cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Taguchi optimization for water defluoridation by thermally treated biosorbent developed from the waste snail shells
Creators: name: Mukkanti, Veera Brahmam
name: Tembhurkar, A. R.
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biochemistry
subject: Cell Biology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: Marine Biology
subject: Cancer
subject: Inorganic Chemistry
subject: FOS: Chemical sciences
subject: Computational Biology

description: Developing adsorbents from waste materials for water defluoridation is gaining vast interest to help cost-effective and sustainable water treatment. The current study attempts to develop a new adsorbent from the waste snail shells by thermal treatment (900 °C ± 5 °C for 3 hours), and the experiments were carried out to investigate its feasibility for fluoride removal. The process parameters were optimized using L16 orthogonal array of Taguchi technique to acquire the maximum F− removal. The sorption capacity of 10.417 mg/g and a maximum F− removal of 90.41% was achieved for snail shell sorbent at pH: 7 ± 0.1, snail shell dose: 10 g/L, agitation time: 60 minutes, the temperature: 313 K ± 1 K, and initial F−: 15 mg/L. ANOVA indicates the process variable’s contribution toward F− removal in descending order as initial F- (42.32%) > pH (27.09%) > dose (11.23%) > time (9.71%) > temperature (9.65%). The Freundlich isotherm and a second order kinetic model were best fitted for F− sorption onto snail shell sorbent. Thermodynamic constants revealed spontaneous and endothermic sorption onto snail shell sorbent. The surface morphology, functional groups, and crystallinity of the sorbent were studied with SEM, FTIR, and XRD analysis. The sorption–elution study with 0.1 NaOH indicates the reusability of the adsorbent up to 4 cycles. Conclusively, the waste-derived adsorbent from the waste snail shells is found potentially quite feasible for water defluoridation, adds commercial value to the waste material, and helps in cleaner production through proper waste utilization.
Soluplus-stabilized 5-fluorouracil-entrapped niosomal formulations prepared via active and passive loading techniques: comparative physico-chemical evaluation
Creators: name: Ugorji, Onyinyechi Lydia
name: Okoye, Olisa Ivy
name: Nwangwu, Chinekwu
name: Agbo, Chinazom Precious
name: Kenechukwu, Franklin Chimaobi
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biochemistry
subject: Space Science
subject: Pharmacology
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Science Policy
subject: Sociology
subject: FOS: Sociology

description: The objective of this study was to prepare and conduct a comparative analysis on 5-fluorouracil (5FU) niosomes stabilized with or without Soluplus, utilizing, respectively, passive loading and active loading techniques. Cholesterol was combined with Span 40 and Tween 40 surfactants to prepare several niosomal formulations by either passive or active methods. Encapsulation efficiency (EE%), loading capacity (LC), mean particle sizes, polydispersity indices (PDI), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), pH stability, and in vitro drug release in bio relevant media of pH 1.2, 6.8, and 7.4 were employed to evaluate the formulations. Batches made using the active loading approach (B1-B5) demonstrated higher entrapment efficiency (25–40%) (p ˂ 0.05) than those made using the passive loading method (20%) (with the exception of batch A1). In comparison to niosomes made using the passive loading method, the active loading methodology produced niosomes with a lower PDI (˂ 0.25) and particle size (˂ 70 nm). SEM revealed spherical and discrete vesicles for the Soluplus stabilized niosomes. Both approaches produced niosomes with prominent hydrogen bonding as observed in the FTIR study. The formulations were stable and sustained drug release, but the active loading strategy imparted a more sustained release pattern than the passively loaded one. Soluplus stabilized niosomes demonstrated higher (p ˂ 0.05) drug release (60–70%) in all release media. Based on the production of smaller particle sizes and narrower size distribution, the active loading strategy may be a more effective way to load hydrophilic medicines such as 5FU into niosomes.
BioExcel Webinar #12 - How to choose compute resources for your team
Creators: name: Larcombe, Lee
Publisher: name: Zenodo
Year: 2017
Subjects: webinar

