bluuebunny/crossref_metadata_2025_split huggingface dataset:
General rotationally symmetric coupled feeding structure and its application to single- and dual-band balanced filters
Authors: Wang Yumin , Gao Xiaohui , Huang Shengxiang , Deng Lianwen , Qiu Lei-Lei 
Published: May 2024

Abstract
This paper proposes a new general rotationally symmetric coupled feeding structure and its applications to the design of single- and dual-band balanced filters for high common-mode (CM) suppression. The balanced feeder consists of two coupling lines coupled with a ring resonator, which can be either a uniform impedance ring resonator or a stepped impedance ring resonator. Under differential-mode (DM) excitation, the voltage distributions of the coupling-line and resonator are both rotationally even-symmetric and the total coupling coefficient adds up, which indicates that the proposed feeding structure can achieve DM transmission characteristic. Under CM excitation, their voltage distributions are rotationally even- and odd-symmetric, respectively, so the total coupling coefficient cancels out to zero and CM suppression property is achieved. For demonstration, four single- and dual-band balanced filters with wide range of CM and harmonic suppression are designed, fabricated, and measured, and the simulation and measured results match well.
Numerical analysis of electrothermoconvection of a dielectric nanofluid in a heated cavity
Authors: Yang Pengfei , Peng Yuxing , Ramachandran Deepak Selvakumar , Alkaabi Ahmed K. , Wu Jian 
Published: May 2024

Abstract
A numerical analysis of electrohydrodynamic (EHD) flow and heat transfer of nanofluid in a heated rectangular cavity is presented. A two-dimensional (2D) rectangular cavity heated from the bottom is considered. An electric potential difference is applied vertically, with the bottom wall acting as a high-voltage electrode, and the top wall is grounded. TiO2-25 # transformer oil nanofluid with nanoparticle volume fraction ranging from 0–5% is considered. The numerical model for EHD flow and heat transfer of nanofluid is implemented in the finite-volume method (FVM) based numerical framework of OpenFOAM. A single-phase approach based on the effective properties is adopted to model the nanofluids. A two-way coupled EHD flow model is employed to consider mutual interactions of flow and electric field variables. The flow and heat transfer behavior of nanofluids in the presence of an electric field is quantified with reference to the key parameters, electric Rayleigh number (T), and the nanoparticle volume fraction ϕ. The addition of nanoparticles increased the viscosity and marginally reduced the natural convective flow and heat transfer. However, EHD flow induced by the electric field aided in overcoming the weak natural convection flow in nanofluids. Results confirm that nanofluids’ net effective heat transfer rates are notably increased in the presence of the electric field. For the parameters under consideration, combining electric fields with nanofluids led to a significant heat transfer enhancement of up to 32.3%. The present study showcases the feasibility of combining passive heat transfer enhancement using nanoparticles and active heat transfer enhancement using EHD flow.
Growth of variable aspect ratio ZnO nanorods by hydrothermal technique
Authors: Al-Rasheedi Asmaa , Salwati Abdulla A , Aida M S 
Published: May 2024

Abstract
Zinc oxide (ZnO) nanorods were successfully prepared by hydrothermal process. The influence of the solution temperature on the ZnO nanorods aspect ratio is investigated in the present work. The x-ray diffraction (XRD) and scanning electron microscopy (SEM) results and analysis reveal the formation of ZnO nanorods owing hexagonal Wurtzite structure with preferential orientation along the c-axis. We found that the solution temperature is a key parameter controlling the aspect ratio of the formed ZnO nanorods. The later increases linearly with the preparation temperature. The rod length is thermally activated with an activation energy of 0.48 eV, which corresponds to the activation energy of the reaction forming ZnO, indicating that the nanorods growth is controlled by the surface reaction rather than by mass transport. While, the rods diameter is reduced with increasing temperature, its activation energy of 0.23 eV is equal to the species diffusion activation energy in the solution and to the crystallite size activation energy suggesting, thereafter that the rod diameter variation is controlled by the nucleation dynamic.
Proxy-SU(4) symmetry in A = 60–90 region
Authors: Kota V K B , Sahu R 
Published: May 2024

