Improved transport equations including correlations for electron-phonon systems. Comparison with exact solutions in one dimension

We study transport equations for quantum many-particle systems in terms of correlations by applying the general formalism developed in an earlier paper to exactly soluble electron-phonon models. The one-dimensional models considered are the polaron model with a linear energy dispersion for the electrons and a finite number of electrons and the same model including a Fermi sea (Tomonaga-Luttinger model). The inclusion of two-particle correlations shows a significant and systematic improvement in comparison with the usual non-Markovian equations in Born approximation. For example, the improved equations take into account the renormalization of the propagation by the self-energies to second order in the coupling.Comment: 20 pages, 15 Postscript figures, uses RevTeX, to be published in: Annals of Physics (N.Y.

REWARD-RELATED EFFECTS OF AMPHETAMINES ADMINISTERED BY ELECTRONIC CIGARETTE

While e-cigarette vaporizers are primarily used for the delivery of nicotine, they can also be used to administer a wide range of other substances of abuse including stimulants such as d-amphetamine and methamphetamine. Methamphetamine and prescription amphetamines are widely abused throughout the United States and across the world leading us to believe there may be abuse potential with vaping methamphetamine as vaping becomes increasingly popular. In the present study, methamphetamine and amphetamine vapor were assessed using vapor capture methods. The vapor samples were then analyzed using liquid chromatography mass spectroscopy (LC-MS). Three experiments were carried out to examine the abuse potential of vaping methamphetamine. The first experiment was a locomotor assay, to determine if behaviorally relevant doses of methamphetamine were achieved under the chosen test conditions. The other two experiments were intracranial self-stimulation and a self-administration assay. Vapor analysis using LC-MS showed that the altered variables including voltage, flow rate, and puff time influenced the amount of drug vaporized and, in turn, would be likely to impact drug exposure. The locomotor assay revealed dose-dependent changes in total distance traveled with methamphetamine given subcutaneously (at doses of 0.3, 1, and 1.7 mg/kg) as well as concentration-dependent changes in locomotion after vaporized methamphetamine exposure (at e-liquid concentrations of 25, 50, 100, and 200 mg/ml). Time spent in the zones along the wall was also assessed as a model of anxiety-like effects. Vehicle vapor as well as vaporized methamphetamine at higher e-liquid concentrations (100 and 200 mg/ml) produced anxiogenic-like effects based on time spent in the zones along the walls of the locomotor chamber. Methamphetamine vapor puffs did not serve as reinforcers in the self-administration assay. ICSS data indicated that d-amphetamine vapor did not facilitate performance but further experimentation should be done due to the small sample size and a number of other challenges encountered

MOTIVATED TO ADAPT: APPLYING GOAL-SETTING THEORY, PRIMED SUBCONSCIOUS GOAL, AND IMPLEMENTATION INTENTION

This study investigated the effects that several motivational interventions have on transition and reacquisition adaptability. Goal-setting, whether assigned or self-set, had no effect on either form of adaptability; however, the two goal-setting conditions differed from each other once goal commitment was taken into consideration. High commitment was negatively associated to transition adaptability for assigned goals, but positively related for self-set goals; this trend was marginally significant in reacquisition adaptability as well. Primed subconscious goals were found to have no effect on either form of adaptability. An implementation intention was found to negatively relate to transition adaptability and to have no effect on reacquisition adaptability. Additionally, sex was found to be related to both forms of adaptability in that women displayed greater transition adaptability, while men displayed greater reacquisition adaptability than women

