bluuebunny/crossref_metadata_2025_split huggingface dataset:
Efficient and quantum‐secure authenticated key exchange scheme for mobile satellite communication networks
Authors: Mishra Dheerendra , Rewal Purva , Pursharthi Komal 
Published: April 2024

SummaryThe mobile satellite communication (MSC) system is a vital communication method in which mobile users and network control centers connect via satellites. Since the satellite's communication is wireless, communication security is a critical factor to ensure accountable communication. Key exchange and authentication (KEA) mechanism is widely used to achieve data security for data transmitted in an insecure or open channel. Different authentication systems are suggested in the last many years to establish safe communication, whereas most existing security protocols are based on factorization or discrete logarithm. However, these systems are no longer reliable by Shor's algorithm as any discrete logarithm and factorization can be resolved in polynomial time on quantum computers. Thus, developing a quantum secure KEA protocol for MSC systems is necessary. In this direction, recently a ring learning with an error‐based KEA technique is proposed to ensure a quantum‐safe environment. This scheme is quantum‐safe and satisfies desirable security attributes but has low efficiency in computation and communication. Moreover, establishing a secure session requires six communications among involved entities. As a result, replay attack detection at an early stage is not possible for the central authority (server), which could delay the server response, and the adversary gets the advantage of drawing a denial of service scenario for authorized entities. We propose a lattice‐based KEA protocol for the MSC system to improve computation, communication efficiency, and early‐stage replay attack detection. The security analysis of the proposed scheme is presented in the random oracle model. Calculation of performance is also presented to observe advantages in computation and communication overhead.
Modification of Intumescent Coatings with Porous Zirconium Silicate
Authors: Medynskaya Anna V. , Zheludkova Ekaterina A. , Gavrilova Natalia N. , Soldatov Mikhail A. 
Published: April 2024

AbstractTwo porous zirconium silicates were synthesized by the interaction of cubic octa(tetramethylammonium)silicate with zirconium oxychloride. The results show that the porosity of the obtained products depends on the synthesis conditions. The surface area of porous zirconium silicate ZrSi‐1 synthesized at room temperature was 3.45 m2/g, and the surface area of porous zirconium silicate ZrSi‐2 synthesized when heated to 65 °C was 23.77 m2/g. X‐ray diffraction data from ZrSi‐1 and ZrSi‐2 show that their structure is amorphous. The synthesized porous silicates were used as modifiers for intumescent fire‐retardant coatings. The obtained intumescent coatings were tested in a muffle furnace at 600 °C. It was found that the use of porous zirconium silicate in intumescent coatings increases their char expansion, which indirectly shows that the porous zirconium silicate increases the flame‐retardant properties of intumescent coating. Moreover, it was shown that the use of zirconium silicate with higher porosity leads to higher char expansion and as a result to higher efficiency of the fire‐retardant coating. So, the non‐modified coatings, coatings with 0.5 % ZrSi‐1, coatings with 0.5 % ZrSi‐2, coatings with 1 % ZrSi‐1, coatings with 1 % ZrSi‐2, had the char expansion of 17, 23, 32, 36, 38 times, respectively.
Design, Synthesis, and Cytotoxicity of 1H‐1,2,3‐Triazole Tethered‐Benzophenone Based Derivatives as Potent Candidate Anti‐Breast Cancer Agents
Authors: Baka Durgaprasad , Kishore Ravada , Sunkara Srinivasarao , Varadhi Govinda , Kashanna Jajula , Tripuramallu Bharat Kumar , Nalla Kirankumar , Kanade Santosh R. 
Published: April 2024

AbstractThe process of developing potential anticancer molecules comprises the cautious selection of core moiety and tethering pharmacologically active chemical functionalities to biologically active pharmacophores. Here, we report a library of ten 1H‐1,2,3‐triazole tethered‐benzophenone derivatives. Protein‐ligand interaction studies through molecular docking of our synthesised compounds were carried out with a novel epigenetic oncogene‐enhancer of zeste homolog2 (EZH2). Molecular docking studies disclosed that our synthesized compounds showed potent inhibition against EZH2 and in‐vitro validation assays through MTT assay, Trypan blue dye exclusion and in‐vitro methylation assays, these studies revealed the synthesized compounds‐9 c, 9 f, 9 i showed potent inhibition on EZH2. The anticipated anti‐cancer activity of library molecules was assessed in in‐vitro against breast and lung cancer (MCF7 and A549) cell lines, supported by in‐vitro assays and molecular docking binding studies. Among all ten compounds, 9 c, 9 f, 9 i are exerted potential anti‐cancer activity against the selected cancer cell line in in‐vitro. The results were supported by in‐silico docking studies. Further validation studies in in‐vivo models will pave a way for developing potent inhibitors against breast cancer and lung cancer.
Synthesis of Substituted Arylidene Hydrazinyl Trifluoromethyl Thiazole Derivatives and their Antibacterial Studies using different Genes Expression
Authors: Abed Ali Adnan , Abid Mohammed Adnan , Turki Ahmed , Haroon Muhammad , Mehmood Hasnain , Akhtar Tashfeen , Woodward Simon 
Published: April 2024

