Search results for " shock"

Heat Shock Protein in embryonic and adult submandibular salivary glands in healthy and tumorigenic tissues

2020

Heat Shock Proteins (HSPs) role in development and function of human salivary glands have not yet been measured or mapped in detail, in particular, HSP60 role is unknown. They can be potential biomarkers for glandular diseases and malignancies. We present our initial findings on HSP10, HSP27, HSP60, HSP70 and HSP90 distribution in human submandibular salivary glands (SMG) at various stages of development and tumorigenesis.

Study of a Semi Active Electromagnetic Regenerative Suspension

2016

The main objective of this work is the theoretical and numerical study of a device that allows recovering energy from an automobile suspension. In place of the viscous damper, which dissipates the kinetic energy of the vehicle due to rough roads or more marked obstacles, an electromagnetic damper performs the functions of the viscous shock absorber with a recovery of electric energy. The damper has permanent magnets and its working is based on the electromagnetic induction. The used ferromagnetic material is the Supermendur, which has very good ferromagnetic properties, but is expensive and difficult to found, so that the choice of different material is useful to reduce the costs. The mathe…

Design of an Electromagnetic Regenerative Damper and Energy Harvesting Assessment

2016

Design of an electromagnetic regenerative shock absorber is proposed in this paper. In order to increase the efficiency of land vehicles the sources of energy losses have to be eliminated, or reduced. For this reason, several systems, recovering kinetic energy and converting it into electrical power, were studied and designed in the last years. This energy, converted into heat in traditional systems, is recovered to increase the autonomy of the vehicle. The proposed device is constituted by a stator part which coils are placed in an innovative disposition. The moving part is constituted by a rod made in stainless steel with alternated permanent magnets and spacers, so that the relative moti…

Influence on the Dynamic Behavior of Full Car Equipped by Magnetorheological Damper via Switch on/off and h∞ Controller

2011

This paper shows the influence on dynamic behavior of the car when it is equipped with magneto-rheological dampers controlled by a feedback. The feedback is built up in two ways; the first is implemented by a switch on/off control that is characterized by the injection of magnetic field with a constant value. It happens when a certain value of relative speed between the sprung and unsprung mass is exceeded. The second feedback is characterized by the H-infinity control which is based on the relative displacement in order to vary the magnetic field signal in a continuous manner. At the same time the H-infinity control of vehicle is maintained by taking into account the exceeding of speed sig…

Ἔκπληξις e κατάπληξις: shock e resilienza in Tucidide

2012

Because of their ambiguous position between irrational frailty and rational choice, the emotions play a strategic role in Thucydides’ narrative system as well as in his historiographical paradigm. This paper aims at demonstrating the importance of emotions in particular circumstances: ekplexis (and kataplexis) as expressions of fear. The analysis of some crucial passages shows indeed the importance of fear within the historian’s view, where it is presented as a sentiment, both negative and positive, useful to the decision-making in the polis of the fifth century.

Evaluation of irreversible dynamic thermoporation as a tool for the deduction of bacterial load in food matrices (Note) [Valutazione della termoporaz…

2015

La termoporazione dinamica irreversibile (DIT) consiste in un nuovo tipo di tecnologia di pastorizzazione ideato da Koulik e colleghi basato su un processo termico dinamico, caratterizzato da riscaldamenti molto rapidi (shock termici) a temperature finali non superiori a 70°C. L’obiettivo del nostro studio è stato la valutazione dell’influenza di parametri di processo quali la temperatura di partenza (T1 ) del campione da trattare, la temperatura finale in corso di trattamento (T 2), la differenza tra temperatura iniziale e temperatura finale (ΔT), la velocità di riscaldamento (θ) e la durata del trattamento sull’abbattimento della carica batterica nella matrice alimentare

HEAT SHOCK PROTEINS AND ULCERATIVE COLITIS: THE START OF A NEW ERA?

2015

We read with great interest the article written by Abou El Azm and coworkers, published in the last issue of the Arab Journal of Gastroenterology [1]. In this article, the authors investigated the molecular expression of heat shock proteins (HSP) 70 and 90 in relation to the grades of inflammation and dysplasia in patients with ulcerative colitis (UC) before and after treatment. In this study, in agreement with other published studies [2–4], the authors not only found a potential role for HSP 70 and HSP 90 for assessment of the activity and prognosis of UC, but also such markers predicted the presence of dysplasia and differentiated it from reactive atypia [1]. HSP had been found not only a…

Chaperons moleculae in brain tumors-CHAMOBRAT TRIAL: HSP60 and microRNAs related levels in tissue and circulating exosomes in human brain tumors befo…

Current regimen for high-grade gliomas is maximal safe surgical resection followed by external beam radiotherapy with concurrent temozolamide. Maximal tumor resection, however, must be balanced with preservation of the patient’s neurological function. A crucial prognostic factor in oncological neurosurgery is the extent of resection. Several studies have addressed the importance of extent of resection in gliomas surgery. Despite development in the fields of pre operative and intraoperative neuroimaging and neuromonitoring have ameliorated the survival rate and the quality of life for patients affected by high grade gliomas, the clinical outcome of patients with such gliomas remains extremel…

RUOLO DEI LATTATI E DELLA SATURAZIONE VENOSA CENTRALE NEL PAZIENTE CON SEPSI SEVERA E SHOCK SETTICO

2013

Obiettivo. Nel paziente settico viene suggerito di monitorare la ScvO2 e di iniziare i resuscitation bundles quando i lattati hanno una concentrazione di 4 mmol/l. Sia la presenza di iperlattatemia al ricovero sia il successivo sviluppo di iperlat- tacidemia si associano ad una maggiore mortalità in UTI, mentre la rapida velocità di clearance dei lattati ad un aumen- to della sopravvivenza. Non esistono ad oggi studi che dimo- strino se l’inserimento della riduzione dei lattati come goal terapeutico, si associ ad una riduzione della mortalità. Pertan- to abbiamo condotto uno studio per verificare se, il raggiun- gimento di una concentrazione di lattati sierici al di sotto di 4 mmol/l come g…

Fatal anaphylactic shock due to a dental impression material

2009

Materials used for dental impressions are usually safe. This study describes a case of fatal anaphylaxis that appeared immediately after the oral mucosa came into contact with an alginate paste used for dental impressions. The cadaveric examination and the poslmortem toxicology report confirmed that the cause of death was anaphylactic shock. The patient was affected by both cardiovascular and lung dlseases that worsened the condition and forbade the use of epinephrine. To the authors' knowledge, dental impression materials, and alginate in particular, have not been reported previously as being a cause of anaphylaxis