Eccentricity effects on acoustic radiation from a spherical source suspended within a thermoviscous fluid sphere

Acoustic radiation from a spherical source undergoing angularly periodic axisymmetric harmonic surface vibrations while eccentrically suspended within a thermoviscous fluid sphere, which is immersed in a viscous thermally conducting unbounded fluid medium, is analyzed in an exact fashion. The formulation uses the appropriate wave-harmonic field expansions along with the translational addition theorem for spherical wave functions and the relevant boundary conditions to develop a closed-form solution in form of infinite series. The analytical results are illustrated with a numerical example in which the vibrating source is eccentrically positioned within a chemical fluid sphere submerged in water. The modal acoustic radiation impedance load on the source and the radiated far-field pressure are evaluated and discussed for representative values of the parameters characterizing the system. The proposed model can lead to a better understanding of dynamic response of an underwater acoustic lens. It is equally applicable in miniature transducer analysis and design with applications in medical ultrasonics

Primary Epstein-Barr virus infection in a 40-day-old infant

Most cases of primary Epstein-Barr virus (EBV) infection during infancy and early childhood are mild or subclinical; therefore, the diagnosis of an EBV infection is not performed easily in this age group. Infectious mononucleosis (IM) is rarely reported during infancy. We report a 40-day-old infant with cervical node enlargement, cough, and coryza symptoms who was finally identified as having a case of primary IM based on the patient's clinical features and serological tests. © 2013 - IOS Press and the authors. All rights reserved

An exploration of obesity: childhood onset obesity and adult onset obesity

The prevalence of obesity in the United States can be considered alarming, given its dramatic increase over the past twenty years. A large percentage of the obese population suffers from both medical and psychological side effects. This study focused on how non-obese and obese individuals perceive one\u27s own body. Based on research, it was hypothesized that obese individuals are more likely than non-obese individuals to perceive one\u27s body negatively. It was also hypothesized that obese individuals who suffer from childhood onset obesity as opposed to adult onset obesity are more likely to perceive one\u27s body negatively. Participants were recruited from a medical office located in a middle-upper class suburban town of South Jersey. Body shape attitudes were attained through the Body Shape Questionnaire. Through a One-Way ANOVA, it was found that non-obese females view their bodies more favorably than obese females. No significant results were found to support a relationship between childhood and adult onset obesity

Convergence Analysis of Heterogeneous Decision-making Populations Under the Coordinating Best-response and Imitation Update Rules

This thesis emphasis is on coordination games. In a coordination game, selecting the same strategy or decision as the opponent is mutually beneficial for both parties. We studied the problem of equilibrium convergence in such games in both discrete and continuous (time) cases. In the first Chapter, we provide a brief introduction to the field of game theory. We discuss different categories of agents based on their levels of rationality and decision-making strategies, along with a variety of games. Additionally, we address important issues and challenges within this field. The second Chapter of this work is dedicated to a heterogeneous mixed population of imitators and best-responders. In this model, agents’ update rules are assumed to be discrete functions of time. Imitators refer to agents who simply replicate the strategy of another agent with the highest payoff, while best-responders pick the strategies that maximise their individual outcomes. Suggesting the concept of ’sections’--a consecutive sequence of agents with similar strategies– helped us in establishing convergence to an equilibrium state. This convergence was demonstrated under any arbitrary asynchronous activation sequence within a linear network. The proof was then extended to networks with ring, starike, and sparse-tree structures. However, the question of equilibrium convergence for other network structures remains an open challenge. In the third Chapter, we examined a large well-mixed population of imitators within a coordination context. Our analysis is grounded in the assumption that imitation here is driven by dissatisfaction. Equivalently, agents with lower payoffs are more dissatisfied and have more tendency to change and imitate higher earners within the population. The analysis reveals the presence of three fixed points, of which two are stable and one is a saddle point. The stable manifold of the unstable fixed point is also calculated. Additionally, It is demonstrated that starting from any initial state, the population eventually converges towards one of these introduced fixed points

