “Top Ten” paper, the technologies hover over a broad range of readiness—from laboratory discoveries to commercial realities, hence “emerging.” But all of them, carefully curated by a panel of experts nominated by IUPAC, are equally exciting. Read on.
A highly sensitive β-AKBA-Ag-based fluorescent “turn off” chemosensor for rapid detection of abamectin in tomatoes
Authors: Ahmad Touqeer , Mabood Fazal , Sarwar Rizwana , Khan Ajmal , Halim Sobia Ahsan , Rehman Najeeb Ur , Csuk Rene , Boque Ricard , Al-Harrasi Ahmed
Published: October 2024

This study presents the synthesis of a sensitive AKBA-Based fluorescent “Turn off” chemosensor for rapid detection of abamectin residues in tomatoes. Silver nanoparticles were synthesized by using 3-O-acetyl-11-keto-β-boswellic acid (β-AKBA) by chemical reduction method. The characterization of AKBA-AgNPs was performed by UV–vis spectroscopy, Fourier transform infrared spectroscopy (FTIR), and transmission electron microscopy (TEM). The average particle size of NPs was found to be 46.2 ± 2 nm with lumps of macro-sized particles. TEM data further revealed that nanoparticles were polydispersed and spherical in shape and also show good stability at high temperatures and pH. The biosensing properties of nanoparticles were studied for the detection of abamectin residues in tomato samples. Abamectin a natural product derived from the bacterium Streptomyces avermitilis is effective against a wide range of pests. In sensing protocol 67 organic tomato samples were segregated into 34 (safe group, without a spray of abamectin) and 33 samples (as an unsafe group, sprayed with abamectin insecticide solution). Emission spectra of these sample solutions were measured in the wavelength range of 450–530 nm, excitation wavelength was fixed at 488 nm. The effect of minor wavelength variation for the discrimination and classification of the two groups was investigated by applying two chemometric methods including partial least square discriminant analysis and principal component analysis with projection. The mechanism of its interaction between the AKBA-Ag NPs and abamectin residue was also established through UV/visible, FTIR, and TEM microscopy. This newly synthesized nanoparticle was found to have excellent stability at variables, i.e., temperature, storage period, salt concentration, and pH. Therefore, the synthesized Ag NPs are potential candidates for biosensing applications against abamectin.
Estimating Social Effects with Randomized and Observational Network Data
Authors: Chan TszKin Julian , Estrada Juan , Huynh Kim , Jacho-Chávez David , Lam Chungsang Tom , Sánchez-Aragón Leonardo
Published: October 2024

This paper introduces an innovative approach to identifying and estimating the parameters of interest in the widely recognized linear-in-means regression model under conditions where the initial randomization of peers determines the observed network. We assert that peers who are initially randomized do not produce social effects. However, after randomization, agents can endogenously develop significant connections that potentially generate peer influences. We present a moment condition that compiles local heterogeneous identifying information for all agents within the population. Under the assumption of ψ-dependence in the endogenous network space, we propose a Generalized Method of Moments (GMM) estimator, which is proven to be consistent, asymptotically normally distributed, and straightforward to implement using commonly available statistical software due to its closed-form expression. Monte Carlo simulations demonstrate the GMM estimator’s strong small-sample performance. An empirical analysis utilizing data from Hong Kong high school students reveals substantial positive spillover effects on math test scores among study partners in our sample, provided that their seatmates were exogenously assigned by their teachers.
Wide FOV metalens for near-infrared capsule endoscopy: advancing compact medical imaging
Authors: Moghaddasi Mojtaba , Perez Coca Erik Edilson , Ye Danni , Flores Diego Alejandro , Wu Xudong , Jalal Abdul , Ren Ziming , Abrinaei Fahimeh , Hu Bin
Published: October 2024

This study presents the design, fabrication, and characterization of a wide field-of-view (FOV) metalens optimized for capsule endoscopy. The metalens achieved a 165° FOV with a high modulation transfer function (MTF) of 300 lines per millimeter (lp/mm) across the entire FOV, operating in the near-infrared (NIR) narrow-bandpass imaging at 940 nm. The performance of the metalens-based system is evaluated using two bandwidths, 12 nm and 32 nm, showing MTF values of 0.2 and 0.3 at 250 lp/mm, respectively. The metalens-based system maintains a compact form factor with a total track length of 1.4 mm and a diameter of 1.58 mm. Compared to a traditional 108° FOV endoscope, the nano-optic capsule endoscope demonstrated superior performance in terms of FOV, contrast, and resolution. This advancement represents a significant step toward enhancing diagnostic capabilities in medical imaging, offering improved performance in a more compact package compared to conventional optics.
PLOMAT: plotting material flows of ‘commonplace’ Late Bronze Age seals in western Eurasia
Authors: Tsouparopoulou Christina , Maynard Glynnis , Russo Sergio G.
Published: October 2024

