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Dehydration of ultrafine particles and washing with quicklimeDehydration of ultrafine particles and washing with quicklimeDehydration of ultrafine particles and washing with quicklime
Research paperSources, characteristics, toxicity, and control of
2022年1月1日 This paper presents an overview of emission sources, physicochemical characteristics, collection and measurement methodologies, toxicity, and existing control mechanisms for ultrafine particles (UFPs) in the last fifteen years2021年11月15日 This was done by suspending the particles in a 05 M solution of sulphuric acid followed by washing with distilled water to neutralise the pH and a repetition of those steps A contribution to wettability and wetting characterisation of 2020年3月17日 The ultrafine particles (UFPs) in air pollution aggravate respiratory illnesses via oxidative stress and inflammation, according to a review by South Korean and US researchersMechanisms of ultrafine particleinduced respiratory health effects 2024年11月1日 SPICPMS technique utilizes a standard ICPMS setup and timeresolved detection Specifically, the atmospheric ultrafine particles can be introduced sequentially into Advances in analysis of atmospheric ultrafine particles and
The health effects of ultrafine particles Experimental Nature
2020年3月17日 Ultrafine particles (PM 01), which are present in the air in large numbers, pose a health risk They generally enter the body through the lungs but translocate to essentially2020年3月17日 In this review, we examine the physicochemical characteristics of UFPs to enable a better understanding of the effects of these particles on human health The Ultrafine particles: unique physicochemical properties relevant to 2019年2月21日 Due to their small size, ultrafine particles (UFP) are believed to exert higher toxicity than larger particles As numerous studies on health effects of UFP have been Health effects of ultrafine particles: a systematic literature review In this review, we examine the physicochemical characteristics of UFPs to enable a better understanding of the effects of these particles on human health The characteristics of UFPs Ultrafine particles: unique physicochemical properties relevant to
Ultrafine particles: A review about their health effects, presence
2022年5月15日 This work summarizes the health effects, generation, and measurement of ultrafine particles in indoor environments through a literature review When indoor particle Ultrafine particles (UFPs) dominate the particle number population in the urban atmosphere and revealing their chemical composition is important The thermal desorption chemical ionization Composition of Ultrafine Particles in Urban Beijing: Measurement 2023年7月1日 Identifying and quantifying the sources and clarifying the impacts of ultrafine particles (UFP) in the complicated urban environments are important for particle pollution control and UFPclimate Review on main sources and impacts of urban ultrafine particles 2021年5月3日 Argues that erosion shear stress formulations for cohesionless sediment transport should be restricted to sediments containing grains larger than about 20 μm, and empirical erosion shear strength New Definition of Ultrafine Particles in Mine Paste
Dosimetry and Toxicology of Ultrafine Particles
2004年2月1日 High number concentrations up to 106107 # cm3 of ultrafine particles (UFPs) were observed for a gasoline engine at the coldstart stage and a diesel engine during particulate filter regeneration2018年7月19日 Fine and ultrafine particles are successfully recovered by flotation when fine bubbles are present Electroflotation is a technique in which fine bubbles are generated by the electrolysis of water(PDF) Recovery of Fine and Ultrafine Mineral Particles by 2008年1月1日 Model for fractional deposition of inhaled particles ranging from 0006μm to 20μm in the nasopharyngeal region and the larynx (NPL0, in the tracheobronchial (TB) and alveolar (A) region of the (PDF) Ultrafine particles (UFP) and health effects2020年3月17日 The ultrafine particles (UFPs) in air pollution aggravate respiratory illnesses via oxidative stress and inflammation, according to a review by South Korean and US researchers Defined as Mechanisms of ultrafine particleinduced respiratory health effects
Unprecedented levels of ultrafine particles, major sources, and