description: BioExcel’s webinar series continued on 8th March with Lee Larcombe from ELIXIR-UK and the University of Edinburgh, who took us through the benefits and challenges of using local compute resources. Starting from some things to consider when resourcing your research, to what can feasibly be done on a laptop or desktop computer, a workstation, up to a local clusters. What considerations need to be taken into account, CPU, memory, storage, network speed and importantly, how to recognise when you have hit the limits of local computing.
Clustering and assembly dynamics of a one-dimensional microphase former
Creators: name: Hu, Yi
name: Charbonneau, Patrick
Publisher: name: arXiv
Year: 2018
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: Both ordered and disordered microphases ubiquitously form in suspensions of particles that interact through competing short-range attraction and long-range repulsion (SALR). While ordered microphases are more appealing materials targets, understanding the rich structural and dynamical properties of their disordered counterparts is essential to controlling their mesoscale assembly. Here, we study the disordered regime of a one-dimensional (1D) SALR model, whose simplicity enables detailed analysis by transfer matrices and Monte Carlo simulations. We first characterize the signature of the clustering process on macroscopic observables, and then assess the equilibration dynamics of various simulation algorithms. We notably find that cluster moves markedly accelerate the mixing time, but that event chains are of limited help in the clustering regime. These insights will guide further study of three-dimensional microphase formers.
Correlation lengths in quasi-one-dimensional systems via transfer matrices
Creators: name: Hu, Yi
name: Fu, Lin
name: Charbonneau, Patrick
Publisher: name: arXiv
Year: 2018
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Using transfer matrices up to next-nearest-neighbour (NNN) interactions, we examine the structural correlations of quasi-one-dimensional systems of hard disks confined by two parallel lines and hard spheres confined in cylinders. Simulations have shown that the non-monotonic and non-smooth growth of the correlation length in these systems accompanies structural crossovers (Fu et al., Soft Matter, 2017, 13, 3296). Here, we identify the theoretical basis for these behaviour. In particular, we associate kinks in the growth of correlation lengths with eigenvalue crossing and splitting. Understanding the origin of such structural crossovers answers questions raised by earlier studies, and thus bridges the gap between theory and simulations for these reference models.
description: 9 pages, 7 figures
Equilibrium and dynamic surface properties of cationic/anionic surfactant mixtures based on alcohol ether sulfate
Creators: name: Li, Ping
name: Ren, Xiaodan
name: Chen, Yongqiang
name: Zhang, Zhengwei
name: Kang, Jin
name: Li, Yuxia
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biophysics
subject: Physical Sciences not elsewhere classified
subject: Medicine
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Computational Biology

description: The equilibrium and dynamic surface properties of anionic surfactant alcohol ether sulfate with different EO distribution(C-AE2S and N-AE2S) and cationic surfactant tetradecyltrimethylammonium bromide (TTAB) mixtures under different molar ratios were investigated. Their surface activities, adsorption, and spreading performances were investigated by static/dynamic surface tension measurements, molecular dynamics simulation, and dynamic contact angle techniques at 298 K. The static surface tension analysis reveals that the critical micellization concentration (cmc) values and the surface tension at cmc (γcmc) of the binary systems are much lower than that of the individual component. Compared with C-AE2S/TTAB, N-AE2S/TTAB systems have higher cmc and lower γcmc. It was found from the molecular dynamics simulation that negative charges of C-AE2S were drastically neutralized by the positively-charged TTAB at the interface in the system of C-AE2S/TTAB. The dynamic surface tension results indicate that the adsorption process of aqueous solutions for both C-AE2S/TTAB and N-AE2S/TTAB are mixed diffusion-kinetic adsorption mechanisms. From the dynamic contact angle measurements, it could be obtained that the mixtures exhibit better spreading behavior than that of the individual component and N-AE2S/TTAB systems have lower contact angles than that of C-AE2S/TTAB at the same mixing ratios.
Temperature dependent micellization behavior of as synthesized anionic SAILs in aqueous nonionic polymer solutions: conductivity, UV-visible probe and antimicrobial studies
Creators: name: Chauhan, Suvarcha
name: Manish
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biophysics
subject: Biochemistry
subject: Physical Sciences not elsewhere classified
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Immunology
subject: FOS: Clinical medicine
subject: Biological Sciences not elsewhere classified
subject: Cancer
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Virology

description: As synthesized surface active ionic liquids (SAILs), Tetrapropylammonium Dodecylsulfate (TPADS), and Tetrabutylammonium Dodecylsulfate (TBADS) have been characterized by FTIR, 1H-NMR and 13C-NMR spectroscopic techniques. Conductometric and UV-Visible probe investigations have been attempted to study the aggregation behavior of these synthesized SAILs in aqueous solution of polymers Polyvinylpyrrolidone (PVP) and Polyethylene glycol (PEG) at different temperatures and concentrations. Two breaking points were identified from κ vs [SAILs] plots. First, the critical aggregation concentration (CAC) is recognized with the polymer-SAILs binding and the second being regarded as critical micellar concentration (CMC), suggested to represent saturation point for Polymer-SAIL aggregation. Thermodynamic parameters of micellization (ΔGmo,ΔHmo andΔSmo) are rationalized in terms of interactions prevailing between hydrophobic and hydrophilic regions of SAIL-Polymer system. Micellization process for the blend of SAIL-PVP is found to be more favored than SAIL-PEG at all temperatures. Further, the effect of PVP on the antimicrobial activities of TPADS/TBADS has been tested by measuring zone of inhibition which accounts for higher effectiveness of PVP-SAILs system against gram positive bacteria (Bacillus cereus and Staphylococcus aureus) as compared to gram negative bacteria (Pseudomonas aeruginosa).
Evolutionary, Mean-Field and Pressure-Resistance Game Modelling of Networks Security
Creators: name: Katsikas, Stamatios
name: Kolokoltsov, Vassili
Publisher: name: arXiv
Year: 2018
Subjects: subject: Optimization and Control (math.OC)
subject: FOS: Mathematics