Since the mid-twentieth century, the study of designs on seals has often focused on exotica and elite items. The PLOMAT project investigates visual and material communication outside of elite exchange networks during the Late Bronze Age in western Eurasia. The authors present results from plotting flows of ‘commonplace’ cylinder seals and those classified as ‘Common-Style Mittani’.
MUSAHİP MUSTAFA PAŞA’NIN MAHMİLİKTEN HAMİLİĞE UZANAN YOLCULUĞU
Authors: Özbay Kara Özge
Published: October 2024

Kanuni Sultan Süleyman’dan sonra Osmanlı’nın en uzun saltanat süren ikinci hükümdarı IV. Mehmet’in musahibi, veziri ve damadı olması dolayısıyla devrin önemli figürlerinden biri olan Musahip Mustafa Paşa, bulunduğu statünün kendisine sağladığı imkânlarla bir hami konumuna erişmiştir. Enderun’da eğitimini tamamladıktan sonra Hazine Odası’nda Mustafa Ağa olarak başladığı saray hizmetine Has Oda’da devam etmiş, padişah musahibi olduktan sonra onun için ikbal günleri başlamıştır. Padişah-ı makbul olarak nitelenen Mustafa Ağa, kısa sürede sultanın güvenini kazanmış ve kendisine ikinci vezirlik tevcih edilmiştir. Ağalıktan paşalığa uzanan bu yolculuk; rikab-ı hümayun kaymakamlığı, seraskerlik, kaptanıderyalık ve Boğaz muhafızlığı görevleri ile devam etmiştir.
Babası da bir musikişinas ve şair olan Mustafa Paşa, aileden gelen edebiyat ve sanat merakına hattatlık meziyetini de eklemiştir. Günümüze ulaşan tek şiiri oluşu dolayısıyla onu bir edebiyat muhibbi olarak tanımlamak daha doğrudur. Biyografik kaynaklarda ve manzumelerde ilim ve sanat erbabının hamisi olarak tavsif edilmiş, özellikle cömertliği ile birçok methiyeye konu olmuştur. Paşa’nın teşviki ile yazılan eserlerin yanı sıra kendisine ithaf ve takdim edilen eserler/manzumeler olduğu tespit edilmiştir. Methi vesilesiyle pek çok kaside kaleme alınmış; banilik faaliyetleri üzerine tarihler düşürülmüş ve Hatice Sultan ile nikâhını tebrik maksadıyla şiirler yazılmıştır. Bu çalışmada, Musahip Mustafa Paşa’nın himaye muhiti ele alınacak, ona sunulan eser ve manzumeler etraflıca değerlendirilecek ve bu metinlerde kendisi için kullanılan methiye unsurları üzerinde durulacaktır.
The Effects of Abstinence Self-Efficacy and Alcohol Recovery on the Willingness for Self-Sufficiency of Alcoholics: The Mediating Effects of Resilience
Authors: Kim Jin-Sook , Moon Hyun-Ju , Kim Mi-Jin
Published: October 2024

This study aims to examine how abstinence self-efficacy and alcohol recovery among alcoholics affect their willingness for self-sufficiency, and to elucidate the indirect mediating role of resilience in this relationship. To achieve this, a survey was conducted from October to November 2023, targeting participants from sobriety groups, A.A(Alcoholics Anonymous) members, and patients currently hospitalized. A total of 245 responses were collected, and 217 valid responses, excluding incomplete surveys, were used for the final analysis. The raw data obtained from these surveys were analyzed using structural equation modeling with SPSS and AMOS. The results are as follows: First, abstinence self-efficacy and alcohol recovery significantly influenced willingness for self-sufficiency. Second, the mediating model, which set resilience as a mediator in the relationship between abstinence self-efficacy, alcohol recovery, and willingness for self-sufficiency, was confirmed as a suitable model. Specifically, abstinence self-efficacy and alcohol recovery had significant positive effects on resilience and willingness for self-sufficiency, and resilience significantly influenced the willingness for self-sufficiency. Third, both abstinence self-efficacy and alcohol recovery had direct effects on the willingness for self-sufficiency and had indirect effects through resilience. Based on these findings, effective and practical intervention plans for alcoholics are suggested.
Mechanisms of RET-mediated signal transduction
Authors: Carlomagno Francesca , Moccia Marialuisa , Federico Giorgia , Santoro Massimo
Published: October 2024

The rearranged during transfection (RET) receptor tyrosine kinase is physiologically stimulated by growth factors belonging to the glial cell line-derived neurotrophic factor family and by the growth differentiation factor-15 cytokine. RET plays a critical role in normal development as well as in various human tumors and developmental disorders. This review focuses on mechanisms of RET signaling and their alterations in human diseases.
О ДВУХ КОНЦЕПЦИЯХ ОПИСАНИЯ КИНЕМАТИКИ ДЕФОРМИРОВАНИЯ СПЛОШНОЙ СРЕДЫ: ПОЛЕМ СМЕЩЕНИЙ ТОЧЕК И ПОЛЯМИ СМЕЩЕНИЙ МАТЕРИАЛЬНЫХ ПЛОЩАДОК
Authors: РЕВУЖЕНКО А.Ф.
Published: October 2024

