Miracle-dz/UniFAR-FTUs huggingface dataset:
A Comparison Study of Titanium Dioxide and Zinc Oxide Nanoparticles for Cleaning Archaeological Pottery

Many excavations contain potsherds that have suffered from different aspects of deterioration, including salt crystallization, dirt deposition, and soot. The different stains play an important role in the deterioration of archaeological pottery, such as the disappearance of the original surface and discoloration. The present study aims to evaluate some nanoparticles in an innovative poultice form to be used to clean archaeological pottery. In this study, the nanoparticles (NPs) of titanium dioxide (TiO2) and zinc oxide (ZnO) have been prepared at 5% and in the poultice form to be used for the cleaning process of archaeological potsherds excavated from the excavation site at Abusir. Different analytical techniques, such as transmission electron microscope (TEM), digital microscope, stereomicroscope, scanning electron microscope (SEM-EDX), X-ray diffraction (XRD), and measurement of color change have been used to characterize the studied potsherds and evaluate the cleaning process. The results of the XRD analysis showed the presence of some main minerals, such as albite, quartz, diopside, hematite, spinel and chloride salt (halite). The results of the microscopic investigation used in the evaluation process revealed that using TiO2 NPs poultice perfectly removed soot and dust deposits from the surface, and the cleaned surface became smooth. The results of elemental analysis by (SEM-EDX) showed the effective reduction in the percentage of salts and soot from the treated potsherds by TiO2 NPs poultice to be 3.38% and 6.68%, respectively. The measurement of color change revealed that the treated potsherds by TiO2 NPs poultice gave the highest (ΔE*=9.41), confirming this poultice's effective role in cleaning archaeological potsherds. Based on the results of different analytical techniques used in the evaluation process, the TiO2 NPs poultice is recommended for use in the cleaning process of archaeological pottery.
The k-metric dimension of graphs: a general approach

Let $(X,d)$ be a metric space. A set $S\subseteq X$ is said to be a $k$-metric generator for $X$ if and only if for any pair of different points $u,v\in X$, there exist at least $k$ points $w_1,w_2, \ldots w_k\in S$ such that $d(u,w_i)\ne d(v,w_i),\; \mbox{\rm for all}\; i\in \{1, \ldots k\}. $ Let $\mathcal{R}_k(X)$ be the set of metric generators for $X$. The $k$-metric dimension $\dim_k(X)$ of $(X,d)$ is defined as $$\dim_k(X)=\inf\{|S|:\, S\in \mathcal{R}_k(X)\}. $$ Here, we discuss the $k$-metric dimension of $(V,d_t)$, where $V$ is the set of vertices of a simple graph $G$ and the metric $d_t:V\times V\rightarrow \mathbb{N}\cup \{0\}$ is defined by $d_t(x,y)=\min\{d(x,y),t\}$ from the geodesic distance $d$ in $G$ and a positive integer $t$. The case $t\ge D(G)$, where $D(G)$ denotes the diameter of $G$, corresponds to the original theory of $k$-metric dimension and the case $t=2$ corresponds to the theory of $k$-adjacency dimension. Furthermore, this approach allows us to extend the theory of $k$-metric dimension to the general case of non-necessarily connected graphs.
The Efficacy of Vitamin D Supplementation in Patients With Alzheimer's Disease in Preventing Cognitive Decline: A Systematic Review

To evaluate the role of vitamin D supplementation in preventing cognitive decline in patients with Alzheimer's disease (AD), five databases such as PubMed, PubMed Central (PMC), Medical Literature Analysis and Retrieval System Online (MEDLINE), ScienceDirect, and Google Scholar were searched for articles relevant to the research question with filters such as English and human studies from 2011 to 2022. Two investigators extracted the data and assessed the quality of the study using the predefined criteria. We identified 24 relevant articles after the critical screening. There were five randomized controlled trials (RCTs), two observational studies, two systematic reviews and meta-analyses, one pilot study, and 14 review articles. Most RCTs showed no significant improvement in vitamin D supplementation except for one study, which reported significant improvement in cognition on taking vitamin D in Alzheimer's disease but was not taken much into consideration as it had a small sample size (n=210) and was for a shorter duration. Another study evidenced significant improvement in Mini-Mental State Examination (MMSE) score when memantine and vitamin D were taken together compared to when memantine and vitamin D were taken independently. Studies have shown that vitamin D deficiency is associated with an increased risk of developing cognitive impairment. But there is no sufficient evidence indicating vitamin D supplementation can improve cognitive function in Alzheimer's disease.
Critical Behavior of Crystal Growth Velocity