description: The recently developed mean-field game models of corruption and bot-net defence in cyber-security, the evolutionary game approach to inspection and corruption, and the pressure-resistance game element, can be combined under an extended model of interaction of large number of indistinguishable small players against a major player, with focus on the study of security and crime prevention. In this paper we introduce such a general framework for complex interaction in network structures of many players, that incorporates individual decision making inside the environment (the mean-field game component), binary interaction (the evolutionary game component), and the interference of a principal player (the pressure-resistance game component). To perform concrete calculations with this overall complicated model we work in three basic asymptotic regimes; fast execution of personal decisions, small rates of binary interactions, and small payoff discounting in time. By this approach we construct a class of solutions having the so-called turnpike property.
The character of the warm ionised medium
Creators: name: Geyer, Marisa
name: Walker, Mark
Publisher: name: arXiv
Year: 2018
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: $\textit{Herschel}$ observations of far infrared N$^+$ emission lines have demonstrated that dense plasma, with $n_e\sim30\,{\rm cm^{-3}}$, is ubiquitous in the inner Galactic plane. By combining the information from $\textit{Herschel}$ with other tracers of ionised gas, we build a picture of this dense plasma. We adopt a collisional ionisation model, so the analysis is not tied to a specific energisation mechanism. We find that the dense plasma is concentrated in a disk that is $130\;{\rm pc}$ thick, and makes a significant contribution to radio pulsar dispersion measures in the inner Galactic plane. The strength of the far infrared N$^+$ emission requires high temperatures in the plasma, with $T \simeq 19{,}000\,{\rm K}$ indicated both by the ratio of N$^+$ to C$^+$, and by the ratio of N$^+$ to microwave bremsstrahlung in the inner Galactic plane. This parallels the situation at high Galactic latitudes, where strong optical emission is observed from N$^+$ (and S$^+$), relative to both H$α$ and microwave bremsstrahlung, and suggests a common origin. If so, the same gas provides a natural explanation for the extreme radio-wave scattering phenomena that are sometimes observed in pulsars and quasars. We therefore propose a new picture of the warm ionised medium as seen in emission, in which the plasma is dense, hot, and localised in numerous structures of size $\sim 10^2\,{\rm AU}$ that are clustered around stars.
description: 17 pages, 14 figures, Accepted to MNRAS
Exploring the role of biopolymers and surfactants on the electrical conductivity of water-based CuO, Fe3O4, and hybrid nanofluids
Creators: name: Mane, Nikhil S.
name: Hemadri, Vadiraj
name: Tripathi, Siddhartha
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biophysics
subject: Biochemistry
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences

description: The research on the application of nanofluids in the thermal management of electric components is gaining widespread attention. In this context, and as past studies on nanofluids mainly focus on thermal properties, the investigation of the electrical properties of nanofluids has become important. The role of dispersants on the electrical conductivity of nanofluids stabilized using two biopolymer dispersants, chitosan, and gum arabica (GA), and a synthetic dispersant Sodium Dodecyl Benzoic Sulfate (SDBS) is investigated in this work. The nanofluids are prepared with water, nanoparticles (0.1 wt%), and dispersants (0.05 and 0.5 wt%), and the electrical conductivity is measured to examine the role of nanoparticle materials (CuO, Fe3O4, and CuO + Fe3O4), dispersants, and temperatures (25–40 °C). According to observations, the dispersants significantly affect the electrical conductivity, while nanoparticle material has a minimal impact. At 0.5 wt% concentration, SDBS stabilized nanofluids have electrical conductivity 708.7 times higher than water, whereas, with chitosan and GA, it is 144.2 and 12.8 times higher than water, respectively. CuO-water nanofluids show relatively higher electrical conductivity than Fe3O4 and hybrid CuO + Fe3O4 water nanofluids. Measured electrical conductivity is used for regression analysis using response surface methodology (RSM). Three quadratic nonlinear polynomial equations are developed to predict the electrical conductivity based on the input parameters (dispersant concentration and temperature). The predicted and measured values were in excellent agreement with each other. The current study offers a novel perspective on the electrical behavior of nanofluids with biopolymer dispersants and provides a prediction model for nanofluid electrical conductivity.
A min-max characterization of Zoll Riemannian metrics
Creators: name: Mazzucchelli, Marco
name: Suhr, Stefan
Publisher: name: arXiv
Year: 2018
Subjects: subject: Differential Geometry (math.DG)
subject: Algebraic Topology (math.AT)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 53C22, 58E10

description: We characterize the Zoll Riemannian metrics on a given simply connected spin closed manifold as those Riemannian metrics for which two suitable min-max values in a finite dimensional loop space coincide. We also show that on odd dimensional Riemannian spheres, when certain pairs of min-max values in the loop space coincide, every point lies on a closed geodesic.
description: 24 pages, 1 figure; version 2: Theorem 1.1 now stated for manifolds homeomorphic to odd-dimensional spheres (the original statement was correct, but indeed the assumptions made on the manifold forced it to be a topological sphere according to Bott-Samelson theorem and the Poincar\'e conjecture); minor correction in the centered equation before (5.5)
On the intrinsic volumes of intersections of congruent balls
Creators: name: Bezdek, Károly
Publisher: name: arXiv
Year: 2018
Subjects: subject: Metric Geometry (math.MG)
subject: FOS: Mathematics

