Miracle-dz/UniFAR-FTUs huggingface dataset:
Design of chemically modified bacteriorhodopsin films for information protection systems

The object of this study is the processes of interaction of fragments of purple membranes with certain chemicals, which affect the photochromic properties of bacteriorhodopsin films. This paper considers the possibility of modifying the properties of bacteriorhodopsin films by changing their chemical composition, which will make it possible to use such films to protect information. For this purpose, it has been determined which optical properties of bacteriorhodopsin are most important for its use in the field of information protection; films were made using various chemicals as impurities. It was shown that the introduction of impurities does not affect the absorption spectrum of bacteriorhodopsin, which indicates that it retains its properties. It has been established that impurity substances are evenly distributed in films. By studying the dynamics of photoinduced changes in films with different concentrations of chemical components, the effect of chemical modification on the photocycle of bacteriorhodopsin and the properties of film structures based on it was studied. Based on the results of experimental studies, it was found that by changing the chemical composition of films, it is possible to change the time of storage of the information recorded on them in the range from several to hundreds of seconds continuously. The sensitometric sensitivity of film structures also depends on the chemical composition and can vary in the range from 3.9·10–3 to 54·10–3 m2/J. At the same time, chemical modification is simpler from a technological point and cheaper from a financial point of view compared to other methods that make it possible to achieve similar results. The reported results suggest that chemically modified films based on bacteriorhodopsin have great potential for practical application in the field of information protection and access control
Effect of acute and chronic administration of hot water extract of P. Americana on some metabolic parameters in diabetic rats

The challenge of comorbid diseases and especially their management. Posing greater challenge are phytomedical approach without proper scientific testing and more also paucity of modern equipment for research and funding. The need to authenticate medicinal herbs used in the management of Diabetes Mellitus (DM) as one of the common metabolic diseases becomes imperative. This study aimed at evaluating the effect of acute and chronic administration of hot water extract of P. americana on some metabolic parameters in diabetic rats. Thirty young adult healthy male albino rats (wistar strain) weighing between 205-251 g were made diabetic by administration of 80 mg/kg streptozotocin (STZ). The animals were divided into two equal groups of 15 rats each, singly placed in metabolic cages for the acute and chronic treatments studies. The rats were further divided into three groups of 5 animals each and treated with different concentrations of stem-bark hot water extract of Persea americana (HWE-PA) and distilled water while the body weight, food intake, faecal output, water intake and urine output were measured and recorded daily for a period of 5 days for the acute and 28 days for the chronic treatments. Results showed a higher percentage change in body weights, higher food intake and faecal output and lower values in water intake and urine output in both acute and chronic administration of HWE-PA to STZ-induced hyperglycaemic rats compared to the control groups. Both acute and chronic administration of Hot water extract of the stem-bark animals extracts of Persea americana (HWE-PA) presented antidiabetic activity STZ-induced hyperglycaemic rats as evident its ameliorating effect on the body weight, food intake, faecal output, water intake and urine output in STZ-induced hyperglycaemic rats, thus supports its phytomedicine use as an antidiabetic agent.
Curved String Topology and Tangential Fukaya Categories II

Author(s): Pomerleano, Daniel | Advisor(s): Teleman, Constantin | Abstract: For manifolds $M$ with a specific rational homotopy type, I study a non-commutative Landau-Ginzburg model whose underlying ring is the differential-graded algebra (dga) $B=C_*(\Omega(M))$, that is chains on the based loop space with Pontryagin product and with potential $W$ in $B$. For $M=\mathbb{C}P^{n_1}\times \mathbb{C}P^{n_2} \times \ldots \mathbb{C}P^{n_k}$ or $S^{n_1} \times S^{n_2} \times \ldots S^{n_k}$, we explain how the field theories we define have a Fukaya category interpretation.
Seven-Level Cascaded H-Bridge Multilevel Single-Phase Inverter Implemented with an ATMEGA Microprocessor

