Comparison of different characterization approaches for monoelemental calibration solutions at two national metrology institutes.

Monoelemental calibration solutions are the most common reference in elemental analysis, linking measurement results to the International System of Units (SI). National Metrology Institutes (NMI) prepare these solutions as certified reference materials (CRM) and determine their elemental mass fraction with high accuracy. Characterization with high accuracy is one of the most critical steps in CRM production.

Simulating Ionized States in Realistic Chemical Environments with Algebraic Diagrammatic Construction Theory and Polarizable Embedding.

Theoretical simulations of electron detachment processes are vital for understanding chemical redox reactions, semiconductor and electrochemical properties, and high-energy radiation damage. However, accurate calculations of ionized electronic states are very challenging due to their open-shell nature, importance of electron correlation effects, and strong interactions with chemical environment. In this work, we present an efficient approach based on algebraic diagrammatic construction theory with polarizable embedding that allows to accurately simulate ionized electronic states in condensed-phase or biochemical environments (PE-IP-ADC).

Guidelines for the diagnosis and treatment of chronic lymphocytic leukemia and small lymphocytic lymphoma from Chronic Lymphocytic Leukemia Spanish Group (GELLC).

Introduction: Chronic lymphocytic leukemia (CLL) is the most common form of leukemia in adults in Western countries, with a median age at diagnosis of 72 years. This guide, developed by the Spanish Group for Chronic Lymphocytic Leukemia (GELLC), addresses the most relevant aspects of CLL, with the objectives of facilitating and aiding the diagnostic process, establishing therapeutic recommendations for choosing the best treatment for each type of patient, as well as standardizing the management of CLL and ensuring equity across different hospitals in terms of the use of the various available treatment regimens.

Methodology: The references obtained were classified according to the level of evidence and following the criteria established by the Agency for Health Research and Quality, and the recommendations were classified according to the criteria of the National Comprehensive Cancer Network (NCCN).

COVID-19 Diagnosis Within 6 Weeks of Arthroscopic Knee Surgery Leads to Higher Risk for Postoperative Venous Thromboembolism.

Purpose: To determine if preoperative infection with COVID-19 increased risk for postoperative venous thromboembolism (VTE) in patients undergoing arthroscopic knee surgery.

Methods: PearlDiver Mariner 165 database was queried for patients undergoing knee arthroscopy between 2010 and October 2022. Patients were categorized by history of COVID-19 diagnosis and timing in relation to surgery.

[The challenge of healthy aging: Gaps between the needs of older adults and implemented policies in Argentina].

Background And Objectives: While the concept of healthy aging tends to be homogenized, differential characteristics are observed among regions and even within the same country. There are policies aimed at promoting healthy aging; however, it is essential to understand the needs of the population so that these policies can be effective. The objective of this project was to identify gaps between the needs of individuals over 60 years old to achieve healthy aging and the policies implemented in Argentina to support this purpose.