Abstract
Applications of the proxy-SU(3) model of Bonatsos and collaborators to nuclei in A = 60–90 region introduces proxy-SU(4) symmetry. Shell model spaces with single particle orbits 1
p
3/2, 1
p
1/2, 0
f
5/2 and 0
g
9/2 are essential for these nuclei and also protons and neutrons in this region occupy the same single particle orbits. With this and applying the ‘proxy scheme’, the 0
g
9/2 changes to 0
f
7/2 giving the spectrum generating algebra U(40) ⊃ [U(10) ⊃ G ⊃ SO(3)] ⨂ [SU

ST
(4) ⊃ SU

S
(2) ⨂ SU

T
(2)]. With G = SU(3), we have the proxy-SU(3) model. It is easy to see that proxy-SU(3) symmetry implies goodness of the SU(4) symmetry appearing above, i.e. proxy-SU(4) symmetry. Shell model calculations pointing out the need for 0
g
9/2 orbit, ground state masses, shape changes and shape co-existence in A = 60–90 region and GT distributions clearly show the importance of proxy-SU(4) in this mass region. Besides presenting this evidence, new proxy schemes with G = SU(5), SO(6) and SO(10) that are generated by good proxy-SU(4) symmetry are described in some detail. An important feature is that the four proxy symmetries SU(3), SO(6), SU(5) and SO(10) appear twice.
Harmonic analysis of discrete tracers of large-scale structure
Authors: Baleato Lizancos Antón , White Martin 
Published: May 2024

Abstract
It is commonplace in cosmology to analyze fields projected onto the celestial sphere, and in particular density fields that are defined by a set of points e.g. galaxies. When performing an harmonic-space analysis of such data (e.g. an angular power spectrum) using a pixelized map one has to deal with aliasing of small-scale power and pixel window functions. We compare and contrast the approaches to this problem taken in the cosmic microwave background and large-scale structure communities, and advocate for a direct approach that avoids pixelization. We describe a method for performing a pseudo-spectrum analysis of a galaxy data set and show that it can be implemented efficiently using well-known algorithms for special functions that are suited to acceleration by graphics processing units (GPUs). The method returns the same spectra as the more traditional map-based approach if in the latter the number of pixels is taken to be sufficiently large and the mask is well sampled. The method is readily generalizable to cross-spectra and higher-order functions. It also provides a convenient route for distributing the information in a galaxy catalog directly in harmonic space, as a complement to releasing the configuration-space positions and weights, and a route to spectral apodization. We make public a code enabling the application of our method to existing and upcoming datasets.
A pilot search for MeV gamma-ray emission from five galaxy clusters using archival COMPTEL data
Authors: Manna Siddhant , Desai Shantanu 
Published: May 2024

Abstract
We search for MeV gamma-ray emission between 0.75–30 MeV from five galaxy clusters, viz. Coma, VIRGO, SPT-CL J2012-5649, Bullet, and El Gordo, using archival data from the COMPTEL telescope. For this purpose we use three search templates: point source, radial disk and radial Gaussian. We do not detect any signals from Coma, SPT-CL J2012-5649, Bullet and El Gordo clusters with the 95% c.l. photon energy flux limit ∼ 10-10erg/cm2/s.
For VIRGO, we detect a non-zero signal between 0.75 to 1.50 MeV having marginal significance of about 2.5σ, with the observed energy flux equal to ∼ 10-9 ergs/cm2/s. However, we do not confirm the previously reported evidence in literature for a gamma-ray line from Coma and VIRGO clusters between 5–7 MeV.
Exploring the detection of AQNs in large liquid detectors
Authors: Lazanu I. , Parvu M. 
Published: May 2024

Abstract
Recent work from the last years has raised the possibility that a portion of Dark Matter could consist of exotic particles, such as axion (anti)quark nuggets (AQN, AQ̅N). After a brief review outlining the main features of axion antiquark nuggets, we explore potential experimental signatures that can be leveraged to search for these stable supermassive particles in future surface and underground experiments using large liquid detectors. These expected signals are discussed in relation with the specific characteristics of each detection system.
Kerr black hole shadows from axion-photon coupling
Authors: Chen Songbai , Jing Jiliang 
Published: May 2024