Rhythm of Silence

This thesis focuses on a fictional depiction of life in the small town of Marion. Illinois in the 1930s and 40s. Each summer throughout my childhood, I spent several weeks visiting my Grandmother, Bertha Kelsey, and Aunt, Dorothy Odum, who live in Marion, Illinois. Spending the balance of the year living in the suburbs of St. Louis, I found Marion a very different world from the one I knew. This story, in large part, was inspired by my memories of Marion as well as the memories my mother, Rosemary Doerner, has shared with me about growing up in Marion. Any similarity between the characters and incidents in the story and actual people and events is strictly coincidental. The following is a general outline for the story: Setting: Marion, Illinois I 930s through mid 40s. Sense of Place: A small southern Illinois town. Grammaw Kelsey and Aunt Dot were both very involved in the Marion, Illinois community. Through them, I met many of the residents. Plot: I wanted to tell about real people, some tragic, some strong, all with a mix of personality traits, both good and bad (my humble way of trying to imitate Shakespeare). Main Characters: Anise and her mother represent the poverty stricken people my grandmother and mother encountered as they worked for President Franklin Roosevelt\u27s Social Reform Program during the Great Depression. I wanted someone to rise above the sadness and neglect, thus came the main character, Robert Forester. Grammaw Netty is my Grammaw Kelsey and Aunt Dot combined. Doctor Forester, Robert\u27s father, is a complex man who remains somewhat of a mystery throughout the story. Point of View: Third person. Voice: Mine, trying to depict the richness of life, the humor, the sadness and the strength and determination of these fictional people of Marion. Writing mainstream literature, or stories about everyday people and everyday events, has always been a challenge for me. The genres: mystery, romance, science fiction and horror seemed to be more assured of holding the readers\u27 interest. But for this culminating project l decided to put away the crutches of genre and rely solely on the diversity in human nature to carry the story. I\u27ve enjoyed the challenge and am surprised by the wide range of topics everyday life presents

Economic Impact and Health Disparities of Firearm Injuries Treated within the Thomas Jefferson University Health System

Introduction: Firearms are a significant cause of morbidity and mortality in the United States. In 2015, firearms killed over 36,000 Americans (CDC, 2017), and in 2013 were responsible for $229 billion in healthcare and other costs (Cerdá 2016). On an average day in Philadelphia, 4 people are injured or killed by firearms (Beard 2017). This purpose of this project is to further investigate these trends in the context of the Thomas Jefferson University Health System. Objective: To date, no research exists to examine firearm violence within the Thomas Jefferson University Hospital (TJUH) System. The purpose of this study is to fill that gap by exploring the geographic distribution, demographics, and cost associated with firearm injuries at TJUH. This information could help identify high-risk patient groups, and contribute to targeted interventions, education, and policy in the future. Methods: This study is a 10-year retrospective analysis of TJUH medical records. ICD codes were used to identify patients treated between January 2008 and December 2017 for firearm-related injuries. Information such as patient zip code, age, ethnicity, insurance, and past medical history are being collected. This data is being entered into REDCap for analysis. Results: There were 505 cases of firearm injuries recorded at TJUH between January 2008 and December 2017. Data are still being collected, so final results are forthcoming. Conclusion: Firearms are a pervasive and deadly threat to public health across the United States. Data collection is ongoing, so firm conclusions cannot yet be drawn. However, there were more cases of firearm violence within the study period than were expected. This stresses the importance of quantifying and studying this problem, so we may be better informed and better prepared to address it

Albuminuria in Diabetes Mellitus: Relation to Ambulatory Versus Office Blood Pressure and Effects of Cilazapril

This study aimed to investigate the relationship between microalbuminuria and office blood pressure (BP) as compared with ambulatory BP in patients with diabetes mellitus under everyday practice conditions. It was also undertaken to assess the effect of the angiotensin converting enzyme inhibitor cilazapril on diabetes-associated albuminuria. Ambulatory BP was recorded during daytime in 54 patients with type II diabetes mellitus at the end of a 4-week period during which they received no vasoactive drug. The difference between office and ambulatory BP was unpredictable in the individual patient. There was no significant correlation between either ambulatory or office BP and urinary albumin/ creatinine ratio. Fifty-one patients underwent a 40-week treatment with 5 mg/day of cilazapril. There was, in the absence of satisfactory BP control, the possibility of adding the calcium antagonist amlodipine (5 mg/day) from the 10th week onward and 12.5 mg/day of hydrochlorothiazide from the 20th week onward. Office mean BP was significantly reduced after 30 to 40 weeks of therapy in patients with normoalbuminuria (n = 19, − 14%, P <.001), in those with microalbuminuria (n = 22, −6.6%, P < .01), as well as in those with clinical proteinuria (n = 9, − 11.4%, P < .01). During the same time, the urinary albumin/creatinine ratio was not modified in normoalbuminuric patients (n = 19, + 24.6%, P = .72) as well as in those with clinical proteinuria (n = 9, −29.4%, P = .09). On the other hand this value was significantly reduced for the group with microalbuminuria (n = 23, −24.3%, P <.05). In the overall population, as well as in hyperalbuminuric patients (patients with microalbuminuria + patients with clinical proteinuria), the reduction of the albumin/ creatinine ratio was also significant (n = 51, −7%, P < .01 and n = 32, −25,7%, P < .01, respectively). In conclusion, the findings of this study performed by practicing physicians show that ambulatory BP may differ greatly from office BP in diabetic patients. They also indicate that urinary albumin excretion is poorly correlated with office and ambulatory BP in type II diabetics. Finally, they demonstrate the antiproteinuric action of prolonged treatment with the angiotensin converting enzyme inhibitor cilazapril, whether given alone or combined with amlodipin