Рассмотрен метод описания кинематики деформирования, основанный на концепции смещения материальных площадок среды. Показано, что перемещения площадок описываются двумя векторными полями перемещений или, как альтернатива, одним тензорным полем, полем относительного смещения площадок. Тензор несимметричен, его компоненты не связаны условиями совместности Сен-Венана. Такой подход восстанавливает “равноправие” между кинематическим и силовым описанием процесса деформирования среды. Принятое понятие напряжений относится к силам, действующим на площадки внутри тела, а понятие деформаций - к изменению расстояний между парами точек. Приведен пример построения модели первоначально изотропной геосреды, в которой используется данное описание.

The author discusses the deformation kinematics method using the concept of displacement of material planes in a medium. Displacements of planes can be described by two vector fields of displacement or, by way of alternative, by one tensor field which is a field of relative displacement of planes. This is an asymmetric tensor, and its components are uncorrelated by Saint-Venant’s compatibility conditions. This approach recovers an “equality” between the kinematic-based and force-based descriptions of deformation in a medium. The adopted notion of stresses relates to the forces that affect planes inside a body, and the notion of deformation relates to the change of distances between pairs of points. The article gives a case-study of modeling an initially isotropic geomedium using this approach.
АНАЛИЗ ЗНАЧИМОСТИ ПАРАМЕТРОВ И УСЛОВИЙ НАГРУЖЕНИЯ НА ФОРМИРОВАНИЕ СТРУКТУРЫ СИЛОВЫХ ЦЕПОЧЕК ПРИ ВЫПУСКЕ РАЗДРОБЛЕННОЙ РУДНОЙ МАССЫ
Authors: ЧЭНЬ Ц. , ЛЮ Ц. , ЛУН Э.
Published: October 2024

Выполнено моделирование процесса выпуска руды с одновременным магазинированием с использованием метода дискретных элементов на основе программного обеспечения PFC (Particle Flow Code). Методом ортогонального тестирования рассмотрены следующие ключевые факторы, влияющие на характер выпуска: толщина изоляционного слоя A , коэффициент трения на границе раздела изоляционного слоя B , коэффициент трения частиц между собой C , размер частиц D и коэффициент трения частиц о стенку E. Результаты ортогонального тестирования показали следующий порядок факторов по значимости: D>C>A>E>B . Наиболее оптимальная конфигурация факторов в рассмотренной численной модели составила: толщина изоляционного слоя 0.003 м; коэффициент трения на границе раздела изоляционного слоя 0.5; коэффициент трения частиц между собой 0.8; радиус частиц 0.008 м; коэффициент трения частиц о стенку 0.8.

The ore drawing procedure of the synchronous filling shrinkage mining method is simulated using PFC software. Isolation layer thickness A, isolation layer interface friction factor B, ore particle friction factor C , particle radius D and wall friction factor E are chosen as the five influencing factors of the orthogonal test, along with the characteristics of the orthogonal test and force chain parameters. The findings demonstrate that the primary and secondary order of each factor impact on the orthogonal test index is D>C>A>E>B. The best test configuration was A1 B2 C3 D3 E3, with the relevant factors being thickness 0.003 m, isolation layer interface friction factor 0.5, particle friction factor 0.8, particle radius 0.008 m and wall friction factor 0.8.
ВЛИЯНИЕ ПАРАМЕТРОВ РЕЗАНИЯ И РЕЖУЩЕГО ИНСТРУМЕНТА НА НАГРУЗКИ ПРИ РАЗРУШЕНИИ ТВЕРДЫХ ВКЛЮЧЕНИЙ В УГОЛЬНЫХ ПЛАСТАХ
Authors: ЛИННИК В.Ю. , ЛИННИК Ю.Н.
Published: October 2024

Выполнены экспериментальные исследования по установлению влияния параметров резания и режущего инструмента на нагрузки при разрушении твердых включений. Установлено, что при центральном прорезании твердых включений максимальные нагрузки на резце зависят от толщины и ширины среза, а также схемы резания и не зависят от скорости резания. Увеличение ширины режущей части резца способствует росту пиковых и среднепиковых сил резания и подачи, тогда как боковые нагрузки при резании твердых включений резцами с плоской передней гранью зависят лишь от толщины стружки. На величину пиковых усилий подачи существенно влияет форма режущей кромки резца, а на усилия резания - угол резания. Уменьшение угла клина передней грани резца приводит к снижению пиковых усилий резания и подачи, тогда как боковые силы возрастают.

