bluuebunny/crossref_metadata_2025_split huggingface dataset:
Global Burden of Inflammatory Bowel Disease Among Children and Adolescents: A Comprehensive Analysis (1990–2019)
Authors: Chen Xuejie , Xiang Xin , Fan Xiaofei , Xia Weitong , Xiao Yi , Wang Sidan , Ye Shuyu , Kang Meng , Jing Fangmin , Wu Xing , Chen Yang 
Published: September 2024

ObjectiveWe summarize the global, regional, and national burden of inflammatory bowel disease (IBD) in children and adolescents from 1990 to 2019.MethodsBased on the Global Burden of Disease Study 2019, the data of IBD in children and adolescents were analyzed by sex, age, year, and location. Joinpoint analysis was applied to assess the temporal trend of the disease burden.ResultsFrom 1990 to 2019, the incidence of IBD in children and adolescents increased by 22.8%, from 20,897.42 to 25,658.55 cases, especially in high SDI region. During the same period, the DALY numbers decreased by 53.5%, from 243,081.06 to 113,119.86, with all SDI regions experiencing a clear drop in DALYs except high SDI regions. In 2019, early-onset IBD incidence and DALY numbers were reported at 2,053.52 (95% UI: 1,575.62 to 2,677.49) and 73,797.46 (95% UI: 43,655.86 to 105,998.63), respectively.ConclusionEarly-onset IBD in children and adolescents remains a significant global health concern. The disease burden has not improved in developed countries over the past 30 years, highlighting the need for targeted interventions.
The Aerodynamic Performance of a Novel Overlapping Octocopter in Hover
Authors: Lei Yao , Zhao Xiangzheng 
Published: September 2024

A novel octocopter with an overlapping rotor arrangement is proposed in this paper to increase the payload with a limited size. The aerodynamic performance was obtained by both experiments and numerical simulations with the rotor spacing ranging from 1.2 D to 2.0 D (L= 1.2 D, 1.4 D, 1.6 D, 1.8 D, 2.0 D). Also, the aerodynamic parameter was evaluated by the thrust, power consumption, thrust coefficient, power coefficient, and figure of merit (FM) in hover. Compared with a traditional co-axial octocopter, the results indicated that the overlapping octocopter at L= 1.8 D presented an increasing thrust up to 15.98%, and the FM increment was up to 6%. Additionally, the streamline distribution showed that the symmetry of the vortex movement in the downwash flow for the overlapping rotors will offset the rotor interference with an increase in thrust. Meanwhile, the vortex deformation resulting from the induced velocity from the upper rotor also led to an increase in power consumption. Finally, the optimal aerodynamic performance of the overlapping octocopter was obtained with a rotor spacing of L= 1.8 D at 1800 RPM.
Ferrocene-modified resorcinol-formaldehyde aerogels
Authors: Бровко О.С. , Ивахнов А.Д. , Жильцов Д.В. , Бойцова Т.А. 
Published: September 2024

Разработан эффективный метод синтеза резорцин-формальдегидных аэрогелей гибридного строения со встроенными в их полимерную структуру ферроценовыми фрагментами-субъединицами. При формировании гелей, предшествующих получению аэрогелей, впервые использован диоксан как основной реакционный растворитель. Превращение гелей в аэрогели проведено с использованием СК-СО2. Образцы аэрогелей охарактеризованы методами мессбауэровской спектроскопии, адсорбции азота и атомно-абсорбционной спектроскопии, определена плотность материалов. Содержание железа в полученных аэрогелях находится в пределах 1,7—11,0 мас. % (или 5,6—36,3 мас. % ферроценовых звеньев). Металлоценовые субъединицы присутствуют в аэрогелях параллельно в двух валентно-окислительных состояниях: ферроцена и ферроцения.
An efficient method for the synthesis of hybrid resorcinol-formaldehyde aerogels with ferrocene subunit fragments embedded in their polymer structure has been developed. In the process of gel formation preceding the production of aerogels, dioxane was used for the first time as the main reaction solvent. The conversion of gels into aerogels was carried out using SC-CO2). Aerogel samples were characterized in detail by Mossbauer spectroscopy, nitrogen adsorption, and atomic absorption spectroscopy, and the density of materials was determined. The iron content in the resulting aerogels varies in the range of 1.5—11 % by weight of iron (or 5.3—35 % by weight of ferrocene units). Metallocene subunits are present in aerogels in two valence-oxidative states: ferrocene and ferrocenium.
Evaluation of the dependence of the polyphenolic composition and the activity of acetylcholinesterase inhibition of extracts of japanese sophora buds (SOPHORA JAPONICA) on the extraction method
Authors: Хизриева С.С. , Борисенко С.Н. , Максименко Е.В. , Жаркова Г.В. , Минкин В.И. , Борисенко Н.И. 
Published: September 2024