Abstract
We have investigated the motion for photons in the Kerr black hole spacetime under the
axion-photon coupling. The birefringence phenomena arising from the axion-photon coupling can be
negligible in the weak coupling approximation because the leading-order contributions to the
equations of motion come from the square term of the coupling parameter. We find that the
coupling parameter makes the size of shadows slightly increase for arbitrary spin parameter. For
the rapid rotating black hole case with a larger coupling, we find that there exist a
“pedicel”-like structure appeared in the left of the “D”-type like shadows. Comparing the
shadow size of the Kerr black hole with the shadow size of the Sgr A* and M87* black holes, we
make constraints on the parameter space for such a theoretical model of the
axion-photon coupling.
A viscoelastic nonlinear energy sink with an electromagnetic energy harvester: Narrow-band random response
Authors: Liao 廖 Zhi-Jing 志晶 , Sun 孙 Ya-Hui 亚辉 , Liu 刘 Yang 洋 
Published: May 2024

Abstract
Nonlinear energy sink is a passive energy absorption device that surpasses linear dampers, and has gained significant attention in various fields of vibration suppression. This is owing to its capacity to offer high vibration attenuation and robustness across a wide frequency spectrum. Energy harvester is a device employed to convert kinetic energy into usable electric energy. In this paper, we propose an electromagnetic energy harvester enhanced viscoelastic nonlinear energy sink (VNES) to achieve passive vibration suppression and energy harvesting simultaneously. A critical departure from prior studies is the investigation of the stochastic P-bifurcation of the electromechanically coupled VNES system under narrow-band random excitation. Initially, approximate analytical solutions are derived using a combination of a multiple-scale method and a perturbation approach. The substantial agreement between theoretical analysis solutions and numerical solutions obtained from Monte Carlo simulation underscores the method’s high degree of validity. Furthermore, the effects of system parameters on system responses are carefully examined. Additionally, we demonstrate that stochastic P-bifurcation can be induced by system parameters, which is further verified by the steady-state density functions of displacement. Lastly, we analyze the impacts of various parameters on the mean square current and the mean output power, which are crucial for selecting suitable parameters to enhance the energy harvesting performance.
Negative muon beam generation with muon catalyzed fusion
Authors: Mori Yoshiharu , Uesugi Tomonori , Ishi Yoshihiro 
Published: May 2024

Abstract
A new scheme of low energy negative muon source with muon
catalyzed fusion (MuCF) is described. In the MuCF reaction process,
muonic helium ions (μHe+) are created. By re-accelerating
and stripping μHe+ ions, a low emittance negative muon beam
is generated.
Recent advances in cell membrane camouflaged nanotherapeutics for the treatment of bacterial infection
Authors: Jia Yinan , Zhang Li , Xu Junhua , Xiang Lin 
Published: May 2024

Abstract
Infectious diseases caused by bacterial infections are common in clinical practice. Cell membrane coating nanotechnology represents a pioneering approach for the delivery of therapeutic agents without being cleared by the immune system in the meantime. And the mechanism of infection treatment should be divided into two parts: suppression of pathogenic bacteria and suppression of excessive immune response. The membrane-coated nanoparticles exert anti-bacterial function by neutralizing exotoxins and endotoxins, and some other bacterial proteins. Inflammation, the second procedure of bacterial infection, can also be suppressed through targeting the inflamed site, neutralization of toxins, and the suppression of pro-inflammatory cytokines. And platelet membrane can affect the complement process to suppress inflammation. Membrane-coated nanoparticles treat bacterial infections through the combined action of membranes and nanoparticles, and diagnose by imaging, forming a theranostic system. Several strategies have been discovered to enhance the anti-bacterial/anti-inflammatory capability, such as synthesizing the material through electroporation, pretreating with the corresponding pathogen, membrane hybridization, or incorporating with genetic modification, lipid insertion, and click chemistry. Here we aim to provide a comprehensive overview of the current knowledge regarding the application of membrane-coated nanoparticles in preventing bacterial infections as well as addressing existing uncertainties and misconceptions.
Baxter Q-operator for the hyperbolic Calogero–Moser system
*
Authors: Hallnäs Martin 
Published: May 2024