AbstractCyclization of substituted thiosemicarbazones with 3‐bromo‐1,1,1‐trifluoroacetone affords new 2‐(arylidenehydrazinyl)‐4‐trifluoromethylthiazoles (3 a–m, 13 examples, 71–89 %). These compounds were synthesized in two steps and characterized using 1H‐, 13C‐NMR, FTIR spectroscopy, and HRMS. All of these compounds show potent activity against both Escherichia coli (E. coli) and Klebsiella pneumonia (K. pneumonia) bacterial strains. The compounds 2‐(2‐(1‐(4‐fluorophenyl)ethylidene)hydrazinyl)‐4(trifluoromethyl)thiazole (3 b), 2‐(2‐(2‐hydroxy‐3‐methylbenzylidene)hydrazinyl)‐4‐(trifluoromethyl)thiazole (3 c), and 2‐(2‐(3‐fluorobenzylidene)hydrazinyl)‐4‐(trifluoromethyl)thiazole (3 k) show optimal minimum inhibitory concentration (MIC) values of 16 μg/mL against E. coli and (32, 32, and 8 μg/ml) against K. pneumonia, respectively. Using a qRT‐PCR technique the gene expression of two different genes (FLU and mexB) was determined. Most of these compounds (3 a, d–j, l, m) exhibited downregulation of these genes for both types of bacteria, whereas the gene expressions were unaffected after treating 3 b, 3 c and 3 k. This means that although these compounds were able to inhibit bacterial growth, they did not target the FLU and mexB genes in both types of bacteria. These findings suggest further investigations for lead optimization could provide viable antibiotics due to their structural similarity with some commercially available antibiotics.
Designing Surface Passivators Through Intramolecular Potential Manipulation for Efficient and Stable Perovskite Solar Cells
Authors: Guo Tianle , Liang Zheng , Liu Boyuan , Huang Zhenda , Xu Huifen , Tao Yuli , Zhang Hui , Zheng Haiying , Ye Jiajiu , Pan Xu 
Published: April 2024

AbstractThe conjugation of terminal ammonium salt groups with perovskite surfaces is a frequently employed technique that aims to enhance the overall performance of perovskite materials, encompassing both bulk and surface properties. Particularly, it exhibits heightened efficacy when applied to surface modification, due to its ability to mitigate defect accumulation and facilitate facile binding with the receptive sites inherent to the perovskite structure. However, the interaction of the bulk ammonium group with PbI2 has the potential to form a low‐dimensional phase of perovskite, which may obstruct carrier extraction at the interface. Therefore, the surface passivators (MeO‐PFACl) are designed through intramolecular potential manipulation. The combinations of the electron‐donating methoxy group and π–π conjugation of the phenyl ring reduce the local potential at the reactive site of formamidinium group, making it less likely to form a low‐dimension phase with perovskite. This surface passivation strategy effectively suppresses the surface nonradiative recombination and promotes the interface carrier extraction. The devices treated with MeO‐PFACl have demonstrated exceptional performance, achieving a peak power conversion efficiency (PCE) of 25.88%, with an average PCE of 25.37%. These works offer a novel principle for enhancing both the efficiency and stability of PSCs using ammonium‐incorporated molecules without the induction of an additional phase layer.
Exploring EFL Learners' Academic Literacy Development: An Ecological Perspective
Authors: Li Dongying , Zhang Lian 
Published: April 2024