Проведена экстракция бутонов софоры японской (sophora japonica) (БСЯ) с использованием среды субкритической воды (СБВ) в пределах температуры 120—220°С, а также традиционным водно-этанольным методом. Оценка полифенольного состава экстрактов и активности ингибирования ацетилхолинэстеразы (АХЭ) для продуктов, выделенных различными методами, показала, что СБВ-экстракт, полученный при температуре 220 °С, демонстрирует наибольшие величины по сумме полифенолов и по сумме флавоноилов, как в сравнении с экстрактом, полученным традиционным способом, так и с СБВ-экстрактами, выделенными при более низких температурах. Среди изученных продуктов СБВ-экстракт (температура 220°С) проявляет самую высокую активность по ингибированию АХЭ, что указывает на определяющую роль суммы полифенолов в составе экстрактов БСЯ.
The extraction of Japanese sophora buds (Sophora japonica) (BS) was carried out using a subcritical water medium (SBW) within a temperature of 120—220°C, as well as by the traditional water-ethanol method. Evaluation of the polyphenolic composition of extracts and the activity of acetylcholinesterase (AChE) inhibition for products isolated by various methods showed that the SBW extract obtained at a temperature of 220°C demonstrates the highest values in terms of the sum of polyphenols and the sum of flavonoids, both in comparison with the extract obtained by the traditional method and with SBW extracts, isolated at lower temperatures. At the same time, among the studied products, SBW extract (temperature 220°C) shows the highest activity in inhibiting AHE, which indicates the determining role of the sum of polyphenols in the composition of BS extracts.
Micronization of levofloxacin hemihydrate using supercritical trifluoromethane
Authors: Антонов Е.Н. , Иванова А.Г. , Кротова Л.И. , Мишаков Г.В. , Попов В.К. 
Published: September 2024

Исследована микронизация фармацевтической субстанции левофлоксацина полугидрата (ЛФЦ) методом RESS c трифторметаном (СНЕ3) в качестве полярноuо сверхкритического растворителя. Сканирующей электронной микроскопией показано, что при температуре СНЕ3, равной 50°С, частицы микронизированного ЛФЦ имеют вид микрогранул субмикронного размера. При температуре 100 °С частицы приобретают форму тонких (менее 0,1 мкм) продолговатых пластинок с закругленными краями. При этой температуре увеличение давления СНЕ3 от 20 МПа до 35 МПа приводит к росту среднего размера частиц от 1 до 2 мкм соответственно. Рентгенофазовый анализ образцов, полученных при температуре 50 °С, установил идентичность исходной и микронизированной субстанции ЛФЦ, соответствующих структуре левофлоксацина полугидрата - С36Н40F2N6O8⋅H2O. Повышение температуры процесса до 100 °С приводит к появлению в составе микронизированного ЛФЦ одной из его псевдополиморфных форм — левофлоксацина моногидрата С18Н20F2N3O4⋅H2O
Micronization of levofloxacin hemihydate drug substance (LFC) by RESS using trifluoromethane (CHF3) as a polar supercritical solvent was investigated. By scanning electron microscopy, it was shown that at CHF3 temperature of 50°C, micronized LFC particles have the form of submicron-sized microbeads. At a temperature of 100°C, the particles take the form of thin (less than 0.1 microns) elongated plates with rounded edges. At this temperature, an increase in CHF3 pressure from 20 MPa to 35 MPa increases the average particle size of these particles from 1 to 2 um, respectively. X-ray phase analysis of samples obtained at 50 °C showed the identity of the original and micronized LFC substance corresponding to the structure of levofloxacin hemihydrate — С36Н40F2N6O8⋅H2O. At the same time, it was shown that an increase in the process temperature to 100°C leads to the appearance of one of its polymorphic forms, levofloxacin monohydrate С18Н20F2N3O4⋅H2O in the micronized LFC
Mitigasi Bencana pada Area Rentan Banjir di Kabupaten Dharmasraya
Authors: Ismayani Nina , Putri Desi Eka , Febrianto Hary , Sary Ayu Kurnia 
Published: September 2024

