A Case Report of Acute Transverse Myelitis Following Novel Coronavirus Infection

Introduction: During the coronavirus disease 2019 (COVID-19) pandemic, emergency providers are not only seeing an increasing number of patients with COVID-19 infections, but also associated complications and sequelae of this viral illness.Case Report: We present the case of a 28-year-old female patient who presented after a confirmed COVID-19 infection with lower back pain, bilateral symmetric upper and lower extremity numbness, and urinary retention. The patient was diagnosed with acute transverse myelitis. She required intravenous corticosteroids and plasma exchange with significant improvement in symptoms and minimal residual effects.Conclusion: This case illustrates the importance of prompt recognition and treatment of sequelae of COVID-19 infections

Formation, Growth, and Decay of Sea-Ice in the Canadian Arctic Archipelago

Equations relating the accretion and decay of sea ice to standard meteorological data are derived empirically from observations at Alert, Eureka, Isachsen, Mould Bay, and Resolute, 1947-1957. The differential equations permit calculation of ice growth by increments, and contain a separate term allowing for variations in snow-cover depths. The use of the formulas requires only a knowledge of air temperatures and snow depths. Good correlation is found between decrease in ice thickness and accumulated degree-days above -1.8°C. The stations' locations and names of adjacent water bodies are indicated with the approximate water depths where ice thickness measurements were made. Techniques used in the measurements are described; data on observed ice thickness, accumulated degree-days of frost, and average snow depths for 20-cm increments of ice growth are tabulated.--From CRREL

Analisi sperimentale degli ioni metallici presenti nella saliva di soggetti portatori di apparecchi ortodontici mobili

Fino a pochi decenni addietro, il fenomeno dell’esposizione a basse concentrazioni di agenti tossici era considerato soltanto un problema di igiene ambientale. In realtà vari studi1-5 hanno approfondito, grazie al monitoraggio biologico, il concetto di “esposizione a basse dosi” di agenti tossici o elementi in tracce: pertanto nei suddetti studi, gli autori concludono che le “basse dosi” corrispondono a una esposizione tale che le concentrazioni della sostanza in esame si mantengono, nei fluidi biologici (per la popolazione esposta), al di sopra dei valori massimi di riferimento (stabiliti per la popolazione generale) e al di sotto dei valori-limite biologici

A System And Method For User Customized 3d Model Placement

A system and method are disclosed that enable user-customized 3D ad model placement in augmented reality videos. The first part of the algorithm involves adding markers into the video created by the video providers. The system for broadcasting the video includes an algorithm to predict the products the user is likely to purchase, thus customizing advertisement placement. A 3D model is generated for the product identified by the prediction algorithm. The system combines the product generated via the prediction program with the markers on the video to generate the placement. Thus a video is displayed on the user’s device with an ad for the product customized for the user. This enables the user to click on the product for information or purchase and increases the chances of the user purchasing the product. The disclosed method of model placement has high reliability, user specificity and cost effectiveness in advertising

A study of Ni-based refractory alloys via anomalous scattering techniques

Anomalous x-ray scattering methods provided means to probe the local interactions of specific chemical pairs in a Ni–Nb–Sn sequence. Data near and far from the absorption edges of individual constituent atoms were obtained to calculate differential distribution functions, revealing the atomic arrangements. The compositional fluctuations throughout a typical Ni60Nb40−xSnyNi60Nb40−xSny sample is described as alternating Ni-rich and Nb-rich clusters of ∼ 25 Å∼25Å dimensions. This nonrandom distribution of atomic species may partially explain the failure of previous modeling efforts of bulk metallic glasses to explain their mechanical behavior and thermal stability.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/87755/2/074906_1.pd

A novel identification procedure from ambient vibration data for buildings of the cultural heritage

Ambient modal identification, also known as Operational Modal Analysis (OMA), aims to identify the modal properties of a structure based on vibration data collected when the structure is under its operating conditions, i.e., no initial excitation or known artificial excitation. This procedure for testing and/or monitoring historic buildings, is particularly attractive for civil engineers concerned with the safety of complex historic structures. However, since the external force is not recorded, the identification methods have to be more sophisticated and based on stochastic mechanics. In this context, this contribution will introduce an innovative ambient identification method based on applying the Hilbert Transform, to obtain the analytical representation of the system response in terms of the correlation function. In particular, it is worth stressing that the analytical signal is a complex representation of a time domain signal: the real part is the time domain signal itself, while the imaginary part is its Hilbert transform. A 3DOF numerical example will be presented to show the accuracy of the proposed procedure, and comparisons with data from other methods assess the reliability of the approach

Understanding cost variations in STD service delivery as state and federal agencies reduce funding