An inverter is a power electronics circuit that can convert DC power into AC power. Inverters have a wide range of applications, from battery-powered devices to renewable energy systems such as photovoltaics. Typically, inverters rely on switching devices to create an AC signal. In most cases, these switching devices are arranged in the form of an H-bridge, the circuit topology taking its name from the arrangement of the switching devices. Although most inverters rely on utilizing a single H-bridge to achieve either two or three voltage levels, the use of multiple H-bridges increases levels as well as voltage. This proves to be advantageous when trying to reduce total harmonic distortion (THD). A low-cost multilevel (ML) single-phase inverter based on a cascade of H-bridge connections and PWM voltages was developed using an ATMEGA microprocessor. The ML inverter can supply up to 30 W with an RMS output voltage of 120 V, 60 Hz, and a THD less than 30% without a lowpass filter. An 18 V battery per level provided the primary DC voltage. This document presents simulation and experimental results when the ATMEGA-based inverter prototype was tested under various lighting load technologies, including linear loads such as filament and nonlinear loads such as compact fluorescent lighting (CFL) and light-emitting diode (LED).
Comparative Study of Rotor Topologies for Synchronous Reluctance Motor Based on Many-Objective Optimization

In this paper, we report a new rotor topology of the reluctance synchronous motor (SynRM) with auxiliary flux barriers. In order to analyze the performance of the new topology, SynRM models with the auxiliary flux barriers are compared to traditional SynRM models. At this time, each model is optimized considering five characteristics: 1) specific power, 2) torque ripple, 3) efficiency, 4) total harmonic distortion of voltage, and 5) power factor. For the purpose of simultaneously optimizing the five characteristics, a many-objective optimization, NSGA-III, is applied. Moreover, the two-dimensional finite element method is employed for the precise simulation of the motor performance.
Non-commutative Toric Varieties

In this note we introduce a new family of non-commutative spaces that we call non-commutative toric varieties and we describe some of their main properties. The main technical tool in this investigation is a natural extension of LVM-theory for the irrational case. In order to introduce the moduli space of (non-commutative) toric varieties we use variations on the notion of diffeology as models for non-commutative spaces.
Research on Heat Dissipation Characteristics of PM in-wheel Motor Using Electrical-Thermal Bi-Directional Coupling Method

In this paper, the heat dissipation characteristics and electromagnetic performance of a proposed PM in-wheel motor is investigated based on electrical-thermal bi-directional coupling method. Firstly, the heat source of the motor is calculated, including stator and rotor core loss, winding copper loss and permanent magnet eddy current loss. The steady-state temperature distribution of the motor under natural cooling condition is calculated using the electrical-thermal unidirectional coupling method. And the electromagnetic performance of the motor with and without considering the bi-directional coupling method. In addition, the steady-state temperature distribution of the motor at different water flow rates is calculated and compared, so as to determine the optimal water flow rate. The electromagnetic performance of the motor at the optimal water flow rate is analyzed by the electrical-thermal bi-directional coupling method. The results show that the water-cooling method can effectively reduce the temperature rise of the motor and improve the performance of the motor, and the effectivenss of the electrical-thermal bi-directional coupling analysis method can be verified.
Minimal genus problem for T2–bundles over
surfaces

For any positive integer $g$, we completely determine the minimal genus function for $\Sigma_{g}\times T^{2}$. We show that the lower bound given by the adjunction inequality is not sharp for some class in $H_{2}(\Sigma_{g}\times T^{2})$. However, we construct a suitable embedded surface for each class and we have exact values of minimal genus functions.
Performance Enhancement Using Robust Sliding Mode Approach-Based Current Control for PMVG-WECS

Conventional current control (CC) has been utilized to control the converter's voltage in a wind energy conversion system (WECS) due to its ease of implementation. However, mismatched machine parameters and slow-dynamic response can reduce total system performance. To deal with this issue, this study proposes a robust sliding mode approach-based CC scheme for machine side converter and grid side converter of a grid-connected permanent magnet vernier generator (PMVG). To do this, a direct-drive grid-connected PMVG-based WECS is firstly modeled using a back-to-back converters. Currently, the voltage control references to the converters have been designed using a proportional-integral (PI)-type sliding surface with a modified version of the improved reaching law-based on sliding mode control (SMC) theory. As a result, smooth $dq$-axes voltage references are obtained, which leads to a better steady-state and transient performance from the overall system. Further, the reduced chattering achieves an improved total harmonic distortion reduction in grid current, significantly enhancing the power quality. Then, the Lyapunov stability is derived to verify the reachability condition for the proposed scheme. Finally, the proposed controller is compared with PI and existing SMC methods through simulation and experimental setup of a 5-kW PMVG system.
l-adic realization of some aspect of Landau-Ginzburg B-models