Based on the RTRW of Dharmasraya Regency, the hydrological aspects reveal numerous river basins and relatively gentle slopes, leading to frequent flooding during the rainy season. This study aims to identify flood vulnerability levels in Dharmasraya Regency and develop effective mitigation strategies. Using purposive sampling, data were analyzed descriptively and quantitatively through Overlay and Scoring techniques, categorizing flood vulnerability into three levels: slightly vulnerable (16,037.18 ha), vulnerable (68,982.47 ha), and highly vulnerable (168,920.24 ha). The proposed mitigation strategies include structural approaches such as constructing embankments and evacuation routes, and non-structural approaches like public awareness campaigns and disaster management training. This research contributes to developing more adaptive and context-specific disaster mitigation methods for regions with similar hydrological and topographical characteristics, offering a broader application of mitigation approaches in regional contexts. The findings enrich the literature on natural disaster mitigation in flood-prone areas and guide stakeholders in reducing flood risk in Dharmasraya Regency. AbstrakBerdasarkan RTRW Kabupaten Dharmasraya, aspek hidrologi menunjukkan banyak daerah aliran sungai dan kemiringan landai, menyebabkan banjir sering terjadi selama musim hujan. Penelitian ini bertujuan mengidentifikasi tingkat kerentanan banjir di Kabupaten Dharmasraya dan mengembangkan strategi mitigasi yang efektif. Dengan metode purposive sampling, data dianalisis secara deskriptif kuantitatif menggunakan teknik Overlay dan Skoring, memetakan kerentanan banjir ke dalam tiga kategori: agak rentan (16.037,18 ha), rentan (68.982,47 ha), dan sangat rentan (168.920,24 ha). Strategi mitigasi meliputi pendekatan struktural, seperti pembangunan tanggul dan jalur evakuasi, serta pendekatan non-struktural, seperti penyuluhan dan pelatihan pengelolaan bencana banjir. Penelitian ini berkontribusi pada pengembangan metode mitigasi bencana yang lebih adaptif dan relevan untuk wilayah dengan karakteristik hidrologi dan topografi serupa, serta menawarkan pendekatan mitigasi yang dapat diterapkan secara luas dalam konteks regional. Temuan ini memperkaya literatur tentang mitigasi bencana alam di daerah rawan banjir dan memberikan panduan bagi pemangku kepentingan dalam mengurangi risiko banjir di Kabupaten Dharmasraya.
COMPONDO A ARENA POLÍTICA DE TURISMO A PARTIR DO TERMINAL MARÍTIMO DE PASSAGEIROS DE NATAL – RN
Authors: Silva Júnior Francisco Xavier da , Nóbrega Wilker Ricardo de Mendonça 
Published: September 2024