description: Let ${\mathbb E}^d$ denote the $d$-dimensional Euclidean space. The $r$-ball body generated by a given set in ${\mathbb E}^d$ is the intersection of balls of radius $r$ centered at the points of the given set. In this paper we prove the following Blaschke-Santaló-type inequalities for $r$-ball bodies: for all $1\leq k\leq d$ and for any set of given volume in ${\mathbb E}^d$ the $k$-th intrinsic volume of the $r$-ball body generated by the set becomes maximal if the set is a ball. As an application we investigate the Gromov-Klee-Wagon problem for congruent balls in ${\mathbb E}^d$, which is a question on proving or disproving that if the centers of a family of $N$ congruent balls in ${\mathbb E}^d$ are contracted, then the volume of the intersection does not decrease. In particular, we investigate this problem for uniform contractions, which are contractions where all the pairwise distances in the first set of centers are larger than all the pairwise distances in the second set of centers, that is, when the pairwise distances of the two sets are separated by some positive real number. The author and M. Naszódi [Discrete Comput. Geom. 60/4 (2018), 967-980] proved that the intrinsic volumes of the intersection of $N$ congruent balls in ${\mathbb E}^d$, $d>1$ increase under any uniform contraction of the center points when $ N\geq \left(1+\sqrt{2}\right)^d$. We give a short proof of this result using the Blaschke-Santaló-type inequalities of $r$-ball bodies and improve it for $d\geq 42$.
description: 7 pages
Health managers in B.C., part 2 : who manages our system? - sociodemographic characteristics, employment patterns, educational background and training of health managers
Creators: name: Kazanjian, Arminée, 1947-
name: Jackson, C.
name: Pagliccia, N.
Publisher: name: Health Human Resources Unit (HHRU); Health Manpower Research Unit
Year: 2014

description: The objective of this study was to provide, for the first time, detailed information on the health managers of one province, using a comprehensive yet precise definition, one that would be easy to quantify. In addition, the study was designed to solicit information on organizational size and structure.
Temperature-dependent non-covalent protein-protein interactions explain normal and inverted solubility in a mutant of human gamma D-crystallin
Creators: name: Khan, Amir R.
name: James, Susan
name: Quinn, Michelle K.
name: Altan, Irem
name: Charbonneau, Patrick
name: McManus, Jennifer J.
Publisher: name: arXiv
Year: 2018
Subjects: subject: Biomolecules (q-bio.BM)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Biological Physics (physics.bio-ph)
subject: FOS: Biological sciences
subject: FOS: Physical sciences

description: Protein crystal production is a major bottleneck for the structural characterisation of proteins. To advance beyond large-scale screening, rational strategies for protein crystallization are crucial. Understanding how chemical anisotropy (or patchiness) of the protein surface due to the variety of amino acid side chains in contact with solvent, contributes to protein protein contact formation in the crystal lattice is a major obstacle to predicting and optimising crystallization. The relative scarcity of sophisticated theoretical models that include sufficient detail to link collective behaviour, captured in protein phase diagrams, and molecular level details, determined from high-resolution structural information is a further barrier. Here we present two crystals structures for the P23TR36S mutant of gamma D-crystallin, each with opposite solubility behaviour, one melts when heated, the other when cooled. When combined with the protein phase diagram and a tailored patchy particle model we show that a single temperature dependent interaction is sufficient to stabilise the inverted solubility crystal. This contact, at the P23T substitution site, relates to a genetic cataract and reveals at a molecular level, the origin of the lowered and retrograde solubility of the protein. Our results show that the approach employed here may present an alternative strategy for the rationalization of protein crystallization.
Boundary value problems of elliptic operators and reduction to the boundary techniques
Creators: name: Ehsani, Dariush
Publisher: name: arXiv
Year: 2018
Subjects: subject: Complex Variables (math.CV)
subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics
subject: 35J25, 35S15, 32W25

description: We study properties of pseudodifferential operators which arise in their use in boundary value problems. Smooth domains as well as intersections of smooth domains are considered.
description: final version; to appear in Complex Variables and Elliptic Equations
Association between network characteristics and bicycle ridership across a large metropolitan region
Creators: name: Beck, Ben
name: Pettit, Chris
name: Winters, Meghan
name: Nelson, Trisalyn
name: Vu, Hai L.
name: Nice, Kerry
name: Seneviratne, Sachith
name: Saberi, Meead
Publisher: name: Taylor & Francis
Year: 2024
Subjects: subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Science Policy

description: Numerous studies have explored associations between bicycle network characteristics and bicycle ridership. However, the majority of these studies have been conducted in inner metropolitan regions and as such, there is limited knowledge on how various characteristics of bicycle networks relate to bicycle trips within and across entire metropolitan regions, and how the size and composition of study regions impact on the association between bicycle network characteristics and bicycle ridership. We conducted a retrospective analysis of household travel survey data and bicycle infrastructure in the Greater Melbourne region, Australia. Seven network metrics were calculated (length of the bicycle network, betweenness centrality, degree centrality, network density, network coverage, intersection density and average weighted slope) and Bayesian spatial models were used to explore associations between these network characteristics and bicycle ridership. We demonstrated that bicycle ridership was associated with several network characteristics, and that these characteristics varied according to the outcome (count of the number of trips made by bike or the proportion of trips made by bike) and the size and characteristics of the study region. These findings challenge the utility of approaches based on spatially modeling network characteristics and bicycle ridership when informing the monitoring and evaluation of bicycle networks. Further efforts are required to be able to quantify network characteristics that reflect the myriad of factors that influence comfort and safety for people of all ages and abilities.
On the Bauer-Furuta and Seiberg-Witten invariants of families of $4$-manifolds
Creators: name: Baraglia, David
name: Konno, Hokuto
Publisher: name: arXiv
Year: 2019
Subjects: subject: Differential Geometry (math.DG)
subject: Geometric Topology (math.GT)
subject: FOS: Mathematics
subject: 57R57, 57R22