Abstract
We introduce a Q-operator

Q

z

for the hyperbolic Calogero–Moser system as a one-parameter family of explicit integral operators. We establish the standard properties of a Q-operator, i.e. invariance of Hamiltonians, commutativity for different parameter values and that its eigenvalues satisfy an explicitly given first order ordinary difference equation in the parameter z.
Fluorescence in depth: integration of spectroscopy and imaging with Raman, IR, and CD for advanced research
Authors: Aeindartehran Lida , Sadri Zahra , Rahimi Fateme , Alinejad Tahereh 
Published: May 2024

Abstract
Fluorescence spectroscopy serves as a vital technique for studying the interaction between light and fluorescent molecules. It encompasses a range of methods, each presenting unique advantages and applications. This technique finds utility in various chemical studies. This review discusses Fluorescence spectroscopy, its branches such as Time-Resolved Fluorescence Spectroscopy (TRFS) and Fluorescence Lifetime Imaging Microscopy (FLIM), and their integration with other spectroscopic methods, including Raman, Infrared (IR), and Circular Dichroism (CD) spectroscopies. By delving into these methods, we aim to provide a comprehensive understanding of the capabilities and significance of fluorescence spectroscopy in scientific research, highlighting its diverse applications and the enhanced understanding it brings when combined with other spectroscopic methods. This review looks at each technique's unique features and applications. It discusses the prospects of their combined use in advancing scientific understanding and applications across various domains.
The effect of molecular weight of chitosan on the size of chitosan-Cu2+ complex-stabilized sulfur nanoparticles
Authors: Tran Phuoc Tho , Nguyen Hong Nhung , Le Nghiem Anh Tuan , Bui Duy Du , Nguyen Quoc Hien 
Published: May 2024

Abstract
Chitosan (CS) samples with average molecular weight (Mw) of 80.4, 61.8, and 45.2 kDa were prepared by the heterogeneous degradation of CS using 1% H2O2 solution under ambient conditions. The degree of deacetylation (DD) of the resultant CS was almost unchanged compared with that of the original CS. The sulfur nanoparticles (SNPs) were prepared by acidification of sodium thiosulfate (Na2S2O3) in a CS-Cu2+ complex solution. The influence of Mw CS on the size of SNPs was investigated. The average size of the SNPs/CS-Cu2+ complexes measured through Transmission electron microscopy (TEM) images was 25.1, 32.3, and 48.3 nm for using CS with Mw of 80.4, 61.8, and 45.2 kDa, respectively. The obtained SNPs/CS-Cu2+ complexes were also characterized by Ultraviolet-visible (UV-Vis), Fourier-transform infrared (FTIR), and x-ray diffraction (XRD) measurements. The synthetic method is favorable for large-scale production. Furthermore, the SNPs/CS-Cu2+ complex can be used as an agent for controlling plant disease in agriculture.
Developing and validating multi-omics prediction models for late patient-reported dysphagia in head and neck radiotherapy
Authors: Paetkau Owen , Weppler Sarah , Quon Harvey C , Tchistiakova Ekaterina , Kirkby Charles 
Published: May 2024

Abstract

Background and purpose. To investigate models developed using radiomic and dosiomic (multi-omics) features from planning and treatment imaging for late patient-reported dysphagia in head and neck radiotherapy. Materials and methods. Training (n = 64) and testing (n = 23) cohorts of head and neck cancer patients treated with curative intent chemo-radiotherapy with a follow-up time greater than 12 months were retrospectively examined. Patients completed the MD Anderson Dysphagia Inventory and a composite score ≤60 was interpreted as patient-reported dysphagia. A chart review collected baseline dysphagia and clinical factors. Multi-omic features were extracted from planning and last synthetic CT images using the pharyngeal constrictor muscle contours as a region of interest. Late patient-reported dysphagia models were developed using a random forest backbone, with feature selection and up-sampling methods to account for the imbalanced data. Models were developed and validated for multi-omic feature combinations for both timepoints. Results. A clinical and radiomic feature model developed using the planning CT achieved good performance (validation: sensitivity = 80 ± 27% / balanced accuracy = 71 ± 23%, testing: sensitivity = 80 ± 10% / balanced accuracy = 73 ± 11%). The synthetic CT models did not show improvement over the plan CT multi-omics models, with poor reliability of the radiomic features on these images. Dosiomic features extracted from the synthetic CT showed promise in predicting late patient-reported dysphagia. Conclusion. Multi-omics models can predict late patient-reported dysphagia in head and neck radiotherapy patients. Synthetic CT dosiomic features show promise in developing successful models to account for changes in delivered dose distribution. Multi-center or prospective studies are required prior to clinical implementation of these models.
Topological photonic encoder based on the disclination states
Authors: Si Guoxiang , Zhao Wen , Zhang Hongyu , Lu Cuicui 
Published: May 2024

