bluuebunny/crossref_metadata_2025_split huggingface dataset:
The Megaric Possibility Paradox
Authors: Steinkrüger Philipp , Duncombe Matthew 
Published: January 2024

Abstract
In Metaphysics Theta 3 Aristotle attributes to the Megarics and unknown others a notorious modal thesis: (M) something can φ only if it is φ-ing. Aristotle does not tell us what motivated (M). Almost all scholars take Aristotle’s report to indicate that the Megarics defended (M) as a highly counterintuitive doctrine in modal metaphysics. But this reading faces several problems. First: what would motivate the Megarics to hold such a counterintuitive view? The existing literature tries, in various ways, to motivate (M) in a way neither trivial nor absurd. But, as we will argue, the main approaches end up attributing an unsustainable position to the Megarics. Second: most historical evidence for the Megaric lineage presents the group’s philosophical practice as dialectical or negative. So why think that the claim reported in Theta 3 presents a positive, and highly controversial, metaphysical claim? This paper addresses these problems by proposing a dialectical (or negative) reading of the Megarics in Theta 3. By ‘dialectical’ we here mean a mode of philosophizing that neither seeks to establish the truth or falsity of certain theses, nor takes a skeptical stance. There are different reasons why a philosopher might want to take up such a mode; in the case of the Megarics we argue that they might have wanted to put pressure on Aristotle’s idea of possibility and the ‘test’ for possibility that Aristotle mentions in several works. Reading, as we do, (M) as (part of) a paradox about possibility and actuality, we argue that the Megarics’ dialectical approach here aims to highlight a shortcoming of an intuitive conception of possibility, which underpins Aristotle’s idea of possibility and which features in his test for possibility.
On computation of Floquet-transformations and their applicability to controller synthesis for electrical machines
Authors: Gering Stefan , Manderla Maximilian 
Published: January 2024

AbstractWe consider the control of electric machines in the Floquet-frame. Its theoretical basis is known from literature, and was also applied in theory to the use case of rotating machines. In this article, we discuss practical aspects like computation of such transformation, we evaluate the potential of control thereby in simulation, and show the practical limitations of this concept by means of test bench results.
Prevalence history of morphological variants of Cerataulina resting spores in Indian Sundarbans and resultant phylogenetic analysis
Authors: Sen Sarkar Neera , Biswas Biswajit , Mandal Manjushree , Das Tapas , Sekh Sanoyaz 
Published: January 2024

Abstract
Fifteen morphological variants of resting spores of the diatom Cerataulina are presented with morphometric characters and presence in different habitats over spatial and temporal regimes in the Indian Sundarbans. Spatial regime includes phytoplankton assemblages, river-bank surface sediments and different depths of short sediment cores of adjacent deltaic landmasses. The temporal regime spans a period of 2000 years BP to present times. Though Cerataulina is sporadically mentioned in a few publications as a planktonic form in the Sundarbans, this is the first report of its different resting spores from different habitats. The 14C dating and calculated age within sediment cores suggest their existence in the system for 1996 years BP. Interestingly, even with the significant prevalence of resting spores throughout the spatial and temporal ranges, the live vegetative stage could only occasionally be documented in the phytoplankton assemblages over a period of 9 years from February 2013 to March 2023. The morphological variations of Cerataulina resting spores were subjected to cluster analysis using Dice’s Similarity Coefficient, based on the unweighted pair group method with arithmetic mean to indicate phylogenetic relationships. The results highlight two main clusters of resting spore morphotypes, namely Cerataulina bicornis (syn = Cerataulina daemon) and Syringidium simplex.
Grazing of free-living Pylaiella littoralis by the amphipod Gammarus tigrinus
Authors: Miller Steven L. , Wilce Robert T. 
Published: January 2024

Abstract

Pylaiella littoralis is a brown alga with a cosmopolitan distribution. A free-living form of the alga fouls the beaches of Nahant, Massachusetts (USA). The amphipod Gammarus tigrinus is found within the floating drifts of algae. Gut contents confirmed that G. tigrinus consumed P. littoralis. Significantly, culture studies revealed that ingested P. littoralis survives and grows from fecal pellets produced by G. tigrinus. Also, inefficient grazing produced vegetative fragments that grew and survived. δ
13C values for the amphipods and P. littoralis averaged −17.4 ‰ and −17.7 ‰, respectively, suggesting that G. tigrinus acquires most of its carbon from P. littoralis.
In vitro protective and anti-inflammatory effects of Capparis spinosa and its flavonoids profile
Authors: Alqahtani Ali S. , Nasr Fahd A. , Ahmed Mohammad Z. , Bin Mansour Muath Y. , Biksmawi Abdullah A. , Noman Omar M. , Herqash Rashed N. , Al-zharani Mohammed , Qurtam Ashraf Ahmed , Rudayni Hassan A. 
Published: January 2024