description: We show how the families Seiberg-Witten invariants of a family of smooth $4$-manifolds can be recovered from the families Bauer-Furuta invariant via a cohomological formula. We use this formula to deduce several properties of the families Seiberg-Witten invariants. We give a formula for the Steenrod squares of the families Seiberg-Witten invariants leading to a series of mod $2$ relations between these invariants and the Chern classes of the spin$^c$ index bundle of the family. As a result we discover a new aspect of the ordinary Seiberg-Witten invariants of a $4$-manifold $X$: they obstruct the existence of certain families of $4$-manifolds with fibres diffeomorphic to $X$. As a concrete geometric application, we shall detect a non-smoothable family of $K3$ surfaces. Our formalism also leads to a simple new proof of the families wall crossing formula. Lastly, we introduce $K$-theoretic Seiberg-Witten invariants and give a formula expressing the Chern character of the $K$-theoretic Seiberg-Witten invariants in terms of the cohomological Seiberg-Witten invariants. This leads to new divisibility properties of the families Seiberg-Witten invariants.
description: 76 pages, accepted version. To appear in J. Topology
PARENTAL’S PRESSURE AND THE DEVELOPMENT OF ANXIETY DISORDER IN YOUNG ATHLETES: A SYSTEMATIC REVIEW
Creators: name: Pereira, Ana Carolina Moura
name: Silva, Iolanda
name: Fernandes, Vilson
Publisher: name: OSF Registries
Year: 2024
Subjects: subject: Medicine and Health Sciences

description: This systematic review aims to see if there is a connection between the effect of parental pressure on the development of anxiety disorders in young athletes. We pretend to know if there are risk factors in gender, age, type of sport or socioeconomic state.
Cosmological aspects of a hyperbolic solution in $f(R,T)$ gravity
Creators: name: Nagpal, Ritika
name: Singh, J. K.
name: Beesham, A.
name: Shabani, Hamid
Publisher: name: arXiv
Year: 2019
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: This article deals with a cosmological scenario in $ f(R,T) $ gravity for a flat FLRW model of the universe. We consider the $ f(R,T) $ function as $ f(R)+f(T) $ which starts with a quadratic correction of the geometric term $ f(R) $ having structure $ f(R)=R+αR^2 $, and a linear matter term $ f(T)=2λT $. To achieve the solution of the gravitational field equations in the $ f(R,T) $ formalism, we take the form of a geometrical parameter, i.e. scale factor $ a(t)= sinh^{\frac{1}{n}}(βt) $ \cite{cha}, where $ β$ and $ n $ are model parameters. An eternal acceleration can be predicted by the model for $ 0
description: 23pages, 27 figures
Reachability analysis of linear hybrid systems via block decomposition
Creators: name: Bogomolov, Sergiy
name: Forets, Marcelo
name: Frehse, Goran
name: Potomkin, Kostiantyn
name: Schilling, Christian
Publisher: name: arXiv
Year: 2019
Subjects: subject: Systems and Control (eess.SY)
subject: Dynamical Systems (math.DS)
subject: Optimization and Control (math.OC)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Mathematics

description: Reachability analysis aims at identifying states reachable by a system within a given time horizon. This task is known to be computationally expensive for linear hybrid systems. Reachability analysis works by iteratively applying continuous and discrete post operators to compute states reachable according to continuous and discrete dynamics, respectively. In this paper, we enhance both of these operators and make sure that most of the involved computations are performed in low-dimensional state space. In particular, we improve the continuous-post operator by performing computations in high-dimensional state space only for time intervals relevant for the subsequent application of the discrete-post operator. Furthermore, the new discrete-post operator performs low-dimensional computations by leveraging the structure of the guard and assignment of a considered transition. We illustrate the potential of our approach on a number of challenging benchmarks.
description: Accepted at EMSOFT 2020
Hardy-space function theory, operator model theory, and dissipative linear systems: the multivariable, free-noncommutative, weighted Bergman-space setting
Creators: name: Ball, Joseph A.
name: Bolotnikov, Vladimir
Publisher: name: arXiv
Year: 2019
Subjects: subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 47A13, 47A45, 47A48, 47B32, 46E22, 93B28

