Search results for "sols"

An approximate calculation method for parallel and diffuse solar irradiances on inclined surfaces in the presence of obstructing mountains or buildin…

1983

This paper presents an approximate theoretical method to calculate solar irradiances received by inclined surfaces in mountain valleys or city streets. Results can be used in mesoscale and urban dynamic modelling.

Facepiece filtering respirators with exhalation valve should not be used in the community to limit SARS-CoV-2 diffusion.

2020

New methods of delivery of amphotericin B.

1993

Fungal infections continue to be a major problem in the management of immunocompromised patients. Despite its formidable toxicity and treatment failures, amphotericin B is still the drug of choice for most of these infections. One strategy for reducing the toxicity of amphotericin B and thus permitting administration of higher doses is that of using less toxic formulations. Entrapping amphotericin B into liposomes or binding it to other substances reduces its toxicity to host cells, whereas the selective binding of amphotericin B to ergosterol preserves its toxicity to fungal cells. Adding fungus-specific antibodies to such liposomes may further increase the efficiency of drug targeting. Th…

Mineral trioxide aggregate in primary teeth pulpotomy. A systematic literature review

2009

Evidence-based dentistry is a critical evaluation, awareness of the available evidence to improve decision making about the care of individual patients and / or communities. Objective: To systematically analyze the available scientific literature on clinical and radiographic results of two materials used in pulpotomy in primary teeth: formocresol and mineral trioxide aggregate. Materials and methods: It was identified relevant publications through a search of electronic databases such as MEDLINE (Ovid) and The Cochrane Library. To be included in the review, studies had to define the material used in child patients with pulp exposure by caries or tooth-alveolar trauma. Results: Of the 21 art…

Aerosols generation using Er,Cr:YSGG laser compared to rotary instruments in conservative dentistry: A preliminary study

2021

Background In restorative dentistry, the use of high-speed air turbine, which generates aerosols, can be associated with the transmission of airborne diseases. New laser technologies could be useful in reducing the amount of aerosols, but there is a lack of scientific research on this topic. Material and methods This is a descriptive study to analyze the amount of aerosols produced after class I cavity preparation using high-speed air turbine (group 1) and Er,Cr:YSGG laser with two different parameters (groups 2 and 3). Fluorescein dye was incorporated into the coolant reservoir in order to visualize the production of aerosols during each procedure. Tooth preparation was performed in a typo…

Features and ecological significance of benchmark soils of the Moldavian plateau, Romania

2016

Features and ecological significance of benchmark soils of the Moldavian plateau, Romania

Amendement et renouvellement des sols dans la viticulture bourguignonne aux XIVe et XVe siècles

2019

International audience

From palliation to cure: PIPAC for peritoneal malignancies

2019

Introduction Systemic chemotherapy offers poor control over peritoneal disease, maybe as a consequence of restricted drug availability within the abdominal cavity. Locoregional chemotherapy may overcome these shortcomings but its administration is limited to a few patients with confined peritoneal spread. Pressurized intraperitoneal aerosol chemotherapy (PIPAC) emerged in the last years as a novel method of intraperitoneal drug administration. Evidence acquisition We report a meta-analysis of published studies on PIPAC safety and pathological anti-tumoral efficacy on PC from various tumor entities, with the aim of providing more evidence to support further research. This systematic review a…

High-Resolution Fluorescence Spectra of Airborne Biogenic Secondary Organic Aerosols: Comparisons to Primary Biological Aerosol Particles and Implica…

2021

Aqueous extracts of biogenic secondary organic aerosols (BSOAs) have been found to exhibit fluorescence that may interfere with the laser/light-induced fluorescence (LIF) detection of primary biological aerosol particles (PBAPs). In this study, we quantified the interference of BSOAs to PBAPs by directly measuring airborne BSOA particles, rather than aqueous extracts. BSOAs were generated by the reaction of d-limonene (LIM) or α-pinene (PIN) and ozone (O3) with or without ammonia in a chamber under controlled conditions. With an excitation wavelength of 355 nm, BSOAs exhibited peak emissions at 464–475 nm, while fungal spores exhibited peak emissions at 460–483 nm; the fluorescence intensit…

Aging of biogenic secondary organic aerosol via gas-phase OH radical reactions

2012

The Multiple Chamber Aerosol Chemical Aging Study (MUCHACHAS) tested the hypothesis that hydroxyl radical (OH) aging significantly increases the concentration of first-generation biogenic secondary organic aerosol (SOA). OH is the dominant atmospheric oxidant, and MUCHACHAS employed environmental chambers of very different designs, using multiple OH sources to explore a range of chemical conditions and potential sources of systematic error. We isolated the effect of OH aging, confirming our hypothesis while observing corresponding changes in SOA properties. The mass increases are consistent with an existing gap between global SOA sources and those predicted in models, and can be described b…