AbstractAcademic literacy development is shaped by multiple individual and contextual factors that mutually interact with one another. Previous studies have identified some of the factors, but few explored their complex and dynamic interactions in students' writing practices. The study adopts a case study method to examine EFL learners' academic literacy development from an ecological perspective. Findings reveal that (1) affordances and constraints are not predetermined categories but are interactive and emergent; (2) personal traits largely shape the way learners perceive, appropriate, and interact with contextual affordances; (3) complex person‐environment interactions are generally situated within the dialectical relationship between agency and structure in connected literate activities; (4) the way students characterize and shape their relations with contextual affordances/constraints bears developmental effects. The study unveils complex person‐environment interactions in EFL learners' academic literacy development while shedding light on relevant pedagogical practices.
Gallic acid‐loaded chitosan nanoparticles enhance the DNA damage and apoptotic features through inhibiting flap endonuclease‐1 in triple‐negative breast cancer cells
Authors: Velaiyan Monica , Muthusamy Rajasekar , Kativa Miguel , Annamalai Asaikkutti , Govindhan Annamalai , Punniyakotti Parthipan , Balupillai Agilan 
Published: April 2024

AbstractThis study investigated the fabrication of gallic acid‐loaded chitosan nanoparticles (Gal‐Chi‐NPs) that enhanced the DNA damage and apoptotic features by inhibiting FEN‐1 expressions in MDA‐MB 231 cells. Gal‐Chi‐NPs were fabricated by the ionic gelation method, and it was characterized by several studies such as dynamic light spectroscopy, Fourier‐transforms infrared spectroscopy, x‐ray diffraction, scanning electron microscopy, energy‐dispersive x‐ray, atomic force microscopy, and thermogravimetric analysis. We have obtained that Gal‐Chi‐NPs displayed 182.2 nm with crystal, smooth surface, and heat stability in nature. Gal‐Chi‐NPs induce significant toxicity in MDA‐MB‐231 cells that compared with normal NIH‐3T3 cells. A significant reactive oxygen species (ROS) overproduction was observed in Gal‐Chi‐NPs treated MDA‐MB‐231. Flap endonuclease‐1 (FEN‐1) is a crucial protein involved in long patch base excision repair that is involved in repairing the chemotherapeutic mediated DNA‐damaged base. Therefore, inhibition of FEN‐1 protein expression is a crucial target for enhancing chemotherapeutical efficacy. In this study, we have obtained that Gal‐Chi‐NPs treatment enhanced the DNA damage by observing increased p‐H2AX, PARP1; and suppressed the expression of FEN‐1 in MDA‐MB‐231 cells. Moreover, Gal‐Chi‐NPs inhibited the expression of tumor proliferating markers p‐PI3K, AKT, cyclin‐D1, PCNA, and BCL‐2; induced proapoptotic proteins (Bax and caspase‐3) in MDA‐MB 231 cells. Thus, Gal‐Chi‐NPs induce DNA damage and apoptotic features and inhibit tumor proliferation by suppressing FEN‐1 expression in triple‐negative breast cancer cells.
Introduction. The War Against Ukraine: The EU Facing New Realities
Authors: Knodt Michèle , Wiesner Claudia 
Published: April 2024

AbstractThis book delves into the profound implications of Russia’s war against Ukraine for both the European Union (EU) and the field of EU Studies. It systematically addresses three overarching themes. 1) The Evolution of Theories and Approaches: This volume scrutinises how the ongoing war reshapes the landscape of EU Studies and how the war against Ukraine is received and discussed within the realm of EU and International Relations Studies. It rigorously examines the far-reaching consequences of the war on established theoretical frameworks, approaches and conceptual paradigms in both academic disciplines. 2) The Transforming EU Polity and Its Policies: An in-depth analysis unfolds the multifaceted impact of the war on the EU, spanning its external and internal dynamics. Particular attention is devoted to the intricate interplay between democracy and autocracy, the challenges surrounding the rule-of-law and the complex intersections of energy security, sustainability and emergency governance. 3) Ukraine’s EU accesion: Within the context of the war, this book explores the prospects, conditions and timing of Ukraine’s potential accession to the EU. It delves into the shifting narratives surrounding Ukraine, scrutinises perceptions of the EU’s role as a ‘normative power’ and assesses the extent to which the EU can assert this identity amidst contestations over accession conditions. Furthermore, it probes the evolving global perceptions of Ukraine and the war amidst a dynamic and shifting world order. In the introduction, we will sketch these problem fields, delving into their intricacies and indicating the answers given within the pages of this book.
COVID-19 Corpora
Authors: Moreno-Ortiz Antonio 
Published: April 2024