Within a phase-field model that couples a nonconserved order parameter to the temperature field, we study the crystal growth velocity υ in a supercooled liquid as a function of the undercooling Δ. The velocity shows critical behavior in Δ depending on a the ratio p of effective diffusion constants and on δ, which measures the coupling between the order parameter and the temperature field. As Δ becomes smaller, there is a transition from steady-state growth to a diffusive regime. At the phase boundary, υ remains nonzero for p>pc; otherwise, it vanishes as (Δ - Δc)ν with ν = 1 for p<pc, ν = 1/2 for p = pc, and ν = 1/3 for p = pc and δ = δc, which corresponds to a critical point (Δc, pc, δc) in the (Δ, p, δ) parameter space. Typical experimental systems have p<pc; however, if impurity concentration gradients dominate over temperature variations, p is much larger and δ may be tuned by varying the overall impurity concentration.
The Heart as a Target of Vasopressin and Other Cardiovascular Peptides in Health and Cardiovascular Diseases

The automatism of cardiac pacemaker cells, which is tuned, is regulated by the autonomic nervous system (ANS) and multiple endocrine and paracrine factors, including cardiovascular peptides. The cardiovascular peptides (CPs) form a group of essential paracrine factors affecting the function of the heart and vessels. They may also be produced in other organs and penetrate to the heart via systemic circulation. The present review draws attention to the role of vasopressin (AVP) and some other cardiovascular peptides (angiotensins, oxytocin, cytokines) in the regulation of the cardiovascular system in health and cardiovascular diseases, especially in post-infarct heart failure, hypertension and cerebrovascular strokes. Vasopressin is synthesized mostly by the neuroendocrine cells of the hypothalamus. There is also evidence that it may be produced in the heart and lungs. The secretion of AVP and other CPs is markedly influenced by changes in blood volume and pressure, as well as by other disturbances, frequently occurring in cardiovascular diseases (hypoxia, pain, stress, inflammation). Myocardial infarction, hypertension and cardiovascular shock are associated with an increased secretion of AVP and altered responsiveness of the cardiovascular system to its action. The majority of experimental studies show that the administration of vasopressin during ventricular fibrillation and cardiac arrest improves resuscitation, however, the clinical studies do not present consisting results. Vasopressin cooperates with the autonomic nervous system (ANS), angiotensins, oxytocin and cytokines in the regulation of the cardiovascular system and its interaction with these regulators is altered during heart failure and hypertension. It is likely that the differences in interactions of AVP with ANS and other CPs have a significant impact on the responsiveness of the cardiovascular system to vasopressin in specific cardiovascular disorders.
Positive and negative transfer in analogical problem solving by 6-year-olds.

The present study of analogical transfer examined patterns of positive and negative transfer, the relationship between level of representation (specific or abstract schema) and transfer, and the effects of abstract schema training on problem solving In 6-year-olds. A total of 116 first grade subjects were assigned to five conditions: Schema Training Positive, Schema Training Negative, Story Analogue Positive, Story Analogue Negative. and Control. Six-year-olds are able to spontaneously transfer analogous solutions when base and target problems share few surface similarities. An abstract representation of the source analogue Is an important determinant of transfer; however, specific representations do not seem sufficient for transfer. Negative transfer was obtained when the transfer task Involved a solution principle different from the base problems. Schema training could effectively Improve positive transfer; however, such training did not improve the ability to discriminate the effectiveness of a solution In the negative training condition. Developmental and educational Implications are discussed, and future studies on children's analogical transfer are outlined.
Secondary Metabolites and Their Cytotoxic Activity of Artemisia nitrosa Weber. and Artemisia marschalliana Spreng.

