نتایج جستجو برای: environmental modifications

تعداد نتایج: 441256  

Journal: :International journal of epidemiology 2012
Lifang Hou Xiao Zhang Dong Wang Andrea Baccarelli

Every year more than 13 million deaths worldwide are due to environmental pollutants, and approximately 24% of diseases are caused by environmental exposures that might be averted through preventive measures. Rapidly growing evidence has linked environmental pollutants with epigenetic variations, including changes in DNA methylation, histone modifications and microRNAs. Environ mental chemicals...

Journal: :iranian journal of science and technology transactions of civil engineering 2015
s. mohammadiun s.a.a. salehi neyshabouri gh. naser h. parhizkar h. vahabi

open-channel junctions have a broad application in civil and environmental engineering. formation of a low-pressure zone with recirculating flow (high sedimentation) accompanied by a high-velocity zone (high erosion) is the most characteristic feature of flow in junctions. a large number of researches have been performed to study the complexity of the flow in junctions in open-channel flows. in...

2012
Takeo Kubota Kunio Miyake Takae Hirasawa

Genomic DNA is faithfully replicated and divided between two daughter cells in the course of each cell cycle. In order to maintain the inheritance of gene expression patterns, the cell must not only replicate the DNA, but also duplicate its chromatin structure (McNairn & Gilbert, 2003). Following replication, DNA is methylated and packaged into nucleosomes by the binding of histone octamers to ...

2016
Samantha M. Keller Tania L. Roth

Environmental factors have long-lasting effects on brain development and behavior. One way experiences are propagated is via epigenetic modifications to the genome. Environmentally-driven epigenetic modifications show incredible brain region- and sex-specificity, and many brain regions affected are ones involved in maternal behavior. In rodent models, females are typically the primary caregiver...

2016
Merja Rantakokko Erja Portegijs Anne Viljanen Susanne Iwarsson Taina Rantanen

BACKGROUND Environmental barriers increase risk for mobility difficulties in old age. Mobility difficulty is preceded by a phase where people try to postpone a difficulty through mobility modification. We studied whether perceived environmental mobility barriers outdoors correlate with mobility modification and mobility difficulty, predict development of mobility difficulty over a two-year foll...

2004

Environmental assessments ideally consist of monitoring natural variation or of studying planned environmental modifications, such as the release of heated effluents from a power plant, and their effects. In both cases the kinds of ecological data to collect, degree of replication, frequency of sampling, and so on can be carefully designed. In contrast, unplanned environmental modifications, su...

Journal: :Chemosphere 2021

3D graphene-based materials are promising adsorbents for environmental applications. Furthermore, increasing attention has been paid to the improvement of graphene removing pollutants. In this article, progress in modification and their performance pollutants were reviewed. The strategies, which classified as (1) activation with CO2 (steam other oxidants) (2) surface functionalization polymers ...

Journal: :journal of membrane science and research 0
i.g. wenten department of chemical engineering, itb, jl. ganesha 10, bandung 40132, indonesia p.t.p aryanti department of chemical engineering, itb, jl. ganesha 10, bandung 40132, indonesia k. khoiruddin department of chemical engineering, itb, jl. ganesha 10, bandung 40132, indonesia a.n. hakim department of chemical engineering, itb, jl. ganesha 10, bandung 40132, indonesia n.f. himma department of chemical engineering, itb, jl. ganesha 10, bandung 40132, indonesia

the polysulfone-based membrane has been used in hemodialysis (hd) and it is continuously developed to maintain its sustainability on the subject of biocompatibility. during the polysulfone-based membrane development, several parameters should be considered to improve the membrane performances, such as excellent biocompatibility, appropriate ultrafiltration rate, and effective clearance of the t...

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