A utilização do turismo enquanto ferramenta de reavivamento de centros históricos tem se tornado uma alternativa para as capitais brasileiras. Dentre os equipamentos disponíveis para impulsionamento do turismo nos centros históricos, os portos emergiram como alternativa as novas demandas por possuírem ligações históricas com as cidades. Com a Copa FIFA 2014, as cidades de Natal, Salvador, Fortaleza e Recife receberam a implantação dos Terminais Marítimos de Passageiros (TMPs), em seus portos. Os TMPs surgiram para proporcionar uma nova dinâmica ao turismo e centros históricos, abrangendo para além do trânsito de passageiros. O foco dessa análise centra-se no bairro da Ribeira e em específico o TMP do Porto de Natal. Assim, o objetivo desta pesquisa foi compreender o lugar do turismo na constituição da(s) arena(s) política(s) definida(s) para construção e operacionalidade do TMP do Porto de Natal, considerando sua conexão com o bairro da Ribeira. A técnica de análise utilizada foi a aplicação da teoria de Offe (1981, 1984a, 1984b). Como resultado, entendeu-se que é necessário transcender o entendimento de turismo por parte do poder público, devendo encará-lo como um fenômeno complexo e dinâmico que abarca diversos agentes no processo de planejamento e execução. Bem como, os agentes que foram envolvidos nas arenas do TMP encontraram-se aleatórios no campo, com poucas conexões, porém com ideologias aproximadas. Concluiu-se que, com impacto do processo de desvalia do bairro da Ribeira, se averiguou que o TMP se encontra isolado na dinâmica do bairro, enfraquecendo a retomada da relação porto-cidade a partir do turismo.
Sosialisasi Literasi Keuangan Dan CBP Rupiah Bagi Siswa Sekolah Dasar Di Kabupaten Simalungun
Authors: Damanik Darwin , Nadila Erfiyana  , Simanjuntak Roma , Simanjuntak Melda , Tarigan Haney Er , Putri Ayu Mai Evi  , Marbun Rully 
Published: September 2024

Pendidikan literasi keuangan pada anak sangat diperlukan untuk mendidik anak agar sadar dan mengerti bagaimana mengelola keuangan secara bijak dan sesuai kebutuhan. Tujuan dari kegiatan ini adalah mensosialisasikan literasi keuangan dan CBP Rupiah kepada siswa sekolah dasar di Kabupaten Simalungun khususnya di SDN 096135 Rambung Merah Kecamatan Siantar Kabupaten Simalungun. Metode pelaksanaannya dilakukan dengan berinteraksi langsung dengan siswa di kelas melalui ceramah, tanya jawab, dan tatap muka. Hasil dari kegiatan ini adalah peserta dari SDN 096135 Rambung Merah dapat memahami dengan baik tentang literasi keuangan dan CBP Rupiah dan kegiatan ini perlu dilakukan secara berkelanjutan oleh perguruan tinggi dan pemerintah di Kabupaten Simalungun agar tingkat literasi keuangan dan CBP Rupiah siswa dapat meningkat, karena pendidikan literasi keuangan harus diberikan sedini mungkin kepada anak, terutama anak usia pra sekolah dan sekolah dasar
Laboratório de Ensino de Matemática: formação continuada de professores de Matemática no sertão pernambucano
Authors: Eugenio Robson da Silva , Lorenzato Sergio 
Published: September 2024

Este artigo apresenta aspectos de um estudo finalizado de pós-doutorado em Educação Matemática sobre a compreensão e a utilização do laboratório de ensino de matemática por professores de matemática do sertão pernambucano. Foram realizados quatro encontros de formação continuada de forma presencial, os quais foram registrados por áudio e contaram com a participação de 95 professores dos anos finais do Ensino Fundamental. No primeiro encontro foi aplicado um questionário individual aos professores, com o objetivo de caracterizar esse grupo quanto aos aspectos do estudo proposto. Os resultados indicam que os professores tinham uma compreensão elementar sobre o que é o laboratório de ensino de Matemática, concebendo-o como uma sala de depósito de materiais industrializados e comprados pelas respectivas escolas. Esta perspectiva aponta para uma formação lacunar sobre o que é um laboratório de ensino de Matemática e confirma uma demanda de formação inicial e continuada para o uso dele.
OPTIMALISASI PERAN SERTA MASYARAKAT DALAM MENDUKUNG POTENSI FASILITAS WILAYAH KECAMATAN BELAKANG PADANG KOTA BATAM
Authors: Leonar Rowardi  , Muda Andrian Oktama  , Yuanita FD Sidabutar  , Alpano Priyandes  
Published: September 2024

