The role of DNA methylation in epigenetics of aging
The strongest evidence that the age-related changes in DNA methylation play a role in aging comes from studies of anti-aging interventions (e.g., caloric restriction, dwarfism, and rapamycin treatment) in mice. These anti-aging interventions deaccelerate the epigenetic clocks and reverse/prevent 20 to 40% of the age-related changes in DNA ...
The aging of gypsum in underground mines
The aging properties of gypsum extracted from two underground mines in France (Livry–Gargan and Grozon) have been highlighted by means of observation performed using scanning electron microscopy ...
Effect of gypsum on the properties of composite binder containing high
Adding gypsum forms a large amount of ettringite and densifies early-age pore structure, but it coarsens later-age pore structure. The addition of gypsum increases Ca/Si and S/Si ratios of C-S-H, but it doesn't affect Al/Si ratio. The addition of gypsum compensates for the poor early-age properties of composite binder containing high-volume ...
The primary performance role of gypsum panels in the built …
A not-for-profit trade association founded in 1930, promoting the use of gypsum while advancing the development, growth, ... The primary performance role of gypsum panels in the built environment is: December 30, 2020. ABOUT; GA PUBLICATIONS AT-A-GLANCE; AIA CONTINUING EDUCATION; ICC CONTINUING EDUCATION;
Full article: The role and mechanism of gut-lung axis …
The role and mechanism of gut-lung axis mediated bidirectional communication in the occurrence and development of chronic obstructive pulmonary disease. ... Aging. COPD is a disease associated with aging, and older individuals are at higher risk of developing it than younger individuals. As the world populations ages, about 20% of the world's ...
The role of ferric coagulant on gypsum scaling and ion …
The role of ferric coagulant on gypsum scaling and ion interception efficiency in nanofiltration at different pH values: Performance and mechanism Water Res . 2020 May 15;175:115695. doi: 10.1016/j.watres.2020.115695.
The role of inflammation in age-related disease
The National Institutes of Health (NIH) Geroscience Interest Group (GSIG) sponsored workshop, The Role of Inflammation inAge-Related Disease, was held September 6th-7th, 2012 in Bethesda, MD. It is now recognized that a mild pro-inflammatory state is correlated with the major degenerative diseases o …
Physicomechanical Properties of Gypsum with …
Gypsum, from either nature or industrial by-products, can be a lower-cost and cleaner alternative binder to Portland cement used in construction projects, such as affordable housing in developing countries. Although various …
Gypsum: a review of its role in the deterioration of
Gypsum is one of the most ubiquitous compounds found both in nature as well as on buildings and monuments. On the latter, its presence as black crusts can be attributed …
FEATURE Gypsum The role of gypsum in cement
cools. This anhydrite gypsum has higher solubility than Gypsum di hydrate / hemi hydrate gypsum. Usage of the anhydrite gypsum shows higher early strengths in OPC as well as PPC/PSC. The anhydrite gypsum has higher SO3 contents of 51 to 53 per cent due to which its optimum usage level would be much lower that imported mineral gypsum/
The emerging role of dysregulated propionate metabolism …
Propionate metabolism dysregulation has emerged as a source of metabolic health alterations linked to aging, cardiovascular and renal diseases, obesity and diabetes, and cancer. This is supported by several large cohort population studies and recent work revealing its role in cancer progression. Mut …
Artificial aging of gypsum binder in terms of …
Aging – is the process of improvement and stabilization of plaster binder properties. The effect of the process is determined by its conditions - the duration and relative...
Gypsum in Cement: Role, Importance, and Why It's Added
While cement's main components like limestone and clay are well-known, the role of additives, particularly gypsum, is often overlooked. Gypsum plays a critical role in cement manufacturing, ensuring its functionality and quality. In this article, we will explore gypsum's role, importance, and benefits in cement. What is Gypsum?
The role of senescent cells in ageing | Nature
Cellular senescence is a process in which cells cease dividing and undergo distinctive phenotypic alterations, including profound chromatin and secretome changes, and tumour-suppressor activation ...
New insights into the growth characteristics and crystal …
The stockpiling of phosphogypsum (PG) poses a substantial risk of environmental pollution.To reduce the stockpile of PG and enhance its value, this research utilized phosphogypsum to produce α-hemihydrate gypsum (a-HH).The study elucidates the crystallization process of α-HH, which involves Ca 2+ helical growth and coordinated filling by …
(PDF) Role of Gypsum Content on the Long-Term …
The role of gypsum level on the long-term strength and expansion of soil stabilised with different lime contents is not well understood. This research, therefore, studied the effect of varying ...
