bluuebunny/crossref_metadata_2025_split huggingface dataset:
Quasi-orthotropic deformation theory of masonry plasticity in plane stress state
Authors: Pozdeev M. L. , Likhacheva S. Yu. , Smagin I. V. 
Published: February 2025

Introduction. The deformation theory of plasticity (deformation theory) can be widely applied in physically nonlinear calculations under simple or converging to simple loadings. In particular, for the analysis of the seismic resistance of masonry buildings, the deformation theory can be utilized within the framework of the nonlinear static method. Compared to flow type theories, deformation theories enable a greater number of failure mechanisms to be implemented by defining a complex combined strength figure of the material without encountering issues with singularities in the limiting loading surfaces.Aim. To develop a variant of the deformation theory of plasticity for masonry in a plane stress state, taking into account the orthotropy of strength properties.Materials and methods. The study involved an analysis of known deformation theories. The physical relationships were formulated in matrix form for use in computer calculations. The comparison of the mathematical model with experimental results was performed using regression analysis methods.Results. A deformation theory for masonry is described as a quasi-orthotropic material without considering deformation anisotropy. The authors proposed a strength figure for masonry that accounts for the orthotropy of strength properties and depends on the angle between the principal axes and the axes of orthotropy. A methodology for transforming two basic deformation curves for masonry is outlined.Conclusions. The presented quasi-orthotropic deformation model for masonry can be utilized in finite element analysis programs and in developing plugins for existing software systems, particularly for the SCAD Office software suite with a deformation plasticity theory model.
Experimental studies on the strength of reinforced concrete elements with lap joints of compressed reinforcement in a single design section under axial compression
Authors: Zenin S. A. , Kudyakov K. L. , Sychev K. D. 
Published: February 2025

Introduction. Current Russian standards impose stricter requirements on the overlap length of reinforcing bars in lap joints executed within a single section of the structure compared to staggered lap joints. Due to insufficient research on this issue concerning compressed reinforcement, these requirements lack comprehensive justification and have been adopted with some caution, which leads to increased reinforcement consumption. This implies investigating various possible design solutions for lap joints of reinforcement bars made in a single design section and experimental verifying of their impact on the strength of compressed reinforced concrete elements under static loads.Aim. To conduct experimental studies on the load-bearing capacity of compressed reinforced concrete elements with different variants of lap joints of reinforcement located in a single design section.Materials and methods. Experimental studies were conducted by testing reinforced concrete elements subjected to centrally applied static compressive loads. The studies were carried out in accordance with the provisions of current standards.Results. Experimental data were obtained regarding the strength of reinforced concrete elements with various types of lap joints of reinforcement located in a single design section under axial compression.Conclusions. Experimental studies have determined the failure loads and the failure patterns in the test samples. Failure for all test samples occurred outside the lap joint. Depending on the design solution of the sample, the values of failure loads for the studied samples with lap joints of reinforcement were lower by an average of 4 % than for samples without joints or higher by 2–3 %.
The Effect Of Physical Facilities, Location Strategy, And Product Innovation On Culinary Tourist Satisfaction
Authors: Ghifari Muhammad Arya , Sujana Sujana 
Published: February 2025

This study aims to 1) To determine the effect of physical facilities on customer satisfaction of Gacoan Noodles in Bogor City. 2) To determine the effect of Location Strategicity on customer satisfaction of Mie Gacoan in Bogor City. 3) To determine the effect of product innovation on customer satisfaction of Mie Gacoan Bogor City. Physical facilities are equipment provided by the company to support the activities carried out by consumers. A strategic location or close to schools, offices, universities can make it easier for consumers to come to the location of a business. Product innovation is the development of a product while maintaining product quality. Customer satisfaction is the feeling that arises after comparing it with their expectations. Data collection was collected as many as 220 respondents. Data processing Analysis of Moment Structure (AMOS) with the Structural Equation Modeling (SEM) analysis method. The results of this study are Physical Facilities have no significant effect on Customer Satisfaction, Location has a significant effect on Customer Satisfaction, Product innovation has no significant effect on Customer Satisfaction. The physical facilities provided are not good enough, the Location Strategicity is good enough for consumers, and product innovation is not good enough.