Abstract
Multiple beneficial effects have been reported to numerous species of Capparis genus. Among these, Capparis spinosa has exhibited several biological benefits, including anti-inflammatory hepatoprotective, antioxidant, and antidiabetic effects. Herein, C. spinosa was extracted with different solvents and the ability of these fractions to suppress nitric oxide (NO) production in RAW 264.7 cells were assessed via Griess reagent. The effects of C. spinosa fractions on different inflammatory markers were also determined in THP-1 and Human umbilical vein endothelial cells (HUVEC) using reverse transcription polymerase chain reaction. Additionally, high-performance liquid chromatography (HPLC) ultra-violet was employed to estimate the presence of three flavonoid compounds, namely, apigenin, kaempferol, and rutin. Our results indicate that chloroform (CHCl3) and ethyl acetate (EtOAc) fractions of C. spinosa exhibited a promising anti-inflammatory activity via in vitro inhibition of NO in lipopolysaccharide stimulated RAW 264.7 cells. Pretreated stimulated THP-1 cells with either CHCl3 or EtOAc fractions showed decreased expression of interleukin 1 beta (IL-1β) and tumor necrosis factor Alpha in a dose-dependent manner. In HUVEC cells, both fractions downregulate the expression of IL-1β, upregulate the peroxisome proliferator-activated receptor alpha PPAR-α while no significant impact was observed on PPAR-ϒ gene expression. The presence of apigenin, kaempferol, and rutin in the crude extract has been confirmed through HPLC method. Collectively, these results support the ethnopharmacological usage of C. spinosa as a potential therapy for inflammation related conditions including atherosclerosis.
Microstructural characteristics of different heat-affected zones in welded joints of UNS S32304 duplex stainless steel using the GMAW process: analysis of the pitting corrosion resistance
Authors: Morales Eduardo V. , Cruz-Crespo Amado , Pozo-Morejón Juan A. , Oria Jorge V. M. , Araujo Leonardo S. , Bott Ivani S. 
Published: January 2024

Abstract
The influence of specific microstructural characteristics on the properties of single-pass welding joints was assessed by optical processed images, transmission electron microscopy, microhardness measurements and corrosion tests conducted in various regions of the heat-affected zone (HAZ) in a lean duplex stainless steel. The welded joints were obtained with heat inputs of 1.5 and 2.5 kJ/mm using a gas metal arc welding (GMAW) process with a shielding gas enriched in Ar. Three selected regions in the HAZ showed different ferrite grain sizes and austenite fractions. The place in the welded joint where the HAZ was narrowest, and therefore experiences the highest cooling rate, is most prone to the formation of cubic CrN metastable nitrides. Conversely, the place where the HAZ was wider promotes the precipitation of stable Cr2N nitrides with more coalesced intragranular austenite (IGA) particles, where presumably random interfaces predominate. The HAZ region where the cooling rate was the highest presented more pitting corrosion resistance.
An explicit version of Bombieri’s log-free density estimate and Sárközy’s theorem for shifted primes
Authors: Thorner Jesse , Zaman Asif 
Published: January 2024

Abstract
We make explicit Bombieri’s refinement of Gallagher’s log-free “large sieve density estimate near

σ
=
1

{\sigma=1}

” for Dirichlet L-functions. We use this estimate and recent work of Green to prove that if

N
≥
2

{N\geq 2}

is an integer,

A
⊆

{
1
,
…
,
N
}

{A\subseteq\{1,\ldots,N\}}

, and for all primes p no two elements in A differ by

p
-
1

{p-1}

, then

|
A
|

≪

N

1
-

10

-
18

{|A|\ll N^{1-10^{-18}}}

. This strengthens a theorem of Sárközy.
Dynamic load prediction of charging piles for energy storage electric vehicles based on Space-time constraints in the internet of things environment
Authors: Zhou Yusong 
Published: January 2024