Abstract
Topological disclination states are highly localized and stable by means of introducing disclination, which provide a robust platform for realizing optical information transition. A photonic encoder, as a kind of optical information transition element, can record, transmit, and protect optical information. However, there is no effective methods to realize topological photonic encoders. In this work, we propose a method to realize topological photonic encoder through topological disclination states. After the introduction of a disclination in the honeycomb structure, four types of disclination states can be generated. To demonstrate the device to carry more information, nine disclination structures with different cylindrical radii are combined, and the disclination states can be denoted by digital signals 1–4 to prepare a topological photonic encoder. In addition, to improve the security of information transition, we build an encryption algorithm based on Morse code. This work provides a new idea for the construction of encoding devices and promotes the practical application of the topological disclination states.
Design and analysis of a conical origami tube (COT) composed of quadrilateral unit cells
Authors: Jiang Cuiying , Wang Decheng , Cheng Peng , Qiu Lifang , Li Chongxiang 
Published: May 2024

Abstract
Kresling origami is a topic that is constantly being researched, especially when it comes to the cylindrical mechanisms made up of special quadrilateral units. It’s also fascinating that the conical mechanisms based on the Kresling pattern are gaining more attention lately. However, designing conical mechanisms with stable behavior and solving the stress concentration in crease areas for practical engineering applications remains less researched. Therefore, this study considers quadrilateral unit cells as the research object, designs a conical origami tube (COT), and establishes a theoretical model with five variables to systematically investigate the COT. Based on this, the design domain related to the design variables is proposed, and the COT is analyzed in three cases. We further explored the influence of η (conical degree) on the COT. In addition, this study implements a cutting design on each crease vertex to reduce the impact of stress concentration on the nonlinear response through finite element shell models and uniaxial compression experiments. The findings of this study reveal that the setting of η and the crease-cutting design have a remarkable impact on the mechanical properties and stability behavior.
Understandings of The King Can Do No Wrong in Legal Thinking and Heuristic Model of Crown Liability Derived from Them
Authors: Fortin Marie-France 
Published: May 2024

Abstract
This chapter analyses the various understandings of the king can do no wrong in legal thinking and demonstrates that a heuristic model of crown liability can be derived from them. The model elaborated for the purposes of this book is then explained, based on a conception of crown liability as having two dimensions—substantive and procedural. The model is also based on the observation that three notions associated with the king can do no wrong—the king’s status in relation to law, his perfection, and his immunity from suit—indicate how the king’s capacity to do wrong and his amenability to justice, the two dimensions of crown liability, were understood in legal thinking in given historical periods. The chapter then turns to the model’s use in facilitating the study of the historical evolution of the king can do no wrong in legal thinking in the following chapters of the book.
The King Can Do No Wrong in Legal Thinking in the Eighteenth and Nineteenth Centuries
Authors: Fortin Marie-France 
Published: May 2024

Abstract
This chapter argues that confused eighteenth- and nineteenth-century legal thinking in relation to the king can do no wrong mutated to the crown can do no wrong and led to the central government’s immunity from suit at the turn of the twentieth century. The chapter analyses important legal treatises from the eighteenth and nineteenth centuries to show how the seventeenth-century constitutional settlement understanding of the king can do no wrong was misunderstood. The chapter also throws light on Dicey’s influential notion of individual officers’ liability and its enduring consequence for the law of crown liability. The chapter analyses nineteenth- and early twentieth-century cases to demonstrate that the revival of the petition of right has led English courts to obfuscate the issue of the king’s capacity to do wrong—the substantive dimension of crown liability—and to give prominence instead to the procedural dimension of crown liability—the crown’s immunity from suit.