Tessier number 30 clefts with congenital heart defects

Introduction: Midline cleft of mandible, classified as Tessier 30 clefts is extremely rare, with less than 100 reported cases in the latest studies. Variations in severity and associated malformations have been reported before. Case Presentation: In this report, we present the first documented Iranian case of Tessier 30 with median cleft of lower lip and bifid tongue concomitant with congenital heart defects. Conclusions: We explain embryologic origin, differential diagnosis, other associated anomalies and its treatment by reviewing literature. © 2015, Iranian Red Crescent Medical Journal

Convergence Analysis of Heterogeneous Decision-making Populations Under the Coordinating Best-response and Imitation Update Rules

This thesis emphasis is on coordination games. In a coordination game, selecting the same strategy or decision as the opponent is mutually beneficial for both parties. We studied the problem of equilibrium convergence in such games in both discrete and continuous (time) cases. In the first Chapter, we provide a brief introduction to the field of game theory. We discuss different categories of agents based on their levels of rationality and decision-making strategies, along with a variety of games. Additionally, we address important issues and challenges within this field. The second Chapter of this work is dedicated to a heterogeneous mixed population of imitators and best-responders. In this model, agents’ update rules are assumed to be discrete functions of time. Imitators refer to agents who simply replicate the strategy of another agent with the highest payoff, while best-responders pick the strategies that maximise their individual outcomes. Suggesting the concept of ’sections’--a consecutive sequence of agents with similar strategies– helped us in establishing convergence to an equilibrium state. This convergence was demonstrated under any arbitrary asynchronous activation sequence within a linear network. The proof was then extended to networks with ring, starike, and sparse-tree structures. However, the question of equilibrium convergence for other network structures remains an open challenge. In the third Chapter, we examined a large well-mixed population of imitators within a coordination context. Our analysis is grounded in the assumption that imitation here is driven by dissatisfaction. Equivalently, agents with lower payoffs are more dissatisfied and have more tendency to change and imitate higher earners within the population. The analysis reveals the presence of three fixed points, of which two are stable and one is a saddle point. The stable manifold of the unstable fixed point is also calculated. Additionally, It is demonstrated that starting from any initial state, the population eventually converges towards one of these introduced fixed points

Equilibration of Coordinating Imitation and Best-Response Dynamics

Decision-making individuals are often considered to be either imitators who copy the action of their most successful neighbors or best-responders who maximize their benefit against the current actions of their neighbors. In the context of coordination games, where neighboring individuals earn more if they take the same action, by means of potential functions, it was shown that populations of all imitators and populations of all best-responders equilibrate in finite time when they become active to update their decisions sequentially. However, for mixed populations of the two, the equilibration was shown only for specific activation sequences. It is therefore, unknown, whether a potential function also exists for mixed populations or if there actually exists a counter example where an activation sequence prevents equilibration. We show that in a linear graph, the number of ``sections'' (a sequence of consecutive individuals taking the same action) serves as a potential function, leading to equilibration, and that this result can be extended to sparse trees. The existence of a potential function for other types of networks remains an open problem

Diseño y simulación de un generador de imán permanente de rotor radial cónico de flujo axial de potencia 1.1kW para micro aerogeneradores

In this study, design, design calculations and simulation of a permanent magnet generator, which includes two sections of radialand axial flux, are discussed. The output power from the generator is 1.1 kilowatt. In the design of the generator, a cone-shapedstructure with a 90-degree cone angle of 45 degrees from the sides is used for the rotor. In order to compare the various structuresof the synchronous generator, and given that today, permanent magnet generators have been considered with regard to featuressuch as lower weight, higher yields and higher power density than other conventional generators. A finite element analysis of thegenerator developed in Maxwell software. In the radial flux section, the generator includes a conical rotor and a cone stator. Thewindings on the external stator are trapezoidal and are located in stator racks. The finite element analysis of the generator confirmsthat permanent magnet magnets designed on the inner rotor have provided a magnetic flux equal to 1.2 Tesla in the air gap betweenthe generator and the winding of the stator. The rotor magnetic field analysis, rotor magnetic field strength, magnetic field intensity,and magnetic field density at a speed of 500 rpm for cone structure have been performed. In the axial flux section, the generatorconsists of two rotors and a grooved stator, which is obtained by simulating a 1.1 kW power with a sinusoidal three-phase voltage.Two sections of radial flux with a cone-shaped rotor and axial flux side by side make up the generator