As a promising source of biologically active substances, the Artemisia species from Kazakhstan have not been investigated efficiently. Considering the rich history, medicinal values, and availability of the Artemisia plants, systematic investigations of two Artemisia species growing in the East Kazakhstan region were conducted. In this study, one new germacrane-type sesquiterpene lactone (11), together with 10 known sesquiterpenes and its dimer, were characterized from A. nitrosa Weber. Additionally, one new chromene derivative (1’) with another 12 known compounds, including coumarins, sesquiterpene diketones, phenyl propanoids, polyacetylenics, dihydroxycinnamic acid derivatives, fatty acids, naphthalene derivatives, flavones, and caffeic acid derivatives were isolated from A. marschalliana Spreng. All compounds were isolated and identified for the first time from these two Artemisia species. The structures of new compounds (11, 1’) were established by using UV, TOFMS, LC–MS, 1D and 2D NMR spectroscopic analyses. The cytotoxicity of all isolated compounds was evaluated. As a result, all compounds did not show significant inhibition against HL-60 and A-549 cell lines. The sesquiterpenoids isolated from A. nitrosa were tested for their inhibitory activity against the LPS-induced NO release from the RAW624.7 cells, and neither of them exhibited significant activity.
On Poisson Sequences of Chance Events

In the classical applications of the theory of chance events it is usually supposed that the probability of the occurrence of k events of the given type in a time interval of length t is given by Poisson’s formula \[ v_k (t) = e^{ - \lambda t} \frac{{(\lambda t)^t }}{{k1}}\quad (\lambda > 0{\text{ a constant}}). \] Indeed, as is known, it is easy to show that this is always the case if the given sequence of events is free from after-effects and stationary, and satisfies the condition \[ (1)\quad \psi _2 (t) = o(t)\quad (t \to 0), \] where \[ \psi _k (t) = \sum\limits_{r = k}^\infty {v_r (t)} . \]In the case of a nonstationary sequence $\Lambda (t)$ will always mean the average number of events occurring in the interval $(0,t)$ (so that in the stationary case $\Lambda (t) = \lambda t$). It is usual then to write for the probability $v_k (\alpha ,\beta )$ of the occurrence of k events in the time interval $(\alpha ,\beta )$\[ (2)\quad v_k (\alpha ,\beta ) = e^{ - [\Lambda (\beta ) - \Lambda (\alpha )]} \frac{.
SDG Final Decade of Action: Resilient Pathways to Build Back Better from High-Impact Low-Probability (HILP) Events

The 2030 Sustainable Development Goals (SDGs) offer a blueprint for global peace and prosperity, while conserving natural ecosystems and resources for the planet. However, factors such as climate-induced weather extremes and other High-Impact Low-Probability (HILP) events on their own can devastate lives and livelihoods. When a pandemic affects us, as COVID-19 has, any concurrent hazards interacting with it highlight additional challenges to disaster and emergency management worldwide. Such amplified effects contribute to greater societal and environmental risks, with cross-cutting impacts and exposing inequities. Hence, understanding how a pandemic affects the management of concurrent hazards and HILP is vital in disaster risk reduction practice. This study reviews the contemporary literature and utilizes data from the Emergency Events Database (EM-DAT) to unpack how multiple extreme events have interacted with the coronavirus pandemic and affected the progress in achieving the SDGs. This study is especially urgent, given the multidimensional societal impacts of the COVID-19 pandemic amidst climate change. Results indicate that mainstreaming risk management into development planning can mitigate the adverse effects of disasters. Successes in addressing compound risks have helped us understand the value of new technologies, such as the use of drones and robots to limit human exposure. Enhancing data collection efforts to enable inclusive sentinel systems can improve surveillance and effective response to future risk challenges. Stay-at-home policies put in place during the pandemic for virus containment have highlighted the need to holistically consider the built environment and socio-economic exigencies when addressing the pandemic’s physical and mental health impacts, and could also aid in the context of increasing climate-induced extreme events. As we have seen, such policies, services, and technologies, along with good nutrition, can significantly help safeguard health and well-being in pandemic times, especially when simultaneously faced with ubiquitous climate-induced extreme events. In the final decade of SDG actions, these measures may help in efforts to “Leave No One Behind”, enhance human–environment relations, and propel society to embrace sustainable policies and lifestyles that facilitate building back better in a post-pandemic world. Concerted actions that directly target the compounding effects of different interacting hazards should be a critical priority of the Sendai Framework by 2030.
Perpetual Bermudan Continuity Corrections and a Multi-Dimensional Wiener–Hopf Type Result

