نتایج جستجو برای: enrichment factor ef

تعداد نتایج: 892489  

Journal: :Sustainability 2022

Screening various plant species to act as hyperaccumulators and associated health risks could serve a sustainable solution for the bioremediation heavy metals (HMs). For first time, present study explored phytoremediation potential of native plants, soil enrichment, human with contamination HMs in samples collected from municipal solid-waste open dump site. Soil (n = 18 + 18) dumpsite control s...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2009
Elizabeth Villa Jayati Sengupta Leonardo G Trabuco Jamie LeBarron William T Baxter Tanvir R Shaikh Robert A Grassucci Poul Nissen Måns Ehrenberg Klaus Schulten Joachim Frank

In translation, elongation factor Tu (EF-Tu) molecules deliver aminoacyl-tRNAs to the mRNA-programmed ribosome. The GTPase activity of EF-Tu is triggered by ribosome-induced conformational changes of the factor that play a pivotal role in the selection of the cognate aminoacyl-tRNAs. We present a 6.7-A cryo-electron microscopy map of the aminoacyl-tRNA x EF-Tu x GDP x kirromycin-bound Escherich...

Journal: :Processes 2022

Mining activities, ore concentrations, and transport processes generate large amounts of pollutants, including hazardous elements, which are released into the environment. This work presents results experimental research aimed at evaluating environmental risks soil plant contamination in two magnesite mining processing areas Slovak Republic, assesses phytoremediation potential dominant species....

Journal: :Frontiers in Environmental Science 2022

Inhalation and/or ingestion of toxic heavy metals enriched in road dust have effects on humans. From inhalation and dust, release readily bioavailable elements sorbed to could lead health issues such as lung or skin cancer, kidney dysfunction, hypertension, dermal lesions, peripheral neuropathy, vascular disease. On 49 soil samples collected the Metro Detroit area, we analyzed a suite trace &am...

Abolfazl Naeimabadi Bayram Hashemzadeh, Elaheh Zallaghi, Gholamreza Goudarzi, Kambiz Ahmadi-Ankali Mohammad Heidari-Farsani, Mohammad Shirmardi Nadali Alavi-Bakhtiarivand

Airborne particulate matter along with volatile organic compounds, heavy metals, and other compounds have raised many concerns to many countries including Iran. In this study, the concentrations of seven heavy metals (Cd, Cr, Co, Ni, Pb, Zn, and Al) associated with PM10 have been investigated during normal and dusty days from September to February 2012. The mean PM10 concentrations on the norma...

Journal: :Environmental pollutants & bioavailability 2022

This study aimed to assess the levels of rare earth elements and yttrium (REY) vanadium (V) in soils cultivated with citrus, oil palm black pepper eastern Amazon . The potential risk contamination was estimated using enrichment (EF) bioaccumulation (BAF) factors. results showed that pH, K, P significantly affected REY concentrations. europium most significant among studied elements. contents V ...

Journal: :The Journal of biological chemistry 2002
Hans-Joachim Wieden Kirill Gromadski Dmytro Rodnin Marina V Rodnina

Nucleotide exchange in elongation factor Tu (EF-Tu) is catalyzed by elongation factor Ts (EF-Ts). Similarly to other GTP-binding proteins, the structural changes in the P loop and the Mg(2+) binding site are known to be important for nucleotide release from EF-Tu. In the present paper, we determine the contribution of the contacts between helix D of EF-Tu at the base side of the nucleotide and ...

Journal: Geopersia 2018

The Chah-Shaljami polymetal ore deposit contains heavy metal anomalies in various mineralization zones. Geochemical distribution and correlation of elements in surficial soilsindicate that sulfide, sulfate, sulfosalt and silicate mineral occurrences (e.g. Pyrite, chalcopyrite, galena, sphalerite, molybdenite, enargite, hornblend and biotite) in mineralization and stockwork zones resulted in the...

Journal: :Case studies in chemical and environmental engineering 2023

The research was conducted to determine the cause, dispersal, and risk assessment of metal-contaminated sediment. sediment collected from Madna stream. It transported laboratory, air-dried, ground with a mortar pestle, sieved. digested 10 ml HNO3 30 HCl heated on hot plate at 100 °C for about 2 hours. 1 solution diluted 50 centrifuged 1600 revolutions per minute minutes. clear analyzed by an at...

Journal: :Regional Studies in Marine Science 2021

Sediment, soil and fish samples collected from the Songor Wetland were assessed for spatial distributions of metal (Al, Fe, Zn, Cr, Ni, Cu, Pb, As, Cd Hg) levels contamination loads, using pollution indices multivariate analysis. The processed through microwave digestions (Soil Sediment: [HNO3, HCl, HF, H2O2]; Fish: H2O2]), followed by analysis extracts ICP-MS. results displayed patchiness in s...

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