Keywords: Physical Facilities, Location Strategicity , Product Innovation, Consumer Satisfaction
Mind the Gap. II. The Near-UV Fluxes of M Dwarfs
Authors: Jao 饒 Wei-Chun 惟君 , Youngblood Allison 
Published: February 2025

Abstract
Because of the continuous variations in mass, metallicity, and opacity, dwarf stars are distributed along the main sequence on optical and near-IR color–magnitude diagrams following a smooth polynomial. In this study, utilizing a catalog of crossmatched Galaxy Evolution Explorer (GALEX) and Gaia sources, we identify two distinct populations of M dwarfs in the near-UV (NUV) band on the M
NUV versus M

G
diagram. We also reveal a pronounced increase in the number of stars exhibiting high NUV fluxes near the spectral type M2 or M

G
~ 9.4, coinciding with the H2 formation in the atmosphere that improves the energy transportation at the surface. This suggests that certain yet-to-be-understood stellar mechanisms drive heightened activity in the NUV band around the effective temperatures of M2 and later types of M dwarfs. Through examination of archival Hubble Space Telescope spectra, we show that Fe ii line forests at ~2400 Å and 2800 Å dominate the spectral features in the GALEX NUV bandpass, contributing to the observed excess fluxes at a given mass between the two populations. Additionally, our investigation indicates that fast rotators and young stars likely increase in brightness in the NUV band, but not all stars with bright NUV fluxes are fast rotators or young stars.
Modeling the Impact of Moderate External UV Irradiation on Disk Chemistry
Authors: Gross Rachel E. , Cleeves L. Ilsedore 
Published: February 2025

Abstract
The chemistry within a protoplanetary disk is greatly affected by external radiation from the local stellar environment. Previous work has focused on extreme radiation fields, representative of the center of something like the Orion Nebula Cluster. However, even in such environments, many disks exist at the edges of a cluster where the lower stellar density leads to radiation fields weaker by orders of magnitude compared to the center. We present new chemical models of a T Tauri disk in the presence of a moderately increased interstellar radiation field (ISRF). Such an environment has a background UV strength 10–100 times higher than the galactic average ISRF. Moderate radiation fields are among the most prevalent disk-harboring environments and have interesting implications for the chemistry of the outer disk radii. We find that the external UV radiation creates an outer ionization front that impacts the cold disk chemistry to varying degrees, depending on outer disk structure. Certain molecules like C+, N2H+, C, and CS are more strongly impacted by the ISRF in their abundance, column density, and observable emission. Other abundant species like HCO+ and CO are less affected by the external UV flux in the outer disk under such moderate UV conditions. Further, we demonstrate that the chemistry occurring in the inner tens of au is relatively unchanged, which suggests that even in moderately externally irradiated disks the inner disk chemistry may be more similar to isolated disks like those in, e.g., the Taurus and Lupus star-forming regions.
Flux-rope-mediated Turbulent Magnetic Reconnection
Authors: Russell Alexander J. B. 
Published: February 2025

Abstract
We present a new model of magnetic reconnection in the presence of turbulence. The new model differs from the Lazarian–Vishniac turbulent reconnection theory by emphasizing the role of locally coherent magnetic structures, whose existence is shown to be permitted by the properties of magnetic field line separation in turbulent plasma. Local coherence allows storage of magnetic helicity inside the reconnection layer in the form of locally coherent twisted flux ropes. We then introduce the “Alfvén horizon” to explain why the global reconnection rate can be governed by locally coherent magnetic field structure instead of by field line wandering, formally extending to 3D the principle that reconnection can be made fast by fragmentation of the global current layer. Coherence is shown to dominate over field line dispersion if the anisotropy of the turbulence at the perpendicular scale matching the thickness of a marginally stable current layer exceeds the aspect ratio of the current layer. Finally, we conjecture that turbulence generated within the reconnection layer may produce a critically balanced state that maintains the system in the flux-rope-mediated regime. The new model successfully accounts for the major features of 3D numerical simulations of self-generated turbulent reconnection, including reconnection rates of 0.01 in resistive MHD and 0.1 with collisionless physics.
Combination therapy strategy based on selective internal radiation therapy as conversion therapy for inoperable giant hepatocellular carcinoma: A case report
Authors: Hao Ming-Zhi , Lin Hai-Lan , Hu Yu-Bin , Chen Qi-Zhong , Chen Zhang-Xian , Qiu Lin-Bin , Lin Duan-Yu , Zhang Hui , Zheng De-Chun , Fang Zhu-Ting , Liu Jing-Feng 
Published: February 2025