AbstractThe COVID-19 pandemic has had a profound effect on all aspects of society. As a component of this society, the academic and scientific community is not an exception. Numerous datasets have been compiled and made available over the past three years as a result of the extensive data collection efforts conducted by academics. Text corpora, as a rich source of information that is liable to be used for scientific inquiry, were compiled and made available from the onset of the pandemic. They differ in many aspects and compilation criteria, including origin, size, intended applications, text typology, and availability. This chapter is intended to provide a list of the most important text resources, together with some relevant research works that have used them.
Higher d Eisenstein series and a duality-invariant distance measure
Authors: Benjamin Nathan , Fitzpatrick A. Liam 
Published: April 2024

Abstract
The Petersson inner product is a natural inner product on the space of modular invariant functions. We derive a formula, written as a convergent sum over elementary functions, for the inner product Es(G, B) of the real analytic Eisenstein series $${E}_{s}\left(\tau ,\overline{\tau }\right)$$ and a general point in Narain moduli space. We also discuss the utility of the Petersson inner product as a distance measure on the space of 2d CFTs, and apply our procedure to evaluate this distance in various examples.
S-matrix positivity without Lorentz invariance: a case study
Authors: Hui Lam , Kourkoulou Ioanna , Nicolis Alberto , Podo Alessandro , Zhou Shengjia 
Published: April 2024

Abstract
We investigate the analytic structure of scattering amplitudes in theories in which Lorentz invariance is spontaneously broken. We do so by computing and studying the S-matrix for a simple example: a superfluid described by a complex scalar with quartic interactions. The computation is confined to tree-level, for there are no absolutely stable single-particle states, though the lifetime can be made long by lowering the chemical potential. For the 2 → 2 amplitude in center-of-mass configurations, not only is crossing symmetry violated, there appears a tree level branch cut for unphysical kinematics. Its appearance is a consequence of non-analyticity in the dispersion relation. The branch point defines a new scale in the problem, which scales inversely with the chemical potential. In this example, even derivatives of the forward amplitude are positive while odd derivatives are negative. This pattern can be understood in a general way in the limit of a small chemical potential, or weak Lorentz breaking.
On when the union of two algebraic sets is algebraic
Authors: Aichinger Erhard , Behrisch Mike , Rossi Bernardo 
Published: April 2024

AbstractIn universal algebraic geometry, an algebra is called an equational domain if the union of two algebraic sets is algebraic. We characterize equational domains, with respect to polynomial equations, inside congruence permutable varieties, and with respect to term equations, among all algebras of size two and all algebras of size three with a cyclic automorphism. Furthermore, for each size at least three, we prove that, modulo term equivalence, there is a continuum of equational domains of that size.
CLT for $$\beta $$-Ensembles at High Temperature and for Integrable Systems: A Transfer Operator Approach
Authors: Mazzuca G. , Memin R. 
Published: April 2024

Abstract
In this paper, we prove a polynomial central limit theorem for several integrable models and for the

$$\beta $$

β

-ensembles at high temperature with polynomial potential. Furthermore, we connect the mean values, the variances and the correlations of the moments of the Lax matrices of these integrable systems with the ones of the

$$\beta $$

β

-ensembles. Moreover, we show that the local functions’ space-correlations decay exponentially fast for the considered integrable systems. For these models, we also established a Berry–Esseen-type bound.
Uniqueness of Maximal Spacetime Boundaries
Authors: Graf Melanie , van den Beld-Serrano Marco 
Published: April 2024

AbstractGiven an extendible spacetime one may ask how much, if any, uniqueness can in general be expected of the extension. Locally, this question was considered and comprehensively answered in a recent paper of Sbierski [22], where he obtains local uniqueness results for anchored spacetime extensions of similar character to earlier work for conformal boundaries by Chruściel [2]. Globally, it is known that non-uniqueness can arise from timelike geodesics behaving pathologically in the sense that there exist points along two distinct timelike geodesics which become arbitrarily close to each other interspersed with points which do not approach each other. We show that this is in some sense the only obstruction to uniqueness of maximal future boundaries: Working with extensions that are manifolds with boundary we prove that, under suitable assumptions on the regularity of the considered extensions and excluding the existence of such “intertwined timelike geodesics”, extendible spacetimes admit a unique maximal future boundary extension. This is analogous to results of Chruściel for the conformal boundary.
Asiaticoside alleviates lipopolysaccharide-induced acute lung injury by blocking Sema4D/CD72 and inhibiting mitochondrial dysfunction in RAW264.7 cell and mice
Authors: Zhang Jianhua , Zhao Hao , Wang Fang , Zhou Jie , Li Mao , Li Hua , Ren Meiping , Wang Lulu , Ren Qingyi , Zhong Xiaolin , Jiang Xian , Zhang Zhuo 
Published: April 2024