The Landau-Ginzburg B-model for a germ of a holomorphic function with an isolated critical point is constructed by K. Saito and finished by M. Saito. Douai and Sabbah construct the Landau-Ginzburg B-models for some Laurent polynomials. The construction relies on analytic procedures, and one can not expect it can be done by purely algebraic method. In this note, we work out the l-adic realization of the algebraic part of the construction.
Hyperbolic jigsaws and families of pseudomodular groups I

We show that there are infinitely many commensurability classes of pseudomodular groups, thus answering a question raised by Long and Reid. These are Fuchsian groups whose cusp set is all of the rationals but which are not commensurable to the modular group. We do this by introducing a general construction for the fundamental domains of Fuchsian groups obtained by gluing together marked ideal triangular tiles, which we call hyperbolic jigsaw groups.
Rotational Virtual Knots and Quantum Link Invariants

This paper studies rotational virtual knot theory and its relationship with quantum link invariants. Every quantum link invariant for classical knots and links extends to an invariant of rotational virtual knots and links. The paper sets up the background virtual knot theory, defines rotational virtual knot theory, studies an extension of the bracket polynomial and the Manturov parity bracket for rotationals. We give examples of links that are not detected by the bracket polynomial but are detected by the extended parity bracket. Then the general frameworks for oriented and unoriented quantum invariants are introduced and formulated for rotational virtual links. The paper ends with a section on quantum link invariants in the Hopf algebra framework where one can see the naturality of using regular homotopy combined with virtual crossings (permutation operators), as they occur significantly in the category associated with a Hopf algebra. We show how this approach via categories and quantum algebras illuminates the structure of invariants that we have already described via state summations. In particular, we show that a certain non-trivial link L has trivial functorial image. This means that this link is not detected by any quantum invariant formulated as outlined in this paper. We show earlier in the paper that the link L is a non-trivial rotational link using the parity bracket. These calculations with the diagrammatic images in quantum algebra show how this category forms a higher level language for understanding rotational virtual knots and links. There are inherent limitations to studying rotational virtual knots by quantum algebra alone.
Eliminate obstructions: curves on a 3-fold

By using higher K-theory, we reinterpret and generalize an idea on eliminating obstructions of deformation of cycles, which is known to Mark Green, Phillip Griffiths and TingFai Ng. As an application, we show how to eliminate obstructions of deformation of curves on a 3-fold in an explicit way. This answers affirmatively an open question by TingFai Ng.
Characterizing the Back-Contact Interface of Bi-Facial Poly-Crystalline CdTe Devices Using Transmission Electron Microscopy

Poly-crystalline Cd(Se)Te based thin film solar cells have shown to be competitive in terms of efficiency and cost of electricity production. Yet, the presence of hetero-interfaces in Cd(Se)Te structure and low minority carrier lifetime have limited the thin film devices from reaching their maximum theoretical efficiency of approximately 30 percent. The back-contact of CdSeTe devices has been identified as one significant limitation to increased device performance since no metal has been identified that has a sufficiently high work function to create an Ohmic contact with the CdTe absorber at the back-surface of the film stack. Here, we will explore novel back-contact film layers in an effort to overcome this energy band mismatch. Atomic-resolution imaging in a scanning transmission electron microscope (STEM) combined with electron energy-loss spectroscopy (EELS) and energy-dispersive X-ray spectroscopy (XEDS) are used to characterize these devices and to inform the production process. The goal is to identify the ideal atomic and electronic structures, as well as any interfacial diffusion of elements.
Effects of essential oil coated with glycerol monolaurate on growth performance, intestinal morphology, and serum profiles in weaned piglets

