نتایج جستجو برای: efflorescence

تعداد نتایج: 242  

Journal: :Building and Environment 2021

Hydrophobization lessens the water absorption by facade materials and is thus presumed to reduce moisture problems in internally insulated facades. However, do this it should retain repellency performance throughout aging. The aim of study evaluate impact aging on durability hydrophobic treatment bricks mortars. resulting coefficient, after 635 repeating artificial cycles alternating UV radiati...

Journal: :Heritage Science 2022

Abstract Nero’s Temple at El-Ashmonein archaeological site, in Minia (middle of Egypt), is considered one the most important all temples Nero. This temple dates back to 1520 BC–1075 BC New Kingdom and was reused era Nero (the Fifth Emperor Rome). The construction materials are severely decayed from surrounding environmental impacts, especially contaminated water sources. main objective this pap...

Journal: : 2023

Halotrichite has been identified in geothermal fields of the Kambalny-Pauzhetka-Koshelev region, Bolshoi Semiachik complex, and Mutnovsky volcano (Kamchatka, Russia). forms efflorescence on soils heated up to 70°C, around steam-gas vents boiling springs. Tschermigite, rozenite, szomolnokite, gypsum, alunogen, barite, melanterite, hexahydrite, minerals copiapite, alunite voltaite groups were fou...

Journal: :Sustainability 2023

In coastal areas, the rising damp of salty water is a well-known degradation factor historical masonries, leading to visible features such as crusts, masonry erosion, and plaster loss. Venetian masonries are strongly affected by decay caused exacerbated direct contact with water. Recurrent flooding due high tides an increase in frequency events, also related climate change, raises concern about...

2009
E. Mikhailov

Interactions with water are crucial for the properties, transformation and climate effects of atmospheric aerosols. Here we present a conceptual framework for the interaction of amorphous aerosol particles with water vapor, outlining characteristic features and differences in comparison to crystalline particles. We used a hygroscopicity tandem differential mobility analyzer (H-TDMA) to characte...

Journal: :International journal of research publications 2023

The risk of allergic skin disease caused by changes in the structure elderly should be main focus due to concerns about decreasing quality life and emergence physical mental weaknesses. aim this study was evaluate profile diseases at Dermatology Venereology outpatient unit Dr. Soetomo General Academic Hospital Surabaya throughout year 2019-2021. Methods: This retrospective descriptive conducted...

Journal: :Frontiers in Materials 2021

Salt crystallization is one of the harshest deterioration mechanisms affecting heritage materials, causing impressive decay patterns and loss a high thickness original materials. Although salt damage has been widely investigated in literature from theoretical experimental points view, solutions to mitigate this problem are still extremely limited. In present paper, new biopolymeric treatment ba...

Journal: :Sustainability 2023

Geopolymers have excellent physical and mechanical properties, so they can be used as a substitute for ordinary polymers. are ceramic materials, which exhibit the property of brittleness, limitation in some structural applications. To overcome this shortcoming, new group materials (organic geopolymers) was developed. The aim work is synthesis organic (hybrid) geopolymers. A geopolymer based on ...

2009
STEPHEN EPSTEIN

In recent years South Korea has witnessed an efflorescence of cultural productions that highlight the nation's increasing encounters with the foreign generally and Asia more specifically. Growing travel for Koreans within the larger region, a popular discourse that celebrates the success of the Korean Wave across the continent, a dramatic increase in labor migration and, perhaps most significan...

2004
E. Mikhailov S. Vlasenko R. Niessner U. Pöschl

The interaction of aerosol particles composed of the protein bovine serum albumin (BSA) and the inorganic salts sodium chloride and ammonium nitrate with water vapor has been investigated by hygroscopicity tandem differential mobility analyzer (H-TDMA) experiments complemented by transmission electron microscopy (TEM) and Köhler theory calculations (100–300 nm particle size range, 298 K, 960 hP...

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