description: It is known that (i) a subspace ${\mathcal N}$ of the Hardy space $H^2$ which is invariant under the backward shift operator can be represented as the range of the observability operator of a conservative discrete-time linear system, (ii) the transfer-function of this conservative linear system in turn is the inner Beurling-Lax representer for the forward-shift invariant subspace ${\mathcal M} : = {\mathcal N}^\perp$, and (iii) this transfer function also serves as the Sz.-Nagy-Foias characteristic function of the pure contraction operator $T$ given by $T = P_{\mathcal N} M_z |_{\mathcal N}$. The main focus of this paper is to present the extension of this structure to a more general setting. The Hardy space is replaced by the full weighted Bergman-Fock space of formal power series in $d$ freely noncommutative indeterminates, where the shift is replaced by the right shift tuple, where the conservative/dissipative discrete-time linear system becomes a certain type of conservative/dissipative multidimensional linear system with time-varying weights and with evolution along a rooted tree with each node having $d$ forward branches, where a backward shift-invariant subspace ${\mathcal N}$ is the range of the observability operator for such a weighted-Bergman multidimensional linear system, and where the transfer function of this system is the Beurling-Lax representer for the forward shift-invariant subspace ${\mathcal M} = {\mathcal N}^{[\perp]}$, and where this transfer function also serves as the characteristic function for the operator tuple having hypercontractive-operator-tuple adjoint equal to the restriction of the backward-shift tuple to $\mathcal N$.
Production of nisin from Lactococcus lactis in acid-whey with nutrient supplementation
Creators: name: Vijayakumar, Sahana
name: G., Vishnu
name: Krishnapura, Prajna Rao
name: Iyyaswami, Regupathi
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biochemistry
subject: Microbiology
subject: FOS: Biological sciences
subject: Pharmacology
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: Biological Sciences not elsewhere classified

description: The production of Nisin, an FDA-approved food preservative, was attempted by Lactococcus lactis subsp. lactis ATCC® 11454 using the underutilized milk industry effluent, acid-whey, as a substrate. Nisin production was further improved by studying the effect of supplementation of nutrients and non-nutritional parameters. The addition of yeast extract (6% w/v) as nitrogen source and sucrose (4% w/v) as carbon source were found to be suitable nutrients for the maximum nisin production. The changes in the medium pH due to lactic acid accumulation during batch fermentation and its influence on the production of nisin were analyzed in the optimized whey medium (OWM). The production characteristics in OWM were further compared with the nisin production in MRS media. The influence of nisin as an inducer for its own production was also studied and found that the addition of nisin at 0.22 mg/ml promote the nisin production. The analysis of consumption of various metal ions present in the OWM during the nisin production was also analyzed, and found that the copper ions are the most consumed ion. The highest nisin yield of 2.6 × 105 AU/mL was obtained with OWM.
NIX – Neuroscience information exchange format
Creators: name: Martone, Maryann
name: Gerkin, Richard
name: Moucek, Roman
name: Das, Samir
name: Wojtek Goscinski
name: Hellgren-Kotaleski, Jeanette
name: Kennedy, David
name: Leergaard, Trygve
name: Jyl Boline
name: Abrams, Mathew
Publisher: name: F1000 Research Limited
Year: 2020

description: The purpose of this document is to solicit community feedback on the Neuroscience information exchange format (NIX), a data standard for electrophysiology. This document contains the INCF standards and best practices committee's review of NIX, and the criteria in which it was evaluated (open, FAIR, testing and implementation, governance, adoption and use, stability and support, and comparison to similar standards). For the next 60 days, we are seeking community feedback on NIX.

About NIX: The NIX data model allows storing fully annotated scientific datasets, i.e. the data together with rich metadata and their relations in a consistent, comprehensive format. Although developed originally for electrophysiology data, neither the data model nor the model for metadata are domain-specific to electrophysiology, but both models can be linked to predefined or custom terminologies which enables the user to give elements of the models a domain-specific, semantic context. Its aim is to achieve standardization by providing a common data structure and APIs for a multitude of data types and use cases, focused on but not limited to neuroscience. In contrast to most other approaches, the NIX approach is to achieve this flexibility with a minimum set of data model elements. The NIX project includes native I/O libraries for C++ and Python, language bindings for Java and MATLAB and a viewer for NIX data files, although the HDF5 viewer can also be used.
Kaiser Family Foundation Poll: January 2022 COVID-19 Vaccine Monitor
Creators: name: Kaiser Family Foundation
Publisher: name: Roper Center for Public Opinion Research
Year: 2022