Objective This study aimed to investigate the effects of essential oil coated with glycerol monolaurate (GML) on the growth performance, intestinal morphology, and serum profiles of weaned piglets. Methods A total of 144 weaned piglets (Duroc×[Landrace×Yorkshire], average weight 8.07±3.33 kg) were randomly assigned to three groups with six replicate pens and eight piglets per pen: i) CON: a corn-soybean basal diet; ii) LEG: with 1,000 mg/kg essential oil coated with GML; and iii) HEG: with 2,000 mg/kg essential oil coated with GML. Results Results showed that average daily gain was increased (p<0.05) linearly by essential oil coated with GML supplementation on day 14 to 28 and day 0 to 28 compared with the CON group. Dietary supplementation with HEG increased (p<0.05) total antioxidant capacity and catalase activity on day 14, and immunoglobulin A (IgA) and IgM concentration on day 28 and tended to increase IgG on day 28. In addition, the crypt depth in the jejunum was reduced (p<0.05), and villus height and villus height/crypt depth in the ileum were increased (p<0.05) in the HEG group compared with the CON group. Moreover, lower (p<0.05) concentrations of tumor necrosis factor-α, interferon-γ, interleukin-1β (IL-1β), IL-8, and IL-10 were observed in the jejunum of piglets supplemented with HEG compared with the CON group. In addition, dietary HEG tended to decrease IL-6 level in the jejunum of piglets compared with the CON group. Conclusion Dietary essential oil coated with GML can improve growth performance of weaned piglets. Moreover, supplementing 2,000 mg/kg essential oil coated with GML was demonstrated to improve antioxidant ability, and intestinal morphology, and reduce jejunal inflammatory factor levels.
Knockdown of lncRNA HOXD-AS2 Improves the Prognosis of Glioma Patients by Inhibiting the Proliferation and Migration of Glioma Cells

Objective Increasing studies reported that long noncoding RNAs are involved in regulating glioma progression. However, the specific roles and mechanisms of lncRNAs in glioma remain unclear. Here, we sought to explore the functions of HOXD-AS2 in glioma progression. Methods Gene expressions of lncRNAs in 5 normal brain tissue specimens and 5 glioblastoma tissue specimens were detected by gene expression profile chip technology. Bioinformatic analysis was performed to see whether differential expression of lncRNAs played any significant role in glioma occurrence and progression. The relationship between HOXD-AS2 level and clinical prognosis of the patients was analyzed. HOXD-AS2 was specifically interfered with by siRNA technology to observe its effects on U251 cell growth, proliferation, apoptosis, and invasion. Results The expression level of HOXD-AS2 gene in glioma was significantly higher than that in the normal brain tissue, which was related to the tumor grade. The level of HOXD-AS2 gene in patients with high-grade glioma was higher than that in patients with low-grade glioma. High expression of HOXD-AS2 gene was a risk factor for poor prognosis of glioma patients. Knocking down the expression of HOXD-AS2 in glioma cell line U251 arrested the cell cycle and reduced the cell proliferation. Furthermore, it could significantly reduce the migration ability of the cells but had no significant effect on the invasion. Conclusion HOXD-AS2 is an oncogenic lncRNA associated with the poor prognosis of glioma. Knockdown of HOXD-AS2 may reduce the growth of glioma, which may provide a new avenue for treatment.
Effects of a functional fatty acid blend on growth performance, intestinal morphology, and serum profiles in weaned piglets

