196,280 research outputs found
Correction to: The effectiveness of ultrasound examination to assess the healing process of bone lesions of the jaws: a systematic review (Clinical Oral Investigations, (2020), 24, 11, (3739-3747), 10.1007/s00784-020-03339-9)
No full textThe given names of the authors are swapped with their family names. The correct names to be cited should be changed from: Musu Davide1, Shemesh Hagay2, Boccuzzi Michela3, Dettori Claudia3, Cotti Elisabetta1 to Davide Musu1· Hagay Shemesh2 ·Michela Boccuzzi1 · Claudia Dettori1· Elisabetta Cotti1
Development of a Model for the Prediction of the Effects of Multiple Distinct Modes of Nonlinearity on Rail Buckling
No full textA model is developed herein for predicting the onset of environmentally induced buckling in rail structures. As described below, the model may be considered to be an extension of previous efforts spanning much of the twentieth century, and particularly should be considered as an extension of the three degree of freedom model presented in the CRR Report No. 2017-01 (Allen and Fry, 2017) as well as the efforts presented in the derivative M. S. Thesis (Musu 2021). Building on both previous analytic and computational solutions, a finite element model is developed for the purpose of predicting buckling as a function of the track and support structure material properties, the track and support system geometries, the applied track loading, and the initial lateral displacement within the track. Particular emphasis is placed on nonlinearity and history dependence of the track environment. The model is capable of handling multiple distinct modes of nonlinearity: geometric nonlinearity due to large deformations and track misalignment, constitutive nonlinearity due to nonlinear friction at the ballast-tie interface and due to track uplift. The resulting algorithm is deployed to solve problems demonstrating usefulness of the model
Greater occipital nerve block for surgical resection of major infiltrating lesions of the posterior scalp
No full textFor the majority of scalp lesions, local anesthesia is adequate. In patients with more advanced lesions and who thus require sacrifice of a larger area of skin, general anesthesia is required but might be risky because of comorbid illness and/or advanced age, and surgery is sometimes abandoned. In cases with posterior scalp location, we suggest greater occipital nerve block–assisted resection. Since its first description by Bogduk,1 greater occipital nerve block has been used in neurosurgery as a part of anesthesia for supratentorial craniotomies, for chronic cluster headache,2 and to reduce postoperative occipital headache and posterior neck pain after thyroid surgery.3 To the best of our knowledge, greater occipital nerve block has not been systematically suggested for major oncologic scalp surgery
L'anziano in terapia intensiva: ammissione, gestione, outcomes e rapporto costi/benefici
No full textUTILITA' DELL'ECO-COLOR-DOPPLER NELLA DIAGNOSI PREOPERATORIA DELLA PATOLOGIA NODULARE TIROIDEA
No full textMusu’ Selleng dan Islamisasi dalam Peta Politik Islam di Kerajaan Bone
No full textArtikel ini membahas tentang Musu Selleng dan Islamisasi dalam peta poliitik Islam di Kerajaan Bone pada abad 14. Untuk memperoleh data yang tepat,penulis menggunakan telaah historis. Karena pada dasarnya,kajian sejarah adalah kajian terhadap sumber-sumber masa lalu dengan maksud membuat peristiwa masa lalu berbicara melalui tulisan. Hasil penelitian ini terungkap bahwa, penyebab yang mendorong terjadinya Musu Selleng dan Islamisasi di Kerajaan Bone, disebabkan karena dua hal. Pertama, sebab langsung, hal ini dimaksudkan adanya dampak positif yang terjadi karena ide dan gagasan transparansi antar kerajaan termasuk Gowa dengan Bone. Kedua, sebab tidak langsung adalah keinginan Kerajaan Gowa, untuk menjadikan kerajaan Gowa kuat dari segi ekonomi dan politik. Kajian ini memperlihatkan Kerajaan Bone mengalami kekalahan sehingga Raja Bone harus menerima Islam pada tanggal 23 November 1611 M. Kajian ini juga memperlihatkan kedudukan Raja Bone dalam penyebaran Islam. sejarah Islamisasi yang menguntungkan ini mempunyai ciri tersendiri yang pada awalnya ditolak hingga diterima, berkembang secara cepat dan sebagai agama resmi dalam kerajaan sebagai puncak piramida
Mitochondrial genoma involvement in ischemia/reperfusion-induced adaptive changes in human myocardial cell
No full textAim. Following previous studies on the ischemia-induced adaptive changes in human cardiac mitochondria, we examined in the present paper die interaction between nitric oxide-induced (NO) partial inhibition of Cyt. c oxidase (CyLOX) and mitochondrial encoded subunit 2 expression. Aim of the study was to investigate specific stages of the biochemical and molecular cascade which takes place in cytoprotective mechanisms of ischemic and reperfused cardiac cell.
Methods. We examined human left ventricle samples obtained from 20 patients undergoing elective valve surgery before aortic cross-clamping, 20 +/- 2 min (prolonged ischemia), 58 +/- 5 min after cross-clamping (intermittent ischemia) and 21 +/- 4 min after reconstitution of coronary blood flow (reperfusion). Cyt.OX activity was determined by spectrophotometric method and adenosine triphosphate (ATP) content using bioluminescent assay. Malondialdehyde (MDA) assumed as reactive oxygen species (ROS) generation marker was determined by high-performance liquid chromatography method. on the same cardiac samples mitochondrial encoded Cyt.OX subunit 2 expression was examined by immunoblot analysis and blu native gel clectrophoresis method. Statistical study of obtained data was performed using repeated measures analysis of variance (ANOVA).
Results. Prolonged as well intermittent ischemia caused reduction of Cyt.OX activity and ATP, a moderate accumulation of ROS and down-regulation of Cyt.OX subunit 2. When reperfused the cardiomyocytes showed a progressive increase of Cyt.OX activity, ATP pools and Cyt.OX subunit 2 expression. ROS generation was significantly increased by the rapid oxygen re-immission in the cardiac cell.
Conclusion. These data confirm the suggestion that prolonged as well as intermittent ischemia induces activation of cytoprotective mechanisms crucial for cardiac cell survival. indeed, co-ordinated down-regulation of Cyt.OX activities, ATP pools and mitochondrial encoded Cyt.OX subunit 2 are in favour of an ischemia-activated,adaptive mechanism leading to transient and reversible oxidative injury. This observation is confirmed by reduction of apoptosis molecular markers and by complete recovery of mitochondrial oxidative activities in reperfused cardiac tissue
WIST: an Efficient Tool for Planning of Electromagnetic Coverage for Wi-Fi Wireless Networks
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Mitochondrial genome involvement in ischemia/reperfusion-induced adaptive changes in human myocardial cells
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