The experimental research assessed the influence exerted by the parameters of cutting process and cutting tool on the loads in cutting hard inclusions in rocks. It is found the in central cutting of hard inclusions, the maximal loads on a cutting pick depend on the width and depth of a cut, and on the cutting pattern, and are independent of the cutting velocity. The increase in the width of the cutting point of a cutting pick contributes to an increase in the peak and average-peak forces of cutting and feed, while the lateral loads in cutting hard inclusions by cutting picks with a flat face depend only on the depth of cut. The peak feed forces essentially depend on the shape of the cutting point of a cutting pick, and the cutting force depend on the angle of cutting. The decrease in the wedge angle of the face of a cutting pick reduces the peak forces of cutting and feed, while the lateral loads increase.
ОСОБЕННОСТИ СОСТАВА И СВОЙСТВ ХВОСТОВ ОБОГАЩЕНИЯ ЛОПАРИТОВЫХ РУД ОБОГАТИТЕЛЬНОЙ ФАБРИКИ “УМБОЗЕРО”
Authors: КРАСАВЦЕВА Е.А. , МАКСИМОВА В.В.
Published: October 2024

Представлены результаты определения состава и свойств хвостов обогащения лопаритовых руд обогатительной фабрики “Умбозеро”, закрытой в 1999 г. В ходе исследования проведен отбор проб хвостов поверхностного слоя и с глубины методом “режущего кольца”. Исследованы инженерно-геологические характеристики, выполнен ситовой, химический, рентгенофазовый и радионуклидный анализы. Установлена неоднородность вещественного состава и свойств отходов обогащения. В минеральном составе хвостов преобладают нефелин и K, Na-полевые шпаты. Лопарит диагностирован методом рентгенофазового анализа в одной из четырех исследуемых областей хвостохранилища, с тенденцией к увеличению его содержания в тонкой фракции. Радионуклидный анализ определил радиево-ториевый характер радиоактивности исследуемых отходов обогащения.

The article reports the research of composition and properties of loparite concentration tailings at the Umbozero plant closed in 1999. During the research, samples of tailings were taken in the surface layer and at depth, using the method of cutting ring. The geological and engineering properties of the tailings were investigated, and the sizing, chemical, X-ray phase and radionuclide analyses were performed. The research revealed heterogeneity in material constitution and properties of the test tailings. The mineral composition of the tailings is dominated by nepheline, and by K and Na feldspars. Loparite is detected by the X-ray phase analysis at one of the four test sites of the tailings pond, and its content increases in the fine fraction. The analysis of radionuclides shows the presence of radium and thorium in the test concentration tailings.
ПОТЕНЦИАЛ ПОЛИМЕТАЛЛИЧЕСКИХ ХВОСТОХРАНИЛИЩ КАК ИСТОЧНИКА БАРИТОВОГО СЫРЬЯ
Authors: ШАВЕКИНА А.Ш. , ВОЛЫНКИН С.С. , БОНДАРЕНКО В.П. , БОРТНИКОВА С.Б. , ЮРКЕВИЧ Н.В.
Published: October 2024

Рассмотрены возможности использования хвостохранилищ Талмовские пески и Урской отвал Кемеровской области в качестве техногенного объекта для получения баритового сырья посредством добычи и переработки. Оценены минералого-геохимические параметры и типоморфные характеристики барита согласно морфологии, минеральным ассоциациям, содержанию, распределению по гранулометрическим фракциям. Проведены технологические исследования и получены баритовые концентраты из вещества хвостохранилищ методами гравитации и флотации, которые охарактеризованы на соответствие по содержанию барита для дальнейшего применения в качестве утяжелителей буровых растворов по ГОСТ 4682-84. Выполнена оценка потенциала хвостохранилищ Талмовские пески и Урской отвал применительно к извлечению барита.

The research focuses on usability of tailings from the Talmovskie Peski and Ursk dumps in the Kemerovo Region as a manmade source of barite after suitable recovery and processing. Mineralogical, geochemical and typomorphic characteristics of barite are assessed from morphology, mineral associations, content and grain size distribution. The technological studies are accomplished, and barite concentrates are obtained from the test tailings by gravity separation and flotation. The concentrates are assessed with respect to barite content with a view to using the concentrates as a weighting material as per the USSR State Standard GOST 4682-84. The barite recovery potential of tailings from the Talmovskie Peski and Ursk dumps is evaluated.
АНАЛИЗ ВОЗДУХОРАСПРЕДЕЛЕНИЯ В НАКЛОННОЙ ГОРНОЙ ВЫРАБОТКЕ ПРИ НАЛИЧИИ ИНТЕНСИВНОГО ИСТОЧНИКА ТЕПЛОВЫДЕЛЕНИЯ
Authors: ПОПОВ М.Д. , СЕМИН М.А. , ЛЕВИН Л.Ю.
Published: October 2024

Рассмотрено конвективное расслоение воздушных потоков в наклонной горной выработке в условиях наличия интенсивного источника тепловыделений. Методология исследования включала численное трехмерное моделирование нестационарных аэротермодинамических процессов в наклонной и примыкающей к ней горизонтальной горных выработках. Показаны три возможных сценария конвективного расслоения потоков в наклонной горной выработке в зависимости от мощности тепловыделений. Определена зависимость критической тепловой мощности источника нагрева от начальной депрессии и угла наклона горной выработки. Проанализирована зависимость перепада давления в наклонной выработке от массового расхода при разных мощностях тепловыделений по данным численного трехмерного моделирования, а также на одномерной сетевой модели. Описание подземных пожаров в горных выработках с помощью одномерных моделей требует привлечения эмпирических зависимостей аэродинамического сопротивления и средней плотности воздуха от расхода воздуха.