Sexually transmitted diseases (STD) continue to be a major health problem in the U.S. Despite the persistence of STDs and the critical role of the public health sector in controlling these diseases, STD services continue to be reduced. A linear regression was performed using county demographic and cost variables. Many of these variables in county public health agencies and the populations they serve were not significantly correlated with cost of service. However, the availability of local tax funding for county health departments (CHDs), which varies extensively across counties within the state, is statistically linked to higher STD expenditure per case. County STD rates were also negatively correlated with cost of service. As the STD rate increases, the cost per STD case decreases implying some economies of scale. County population size did not have any effect on the cost per case. Understanding the factors contributing to the unit costs of STD services is critical to be able to make actionable and prudent decisions about continued financial support for public health agency based STD prevention/control services

ANTERIOR OPEN BITE TREATED WITH E F APPLIANCE: A CASE REPORT

Aim. Current trends in pediatric orthodontics aim to identify incorrect development of occlusion and medium/lower facial third as early as possible. Functional appliances are a popular type of device used for treating malocclusion in patients who are growing. Among the functional orthodontic devices intended for this purpose, \u201cEducation Functional\u201d is highlighted. It was developed by Dr. Daniel Rollet. In fact, in the occlusal alterations, early preventive treatment with elastodontic devices resulted in avoiding dysfunctional forces from acting on the skeletal pattern, thus reaching a balance between bone basis and muscular components. This report describes a clinical case of a patient (9-year-old female) with anterior open bite associated to oral dysfunction, treated, in the mixed dentition, with EF-line appliance. Our purpose is to evaluate the effectiveness of this device for the correction of the dysmorphoses

Transformaciones productivas de la ganadería vacuna a patir de la expansión agrícola : su impacto en la demanda de mano de obra y la explotación familiar

En la llanura pampeana, los últimos años han estado marcados por una constante expansión de la producción, asociada a la difusión de una agricultura de alto rendimiento. La actividad ganadera ha sido relocalizada y relegada a los peores terrenos en función de liberar tierras a la producción de granos. No obstante, resiste, manteniendo los niveles de stock a partir de rediseñar procesos e intensificar algunas etapas productivas. El presente trabajo analiza y evalúa las variaciones en la ganadería vacuna pampeana, a partir de las transformaciones en la agricultura y su impacto en la ocupación de mano de obra y el empleo rural. El estudio se realizó en el partido de Azul, Argentina, representativo de áreas mixtas pampeanas. La metodología empleada contempló una triangulación metodológica mediante la conjunción de análisis de datos de fuentes secundarias, básicamente cuantitativos, con instancias cualitativas, tales como entrevistas a informantes calificados y estudios de caso. Se verificó un proceso de intensificación productiva que si bien ha permitido sostener la actividad en menos superficie, no ha expandido el empleo y en términos cualitativos ha aumentado la presión sobre los trabajadores ya existentes. La mano de obra requerida es permanente en relación a la naturaleza de la actividad, pero no demanda nuevas capacidades y resulta más simple en términos de manejo de procesos. Los engordes concentrados, si bien plantean cierta temporalidad en la cantidad de animales terminados durante el año, prefieren personal permanente con flexibilidad y capacidad de rotación en las labores, antes que transitorios. En relación a las formas familiares, los que persisten, también han transformado sus sistemas productivos, demostrando su capacidad de adaptación. Han diseñado sistemas estables y con buena rentabilidad, pero sin lograr expandir la base laboral, ya sea de origen familiar o asalariada

Friendship and self-harm:A retrospective qualitative study of young adults' experiences of supporting a friend who self-harmed during adolescence

Introduction: Self-harm amongst young people is becoming increasinglyprevalent. Understanding, responding to, and supporting young people who self-harm is vital. Friends are typically the first and sometimes the only source of support sought by adolescents who self-harm. Despite their important role asconfidants, friends’ perspectives and experiences remain poorly understood.Methods: We conducted retrospective qualitative semi-structured interviews,prompted by an adapted version of the Card Sort Task for Self-Harm (CaTS-FF), about the experiences of nine female young adults (18-20 years old) whosupported a friend who self-harmed during adolescence. Data were analyzedusing thematic analysis.Results: Four themes were developed: (1) “I did not realize my friend was on theroad to self-harm”: Friends’ reactions to self-harm; (2) “That’s what friends do”: the role of friends; (3) The impact of supporting a friend who self-harms; and (4) “They were quite formative years”: reflecting on growth through the experience.Discussion: The present findings highlight the complex experiences of youngpeople supporting a friend who self-harms. Despite being willing to take on therole of a supporter, participants experienced a range of difficult emotions andconsequences. The temporal transition running through the four themes reflectsthe evolving nature of participants’ attitudes, knowledge, and friendships. Overall, results highlight the unmet needs of adolescents supporting young people who self-harm, as well as identifying potential pathways to “support the supporters” toward resilience