BACKGROUND
Hepatocellular carcinoma (HCC) has become a growing health concern globally. Microvascular invasion and high tumor burden are key factors limiting the curative effect of selective internal radiation therapy (SIRT).
CASE SUMMARY
This case study reports a 49-year-old woman who was diagnosed with China Liver Cancer Staging (CNLC) IIIa HCC and > 15 cm tumor diameter. Initially, due to insufficient future liver remnant and vascular invasion, the tumor was unresectable; however, radical hepatectomy was performed after successful conversion therapy with SIRT using yttrium-90 (90Y) resin microspheres followed by hepatic arterial infusion chemotherapy (HAIC) with tyrosine kinase inhibitor (TKI) and anti-programmed death-1 (PD-1) antibody. SIRT using 90Y resin microspheres was given by the right hepatic artery and chemoembolization was simultaneously performed in the tumor’s feeding vessels from the right diaphragmatic artery. HAIC was followed every three weeks with lenvatinib and tislelizumab. At 4 months post-SIRT, the tumor was downstaged to CNLC Ib and the patient successfully underwent hepatectomy. The histopathological examination of the resected specimen showed extensive necrosis.
CONCLUSION
This case study provides evidence for an integrated treatment strategy combining SIRT and HAIC with TKI and anti-PD-1 antibodies for patients with large HCC and microvascular invasion. Further confirmatory trials are required in the future.
Heterochronic gastric adenosquamous carcinoma combined with colonic adenoma: A case report
Authors: Liu Gui-Jiang , Long Xiao-Yi , Zhang Fei , Ren Tao , Xia Xun 
Published: February 2025

BACKGROUND
Metachronous gastric cancer usually refers to a tumor that occurs in the stomach more than half a year after esophageal cancer surgery, and metastasis of primary esophageal cancer should be excluded. There are few reports of metachronous gastric adenosquamous carcinoma with signet ring cell carcinoma combined with early tubular adenoma of the colon after esophageal cancer surgery, which has a high degree of malignancy. This is also the reason for the poor treatment results.
CASE SUMMARY
A 54-year-old male patient was admitted to the hospital with “dysphagia obstruction”. Seven years ago, the patient was diagnosed with well-differentiated squamous cell carcinoma in the middle esophagus (T4N1M0 stage) and left gastric lymph node metastasis. In the final resection of the esophageal cancer, no residual cancer tissue was found in the esophageal and gastric stump. The patient’s medical history 7 years ago (preoperative gastroscopy and other examinations) revealed no gastric tumor. Combined with the patient’s history, the diagnosis of recurrent esophageal cancer was made on this admission. The final pathological results were surprising: Metachronous gastric adenosquamous carcinoma with signet ring cell carcinoma combined with early tubular adenoma of the colon. Considering the high malignancy of the tumor, the complexity of the second operation, and many complications, the patient received chemotherapy.
CONCLUSION
He had a history of esophageal cancer resection. Gastroenteroscopy should be performed simultaneously to avoid missed diagnosis and misdiagnosis.
Irreversible electroporation combined with anti-programmed cell death protein 1 therapy promotes tumor antigen-specific CD8+ T cell response
Authors: Ma Yang-Yang , Wang Xiao-Hua , Zeng Jian-Ying , Chen Ji-Bing , Niu Li-Zhi 
Published: February 2025