The authors analyze convection-induced stratification of air flows in an inclined drift with an intense heat emission source. The research methodology included 3D numerical modeling of nonstationary aero-thermodynamic processes in an inclined drift and in an adjoint horizontal drift. The article describes three possible scenarios of convection-induced air flow stratification in an inclined drift depending on heat emission intensity. The dependence of the critical heat rate of the heating source on the initial depression and incline of the drift is determined. The pressure difference-mass air flow relationship in the inclined drift is analyzed at different heat emission intensities using the 3D numerical model and a 1D network model. Description of underground mine fires using 1D models requires empirical relationships of air drag, average air density and air flow rate.
АЭРОДИНАМИЧЕСКИЕ ПРОЦЕССЫ В СВЕРХДЛИННОЙ УГОЛЬНОЙ ЛАВЕ ПРИ ИСПОЛЬЗОВАНИИ СТРУЙНОГО ВЕНТИЛЯТОРА НА ОЧИСТНОМ КОМБАЙНЕ
Authors: ПАВЛОВ С.А.
Published: October 2024

Приведены результаты исследования влияния работы струйного вентилятора, установленного на очистном комбайне, на изменение параметров аэродинамического сопротивления выемочного участка, концентрации метана и угольной пыли. Исследования проводились в программном комплексе Ansys Fluent, на основании натурных данных, полученных в угольных шахтах Кузбасса. Объектом исследования служила пылегазовоздушная атмосфера сверхдлинных угольных лав протяженностью 400 м с мощностью вынимаемого пласта 2.4 и 3.7 м. Выявлено, что применение струйного вентилятора способно снизить аэродинамическое сопротивление выемочного участка до 35 %, что позволяет увеличить на 24 % количество подаваемого в лаву воздуха без увеличения мощности на главных вентиляционных установках. Поток воздуха, исходящий из струйного вентилятора, способствует устранению застойных метановоздушных зон вблизи работающего комбайна и снижает концентрацию угольной пыли на рабочих местах машинистов на 13.8 - 36.7 %.

The articles describes the studies of influence exerted by operation of a jet fan installed on a shearer on air drag and on methane and coal dust concentrations in a longwall. The investigation used ANSYS Fluent and field data from coal mines in Kuzbass. The object of study was dust and gas/air mixtures in extra-long panels with a length of 400 m and at mineable coal seam thickness of 2.4 and 3.7 m. It is found that jet fans can decrease air drag in such longwalls by 35%, which enables decreasing the air feed in the longwall by 24% without increasing the main fan capacity. The air flow generated by a jet fan eliminates dead methane-air zones nearby an operating shearer and decreases coal dust concentration at work places of shearer’s operators by 13.8-36.7%.
Seismic performance analysis of wood-steel frame structures
Authors: Sun Panxu , Li Keguang , Sun Gangzhu
Published: October 2024

Wood and steel have different physical properties. By combining the two kinds of materials as bonded parallel beams, wood-steel frame structures can be prepared. This work considers the seismic performance of such engineering structures. Based on the Rayleigh damping model of substructures, the non-proportional damping coefficient is used to quantify the structural non-proportional damping characteristic of wood-steel frame structures. A complex mode superposition method is used to calculate seismic responses. Numerical cases showed that compared with the frame structure with upper steel and lower wood, the overall lateral performance is lower and the local lateral performance is higher for the frame structure with upper wood and lower steel. The overall lateral seismic design needs to be improved for the wood-steel frame structure with upper wood and lower steel. The local lateral seismic design needs be improved for the wood-steel frame structure with upper steel and lower wood.
Behavior of laminated timber portal frames reinforced with fiber-reinforced plastic laminates under cyclic lateral load
Authors: Song Yo-Jin , Baek Seong-Yeob , Kim Hyun-Woo , Hong Soon-Il
Published: October 2024

This study aimed to enhance the structural performance of a drift joint with a slotted-in steel plate using laminated timber made from small- to medium-diameter timbers. An analysis was conducted to compare and evaluate the structural performance and seismic behavior of laminated timber portal frames reinforced with fiber-reinforced plastic (FRP) laminates, such as glass fiber cloth (GFC), glass fiber reinforced plastic sheet (GS), and carbon-reinforced plastic sheet (CS), under low amplitude cyclic lateral loads, in comparison to unreinforced portal frames (UR). The reinforced portal frame, strengthened by FRP laminates, exhibited higher resistance to strength and stiffness strength degradation due to cyclic loading-induced degradation at low drift angles compared to the unreinforced frame affected by heterogeneous timber. The reinforced portal frame, particularly the GFC and GS, exhibited energy dissipation rates 32% and 17% higher than UR, respectively, making them the most effective in vibration damping. FRP laminates mitigated fiber direction cleavage from drift pin holes. The average maximum moment and average yield moment of the reinforced portal frame increased by 18% and 21%, respectively, due to the alleviation of joint failure. Finally, CS significantly affected the maximum moment, while GFC significantly influenced the yield moment.
Novel modalities for hair growth & skin repair
Authors: Sofra Xanya
Published: October 2024