Objective The objective of this study was to determine whether dietary supplementation with a functional fatty acid blend (FA) that contains 31.4% butyric acid and 4.99% medium-chain FA improve growth performance, antioxidant capacity, immunity status, and anti-inflammatory ability in weaned piglets. Methods One hundred and forty-four healthy piglets (Duroc×Landrace×Yorkshire) with an average body weight (BW) of 7.98±3.43 kg were randomly divided into three groups with six replicate pens and eight piglets per pen: Normal control (NC): a corn-soybean basal diet; FA1: a basal diet supplemented with 1,000 mg/kg of a functional FA; FA2: a basal diet supplemented with 2,000 mg/kg of a functional FA. The experiment lasted for 28 d. On d 14 and 28, one piglet in each pen from NC and FA2 groups was randomly selected for antioxidative index and immunoglobulins. On d 28, one piglet in each pen from NC and FA2 groups was randomly selected for intestinal morphology and inflammatory factor. Results We observed that FA supplementation linearly increased (p<0.05) average daily gain and the final BW. There was higher (p<0.05) catalase on d 14, and immunoglobulin (Ig) A and IgM on d 28 in piglets supplemented with FA2 than in the NC group. Moreover, dietary FA2 reduced (p<0.05) crypt depth of ileum in piglets. The concentrations of tumor necrosis factor-α, interleukin (IL)-1β, IL-8, and IL-10 in jejunum were lower (p<0.05) in the FA2 group compared with the NC group. Conclusion Therefore, the overall results suggests that the FA may help to improve gut health, antioxidant status, and immune parameters resulting in the improvement of growth performance.
Mean field games models of segregation

This paper introduces and analyzes some models in the framework of mean field games (MFGs) describing interactions between two populations motivated by the studies on urban settlements and residential choice by Thomas Schelling. For static games, a large population limit is proved. For differential games with noise, the existence of solutions is established for the systems of partial differential equations of MFG theory, in the stationary and in the evolutive case. Numerical methods are proposed with several simulations. In the examples and in the numerical results, particular emphasis is put on the phenomenon of segregation between the populations.
Absolutely continuous spectrum for random Schrödinger operators on the Bethe strip

The Bethe strip of width m is the cartesian product \documentclass{article}\usepackage{amssymb}\begin{document}\pagestyle{empty}$\mathbb {B}\times \lbrace 1,\ldots ,m\rbrace$\end{document}, where \documentclass{article}\usepackage{amssymb}\begin{document}\pagestyle{empty}$\mathbb {B}$\end{document} is the Bethe lattice (Cayley tree). We prove that Anderson models on the Bethe strip have “extended states” for small disorder. More precisely, we consider Anderson‐like Hamiltonians \documentclass{article}\usepackage{amssymb}\begin{document}\pagestyle{empty}$H_\lambda =\frac{1}{2} \Delta \otimes 1 + 1 \otimes A\,+\,\lambda \mathcal {V}$\end{document} on a Bethe strip with connectivity K ≥ 2, where A is an m × m symmetric matrix, \documentclass{article}\usepackage{amssymb}\begin{document}\pagestyle{empty}$\mathcal {V}$\end{document} is a random matrix potential, and λ is the disorder parameter. Given any closed interval \documentclass{article}\usepackage{amssymb}\begin{document}\pagestyle{empty}$I\subset \big (\! -\! \sqrt{K}+a_{{\rm max}},\sqrt{K}+a_{\rm {min}}\big )$\end{document}, where amin and amax are the smallest and largest eigenvalues of the matrix A, we prove that for λ small the random Schrödinger operator Hλ has purely absolutely continuous spectrum in I with probability one and its integrated density of states is continuously differentiable on the interval I.
Twisted cubics on cubic fourfolds and stability conditions

We give an interpretation of the Fano variety of lines on a cubic fourfold and of the hyperkahler eightfold, constructed by Lehn, Lehn, Sorger and van Straten from twisted cubic curves in a cubic fourfold non containing a plane, as moduli spaces of Bridgeland stable objects in the Kuznetsov component. As a consequence, we reprove the categorical version of Torelli Theorem for cubic fourfolds, we obtain the identification of the period point of LLSvS eightfold with that of the Fano variety, and we discuss derived Torelli Theorem for cubic fourfolds.
An application of continuous logic to fixed point theory

In aiming to apply to a broader class of examples the Avigad-Iovino "ultraproducts and metastability" approach to obtaining uniformity for convergence of sequences, we construct a framework using continuous logic that in particular is able to handle discontinuous functions in its domain of discourse. This setup weakens the usual continuity requirements for functions, but compensates for the loss of control by introducing a notion of "linear structure" that captures in a quite general way the situation of having geodesics between every pair of points, and has as a special case the vector space structure of Banach spaces. We use this to apply the Avigad-Iovino method to specific convergence results from functional analysis involving iterations of discontinuous functions, and so obtain uniform metastable convergence in those results.