The aging of gypsum in underground mines
The aging properties of gypsum extracted from two underground mines in France (Livry-Gargan and Grozon) have been highlighted by means of observation performed using scanning …
The aging of gypsum in underground mines | Semantic Scholar
In the present work, an attempt has been achieved to describe the effects of ageing and of water on the hydro-mechanical behaviour of chalks from underground quarries of …
Long-term effects of gypsum on the chemistry of sodic soils
Soils with high exchangeable sodium contents have structural and hydrological problems that limit agricultural productivity. Gypsum is commonly applied as an ameliorant but there are few field studies into its long-term (> 10 years) effects on soil chemistry, especially at depths greater than 0.4 m, and no long-term validation of the gypsum requirement model.
Gypsum: a review of its role in the deterioration of
The deterioration of buildings and monuments by gypsum is the result of crystallization cycles of this salt. Although gypsum can dehydrate to a hemihydrate, the mineral bassanite, and to an anhydrate, the mineral anhydrite, this reaction occurs in nature on a geological time scale and therefore it is unlikely to occur when gypsum is found on and in …
SOIL
Abstract. In the natural environment, soils undergo wetting and drying (WD) cycles due to precipitation and evapotranspiration. The WD cycles have a profound impact on soil physical, chemical, and biological properties …
Insights into the Role of Na+ on the Transformation of …
FGD gypsum is produced annually in China, which demands urgent recycling for the prevention of secondary pollution as well as for the conservation of the natural gypsum minerals.1,2 Traditionally, FGD gypsum was utilized as a road sub-base, cement additive, plaster, or soil ameliorant.3−6 Compared to
The Role of Gypsum in Cement
Gypsum is added to cement to regulate the setting reaction that occurs when cement mixes with water. It slows the reaction between tricalcium aluminate (C3A) and water, which would otherwise cause flash setting. When gypsum dissolves in water, it reacts with C3A to form ettringite, coating the C3A particles and allowing the cement mixture to remain workable. After an initial dormant …
(PDF) Gypsum's Role in Cement Production
FEATURE Gypsum The role of gypsum in cement Shreesh Khadilkar reviews the present situation of gypsum, and takes us through a variety of gypsum products, its merits and demerits. G ypsum (CaSO4.2H2O) is used widely in various industries either as gypsum, i.e., the gypsum di-hydrate crystalline variety or as the gypsum hemi hydrates, also known ...
CN111517681A
The invention discloses a cooling and aging process for gypsum, which comprises the following steps: (1) quantitatively conveying the high-temperature building gypsum raw material containing soluble anhydrous calcium sulfate to a cooling chamber; (2) cold air is supplied to the cooling chamber to play a role of cooling, gas-solid mixing is carried out in the cooling chamber to …
The Role of Gypsum in Cement | PDF | Cement
This document discusses the role of gypsum in cement. Gypsum is added to cement to control workability, setting time, mechanical performance, and shrinkage/expansion. The optimal gypsum content allows cement to be …
The aging of gypsum in underground mines | OIEau
The aging properties of gypsum extracted from two underground mines in France (Livry-Gargan and Grozon) have been highlighted by means of observation performed using scanning …
"Cell Membrane Theory of Senescence" and the Role of …
This implies that changes in the metabolism of bioactive lipids as a result of altered activities of desaturases, COX-2 and 5-, 12-, 15-LOX (cyclo-oxygenase and lipoxygenases respectively) may have a critical role in determining cell age and development of several aging associated diseases and genomic stability and gene and oncogene activation.
Artificial aging of gypsum binder in terms of …
The aging of gypsum binder was carried out during storag e at temperature of 20 0 С and ... role of the substrate is performed by the cry stals of calcium sulfate dihy drate which are form ed in ...
Soil stabilization with gypsum: A review
Maqsood et al. (2020) evaluated the effect of aging (9 months) on gypsum mixed sand (GMS) and reported a normalized peak strength reduction of about 20% after the first month. ... Role of gypsum content on the long-term performance of lime-stabilised soil. Materials, 15 (2022), Article 5099. Crossref View in Scopus Google Scholar.