Abstract In this article, Wiener–Hopf type results by Feller are generalized to higher dimensions, in order to derive bounds on the continuity corrections at the exercise boundary for certain perpetual Bermudan options on multiple assets. We assume that the vector of logarithmic price processes of the underlyings is a Lévy process under some risk-neutral measure. In addition, we have to impose the condition that the payoff functions of these perpetual Bermudans have been chosen in such a way that the corresponding optimal exercise regions of the Bermudan options are, up to translation, a half-space. (This is, of course, a fairly restrictive assumption for higher dimensions, but none for dimension one.)
Short period line profile and light variations in the Be star ω Orionis

We present the results of a multisite spectroscopic and photometric campaign on the Be star ω Orionis. From the photometry and radial velocity variation of several spectral lines, we confirm that the star is a variable with period P=0.97d. Only one period can be extracted from both the photometric and radial velocity observations. We find that the projected rotational velocity from the helium lines (vsini=173kms-1) is considerably smaller than from the metal lines (vsini=226kms-1). The line profiles show an excess absorption feature moving from blue to red for half the period and from red to blue for the other half of the period. Another excess absorption feature moves exactly out of phase. The excess absorption features are present in photospheric lines as well as in lines which are significantly affected by circumstellar material, such as Hβ. From this we conclude that the periodic variations are most probably associated with corotating circumstellar material.
Geometric random graphs and Rado sets of continuous functions

We prove the existence of Rado sets in the Banach space of continuous functions on [0,1]. A countable dense set S is Rado if with probability 1, the infinite geometric random graph on S, formed by probabilistically making adjacent elements of S that are within unit distance of each other, is unique up to isomorphism. We show that for a suitable measure which we construct, almost all countable dense sets in the subspaces of piecewise linear functions and of polynomials are Rado. Moreover, all graphs arising from such sets are of a unique isomorphism type. For the subspace of Brownian motion paths, almost all countable subsets are Rado (for a suitable measure) and the resulting graphs are of a unique isomorphism type. We show that the graph arising from piecewise linear functions and polynomials is not isomorphic to the graph arising from Brownian motion paths. Moreover, these graphs are non-isomorphic to graphs arising from Rado sets in $\mathbb{R}^n$, or the sequence spaces $c$ and $c_0$.
Impact of Digital Transformation on the Employees' Remote Working Performance: A Higher Institution Case Study

In recent years, humanity has made a quick advancement in digital technologies. It resulted in the continuous digital transformation of society and organizations. One of the benefits of digital transformation is the development of flexible work arrangements and remote modalities. However, the speedy acceleration of digital transformation and a swift shift to remote working have impacted employees' performance and welfare tremendously. This paper focuses on identifying the significance of digital transformation on remote employees' performance and well-being. The results obtained in this study show which aspects of employees' productivity have been negatively affected by digital transformation. This research employs the latent class analysis to evaluate the significance of digital transformation on employees' performance considering higher institution personnel.
Modulational instability in a full‐dispersion shallow water model

We propose a shallow water model that combines the dispersion relation of water waves and Boussinesq equations, and that extends the Whitham equation to permit bidirectional propagation. We show that its sufficiently small and periodic traveling wave is spectrally unstable to long wavelength perturbations if the wave number is greater than a critical value, like the Benjamin‐Feir instability of a Stokes wave. We verify that the associated linear operator possesses infinitely many collisions of purely imaginary eigenvalues, but they do not contribute to instability to the leading order in the amplitude parameter. We discuss the effects of surface tension. The results agree with those from a formal asymptotic expansion and a numerical computation for the physical problem.
Cross-Border Territorial Development through Geographical Indications: Gargano (Italy) and Dibër (Albania)