Abstract
This paper puts forward the dynamic load prediction of charging piles of energy storage electric vehicles based on time and space constraints in the Internet of Things environment, which can improve the load prediction effect of charging piles of electric vehicles and solve the problems of difficult power grid control and low power quality caused by the randomness of charging loads in time and space. After constructing a traffic road network model based on the Internet of Things, a travel chain model with different complexity and an electric vehicle charging model, the travel chain is randomly extracted. With the shortest travel time as a constraint, combined with the traffic road network model based on the Internet of Things, the travel route and travel time are determined. According to the State of Charge (SOC) and the travel destination, the location and charging time of the energy storage electric vehicle charging pile are determined. After obtaining the time-space distribution information of the energy storage electric vehicle charging pile at different times and in different regions, it is used as the input of the deep multi-step time-space dynamic neural network, and the network output is the dynamic electric vehicle charging pile. The experimental results show that this method can realize the dynamic load prediction of electric vehicle charging piles. When the number of stacking units is 11, the indexes of Mean Absolute Percentage Error (MAPE) and Root Mean Square Error (RMSE) are the lowest and the index of R
2 is the largest. The load of charging piles in residential areas and work areas exists in the morning and evening peak hours, while the load fluctuation of charging piles in other areas presents a decentralized change law; The higher the complexity of regional traffic network, the greater the load of electric vehicle charging piles in the morning rush hour.
Validity and reliability of parent assessments of pubertal maturation among adolescent girls in Isfahan, Iran
Authors: Mozafarian Nafiseh , Hashemipour Mahin , Maracy Mohammad Reza , Madineh Seyed Ali , Farahi Raheleh , Kelishadi Roya 
Published: January 2024

Abstract

Objectives
The current paper presents the steps considered for validation of a questionnaire for assessment of sexual maturity among Iranian adolescent girls.

Methods
This cross-sectional study was performed in 2022 in Isfahan, Iran. Based on the Growth and Development Questionnaire that included both the Pubertal Development Scale (PDS) and Sexual Maturation Scale (SMS), two Persian questionnaires were prepared. The face validity, content validity, criterion validity, and reliability of the questionnaire were assessed. We compared agreement of two parent-reported measures of puberty, SMS and PDS, with clinical Tanner stages (TSs) as the gold standard. Percent agreement, Cohen’s kappa coefficient, and Kendall’s τ b were used to assess the agreement between maternal assessments with clinical TS. The intraclass correlation coefficient (ICC) and the Cronbach’s α coefficient were also calculated to evaluate the reliability of the questionnaire.

Results
A total of 150 students aged 6–17 years with mean (SD) age of 10 (2.04) completed this study. The percentages of agreement for the mother-reported SMS in relation to clinical TS for breast stage and pubic hair stage were 60 % and 53.8 %, respectively. The percentages of agreement of the mother-reported PDS in relation to clinical TS for breast stage and pubic hair stage were 55.8 and 66 %, respectively. The weighted kappa coefficients showed moderate agreement, with weighted kappa ranging from 0.52 to 0.61. The mother-reported SMS and PDS showed high reliability. The Cronbach’s alpha of the PDS and the SMS was 0.88 and 0.83, respectively. The ICC of the mother-reported SMS and the mother-reported PDS was 0.95 (0.92–0.98) and 0.97 (0.94–0.98), respectively.

Conclusions
This study indicated that a maternal assessment of sexual maturity using the PDS or SMS can reliably estimate pubertal development in adolescent girls in an Iranian population.
Partitions for stratified sampling
Authors: Clément François , Kirk Nathan , Pausinger Florian 
Published: January 2024

Abstract
Classical jittered sampling partitions

[
0
,
1
]

d

{[0,1]^{d}}

into

m
d

{m^{d}}

cubes for a positive integer m and randomly places a point inside each of them, providing a point set of size

N
=

m
d

{N=m^{d}}

with small discrepancy.
The aim of this note is to provide a construction of partitions that works for arbitrary N and improves straight-forward constructions. We show how to construct equivolume partitions of the d-dimensional unit cube with hyperplanes that are orthogonal to the main diagonal of the cube.
We investigate the discrepancy of such point sets and optimise the expected discrepancy numerically by relaxing the equivolume constraint using different black-box optimisation techniques.
METTL3 attenuates ferroptosis sensitivity in lung cancer via modulating TFRC
Authors: Zhang Peng , Wang Su , Chen Yuanyuan , Yang Qingbo , Zhou Jian , Zang Wangfu 
Published: January 2024