description: Biggest problem facing the United States (1); feelings about the current state of the coronavirus (COVID-19) pandemic in the United States (5); concern about you or a loved-one contracting COVID-19 (6); COVID-19 vaccines/boosters (12); vaccine mandates (1); wearing masks in public/social distancing (7); variant outbreaks (9); concern about societal impacts of COVID-19 (2); COVID-19 tests (15); clarity of CDC guidelines (2); COVID-19 and children (13); vaccinating children (8); has tested positive for COVID-19 (3); inevitability of most people in U.S. contracting COVID-19 (2); health insurance (3); anyone in household has chronic health condition (1); has received flu shot for current flu season (1).
Quantum Pin Codes
Creators: name: Vuillot, Christophe
name: Breuckmann, Nikolas P.
Publisher: name: arXiv
Year: 2019
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We introduce quantum pin codes: a class of quantum CSS codes. Quantum pin codes are a generalization of quantum color codes and Reed-Muller codes and share a lot of their structure and properties. Pin codes have gauge operators, an unfolding procedure and their stabilizers form so-called $\ell$-orthogonal spaces meaning that the joint overlap between any $\ell$ stabilizer elements is always even. This last feature makes them interesting for devising magic-state distillation protocols, for instance by using puncturing techniques. We study examples of these codes and their properties.
description: 21 pages, 10 figures
Purification and biochemical characterization of pullulanase produced from Bacillus sp. modified by ethyl-methyl sulfonate for improved applications
Creators: name: Olaniyi, Oladipo O.
name: Oriade, Blessing
name: Lawal, Olusola T.
name: Ayodeji, Adeyemi O.
name: Olorunfemi, Yetunde O.
name: Igbe, Festus O.
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biophysics
subject: Biochemistry
subject: Physical Sciences not elsewhere classified
subject: Microbiology
subject: FOS: Biological sciences
subject: Cell Biology
subject: Genetics
subject: Molecular Biology
subject: Biotechnology
subject: Chemical Sciences not elsewhere classified
subject: Plant Biology

description: Strain improvement via chemical mutagen could impart traits with better enzyme production or improved characteristics. The present study sought to investigate the physicochemical properties of pullulanase produced from the wild Bacillus sp and the mutant. The pullulanases produced from the wild and the mutant Bacillus sp. (obtained via induction with ethyl methyl sulfonate) were purified in a-three step purification procedure and were also characterized. The wild and mutant pullulanases, which have molecular masses of 40 and 43.23 kDa, showed yields of 2.3% with 6.0-fold purification and 2.0% with 5.0-fold purification, respectively, and were most active at 50 and 40 °C and pH 7 and 8, respectively. The highest stability of the wild and mutant was between 40 and 50 °C after 1 h, although the mutant retained greater enzymatic activity between pH 6 and 9 than the wild. The mutant had a decreased Km of 0.03 mM as opposed to the wild type of 1.6 mM. In comparison to the wild, the mutant demonstrated a better capacity for tolerating metal ions and chelating agents. These exceptional characteristics of the mutant pullulanase may have been caused by a single mutation, which could improve its utility in industrial and commercial applications.
Production of tannase from a newly isolated yeast, Geotrichum cucujoidarum using agro-residues
Creators: name: Thangavelu, Nishanthini
name: Jeyabalan, Jothika
name: Veluchamy, Ajithkumar
name: Belur, Prasanna D.
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biochemistry
subject: Space Science
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Ecology
subject: Biological Sciences not elsewhere classified

description: With an aim of producing commercially important tannase enzyme using cheap and readily available agro-residues, leaves of Indian Gooseberry (Phyllanthus emblica) and Jamun (Syzygium cumini), peels of Lemon (Citrus limon), and Pomegranate (Punica granatum) were screened. Newly isolated Geotrichum cucujoidarum was utilized for the study. Preliminary studies indicated that tannase titer obtained is not proportional to the tannin content of the agro-residues and solid state fermentation superior compared to submerged fermentation. Jamun mixed with lemon peel in equal proportion supplemented with minerals under solid-state fermentation gave a tannase titer of 15.46 U/g dry solids. Through successful implantation of Plackett–Burman design, yeast extract concentration, inoculum volume, and amount of substrate were found to be the most significant factors. Further optimization of these three factors through Response Surface Methodology resulted in the 1.7-fold increase in tannase titer. Validation experiments using 3.97 g of Jamun leaves + lemon peel powder mixed with a nutrient solution having (w/v) yeast extract − 1.1%, dextrose − 3%, Urea − 1.125%, potassium chloride − 0.1%, magnesium sulfate heptahydrate − 0.1% with the initial pH of 5, inoculated with 2.48 ml of inoculum gave a tannase titer of 26.43 U/g dry solids after 6 days of solid-state fermentation.
Coloring count cones of planar graphs
Creators: name: Dvořák, Zdeněk
name: Lidický, Bernard
Publisher: name: arXiv
Year: 2019
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: For a plane near-triangulation $G$ with the outer face bounded by a cycle $C$, let $n^\star_G$ denote the function that to each $4$-coloring $ψ$ of $C$ assigns the number of ways $ψ$ extends to a $4$-coloring of $G$. The block-count reducibility argument (which has been developed in connection with attempted proofs of the Four Color Theorem) is equivalent to the statement that the function $n^\star_G$ belongs to a certain cone in the space of all functions from $4$-colorings of $C$ to real numbers. We investigate the properties of this cone for $|C|=5$, formulate a conjecture strengthening the Four Color Theorem, and present evidence supporting this conjecture.
description: 18 pages, 9 figures
ОПТИМИЗАЦИЯ ХИРУРГИЧЕСКОГО ЛЕЧЕНИЯ ПОСЛЕОПЕРАЦИОННЫХ ВЕНТРАЛЬНЫХ ГРЫЖ
Creators: name: Бахриев, Бахром
name: Атоева, Мохигул
name: Усмонов, Амирбек
name: Давлатов, Зариф
Publisher: name: Zenodo
Year: 2024