2022年5月6日 Ultrafine particles (UFP) acting as cloud condensation nuclei (CCN) are the driving force behind changing rainfall patterns Recently observed weather extremes like floods and drought might be beings This document presents an overview of emission sources, physicochemical characteristics, collection and measurement methodologies, toxicity, and existing controlSources, characteristics, toxicity, and control of ultrafine particles 1997年3月1日 Plateletlike hexagonal SrFe12O19 particles were prepared by hydrothermal synthesis, and the effects of molar ratio of Fe/Sr (RFe/Sr) on the phase compositions, morphologies and magnetic Synthesis of Ultrafine SrFe12O19 Particles with High Coercivity2022年3月29日 In order to investigate the flocculation performance and mechanism of quaternary ammonium cationic polyacrylamide (CPAM) on clay mineral particlesStudy of flocculation performance and mechanism of ultrafine
A contribution to wettability and wetting characterisation of ultrafine
2021年11月15日 This was done by suspending the particles in a 05 M solution of sulphuric acid followed by washing with distilled water to neutralise the pH and a repetition of those steps using a 05 M solution of sodium hydroxide Afterwards the particles were dried in 2023年10月5日 Very high concentrations of ultrafine particles (UFP) were measured at Heathrow Airport London Exposure to UFP is strongly linked to adverse health effects and guidance for exposure limits has Emissions of ultrafine particles from civil aircraft: dependence 2020年3月17日 Ultrafine particles (PM01), which are present in the air in large numbers, pose a health risk They generally enter the body through the lungs but translocate to essentially all organs(PDF) The health effects of ultrafine particles ResearchGate2023年8月22日 Previous research has indicated that ultrafine particles (UFPs, particles less than 100 nm) emitted from desktop threedimensional (3D) printers exhibit cytotoxicity However, only a limited number of particles from different filaments and their combinations have been tested for cytotoxicity This s Cytotoxicity and Characterization of Ultrafine Particles from
Making Uniform Whey, Lactose, and Composite Lactose–Whey Particles
2013年10月26日 Pulmonary drug delivery requires particles with a fine and uniform size distribution, 1 5 µ hydrodynamic diameter, for targeted delivery and higher uptake within the pulmonary tract2021年7月1日 The wax and wick composition strongly influenced emissions of BC, PM25, and particle‐phase polycyclic aromatic hydrocarbons (PAHs), and to lower degree ultrafine particles, inorganic and (PDF) Emissions of soot, PAHs, ultrafine particles, NOx, and other 2020年3月17日 Ultrafine particles (UFPs) are aerosols with an aerodynamic diameter of 01 µm (100 nm) or less There is a growing concern in the public health community about the contribution of UFPs to human Ultrafine particles: unique physicochemical properties relevant to 2023年2月1日 Ambient ultrafine particles (UFPs) are often formed through the dynamic photochemistry processes (ie nucleation, condensation, and also coagulation) of lowvolatility gas compounds (Ramírez et al, 2020)Gaseous precursors which are mainly present in the ambient air (ie SO x, NO x) would react with OH − to form sulfuric acid vapors The vapors Ambient ultrafine particle (PM01): Sources, characteristics
Sources, characteristics, toxicity, and control of ultrafine particles
Air pollution by particulate matter (PM) is one of the main threats to human health, particularly in large cities where pollution levels are continually exceeded According to their source of emission, geography, and local meteorology, the pollutant particles vary in size and composition These particles are conditioned to the aerodynamic diameter and thus classified as coarse (25–10 2007年1月1日 These comprised ultrafine and fine particles Deposition was higher on carpet and curtain than on glass and gypsum plate Particles in the range from 03 to 05 µm had the lowest depositionIndoor deposition of fine and ultrafine particles: A 2013年12月10日 More specifically, the ultrafine fraction has been linked to a number of conditions including systemic inflammation Toxicological studies have shown that the small size of ultrafine particles facilitates their deposition deeper in the lungs and makes passing the lungblood barrier into systemic circulation possibleMonitoring of Ultrafine Particles in Rural and Urban Environments2019年3月7日 Ultrafine particles are airborne particulates of less than 100 nm in aerodynamic diameter Examples of ultrafine particles are diesel exhaust particles, products of cooking, heating and wood (PDF) Ultrafine Particles and Health ResearchGate
