Multiwavelength excitation Raman scattering analysis of bulk and 2 dimensional MoS2: vibrational properties of atomically thin MoS2 layers

In order to deepen the knowledge of the vibrational properties of two-dimensional (2D) MoS2 atomic layers, a complete and systematic Raman scattering analysis has been performed using both bulk single-crystal MoS2 samples and atomically thin MoS2 layers. Raman spectra have been measured under non-resonant and resonant conditions using seven different excitation wavelengths from near-infrared (NIR) to ultraviolet (UV). These measurements have allowed us to observe and identify 41 peaks, among which 22 have not been previously experimentally observed for this compound, and characterize the existence of different resonant excitation conditions for the different excitation wavelengths. This has also included the first analysis of resonant Raman spectra that are achieved using UV excitation conditions. In addition, the analysis of atomically thin MoS2 layers has corroborated the higher potential of UV resonant Raman scattering measurements for the non-destructive assessment of 2D MoS2 samples. Analysis of the relative integral intensity of the additional first- and second-order peaks measured under UV resonant excitation conditions is proposed for the non-destructive characterization of the thickness of the layers, complementing previous studies based on the changes of the peak frequencies

Degree Project: UHR

En los últimos años el mercado de la tecnología y dispositivos móviles ha crecido exponencialmente, como celulares, audífonos, computadores portátiles y smartwatches. Desde la pandemia, la compra de relojes inteligentes ha tenido un volumen de 68,59 millones de unidades y se pronostica que para el año 2026, las ventas sean de 230 millones de unidades (Mordor Intelligence, 2023). Por otro lado, se tiene en cuenta el comportamiento de la gente frente a lo que compra para su bienestar y cómo dicha compra impacta ambientalmente. Las compañías que venden smartwatches entregan un solo pulso al consumidor, pulsos que en su mayoría son de goma o plástico. UHR, sabe e identifica lo innovador, elegante y atractivo que sería aportar un nuevo estilo a los relojes inteligentes de las personas. Ofrece pulsos de colores con diseños únicos y de distinto material, nailon (huella de carbono menor). Con el fin de personalizar sus smartwatches y dar un producto asequible. Un detalle en el outfit de la persona que refleja su identidad y cómo se siente. UHR, va de la mano con sus clientes.In recent years the market for technology and mobile devices has grown exponentially, such as cell phones, hearing aids, laptops, and smartwatches. From the pandemic, the purchase of smart watches has had a volume of 68.59 million units and it is forecast that by the year 2026, sales will be 230 million units (Mordor Intelligence, 2023). On the other hand, the behavior of people is taken into account what you buy for your well-being and how that purchase impacts the environment. Companies that sell smartwatches deliver a single pulse to the consumer, pulses They are mostly rubber or plastic. UHR knows and identifies the innovative, elegant and attractive it would be to bring a new style to people's smart watches. offers pulses colors with unique designs and different material, nylon (lower carbon footprint). With the final purpose to personalize their smartwatches and provide an affordable product. A detail in the outfit of the person who reflects your identity and how you feel. UHR, goes hand in hand with its clients

A kinematic, imaging and electromyography dataset for human muscular manipulability index prediction

Human Muscular Manipulability is a metric that measures the comfort of an specific pose and it can be used for a variety of applications related to healthcare. For this reason, we introduce KIMHu: a Kinematic, Imaging and electroMyography dataset for Human muscular manipulability index prediction. The dataset is comprised of images, depth maps, skeleton tracking data, electromyography recordings and 3 different Human Muscular Manipulability indexes of 20 participants performing different physical exercises with their arm. The methodology followed to acquire and process the data is also presented for future replication. A specific analysis framework for Human Muscular Manipulability is proposed in order to provide benchmarking tools based on this dataset.Óscar G. Hernández and José M. López Castellanos expresses their gratitude to the Fundación Carolina, the National Autonomous University of Honduras and the University of Alicante, for its funding support while this work was in preparation. This work has also been supported by an University of Alicante Grant GRE-20 (2021/00710/001) and by the Spanish Government Grant PID2019-104818RB-I00 funded by MCIN/AEI/10.13039/501100011033 and by “ERDF A way of making Europe”

Multiwavelength excitation Raman scattering analysis of bulk and 2 dimensional MoS2: vibrational properties of atomically thin MoS2 layers

In order to deepen the knowledge of the vibrational properties of two-dimensional (2D) MoS2 atomic layers, a complete and systematic Raman scattering analysis has been performed using both bulk single-crystal MoS2 samples and atomically thin MoS2 layers. Raman spectra have been measured under non-resonant and resonant conditions using seven different excitation wavelengths from near-infrared (NIR) to ultraviolet (UV). These measurements have allowed us to observe and identify 41 peaks, among which 22 have not been previously experimentally observed for this compound, and characterize the existence of different resonant excitation conditions for the different excitation wavelengths. This has also included the first analysis of resonant Raman spectra that are achieved using UV excitation conditions. In addition, the analysis of atomically thin MoS2 layers has corroborated the higher potential of UV resonant Raman scattering measurements for the non-destructive assessment of 2D MoS2 samples. Analysis of the relative integral intensity of the additional first- and second-order peaks measured under UV resonant excitation conditions is proposed for the non-destructive characterization of the thickness of the layers, complementing previous studies based on the changes of the peak frequencies

Latin American Association for the study of the liver (ALEH) practice guidance for the diagnosis and treatment of non-alcoholic fatty liver disease

Non-alcoholic fatty liver disease (NAFLD) currently represents an epidemic worldwide. NAFLD is the most frequently diagnosed chronic liver disease, affecting 20–30% of the general population. Furthermore, its prevalence is predicted to increase exponentially in the next decades, concomitantly with the global epidemic of obesity, type 2 diabetes mellitus (T2DM), and sedentary lifestyle. NAFLD is a clinical syndrome that encompasses a wide spectrum of associated diseases and hepatic complications such as hepatocellular carcinoma (HCC). Moreover, this disease is believed to become the main indication for liver transplantation in the near future. Since NAFLD management represents a growing challenge for primary care physicians, the Asociación Latinoamericana para el Estudio del Hígado (ALEH) has decided to organize this Practice Guidance for the Diagnosis and Treatment of Non-Alcoholic Fatty Liver Disease, written by Latin-American specialists in different clinical areas, and destined to general practitioners, internal medicine specialists, endocrinologists, diabetologists, gastroenterologists, and hepatologists. The main purpose of this document is to improve patient care and awareness of NAFLD. The information provided in this guidance may also be useful in assisting stakeholders in the decision-making process related to NAFLD. Since new evidence is constantly emerging on different aspects of the disease, updates to this guideline will be required in future

Memorias del primer Simposio Nacional de Ciencias Agronómicas

Primer simposio nacional de Ciencias Agronómicas: El renacer del espacio de discusión científica para el Agro colombiano

Memorias del primer Simposio Nacional de Ciencias Agronómicas

Primer simposio nacional de Ciencias Agronómicas: El renacer del espacio de discusión científica para el Agro colombiano