BACKGROUND
Irreversible electroporation (IRE) is a novel local tumor ablation approach with the potential to activate the host’s immune system. However, this approach is insufficient to prevent cancer progression, and complementary approaches are required for effective immunotherapy.
AIM
To assess the immunomodulatory effects and mechanism of IRE combined anti-programmed cell death protein 1 (PD-1) treatment in subcutaneous pancreatic cancer models.
METHODS
C57BL-6 tumor-bearing mice were randomly divided into four groups: Control group; IRE group; anti-PD-1 group; and IRE + anti-PD-1 group. Tumor-infiltrating T, B, and natural killer cell levels and plasma concentrations of T helper type 1 cytokines (interleukin-2, interferon-γ, and tumor necrosis factor-α) were evaluated. Real-time PCR was used to determine the expression of CD8 (marker of CD8+ T cells) in tumor tissues of the mice of all groups at different points of time. The growth curves of tumors were drawn.
RESULTS
The results demonstrated that the IRE + anti-PD-1 group exhibited significantly higher percentages of T lymphocyte infiltration, including CD4+ and CD8+ T cells compared with the control group. Additionally, the IRE + anti-PD-1 group showed increased infiltration of natural killer and B cells, elevated cytokine levels, and higher CD8 mRNA expression. Tumor volume was significantly reduced in the IRE + anti-PD-1 group, indicating a more pronounced therapeutic effect.
CONCLUSION
The combination of IRE and anti-PD-1 therapy promotes CD8+ T cell immunity responses, leading to a more effective reduction in tumor volume and improved therapeutic outcomes, which provides a new direction for ablation and immunotherapy of pancreatic cancer.
PENGARUH ABSENSI DAN TUNJANGAN KERJA TERHADAP KINERJA PEGAWAI PADA BADAN KEPEGAWAIAN DAN PENGEMBANGAN SUMBER DAYA MANUSIA (BKPSDM) KOTA TANGERANG SELATAN
Authors: Yunianti Dhita Syahrani , SE.MM Herudini Subariyanti 
Published: February 2025

Penerapan absensi menggunakan biometrik ini nyatanya mempengaruhi disiplin kinerja pegawai di Badan Kepegawaian dan Pengembangan Sumber Daya Manusia (BKPSDM).Dibandingkan antara sebelum dan sesudah penerapan absen biometrik. Penelitian ini menggunakan 3 variabel yang mana Absensi (X1) Tunjangan Kerja (X2) Sebagai variabel bebas Kinerja Pegawai (Y) sebagai variabel terikat, lalu jenis desain penelitian yang digunakan adalah dengan metode kuantitatif statistik yaitu dengan melakukan pengujian dan analisis data melalui perhitungan angka, lalu menarik kesimpulan dengan dan hasil pengujian tersebut. Berdasarkan hipotesis yang di ajukan maka dilakukan penguji dengan menggunakan analisis regresi linear berganda. Hasil penguji hipotensis secara parsial mengatakan bahwa absensi Ditolak berarti tidak memiliki pengaruh signifikan terhadap kinerja dan Tunjangan kerja memiliki pengaruh signifikan terhadap kinerja pegawai. Sedangkan hasil pengujian hipotensis secara Simultan memiliki pengaruh terhadap kinerja pegawai Pada Badan Kepegawaian Dan Pengembangan Sumber Daya Manusia (BKPSDM) Kota tangerang Selatan.
Air-pollution-satellite-based CO2 emission inversion: system evaluation, sensitivity analysis, and future research direction
Authors: Li Hui , Qiu Jiaxin , Zheng Bo 
Published: February 2025

Abstract. Simultaneous monitoring of greenhouse gases and air pollutant emissions is crucial for combating global warming and air pollution. We previously established an air-pollution-satellite-based carbon dioxide (CO2) emission inversion system, successfully capturing CO2 and nitrogen oxide (NOx) emission fluctuations amid socioeconomic changes. However, the system's robustness and weaknesses have not yet been fully evaluated. Here, we conduct a comprehensive sensitivity analysis with 31 tests on various factors including prior emissions, model resolution, satellite constraint, and inversion system configuration to assess the vulnerability of emission estimates across temporal, sectoral, and spatial dimensions. The relative change (RC) between these tests and base inversion reflects the different configurations' impact on inferred emissions, with 1 standard deviation (1σ) of RC indicating consistency. Although estimates show increased sensitivity to tested factors at finer scales, the system demonstrates notable robustness, especially for annual national total NOx and CO2 emissions across most tests (RC < 4.0 %). Spatiotemporally diverse changes in parameters tend to yield inconsistent impacts (1σ ≥ 4 %) on estimates and vice versa (1σ < 4 %). The model resolution, satellite constraint, and NOx emission factors emerge as the major influential factors, underscoring their priority for further optimization. Taking daily national total CO2 emissions as an example, the RC‾ ± 1σ they incur can reach −1.2 ± 6.0 %, 1.3 ± 3.9 %, and 10.7 ± 0.7 %, respectively. This study reveals the robustness and areas for improvement in our air-pollution-satellite-based CO2 emission inversion system, offering opportunities to enhance the reliability of CO2 emission monitoring in the future.
МАТЕМАТИЧЕСКАЯ МОДЕЛЬ КОЛЕБАНИЙ В ЭЛЕКТРОПРИВОДЕ С ДВУХСТУПЕНЧАТЫМ ЦИЛИНДРИЧЕСКИМ ЗУБЧАТЫМ РЕДУКТОРОМ
Authors: Кондратенко Л.А. , Миронова Л.И. 
Published: February 2025