Abstracts
Overexpression of methyltransferase-like 3 (METTL3) is significantly correlated with the malignancy of lung cancer (LC). In the present study, we demonstrated that METTL3 had higher levels in LC tissues relative to normal tissues. METTL3 showed superior sensitivity and specificity for diagnosis and identification of LC functions. In addition, silencing METTL3 resulted in enhanced ferroptosis sensitivity, whereas overexpression of METTL3 exhibited the opposite effect. Inhibition of METTL3 impeded LC growth in cell-derived xenografts. Further exploratory studies found that METTL3 stimulated the low expression of transferrin receptor (TFRC), which was critical for ferroptosis sensitization in LC cells induced by silenced METTL3, as silencing of TFRC caused a decrease in negative regulators of ferroptosis (FTH1 and FTL) in METTL3 knockdown A549 and PC9 cells. Finally, we confirmed that METTL3 attenuation effectively maintained the stability of TFRC mRNA. In conclusion, we reported a novel mechanism of METTL3 desensitization to ferroptosis via regulating TFRC, and an appropriate reduction of METTL3 might sensitize cancer cells to ferroptosis-based therapy.
Lithography-free directional control of thermal emission
Authors: Sarkar Mitradeep , Giteau Maxime , Enders Michael T. , Papadakis Georgia T. 
Published: January 2024

Abstract
Blackbody radiation is incoherent and omnidirectional, whereas various novel applications in renewable energy require a degree of directional control of a thermally emitted beam. So far, such directional control has required nano-structuring the surface of a thermally emitting material, typically by forming diffraction gratings. This, however, necessitates lithography and usually results in polarization-dependent properties. Here, we derive analytical conditions for highly directional thermal emission using a planar 3-layer structure analogous to a Salisbury screen. We present design rules for maximizing the directionality of such structures. Notably, these design rules pertain to both linear polarizations, thus generalizing the principles of a grating for unpolarized light. We show that the key requirement to achieve such performance is ultra-high quality factor resonances in materials supporting phonon polaritonic modes, as those found in low-dimensional materials. We propose a realistic device based on hexagonal Boron Nitride and predict performances comparable to lithography-based nano-structures.
Integrated PIN modulator and photodetector operating in the mid-infrared range from 5.5 μm to 10 μm
Authors: Nguyen Thi Hao Nhi , Turpaud Victor , Koompai Natnicha , Peltier Jonathan , Calcaterra Stefano , Isella Giovanni , Coudevylle Jean-René , Alonso-Ramos Carlos , Vivien Laurent , Frigerio Jacopo , Marris-Morini Delphine 
Published: January 2024

Abstract
This study reports the experimental demonstration of the first waveguide-integrated SiGe modulator using a PIN diode operating in a wide spectral range of the mid-infrared region. At the wavelength of 10 µm, an extinction ratio up to 10 dB is obtained in injection regime and 3.2 dB in depletion regime. High speed operation is obtained, up to 1.5 GHz. Furthermore, the device can also operate as an integrated photodetector. Photodetection has thus been characterized from 5.2 µm to 10 µm wavelengths showing an internal responsivity around 1 mA/W, and a 3 dB electro-optical bandwidth of 32 MHz. These results show a significant advancement in integrated photodetectors and electro-optical modulators for mid-infrared spectroscopy.
Collimated flat-top beam shaper metasurface doublet based on the complex-amplitude constraint Gerchberg–Saxton algorithm
Authors: Xue Dongbai , Dun Xiong , Wei Zeyong , Li DongDong , Zhu Jingyuan , Zhang Zhanyi , Wang Zhanshan , Cheng Xinbin 
Published: January 2024

Abstract
Collimated flat-top beam shapers primarily consisting of freeform lenses have a wide range of applications and pose challenges in terms of processing and integration when the diameter is less than millimeters. Metasurfaces represent a promising solution to planarize optics, can mimic any surface curvature without additional fabrication difficulty, and are suitable for flat-top optics. The conventional metasurface design approach relies on imparting the required phase using meta-atoms and encounters challenges in amplitude modulation due to near-field coupling and varying transmittances among meta-atoms with different phases, making the design of flat-top beam shapers difficult. In this paper, we propose a complex-amplitude constraint Gerchberg–Saxton algorithm for designing a collimated flat-top beam shaper metasurface doublet, which avoids the influence of strong near-field coupling on the amplitude distribution and simultaneously considers the amplitude-phase characteristics of the meta-atoms. A collimated flat-top beam with exceptional homogeneity U

p
of approximately 0.01, a wavefront error less than 0.1λ, and a transmittance higher than 86 % is experimentally obtained, comparable to commercial products based on freeform lenses. A collimated flat-top beam shaper metasurface doublet for generating flat-top beam is introduced, promoting efficient integration with laser systems.
Residual mechanical properties of concrete incorporated with nano supplementary cementitious materials exposed to elevated temperature
Authors: Tiwary Aditya Kumar , Singh Harpreet , Eldin Sayed M. , Ilyas R. A. 
Published: January 2024