Background/Objectives: Evaluate the efficacy and long-term results of established and novel treatment modalities on skin repair and hair growth. Examine the deleterious effects of inflammation in aging and disease. We present a thorough literature review on the reported and actual statistical significance of laser and radiofrequency studies that is often contradictory, on both skin repair and hair growth. Some RF and laser studies postulate short-term improvement on skin repair, and substantial results on hair health, but without following up to control for adverse side effects, effects reversal or reoccurrence or certain skin disorders such as pigmentation which generally reoccur following laser or RF treatments. A main issue pertaining to such technologies is the results of inflammation. Laser and RF companies claim reduction of inflammation. Yet, a large body of research demonstrates significant inflammation increase after trauma-based procedures. A diligent evaluation of other methods and techniques is also conducted based on research and clinical studies presented, with inflammation being the centrepiece. Methods: In our randomized, double-blind longitudinal clinical research, we followed 22 clinical cases treated with a novel resonance anti-inflammatory technology for up to 4 years. Results: All subjects evidenced irreversible skin repair and hair growth. Results on hair were slower to appear and ranged from two weeks to one month before observing the full effect. The number of treatments required for substantial repair depended on the chronicity and severity of skin condition, and the extent of hair loss, rather than age. More chronic, difficult cases required more treatments irrespective of whether the subject was younger or older. These results on age-independent skin repair and hair growth advocated for the importance of anti-inflammatory techniques to counterbalance immune insufficiency, age-accumulated oxidative stress, and disrupted cellular communications. Conclusions: Focus should be shifted from the immediacy of results to the long-term effects of the results with respect to evaluating different treatment modalities on skin repair and hair growth. Inflammation is one of the main reasons for both aging and disease. In assessing the efficacy of a technology, it is important to diligently look for evidence pertinent to the absence of inconspicuous, or insidiously forming inflammation following the procedure, a perspective that most published and unpublished clinical studies fail to consider, since they do not test for inflammatory interleukins or levels of the C-reactive protein that would evidence the presence of inflammation.
Is Bangladesh’s people aware of “diabetes mellitus: the disease of prosperity” health care management?
Authors: Mukta Umme Salma
Published: October 2024

Introduction: Diabetes mellitus is an increasing threat to the world, which is also considered a “disease of prosperity”. The manifest of demographic changes, cultural transition, modernization, and population aging, etc. make it a “developing countries problem”. The incidence of type 2 diabetes mellitus is increasing so rapidly and it is estimated by 2030 this number will almost double. Around 387 million people have diabetes which is equal to 8.3% people. It is projected that there will be a 42% increase in the number of individuals with diabetes, from 51 to 72 million in the developed countries and a 170% increase, from 84 to 228 million, in the developing countries. Diabetes mellitus is a chronic disease once thought to be uncommon in Bangladesh, but now it has emerged as an important public health problem. About 3.6 million people are affected throughout the country. In Bangladesh around 4% of adults aged 25 years or more have type 2 diabetes mellitus, and 80 lakh people in Bangladesh suffer from diabetes. It causes 6.4 percent of total deaths in the country. Awareness of diabetes is not up to the mark due to health education about diabetes, announcement, and an overall lack of awareness of the disease and its effectiveness makes it more complicated to manage. Objectives: This study aimed to assess the knowledge and awareness status on health care management of type 2 diabetes mellitus in Bangladesh. Methods: This is a cross-sectional study followed by descriptive methods and mixed methods in design among Dhaka and Manikgonj districts. Results: Findings reveal that a very significant relationship exists between compliances and complications. Compliances are influenced by various factors like sex, education, occupation, treatment facilities, etc. But who follow the proper compliances face fewer complications? Also, in addition to anti-diabetic medication and another method of compliance to an herbal method which was familiar to diabetic patients. Most compliance the respondents preferred are diet, exercise, weight control over the medication. Conclusion: Overall, a positive outcome was that the patients of type 2 diabetics who maintained proper compliance faced fewer complications than those who didn’t follow them properly.
The effect of self-regulation on job satisfaction of early childhood teacher: Focusing on the mediating effect of teacher-efficacy
Authors:   Research Institute for Early Childhood Education - Korea National University of Education, Cha Jungju , Mun Gayeong
Published: October 2024