Ultrafine Particles – Air Quality and Climate
Ultrafine particles (UFP), the nano fraction of airborne particulate matter, are considered to be causing serious health problems and environmental effects Combustion is a major source, also by producing volatile organic pollutants which are converted in the atmosphere through photo2024年11月15日 These reference particles exhibited fractal structures with high reproducibility and stability over a year, maintaining similar mass and number concentrations (100 μg/m 3, 2010 5 #/cm 3) and a mean particle diameter of about 40 nmHigh organic content UFP had significant PAH levels, with benzo[a]pyrene at 02 % (m/m)Toxicological evaluations revealed Generation, characterization, and toxicological assessment of 2018年9月1日 Further, a particular focus will be devoted the role of the Ultrafine Particles, ie particles below 100 nm, in the aerosol formation and in the human exposureRecent advances in the beneficiation of ultrafine coal particles 2000年10月15日 Ultrafine particles (less than 100 nm in diameter) are encountered in ambient air and at the workplace Normal background levels in the urban atmosphere for ultrafine particles are in the range 1–4 × 10 4 cm −3; however, their mass concentration is normally not greater than 2 μg m −3At the workplace, ultrafine particles occur regularly in metal fumes and polymer Toxicology of ultrafine particles: in vivo studies Philosophical
Removal of ultrafine particles in indoor air: Performance of
2011年1月1日 Ultrafine particles (UFPs) are hazardous air pollutants produced by human activities in outdoor and indoor environments Filtration in mechanical ventilation systems or air purifiers is an 2024年3月27日 Particle systems and their efficient and precise separation are becoming increasingly complex Therefore, instead of focusing on a single separation feature, a multidimensional approach is needed where more than Multidimensional Characterization and Separation of 2020年2月3日 Significance High concentrations of ultrafine particles (UFPs), approaching 1 million/cm ³ , are frequently produced from new particle formation under urban environments, but the fundamental (PDF) Remarkable nucleation and growth of 2013年6月1日 For better understanding of air quality, ultrafine particles (UFPs) emitted from laser printers were evaluated as a function of toner coverage, printer type, potential submicrometer particle New Approaches to Characterize and Reduce the
Capture of Ultrafine Particles Using a FilmType Electret Filter
2016年3月4日 ABSTRACTElectret filters have been used widely to collect particles because of their low pressure drop and high collection efficiency due to the electrostatic attraction between the particles and filter However, the collection efficiency of these filters decreases over time due to charge degradation Therefore, a unipolar charger using a corona discharge was combined Schematic of the inflammasome cascade in the lungs of the TiO 2 particleexposed model The inflammatory effects of PM 10 have been demonstrated in experimental animal studies by using direct instillation into the lung prior to human studies that showed pulmonary effects after experimental exposure to PM 17Clinically, PM 10 particles likely provoke airway inflammation Mechanisms of ultrafine particleinduced respiratory health effects2001年8月1日 Ultrafine nickel powders containing hexagonal closepacked nickel (hcpNi) nanocrystallites were prepared using liquidphase reduction with NiC2O4, NaOH, polyvinylpyrrolidone (PVP), and ethylene Preparation of Ultrafine Nickel Powder and its Catalytic Dehydration 2020年3月17日 Ultrafine particles (PM01), which are present in the air in large numbers, pose a health risk They generally enter the body through the lungs but translocate to essentially all organsThe health effects of ultrafine particles Experimental Nature
Preparation and Application of Ultrafine Copper Powder
2023年1月31日 Ultrafine copper powder has the excellent characteristics of both copper and ultrafine particles and has been widely used in industry Different fields have different requirements for ultrafine 2019年2月21日 Objectives Due to their small size, ultrafine particles (UFP) are believed to exert higher toxicity than larger particles As numerous studies on health effects of UFP have been published since the last systematic review in 2013, we aim to systematically review the new literature Methods We searched MEDLINE and the specialized LUDOK database for studies Health effects of ultrafine particles: a systematic literature