Kota Batam memiliki potensi yang luar biasa dan berkelanjutan dengan meningkatkan tampilan wisata agar menarik kunjungan wisatawan yang datang. Sebagai kota pesisir dengan pantai yang indah, posisi kota batam yang strategis berada di jalur perdagangan internasional di selat Malaka berbatasan langsung dengan Singapura. Belakang Padang mempunyai potensi wilayah yang terus dipertahankan dan dikembangkan. Peran masyarakat dalam pembangunan daerah yang berkelanjutan adalah sebagai subjek dan objek. Masyarakat yang berkualitas menjadikan pengolahan dan pengelolaan potensi sumber daya dapat dilakukan dengan baik. Dampak positif dari pengembangan potensi wilayah disuatu daerah yaitu dapat memperluas lapangan kerja, meningkatkan pendapatan, terpeliharanya kebudayaan setempat dan dikenalnya kebudayaan setempat oleh wisatawan.
Penelitian ini bertujuan untuk menganalisis potensi wilayah di Kecamatan Belakang Padang dan merumuskan strategi pengembangan kawasan dalam mengoptimalisasi potensi wilayah di Kecamatan ini. Penelitian ini menggunakan metode analisa deskriptif. Peneliti menggunakan teknik analisa SWOT.
Analisa SWOT merupakan suatu teknik analisa yang digunakan untuk menyusun suatu strategi diperoleh dengan cara menganalisa faktor internal dan eksternal untuk mengetahui Strength, Weakness, Opportunity dan Threat yang dimiliki oleh lokasi studi. Berdasarkan hasil analisis SWOT, peran serta masyarakat dalam pengoptimalisasi potensi wilayah adalah mengoptimalisasi potensi wilayah tersebut yaitu potensi wisata kuliner, perdagangan, sosial budaya masyarakat dan ruang terbuka. Itu bisa dilakukan dengan mendukung pengembangan dan mempromosikan wisata kuliner melalui pemanfaatan sosial media dan brosur wisata, menambah jumlah armada transportasi laut dan perbaikan pasar induk, menjaga dan melestarikan lingkungan sosial budaya dengan ikut serta dalam mendukung aktifitas budaya, ruang terbuka yang ada dirancang dan dikelola dengan baik dapat memberikan manfaat bagi masyarakat.
Modeling Compact Object Mergers GW190814 and GW200210 and Other Self-bound Compact Stars with Dark Matter Induced by Gravitational Decoupling and Its Significance to the Mass Gap
Authors: Maurya S. K. , Errehymy Abdelghani , Newton Singh Ksh. , Aziz Abdul , Hansraj Sudan , Ray Saibal 
Published: September 2024

Abstract
We present a rigorous study of compact objects within f(Q) gravity where electrical fields and dark matter are studied and provide novel mass–radius relations with models falling in the mass gap of the events GW190814 and GW200210. After formulating the basic equations and finding their relevant solutions, we impose the boundary conditions on the system under treatment. The decoupled solution for the strange stellar model with the dark matter density profile is obtained. The distribution patterns of the effective energy density and the radial as well as the tangential pressure and anisotropy in the system are intensively examined. The stability properties of the stellar configuration and the influence of dark matter are studied. The recent observations of supermassive compact star candidates such as PSR J1614–2230 and PSR J0952–0607 with observed masses greater than or equal to 2 M
⊙ have been employed in our study. Interestingly, the present study predicts the constraints on mass–radius measurements of the observed stars satisfying the equation of state based on the MIT bag model and employing the condition of mimicking, i.e., ρ

θ
=

χ

1

ρ

PI

in f(Q) gravity. Our graphical results exhibit that for a particular M–R curve with fixed values of the parameters, neutron stars having mass less than M
max exist with larger radii within the context of the f(Q) formalism.
The Most Sensitive Radio Recombination Line Measurements Ever Made of the Galactic Warm Ionized Medium
Authors: Bania T. M. , Balser Dana S. , Wenger Trey V. , Ireland Spencer J. , Anderson L. D. , Luisi Matteo 
Published: September 2024