Abstract
The construction industry commonly employs concrete as a construction material, which sometimes may be subjected to fire exposure. It is important to adopt fire safety measures while planning and constructing such structures to ensure the safety of the occupants and the structural integrity of the concrete. So, determining its performance at elevated temperatures is of utmost importance. The main objective of this study was to investigate the impact of mineral incorporations, namely, nano bentonite clay (NBC) and nano fly ash (NFA), on the retained properties of concrete at normal (27°C) and at elevated temperatures. The feasibility of partly substituting ordinary Portland cement utilizing a mixture of NBC (0–5%) and NFA (0–50%) in concrete was assessed under the exposure to an elevated temperature ranging from 200 to 600°C. Several parameters were examined, including compressive strength, flexural strength, split tensile capacity, water penetration, loss of mass, ultrasound pulse velocity, and microstructure properties. After the experimental analysis, it was observed that the fire endurance was shown to be improved with the inclusion of nanoparticles (BC and FA). A reduction in the loss of mass by samples subjected to elevated heat was observed with the addition of nano bentonite and NFA. The mechanical strength results were obtained as maximum for the concrete specimens with 2% NBC and 20% NFA and further, the specimens performed better when exposed to elevated temperature as compared with normal concrete specimens. The microstructure of the concrete also upgraded with better impermeability owing to the use of NBC and NFA.
Numerical investigation of the strength of Al/GFRP adhesive bonding under tensile loading
Authors: Samadi Mohammad Reza , Alaei Mohammad Hossein , Eskandari Jam Jafar 
Published: January 2024

Abstract
In this study, adhesive bonding of aluminum (Al) to glass fiber reinforced polymer (GFRP) was investigated using finite element analysis to optimize bond strength. Mechanical surface preparation has a great influence on the chemical properties (increasing surface energy and creating a stronger bond) and mechanical properties (creating mechanical interlocking and increasing friction) of adhesive bonding. Hence, the response surface method was employed to examine the influence of groove number (1, 3, 5), groove angle (0, 45, 90°), groove shape (V-shape, square, concave), and joint type (metal–metal, metal–composite, composite–composite) on the tensile strength of the bond. To simulate the bond behavior of Al/GFRP under different parameter conditions, the cohesive zone model was used to consider the crack growth. Optimization results obtained by the desirability function method showed that the maximum bond strength was achieved with a groove number of 1, groove shape of square, groove angle of 0°, and metal–metal joint type. The optimization results predicted by the desirability function and finite element analysis were in good agreement with those obtained by experimental tests.
Research on key casting process of high-grade CNC machine tool bed nodular cast iron
Authors: Chen Yang , Li Shilei , Huang Jianhua , Hu Teng , Li Xiaohu , Li Chentao , Xian Guang , Zhou Changchun , Fan Hongyuan 
Published: January 2024

Abstract
The bed structure of high-grade large-scale CNC machine tools is crucial for maintaining their long-term service accuracy. This study focused on the key casting process of large nodular cast iron beds. AnyCasting software was employed to simulate and analyze the casting scheme, and then the mold filling and solidification processes were proposed based on the simulation results. The proposed casting scheme indicates that the designed gating system exhibited excellent filling capability. The dual sprue ceramic pipe bottom pouring technique, in conjunction with the chills, not only improved casting efficiency but also met the requirements of sequential solidification design. The castings possessed a dense microstructure characterized by uniform and stable phase composition, primarily comprising lamellar pearlite, with ≤0.5% of phosphorus eutectic and cementite. Furthermore, the microstructure of these materials displayed favorable graphite morphology with a spheroidization rate exceeding 85% and spheroidization grade of 2–3. This study has important academic and application value for the casting process of producing low-stress, high-grade CNC machine tool bed cast iron materials.