description: Несмотря на динамическое развитие медицинской науки, проблема лечения вентральной грыжи остается актуальной [7, 11, 18]. Несмотря на стремительное развитие малоинвазивных эндовидеохирургических технологий в абдоминальной хирургии, количество оперативных вмешательств с использованием традиционного лапаротомного доступа остается высоким, после которых в 4-18% случаев развиваются послеоперационные вентральные грыжи (ПОВГ), а в общей статистической структуре всех вентральных грыж ПОВГ составляют 20-26% [3, 7, 10, 13, 20].
A viable supply chain model for managing panic-buying related challenges: lessons learned from the COVID-19 pandemic
Creators: name: Rahman, Towfique
name: Paul, Sanjoy Kumar
name: Agarwal, Renu
name: Shukla, Nagesh
name: Taghikhah, Firouzeh
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Medicine
subject: Molecular Biology
subject: Environmental Sciences not elsewhere classified
subject: Sociology
subject: FOS: Sociology
subject: Biological Sciences not elsewhere classified
subject: Science Policy
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: The COVID-19 pandemic exposed the vulnerabilities of global supply chains (SCs) and highlighted the need for more resilient and viable SCs. Panic-buying, in particular, has been a major challenge for SCs as it can create sudden surges in demand that are difficult to anticipate and manage. However, the literature lacks viable SC models and strategies to address panic-buying related challenges. As such, this research aims to identify and model viable recovery strategies to increase SC’s agility, resilience, and survivability and reduce panic-buying’s impact during a large-scale disruption in critical SCs. This study contributes by developing an integrated agent-based modeling (ABM) and optimisation method to simulate the behaviour of SCs under different scenarios and evaluating the effectiveness of four proposed strategies and three recovery plans. The findings reveal that increasing production at decentralised manufacturing facilities can be achieved by increasing order frequency to multiple suppliers and by partnering with third-party transporters, which can mitigate the effects of panic-buying. This results in higher output and availability of essential goods in the market, significantly managing panic-buying related challenges. Lastly, the study recommends practical solutions for businesses to enhance their SCs’ responsiveness to sudden demand surges from panic-buying.
Perceptions and realities : medical and surgical procedure variation : a literature review
Creators: name: Sheps, Samuel Barry
name: Scrivens, S
name: Gait, Jennifer Mary
Publisher: name: Centre for Health Services and Policy Research (CHSPR)
Year: 2014

description: We undertook an in-depth literature review with the overall goal of assessing the current state of knowledge of procedure variations in medical and surgical practice with particular reference to research attempting to assess the impact of specific variables on the variation observed. Our explicit objectives were to review the recent literature using explicit a priori criteria in order to: 1) identify papers using sound methodology; 2) determine the magnitude of variation found to exist and whether there is consistency in this estimate across studies; 3) determine, in general and for specific procedures, which factors seem consistently related to variations (if any); and 4) identify directions for future research.
Making $K_{r+1}$-Free Graphs $r$-partite
Creators: name: Balogh, József
name: Clemen, Felix Christian
name: Lavrov, Mikhail
name: Lidický, Bernard
name: Pfender, Florian
Publisher: name: arXiv
Year: 2019
Subjects: subject: Combinatorics (math.CO)
subject: FOS: Mathematics

description: The Erdős-Simonovits stability theorem states that for all ε>0 there exists α>0 such that if G is a K_{r+1}-free graph on n vertices with e(G) > ex(n,K_{r+1}) - αn^2, then one can remove εn^2 edges from G to obtain an r-partite graph. Füredi gave a short proof that one can choose α=ε. We give a bound for the relationship of αand \varepsilon which is asymptotically sharp as ε\to 0.
description: 12 pages, 1 figure
The Watermelon Meow Meow Outbreak: Enhancing Public Health Education Through Real-World Experience, Statistical Programming, and Infectious Disease Modeling
Creators: name: McAndrew, Thomas
name: Frounfelker, Rochelle L.
name: Servitje, Lorenzo
Publisher: name: Taylor & Francis
Year: 2024
Subjects: Medicine
Science Policy
Mental Health

description: There is a need for public health undergraduates to acquire skills in data collection, statistical programming, and infectious diseases modeling. Public health officials and accreditation bodies underline the importance of a cumulative, “real-world” experience as part of a student's education. The Watermelon Meow Meow (WMM) outbreak is a cumulative experience that teaches upper-level undergraduate/graduate students about infectious disease dynamics by asking students to: participate in a fictitious outbreak; collect and analyze outbreak data. Innovative to our approach is the use of DataCamp as a technology to support learning statistical programming and framing WMM under principles of Universal Design Learning (UDL). We evaluated 27/32 student responses using a mixed-methods approach. We found WMM: augmented traditional lecture-style instruction and increased student awareness of heterogeneous risks associated with infectious diseases. We identified three student typologies: students who learn best from (i) integrating traditional lecture plus WMM, (ii) participating in WMM data collection but not coding, and (iii) from lecture and classroom-based learning from peers. WMM is an example of a more general approach – which we call Slate, Operate, Translate – that instructors can follow to combine technology and a hands-on experiment to satisfy both UDL principles and increasing demands of public health education in a mathematics/statistics class.