Для описания процесса передачи мощности по звеньям привода применена система линейных дифференциальных уравнений первого порядка, учитывающая ускорения и скорости изменения напряжений при крутильных и поперечных колебаниях. Выведено и решено векторное уравнение восьмого порядка, включающее алгебраические элементы, позволяющее в первом приближении инженерным способом рассчитать колебания напряжений и скоростей движения в любом звене системы. Для конкретного привода проведен анализ влияния инерционных свойств нагрузки и особенностей формирования момента сопротивления на динамические характеристики привода.
To describe the process of power transmission along the drive links, a system of first-order linear differential equations is used, taking into account accelerations and rates of stress change during torsional and transverse vibrations. An eighth-order vector equation involving algebraic elements is derived and solved. This equation allows, as a first approximation, to calculate in an engineering way fluctuations in stress and movement speeds in any link of the system. For a specific drive, an analysis of the influence of the inertial properties of the load and the characteristics of the formation of the moment of resistance on the dynamic characteristics of the drive was carried out.
Экспериментальное исследование сварочно-сборочной оснастки стоечного типа
Authors: Федотов Н.О. , Федотова М.Н. , Лаптева Е.Н. 
Published: February 2025

В статье описаны результаты исследования прочности и устойчивости сварочно-сборочной оснастки. Рассмотрены два варианта сварочно-сборочной оснастки – зубчатые прямые и радиусные лекала. Получено теоретическое подтверждение прочности и устойчивости стоечной оснастки
The paper describes the results of the study strength and stability of welding and assembly equipment. There are two options considered - jagged straight and radius patterns was modelled. Theoretical confirmation strength and stability rack-type welding equipment has been received.
РАЗРАБОТКА СТЕНДА ИМИТАЦИИ РАБОЧЕЙ СРЕДЫ ДЛЯ ВНУТРИЗАВОДСКИХ ИСПЫТАНИЙ ПЕРИСТАЛЬТИЧЕСКИХ НАСОСНЫХ АГРЕГАТОВ
Authors: Муранов А.Н. , Сидоров И.М. , Ногмов М.Х. , Карпов Н.С. 
Published: February 2025

В статье рассматривается проектирование и расчет стенда имитации рабочей среды для внутризаводских испытаний перистальтических насосных агрегатов. Такой стенд разрабатывается с целью оценки долговечности и надежность конструкции за счет проведения испытаний в условиях максимально приближенных к реальным. Для подтверждения параметров надежности и работоспобности конструкции проведен прочностной расчет. Результаты имитационного моделирования позволили подтвердить работоспособность конструкции.
The reliability and service life of pumping systems depend on many factors. A malfunction in the elements of such systems can lead to serious consequences for production. During operation, pumping units are exposed to high loads, as well as corrosive wear. To control the processes occurring in the pump and evaluate its performance, both theoretical and experimental studies are carried out using special production test benches. The article discusses the design and calculation of a working environment imitation bench for in-plant testing of peristaltic pumping units. Such a bench is developed to assess the durability and reliability of the structure by conducting tests in conditions as close as possible to real ones. To confirm the reliability parameters and operability of the structure, a strength calculation was carried out. The results of the simulation modeling made it possible to confirm the operability of the structure.