External root temperature and its relationship with dentin thickness during gutta-percha removal procedures with ultrasound. An ex vivo study.

Introduction: This study aims to evaluate the temperature rise on the external root surface during gutta-percha removal with two types of ultrasonic tips, and its relationship with the root dentin thickness.

Methods: 56 single-rooted teeth were prepared for gutta-percha removal procedures, conducted for 40 seconds using two types of ultrasonic tips at depths of 6 mm and 11 mm. The temperature generated was measured using a type K thermocouple at three measurement points.

The landscape of biomedical research funding in Brazil: a current overview.

Objective: The objective of this narrative review is to discuss the current state of research funding in Brazil.

Materials And Methods: This study is based on the most recent edition of the course Funding for Research and Innovation in the University of Sao Paulo School of Medicine which was a three-day course with 12 hours of instruction. The course brought together leading experts in the field to comprehensively discuss the current state of research funding in Brazil.

N, N'-disubstituted Ureas as Novel Antiplatelet Agents: Synthesis, Pharmacological Evaluation and In Silico Studies.

Introduction: Thrombotic disorders are among the leading causes of morbidity and mortality worldwide. Drugs used in the prevention and treatment of atherothrombosis have pharmacokinetic limitations and adverse effects such as hemorrhagic conditions, highlighting the importance of developing more effective antiplatelet agents. ethod: In this work, we synthesized N,N'-disubstituted ureas 3a-3j and evaluated their antiplatelet profiles through in vitro, ex vivo, and in silico studies.

Order-disorder phase transition and molecular dynamics in the hybrid perovskite [(CH)NH][Mn(N)].

We present a temperature-dependent Raman scattering study of a [(CH)NH][Mn(N)] hybrid organic-inorganic azide-perovskite, in which we have analysed in detail the wavenumber and full width at half-maximum (FWHM) of lattice modes and internal modes of the NC skeleton, N and CH molecular groups. In general, the modes exhibited unusual behaviour during the phase transitions, including discontinuity in the phonon wavenumber, bandwidth, and unconventional shifts upon temperature variation. Spectral features on heating reveal the absence of significant distortions in the NC skeleton and a relatively restricted order-disorder process of the TrMA cations.

Raman evidence for presence of high-temperature ferromagnetic clusters in magnetodielectric compound Ba-doped LaNiMnO.

Magnetodielectric ferromagnetic semiconductors are key materials because of their applications in spintronic devices; they can be used to control the magnetic properties by applying electric fields. LaNiMnO emerged as an important magnetodielectric ferromagnetic semiconductor because of its high Curie temperature near room temperature. Recently Ba doped was successfully used to improve magnetic properties in LaNiMnO, originating partially ordered systems with different ordering degrees but presenting same T=280K.