In a globalized context, characterized by dominant trends towards the homogenization of food products and taste, local and niche productions play a vital role in creating effective strategies of territorial development. Albanian food heritage is definitely one of the most various of the Western Balkans. The Ottoman domination and the Mediterranean position just in front of Italy led to an incredible mix of cultures and traditions. As Albania is a candidate to join the European Union, it has a stronger opportunity of protecting its excellent-quality food products with PDO and PGI marks. Moreover, Albania’s territory shares fundamental features with Gargano lakes, especially with relation to the county of Dibër, where Ulez and Shkopet lakes are located. Both the areas’ traditional food products are and can be an important factor of sustainable and participatory development, and the present contribution aims at exploring possible paths of territorial development at a cross-border level, in the framework of a sort of “dialogue” between the two regions through Geographical Indications (GIs).
Integrable systems in 4D associated with sixfolds in Gr(4,6)

Let $Gr(d,n)$ be the Grassmannian of $d$-dimensional linear subspaces of an $n$-dimensional vector space $V$. A submanifold $X\subset Gr(d, n)$ gives rise to a differential system $\Sigma(X)$ that governs $d$-dimensional submanifolds of $V$ whose Gaussian image is contained in $X$. We investigate a special case of this construction where $X$ is a sixfold in $Gr(4, 6)$. The corresponding system $\Sigma(X)$ reduces to a pair of first-order PDEs for 2 functions of 4 independent variables. Equations of this type arise in self-dual Ricci-flat geometry. Our main result is a complete description of integrable systems $\Sigma(X)$. These naturally fall into two subclasses. (1) Systems of Monge-Amp\`ere type. The corresponding sixfolds $X$ are codimension 2 linear sections of the Pl\"ucker embedding $Gr(4,6)\subset\mathbb{P}^{14}$. (2) General linearly degenerate systems. The corresponding sixfolds $X$ are the images of quadratic maps $\mathbb{P}^6- Gr(4, 6)$ given by a version of the classical construction of Chasles. We prove that integrability is equivalent to the requirement that the characteristic variety of system $\Sigma(X)$ gives rise to a conformal structure which is self-dual on every solution. In fact, all solutions carry hyper-Hermitian geometry.
Aloe Vera-Fermented Beverage Ameliorates Obesity and Gut Dysbiosis in High-Fat-Diet Mice

Aloe vera has been proven to have various medicinal properties, including anti-inflammatory and anti-obesity functions. However, the effects of Aloe vera-fermented beverages (AFB) on obesity and its complications are still not clear. In this study, HepG2 cells in high-fat environment and high-fat diet (HFD) mice were used to investigate the potential obesity-preventing function of AFB. We found that AFB intervention decreased the amount of lipid droplets of HepG2 cells, suppressed the body weight gain and adipose accumulation, and reduced the serum contents of total cholesterol (TC), alanine aminotransferase (ALT), and interleukin 10 (IL-10) of HFD-mice. In addition, it also changed the composition of the gut microbiota. The ratio of Firmicutes/Bacteroidetes was decreased, while the relative abundance of Muribaculaceae, Alistipes and Rikenellaceae_RC9_gut_group was increased after the administration of AFB compared with HFD-mice. These results demonstrated that AFB can prevent diet-induced obesity (DIO) and provides a new option to modulate obesity-related gut dysbiosis.
A Registration-Error-Resistant Swath Reconstruction Method of ZY1-02D Satellite Hyperspectral Data Using SRE-ResNet

ZY1-02D is a Chinese hyperspectral satellite, which is equipped with a visible near-infrared multispectral camera and a hyperspectral camera. Its data are widely used in soil quality assessment, mineral mapping, water quality assessment, etc. However, due to the limitations of CCD design, the swath of hyperspectral data is relatively smaller than multispectral data. In addition, stripe noise and collages exist in hyperspectral data. With the contamination brought by clouds appearing in the scene, the availability is further affected. In order to solve these problems, this article used a swath reconstruction method of a spectral-resolution-enhancement method using ResNet (SRE-ResNet), which is to use wide swath multispectral data to reconstruct hyperspectral data through modeling mappings between the two. Experiments show that the method (1) can effectively reconstruct wide swaths of hyperspectral data, (2) can remove noise existing in the hyperspectral data, and (3) is resistant to registration error. Comparison experiments also show that SRE-ResNet outperforms existing fusion methods in both accuracy and time efficiency; thus, the method is suitable for practical application.