نتایج جستجو برای: enrichment factor

تعداد نتایج: 881392  

E. Yesim Özkan H. Can Öztekin L. Bat

The concentrations of some heavy metals in sediment from the Sinop coasts of the Black Sea were measured to monitor metal pollution in 2013. The distribution of the heavy metals in sediments of the Black Sea shows a variable pattern. The objectives of the present study were to elucidate the distribution heavy metals such as Cu, Pb, Zn, Ni, Mn, Fe, As, Cd, Cr, Hg and Co in sediment from Sinop co...

In this study, the effects of hydrogen and hydroxygen additions and oxygen enrichment on the emission characteristics of a gasoline engine (EF7) were investigated and compared with each other. The simulation was launched by GT-Power at different engine speeds with 5 % to 15 % volume fractions for both of oxygen and hydrogen enrichment and 4.5 % to 9 % volume fractions of hydroxygen addition in ...

Journal: :international journal of environmental research 0
m. aktaruzzaman department of environmental sciences, jahangirnagar university, dhaka-1342, bangladesh m.a.z. chowdhury agrochemical and environmental research division, institute of food and radiation biology, atomic energy research establishment, savar, dhaka-1349, bangladesh z. fardous agrochemical and environmental research division, institute of food and radiation biology, atomic energy research establishment, savar, dhaka-1349, bangladesh m.k. alam agrochemical and environmental research division, institute of food and radiation biology, atomic energy research establishment, savar, dhaka-1349, bangladesh m.s. hossain department of environmental sciences, jahangirnagar university, dhaka-1342, bangladesh a.n.m. fakhruddin department of environmental sciences, jahangirnagar university, dhaka-1342, bangladesh

pollution of water and soils by heavy metals is an emerging problem in industrialized countries.the present study was conducted to investigate the heavy metals concentration in water and sedimentsamples from ship breaking sites of sitakunda to assess the potential ecological risk posed by heavy metalusing different methods. heavy metals concentration was analyzed by atomic absorption spectrosco...

Background: Developing and promoting empathy between couples can assist them in dealing with destructive communication patterns, increasing their satisfaction through effective dialogue and conversation, and, as a result, creating a safe place to meet emotional needs. The present study aimed to determine the effectiveness of Olson’s enrichment training program and Johnson’s relationship enrichm...

2013
Nibha Mishra Arijit Basu

The virtual screening problems associated with acetylcholinesterase (AChE) inhibitors were explored using multiple shape, and structure-based modeling strategies. The employed strategies include molecular docking, similarity search, and pharmacophore modeling. A subset from directory of useful decoys (DUD) related to AChE inhibitors was considered, which consists of 105 known inhibitors and 373...

2018
Hans De Winter Julio Cesar Dias Lopes

© The Author(s) 2018. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if c...

Talaei, Alireza, Aghighi, Fatemeh , Salami, Mahmoud ,

Introduction: The prenatal stress is a key factor which affects the growth and function of the brain. Several studies have shown that prenatal stress induces deficits in learning and memory of the offspring. The prenatal stress alters the activity of neurotransmitters, such as noradrenaline, dopamine and serotonin, via over-activation of the hypothalamic–pituitary–adrenal axis. In addition, the...

Journal: :Plant physiology 2014
Aurine Verkest Thomas Abeel Ken S Heyndrickx Jelle Van Leene Christa Lanz Eveline Van De Slijke Nancy De Winne Dominique Eeckhout Geert Persiau Frank Van Breusegem Dirk Inzé Klaas Vandepoele Geert De Jaeger

Genome-wide identification of transcription factor (TF) binding sites is pivotal to our understanding of gene expression regulation. Although much progress has been made in the determination of potential binding regions of proteins by chromatin immunoprecipitation, this method has some inherent limitations regarding DNA enrichment efficiency and antibody necessity. Here, we report an alternativ...

Journal: :journal of tethys 0

soil contamination in the vicinity of the abandoned lakan lead and zinc mine was studied. the results showed that over the past decades, the environmental pollution was caused by lead, zinc tailings dam and acid mine drainage. the average of lead, zinc, cadmium, copper and nickel is 1295, 4273, 27, 185 and 92 mg/kg, respectively in the soils of tailings dam. these metals were continuously dispe...

One of the most important methods to investigate heavy metals as pollutants is more likely to use bio-monitors which can be applied as an appropriate index to express the quality of environment. In current study, in order to investigate the effects of dominant plants in the desired region and role of aquatic macrophytes in monitoring such elements as zinc (Zn), lead (Pb), copper (Cu) and cadmiu...

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