Abstract
Diffuse ionized gas pervades the disk of the Milky Way. We detect extremely faint emission from this Galactic warm ionized medium (WIM) using the Green Bank Telescope to make radio recombination line (RRL) observations toward two Milky Way sight lines: G20, (ℓ, b) = (20°, 0°), and G45, (ℓ, b) = (45°, 0°). We stack 18 consecutive Hnα transitions between 4.3 and 7.1 GHz to derive 〈Hnα〉 spectra that are sensitive to RRL emission from plasmas with emission measures EM ≳ 10 cm−6 pc. Each sight line has two Gaussian-shaped spectral components with emission measures that range between ∼100 and ∼300 cm−6 pc. Because there is no detectable RRL emission at negative LSR velocities, the emitting plasma must be located interior to the solar orbit. The G20 and G45 emission measures imply rms densities of 0.15 and 0.18 cm−3, respectively, if these sight lines are filled with homogeneous plasma. The observed 〈Hnβ〉/〈Hnα〉 line ratios are consistent with LTE excitation for the strongest components. The high-velocity component of G20 has a narrow line width, 13.5 km s−1, that sets an upper limit of ≲4000 K for the plasma electron temperature. This is inconsistent with the ansatz of a canonically pervasive, low-density, ∼10,000 K WIM plasma.
A Comprehensive Analysis of Insight-HXMT Gamma-Ray Burst Data. I. Power Density Spectrum
Authors: Zhou Zi-Min , Wang Xiang-Gao , Liang En-Wei , Cao Jia-Xin , Liu Hui-Ya , Li Cheng-Kui , Li Bing , Lin Da-Bin , Zheng Tian-Ci , Lu Rui-Jing , Xiong Shao-Lin , Wang Ling-Jun , Song Li-Ming , Zhang Shuang-Nan 
Published: September 2024

Abstract
The power density spectrum (PDS) is a powerful tool to study light curves of gamma-ray bursts (GRBs). We show the average PDS and individual PDS analysis with GRB data from the Hard X-ray Modulation Telescope (also named Insight-HXMT). The values of the power-law index of the average PDS (

α

P

¯

) for long GRBs (LGRBs) vary from 1.58 to 1.29 (for 100–245, 245–600, and 600–2000 keV). The Insight-HXMT data allow us to extend the energy of the LGRBs up to 2000 keV, and a relation between

α

P

¯

and energy E is obtained:

α

P

¯

∝

E

−
0.09

(8–2000 keV). We first systematically investigate the average PDS and individual PDSs for short GRBs (SGRBs), and obtain

α

P

¯

∝

E

−
0.07

(8–1000 keV), where the values of

α

P

¯

vary from 1.86 to 1.34. The distribution of the power-law index of an individual PDS (α) of an SGRB is consistent with that of an LGRB, and the α value for the group with a dominant timescale (the bent power law) is higher than that for the group with no dominant timescale (the single power law). Both LGRBs and SGRBs show similar α and

α

P

¯

, which indicates that they may be the result of similar stochastic processes. Typical values of the dominant timescale τ for LGRBs and SGRBs are 1.58 s and 0.02 s, respectively. It seems that τ varies in proportion to the duration of GRBs T
90, with a relation

τ
∝

T

90

0.86

. The GRB light curve may result from superposing a number of pulses with different timescales. No periodic or quasi-periodic signal above the 3σ significance threshold is found in our sample.
Protostellar Disk Formation Regimes: Angular Momentum Conservation versus Magnetic Braking
Authors: Yen Hsi-Wei , Lee Yueh-Ning 
Published: September 2024

Abstract
Protostellar disks around young protostars exhibit diverse properties, with their radii ranging from less than ten to several hundred astronomical units. To investigate the mechanisms shaping this disk radius distribution, we compiled a sample of 27 Class 0 and I single protostars with resolved disks and dynamically determined protostellar masses from the literature. Additionally, we derived the radial profile of the rotational-to-gravitational-energy ratio in dense cores from the observed specific angular momentum profiles in the literature. Using these observed protostellar masses and rotational energy profile, we computed theoretical disk radii from the hydrodynamic and nonideal magnetohydrodynamic (MHD) models in Y.-N. Lee et al. ﻿and generated synthetic samples to compare with the observations. In our theoretical model, the disk radii are determined by hydrodynamics when the central protostar+disk mass is low. After the protostars and disks grow and exceed certain masses, the disk radii become regulated by magnetic braking and nonideal MHD effects. The synthetic disk radius distribution from this model matches well with the observations. This result suggests that hydrodynamics and nonideal MHD can be dominant in different mass regimes (or evolutionary stages), depending on the rotational energy and protostar+disk mass. This model naturally explains the rarity of large (>100 au) disks and the presence of very small (<10 au) disks. It also predicts that the majority of protostellar disks have radii of a few tens of astronomical units, as observed.