Estudio de un accionamiento electromecánico basado en el control vectorial de un motor síncrono de imanes permanentes superficiales de 376W para una máquina hiladora de fibra de alpaca en el contexto andino rural del Perú

[ES] En el contexto andino rural del Perú, está la provincia de Huancavelica ubicada a 3600msnm, que se caracteriza por la crianza del camélido sudamericano Vicugna pacos (alpaca) poseedora de una fibra de altísima suavidad y de finura del orden de 23 micrones de diámetro [1] que es requerida para la confección de artículos de vestir de lujo para el mercado interno y externo [2]. En la actualidad, los productores están agrupados en comunidades y llevan intentos por transformar la fibra de alpaca en hilo ya que el costo de dicha materia prima sin ningún valor agregado no les resulta rentable; en consecuencia han adquirido máquinas de hilar manuales (ruecas) y en otros casos las mismas ruecas adaptadas a sistemas de tracción con motores eléctricos que les permiten torcer la fibra (darle vueltas a una mecha de fibra) y que parcialmente producen hilo para una parte del mercado local y artesanal[3]. Sin embargo, la producción de hilo no es solo torcer la fibra; sino, además implica asociarla a un título o calibre (número de vueltas por unidad de longitud/tiempo), definir el sentido de giro de torsión (directa s o inversa z ), volver a retorcer los cabos en s o z y desarrollar el proceso a una velocidad constante y de forma permanente para obtener hilos de calidad que sean homogéneos tanto en diámetro y número de vueltas, y así evitar la formación de nudos, pelusa, irregularidades de diámetro y la fractura por el exceso de torsión[4]. Adicionalmente está la capacidad del volumen de producción que depende de la alta velocidad de torsión que en algunos casos industriales asciende hasta unos 3 m/s [5]. En tal sentido, se pretende aplicar el control vectorial FOC[6] a un motor eléctrico SPMSM de 376W para accionar una máquina hiladora que está constituida por una unidad torcedora de alta velocidad y una bobinadora que almacena el hilo. Los objetivos del accionamiento son los siguientes: 1. El torcedor debe tener velocidades de giro constante del orden de 213 vueltas por segundo para torcer hilo calibre 5 (1mm de diámetro) a una velocidad de 1 m/s. 2. Capacidad de torcer y retorcer el hilo en sentido s o z . 3. Mantener invariable la velocidad de torsión durante el proceso hilado frente al cambio permanente de la carga de la bobinadora que será accionada por el mismo motor. 4. Suministrar el par y la potencia necesarias para mantener la velocidad constante a lo largo del proceso. El accionamiento se validará por simulación mediante el software PSIM. Referencias: [1] Producción de fibra de alpaca, llama, vicuña, y guanaco en Sudamérica, Quispe, Rodriguez, Iñiguez, Mueller, Animal Genetic Resources Information, 2009, 45, 1 14.Food and Agriculture Organization of the United Nations, 2009 [2] Arch. Zootec. Vol.58 Nro. 224, Córdova, 2009, issn 1885-4494. Quispe, Alfonso, Flores. [3] Mejoramiento de la producción y comercialización de la fibra de alpaca, Resol.Nro. 533-2017/gob.reg.Hvca./GGR. [4] La industrial textil y su calidad-Hilandería, F Lockuan, 2012. [5]Comportamiento friccional de hilos textiles, Boletín intertex. Naik, Escusa. [6] Control of electric machine drive systems, Seung-Ki Sul. 2011.Gonzales Saenz, W. (2018). Estudio de un accionamiento electromecánico basado en el control vectorial de un motor síncrono de imanes permanentes superficiales de 376W para una máquina hiladora de fibra de alpaca en el contexto andino rural del Perú. Universitat Politècnica de València. http://hdl.handle.net/10251/147059TFG

Botrytis-Resistenzen auf Erdbeeren

Der Wachstumstest 2018 zeigte bei 43 Prozent aller untersuchten Botrytisstämme mehr als fünf Resistenzen auf. Das genetische Resistenzpotenzial bei einjährigen Erdbeerpflanzen lag bei 61 Prozent