This study investigated the mediating effect of teacher-efficacy between self-regulation and job satisfaction among of early childhood teacher. Data was collected from 298 early childhood teachers using questionnaires, and the results were analyzed using descriptive statistics, Pearson’s correlation analysis, multiple regression analysis, and bootstrapping analysis. The results of the study are as follows. First, there were positive correlations among self-regulation, teacher-efficacy, and job satisfaction of early childhood teachers. Second, self-regulation and teacher-efficacy among early childhood teachers significantly affected their job satisfaction. Third, teacher-efficacy mediated the relationship between self-regulation and job satisfaction, and its significance was verified. Based on these results, the study is meaningful because it provides fundamental information on how to strengthen teacher-efficacy by identifying the relationship between self-regulation and job satisfaction among early childhood teachers, and reveals the mediating role of teacher-efficacy in this relationship.
Draw-a-Person Test
Authors: Otoni Fernanda , Dos Santos Acácia A. Angeli , Javier Marin Rueda Fabian
Published: October 2024

The Draw-a-Person test is a screening instrument used to assess children’s non-verbal intelligence. In the assessment of children, brief criteria of DAP’s could be promising to identify possible learning difficulties. Therefore, our aim was to propose a reduced number of criteria to evaluate DAP. To do so, 1403 children aged from 6 to 10 years (M = 8.16; SD = 1.40) participated. Through the mirt package in the R Studio program, we proposed a 2-parameter logistic model, extracting 12 indicators that were able to predict 83% of non-verbal intelligence. In this correction proposal, we selected indicators that maintained easy, medium, and difficult levels, which allowed children’s performance to differentiate according to age. The results were positive, indicating that the proposal is promising for use in research, clinical practice, psychoeducation, and educational psychological assessments.
From wild to captive: Understanding the main nutritional diseases of sharks in public aquariums
Authors: Morel Margot , Gál János , Sós-Koroknai Viktória , Sós Endre , Csehó Lilian , Bali Krisztina , Hoitsy Márton
Published: October 2024

The establishment of a well-adapted and accurate feeding regimen is a fundamental determining factor in the maintenance of shark species in captivity. Replicating the natural diet in captivity is commonly accepted and recommended. Given the diverse nutritional composition of prey, supplementation may become necessary. The captive environment poses unique challenges, making sharks susceptible to an array of health issues, including numerous diseases. Mitigating these risks demands detailed husbandry practices, an appropriate physical environment and a balanced diet. Supplementation, encompassing vitamins and minerals, becomes imperative for the provision of essential nutrients. This complexity has rendered the formulation of an adapted feeding plan for aquarists exceptionally challenging. The scarcity of information in these species adds to the issue, mandating extrapolation from various shark groups and to species with analogous characteristics. This literature review concentrates predominantly on benthic and pelagic shark species prevalent in contemporary aquariums. The central argument posits that dietary choices in captivity rely on factors such as availability, quality and consistency of supply. The advocated approach highlights the importance of a balanced, diverse feeding that closely mirrors natural diets. It is then crucial to emphasize that these are general guidelines, and the specific dietary requisites may diverge between shark species. Collaborating with experts in marine biology, shark husbandry and veterinary care is imperative for the formulation and perpetuation of an adapted diet for captive sharks.
Prevalence of Total, Diagnosed, and Undiagnosed Diabetes in Adults: United States, August 2021–August 2023
Authors: Baumblatt Jane , Fryar Cheryl , Gu Qiuping , Ashman Jill
Published: October 2024

This report provides health data from the National Center for Health Statistics.
Total and High-Density Lipoprotein Cholesterol in Adults: United States, August 2021- August 2023
Authors: Baumblatt Jane , Carroll Margaret , Fryar Cheryl , Baumblatt Jane , Iniguez Marisol
Published: October 2024

This report provides health data from the National Center for Health Statistics.
Enrollment in High-Deductible Health Plans Among People Younger than Age 65 with Private Health Insurance: United States, 2019–2023
Authors: Cohen Robin , Briones Elizabeth
Published: October 2024

This report provides health data from the National Center for Health Statistics.
Prominence of curcumin in anticancer strategies and innovation in bioimaging
Authors: Sanattalab Ehsan
Published: October 2024

Curcumin (CUR), a natural polyphenol derived from the rhizomes of Curcuma longa (turmeric), has garnered significant attention in recent years for its multifaceted potential in anticancer therapy and bio-imaging applications. This review article comprehensively explores the diverse anticancer properties of CUR, encompassing its potent anti-inflammatory, antioxidant, and anti-proliferative effects, as well as its ability to induce apoptosis and inhibit angiogenesis, making it a promising candidate in the fight against cancer. In addition to its therapeutic potential, CUR's unique physicochemical properties have enabled its utility as a versatile imaging agent for various bio-imaging modalities, including fluorescence imaging, magnetic resonance imaging (MRI), and positron emission tomography (PET). We investigate the molecular mechanisms underlying CUR's bio-imaging capabilities and discuss its various applications in cancer diagnosis, monitoring treatment responses, and elucidating biological processes. This comprehensive review provides valuable insights into the dual role of CUR as an anticancer agent and a bio-imaging tool, elucidate its potential in the development of novel cancer therapies and diagnostic approaches. The amalgamation of CUR's bio-imaging and therapeutic properties suggests its future as a pivotal player in personalized medicine and precision oncology.
ANALYSIS OF THE STATE OF THE POULTRY INDUSTRY AND HIDDEN OPPORTUNITIES
Authors: Makarynska A. , Vorona N.
Published: October 2024