AbstractAcute lung injury (ALI) is a common disease with complex pathogenesis. However, the treatment is mainly symptomatic with limited clinical options. Asiaticoside (AS), a Chinese herbal extract, has protective effects against LPS-induced ALI in mice and inhibits nitric oxide and prostaglandin E2 synthesis; however, the specific mechanism of AS in the prevention and treatment of LPS-induced ALI needs further study. Sema4D/CD72 pathway, mitochondrial dysfunction, and miRNA-21 are closely associated with inflammation. Therefore, the present study aimed to explore whether AS exerts its therapeutic effect on ALI by influencing Sema4D/CD72 pathway and mitochondrial dysfunction, restoring the balance of inflammatory factors, and influencing miRNA-21 expression. Cell and animal experiments were performed to investigate the effect of AS on ALI. Lipopolysaccharide (LPS) was used to establish the ALI model. CCK8 and flow cytometry were used to detect the cell viability and apoptosis rate. HE staining and wet-to-dry weight ratio (W/D) of lung tissue were determined. The expressions of Sema4D, CD72, NF-κB p65, Bax, Bcl2, and caspase 3 in RAW264.7 cells and lung tissues were detected by western blot, and the levels of IL-10 and IL-1β induced by LPS in supernatant of RAW264.7 cells and BALF were measured by ELISA. And the expression of miRNA-21 in cells and lung tissues was detected by fluorescence quantitative PCR. The result shows that AS treatment suppressed LPS-induced cell damage and lung injury in mice. AS treatment could alleviate the pathological changes such as inflammatory infiltration and histopathological changes in the lungs caused by LPS, and reduce the ratio of W/D. AS significantly alleviated the decrease of mitochondrial membrane potential induced by LPS, inhibited the increase of ROS production, and reduced the expression of mitochondrial fission proteins Drp1 and Fis1. The high-dose AS group significantly downregulated the expression of Sema4D, CD72, phosphorylated NF-κB p65, and apoptosis-related proteins, decreased the pro-inflammatory factor IL-1β, and enhanced the level of anti-inflammatory factor IL-10. In addition, AS promoted miRNA-21 expression. These effects inhibited apoptosis and restored the balance between anti- and pro-inflammatory factors. This represents the inaugural report elucidating the mechanism by which AS inhibits the Sema4D/CD72 signaling pathway. These findings offer novel insights into the potential application of AS in both preventing and treating ALI.
Low anterolateral incision for single-port extraperitoneal robot-assisted pyeloplasty: description of technique and initial experience
Authors: Ramos Roxana , Chavali Jaya S. , Ferguson Ethan , Soputro Nicolas , Geskin Albert , Rhee Audrey , Kaouk Jihad 
Published: April 2024

Abstract
Purpose
This study aims to describe the surgical steps for the single-port low anterolateral extraperitoneal approach to pyeloplasty, report its feasibility, and share the initial outcomes of our experience.

Methods
We analyzed all consecutive patients who underwent single-port low anterolateral extraperitoneal pyeloplasty due to ureteropelvic junction obstruction (UPJO). The surgical steps included a pure single-port approach through a 3.5 cm low anterolateral incision two fingerbreadths above the superior pubic ramus. The ureter was localized and followed cranially, a dismembered pyeloplasty was performed, and a running ureteropelvic anastomosis was completed. No drains were placed. The urinary catheter was removed upon discharge, and the ureteral stent after 3–5 weeks.

Results
A total of eight cases (two adults and six children) were completed successfully, without complications or conversions. Median operative time, console time, and estimated blood loss were 208.5 min, 114.5 min, and 10.0 ml, respectively. All patients were discharged within 24 h, except for one that required urinary output observation due to retention. There were no major postoperative complications. The median pain score at discharge was 0/10. Only one patient was prescribed PRN opioids at discharge. The readmission rate was 0.0%. All patients were asymptomatic on their last follow-up with no definitive obstruction on imaging, and no requirement for additional procedures or stents.

Conclusion
Single-port low anterolateral extraperitoneal pyeloplasty is a feasible alternative for surgical treatment of UPJO in adult and pediatric patients with improved recovery outcomes.