Comparison of thyme, milk thistle and cape aloe essences on the growth of Aspergillus flavus and aflatoxin B1 production

زمینه و هدف: آسپرژیلوس فلاووس (Aspergillus flavus) مهم ترین قارچ تولید کننده آفلاتوکسین B1 است. این توکسین می تواند از طریق زنجیره غذایی وارد بدن انسان شده و مسمومیت ایجاد ‌کند. این مطالعه با هدف بررسی اثر اسانس آویشن (Thymus vulgaris L.)، خارمریم (Silybum marianum L.) و صبر زرد (Aloe vera) بر رشد قارچ آسپرژیلوس فلاووس و تولید آفلاتوکسین B1 انجام شد. روش بررسی: در این مطالعه تجربی غلظت‌های صفر، 100، 200، 300 و 400 قسمت در میلیون (ppm) از اسانس گیاهان مورد مطالعه در چهار تکرار استفاده شدند. برای سنجش حداقل غلظت مهار کنندگی (MIC) و حداقل غلظت کشندگی (MFC) کلنی قارچ، از محیط کشت غنی (Yeast Extract Sucrose) استفاده شد. غلظت آفلاتوکسین B1 و اجزای عمده اسانس ها به ترتیب با استفاده از روش های کروماتوگرافی لایه نازک (TLC) و گاز کروماتوگرافی جرمی (GC-Mass) اندازه گیری شدند. یافته ها: مهمترین اجزای تشکیل دهنده اسانس های آویشن، خارمریم و آلوئه ورا به ترتیب کارواکرول، سیلی دیانین و گلوکومانان ها بودند. کمترین بازده تولید آفلاتوکسین B1 متعلق به غلظتppm 200 از اسانس آویشن بود، (001/0=P). در مقابل، بیشترین بازده تولید توکسین در تیمار حاوی ppm 100 اسانس آلوئه ورا مشاهده شد، (013/0=P). بدین ترتیب، حداقل غلظت مهار کنندگی اسانس آویشن ppm200 و حداقل غلظت کشندگی آن ppm400 برآورد شد. نتیجه گیری: هر سه اسانس آویشن، خارمریم و آلوئه ورا دارای اثر ضد قارچی بر روی آسپرژیلوس فلاووس بودند. احتمالاً ترکیبات فنولیک موجود در اسانس آویشن بیشترین فعالیت ضد قارچی را بر علیه تولید آفلاتوکسین B1 در مقایسه با دو اسانس دیگر موجب شده است. با توجه به نتایج بدست آمده به نظر می رسد، افزودن اسانس آویشن به مواد خوراکی می تواند از رشد قارچ و تولید آفلاتوکسین ممانعت کند

Utilizing Modern Experimentation Method to Quantify Jet-Breaker Dimension Effects on Drop Manhole Pool Height

Drop manholes are commonly employed in sewer and drainage systems to reduce pipes slope. The operation of these structures is dominated by their flow regime. Poor hydraulic performance of them under Regime R2 was improved with the jet-breaker, which intersects the inlet jet; yet its proper dimensions were needed to be precisely determined. In this paper, effects of jet-breaker length, width, sagitta, and angle on drop manhole pool free-surface height were experimentally studied under 80% filling ratio of the inlet pipe. The modern statistical Design of Experiment (DoE) methodology and dimensional analysis were utilized to design the experiments in accordance with the 24-1IV fractional factorial design. Consequently, nine specific jet-breakers were built and examined at two different angles, and under various flow rates. The statistical analysis of the results shown that manhole pool height was significantly decreased when jet-breaker length, width, and sagitta were 1, 1.4, and 0.7 times the inlet pipe diameter, respectively, and its angle was at 70°. The use of DoE resulted in 21% reduction in experimental runs, cost, and time, while it provided comprehensive data analysis and objective conclusion