Today, both producers and consumers of fodders are aware that achieving high productivity of animals and poultry, as well as optimal quality of final products, is impossible without the use of complete and nutritionally balanced feed. Requirements for the quality of compound feeds continuously grow and change, as new, more productive animal breeds and poultry crosses appear. It is proved that the COVID-19 pandemic, the full-scale war in Ukraine, climate variability and the global economic crisis are seriously undermining efforts to fight hunger and improve food security and nutrition. In the countries of Europe and Central Asia, the number of people who face problems in accessing adequate nutrition, including quality and safe products, has increased by 25.5 million people. According to FAO estimates, by 2050 we will have to increase the production of food and animal protein, including by 60%, to provide food for the world's 9.3 billion people. It has been established that poultry products are the most common and available source of animal protein to meet the needs of the world's population. The dynamics of changes in the feed production volume in 2018-2023 according to the data of the annual Agri-Food Outlook are presented. The top 10 leading countries in the feed production in 2022 are listed. They consume 64% of the world's compound feed, and half of the world's compound feed consumption is concentrated in four countries (China, USA, Brazil and India). A comparative analysis of the structure of compound feed production by types of agricultural animals and poultry for 2021-2023 shows that there is a growth trend for almost all types. The production of compound feed for pigs has been negatively affected by ASF all over the world. The greatest growth is observed in the field of compound feed for pets. It has been proven that a third of consumers prefer poultry products due to their availability and quality. In Ukraine, the industry is developing rapidly even in the conditions of a full-scale war, personnel shortages, power outages, inflation and disruption of logistics chains. The volume of global poultry production from 2012 to 2023 is shown. It is constantly increasing, caused by the increase in demand for affordable and relatively cheap animal protein. As a result of the analysis of the dynamics of poultry meat production by country in 2022-2023, it was established that the USA remains the leader in the production of poultry meat in the world for many years. Brazil and China remain in second and third place. Brazil has the largest growth during the reporting period. High competition in the field of breeding of laying hens and broilers stimulates the development of niche industries, such as guinea fowl breeding. Guinea fowls are raised for meat, eggs and fluff. This can be a very profitable business, especially for small poultry farms, due to the speed of payback of small investments and the unpretentiousness of the bird
Renal denervation in secondary arterial hypertension therapy: clinical case
Authors: Orekhov A. Yu. , Karazhanova L. K. , Chinibaeva A. A. , Zhaksebergenova A. B.
Published: October 2024

Introduction. Renovascular hypertension is one of the most severe types of hypertension in terms of the choice of treatment strategy. Recent studies have not provided a clear answer to the question of which treatment approach (conservative or surgical) is most appropriate for these patients.

Brief description. The presented case describes a female patient with a longterm uncontrolled hypertension, whose examination revealed bilateral renal artery stenosis. Considering the debatable clinical effectiveness of revascularization of renal artery stenosis, the patient underwent distal renal artery denervation using multielectrode catheters. A decrease in blood pressure was shown. Follow-up of the patient demonstrated stable antihypertensive effect of the procedure, as well as its safety in case of impaired renal function.

Discussion. This clinical demonstrates the third way in the treatment of patients with renal arteries stenosis and resistant hypertension — renal sympathetic denervation. This method requires a separate controlled study with individuals with renal dysfunction, including renovascular origin.
Economic burden of pulmonary hypertension. Systematic review
Authors: Zakiev V. D. , Martynyuk T. V. , Kotovskaya Yu. V.
Published: October 2024

Aim. A systematic review of studies on pulmonary hypertension (PH) cost estimates.

Material and methods. A systematic literature search was performed for studies assessing the cost of PH published up to November 30, 2023. The search was carried out in the PubMed/MEDLINE, EMBACE databases for publications in English and in the RSCI database for articles in Russian according to inclusion and exclusion criteria.

Results. The systematic review included 13 studies. The mean direct costs per patient with PH after verification of the diagnosis per month ranged from 2023 to 9915 USD, while the median from 1141,5 to 8144 USD. Indirect costs were assessed in only 3 following studies: in Spain and USA, the mean indirect costs were 214 and 1226 USD per patient per month, respectively, while in Russia the median was 65 USD. The mean direct costs per patient with PH per month before diagnosis verification ranged from 1017 to 9723 USD. Indirect costs before diagnosis verification were assessed in only 1 study (median $102 per patient per month). After PH verification, in general, there was an increase in treatment costs with a decrease in other direct costs.

Conclusion. PH causes great socio-economic damage to society and healthcare system. A decrease in non-drug therapy costs after PH verification may indicate not only the clinical effectiveness of PH-specific therapy, but also its potential costeffectiveness with reduced costs.