Search results for "Washing"

Fouling mechanism elucidation in membrane bioreactors by bespoke physical cleaning

2018

Abstract Cake layer deposition on a membrane surface can determine both external and internal membrane fouling through negatively affecting the total filtration resistance while exerting a positive effect as a pre-filter. Membranes are usually subjected to a periodic cake layer removal through routine physical cleaning, specifically permeate backwashing of hollow fiber membranes, or enhanced cleaning through, for example, chemically-enhanced backwashing. Physical cake layer removal is crucial for sustaining permeability, yet the effect of different physical cleaning modes remains poorly evaluated. The present work attempts to analyze physical cake layer removal through the application of sp…

An assessment of the human nail plate pH.

2010

<i>Purpose of Study:</i> To measure the pH of the surface of healthy nail plates. <i>Procedures:</i> The surface pH of human fingernails and big toenails was measured in vivo using a skin pH meter. The influence of washing, anatomical site (fingers/toes), side (left/right), digit (digits 1–5) and gender was determined. The pH of the nail interior was also measured. <i>Results:</i> The pH of the nail plate surface was around 5, with toenails having a significantly higher pH than fingernails. Immediately after hand washing, the nail surface pH increased significantly, from pH 5.1 ± 0.4 to 5.3 ± 0.5. However, this was not sustained with time, and the pH retu…

Regional Inequality in Latin America: Does It Mirror the European Pattern?

2020

The aim of this chapter is to analyse the comparative evolution of regional inequality over the course of the historical economic development processes in four countries of South West Europe—France, Italy, Portugal and Spain—and nine countries of Latin America: Argentina, Bolivia, Brazil, Chile, Colombia, Mexico, Peru, Uruguay and Venezuela. Our analysis, which goes back to the nineteenth century, shows that regional income inequality has followed over time what appears now to be an N-shaped evolution in both regions. However, both experiences differ markedly and we identify the main stylized facts of these trajectories. First, Latin America begun the period with higher levels of regional i…

First report of the absence of viral load in testicular sperm samples obtained from men with hepatitis C and HIV after washing and their subsequent u…

2008

Human immunodeficiency virus and hepatitis C infections are sexually transmitted diseases that require sperm samples to be pretreated to eliminate the viral presence before their safe use in assisted reproduction treatments. In this report we describe our experience with sperm washing protocols applied to sperm cells from testicular biopsies as well as the results obtained in subsequent assisted reproduction treatments on seropositive males that are also azoospermic.

Samsung and Volkswagen Crisis Communication in Facebook and Twitter : A Comparative Study

2017

Since September 2015 at least two major crises have emerged where major industrial companies producing consumer products have been involved. In September 2015 diesel cars manufactured by Volkswagen turned out to be equipped with cheating software that caused NO2 and other emission values to be reduced to acceptable levels while tested from the real, unacceptable values in normal use. In August 2016 reports began to appear that the battery of a new smart phone produced by Samsung, Galaxy Note7, could begin to burn, or even explode, while the device was on. In Nov. 2016 also 34 washing machine models were reported to have caused damages due to disintegration. In all cases, the companies have …

“‘As monumental bronze unchanged his look’: Washington Irving’s ‘Philip of Pokanoket’”

2015

International audience

Predicting Hand Washing and Sleep Hygiene Behaviors among College Students: Test of an Integrated Social-Cognition Model

2020

Objective: Hand washing and sleep hygiene are two important health behaviors. The purpose of the current study was to identify the motivational and volitional antecedents of college students&rsquo

Riflessioni per una definizione di “prodotto agricolo sostenibile”

2021

Il presente lavoro si propone di riflettere circa i limiti che l’assenza di un’adeguata definizione di “prodotto sostenibile” comporta, tentando una sua ricostruzione pure alla luce di una più ampia analisi del principio di sostenibilità e della sua evoluzione nel corso degli ultimi decenni. L’assenza di un quadro normativo chiaro genera, infatti, incertezze pure in sede di trasmissione al consumatore delle scelte di sostenibilità assunte dalle imprese in ambito agroalimentare, non permettendo a tali soggetti di definire consapevolmente la propria dieta. Il rischio di informazioni ingannevoli e la difficoltà nell’identificare quando i comportamenti assunti siano il risultato di una politica…

Monitoraggio visivo su palmacee potenziali ospiti del Punteruolo rosso e del Castnide delle palme presenti in Sicilia

2009

Nurses' perceptions of the benefits and adverse effects of hand disinfection: alcohol-based hand rubs vs. hygienic handwashing: a multicentre questio…

2008

Summary Background  Nurses have a high risk of developing hand eczema due to hand disinfection procedures. Objectives  To investigate the perception of nurses regarding the adverse effects of hand washing (HW) and alcoholic disinfection (ADI), and to obtain data on the prevalence of hand dermatitis and sensitization to alcohols and alcohol-based hand rubs (ABHRs). Methods  A self-administered questionnaire survey, carried out as a pilot study (PS), followed by a modified multicentre study (MC) in five hospitals. Patch tests to ethanol (80%), 1-propanol (60%), 2-propanol (70%) and ABHRs were performed in a subsample. Results  The majority (PS 60·1%; MC 69·5%) of nurses considered ADI to be m…